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faad does not work yet
This commit is contained in:
philippe44
2019-05-26 19:29:56 -07:00
parent 21860614e8
commit 66b2f74ebe
11 changed files with 223 additions and 121 deletions
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41
main/alac.c
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@@ -23,6 +23,18 @@
#include <alac_wrapper.h>
#if BYTES_PER_FRAME == 4
#define ALIGN8(n) (n << 8)
#define ALIGN16(n) (n)
#define ALIGN24(n) (n >> 8)
#define ALIGN32(n) (n >> 16)
#else
#define ALIGN8(n) (n << 24)
#define ALIGN16(n) (n << 16)
#define ALIGN24(n) (n << 8)
#define ALIGN32(n) (n)
#endif
#define BLOCK_SIZE (4096 * BYTES_PER_FRAME)
#define MIN_READ BLOCK_SIZE
#define MIN_SPACE (MIN_READ * 4)
@@ -433,15 +445,15 @@ static decode_state alac_decode(void) {
while (frames > 0) {
size_t f, count;
s32_t *optr;
ISAMPLE_T *optr;
IF_DIRECT(
f = min(frames, _buf_cont_write(outputbuf) / BYTES_PER_FRAME);
optr = (s32_t *)outputbuf->writep;
optr = (ISAMPLE_T *)outputbuf->writep;
);
IF_PROCESS(
f = min(frames, process.max_in_frames - process.in_frames);
optr = (s32_t *)((u8_t *) process.inbuf + process.in_frames * BYTES_PER_FRAME);
optr = (ISAMPLE_T *)((u8_t *) process.inbuf + process.in_frames * BYTES_PER_FRAME);
);
f = min(f, frames);
@@ -449,32 +461,31 @@ static decode_state alac_decode(void) {
if (l->sample_size == 8) {
while (count--) {
*optr++ = (*(u32_t*) iptr) << 24;
*optr++ = (*(u32_t*) (iptr + 1)) << 24;
iptr += 2;
*optr++ = ALIGN8(*iptr++);
*optr++ = ALIGN8(*iptr++);
}
} else if (l->sample_size == 16) {
u16_t *_iptr = (u16_t*) iptr;
while (count--) {
*optr++ = (*(u32_t*) iptr) << 16;
*optr++ = (*(u32_t*) (iptr + 2)) << 16;
iptr += 4;
*optr++ = ALIGN16(*_iptr++);
*optr++ = ALIGN16(*_iptr++);
}
} else if (l->sample_size == 24) {
while (count--) {
*optr++ = (*(u32_t*) iptr) << 8;
*optr++ = (*(u32_t*) (iptr + 3)) << 8;
*optr++ = ALIGN24(*(u32_t*) iptr);
*optr++ = ALIGN24(*(u32_t*) (iptr + 3));
iptr += 6;
}
} else if (l->sample_size == 32) {
u32_t *_iptr = (u32_t*) iptr;
while (count--) {
*optr++ = (*(u32_t*) iptr);
*optr++ = (*(u32_t*) (iptr + 4));
iptr += 8;
*optr++ = ALIGN32(*_iptr++);
*optr++ = ALIGN32(*_iptr++);
}
} else {
LOG_ERROR("unsupported bits per sample: %u", l->sample_size);
}
frames -= f;
IF_DIRECT(