diff options
author | Luca Barbato <lu_zero@gentoo.org> | 2012-06-27 10:16:18 +0200 |
---|---|---|
committer | Diego Biurrun <diego@biurrun.de> | 2012-06-28 13:05:43 +0200 |
commit | 1cb34ea4fe1b95c3504393c4d9ea10d6f51f3166 (patch) | |
tree | b2e784d55046febad3ce4348d4b846227be9097e /libavformat/flvenc.c | |
parent | a11282259796562820e2bec371487e19743c7ad6 (diff) | |
download | ffmpeg-1cb34ea4fe1b95c3504393c4d9ea10d6f51f3166.tar.gz |
flvenc: K&R formatting cosmetics
Diffstat (limited to 'libavformat/flvenc.c')
-rw-r--r-- | libavformat/flvenc.c | 274 |
1 files changed, 142 insertions, 132 deletions
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c index 62756a100a..3caa6ded99 100644 --- a/libavformat/flvenc.c +++ b/libavformat/flvenc.c @@ -19,41 +19,41 @@ * 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 "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} + { 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} + { 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; + int reserved; int64_t duration_offset; int64_t filesize_offset; int64_t duration; @@ -66,13 +66,16 @@ typedef struct FLVStreamContext { static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc) { - int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT; + 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; + 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(s, 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) { @@ -81,34 +84,35 @@ static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc) } 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 16000: //nellymoser only - 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 != CODEC_ID_MP3) { flags |= FLV_SAMPLERATE_SPECIAL; break; } default: - av_log(s, 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){ + switch (enc->codec_id) { case CODEC_ID_MP3: flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT; break; @@ -122,19 +126,18 @@ static int get_audio_flags(AVFormatContext *s, AVCodecContext *enc) flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT; break; case CODEC_ID_ADPCM_SWF: - flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT; + 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 if (enc->sample_rate == 16000) { + 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; - } + else + flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT; break; case 0: - flags |= enc->codec_tag<<4; + flags |= enc->codec_tag << 4; break; default: av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n"); @@ -151,16 +154,17 @@ static void put_amf_string(AVIOContext *pb, const char *str) 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) @@ -169,7 +173,8 @@ static void put_amf_double(AVIOContext *pb, double 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); } @@ -184,18 +189,19 @@ static int flv_write_header(AVFormatContext *s) int64_t metadata_size_pos, data_size, metadata_count_pos; AVDictionaryEntry *tag = NULL; - for(i=0; i<s->nb_streams; i++){ + for (i = 0; i < s->nb_streams; i++) { AVCodecContext *enc = s->streams[i]->codec; FLVStreamContext *sc; switch (enc->codec_type) { case AVMEDIA_TYPE_VIDEO: - if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) { + 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); + framerate = 1 / av_q2d(s->streams[i]->codec->time_base); } video_enc = enc; - if(enc->codec_tag == 0) { + if (enc->codec_tag == 0) { av_log(s, AV_LOG_ERROR, "video codec not compatible with flv\n"); return -1; } @@ -224,32 +230,32 @@ static int flv_write_header(AVFormatContext *s) 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 * !!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; + 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, 0); // timestamp + avio_wb32(pb, 0); // reserved /* now data of data_size size */ @@ -262,16 +268,18 @@ static int flv_write_header(AVFormatContext *s) metadata_count_pos = avio_tell(pb); metadata_count = 5 * !!video_enc + 5 * !!audio_enc + - 1 * !!data_enc + + 1 * !!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 - if(video_enc){ + // fill in the guessed duration, it'll be corrected later if incorrect + put_amf_double(pb, s->duration / AV_TIME_BASE); + + if (video_enc) { put_amf_string(pb, "width"); put_amf_double(pb, video_enc->width); @@ -288,7 +296,7 @@ static int flv_write_header(AVFormatContext *s) put_amf_double(pb, video_enc->codec_tag); } - if(audio_enc){ + if (audio_enc) { put_amf_string(pb, "audiodatarate"); put_amf_double(pb, audio_enc->bit_rate / 1024.0); @@ -318,14 +326,14 @@ static int flv_write_header(AVFormatContext *s) } 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); @@ -340,10 +348,10 @@ static int flv_write_header(AVFormatContext *s) 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); + 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) { @@ -380,9 +388,8 @@ static int flv_write_trailer(AVFormatContext *s) 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 == CODEC_ID_H264) put_avc_eos_tag(pb, sc->last_ts); - } } file_size = avio_tell(pb); @@ -399,32 +406,35 @@ static int flv_write_trailer(AVFormatContext *s) 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 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); + // 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; + 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; + flags_size = 1; switch (enc->codec_type) { case AVMEDIA_TYPE_VIDEO: avio_w8(pb, FLV_TAG_TYPE_VIDEO); flags = enc->codec_tag; - if(flags == 0) { - av_log(s, AV_LOG_ERROR, "video codec %X not compatible with flv\n",enc->codec_id); + if (flags == 0) { + av_log(s, AV_LOG_ERROR, + "video codec %X not compatible with flv\n", + enc->codec_id); return -1; } @@ -437,44 +447,43 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) 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) { + + if (enc->codec_id == CODEC_ID_H264) /* check if extradata looks like MP4 */ - if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1) { + 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 == 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"); + 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 /* check Speex packet duration */ - if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 160) { + 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_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 (enc->codec_type == AVMEDIA_TYPE_DATA) { int data_size; @@ -498,25 +507,26 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) avio_seek(pb, data_size + 10 - 3, SEEK_CUR); avio_wb32(pb, data_size + 11); } else { - 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_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_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_wb32(pb, size + flags_size + 11); // previous tag size + flv->duration = FFMAX(flv->duration, + pkt->pts + flv->delay + pkt->duration); } - avio_flush(pb); + avio_flush(pb); av_free(data); return pb->error; @@ -537,9 +547,9 @@ AVOutputFormat ff_flv_muxer = { .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 - }, + .codec_tag = (const AVCodecTag* const []) { + flv_video_codec_ids, flv_audio_codec_ids, 0 + }, .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT, }; |