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add support for 24bit packed samples

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This commit is contained in:
Lennart Poettering 2009-01-16 03:15:39 +01:00
parent 9955398fda
commit 6dc76d1158
15 changed files with 370 additions and 32 deletions
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38
src/pulsecore/endianmacros.h
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@ -45,6 +45,32 @@
#define PA_UINT32_SWAP(x) ( (uint32_t) ( ((uint32_t) (x) >> 24) | ((uint32_t) (x) << 24) | (((uint32_t) (x) & 0xFF00) << 8) | ((((uint32_t) (x)) >> 8) & 0xFF00) ) )
#endif
static inline uint32_t PA_READ24LE(const uint8_t *p) {
return
((uint32_t) p[0] << 16) |
((uint32_t) p[1] << 8) |
((uint32_t) p[2]);
}
static inline uint32_t PA_READ24BE(const uint8_t *p) {
return
((uint32_t) p[2] << 16) |
((uint32_t) p[1] << 8) |
((uint32_t) p[0]);
}
static inline void PA_WRITE24LE(uint8_t *p, uint32_t u) {
p[0] = (uint8_t) (u >> 16);
p[1] = (uint8_t) (u >> 8);
p[2] = (uint8_t) u;
}
static inline void PA_WRITE24BE(uint8_t *p, uint32_t u) {
p[2] = (uint8_t) (u >> 16);
p[1] = (uint8_t) (u >> 8);
p[0] = (uint8_t) u;
}
static inline float PA_FLOAT32_SWAP(float x) {
union {
float f;
@ -91,6 +117,12 @@ static inline float PA_FLOAT32_SWAP(float x) {
#define PA_FLOAT32_TO_LE(x) PA_FLOAT32_SWAP(x)
#define PA_FLOAT32_TO_BE(x) ((float) (x))
#define PA_READ24NE(x) PA_READ24BE(x)
#define PA_WRITE24NE(x,y) PA_WRITE24BE((x),(y))
#define PA_READ24RE(x) PA_READ24LE(x)
#define PA_WRITE24RE(x,y) PA_WRITE24LE((x),(y))
#else
#define PA_INT16_FROM_LE(x) ((int16_t)(x))
#define PA_INT16_FROM_BE(x) PA_INT16_SWAP(x)
@ -118,6 +150,12 @@ static inline float PA_FLOAT32_SWAP(float x) {
#define PA_FLOAT32_TO_LE(x) ((float) (x))
#define PA_FLOAT32_TO_BE(x) PA_FLOAT32_SWAP(x)
#define PA_READ24NE(x) PA_READ24LE(x)
#define PA_WRITE24NE(x,y) PA_WRITE24LE((x),(y))
#define PA_READ24RE(x) PA_READ24BE(x)
#define PA_WRITE24RE(x,y) PA_WRITE24BE((x),(y))
#endif
#endif