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Code Issues Releases Activity

add support for muxing subtitles in mpeg-ps

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Originally committed as revision 4380 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2005-06-15 20:50:12 +00:00
parent 0a46c9330a
commit 9ba73f1f40
1 changed files with 19 additions and 6 deletions
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25
libavformat/mpeg.c
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@ -90,6 +90,7 @@ typedef struct {
#define AC3_ID 0x80
#define DTS_ID 0x8a
#define LPCM_ID 0xa0
#define SUB_ID 0x20
#define STREAM_TYPE_VIDEO_MPEG1 0x01
#define STREAM_TYPE_VIDEO_MPEG2 0x02
@ -322,7 +323,7 @@ static int get_system_header_size(AVFormatContext *ctx)
static int mpeg_mux_init(AVFormatContext *ctx)
{
MpegMuxContext *s = ctx->priv_data;
int bitrate, i, mpa_id, mpv_id, ac3_id, dts_id, lpcm_id, j;
int bitrate, i, mpa_id, mpv_id, mps_id, ac3_id, dts_id, lpcm_id, j;
AVStream *st;
StreamInfo *stream;
int audio_bitrate;
@ -348,6 +349,7 @@ static int mpeg_mux_init(AVFormatContext *ctx)
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];
@ -403,11 +405,14 @@ static int mpeg_mux_init(AVFormatContext *ctx)
#endif
s->video_bound++;
break;
case CODEC_TYPE_SUBTITLE:
stream->id = mps_id++;
stream->max_buffer_size = 16 * 1024;
break;
default:
return -1;
}
fifo_init(&stream->fifo, 16);
stream->next_packet= &stream->premux_packet;
}
bitrate = 0;
audio_bitrate = 0;
@ -809,9 +814,12 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
payload_size = packet_size - header_len;
if (id < 0xc0) {
startcode = PRIVATE_STREAM_1;
payload_size -= 4;
if (id >= 0xa0)
payload_size -= 1;
if (id >= 0x40) {
payload_size -= 3;
if (id >= 0xa0)
payload_size -= 3;
}
} else {
startcode = 0x100 + id;
}
@ -935,7 +943,7 @@ static int flush_packet(AVFormatContext *ctx, int stream_index,
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 {
} else if (id >= 0x40) {
/* AC3 */
put_byte(&ctx->pb, nb_frames);
put_be16(&ctx->pb, trailer_size+1);
@ -1062,7 +1070,10 @@ retry:
int rel_space= 1024*space / stream->max_buffer_size;
PacketDesc *next_pkt= stream->premux_packet;
if(s->packet_size > avail_data && !flush)
/* 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;
@ -1181,6 +1192,8 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
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;