- 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));
-}
-
-
-/* return the number of padding bytes that should be inserted into
- 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)
- {
- 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);
-
- 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;
- }
-
- 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) {
- /* AC3/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 == 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, ByteIOContext *pb,int packet_bytes)
-{
- MpegMuxContext *s = ctx->priv_data;
- int i;
-
- put_be32(pb, PADDING_STREAM);
- put_be16(pb, packet_bytes - 6);
- if (!s->is_mpeg2) {
- put_byte(pb, 0x0f);
- packet_bytes -= 7;
- } else
- packet_bytes -= 6;
-
- for(i=0;i<packet_bytes;i++)
- put_byte(pb, 0xff);
-}
-
-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)
- nb_frames++;
- len -= pkt_desc->unwritten_size;
- pkt_desc= pkt_desc->next;
- }
-
- return nb_frames;
-}
-
-/* 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)
-{
- 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;
- int packet_size;
- uint8_t buffer[128];
- 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?*/
- int nb_frames;
-
- id = stream->id;
-
-#if 0
- printf("packet ID=%2x PTS=%0.3f\n",
- id, pts / 90000.0);
-#endif
-
- 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;
-
- 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) {
- size = put_system_header(ctx, buf_ptr, id);
- buf_ptr += size;
- }
- } else if (s->is_dvd) {
- if (stream->align_iframe || s->packet_number == 0){
- int PES_bytes_to_fill = s->packet_size - size - 10;
-
- if (pts != AV_NOPTS_VALUE) {
- if (dts != pts)
- PES_bytes_to_fill -= 5 + 5;
- else
- PES_bytes_to_fill -= 5;
- }
-
- if (stream->bytes_to_iframe == 0 || s->packet_number == 0) {
- size = put_system_header(ctx, buf_ptr, 0);
- buf_ptr += size;
- size = buf_ptr - buffer;
- put_buffer(&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
- for (i = 0; i < 979; i++)
- put_byte(&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
- for (i = 0; i < 1017; i++)
- put_byte(&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;
- /* GOP Start */
- } else if (stream->bytes_to_iframe < PES_bytes_to_fill) {
- 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);
- buf_ptr += size;
- }
- }
- }
- size = buf_ptr - buffer;
- put_buffer(&ctx->pb, buffer, size);
-
- packet_size = s->packet_size - size;
-
- if (s->is_vcd && id == AUDIO_ID)
- /* The VCD standard demands that 20 zero bytes follow
- 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)) {
- /* 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.*/
- /* For SVCD we fill the very first pack to increase compatibility with
- 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*/
- 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)
- header_len += 3; /* PES extension */
- header_len += 1; /* obligatory stuffing byte */
- } else {
- header_len = 0;
- }
- if (pts != AV_NOPTS_VALUE) {
- if (dts != pts)
- header_len += 5 + 5;
- else
- header_len += 5;
- } else {
- if (!s->is_mpeg2)
- header_len++;
- }
-
- payload_size = packet_size - header_len;
- if (id < 0xc0) {
- startcode = PRIVATE_STREAM_1;
- payload_size -= 1;
- if (id >= 0x40) {
- payload_size -= 3;
- if (id >= 0xa0)
- payload_size -= 3;
- }
- } else {
- startcode = 0x100 + id;
- }
-
- stuffing_size = payload_size - av_fifo_size(&stream->fifo);
-
- // first byte doesnt fit -> reset pts/dts + stuffing
- if(payload_size <= trailer_size && pts != AV_NOPTS_VALUE){
- int timestamp_len=0;
- if(dts != pts)
- timestamp_len += 5;
- if(pts != AV_NOPTS_VALUE)
- timestamp_len += s->is_mpeg2 ? 5 : 4;
- 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;
- } else {
- payload_size += timestamp_len;
- }
- stuffing_size += timestamp_len;
- 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;
- payload_size += pad_packet_bytes; // undo the previous adjustment
- 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*/
- pad_packet_bytes += stuffing_size;
- packet_size -= stuffing_size;
- payload_size -= stuffing_size;
- stuffing_size = 0;
- }
-
- nb_frames= get_nb_frames(ctx, stream, payload_size - stuffing_size);
-
- put_be32(&ctx->pb, startcode);
-
- put_be16(&ctx->pb, packet_size);
-
- if (!s->is_mpeg2)
- for(i=0;i<stuffing_size;i++)
- put_byte(&ctx->pb, 0xff);
-
- if (s->is_mpeg2) {
- put_byte(&ctx->pb, 0x80); /* mpeg2 id */
-
- pes_flags=0;
-
- if (pts != AV_NOPTS_VALUE) {
- pes_flags |= 0x80;
- if (dts != pts)
- pes_flags |= 0x40;
- }
-
- /* 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) */
- if (stream->packet_number == 0)
- pes_flags |= 0x01;
-
- put_byte(&ctx->pb, pes_flags); /* flags */
- put_byte(&ctx->pb, header_len - 3 + stuffing_size);
-
- if (pes_flags & 0x80) /*write pts*/
- put_timestamp(&ctx->pb, (pes_flags & 0x40) ? 0x03 : 0x02, pts);
- 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 */
-
- /* P-STD buffer info */
- if (id == AUDIO_ID)
- put_be16(&ctx->pb, 0x4000 | stream->max_buffer_size/128);
- else
- put_be16(&ctx->pb, 0x6000 | stream->max_buffer_size/1024);
- }
-
- } else {
- if (pts != AV_NOPTS_VALUE) {
- if (dts != pts) {
- put_timestamp(&ctx->pb, 0x03, pts);
- put_timestamp(&ctx->pb, 0x01, dts);
- } else {
- put_timestamp(&ctx->pb, 0x02, pts);
- }
- } else {
- put_byte(&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);
-
- for(i=0;i<stuffing_size;i++)
- put_byte(&ctx->pb, 0xff);
- }
-
- if (startcode == PRIVATE_STREAM_1) {
- put_byte(&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]);
- } else if (id >= 0x40) {
- /* AC3 */
- put_byte(&ctx->pb, nb_frames);
- put_be16(&ctx->pb, trailer_size+1);
- }
- }
-
- /* output data */
- if(av_fifo_generic_read(&stream->fifo, payload_size - stuffing_size, &put_buffer, &ctx->pb) < 0)
- return -1;
- stream->bytes_to_iframe -= payload_size - stuffing_size;
- }else{
- payload_size=
- stuffing_size= 0;
- }
-
- if (pad_packet_bytes > 0)
- put_padding_packet(ctx,&ctx->pb, pad_packet_bytes);
-
- for(i=0;i<zero_trail_bytes;i++)
- put_byte(&ctx->pb, 0x00);
-
- put_flush_packet(&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.*/
- if (!general_pack)
- stream->packet_number++;
-
- return payload_size - stuffing_size;
-}
-
-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...*/
-
- MpegMuxContext *s = ctx->priv_data;
- int i;
-
- for(i=0;i<s->packet_size;i++)
- put_byte(&ctx->pb, 0);
-
- s->vcd_padding_bytes_written += s->packet_size;
-
- put_flush_packet(&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)*/
- s->packet_number++;
-}
-
-#if 0 /* unused, remove? */
-static int64_t get_vcd_scr(AVFormatContext *ctx,int stream_index,int64_t pts)
-{
- 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; i<ctx->nb_streams; i++){
- AVStream *st = ctx->streams[i];
- StreamInfo *stream = st->priv_data;
- PacketDesc *pkt_desc= stream->predecode_packet;
-
- while(pkt_desc && 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\n");
- break;
- }
- stream->buffer_index -= pkt_desc->size;
-
- stream->predecode_packet= pkt_desc->next;
- av_freep(&pkt_desc);
- }
- }
-
- return 0;
-}
-
-static int output_packet(AVFormatContext *ctx, int flush){
- MpegMuxContext *s = ctx->priv_data;
- AVStream *st;
- StreamInfo *stream;
- int i, avail_space, 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);
-
-retry:
- 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;
-
- /* 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 != CODEC_TYPE_SUBTITLE)
- return 0;
- if(avail_data==0)
- continue;
- assert(avail_data>0);
-
- if(space < s->packet_size && !ignore_constraints)
- continue;
-
- 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(best_i < 0){
- int64_t best_dts= INT64_MAX;
-
- 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;
- }
-
-#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)
- 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;
- }
- 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];
- 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;
- }
-
- 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{
- assert(av_fifo_size(&stream->fifo) == 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.*/
- 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
- 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
- }
- }
-
- 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
-
- 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)
- stream->premux_packet->unwritten_size -= es_size;
-
- if(remove_decoded_packets(ctx, s->last_scr) < 0)
- return -1;
-
- return 1;
-}
-
-static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
-{
- 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];
- 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 == CODEC_TYPE_VIDEO && (pkt->flags & PKT_FLAG_KEY);
-
- pts= pkt->pts;
- dts= pkt->dts;
-
- if(pts != AV_NOPTS_VALUE) pts += preload;
- if(dts != AV_NOPTS_VALUE) dts += 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);
- 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;
-
- av_fifo_realloc(&stream->fifo, av_fifo_size(&stream->fifo) + size + 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)
- stream->bytes_to_iframe = av_fifo_size(&stream->fifo);
- stream->align_iframe = 1;
- stream->vobu_start_pts = pts;
- } else {
- stream->align_iframe = 0;
- }
- }
-
- av_fifo_write(&stream->fifo, buf, size);
-
- 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)
- return ret;
- 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);
-
- for(i=0;i<ctx->nb_streams;i++) {
- stream = ctx->streams[i]->priv_data;
-
- assert(av_fifo_size(&stream->fifo) == 0);
- av_fifo_free(&stream->fifo);
- }
- return 0;
-}
-#endif //CONFIG_MUXERS
-
-/*********************************************/
-/* demux code */
-
-#define MAX_SYNC_SIZE 100000
-
-static int cdxa_probe(AVProbeData *p)
-{
- /* check file header */
- if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
- p->buf[2] == 'F' && p->buf[3] == 'F' &&
- p->buf[8] == 'C' && p->buf[9] == 'D' &&
- p->buf[10] == 'X' && p->buf[11] == 'A')
- return AVPROBE_SCORE_MAX;
- else
- return 0;