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dca: convert dca_default_coeffs to float.

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Easier to read, modify, and avoids relying on an outdated table.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Tim Walker
2013-11-22 20:19:55 +01:00
committed by Anton Khirnov
parent 25609b63d2
commit b6d5e6aa10
2 changed files with 13 additions and 13 deletions
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22
libavcodec/dcadata.h
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@@ -7522,17 +7522,17 @@ static const float dca_downmix_coeffs[65] = {
0.001412537544623, 0.001000000000000, 0.000501187233627, 0.000251188643151, 0.000000000000000,
};
static const uint8_t dca_default_coeffs[10][5][2] = {
{ { 13, 13 }, },
{ { 0, 64 }, { 64, 0 }, },
{ { 0, 64 }, { 64, 0 }, },
{ { 0, 64 }, { 64, 0 }, },
{ { 0, 64 }, { 64, 0 }, },
{ { 6, 6 }, { 0, 25 }, { 25, 0 }, },
{ { 0, 25 }, { 25, 0 }, { 13, 13 }, },
{ { 6, 6 }, { 0, 25 }, { 25, 0 }, { 13, 13 }, },
{ { 0, 25 }, { 25, 0 }, { 0, 13 }, { 13, 0 }, },
{ { 6, 6 }, { 0, 25 }, { 25, 0 }, { 0, 13 }, { 13, 0 }, },
static const float dca_default_coeffs[10][5][2] = {
{ { 0.707946, 0.707946 }, }, // A
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // A + B (dual mono)
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // L + R (stereo)
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // (L+R) + (L-R) (sum-difference)
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // LT + RT (left and right total)
{ { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, }, // C + L + R
{ { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 0.707946, 0.707946 }, }, // L + R + S
{ { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 0.707946, 0.707946 }, }, // C + L + R + S
{ { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 1.000000, 0.707946 }, { 0.707946, 1.000000 }, }, // L + R + SL + SR
{ { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 1.000000, 0.707946 }, { 0.707946, 1.000000 }, }, // C + L + R + SL + SR
};
/* downmix coeffs