X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpeg4audio.c;h=0d83fb8d259783abf482f9e3ad8451a002a8ad0f;hb=30b28f9a83ec095f5684fecb04a42619a6675989;hp=219714752f9526454df6dfc961db998608013e83;hpb=4069096dd535ee99175c2a29c1a1f59c3fc110c1;p=ffmpeg

diff --git a/libavcodec/mpeg4audio.c b/libavcodec/mpeg4audio.c
index 219714752f9..0d83fb8d259 100644
--- a/libavcodec/mpeg4audio.c
+++ b/libavcodec/mpeg4audio.c
@@ -84,7 +84,7 @@ static inline int get_sample_rate(GetBitContext *gb, int *index)
 }
 
 int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
-                                int sync_extension)
+                                int sync_extension, void *logctx)
 {
     int specific_config_bitindex, ret;
     int start_bit_index = get_bits_count(gb);
@@ -93,6 +93,10 @@ int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
     c->chan_config = get_bits(gb, 4);
     if (c->chan_config < FF_ARRAY_ELEMS(ff_mpeg4audio_channels))
         c->channels = ff_mpeg4audio_channels[c->chan_config];
+    else {
+        av_log(logctx, AV_LOG_ERROR, "Invalid chan_config %d\n", c->chan_config);
+        return AVERROR_INVALIDDATA;
+    }
     c->sbr = -1;
     c->ps  = -1;
     if (c->object_type == AOT_SBR || (c->object_type == AOT_PS &&
@@ -114,8 +118,8 @@ int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
 
     if (c->object_type == AOT_ALS) {
         skip_bits(gb, 5);
-        if (show_bits_long(gb, 24) != MKBETAG('\0','A','L','S'))
-            skip_bits_long(gb, 24);
+        if (show_bits(gb, 24) != MKBETAG('\0','A','L','S'))
+            skip_bits(gb, 24);
 
         specific_config_bitindex = get_bits_count(gb);
 
@@ -152,6 +156,7 @@ int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
     return specific_config_bitindex - start_bit_index;
 }
 
+#if LIBAVCODEC_VERSION_MAJOR < 59
 int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf,
                                  int bit_size, int sync_extension)
 {
@@ -165,5 +170,22 @@ int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf,
     if (ret < 0)
         return ret;
 
-    return ff_mpeg4audio_get_config_gb(c, &gb, sync_extension);
+    return ff_mpeg4audio_get_config_gb(c, &gb, sync_extension, NULL);
+}
+#endif
+
+int avpriv_mpeg4audio_get_config2(MPEG4AudioConfig *c, const uint8_t *buf,
+                                  int size, int sync_extension, void *logctx)
+{
+    GetBitContext gb;
+    int ret;
+
+    if (size <= 0)
+        return AVERROR_INVALIDDATA;
+
+    ret = init_get_bits8(&gb, buf, size);
+    if (ret < 0)
+        return ret;
+
+    return ff_mpeg4audio_get_config_gb(c, &gb, sync_extension, logctx);
 }