[FFmpeg-cvslog] flvdec: optionally trust the metadata
Luca Barbato
git at videolan.org
Thu Jul 5 21:58:37 CEST 2012
ffmpeg | branch: master | Luca Barbato <lu_zero at gentoo.org> | Wed Jul 4 13:33:41 2012 +0200| [5b54a90c8b54e3db862ec3bb3a28b0b9e4fc6554] | committer: Luca Barbato
flvdec: optionally trust the metadata
In certain conditions video or audio frames might appear way later in the
stream.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5b54a90c8b54e3db862ec3bb3a28b0b9e4fc6554
---
libavformat/flvdec.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 093cd0a..602cb9e 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -26,6 +26,7 @@
#include "libavutil/avstring.h"
#include "libavutil/dict.h"
+#include "libavutil/opt.h"
#include "libavutil/intfloat.h"
#include "libavutil/mathematics.h"
#include "libavcodec/bytestream.h"
@@ -42,6 +43,8 @@
#define VALIDATE_INDEX_TS_THRESH 2500
typedef struct {
+ const AVClass *class; ///< Class for private options.
+ int trust_metadata; ///< configure streams according onMetaData
int wrong_dts; ///< wrong dts due to negative cts
uint8_t *new_extradata[2];
int new_extradata_size[2];
@@ -327,6 +330,7 @@ finish:
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) {
AVCodecContext *acodec, *vcodec;
+ FLVContext *flv = s->priv_data;
AVIOContext *ioc;
AMFDataType amf_type;
char str_val[256];
@@ -406,6 +410,22 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_id = CODEC_ID_TEXT;
+ } else if (flv->trust_metadata) {
+ if (!strcmp(key, "videocodecid") && vcodec) {
+ flv_set_video_codec(s, vstream, num_val);
+ } else
+ if (!strcmp(key, "audiocodecid") && acodec) {
+ flv_set_audio_codec(s, astream, acodec, num_val);
+ } else
+ if (!strcmp(key, "audiosamplerate") && acodec) {
+ acodec->sample_rate = num_val;
+ } else
+ if (!strcmp(key, "width") && vcodec) {
+ vcodec->width = num_val;
+ } else
+ if (!strcmp(key, "height") && vcodec) {
+ vcodec->height = num_val;
+ }
}
}
@@ -844,6 +864,20 @@ static int flv_read_seek(AVFormatContext *s, int stream_index,
return avio_seek_time(s->pb, stream_index, ts, flags);
}
+#define OFFSET(x) offsetof(FLVContext, x)
+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+ { "flv_metadata", "Allocate streams according the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD},
+ { NULL }
+};
+
+static const AVClass class = {
+ .class_name = "flvdec",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
AVInputFormat ff_flv_demuxer = {
.name = "flv",
.long_name = NULL_IF_CONFIG_SMALL("FLV format"),
@@ -854,4 +888,5 @@ AVInputFormat ff_flv_demuxer = {
.read_seek = flv_read_seek,
.read_close = flv_read_close,
.extensions = "flv",
+ .priv_class = &class,
};
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