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remap: make the MMX code pretier

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This commit is contained in:
Wim Taymans 2009-08-20 20:00:50 +02:00
parent 6e5dbed51e
commit 6076cef209
1 changed files with 24 additions and 50 deletions
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74
src/pulsecore/remap_mmx.c
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@ -73,6 +73,28 @@
" add $4, %1 \n\t" \
" add $8, %0 \n\t"
#define MONO_TO_STEREO(s) \
" mov %3, %2 \n\t" \
" sar $3, %2 \n\t" \
" cmp $0, %2 \n\t" \
" je 2f \n\t" \
"1: \n\t" \
LOAD_SAMPLES \
UNPACK_SAMPLES(s) \
STORE_SAMPLES \
" dec %2 \n\t" \
" jne 1b \n\t" \
"2: \n\t" \
" mov %3, %2 \n\t" \
" and $7, %2 \n\t" \
" je 4f \n\t" \
"3: \n\t" \
HANDLE_SINGLE(s) \
" dec %2 \n\t" \
" jne 3b \n\t" \
"4: \n\t" \
" emms \n\t"
static void remap_mono_to_stereo_mmx (pa_remap_t *m, void *dst, const void *src, unsigned n) {
pa_reg_x86 temp;
@ -80,31 +102,7 @@ static void remap_mono_to_stereo_mmx (pa_remap_t *m, void *dst, const void *src,
case PA_SAMPLE_FLOAT32NE:
{
__asm__ __volatile__ (
" mov %3, %2 \n\t"
" sar $3, %2 \n\t" /* prepare for processing 8 samples at a time */
" cmp $0, %2 \n\t"
" je 2f \n\t"
"1: \n\t" /* do samples in groups of 8 */
LOAD_SAMPLES
UNPACK_SAMPLES(dq)
STORE_SAMPLES
" dec %2 \n\t"
" jne 1b \n\t"
"2: \n\t"
" mov %3, %2 \n\t"
" and $7, %2 \n\t" /* prepare for processing the remaining samples */
" je 4f \n\t"
"3: \n\t"
HANDLE_SINGLE(dq)
" dec %2 \n\t"
" jne 3b \n\t"
"4: \n\t"
" emms \n\t"
MONO_TO_STEREO(dq) /* do doubles to quads */
: "+r" (dst), "+r" (src), "=&r" (temp)
: "r" ((pa_reg_x86)n)
: "cc"
@ -114,31 +112,7 @@ static void remap_mono_to_stereo_mmx (pa_remap_t *m, void *dst, const void *src,
case PA_SAMPLE_S16NE:
{
__asm__ __volatile__ (
" mov %3, %2 \n\t"
" sar $3, %2 \n\t" /* prepare for processing 8 samples at a time */
" cmp $0, %2 \n\t"
" je 2f \n\t"
"1: \n\t" /* do samples in groups of 16 */
LOAD_SAMPLES
UNPACK_SAMPLES(wd)
STORE_SAMPLES
" dec %2 \n\t"
" jne 1b \n\t"
"2: \n\t"
" mov %3, %2 \n\t"
" and $7, %2 \n\t" /* prepare for processing the remaining samples */
" je 4f \n\t"
"3: \n\t"
HANDLE_SINGLE(wd)
" dec %2 \n\t"
" jne 3b \n\t"
"4: \n\t"
" emms \n\t"
MONO_TO_STEREO(wd) /* do words to doubles */
: "+r" (dst), "+r" (src), "=&r" (temp)
: "r" ((pa_reg_x86)n)
: "cc"