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Diffstat (limited to 'ffmpeg/libavformat/tee.c')
-rw-r--r--ffmpeg/libavformat/tee.c498
1 files changed, 0 insertions, 498 deletions
diff --git a/ffmpeg/libavformat/tee.c b/ffmpeg/libavformat/tee.c
deleted file mode 100644
index 12ea0ea..0000000
--- a/ffmpeg/libavformat/tee.c
+++ /dev/null
@@ -1,498 +0,0 @@
-/*
- * Tee pseudo-muxer
- * Copyright (c) 2012 Nicolas George
- *
- * 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
- */
-
-
-#include "libavutil/avutil.h"
-#include "libavutil/avstring.h"
-#include "libavutil/opt.h"
-#include "avformat.h"
-
-#define MAX_SLAVES 16
-
-typedef struct {
- AVFormatContext *avf;
- AVBitStreamFilterContext **bsfs; ///< bitstream filters per stream
-
- /** map from input to output streams indexes,
- * disabled output streams are set to -1 */
- int *stream_map;
-} TeeSlave;
-
-typedef struct TeeContext {
- const AVClass *class;
- unsigned nb_slaves;
- TeeSlave slaves[MAX_SLAVES];
-} TeeContext;
-
-static const char *const slave_delim = "|";
-static const char *const slave_opt_open = "[";
-static const char *const slave_opt_close = "]";
-static const char *const slave_opt_delim = ":]"; /* must have the close too */
-static const char *const slave_bsfs_spec_sep = "/";
-
-static const AVClass tee_muxer_class = {
- .class_name = "Tee muxer",
- .item_name = av_default_item_name,
- .version = LIBAVUTIL_VERSION_INT,
-};
-
-static int parse_slave_options(void *log, char *slave,
- AVDictionary **options, char **filename)
-{
- const char *p;
- char *key, *val;
- int ret;
-
- if (!strspn(slave, slave_opt_open)) {
- *filename = slave;
- return 0;
- }
- p = slave + 1;
- if (strspn(p, slave_opt_close)) {
- *filename = (char *)p + 1;
- return 0;
- }
- while (1) {
- ret = av_opt_get_key_value(&p, "=", slave_opt_delim, 0, &key, &val);
- if (ret < 0) {
- av_log(log, AV_LOG_ERROR, "No option found near \"%s\"\n", p);
- goto fail;
- }
- ret = av_dict_set(options, key, val,
- AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
- if (ret < 0)
- goto fail;
- if (strspn(p, slave_opt_close))
- break;
- p++;
- }
- *filename = (char *)p + 1;
- return 0;
-
-fail:
- av_dict_free(options);
- return ret;
-}
-
-/**
- * Parse list of bitstream filters and add them to the list of filters
- * pointed to by bsfs.
- *
- * The list must be specified in the form:
- * BSFS ::= BSF[,BSFS]
- */
-static int parse_bsfs(void *log_ctx, const char *bsfs_spec,
- AVBitStreamFilterContext **bsfs)
-{
- char *bsf_name, *buf, *dup, *saveptr;
- int ret = 0;
-
- if (!(dup = buf = av_strdup(bsfs_spec)))
- return AVERROR(ENOMEM);
-
- while (bsf_name = av_strtok(buf, ",", &saveptr)) {
- AVBitStreamFilterContext *bsf = av_bitstream_filter_init(bsf_name);
-
- if (!bsf) {
- av_log(log_ctx, AV_LOG_ERROR,
- "Cannot initialize bitstream filter with name '%s', "
- "unknown filter or internal error happened\n",
- bsf_name);
- ret = AVERROR_UNKNOWN;
- goto end;
- }
-
- /* append bsf context to the list of bsf contexts */
- *bsfs = bsf;
- bsfs = &bsf->next;
-
- buf = NULL;
- }
-
-end:
- av_free(dup);
- return ret;
-}
-
-static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
-{
- int i, ret;
- AVDictionary *options = NULL;
- AVDictionaryEntry *entry;
- char *filename;
- char *format = NULL, *select = NULL;
- AVFormatContext *avf2 = NULL;
- AVStream *st, *st2;
- int stream_count;
-
- if ((ret = parse_slave_options(avf, slave, &options, &filename)) < 0)
- return ret;
-
-#define STEAL_OPTION(option, field) do { \
- if ((entry = av_dict_get(options, option, NULL, 0))) { \
- field = entry->value; \
- entry->value = NULL; /* prevent it from being freed */ \
- av_dict_set(&options, option, NULL, 0); \
- } \
- } while (0)
-
- STEAL_OPTION("f", format);
- STEAL_OPTION("select", select);
-
- ret = avformat_alloc_output_context2(&avf2, NULL, format, filename);
- if (ret < 0)
- goto end;
- av_dict_copy(&avf2->metadata, avf->metadata, 0);
-
- tee_slave->stream_map = av_calloc(avf->nb_streams, sizeof(*tee_slave->stream_map));
- if (!tee_slave->stream_map) {
- ret = AVERROR(ENOMEM);
- goto end;
- }
-
- stream_count = 0;
- for (i = 0; i < avf->nb_streams; i++) {
- st = avf->streams[i];
- if (select) {
- ret = avformat_match_stream_specifier(avf, avf->streams[i], select);
- if (ret < 0) {
- av_log(avf, AV_LOG_ERROR,
- "Invalid stream specifier '%s' for output '%s'\n",
- select, slave);
- goto end;
- }
-
- if (ret == 0) { /* no match */
- tee_slave->stream_map[i] = -1;
- continue;
- }
- }
- tee_slave->stream_map[i] = stream_count++;
-
- if (!(st2 = avformat_new_stream(avf2, NULL))) {
- ret = AVERROR(ENOMEM);
- goto end;
- }
- st2->id = st->id;
- st2->r_frame_rate = st->r_frame_rate;
- st2->time_base = st->time_base;
- st2->start_time = st->start_time;
- st2->duration = st->duration;
- st2->nb_frames = st->nb_frames;
- st2->disposition = st->disposition;
- st2->sample_aspect_ratio = st->sample_aspect_ratio;
- st2->avg_frame_rate = st->avg_frame_rate;
- av_dict_copy(&st2->metadata, st->metadata, 0);
- if ((ret = avcodec_copy_context(st2->codec, st->codec)) < 0)
- goto end;
- }
-
- if (!(avf2->oformat->flags & AVFMT_NOFILE)) {
- if ((ret = avio_open(&avf2->pb, filename, AVIO_FLAG_WRITE)) < 0) {
- av_log(avf, AV_LOG_ERROR, "Slave '%s': error opening: %s\n",
- slave, av_err2str(ret));
- goto end;
- }
- }
-
- if ((ret = avformat_write_header(avf2, &options)) < 0) {
- av_log(avf, AV_LOG_ERROR, "Slave '%s': error writing header: %s\n",
- slave, av_err2str(ret));
- goto end;
- }
-
- tee_slave->avf = avf2;
- tee_slave->bsfs = av_calloc(avf2->nb_streams, sizeof(TeeSlave));
- if (!tee_slave->bsfs) {
- ret = AVERROR(ENOMEM);
- goto end;
- }
-
- entry = NULL;
- while (entry = av_dict_get(options, "bsfs", NULL, AV_DICT_IGNORE_SUFFIX)) {
- const char *spec = entry->key + strlen("bsfs");
- if (*spec) {
- if (strspn(spec, slave_bsfs_spec_sep) != 1) {
- av_log(avf, AV_LOG_ERROR,
- "Specifier separator in '%s' is '%c', but only characters '%s' "
- "are allowed\n", entry->key, *spec, slave_bsfs_spec_sep);
- return AVERROR(EINVAL);
- }
- spec++; /* consume separator */
- }
-
- for (i = 0; i < avf2->nb_streams; i++) {
- ret = avformat_match_stream_specifier(avf2, avf2->streams[i], spec);
- if (ret < 0) {
- av_log(avf, AV_LOG_ERROR,
- "Invalid stream specifier '%s' in bsfs option '%s' for slave "
- "output '%s'\n", spec, entry->key, filename);
- goto end;
- }
-
- if (ret > 0) {
- av_log(avf, AV_LOG_DEBUG, "spec:%s bsfs:%s matches stream %d of slave "
- "output '%s'\n", spec, entry->value, i, filename);
- if (tee_slave->bsfs[i]) {
- av_log(avf, AV_LOG_WARNING,
- "Duplicate bsfs specification associated to stream %d of slave "
- "output '%s', filters will be ignored\n", i, filename);
- continue;
- }
- ret = parse_bsfs(avf, entry->value, &tee_slave->bsfs[i]);
- if (ret < 0) {
- av_log(avf, AV_LOG_ERROR,
- "Error parsing bitstream filter sequence '%s' associated to "
- "stream %d of slave output '%s'\n", entry->value, i, filename);
- goto end;
- }
- }
- }
-
- av_dict_set(&options, entry->key, NULL, 0);
- }
-
- if (options) {
- entry = NULL;
- while ((entry = av_dict_get(options, "", entry, AV_DICT_IGNORE_SUFFIX)))
- av_log(avf2, AV_LOG_ERROR, "Unknown option '%s'\n", entry->key);
- ret = AVERROR_OPTION_NOT_FOUND;
- goto end;
- }
-
-end:
- av_free(format);
- av_free(select);
- av_dict_free(&options);
- return ret;
-}
-
-static void close_slaves(AVFormatContext *avf)
-{
- TeeContext *tee = avf->priv_data;
- AVFormatContext *avf2;
- unsigned i, j;
-
- for (i = 0; i < tee->nb_slaves; i++) {
- avf2 = tee->slaves[i].avf;
-
- for (j = 0; j < avf2->nb_streams; j++) {
- AVBitStreamFilterContext *bsf_next, *bsf = tee->slaves[i].bsfs[j];
- while (bsf) {
- bsf_next = bsf->next;
- av_bitstream_filter_close(bsf);
- bsf = bsf_next;
- }
- }
- av_freep(&tee->slaves[i].stream_map);
- av_freep(&tee->slaves[i].bsfs);
-
- avio_close(avf2->pb);
- avf2->pb = NULL;
- avformat_free_context(avf2);
- tee->slaves[i].avf = NULL;
- }
-}
-
-static void log_slave(TeeSlave *slave, void *log_ctx, int log_level)
-{
- int i;
- av_log(log_ctx, log_level, "filename:'%s' format:%s\n",
- slave->avf->filename, slave->avf->oformat->name);
- for (i = 0; i < slave->avf->nb_streams; i++) {
- AVStream *st = slave->avf->streams[i];
- AVBitStreamFilterContext *bsf = slave->bsfs[i];
-
- av_log(log_ctx, log_level, " stream:%d codec:%s type:%s",
- i, avcodec_get_name(st->codec->codec_id),
- av_get_media_type_string(st->codec->codec_type));
- if (bsf) {
- av_log(log_ctx, log_level, " bsfs:");
- while (bsf) {
- av_log(log_ctx, log_level, "%s%s",
- bsf->filter->name, bsf->next ? "," : "");
- bsf = bsf->next;
- }
- }
- av_log(log_ctx, log_level, "\n");
- }
-}
-
-static int tee_write_header(AVFormatContext *avf)
-{
- TeeContext *tee = avf->priv_data;
- unsigned nb_slaves = 0, i;
- const char *filename = avf->filename;
- char *slaves[MAX_SLAVES];
- int ret;
-
- while (*filename) {
- if (nb_slaves == MAX_SLAVES) {
- av_log(avf, AV_LOG_ERROR, "Maximum %d slave muxers reached.\n",
- MAX_SLAVES);
- ret = AVERROR_PATCHWELCOME;
- goto fail;
- }
- if (!(slaves[nb_slaves++] = av_get_token(&filename, slave_delim))) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- if (strspn(filename, slave_delim))
- filename++;
- }
-
- for (i = 0; i < nb_slaves; i++) {
- if ((ret = open_slave(avf, slaves[i], &tee->slaves[i])) < 0)
- goto fail;
- log_slave(&tee->slaves[i], avf, AV_LOG_VERBOSE);
- av_freep(&slaves[i]);
- }
-
- tee->nb_slaves = nb_slaves;
-
- for (i = 0; i < avf->nb_streams; i++) {
- int j, mapped = 0;
- for (j = 0; j < tee->nb_slaves; j++)
- mapped += tee->slaves[j].stream_map[i] >= 0;
- if (!mapped)
- av_log(avf, AV_LOG_WARNING, "Input stream #%d is not mapped "
- "to any slave.\n", i);
- }
- return 0;
-
-fail:
- for (i = 0; i < nb_slaves; i++)
- av_freep(&slaves[i]);
- close_slaves(avf);
- return ret;
-}
-
-static int filter_packet(void *log_ctx, AVPacket *pkt,
- AVFormatContext *fmt_ctx, AVBitStreamFilterContext *bsf_ctx)
-{
- AVCodecContext *enc_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
- int ret = 0;
-
- while (bsf_ctx) {
- AVPacket new_pkt = *pkt;
- ret = av_bitstream_filter_filter(bsf_ctx, enc_ctx, NULL,
- &new_pkt.data, &new_pkt.size,
- pkt->data, pkt->size,
- pkt->flags & AV_PKT_FLAG_KEY);
- if (ret == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
- if ((ret = av_copy_packet(&new_pkt, pkt)) < 0)
- break;
- ret = 1;
- }
-
- if (ret > 0) {
- av_free_packet(pkt);
- new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
- av_buffer_default_free, NULL, 0);
- if (!new_pkt.buf)
- break;
- }
- *pkt = new_pkt;
-
- bsf_ctx = bsf_ctx->next;
- }
-
- if (ret < 0) {
- av_log(log_ctx, AV_LOG_ERROR,
- "Failed to filter bitstream with filter %s for stream %d in file '%s' with codec %s\n",
- bsf_ctx->filter->name, pkt->stream_index, fmt_ctx->filename,
- avcodec_get_name(enc_ctx->codec_id));
- }
-
- return ret;
-}
-
-static int tee_write_trailer(AVFormatContext *avf)
-{
- TeeContext *tee = avf->priv_data;
- AVFormatContext *avf2;
- int ret_all = 0, ret;
- unsigned i;
-
- for (i = 0; i < tee->nb_slaves; i++) {
- avf2 = tee->slaves[i].avf;
- if ((ret = av_write_trailer(avf2)) < 0)
- if (!ret_all)
- ret_all = ret;
- if (!(avf2->oformat->flags & AVFMT_NOFILE)) {
- if ((ret = avio_close(avf2->pb)) < 0)
- if (!ret_all)
- ret_all = ret;
- avf2->pb = NULL;
- }
- }
- close_slaves(avf);
- return ret_all;
-}
-
-static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
-{
- TeeContext *tee = avf->priv_data;
- AVFormatContext *avf2;
- AVPacket pkt2;
- int ret_all = 0, ret;
- unsigned i, s;
- int s2;
- AVRational tb, tb2;
-
- for (i = 0; i < tee->nb_slaves; i++) {
- avf2 = tee->slaves[i].avf;
- s = pkt->stream_index;
- s2 = tee->slaves[i].stream_map[s];
- if (s2 < 0)
- continue;
-
- if ((ret = av_copy_packet(&pkt2, pkt)) < 0 ||
- (ret = av_dup_packet(&pkt2))< 0)
- if (!ret_all) {
- ret = ret_all;
- continue;
- }
- tb = avf ->streams[s ]->time_base;
- tb2 = avf2->streams[s2]->time_base;
- pkt2.pts = av_rescale_q(pkt->pts, tb, tb2);
- pkt2.dts = av_rescale_q(pkt->dts, tb, tb2);
- pkt2.duration = av_rescale_q(pkt->duration, tb, tb2);
- pkt2.stream_index = s2;
-
- filter_packet(avf2, &pkt2, avf2, tee->slaves[i].bsfs[s2]);
- if ((ret = av_interleaved_write_frame(avf2, &pkt2)) < 0)
- if (!ret_all)
- ret_all = ret;
- }
- return ret_all;
-}
-
-AVOutputFormat ff_tee_muxer = {
- .name = "tee",
- .long_name = NULL_IF_CONFIG_SMALL("Multiple muxer tee"),
- .priv_data_size = sizeof(TeeContext),
- .write_header = tee_write_header,
- .write_trailer = tee_write_trailer,
- .write_packet = tee_write_packet,
- .priv_class = &tee_muxer_class,
- .flags = AVFMT_NOFILE,
-};
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