/*
- * FLV encoder.
+ * FLV muxer
* Copyright (c) 2003 The FFmpeg Project.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * 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>
-#define VIDEO_FIFO_SIZE 512
+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}
+};
-typedef struct FLVFrame {
- int type;
- int timestamp;
- int reserved;
- int flags;
- uint8_t *data;
- int size;
- struct FLVFrame *next;
-} FLVFrame;
+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;
- int initDelay;
- int64_t sampleCount;
- int64_t frameCount;
int reserved;
- FLVFrame *frames;
+ offset_t duration_offset;
+ offset_t filesize_offset;
+ int64_t duration;
} FLVContext;
-#ifdef CONFIG_MP3LAME
-
-static const int sSampleRates[3][4] = {
- {44100, 48000, 32000, 0},
- {22050, 24000, 16000, 0},
- {11025, 12000, 8000, 0},
-};
-
-static const int sBitRates[2][3][15] = {
- { { 0, 32, 64, 96,128,160,192,224,256,288,320,352,384,416,448},
- { 0, 32, 48, 56, 64, 80, 96,112,128,160,192,224,256,320,384},
- { 0, 32, 40, 48, 56, 64, 80, 96,112,128,160,192,224,256,320}
- },
- { { 0, 32, 48, 56, 64, 80, 96,112,128,144,160,176,192,224,256},
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96,112,128,144,160},
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96,112,128,144,160}
- },
-};
-
-static const int sSamplesPerFrame[3][3] =
-{
- { 384, 1152, 1152 },
- { 384, 1152, 576 },
- { 384, 1152, 576 }
-};
+static int get_audio_flags(AVCodecContext *enc){
+ int flags = (enc->bits_per_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
-static const int sBitsPerSlot[3] = {
- 32,
- 8,
- 8
-};
+ switch (enc->sample_rate) {
+ case 44100:
+ flags |= FLV_SAMPLERATE_44100HZ;
+ break;
+ case 22050:
+ flags |= FLV_SAMPLERATE_22050HZ;
+ break;
+ case 11025:
+ flags |= FLV_SAMPLERATE_11025HZ;
+ break;
+ case 8000: //nellymoser only
+ case 5512: //not mp3
+ flags |= FLV_SAMPLERATE_SPECIAL;
+ break;
+ default:
+ av_log(enc, AV_LOG_ERROR, "flv doesnt support that sample rate, choose from (44100, 22050, 11025)\n");
+ return -1;
+ }
-static int mp3info(void *data, int *byteSize, int *samplesPerFrame, int *sampleRate, int *isMono )
-{
- uint8_t *dataTmp = (uint8_t *)data;
- uint32_t header = ( (uint32_t)dataTmp[0] << 24 ) | ( (uint32_t)dataTmp[1] << 16 ) | ( (uint32_t)dataTmp[2] << 8 ) | (uint32_t)dataTmp[3];
- int layerID = 3 - ((header >> 17) & 0x03);
- int bitRateID = ((header >> 12) & 0x0f);
- int sampleRateID = ((header >> 10) & 0x03);
- int bitRate = 0;
- int bitsPerSlot = sBitsPerSlot[layerID];
- int isPadded = ((header >> 9) & 0x01);
-
- if ( (( header >> 21 ) & 0x7ff) != 0x7ff ) {
- return 0;
+ if (enc->channels > 1) {
+ flags |= FLV_STEREO;
}
- if ( !isPadded ) {
-// printf("Fatal error: mp3 data is not padded!\n");
-// exit(0);
+ switch(enc->codec_id){
+ case CODEC_ID_MP3:
+ 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 |= FLV_CODECID_PCM_BE | FLV_SAMPLESSIZE_16BIT;
+ break;
+ case CODEC_ID_PCM_S16LE:
+ flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT;
+ break;
+ case CODEC_ID_ADPCM_SWF:
+ flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
+ break;
+ case 0:
+ flags |= enc->codec_tag<<4;
+ break;
+ default:
+ av_log(enc, AV_LOG_ERROR, "codec not compatible with flv\n");
+ return -1;
}
- *isMono = ((header >> 6) & 0x03) == 0x03;
+ return flags;
+}
- if ( (header >> 19 ) & 0x01 ) {
- //MPEG1
- *sampleRate = sSampleRates[0][sampleRateID];
- bitRate = sBitRates[0][layerID][bitRateID] * 1000;
- *samplesPerFrame = sSamplesPerFrame[0][layerID];
- } else {
- if ( (header >> 20) & 0x01 ) {
- //MPEG2
- *sampleRate = sSampleRates[1][sampleRateID];
- bitRate = sBitRates[1][layerID][bitRateID] * 1000;
- *samplesPerFrame = sSamplesPerFrame[1][layerID];
- } else {
- //MPEG2.5
- *sampleRate = sSampleRates[2][sampleRateID];
- bitRate = sBitRates[1][layerID][bitRateID] * 1000;
- *samplesPerFrame = sSamplesPerFrame[2][layerID];
- }
- }
-
- *byteSize = ( ( ( ( *samplesPerFrame * (bitRate / bitsPerSlot) ) / *sampleRate ) + isPadded ) );
- return 1;
+static void put_amf_string(ByteIOContext *pb, const char *str)
+{
+ size_t len = strlen(str);
+ put_be16(pb, len);
+ put_buffer(pb, str, len);
}
-#endif // CONFIG_MP3LAME
-static void put_be24(ByteIOContext *pb, int value)
+static void put_amf_double(ByteIOContext *pb, double d)
{
- put_byte(pb, (value>>16) & 0xFF );
- put_byte(pb, (value>> 8) & 0xFF );
- put_byte(pb, (value>> 0) & 0xFF );
+ 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;
+ 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;
- flv->initDelay = -1;
+ 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;
- flv->frames = 0;
+ 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 */
+ }
put_tag(pb,"FLV");
put_byte(pb,1);
- put_byte(pb,0); // delayed write
+ 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++){
- AVCodecContext *enc = &s->streams[i]->codec;
- av_set_pts_info(s->streams[i], 24, 1, 1000); /* 24 bit pts in ms */
- if(enc->codec_tag == 5){
+ 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
}
}
- return 0;
-}
+ /* 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
-static void InsertSorted(FLVContext *flv, FLVFrame *frame)
-{
- if ( !flv->frames ) {
- flv->frames = frame;
- } else {
- FLVFrame *trav = flv->frames;
- FLVFrame *prev = 0;
- for (;trav;) {
- if ( trav->timestamp > frame->timestamp) {
- frame->next = trav;
- if ( prev ) {
- prev->next = frame;
- } else {
- flv->frames = frame;
- }
- break;
- }
- prev = trav;
- trav = trav->next;
- }
- if ( !trav ) {
- prev->next = frame;
- }
- }
-}
+ /* now data of data_size size */
-static void DumpFrame(ByteIOContext *pb, FLVFrame *frame)
-{
-//av_log(NULL, AV_LOG_DEBUG, "T%02X S%d T%d R%d F%02X ... R%08X\n", frame->type, frame->size+1, frame->timestamp, 0, frame->flags, frame->size+1+11);
- put_byte(pb,frame->type); // message type
- put_be24(pb,frame->size+1); // include flags
- put_be24(pb,frame->timestamp); // time stamp
- put_be32(pb,frame->reserved); // reserved
- put_byte(pb,frame->flags);
- put_buffer(pb, frame->data, frame->size);
- put_be32(pb,frame->size+1+11); // reserved
- av_free(frame->data);
-}
+ /* first event name as a string */
+ put_byte(pb, AMF_DATA_TYPE_STRING);
+ put_amf_string(pb, "onMetaData"); // 12 bytes
-static void Dump(FLVContext *flv, ByteIOContext *pb, int count)
-{
- int c=0;
- FLVFrame *trav = flv->frames;
- FLVFrame *prev = 0;
- for (;trav;c++) {
- trav = trav->next;
+ /* mixed array (hash) with size and string/type/data tuples */
+ 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_double(pb, 0); // delayed write
+
+ 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);
+
+ put_amf_string(pb, "videocodecid");
+ put_amf_double(pb, videocodecid);
}
- trav = flv->frames;
- for ( ; c >= count; c-- ) {
- DumpFrame(pb,trav);
- prev = trav;
- trav = trav->next;
- av_free(prev);
+
+ 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);
}
- flv->frames = trav;
+
+ put_amf_string(pb, "filesize");
+ flv->filesize_offset= url_ftell(pb);
+ put_amf_double(pb, 0); // delayed write
+
+ put_amf_string(pb, "");
+ put_byte(pb, AMF_END_OF_OBJECT);
+
+ /* 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;
}
static int flv_write_trailer(AVFormatContext *s)
{
int64_t file_size;
- int flags = 0;
ByteIOContext *pb = &s->pb;
FLVContext *flv = s->priv_data;
- Dump(flv,pb,1);
-
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);
+ put_amf_double(pb, flv->duration / (double)1000);
+ url_fseek(pb, flv->filesize_offset, SEEK_SET);
+ put_amf_double(pb, file_size);
+
url_fseek(pb, file_size, SEEK_SET);
return 0;
}
-static int flv_write_packet(AVFormatContext *s, int stream_index,
- const uint8_t *buf, int size, int64_t timestamp)
+static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
{
ByteIOContext *pb = &s->pb;
- AVCodecContext *enc = &s->streams[stream_index]->codec;
+ AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
FLVContext *flv = s->priv_data;
- FLVFrame *frame = av_malloc(sizeof(FLVFrame));
-
- frame->next = 0;
- frame->size = size;
- frame->data = av_malloc(size);
- frame->timestamp = timestamp;
- frame->reserved= flv->reserved;
- memcpy(frame->data,buf,size);
-
-// av_log(s, AV_LOG_DEBUG, "type:%d pts: %lld size:%d\n", enc->codec_type, timestamp, size);
-
- if (enc->codec_type == CODEC_TYPE_VIDEO) {
- frame->type = 9;
- frame->flags = 2; // choose h263
- frame->flags |= enc->coded_frame->key_frame ? 0x10 : 0x20; // add keyframe indicator
- //frame->timestamp = ( ( flv->frameCount * (int64_t)FRAME_RATE_BASE * (int64_t)1000 ) / (int64_t)enc->frame_rate );
- //printf("%08x %f %f\n",frame->timestamp,(double)enc->frame_rate/(double)FRAME_RATE_BASE,1000*(double)FRAME_RATE_BASE/(double)enc->frame_rate);
- flv->hasVideo = 1;
+ int size= pkt->size;
+ int flags;
- InsertSorted(flv,frame);
+// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
- flv->frameCount ++;
- }
- else if (enc->codec_type == CODEC_TYPE_AUDIO) {
- int soundFormat = 0x02;
-
- switch (enc->sample_rate) {
- case 44100:
- soundFormat |= 0x0C;
- break;
- case 22050:
- soundFormat |= 0x08;
- break;
- case 11025:
- soundFormat |= 0x04;
- break;
- case 8000: //nellymoser only
- case 5512: //not mp3
- soundFormat |= 0x00;
- break;
- default:
- assert(0);
- }
+ if (enc->codec_type == CODEC_TYPE_VIDEO) {
+ put_byte(pb, FLV_TAG_TYPE_VIDEO);
- if (enc->channels > 1) {
- soundFormat |= 0x01;
- }
-
- switch(enc->codec_id){
- case CODEC_ID_MP3:
- soundFormat |= 0x20;
- break;
- case 0:
- soundFormat |= enc->codec_tag<<4;
- break;
- default:
- assert(0);
+ 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);
- if ( flv->initDelay == -1 ) {
- flv->initDelay = timestamp;
- }
- frame->type = 8;
- frame->flags = soundFormat;
-
-// if ( flv->audioTime == -1 ) {
-// flv->audioTime = ( ( ( flv->sampleCount - enc->delay ) * 8000 ) / flv->audioRate ) - flv->initDelay - 250;
-// if ( flv->audioTime < 0 ) {
-// flv->audioTime = 0;
-// }
-// }
-
-#ifdef CONFIG_MP3LAME
- if (enc->codec_id == CODEC_ID_MP3 ) {
- int mp3FrameSize = 0;
- int mp3SampleRate = 0;
- int mp3IsMono = 0;
- int mp3SamplesPerFrame = 0;
-
- /* copy out mp3 header from ring buffer */
- if(!mp3info(buf,&mp3FrameSize,&mp3SamplesPerFrame,&mp3SampleRate,&mp3IsMono))
- assert(0);
- assert ( size == mp3FrameSize );
- assert(enc->sample_rate == mp3SampleRate);
-// assert(enc->frame_size == mp3SamplesPerFrame);
-//av_log(NULL, AV_LOG_DEBUG, "sizes: %d %d\n", enc->frame_size, mp3SamplesPerFrame);
-
- frame->timestamp = (1000*flv->sampleCount + enc->sample_rate/2)/(enc->sample_rate);
- flv->sampleCount += mp3SamplesPerFrame;
- }
-#endif
-
- // We got audio! Make sure we set this to the global flags on closure
- flv->hasAudio = 1;
- InsertSorted(flv,frame);
- }else
- assert(0);
- Dump(flv,pb,128);
+ put_byte(pb, FLV_TAG_TYPE_AUDIO);
+ }
+
+ 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;
+
put_flush_packet(pb);
return 0;
}
-static AVOutputFormat flv_oformat = {
+AVOutputFormat flv_muxer = {
"flv",
"flv format",
- "video/x-flashvideo",
+ "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},
};
-
-int flvenc_init(void)
-{
- av_register_output_format(&flv_oformat);
- return 0;
-}
projects / ffmpeg / blobdiff