ape: check that number of seektable entries is equal to number of frames

[ffmpeg] / libavformat / apetag.c

diff --git a/libavformat/apetag.c b/libavformat/apetag.c
index d30c13222a637738c6958388e0ce9bbe586c6f5c..b8a460a5992172cab68553532f13b7f700613ee8 100644 (file)
--- a/libavformat/apetag.c
+++ b/libavformat/apetag.c
@@ -3,20 +3,20 @@
  * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org>
  *  based upon libdemac from Dave Chapman.
  *
- * 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
  */
 
@@ -33,15 +33,15 @@
 
 static int ape_tag_read_field(AVFormatContext *s)
 {
-    ByteIOContext *pb = s->pb;
+    AVIOContext *pb = s->pb;
     uint8_t key[1024], *value;
     uint32_t size, flags;
     int i, c;
 
-    size = get_le32(pb);  /* field size */
-    flags = get_le32(pb); /* field flags */
+    size = avio_rl32(pb);  /* field size */
+    flags = avio_rl32(pb); /* field flags */
     for (i = 0; i < sizeof(key) - 1; i++) {
-        c = get_byte(pb);
+        c = avio_r8(pb);
         if (c < 0x20 || c > 0x7E)
             break;
         else
@@ -57,7 +57,7 @@ static int ape_tag_read_field(AVFormatContext *s)
     value = av_malloc(size+1);
     if (!value)
         return AVERROR(ENOMEM);
-    get_buffer(pb, value, size);
+    avio_read(pb, value, size);
     value[size] = 0;
     av_metadata_set2(&s->metadata, key, value, AV_METADATA_DONT_STRDUP_VAL);
     return 0;
@@ -65,8 +65,8 @@ static int ape_tag_read_field(AVFormatContext *s)
 
 void ff_ape_parse_tag(AVFormatContext *s)
 {
-    ByteIOContext *pb = s->pb;
-    int file_size = url_fsize(pb);
+    AVIOContext *pb = s->pb;
+    int file_size = avio_size(pb);
     uint32_t val, fields, tag_bytes;
     uint8_t buf[8];
     int i;
@@ -74,38 +74,38 @@ void ff_ape_parse_tag(AVFormatContext *s)
     if (file_size < APE_TAG_FOOTER_BYTES)
         return;
 
-    url_fseek(pb, file_size - APE_TAG_FOOTER_BYTES, SEEK_SET);
+    avio_seek(pb, file_size - APE_TAG_FOOTER_BYTES, SEEK_SET);
 
-    get_buffer(pb, buf, 8);    /* APETAGEX */
+    avio_read(pb, buf, 8);     /* APETAGEX */
     if (strncmp(buf, "APETAGEX", 8)) {
         return;
     }
 
-    val = get_le32(pb);        /* APE tag version */
+    val = avio_rl32(pb);       /* APE tag version */
     if (val > APE_TAG_VERSION) {
         av_log(s, AV_LOG_ERROR, "Unsupported tag version. (>=%d)\n", APE_TAG_VERSION);
         return;
     }
 
-    tag_bytes = get_le32(pb);  /* tag size */
+    tag_bytes = avio_rl32(pb); /* tag size */
     if (tag_bytes - APE_TAG_FOOTER_BYTES > (1024 * 1024 * 16)) {
         av_log(s, AV_LOG_ERROR, "Tag size is way too big\n");
         return;
     }
 
-    fields = get_le32(pb);     /* number of fields */
+    fields = avio_rl32(pb);    /* number of fields */
     if (fields > 65536) {
         av_log(s, AV_LOG_ERROR, "Too many tag fields (%d)\n", fields);
         return;
     }
 
-    val = get_le32(pb);        /* flags */
+    val = avio_rl32(pb);       /* flags */
     if (val & APE_TAG_FLAG_IS_HEADER) {
         av_log(s, AV_LOG_ERROR, "APE Tag is a header\n");
         return;
     }
 
-    url_fseek(pb, file_size - tag_bytes, SEEK_SET);
+    avio_seek(pb, file_size - tag_bytes, SEEK_SET);
 
     for (i=0; i<fields; i++)
         if (ape_tag_read_field(s) < 0) break;