X-Git-Url: http://git.ieval.ro/?a=blobdiff_plain;f=src%2Flpcm.c;h=3fcb8a43ab87838983fbe732b8a4c382d66b3168;hb=2642af896e0a9f7b3bca63b02833e69b3bfcd82a;hp=d8c279e8d9e25f7afdfebc581441bd5ceffdd28f;hpb=6da14aaeb755e6205631a8734542c82b5a7ba470;p=fdkaac.git diff --git a/src/lpcm.c b/src/lpcm.c index d8c279e..3fcb8a4 100644 --- a/src/lpcm.c +++ b/src/lpcm.c @@ -34,6 +34,7 @@ inline int lrint(double x) # endif #endif +static inline double pcm_clip(double n, double min_value, double max_value) { if (n < min_value) @@ -42,6 +43,7 @@ inline double pcm_clip(double n, double min_value, double max_value) return max_value; return n; } +static inline float pcm_i2f(int32_t n) { union { @@ -51,6 +53,7 @@ inline float pcm_i2f(int32_t n) u.ivalue = n; return u.fvalue; } +static inline double pcm_i2d(int64_t n) { union { @@ -60,99 +63,123 @@ inline double pcm_i2d(int64_t n) u.ivalue = n; return u.fvalue; } +static inline int16_t pcm_quantize_s32(int32_t n) { n = ((n >> 15) + 1) >> 1; return (n == 0x8000) ? 0x7fff : n; } +static inline int16_t pcm_quantize_f64(double v) { return (int16_t)lrint(pcm_clip(v * 32768.0, -32768.0, 32767.0)); } +static inline int16_t pcm_s8_to_s16(int8_t n) { return n << 8; } +static inline int16_t pcm_u8_to_s16(uint8_t n) { return (n << 8) ^ 0x8000; } +static inline int16_t pcm_s16le_to_s16(int16_t n) { return m4af_ltoh16(n); } +static inline int16_t pcm_s16be_to_s16(int16_t n) { return m4af_btoh16(n); } +static inline int16_t pcm_u16le_to_s16(uint16_t n) { return m4af_ltoh16(n) ^ 0x8000; } +static inline int16_t pcm_u16be_to_s16(uint16_t n) { return m4af_btoh16(n) ^ 0x8000; } +static inline int32_t pcm_s24le_to_s32(uint8_t *p) { return p[0]<<8 | p[1]<<16 | p[2]<<24; } +static inline int32_t pcm_s24be_to_s32(uint8_t *p) { return p[0]<<24 | p[1]<<16 | p[2]<<8; } +static inline int32_t pcm_u24le_to_s32(uint8_t *p) { return pcm_s24le_to_s32(p) ^ 0x80000000; } +static inline int32_t pcm_u24be_to_s32(uint8_t *p) { return pcm_s24be_to_s32(p) ^ 0x80000000; } +static inline int16_t pcm_s24le_to_s16(uint8_t *p) { return pcm_quantize_s32(pcm_s24le_to_s32(p)); } +static inline int16_t pcm_s24be_to_s16(uint8_t *p) { return pcm_quantize_s32(pcm_s24be_to_s32(p)); } +static inline int16_t pcm_u24le_to_s16(uint8_t *p) { return pcm_quantize_s32(pcm_u24le_to_s32(p)); } +static inline int16_t pcm_u24be_to_s16(uint8_t *p) { return pcm_quantize_s32(pcm_u24be_to_s32(p)); } +static inline int16_t pcm_s32le_to_s16(int32_t n) { return pcm_quantize_s32(m4af_ltoh32(n)); } +static inline int16_t pcm_s32be_to_s16(int32_t n) { return pcm_quantize_s32(m4af_btoh32(n)); } +static inline int16_t pcm_u32le_to_s16(int32_t n) { return pcm_quantize_s32(m4af_ltoh32(n) ^ 0x80000000); } +static inline int16_t pcm_u32be_to_s16(int32_t n) { return pcm_quantize_s32(m4af_btoh32(n) ^ 0x80000000); } +static inline int16_t pcm_f32le_to_s16(int32_t n) { return pcm_quantize_f64(pcm_i2f(m4af_ltoh32(n))); } +static inline int16_t pcm_f32be_to_s16(int32_t n) { return pcm_quantize_f64(pcm_i2f(m4af_btoh32(n))); } +static inline int16_t pcm_f64le_to_s16(int64_t n) { return pcm_quantize_f64(pcm_i2d(m4af_ltoh64(n))); } +static inline int16_t pcm_f64be_to_s16(int64_t n) { return pcm_quantize_f64(pcm_i2d(m4af_btoh64(n)));