/*
* FLV muxer
- * Copyright (c) 2003 The FFmpeg Project.
+ * Copyright (c) 2003 The Libav Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/dict.h"
+#include "libavutil/intfloat.h"
+#include "avc.h"
#include "avformat.h"
#include "flv.h"
-#include "riff.h"
+#include "internal.h"
+#include "metadata.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}
+ { 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_S8, 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_NELLYMOSER, FLV_CODECID_NELLYMOSER >> 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;
- offset_t duration_offset;
- offset_t filesize_offset;
+ int reserved;
+ int64_t duration_offset;
+ int64_t filesize_offset;
int64_t duration;
+ int64_t delay; ///< first dts delay (needed for AVC & Speex)
+
+ AVCodecParameters *audio_par;
+ AVCodecParameters *video_par;
+ double framerate;
+ AVCodecParameters *data_par;
} FLVContext;
-static int get_audio_flags(AVCodecContext *enc){
- int flags = (enc->bits_per_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
+typedef struct FLVStreamContext {
+ int64_t last_ts; ///< last timestamp for each stream
+} FLVStreamContext;
- switch (enc->sample_rate) {
- case 44100:
+static int get_audio_flags(AVFormatContext *s, AVCodecParameters *par)
+{
+ int flags = (par->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT
+ : FLV_SAMPLESSIZE_8BIT;
+
+ if (par->codec_id == AV_CODEC_ID_AAC) // specs force these parameters
+ return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ |
+ FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
+ else if (par->codec_id == AV_CODEC_ID_SPEEX) {
+ if (par->sample_rate != 16000) {
+ av_log(s, AV_LOG_ERROR,
+ "flv only supports wideband (16kHz) Speex audio\n");
+ return -1;
+ }
+ if (par->channels != 1) {
+ 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 (par->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 (par->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 (par->channels > 1)
flags |= FLV_STEREO;
- }
- switch(enc->codec_id){
- case CODEC_ID_MP3:
+ switch (par->codec_id) {
+ case AV_CODEC_ID_MP3:
flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
break;
- case CODEC_ID_PCM_S8:
+ 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 AV_CODEC_ID_NELLYMOSER:
+ if (par->sample_rate == 8000)
+ flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
+ else if (par->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 CODEC_ID_NELLYMOSER:
- flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
+ 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 |= par->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;
}
return flags;
}
-static void put_amf_string(ByteIOContext *pb, const char *str)
+static void put_amf_string(AVIOContext *pb, const char *str)
{
size_t len = strlen(str);
- put_be16(pb, len);
- put_buffer(pb, str, len);
+ avio_wb16(pb, len);
+ avio_write(pb, str, len);
}
-static void put_amf_double(ByteIOContext *pb, double d)
+static void put_avc_eos_tag(AVIOContext *pb, unsigned ts)
{
- put_byte(pb, AMF_DATA_TYPE_NUMBER);
- put_be64(pb, av_dbl2int(d));
+ 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 */
}
-static void put_amf_bool(ByteIOContext *pb, int b) {
- put_byte(pb, AMF_DATA_TYPE_BOOL);
- put_byte(pb, !!b);
+static void put_amf_double(AVIOContext *pb, double d)
+{
+ avio_w8(pb, AMF_DATA_TYPE_NUMBER);
+ avio_wb64(pb, av_double2int(d));
}
-static int flv_write_header(AVFormatContext *s)
+static void put_amf_bool(AVIOContext *pb, int b)
+{
+ avio_w8(pb, AMF_DATA_TYPE_BOOL);
+ avio_w8(pb, !!b);
+}
+
+static void write_metadata(AVFormatContext *s, unsigned int ts)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
- AVCodecContext *audio_enc = NULL, *video_enc = NULL;
- int i;
- double framerate = 0.0;
- int metadata_size_pos, data_size;
-
- for(i=0; i<s->nb_streams; i++){
- AVCodecContext *enc = s->streams[i]->codec;
- if (enc->codec_type == CODEC_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 */
- }
- put_tag(pb,"FLV");
- put_byte(pb,1);
- put_byte(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
- + FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
- 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,0); // reserved
- put_be32(pb,11); // size
- flv->reserved=5;
- }
- }
+ int metadata_count = 0;
+ int64_t metadata_size_pos, data_size, metadata_count_pos;
+ AVDictionaryEntry *tag = NULL;
/* 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
+ 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 */
/* first event name as a string */
- put_byte(pb, AMF_DATA_TYPE_STRING);
+ avio_w8(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_DATA_TYPE_MIXEDARRAY);
- put_be32(pb, 5*!!video_enc + 4*!!audio_enc + 2); // +2 for duration and file size
+ avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
+ metadata_count_pos = avio_tell(pb);
+ metadata_count = 4 * !!flv->video_par +
+ 5 * !!flv->audio_par +
+ 1 * !!flv->data_par +
+ 2; // +2 for duration and file size
+
+ avio_wb32(pb, metadata_count);
put_amf_string(pb, "duration");
- flv->duration_offset= url_ftell(pb);
- put_amf_double(pb, 0); // delayed write
+ 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_par) {
put_amf_string(pb, "width");
- put_amf_double(pb, video_enc->width);
+ put_amf_double(pb, flv->video_par->width);
put_amf_string(pb, "height");
- put_amf_double(pb, video_enc->height);
+ put_amf_double(pb, flv->video_par->height);
put_amf_string(pb, "videodatarate");
- put_amf_double(pb, s->bit_rate / 1024.0);
+ put_amf_double(pb, flv->video_par->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_par->codec_tag);
}
- if(audio_enc){
+ if (flv->audio_par) {
+ put_amf_string(pb, "audiodatarate");
+ put_amf_double(pb, flv->audio_par->bit_rate / 1024.0);
+
put_amf_string(pb, "audiosamplerate");
- put_amf_double(pb, audio_enc->sample_rate);
+ put_amf_double(pb, flv->audio_par->sample_rate);
put_amf_string(pb, "audiosamplesize");
- put_amf_double(pb, audio_enc->codec_id == CODEC_ID_PCM_S8 ? 8 : 16);
+ put_amf_double(pb, flv->audio_par->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_par->channels == 2);
put_amf_string(pb, "audiocodecid");
- put_amf_double(pb, audio_enc->codec_tag);
+ put_amf_double(pb, flv->audio_par->codec_tag);
+ }
+
+ if (flv->data_par) {
+ 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, tag->key);
+ avio_w8(pb, AMF_DATA_TYPE_STRING);
+ put_amf_string(pb, tag->value);
+ metadata_count++;
}
put_amf_string(pb, "filesize");
- flv->filesize_offset= url_ftell(pb);
+ flv->filesize_offset = avio_tell(pb);
put_amf_double(pb, 0); // delayed write
put_amf_string(pb, "");
- put_byte(pb, AMF_END_OF_OBJECT);
+ avio_w8(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);
+ data_size = avio_tell(pb) - metadata_size_pos - 10;
+
+ avio_seek(pb, metadata_count_pos, SEEK_SET);
+ avio_wb32(pb, metadata_count);
+
+ avio_seek(pb, metadata_size_pos, SEEK_SET);
+ 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++) {
+ AVCodecParameters *par = s->streams[i]->codecpar;
+ FLVStreamContext *sc;
+ switch (par->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_par) {
+ av_log(s, AV_LOG_ERROR,
+ "at most one video stream is supported in flv\n");
+ return AVERROR(EINVAL);
+ }
+ flv->video_par = par;
+ if (!ff_codec_get_tag(flv_video_codec_ids, par->codec_id))
+ return unsupported_codec(s, "Video", par->codec_id);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ if (flv->audio_par) {
+ av_log(s, AV_LOG_ERROR,
+ "at most one audio stream is supported in flv\n");
+ return AVERROR(EINVAL);
+ }
+ flv->audio_par = par;
+ if (get_audio_flags(s, par) < 0)
+ return unsupported_codec(s, "Audio", par->codec_id);
+ break;
+ case AVMEDIA_TYPE_DATA:
+ if (par->codec_id != AV_CODEC_ID_TEXT)
+ return unsupported_codec(s, "Data", par->codec_id);
+ flv->data_par = par;
+ 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_par +
+ FLV_HEADER_FLAG_HASVIDEO * !!flv->video_par);
+ avio_wb32(pb, 9);
+ avio_wb32(pb, 0);
+
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->codecpar->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++) {
+ AVCodecParameters *par = s->streams[i]->codecpar;
+ if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264) {
+ int64_t pos;
+ avio_w8(pb, par->codec_type == AVMEDIA_TYPE_VIDEO ?
+ 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_wb24(pb, 0); // streamid
+ pos = avio_tell(pb);
+ if (par->codec_id == AV_CODEC_ID_AAC) {
+ avio_w8(pb, get_audio_flags(s, par));
+ avio_w8(pb, 0); // AAC sequence header
+ avio_write(pb, par->extradata, par->extradata_size);
+ } else {
+ avio_w8(pb, par->codec_tag | FLV_FRAME_KEY); // flags
+ avio_w8(pb, 0); // AVC sequence header
+ avio_wb24(pb, 0); // composition time
+ ff_isom_write_avcc(pb, par->extradata, par->extradata_size);
+ }
+ data_size = avio_tell(pb) - pos;
+ avio_seek(pb, -data_size - 10, SEEK_CUR);
+ avio_wb24(pb, data_size);
+ avio_skip(pb, data_size + 10 - 3);
+ avio_wb32(pb, data_size + 11); // previous tag size
+ }
+ }
return 0;
}
{
int64_t file_size;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
+ int i;
+
+ /* Add EOS tag */
+ for (i = 0; i < s->nb_streams; i++) {
+ AVCodecParameters *par = s->streams[i]->codecpar;
+ FLVStreamContext *sc = s->streams[i]->priv_data;
+ if (par->codec_type == AVMEDIA_TYPE_VIDEO &&
+ par->codec_id == AV_CODEC_ID_H264)
+ put_avc_eos_tag(pb, sc->last_ts);
+ }
- file_size = url_ftell(pb);
+ file_size = avio_tell(pb);
- /* 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);
+ /* 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);
- url_fseek(pb, file_size, SEEK_SET);
+ avio_seek(pb, file_size, SEEK_SET);
return 0;
}
static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
{
- ByteIOContext *pb = s->pb;
- AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
- FLVContext *flv = s->priv_data;
- int size= pkt->size;
- int flags, flags_size;
+ AVIOContext *pb = s->pb;
+ AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
+ 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 = 0, flags_size;
+
+ if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A ||
+ par->codec_id == AV_CODEC_ID_AAC)
+ flags_size = 2;
+ else if (par->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)
- flags_size= 2;
- 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);
+ }
- if (enc->codec_type == CODEC_TYPE_VIDEO) {
- put_byte(pb, FLV_TAG_TYPE_VIDEO);
+ ts = pkt->dts + flv->delay; // add delay to force positive dts
- 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;
- }
+ if (s->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
+ write_metadata(s, ts);
+ s->event_flags &= ~AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
+ }
- 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);
+ switch (par->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ avio_w8(pb, FLV_TAG_TYPE_VIDEO);
+
+ flags = ff_codec_get_tag(flv_video_codec_ids, par->codec_id);
+
+ flags |= pkt->flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER;
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ flags = get_audio_flags(s, par);
assert(size);
- put_byte(pb, FLV_TAG_TYPE_AUDIO);
+ avio_w8(pb, FLV_TAG_TYPE_AUDIO);
+ break;
+ case AVMEDIA_TYPE_DATA:
+ avio_w8(pb, FLV_TAG_TYPE_META);
+ break;
+ default:
+ return AVERROR(EINVAL);
}
- put_be24(pb,size + flags_size);
- put_be24(pb,pkt->pts);
- put_byte(pb,pkt->pts >> 24);
- put_be24(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+flags_size+11); // previous tag size
- flv->duration = pkt->pts + pkt->duration;
-
- put_flush_packet(pb);
- return 0;
+ if (par->codec_id == AV_CODEC_ID_H264)
+ /* check if extradata looks like MP4 */
+ if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)
+ if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
+ return -1;
+
+ /* check Speex packet duration */
+ if (par->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 32 bits _signed_
+ avio_wb24(pb, flv->reserved);
+
+ if (par->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 (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A) {
+ if (par->extradata_size)
+ avio_w8(pb, par->extradata[0]);
+ else
+ avio_w8(pb, ((FFALIGN(par->width, 16) - par->width) << 4) |
+ (FFALIGN(par->height, 16) - par->height));
+ } else if (par->codec_id == AV_CODEC_ID_AAC)
+ avio_w8(pb, 1); // AAC raw
+ else if (par->codec_id == AV_CODEC_ID_H264) {
+ avio_w8(pb, 1); // AVC NALU
+ avio_wb24(pb, pkt->pts - pkt->dts);
+ }
+
+ avio_write(pb, data ? data : pkt->data, size);
+
+ avio_wb32(pb, size + flags_size + 11); // previous tag size
+ flv->duration = FFMAX(flv->duration,
+ pkt->pts + flv->delay + pkt->duration);
+ }
+
+ av_free(data);
+
+ return pb->error;
}
-AVOutputFormat flv_muxer = {
- "flv",
- "flv format",
- "video/x-flv",
- "flv",
- sizeof(FLVContext),
-#ifdef CONFIG_LIBMP3LAME
- CODEC_ID_MP3,
-#else // CONFIG_LIBMP3LAME
- CODEC_ID_ADPCM_SWF,
-#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},
+AVOutputFormat ff_flv_muxer = {
+ .name = "flv",
+ .long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
+ .mime_type = "video/x-flv",
+ .extensions = "flv",
+ .priv_data_size = sizeof(FLVContext),
+ .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 |
+ AVFMT_TS_NONSTRICT,
};
projects / ffmpeg / blobdiff