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g723.1: fix addition overflow
This addition must be done as 64-bit to avoid overflow and for the subsequent clipping to be meaningful. Signed-off-by: Mans Rullgard <mans@mansr.com>
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@ -979,7 +979,7 @@ static void formant_postfilter(G723_1_Context *p, int16_t *lpc, int16_t *buf)
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/* Compensation filter */
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for (j = 0; j < SUBFRAME_LEN; j++) {
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buf_ptr[j] = av_clipl_int32(signal_ptr[j] +
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buf_ptr[j] = av_clipl_int32((int64_t)signal_ptr[j] +
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((signal_ptr[j - 1] >> 16) *
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temp << 1)) >> 16;
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}
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@ -13,7 +13,7 @@
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0, 2640, 2640, 240, 480, 0xe253c7e1
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0, 2880, 2880, 240, 480, 0x672cbf0a
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0, 3120, 3120, 240, 480, 0x5f32aa27
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0, 3360, 3360, 240, 480, 0x8646a245
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0, 3360, 3360, 240, 480, 0x0b3da147
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0, 3600, 3600, 240, 480, 0x4819e5bc
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0, 3840, 3840, 240, 480, 0x423dec60
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0, 4080, 4080, 240, 480, 0xafefe289
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