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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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17
main/mad.c
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@@ -88,15 +88,18 @@ extern struct processstate process;
#endif
// based on libmad minimad.c scale
static inline u32_t scale(mad_fixed_t sample) {
static inline ISAMPLE_T scale(mad_fixed_t sample) {
sample += (1L << (MAD_F_FRACBITS - 24));
if (sample >= MAD_F_ONE)
sample = MAD_F_ONE - 1;
else if (sample < -MAD_F_ONE)
sample = -MAD_F_ONE;
return (s32_t)(sample >> (MAD_F_FRACBITS + 1 - 24)) << 8;
#if BYTES_PER_FRAME == 4
return (ISAMPLE_T)((sample >> (MAD_F_FRACBITS + 1 - 24)) >> 8);
#else
return (ISAMPLE_T)((sample >> (MAD_F_FRACBITS + 1 - 24)) << 8);
#endif
}
// check for id3.2 tag at start of file - http://id3.org/id3v2.4.0-structure, return length
@@ -300,15 +303,15 @@ static decode_state mad_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);
);
count = f;
@@ -317,7 +320,7 @@ static decode_state mad_decode(void) {
*optr++ = scale(*iptrl++);
*optr++ = scale(*iptrr++);
}
frames -= f;
IF_DIRECT(