virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

add header info to flv format based on a patch by (Philipp Klaus >ffmpegdevel ad pylonsoft mot ch )

Browse Source 
Originally committed as revision 5779 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-07-17 21:51:21 +00:00
parent efea852877
commit fd0fb3064d
4 changed files with 99 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

98
libavformat/flvenc.c
View File

@ -79,11 +79,34 @@ static int get_audio_flags(AVCodecContext *enc){
return flags;
}
#define AMF_DOUBLE 0
#define AMF_BOOLEAN 1
#define AMF_STRING 2
#define AMF_OBJECT 3
#define AMF_MIXED_ARRAY 8
#define AMF_ARRAY 10
#define AMF_DATE 11
static void put_amf_string(ByteIOContext *pb, const char *str)
{
size_t len = strlen(str);
put_be16(pb, len);
put_buffer(pb, str, len);
}
static void put_amf_double(ByteIOContext *pb, double d)
{
put_byte(pb, AMF_DOUBLE);
put_be64(pb, av_dbl2int(d));
}
static int flv_write_header(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
FLVContext *flv = s->priv_data;
int i;
int i, width, height, samplerate;
double framerate = 0.0;
int metadata_size_pos, data_size;
flv->hasAudio = 0;
flv->hasVideo = 0;
@ -96,6 +119,19 @@ static int flv_write_header(AVFormatContext *s)
for(i=0; i<s->nb_streams; i++){
AVCodecContext *enc = s->streams[i]->codec;
if (enc->codec_type == CODEC_TYPE_VIDEO) {
width = enc->width;
height = enc->height;
if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) {
framerate = av_q2d(s->streams[i]->r_frame_rate);
} else {
framerate = 1/av_q2d(s->streams[i]->codec->time_base);
}
flv->hasVideo=1;
} else {
flv->hasAudio=1;
samplerate = enc->sample_rate;
}
av_set_pts_info(s->streams[i], 24, 1, 1000); /* 24 bit pts in ms */
if(enc->codec_tag == 5){
put_byte(pb,8); // message type
@ -109,6 +145,62 @@ static int flv_write_header(AVFormatContext *s)
return -1;
}
/* write meta_tag */
put_byte(pb, 18); // tag type META
metadata_size_pos= url_ftell(pb);
put_be24(pb, 0); // size of data part (sum of all parts below)
put_be24(pb, 0); // time stamp
put_be32(pb, 0); // reserved
/* now data of data_size size */
/* first event name as a string */
put_byte(pb, AMF_STRING); // 1 byte
put_amf_string(pb, "onMetaData"); // 12 bytes
/* mixed array (hash) with size and string/type/data tuples */
put_byte(pb, AMF_MIXED_ARRAY);
put_be32(pb, 4*flv->hasVideo + flv->hasAudio + (!!s->file_size) + (s->duration != AV_NOPTS_VALUE && s->duration));
if (s->duration != AV_NOPTS_VALUE && s->duration) {
put_amf_string(pb, "duration");
put_amf_double(pb, s->duration / (double)AV_TIME_BASE);
}
if(flv->hasVideo){
put_amf_string(pb, "width");
put_amf_double(pb, width);
put_amf_string(pb, "height");
put_amf_double(pb, height);
put_amf_string(pb, "videodatarate");
put_amf_double(pb, s->bit_rate / 1024.0);
put_amf_string(pb, "framerate");
put_amf_double(pb, framerate);
}
if(flv->hasAudio){
put_amf_string(pb, "audiosamplerate");
put_amf_double(pb, samplerate);
}
if(s->file_size){
put_amf_string(pb, "filesize");
put_amf_double(pb, s->file_size);
}
put_amf_string(pb, "");
put_byte(pb, 9); // end marker 1 byte
/* write total size of tag */
data_size= url_ftell(pb) - metadata_size_pos - 10;
url_fseek(pb, metadata_size_pos, SEEK_SET);
put_be24(pb, data_size);
url_fseek(pb, data_size + 10 - 3, SEEK_CUR);
put_be32(pb, data_size + 11);
return 0;
}
@ -143,7 +235,6 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
put_byte(pb, 9);
flags = 2; // choose h263
flags |= pkt->flags & PKT_FLAG_KEY ? 0x10 : 0x20; // add keyframe indicator
flv->hasVideo = 1;
} else {
assert(enc->codec_type == CODEC_TYPE_AUDIO);
flags = get_audio_flags(enc);
@ -151,9 +242,6 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
assert(size);
put_byte(pb, 8);
// We got audio! Make sure we set this to the global flags on closure
flv->hasAudio = 1;
}
put_be24(pb,size+1); // include flags

4
tests/ffmpeg.regression.ref
View File

@ -125,8 +125,8 @@ stddev: 20.00 PSNR:22.10 bytes:7602176
1453500 ./data/a-asv2.avi
0b310840a6d3970595983491687669df *./data/out.yuv
stddev: 18.82 PSNR:22.63 bytes:7602176
de42cb5a15bfa8e70cf60edda0b32355 *./data/a-flv.flv
657991 ./data/a-flv.flv
2e1647c88d1b7e56d91058484db602da *./data/a-flv.flv
658104 ./data/a-flv.flv
4d9c04e7017dc68da7891048c46c1c37 *./data/out.yuv
stddev: 8.08 PSNR:29.97 bytes:7602176
a7ef4746f27be309138c188e327d3ebe *./data/a-ffv1.avi

4
tests/libav.regression.ref
View File

@ -19,8 +19,8 @@ ffmpeg regression test
0026c4e2528ff8f71b79ef53d38cc04d *./data/b-libav.ffm
389120 ./data/b-libav.ffm
./data/b-libav.ffm CRC=0x688bd1eb
794934a02582f8dfc85d1856514cf37c *./data/b-libav.flv
339325 ./data/b-libav.flv
eb8ff480628c444be572045ef7208528 *./data/b-libav.flv
339438 ./data/b-libav.flv
./data/b-libav.flv CRC=0x7b9076f8
63e05396e2d52135c4025ce14eb090a9 *./data/b-libav.mov
369893 ./data/b-libav.mov

4
tests/rotozoom.regression.ref
View File

@ -125,8 +125,8 @@ f41877971145f58fae85c613ec570d66 *./data/a-asv2.avi
788036 ./data/a-asv2.avi
74a78015b64b2cf8cb9da2e44f508a69 *./data/out.yuv
stddev: 10.28 PSNR:27.88 bytes:7602176
d847c144e7b72027531047ea4c441cbf *./data/a-flv.flv
131771 ./data/a-flv.flv
ae1a6e011fa1ae015cb16a925de4bcfa *./data/a-flv.flv
131884 ./data/a-flv.flv
e61cd1e7c5a292d396ae90f4d2fb3db7 *./data/out.yuv
stddev: 5.33 PSNR:33.57 bytes:7602176
d0831a8339491fd680b650f05262e5d9 *./data/a-ffv1.avi