hevc: eliminate the last element from TransformTree

[ffmpeg] / libavcodec / cavsdec.c

diff --git a/libavcodec/cavsdec.c b/libavcodec/cavsdec.c
index 37eb1186666bbe658666c4b10e5fd4a74a4b62dd..fbbd04803a70bbc34d8642fed646f4fc23107b5d 100644 (file)
--- a/libavcodec/cavsdec.c
+++ b/libavcodec/cavsdec.c
@@ -581,7 +581,7 @@ static int decode_residual_block(AVSContext *h, GetBitContext *gb,
                       dequant_shift[qp], i)) < 0)
         return ret;
     h->cdsp.cavs_idct8_add(dst, block, stride);
-    h->dsp.clear_block(block);
+    h->bdsp.clear_block(block);
     return 0;
 }
 
@@ -602,8 +602,8 @@ static inline int decode_residual_inter(AVSContext *h)
 
     /* get coded block pattern */
     int cbp = get_ue_golomb(&h->gb);
-    if (cbp > 63) {
-        av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp\n");
+    if (cbp > 63 || cbp < 0) {
+        av_log(h->avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp);
         return AVERROR_INVALIDDATA;
     }
     h->cbp = cbp_tab[cbp][1];
@@ -673,7 +673,7 @@ static int decode_mb_i(AVSContext *h, int cbp_code)
     /* get coded block pattern */
     if (h->cur.f->pict_type == AV_PICTURE_TYPE_I)
         cbp_code = get_ue_golomb(gb);
-    if (cbp_code > 63) {
+    if (cbp_code > 63 || cbp_code < 0) {
         av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\n");
         return AVERROR_INVALIDDATA;
     }
@@ -928,6 +928,7 @@ static inline int check_for_slice(AVSContext *h)
 
 static int decode_pic(AVSContext *h)
 {
+    int ret;
     int skip_count    = -1;
     enum cavs_mb mb_type;
 
@@ -964,8 +965,10 @@ static int decode_pic(AVSContext *h)
             skip_bits(&h->gb, 1); //marker_bit
     }
 
-    ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ?
-                  0 : AV_GET_BUFFER_FLAG_REF);
+    ret = ff_get_buffer(h->avctx, h->cur.f, h->cur.f->pict_type == AV_PICTURE_TYPE_B ?
+                        0 : AV_GET_BUFFER_FLAG_REF);
+    if (ret < 0)
+        return ret;
 
     if (!h->edge_emu_buffer) {
         int alloc_size = FFALIGN(FFABS(h->cur.f->linesize[0]) + 32, 32);