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authorTim Redfern <tim@eclectronics.org>2013-09-05 17:57:22 +0100
committerTim Redfern <tim@eclectronics.org>2013-09-05 17:57:22 +0100
commit8992cb1d0d07edc33d274f6d7924ecdf6f83d994 (patch)
tree3a2c86846b7eec8137c1507e623fc7018f13d453 /ffmpeg/libavformat/utils.c
parent741fb4b9e135cfb161a749db88713229038577bb (diff)
making act segmenter
Diffstat (limited to 'ffmpeg/libavformat/utils.c')
-rw-r--r--ffmpeg/libavformat/utils.c4487
1 files changed, 4487 insertions, 0 deletions
diff --git a/ffmpeg/libavformat/utils.c b/ffmpeg/libavformat/utils.c
new file mode 100644
index 0000000..f9acc0e
--- /dev/null
+++ b/ffmpeg/libavformat/utils.c
@@ -0,0 +1,4487 @@
+/*
+ * various utility functions for use within FFmpeg
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* #define DEBUG */
+
+#include "avformat.h"
+#include "avio_internal.h"
+#include "internal.h"
+#include "libavcodec/internal.h"
+#include "libavcodec/raw.h"
+#include "libavcodec/bytestream.h"
+#include "libavutil/avassert.h"
+#include "libavutil/opt.h"
+#include "libavutil/dict.h"
+#include "libavutil/pixdesc.h"
+#include "metadata.h"
+#include "id3v2.h"
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/time.h"
+#include "libavutil/timestamp.h"
+#include "riff.h"
+#include "audiointerleave.h"
+#include "url.h"
+#include <stdarg.h>
+#if CONFIG_NETWORK
+#include "network.h"
+#endif
+
+#undef NDEBUG
+#include <assert.h>
+
+/**
+ * @file
+ * various utility functions for use within FFmpeg
+ */
+
+unsigned avformat_version(void)
+{
+ av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
+ return LIBAVFORMAT_VERSION_INT;
+}
+
+const char *avformat_configuration(void)
+{
+ return FFMPEG_CONFIGURATION;
+}
+
+const char *avformat_license(void)
+{
+#define LICENSE_PREFIX "libavformat license: "
+ return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+}
+
+#define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
+
+static int is_relative(int64_t ts) {
+ return ts > (RELATIVE_TS_BASE - (1LL<<48));
+}
+
+/**
+ * Wrap a given time stamp, if there is an indication for an overflow
+ *
+ * @param st stream
+ * @param timestamp the time stamp to wrap
+ * @return resulting time stamp
+ */
+static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
+{
+ if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
+ st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
+ if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
+ timestamp < st->pts_wrap_reference)
+ return timestamp + (1ULL<<st->pts_wrap_bits);
+ else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
+ timestamp >= st->pts_wrap_reference)
+ return timestamp - (1ULL<<st->pts_wrap_bits);
+ }
+ return timestamp;
+}
+
+#define MAKE_ACCESSORS(str, name, type, field) \
+ type av_##name##_get_##field(const str *s) { return s->field; } \
+ void av_##name##_set_##field(str *s, type v) { s->field = v; }
+
+MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
+
+/** head of registered input format linked list */
+static AVInputFormat *first_iformat = NULL;
+/** head of registered output format linked list */
+static AVOutputFormat *first_oformat = NULL;
+
+AVInputFormat *av_iformat_next(AVInputFormat *f)
+{
+ if(f) return f->next;
+ else return first_iformat;
+}
+
+AVOutputFormat *av_oformat_next(AVOutputFormat *f)
+{
+ if(f) return f->next;
+ else return first_oformat;
+}
+
+void av_register_input_format(AVInputFormat *format)
+{
+ AVInputFormat **p;
+ p = &first_iformat;
+ while (*p != NULL) p = &(*p)->next;
+ *p = format;
+ format->next = NULL;
+}
+
+void av_register_output_format(AVOutputFormat *format)
+{
+ AVOutputFormat **p;
+ p = &first_oformat;
+ while (*p != NULL) p = &(*p)->next;
+ *p = format;
+ format->next = NULL;
+}
+
+int av_match_ext(const char *filename, const char *extensions)
+{
+ const char *ext, *p;
+ char ext1[32], *q;
+
+ if(!filename)
+ return 0;
+
+ ext = strrchr(filename, '.');
+ if (ext) {
+ ext++;
+ p = extensions;
+ for(;;) {
+ q = ext1;
+ while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
+ *q++ = *p++;
+ *q = '\0';
+ if (!av_strcasecmp(ext1, ext))
+ return 1;
+ if (*p == '\0')
+ break;
+ p++;
+ }
+ }
+ return 0;
+}
+
+static int match_format(const char *name, const char *names)
+{
+ const char *p;
+ int len, namelen;
+
+ if (!name || !names)
+ return 0;
+
+ namelen = strlen(name);
+ while ((p = strchr(names, ','))) {
+ len = FFMAX(p - names, namelen);
+ if (!av_strncasecmp(name, names, len))
+ return 1;
+ names = p+1;
+ }
+ return !av_strcasecmp(name, names);
+}
+
+AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
+ const char *mime_type)
+{
+ AVOutputFormat *fmt = NULL, *fmt_found;
+ int score_max, score;
+
+ /* specific test for image sequences */
+#if CONFIG_IMAGE2_MUXER
+ if (!short_name && filename &&
+ av_filename_number_test(filename) &&
+ ff_guess_image2_codec(filename) != AV_CODEC_ID_NONE) {
+ return av_guess_format("image2", NULL, NULL);
+ }
+#endif
+ /* Find the proper file type. */
+ fmt_found = NULL;
+ score_max = 0;
+ while ((fmt = av_oformat_next(fmt))) {
+ score = 0;
+ if (fmt->name && short_name && match_format(short_name, fmt->name))
+ score += 100;
+ if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
+ score += 10;
+ if (filename && fmt->extensions &&
+ av_match_ext(filename, fmt->extensions)) {
+ score += 5;
+ }
+ if (score > score_max) {
+ score_max = score;
+ fmt_found = fmt;
+ }
+ }
+ return fmt_found;
+}
+
+enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
+ const char *filename, const char *mime_type, enum AVMediaType type){
+ if(type == AVMEDIA_TYPE_VIDEO){
+ enum AVCodecID codec_id= AV_CODEC_ID_NONE;
+
+#if CONFIG_IMAGE2_MUXER
+ if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
+ codec_id= ff_guess_image2_codec(filename);
+ }
+#endif
+ if(codec_id == AV_CODEC_ID_NONE)
+ codec_id= fmt->video_codec;
+ return codec_id;
+ }else if(type == AVMEDIA_TYPE_AUDIO)
+ return fmt->audio_codec;
+ else if (type == AVMEDIA_TYPE_SUBTITLE)
+ return fmt->subtitle_codec;
+ else
+ return AV_CODEC_ID_NONE;
+}
+
+AVInputFormat *av_find_input_format(const char *short_name)
+{
+ AVInputFormat *fmt = NULL;
+ while ((fmt = av_iformat_next(fmt))) {
+ if (match_format(short_name, fmt->name))
+ return fmt;
+ }
+ return NULL;
+}
+
+/* an arbitrarily chosen "sane" max packet size -- 50M */
+#define SANE_CHUNK_SIZE (50000000)
+
+int ffio_limit(AVIOContext *s, int size)
+{
+ if(s->maxsize>=0){
+ int64_t remaining= s->maxsize - avio_tell(s);
+ if(remaining < size){
+ int64_t newsize= avio_size(s);
+ if(!s->maxsize || s->maxsize<newsize)
+ s->maxsize= newsize - !newsize;
+ remaining= s->maxsize - avio_tell(s);
+ remaining= FFMAX(remaining, 0);
+ }
+
+ if(s->maxsize>=0 && remaining+1 < size){
+ av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
+ size= remaining+1;
+ }
+ }
+ return size;
+}
+
+/*
+ * Read the data in sane-sized chunks and append to pkt.
+ * Return the number of bytes read or an error.
+ */
+static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
+{
+ int orig_pos = pkt->pos; // av_grow_packet might reset pos
+ int orig_size = pkt->size;
+ int ret;
+
+ do {
+ int prev_size = pkt->size;
+ int read_size;
+
+ /*
+ * When the caller requests a lot of data, limit it to the amount left
+ * in file or SANE_CHUNK_SIZE when it is not known
+ */
+ read_size = size;
+ if (read_size > SANE_CHUNK_SIZE/10) {
+ read_size = ffio_limit(s, read_size);
+ // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
+ if (s->maxsize < 0)
+ read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
+ }
+
+ ret = av_grow_packet(pkt, read_size);
+ if (ret < 0)
+ break;
+
+ ret = avio_read(s, pkt->data + prev_size, read_size);
+ if (ret != read_size) {
+ av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
+ break;
+ }
+
+ size -= read_size;
+ } while (size > 0);
+ if (size > 0)
+ pkt->flags |= AV_PKT_FLAG_CORRUPT;
+
+ pkt->pos = orig_pos;
+ if (!pkt->size)
+ av_free_packet(pkt);
+ return pkt->size > orig_size ? pkt->size - orig_size : ret;
+}
+
+int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
+{
+ av_init_packet(pkt);
+ pkt->data = NULL;
+ pkt->size = 0;
+ pkt->pos = avio_tell(s);
+
+ return append_packet_chunked(s, pkt, size);
+}
+
+int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
+{
+ if (!pkt->size)
+ return av_get_packet(s, pkt, size);
+ return append_packet_chunked(s, pkt, size);
+}
+
+
+int av_filename_number_test(const char *filename)
+{
+ char buf[1024];
+ return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
+}
+
+AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
+{
+ AVProbeData lpd = *pd;
+ AVInputFormat *fmt1 = NULL, *fmt;
+ int score, nodat = 0, score_max=0;
+ const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
+
+ if (!lpd.buf)
+ lpd.buf = zerobuffer;
+
+ if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
+ int id3len = ff_id3v2_tag_len(lpd.buf);
+ if (lpd.buf_size > id3len + 16) {
+ lpd.buf += id3len;
+ lpd.buf_size -= id3len;
+ }else
+ nodat = 1;
+ }
+
+ fmt = NULL;
+ while ((fmt1 = av_iformat_next(fmt1))) {
+ if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
+ continue;
+ score = 0;
+ if (fmt1->read_probe) {
+ score = fmt1->read_probe(&lpd);
+ if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
+ score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
+ } else if (fmt1->extensions) {
+ if (av_match_ext(lpd.filename, fmt1->extensions)) {
+ score = 50;
+ }
+ }
+ if (score > score_max) {
+ score_max = score;
+ fmt = fmt1;
+ }else if (score == score_max)
+ fmt = NULL;
+ }
+ *score_ret= score_max;
+
+ return fmt;
+}
+
+AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
+{
+ int score_ret;
+ AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
+ if(score_ret > *score_max){
+ *score_max= score_ret;
+ return fmt;
+ }else
+ return NULL;
+}
+
+AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
+ int score=0;
+ return av_probe_input_format2(pd, is_opened, &score);
+}
+
+static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
+{
+ static const struct {
+ const char *name; enum AVCodecID id; enum AVMediaType type;
+ } fmt_id_type[] = {
+ { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
+ { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
+ { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
+ { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
+ { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
+ { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
+ { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
+ { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
+ { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
+ { 0 }
+ };
+ int score;
+ AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
+
+ if (fmt && st->request_probe <= score) {
+ int i;
+ av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
+ pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
+ for (i = 0; fmt_id_type[i].name; i++) {
+ if (!strcmp(fmt->name, fmt_id_type[i].name)) {
+ st->codec->codec_id = fmt_id_type[i].id;
+ st->codec->codec_type = fmt_id_type[i].type;
+ break;
+ }
+ }
+ }
+ return score;
+}
+
+/************************************************************/
+/* input media file */
+
+int av_demuxer_open(AVFormatContext *ic){
+ int err;
+
+ if (ic->iformat->read_header) {
+ err = ic->iformat->read_header(ic);
+ if (err < 0)
+ return err;
+ }
+
+ if (ic->pb && !ic->data_offset)
+ ic->data_offset = avio_tell(ic->pb);
+
+ return 0;
+}
+
+
+/** size of probe buffer, for guessing file type from file contents */
+#define PROBE_BUF_MIN 2048
+#define PROBE_BUF_MAX (1<<20)
+
+int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
+ const char *filename, void *logctx,
+ unsigned int offset, unsigned int max_probe_size)
+{
+ AVProbeData pd = { filename ? filename : "", NULL, -offset };
+ unsigned char *buf = NULL;
+ uint8_t *mime_type;
+ int ret = 0, probe_size, buf_offset = 0;
+
+ if (!max_probe_size) {
+ max_probe_size = PROBE_BUF_MAX;
+ } else if (max_probe_size > PROBE_BUF_MAX) {
+ max_probe_size = PROBE_BUF_MAX;
+ } else if (max_probe_size < PROBE_BUF_MIN) {
+ av_log(logctx, AV_LOG_ERROR,
+ "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
+ return AVERROR(EINVAL);
+ }
+
+ if (offset >= max_probe_size) {
+ return AVERROR(EINVAL);
+ }
+
+ if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
+ if (!av_strcasecmp(mime_type, "audio/aacp")) {
+ *fmt = av_find_input_format("aac");
+ }
+ av_freep(&mime_type);
+ }
+
+ for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
+ probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
+ int score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
+ void *buftmp;
+
+ if (probe_size < offset) {
+ continue;
+ }
+
+ /* read probe data */
+ buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
+ if(!buftmp){
+ av_free(buf);
+ return AVERROR(ENOMEM);
+ }
+ buf=buftmp;
+ if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
+ /* fail if error was not end of file, otherwise, lower score */
+ if (ret != AVERROR_EOF) {
+ av_free(buf);
+ return ret;
+ }
+ score = 0;
+ ret = 0; /* error was end of file, nothing read */
+ }
+ pd.buf_size = buf_offset += ret;
+ pd.buf = &buf[offset];
+
+ memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
+
+ /* guess file format */
+ *fmt = av_probe_input_format2(&pd, 1, &score);
+ if(*fmt){
+ if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
+ av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
+ }else
+ av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
+ }
+ }
+
+ if (!*fmt) {
+ av_free(buf);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* rewind. reuse probe buffer to avoid seeking */
+ ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
+
+ return ret;
+}
+
+/* open input file and probe the format if necessary */
+static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
+{
+ int ret;
+ AVProbeData pd = {filename, NULL, 0};
+ int score = AVPROBE_SCORE_RETRY;
+
+ if (s->pb) {
+ s->flags |= AVFMT_FLAG_CUSTOM_IO;
+ if (!s->iformat)
+ return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
+ else if (s->iformat->flags & AVFMT_NOFILE)
+ av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
+ "will be ignored with AVFMT_NOFILE format.\n");
+ return 0;
+ }
+
+ if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
+ (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
+ return 0;
+
+ if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
+ &s->interrupt_callback, options)) < 0)
+ return ret;
+ if (s->iformat)
+ return 0;
+ return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
+}
+
+static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
+ AVPacketList **plast_pktl){
+ AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
+ if (!pktl)
+ return NULL;
+
+ if (*packet_buffer)
+ (*plast_pktl)->next = pktl;
+ else
+ *packet_buffer = pktl;
+
+ /* add the packet in the buffered packet list */
+ *plast_pktl = pktl;
+ pktl->pkt= *pkt;
+ return &pktl->pkt;
+}
+
+int avformat_queue_attached_pictures(AVFormatContext *s)
+{
+ int i;
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
+ s->streams[i]->discard < AVDISCARD_ALL) {
+ AVPacket copy = s->streams[i]->attached_pic;
+ copy.buf = av_buffer_ref(copy.buf);
+ if (!copy.buf)
+ return AVERROR(ENOMEM);
+
+ add_to_pktbuf(&s->raw_packet_buffer, &copy, &s->raw_packet_buffer_end);
+ }
+ return 0;
+}
+
+int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
+{
+ AVFormatContext *s = *ps;
+ int ret = 0;
+ AVDictionary *tmp = NULL;
+ ID3v2ExtraMeta *id3v2_extra_meta = NULL;
+
+ if (!s && !(s = avformat_alloc_context()))
+ return AVERROR(ENOMEM);
+ if (!s->av_class){
+ av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
+ return AVERROR(EINVAL);
+ }
+ if (fmt)
+ s->iformat = fmt;
+
+ if (options)
+ av_dict_copy(&tmp, *options, 0);
+
+ if ((ret = av_opt_set_dict(s, &tmp)) < 0)
+ goto fail;
+
+ if ((ret = init_input(s, filename, &tmp)) < 0)
+ goto fail;
+ avio_skip(s->pb, s->skip_initial_bytes);
+
+ /* check filename in case an image number is expected */
+ if (s->iformat->flags & AVFMT_NEEDNUMBER) {
+ if (!av_filename_number_test(filename)) {
+ ret = AVERROR(EINVAL);
+ goto fail;
+ }
+ }
+
+ s->duration = s->start_time = AV_NOPTS_VALUE;
+ av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
+
+ /* allocate private data */
+ if (s->iformat->priv_data_size > 0) {
+ if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ if (s->iformat->priv_class) {
+ *(const AVClass**)s->priv_data = s->iformat->priv_class;
+ av_opt_set_defaults(s->priv_data);
+ if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
+ goto fail;
+ }
+ }
+
+ /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
+ if (s->pb)
+ ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
+
+ if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
+ if ((ret = s->iformat->read_header(s)) < 0)
+ goto fail;
+
+ if (id3v2_extra_meta) {
+ if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac")) {
+ if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
+ goto fail;
+ } else
+ av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
+ }
+ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
+
+ if ((ret = avformat_queue_attached_pictures(s)) < 0)
+ goto fail;
+
+ if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
+ s->data_offset = avio_tell(s->pb);
+
+ s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
+
+ if (options) {
+ av_dict_free(options);
+ *options = tmp;
+ }
+ *ps = s;
+ return 0;
+
+fail:
+ ff_id3v2_free_extra_meta(&id3v2_extra_meta);
+ av_dict_free(&tmp);
+ if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
+ avio_close(s->pb);
+ avformat_free_context(s);
+ *ps = NULL;
+ return ret;
+}
+
+/*******************************************************/
+
+static void force_codec_ids(AVFormatContext *s, AVStream *st)
+{
+ switch(st->codec->codec_type){
+ case AVMEDIA_TYPE_VIDEO:
+ if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
+ break;
+ case AVMEDIA_TYPE_SUBTITLE:
+ if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
+ break;
+ }
+}
+
+static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
+{
+ if(st->request_probe>0){
+ AVProbeData *pd = &st->probe_data;
+ int end;
+ av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
+ --st->probe_packets;
+
+ if (pkt) {
+ uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
+ if(!new_buf)
+ goto no_packet;
+ pd->buf = new_buf;
+ memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
+ pd->buf_size += pkt->size;
+ memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
+ } else {
+no_packet:
+ st->probe_packets = 0;
+ if (!pd->buf_size) {
+ av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
+ st->index);
+ }
+ }
+
+ end= s->raw_packet_buffer_remaining_size <= 0
+ || st->probe_packets<=0;
+
+ if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
+ int score= set_codec_from_probe_data(s, st, pd);
+ if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
+ || end){
+ pd->buf_size=0;
+ av_freep(&pd->buf);
+ st->request_probe= -1;
+ if(st->codec->codec_id != AV_CODEC_ID_NONE){
+ av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
+ }else
+ av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
+ }
+ force_codec_ids(s, st);
+ }
+ }
+}
+
+int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ int ret, i;
+ AVStream *st;
+
+ for(;;){
+ AVPacketList *pktl = s->raw_packet_buffer;
+
+ if (pktl) {
+ *pkt = pktl->pkt;
+ st = s->streams[pkt->stream_index];
+ if (s->raw_packet_buffer_remaining_size <= 0)
+ probe_codec(s, st, NULL);
+ if(st->request_probe <= 0){
+ s->raw_packet_buffer = pktl->next;
+ s->raw_packet_buffer_remaining_size += pkt->size;
+ av_free(pktl);
+ return 0;
+ }
+ }
+
+ pkt->data = NULL;
+ pkt->size = 0;
+ av_init_packet(pkt);
+ ret= s->iformat->read_packet(s, pkt);
+ if (ret < 0) {
+ if (!pktl || ret == AVERROR(EAGAIN))
+ return ret;
+ for (i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ if (st->probe_packets) {
+ probe_codec(s, st, NULL);
+ }
+ av_assert0(st->request_probe <= 0);
+ }
+ continue;
+ }
+
+ if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
+ (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
+ av_log(s, AV_LOG_WARNING,
+ "Dropped corrupted packet (stream = %d)\n",
+ pkt->stream_index);
+ av_free_packet(pkt);
+ continue;
+ }
+
+ if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
+ av_packet_merge_side_data(pkt);
+
+ if(pkt->stream_index >= (unsigned)s->nb_streams){
+ av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
+ continue;
+ }
+
+ st= s->streams[pkt->stream_index];
+ pkt->dts = wrap_timestamp(st, pkt->dts);
+ pkt->pts = wrap_timestamp(st, pkt->pts);
+
+ force_codec_ids(s, st);
+
+ /* TODO: audio: time filter; video: frame reordering (pts != dts) */
+ if (s->use_wallclock_as_timestamps)
+ pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
+
+ if(!pktl && st->request_probe <= 0)
+ return ret;
+
+ add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
+ s->raw_packet_buffer_remaining_size -= pkt->size;
+
+ probe_codec(s, st, pkt);
+ }
+}
+
+#if FF_API_READ_PACKET
+int av_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ return ff_read_packet(s, pkt);
+}
+#endif
+
+
+/**********************************************************/
+
+static int determinable_frame_size(AVCodecContext *avctx)
+{
+ if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
+ avctx->codec_id == AV_CODEC_ID_MP1 ||
+ avctx->codec_id == AV_CODEC_ID_MP2 ||
+ avctx->codec_id == AV_CODEC_ID_MP3/* ||
+ avctx->codec_id == AV_CODEC_ID_CELT*/)
+ return 1;
+ return 0;
+}
+
+/**
+ * Get the number of samples of an audio frame. Return -1 on error.
+ */
+int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
+{
+ int frame_size;
+
+ /* give frame_size priority if demuxing */
+ if (!mux && enc->frame_size > 1)
+ return enc->frame_size;
+
+ if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
+ return frame_size;
+
+ /* fallback to using frame_size if muxing */
+ if (enc->frame_size > 1)
+ return enc->frame_size;
+
+ //For WMA we currently have no other means to calculate duration thus we
+ //do it here by assuming CBR, which is true for all known cases.
+ if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
+ if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
+ return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
+ }
+
+ return -1;
+}
+
+
+/**
+ * Return the frame duration in seconds. Return 0 if not available.
+ */
+void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
+ AVCodecParserContext *pc, AVPacket *pkt)
+{
+ int frame_size;
+
+ *pnum = 0;
+ *pden = 0;
+ switch(st->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (st->r_frame_rate.num && !pc) {
+ *pnum = st->r_frame_rate.den;
+ *pden = st->r_frame_rate.num;
+ } else if(st->time_base.num*1000LL > st->time_base.den) {
+ *pnum = st->time_base.num;
+ *pden = st->time_base.den;
+ }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
+ *pnum = st->codec->time_base.num;
+ *pden = st->codec->time_base.den;
+ if (pc && pc->repeat_pict) {
+ if (*pnum > INT_MAX / (1 + pc->repeat_pict))
+ *pden /= 1 + pc->repeat_pict;
+ else
+ *pnum *= 1 + pc->repeat_pict;
+ }
+ //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
+ //Thus if we have no parser in such case leave duration undefined.
+ if(st->codec->ticks_per_frame>1 && !pc){
+ *pnum = *pden = 0;
+ }
+ }
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
+ if (frame_size <= 0 || st->codec->sample_rate <= 0)
+ break;
+ *pnum = frame_size;
+ *pden = st->codec->sample_rate;
+ break;
+ default:
+ break;
+ }
+}
+
+static int is_intra_only(AVCodecContext *enc){
+ const AVCodecDescriptor *desc;
+
+ if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
+ return 1;
+
+ desc = av_codec_get_codec_descriptor(enc);
+ if (!desc) {
+ desc = avcodec_descriptor_get(enc->codec_id);
+ av_codec_set_codec_descriptor(enc, desc);
+ }
+ if (desc)
+ return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
+ return 0;
+}
+
+static int has_decode_delay_been_guessed(AVStream *st)
+{
+ if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
+ if(!st->info) // if we have left find_stream_info then nb_decoded_frames wont increase anymore for stream copy
+ return 1;
+#if CONFIG_H264_DECODER
+ if(st->codec->has_b_frames &&
+ avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
+ return 1;
+#endif
+ if(st->codec->has_b_frames<3)
+ return st->nb_decoded_frames >= 7;
+ else if(st->codec->has_b_frames<4)
+ return st->nb_decoded_frames >= 18;
+ else
+ return st->nb_decoded_frames >= 20;
+}
+
+static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
+{
+ if (pktl->next)
+ return pktl->next;
+ if (pktl == s->parse_queue_end)
+ return s->packet_buffer;
+ return NULL;
+}
+
+static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
+{
+ if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
+ st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
+ int i;
+
+ // reference time stamp should be 60 s before first time stamp
+ int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
+ // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
+ int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
+ (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
+ AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
+
+ AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
+
+ if (!first_program) {
+ int default_stream_index = av_find_default_stream_index(s);
+ if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
+ for (i=0; i<s->nb_streams; i++) {
+ s->streams[i]->pts_wrap_reference = pts_wrap_reference;
+ s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
+ }
+ }
+ else {
+ st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
+ st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
+ }
+ }
+ else {
+ AVProgram *program = first_program;
+ while (program) {
+ if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
+ pts_wrap_reference = program->pts_wrap_reference;
+ pts_wrap_behavior = program->pts_wrap_behavior;
+ break;
+ }
+ program = av_find_program_from_stream(s, program, stream_index);
+ }
+
+ // update every program with differing pts_wrap_reference
+ program = first_program;
+ while(program) {
+ if (program->pts_wrap_reference != pts_wrap_reference) {
+ for (i=0; i<program->nb_stream_indexes; i++) {
+ s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
+ s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
+ }
+
+ program->pts_wrap_reference = pts_wrap_reference;
+ program->pts_wrap_behavior = pts_wrap_behavior;
+ }
+ program = av_find_program_from_stream(s, program, stream_index);
+ }
+ }
+ return 1;
+ }
+ return 0;
+}
+
+static void update_initial_timestamps(AVFormatContext *s, int stream_index,
+ int64_t dts, int64_t pts, AVPacket *pkt)
+{
+ AVStream *st= s->streams[stream_index];
+ AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
+ int64_t pts_buffer[MAX_REORDER_DELAY+1];
+ int64_t shift;
+ int i, delay;
+
+ if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
+ return;
+
+ delay = st->codec->has_b_frames;
+ st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
+ st->cur_dts= dts;
+ shift = st->first_dts - RELATIVE_TS_BASE;
+
+ for (i=0; i<MAX_REORDER_DELAY+1; i++)
+ pts_buffer[i] = AV_NOPTS_VALUE;
+
+ if (is_relative(pts))
+ pts += shift;
+
+ for(; pktl; pktl= get_next_pkt(s, st, pktl)){
+ if(pktl->pkt.stream_index != stream_index)
+ continue;
+ if(is_relative(pktl->pkt.pts))
+ pktl->pkt.pts += shift;
+
+ if(is_relative(pktl->pkt.dts))
+ pktl->pkt.dts += shift;
+
+ if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
+ st->start_time= pktl->pkt.pts;
+
+ if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
+ pts_buffer[0]= pktl->pkt.pts;
+ for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
+ FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
+ if(pktl->pkt.dts == AV_NOPTS_VALUE)
+ pktl->pkt.dts= pts_buffer[0];
+ }
+ }
+
+ if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
+ // correct first time stamps to negative values
+ st->first_dts = wrap_timestamp(st, st->first_dts);
+ st->cur_dts = wrap_timestamp(st, st->cur_dts);
+ pkt->dts = wrap_timestamp(st, pkt->dts);
+ pkt->pts = wrap_timestamp(st, pkt->pts);
+ pts = wrap_timestamp(st, pts);
+ }
+
+ if (st->start_time == AV_NOPTS_VALUE)
+ st->start_time = pts;
+}
+
+static void update_initial_durations(AVFormatContext *s, AVStream *st,
+ int stream_index, int duration)
+{
+ AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
+ int64_t cur_dts= RELATIVE_TS_BASE;
+
+ if(st->first_dts != AV_NOPTS_VALUE){
+ cur_dts= st->first_dts;
+ for(; pktl; pktl= get_next_pkt(s, st, pktl)){
+ if(pktl->pkt.stream_index == stream_index){
+ if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
+ break;
+ cur_dts -= duration;
+ }
+ }
+ if(pktl && pktl->pkt.dts != st->first_dts) {
+ av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s in the queue\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
+ return;
+ }
+ if(!pktl) {
+ av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
+ return;
+ }
+ pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
+ st->first_dts = cur_dts;
+ }else if(st->cur_dts != RELATIVE_TS_BASE)
+ return;
+
+ for(; pktl; pktl= get_next_pkt(s, st, pktl)){
+ if(pktl->pkt.stream_index != stream_index)
+ continue;
+ if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
+ && !pktl->pkt.duration){
+ pktl->pkt.dts= cur_dts;
+ if(!st->codec->has_b_frames)
+ pktl->pkt.pts= cur_dts;
+// if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
+ pktl->pkt.duration = duration;
+ }else
+ break;
+ cur_dts = pktl->pkt.dts + pktl->pkt.duration;
+ }
+ if(!pktl)
+ st->cur_dts= cur_dts;
+}
+
+static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
+ AVCodecParserContext *pc, AVPacket *pkt)
+{
+ int num, den, presentation_delayed, delay, i;
+ int64_t offset;
+
+ if (s->flags & AVFMT_FLAG_NOFILLIN)
+ return;
+
+ if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
+ pkt->dts= AV_NOPTS_VALUE;
+
+ if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
+ //FIXME Set low_delay = 0 when has_b_frames = 1
+ st->codec->has_b_frames = 1;
+
+ /* do we have a video B-frame ? */
+ delay= st->codec->has_b_frames;
+ presentation_delayed = 0;
+
+ /* XXX: need has_b_frame, but cannot get it if the codec is
+ not initialized */
+ if (delay &&
+ pc && pc->pict_type != AV_PICTURE_TYPE_B)
+ presentation_delayed = 1;
+
+ if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && st->pts_wrap_bits<63 && pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > pkt->pts){
+ if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
+ pkt->dts -= 1LL<<st->pts_wrap_bits;
+ } else
+ pkt->pts += 1LL<<st->pts_wrap_bits;
+ }
+
+ // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
+ // we take the conservative approach and discard both
+ // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
+ if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
+ av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
+ if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
+ pkt->dts= AV_NOPTS_VALUE;
+ }
+
+ if (pkt->duration == 0) {
+ ff_compute_frame_duration(&num, &den, st, pc, pkt);
+ if (den && num) {
+ pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
+ }
+ }
+ if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
+ update_initial_durations(s, st, pkt->stream_index, pkt->duration);
+
+ /* correct timestamps with byte offset if demuxers only have timestamps
+ on packet boundaries */
+ if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
+ /* this will estimate bitrate based on this frame's duration and size */
+ offset = av_rescale(pc->offset, pkt->duration, pkt->size);
+ if(pkt->pts != AV_NOPTS_VALUE)
+ pkt->pts += offset;
+ if(pkt->dts != AV_NOPTS_VALUE)
+ pkt->dts += offset;
+ }
+
+ if (pc && pc->dts_sync_point >= 0) {
+ // we have synchronization info from the parser
+ int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
+ if (den > 0) {
+ int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
+ if (pkt->dts != AV_NOPTS_VALUE) {
+ // got DTS from the stream, update reference timestamp
+ st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
+ pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
+ } else if (st->reference_dts != AV_NOPTS_VALUE) {
+ // compute DTS based on reference timestamp
+ pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
+ pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
+ }
+ if (pc->dts_sync_point > 0)
+ st->reference_dts = pkt->dts; // new reference
+ }
+ }
+
+ /* This may be redundant, but it should not hurt. */
+ if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
+ presentation_delayed = 1;
+
+ av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
+ presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
+ /* interpolate PTS and DTS if they are not present */
+ //We skip H264 currently because delay and has_b_frames are not reliably set
+ if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
+ if (presentation_delayed) {
+ /* DTS = decompression timestamp */
+ /* PTS = presentation timestamp */
+ if (pkt->dts == AV_NOPTS_VALUE)
+ pkt->dts = st->last_IP_pts;
+ update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
+ if (pkt->dts == AV_NOPTS_VALUE)
+ pkt->dts = st->cur_dts;
+
+ /* this is tricky: the dts must be incremented by the duration
+ of the frame we are displaying, i.e. the last I- or P-frame */
+ if (st->last_IP_duration == 0)
+ st->last_IP_duration = pkt->duration;
+ if(pkt->dts != AV_NOPTS_VALUE)
+ st->cur_dts = pkt->dts + st->last_IP_duration;
+ st->last_IP_duration = pkt->duration;
+ st->last_IP_pts= pkt->pts;
+ /* cannot compute PTS if not present (we can compute it only
+ by knowing the future */
+ } else if (pkt->pts != AV_NOPTS_VALUE ||
+ pkt->dts != AV_NOPTS_VALUE ||
+ pkt->duration ) {
+ int duration = pkt->duration;
+
+ /* presentation is not delayed : PTS and DTS are the same */
+ if (pkt->pts == AV_NOPTS_VALUE)
+ pkt->pts = pkt->dts;
+ update_initial_timestamps(s, pkt->stream_index, pkt->pts,
+ pkt->pts, pkt);
+ if (pkt->pts == AV_NOPTS_VALUE)
+ pkt->pts = st->cur_dts;
+ pkt->dts = pkt->pts;
+ if (pkt->pts != AV_NOPTS_VALUE)
+ st->cur_dts = pkt->pts + duration;
+ }
+ }
+
+ if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
+ st->pts_buffer[0]= pkt->pts;
+ for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
+ FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
+ if(pkt->dts == AV_NOPTS_VALUE)
+ pkt->dts= st->pts_buffer[0];
+ }
+ if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
+ update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
+ }
+ if(pkt->dts > st->cur_dts)
+ st->cur_dts = pkt->dts;
+
+ av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
+ presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
+
+ /* update flags */
+ if (is_intra_only(st->codec))
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ if (pc)
+ pkt->convergence_duration = pc->convergence_duration;
+}
+
+static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
+{
+ while (*pkt_buf) {
+ AVPacketList *pktl = *pkt_buf;
+ *pkt_buf = pktl->next;
+ av_free_packet(&pktl->pkt);
+ av_freep(&pktl);
+ }
+ *pkt_buf_end = NULL;
+}
+
+/**
+ * Parse a packet, add all split parts to parse_queue
+ *
+ * @param pkt packet to parse, NULL when flushing the parser at end of stream
+ */
+static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
+{
+ AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
+ AVStream *st = s->streams[stream_index];
+ uint8_t *data = pkt ? pkt->data : NULL;
+ int size = pkt ? pkt->size : 0;
+ int ret = 0, got_output = 0;
+
+ if (!pkt) {
+ av_init_packet(&flush_pkt);
+ pkt = &flush_pkt;
+ got_output = 1;
+ } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
+ // preserve 0-size sync packets
+ compute_pkt_fields(s, st, st->parser, pkt);
+ }
+
+ while (size > 0 || (pkt == &flush_pkt && got_output)) {
+ int len;
+
+ av_init_packet(&out_pkt);
+ len = av_parser_parse2(st->parser, st->codec,
+ &out_pkt.data, &out_pkt.size, data, size,
+ pkt->pts, pkt->dts, pkt->pos);
+
+ pkt->pts = pkt->dts = AV_NOPTS_VALUE;
+ pkt->pos = -1;
+ /* increment read pointer */
+ data += len;
+ size -= len;
+
+ got_output = !!out_pkt.size;
+
+ if (!out_pkt.size)
+ continue;
+
+ /* set the duration */
+ out_pkt.duration = 0;
+ if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
+ if (st->codec->sample_rate > 0) {
+ out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
+ (AVRational){ 1, st->codec->sample_rate },
+ st->time_base,
+ AV_ROUND_DOWN);
+ }
+ } else if (st->codec->time_base.num != 0 &&
+ st->codec->time_base.den != 0) {
+ out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
+ st->codec->time_base,
+ st->time_base,
+ AV_ROUND_DOWN);
+ }
+
+ out_pkt.stream_index = st->index;
+ out_pkt.pts = st->parser->pts;
+ out_pkt.dts = st->parser->dts;
+ out_pkt.pos = st->parser->pos;
+
+ if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
+ out_pkt.pos = st->parser->frame_offset;
+
+ if (st->parser->key_frame == 1 ||
+ (st->parser->key_frame == -1 &&
+ st->parser->pict_type == AV_PICTURE_TYPE_I))
+ out_pkt.flags |= AV_PKT_FLAG_KEY;
+
+ if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
+ out_pkt.flags |= AV_PKT_FLAG_KEY;
+
+ compute_pkt_fields(s, st, st->parser, &out_pkt);
+
+ if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
+ out_pkt.buf = pkt->buf;
+ pkt->buf = NULL;
+#if FF_API_DESTRUCT_PACKET
+ out_pkt.destruct = pkt->destruct;
+ pkt->destruct = NULL;
+#endif
+ }
+ if ((ret = av_dup_packet(&out_pkt)) < 0)
+ goto fail;
+
+ if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
+ av_free_packet(&out_pkt);
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ }
+
+
+ /* end of the stream => close and free the parser */
+ if (pkt == &flush_pkt) {
+ av_parser_close(st->parser);
+ st->parser = NULL;
+ }
+
+fail:
+ av_free_packet(pkt);
+ return ret;
+}
+
+static int read_from_packet_buffer(AVPacketList **pkt_buffer,
+ AVPacketList **pkt_buffer_end,
+ AVPacket *pkt)
+{
+ AVPacketList *pktl;
+ av_assert0(*pkt_buffer);
+ pktl = *pkt_buffer;
+ *pkt = pktl->pkt;
+ *pkt_buffer = pktl->next;
+ if (!pktl->next)
+ *pkt_buffer_end = NULL;
+ av_freep(&pktl);
+ return 0;
+}
+
+static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
+{
+ int ret = 0, i, got_packet = 0;
+
+ av_init_packet(pkt);
+
+ while (!got_packet && !s->parse_queue) {
+ AVStream *st;
+ AVPacket cur_pkt;
+
+ /* read next packet */
+ ret = ff_read_packet(s, &cur_pkt);
+ if (ret < 0) {
+ if (ret == AVERROR(EAGAIN))
+ return ret;
+ /* flush the parsers */
+ for(i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ if (st->parser && st->need_parsing)
+ parse_packet(s, NULL, st->index);
+ }
+ /* all remaining packets are now in parse_queue =>
+ * really terminate parsing */
+ break;
+ }
+ ret = 0;
+ st = s->streams[cur_pkt.stream_index];
+
+ if (cur_pkt.pts != AV_NOPTS_VALUE &&
+ cur_pkt.dts != AV_NOPTS_VALUE &&
+ cur_pkt.pts < cur_pkt.dts) {
+ av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
+ cur_pkt.stream_index,
+ av_ts2str(cur_pkt.pts),
+ av_ts2str(cur_pkt.dts),
+ cur_pkt.size);
+ }
+ if (s->debug & FF_FDEBUG_TS)
+ av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
+ cur_pkt.stream_index,
+ av_ts2str(cur_pkt.pts),
+ av_ts2str(cur_pkt.dts),
+ cur_pkt.size,
+ cur_pkt.duration,
+ cur_pkt.flags);
+
+ if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
+ st->parser = av_parser_init(st->codec->codec_id);
+ if (!st->parser) {
+ av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
+ "%s, packets or times may be invalid.\n",
+ avcodec_get_name(st->codec->codec_id));
+ /* no parser available: just output the raw packets */
+ st->need_parsing = AVSTREAM_PARSE_NONE;
+ } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
+ st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
+ } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
+ st->parser->flags |= PARSER_FLAG_ONCE;
+ } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
+ st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
+ }
+ }
+
+ if (!st->need_parsing || !st->parser) {
+ /* no parsing needed: we just output the packet as is */
+ *pkt = cur_pkt;
+ compute_pkt_fields(s, st, NULL, pkt);
+ if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
+ (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
+ ff_reduce_index(s, st->index);
+ av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
+ }
+ got_packet = 1;
+ } else if (st->discard < AVDISCARD_ALL) {
+ if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
+ return ret;
+ } else {
+ /* free packet */
+ av_free_packet(&cur_pkt);
+ }
+ if (pkt->flags & AV_PKT_FLAG_KEY)
+ st->skip_to_keyframe = 0;
+ if (st->skip_to_keyframe) {
+ av_free_packet(&cur_pkt);
+ got_packet = 0;
+ }
+ }
+
+ if (!got_packet && s->parse_queue)
+ ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
+
+ if(s->debug & FF_FDEBUG_TS)
+ av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
+ pkt->stream_index,
+ av_ts2str(pkt->pts),
+ av_ts2str(pkt->dts),
+ pkt->size,
+ pkt->duration,
+ pkt->flags);
+
+ return ret;
+}
+
+int av_read_frame(AVFormatContext *s, AVPacket *pkt)
+{
+ const int genpts = s->flags & AVFMT_FLAG_GENPTS;
+ int eof = 0;
+ int ret;
+ AVStream *st;
+
+ if (!genpts) {
+ ret = s->packet_buffer ?
+ read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
+ read_frame_internal(s, pkt);
+ if (ret < 0)
+ return ret;
+ goto return_packet;
+ }
+
+ for (;;) {
+ AVPacketList *pktl = s->packet_buffer;
+
+ if (pktl) {
+ AVPacket *next_pkt = &pktl->pkt;
+
+ if (next_pkt->dts != AV_NOPTS_VALUE) {
+ int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
+ // last dts seen for this stream. if any of packets following
+ // current one had no dts, we will set this to AV_NOPTS_VALUE.
+ int64_t last_dts = next_pkt->dts;
+ while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
+ if (pktl->pkt.stream_index == next_pkt->stream_index &&
+ (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
+ if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
+ next_pkt->pts = pktl->pkt.dts;
+ }
+ if (last_dts != AV_NOPTS_VALUE) {
+ // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
+ last_dts = pktl->pkt.dts;
+ }
+ }
+ pktl = pktl->next;
+ }
+ if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
+ // Fixing the last reference frame had none pts issue (For MXF etc).
+ // We only do this when
+ // 1. eof.
+ // 2. we are not able to resolve a pts value for current packet.
+ // 3. the packets for this stream at the end of the files had valid dts.
+ next_pkt->pts = last_dts + next_pkt->duration;
+ }
+ pktl = s->packet_buffer;
+ }
+
+ /* read packet from packet buffer, if there is data */
+ if (!(next_pkt->pts == AV_NOPTS_VALUE &&
+ next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
+ ret = read_from_packet_buffer(&s->packet_buffer,
+ &s->packet_buffer_end, pkt);
+ goto return_packet;
+ }
+ }
+
+ ret = read_frame_internal(s, pkt);
+ if (ret < 0) {
+ if (pktl && ret != AVERROR(EAGAIN)) {
+ eof = 1;
+ continue;
+ } else
+ return ret;
+ }
+
+ if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
+ &s->packet_buffer_end)) < 0)
+ return AVERROR(ENOMEM);
+ }
+
+return_packet:
+
+ st = s->streams[pkt->stream_index];
+ if (st->skip_samples) {
+ uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
+ AV_WL32(p, st->skip_samples);
+ av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
+ st->skip_samples = 0;
+ }
+
+ if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
+ ff_reduce_index(s, st->index);
+ av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
+ }
+
+ if (is_relative(pkt->dts))
+ pkt->dts -= RELATIVE_TS_BASE;
+ if (is_relative(pkt->pts))
+ pkt->pts -= RELATIVE_TS_BASE;
+
+ return ret;
+}
+
+/* XXX: suppress the packet queue */
+static void flush_packet_queue(AVFormatContext *s)
+{
+ free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
+ free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
+ free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
+
+ s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
+}
+
+/*******************************************************/
+/* seek support */
+
+int av_find_default_stream_index(AVFormatContext *s)
+{
+ int first_audio_index = -1;
+ int i;
+ AVStream *st;
+
+ if (s->nb_streams <= 0)
+ return -1;
+ for(i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
+ !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
+ return i;
+ }
+ if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ first_audio_index = i;
+ }
+ return first_audio_index >= 0 ? first_audio_index : 0;
+}
+
+/**
+ * Flush the frame reader.
+ */
+void ff_read_frame_flush(AVFormatContext *s)
+{
+ AVStream *st;
+ int i, j;
+
+ flush_packet_queue(s);
+
+ /* for each stream, reset read state */
+ for(i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+
+ if (st->parser) {
+ av_parser_close(st->parser);
+ st->parser = NULL;
+ }
+ st->last_IP_pts = AV_NOPTS_VALUE;
+ if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
+ else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
+ st->reference_dts = AV_NOPTS_VALUE;
+
+ st->probe_packets = MAX_PROBE_PACKETS;
+
+ for(j=0; j<MAX_REORDER_DELAY+1; j++)
+ st->pts_buffer[j]= AV_NOPTS_VALUE;
+ }
+}
+
+void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
+{
+ int i;
+
+ for(i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+
+ st->cur_dts = av_rescale(timestamp,
+ st->time_base.den * (int64_t)ref_st->time_base.num,
+ st->time_base.num * (int64_t)ref_st->time_base.den);
+ }
+}
+
+void ff_reduce_index(AVFormatContext *s, int stream_index)
+{
+ AVStream *st= s->streams[stream_index];
+ unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
+
+ if((unsigned)st->nb_index_entries >= max_entries){
+ int i;
+ for(i=0; 2*i<st->nb_index_entries; i++)
+ st->index_entries[i]= st->index_entries[2*i];
+ st->nb_index_entries= i;
+ }
+}
+
+int ff_add_index_entry(AVIndexEntry **index_entries,
+ int *nb_index_entries,
+ unsigned int *index_entries_allocated_size,
+ int64_t pos, int64_t timestamp, int size, int distance, int flags)
+{
+ AVIndexEntry *entries, *ie;
+ int index;
+
+ if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
+ return -1;
+
+ if(timestamp == AV_NOPTS_VALUE)
+ return AVERROR(EINVAL);
+
+ if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
+ timestamp -= RELATIVE_TS_BASE;
+
+ entries = av_fast_realloc(*index_entries,
+ index_entries_allocated_size,
+ (*nb_index_entries + 1) *
+ sizeof(AVIndexEntry));
+ if(!entries)
+ return -1;
+
+ *index_entries= entries;
+
+ index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
+
+ if(index<0){
+ index= (*nb_index_entries)++;
+ ie= &entries[index];
+ assert(index==0 || ie[-1].timestamp < timestamp);
+ }else{
+ ie= &entries[index];
+ if(ie->timestamp != timestamp){
+ if(ie->timestamp <= timestamp)
+ return -1;
+ memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
+ (*nb_index_entries)++;
+ }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
+ distance= ie->min_distance;
+ }
+
+ ie->pos = pos;
+ ie->timestamp = timestamp;
+ ie->min_distance= distance;
+ ie->size= size;
+ ie->flags = flags;
+
+ return index;
+}
+
+int av_add_index_entry(AVStream *st,
+ int64_t pos, int64_t timestamp, int size, int distance, int flags)
+{
+ timestamp = wrap_timestamp(st, timestamp);
+ return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
+ &st->index_entries_allocated_size, pos,
+ timestamp, size, distance, flags);
+}
+
+int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
+ int64_t wanted_timestamp, int flags)
+{
+ int a, b, m;
+ int64_t timestamp;
+
+ a = - 1;
+ b = nb_entries;
+
+ //optimize appending index entries at the end
+ if(b && entries[b-1].timestamp < wanted_timestamp)
+ a= b-1;
+
+ while (b - a > 1) {
+ m = (a + b) >> 1;
+ timestamp = entries[m].timestamp;
+ if(timestamp >= wanted_timestamp)
+ b = m;
+ if(timestamp <= wanted_timestamp)
+ a = m;
+ }
+ m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
+
+ if(!(flags & AVSEEK_FLAG_ANY)){
+ while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
+ m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
+ }
+ }
+
+ if(m == nb_entries)
+ return -1;
+ return m;
+}
+
+int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
+ int flags)
+{
+ return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
+ wanted_timestamp, flags);
+}
+
+static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
+ int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
+{
+ int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
+ if (stream_index >= 0)
+ ts = wrap_timestamp(s->streams[stream_index], ts);
+ return ts;
+}
+
+int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
+{
+ AVInputFormat *avif= s->iformat;
+ int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
+ int64_t ts_min, ts_max, ts;
+ int index;
+ int64_t ret;
+ AVStream *st;
+
+ if (stream_index < 0)
+ return -1;
+
+ av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
+
+ ts_max=
+ ts_min= AV_NOPTS_VALUE;
+ pos_limit= -1; //gcc falsely says it may be uninitialized
+
+ st= s->streams[stream_index];
+ if(st->index_entries){
+ AVIndexEntry *e;
+
+ index= av_index_search_timestamp(st, target_ts, flags | AVSEEK_FLAG_BACKWARD); //FIXME whole func must be checked for non-keyframe entries in index case, especially read_timestamp()
+ index= FFMAX(index, 0);
+ e= &st->index_entries[index];
+
+ if(e->timestamp <= target_ts || e->pos == e->min_distance){
+ pos_min= e->pos;
+ ts_min= e->timestamp;
+ av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
+ pos_min, av_ts2str(ts_min));
+ }else{
+ assert(index==0);
+ }
+
+ index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
+ assert(index < st->nb_index_entries);
+ if(index >= 0){
+ e= &st->index_entries[index];
+ assert(e->timestamp >= target_ts);
+ pos_max= e->pos;
+ ts_max= e->timestamp;
+ pos_limit= pos_max - e->min_distance;
+ av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
+ pos_max, pos_limit, av_ts2str(ts_max));
+ }
+ }
+
+ pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
+ if(pos<0)
+ return -1;
+
+ /* do the seek */
+ if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
+ return ret;
+
+ ff_read_frame_flush(s);
+ ff_update_cur_dts(s, st, ts);
+
+ return 0;
+}
+
+int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
+ int64_t pos_min, int64_t pos_max, int64_t pos_limit,
+ int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
+ int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
+{
+ int64_t pos, ts;
+ int64_t start_pos, filesize;
+ int no_change;
+
+ av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
+
+ if(ts_min == AV_NOPTS_VALUE){
+ pos_min = s->data_offset;
+ ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
+ if (ts_min == AV_NOPTS_VALUE)
+ return -1;
+ }
+
+ if(ts_min >= target_ts){
+ *ts_ret= ts_min;
+ return pos_min;
+ }
+
+ if(ts_max == AV_NOPTS_VALUE){
+ int step= 1024;
+ filesize = avio_size(s->pb);
+ pos_max = filesize - 1;
+ do{
+ pos_max = FFMAX(0, pos_max - step);
+ ts_max = ff_read_timestamp(s, stream_index, &pos_max, pos_max + step, read_timestamp);
+ step += step;
+ }while(ts_max == AV_NOPTS_VALUE && pos_max > 0);
+ if (ts_max == AV_NOPTS_VALUE)
+ return -1;
+
+ for(;;){
+ int64_t tmp_pos= pos_max + 1;
+ int64_t tmp_ts= ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
+ if(tmp_ts == AV_NOPTS_VALUE)
+ break;
+ ts_max= tmp_ts;
+ pos_max= tmp_pos;
+ if(tmp_pos >= filesize)
+ break;
+ }
+ pos_limit= pos_max;
+ }
+
+ if(ts_max <= target_ts){
+ *ts_ret= ts_max;
+ return pos_max;
+ }
+
+ if(ts_min > ts_max){
+ return -1;
+ }else if(ts_min == ts_max){
+ pos_limit= pos_min;
+ }
+
+ no_change=0;
+ while (pos_min < pos_limit) {
+ av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
+ pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
+ assert(pos_limit <= pos_max);
+
+ if(no_change==0){
+ int64_t approximate_keyframe_distance= pos_max - pos_limit;
+ // interpolate position (better than dichotomy)
+ pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
+ + pos_min - approximate_keyframe_distance;
+ }else if(no_change==1){
+ // bisection, if interpolation failed to change min or max pos last time
+ pos = (pos_min + pos_limit)>>1;
+ }else{
+ /* linear search if bisection failed, can only happen if there
+ are very few or no keyframes between min/max */
+ pos=pos_min;
+ }
+ if(pos <= pos_min)
+ pos= pos_min + 1;
+ else if(pos > pos_limit)
+ pos= pos_limit;
+ start_pos= pos;
+
+ ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
+ if(pos == pos_max)
+ no_change++;
+ else
+ no_change=0;
+ av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
+ pos_min, pos, pos_max,
+ av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
+ pos_limit, start_pos, no_change);
+ if(ts == AV_NOPTS_VALUE){
+ av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
+ return -1;
+ }
+ assert(ts != AV_NOPTS_VALUE);
+ if (target_ts <= ts) {
+ pos_limit = start_pos - 1;
+ pos_max = pos;
+ ts_max = ts;
+ }
+ if (target_ts >= ts) {
+ pos_min = pos;
+ ts_min = ts;
+ }
+ }
+
+ pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
+ ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
+#if 0
+ pos_min = pos;
+ ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
+ pos_min++;
+ ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
+ av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
+ pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
+#endif
+ *ts_ret= ts;
+ return pos;
+}
+
+static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
+ int64_t pos_min, pos_max;
+
+ pos_min = s->data_offset;
+ pos_max = avio_size(s->pb) - 1;
+
+ if (pos < pos_min) pos= pos_min;
+ else if(pos > pos_max) pos= pos_max;
+
+ avio_seek(s->pb, pos, SEEK_SET);
+
+ return 0;
+}
+
+static int seek_frame_generic(AVFormatContext *s,
+ int stream_index, int64_t timestamp, int flags)
+{
+ int index;
+ int64_t ret;
+ AVStream *st;
+ AVIndexEntry *ie;
+
+ st = s->streams[stream_index];
+
+ index = av_index_search_timestamp(st, timestamp, flags);
+
+ if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
+ return -1;
+
+ if(index < 0 || index==st->nb_index_entries-1){
+ AVPacket pkt;
+ int nonkey=0;
+
+ if(st->nb_index_entries){
+ assert(st->index_entries);
+ ie= &st->index_entries[st->nb_index_entries-1];
+ if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
+ return ret;
+ ff_update_cur_dts(s, st, ie->timestamp);
+ }else{
+ if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
+ return ret;
+ }
+ for (;;) {
+ int read_status;
+ do{
+ read_status = av_read_frame(s, &pkt);
+ } while (read_status == AVERROR(EAGAIN));
+ if (read_status < 0)
+ break;
+ av_free_packet(&pkt);
+ if(stream_index == pkt.stream_index && pkt.dts > timestamp){
+ if(pkt.flags & AV_PKT_FLAG_KEY)
+ break;
+ if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
+ av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
+ break;
+ }
+ }
+ }
+ index = av_index_search_timestamp(st, timestamp, flags);
+ }
+ if (index < 0)
+ return -1;
+
+ ff_read_frame_flush(s);
+ if (s->iformat->read_seek){
+ if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
+ return 0;
+ }
+ ie = &st->index_entries[index];
+ if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
+ return ret;
+ ff_update_cur_dts(s, st, ie->timestamp);
+
+ return 0;
+}
+
+static int seek_frame_internal(AVFormatContext *s, int stream_index,
+ int64_t timestamp, int flags)
+{
+ int ret;
+ AVStream *st;
+
+ if (flags & AVSEEK_FLAG_BYTE) {
+ if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
+ return -1;
+ ff_read_frame_flush(s);
+ return seek_frame_byte(s, stream_index, timestamp, flags);
+ }
+
+ if(stream_index < 0){
+ stream_index= av_find_default_stream_index(s);
+ if(stream_index < 0)
+ return -1;
+
+ st= s->streams[stream_index];
+ /* timestamp for default must be expressed in AV_TIME_BASE units */
+ timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
+ }
+
+ /* first, we try the format specific seek */
+ if (s->iformat->read_seek) {
+ ff_read_frame_flush(s);
+ ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
+ } else
+ ret = -1;
+ if (ret >= 0) {
+ return 0;
+ }
+
+ if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
+ ff_read_frame_flush(s);
+ return ff_seek_frame_binary(s, stream_index, timestamp, flags);
+ } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
+ ff_read_frame_flush(s);
+ return seek_frame_generic(s, stream_index, timestamp, flags);
+ }
+ else
+ return -1;
+}
+
+int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+{
+ int ret = seek_frame_internal(s, stream_index, timestamp, flags);
+
+ if (ret >= 0)
+ ret = avformat_queue_attached_pictures(s);
+
+ return ret;
+}
+
+int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
+{
+ if(min_ts > ts || max_ts < ts)
+ return -1;
+ if (stream_index < -1 || stream_index >= (int)s->nb_streams)
+ return AVERROR(EINVAL);
+
+ if(s->seek2any>0)
+ flags |= AVSEEK_FLAG_ANY;
+
+ if (s->iformat->read_seek2) {
+ int ret;
+ ff_read_frame_flush(s);
+
+ if (stream_index == -1 && s->nb_streams == 1) {
+ AVRational time_base = s->streams[0]->time_base;
+ ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
+ min_ts = av_rescale_rnd(min_ts, time_base.den,
+ time_base.num * (int64_t)AV_TIME_BASE,
+ AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
+ max_ts = av_rescale_rnd(max_ts, time_base.den,
+ time_base.num * (int64_t)AV_TIME_BASE,
+ AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
+ }
+
+ ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
+
+ if (ret >= 0)
+ ret = avformat_queue_attached_pictures(s);
+ return ret;
+ }
+
+ if(s->iformat->read_timestamp){
+ //try to seek via read_timestamp()
+ }
+
+ //Fallback to old API if new is not implemented but old is
+ //Note the old has somewhat different semantics
+ if (s->iformat->read_seek || 1) {
+ int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
+ int ret = av_seek_frame(s, stream_index, ts, flags | dir);
+ if (ret<0 && ts != min_ts && max_ts != ts) {
+ ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
+ if (ret >= 0)
+ ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
+ }
+ return ret;
+ }
+
+ // try some generic seek like seek_frame_generic() but with new ts semantics
+ return -1; //unreachable
+}
+
+/*******************************************************/
+
+/**
+ * Return TRUE if the stream has accurate duration in any stream.
+ *
+ * @return TRUE if the stream has accurate duration for at least one component.
+ */
+static int has_duration(AVFormatContext *ic)
+{
+ int i;
+ AVStream *st;
+
+ for(i = 0;i < ic->nb_streams; i++) {
+ st = ic->streams[i];
+ if (st->duration != AV_NOPTS_VALUE)
+ return 1;
+ }
+ if (ic->duration != AV_NOPTS_VALUE)
+ return 1;
+ return 0;
+}
+
+/**
+ * Estimate the stream timings from the one of each components.
+ *
+ * Also computes the global bitrate if possible.
+ */
+static void update_stream_timings(AVFormatContext *ic)
+{
+ int64_t start_time, start_time1, start_time_text, end_time, end_time1;
+ int64_t duration, duration1, filesize;
+ int i;
+ AVStream *st;
+ AVProgram *p;
+
+ start_time = INT64_MAX;
+ start_time_text = INT64_MAX;
+ end_time = INT64_MIN;
+ duration = INT64_MIN;
+ for(i = 0;i < ic->nb_streams; i++) {
+ st = ic->streams[i];
+ if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
+ start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
+ if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
+ if (start_time1 < start_time_text)
+ start_time_text = start_time1;
+ } else
+ start_time = FFMIN(start_time, start_time1);
+ end_time1 = AV_NOPTS_VALUE;
+ if (st->duration != AV_NOPTS_VALUE) {
+ end_time1 = start_time1
+ + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
+ end_time = FFMAX(end_time, end_time1);
+ }
+ for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
+ if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
+ p->start_time = start_time1;
+ if(p->end_time < end_time1)
+ p->end_time = end_time1;
+ }
+ }
+ if (st->duration != AV_NOPTS_VALUE) {
+ duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
+ duration = FFMAX(duration, duration1);
+ }
+ }
+ if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
+ start_time = start_time_text;
+ else if(start_time > start_time_text)
+ av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
+
+ if (start_time != INT64_MAX) {
+ ic->start_time = start_time;
+ if (end_time != INT64_MIN) {
+ if (ic->nb_programs) {
+ for (i=0; i<ic->nb_programs; i++) {
+ p = ic->programs[i];
+ if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
+ duration = FFMAX(duration, p->end_time - p->start_time);
+ }
+ } else
+ duration = FFMAX(duration, end_time - start_time);
+ }
+ }
+ if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
+ ic->duration = duration;
+ }
+ if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
+ /* compute the bitrate */
+ double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
+ (double)ic->duration;
+ if (bitrate >= 0 && bitrate <= INT_MAX)
+ ic->bit_rate = bitrate;
+ }
+}
+
+static void fill_all_stream_timings(AVFormatContext *ic)
+{
+ int i;
+ AVStream *st;
+
+ update_stream_timings(ic);
+ for(i = 0;i < ic->nb_streams; i++) {
+ st = ic->streams[i];
+ if (st->start_time == AV_NOPTS_VALUE) {
+ if(ic->start_time != AV_NOPTS_VALUE)
+ st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
+ if(ic->duration != AV_NOPTS_VALUE)
+ st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
+ }
+ }
+}
+
+static void estimate_timings_from_bit_rate(AVFormatContext *ic)
+{
+ int64_t filesize, duration;
+ int bit_rate, i;
+ AVStream *st;
+
+ /* if bit_rate is already set, we believe it */
+ if (ic->bit_rate <= 0) {
+ bit_rate = 0;
+ for(i=0;i<ic->nb_streams;i++) {
+ st = ic->streams[i];
+ if (st->codec->bit_rate > 0)
+ bit_rate += st->codec->bit_rate;
+ }
+ ic->bit_rate = bit_rate;
+ }
+
+ /* if duration is already set, we believe it */
+ if (ic->duration == AV_NOPTS_VALUE &&
+ ic->bit_rate != 0) {
+ filesize = ic->pb ? avio_size(ic->pb) : 0;
+ if (filesize > 0) {
+ for(i = 0; i < ic->nb_streams; i++) {
+ st = ic->streams[i];
+ duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
+ if (st->duration == AV_NOPTS_VALUE)
+ st->duration = duration;
+ }
+ }
+ }
+}
+
+#define DURATION_MAX_READ_SIZE 250000LL
+#define DURATION_MAX_RETRY 4
+
+/* only usable for MPEG-PS streams */
+static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
+{
+ AVPacket pkt1, *pkt = &pkt1;
+ AVStream *st;
+ int read_size, i, ret;
+ int64_t end_time;
+ int64_t filesize, offset, duration;
+ int retry=0;
+
+ /* flush packet queue */
+ flush_packet_queue(ic);
+
+ for (i=0; i<ic->nb_streams; i++) {
+ st = ic->streams[i];
+ if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
+ av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
+
+ if (st->parser) {
+ av_parser_close(st->parser);
+ st->parser= NULL;
+ }
+ }
+
+ /* estimate the end time (duration) */
+ /* XXX: may need to support wrapping */
+ filesize = ic->pb ? avio_size(ic->pb) : 0;
+ end_time = AV_NOPTS_VALUE;
+ do{
+ offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
+ if (offset < 0)
+ offset = 0;
+
+ avio_seek(ic->pb, offset, SEEK_SET);
+ read_size = 0;
+ for(;;) {
+ if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
+ break;
+
+ do {
+ ret = ff_read_packet(ic, pkt);
+ } while(ret == AVERROR(EAGAIN));
+ if (ret != 0)
+ break;
+ read_size += pkt->size;
+ st = ic->streams[pkt->stream_index];
+ if (pkt->pts != AV_NOPTS_VALUE &&
+ (st->start_time != AV_NOPTS_VALUE ||
+ st->first_dts != AV_NOPTS_VALUE)) {
+ duration = end_time = pkt->pts;
+ if (st->start_time != AV_NOPTS_VALUE)
+ duration -= st->start_time;
+ else
+ duration -= st->first_dts;
+ if (duration > 0) {
+ if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
+ (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
+ st->duration = duration;
+ st->info->last_duration = duration;
+ }
+ }
+ av_free_packet(pkt);
+ }
+ }while( end_time==AV_NOPTS_VALUE
+ && filesize > (DURATION_MAX_READ_SIZE<<retry)
+ && ++retry <= DURATION_MAX_RETRY);
+
+ fill_all_stream_timings(ic);
+
+ avio_seek(ic->pb, old_offset, SEEK_SET);
+ for (i=0; i<ic->nb_streams; i++) {
+ st= ic->streams[i];
+ st->cur_dts= st->first_dts;
+ st->last_IP_pts = AV_NOPTS_VALUE;
+ st->reference_dts = AV_NOPTS_VALUE;
+ }
+}
+
+static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
+{
+ int64_t file_size;
+
+ /* get the file size, if possible */
+ if (ic->iformat->flags & AVFMT_NOFILE) {
+ file_size = 0;
+ } else {
+ file_size = avio_size(ic->pb);
+ file_size = FFMAX(0, file_size);
+ }
+
+ if ((!strcmp(ic->iformat->name, "mpeg") ||
+ !strcmp(ic->iformat->name, "mpegts")) &&
+ file_size && ic->pb->seekable) {
+ /* get accurate estimate from the PTSes */
+ estimate_timings_from_pts(ic, old_offset);
+ ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
+ } else if (has_duration(ic)) {
+ /* at least one component has timings - we use them for all
+ the components */
+ fill_all_stream_timings(ic);
+ ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
+ } else {
+ av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
+ /* less precise: use bitrate info */
+ estimate_timings_from_bit_rate(ic);
+ ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
+ }
+ update_stream_timings(ic);
+
+ {
+ int i;
+ AVStream av_unused *st;
+ for(i = 0;i < ic->nb_streams; i++) {
+ st = ic->streams[i];
+ av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
+ (double) st->start_time / AV_TIME_BASE,
+ (double) st->duration / AV_TIME_BASE);
+ }
+ av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
+ (double) ic->start_time / AV_TIME_BASE,
+ (double) ic->duration / AV_TIME_BASE,
+ ic->bit_rate / 1000);
+ }
+}
+
+static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
+{
+ AVCodecContext *avctx = st->codec;
+
+#define FAIL(errmsg) do { \
+ if (errmsg_ptr) \
+ *errmsg_ptr = errmsg; \
+ return 0; \
+ } while (0)
+
+ switch (avctx->codec_type) {
+ case AVMEDIA_TYPE_AUDIO:
+ if (!avctx->frame_size && determinable_frame_size(avctx))
+ FAIL("unspecified frame size");
+ if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
+ FAIL("unspecified sample format");
+ if (!avctx->sample_rate)
+ FAIL("unspecified sample rate");
+ if (!avctx->channels)
+ FAIL("unspecified number of channels");
+ if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
+ FAIL("no decodable DTS frames");
+ break;
+ case AVMEDIA_TYPE_VIDEO:
+ if (!avctx->width)
+ FAIL("unspecified size");
+ if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
+ FAIL("unspecified pixel format");
+ if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
+ if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
+ FAIL("no frame in rv30/40 and no sar");
+ break;
+ case AVMEDIA_TYPE_SUBTITLE:
+ if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
+ FAIL("unspecified size");
+ break;
+ case AVMEDIA_TYPE_DATA:
+ if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
+ }
+
+ if (avctx->codec_id == AV_CODEC_ID_NONE)
+ FAIL("unknown codec");
+ return 1;
+}
+
+/* returns 1 or 0 if or if not decoded data was returned, or a negative error */
+static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
+{
+ const AVCodec *codec;
+ int got_picture = 1, ret = 0;
+ AVFrame *frame = avcodec_alloc_frame();
+ AVSubtitle subtitle;
+ AVPacket pkt = *avpkt;
+
+ if (!frame)
+ return AVERROR(ENOMEM);
+
+ if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
+ AVDictionary *thread_opt = NULL;
+
+ codec = st->codec->codec ? st->codec->codec :
+ avcodec_find_decoder(st->codec->codec_id);
+
+ if (!codec) {
+ st->info->found_decoder = -1;
+ ret = -1;
+ goto fail;
+ }
+
+ /* force thread count to 1 since the h264 decoder will not extract SPS
+ * and PPS to extradata during multi-threaded decoding */
+ av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
+ ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
+ if (!options)
+ av_dict_free(&thread_opt);
+ if (ret < 0) {
+ st->info->found_decoder = -1;
+ goto fail;
+ }
+ st->info->found_decoder = 1;
+ } else if (!st->info->found_decoder)
+ st->info->found_decoder = 1;
+
+ if (st->info->found_decoder < 0) {
+ ret = -1;
+ goto fail;
+ }
+
+ while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
+ ret >= 0 &&
+ (!has_codec_parameters(st, NULL) ||
+ !has_decode_delay_been_guessed(st) ||
+ (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
+ got_picture = 0;
+ avcodec_get_frame_defaults(frame);
+ switch(st->codec->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ ret = avcodec_decode_video2(st->codec, frame,
+ &got_picture, &pkt);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
+ break;
+ case AVMEDIA_TYPE_SUBTITLE:
+ ret = avcodec_decode_subtitle2(st->codec, &subtitle,
+ &got_picture, &pkt);
+ ret = pkt.size;
+ break;
+ default:
+ break;
+ }
+ if (ret >= 0) {
+ if (got_picture)
+ st->nb_decoded_frames++;
+ pkt.data += ret;
+ pkt.size -= ret;
+ ret = got_picture;
+ }
+ }
+
+ if(!pkt.data && !got_picture)
+ ret = -1;
+
+fail:
+ avcodec_free_frame(&frame);
+ return ret;
+}
+
+unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
+{
+ while (tags->id != AV_CODEC_ID_NONE) {
+ if (tags->id == id)
+ return tags->tag;
+ tags++;
+ }
+ return 0;
+}
+
+enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
+{
+ int i;
+ for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
+ if(tag == tags[i].tag)
+ return tags[i].id;
+ }
+ for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
+ if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
+ return tags[i].id;
+ }
+ return AV_CODEC_ID_NONE;
+}
+
+enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
+{
+ if (flt) {
+ switch (bps) {
+ case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
+ case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
+ default: return AV_CODEC_ID_NONE;
+ }
+ } else {
+ bps += 7;
+ bps >>= 3;
+ if (sflags & (1 << (bps - 1))) {
+ switch (bps) {
+ case 1: return AV_CODEC_ID_PCM_S8;
+ case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
+ case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
+ case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
+ default: return AV_CODEC_ID_NONE;
+ }
+ } else {
+ switch (bps) {
+ case 1: return AV_CODEC_ID_PCM_U8;
+ case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
+ case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
+ case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
+ default: return AV_CODEC_ID_NONE;
+ }
+ }
+ }
+}
+
+unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
+{
+ unsigned int tag;
+ if (!av_codec_get_tag2(tags, id, &tag))
+ return 0;
+ return tag;
+}
+
+int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
+ unsigned int *tag)
+{
+ int i;
+ for(i=0; tags && tags[i]; i++){
+ const AVCodecTag *codec_tags = tags[i];
+ while (codec_tags->id != AV_CODEC_ID_NONE) {
+ if (codec_tags->id == id) {
+ *tag = codec_tags->tag;
+ return 1;
+ }
+ codec_tags++;
+ }
+ }
+ return 0;
+}
+
+enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
+{
+ int i;
+ for(i=0; tags && tags[i]; i++){
+ enum AVCodecID id= ff_codec_get_id(tags[i], tag);
+ if(id!=AV_CODEC_ID_NONE) return id;
+ }
+ return AV_CODEC_ID_NONE;
+}
+
+static void compute_chapters_end(AVFormatContext *s)
+{
+ unsigned int i, j;
+ int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
+
+ for (i = 0; i < s->nb_chapters; i++)
+ if (s->chapters[i]->end == AV_NOPTS_VALUE) {
+ AVChapter *ch = s->chapters[i];
+ int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
+ : INT64_MAX;
+
+ for (j = 0; j < s->nb_chapters; j++) {
+ AVChapter *ch1 = s->chapters[j];
+ int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
+ if (j != i && next_start > ch->start && next_start < end)
+ end = next_start;
+ }
+ ch->end = (end == INT64_MAX) ? ch->start : end;
+ }
+}
+
+static int get_std_framerate(int i){
+ if(i<60*12) return (i+1)*1001;
+ else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
+}
+
+/*
+ * Is the time base unreliable.
+ * This is a heuristic to balance between quick acceptance of the values in
+ * the headers vs. some extra checks.
+ * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
+ * MPEG-2 commonly misuses field repeat flags to store different framerates.
+ * And there are "variable" fps files this needs to detect as well.
+ */
+static int tb_unreliable(AVCodecContext *c){
+ if( c->time_base.den >= 101L*c->time_base.num
+ || c->time_base.den < 5L*c->time_base.num
+/* || c->codec_tag == AV_RL32("DIVX")
+ || c->codec_tag == AV_RL32("XVID")*/
+ || c->codec_tag == AV_RL32("mp4v")
+ || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
+ || c->codec_id == AV_CODEC_ID_H264
+ )
+ return 1;
+ return 0;
+}
+
+#if FF_API_FORMAT_PARAMETERS
+int av_find_stream_info(AVFormatContext *ic)
+{
+ return avformat_find_stream_info(ic, NULL);
+}
+#endif
+
+int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
+{
+ int i, count, ret, j;
+ int64_t read_size;
+ AVStream *st;
+ AVPacket pkt1, *pkt;
+ int64_t old_offset = avio_tell(ic->pb);
+ int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
+ int flush_codecs = ic->probesize > 0;
+
+ if(ic->pb)
+ av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
+
+ for(i=0;i<ic->nb_streams;i++) {
+ const AVCodec *codec;
+ AVDictionary *thread_opt = NULL;
+ st = ic->streams[i];
+
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
+ st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
+/* if(!st->time_base.num)
+ st->time_base= */
+ if(!st->codec->time_base.num)
+ st->codec->time_base= st->time_base;
+ }
+ //only for the split stuff
+ if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
+ st->parser = av_parser_init(st->codec->codec_id);
+ if(st->parser){
+ if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
+ st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
+ } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
+ st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
+ }
+ } else if (st->need_parsing) {
+ av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
+ "%s, packets or times may be invalid.\n",
+ avcodec_get_name(st->codec->codec_id));
+ }
+ }
+ codec = st->codec->codec ? st->codec->codec :
+ avcodec_find_decoder(st->codec->codec_id);
+
+ /* force thread count to 1 since the h264 decoder will not extract SPS
+ * and PPS to extradata during multi-threaded decoding */
+ av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
+
+ /* Ensure that subtitle_header is properly set. */
+ if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
+ && codec && !st->codec->codec)
+ avcodec_open2(st->codec, codec, options ? &options[i]
+ : &thread_opt);
+
+ //try to just open decoders, in case this is enough to get parameters
+ if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
+ if (codec && !st->codec->codec)
+ avcodec_open2(st->codec, codec, options ? &options[i]
+ : &thread_opt);
+ }
+ if (!options)
+ av_dict_free(&thread_opt);
+ }
+
+ for (i=0; i<ic->nb_streams; i++) {
+#if FF_API_R_FRAME_RATE
+ ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
+#endif
+ ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
+ ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
+ }
+
+ count = 0;
+ read_size = 0;
+ for(;;) {
+ if (ff_check_interrupt(&ic->interrupt_callback)){
+ ret= AVERROR_EXIT;
+ av_log(ic, AV_LOG_DEBUG, "interrupted\n");
+ break;
+ }
+
+ /* check if one codec still needs to be handled */
+ for(i=0;i<ic->nb_streams;i++) {
+ int fps_analyze_framecount = 20;
+
+ st = ic->streams[i];
+ if (!has_codec_parameters(st, NULL))
+ break;
+ /* if the timebase is coarse (like the usual millisecond precision
+ of mkv), we need to analyze more frames to reliably arrive at
+ the correct fps */
+ if (av_q2d(st->time_base) > 0.0005)
+ fps_analyze_framecount *= 2;
+ if (ic->fps_probe_size >= 0)
+ fps_analyze_framecount = ic->fps_probe_size;
+ if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
+ fps_analyze_framecount = 0;
+ /* variable fps and no guess at the real fps */
+ if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
+ && st->info->duration_count < fps_analyze_framecount
+ && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
+ break;
+ if(st->parser && st->parser->parser->split && !st->codec->extradata)
+ break;
+ if (st->first_dts == AV_NOPTS_VALUE &&
+ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
+ st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
+ break;
+ }
+ if (i == ic->nb_streams) {
+ /* NOTE: if the format has no header, then we need to read
+ some packets to get most of the streams, so we cannot
+ stop here */
+ if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
+ /* if we found the info for all the codecs, we can stop */
+ ret = count;
+ av_log(ic, AV_LOG_DEBUG, "All info found\n");
+ flush_codecs = 0;
+ break;
+ }
+ }
+ /* we did not get all the codec info, but we read too much data */
+ if (read_size >= ic->probesize) {
+ ret = count;
+ av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
+ for (i = 0; i < ic->nb_streams; i++)
+ if (!ic->streams[i]->r_frame_rate.num &&
+ ic->streams[i]->info->duration_count <= 1)
+ av_log(ic, AV_LOG_WARNING,
+ "Stream #%d: not enough frames to estimate rate; "
+ "consider increasing probesize\n", i);
+ break;
+ }
+
+ /* NOTE: a new stream can be added there if no header in file
+ (AVFMTCTX_NOHEADER) */
+ ret = read_frame_internal(ic, &pkt1);
+ if (ret == AVERROR(EAGAIN))
+ continue;
+
+ if (ret < 0) {
+ /* EOF or error*/
+ break;
+ }
+
+ if (ic->flags & AVFMT_FLAG_NOBUFFER) {
+ pkt = &pkt1;
+ } else {
+ pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
+ &ic->packet_buffer_end);
+ if ((ret = av_dup_packet(pkt)) < 0)
+ goto find_stream_info_err;
+ }
+
+ read_size += pkt->size;
+
+ st = ic->streams[pkt->stream_index];
+ if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
+ /* check for non-increasing dts */
+ if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
+ st->info->fps_last_dts >= pkt->dts) {
+ av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
+ "packet %d with DTS %"PRId64", packet %d with DTS "
+ "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
+ st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
+ st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
+ }
+ /* check for a discontinuity in dts - if the difference in dts
+ * is more than 1000 times the average packet duration in the sequence,
+ * we treat it as a discontinuity */
+ if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
+ st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
+ (pkt->dts - st->info->fps_last_dts) / 1000 >
+ (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
+ av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
+ "packet %d with DTS %"PRId64", packet %d with DTS "
+ "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
+ st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
+ st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
+ }
+
+ /* update stored dts values */
+ if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
+ st->info->fps_first_dts = pkt->dts;
+ st->info->fps_first_dts_idx = st->codec_info_nb_frames;
+ }
+ st->info->fps_last_dts = pkt->dts;
+ st->info->fps_last_dts_idx = st->codec_info_nb_frames;
+ }
+ if (st->codec_info_nb_frames>1) {
+ int64_t t=0;
+ if (st->time_base.den > 0)
+ t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
+ if (st->avg_frame_rate.num > 0)
+ t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
+
+ if (t >= ic->max_analyze_duration) {
+ av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
+ break;
+ }
+ if (pkt->duration) {
+ st->info->codec_info_duration += pkt->duration;
+ st->info->codec_info_duration_fields += st->parser && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
+ }
+ }
+#if FF_API_R_FRAME_RATE
+ {
+ int64_t last = st->info->last_dts;
+
+ if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
+ && pkt->dts - (uint64_t)last < INT64_MAX){
+ double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
+ int64_t duration= pkt->dts - last;
+
+ if (!st->info->duration_error)
+ st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
+
+// if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
+// av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
+ for (i=0; i<MAX_STD_TIMEBASES; i++) {
+ int framerate= get_std_framerate(i);
+ double sdts= dts*framerate/(1001*12);
+ for(j=0; j<2; j++){
+ int64_t ticks= llrint(sdts+j*0.5);
+ double error= sdts - ticks + j*0.5;
+ st->info->duration_error[j][0][i] += error;
+ st->info->duration_error[j][1][i] += error*error;
+ }
+ }
+ st->info->duration_count++;
+ // ignore the first 4 values, they might have some random jitter
+ if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
+ st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
+ }
+ if (pkt->dts != AV_NOPTS_VALUE)
+ st->info->last_dts = pkt->dts;
+ }
+#endif
+ if(st->parser && st->parser->parser->split && !st->codec->extradata){
+ int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
+ if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
+ st->codec->extradata_size= i;
+ st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return AVERROR(ENOMEM);
+ memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
+ memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
+ }
+ }
+
+ /* if still no information, we try to open the codec and to
+ decompress the frame. We try to avoid that in most cases as
+ it takes longer and uses more memory. For MPEG-4, we need to
+ decompress for QuickTime.
+
+ If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
+ least one frame of codec data, this makes sure the codec initializes
+ the channel configuration and does not only trust the values from the container.
+ */
+ try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
+
+ st->codec_info_nb_frames++;
+ count++;
+ }
+
+ if (flush_codecs) {
+ AVPacket empty_pkt = { 0 };
+ int err = 0;
+ av_init_packet(&empty_pkt);
+
+ ret = -1; /* we could not have all the codec parameters before EOF */
+ for(i=0;i<ic->nb_streams;i++) {
+ const char *errmsg;
+
+ st = ic->streams[i];
+
+ /* flush the decoders */
+ if (st->info->found_decoder == 1) {
+ do {
+ err = try_decode_frame(st, &empty_pkt,
+ (options && i < orig_nb_streams) ?
+ &options[i] : NULL);
+ } while (err > 0 && !has_codec_parameters(st, NULL));
+
+ if (err < 0) {
+ av_log(ic, AV_LOG_INFO,
+ "decoding for stream %d failed\n", st->index);
+ }
+ }
+
+ if (!has_codec_parameters(st, &errmsg)) {
+ char buf[256];
+ avcodec_string(buf, sizeof(buf), st->codec, 0);
+ av_log(ic, AV_LOG_WARNING,
+ "Could not find codec parameters for stream %d (%s): %s\n"
+ "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
+ i, buf, errmsg);
+ } else {
+ ret = 0;
+ }
+ }
+ }
+
+ // close codecs which were opened in try_decode_frame()
+ for(i=0;i<ic->nb_streams;i++) {
+ st = ic->streams[i];
+ avcodec_close(st->codec);
+ }
+ for(i=0;i<ic->nb_streams;i++) {
+ st = ic->streams[i];
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
+ uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
+ if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
+ st->codec->codec_tag= tag;
+ }
+
+ /* estimate average framerate if not set by demuxer */
+ if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
+ int best_fps = 0;
+ double best_error = 0.01;
+
+ av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
+ st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
+ st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
+
+ /* round guessed framerate to a "standard" framerate if it's
+ * within 1% of the original estimate*/
+ for (j = 1; j < MAX_STD_TIMEBASES; j++) {
+ AVRational std_fps = { get_std_framerate(j), 12*1001 };
+ double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
+
+ if (error < best_error) {
+ best_error = error;
+ best_fps = std_fps.num;
+ }
+ }
+ if (best_fps) {
+ av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
+ best_fps, 12*1001, INT_MAX);
+ }
+ }
+ // the check for tb_unreliable() is not completely correct, since this is not about handling
+ // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
+ // ipmovie.c produces.
+ if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
+ av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
+ if (st->info->duration_count>1 && !st->r_frame_rate.num
+ && tb_unreliable(st->codec)) {
+ int num = 0;
+ double best_error= 0.01;
+
+ for (j=0; j<MAX_STD_TIMEBASES; j++) {
+ int k;
+
+ if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
+ continue;
+ if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
+ continue;
+ for(k=0; k<2; k++){
+ int n= st->info->duration_count;
+ double a= st->info->duration_error[k][0][j] / n;
+ double error= st->info->duration_error[k][1][j]/n - a*a;
+
+ if(error < best_error && best_error> 0.000000001){
+ best_error= error;
+ num = get_std_framerate(j);
+ }
+ if(error < 0.02)
+ av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
+ }
+ }
+ // do not increase frame rate by more than 1 % in order to match a standard rate.
+ if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
+ av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
+ }
+
+ if (!st->r_frame_rate.num){
+ if( st->codec->time_base.den * (int64_t)st->time_base.num
+ <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
+ st->r_frame_rate.num = st->codec->time_base.den;
+ st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
+ }else{
+ st->r_frame_rate.num = st->time_base.den;
+ st->r_frame_rate.den = st->time_base.num;
+ }
+ }
+ }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
+ if(!st->codec->bits_per_coded_sample)
+ st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
+ // set stream disposition based on audio service type
+ switch (st->codec->audio_service_type) {
+ case AV_AUDIO_SERVICE_TYPE_EFFECTS:
+ st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
+ case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
+ st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
+ case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
+ st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
+ case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
+ st->disposition = AV_DISPOSITION_COMMENT; break;
+ case AV_AUDIO_SERVICE_TYPE_KARAOKE:
+ st->disposition = AV_DISPOSITION_KARAOKE; break;
+ }
+ }
+ }
+
+ if(ic->probesize)
+ estimate_timings(ic, old_offset);
+
+ compute_chapters_end(ic);
+
+ find_stream_info_err:
+ for (i=0; i < ic->nb_streams; i++) {
+ st = ic->streams[i];
+ if (ic->streams[i]->codec)
+ ic->streams[i]->codec->thread_count = 0;
+ if (st->info)
+ av_freep(&st->info->duration_error);
+ av_freep(&ic->streams[i]->info);
+ }
+ if(ic->pb)
+ av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
+ return ret;
+}
+
+AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
+{
+ int i, j;
+
+ for (i = 0; i < ic->nb_programs; i++) {
+ if (ic->programs[i] == last) {
+ last = NULL;
+ } else {
+ if (!last)
+ for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
+ if (ic->programs[i]->stream_index[j] == s)
+ return ic->programs[i];
+ }
+ }
+ return NULL;
+}
+
+int av_find_best_stream(AVFormatContext *ic,
+ enum AVMediaType type,
+ int wanted_stream_nb,
+ int related_stream,
+ AVCodec **decoder_ret,
+ int flags)
+{
+ int i, nb_streams = ic->nb_streams;
+ int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
+ unsigned *program = NULL;
+ AVCodec *decoder = NULL, *best_decoder = NULL;
+
+ if (related_stream >= 0 && wanted_stream_nb < 0) {
+ AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
+ if (p) {
+ program = p->stream_index;
+ nb_streams = p->nb_stream_indexes;
+ }
+ }
+ for (i = 0; i < nb_streams; i++) {
+ int real_stream_index = program ? program[i] : i;
+ AVStream *st = ic->streams[real_stream_index];
+ AVCodecContext *avctx = st->codec;
+ if (avctx->codec_type != type)
+ continue;
+ if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
+ continue;
+ if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
+ continue;
+ if (decoder_ret) {
+ decoder = avcodec_find_decoder(st->codec->codec_id);
+ if (!decoder) {
+ if (ret < 0)
+ ret = AVERROR_DECODER_NOT_FOUND;
+ continue;
+ }
+ }
+ count = st->codec_info_nb_frames;
+ bitrate = avctx->bit_rate;
+ multiframe = FFMIN(5, count);
+ if ((best_multiframe > multiframe) ||
+ (best_multiframe == multiframe && best_bitrate > bitrate) ||
+ (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
+ continue;
+ best_count = count;
+ best_bitrate = bitrate;
+ best_multiframe = multiframe;
+ ret = real_stream_index;
+ best_decoder = decoder;
+ if (program && i == nb_streams - 1 && ret < 0) {
+ program = NULL;
+ nb_streams = ic->nb_streams;
+ i = 0; /* no related stream found, try again with everything */
+ }
+ }
+ if (decoder_ret)
+ *decoder_ret = best_decoder;
+ return ret;
+}
+
+/*******************************************************/
+
+int av_read_play(AVFormatContext *s)
+{
+ if (s->iformat->read_play)
+ return s->iformat->read_play(s);
+ if (s->pb)
+ return avio_pause(s->pb, 0);
+ return AVERROR(ENOSYS);
+}
+
+int av_read_pause(AVFormatContext *s)
+{
+ if (s->iformat->read_pause)
+ return s->iformat->read_pause(s);
+ if (s->pb)
+ return avio_pause(s->pb, 1);
+ return AVERROR(ENOSYS);
+}
+
+void ff_free_stream(AVFormatContext *s, AVStream *st){
+ av_assert0(s->nb_streams>0);
+ av_assert0(s->streams[ s->nb_streams-1 ] == st);
+
+ if (st->parser) {
+ av_parser_close(st->parser);
+ }
+ if (st->attached_pic.data)
+ av_free_packet(&st->attached_pic);
+ av_dict_free(&st->metadata);
+ av_freep(&st->index_entries);
+ av_freep(&st->codec->extradata);
+ av_freep(&st->codec->subtitle_header);
+ av_freep(&st->codec);
+ av_freep(&st->priv_data);
+ if (st->info)
+ av_freep(&st->info->duration_error);
+ av_freep(&st->info);
+ av_freep(&st->probe_data.buf);
+ av_freep(&s->streams[ --s->nb_streams ]);
+}
+
+void avformat_free_context(AVFormatContext *s)
+{
+ int i;
+
+ if (!s)
+ return;
+
+ av_opt_free(s);
+ if (s->iformat && s->iformat->priv_class && s->priv_data)
+ av_opt_free(s->priv_data);
+
+ for(i=s->nb_streams-1; i>=0; i--) {
+ ff_free_stream(s, s->streams[i]);
+ }
+ for(i=s->nb_programs-1; i>=0; i--) {
+ av_dict_free(&s->programs[i]->metadata);
+ av_freep(&s->programs[i]->stream_index);
+ av_freep(&s->programs[i]);
+ }
+ av_freep(&s->programs);
+ av_freep(&s->priv_data);
+ while(s->nb_chapters--) {
+ av_dict_free(&s->chapters[s->nb_chapters]->metadata);
+ av_freep(&s->chapters[s->nb_chapters]);
+ }
+ av_freep(&s->chapters);
+ av_dict_free(&s->metadata);
+ av_freep(&s->streams);
+ av_free(s);
+}
+
+#if FF_API_CLOSE_INPUT_FILE
+void av_close_input_file(AVFormatContext *s)
+{
+ avformat_close_input(&s);
+}
+#endif
+
+void avformat_close_input(AVFormatContext **ps)
+{
+ AVFormatContext *s = *ps;
+ AVIOContext *pb = s->pb;
+
+ if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
+ (s->flags & AVFMT_FLAG_CUSTOM_IO))
+ pb = NULL;
+
+ flush_packet_queue(s);
+
+ if (s->iformat) {
+ if (s->iformat->read_close)
+ s->iformat->read_close(s);
+ }
+
+ avformat_free_context(s);
+
+ *ps = NULL;
+
+ avio_close(pb);
+}
+
+#if FF_API_NEW_STREAM
+AVStream *av_new_stream(AVFormatContext *s, int id)
+{
+ AVStream *st = avformat_new_stream(s, NULL);
+ if (st)
+ st->id = id;
+ return st;
+}
+#endif
+
+AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
+{
+ AVStream *st;
+ int i;
+ AVStream **streams;
+
+ if (s->nb_streams >= INT_MAX/sizeof(*streams))
+ return NULL;
+ streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
+ if (!streams)
+ return NULL;
+ s->streams = streams;
+
+ st = av_mallocz(sizeof(AVStream));
+ if (!st)
+ return NULL;
+ if (!(st->info = av_mallocz(sizeof(*st->info)))) {
+ av_free(st);
+ return NULL;
+ }
+ st->info->last_dts = AV_NOPTS_VALUE;
+
+ st->codec = avcodec_alloc_context3(c);
+ if (s->iformat) {
+ /* no default bitrate if decoding */
+ st->codec->bit_rate = 0;
+ }
+ st->index = s->nb_streams;
+ st->start_time = AV_NOPTS_VALUE;
+ st->duration = AV_NOPTS_VALUE;
+ /* we set the current DTS to 0 so that formats without any timestamps
+ but durations get some timestamps, formats with some unknown
+ timestamps have their first few packets buffered and the
+ timestamps corrected before they are returned to the user */
+ st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
+ st->first_dts = AV_NOPTS_VALUE;
+ st->probe_packets = MAX_PROBE_PACKETS;
+ st->pts_wrap_reference = AV_NOPTS_VALUE;
+ st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
+
+ /* default pts setting is MPEG-like */
+ avpriv_set_pts_info(st, 33, 1, 90000);
+ st->last_IP_pts = AV_NOPTS_VALUE;
+ for(i=0; i<MAX_REORDER_DELAY+1; i++)
+ st->pts_buffer[i]= AV_NOPTS_VALUE;
+ st->reference_dts = AV_NOPTS_VALUE;
+
+ st->sample_aspect_ratio = (AVRational){0,1};
+
+#if FF_API_R_FRAME_RATE
+ st->info->last_dts = AV_NOPTS_VALUE;
+#endif
+ st->info->fps_first_dts = AV_NOPTS_VALUE;
+ st->info->fps_last_dts = AV_NOPTS_VALUE;
+
+ s->streams[s->nb_streams++] = st;
+ return st;
+}
+
+AVProgram *av_new_program(AVFormatContext *ac, int id)
+{
+ AVProgram *program=NULL;
+ int i;
+
+ av_dlog(ac, "new_program: id=0x%04x\n", id);
+
+ for(i=0; i<ac->nb_programs; i++)
+ if(ac->programs[i]->id == id)
+ program = ac->programs[i];
+
+ if(!program){
+ program = av_mallocz(sizeof(AVProgram));
+ if (!program)
+ return NULL;
+ dynarray_add(&ac->programs, &ac->nb_programs, program);
+ program->discard = AVDISCARD_NONE;
+ }
+ program->id = id;
+ program->pts_wrap_reference = AV_NOPTS_VALUE;
+ program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
+
+ program->start_time =
+ program->end_time = AV_NOPTS_VALUE;
+
+ return program;
+}
+
+AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
+{
+ AVChapter *chapter = NULL;
+ int i;
+
+ for(i=0; i<s->nb_chapters; i++)
+ if(s->chapters[i]->id == id)
+ chapter = s->chapters[i];
+
+ if(!chapter){
+ chapter= av_mallocz(sizeof(AVChapter));
+ if(!chapter)
+ return NULL;
+ dynarray_add(&s->chapters, &s->nb_chapters, chapter);
+ }
+ av_dict_set(&chapter->metadata, "title", title, 0);
+ chapter->id = id;
+ chapter->time_base= time_base;
+ chapter->start = start;
+ chapter->end = end;
+
+ return chapter;
+}
+
+void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
+{
+ int i, j;
+ AVProgram *program=NULL;
+ void *tmp;
+
+ if (idx >= ac->nb_streams) {
+ av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
+ return;
+ }
+
+ for(i=0; i<ac->nb_programs; i++){
+ if(ac->programs[i]->id != progid)
+ continue;
+ program = ac->programs[i];
+ for(j=0; j<program->nb_stream_indexes; j++)
+ if(program->stream_index[j] == idx)
+ return;
+
+ tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
+ if(!tmp)
+ return;
+ program->stream_index = tmp;
+ program->stream_index[program->nb_stream_indexes++] = idx;
+ return;
+ }
+}
+
+static void print_fps(double d, const char *postfix){
+ uint64_t v= lrintf(d*100);
+ if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
+ else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
+ else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
+}
+
+static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
+{
+ if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
+ AVDictionaryEntry *tag=NULL;
+
+ av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
+ while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+ if(strcmp("language", tag->key)){
+ const char *p = tag->value;
+ av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
+ while(*p) {
+ char tmp[256];
+ size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
+ av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
+ av_log(ctx, AV_LOG_INFO, "%s", tmp);
+ p += len;
+ if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
+ if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
+ if (*p) p++;
+ }
+ av_log(ctx, AV_LOG_INFO, "\n");
+ }
+ }
+ }
+}
+
+/* "user interface" functions */
+static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
+{
+ char buf[256];
+ int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
+ AVStream *st = ic->streams[i];
+ int g = av_gcd(st->time_base.num, st->time_base.den);
+ AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
+ avcodec_string(buf, sizeof(buf), st->codec, is_output);
+ av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
+ /* the pid is an important information, so we display it */
+ /* XXX: add a generic system */
+ if (flags & AVFMT_SHOW_IDS)
+ av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
+ if (lang)
+ av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
+ av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
+ av_log(NULL, AV_LOG_INFO, ": %s", buf);
+ if (st->sample_aspect_ratio.num && // default
+ av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
+ AVRational display_aspect_ratio;
+ av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
+ st->codec->width*st->sample_aspect_ratio.num,
+ st->codec->height*st->sample_aspect_ratio.den,
+ 1024*1024);
+ av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
+ st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
+ display_aspect_ratio.num, display_aspect_ratio.den);
+ }
+ if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
+ if(st->avg_frame_rate.den && st->avg_frame_rate.num)
+ print_fps(av_q2d(st->avg_frame_rate), "fps");
+#if FF_API_R_FRAME_RATE
+ if(st->r_frame_rate.den && st->r_frame_rate.num)
+ print_fps(av_q2d(st->r_frame_rate), "tbr");
+#endif
+ if(st->time_base.den && st->time_base.num)
+ print_fps(1/av_q2d(st->time_base), "tbn");
+ if(st->codec->time_base.den && st->codec->time_base.num)
+ print_fps(1/av_q2d(st->codec->time_base), "tbc");
+ }
+ if (st->disposition & AV_DISPOSITION_DEFAULT)
+ av_log(NULL, AV_LOG_INFO, " (default)");
+ if (st->disposition & AV_DISPOSITION_DUB)
+ av_log(NULL, AV_LOG_INFO, " (dub)");
+ if (st->disposition & AV_DISPOSITION_ORIGINAL)
+ av_log(NULL, AV_LOG_INFO, " (original)");
+ if (st->disposition & AV_DISPOSITION_COMMENT)
+ av_log(NULL, AV_LOG_INFO, " (comment)");
+ if (st->disposition & AV_DISPOSITION_LYRICS)
+ av_log(NULL, AV_LOG_INFO, " (lyrics)");
+ if (st->disposition & AV_DISPOSITION_KARAOKE)
+ av_log(NULL, AV_LOG_INFO, " (karaoke)");
+ if (st->disposition & AV_DISPOSITION_FORCED)
+ av_log(NULL, AV_LOG_INFO, " (forced)");
+ if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
+ av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
+ if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
+ av_log(NULL, AV_LOG_INFO, " (visual impaired)");
+ if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
+ av_log(NULL, AV_LOG_INFO, " (clean effects)");
+ av_log(NULL, AV_LOG_INFO, "\n");
+ dump_metadata(NULL, st->metadata, " ");
+}
+
+void av_dump_format(AVFormatContext *ic,
+ int index,
+ const char *url,
+ int is_output)
+{
+ int i;
+ uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
+ if (ic->nb_streams && !printed)
+ return;
+
+ av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
+ is_output ? "Output" : "Input",
+ index,
+ is_output ? ic->oformat->name : ic->iformat->name,
+ is_output ? "to" : "from", url);
+ dump_metadata(NULL, ic->metadata, " ");
+ if (!is_output) {
+ av_log(NULL, AV_LOG_INFO, " Duration: ");
+ if (ic->duration != AV_NOPTS_VALUE) {
+ int hours, mins, secs, us;
+ int64_t duration = ic->duration + 5000;
+ secs = duration / AV_TIME_BASE;
+ us = duration % AV_TIME_BASE;
+ mins = secs / 60;
+ secs %= 60;
+ hours = mins / 60;
+ mins %= 60;
+ av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
+ (100 * us) / AV_TIME_BASE);
+ } else {
+ av_log(NULL, AV_LOG_INFO, "N/A");
+ }
+ if (ic->start_time != AV_NOPTS_VALUE) {
+ int secs, us;
+ av_log(NULL, AV_LOG_INFO, ", start: ");
+ secs = ic->start_time / AV_TIME_BASE;
+ us = abs(ic->start_time % AV_TIME_BASE);
+ av_log(NULL, AV_LOG_INFO, "%d.%06d",
+ secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
+ }
+ av_log(NULL, AV_LOG_INFO, ", bitrate: ");
+ if (ic->bit_rate) {
+ av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
+ } else {
+ av_log(NULL, AV_LOG_INFO, "N/A");
+ }
+ av_log(NULL, AV_LOG_INFO, "\n");
+ }
+ for (i = 0; i < ic->nb_chapters; i++) {
+ AVChapter *ch = ic->chapters[i];
+ av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
+ av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
+ av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
+
+ dump_metadata(NULL, ch->metadata, " ");
+ }
+ if(ic->nb_programs) {
+ int j, k, total = 0;
+ for(j=0; j<ic->nb_programs; j++) {
+ AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
+ "name", NULL, 0);
+ av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
+ name ? name->value : "");
+ dump_metadata(NULL, ic->programs[j]->metadata, " ");
+ for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
+ dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
+ printed[ic->programs[j]->stream_index[k]] = 1;
+ }
+ total += ic->programs[j]->nb_stream_indexes;
+ }
+ if (total < ic->nb_streams)
+ av_log(NULL, AV_LOG_INFO, " No Program\n");
+ }
+ for(i=0;i<ic->nb_streams;i++)
+ if (!printed[i])
+ dump_stream_format(ic, i, index, is_output);
+
+ av_free(printed);
+}
+
+uint64_t ff_ntp_time(void)
+{
+ return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
+}
+
+int av_get_frame_filename(char *buf, int buf_size,
+ const char *path, int number)
+{
+ const char *p;
+ char *q, buf1[20], c;
+ int nd, len, percentd_found;
+
+ q = buf;
+ p = path;
+ percentd_found = 0;
+ for(;;) {
+ c = *p++;
+ if (c == '\0')
+ break;
+ if (c == '%') {
+ do {
+ nd = 0;
+ while (av_isdigit(*p)) {
+ nd = nd * 10 + *p++ - '0';
+ }
+ c = *p++;
+ } while (av_isdigit(c));
+
+ switch(c) {
+ case '%':
+ goto addchar;
+ case 'd':
+ if (percentd_found)
+ goto fail;
+ percentd_found = 1;
+ snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
+ len = strlen(buf1);
+ if ((q - buf + len) > buf_size - 1)
+ goto fail;
+ memcpy(q, buf1, len);
+ q += len;
+ break;
+ default:
+ goto fail;
+ }
+ } else {
+ addchar:
+ if ((q - buf) < buf_size - 1)
+ *q++ = c;
+ }
+ }
+ if (!percentd_found)
+ goto fail;
+ *q = '\0';
+ return 0;
+ fail:
+ *q = '\0';
+ return -1;
+}
+
+static void hex_dump_internal(void *avcl, FILE *f, int level,
+ const uint8_t *buf, int size)
+{
+ int len, i, j, c;
+#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
+
+ for(i=0;i<size;i+=16) {
+ len = size - i;
+ if (len > 16)
+ len = 16;
+ PRINT("%08x ", i);
+ for(j=0;j<16;j++) {
+ if (j < len)
+ PRINT(" %02x", buf[i+j]);
+ else
+ PRINT(" ");
+ }
+ PRINT(" ");
+ for(j=0;j<len;j++) {
+ c = buf[i+j];
+ if (c < ' ' || c > '~')
+ c = '.';
+ PRINT("%c", c);
+ }
+ PRINT("\n");
+ }
+#undef PRINT
+}
+
+void av_hex_dump(FILE *f, const uint8_t *buf, int size)
+{
+ hex_dump_internal(NULL, f, 0, buf, size);
+}
+
+void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
+{
+ hex_dump_internal(avcl, NULL, level, buf, size);
+}
+
+static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
+{
+#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
+ PRINT("stream #%d:\n", pkt->stream_index);
+ PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
+ PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
+ /* DTS is _always_ valid after av_read_frame() */
+ PRINT(" dts=");
+ if (pkt->dts == AV_NOPTS_VALUE)
+ PRINT("N/A");
+ else
+ PRINT("%0.3f", pkt->dts * av_q2d(time_base));
+ /* PTS may not be known if B-frames are present. */
+ PRINT(" pts=");
+ if (pkt->pts == AV_NOPTS_VALUE)
+ PRINT("N/A");
+ else
+ PRINT("%0.3f", pkt->pts * av_q2d(time_base));
+ PRINT("\n");
+ PRINT(" size=%d\n", pkt->size);
+#undef PRINT
+ if (dump_payload)
+ av_hex_dump(f, pkt->data, pkt->size);
+}
+
+#if FF_API_PKT_DUMP
+void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
+{
+ AVRational tb = { 1, AV_TIME_BASE };
+ pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
+}
+#endif
+
+void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
+{
+ pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
+}
+
+#if FF_API_PKT_DUMP
+void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
+{
+ AVRational tb = { 1, AV_TIME_BASE };
+ pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
+}
+#endif
+
+void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
+ AVStream *st)
+{
+ pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
+}
+
+void av_url_split(char *proto, int proto_size,
+ char *authorization, int authorization_size,
+ char *hostname, int hostname_size,
+ int *port_ptr,
+ char *path, int path_size,
+ const char *url)
+{
+ const char *p, *ls, *ls2, *at, *at2, *col, *brk;
+
+ if (port_ptr) *port_ptr = -1;
+ if (proto_size > 0) proto[0] = 0;
+ if (authorization_size > 0) authorization[0] = 0;
+ if (hostname_size > 0) hostname[0] = 0;
+ if (path_size > 0) path[0] = 0;
+
+ /* parse protocol */
+ if ((p = strchr(url, ':'))) {
+ av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
+ p++; /* skip ':' */
+ if (*p == '/') p++;
+ if (*p == '/') p++;
+ } else {
+ /* no protocol means plain filename */
+ av_strlcpy(path, url, path_size);
+ return;
+ }
+
+ /* separate path from hostname */
+ ls = strchr(p, '/');
+ ls2 = strchr(p, '?');
+ if(!ls)
+ ls = ls2;
+ else if (ls && ls2)
+ ls = FFMIN(ls, ls2);
+ if(ls)
+ av_strlcpy(path, ls, path_size);
+ else
+ ls = &p[strlen(p)]; // XXX
+
+ /* the rest is hostname, use that to parse auth/port */
+ if (ls != p) {
+ /* authorization (user[:pass]@hostname) */
+ at2 = p;
+ while ((at = strchr(p, '@')) && at < ls) {
+ av_strlcpy(authorization, at2,
+ FFMIN(authorization_size, at + 1 - at2));
+ p = at + 1; /* skip '@' */
+ }
+
+ if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
+ /* [host]:port */
+ av_strlcpy(hostname, p + 1,
+ FFMIN(hostname_size, brk - p));
+ if (brk[1] == ':' && port_ptr)
+ *port_ptr = atoi(brk + 2);
+ } else if ((col = strchr(p, ':')) && col < ls) {
+ av_strlcpy(hostname, p,
+ FFMIN(col + 1 - p, hostname_size));
+ if (port_ptr) *port_ptr = atoi(col + 1);
+ } else
+ av_strlcpy(hostname, p,
+ FFMIN(ls + 1 - p, hostname_size));
+ }
+}
+
+char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
+{
+ int i;
+ static const char hex_table_uc[16] = { '0', '1', '2', '3',
+ '4', '5', '6', '7',
+ '8', '9', 'A', 'B',
+ 'C', 'D', 'E', 'F' };
+ static const char hex_table_lc[16] = { '0', '1', '2', '3',
+ '4', '5', '6', '7',
+ '8', '9', 'a', 'b',
+ 'c', 'd', 'e', 'f' };
+ const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
+
+ for(i = 0; i < s; i++) {
+ buff[i * 2] = hex_table[src[i] >> 4];
+ buff[i * 2 + 1] = hex_table[src[i] & 0xF];
+ }
+
+ return buff;
+}
+
+int ff_hex_to_data(uint8_t *data, const char *p)
+{
+ int c, len, v;
+
+ len = 0;
+ v = 1;
+ for (;;) {
+ p += strspn(p, SPACE_CHARS);
+ if (*p == '\0')
+ break;
+ c = av_toupper((unsigned char) *p++);
+ if (c >= '0' && c <= '9')
+ c = c - '0';
+ else if (c >= 'A' && c <= 'F')
+ c = c - 'A' + 10;
+ else
+ break;
+ v = (v << 4) | c;
+ if (v & 0x100) {
+ if (data)
+ data[len] = v;
+ len++;
+ v = 1;
+ }
+ }
+ return len;
+}
+
+#if FF_API_SET_PTS_INFO
+void av_set_pts_info(AVStream *s, int pts_wrap_bits,
+ unsigned int pts_num, unsigned int pts_den)
+{
+ avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
+}
+#endif
+
+void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
+ unsigned int pts_num, unsigned int pts_den)
+{
+ AVRational new_tb;
+ if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
+ if(new_tb.num != pts_num)
+ av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
+ }else
+ av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
+
+ if(new_tb.num <= 0 || new_tb.den <= 0) {
+ av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase %d/%d for st:%d\n", new_tb.num, new_tb.den, s->index);
+ return;
+ }
+ s->time_base = new_tb;
+ av_codec_set_pkt_timebase(s->codec, new_tb);
+ s->pts_wrap_bits = pts_wrap_bits;
+}
+
+int ff_url_join(char *str, int size, const char *proto,
+ const char *authorization, const char *hostname,
+ int port, const char *fmt, ...)
+{
+#if CONFIG_NETWORK
+ struct addrinfo hints = { 0 }, *ai;
+#endif
+
+ str[0] = '\0';
+ if (proto)
+ av_strlcatf(str, size, "%s://", proto);
+ if (authorization && authorization[0])
+ av_strlcatf(str, size, "%s@", authorization);
+#if CONFIG_NETWORK && defined(AF_INET6)
+ /* Determine if hostname is a numerical IPv6 address,
+ * properly escape it within [] in that case. */
+ hints.ai_flags = AI_NUMERICHOST;
+ if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
+ if (ai->ai_family == AF_INET6) {
+ av_strlcat(str, "[", size);
+ av_strlcat(str, hostname, size);
+ av_strlcat(str, "]", size);
+ } else {
+ av_strlcat(str, hostname, size);
+ }
+ freeaddrinfo(ai);
+ } else
+#endif
+ /* Not an IPv6 address, just output the plain string. */
+ av_strlcat(str, hostname, size);
+
+ if (port >= 0)
+ av_strlcatf(str, size, ":%d", port);
+ if (fmt) {
+ va_list vl;
+ int len = strlen(str);
+
+ va_start(vl, fmt);
+ vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
+ va_end(vl);
+ }
+ return strlen(str);
+}
+
+int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
+ AVFormatContext *src)
+{
+ AVPacket local_pkt;
+
+ local_pkt = *pkt;
+ local_pkt.stream_index = dst_stream;
+ if (pkt->pts != AV_NOPTS_VALUE)
+ local_pkt.pts = av_rescale_q(pkt->pts,
+ src->streams[pkt->stream_index]->time_base,
+ dst->streams[dst_stream]->time_base);
+ if (pkt->dts != AV_NOPTS_VALUE)
+ local_pkt.dts = av_rescale_q(pkt->dts,
+ src->streams[pkt->stream_index]->time_base,
+ dst->streams[dst_stream]->time_base);
+ if (pkt->duration)
+ local_pkt.duration = av_rescale_q(pkt->duration,
+ src->streams[pkt->stream_index]->time_base,
+ dst->streams[dst_stream]->time_base);
+ return av_write_frame(dst, &local_pkt);
+}
+
+void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
+ void *context)
+{
+ const char *ptr = str;
+
+ /* Parse key=value pairs. */
+ for (;;) {
+ const char *key;
+ char *dest = NULL, *dest_end;
+ int key_len, dest_len = 0;
+
+ /* Skip whitespace and potential commas. */
+ while (*ptr && (av_isspace(*ptr) || *ptr == ','))
+ ptr++;
+ if (!*ptr)
+ break;
+
+ key = ptr;
+
+ if (!(ptr = strchr(key, '=')))
+ break;
+ ptr++;
+ key_len = ptr - key;
+
+ callback_get_buf(context, key, key_len, &dest, &dest_len);
+ dest_end = dest + dest_len - 1;
+
+ if (*ptr == '\"') {
+ ptr++;
+ while (*ptr && *ptr != '\"') {
+ if (*ptr == '\\') {
+ if (!ptr[1])
+ break;
+ if (dest && dest < dest_end)
+ *dest++ = ptr[1];
+ ptr += 2;
+ } else {
+ if (dest && dest < dest_end)
+ *dest++ = *ptr;
+ ptr++;
+ }
+ }
+ if (*ptr == '\"')
+ ptr++;
+ } else {
+ for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
+ if (dest && dest < dest_end)
+ *dest++ = *ptr;
+ }
+ if (dest)
+ *dest = 0;
+ }
+}
+
+int ff_find_stream_index(AVFormatContext *s, int id)
+{
+ int i;
+ for (i = 0; i < s->nb_streams; i++) {
+ if (s->streams[i]->id == id)
+ return i;
+ }
+ return -1;
+}
+
+void ff_make_absolute_url(char *buf, int size, const char *base,
+ const char *rel)
+{
+ char *sep, *path_query;
+ /* Absolute path, relative to the current server */
+ if (base && strstr(base, "://") && rel[0] == '/') {
+ if (base != buf)
+ av_strlcpy(buf, base, size);
+ sep = strstr(buf, "://");
+ if (sep) {
+ /* Take scheme from base url */
+ if (rel[1] == '/') {
+ sep[1] = '\0';
+ } else {
+ /* Take scheme and host from base url */
+ sep += 3;
+ sep = strchr(sep, '/');
+ if (sep)
+ *sep = '\0';
+ }
+ }
+ av_strlcat(buf, rel, size);
+ return;
+ }
+ /* If rel actually is an absolute url, just copy it */
+ if (!base || strstr(rel, "://") || rel[0] == '/') {
+ av_strlcpy(buf, rel, size);
+ return;
+ }
+ if (base != buf)
+ av_strlcpy(buf, base, size);
+
+ /* Strip off any query string from base */
+ path_query = strchr(buf, '?');
+ if (path_query != NULL)
+ *path_query = '\0';
+
+ /* Is relative path just a new query part? */
+ if (rel[0] == '?') {
+ av_strlcat(buf, rel, size);
+ return;
+ }
+
+ /* Remove the file name from the base url */
+ sep = strrchr(buf, '/');
+ if (sep)
+ sep[1] = '\0';
+ else
+ buf[0] = '\0';
+ while (av_strstart(rel, "../", NULL) && sep) {
+ /* Remove the path delimiter at the end */
+ sep[0] = '\0';
+ sep = strrchr(buf, '/');
+ /* If the next directory name to pop off is "..", break here */
+ if (!strcmp(sep ? &sep[1] : buf, "..")) {
+ /* Readd the slash we just removed */
+ av_strlcat(buf, "/", size);
+ break;
+ }
+ /* Cut off the directory name */
+ if (sep)
+ sep[1] = '\0';
+ else
+ buf[0] = '\0';
+ rel += 3;
+ }
+ av_strlcat(buf, rel, size);
+}
+
+int64_t ff_iso8601_to_unix_time(const char *datestr)
+{
+ struct tm time1 = {0}, time2 = {0};
+ char *ret1, *ret2;
+ ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
+ ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
+ if (ret2 && !ret1)
+ return av_timegm(&time2);
+ else
+ return av_timegm(&time1);
+}
+
+int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
+{
+ if (ofmt) {
+ if (ofmt->query_codec)
+ return ofmt->query_codec(codec_id, std_compliance);
+ else if (ofmt->codec_tag)
+ return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
+ else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
+ codec_id == ofmt->subtitle_codec)
+ return 1;
+ }
+ return AVERROR_PATCHWELCOME;
+}
+
+int avformat_network_init(void)
+{
+#if CONFIG_NETWORK
+ int ret;
+ ff_network_inited_globally = 1;
+ if ((ret = ff_network_init()) < 0)
+ return ret;
+ ff_tls_init();
+#endif
+ return 0;
+}
+
+int avformat_network_deinit(void)
+{
+#if CONFIG_NETWORK
+ ff_network_close();
+ ff_tls_deinit();
+#endif
+ return 0;
+}
+
+int ff_add_param_change(AVPacket *pkt, int32_t channels,
+ uint64_t channel_layout, int32_t sample_rate,
+ int32_t width, int32_t height)
+{
+ uint32_t flags = 0;
+ int size = 4;
+ uint8_t *data;
+ if (!pkt)
+ return AVERROR(EINVAL);
+ if (channels) {
+ size += 4;
+ flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
+ }
+ if (channel_layout) {
+ size += 8;
+ flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
+ }
+ if (sample_rate) {
+ size += 4;
+ flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
+ }
+ if (width || height) {
+ size += 8;
+ flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
+ }
+ data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
+ if (!data)
+ return AVERROR(ENOMEM);
+ bytestream_put_le32(&data, flags);
+ if (channels)
+ bytestream_put_le32(&data, channels);
+ if (channel_layout)
+ bytestream_put_le64(&data, channel_layout);
+ if (sample_rate)
+ bytestream_put_le32(&data, sample_rate);
+ if (width || height) {
+ bytestream_put_le32(&data, width);
+ bytestream_put_le32(&data, height);
+ }
+ return 0;
+}
+
+const struct AVCodecTag *avformat_get_riff_video_tags(void)
+{
+ return ff_codec_bmp_tags;
+}
+const struct AVCodecTag *avformat_get_riff_audio_tags(void)
+{
+ return ff_codec_wav_tags;
+}
+
+AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
+{
+ AVRational undef = {0, 1};
+ AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
+ AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
+ AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
+
+ av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
+ stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
+ if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
+ stream_sample_aspect_ratio = undef;
+
+ av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
+ frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
+ if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
+ frame_sample_aspect_ratio = undef;
+
+ if (stream_sample_aspect_ratio.num)
+ return stream_sample_aspect_ratio;
+ else
+ return frame_sample_aspect_ratio;
+}
+
+int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
+ const char *spec)
+{
+ if (*spec <= '9' && *spec >= '0') /* opt:index */
+ return strtol(spec, NULL, 0) == st->index;
+ else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
+ *spec == 't') { /* opt:[vasdt] */
+ enum AVMediaType type;
+
+ switch (*spec++) {
+ case 'v': type = AVMEDIA_TYPE_VIDEO; break;
+ case 'a': type = AVMEDIA_TYPE_AUDIO; break;
+ case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
+ case 'd': type = AVMEDIA_TYPE_DATA; break;
+ case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
+ default: av_assert0(0);
+ }
+ if (type != st->codec->codec_type)
+ return 0;
+ if (*spec++ == ':') { /* possibly followed by :index */
+ int i, index = strtol(spec, NULL, 0);
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->codec->codec_type == type && index-- == 0)
+ return i == st->index;
+ return 0;
+ }
+ return 1;
+ } else if (*spec == 'p' && *(spec + 1) == ':') {
+ int prog_id, i, j;
+ char *endptr;
+ spec += 2;
+ prog_id = strtol(spec, &endptr, 0);
+ for (i = 0; i < s->nb_programs; i++) {
+ if (s->programs[i]->id != prog_id)
+ continue;
+
+ if (*endptr++ == ':') {
+ int stream_idx = strtol(endptr, NULL, 0);
+ return stream_idx >= 0 &&
+ stream_idx < s->programs[i]->nb_stream_indexes &&
+ st->index == s->programs[i]->stream_index[stream_idx];
+ }
+
+ for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
+ if (st->index == s->programs[i]->stream_index[j])
+ return 1;
+ }
+ return 0;
+ } else if (*spec == '#') {
+ int sid;
+ char *endptr;
+ sid = strtol(spec + 1, &endptr, 0);
+ if (!*endptr)
+ return st->id == sid;
+ } else if (!*spec) /* empty specifier, matches everything */
+ return 1;
+
+ av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
+ return AVERROR(EINVAL);
+}
+
+void ff_generate_avci_extradata(AVStream *st)
+{
+ static const uint8_t avci100_1080p_extradata[] = {
+ // SPS
+ 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
+ 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
+ 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
+ 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
+ 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
+ 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
+ 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
+ 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
+ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ // PPS
+ 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
+ 0xd0
+ };
+ static const uint8_t avci100_1080i_extradata[] = {
+ // SPS
+ 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
+ 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
+ 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
+ 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
+ 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
+ 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
+ 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
+ 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
+ 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
+ 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
+ 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
+ // PPS
+ 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
+ 0xd0
+ };
+ static const uint8_t avci50_1080i_extradata[] = {
+ // SPS
+ 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
+ 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
+ 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
+ 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
+ 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
+ 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
+ 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
+ 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
+ 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
+ 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
+ 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
+ // PPS
+ 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
+ 0x11
+ };
+ static const uint8_t avci100_720p_extradata[] = {
+ // SPS
+ 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
+ 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
+ 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
+ 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
+ 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
+ 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
+ 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
+ 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
+ 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
+ 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
+ // PPS
+ 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
+ 0x11
+ };
+ int size = 0;
+ const uint8_t *data = 0;
+ if (st->codec->width == 1920) {
+ if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
+ data = avci100_1080p_extradata;
+ size = sizeof(avci100_1080p_extradata);
+ } else {
+ data = avci100_1080i_extradata;
+ size = sizeof(avci100_1080i_extradata);
+ }
+ } else if (st->codec->width == 1440) {
+ data = avci50_1080i_extradata;
+ size = sizeof(avci50_1080i_extradata);
+ } else if (st->codec->width == 1280) {
+ data = avci100_720p_extradata;
+ size = sizeof(avci100_720p_extradata);
+ }
+ if (!size)
+ return;
+ av_freep(&st->codec->extradata);
+ st->codec->extradata_size = 0;
+ st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codec->extradata)
+ return;
+ memcpy(st->codec->extradata, data, size);
+ st->codec->extradata_size = size;
+}
+
+static int match_host_pattern(const char *pattern, const char *hostname)
+{
+ int len_p, len_h;
+ if (!strcmp(pattern, "*"))
+ return 1;
+ // Skip a possible *. at the start of the pattern
+ if (pattern[0] == '*')
+ pattern++;
+ if (pattern[0] == '.')
+ pattern++;
+ len_p = strlen(pattern);
+ len_h = strlen(hostname);
+ if (len_p > len_h)
+ return 0;
+ // Simply check if the end of hostname is equal to 'pattern'
+ if (!strcmp(pattern, &hostname[len_h - len_p])) {
+ if (len_h == len_p)
+ return 1; // Exact match
+ if (hostname[len_h - len_p - 1] == '.')
+ return 1; // The matched substring is a domain and not just a substring of a domain
+ }
+ return 0;
+}
+
+int ff_http_match_no_proxy(const char *no_proxy, const char *hostname)
+{
+ char *buf, *start;
+ int ret = 0;
+ if (!no_proxy)
+ return 0;
+ if (!hostname)
+ return 0;
+ buf = av_strdup(no_proxy);
+ if (!buf)
+ return 0;
+ start = buf;
+ while (start) {
+ char *sep, *next = NULL;
+ start += strspn(start, " ,");
+ sep = start + strcspn(start, " ,");
+ if (*sep) {
+ next = sep + 1;
+ *sep = '\0';
+ }
+ if (match_host_pattern(start, hostname)) {
+ ret = 1;
+ break;
+ }
+ start = next;
+ }
+ av_free(buf);
+ return ret;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 15:14:35 +0000