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libatrac: Coldfire asm for atrac3_iqmf_dewindowing, speeds up decoding of my atrac3 rm file by 45%. Based on preliminary patch by Andree Buschmann

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27578 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Nils Wallménius 2010-07-26 17:22:35 +00:00
parent 767c4effc1
commit 6087d89603
1 changed files with 52 additions and 1 deletions
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53
apps/codecs/libatrac/atrac3.c
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@ -124,6 +124,57 @@ static channel_unit channel_units[2] IBSS_ATTR_LARGE_IRAM;
int32_t *in,
int32_t *win,
unsigned int nIn);
#elif defined (CPU_COLDFIRE)
#define MULTIPLY_ADD_BLOCK \
"movem.l (%[win]), %%d0-%%d7 \n\t" \
"lea.l (8*4, %[win]), %[win] \n\t" \
"mac.l %%d0, %%a5, (%[in])+, %%a5, %%acc0\n\t" \
"mac.l %%d1, %%a5, (%[in])+, %%a5, %%acc1\n\t" \
"mac.l %%d2, %%a5, (%[in])+, %%a5, %%acc0\n\t" \
"mac.l %%d3, %%a5, (%[in])+, %%a5, %%acc1\n\t" \
"mac.l %%d4, %%a5, (%[in])+, %%a5, %%acc0\n\t" \
"mac.l %%d5, %%a5, (%[in])+, %%a5, %%acc1\n\t" \
"mac.l %%d6, %%a5, (%[in])+, %%a5, %%acc0\n\t" \
"mac.l %%d7, %%a5, (%[in])+, %%a5, %%acc1\n\t" \
static inline void
atrac3_iqmf_dewindowing(int32_t *out,
int32_t *in,
int32_t *win,
unsigned int nIn)
{
int32_t j;
int32_t *_in, *_win;
for (j = nIn; j != 0; j--, in+=2, out+=2) {
_in = in;
_win = win;
asm volatile (
"move.l (%[in])+, %%a5 \n\t" /* preload frist in value */
MULTIPLY_ADD_BLOCK /* 0.. 7 */
MULTIPLY_ADD_BLOCK /* 8..15 */
MULTIPLY_ADD_BLOCK /* 16..23 */
MULTIPLY_ADD_BLOCK /* 24..31 */
MULTIPLY_ADD_BLOCK /* 32..39 */
/* 40..47 */
"movem.l (%[win]), %%d0-%%d7 \n\t"
"mac.l %%d0, %%a5, (%[in])+, %%a5, %%acc0 \n\t"
"mac.l %%d1, %%a5, (%[in])+, %%a5, %%acc1 \n\t"
"mac.l %%d2, %%a5, (%[in])+, %%a5, %%acc0 \n\t"
"mac.l %%d3, %%a5, (%[in])+, %%a5, %%acc1 \n\t"
"mac.l %%d4, %%a5, (%[in])+, %%a5, %%acc0 \n\t"
"mac.l %%d5, %%a5, (%[in])+, %%a5, %%acc1 \n\t"
"mac.l %%d6, %%a5, (%[in])+, %%a5, %%acc0 \n\t"
"mac.l %%d7, %%a5, %%acc1 \n\t"
"movclr.l %%acc0, %%d1 \n\t" /* s1 */
"movclr.l %%acc1, %%d0 \n\t" /* s2 */
"movem.l %%d0-%%d1, (%[out]) \n\t"
: [in] "+a" (_in), [win] "+a" (_win)
: [out] "a" (out)
: "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "a5", "memory");
}
}
#else
#define MULTIPLY_ADD_BLOCK(y1, y2, x, c, k) \
y1 += fixmul31(c[k], x[k]); k++; \
@ -134,7 +185,7 @@ static channel_unit channel_units[2] IBSS_ATTR_LARGE_IRAM;
y2 += fixmul31(c[k], x[k]); k++; \
y1 += fixmul31(c[k], x[k]); k++; \
y2 += fixmul31(c[k], x[k]); k++;
static inline void
atrac3_iqmf_dewindowing(int32_t *out,
int32_t *in,