X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fmpegenc.c;h=1507e0ee3024677370e4d2271313d18349c0ef22;hb=90bc423212396e96a02edc1118982ab7f7766a63;hp=e5ee32d276be3c311ff0b4ca6e1bf6784c7b8b41;hpb=ae628ec1fd7f54c102bf9e667a3edd404b9b9128;p=ffmpeg diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c index e5ee32d276b..1507e0ee302 100644 --- a/libavformat/mpegenc.c +++ b/libavformat/mpegenc.c @@ -1,31 +1,39 @@ /* - * MPEG1/2 muxer + * MPEG-1/2 muxer * Copyright (c) 2000, 2001, 2002 Fabrice Bellard * - * 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 + +#include "libavutil/attributes.h" #include "libavutil/fifo.h" +#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" #define MAX_PAYLOAD_SIZE 4096 -//#define DEBUG_SEEK #undef NDEBUG #include @@ -35,11 +43,10 @@ typedef struct PacketDesc { int64_t dts; int size; int unwritten_size; - int flags; struct PacketDesc *next; } PacketDesc; -typedef struct { +typedef struct StreamInfo { AVFifoBuffer *fifo; uint8_t id; int max_buffer_size; /* in bytes */ @@ -55,7 +62,8 @@ typedef struct { int64_t vobu_start_pts; } StreamInfo; -typedef struct { +typedef struct MpegMuxContext { + const AVClass *class; int packet_size; /* required packet size */ int packet_number; int pack_header_freq; /* frequency (in packets^-1) at which we send pack headers */ @@ -71,9 +79,10 @@ 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; } MpegMuxContext; extern AVOutputFormat ff_mpeg1vcd_muxer; @@ -81,8 +90,8 @@ 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; @@ -90,21 +99,19 @@ 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); @@ -117,7 +124,8 @@ 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; @@ -129,21 +137,23 @@ 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); /* non constrainted bit stream */ + put_bits(&pb, 1, 0); /* variable bitrate */ + put_bits(&pb, 1, 0); /* nonconstrained bitstream */ } if (s->is_vcd || s->is_dvd) { @@ -158,7 +168,8 @@ 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); @@ -170,25 +181,27 @@ 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;inb_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; } } @@ -218,20 +231,17 @@ 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;inb_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) */ @@ -240,7 +250,7 @@ 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 */ @@ -271,11 +281,11 @@ 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;inb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { stream = ctx->streams[i]->priv_data; if (stream->id < 0xc0) { if (private_stream_coded) @@ -287,24 +297,24 @@ static int get_system_header_size(AVFormatContext *ctx) return buf_index; } -static int mpeg_mux_init(AVFormatContext *ctx) +static av_cold int mpeg_mux_init(AVFormatContext *ctx) { MpegMuxContext *s = ctx->priv_data; - int bitrate, i, mpa_id, mpv_id, mps_id, ac3_id, dts_id, lpcm_id, j; + int bitrate, i, mpa_id, mpv_id, h264_id, mps_id, ac3_id, dts_id, lpcm_id, j; AVStream *st; StreamInfo *stream; int audio_bitrate; 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); @@ -313,116 +323,122 @@ static 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 */ + ctx->max_delay = 0; 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; + h264_id = H264_ID; + mps_id = SUB_ID; lpcm_id = LPCM_ID; - for(i=0;inb_streams;i++) { - st = ctx->streams[i]; + + for (i = 0; i < ctx->nb_streams; i++) { + AVCPBProperties *props; + + st = ctx->streams[i]; stream = av_mallocz(sizeof(StreamInfo)); if (!stream) goto fail; st->priv_data = stream; - av_set_pts_info(st, 64, 1, 90000); + avpriv_set_pts_info(st, 64, 1, 90000); - switch(st->codec->codec_type) { + switch (st->codecpar->codec_type) { case AVMEDIA_TYPE_AUDIO: - if (st->codec->codec_id == CODEC_ID_AC3) { + if (st->codecpar->codec_id == AV_CODEC_ID_AC3) { stream->id = ac3_id++; - } else if (st->codec->codec_id == CODEC_ID_DTS) { + } else if (st->codecpar->codec_id == AV_CODEC_ID_DTS) { stream->id = dts_id++; - } else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) { + } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE) { stream->id = lpcm_id++; - for(j = 0; j < 4; j++) { - if (lpcm_freq_tab[j] == st->codec->sample_rate) + for (j = 0; j < 4; j++) { + if (lpcm_freq_tab[j] == st->codecpar->sample_rate) break; } if (j == 4) goto fail; - if (st->codec->channels > 8) + if (st->codecpar->channels > 8) return -1; stream->lpcm_header[0] = 0x0c; - stream->lpcm_header[1] = (st->codec->channels - 1) | (j << 4); + stream->lpcm_header[1] = (st->codecpar->channels - 1) | (j << 4); stream->lpcm_header[2] = 0x80; - stream->lpcm_align = st->codec->channels * 2; + stream->lpcm_align = st->codecpar->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; - else { - av_log(ctx, AV_LOG_WARNING, "VBV buffer size not set, muxing may fail\n"); - stream->max_buffer_size = 230*1024; //FIXME this is probably too small as default - } -#if 0 - /* see VCD standard, p. IV-7*/ - stream->max_buffer_size = 46 * 1024; + if (st->codecpar->codec_id == AV_CODEC_ID_H264) + stream->id = h264_id++; else - /* This value HAS to be used for SVCD (see SVCD standard, p. 26 V.2.3.2). - Right now it is also used for everything else.*/ + stream->id = mpv_id++; + + props = (AVCPBProperties*)av_stream_get_side_data(st, AV_PKT_DATA_CPB_PROPERTIES, NULL); + if (props && props->buffer_size) + stream->max_buffer_size = 6 * 1024 + props->buffer_size / 8; + else { + av_log(ctx, AV_LOG_WARNING, + "VBV buffer size not set, muxing may fail\n"); + // FIXME: this is probably too small as default stream->max_buffer_size = 230 * 1024; -#endif + } 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;inb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { + AVCPBProperties *props; 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; + props = (AVCPBProperties*)av_stream_get_side_data(st, AV_PKT_DATA_CPB_PROPERTIES, NULL); + if (props) + codec_rate = props->max_bitrate; else - codec_rate= st->codec->bit_rate; + codec_rate = st->codecpar->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 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) video_bitrate += codec_rate; } - if(ctx->mux_rate){ - s->mux_rate= (ctx->mux_rate + (8 * 50) - 1) / (8 * 50); - } else { + if (!s->mux_rate) { /* we increase slightly the bitrate to take into account the - headers. XXX: compute it exactly */ - bitrate += bitrate*5/100; - bitrate += 10000; + * headers. XXX: compute it exactly */ + bitrate += bitrate / 20; + bitrate += 10000; s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50); } @@ -430,23 +446,23 @@ static 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; @@ -464,181 +480,93 @@ static 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;inb_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 = 0; + s->last_scr = 0; return 0; - fail: - for(i=0;inb_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) { - put_byte(pb, - (id << 4) | - (((timestamp >> 30) & 0x07) << 1) | - 1); - put_be16(pb, (uint16_t)((((timestamp >> 15) & 0x7fff) << 1) | 1)); - put_be16(pb, (uint16_t)((((timestamp ) & 0x7fff) << 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)); } - /* 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; } - -#if 0 /* unused, remove? */ -/* return the exact available payload size for the next packet for - stream 'stream_index'. 'pts' and 'dts' are only used to know if - timestamps are needed in the packet header. */ -static int get_packet_payload_size(AVFormatContext *ctx, int stream_index, - int64_t pts, int64_t dts) -{ - MpegMuxContext *s = ctx->priv_data; - int buf_index; - StreamInfo *stream; - - stream = ctx->streams[stream_index]->priv_data; - - buf_index = 0; - if (((s->packet_number % s->pack_header_freq) == 0)) { - /* pack header size */ - if (s->is_mpeg2) - buf_index += 14; - else - buf_index += 12; - - 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).*/ - - if (stream->packet_number==0) - /* The system headers refer only to the stream they occur in, - so they have a constant size.*/ - buf_index += 15; - - } else { - if ((s->packet_number % s->system_header_freq) == 0) - buf_index += s->system_header_size; - } - } - - if ((s->is_vcd && stream->packet_number==0) - || (s->is_svcd && s->packet_number==0)) - /* the first pack of each stream contains only the pack header, - the system header and some padding (see VCD standard p. IV-6) - Add the padding size, so that the actual payload becomes 0.*/ - buf_index += s->packet_size - buf_index; - else { - /* packet header size */ - buf_index += 6; - if (s->is_mpeg2) { - buf_index += 3; - if (stream->packet_number==0) - buf_index += 3; /* PES extension */ - buf_index += 1; /* obligatory stuffing byte */ - } - if (pts != AV_NOPTS_VALUE) { - if (dts != pts) - buf_index += 5 + 5; - else - buf_index += 5; - - } else { - if (!s->is_mpeg2) - buf_index++; - } - - if (stream->id < 0xc0) { - /* AC-3/LPCM private data header */ - buf_index += 4; - if (stream->id >= 0xa0) { - int n; - buf_index += 3; - /* NOTE: we round the payload size to an integer number of - LPCM samples */ - n = (s->packet_size - buf_index) % stream->lpcm_align; - if (n) - buf_index += (stream->lpcm_align - n); - } - } - - if (s->is_vcd && (stream->id & 0xe0) == AUDIO_ID) - /* The VCD standard demands that 20 zero bytes follow - each audio packet (see standard p. IV-8).*/ - buf_index+=20; - } - return s->packet_size - buf_index; -} -#endif - /* 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; - put_be32(pb, PADDING_STREAM); - put_be16(pb, packet_bytes - 6); + avio_wb32(pb, PADDING_STREAM); + avio_wb16(pb, packet_bytes - 6); if (!s->is_mpeg2) { - put_byte(pb, 0x0f); + avio_w8(pb, 0x0f); packet_bytes -= 7; } else packet_bytes -= 6; - for(i=0;ipremux_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; @@ -646,9 +574,9 @@ 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; @@ -657,35 +585,33 @@ 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; -#if 0 - printf("packet ID=%2x PTS=%0.3f\n", - id, pts / 90000.0); -#endif + av_log(ctx, AV_LOG_TRACE, "packet ID=%2x PTS=%0.3f\n", id, pts / 90000.0); buf_ptr = buffer; 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) { @@ -696,77 +622,80 @@ 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; - put_buffer(ctx->pb, buffer, size); + size = buf_ptr - buffer; + avio_write(ctx->pb, buffer, size); - put_be32(ctx->pb, PRIVATE_STREAM_2); - put_be16(ctx->pb, 0x03d4); // length - put_byte(ctx->pb, 0x00); // substream ID, 00=PCI + avio_wb32(ctx->pb, PRIVATE_STREAM_2); + avio_wb16(ctx->pb, 0x03d4); // length + avio_w8(ctx->pb, 0x00); // substream ID, 00=PCI for (i = 0; i < 979; i++) - put_byte(ctx->pb, 0x00); + avio_w8(ctx->pb, 0x00); - put_be32(ctx->pb, PRIVATE_STREAM_2); - put_be16(ctx->pb, 0x03fa); // length - put_byte(ctx->pb, 0x01); // substream ID, 01=DSI + avio_wb32(ctx->pb, PRIVATE_STREAM_2); + avio_wb16(ctx->pb, 0x03fa); // length + avio_w8(ctx->pb, 0x01); // substream ID, 01=DSI for (i = 0; i < 1017; i++) - put_byte(ctx->pb, 0x00); + avio_w8(ctx->pb, 0x00); memset(buffer, 0, 128); 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; } } } size = buf_ptr - buffer; - put_buffer(ctx->pb, buffer, size); + avio_write(ctx->pb, buffer, size); packet_size = s->packet_size - size; 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 { @@ -784,7 +713,7 @@ 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; @@ -798,59 +727,66 @@ 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; } if (stuffing_size < 0) stuffing_size = 0; - if (stuffing_size > 16) { /*<=16 for MPEG-1, <=32 for MPEG-2*/ + + if (startcode == PRIVATE_STREAM_1 && id >= 0xa0) { + if (payload_size < av_fifo_size(stream->fifo)) + stuffing_size += payload_size % stream->lpcm_align; + } + + 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); - put_be32(ctx->pb, startcode); + avio_wb32(ctx->pb, startcode); - put_be16(ctx->pb, packet_size); + avio_wb16(ctx->pb, packet_size); if (!s->is_mpeg2) - for(i=0;ipb, 0xff); + for (i = 0; i < stuffing_size; i++) + avio_w8(ctx->pb, 0xff); if (s->is_mpeg2) { - put_byte(ctx->pb, 0x80); /* mpeg2 id */ + avio_w8(ctx->pb, 0x80); /* mpeg2 id */ - pes_flags=0; + pes_flags = 0; if (pts != AV_NOPTS_VALUE) { pes_flags |= 0x80; @@ -859,30 +795,29 @@ 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; - put_byte(ctx->pb, pes_flags); /* flags */ - put_byte(ctx->pb, header_len - 3 + stuffing_size); + 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*/ - put_byte(ctx->pb, 0x10); /* flags */ + if (pes_flags & 0x01) { /* write pes extension */ + avio_w8(ctx->pb, 0x10); /* flags */ /* P-STD buffer info */ if ((id & 0xe0) == AUDIO_ID) - put_be16(ctx->pb, 0x4000 | stream->max_buffer_size/ 128); + avio_wb16(ctx->pb, 0x4000 | stream->max_buffer_size / 128); else - put_be16(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) { @@ -892,57 +827,59 @@ static int flush_packet(AVFormatContext *ctx, int stream_index, put_timestamp(ctx->pb, 0x02, pts); } } else { - put_byte(ctx->pb, 0x0f); + avio_w8(ctx->pb, 0x0f); } } if (s->is_mpeg2) { /* special stuffing byte that is always written - to prevent accidental generation of start codes. */ - put_byte(ctx->pb, 0xff); + * to prevent accidental generation of start codes. */ + avio_w8(ctx->pb, 0xff); - for(i=0;ipb, 0xff); + for (i = 0; i < stuffing_size; i++) + avio_w8(ctx->pb, 0xff); } if (startcode == PRIVATE_STREAM_1) { - put_byte(ctx->pb, id); + avio_w8(ctx->pb, id); if (id >= 0xa0) { /* LPCM (XXX: check nb_frames) */ - put_byte(ctx->pb, 7); - put_be16(ctx->pb, 4); /* skip 3 header bytes */ - put_byte(ctx->pb, stream->lpcm_header[0]); - put_byte(ctx->pb, stream->lpcm_header[1]); - put_byte(ctx->pb, stream->lpcm_header[2]); + avio_w8(ctx->pb, 7); + avio_wb16(ctx->pb, 4); /* skip 3 header bytes */ + avio_w8(ctx->pb, stream->lpcm_header[0]); + avio_w8(ctx->pb, stream->lpcm_header[1]); + avio_w8(ctx->pb, stream->lpcm_header[2]); } else if (id >= 0x40) { /* AC-3 */ - put_byte(ctx->pb, nb_frames); - put_be16(ctx->pb, trailer_size+1); + avio_w8(ctx->pb, nb_frames); + 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, &put_buffer); + av_fifo_generic_read(stream->fifo, ctx->pb, + payload_size - stuffing_size, + (void (*)(void*, void*, int))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;ipb, 0x00); + for (i = 0; i < zero_trail_bytes; i++) + avio_w8(ctx->pb, 0x00); - put_flush_packet(ctx->pb); + avio_flush(ctx->pb); 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++; @@ -952,71 +889,48 @@ 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;ipacket_size;i++) - put_byte(ctx->pb, 0); + for (i = 0; i < s->packet_size; i++) + avio_w8(ctx->pb, 0); s->vcd_padding_bytes_written += s->packet_size; - put_flush_packet(ctx->pb); + 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++; } -#if 0 /* unused, remove? */ -static int64_t get_vcd_scr(AVFormatContext *ctx,int stream_index,int64_t pts) +static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr) { - MpegMuxContext *s = ctx->priv_data; - int64_t scr; - - /* Since the data delivery rate is constant, SCR is computed - using the formula C + i * 1200 where C is the start constant - and i is the pack index. - It is recommended that SCR 0 is at the beginning of the VCD front - margin (a sequence of empty Form 2 sectors on the CD). - It is recommended that the front margin is 30 sectors long, so - we use C = 30*1200 = 36000 - (Note that even if the front margin is not 30 sectors the file - will still be correct according to the standard. It just won't have - the "recommended" value).*/ - scr = 36000 + s->packet_number * 1200; - - return scr; -} -#endif - -static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){ -// MpegMuxContext *s = ctx->priv_data; int i; - for(i=0; inb_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 i=%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); } } @@ -1024,124 +938,133 @@ 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; inb_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= 1024*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 = 1024 * 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->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) return 0; - if(avail_data==0) + if (avail_data == 0) continue; - assert(avail_data>0); + assert(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(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; inb_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; } -#if 0 - av_log(ctx, AV_LOG_DEBUG, "bumping scr, scr:%f, dts:%f\n", - scr/90000.0, best_dts/90000.0); -#endif - if(best_dts == INT64_MAX) + av_log(ctx, AV_LOG_TRACE, "bumping scr, scr:%f, dts:%f\n", + scr / 90000.0, best_dts / 90000.0); + 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){ -//av_log(ctx, AV_LOG_DEBUG, "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{ + if (timestamp_packet) { + av_log(ctx, AV_LOG_TRACE, "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 { 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 (stream->premux_packet && 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; @@ -1149,81 +1072,89 @@ 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; - const int preload= av_rescale(ctx->preload, 90000, AV_TIME_BASE); - const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (pkt->flags & AV_PKT_FLAG_KEY); + int preload; + const int is_iframe = st->codecpar->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(pts != AV_NOPTS_VALUE) pts += 2*preload; - if(dts != AV_NOPTS_VALUE){ - if(!s->last_scr) - s->last_scr= dts + preload; - dts += 2*preload; + if (pts != AV_NOPTS_VALUE) + pts += 2 * preload; + if (dts != AV_NOPTS_VALUE) { + if (!s->last_scr) + s->last_scr = dts + preload; + dts += 2 * preload; } -//av_log(ctx, AV_LOG_DEBUG, "dts:%f pts:%f flags:%d stream:%d nopts:%d\n", dts/90000.0, pts/90000.0, pkt->flags, pkt->stream_index, pts != AV_NOPTS_VALUE); + av_log(ctx, AV_LOG_TRACE, "dts:%f pts:%f flags:%d stream:%d nopts:%d\n", + dts / 90000.0, pts / 90000.0, pkt->flags, + 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. */ - //put_be32(ctx->pb, ISO_11172_END_CODE); - //put_flush_packet(ctx->pb); + /* End header according to MPEG-1 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); - for(i=0;inb_streams;i++) { + for (i = 0; i < ctx->nb_streams; i++) { stream = ctx->streams[i]->priv_data; assert(av_fifo_size(stream->fifo) == 0); @@ -1232,77 +1163,104 @@ static int mpeg_mux_end(AVFormatContext *ctx) return 0; } +#define OFFSET(x) offsetof(MpegMuxContext, x) +#define E AV_OPT_FLAG_ENCODING_PARAM +static const AVOption options[] = { + { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, (1 << 22) - 1, 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, \ +}; + #if CONFIG_MPEG1SYSTEM_MUXER +MPEGENC_CLASS(mpeg) AVOutputFormat ff_mpeg1system_muxer = { - "mpeg", - NULL_IF_CONFIG_SMALL("MPEG-1 System format"), - "video/mpeg", - "mpg,mpeg", - sizeof(MpegMuxContext), - CODEC_ID_MP2, - CODEC_ID_MPEG1VIDEO, - mpeg_mux_init, - mpeg_mux_write_packet, - mpeg_mux_end, + .name = "mpeg", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 Systems / MPEG program stream"), + .mime_type = "video/mpeg", + .extensions = "mpg,mpeg", + .priv_data_size = sizeof(MpegMuxContext), + .audio_codec = AV_CODEC_ID_MP2, + .video_codec = AV_CODEC_ID_MPEG1VIDEO, + .write_header = mpeg_mux_init, + .write_packet = mpeg_mux_write_packet, + .write_trailer = mpeg_mux_end, + .priv_class = &mpeg_class, }; #endif + #if CONFIG_MPEG1VCD_MUXER +MPEGENC_CLASS(vcd) AVOutputFormat ff_mpeg1vcd_muxer = { - "vcd", - NULL_IF_CONFIG_SMALL("MPEG-1 System format (VCD)"), - "video/mpeg", - NULL, - sizeof(MpegMuxContext), - CODEC_ID_MP2, - CODEC_ID_MPEG1VIDEO, - mpeg_mux_init, - mpeg_mux_write_packet, - mpeg_mux_end, + .name = "vcd", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 Systems / MPEG program stream (VCD)"), + .mime_type = "video/mpeg", + .priv_data_size = sizeof(MpegMuxContext), + .audio_codec = AV_CODEC_ID_MP2, + .video_codec = AV_CODEC_ID_MPEG1VIDEO, + .write_header = mpeg_mux_init, + .write_packet = mpeg_mux_write_packet, + .write_trailer = mpeg_mux_end, + .priv_class = &vcd_class, }; #endif + #if CONFIG_MPEG2VOB_MUXER +MPEGENC_CLASS(vob) AVOutputFormat ff_mpeg2vob_muxer = { - "vob", - NULL_IF_CONFIG_SMALL("MPEG-2 PS format (VOB)"), - "video/mpeg", - "vob", - sizeof(MpegMuxContext), - CODEC_ID_MP2, - CODEC_ID_MPEG2VIDEO, - mpeg_mux_init, - mpeg_mux_write_packet, - mpeg_mux_end, + .name = "vob", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 PS (VOB)"), + .mime_type = "video/mpeg", + .extensions = "vob", + .priv_data_size = sizeof(MpegMuxContext), + .audio_codec = AV_CODEC_ID_MP2, + .video_codec = AV_CODEC_ID_MPEG2VIDEO, + .write_header = mpeg_mux_init, + .write_packet = mpeg_mux_write_packet, + .write_trailer = mpeg_mux_end, + .priv_class = &vob_class, }; #endif /* Same as mpeg2vob_mux except that the pack size is 2324 */ #if CONFIG_MPEG2SVCD_MUXER +MPEGENC_CLASS(svcd) AVOutputFormat ff_mpeg2svcd_muxer = { - "svcd", - NULL_IF_CONFIG_SMALL("MPEG-2 PS format (VOB)"), - "video/mpeg", - "vob", - sizeof(MpegMuxContext), - CODEC_ID_MP2, - CODEC_ID_MPEG2VIDEO, - mpeg_mux_init, - mpeg_mux_write_packet, - mpeg_mux_end, + .name = "svcd", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 PS (SVCD)"), + .mime_type = "video/mpeg", + .extensions = "vob", + .priv_data_size = sizeof(MpegMuxContext), + .audio_codec = AV_CODEC_ID_MP2, + .video_codec = AV_CODEC_ID_MPEG2VIDEO, + .write_header = mpeg_mux_init, + .write_packet = mpeg_mux_write_packet, + .write_trailer = mpeg_mux_end, + .priv_class = &svcd_class, }; #endif /* Same as mpeg2vob_mux except the 'is_dvd' flag is set to produce NAV pkts */ #if CONFIG_MPEG2DVD_MUXER +MPEGENC_CLASS(dvd) AVOutputFormat ff_mpeg2dvd_muxer = { - "dvd", - NULL_IF_CONFIG_SMALL("MPEG-2 PS format (DVD VOB)"), - "video/mpeg", - "dvd", - sizeof(MpegMuxContext), - CODEC_ID_MP2, - CODEC_ID_MPEG2VIDEO, - mpeg_mux_init, - mpeg_mux_write_packet, - mpeg_mux_end, + .name = "dvd", + .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 PS (DVD VOB)"), + .mime_type = "video/mpeg", + .extensions = "dvd", + .priv_data_size = sizeof(MpegMuxContext), + .audio_codec = AV_CODEC_ID_MP2, + .video_codec = AV_CODEC_ID_MPEG2VIDEO, + .write_header = mpeg_mux_init, + .write_packet = mpeg_mux_write_packet, + .write_trailer = mpeg_mux_end, + .priv_class = &dvd_class, }; #endif