avcodec/smacker: do not use NULL for av_log()

libavcodec/smacker.c

@@ -107,16 +107,16 @@ enum SmkBlockTypes {
  * Can read SMKTREE_DECODE_MAX_RECURSION before the first check;
  * does not overread gb on success.
  */
-static int smacker_decode_tree(GetBitContext *gb, HuffContext *hc, int length)
+static int smacker_decode_tree(AVCodecContext *avctx, GetBitContext *gb, HuffContext *hc, int length)
 {
     if (length > SMKTREE_DECODE_MAX_RECURSION || length > 3 * SMKTREE_BITS) {
-        av_log(NULL, AV_LOG_ERROR, "Maximum tree recursion level exceeded.\n");
+        av_log(avctx, AV_LOG_ERROR, "Maximum tree recursion level exceeded.\n");
         return AVERROR_INVALIDDATA;
     }
 
     if(!get_bits1(gb)){ //Leaf
         if (hc->current >= 256) {
-            av_log(NULL, AV_LOG_ERROR, "Tree size exceeded!\n");
+            av_log(avctx, AV_LOG_ERROR, "Tree size exceeded!\n");
             return AVERROR_INVALIDDATA;
         }
         if (get_bits_left(gb) < 8)
@@ -126,10 +126,10 @@ static int smacker_decode_tree(GetBitContext *gb, HuffContext *hc, int length)
     } else { //Node
         int r;
         length++;
-        r = smacker_decode_tree(gb, hc, length);
+        r = smacker_decode_tree(avctx, gb, hc, length);
         if(r)
             return r;
-        return smacker_decode_tree(gb, hc, length);
+        return smacker_decode_tree(avctx, gb, hc, length);
     }
 }
 
@@ -138,7 +138,7 @@ static int smacker_decode_tree(GetBitContext *gb, HuffContext *hc, int length)
  *
  * Checks before the first read, can overread by 6 * SMKTREE_BITS on success.
  */
-static int smacker_decode_bigtree(GetBitContext *gb, DBCtx *ctx, int length)
+static int smacker_decode_bigtree(AVCodecContext *avctx, GetBitContext *gb, DBCtx *ctx, int length)
 {
     // Larger length can cause segmentation faults due to too deep recursion.
     if (length > SMKTREE_DECODE_BIG_MAX_RECURSION) {
@@ -176,12 +176,12 @@ static int smacker_decode_bigtree(GetBitContext *gb, DBCtx *ctx, int length)
         int r = 0, r_new, t;
 
         t = ctx->current++;
-        r = smacker_decode_bigtree(gb, ctx, length + 1);
+        r = smacker_decode_bigtree(avctx, gb, ctx, length + 1);
         if(r < 0)
             return r;
         ctx->values[t] = SMK_NODE | r;
         r++;
-        r_new = smacker_decode_bigtree(gb, ctx, length + 1);
+        r_new = smacker_decode_bigtree(avctx, gb, ctx, length + 1);
         if (r_new < 0)
             return r_new;
         return r + r_new;
@@ -215,7 +215,7 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
                    i ? "high" : "low");
             continue;
         }
-        err = smacker_decode_tree(gb, &h, 0);
+        err = smacker_decode_tree(smk->avctx, gb, &h, 0);
         if (err < 0)
             goto error;
         skip_bits1(gb);
@@ -253,7 +253,7 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
     }
     *recodes = ctx.values;
 
-    err = smacker_decode_bigtree(gb, &ctx, 0);
+    err = smacker_decode_bigtree(smk->avctx, gb, &ctx, 0);
     if (err < 0)
         goto error;
     skip_bits1(gb);
@@ -649,7 +649,7 @@ static int smka_decode_frame(AVCodecContext *avctx, AVFrame *frame,
         HuffContext h;
         h.current = 0;
         skip_bits1(&gb);
-        if ((ret = smacker_decode_tree(&gb, &h, 0)) < 0)
+        if ((ret = smacker_decode_tree(avctx, &gb, &h, 0)) < 0)
             goto error;
         skip_bits1(&gb);
         if (h.current > 1) {