Commit 5b8f0a5e authored by Tanja Batchelor's avatar Tanja Batchelor Committed by Vittorio Giovara

mpeg: K&R formatting cosmetics

Signed-off-by: default avatarVittorio Giovara <vittorio.giovara@gmail.com>
parent f51d0f39
...@@ -31,72 +31,89 @@ ...@@ -31,72 +31,89 @@
#define MAX_SYNC_SIZE 100000 #define MAX_SYNC_SIZE 100000
static int check_pes(uint8_t *p, uint8_t *end){ static int check_pes(uint8_t *p, uint8_t *end)
{
int pes1; int pes1;
int pes2= (p[3] & 0xC0) == 0x80 int pes2 = (p[3] & 0xC0) == 0x80 &&
&& (p[4] & 0xC0) != 0x40 (p[4] & 0xC0) != 0x40 &&
&&((p[4] & 0xC0) == 0x00 || (p[4]&0xC0)>>2 == (p[6]&0xF0)); ((p[4] & 0xC0) == 0x00 ||
(p[4] & 0xC0) >> 2 == (p[6] & 0xF0));
for(p+=3; p<end && *p == 0xFF; p++);
if((*p&0xC0) == 0x40) p+=2; for (p += 3; p < end && *p == 0xFF; p++) ;
if((*p&0xF0) == 0x20){ if ((*p & 0xC0) == 0x40)
pes1= p[0]&p[2]&p[4]&1; p += 2;
}else if((*p&0xF0) == 0x30){
pes1= p[0]&p[2]&p[4]&p[5]&p[7]&p[9]&1; if ((*p & 0xF0) == 0x20)
}else pes1 = p[0] & p[2] & p[4] & 1;
else if ((*p & 0xF0) == 0x30)
pes1 = p[0] & p[2] & p[4] & p[5] & p[7] & p[9] & 1;
else
pes1 = *p == 0x0F; pes1 = *p == 0x0F;
return pes1||pes2; return pes1 || pes2;
} }
static int check_pack_header(const uint8_t *buf) { static int check_pack_header(const uint8_t *buf)
{
return (buf[1] & 0xC0) == 0x40 || (buf[1] & 0xF0) == 0x20; return (buf[1] & 0xC0) == 0x40 || (buf[1] & 0xF0) == 0x20;
} }
static int mpegps_probe(AVProbeData *p) static int mpegps_probe(AVProbeData *p)
{ {
uint32_t code= -1; uint32_t code = -1;
int sys=0, pspack=0, priv1=0, vid=0, audio=0, invalid=0;
int i; int i;
int score=0; int sys = 0, pspack = 0, priv1 = 0, vid = 0;
int audio = 0, invalid = 0, score = 0;
for(i=0; i<p->buf_size; i++){ for (i = 0; i < p->buf_size; i++) {
code = (code<<8) + p->buf[i]; code = (code << 8) + p->buf[i];
if ((code & 0xffffff00) == 0x100) { if ((code & 0xffffff00) == 0x100) {
int len= p->buf[i+1] << 8 | p->buf[i+2]; int len = p->buf[i + 1] << 8 | p->buf[i + 2];
int pes= check_pes(p->buf+i, p->buf+p->buf_size); int pes = check_pes(p->buf + i, p->buf + p->buf_size);
int pack = check_pack_header(p->buf+i); int pack = check_pack_header(p->buf + i);
if(code == SYSTEM_HEADER_START_CODE) sys++; if (code == SYSTEM_HEADER_START_CODE)
else if(code == PACK_START_CODE && pack) pspack++; sys++;
else if((code & 0xf0) == VIDEO_ID && pes) vid++; else if (code == PACK_START_CODE && pack)
pspack++;
else if ((code & 0xf0) == VIDEO_ID && pes)
vid++;
// skip pes payload to avoid start code emulation for private // skip pes payload to avoid start code emulation for private
// and audio streams // and audio streams
else if((code & 0xe0) == AUDIO_ID && pes) {audio++; i+=len;} else if ((code & 0xe0) == AUDIO_ID && pes) {
else if(code == PRIVATE_STREAM_1 && pes) {priv1++; i+=len;} audio++;
i += len;
else if((code & 0xf0) == VIDEO_ID && !pes) invalid++; } else if (code == PRIVATE_STREAM_1 && pes) {
else if((code & 0xe0) == AUDIO_ID && !pes) invalid++; priv1++;
else if(code == PRIVATE_STREAM_1 && !pes) invalid++; i += len;
} else if ((code & 0xf0) == VIDEO_ID && !pes)
invalid++;
else if ((code & 0xe0) == AUDIO_ID && !pes)
invalid++;
else if (code == PRIVATE_STREAM_1 && !pes)
invalid++;
} }
} }
if(vid+audio > invalid) /* invalid VDR files nd short PES streams */ if (vid + audio > invalid) /* invalid VDR files nd short PES streams */
score = AVPROBE_SCORE_EXTENSION / 2; score = AVPROBE_SCORE_EXTENSION / 2;
if(sys>invalid && sys*9 <= pspack*10) if (sys > invalid && sys * 9 <= pspack * 10)
return pspack > 2 ? AVPROBE_SCORE_EXTENSION + 2 : AVPROBE_SCORE_EXTENSION / 2; // 1 more than .mpg return pspack > 2 ? AVPROBE_SCORE_EXTENSION + 2
if(pspack > invalid && (priv1+vid+audio)*10 >= pspack*9) : AVPROBE_SCORE_EXTENSION / 2; // 1 more than .mpg
return pspack > 2 ? AVPROBE_SCORE_EXTENSION + 2 : AVPROBE_SCORE_EXTENSION / 2; // 1 more than .mpg if (pspack > invalid && (priv1 + vid + audio) * 10 >= pspack * 9)
if((!!vid ^ !!audio) && (audio > 4 || vid > 1) && !sys && !pspack && p->buf_size>2048 && vid + audio > invalid) /* PES stream */ return pspack > 2 ? AVPROBE_SCORE_EXTENSION + 2
return (audio > 12 || vid > 3) ? AVPROBE_SCORE_EXTENSION + 2 : AVPROBE_SCORE_EXTENSION / 2; : AVPROBE_SCORE_EXTENSION / 2; // 1 more than .mpg
if ((!!vid ^ !!audio) && (audio > 4 || vid > 1) && !sys &&
//02-Penguin.flac has sys:0 priv1:0 pspack:0 vid:0 audio:1 !pspack && p->buf_size > 2048 && vid + audio > invalid) /* PES stream */
//mp3_misidentified_2.mp3 has sys:0 priv1:0 pspack:0 vid:0 audio:6 return (audio > 12 || vid > 3) ? AVPROBE_SCORE_EXTENSION + 2
: AVPROBE_SCORE_EXTENSION / 2;
// 02-Penguin.flac has sys:0 priv1:0 pspack:0 vid:0 audio:1
// mp3_misidentified_2.mp3 has sys:0 priv1:0 pspack:0 vid:0 audio:6
return score; return score;
} }
typedef struct MpegDemuxContext { typedef struct MpegDemuxContext {
int32_t header_state; int32_t header_state;
unsigned char psm_es_type[256]; unsigned char psm_es_type[256];
...@@ -106,11 +123,11 @@ typedef struct MpegDemuxContext { ...@@ -106,11 +123,11 @@ typedef struct MpegDemuxContext {
static int mpegps_read_header(AVFormatContext *s) static int mpegps_read_header(AVFormatContext *s)
{ {
MpegDemuxContext *m = s->priv_data; MpegDemuxContext *m = s->priv_data;
const char *sofdec = "Sofdec"; const char *sofdec = "Sofdec";
int v, i = 0; int v, i = 0;
m->header_state = 0xff; m->header_state = 0xff;
s->ctx_flags |= AVFMTCTX_NOHEADER; s->ctx_flags |= AVFMTCTX_NOHEADER;
m->sofdec = -1; m->sofdec = -1;
do { do {
...@@ -129,8 +146,8 @@ static int64_t get_pts(AVIOContext *pb, int c) ...@@ -129,8 +146,8 @@ static int64_t get_pts(AVIOContext *pb, int c)
{ {
uint8_t buf[5]; uint8_t buf[5];
buf[0] = c<0 ? avio_r8(pb) : c; buf[0] = c < 0 ? avio_r8(pb) : c;
avio_read(pb, buf+1, 4); avio_read(pb, buf + 1, 4);
return ff_parse_pes_pts(buf); return ff_parse_pes_pts(buf);
} }
...@@ -142,7 +159,7 @@ static int find_next_start_code(AVIOContext *pb, int *size_ptr, ...@@ -142,7 +159,7 @@ static int find_next_start_code(AVIOContext *pb, int *size_ptr,
int val, n; int val, n;
state = *header_state; state = *header_state;
n = *size_ptr; n = *size_ptr;
while (n > 0) { while (n > 0) {
if (pb->eof_reached) if (pb->eof_reached)
break; break;
...@@ -150,15 +167,16 @@ static int find_next_start_code(AVIOContext *pb, int *size_ptr, ...@@ -150,15 +167,16 @@ static int find_next_start_code(AVIOContext *pb, int *size_ptr,
n--; n--;
if (state == 0x000001) { if (state == 0x000001) {
state = ((state << 8) | v) & 0xffffff; state = ((state << 8) | v) & 0xffffff;
val = state; val = state;
goto found; goto found;
} }
state = ((state << 8) | v) & 0xffffff; state = ((state << 8) | v) & 0xffffff;
} }
val = -1; val = -1;
found:
found:
*header_state = state; *header_state = state;
*size_ptr = n; *size_ptr = n;
return val; return val;
} }
...@@ -182,10 +200,11 @@ static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb) ...@@ -182,10 +200,11 @@ static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb)
es_map_length = avio_rb16(pb); es_map_length = avio_rb16(pb);
/* at least one es available? */ /* at least one es available? */
while (es_map_length >= 4){ while (es_map_length >= 4) {
unsigned char type = avio_r8(pb); unsigned char type = avio_r8(pb);
unsigned char es_id = avio_r8(pb); unsigned char es_id = avio_r8(pb);
uint16_t es_info_length = avio_rb16(pb); uint16_t es_info_length = avio_rb16(pb);
/* remember mapping from stream id to stream type */ /* remember mapping from stream id to stream type */
m->psm_es_type[es_id] = type; m->psm_es_type[es_id] = type;
/* skip program_stream_info */ /* skip program_stream_info */
...@@ -197,7 +216,7 @@ static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb) ...@@ -197,7 +216,7 @@ static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb)
} }
/* read the next PES header. Return its position in ppos /* read the next PES header. Return its position in ppos
(if not NULL), and its start code, pts and dts. * (if not NULL), and its start code, pts and dts.
*/ */
static int mpegps_read_pes_header(AVFormatContext *s, static int mpegps_read_pes_header(AVFormatContext *s,
int64_t *ppos, int *pstart_code, int64_t *ppos, int *pstart_code,
...@@ -207,20 +226,20 @@ static int mpegps_read_pes_header(AVFormatContext *s, ...@@ -207,20 +226,20 @@ static int mpegps_read_pes_header(AVFormatContext *s,
int len, size, startcode, c, flags, header_len; int len, size, startcode, c, flags, header_len;
int pes_ext, ext2_len, id_ext, skip; int pes_ext, ext2_len, id_ext, skip;
int64_t pts, dts; int64_t pts, dts;
int64_t last_sync= avio_tell(s->pb); int64_t last_sync = avio_tell(s->pb);
error_redo: error_redo:
avio_seek(s->pb, last_sync, SEEK_SET); avio_seek(s->pb, last_sync, SEEK_SET);
redo: redo:
/* next start code (should be immediately after) */ /* next start code (should be immediately after) */
m->header_state = 0xff; m->header_state = 0xff;
size = MAX_SYNC_SIZE; size = MAX_SYNC_SIZE;
startcode = find_next_start_code(s->pb, &size, &m->header_state); startcode = find_next_start_code(s->pb, &size, &m->header_state);
last_sync = avio_tell(s->pb); last_sync = avio_tell(s->pb);
if (startcode < 0){ if (startcode < 0) {
if(s->pb->eof_reached) if (s->pb->eof_reached)
return AVERROR_EOF; return AVERROR_EOF;
//FIXME we should remember header_state // FIXME we should remember header_state
return AVERROR(EAGAIN); return AVERROR(EAGAIN);
} }
...@@ -266,7 +285,7 @@ static int mpegps_read_pes_header(AVFormatContext *s, ...@@ -266,7 +285,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
pts = pts =
dts = AV_NOPTS_VALUE; dts = AV_NOPTS_VALUE;
/* stuffing */ /* stuffing */
for(;;) { for (;;) {
if (len < 1) if (len < 1)
goto error_redo; goto error_redo;
c = avio_r8(s->pb); c = avio_r8(s->pb);
...@@ -278,45 +297,47 @@ static int mpegps_read_pes_header(AVFormatContext *s, ...@@ -278,45 +297,47 @@ static int mpegps_read_pes_header(AVFormatContext *s,
if ((c & 0xc0) == 0x40) { if ((c & 0xc0) == 0x40) {
/* buffer scale & size */ /* buffer scale & size */
avio_r8(s->pb); avio_r8(s->pb);
c = avio_r8(s->pb); c = avio_r8(s->pb);
len -= 2; len -= 2;
} }
if ((c & 0xe0) == 0x20) { if ((c & 0xe0) == 0x20) {
dts = pts = get_pts(s->pb, c); dts =
pts = get_pts(s->pb, c);
len -= 4; len -= 4;
if (c & 0x10){ if (c & 0x10) {
dts = get_pts(s->pb, -1); dts = get_pts(s->pb, -1);
len -= 5; len -= 5;
} }
} else if ((c & 0xc0) == 0x80) { } else if ((c & 0xc0) == 0x80) {
/* mpeg 2 PES */ /* mpeg 2 PES */
flags = avio_r8(s->pb); flags = avio_r8(s->pb);
header_len = avio_r8(s->pb); header_len = avio_r8(s->pb);
len -= 2; len -= 2;
if (header_len > len) if (header_len > len)
goto error_redo; goto error_redo;
len -= header_len; len -= header_len;
if (flags & 0x80) { if (flags & 0x80) {
dts = pts = get_pts(s->pb, -1); dts = pts = get_pts(s->pb, -1);
header_len -= 5; header_len -= 5;
if (flags & 0x40) { if (flags & 0x40) {
dts = get_pts(s->pb, -1); dts = get_pts(s->pb, -1);
header_len -= 5; header_len -= 5;
} }
} }
if (flags & 0x3f && header_len == 0){ if (flags & 0x3f && header_len == 0) {
flags &= 0xC0; flags &= 0xC0;
av_log(s, AV_LOG_WARNING, "Further flags set but no bytes left\n"); av_log(s, AV_LOG_WARNING, "Further flags set but no bytes left\n");
} }
if (flags & 0x01) { /* PES extension */ if (flags & 0x01) { /* PES extension */
pes_ext = avio_r8(s->pb); pes_ext = avio_r8(s->pb);
header_len--; header_len--;
/* Skip PES private data, program packet sequence counter and P-STD buffer */ /* Skip PES private data, program packet sequence counter
skip = (pes_ext >> 4) & 0xb; * and P-STD buffer */
skip = (pes_ext >> 4) & 0xb;
skip += skip & 0x9; skip += skip & 0x9;
if (pes_ext & 0x40 || skip > header_len){ if (pes_ext & 0x40 || skip > header_len) {
av_log(s, AV_LOG_WARNING, "pes_ext %X is invalid\n", pes_ext); av_log(s, AV_LOG_WARNING, "pes_ext %X is invalid\n", pes_ext);
pes_ext=skip=0; pes_ext = skip = 0;
} }
avio_skip(s->pb, skip); avio_skip(s->pb, skip);
header_len -= skip; header_len -= skip;
...@@ -332,11 +353,10 @@ static int mpegps_read_pes_header(AVFormatContext *s, ...@@ -332,11 +353,10 @@ static int mpegps_read_pes_header(AVFormatContext *s,
} }
} }
} }
if(header_len < 0) if (header_len < 0)
goto error_redo; goto error_redo;
avio_skip(s->pb, header_len); avio_skip(s->pb, header_len);
} } else if (c != 0xf)
else if( c!= 0xf )
goto redo; goto redo;
if (startcode == PRIVATE_STREAM_1 && !m->psm_es_type[startcode & 0xff]) { if (startcode == PRIVATE_STREAM_1 && !m->psm_es_type[startcode & 0xff]) {
...@@ -355,22 +375,23 @@ static int mpegps_read_pes_header(AVFormatContext *s, ...@@ -355,22 +375,23 @@ static int mpegps_read_pes_header(AVFormatContext *s,
} }
} }
} }
if(len<0) if (len < 0)
goto error_redo; goto error_redo;
if(dts != AV_NOPTS_VALUE && ppos){ if (dts != AV_NOPTS_VALUE && ppos) {
int i; int i;
for(i=0; i<s->nb_streams; i++){ for (i = 0; i < s->nb_streams; i++) {
if(startcode == s->streams[i]->id && if (startcode == s->streams[i]->id &&
s->pb->seekable /* index useless on streams anyway */) { s->pb->seekable /* index useless on streams anyway */) {
ff_reduce_index(s, i); ff_reduce_index(s, i);
av_add_index_entry(s->streams[i], *ppos, dts, 0, 0, AVINDEX_KEYFRAME /* FIXME keyframe? */); av_add_index_entry(s->streams[i], *ppos, dts, 0, 0,
AVINDEX_KEYFRAME /* FIXME keyframe? */);
} }
} }
} }
*pstart_code = startcode; *pstart_code = startcode;
*ppts = pts; *ppts = pts;
*pdts = dts; *pdts = dts;
return len; return len;
} }
...@@ -382,106 +403,111 @@ static int mpegps_read_packet(AVFormatContext *s, ...@@ -382,106 +403,111 @@ static int mpegps_read_packet(AVFormatContext *s,
int len, startcode, i, es_type, ret; int len, startcode, i, es_type, ret;
enum AVCodecID codec_id = AV_CODEC_ID_NONE; enum AVCodecID codec_id = AV_CODEC_ID_NONE;
enum AVMediaType type; enum AVMediaType type;
int64_t pts, dts, dummy_pos; //dummy_pos is needed for the index building to work int64_t pts, dts, dummy_pos; // dummy_pos is needed for the index building to work
uint8_t av_uninit(dvdaudio_substream_type); uint8_t av_uninit(dvdaudio_substream_type);
redo: redo:
len = mpegps_read_pes_header(s, &dummy_pos, &startcode, &pts, &dts); len = mpegps_read_pes_header(s, &dummy_pos, &startcode, &pts, &dts);
if (len < 0) if (len < 0)
return len; return len;
if(startcode == 0x1bd) { if (startcode == 0x1bd) {
dvdaudio_substream_type = avio_r8(s->pb); dvdaudio_substream_type = avio_r8(s->pb);
avio_skip(s->pb, 3); avio_skip(s->pb, 3);
len -= 4; len -= 4;
} }
/* now find stream */ /* now find stream */
for(i=0;i<s->nb_streams;i++) { for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i]; st = s->streams[i];
if (st->id == startcode) if (st->id == startcode)
goto found; goto found;
} }
es_type = m->psm_es_type[startcode & 0xff]; es_type = m->psm_es_type[startcode & 0xff];
if(es_type > 0 && es_type != STREAM_TYPE_PRIVATE_DATA){ if (es_type > 0 && es_type != STREAM_TYPE_PRIVATE_DATA) {
if(es_type == STREAM_TYPE_VIDEO_MPEG1){ if (es_type == STREAM_TYPE_VIDEO_MPEG1) {
codec_id = AV_CODEC_ID_MPEG2VIDEO; codec_id = AV_CODEC_ID_MPEG2VIDEO;
type = AVMEDIA_TYPE_VIDEO; type = AVMEDIA_TYPE_VIDEO;
} else if(es_type == STREAM_TYPE_VIDEO_MPEG2){ } else if (es_type == STREAM_TYPE_VIDEO_MPEG2) {
codec_id = AV_CODEC_ID_MPEG2VIDEO; codec_id = AV_CODEC_ID_MPEG2VIDEO;
type = AVMEDIA_TYPE_VIDEO; type = AVMEDIA_TYPE_VIDEO;
} else if(es_type == STREAM_TYPE_AUDIO_MPEG1 || } else if (es_type == STREAM_TYPE_AUDIO_MPEG1 ||
es_type == STREAM_TYPE_AUDIO_MPEG2){ es_type == STREAM_TYPE_AUDIO_MPEG2) {
codec_id = AV_CODEC_ID_MP3; codec_id = AV_CODEC_ID_MP3;
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
} else if(es_type == STREAM_TYPE_AUDIO_AAC){ } else if (es_type == STREAM_TYPE_AUDIO_AAC) {
codec_id = AV_CODEC_ID_AAC; codec_id = AV_CODEC_ID_AAC;
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
} else if(es_type == STREAM_TYPE_VIDEO_MPEG4){ } else if (es_type == STREAM_TYPE_VIDEO_MPEG4) {
codec_id = AV_CODEC_ID_MPEG4; codec_id = AV_CODEC_ID_MPEG4;
type = AVMEDIA_TYPE_VIDEO; type = AVMEDIA_TYPE_VIDEO;
} else if(es_type == STREAM_TYPE_VIDEO_H264){ } else if (es_type == STREAM_TYPE_VIDEO_H264) {
codec_id = AV_CODEC_ID_H264; codec_id = AV_CODEC_ID_H264;
type = AVMEDIA_TYPE_VIDEO; type = AVMEDIA_TYPE_VIDEO;
} else if(es_type == STREAM_TYPE_AUDIO_AC3){ } else if (es_type == STREAM_TYPE_AUDIO_AC3) {
codec_id = AV_CODEC_ID_AC3; codec_id = AV_CODEC_ID_AC3;
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
} else { } else {
goto skip; goto skip;
} }
} else if (startcode >= 0x1e0 && startcode <= 0x1ef) { } else if (startcode >= 0x1e0 && startcode <= 0x1ef) {
static const unsigned char avs_seqh[4] = { 0, 0, 1, 0xb0 }; static const unsigned char avs_seqh[4] = { 0, 0, 1, 0xb0 };
unsigned char buf[8]; unsigned char buf[8];
avio_read(s->pb, buf, 8); avio_read(s->pb, buf, 8);
avio_seek(s->pb, -8, SEEK_CUR); avio_seek(s->pb, -8, SEEK_CUR);
if(!memcmp(buf, avs_seqh, 4) && (buf[6] != 0 || buf[7] != 1)) if (!memcmp(buf, avs_seqh, 4) && (buf[6] != 0 || buf[7] != 1))
codec_id = AV_CODEC_ID_CAVS; codec_id = AV_CODEC_ID_CAVS;
else else
codec_id = AV_CODEC_ID_PROBE; codec_id = AV_CODEC_ID_PROBE;
type = AVMEDIA_TYPE_VIDEO; type = AVMEDIA_TYPE_VIDEO;
} else if (startcode >= 0x1c0 && startcode <= 0x1df) { } else if (startcode >= 0x1c0 && startcode <= 0x1df) {
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
codec_id = m->sofdec > 0 ? AV_CODEC_ID_ADPCM_ADX : AV_CODEC_ID_MP2; codec_id = m->sofdec > 0 ? AV_CODEC_ID_ADPCM_ADX : AV_CODEC_ID_MP2;
} else if (startcode >= 0x80 && startcode <= 0x87) { } else if (startcode >= 0x80 && startcode <= 0x87) {
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
codec_id = AV_CODEC_ID_AC3; codec_id = AV_CODEC_ID_AC3;
} else if ( ( startcode >= 0x88 && startcode <= 0x8f) } else if ((startcode >= 0x88 && startcode <= 0x8f) ||
||( startcode >= 0x98 && startcode <= 0x9f)) { (startcode >= 0x98 && startcode <= 0x9f)) {
/* 0x90 - 0x97 is reserved for SDDS in DVD specs */ /* 0x90 - 0x97 is reserved for SDDS in DVD specs */
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
codec_id = AV_CODEC_ID_DTS; codec_id = AV_CODEC_ID_DTS;
} else if (startcode >= 0xa0 && startcode <= 0xaf) { } else if (startcode >= 0xa0 && startcode <= 0xaf) {
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
codec_id = AV_CODEC_ID_PCM_DVD; codec_id = AV_CODEC_ID_PCM_DVD;
} else if (startcode >= 0xb0 && startcode <= 0xbf) { } else if (startcode >= 0xb0 && startcode <= 0xbf) {
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
codec_id = AV_CODEC_ID_TRUEHD; codec_id = AV_CODEC_ID_TRUEHD;
} else if (startcode >= 0xc0 && startcode <= 0xcf) { } else if (startcode >= 0xc0 && startcode <= 0xcf) {
/* Used for both AC-3 and E-AC-3 in EVOB files */ /* Used for both AC-3 and E-AC-3 in EVOB files */
type = AVMEDIA_TYPE_AUDIO; type = AVMEDIA_TYPE_AUDIO;
codec_id = AV_CODEC_ID_AC3; codec_id = AV_CODEC_ID_AC3;
} else if (startcode >= 0x20 && startcode <= 0x3f) { }