X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fflvenc.c;h=623bea701ef3d590109ae8eab88a7cb5f3e9bc7d;hb=bc4d156140c42185433126d838ed454266a4567b;hp=3b63ecaa1288414cf808df01ee110d7046400641;hpb=71e685b0183b17e43da3959e620fe22afbe8a64c;p=ffmpeg diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c index 3b63ecaa128..623bea701ef 100644 --- a/libavformat/flvenc.c +++ b/libavformat/flvenc.c @@ -1,27 +1,31 @@ /* * 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/intfloat.h" #include "avformat.h" #include "flv.h" -#include "riff.h" +#include "internal.h" #include "avc.h" +#include "metadata.h" +#include "libavutil/dict.h" #undef NDEBUG #include @@ -29,6 +33,7 @@ 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 }, @@ -37,12 +42,13 @@ static const AVCodecTag flv_video_codec_ids[] = { 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_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} }; @@ -51,15 +57,29 @@ typedef struct FLVContext { int64_t duration_offset; int64_t filesize_offset; int64_t duration; - int delay; ///< first dts delay for AVC + int64_t delay; ///< first dts delay (needed for AVC & Speex) } FLVContext; +typedef struct FLVStreamContext { + 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; if (enc->codec_id == CODEC_ID_AAC) // specs force these parameters return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | FLV_SAMPLESSIZE_16BIT | FLV_STEREO; - else { + 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; + } + return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT; + } else { switch (enc->sample_rate) { case 44100: flags |= FLV_SAMPLERATE_44100HZ; @@ -70,6 +90,7 @@ static int get_audio_flags(AVCodecContext *enc){ case 11025: flags |= FLV_SAMPLERATE_11025HZ; break; + case 16000: //nellymoser only case 8000: //nellymoser only case 5512: //not mp3 if(enc->codec_id != CODEC_ID_MP3){ @@ -90,7 +111,7 @@ static int get_audio_flags(AVCodecContext *enc){ case CODEC_ID_MP3: flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT; break; - case CODEC_ID_PCM_S8: + case CODEC_ID_PCM_U8: flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_8BIT; break; case CODEC_ID_PCM_S16BE: @@ -105,6 +126,8 @@ static int get_audio_flags(AVCodecContext *enc){ case 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; } @@ -120,36 +143,50 @@ static int get_audio_flags(AVCodecContext *enc){ 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) { + 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) { - put_byte(pb, AMF_DATA_TYPE_NUMBER); - put_be64(pb, av_dbl2int(d)); + avio_w8(pb, AMF_DATA_TYPE_NUMBER); + avio_wb64(pb, av_double2int(d)); } -static void put_amf_bool(ByteIOContext *pb, int b) { - put_byte(pb, AMF_DATA_TYPE_BOOL); - put_byte(pb, !!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) { - ByteIOContext *pb = s->pb; + AVIOContext *pb = s->pb; FLVContext *flv = s->priv_data; AVCodecContext *audio_enc = NULL, *video_enc = NULL; - int i; + int i, metadata_count = 0; double framerate = 0.0; - int metadata_size_pos, data_size; + int64_t metadata_size_pos, data_size, metadata_count_pos; + AVDictionaryEntry *tag = NULL; for(i=0; inb_streams; i++){ AVCodecContext *enc = s->streams[i]->codec; - if (enc->codec_type == CODEC_TYPE_VIDEO) { + 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 { @@ -165,46 +202,56 @@ static int flv_write_header(AVFormatContext *s) if(get_audio_flags(enc)<0) return -1; } - av_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */ + 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; } - put_tag(pb,"FLV"); - put_byte(pb,1); - put_byte(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc + flv->delay = AV_NOPTS_VALUE; + + avio_write(pb, "FLV", 3); + avio_w8(pb,1); + avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc + FLV_HEADER_FLAG_HASVIDEO * !!video_enc); - put_be32(pb,9); - put_be32(pb,0); + avio_wb32(pb,9); + avio_wb32(pb,0); for(i=0; inb_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 + 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 */ - 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, 0); // time stamp + 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 = 5*!!video_enc + 5*!!audio_enc + 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); + 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"); @@ -214,7 +261,7 @@ static int flv_write_header(AVFormatContext *s) put_amf_double(pb, video_enc->height); put_amf_string(pb, "videodatarate"); - put_amf_double(pb, s->bit_rate / 1024.0); + put_amf_double(pb, video_enc->bit_rate / 1024.0); put_amf_string(pb, "framerate"); put_amf_double(pb, framerate); @@ -224,11 +271,14 @@ static int flv_write_header(AVFormatContext *s) } 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_S8 ? 8 : 16); + 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); @@ -237,46 +287,57 @@ static int flv_write_header(AVFormatContext *s) 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); + 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); 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; - put_byte(pb, enc->codec_type == CODEC_TYPE_VIDEO ? + avio_w8(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO ? FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO); - put_be24(pb, 0); // size patched later - put_be24(pb, 0); // ts - put_byte(pb, 0); // ts ext - put_be24(pb, 0); // streamid - pos = url_ftell(pb); + 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) { - put_byte(pb, get_audio_flags(enc)); - put_byte(pb, 0); // AAC sequence header - put_buffer(pb, enc->extradata, enc->extradata_size); + avio_w8(pb, get_audio_flags(enc)); + avio_w8(pb, 0); // AAC sequence header + avio_write(pb, enc->extradata, enc->extradata_size); } else { - put_byte(pb, enc->codec_tag | FLV_FRAME_KEY); // flags - put_byte(pb, 0); // AVC sequence header - put_be24(pb, 0); // composition time + 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 = url_ftell(pb) - pos; - url_fseek(pb, -data_size - 10, SEEK_CUR); - put_be24(pb, data_size); - url_fseek(pb, data_size + 10 - 3, SEEK_CUR); - put_be32(pb, data_size + 11); // previous tag 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 } } @@ -287,26 +348,38 @@ static int flv_write_trailer(AVFormatContext *s) { int64_t file_size; - ByteIOContext *pb = s->pb; + AVIOContext *pb = s->pb; FLVContext *flv = s->priv_data; + int i; - file_size = url_ftell(pb); + /* Add EOS tag */ + for (i = 0; i < s->nb_streams; i++) { + 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) { + put_avc_eos_tag(pb, sc->last_ts); + } + } - /* update informations */ - url_fseek(pb, flv->duration_offset, SEEK_SET); + file_size = avio_tell(pb); + + /* update information */ + avio_seek(pb, flv->duration_offset, SEEK_SET); put_amf_double(pb, flv->duration / (double)1000); - url_fseek(pb, flv->filesize_offset, SEEK_SET); + avio_seek(pb, flv->filesize_offset, SEEK_SET); 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; + 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; @@ -322,8 +395,8 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) else flags_size= 1; - if (enc->codec_type == CODEC_TYPE_VIDEO) { - put_byte(pb, FLV_TAG_TYPE_VIDEO); + if (enc->codec_type == AVMEDIA_TYPE_VIDEO) { + avio_w8(pb, FLV_TAG_TYPE_VIDEO); flags = enc->codec_tag; if(flags == 0) { @@ -331,70 +404,86 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) return -1; } - flags |= pkt->flags & PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER; + flags |= pkt->flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER; } else { - assert(enc->codec_type == CODEC_TYPE_AUDIO); + assert(enc->codec_type == AVMEDIA_TYPE_AUDIO); flags = get_audio_flags(enc); assert(size); - put_byte(pb, FLV_TAG_TYPE_AUDIO); + avio_w8(pb, FLV_TAG_TYPE_AUDIO); } if (enc->codec_id == CODEC_ID_H264) { - /* check if extradata looks like mp4 formated */ + /* 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 (!flv->delay && pkt->dts < 0) - flv->delay = -pkt->dts; + } + if (flv->delay == AV_NOPTS_VALUE) + flv->delay = -pkt->dts; + 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 - put_be24(pb,size + flags_size); - put_be24(pb,ts); - put_byte(pb,(ts >> 24) & 0x7F); // timestamps are 32bits _signed_ - put_be24(pb,flv->reserved); - put_byte(pb,flags); + + /* check Speex packet duration */ + if (enc->codec_id == 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) - put_byte(pb,0); + avio_w8(pb,0); if (enc->codec_id == CODEC_ID_VP6F) - put_byte(pb, enc->extradata_size ? enc->extradata[0] : 0); + avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0); else if (enc->codec_id == CODEC_ID_AAC) - put_byte(pb,1); // AAC raw + avio_w8(pb,1); // AAC raw else if (enc->codec_id == CODEC_ID_H264) { - put_byte(pb,1); // AVC NALU - put_be24(pb,pkt->pts - pkt->dts); + avio_w8(pb,1); // AVC NALU + avio_wb24(pb,pkt->pts - pkt->dts); } - put_buffer(pb, data ? data : pkt->data, size); + avio_write(pb, data ? data : pkt->data, size); - put_be32(pb,size+flags_size+11); // previous tag size + avio_wb32(pb,size+flags_size+11); // previous tag size flv->duration = FFMAX(flv->duration, pkt->pts + flv->delay + pkt->duration); - put_flush_packet(pb); + avio_flush(pb); av_free(data); - return 0; + return pb->error; } -AVOutputFormat flv_muxer = { - "flv", - NULL_IF_CONFIG_SMALL("FLV format"), - "video/x-flv", - "flv", - sizeof(FLVContext), +AVOutputFormat ff_flv_muxer = { + .name = "flv", + .long_name = NULL_IF_CONFIG_SMALL("FLV format"), + .mime_type = "video/x-flv", + .extensions = "flv", + .priv_data_size = sizeof(FLVContext), #if CONFIG_LIBMP3LAME - CODEC_ID_MP3, + .audio_codec = CODEC_ID_MP3, #else // CONFIG_LIBMP3LAME - CODEC_ID_ADPCM_SWF, + .audio_codec = CODEC_ID_ADPCM_SWF, #endif // CONFIG_LIBMP3LAME - CODEC_ID_FLV1, - flv_write_header, - flv_write_packet, - flv_write_trailer, + .video_codec = 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, + .flags= AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS, };