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Use NEON conditionally for sample conversions.

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This commit is contained in:
Themaister 2013-01-24 18:37:42 +01:00
parent 77207332f1
commit 7ab8eaec02
3 changed files with 24 additions and 7 deletions
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17
audio/utils.c
View File

@ -17,6 +17,7 @@
#include "utils.h"
#include "../general.h"
#include "../performance.h"
#if defined(__SSE2__)
#include <emmintrin.h>
@ -138,7 +139,7 @@ void audio_convert_float_to_s16_altivec(int16_t *out,
}
#elif defined(HAVE_NEON)
void audio_convert_s16_float_asm(float *out, const int16_t *in, size_t samples);
void audio_convert_s16_to_float_neon(float *out, const int16_t *in, size_t samples,
static void audio_convert_s16_to_float_neon(float *out, const int16_t *in, size_t samples,
float gain)
{
(void)gain; // gain is ignored for now.
@ -153,7 +154,7 @@ void audio_convert_s16_to_float_neon(float *out, const int16_t *in, size_t sampl
}
void audio_convert_float_s16_asm(int16_t *out, const float *in, size_t samples);
void audio_convert_float_to_s16_neon(int16_t *out, const float *in, size_t samples)
static void audio_convert_float_to_s16_neon(int16_t *out, const float *in, size_t samples)
{
size_t aligned_samples = samples & ~7;
if (aligned_samples)
@ -164,6 +165,18 @@ void audio_convert_float_to_s16_neon(int16_t *out, const float *in, size_t sampl
}
#endif
void audio_convert_init_simd(void)
{
#ifdef HAVE_NEON
struct rarch_cpu_features cpu;
rarch_get_cpu_features(&cpu);
audio_convert_s16_to_float_arm = cpu.simd & RARCH_SIMD_NEON ?
audio_convert_s16_to_float_neon : audio_convert_s16_to_float_C;
audio_convert_float_to_s16_arm = cpu.simd & RARCH_SIMD_NEON ?
audio_convert_float_to_s16_neon : audio_convert_float_to_s16_C;
#endif
}
#ifdef HAVE_RSOUND
bool rarch_rsound_start(const char *ip)

11
audio/utils.h
View File

@ -44,13 +44,12 @@ void audio_convert_float_to_s16_altivec(int16_t *out,
const float *in, size_t samples);
#elif defined(HAVE_NEON)
#define audio_convert_s16_to_float audio_convert_s16_to_float_neon
#define audio_convert_float_to_s16 audio_convert_float_to_s16_neon
#define audio_convert_s16_to_float audio_convert_s16_to_float_arm
#define audio_convert_float_to_s16 audio_convert_float_to_s16_arm
void audio_convert_s16_to_float_neon(float *out,
void (*audio_convert_s16_to_float_arm)(float *out,
const int16_t *in, size_t samples, float gain);
void audio_convert_float_to_s16_neon(int16_t *out,
void (*audio_convert_float_to_s16_arm)(int16_t *out,
const float *in, size_t samples);
#else
@ -63,6 +62,8 @@ void audio_convert_s16_to_float_C(float *out,
void audio_convert_float_to_s16_C(int16_t *out,
const float *in, size_t samples);
void audio_convert_init_simd(void);
#ifdef HAVE_RSOUND
bool rarch_rsound_start(const char *ip);
void rarch_rsound_stop(void);

3
driver.c
View File

@ -21,6 +21,7 @@
#include <string.h>
#include <math.h>
#include "compat/posix_string.h"
#include "audio/utils.h"
#ifdef HAVE_X11
#include "gfx/context/x11_common.h"
@ -359,6 +360,8 @@ static void deinit_dsp_plugin(void)
void init_audio(void)
{
audio_convert_init_simd();
// Resource leaks will follow if audio is initialized twice.
if (driver.audio_data)
return;