* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavutil/intfloat_readwrite.h"
+#include "libavutil/dict.h"
+#include "libavutil/intfloat.h"
+#include "avc.h"
#include "avformat.h"
#include "flv.h"
#include "internal.h"
-#include "avc.h"
#include "metadata.h"
-#include "libavutil/dict.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_FLASHSV2, FLV_CODECID_SCREEN2},
- {CODEC_ID_VP6F, FLV_CODECID_VP6 },
- {CODEC_ID_VP6, FLV_CODECID_VP6 },
- {CODEC_ID_H264, FLV_CODECID_H264 },
- {CODEC_ID_NONE, 0}
+ { AV_CODEC_ID_FLV1, FLV_CODECID_H263 },
+ { AV_CODEC_ID_FLASHSV, FLV_CODECID_SCREEN },
+ { AV_CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2 },
+ { AV_CODEC_ID_VP6F, FLV_CODECID_VP6 },
+ { AV_CODEC_ID_VP6A, FLV_CODECID_VP6A },
+ { AV_CODEC_ID_H264, FLV_CODECID_H264 },
+ { AV_CODEC_ID_NONE, 0 }
};
static const AVCodecTag flv_audio_codec_ids[] = {
- {CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET},
- {CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
- {CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> 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_AAC, FLV_CODECID_AAC >> FLV_AUDIO_CODECID_OFFSET},
- {CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET},
- {CODEC_ID_SPEEX, FLV_CODECID_SPEEX >> FLV_AUDIO_CODECID_OFFSET},
- {CODEC_ID_NONE, 0}
+ { AV_CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_AAC, FLV_CODECID_AAC >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_PCM_MULAW, FLV_CODECID_PCM_MULAW >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_PCM_ALAW, FLV_CODECID_PCM_ALAW >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_SPEEX, FLV_CODECID_SPEEX >> FLV_AUDIO_CODECID_OFFSET },
+ { AV_CODEC_ID_NONE, 0 }
};
typedef struct FLVContext {
- int reserved;
+ int reserved;
int64_t duration_offset;
int64_t filesize_offset;
int64_t duration;
+ int64_t delay; ///< first dts delay (needed for AVC & Speex)
+
+ AVCodecContext *audio_enc;
+ AVCodecContext *video_enc;
+ double framerate;
+ AVCodecContext *data_enc;
} FLVContext;
typedef struct FLVStreamContext {
- int delay; ///< first dts delay for each stream (needed for AVC & Speex)
int64_t last_ts; ///< last timestamp for each stream
} FLVStreamContext;
-static int get_audio_flags(AVCodecContext *enc){
- int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
+static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc)
+{
+ int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT
+ : FLV_SAMPLESSIZE_8BIT;
- if (enc->codec_id == CODEC_ID_AAC) // specs force these parameters
- return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
- else if (enc->codec_id == CODEC_ID_SPEEX) {
+ if (enc->codec_id == AV_CODEC_ID_AAC) // specs force these parameters
+ return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ |
+ FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
+ else if (enc->codec_id == AV_CODEC_ID_SPEEX) {
if (enc->sample_rate != 16000) {
- av_log(enc, AV_LOG_ERROR, "flv only supports wideband (16kHz) Speex audio\n");
+ av_log(s, AV_LOG_ERROR,
+ "flv only supports wideband (16kHz) Speex audio\n");
return -1;
}
if (enc->channels != 1) {
- av_log(enc, AV_LOG_ERROR, "flv only supports mono Speex audio\n");
+ av_log(s, AV_LOG_ERROR, "flv only supports mono Speex audio\n");
return -1;
}
return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT;
} else {
- switch (enc->sample_rate) {
- case 44100:
+ switch (enc->sample_rate) {
+ case 44100:
flags |= FLV_SAMPLERATE_44100HZ;
break;
- case 22050:
+ case 22050:
flags |= FLV_SAMPLERATE_22050HZ;
break;
- case 11025:
+ case 11025:
flags |= FLV_SAMPLERATE_11025HZ;
break;
- case 8000: //nellymoser only
- case 5512: //not mp3
- if(enc->codec_id != CODEC_ID_MP3){
+ case 16000: // nellymoser only
+ case 8000: // nellymoser only
+ case 5512: // not MP3
+ if (enc->codec_id != AV_CODEC_ID_MP3) {
flags |= FLV_SAMPLERATE_SPECIAL;
break;
}
default:
- av_log(enc, AV_LOG_ERROR, "flv does not support that sample rate, choose from (44100, 22050, 11025).\n");
+ av_log(s, AV_LOG_ERROR,
+ "flv does not support that sample rate, "
+ "choose from (44100, 22050, 11025).\n");
return -1;
- }
+ }
}
- if (enc->channels > 1) {
+ if (enc->channels > 1)
flags |= FLV_STEREO;
- }
- switch(enc->codec_id){
- case CODEC_ID_MP3:
+ switch (enc->codec_id) {
+ case AV_CODEC_ID_MP3:
flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
break;
- case CODEC_ID_PCM_U8:
+ case AV_CODEC_ID_PCM_U8:
flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_8BIT;
break;
- case CODEC_ID_PCM_S16BE:
+ case AV_CODEC_ID_PCM_S16BE:
flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_16BIT;
break;
- case CODEC_ID_PCM_S16LE:
+ case AV_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;
+ case AV_CODEC_ID_ADPCM_SWF:
+ flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT;
break;
- case CODEC_ID_NELLYMOSER:
- if (enc->sample_rate == 8000) {
- flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
- } else {
- flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
- }
+ case AV_CODEC_ID_NELLYMOSER:
+ if (enc->sample_rate == 8000)
+ flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
+ else if (enc->sample_rate == 16000)
+ flags |= FLV_CODECID_NELLYMOSER_16KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
+ else
+ flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
+ break;
+ case AV_CODEC_ID_PCM_MULAW:
+ flags = FLV_CODECID_PCM_MULAW | FLV_SAMPLERATE_SPECIAL | FLV_SAMPLESSIZE_16BIT;
+ break;
+ case AV_CODEC_ID_PCM_ALAW:
+ flags = FLV_CODECID_PCM_ALAW | FLV_SAMPLERATE_SPECIAL | FLV_SAMPLESSIZE_16BIT;
break;
case 0:
- flags |= enc->codec_tag<<4;
+ flags |= enc->codec_tag << 4;
break;
default:
- av_log(enc, AV_LOG_ERROR, "codec not compatible with flv\n");
+ av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
return -1;
}
avio_write(pb, str, len);
}
-static void put_avc_eos_tag(AVIOContext *pb, unsigned ts) {
+static void put_avc_eos_tag(AVIOContext *pb, unsigned ts)
+{
avio_w8(pb, FLV_TAG_TYPE_VIDEO);
- avio_wb24(pb, 5); /* Tag Data Size */
- avio_wb24(pb, ts); /* lower 24 bits of timestamp in ms*/
- avio_w8(pb, (ts >> 24) & 0x7F); /* MSB of ts in ms*/
- avio_wb24(pb, 0); /* StreamId = 0 */
- avio_w8(pb, 23); /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
- avio_w8(pb, 2); /* AVC end of sequence */
- avio_wb24(pb, 0); /* Always 0 for AVC EOS. */
- avio_wb32(pb, 16); /* Size of FLV tag */
+ avio_wb24(pb, 5); /* Tag Data Size */
+ avio_wb24(pb, ts); /* lower 24 bits of timestamp in ms */
+ avio_w8(pb, (ts >> 24) & 0x7F); /* MSB of ts in ms */
+ avio_wb24(pb, 0); /* StreamId = 0 */
+ avio_w8(pb, 23); /* ub[4] FrameType = 1, ub[4] CodecId = 7 */
+ avio_w8(pb, 2); /* AVC end of sequence */
+ avio_wb24(pb, 0); /* Always 0 for AVC EOS. */
+ avio_wb32(pb, 16); /* Size of FLV tag */
}
static void put_amf_double(AVIOContext *pb, double d)
{
avio_w8(pb, AMF_DATA_TYPE_NUMBER);
- avio_wb64(pb, av_dbl2int(d));
+ avio_wb64(pb, av_double2int(d));
}
-static void put_amf_bool(AVIOContext *pb, int b) {
+static void put_amf_bool(AVIOContext *pb, int b)
+{
avio_w8(pb, AMF_DATA_TYPE_BOOL);
avio_w8(pb, !!b);
}
-static int flv_write_header(AVFormatContext *s)
+static void write_metadata(AVFormatContext *s, unsigned int ts)
{
AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
- AVCodecContext *audio_enc = NULL, *video_enc = NULL;
- int i, metadata_count = 0;
- double framerate = 0.0;
+ int metadata_count = 0;
int64_t metadata_size_pos, data_size, metadata_count_pos;
AVDictionaryEntry *tag = NULL;
- for(i=0; i<s->nb_streams; i++){
- AVCodecContext *enc = s->streams[i]->codec;
- FLVStreamContext *sc;
- if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
- 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);
- }
- video_enc = enc;
- if(enc->codec_tag == 0) {
- av_log(enc, AV_LOG_ERROR, "video codec not compatible with flv\n");
- return -1;
- }
- } else {
- audio_enc = enc;
- if(get_audio_flags(enc)<0)
- return -1;
- }
- av_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
-
- sc = av_mallocz(sizeof(FLVStreamContext));
- if (!sc)
- return AVERROR(ENOMEM);
- s->streams[i]->priv_data = sc;
- sc->last_ts = -1;
- }
- avio_write(pb, "FLV", 3);
- avio_w8(pb,1);
- avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
- + FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
- avio_wb32(pb,9);
- avio_wb32(pb,0);
-
- for(i=0; i<s->nb_streams; i++){
- if(s->streams[i]->codec->codec_tag == 5){
- avio_w8(pb,8); // message type
- avio_wb24(pb,0); // include flags
- avio_wb24(pb,0); // time stamp
- avio_wb32(pb,0); // reserved
- avio_wb32(pb,11); // size
- flv->reserved=5;
- }
- }
-
/* write meta_tag */
- avio_w8(pb, 18); // tag type META
- metadata_size_pos= avio_tell(pb);
- avio_wb24(pb, 0); // size of data part (sum of all parts below)
- avio_wb24(pb, 0); // time stamp
- avio_wb32(pb, 0); // reserved
+ avio_w8(pb, 18); // tag type META
+ metadata_size_pos = avio_tell(pb);
+ avio_wb24(pb, 0); // size of data part (sum of all parts below)
+ avio_wb24(pb, ts); // timestamp
+ avio_wb32(pb, 0); // reserved
/* now data of data_size size */
/* mixed array (hash) with size and string/type/data tuples */
avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
metadata_count_pos = avio_tell(pb);
- metadata_count = 5*!!video_enc + 5*!!audio_enc + 2; // +2 for duration and file size
+ metadata_count = 4 * !!flv->video_enc +
+ 5 * !!flv->audio_enc +
+ 1 * !!flv->data_enc +
+ 2; // +2 for duration and file size
+
avio_wb32(pb, metadata_count);
put_amf_string(pb, "duration");
- flv->duration_offset= avio_tell(pb);
- put_amf_double(pb, s->duration / AV_TIME_BASE); // fill in the guessed duration, it'll be corrected later if incorrect
+ flv->duration_offset = avio_tell(pb);
+
+ // fill in the guessed duration, it'll be corrected later if incorrect
+ put_amf_double(pb, s->duration / AV_TIME_BASE);
- if(video_enc){
+ if (flv->video_enc) {
put_amf_string(pb, "width");
- put_amf_double(pb, video_enc->width);
+ put_amf_double(pb, flv->video_enc->width);
put_amf_string(pb, "height");
- put_amf_double(pb, video_enc->height);
+ put_amf_double(pb, flv->video_enc->height);
put_amf_string(pb, "videodatarate");
- put_amf_double(pb, video_enc->bit_rate / 1024.0);
+ put_amf_double(pb, flv->video_enc->bit_rate / 1024.0);
- put_amf_string(pb, "framerate");
- put_amf_double(pb, framerate);
+ if (flv->framerate != 0.0) {
+ put_amf_string(pb, "framerate");
+ put_amf_double(pb, flv->framerate);
+ metadata_count++;
+ }
put_amf_string(pb, "videocodecid");
- put_amf_double(pb, video_enc->codec_tag);
+ put_amf_double(pb, flv->video_enc->codec_tag);
}
- if(audio_enc){
+ if (flv->audio_enc) {
put_amf_string(pb, "audiodatarate");
- put_amf_double(pb, audio_enc->bit_rate / 1024.0);
+ put_amf_double(pb, flv->audio_enc->bit_rate / 1024.0);
put_amf_string(pb, "audiosamplerate");
- put_amf_double(pb, audio_enc->sample_rate);
+ put_amf_double(pb, flv->audio_enc->sample_rate);
put_amf_string(pb, "audiosamplesize");
- put_amf_double(pb, audio_enc->codec_id == CODEC_ID_PCM_U8 ? 8 : 16);
+ put_amf_double(pb, flv->audio_enc->codec_id == AV_CODEC_ID_PCM_U8 ? 8 : 16);
put_amf_string(pb, "stereo");
- put_amf_bool(pb, audio_enc->channels == 2);
+ put_amf_bool(pb, flv->audio_enc->channels == 2);
put_amf_string(pb, "audiocodecid");
- put_amf_double(pb, audio_enc->codec_tag);
+ put_amf_double(pb, flv->audio_enc->codec_tag);
+ }
+
+ if (flv->data_enc) {
+ put_amf_string(pb, "datastream");
+ put_amf_double(pb, 0.0);
}
while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
}
put_amf_string(pb, "filesize");
- flv->filesize_offset= avio_tell(pb);
+ flv->filesize_offset = avio_tell(pb);
put_amf_double(pb, 0); // delayed write
put_amf_string(pb, "");
avio_w8(pb, AMF_END_OF_OBJECT);
/* write total size of tag */
- data_size= avio_tell(pb) - metadata_size_pos - 10;
+ data_size = avio_tell(pb) - metadata_size_pos - 10;
avio_seek(pb, metadata_count_pos, SEEK_SET);
avio_wb32(pb, metadata_count);
avio_wb24(pb, data_size);
avio_skip(pb, data_size + 10 - 3);
avio_wb32(pb, data_size + 11);
+}
+
+static int unsupported_codec(AVFormatContext *s,
+ const char* type, int codec_id)
+{
+ const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
+ av_log(s, AV_LOG_ERROR,
+ "%s codec %s not compatible with flv\n",
+ type,
+ desc ? desc->name : "unknown");
+ return AVERROR(ENOSYS);
+}
+
+static int flv_write_header(AVFormatContext *s)
+{
+ int i;
+ AVIOContext *pb = s->pb;
+ FLVContext *flv = s->priv_data;
+ int64_t data_size;
for (i = 0; i < s->nb_streams; i++) {
AVCodecContext *enc = s->streams[i]->codec;
- if (enc->codec_id == CODEC_ID_AAC || enc->codec_id == CODEC_ID_H264) {
+ FLVStreamContext *sc;
+ switch (enc->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (s->streams[i]->avg_frame_rate.den &&
+ s->streams[i]->avg_frame_rate.num) {
+ flv->framerate = av_q2d(s->streams[i]->avg_frame_rate);
+ }
+ if (flv->video_enc) {
+ av_log(s, AV_LOG_ERROR,
+ "at most one video stream is supported in flv\n");
+ return AVERROR(EINVAL);
+ }
+ flv->video_enc = enc;
+ if (!ff_codec_get_tag(flv_video_codec_ids, enc->codec_id))
+ return unsupported_codec(s, "Video", enc->codec_id);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ if (flv->audio_enc) {
+ av_log(s, AV_LOG_ERROR,
+ "at most one audio stream is supported in flv\n");
+ return AVERROR(EINVAL);
+ }
+ flv->audio_enc = enc;
+ if (get_audio_flags(s, enc) < 0)
+ return unsupported_codec(s, "Audio", enc->codec_id);
+ break;
+ case AVMEDIA_TYPE_DATA:
+ if (enc->codec_id != AV_CODEC_ID_TEXT)
+ return unsupported_codec(s, "Data", enc->codec_id);
+ flv->data_enc = enc;
+ break;
+ default:
+ av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
+ return -1;
+ }
+ avpriv_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
+
+ sc = av_mallocz(sizeof(FLVStreamContext));
+ if (!sc)
+ return AVERROR(ENOMEM);
+ s->streams[i]->priv_data = sc;
+ sc->last_ts = -1;
+ }
+
+ flv->delay = AV_NOPTS_VALUE;
+
+ avio_write(pb, "FLV", 3);
+ avio_w8(pb, 1);
+ avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!flv->audio_enc +
+ FLV_HEADER_FLAG_HASVIDEO * !!flv->video_enc);
+ avio_wb32(pb, 9);
+ avio_wb32(pb, 0);
+
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->codec->codec_tag == 5) {
+ avio_w8(pb, 8); // message type
+ avio_wb24(pb, 0); // include flags
+ avio_wb24(pb, 0); // time stamp
+ avio_wb32(pb, 0); // reserved
+ avio_wb32(pb, 11); // size
+ flv->reserved = 5;
+ }
+
+ write_metadata(s, 0);
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVCodecContext *enc = s->streams[i]->codec;
+ if (enc->codec_id == AV_CODEC_ID_AAC || enc->codec_id == AV_CODEC_ID_H264) {
int64_t pos;
avio_w8(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO ?
- FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
+ FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO);
avio_wb24(pb, 0); // size patched later
avio_wb24(pb, 0); // ts
- avio_w8(pb, 0); // ts ext
+ avio_w8(pb, 0); // ts ext
avio_wb24(pb, 0); // streamid
pos = avio_tell(pb);
- if (enc->codec_id == CODEC_ID_AAC) {
- avio_w8(pb, get_audio_flags(enc));
+ if (enc->codec_id == AV_CODEC_ID_AAC) {
+ avio_w8(pb, get_audio_flags(s, enc));
avio_w8(pb, 0); // AAC sequence header
avio_write(pb, enc->extradata, enc->extradata_size);
} else {
AVCodecContext *enc = s->streams[i]->codec;
FLVStreamContext *sc = s->streams[i]->priv_data;
if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
- enc->codec_id == CODEC_ID_H264) {
+ enc->codec_id == AV_CODEC_ID_H264)
put_avc_eos_tag(pb, sc->last_ts);
- }
}
file_size = avio_tell(pb);
- /* update informations */
- avio_seek(pb, flv->duration_offset, SEEK_SET);
- put_amf_double(pb, flv->duration / (double)1000);
- avio_seek(pb, flv->filesize_offset, SEEK_SET);
- put_amf_double(pb, file_size);
+ /* update information */
+ if (avio_seek(pb, flv->duration_offset, SEEK_SET) < 0)
+ av_log(s, AV_LOG_WARNING, "Failed to update header with correct duration.\n");
+ else
+ put_amf_double(pb, flv->duration / (double)1000);
+ if (avio_seek(pb, flv->filesize_offset, SEEK_SET) < 0)
+ av_log(s, AV_LOG_WARNING, "Failed to update header with correct filesize.\n");
+ else
+ put_amf_double(pb, file_size);
avio_seek(pb, file_size, SEEK_SET);
return 0;
static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
{
- AVIOContext *pb = s->pb;
- AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
- FLVContext *flv = s->priv_data;
+ AVIOContext *pb = s->pb;
+ AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
+ FLVContext *flv = s->priv_data;
FLVStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
unsigned ts;
- int size= pkt->size;
- uint8_t *data= NULL;
- int flags, flags_size;
+ int size = pkt->size;
+ uint8_t *data = NULL;
+ int flags = 0, flags_size;
+
+ if (enc->codec_id == AV_CODEC_ID_VP6F || enc->codec_id == AV_CODEC_ID_VP6A ||
+ enc->codec_id == AV_CODEC_ID_AAC)
+ flags_size = 2;
+ else if (enc->codec_id == AV_CODEC_ID_H264)
+ flags_size = 5;
+ else
+ flags_size = 1;
-// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
+ if (flv->delay == AV_NOPTS_VALUE)
+ flv->delay = -pkt->dts;
- if(enc->codec_id == CODEC_ID_VP6 || enc->codec_id == CODEC_ID_VP6F ||
- enc->codec_id == CODEC_ID_AAC)
- flags_size= 2;
- else if(enc->codec_id == CODEC_ID_H264)
- flags_size= 5;
- else
- flags_size= 1;
+ if (pkt->dts < -flv->delay) {
+ av_log(s, AV_LOG_WARNING,
+ "Packets are not in the proper order with respect to DTS\n");
+ return AVERROR(EINVAL);
+ }
+
+ ts = pkt->dts + flv->delay; // add delay to force positive dts
+
+ if (s->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
+ write_metadata(s, ts);
+ s->event_flags &= ~AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
+ }
- if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
+ switch (enc->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
avio_w8(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 = ff_codec_get_tag(flv_video_codec_ids, enc->codec_id);
flags |= pkt->flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER;
- } else {
- assert(enc->codec_type == AVMEDIA_TYPE_AUDIO);
- flags = get_audio_flags(enc);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ flags = get_audio_flags(s, enc);
assert(size);
avio_w8(pb, FLV_TAG_TYPE_AUDIO);
+ break;
+ case AVMEDIA_TYPE_DATA:
+ avio_w8(pb, FLV_TAG_TYPE_META);
+ break;
+ default:
+ return AVERROR(EINVAL);
}
- if (enc->codec_id == CODEC_ID_H264) {
- /* check if extradata looks like mp4 formated */
- if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1) {
+ if (enc->codec_id == AV_CODEC_ID_H264)
+ /* check if extradata looks like MP4 */
+ if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1)
if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
return -1;
- }
- }
- if (!sc->delay && pkt->dts < 0)
- sc->delay = -pkt->dts;
-
- ts = pkt->dts + sc->delay; // add delay to force positive dts
/* check Speex packet duration */
- if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160) {
+ if (enc->codec_id == AV_CODEC_ID_SPEEX && ts - sc->last_ts > 160)
av_log(s, AV_LOG_WARNING, "Warning: Speex stream has more than "
"8 frames per packet. Adobe Flash "
"Player cannot handle this!\n");
- }
if (sc->last_ts < ts)
sc->last_ts = ts;
- avio_wb24(pb,size + flags_size);
- avio_wb24(pb,ts);
- avio_w8(pb,(ts >> 24) & 0x7F); // timestamps are 32bits _signed_
- avio_wb24(pb,flv->reserved);
- avio_w8(pb,flags);
- if (enc->codec_id == CODEC_ID_VP6)
- avio_w8(pb,0);
- if (enc->codec_id == CODEC_ID_VP6F)
- avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
- else if (enc->codec_id == CODEC_ID_AAC)
- avio_w8(pb,1); // AAC raw
- else if (enc->codec_id == CODEC_ID_H264) {
- avio_w8(pb,1); // AVC NALU
- avio_wb24(pb,pkt->pts - pkt->dts);
- }
+ avio_wb24(pb, size + flags_size);
+ avio_wb24(pb, ts);
+ avio_w8(pb, (ts >> 24) & 0x7F); // timestamps are 32 bits _signed_
+ avio_wb24(pb, flv->reserved);
- avio_write(pb, data ? data : pkt->data, size);
+ if (enc->codec_type == AVMEDIA_TYPE_DATA) {
+ int data_size;
+ int64_t metadata_size_pos = avio_tell(pb);
+ avio_w8(pb, AMF_DATA_TYPE_STRING);
+ put_amf_string(pb, "onTextData");
+ avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
+ avio_wb32(pb, 2);
+ put_amf_string(pb, "type");
+ avio_w8(pb, AMF_DATA_TYPE_STRING);
+ put_amf_string(pb, "Text");
+ put_amf_string(pb, "text");
+ avio_w8(pb, AMF_DATA_TYPE_STRING);
+ put_amf_string(pb, pkt->data);
+ put_amf_string(pb, "");
+ avio_w8(pb, AMF_END_OF_OBJECT);
+ /* write total size of tag */
+ data_size = avio_tell(pb) - metadata_size_pos;
+ avio_seek(pb, metadata_size_pos - 10, SEEK_SET);
+ avio_wb24(pb, data_size);
+ avio_seek(pb, data_size + 10 - 3, SEEK_CUR);
+ avio_wb32(pb, data_size + 11);
+ } else {
+ avio_w8(pb,flags);
+ if (enc->codec_id == AV_CODEC_ID_VP6F || enc->codec_id == AV_CODEC_ID_VP6A) {
+ if (enc->extradata_size)
+ avio_w8(pb, enc->extradata[0]);
+ else
+ avio_w8(pb, ((FFALIGN(enc->width, 16) - enc->width) << 4) |
+ (FFALIGN(enc->height, 16) - enc->height));
+ } else if (enc->codec_id == AV_CODEC_ID_AAC)
+ avio_w8(pb, 1); // AAC raw
+ else if (enc->codec_id == AV_CODEC_ID_H264) {
+ avio_w8(pb, 1); // AVC NALU
+ avio_wb24(pb, pkt->pts - pkt->dts);
+ }
- avio_wb32(pb,size+flags_size+11); // previous tag size
- flv->duration = FFMAX(flv->duration, pkt->pts + sc->delay + pkt->duration);
+ avio_write(pb, data ? data : pkt->data, size);
- avio_flush(pb);
+ avio_wb32(pb, size + flags_size + 11); // previous tag size
+ flv->duration = FFMAX(flv->duration,
+ pkt->pts + flv->delay + pkt->duration);
+ }
av_free(data);
AVOutputFormat ff_flv_muxer = {
.name = "flv",
- .long_name = NULL_IF_CONFIG_SMALL("FLV format"),
+ .long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
.mime_type = "video/x-flv",
.extensions = "flv",
.priv_data_size = sizeof(FLVContext),
-#if CONFIG_LIBMP3LAME
- .audio_codec = CODEC_ID_MP3,
-#else // CONFIG_LIBMP3LAME
- .audio_codec = CODEC_ID_ADPCM_SWF,
-#endif // CONFIG_LIBMP3LAME
- .video_codec = CODEC_ID_FLV1,
+ .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_ADPCM_SWF,
+ .video_codec = AV_CODEC_ID_FLV1,
.write_header = flv_write_header,
.write_packet = flv_write_packet,
.write_trailer = flv_write_trailer,
- .codec_tag= (const AVCodecTag* const []){flv_video_codec_ids, flv_audio_codec_ids, 0},
- .flags= AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
+ .codec_tag = (const AVCodecTag* const []) {
+ flv_video_codec_ids, flv_audio_codec_ids, 0
+ },
+ .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
+ AVFMT_TS_NONSTRICT,
};