Merge commit '8563f9887194b07c972c3475d6b51592d77f73f7'

[ffmpeg] / libavformat / mp3dec.c

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index 95b70f7c29464b09a90526f7c084633e08f8b3bb..c76b21ebd644c79b5163b08243c334e5d81428a3 100644 (file)
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -64,13 +64,9 @@ static int check(AVIOContext *pb, int64_t pos, uint32_t *header);
 static int mp3_read_probe(AVProbeData *p)
 {
     int max_frames, first_frames = 0;
-    int fsize, frames;
+    int frames, ret;
     uint32_t header;
     const uint8_t *buf, *buf0, *buf2, *end;
-    AVCodecContext *avctx = avcodec_alloc_context3(NULL);
-
-    if (!avctx)
-        return AVERROR(ENOMEM);
 
     buf0 = p->buf;
     end = p->buf + p->buf_size - sizeof(uint32_t);
@@ -82,23 +78,19 @@ static int mp3_read_probe(AVProbeData *p)
 
     for(; buf < end; buf= buf2+1) {
         buf2 = buf;
-        if(ff_mpa_check_header(AV_RB32(buf2)))
-            continue;
-
         for(frames = 0; buf2 < end; frames++) {
-            int dummy;
+            MPADecodeHeader h;
+
             header = AV_RB32(buf2);
-            fsize = avpriv_mpa_decode_header(avctx, header,
-                                             &dummy, &dummy, &dummy, &dummy);
-            if(fsize < 0)
+            ret = avpriv_mpegaudio_decode_header(&h, header);
+            if (ret != 0)
                 break;
-            buf2 += fsize;
+            buf2 += h.frame_size;
         }
         max_frames = FFMAX(max_frames, frames);
         if(buf == buf0)
             first_frames= frames;
     }
-    avcodec_free_context(&avctx);
     // keep this in sync with ac3 probe, both need to avoid
     // issues with MPEG-files!
     if   (first_frames>=7) return AVPROBE_SCORE_EXTENSION + 1;
@@ -302,14 +294,16 @@ static int mp3_parse_vbr_tags(AVFormatContext *s, AVStream *st, int64_t base)
     MPADecodeHeader c;
     int vbrtag_size = 0;
     MP3DecContext *mp3 = s->priv_data;
+    int ret;
 
     ffio_init_checksum(s->pb, ff_crcA001_update, 0);
 
     v = avio_rb32(s->pb);
-    if(ff_mpa_check_header(v) < 0)
-      return -1;
 
-    if (avpriv_mpegaudio_decode_header(&c, v) == 0)
+    ret = avpriv_mpegaudio_decode_header(&c, v);
+    if (ret < 0)
+        return ret;
+    else if (ret == 0)
         vbrtag_size = c.frame_size;
     if(c.layer != 3)
         return -1;