X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fmpeg.c;h=7430bb011309224b1b5496055a146f6981d83fcd;hb=4127e6aeb6e9ef53f5acf06e99c06f4b2c0cce34;hp=0c43a5ec5dc55003b8d0becbb4d387794904bc15;hpb=406792e7b0f15627411728829c7a2de86fcbe96b;p=ffmpeg

diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c
index 0c43a5ec5dc..7430bb01130 100644
--- a/libavformat/mpeg.c
+++ b/libavformat/mpeg.c
@@ -2,28 +2,27 @@
  * MPEG1/2 demuxer
  * 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 "avformat.h"
+#include "internal.h"
 #include "mpeg.h"
 
-//#define DEBUG_SEEK
-
 #undef NDEBUG
 #include <assert.h>
 
@@ -42,16 +41,18 @@ static int check_pes(uint8_t *p, uint8_t *end){
     if((*p&0xC0) == 0x40) p+=2;
     if((*p&0xF0) == 0x20){
         pes1= p[0]&p[2]&p[4]&1;
-        p+=5;
     }else if((*p&0xF0) == 0x30){
         pes1= p[0]&p[2]&p[4]&p[5]&p[7]&p[9]&1;
-        p+=10;
     }else
         pes1 = *p == 0x0F;
 
     return pes1||pes2;
 }
 
+static int check_pack_header(const uint8_t *buf) {
+    return (buf[1] & 0xC0) == 0x40 || (buf[1] & 0xF0) == 0x20;
+}
+
 static int mpegps_probe(AVProbeData *p)
 {
     uint32_t code= -1;
@@ -62,31 +63,36 @@ static int mpegps_probe(AVProbeData *p)
     for(i=0; i<p->buf_size; i++){
         code = (code<<8) + p->buf[i];
         if ((code & 0xffffff00) == 0x100) {
+            int len= p->buf[i+1] << 8 | p->buf[i+2];
             int pes= check_pes(p->buf+i, p->buf+p->buf_size);
+            int pack = check_pack_header(p->buf+i);
 
             if(code == SYSTEM_HEADER_START_CODE) sys++;
-            else if(code == PRIVATE_STREAM_1)    priv1++;
-            else if(code == PACK_START_CODE)     pspack++;
+            else if(code == PACK_START_CODE && pack) pspack++;
             else if((code & 0xf0) == VIDEO_ID &&  pes) vid++;
-            else if((code & 0xe0) == AUDIO_ID &&  pes) audio++;
+            // skip pes payload to avoid start code emulation for private
+            // and audio streams
+            else if((code & 0xe0) == AUDIO_ID &&  pes) {audio++; i+=len;}
+            else if(code == PRIVATE_STREAM_1  &&  pes) {priv1++; 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 */
-        score= AVPROBE_SCORE_MAX/4;
+        score = AVPROBE_SCORE_EXTENSION / 2;
 
-//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d len:%d\n", sys, priv1, pspack,vid, audio, p->buf_size);
     if(sys>invalid && sys*9 <= pspack*10)
-        return AVPROBE_SCORE_MAX/2+2; // +1 for .mpg
-    if(priv1 + vid + audio > invalid && (priv1+vid+audio)*9 <= pspack*10)
-        return AVPROBE_SCORE_MAX/2+2; // +1 for .mpg
-    if((!!vid ^ !!audio) && (audio+vid > 1) && !sys && !pspack && p->buf_size>2048) /* PES stream */
-        return AVPROBE_SCORE_MAX/2+2;
+        return pspack > 2 ? AVPROBE_SCORE_EXTENSION + 2 : AVPROBE_SCORE_EXTENSION / 2; // 1 more than .mpg
+    if(pspack > invalid && (priv1+vid+audio)*10 >= pspack*9)
+        return pspack > 2 ? AVPROBE_SCORE_EXTENSION + 2 : AVPROBE_SCORE_EXTENSION / 2; // 1 more than .mpg
+    if((!!vid ^ !!audio) && (audio > 4 || vid > 1) && !sys && !pspack && p->buf_size>2048 && vid + audio > invalid) /* PES stream */
+        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;
 }
 
@@ -97,8 +103,7 @@ typedef struct MpegDemuxContext {
     int sofdec;
 } MpegDemuxContext;
 
-static int mpegps_read_header(AVFormatContext *s,
-                              AVFormatParameters *ap)
+static int mpegps_read_header(AVFormatContext *s)
 {
     MpegDemuxContext *m = s->priv_data;
     const char *sofdec = "Sofdec";
@@ -109,26 +114,28 @@ static int mpegps_read_header(AVFormatContext *s,
 
     m->sofdec = -1;
     do {
-        v = get_byte(s->pb);
+        v = avio_r8(s->pb);
         m->header_state = m->header_state << 8 | v;
         m->sofdec++;
     } while (v == sofdec[i] && i++ < 6);
 
+    m->sofdec = (m->sofdec == 6) ? 1 : 0;
+
     /* no need to do more */
     return 0;
 }
 
-static int64_t get_pts(ByteIOContext *pb, int c)
+static int64_t get_pts(AVIOContext *pb, int c)
 {
     uint8_t buf[5];
 
-    buf[0] = c<0 ? get_byte(pb) : c;
-    get_buffer(pb, buf+1, 4);
+    buf[0] = c<0 ? avio_r8(pb) : c;
+    avio_read(pb, buf+1, 4);
 
     return ff_parse_pes_pts(buf);
 }
 
-static int find_next_start_code(ByteIOContext *pb, int *size_ptr,
+static int find_next_start_code(AVIOContext *pb, int *size_ptr,
                                 int32_t *header_state)
 {
     unsigned int state, v;
@@ -137,9 +144,9 @@ static int find_next_start_code(ByteIOContext *pb, int *size_ptr,
     state = *header_state;
     n = *size_ptr;
     while (n > 0) {
-        if (url_feof(pb))
+        if (pb->eof_reached)
             break;
-        v = get_byte(pb);
+        v = avio_r8(pb);
         n--;
         if (state == 0x000001) {
             state = ((state << 8) | v) & 0xffffff;
@@ -155,72 +162,37 @@ static int find_next_start_code(ByteIOContext *pb, int *size_ptr,
     return val;
 }
 
-#if 0 /* unused, remove? */
-/* XXX: optimize */
-static int find_prev_start_code(ByteIOContext *pb, int *size_ptr)
-{
-    int64_t pos, pos_start;
-    int max_size, start_code;
-
-    max_size = *size_ptr;
-    pos_start = url_ftell(pb);
-
-    /* in order to go faster, we fill the buffer */
-    pos = pos_start - 16386;
-    if (pos < 0)
-        pos = 0;
-    url_fseek(pb, pos, SEEK_SET);
-    get_byte(pb);
-
-    pos = pos_start;
-    for(;;) {
-        pos--;
-        if (pos < 0 || (pos_start - pos) >= max_size) {
-            start_code = -1;
-            goto the_end;
-        }
-        url_fseek(pb, pos, SEEK_SET);
-        start_code = get_be32(pb);
-        if ((start_code & 0xffffff00) == 0x100)
-            break;
-    }
- the_end:
-    *size_ptr = pos_start - pos;
-    return start_code;
-}
-#endif
-
 /**
- * Extracts stream types from a program stream map
+ * Extract stream types from a program stream map
  * According to ISO/IEC 13818-1 ('MPEG-2 Systems') table 2-35
  *
  * @return number of bytes occupied by PSM in the bitstream
  */
-static long mpegps_psm_parse(MpegDemuxContext *m, ByteIOContext *pb)
+static long mpegps_psm_parse(MpegDemuxContext *m, AVIOContext *pb)
 {
     int psm_length, ps_info_length, es_map_length;
 
-    psm_length = get_be16(pb);
-    get_byte(pb);
-    get_byte(pb);
-    ps_info_length = get_be16(pb);
+    psm_length = avio_rb16(pb);
+    avio_r8(pb);
+    avio_r8(pb);
+    ps_info_length = avio_rb16(pb);
 
     /* skip program_stream_info */
-    url_fskip(pb, ps_info_length);
-    es_map_length = get_be16(pb);
+    avio_skip(pb, ps_info_length);
+    es_map_length = avio_rb16(pb);
 
     /* at least one es available? */
     while (es_map_length >= 4){
-        unsigned char type      = get_byte(pb);
-        unsigned char es_id     = get_byte(pb);
-        uint16_t es_info_length = get_be16(pb);
+        unsigned char type      = avio_r8(pb);
+        unsigned char es_id     = avio_r8(pb);
+        uint16_t es_info_length = avio_rb16(pb);
         /* remember mapping from stream id to stream type */
         m->psm_es_type[es_id] = type;
         /* skip program_stream_info */
-        url_fskip(pb, es_info_length);
+        avio_skip(pb, es_info_length);
         es_map_length -= 4 + es_info_length;
     }
-    get_be32(pb); /* crc32 */
+    avio_rb32(pb); /* crc32 */
     return 2 + psm_length;
 }
 
@@ -235,34 +207,38 @@ static int mpegps_read_pes_header(AVFormatContext *s,
     int len, size, startcode, c, flags, header_len;
     int pes_ext, ext2_len, id_ext, skip;
     int64_t pts, dts;
-    int64_t last_sync= url_ftell(s->pb);
+    int64_t last_sync= avio_tell(s->pb);
 
  error_redo:
-        url_fseek(s->pb, last_sync, SEEK_SET);
+        avio_seek(s->pb, last_sync, SEEK_SET);
  redo:
         /* next start code (should be immediately after) */
         m->header_state = 0xff;
         size = MAX_SYNC_SIZE;
         startcode = find_next_start_code(s->pb, &size, &m->header_state);
-        last_sync = url_ftell(s->pb);
-    //printf("startcode=%x pos=0x%"PRIx64"\n", startcode, url_ftell(s->pb));
-    if (startcode < 0)
-        return AVERROR(EIO);
+        last_sync = avio_tell(s->pb);
+    if (startcode < 0){
+        if(s->pb->eof_reached)
+            return AVERROR_EOF;
+        //FIXME we should remember header_state
+        return AVERROR(EAGAIN);
+    }
+
     if (startcode == PACK_START_CODE)
         goto redo;
     if (startcode == SYSTEM_HEADER_START_CODE)
         goto redo;
     if (startcode == PADDING_STREAM) {
-        url_fskip(s->pb, get_be16(s->pb));
+        avio_skip(s->pb, avio_rb16(s->pb));
         goto redo;
     }
     if (startcode == PRIVATE_STREAM_2) {
-        len = get_be16(s->pb);
+        len = avio_rb16(s->pb);
         if (!m->sofdec) {
             while (len-- >= 6) {
-                if (get_byte(s->pb) == 'S') {
+                if (avio_r8(s->pb) == 'S') {
                     uint8_t buf[5];
-                    get_buffer(s->pb, buf, sizeof(buf));
+                    avio_read(s->pb, buf, sizeof(buf));
                     m->sofdec = !memcmp(buf, "ofdec", 5);
                     len -= sizeof(buf);
                     break;
@@ -270,7 +246,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
             }
             m->sofdec -= !m->sofdec;
         }
-        url_fskip(s->pb, len);
+        avio_skip(s->pb, len);
         goto redo;
     }
     if (startcode == PROGRAM_STREAM_MAP) {
@@ -284,16 +260,16 @@ static int mpegps_read_pes_header(AVFormatContext *s,
           (startcode == 0x1bd) || (startcode == 0x1fd)))
         goto redo;
     if (ppos) {
-        *ppos = url_ftell(s->pb) - 4;
+        *ppos = avio_tell(s->pb) - 4;
     }
-    len = get_be16(s->pb);
+    len = avio_rb16(s->pb);
     pts =
     dts = AV_NOPTS_VALUE;
     /* stuffing */
     for(;;) {
         if (len < 1)
             goto error_redo;
-        c = get_byte(s->pb);
+        c = avio_r8(s->pb);
         len--;
         /* XXX: for mpeg1, should test only bit 7 */
         if (c != 0xff)
@@ -301,8 +277,8 @@ static int mpegps_read_pes_header(AVFormatContext *s,
     }
     if ((c & 0xc0) == 0x40) {
         /* buffer scale & size */
-        get_byte(s->pb);
-        c = get_byte(s->pb);
+        avio_r8(s->pb);
+        c = avio_r8(s->pb);
         len -= 2;
     }
     if ((c & 0xe0) == 0x20) {
@@ -314,14 +290,8 @@ static int mpegps_read_pes_header(AVFormatContext *s,
         }
     } else if ((c & 0xc0) == 0x80) {
         /* mpeg 2 PES */
-#if 0 /* some streams have this field set for no apparent reason */
-        if ((c & 0x30) != 0) {
-            /* Encrypted multiplex not handled */
-            goto redo;
-        }
-#endif
-        flags = get_byte(s->pb);
-        header_len = get_byte(s->pb);
+        flags = avio_r8(s->pb);
+        header_len = avio_r8(s->pb);
         len -= 2;
         if (header_len > len)
             goto error_redo;
@@ -339,7 +309,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
             av_log(s, AV_LOG_WARNING, "Further flags set but no bytes left\n");
         }
         if (flags & 0x01) { /* PES extension */
-            pes_ext = get_byte(s->pb);
+            pes_ext = avio_r8(s->pb);
             header_len--;
             /* Skip PES private data, program packet sequence counter and P-STD buffer */
             skip = (pes_ext >> 4) & 0xb;
@@ -348,14 +318,14 @@ static int mpegps_read_pes_header(AVFormatContext *s,
                 av_log(s, AV_LOG_WARNING, "pes_ext %X is invalid\n", pes_ext);
                 pes_ext=skip=0;
             }
-            url_fskip(s->pb, skip);
+            avio_skip(s->pb, skip);
             header_len -= skip;
 
             if (pes_ext & 0x01) { /* PES extension 2 */
-                ext2_len = get_byte(s->pb);
+                ext2_len = avio_r8(s->pb);
                 header_len--;
                 if ((ext2_len & 0x7f) > 0) {
-                    id_ext = get_byte(s->pb);
+                    id_ext = avio_r8(s->pb);
                     if ((id_ext & 0x80) == 0)
                         startcode = ((startcode & 0xff) << 8) | id_ext;
                     header_len--;
@@ -364,23 +334,23 @@ static int mpegps_read_pes_header(AVFormatContext *s,
         }
         if(header_len < 0)
             goto error_redo;
-        url_fskip(s->pb, header_len);
+        avio_skip(s->pb, header_len);
     }
     else if( c!= 0xf )
         goto redo;
 
     if (startcode == PRIVATE_STREAM_1 && !m->psm_es_type[startcode & 0xff]) {
-        startcode = get_byte(s->pb);
+        startcode = avio_r8(s->pb);
         len--;
         if (startcode >= 0x80 && startcode <= 0xcf) {
             /* audio: skip header */
-            get_byte(s->pb);
-            get_byte(s->pb);
-            get_byte(s->pb);
+            avio_r8(s->pb);
+            avio_r8(s->pb);
+            avio_r8(s->pb);
             len -= 3;
             if (startcode >= 0xb0 && startcode <= 0xbf) {
                 /* MLP/TrueHD audio has a 4-byte header */
-                get_byte(s->pb);
+                avio_r8(s->pb);
                 len--;
             }
         }
@@ -391,7 +361,7 @@ static int mpegps_read_pes_header(AVFormatContext *s,
         int i;
         for(i=0; i<s->nb_streams; i++){
             if(startcode == s->streams[i]->id &&
-               !url_is_streamed(s->pb) /* index useless on streams anyway */) {
+               s->pb->seekable /* index useless on streams anyway */) {
                 ff_reduce_index(s, i);
                 av_add_index_entry(s->streams[i], *ppos, dts, 0, 0, AVINDEX_KEYFRAME /* FIXME keyframe? */);
             }
@@ -409,16 +379,23 @@ static int mpegps_read_packet(AVFormatContext *s,
 {
     MpegDemuxContext *m = s->priv_data;
     AVStream *st;
-    int len, startcode, i, es_type;
-    enum CodecID codec_id = CODEC_ID_NONE;
-    enum CodecType type;
+    int len, startcode, i, es_type, ret;
+    enum AVCodecID codec_id = AV_CODEC_ID_NONE;
+    enum AVMediaType type;
     int64_t pts, dts, dummy_pos; //dummy_pos is needed for the index building to work
+    uint8_t av_uninit(dvdaudio_substream_type);
 
  redo:
     len = mpegps_read_pes_header(s, &dummy_pos, &startcode, &pts, &dts);
     if (len < 0)
         return len;
 
+    if(startcode == 0x1bd) {
+        dvdaudio_substream_type = avio_r8(s->pb);
+        avio_skip(s->pb, 3);
+        len -= 4;
+    }
+
     /* now find stream */
     for(i=0;i<s->nb_streams;i++) {
         st = s->streams[i];
@@ -427,121 +404,109 @@ static int mpegps_read_packet(AVFormatContext *s,
     }
 
     es_type = m->psm_es_type[startcode & 0xff];
-    if(es_type > 0){
+    if(es_type > 0 && es_type != STREAM_TYPE_PRIVATE_DATA){
         if(es_type == STREAM_TYPE_VIDEO_MPEG1){
-            codec_id = CODEC_ID_MPEG2VIDEO;
-            type = CODEC_TYPE_VIDEO;
+            codec_id = AV_CODEC_ID_MPEG2VIDEO;
+            type = AVMEDIA_TYPE_VIDEO;
         } else if(es_type == STREAM_TYPE_VIDEO_MPEG2){
-            codec_id = CODEC_ID_MPEG2VIDEO;
-            type = CODEC_TYPE_VIDEO;
+            codec_id = AV_CODEC_ID_MPEG2VIDEO;
+            type = AVMEDIA_TYPE_VIDEO;
         } else if(es_type == STREAM_TYPE_AUDIO_MPEG1 ||
                   es_type == STREAM_TYPE_AUDIO_MPEG2){
-            codec_id = CODEC_ID_MP3;
-            type = CODEC_TYPE_AUDIO;
+            codec_id = AV_CODEC_ID_MP3;
+            type = AVMEDIA_TYPE_AUDIO;
         } else if(es_type == STREAM_TYPE_AUDIO_AAC){
-            codec_id = CODEC_ID_AAC;
-            type = CODEC_TYPE_AUDIO;
+            codec_id = AV_CODEC_ID_AAC;
+            type = AVMEDIA_TYPE_AUDIO;
         } else if(es_type == STREAM_TYPE_VIDEO_MPEG4){
-            codec_id = CODEC_ID_MPEG4;
-            type = CODEC_TYPE_VIDEO;
+            codec_id = AV_CODEC_ID_MPEG4;
+            type = AVMEDIA_TYPE_VIDEO;
         } else if(es_type == STREAM_TYPE_VIDEO_H264){
-            codec_id = CODEC_ID_H264;
-            type = CODEC_TYPE_VIDEO;
+            codec_id = AV_CODEC_ID_H264;
+            type = AVMEDIA_TYPE_VIDEO;
         } else if(es_type == STREAM_TYPE_AUDIO_AC3){
-            codec_id = CODEC_ID_AC3;
-            type = CODEC_TYPE_AUDIO;
+            codec_id = AV_CODEC_ID_AC3;
+            type = AVMEDIA_TYPE_AUDIO;
         } else {
             goto skip;
         }
     } else if (startcode >= 0x1e0 && startcode <= 0x1ef) {
         static const unsigned char avs_seqh[4] = { 0, 0, 1, 0xb0 };
         unsigned char buf[8];
-        get_buffer(s->pb, buf, 8);
-        url_fseek(s->pb, -8, SEEK_CUR);
+        avio_read(s->pb, buf, 8);
+        avio_seek(s->pb, -8, SEEK_CUR);
         if(!memcmp(buf, avs_seqh, 4) && (buf[6] != 0 || buf[7] != 1))
-            codec_id = CODEC_ID_CAVS;
+            codec_id = AV_CODEC_ID_CAVS;
         else
-            codec_id = CODEC_ID_PROBE;
-        type = CODEC_TYPE_VIDEO;
+            codec_id = AV_CODEC_ID_PROBE;
+        type = AVMEDIA_TYPE_VIDEO;
     } else if (startcode >= 0x1c0 && startcode <= 0x1df) {
-        type = CODEC_TYPE_AUDIO;
-        codec_id = m->sofdec > 0 ? CODEC_ID_ADPCM_ADX : CODEC_ID_MP2;
+        type = AVMEDIA_TYPE_AUDIO;
+        codec_id = m->sofdec > 0 ? AV_CODEC_ID_ADPCM_ADX : AV_CODEC_ID_MP2;
     } else if (startcode >= 0x80 && startcode <= 0x87) {
-        type = CODEC_TYPE_AUDIO;
-        codec_id = CODEC_ID_AC3;
+        type = AVMEDIA_TYPE_AUDIO;
+        codec_id = AV_CODEC_ID_AC3;
     } else if (  ( startcode >= 0x88 && startcode <= 0x8f)
                ||( startcode >= 0x98 && startcode <= 0x9f)) {
         /* 0x90 - 0x97 is reserved for SDDS in DVD specs */
-        type = CODEC_TYPE_AUDIO;
-        codec_id = CODEC_ID_DTS;
+        type = AVMEDIA_TYPE_AUDIO;
+        codec_id = AV_CODEC_ID_DTS;
     } else if (startcode >= 0xa0 && startcode <= 0xaf) {
-        type = CODEC_TYPE_AUDIO;
-        /* 16 bit form will be handled as CODEC_ID_PCM_S16BE */
-        codec_id = CODEC_ID_PCM_DVD;
+        type = AVMEDIA_TYPE_AUDIO;
+        codec_id = AV_CODEC_ID_PCM_DVD;
     } else if (startcode >= 0xb0 && startcode <= 0xbf) {
-        type = CODEC_TYPE_AUDIO;
-        codec_id = CODEC_ID_MLP;
+        type = AVMEDIA_TYPE_AUDIO;
+        codec_id = AV_CODEC_ID_TRUEHD;
     } else if (startcode >= 0xc0 && startcode <= 0xcf) {
         /* Used for both AC-3 and E-AC-3 in EVOB files */
-        type = CODEC_TYPE_AUDIO;
-        codec_id = CODEC_ID_AC3;
+        type = AVMEDIA_TYPE_AUDIO;
+        codec_id = AV_CODEC_ID_AC3;
     } else if (startcode >= 0x20 && startcode <= 0x3f) {
-        type = CODEC_TYPE_SUBTITLE;
-        codec_id = CODEC_ID_DVD_SUBTITLE;
+        type = AVMEDIA_TYPE_SUBTITLE;
+        codec_id = AV_CODEC_ID_DVD_SUBTITLE;
     } else if (startcode >= 0xfd55 && startcode <= 0xfd5f) {
-        type = CODEC_TYPE_VIDEO;
-        codec_id = CODEC_ID_VC1;
+        type = AVMEDIA_TYPE_VIDEO;
+        codec_id = AV_CODEC_ID_VC1;
+    } else if (startcode == 0x1bd) {
+        // check dvd audio substream type
+        type = AVMEDIA_TYPE_AUDIO;
+        switch(dvdaudio_substream_type & 0xe0) {
+        case 0xa0:  codec_id = AV_CODEC_ID_PCM_DVD;
+                    break;
+        case 0x80:  if((dvdaudio_substream_type & 0xf8) == 0x88)
+                         codec_id = AV_CODEC_ID_DTS;
+                    else codec_id = AV_CODEC_ID_AC3;
+                    break;
+        default:    av_log(s, AV_LOG_ERROR, "Unknown 0x1bd sub-stream\n");
+                    goto skip;
+        }
     } else {
     skip:
         /* skip packet */
-        url_fskip(s->pb, len);
+        avio_skip(s->pb, len);
         goto redo;
     }
     /* no stream found: add a new stream */
-    st = av_new_stream(s, startcode);
+    st = avformat_new_stream(s, NULL);
     if (!st)
         goto skip;
+    st->id = startcode;
     st->codec->codec_type = type;
     st->codec->codec_id = codec_id;
-    if (codec_id != CODEC_ID_PCM_S16BE)
-        st->need_parsing = AVSTREAM_PARSE_FULL;
+    st->need_parsing = AVSTREAM_PARSE_FULL;
  found:
     if(st->discard >= AVDISCARD_ALL)
         goto skip;
-    if (startcode >= 0xa0 && startcode <= 0xaf) {
-        int b1, freq;
-
-        /* for LPCM, we just skip the header and consider it is raw
-           audio data */
-        if (len <= 3)
-            goto skip;
-        get_byte(s->pb); /* emphasis (1), muse(1), reserved(1), frame number(5) */
-        b1 = get_byte(s->pb); /* quant (2), freq(2), reserved(1), channels(3) */
-        get_byte(s->pb); /* dynamic range control (0x80 = off) */
-        len -= 3;
-        freq = (b1 >> 4) & 3;
-        st->codec->sample_rate = lpcm_freq_tab[freq];
-        st->codec->channels = 1 + (b1 & 7);
-        st->codec->bits_per_coded_sample = 16 + ((b1 >> 6) & 3) * 4;
-        st->codec->bit_rate = st->codec->channels *
-                              st->codec->sample_rate *
-                              st->codec->bits_per_coded_sample;
-        if (st->codec->bits_per_coded_sample == 16)
-            st->codec->codec_id = CODEC_ID_PCM_S16BE;
-        else if (st->codec->bits_per_coded_sample == 28)
-            return AVERROR(EINVAL);
-    }
-    av_new_packet(pkt, len);
-    get_buffer(s->pb, pkt->data, pkt->size);
+    ret = av_get_packet(s->pb, pkt, len);
     pkt->pts = pts;
     pkt->dts = dts;
+    pkt->pos = dummy_pos;
     pkt->stream_index = st->index;
-#if 0
-    av_log(s, AV_LOG_DEBUG, "%d: pts=%0.3f dts=%0.3f size=%d\n",
-           pkt->stream_index, pkt->pts / 90000.0, pkt->dts / 90000.0, pkt->size);
-#endif
+    av_dlog(s, "%d: pts=%0.3f dts=%0.3f size=%d\n",
+            pkt->stream_index, pkt->pts / 90000.0, pkt->dts / 90000.0,
+            pkt->size);
 
-    return 0;
+    return (ret < 0) ? ret : 0;
 }
 
 static int64_t mpegps_read_dts(AVFormatContext *s, int stream_index,
@@ -551,42 +516,34 @@ static int64_t mpegps_read_dts(AVFormatContext *s, int stream_index,
     int64_t pos, pts, dts;
 
     pos = *ppos;
-#ifdef DEBUG_SEEK
-    printf("read_dts: pos=0x%"PRIx64" next=%d -> ", pos, find_next);
-#endif
-    if (url_fseek(s->pb, pos, SEEK_SET) < 0)
+    if (avio_seek(s->pb, pos, SEEK_SET) < 0)
         return AV_NOPTS_VALUE;
 
     for(;;) {
         len = mpegps_read_pes_header(s, &pos, &startcode, &pts, &dts);
         if (len < 0) {
-#ifdef DEBUG_SEEK
-            printf("none (ret=%d)\n", len);
-#endif
+            av_dlog(s, "none (ret=%d)\n", len);
             return AV_NOPTS_VALUE;
         }
         if (startcode == s->streams[stream_index]->id &&
             dts != AV_NOPTS_VALUE) {
             break;
         }
-        url_fskip(s->pb, len);
+        avio_skip(s->pb, len);
     }
-#ifdef DEBUG_SEEK
-    printf("pos=0x%"PRIx64" dts=0x%"PRIx64" %0.3f\n", pos, dts, dts / 90000.0);
-#endif
+    av_dlog(s, "pos=0x%"PRIx64" dts=0x%"PRIx64" %0.3f\n",
+            pos, dts, dts / 90000.0);
     *ppos = pos;
     return dts;
 }
 
-AVInputFormat mpegps_demuxer = {
-    "mpeg",
-    NULL_IF_CONFIG_SMALL("MPEG-PS format"),
-    sizeof(MpegDemuxContext),
-    mpegps_probe,
-    mpegps_read_header,
-    mpegps_read_packet,
-    NULL,
-    NULL, //mpegps_read_seek,
-    mpegps_read_dts,
-    .flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
+AVInputFormat ff_mpegps_demuxer = {
+    .name           = "mpeg",
+    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-PS (MPEG-2 Program Stream)"),
+    .priv_data_size = sizeof(MpegDemuxContext),
+    .read_probe     = mpegps_probe,
+    .read_header    = mpegps_read_header,
+    .read_packet    = mpegps_read_packet,
+    .read_timestamp = mpegps_read_dts,
+    .flags          = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
 };