mirror of https://git.wownero.com/dsc/mxe.git
32 lines
1.2 KiB
Diff
32 lines
1.2 KiB
Diff
This file is part of MXE.
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See index.html for further information.
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Taken from libdca svn: svn://svn.videolan.org/libdca/trunk.
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r89 | sam | 2008-07-19 22:26:17 +0000 (Sat, 19 Jul 2008) | 2 lines
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* parse.c: avoid crashing with invalid frames setting a bitalloc_huffman
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component to 7.
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--- libdca.orig/libdca/parse.c
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+++ libdca/libdca/parse.c
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@@ -364,7 +364,10 @@
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for (i = 0; i < state->prim_channels; i++)
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{
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state->bitalloc_huffman[i] = bitstream_get (state, 3);
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- /* if (state->bitalloc_huffman[i] == 7) bailout */
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+ /* There might be a way not to trash the whole frame, but for
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+ * now we must bail out or we will buffer overflow later. */
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+ if (state->bitalloc_huffman[i] == 7)
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+ return 1;
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#ifdef DEBUG
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fprintf (stderr, "bit allocation quantizer: %i\n",
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state->bitalloc_huffman[i]);
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@@ -541,6 +544,7 @@
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k < state->vq_start_subband[j] &&
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state->bitalloc[j][k] > 0)
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{
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+ /* tmode cannot overflow since transient_huffman[j] < 4 */
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state->transition_mode[j][k] = InverseQ (state,
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tmode[state->transient_huffman[j]]);
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}
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