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9dbe8d9e22
FFmpeg/libavformat/flvenc.c
Michael Niedermayer 976a8b2179 Merge remote-tracking branch 'qatar/master' 
* qatar/master: (40 commits)
  H.264: template left MB handling
  H.264: faster fill_decode_caches
  H.264: faster write_back_*
  H.264: faster fill_filter_caches
  H.264: make filter_mb_fast support the case of unavailable top mb
  Do not include log.h in avutil.h
  Do not include pixfmt.h in avutil.h
  Do not include rational.h in avutil.h
  Do not include mathematics.h in avutil.h
  Do not include intfloat_readwrite.h in avutil.h
  Remove return statements following infinite loops without break
  RTSP: Doxygen comment cleanup
  doxygen: Escape '\' in Doxygen documentation.
  md5: cosmetics
  md5: use AV_WL32 to write result
  md5: add fate test
  md5: include correct headers
  md5: fix test program
  doxygen: Drop array size declarations from Doxygen parameter names.
  doxygen: Fix parameter names to match the function prototypes.
  ...

Conflicts:
	libavcodec/x86/dsputil_mmx.c
	libavformat/flvenc.c
	libavformat/oggenc.c
	libavformat/wtv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-07-04 00:45:21 +02:00

466 lines
15 KiB
C
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/*
* FLV muxer
* Copyright (c) 2003 The FFmpeg Project
*
* 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 2.1 of the License, or (at your option) any later version.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat_readwrite.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}
};
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}
};
typedef struct FLVContext {
int reserved;
int64_t duration_offset;
int64_t filesize_offset;
int64_t duration;
int delay; ///< first dts delay for AVC
int64_t last_video_ts;
} FLVContext;
static int get_audio_flags(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->sample_rate != 16000) {
av_log(enc, 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");
return -1;
}
if (enc->frame_size / 320 > 8) {
av_log(enc, AV_LOG_WARNING, "Warning: Speex stream has more than "
"8 frames per packet. Adobe Flash "
"Player cannot handle this!\n");
}
return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT;
} else {
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
if(enc->codec_id != 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");
return -1;
}
}
if (enc->channels > 1) {
flags |= FLV_STEREO;
}
switch(enc->codec_id){
case CODEC_ID_MP3:
flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
break;
case CODEC_ID_PCM_U8:
flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_8BIT;
break;
case CODEC_ID_PCM_S16BE:
flags |= FLV_CODECID_PCM | 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 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;
}
break;
case 0:
flags |= enc->codec_tag<<4;
break;
default:
av_log(enc, AV_LOG_ERROR, "codec not compatible with flv\n");
return -1;
}
return flags;
}
static void put_amf_string(AVIOContext *pb, const char *str)
{
size_t len = strlen(str);
avio_wb16(pb, len);
avio_write(pb, str, len);
}
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 */
}
static void put_amf_double(AVIOContext *pb, double d)
{
avio_w8(pb, AMF_DATA_TYPE_NUMBER);
avio_wb64(pb, av_dbl2int(d));
}
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)
{
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;
AVDictionaryEntry *tag = NULL;
for(i=0; i<s->nb_streams; i++){
AVCodecContext *enc = s->streams[i]->codec;
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 */
}
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;
}
}
flv->last_video_ts = -1;
/* 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
/* now data of data_size size */
/* first event name as a 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 */
avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
avio_wb32(pb, 5*!!video_enc + 5*!!audio_enc + 2); // +2 for duration and file size
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
if(video_enc){
put_amf_string(pb, "width");
put_amf_double(pb, video_enc->width);
put_amf_string(pb, "height");
put_amf_double(pb, video_enc->height);
put_amf_string(pb, "videodatarate");
put_amf_double(pb, video_enc->bit_rate / 1024.0);
put_amf_string(pb, "framerate");
put_amf_double(pb, framerate);
put_amf_string(pb, "videocodecid");
put_amf_double(pb, video_enc->codec_tag);
}
if(audio_enc){
put_amf_string(pb, "audiodatarate");
put_amf_double(pb, audio_enc->bit_rate / 1024.0);
put_amf_string(pb, "audiosamplerate");
put_amf_double(pb, 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_string(pb, "stereo");
put_amf_bool(pb, audio_enc->channels == 2);
put_amf_string(pb, "audiocodecid");
put_amf_double(pb, audio_enc->codec_tag);
}
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);
}
put_amf_string(pb, "filesize");
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;
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);
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) {
int64_t pos;
avio_w8(pb, enc->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 (enc->codec_id == CODEC_ID_AAC) {
avio_w8(pb, get_audio_flags(enc));
avio_w8(pb, 0); // AAC sequence header
avio_write(pb, enc->extradata, enc->extradata_size);
} else {
avio_w8(pb, enc->codec_tag | FLV_FRAME_KEY); // flags
avio_w8(pb, 0); // AVC sequence header
avio_wb24(pb, 0); // composition time
ff_isom_write_avcc(pb, enc->extradata, enc->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;
}
static int flv_write_trailer(AVFormatContext *s)
{
int64_t file_size;
AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
int i;
/* Add EOS tag */
for (i = 0; i < s->nb_streams; i++) {
AVCodecContext *enc = s->streams[i]->codec;
if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
enc->codec_id == CODEC_ID_H264) {
put_avc_eos_tag(pb, flv->last_video_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);
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;
unsigned ts;
int size= pkt->size;
uint8_t *data= NULL;
int flags, flags_size;
// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
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 (enc->codec_type == 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 |= 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);
assert(size);
avio_w8(pb, FLV_TAG_TYPE_AUDIO);
}
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 (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
return -1;
}
if (!flv->delay && pkt->dts < 0)
flv->delay = -pkt->dts;
} else if (enc->codec_id == CODEC_ID_AAC && pkt->size > 2 &&
(AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
av_log(s, AV_LOG_ERROR, "malformated aac bitstream, use -absf aac_adtstoasc\n");
return -1;
}
ts = pkt->dts + flv->delay; // add delay to force positive dts
if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
if (flv->last_video_ts < ts)
flv->last_video_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_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);
avio_flush(pb);
av_free(data);
return pb->error;
}
AVOutputFormat ff_flv_muxer = {
"flv",
NULL_IF_CONFIG_SMALL("FLV format"),
"video/x-flv",
"flv",
sizeof(FLVContext),
#if 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* const []){flv_video_codec_ids, flv_audio_codec_ids, 0},
.flags= AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
};
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