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Diffstat (limited to 'ffmpeg1/libavformat/img2dec.c')
-rw-r--r--ffmpeg1/libavformat/img2dec.c498
1 files changed, 498 insertions, 0 deletions
diff --git a/ffmpeg1/libavformat/img2dec.c b/ffmpeg1/libavformat/img2dec.c
new file mode 100644
index 0000000..882abb9
--- /dev/null
+++ b/ffmpeg1/libavformat/img2dec.c
@@ -0,0 +1,498 @@
+/*
+ * Image format
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2004 Michael Niedermayer
+ *
+ * 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/avstring.h"
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/parseutils.h"
+#include "avformat.h"
+#include "internal.h"
+#if HAVE_GLOB
+#include <glob.h>
+
+/* Locally define as 0 (bitwise-OR no-op) any missing glob options that
+ are non-posix glibc/bsd extensions. */
+#ifndef GLOB_NOMAGIC
+#define GLOB_NOMAGIC 0
+#endif
+#ifndef GLOB_BRACE
+#define GLOB_BRACE 0
+#endif
+
+#endif /* HAVE_GLOB */
+
+typedef struct {
+ const AVClass *class; /**< Class for private options. */
+ int img_first;
+ int img_last;
+ int img_number;
+ int64_t pts;
+ int img_count;
+ int is_pipe;
+ int split_planes; /**< use independent file for each Y, U, V plane */
+ char path[1024];
+ char *pixel_format; /**< Set by a private option. */
+ char *video_size; /**< Set by a private option. */
+ char *framerate; /**< Set by a private option. */
+ int loop;
+ enum { PT_GLOB_SEQUENCE, PT_GLOB, PT_SEQUENCE } pattern_type;
+ int use_glob;
+#if HAVE_GLOB
+ glob_t globstate;
+#endif
+ int start_number;
+ int start_number_range;
+ int frame_size;
+} VideoDemuxData;
+
+static const int sizes[][2] = {
+ { 640, 480 },
+ { 720, 480 },
+ { 720, 576 },
+ { 352, 288 },
+ { 352, 240 },
+ { 160, 128 },
+ { 512, 384 },
+ { 640, 352 },
+ { 640, 240 },
+};
+
+static int infer_size(int *width_ptr, int *height_ptr, int size)
+{
+ int i;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
+ if ((sizes[i][0] * sizes[i][1]) == size) {
+ *width_ptr = sizes[i][0];
+ *height_ptr = sizes[i][1];
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+static int is_glob(const char *path)
+{
+#if HAVE_GLOB
+ size_t span = 0;
+ const char *p = path;
+
+ while (p = strchr(p, '%')) {
+ if (*(++p) == '%') {
+ ++p;
+ continue;
+ }
+ if (span = strspn(p, "*?[]{}"))
+ break;
+ }
+ /* Did we hit a glob char or get to the end? */
+ return span != 0;
+#else
+ return 0;
+#endif
+}
+
+/**
+ * Get index range of image files matched by path.
+ *
+ * @param pfirst_index pointer to index updated with the first number in the range
+ * @param plast_index pointer to index updated with the last number in the range
+ * @param path path which has to be matched by the image files in the range
+ * @param start_index minimum accepted value for the first index in the range
+ * @return -1 if no image file could be found
+ */
+static int find_image_range(int *pfirst_index, int *plast_index,
+ const char *path, int start_index, int start_index_range)
+{
+ char buf[1024];
+ int range, last_index, range1, first_index;
+
+ /* find the first image */
+ for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
+ if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
+ *pfirst_index =
+ *plast_index = 1;
+ if (avio_check(buf, AVIO_FLAG_READ) > 0)
+ return 0;
+ return -1;
+ }
+ if (avio_check(buf, AVIO_FLAG_READ) > 0)
+ break;
+ }
+ if (first_index == start_index + start_index_range)
+ goto fail;
+
+ /* find the last image */
+ last_index = first_index;
+ for (;;) {
+ range = 0;
+ for (;;) {
+ if (!range)
+ range1 = 1;
+ else
+ range1 = 2 * range;
+ if (av_get_frame_filename(buf, sizeof(buf), path,
+ last_index + range1) < 0)
+ goto fail;
+ if (avio_check(buf, AVIO_FLAG_READ) <= 0)
+ break;
+ range = range1;
+ /* just in case... */
+ if (range >= (1 << 30))
+ goto fail;
+ }
+ /* we are sure than image last_index + range exists */
+ if (!range)
+ break;
+ last_index += range;
+ }
+ *pfirst_index = first_index;
+ *plast_index = last_index;
+ return 0;
+
+fail:
+ return -1;
+}
+
+static int img_read_probe(AVProbeData *p)
+{
+ if (p->filename && ff_guess_image2_codec(p->filename)) {
+ if (av_filename_number_test(p->filename))
+ return AVPROBE_SCORE_MAX;
+ else if (is_glob(p->filename))
+ return AVPROBE_SCORE_MAX;
+ else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
+ return 5;
+ else
+ return AVPROBE_SCORE_MAX / 2;
+ }
+ return 0;
+}
+
+static int img_read_header(AVFormatContext *s1)
+{
+ VideoDemuxData *s = s1->priv_data;
+ int first_index, last_index, ret = 0;
+ int width = 0, height = 0;
+ AVStream *st;
+ enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
+ AVRational framerate;
+
+ s1->ctx_flags |= AVFMTCTX_NOHEADER;
+
+ st = avformat_new_stream(s1, NULL);
+ if (!st) {
+ return AVERROR(ENOMEM);
+ }
+
+ if (s->pixel_format &&
+ (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
+ av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
+ s->pixel_format);
+ return AVERROR(EINVAL);
+ }
+ if (s->video_size &&
+ (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
+ av_log(s, AV_LOG_ERROR,
+ "Could not parse video size: %s.\n", s->video_size);
+ return ret;
+ }
+ if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
+ av_log(s, AV_LOG_ERROR,
+ "Could not parse framerate: %s.\n", s->framerate);
+ return ret;
+ }
+
+ av_strlcpy(s->path, s1->filename, sizeof(s->path));
+ s->img_number = 0;
+ s->img_count = 0;
+
+ /* find format */
+ if (s1->iformat->flags & AVFMT_NOFILE)
+ s->is_pipe = 0;
+ else {
+ s->is_pipe = 1;
+ st->need_parsing = AVSTREAM_PARSE_FULL;
+ }
+
+ avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
+
+ if (width && height) {
+ st->codec->width = width;
+ st->codec->height = height;
+ }
+
+ if (!s->is_pipe) {
+ if (s->pattern_type == PT_GLOB_SEQUENCE) {
+ s->use_glob = is_glob(s->path);
+ if (s->use_glob) {
+ char *p = s->path, *q, *dup;
+ int gerr;
+
+ av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
+ "use pattern_type 'glob' instead\n");
+#if HAVE_GLOB
+ dup = q = av_strdup(p);
+ while (*q) {
+ /* Do we have room for the next char and a \ insertion? */
+ if ((p - s->path) >= (sizeof(s->path) - 2))
+ break;
+ if (*q == '%' && strspn(q + 1, "%*?[]{}"))
+ ++q;
+ else if (strspn(q, "\\*?[]{}"))
+ *p++ = '\\';
+ *p++ = *q++;
+ }
+ *p = 0;
+ av_free(dup);
+
+ gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
+ if (gerr != 0) {
+ return AVERROR(ENOENT);
+ }
+ first_index = 0;
+ last_index = s->globstate.gl_pathc - 1;
+#endif
+ }
+ }
+ if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
+ if (find_image_range(&first_index, &last_index, s->path,
+ s->start_number, s->start_number_range) < 0) {
+ av_log(s1, AV_LOG_ERROR,
+ "Could find no file with with path '%s' and index in the range %d-%d\n",
+ s->path, s->start_number, s->start_number + s->start_number_range - 1);
+ return AVERROR(ENOENT);
+ }
+ } else if (s->pattern_type == PT_GLOB) {
+#if HAVE_GLOB
+ int gerr;
+ gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
+ if (gerr != 0) {
+ return AVERROR(ENOENT);
+ }
+ first_index = 0;
+ last_index = s->globstate.gl_pathc - 1;
+ s->use_glob = 1;
+#else
+ av_log(s1, AV_LOG_ERROR,
+ "Pattern type 'glob' was selected but globbing "
+ "is not supported by this libavformat build\n");
+ return AVERROR(ENOSYS);
+#endif
+ } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
+ av_log(s1, AV_LOG_ERROR,
+ "Unknown value '%d' for pattern_type option\n", s->pattern_type);
+ return AVERROR(EINVAL);
+ }
+ s->img_first = first_index;
+ s->img_last = last_index;
+ s->img_number = first_index;
+ /* compute duration */
+ st->start_time = 0;
+ st->duration = last_index - first_index + 1;
+ }
+
+ if (s1->video_codec_id) {
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = s1->video_codec_id;
+ } else if (s1->audio_codec_id) {
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codec->codec_id = s1->audio_codec_id;
+ } else {
+ const char *str = strrchr(s->path, '.');
+ s->split_planes = str && !av_strcasecmp(str + 1, "y");
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = ff_guess_image2_codec(s->path);
+ if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
+ st->codec->codec_id = AV_CODEC_ID_MJPEG;
+ }
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
+ pix_fmt != AV_PIX_FMT_NONE)
+ st->codec->pix_fmt = pix_fmt;
+
+ return 0;
+}
+
+static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+ VideoDemuxData *s = s1->priv_data;
+ char filename_bytes[1024];
+ char *filename = filename_bytes;
+ int i;
+ int size[3] = { 0 }, ret[3] = { 0 };
+ AVIOContext *f[3] = { NULL };
+ AVCodecContext *codec = s1->streams[0]->codec;
+
+ if (!s->is_pipe) {
+ /* loop over input */
+ if (s->loop && s->img_number > s->img_last) {
+ s->img_number = s->img_first;
+ }
+ if (s->img_number > s->img_last)
+ return AVERROR_EOF;
+ if (s->use_glob) {
+#if HAVE_GLOB
+ filename = s->globstate.gl_pathv[s->img_number];
+#endif
+ } else {
+ if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
+ s->path,
+ s->img_number) < 0 && s->img_number > 1)
+ return AVERROR(EIO);
+ }
+ for (i = 0; i < 3; i++) {
+ if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
+ &s1->interrupt_callback, NULL) < 0) {
+ if (i >= 1)
+ break;
+ av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
+ filename);
+ return AVERROR(EIO);
+ }
+ size[i] = avio_size(f[i]);
+
+ if (!s->split_planes)
+ break;
+ filename[strlen(filename) - 1] = 'U' + i;
+ }
+
+ if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
+ infer_size(&codec->width, &codec->height, size[0]);
+ } else {
+ f[0] = s1->pb;
+ if (url_feof(f[0]))
+ return AVERROR(EIO);
+ if (s->frame_size > 0) {
+ size[0] = s->frame_size;
+ } else {
+ size[0] = 4096;
+ }
+ }
+
+ if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
+ return AVERROR(ENOMEM);
+ pkt->stream_index = 0;
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ if (!s->is_pipe)
+ pkt->pts = s->pts;
+
+ pkt->size = 0;
+ for (i = 0; i < 3; i++) {
+ if (f[i]) {
+ ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
+ if (!s->is_pipe)
+ avio_close(f[i]);
+ if (ret[i] > 0)
+ pkt->size += ret[i];
+ }
+ }
+
+ if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
+ av_free_packet(pkt);
+ return AVERROR(EIO); /* signal EOF */
+ } else {
+ s->img_count++;
+ s->img_number++;
+ s->pts++;
+ return 0;
+ }
+}
+
+static int img_read_close(struct AVFormatContext* s1)
+{
+ VideoDemuxData *s = s1->priv_data;
+#if HAVE_GLOB
+ if (s->use_glob) {
+ globfree(&s->globstate);
+ }
+#endif
+ return 0;
+}
+
+static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+{
+ VideoDemuxData *s1 = s->priv_data;
+
+ if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
+ return -1;
+ s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
+ s1->pts = timestamp;
+ return 0;
+}
+
+#define OFFSET(x) offsetof(VideoDemuxData, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+ { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
+ { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
+
+ { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
+ { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
+ { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
+ { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
+
+ { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
+ { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
+ { "start_number_range", "set range for looking at the first sequence number", OFFSET(start_number_range), AV_OPT_TYPE_INT, {.i64 = 5}, 1, INT_MAX, DEC },
+ { "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
+ { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
+ { NULL },
+};
+
+#if CONFIG_IMAGE2_DEMUXER
+static const AVClass img2_class = {
+ .class_name = "image2 demuxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+AVInputFormat ff_image2_demuxer = {
+ .name = "image2",
+ .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
+ .priv_data_size = sizeof(VideoDemuxData),
+ .read_probe = img_read_probe,
+ .read_header = img_read_header,
+ .read_packet = img_read_packet,
+ .read_close = img_read_close,
+ .read_seek = img_read_seek,
+ .flags = AVFMT_NOFILE,
+ .priv_class = &img2_class,
+};
+#endif
+#if CONFIG_IMAGE2PIPE_DEMUXER
+static const AVClass img2pipe_class = {
+ .class_name = "image2pipe demuxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+AVInputFormat ff_image2pipe_demuxer = {
+ .name = "image2pipe",
+ .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
+ .priv_data_size = sizeof(VideoDemuxData),
+ .read_header = img_read_header,
+ .read_packet = img_read_packet,
+ .priv_class = &img2pipe_class,
+};
+#endif
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