aiff: don't skip block_align==0 check on COMM-after-SSND files.

[ffmpeg] / libavformat / mp3dec.c

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index c06969b058e2137cf8b72c681ae5aa93d261bc83..11f57ce1a9f1a52e04d38dfcb1fb6df6f08685bb 100644 (file)
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -2,26 +2,29 @@
  * MP3 demuxer
  * Copyright (c) 2003 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 "libavutil/avstring.h"
 #include "libavutil/intreadwrite.h"
+#include "libavutil/dict.h"
+#include "libavutil/mathematics.h"
 #include "avformat.h"
+#include "internal.h"
 #include "id3v2.h"
 #include "id3v1.h"
 #include "libavcodec/mpegaudiodecheader.h"
@@ -49,7 +52,7 @@ static int mp3_read_probe(AVProbeData *p)
 
         for(frames = 0; buf2 < end; frames++) {
             header = AV_RB32(buf2);
-            fsize = ff_mpa_decode_header(&avctx, header, &sample_rate, &sample_rate, &sample_rate, &sample_rate);
+            fsize = avpriv_mpa_decode_header(&avctx, header, &sample_rate, &sample_rate, &sample_rate, &sample_rate);
             if(fsize < 0)
                 break;
             buf2 += fsize;
@@ -80,36 +83,36 @@ static int mp3_parse_vbr_tags(AVFormatContext *s, AVStream *st, int64_t base)
     MPADecodeHeader c;
     int vbrtag_size = 0;
 
-    v = get_be32(s->pb);
+    v = avio_rb32(s->pb);
     if(ff_mpa_check_header(v) < 0)
       return -1;
 
-    if (ff_mpegaudio_decode_header(&c, v) == 0)
+    if (avpriv_mpegaudio_decode_header(&c, v) == 0)
         vbrtag_size = c.frame_size;
     if(c.layer != 3)
         return -1;
 
     /* Check for Xing / Info tag */
-    url_fseek(s->pb, xing_offtbl[c.lsf == 1][c.nb_channels == 1], SEEK_CUR);
-    v = get_be32(s->pb);
+    avio_skip(s->pb, xing_offtbl[c.lsf == 1][c.nb_channels == 1]);
+    v = avio_rb32(s->pb);
     if(v == MKBETAG('X', 'i', 'n', 'g') || v == MKBETAG('I', 'n', 'f', 'o')) {
-        v = get_be32(s->pb);
+        v = avio_rb32(s->pb);
         if(v & 0x1)
-            frames = get_be32(s->pb);
+            frames = avio_rb32(s->pb);
         if(v & 0x2)
-            size = get_be32(s->pb);
+            size = avio_rb32(s->pb);
     }
 
     /* Check for VBRI tag (always 32 bytes after end of mpegaudio header) */
-    url_fseek(s->pb, base + 4 + 32, SEEK_SET);
-    v = get_be32(s->pb);
+    avio_seek(s->pb, base + 4 + 32, SEEK_SET);
+    v = avio_rb32(s->pb);
     if(v == MKBETAG('V', 'B', 'R', 'I')) {
         /* Check tag version */
-        if(get_be16(s->pb) == 1) {
+        if(avio_rb16(s->pb) == 1) {
             /* skip delay and quality */
-            url_fseek(s->pb, 4, SEEK_CUR);
-            frames = get_be32(s->pb);
-            size = get_be32(s->pb);
+            avio_skip(s->pb, 4);
+            frames = avio_rb32(s->pb);
+            size = avio_rb32(s->pb);
         }
     }
 
@@ -117,7 +120,7 @@ static int mp3_parse_vbr_tags(AVFormatContext *s, AVStream *st, int64_t base)
         return -1;
 
     /* Skip the vbr tag frame */
-    url_fseek(s->pb, base + vbrtag_size, SEEK_SET);
+    avio_seek(s->pb, base + vbrtag_size, SEEK_SET);
 
     spf = c.lsf ? 576 : 1152; /* Samples per frame, layer 3 */
     if(frames)
@@ -129,13 +132,12 @@ static int mp3_parse_vbr_tags(AVFormatContext *s, AVStream *st, int64_t base)
     return 0;
 }
 
-static int mp3_read_header(AVFormatContext *s,
-                           AVFormatParameters *ap)
+static int mp3_read_header(AVFormatContext *s)
 {
     AVStream *st;
     int64_t off;
 
-    st = av_new_stream(s, 0);
+    st = avformat_new_stream(s, NULL);
     if (!st)
         return AVERROR(ENOMEM);
 
@@ -145,15 +147,15 @@ static int mp3_read_header(AVFormatContext *s,
     st->start_time = 0;
 
     // lcm of all mp3 sample rates
-    av_set_pts_info(st, 64, 1, 14112000);
+    avpriv_set_pts_info(st, 64, 1, 14112000);
 
-    off = url_ftell(s->pb);
+    off = avio_tell(s->pb);
 
-    if (!av_metadata_get(s->metadata, "", NULL, AV_METADATA_IGNORE_SUFFIX))
+    if (!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
         ff_id3v1_read(s);
 
     if (mp3_parse_vbr_tags(s, st, off) < 0)
-        url_fseek(s->pb, off, SEEK_SET);
+        avio_seek(s->pb, off, SEEK_SET);
 
     /* the parameters will be extracted from the compressed bitstream */
     return 0;
@@ -185,13 +187,12 @@ static int mp3_read_packet(AVFormatContext *s, AVPacket *pkt)
     return ret;
 }
 
-AVInputFormat mp3_demuxer = {
-    "mp3",
-    NULL_IF_CONFIG_SMALL("MPEG audio layer 2/3"),
-    0,
-    mp3_read_probe,
-    mp3_read_header,
-    mp3_read_packet,
+AVInputFormat ff_mp3_demuxer = {
+    .name           = "mp3",
+    .long_name      = NULL_IF_CONFIG_SMALL("MPEG audio layer 2/3"),
+    .read_probe     = mp3_read_probe,
+    .read_header    = mp3_read_header,
+    .read_packet    = mp3_read_packet,
     .flags= AVFMT_GENERIC_INDEX,
     .extensions = "mp2,mp3,m2a", /* XXX: use probe */
 };