* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
+#include "flv.h"
+#include "riff.h"
#undef NDEBUG
#include <assert.h>
+static const AVCodecTag flv_video_codec_ids[] = {
+ {CODEC_ID_FLV1, FLV_CODECID_H263 },
+ {CODEC_ID_FLASHSV, FLV_CODECID_SCREEN},
+ {CODEC_ID_VP6F, FLV_CODECID_VP6 },
+ {CODEC_ID_VP6, FLV_CODECID_VP6 },
+ {CODEC_ID_NONE, 0}
+};
+
+static const AVCodecTag 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;
} FLVContext;
static int get_audio_flags(AVCodecContext *enc){
- int flags = (enc->bits_per_sample == 16) ? 0x2 : 0x0;
+ int flags = (enc->bits_per_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
switch (enc->sample_rate) {
case 44100:
- flags |= 0x0C;
+ flags |= FLV_SAMPLERATE_44100HZ;
break;
case 22050:
- flags |= 0x08;
+ flags |= FLV_SAMPLERATE_22050HZ;
break;
case 11025:
- flags |= 0x04;
+ flags |= FLV_SAMPLERATE_11025HZ;
break;
case 8000: //nellymoser only
case 5512: //not mp3
- flags |= 0x00;
+ flags |= FLV_SAMPLERATE_SPECIAL;
break;
default:
av_log(enc, AV_LOG_ERROR, "flv doesnt support that sample rate, choose from (44100, 22050, 11025)\n");
}
if (enc->channels > 1) {
- flags |= 0x01;
+ flags |= FLV_STEREO;
}
switch(enc->codec_id){
case CODEC_ID_MP3:
- flags |= 0x20 | 0x2;
+ flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
break;
case CODEC_ID_PCM_S8:
+ flags |= FLV_CODECID_PCM_BE | FLV_SAMPLESSIZE_8BIT;
break;
case CODEC_ID_PCM_S16BE:
- flags |= 0x60 | 0x2;
+ flags |= FLV_CODECID_PCM_BE | FLV_SAMPLESSIZE_16BIT;
break;
case CODEC_ID_PCM_S16LE:
- flags |= 0x2;
+ flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT;
break;
case CODEC_ID_ADPCM_SWF:
- flags |= 0x10;
+ flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
break;
case 0:
flags |= enc->codec_tag<<4;
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);
static void put_amf_double(ByteIOContext *pb, double d)
{
- put_byte(pb, AMF_DOUBLE);
+ put_byte(pb, AMF_DATA_TYPE_NUMBER);
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;
flv->hasAudio = 0;
flv->hasVideo = 0;
- put_tag(pb,"FLV");
- put_byte(pb,1);
- put_byte(pb,0); // delayed write
- put_be32(pb,9);
- put_be32(pb,0);
-
for(i=0; i<s->nb_streams; i++){
AVCodecContext *enc = s->streams[i]->codec;
if (enc->codec_type == CODEC_TYPE_VIDEO) {
framerate = 1/av_q2d(s->streams[i]->codec->time_base);
}
flv->hasVideo=1;
+
+ videocodecid = enc->codec_tag;
+ 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 = enc->codec_tag;
+ samplesize = (enc->codec_id == CODEC_ID_PCM_S8) ? 8 : 16;
+
+ if(get_audio_flags(enc)<0)
+ return -1;
}
av_set_pts_info(s->streams[i], 24, 1, 1000); /* 24 bit pts in ms */
- if(enc->codec_tag == 5){
+ }
+ put_tag(pb,"FLV");
+ put_byte(pb,1);
+ put_byte(pb, FLV_HEADER_FLAG_HASAUDIO * flv->hasAudio
+ + FLV_HEADER_FLAG_HASVIDEO * flv->hasVideo);
+ put_be32(pb,9);
+ put_be32(pb,0);
+
+ for(i=0; i<s->nb_streams; i++){
+ if(s->streams[i]->codec->codec_tag == 5){
put_byte(pb,8); // message type
put_be24(pb,0); // include flags
put_be24(pb,0); // time stamp
put_be32(pb,11); // size
flv->reserved=5;
}
- if(enc->codec_type == CODEC_TYPE_AUDIO && get_audio_flags(enc)<0)
- return -1;
}
/* write meta_tag */
/* now data of data_size size */
/* first event name as a string */
- put_byte(pb, AMF_STRING); // 1 byte
+ put_byte(pb, AMF_DATA_TYPE_STRING);
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 + 2); // +2 for duration and file size
+ put_byte(pb, AMF_DATA_TYPE_MIXEDARRAY);
+ 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);
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");
put_amf_double(pb, 0); // delayed write
put_amf_string(pb, "");
- put_byte(pb, 9); // end marker 1 byte
+ put_byte(pb, AMF_END_OF_OBJECT);
/* write total size of tag */
data_size= url_ftell(pb) - metadata_size_pos - 10;
static int flv_write_trailer(AVFormatContext *s)
{
int64_t file_size;
- int flags = 0;
ByteIOContext *pb = &s->pb;
FLVContext *flv = s->priv_data;
file_size = url_ftell(pb);
- flags |= flv->hasAudio ? 4 : 0;
- flags |= flv->hasVideo ? 1 : 0;
- url_fseek(pb, 4, SEEK_SET);
- put_byte(pb,flags);
/* update informations */
url_fseek(pb, flv->duration_offset, SEEK_SET);
int size= pkt->size;
int flags;
-// av_log(s, AV_LOG_DEBUG, "type:%d pts: %lld size:%d\n", enc->codec_type, timestamp, size);
+// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
if (enc->codec_type == CODEC_TYPE_VIDEO) {
- put_byte(pb, 9);
- flags = 2; // choose h263
- flags |= pkt->flags & PKT_FLAG_KEY ? 0x10 : 0x20; // add keyframe indicator
+ put_byte(pb, FLV_TAG_TYPE_VIDEO);
+
+ flags = enc->codec_tag;
+ if(flags == 0) {
+ av_log(enc, AV_LOG_ERROR, "video codec %X not compatible with flv\n",enc->codec_id);
+ return -1;
+ }
+
+ flags |= pkt->flags & PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER;
} else {
assert(enc->codec_type == CODEC_TYPE_AUDIO);
flags = get_audio_flags(enc);
assert(size);
- put_byte(pb, 8);
+ put_byte(pb, FLV_TAG_TYPE_AUDIO);
}
- put_be24(pb,size+1); // include flags
+ if ((enc->codec_id == CODEC_ID_VP6) || (enc->codec_id == CODEC_ID_VP6F))
+ put_be24(pb,size+2); // include the extra byte needed for VP6 in flv and flags
+ else
+ put_be24(pb,size+1); // include flags
put_be24(pb,pkt->pts);
put_be32(pb,flv->reserved);
put_byte(pb,flags);
+ if (enc->codec_id == CODEC_ID_VP6)
+ put_byte(pb,0);
+ if (enc->codec_id == CODEC_ID_VP6F)
+ put_byte(pb, enc->extradata_size ? enc->extradata[0] : 0);
put_buffer(pb, pkt->data, size);
put_be32(pb,size+1+11); // previous tag size
flv->duration = pkt->pts + pkt->duration;
"video/x-flv",
"flv",
sizeof(FLVContext),
-#ifdef CONFIG_MP3LAME
+#ifdef CONFIG_LIBMP3LAME
CODEC_ID_MP3,
-#else // CONFIG_MP3LAME
+#else // CONFIG_LIBMP3LAME
CODEC_ID_NONE,
-#endif // CONFIG_MP3LAME
+#endif // CONFIG_LIBMP3LAME
CODEC_ID_FLV1,
flv_write_header,
flv_write_packet,
flv_write_trailer,
+ .codec_tag= (const AVCodecTag*[]){flv_video_codec_ids, flv_audio_codec_ids, 0},
};
projects / ffmpeg / blobdiff