From 7e0f547f2fd8ddfae1d807334dbc3428a3dfe374 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 9 Nov 2007 02:45:07 +0000 Subject: add support for 32bit integer samples git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2037 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/pulsecore/sconv-s16le.c | 131 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 129 insertions(+), 2 deletions(-) (limited to 'src/pulsecore/sconv-s16le.c') diff --git a/src/pulsecore/sconv-s16le.c b/src/pulsecore/sconv-s16le.c index 6925052c..90e9b6d2 100644 --- a/src/pulsecore/sconv-s16le.c +++ b/src/pulsecore/sconv-s16le.c @@ -25,7 +25,10 @@ #include #endif +/* Despite the name of this file we implement S32 handling here, too. */ + #include +#include #include @@ -45,6 +48,14 @@ #define INT16_TO PA_INT16_TO_LE #endif +#ifndef INT32_FROM +#define INT32_FROM PA_INT32_FROM_LE +#endif + +#ifndef INT32_TO +#define INT32_TO PA_INT32_TO_LE +#endif + #ifndef SWAP_WORDS #ifdef WORDS_BIGENDIAN #define SWAP_WORDS 1 @@ -72,6 +83,25 @@ void pa_sconv_s16le_to_float32ne(unsigned n, const int16_t *a, float *b) { #endif } +void pa_sconv_s32le_to_float32ne(unsigned n, const int32_t *a, float *b) { + pa_assert(a); + pa_assert(b); + +#if SWAP_WORDS == 1 + + for (; n > 0; n--) { + int32_t s = *(a++); + *(b++) = (float) (((double) INT32_FROM(s))/0x7FFFFFFF); + } + +#else +{ + static const double add = 0, factor = 1.0/0x7FFFFFFF; + oil_scaleconv_f32_s32(b, a, n, &add, &factor); +} +#endif +} + void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) { pa_assert(a); pa_assert(b); @@ -82,7 +112,7 @@ void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) { int16_t s; float v = *(a++); - v = CLAMP(v, -1, 1); + v = PA_CLAMP_UNLIKELY(v, -1, 1); s = (int16_t) (v * 0x7FFF); *(b++) = INT16_TO(s); } @@ -95,6 +125,29 @@ void pa_sconv_s16le_from_float32ne(unsigned n, const float *a, int16_t *b) { #endif } +void pa_sconv_s32le_from_float32ne(unsigned n, const float *a, int32_t *b) { + pa_assert(a); + pa_assert(b); + +#if SWAP_WORDS == 1 + + for (; n > 0; n--) { + int32_t s; + float v = *(a++); + + v = PA_CLAMP_UNLIKELY(v, -1, 1); + s = (int32_t) ((double) v * (double) 0x7FFFFFFF); + *(b++) = INT32_TO(s); + } + +#else +{ + static const double add = 0, factor = 0x7FFFFFFF; + oil_scaleconv_s32_f32(b, a, n, &add, &factor); +} +#endif +} + void pa_sconv_s16le_to_float32re(unsigned n, const int16_t *a, float *b) { pa_assert(a); pa_assert(b); @@ -108,6 +161,19 @@ void pa_sconv_s16le_to_float32re(unsigned n, const int16_t *a, float *b) { } } +void pa_sconv_s32le_to_float32re(unsigned n, const int32_t *a, float *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--) { + int32_t s = *(a++); + float k = (float) (((double) INT32_FROM(s))/0x7FFFFFFF); + uint32_t *j = (uint32_t*) &k; + *j = PA_UINT32_SWAP(*j); + *(b++) = k; + } +} + void pa_sconv_s16le_from_float32re(unsigned n, const float *a, int16_t *b) { pa_assert(a); pa_assert(b); @@ -117,8 +183,69 @@ void pa_sconv_s16le_from_float32re(unsigned n, const float *a, int16_t *b) { float v = *(a++); uint32_t *j = (uint32_t*) &v; *j = PA_UINT32_SWAP(*j); - v = CLAMP(v, -1, 1); + v = PA_CLAMP_UNLIKELY(v, -1, 1); s = (int16_t) (v * 0x7FFF); *(b++) = INT16_TO(s); } } + +void pa_sconv_s32le_from_float32re(unsigned n, const float *a, int32_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--) { + int32_t s; + float v = *(a++); + uint32_t *j = (uint32_t*) &v; + *j = PA_UINT32_SWAP(*j); + v = PA_CLAMP_UNLIKELY(v, -1, 1); + s = (int32_t) ((double) v * 0x7FFFFFFF); + *(b++) = INT32_TO(s); + } +} + +void pa_sconv_s32le_to_s16ne(unsigned n, const int32_t*a, int16_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--) { + *b = (int16_t) (INT32_FROM(*a) >> 16); + a++; + b++; + } +} + +void pa_sconv_s32le_to_s16re(unsigned n, const int32_t*a, int16_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--) { + int16_t s = (int16_t) (INT32_FROM(*a) >> 16); + *b = PA_UINT32_SWAP(s); + a++; + b++; + } +} + +void pa_sconv_s32le_from_s16ne(unsigned n, const int16_t *a, int32_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--) { + *b = INT32_TO(((int32_t) *a) << 16); + a++; + b++; + } +} + +void pa_sconv_s32le_from_s16re(unsigned n, const int16_t *a, int32_t *b) { + pa_assert(a); + pa_assert(b); + + for (; n > 0; n--) { + int32_t s = ((int32_t) PA_UINT16_SWAP(*a)) << 16; + *b = INT32_TO(s); + a++; + b++; + } +} -- cgit