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Diffstat (limited to 'libavcodec/wmaprodec.c')
-rw-r--r--libavcodec/wmaprodec.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 2f2cbd6de5..444e8a543e 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -105,7 +105,7 @@
#define MAX_FRAMESIZE 32768 ///< maximum compressed frame size
#define WMAPRO_BLOCK_MIN_BITS 6 ///< log2 of min block size
-#define WMAPRO_BLOCK_MAX_BITS 12 ///< log2 of max block size
+#define WMAPRO_BLOCK_MAX_BITS 13 ///< log2 of max block size
#define WMAPRO_BLOCK_MAX_SIZE (1 << WMAPRO_BLOCK_MAX_BITS) ///< maximum block size
#define WMAPRO_BLOCK_SIZES (WMAPRO_BLOCK_MAX_BITS - WMAPRO_BLOCK_MIN_BITS + 1) ///< possible block sizes
@@ -276,7 +276,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
WMAProDecodeCtx *s = avctx->priv_data;
uint8_t *edata_ptr = avctx->extradata;
unsigned int channel_mask;
- int i;
+ int i, bits;
int log2_max_num_subframes;
int num_possible_block_sizes;
@@ -310,8 +310,12 @@ static av_cold int decode_init(AVCodecContext *avctx)
s->len_prefix = (s->decode_flags & 0x40);
/** get frame len */
- s->samples_per_frame = 1 << ff_wma_get_frame_len_bits(avctx->sample_rate,
- 3, s->decode_flags);
+ bits = ff_wma_get_frame_len_bits(avctx->sample_rate, 3, s->decode_flags);
+ if (bits > WMAPRO_BLOCK_MAX_BITS) {
+ av_log_missing_feature(avctx, "14-bits block sizes", 1);
+ return AVERROR_INVALIDDATA;
+ }
+ s->samples_per_frame = 1 << bits;
/** subframe info */
log2_max_num_subframes = ((s->decode_flags & 0x38) >> 3);