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avcodec/aacsbr_fixed: Fix multiple runtime error: shift exponent 170 is too large for 32-bit type 'int'
Fixes part of 1709/clusterfuzz-testcase-minimized-4513580554649600 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 6310fc714de3cd73848416ead73228fcef8b6dc0) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -575,20 +575,25 @@ static void sbr_hf_assemble(int Y1[38][64][2],
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SoftFloat *in = sbr->s_m[e];
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for (m = 0; m+1 < m_max; m+=2) {
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shift = 22 - in[m ].exp;
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round = 1 << (shift-1);
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out[2*m ] += (in[m ].mant * A + round) >> shift;
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shift = 22 - in[m ].exp;
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if (shift < 32) {
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round = 1 << (shift-1);
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out[2*m ] += (in[m ].mant * A + round) >> shift;
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}
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shift = 22 - in[m+1].exp;
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round = 1 << (shift-1);
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out[2*m+2] += (in[m+1].mant * B + round) >> shift;
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shift = 22 - in[m+1].exp;
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if (shift < 32) {
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round = 1 << (shift-1);
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out[2*m+2] += (in[m+1].mant * B + round) >> shift;
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}
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}
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if(m_max&1)
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{
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shift = 22 - in[m ].exp;
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round = 1 << (shift-1);
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out[2*m ] += (in[m ].mant * A + round) >> shift;
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shift = 22 - in[m ].exp;
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if (shift < 32) {
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round = 1 << (shift-1);
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out[2*m ] += (in[m ].mant * A + round) >> shift;
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}
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}
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}
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indexnoise = (indexnoise + m_max) & 0x1ff;
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