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rework stream type and codec identification 

Originally committed as revision 19003 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2009-05-31 02:56:15 +00:00
parent 40b0872a56
commit 8430f3ecb8
1 changed files with 81 additions and 79 deletions
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160
libavformat/mpegts.c
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@ -42,7 +42,7 @@
typedef struct PESContext PESContext;
static PESContext* add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid, int stream_type);
static AVStream* new_pes_av_stream(PESContext *pes, uint32_t code);
static AVStream* new_pes_av_stream(PESContext *pes, uint32_t code, uint32_t prog_reg_desc, uint32_t reg_desc);
enum MpegTSFilterType {
MPEGTS_PES,
@ -496,8 +496,7 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
int desc_list_len, desc_len, desc_tag;
int comp_page = 0, anc_page = 0; /* initialize to kill warnings */
char language[4] = {0}; /* initialize to kill warnings */
int has_hdmv_descr = 0;
int has_dirac_descr = 0;
uint32_t prog_reg_desc = 0; /* registration descriptor */
uint32_t reg_desc = 0; /* registration descriptor */
#ifdef DEBUG
@ -536,10 +535,8 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
break;
program_info_length -= len + 2;
if(tag == REGISTRATION_DESCRIPTOR && len >= 4) {
reg_desc = bytestream_get_le32(&p);
prog_reg_desc = bytestream_get_le32(&p);
len -= 4;
if(reg_desc == AV_RL32("HDMV"))
has_hdmv_descr = 1;
}
p += len;
}
@ -547,6 +544,7 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
if (p >= p_end)
return;
for(;;) {
reg_desc = 0;
language[0] = 0;
st = 0;
stream_type = get8(&p, p_end);
@ -587,7 +585,7 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
switch(desc_tag) {
case DVB_SUBT_DESCID:
if (stream_type == STREAM_TYPE_PRIVATE_DATA)
stream_type = STREAM_TYPE_SUBTITLE_DVB;
stream_type = STREAM_TYPE_SUBTITLE_DVB; // demuxer internal
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
@ -606,10 +604,6 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
break;
case REGISTRATION_DESCRIPTOR: /*MPEG-2 Registration descriptor */
reg_desc = bytestream_get_le32(&p);
if(reg_desc == AV_RL32("drac"))
has_dirac_descr = 1;
else if(reg_desc == AV_RL32("AC-3"))
stream_type = STREAM_TYPE_AUDIO_AC3;
break;
default:
break;
@ -629,7 +623,7 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
pes = add_pes_stream(ts, pid, pcr_pid, stream_type);
if (pes)
st = new_pes_av_stream(pes, 0);
st = new_pes_av_stream(pes, 0, prog_reg_desc, reg_desc);
}
add_pid_to_pmt(ts, h->id, pid);
@ -933,78 +927,86 @@ static int mpegts_push_data(MpegTSFilter *filter,
return 0;
}
static AVStream* new_pes_av_stream(PESContext *pes, uint32_t code)
{
AVStream *st;
enum CodecID codec_id;
typedef struct {
uint32_t stream_type;
enum CodecType codec_type;
enum CodecID codec_id;
} StreamType;
switch(pes->stream_type){
case STREAM_TYPE_AUDIO_MPEG1:
case STREAM_TYPE_AUDIO_MPEG2:
codec_type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_MP3;
break;
case STREAM_TYPE_VIDEO_MPEG1:
case STREAM_TYPE_VIDEO_MPEG2:
codec_type = CODEC_TYPE_VIDEO;
codec_id = CODEC_ID_MPEG2VIDEO;
break;
case STREAM_TYPE_VIDEO_MPEG4:
codec_type = CODEC_TYPE_VIDEO;
codec_id = CODEC_ID_MPEG4;
break;
case STREAM_TYPE_VIDEO_H264:
codec_type = CODEC_TYPE_VIDEO;
codec_id = CODEC_ID_H264;
break;
case STREAM_TYPE_VIDEO_VC1:
codec_type = CODEC_TYPE_VIDEO;
codec_id = CODEC_ID_VC1;
break;
case STREAM_TYPE_VIDEO_DIRAC:
codec_type = CODEC_TYPE_VIDEO;
codec_id = CODEC_ID_DIRAC;
break;
case STREAM_TYPE_AUDIO_AAC:
codec_type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_AAC;
break;
case STREAM_TYPE_AUDIO_AC3:
codec_type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_AC3;
break;
case STREAM_TYPE_AUDIO_DTS:
case STREAM_TYPE_AUDIO_HDMV_DTS:
codec_type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_DTS;
break;
case STREAM_TYPE_SUBTITLE_DVB:
codec_type = CODEC_TYPE_SUBTITLE;
codec_id = CODEC_ID_DVB_SUBTITLE;
break;
default:
if (code >= 0x1c0 && code <= 0x1df) {
codec_type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_MP2;
} else if (code == 0x1bd) {
codec_type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_AC3;
} else {
codec_type = CODEC_TYPE_DATA;
codec_id = CODEC_ID_PROBE;
static const StreamType ISO_types[] = {
{ 0x01, CODEC_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
{ 0x02, CODEC_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
{ 0x03, CODEC_TYPE_AUDIO, CODEC_ID_MP3 },
{ 0x04, CODEC_TYPE_AUDIO, CODEC_ID_MP3 },
{ 0x0f, CODEC_TYPE_AUDIO, CODEC_ID_AAC },
{ 0x10, CODEC_TYPE_VIDEO, CODEC_ID_MPEG4 },
{ 0x1b, CODEC_TYPE_VIDEO, CODEC_ID_H264 },
{ 0xd1, CODEC_TYPE_VIDEO, CODEC_ID_DIRAC },
{ 0xea, CODEC_TYPE_VIDEO, CODEC_ID_VC1 },
{ 0 },
};
static const StreamType HDMV_types[] = {
{ 0x81, CODEC_TYPE_AUDIO, CODEC_ID_AC3 },
{ 0x82, CODEC_TYPE_AUDIO, CODEC_ID_DTS },
{ 0 },
};
/* ATSC ? */
static const StreamType MISC_types[] = {
{ 0x81, CODEC_TYPE_AUDIO, CODEC_ID_AC3 },
{ 0x8a, CODEC_TYPE_AUDIO, CODEC_ID_DTS },
{ STREAM_TYPE_SUBTITLE_DVB, CODEC_TYPE_SUBTITLE, CODEC_ID_DVB_SUBTITLE }, // demuxer internal
{ 0 },
};
static const StreamType REGD_types[] = {
{ MKTAG('d','r','a','c'), CODEC_TYPE_VIDEO, CODEC_ID_DIRAC },
{ MKTAG('A','C','-','3'), CODEC_TYPE_AUDIO, CODEC_ID_AC3 },
{ 0 },
};
static void mpegts_find_stream_type(AVStream *st,
uint32_t stream_type, const StreamType *types)
{
for (; types->stream_type; types++) {
if (stream_type == types->stream_type) {
st->codec->codec_type = types->codec_type;
st->codec->codec_id = types->codec_id;
return;
}
break;
}
st = av_new_stream(pes->stream, pes->pid);
if (st) {
av_set_pts_info(st, 33, 1, 90000);
st->priv_data = pes;
st->codec->codec_type = codec_type;
st->codec->codec_id = codec_id;
st->need_parsing = AVSTREAM_PARSE_FULL;
pes->st = st;
}
static AVStream *new_pes_av_stream(PESContext *pes, uint32_t code,
uint32_t prog_reg_desc, uint32_t reg_desc)
{
AVStream *st = av_new_stream(pes->stream, pes->pid);
if (!st)
return NULL;
av_set_pts_info(st, 33, 1, 90000);
st->priv_data = pes;
st->codec->codec_type = CODEC_TYPE_DATA;
st->codec->codec_id = CODEC_ID_PROBE;
st->need_parsing = AVSTREAM_PARSE_FULL;
pes->st = st;
dprintf(pes->stream, "stream_type=%x prog_reg_desc=%.4s reg_desc=%.4s\n",
pes->stream_type, (char*)&prog_reg_desc, (char*)&reg_desc);
if (pes->stream_type == 0x06) { // private data carrying pes data
mpegts_find_stream_type(st, reg_desc, REGD_types);
} else {
mpegts_find_stream_type(st, pes->stream_type, ISO_types);
if (prog_reg_desc == AV_RL32("HDMV") &&
st->codec->codec_id == CODEC_ID_PROBE)
mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
if (st->codec->codec_id == CODEC_ID_PROBE)
mpegts_find_stream_type(st, pes->stream_type, MISC_types);
}
return st;
}