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Patch for the FLV muxer to supply more complete metadata 

in the onMetaData header. Patch by Allan Hsu <allan at counterpop dot net>.

Originally committed as revision 7382 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Allan Hsu 2006-12-28 12:35:22 +00:00 committed by Benjamin Larsson
parent e311363245
commit 148c9bdbb8
3 changed files with 51 additions and 6 deletions
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49
libavformat/flvenc.c
View File

@ -20,10 +20,27 @@
*/
#include "avformat.h"
#include "flv.h"
#include "riff.h"
#undef NDEBUG
#include <assert.h>
static const CodecTag flv_video_codec_ids[] = {
{CODEC_ID_FLV1, FLV_CODECID_H263 },
{CODEC_ID_FLASHSV, FLV_CODECID_SCREEN},
{CODEC_ID_VP6F, FLV_CODECID_VP6 },
{CODEC_ID_NONE, 0}
};
static const CodecTag flv_audio_codec_ids[] = {
{CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_S8, FLV_CODECID_PCM_BE >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_S16BE, FLV_CODECID_PCM_BE >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_NONE, 0}
};
typedef struct FLVContext {
int hasAudio;
int hasVideo;
@ -99,11 +116,16 @@ static void put_amf_double(ByteIOContext *pb, double d)
put_be64(pb, av_dbl2int(d));
}
static void put_amf_bool(ByteIOContext *pb, int b) {
put_byte(pb, AMF_DATA_TYPE_BOOL);
put_byte(pb, !!b);
}
static int flv_write_header(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
FLVContext *flv = s->priv_data;
int i, width, height, samplerate;
int i, width, height, samplerate, samplesize, channels, audiocodecid, videocodecid;
double framerate = 0.0;
int metadata_size_pos, data_size;
@ -121,9 +143,20 @@ static int flv_write_header(AVFormatContext *s)
framerate = 1/av_q2d(s->streams[i]->codec->time_base);
}
flv->hasVideo=1;
videocodecid = codec_get_tag(flv_video_codec_ids, enc->codec_id);
if(videocodecid == 0) {
av_log(enc, AV_LOG_ERROR, "video codec not compatible with flv\n");
return -1;
}
} else {
flv->hasAudio=1;
samplerate = enc->sample_rate;
channels = enc->channels;
audiocodecid = codec_get_tag(flv_audio_codec_ids, enc->codec_id);
samplesize = (enc->codec_id == CODEC_ID_PCM_S8) ? 8 : 16;
if(get_audio_flags(enc)<0)
return -1;
}
@ -162,7 +195,7 @@ static int flv_write_header(AVFormatContext *s)
/* mixed array (hash) with size and string/type/data tuples */
put_byte(pb, AMF_DATA_TYPE_MIXEDARRAY);
put_be32(pb, 4*flv->hasVideo + flv->hasAudio + 2); // +2 for duration and file size
put_be32(pb, 5*flv->hasVideo + 4*flv->hasAudio + 2); // +2 for duration and file size
put_amf_string(pb, "duration");
flv->duration_offset= url_ftell(pb);
@ -180,11 +213,23 @@ static int flv_write_header(AVFormatContext *s)
put_amf_string(pb, "framerate");
put_amf_double(pb, framerate);
put_amf_string(pb, "videocodecid");
put_amf_double(pb, videocodecid);
}
if(flv->hasAudio){
put_amf_string(pb, "audiosamplerate");
put_amf_double(pb, samplerate);
put_amf_string(pb, "audiosamplesize");
put_amf_double(pb, samplesize);
put_amf_string(pb, "stereo");
put_amf_bool(pb, (channels == 2));
put_amf_string(pb, "audiocodecid");
put_amf_double(pb, audiocodecid);
}
put_amf_string(pb, "filesize");

4
tests/ffmpeg.regression.ref
View File

@ -133,8 +133,8 @@ stddev: 20.00 PSNR:22.10 bytes:7602176
1454536 ./data/a-asv2.avi
0b310840a6d3970595983491687669df *./data/out.yuv
stddev: 18.82 PSNR:22.63 bytes:7602176
4478bd22d09ae383b5cff05100437727 *./data/a-flv.flv
649017 ./data/a-flv.flv
cbdb25fe5bb6a895baf9799b8ccb3038 *./data/a-flv.flv
649040 ./data/a-flv.flv
40281942d6ee254f7d3027b8593b19be *./data/out.yuv
stddev: 8.06 PSNR:29.99 bytes:7602176
f8f51fa737add17f7fecaefa118b57ed *./data/a-ffv1.avi

4
tests/rotozoom.regression.ref
View File

@ -133,8 +133,8 @@ stddev: 10.47 PSNR:27.72 bytes:7602176
789072 ./data/a-asv2.avi
74a78015b64b2cf8cb9da2e44f508a69 *./data/out.yuv
stddev: 10.28 PSNR:27.88 bytes:7602176
bd76377d9e167caff10ebaf381f01a82 *./data/a-flv.flv
131337 ./data/a-flv.flv
7163b470e93feb36b3f01e82168a3d31 *./data/a-flv.flv
131360 ./data/a-flv.flv
8999c8264fb0941561f64c4a736e9d88 *./data/out.yuv
stddev: 5.33 PSNR:33.58 bytes:7602176
d72b0960e162d4998b9acbabb07e99ab *./data/a-ffv1.avi