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avcodec/imc: Check flcoeffs5
Fixes infinite loop Fixes Ticket2996 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -451,8 +451,13 @@ static int bit_allocation(IMCContext *q, IMCChannel *chctx,
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for (i = 0; i < BANDS; i++)
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highest = FFMAX(highest, chctx->flcoeffs1[i]);
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for (i = 0; i < BANDS - 1; i++)
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for (i = 0; i < BANDS - 1; i++) {
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if (chctx->flcoeffs5[i] <= 0) {
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av_log(NULL, AV_LOG_ERROR, "flcoeffs5 %f invalid\n", chctx->flcoeffs5[i]);
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return AVERROR_INVALIDDATA;
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}
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chctx->flcoeffs4[i] = chctx->flcoeffs3[i] - log2f(chctx->flcoeffs5[i]);
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}
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chctx->flcoeffs4[BANDS - 1] = limit;
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highest = highest * 0.25;
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