mirror of https://git.ffmpeg.org/ffmpeg.git
ac3enc: simplify exponent_init() by calculating exponent_group_tab[] based
on exponent group sizes.
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@ -521,11 +521,13 @@ static void apply_rematrixing(AC3EncodeContext *s)
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*/
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static av_cold void exponent_init(AC3EncodeContext *s)
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{
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int i;
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int expstr, i, grpsize;
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for (expstr = EXP_D15-1; expstr <= EXP_D45-1; expstr++) {
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grpsize = 3 << expstr;
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for (i = 73; i < 256; i++) {
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exponent_group_tab[0][i] = (i - 1) / 3;
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exponent_group_tab[1][i] = (i + 2) / 6;
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exponent_group_tab[2][i] = (i + 8) / 12;
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exponent_group_tab[expstr][i] = (i + grpsize - 4) / grpsize;
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}
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}
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/* LFE */
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exponent_group_tab[0][7] = 2;
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