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avcodec/wmaprodec: Fixes integer overflow with 32bit samples
Fixes: left shift of 1 by 31 places cannot be represented in type 'int' Fixes: 18860/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMAPRO_fuzzer-5755223125786624 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit a9cc69c0d59057ea172a107e0308fdf5fd8fc04e) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -471,7 +471,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
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for (i = 0; i < WMAPRO_BLOCK_SIZES; i++)
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ff_mdct_init(&s->mdct_ctx[i], WMAPRO_BLOCK_MIN_BITS+1+i, 1,
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1.0 / (1 << (WMAPRO_BLOCK_MIN_BITS + i - 1))
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/ (1 << (s->bits_per_sample - 1)));
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/ (1ll << (s->bits_per_sample - 1)));
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/** init MDCT windows: simple sine window */
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for (i = 0; i < WMAPRO_BLOCK_SIZES; i++) {
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