diff options
Diffstat (limited to 'Alc/mixer_sse.c')
| -rw-r--r-- | Alc/mixer_sse.c | 85 |
1 files changed, 22 insertions, 63 deletions
diff --git a/Alc/mixer_sse.c b/Alc/mixer_sse.c index d06455dd..22a7db40 100644 --- a/Alc/mixer_sse.c +++ b/Alc/mixer_sse.c @@ -60,84 +60,43 @@ void Resample_lerp32_SSE(const ALfloat *data, ALuint frac, } void Resample_cubic32_SSE(const ALfloat *data, ALuint frac, - ALuint increment, ALuint NumChannels, ALfloat *RESTRICT OutBuffer, + ALuint increment, ALuint channels, ALfloat *RESTRICT OutBuffer, ALuint BufferSize) { /* Cubic interpolation mainly consists of a matrix4 * vector4 operation, * followed by scalars being applied to the resulting elements before all * four are added together for the final sample. */ static const __m128 matrix[4] = { - { -0.5, 1.0f, -0.5f, 0.0f }, - { 1.5, -2.5f, 0.0f, 1.0f }, - { -1.5, 2.0f, 0.5f, 0.0f }, - { 0.5, -0.5f, 0.0f, 0.0f }, + { -0.5f, 1.0f, -0.5f, 0.0f }, + { 1.5f, -2.5f, 0.0f, 1.0f }, + { -1.5f, 2.0f, 0.5f, 0.0f }, + { 0.5f, -0.5f, 0.0f, 0.0f }, }; ALIGN(16) float value[4]; ALuint pos = 0; - ALuint i, j; - - for(i = 0;i < BufferSize+1-3;i+=4) - { - __m128 result, final[4]; - - for(j = 0;j < 4;j++) - { - __m128 val4, s; - ALfloat mu; - - val4 = _mm_set_ps(data[(pos-1)*NumChannels], - data[(pos )*NumChannels], - data[(pos+1)*NumChannels], - data[(pos+2)*NumChannels]); - mu = frac * (1.0f/FRACTIONONE); - s = _mm_set_ps(1.0f, mu, mu*mu, mu*mu*mu); - - /* result = matrix * val4 */ - result = _mm_mul_ps(val4, matrix[0]) ; - result = _mm_add_ps(result, _mm_mul_ps(val4, matrix[1])); - result = _mm_add_ps(result, _mm_mul_ps(val4, matrix[2])); - result = _mm_add_ps(result, _mm_mul_ps(val4, matrix[3])); - - /* final[j] = result * { mu^0, mu^1, mu^2, mu^3 } */ - final[j] = _mm_mul_ps(result, s); + ALuint i; - frac += increment; - pos += frac>>FRACTIONBITS; - frac &= FRACTIONMASK; - } - /* Transpose the final "matrix" so adding the rows will give the four - * samples. TODO: Is this faster than doing.. - * _mm_store_ps(value, result); - * OutBuffer[i] = value[0] + value[1] + value[2] + value[3]; - * ..for each sample? - */ - _MM_TRANSPOSE4_PS(final[0], final[1], final[2], final[3]); - result = _mm_add_ps(_mm_add_ps(final[0], final[1]), - _mm_add_ps(final[2], final[3])); - - _mm_store_ps(&OutBuffer[i], result); - } - for(;i < BufferSize+1;i++) + for(i = 0;i < BufferSize+1;i++) { - __m128 val4, s, result; + __m128 res1, res2; ALfloat mu; - val4 = _mm_set_ps(data[(pos-1)*NumChannels], - data[(pos )*NumChannels], - data[(pos+1)*NumChannels], - data[(pos+2)*NumChannels]); - mu = frac * (1.0f/FRACTIONONE); - s = _mm_set_ps(1.0f, mu, mu*mu, mu*mu*mu); + /* matrix * { samples } */ + res1 = _mm_add_ps(_mm_mul_ps(_mm_set1_ps(data[(pos-1)*channels]), matrix[0]), + _mm_mul_ps(_mm_set1_ps(data[(pos )*channels]), matrix[1])); + res2 = _mm_add_ps(_mm_mul_ps(_mm_set1_ps(data[(pos+1)*channels]), matrix[2]), + _mm_mul_ps(_mm_set1_ps(data[(pos+2)*channels]), matrix[3])); + res1 = _mm_add_ps(res1, res2); - /* result = matrix * val4 */ - result = _mm_mul_ps(val4, matrix[0]) ; - result = _mm_add_ps(result, _mm_mul_ps(val4, matrix[1])); - result = _mm_add_ps(result, _mm_mul_ps(val4, matrix[2])); - result = _mm_add_ps(result, _mm_mul_ps(val4, matrix[3])); - - /* value = result * { mu^0, mu^1, mu^2, mu^3 } */ - _mm_store_ps(value, _mm_mul_ps(result, s)); + /* res1 * { mu^3, mu^2, mu^1, mu^0 } */ + mu = frac * (1.0f/FRACTIONONE); + value[0] = mu*mu*mu; + value[1] = mu*mu; + value[2] = mu; + value[3] = 1.0f; + res1 = _mm_mul_ps(res1, _mm_load_ps(value)); + _mm_store_ps(value, res1); OutBuffer[i] = value[0] + value[1] + value[2] + value[3]; frac += increment; |