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(audio_utils.c) Cleanups

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This commit is contained in:
twinaphex 2015-07-10 19:51:09 +02:00
parent 33feed8aa7
commit 0189fa2c59
1 changed files with 6 additions and 5 deletions
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11
audio/audio_utils.c
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@ -87,9 +87,9 @@ void audio_convert_float_to_s16_C(int16_t *out,
void audio_convert_s16_to_float_SSE2(float *out,
const int16_t *in, size_t samples, float gain)
{
float fgain = gain / UINT32_C(0x80000000);
__m128 factor = _mm_set1_ps(fgain);
size_t i;
float fgain = gain / UINT32_C(0x80000000);
__m128 factor = _mm_set1_ps(fgain);
for (i = 0; i + 8 <= samples; i += 8, in += 8, out += 8)
{
@ -155,14 +155,15 @@ void audio_convert_s16_to_float_altivec(float *out,
const int16_t *in, size_t samples, float gain)
{
size_t samples_in = samples;
const vector float gain_vec = { gain, gain , gain, gain };
const vector float zero_vec = { 0.0f, 0.0f, 0.0f, 0.0f};
/* Unaligned loads/store is a bit expensive, so we
* optimize for the good path (very likely). */
if (((uintptr_t)out & 15) + ((uintptr_t)in & 15) == 0)
{
size_t i;
const vector float gain_vec = { gain, gain , gain, gain };
const vector float zero_vec = { 0.0f, 0.0f, 0.0f, 0.0f};
for (i = 0; i + 8 <= samples; i += 8, in += 8, out += 8)
{
vector signed short input = vec_ld(0, in);
@ -386,7 +387,7 @@ void audio_convert_float_to_s16_ALLEGREX(int16_t *out,
for (; i < samples; i++)
{
int32_t val = (int32_t)(in[i] * 0x8000);
out[i] = (val > 0x7FFF) ? 0x7FFF :
out[i] = (val > 0x7FFF) ? 0x7FFF :
(val < -0x8000 ? -0x8000 : (int16_t)val);
}
}