diff options
Diffstat (limited to 'libavformat/mpegenc.c')
-rw-r--r-- | libavformat/mpegenc.c | 640 |
1 files changed, 331 insertions, 309 deletions
diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c index 5521f48cee..4069e425be 100644 --- a/libavformat/mpegenc.c +++ b/libavformat/mpegenc.c @@ -26,7 +26,9 @@ #include "libavutil/log.h" #include "libavutil/mathematics.h" #include "libavutil/opt.h" + #include "libavcodec/put_bits.h" + #include "avformat.h" #include "internal.h" #include "mpeg.h" @@ -79,7 +81,7 @@ typedef struct { int is_dvd; int64_t last_scr; /* current system clock */ - double vcd_padding_bitrate; //FIXME floats + double vcd_padding_bitrate; // FIXME floats int64_t vcd_padding_bytes_written; int preload; @@ -90,8 +92,8 @@ extern AVOutputFormat ff_mpeg2dvd_muxer; extern AVOutputFormat ff_mpeg2svcd_muxer; extern AVOutputFormat ff_mpeg2vob_muxer; -static int put_pack_header(AVFormatContext *ctx, - uint8_t *buf, int64_t timestamp) +static int put_pack_header(AVFormatContext *ctx, uint8_t *buf, + int64_t timestamp) { MpegMuxContext *s = ctx->priv_data; PutBitContext pb; @@ -99,21 +101,19 @@ static int put_pack_header(AVFormatContext *ctx, init_put_bits(&pb, buf, 128); put_bits32(&pb, PACK_START_CODE); - if (s->is_mpeg2) { + if (s->is_mpeg2) put_bits(&pb, 2, 0x1); - } else { + else put_bits(&pb, 4, 0x2); - } - put_bits(&pb, 3, (uint32_t)((timestamp >> 30) & 0x07)); - put_bits(&pb, 1, 1); + put_bits(&pb, 3, (uint32_t)((timestamp >> 30) & 0x07)); + put_bits(&pb, 1, 1); put_bits(&pb, 15, (uint32_t)((timestamp >> 15) & 0x7fff)); - put_bits(&pb, 1, 1); - put_bits(&pb, 15, (uint32_t)((timestamp ) & 0x7fff)); - put_bits(&pb, 1, 1); - if (s->is_mpeg2) { + put_bits(&pb, 1, 1); + put_bits(&pb, 15, (uint32_t)((timestamp) & 0x7fff)); + put_bits(&pb, 1, 1); + if (s->is_mpeg2) /* clock extension */ put_bits(&pb, 9, 0); - } put_bits(&pb, 1, 1); put_bits(&pb, 22, s->mux_rate); put_bits(&pb, 1, 1); @@ -126,7 +126,8 @@ static int put_pack_header(AVFormatContext *ctx, return put_bits_ptr(&pb) - pb.buf; } -static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_stream_id) +static int put_system_header(AVFormatContext *ctx, uint8_t *buf, + int only_for_stream_id) { MpegMuxContext *s = ctx->priv_data; int size, i, private_stream_coded, id; @@ -138,20 +139,22 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str put_bits(&pb, 16, 0); put_bits(&pb, 1, 1); - put_bits(&pb, 22, s->mux_rate); /* maximum bit rate of the multiplexed stream */ + /* maximum bit rate of the multiplexed stream */ + put_bits(&pb, 22, s->mux_rate); put_bits(&pb, 1, 1); /* marker */ - if (s->is_vcd && only_for_stream_id==VIDEO_ID) { - /* This header applies only to the video stream (see VCD standard p. IV-7)*/ + if (s->is_vcd && only_for_stream_id == VIDEO_ID) { + /* This header applies only to the video stream + * (see VCD standard p. IV-7) */ put_bits(&pb, 6, 0); } else put_bits(&pb, 6, s->audio_bound); if (s->is_vcd) { - /* see VCD standard, p. IV-7*/ + /* see VCD standard, p. IV-7 */ put_bits(&pb, 1, 0); put_bits(&pb, 1, 1); } else { - put_bits(&pb, 1, 0); /* variable bitrate*/ + put_bits(&pb, 1, 0); /* variable bitrate */ put_bits(&pb, 1, 0); /* non constrainted bit stream */ } @@ -167,7 +170,8 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str put_bits(&pb, 1, 1); /* marker */ if (s->is_vcd && (only_for_stream_id & 0xe0) == AUDIO_ID) { - /* This header applies only to the audio stream (see VCD standard p. IV-7)*/ + /* This header applies only to the audio stream + * (see VCD standard p. IV-7) */ put_bits(&pb, 5, 0); } else put_bits(&pb, 5, s->video_bound); @@ -179,25 +183,27 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str put_bits(&pb, 8, 0xff); /* reserved byte */ /* DVD-Video Stream_bound entries - id (0xB9) video, maximum P-STD for stream 0xE0. (P-STD_buffer_bound_scale = 1) - id (0xB8) audio, maximum P-STD for any MPEG audio (0xC0 to 0xC7) streams. If there are none set to 4096 (32x128). (P-STD_buffer_bound_scale = 0) - id (0xBD) private stream 1 (audio other than MPEG and subpictures). (P-STD_buffer_bound_scale = 1) - id (0xBF) private stream 2, NAV packs, set to 2x1024. */ + * id (0xB9) video, maximum P-STD for stream 0xE0. (P-STD_buffer_bound_scale = 1) + * id (0xB8) audio, maximum P-STD for any MPEG audio (0xC0 to 0xC7) streams. If there are none set to 4096 (32x128). (P-STD_buffer_bound_scale = 0) + * id (0xBD) private stream 1 (audio other than MPEG and subpictures). (P-STD_buffer_bound_scale = 1) + * id (0xBF) private stream 2, NAV packs, set to 2x1024. */ if (s->is_dvd) { int P_STD_max_video = 0; int P_STD_max_mpeg_audio = 0; int P_STD_max_mpeg_PS1 = 0; - for(i=0;i<ctx->nb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { StreamInfo *stream = ctx->streams[i]->priv_data; id = stream->id; if (id == 0xbd && stream->max_buffer_size > P_STD_max_mpeg_PS1) { P_STD_max_mpeg_PS1 = stream->max_buffer_size; - } else if (id >= 0xc0 && id <= 0xc7 && stream->max_buffer_size > P_STD_max_mpeg_audio) { + } else if (id >= 0xc0 && id <= 0xc7 && + stream->max_buffer_size > P_STD_max_mpeg_audio) { P_STD_max_mpeg_audio = stream->max_buffer_size; - } else if (id == 0xe0 && stream->max_buffer_size > P_STD_max_video) { + } else if (id == 0xe0 && + stream->max_buffer_size > P_STD_max_video) { P_STD_max_video = stream->max_buffer_size; } } @@ -227,20 +233,17 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str put_bits(&pb, 2, 3); put_bits(&pb, 1, 1); put_bits(&pb, 13, 2); - } - else { + } else { /* audio stream info */ private_stream_coded = 0; - for(i=0;i<ctx->nb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { StreamInfo *stream = ctx->streams[i]->priv_data; - /* For VCDs, only include the stream info for the stream - that the pack which contains this system belongs to. - (see VCD standard p. IV-7) */ - if ( !s->is_vcd || stream->id==only_for_stream_id - || only_for_stream_id==0) { - + * that the pack which contains this system belongs to. + * (see VCD standard p. IV-7) */ + if (!s->is_vcd || stream->id == only_for_stream_id || + only_for_stream_id == 0) { id = stream->id; if (id < 0xc0) { /* special case for private streams (AC-3 uses that) */ @@ -249,7 +252,7 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str private_stream_coded = 1; id = 0xbd; } - put_bits(&pb, 8, id); /* stream ID */ + put_bits(&pb, 8, id); /* stream ID */ put_bits(&pb, 2, 3); if (id < 0xe0) { /* audio */ @@ -279,11 +282,11 @@ static int get_system_header_size(AVFormatContext *ctx) MpegMuxContext *s = ctx->priv_data; if (s->is_dvd) - return 18; // DVD-Video system headers are 18 bytes fixed length. + return 18; // DVD-Video system headers are 18 bytes fixed length. buf_index = 12; private_stream_coded = 0; - for(i=0;i<ctx->nb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { stream = ctx->streams[i]->priv_data; if (stream->id < 0xc0) { if (private_stream_coded) @@ -305,14 +308,14 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) int video_bitrate; s->packet_number = 0; - s->is_vcd = (CONFIG_MPEG1VCD_MUXER && ctx->oformat == &ff_mpeg1vcd_muxer); - s->is_svcd = (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer); + s->is_vcd = (CONFIG_MPEG1VCD_MUXER && ctx->oformat == &ff_mpeg1vcd_muxer); + s->is_svcd = (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer); s->is_mpeg2 = ((CONFIG_MPEG2VOB_MUXER && ctx->oformat == &ff_mpeg2vob_muxer) || (CONFIG_MPEG2DVD_MUXER && ctx->oformat == &ff_mpeg2dvd_muxer) || (CONFIG_MPEG2SVCD_MUXER && ctx->oformat == &ff_mpeg2svcd_muxer)); - s->is_dvd = (CONFIG_MPEG2DVD_MUXER && ctx->oformat == &ff_mpeg2dvd_muxer); + s->is_dvd = (CONFIG_MPEG2DVD_MUXER && ctx->oformat == &ff_mpeg2dvd_muxer); - if(ctx->packet_size) { + if (ctx->packet_size) { if (ctx->packet_size < 20 || ctx->packet_size > (1 << 23) + 10) { av_log(ctx, AV_LOG_ERROR, "Invalid packet size %d\n", ctx->packet_size); @@ -321,22 +324,24 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) s->packet_size = ctx->packet_size; } else s->packet_size = 2048; - if (ctx->max_delay < 0) /* Not set by the caller */ + if (ctx->max_delay < 0) /* Not set by the caller */ ctx->max_delay = 0.7*AV_TIME_BASE; s->vcd_padding_bytes_written = 0; - s->vcd_padding_bitrate=0; + s->vcd_padding_bitrate = 0; s->audio_bound = 0; s->video_bound = 0; - mpa_id = AUDIO_ID; - ac3_id = AC3_ID; - dts_id = DTS_ID; - mpv_id = VIDEO_ID; - mps_id = SUB_ID; + + mpa_id = AUDIO_ID; + ac3_id = AC3_ID; + dts_id = DTS_ID; + mpv_id = VIDEO_ID; + mps_id = SUB_ID; lpcm_id = LPCM_ID; - for(i=0;i<ctx->nb_streams;i++) { - st = ctx->streams[i]; + + for (i = 0; i < ctx->nb_streams; i++) { + st = ctx->streams[i]; stream = av_mallocz(sizeof(StreamInfo)); if (!stream) goto fail; @@ -344,7 +349,7 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) avpriv_set_pts_info(st, 64, 1, 90000); - switch(st->codec->codec_type) { + switch (st->codec->codec_type) { case AVMEDIA_TYPE_AUDIO: if (!s->is_mpeg2 && (st->codec->codec_id == AV_CODEC_ID_AC3 || @@ -355,13 +360,13 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) "consider using the vob or the dvd muxer " "to force a MPEG-2 program stream.\n", avcodec_get_name(st->codec->codec_id)); - if (st->codec->codec_id == AV_CODEC_ID_AC3) { + if (st->codec->codec_id == AV_CODEC_ID_AC3) { stream->id = ac3_id++; } else if (st->codec->codec_id == AV_CODEC_ID_DTS) { stream->id = dts_id++; } else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) { stream->id = lpcm_id++; - for(j = 0; j < 4; j++) { + for (j = 0; j < 4; j++) { if (lpcm_freq_tab[j] == st->codec->sample_rate) break; } @@ -372,25 +377,27 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) stream->lpcm_header[0] = 0x0c; stream->lpcm_header[1] = (st->codec->channels - 1) | (j << 4); stream->lpcm_header[2] = 0x80; - stream->lpcm_align = st->codec->channels * 2; + stream->lpcm_align = st->codec->channels * 2; } else { stream->id = mpa_id++; } /* This value HAS to be used for VCD (see VCD standard, p. IV-7). - Right now it is also used for everything else.*/ + * Right now it is also used for everything else. */ stream->max_buffer_size = 4 * 1024; s->audio_bound++; break; case AVMEDIA_TYPE_VIDEO: stream->id = mpv_id++; if (st->codec->rc_buffer_size) - stream->max_buffer_size = 6*1024 + st->codec->rc_buffer_size/8; + stream->max_buffer_size = 6 * 1024 + st->codec->rc_buffer_size / 8; else { - av_log(ctx, AV_LOG_WARNING, "VBV buffer size not set, using default size of 130KB\n" - "If you want the mpeg file to be compliant to some specification\n" - "Like DVD, VCD or others, make sure you set the correct buffer size\n"); - stream->max_buffer_size = 230*1024; //FIXME this is probably too small as default + av_log(ctx, AV_LOG_WARNING, + "VBV buffer size not set, using default size of 130KB\n" + "If you want the mpeg file to be compliant to some specification\n" + "Like DVD, VCD or others, make sure you set the correct buffer size\n"); + // FIXME: this is probably too small as default + stream->max_buffer_size = 230 * 1024; } if (stream->max_buffer_size > 1024 * 8191) { av_log(ctx, AV_LOG_WARNING, "buffer size %d, too large\n", stream->max_buffer_size); @@ -399,37 +406,37 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) s->video_bound++; break; case AVMEDIA_TYPE_SUBTITLE: - stream->id = mps_id++; + stream->id = mps_id++; stream->max_buffer_size = 16 * 1024; break; default: return -1; } - stream->fifo= av_fifo_alloc(16); + stream->fifo = av_fifo_alloc(16); if (!stream->fifo) goto fail; } - bitrate = 0; + bitrate = 0; audio_bitrate = 0; video_bitrate = 0; - for(i=0;i<ctx->nb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { int codec_rate; - st = ctx->streams[i]; - stream = (StreamInfo*) st->priv_data; + st = ctx->streams[i]; + stream = (StreamInfo *)st->priv_data; - if(st->codec->rc_max_rate || stream->id==VIDEO_ID) - codec_rate= st->codec->rc_max_rate; + if (st->codec->rc_max_rate || stream->id == VIDEO_ID) + codec_rate = st->codec->rc_max_rate; else - codec_rate= st->codec->bit_rate; + codec_rate = st->codec->bit_rate; - if(!codec_rate) - codec_rate= (1<<21)*8*50/ctx->nb_streams; + if (!codec_rate) + codec_rate = (1 << 21) * 8 * 50 / ctx->nb_streams; bitrate += codec_rate; if ((stream->id & 0xe0) == AUDIO_ID) audio_bitrate += codec_rate; - else if (stream->id==VIDEO_ID) + else if (stream->id == VIDEO_ID) video_bitrate += codec_rate; } @@ -437,9 +444,9 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) s->mux_rate = (s->user_mux_rate + (8 * 50) - 1) / (8 * 50); } else { /* we increase slightly the bitrate to take into account the - headers. XXX: compute it exactly */ - bitrate += bitrate / 20; - bitrate += 10000; + * headers. XXX: compute it exactly */ + bitrate += bitrate / 20; + bitrate += 10000; s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50); if (s->mux_rate >= (1<<22)) { av_log(ctx, AV_LOG_WARNING, "mux rate %d is too large\n", s->mux_rate); @@ -451,23 +458,23 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) double overhead_rate; /* The VCD standard mandates that the mux_rate field is 3528 - (see standard p. IV-6). - The value is actually "wrong", i.e. if you calculate - it using the normal formula and the 75 sectors per second transfer - rate you get a different value because the real pack size is 2324, - not 2352. But the standard explicitly specifies that the mux_rate - field in the header must have this value.*/ -// s->mux_rate=2352 * 75 / 50; /* = 3528*/ + * (see standard p. IV-6). + * The value is actually "wrong", i.e. if you calculate + * it using the normal formula and the 75 sectors per second transfer + * rate you get a different value because the real pack size is 2324, + * not 2352. But the standard explicitly specifies that the mux_rate + * field in the header must have this value. */ + // s->mux_rate = 2352 * 75 / 50; /* = 3528 */ /* The VCD standard states that the muxed stream must be - exactly 75 packs / second (the data rate of a single speed cdrom). - Since the video bitrate (probably 1150000 bits/sec) will be below - the theoretical maximum we have to add some padding packets - to make up for the lower data rate. - (cf. VCD standard p. IV-6 )*/ + * exactly 75 packs / second (the data rate of a single speed cdrom). + * Since the video bitrate (probably 1150000 bits/sec) will be below + * the theoretical maximum we have to add some padding packets + * to make up for the lower data rate. + * (cf. VCD standard p. IV-6 ) */ /* Add the header overhead to the data rate. - 2279 data bytes per audio pack, 2294 data bytes per video pack*/ + * 2279 data bytes per audio pack, 2294 data bytes per video pack */ overhead_rate = ((audio_bitrate / 8.0) / 2279) * (2324 - 2279); overhead_rate += ((video_bitrate / 8.0) / 2294) * (2324 - 2294); overhead_rate *= 8; @@ -485,70 +492,67 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx) /* the above seems to make pack_header_freq zero sometimes */ if (s->pack_header_freq == 0) - s->pack_header_freq = 1; + s->pack_header_freq = 1; if (s->is_mpeg2) /* every 200 packets. Need to look at the spec. */ s->system_header_freq = s->pack_header_freq * 40; else if (s->is_vcd) /* the standard mandates that there are only two system headers - in the whole file: one in the first packet of each stream. - (see standard p. IV-7 and IV-8) */ + * in the whole file: one in the first packet of each stream. + * (see standard p. IV-7 and IV-8) */ s->system_header_freq = 0x7fffffff; else s->system_header_freq = s->pack_header_freq * 5; - for(i=0;i<ctx->nb_streams;i++) { - stream = ctx->streams[i]->priv_data; + for (i = 0; i < ctx->nb_streams; i++) { + stream = ctx->streams[i]->priv_data; stream->packet_number = 0; } s->system_header_size = get_system_header_size(ctx); - s->last_scr = AV_NOPTS_VALUE; + s->last_scr = AV_NOPTS_VALUE; return 0; - fail: - for(i=0;i<ctx->nb_streams;i++) { + +fail: + for (i = 0; i < ctx->nb_streams; i++) av_free(ctx->streams[i]->priv_data); - } return AVERROR(ENOMEM); } static inline void put_timestamp(AVIOContext *pb, int id, int64_t timestamp) { - avio_w8(pb, - (id << 4) | - (((timestamp >> 30) & 0x07) << 1) | - 1); + avio_w8(pb, (id << 4) | (((timestamp >> 30) & 0x07) << 1) | 1); avio_wb16(pb, (uint16_t)((((timestamp >> 15) & 0x7fff) << 1) | 1)); - avio_wb16(pb, (uint16_t)((((timestamp ) & 0x7fff) << 1) | 1)); + avio_wb16(pb, (uint16_t)((((timestamp) & 0x7fff) << 1) | 1)); } - /* return the number of padding bytes that should be inserted into - the multiplexed stream.*/ + * the multiplexed stream. */ static int get_vcd_padding_size(AVFormatContext *ctx, int64_t pts) { MpegMuxContext *s = ctx->priv_data; int pad_bytes = 0; - if (s->vcd_padding_bitrate > 0 && pts!=AV_NOPTS_VALUE) - { + if (s->vcd_padding_bitrate > 0 && pts != AV_NOPTS_VALUE) { int64_t full_pad_bytes; - full_pad_bytes = (int64_t)((s->vcd_padding_bitrate * (pts / 90000.0)) / 8.0); //FIXME this is wrong - pad_bytes = (int) (full_pad_bytes - s->vcd_padding_bytes_written); + // FIXME: this is wrong + full_pad_bytes = + (int64_t)((s->vcd_padding_bitrate * (pts / 90000.0)) / 8.0); + pad_bytes = (int)(full_pad_bytes - s->vcd_padding_bytes_written); - if (pad_bytes<0) + if (pad_bytes < 0) /* might happen if we have already padded to a later timestamp. This - can occur if another stream has already advanced further.*/ - pad_bytes=0; + * can occur if another stream has already advanced further. */ + pad_bytes = 0; } return pad_bytes; } - /* Write an MPEG padding packet header. */ -static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,int packet_bytes) +static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb, + int packet_bytes) { MpegMuxContext *s = ctx->priv_data; int i; @@ -561,19 +565,20 @@ static void put_padding_packet(AVFormatContext *ctx, AVIOContext *pb,int packet_ } else packet_bytes -= 6; - for(i=0;i<packet_bytes;i++) + for (i = 0; i < packet_bytes; i++) avio_w8(pb, 0xff); } -static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len){ - int nb_frames=0; - PacketDesc *pkt_desc= stream->premux_packet; +static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len) +{ + int nb_frames = 0; + PacketDesc *pkt_desc = stream->premux_packet; - while(len>0){ - if(pkt_desc->size == pkt_desc->unwritten_size) + while (len > 0) { + if (pkt_desc->size == pkt_desc->unwritten_size) nb_frames++; - len -= pkt_desc->unwritten_size; - pkt_desc= pkt_desc->next; + len -= pkt_desc->unwritten_size; + pkt_desc = pkt_desc->next; } return nb_frames; @@ -581,9 +586,9 @@ static int get_nb_frames(AVFormatContext *ctx, StreamInfo *stream, int len){ /* flush the packet on stream stream_index */ static int flush_packet(AVFormatContext *ctx, int stream_index, - int64_t pts, int64_t dts, int64_t scr, int trailer_size) + int64_t pts, int64_t dts, int64_t scr, int trailer_size) { - MpegMuxContext *s = ctx->priv_data; + MpegMuxContext *s = ctx->priv_data; StreamInfo *stream = ctx->streams[stream_index]->priv_data; uint8_t *buf_ptr; int size, payload_size, startcode, id, stuffing_size, i, header_len; @@ -592,7 +597,8 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, int zero_trail_bytes = 0; int pad_packet_bytes = 0; int pes_flags; - int general_pack = 0; /*"general" pack without data specific to one stream?*/ + /* "general" pack without data specific to one stream? */ + int general_pack = 0; int nb_frames; id = stream->id; @@ -603,21 +609,21 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, if ((s->packet_number % s->pack_header_freq) == 0 || s->last_scr != scr) { /* output pack and systems header if needed */ - size = put_pack_header(ctx, buf_ptr, scr); - buf_ptr += size; - s->last_scr= scr; + size = put_pack_header(ctx, buf_ptr, scr); + buf_ptr += size; + s->last_scr = scr; if (s->is_vcd) { /* there is exactly one system header for each stream in a VCD MPEG, - One in the very first video packet and one in the very first - audio packet (see VCD standard p. IV-7 and IV-8).*/ + * One in the very first video packet and one in the very first + * audio packet (see VCD standard p. IV-7 and IV-8). */ - if (stream->packet_number==0) { - size = put_system_header(ctx, buf_ptr, id); + if (stream->packet_number == 0) { + size = put_system_header(ctx, buf_ptr, id); buf_ptr += size; } } else if (s->is_dvd) { - if (stream->align_iframe || s->packet_number == 0){ + if (stream->align_iframe || s->packet_number == 0) { int PES_bytes_to_fill = s->packet_size - size - 10; if (pts != AV_NOPTS_VALUE) { @@ -628,20 +634,20 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, } if (stream->bytes_to_iframe == 0 || s->packet_number == 0) { - size = put_system_header(ctx, buf_ptr, 0); + size = put_system_header(ctx, buf_ptr, 0); buf_ptr += size; - size = buf_ptr - buffer; + size = buf_ptr - buffer; avio_write(ctx->pb, buffer, size); avio_wb32(ctx->pb, PRIVATE_STREAM_2); - avio_wb16(ctx->pb, 0x03d4); // length - avio_w8(ctx->pb, 0x00); // substream ID, 00=PCI + avio_wb16(ctx->pb, 0x03d4); // length + avio_w8(ctx->pb, 0x00); // substream ID, 00=PCI for (i = 0; i < 979; i++) avio_w8(ctx->pb, 0x00); avio_wb32(ctx->pb, PRIVATE_STREAM_2); - avio_wb16(ctx->pb, 0x03fa); // length - avio_w8(ctx->pb, 0x01); // substream ID, 01=DSI + avio_wb16(ctx->pb, 0x03fa); // length + avio_w8(ctx->pb, 0x01); // substream ID, 01=DSI for (i = 0; i < 1017; i++) avio_w8(ctx->pb, 0x00); @@ -649,18 +655,21 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, buf_ptr = buffer; s->packet_number++; stream->align_iframe = 0; - scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME rounding and first few bytes of each packet - size = put_pack_header(ctx, buf_ptr, scr); - s->last_scr= scr; - buf_ptr += size; + // FIXME: rounding and first few bytes of each packet + scr += s->packet_size * 90000LL / + (s->mux_rate * 50LL); + size = put_pack_header(ctx, buf_ptr, scr); + s->last_scr = scr; + buf_ptr += size; /* GOP Start */ } else if (stream->bytes_to_iframe < PES_bytes_to_fill) { - pad_packet_bytes = PES_bytes_to_fill - stream->bytes_to_iframe; + pad_packet_bytes = PES_bytes_to_fill - + stream->bytes_to_iframe; } } } else { if ((s->packet_number % s->system_header_freq) == 0) { - size = put_system_header(ctx, buf_ptr, 0); + size = put_system_header(ctx, buf_ptr, 0); buf_ptr += size; } } @@ -672,33 +681,33 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, if (s->is_vcd && (id & 0xe0) == AUDIO_ID) /* The VCD standard demands that 20 zero bytes follow - each audio pack (see standard p. IV-8).*/ + * each audio pack (see standard p. IV-8). */ zero_trail_bytes += 20; - if ((s->is_vcd && stream->packet_number==0) - || (s->is_svcd && s->packet_number==0)) { + if ((s->is_vcd && stream->packet_number == 0) || + (s->is_svcd && s->packet_number == 0)) { /* for VCD the first pack of each stream contains only the pack header, - the system header and lots of padding (see VCD standard p. IV-6). - In the case of an audio pack, 20 zero bytes are also added at - the end.*/ + * the system header and lots of padding (see VCD standard p. IV-6). + * In the case of an audio pack, 20 zero bytes are also added at + * the end. */ /* For SVCD we fill the very first pack to increase compatibility with - some DVD players. Not mandated by the standard.*/ + * some DVD players. Not mandated by the standard. */ if (s->is_svcd) - general_pack = 1; /* the system header refers to both streams and no stream data*/ + /* the system header refers to both streams and no stream data */ + general_pack = 1; pad_packet_bytes = packet_size - zero_trail_bytes; } packet_size -= pad_packet_bytes + zero_trail_bytes; if (packet_size > 0) { - /* packet header size */ packet_size -= 6; /* packet header */ if (s->is_mpeg2) { header_len = 3; - if (stream->packet_number==0) + if (stream->packet_number == 0) header_len += 3; /* PES extension */ header_len += 1; /* obligatory stuffing byte */ } else { @@ -716,7 +725,7 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, payload_size = packet_size - header_len; if (id < 0xc0) { - startcode = PRIVATE_STREAM_1; + startcode = PRIVATE_STREAM_1; payload_size -= 1; if (id >= 0x40) { payload_size -= 3; @@ -730,33 +739,34 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, stuffing_size = payload_size - av_fifo_size(stream->fifo); // first byte does not fit -> reset pts/dts + stuffing - if(payload_size <= trailer_size && pts != AV_NOPTS_VALUE){ - int timestamp_len=0; - if(dts != pts) + if (payload_size <= trailer_size && pts != AV_NOPTS_VALUE) { + int timestamp_len = 0; + if (dts != pts) timestamp_len += 5; - if(pts != AV_NOPTS_VALUE) + if (pts != AV_NOPTS_VALUE) timestamp_len += s->is_mpeg2 ? 5 : 4; - pts=dts= AV_NOPTS_VALUE; + pts = + dts = AV_NOPTS_VALUE; header_len -= timestamp_len; if (s->is_dvd && stream->align_iframe) { pad_packet_bytes += timestamp_len; - packet_size -= timestamp_len; + packet_size -= timestamp_len; } else { payload_size += timestamp_len; } stuffing_size += timestamp_len; - if(payload_size > trailer_size) + if (payload_size > trailer_size) stuffing_size += payload_size - trailer_size; } - if (pad_packet_bytes > 0 && pad_packet_bytes <= 7) { // can't use padding, so use stuffing - packet_size += pad_packet_bytes; + // can't use padding, so use stuffing + if (pad_packet_bytes > 0 && pad_packet_bytes <= 7) { + packet_size += pad_packet_bytes; payload_size += pad_packet_bytes; // undo the previous adjustment - if (stuffing_size < 0) { - stuffing_size = pad_packet_bytes; - } else { + if (stuffing_size < 0) + stuffing_size = pad_packet_bytes; + else stuffing_size += pad_packet_bytes; - } pad_packet_bytes = 0; } @@ -768,27 +778,27 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, stuffing_size += payload_size % stream->lpcm_align; } - if (stuffing_size > 16) { /*<=16 for MPEG-1, <=32 for MPEG-2*/ + if (stuffing_size > 16) { /* <=16 for MPEG-1, <=32 for MPEG-2 */ pad_packet_bytes += stuffing_size; packet_size -= stuffing_size; payload_size -= stuffing_size; - stuffing_size = 0; + stuffing_size = 0; } - nb_frames= get_nb_frames(ctx, stream, payload_size - stuffing_size); + nb_frames = get_nb_frames(ctx, stream, payload_size - stuffing_size); avio_wb32(ctx->pb, startcode); avio_wb16(ctx->pb, packet_size); if (!s->is_mpeg2) - for(i=0;i<stuffing_size;i++) + for (i = 0; i < stuffing_size; i++) avio_w8(ctx->pb, 0xff); if (s->is_mpeg2) { avio_w8(ctx->pb, 0x80); /* mpeg2 id */ - pes_flags=0; + pes_flags = 0; if (pts != AV_NOPTS_VALUE) { pes_flags |= 0x80; @@ -797,30 +807,29 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, } /* Both the MPEG-2 and the SVCD standards demand that the - P-STD_buffer_size field be included in the first packet of - every stream. (see SVCD standard p. 26 V.2.3.1 and V.2.3.2 - and MPEG-2 standard 2.7.7) */ + * P-STD_buffer_size field be included in the first packet of + * every stream. (see SVCD standard p. 26 V.2.3.1 and V.2.3.2 + * and MPEG-2 standard 2.7.7) */ if (stream->packet_number == 0) pes_flags |= 0x01; avio_w8(ctx->pb, pes_flags); /* flags */ avio_w8(ctx->pb, header_len - 3 + stuffing_size); - if (pes_flags & 0x80) /*write pts*/ + if (pes_flags & 0x80) /* write pts */ put_timestamp(ctx->pb, (pes_flags & 0x40) ? 0x03 : 0x02, pts); - if (pes_flags & 0x40) /*write dts*/ + if (pes_flags & 0x40) /* write dts */ put_timestamp(ctx->pb, 0x01, dts); - if (pes_flags & 0x01) { /*write pes extension*/ + if (pes_flags & 0x01) { /* write pes extension */ avio_w8(ctx->pb, 0x10); /* flags */ /* P-STD buffer info */ if ((id & 0xe0) == AUDIO_ID) - avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size/ 128); + avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size / 128); else - avio_wb16(ctx->pb, 0x6000 | stream->max_buffer_size/1024); + avio_wb16(ctx->pb, 0x6000 | stream->max_buffer_size / 1024); } - } else { if (pts != AV_NOPTS_VALUE) { if (dts != pts) { @@ -836,10 +845,10 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, if (s->is_mpeg2) { /* special stuffing byte that is always written - to prevent accidental generation of start codes. */ + * to prevent accidental generation of start codes. */ avio_w8(ctx->pb, 0xff); - for(i=0;i<stuffing_size;i++) + for (i = 0; i < stuffing_size; i++) avio_w8(ctx->pb, 0xff); } @@ -855,23 +864,24 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, } else if (id >= 0x40) { /* AC-3 */ avio_w8(ctx->pb, nb_frames); - avio_wb16(ctx->pb, trailer_size+1); + avio_wb16(ctx->pb, trailer_size + 1); } } /* output data */ assert(payload_size - stuffing_size <= av_fifo_size(stream->fifo)); - av_fifo_generic_read(stream->fifo, ctx->pb, payload_size - stuffing_size, (void*)avio_write); + av_fifo_generic_read(stream->fifo, ctx->pb, + payload_size - stuffing_size, (void*)avio_write); stream->bytes_to_iframe -= payload_size - stuffing_size; - }else{ - payload_size= - stuffing_size= 0; + } else { + payload_size = + stuffing_size = 0; } if (pad_packet_bytes > 0) - put_padding_packet(ctx,ctx->pb, pad_packet_bytes); + put_padding_packet(ctx, ctx->pb, pad_packet_bytes); - for(i=0;i<zero_trail_bytes;i++) + for (i = 0; i < zero_trail_bytes; i++) avio_w8(ctx->pb, 0x00); avio_flush(ctx->pb); @@ -879,8 +889,8 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, s->packet_number++; /* only increase the stream packet number if this pack actually contains - something that is specific to this stream! I.e. a dedicated header - or some data.*/ + * something that is specific to this stream! I.e. a dedicated header + * or some data. */ if (!general_pack) stream->packet_number++; @@ -890,15 +900,15 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, static void put_vcd_padding_sector(AVFormatContext *ctx) { /* There are two ways to do this padding: writing a sector/pack - of 0 values, or writing an MPEG padding pack. Both seem to - work with most decoders, BUT the VCD standard only allows a 0-sector - (see standard p. IV-4, IV-5). - So a 0-sector it is...*/ + * of 0 values, or writing an MPEG padding pack. Both seem to + * work with most decoders, BUT the VCD standard only allows a 0-sector + * (see standard p. IV-4, IV-5). + * So a 0-sector it is... */ MpegMuxContext *s = ctx->priv_data; int i; - for(i=0;i<s->packet_size;i++) + for (i = 0; i < s->packet_size; i++) avio_w8(ctx->pb, 0); s->vcd_padding_bytes_written += s->packet_size; @@ -906,33 +916,32 @@ static void put_vcd_padding_sector(AVFormatContext *ctx) avio_flush(ctx->pb); /* increasing the packet number is correct. The SCR of the following packs - is calculated from the packet_number and it has to include the padding - sector (it represents the sector index, not the MPEG pack index) - (see VCD standard p. IV-6)*/ + * is calculated from the packet_number and it has to include the padding + * sector (it represents the sector index, not the MPEG pack index) + * (see VCD standard p. IV-6) */ s->packet_number++; } -static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){ -// MpegMuxContext *s = ctx->priv_data; +static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr) +{ int i; - for(i=0; i<ctx->nb_streams; i++){ + for (i = 0; i < ctx->nb_streams; i++) { AVStream *st = ctx->streams[i]; StreamInfo *stream = st->priv_data; PacketDesc *pkt_desc; - while((pkt_desc= stream->predecode_packet) - && scr > pkt_desc->dts){ //FIXME > vs >= - if(stream->buffer_index < pkt_desc->size || - stream->predecode_packet == stream->premux_packet){ + while ((pkt_desc = stream->predecode_packet) && + scr > pkt_desc->dts) { // FIXME: > vs >= + if (stream->buffer_index < pkt_desc->size || + stream->predecode_packet == stream->premux_packet) { av_log(ctx, AV_LOG_ERROR, "buffer underflow st=%d bufi=%d size=%d\n", i, stream->buffer_index, pkt_desc->size); break; } - stream->buffer_index -= pkt_desc->size; - - stream->predecode_packet= pkt_desc->next; + stream->buffer_index -= pkt_desc->size; + stream->predecode_packet = pkt_desc->next; av_freep(&pkt_desc); } } @@ -940,127 +949,135 @@ static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){ return 0; } -static int output_packet(AVFormatContext *ctx, int flush){ +static int output_packet(AVFormatContext *ctx, int flush) +{ MpegMuxContext *s = ctx->priv_data; AVStream *st; StreamInfo *stream; - int i, avail_space=0, es_size, trailer_size; - int best_i= -1; - int best_score= INT_MIN; - int ignore_constraints=0; - int64_t scr= s->last_scr; + int i, avail_space = 0, es_size, trailer_size; + int best_i = -1; + int best_score = INT_MIN; + int ignore_constraints = 0; + int64_t scr = s->last_scr; PacketDesc *timestamp_packet; - const int64_t max_delay= av_rescale(ctx->max_delay, 90000, AV_TIME_BASE); + const int64_t max_delay = av_rescale(ctx->max_delay, 90000, AV_TIME_BASE); retry: - for(i=0; i<ctx->nb_streams; i++){ + for (i = 0; i < ctx->nb_streams; i++) { AVStream *st = ctx->streams[i]; StreamInfo *stream = st->priv_data; - const int avail_data= av_fifo_size(stream->fifo); - const int space= stream->max_buffer_size - stream->buffer_index; - int rel_space= 1024LL*space / stream->max_buffer_size; - PacketDesc *next_pkt= stream->premux_packet; + const int avail_data = av_fifo_size(stream->fifo); + const int space = stream->max_buffer_size - stream->buffer_index; + int rel_space = 1024LL * space / stream->max_buffer_size; + PacketDesc *next_pkt = stream->premux_packet; /* for subtitle, a single PES packet must be generated, - so we flush after every single subtitle packet */ - if(s->packet_size > avail_data && !flush - && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) + * so we flush after every single subtitle packet */ + if (s->packet_size > avail_data && !flush + && st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) return 0; - if(avail_data==0) + if (avail_data == 0) continue; - av_assert0(avail_data>0); + av_assert0(avail_data > 0); - if(space < s->packet_size && !ignore_constraints) + if (space < s->packet_size && !ignore_constraints) continue; - if(next_pkt && next_pkt->dts - scr > max_delay) + if (next_pkt && next_pkt->dts - scr > max_delay) continue; if ( stream->predecode_packet && stream->predecode_packet->size > stream->buffer_index) rel_space += 1<<28; - if(rel_space > best_score){ - best_score= rel_space; - best_i = i; - avail_space= space; + if (rel_space > best_score) { + best_score = rel_space; + best_i = i; + avail_space = space; } } - if(best_i < 0){ - int64_t best_dts= INT64_MAX; + if (best_i < 0) { + int64_t best_dts = INT64_MAX; - for(i=0; i<ctx->nb_streams; i++){ + for (i = 0; i < ctx->nb_streams; i++) { AVStream *st = ctx->streams[i]; StreamInfo *stream = st->priv_data; - PacketDesc *pkt_desc= stream->predecode_packet; - if(pkt_desc && pkt_desc->dts < best_dts) - best_dts= pkt_desc->dts; + PacketDesc *pkt_desc = stream->predecode_packet; + if (pkt_desc && pkt_desc->dts < best_dts) + best_dts = pkt_desc->dts; } av_dlog(ctx, "bumping scr, scr:%f, dts:%f\n", scr / 90000.0, best_dts / 90000.0); - if(best_dts == INT64_MAX) + if (best_dts == INT64_MAX) return 0; - if(scr >= best_dts+1 && !ignore_constraints){ - av_log(ctx, AV_LOG_ERROR, "packet too large, ignoring buffer limits to mux it\n"); - ignore_constraints= 1; + if (scr >= best_dts + 1 && !ignore_constraints) { + av_log(ctx, AV_LOG_ERROR, + "packet too large, ignoring buffer limits to mux it\n"); + ignore_constraints = 1; } - scr= FFMAX(best_dts+1, scr); - if(remove_decoded_packets(ctx, scr) < 0) + scr = FFMAX(best_dts + 1, scr); + if (remove_decoded_packets(ctx, scr) < 0) return -1; goto retry; } assert(best_i >= 0); - st = ctx->streams[best_i]; + st = ctx->streams[best_i]; stream = st->priv_data; assert(av_fifo_size(stream->fifo) > 0); assert(avail_space >= s->packet_size || ignore_constraints); - timestamp_packet= stream->premux_packet; - if(timestamp_packet->unwritten_size == timestamp_packet->size){ - trailer_size= 0; - }else{ - trailer_size= timestamp_packet->unwritten_size; - timestamp_packet= timestamp_packet->next; + timestamp_packet = stream->premux_packet; + if (timestamp_packet->unwritten_size == timestamp_packet->size) { + trailer_size = 0; + } else { + trailer_size = timestamp_packet->unwritten_size; + timestamp_packet = timestamp_packet->next; } - if(timestamp_packet){ + if (timestamp_packet) { av_dlog(ctx, "dts:%f pts:%f scr:%f stream:%d\n", timestamp_packet->dts / 90000.0, timestamp_packet->pts / 90000.0, scr / 90000.0, best_i); - es_size= flush_packet(ctx, best_i, timestamp_packet->pts, timestamp_packet->dts, scr, trailer_size); - }else{ + es_size = flush_packet(ctx, best_i, timestamp_packet->pts, + timestamp_packet->dts, scr, trailer_size); + } else { assert(av_fifo_size(stream->fifo) == trailer_size); - es_size= flush_packet(ctx, best_i, AV_NOPTS_VALUE, AV_NOPTS_VALUE, scr, trailer_size); + es_size = flush_packet(ctx, best_i, AV_NOPTS_VALUE, AV_NOPTS_VALUE, scr, + trailer_size); } if (s->is_vcd) { /* Write one or more padding sectors, if necessary, to reach - the constant overall bitrate.*/ + * the constant overall bitrate. */ int vcd_pad_bytes; - while((vcd_pad_bytes = get_vcd_padding_size(ctx,stream->premux_packet->pts) ) >= s->packet_size){ //FIXME pts cannot be correct here + // FIXME: pts cannot be correct here + while ((vcd_pad_bytes = get_vcd_padding_size(ctx, stream->premux_packet->pts)) >= s->packet_size) { put_vcd_padding_sector(ctx); - s->last_scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME rounding and first few bytes of each packet + // FIXME: rounding and first few bytes of each packet + s->last_scr += s->packet_size * 90000LL / (s->mux_rate * 50LL); } } stream->buffer_index += es_size; - s->last_scr += s->packet_size*90000LL / (s->mux_rate*50LL); //FIXME rounding and first few bytes of each packet + // FIXME: rounding and first few bytes of each packet + s->last_scr += s->packet_size * 90000LL / (s->mux_rate * 50LL); - while(stream->premux_packet && stream->premux_packet->unwritten_size <= es_size){ - es_size -= stream->premux_packet->unwritten_size; - stream->premux_packet= stream->premux_packet->next; + while (stream->premux_packet && + stream->premux_packet->unwritten_size <= es_size) { + es_size -= stream->premux_packet->unwritten_size; + stream->premux_packet = stream->premux_packet->next; } - if(es_size) + if (es_size) stream->premux_packet->unwritten_size -= es_size; - if(remove_decoded_packets(ctx, s->last_scr) < 0) + if (remove_decoded_packets(ctx, s->last_scr) < 0) return -1; return 1; @@ -1068,21 +1085,22 @@ retry: static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt) { + int stream_index = pkt->stream_index; + int size = pkt->size; + uint8_t *buf = pkt->data; MpegMuxContext *s = ctx->priv_data; - int stream_index= pkt->stream_index; - int size= pkt->size; - uint8_t *buf= pkt->data; - AVStream *st = ctx->streams[stream_index]; + AVStream *st = ctx->streams[stream_index]; StreamInfo *stream = st->priv_data; int64_t pts, dts; PacketDesc *pkt_desc; int preload; - const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (pkt->flags & AV_PKT_FLAG_KEY); + const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && + (pkt->flags & AV_PKT_FLAG_KEY); preload = av_rescale(s->preload, 90000, AV_TIME_BASE); - pts= pkt->pts; - dts= pkt->dts; + pts = pkt->pts; + dts = pkt->dts; if (s->last_scr == AV_NOPTS_VALUE) { if (dts == AV_NOPTS_VALUE || (dts < preload && ctx->avoid_negative_ts) || s->is_dvd) { @@ -1105,57 +1123,59 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt) pkt->stream_index, pts != AV_NOPTS_VALUE); if (!stream->premux_packet) stream->next_packet = &stream->premux_packet; - *stream->next_packet= - pkt_desc= av_mallocz(sizeof(PacketDesc)); - pkt_desc->pts= pts; - pkt_desc->dts= dts; - pkt_desc->unwritten_size= - pkt_desc->size= size; - if(!stream->predecode_packet) - stream->predecode_packet= pkt_desc; - stream->next_packet= &pkt_desc->next; + *stream->next_packet = + pkt_desc = av_mallocz(sizeof(PacketDesc)); + pkt_desc->pts = pts; + pkt_desc->dts = dts; + pkt_desc->unwritten_size = + pkt_desc->size = size; + if (!stream->predecode_packet) + stream->predecode_packet = pkt_desc; + stream->next_packet = &pkt_desc->next; if (av_fifo_realloc2(stream->fifo, av_fifo_size(stream->fifo) + size) < 0) return -1; - if (s->is_dvd){ - if (is_iframe && (s->packet_number == 0 || (pts - stream->vobu_start_pts >= 36000))) { // min VOBU length 0.4 seconds (mpucoder) + if (s->is_dvd) { + // min VOBU length 0.4 seconds (mpucoder) + if (is_iframe && + (s->packet_number == 0 || + (pts - stream->vobu_start_pts >= 36000))) { stream->bytes_to_iframe = av_fifo_size(stream->fifo); - stream->align_iframe = 1; - stream->vobu_start_pts = pts; + stream->align_iframe = 1; + stream->vobu_start_pts = pts; } } av_fifo_generic_write(stream->fifo, buf, size, NULL); - for(;;){ - int ret= output_packet(ctx, 0); - if(ret<=0) + for (;;) { + int ret = output_packet(ctx, 0); + if (ret <= 0) return ret; } } static int mpeg_mux_end(AVFormatContext *ctx) { -// MpegMuxContext *s = ctx->priv_data; StreamInfo *stream; int i; - for(;;){ - int ret= output_packet(ctx, 1); - if(ret<0) + for (;;) { + int ret = output_packet(ctx, 1); + if (ret < 0) return ret; - else if(ret==0) + else if (ret == 0) break; } /* End header according to MPEG1 systems standard. We do not write - it as it is usually not needed by decoders and because it - complicates MPEG stream concatenation. */ - //avio_wb32(ctx->pb, ISO_11172_END_CODE); - //avio_flush(ctx->pb); + * it as it is usually not needed by decoders and because it + * complicates MPEG stream concatenation. */ + // avio_wb32(ctx->pb, ISO_11172_END_CODE); + // avio_flush(ctx->pb); - for(i=0;i<ctx->nb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { stream = ctx->streams[i]->priv_data; assert(av_fifo_size(stream->fifo) == 0); @@ -1167,17 +1187,17 @@ static int mpeg_mux_end(AVFormatContext *ctx) #define OFFSET(x) offsetof(MpegMuxContext, x) #define E AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { - { "muxrate", NULL, OFFSET(user_mux_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ((1<<22) - 1) * (8 * 50), E }, - { "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload), AV_OPT_TYPE_INT, {.i64 = 500000}, 0, INT_MAX, E}, + { "muxrate", NULL, OFFSET(user_mux_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, ((1<<22) - 1) * (8 * 50), E }, + { "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload), AV_OPT_TYPE_INT, { .i64 = 500000 }, 0, INT_MAX, E }, { NULL }, }; -#define MPEGENC_CLASS(flavor)\ -static const AVClass flavor ## _class = {\ - .class_name = #flavor " muxer",\ - .item_name = av_default_item_name,\ - .version = LIBAVUTIL_VERSION_INT,\ - .option = options,\ +#define MPEGENC_CLASS(flavor) \ +static const AVClass flavor ## _class = { \ + .class_name = #flavor " muxer", \ + .item_name = av_default_item_name, \ + .version = LIBAVUTIL_VERSION_INT, \ + .option = options, \ }; #if CONFIG_MPEG1SYSTEM_MUXER @@ -1196,6 +1216,7 @@ AVOutputFormat ff_mpeg1system_muxer = { .priv_class = &mpeg_class, }; #endif + #if CONFIG_MPEG1VCD_MUXER MPEGENC_CLASS(vcd) AVOutputFormat ff_mpeg1vcd_muxer = { @@ -1211,6 +1232,7 @@ AVOutputFormat ff_mpeg1vcd_muxer = { .priv_class = &vcd_class, }; #endif + #if CONFIG_MPEG2VOB_MUXER MPEGENC_CLASS(vob) AVOutputFormat ff_mpeg2vob_muxer = { |