diff options
Diffstat (limited to 'volscale.c')
-rw-r--r-- | volscale.c | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/volscale.c b/volscale.c deleted file mode 100644 index 2075b90..0000000 --- a/volscale.c +++ /dev/null @@ -1,67 +0,0 @@ -#include <liboil/liboil.h> - -#include "macro.h" -#include "volscale.h" - -static void volscale_u8(void *_dst, size_t dstr, const void *_src, size_t sstr, int32_t factor, int32_t divisor, size_t bytes) { - uint8_t *dst = _dst; - const uint8_t *src = _src; - - for (; bytes > 0; bytes --) { - int32_t t = (((int32_t) *src - 0x80) * factor) / divisor; - *dst = t < -0x80 ? 0 : (t > 0x7F ? 0xFF : (int8_t) (t+0x80)); - - src += sstr; - dst += dstr; - } -} - -static void volscale_s16(void *_dst, size_t dstr, const void *_src, size_t sstr, int32_t factor, int32_t divisor, size_t bytes) { - int16_t *dst = _dst; - const int16_t *src = _src; - unsigned n = bytes / sizeof(int16_t); - - for (; n > 0; n--) { - int32_t t = ((int32_t) *src * factor) / divisor; - *dst = t < -0x8000 ? 0x8000 : (t > 0x7FFF ? 0x7FFF : (int16_t) t); - - src += sstr / sizeof(int16_t); - dst += dstr / sizeof(int16_t); - } -} - -static void volscale_s32(void *_dst, size_t dstr, const void *_src, size_t sstr, int32_t factor, int32_t divisor, size_t bytes) { - int32_t *dst = _dst; - const int32_t *src = _src; - unsigned n = bytes / sizeof(int32_t); - - for (; n > 0; n--) { - int64_t t = ((int64_t) *src * factor) / divisor; - *dst = t < -0x80000000L ? (int32_t) 0x80000000L : (t > 0x7fffffffL ? (int32_t) 0x7fffffffL : (int32_t) t); - - src += sstr / sizeof(int32_t); - dst += dstr / sizeof(int32_t); - } -} - -static void volscale_f32(void *_dst, size_t dstr, const void *_src, size_t sstr, int32_t factor, int32_t divisor, size_t size) { - float *dst = _dst; - const float *src = _src; - float f = (float) factor / (float) divisor; - - oil_scalarmult_f32(dst, dstr, src, sstr, &f, size / sizeof(float)); -} - -sa_volscale_func_t sa_get_volscale_func(sa_pcm_format_t f) { - - static const sa_volscale_func_t funcs[_SA_PCM_FORMAT_MAX] = { - [SA_PCM_FORMAT_U8] = volscale_u8, - [SA_PCM_FORMAT_S16_NE] = volscale_s16, - [SA_PCM_FORMAT_S32_NE] = volscale_s32, - [SA_PCM_FORMAT_FLOAT32_NE] = volscale_f32 - }; - - sa_assert(f < _SA_PCM_FORMAT_MAX); - - return funcs[f]; -} |