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(PSP) add allegrex VFPU optimized s16 <-> float conversions.

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This commit is contained in:
aliaspider 2014-03-14 15:12:47 +01:00
parent 1d517d1846
commit dc3405bbb4
2 changed files with 105 additions and 0 deletions
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98
audio/utils.c
View File

@ -163,6 +163,104 @@ static void audio_convert_float_to_s16_neon(int16_t *out, const float *in, size_
audio_convert_float_to_s16_C(out + aligned_samples, in + aligned_samples,
samples - aligned_samples);
}
#elif defined(_MIPS_ARCH_ALLEGREX)
void audio_convert_s16_to_float_ALLEGREX(float *out,
const int16_t *in, size_t samples, float gain)
{
#ifdef DEBUG
// make sure the buffer is 16 byte aligned, this should be the default behaviour of malloc in the PSPSDK
rarch_assert(((uint32_t)out & 0xF) == 0);
#endif
size_t i;
gain = gain / 0x8000;
__asm__ (
".set push \n"
".set noreorder \n"
"mtv %0, s200 \n"
".set pop \n"
::"r"(gain)
);
for (i = 0; (i+16) <= samples; i+=16)
{
__asm__ (
".set push \n"
".set noreorder \n"
"lv.s s100, 0(%0) \n"
"lv.s s101, 4(%0) \n"
"lv.s s110, 8(%0) \n"
"lv.s s111, 12(%0) \n"
"lv.s s120, 16(%0) \n"
"lv.s s121, 20(%0) \n"
"lv.s s130, 24(%0) \n"
"lv.s s131, 28(%0) \n"
"vs2i.p c100, c100 \n"
"vs2i.p c110, c110 \n"
"vs2i.p c120, c120 \n"
"vs2i.p c130, c130 \n"
"vi2f.q c100, c100, 16 \n"
"vi2f.q c110, c110, 16 \n"
"vi2f.q c120, c120, 16 \n"
"vi2f.q c130, c130, 16 \n"
"vmscl.q e100, e100, s200 \n"
"sv.q c100, 0(%1) \n"
"sv.q c110, 16(%1) \n"
"sv.q c120, 32(%1) \n"
"sv.q c130, 48(%1) \n"
".set pop \n"
::"r"(in+i),"r"(out+i)
);
}
for (;i != samples; i++)
out[i] = (float)in[i] * gain;
}
void audio_convert_float_to_s16_ALLEGREX(int16_t *out,
const float *in, size_t samples)
{
#ifdef DEBUG
// make sure the buffers are 16 byte aligned, this should be the default behaviour of malloc in the PSPSDK
rarch_assert(((uint32_t)in & 0xF) == 0);
rarch_assert(((uint32_t)out & 0xF) == 0);
#endif
size_t i;
for (i = 0; (i+8) <= samples; i+=8)
{
__asm__ (
".set push \n"
".set noreorder \n"
"lv.q c100, 0(%0) \n"
"lv.q c110, 16(%0) \n"
"vf2in.q c100, c100, 31 \n"
"vf2in.q c110, c110, 31 \n"
"vi2s.q c100, c100 \n"
"vi2s.q c102, c110 \n"
"sv.q c100, 0(%1) \n"
".set pop \n"
::"r"(in+i),"r"(out+i)
);
}
for (;i != samples; i++)
{
int32_t val = (int32_t)(in[i] * 0x8000);
out[i] = (val > 0x7FFF) ? 0x7FFF : (val < -0x8000 ? -0x8000 : (int16_t)val);
}
}
#endif
void audio_convert_init_simd(void)

7
audio/utils.h
View File

@ -51,7 +51,14 @@ void (*audio_convert_s16_to_float_arm)(float *out,
const int16_t *in, size_t samples, float gain);
void (*audio_convert_float_to_s16_arm)(int16_t *out,
const float *in, size_t samples);
#elif defined(_MIPS_ARCH_ALLEGREX)
#define audio_convert_s16_to_float audio_convert_s16_to_float_ALLEGREX
#define audio_convert_float_to_s16 audio_convert_float_to_s16_ALLEGREX
void audio_convert_s16_to_float_ALLEGREX(float *out,
const int16_t *in, size_t samples, float gain);
void audio_convert_float_to_s16_ALLEGREX(int16_t *out,
const float *in, size_t samples);
#else
#define audio_convert_s16_to_float audio_convert_s16_to_float_C
#define audio_convert_float_to_s16 audio_convert_float_to_s16_C