#include "lpcm.h"
#include "m4af_endian.h"
-#ifdef _MSC_VER
-# define inline __inline
-# ifdef _M_IX86
-inline int lrint(double x)
-{
- int n;
- _asm {
- fld x
- fistp n
- }
- return n;
-}
-# else
-# include <emmintrin.h>
-inline int lrint(double x)
-{
- return _mm_cvtsd_si32(_mm_load_sd(&x));
-}
-# endif
-#endif
-
-static
-inline double pcm_clip(double n, double min_value, double max_value)
-{
- if (n < min_value)
- return min_value;
- else if (n > max_value)
- return max_value;
- return n;
-}
static
inline float pcm_i2f(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)));
int pcm_convert_to_native_sint16(const pcm_sample_description_t *format,
const void *input, uint32_t nframes,
- int16_t **result, uint32_t *osize)
+ int16_t *result)
{
#define CONVERT(type, conv) \
do { \
unsigned i; \
type *ip = (type *)input; \
for (i = 0; i < count; ++i) { \
- (*result)[i] = conv(ip[i]); \
+ result[i] = conv(ip[i]); \
} \
} while(0)
uint8_t *ip = (uint8_t *)input; \
bytes_per_channel = PCM_BYTES_PER_CHANNEL(format); \
for (i = 0; i < count; ++i) { \
- (*result)[i] = conv(ip); \
+ result[i] = conv(ip); \
ip += bytes_per_channel; \
} \
} while(0)
uint32_t count = nframes * format->channels_per_frame;
if (!count)
return 0;
- if (!*result || *osize < count) {
- *osize = count;
- *result = realloc(*result, count * sizeof(int16_t));
- }
-
switch (PCM_BYTES_PER_CHANNEL(format) | format->sample_type<<4) {
case 1 | PCM_TYPE_SINT<<4:
CONVERT(int8_t, pcm_s8_to_s16); break;