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AltiVec perf (take 2), plus a couple AltiVec functions by (Romain Dolbeau <dolbeau at irisa dot fr>)

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Originally committed as revision 1464 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-01-16 21:54:55 +00:00
parent f44a2df04f
commit db40a39aba
11 changed files with 466 additions and 40 deletions
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4
configure vendored
View File

@ -644,6 +644,10 @@ fi
if test "$altivec" = "yes" ; then
echo "TARGET_ALTIVEC=yes" >> config.mak
echo "#define HAVE_ALTIVEC 1" >> $TMPH
echo "// Enable the next line to get AltiVec performance report" >> $TMPH
echo "// #define ALTIVEC_TBL_PERFORMANCE_REPORT 1" >> $TMPH
echo "// Enable the next line to use the reference C code instead of AltiVec" >> $TMPH
echo "// #define ALTIVEC_USE_REFERENCE_C_CODE 1" >> $TMPH
fi
if test "$gprof" = "yes" ; then
echo "TARGET_GPROF=yes" >> config.mak

7
ffmpeg.c
View File

@ -2829,5 +2829,12 @@ int main(int argc, char **argv)
av_close_input_file(input_files[i]);
av_free_static();
#ifdef ALTIVEC_TBL_PERFORMANCE_REPORT
extern void altivec_display_perf_report(void);
altivec_display_perf_report();
#endif /* ALTIVEC_TBL_PERFORMANCE_REPORT */
return 0;
}

4
libavcodec/fft.c
View File

@ -53,12 +53,12 @@ int fft_init(FFTContext *s, int nbits, int inverse)
/* compute constant table for HAVE_SSE version */
#if (defined(HAVE_MMX) && defined(HAVE_BUILTIN_VECTOR)) || defined(HAVE_ALTIVEC)
{
int has_vectors;
int has_vectors = 0;
#if defined(HAVE_MMX)
has_vectors = mm_support() & MM_SSE;
#endif
#if defined(HAVE_ALTIVEC)
#if defined(HAVE_ALTIVEC) && !defined(ALTIVEC_USE_REFERENCE_C_CODE)
has_vectors = mm_support() & MM_ALTIVEC;
#endif
if (has_vectors) {

233
libavcodec/ppc/dsputil_altivec.c
View File

@ -24,6 +24,22 @@
#include <sys/sysctl.h>
#endif
#ifdef ALTIVEC_TBL_PERFORMANCE_REPORT
unsigned long long perfdata[altivec_perf_total][altivec_data_total];
/* list below must match enum in dsputil_altivec.h */
static unsigned char* perfname[] = {
"fft_calc",
"gmc1",
"dct_unquantize_h263",
"idct_add",
"idct_put",
"put_pixels_clamped",
"put_pixels16",
"avg_pixels16"
};
#include <stdio.h>
#endif
int pix_abs16x16_x2_altivec(uint8_t *pix1, uint8_t *pix2, int line_size)
{
int i;
@ -594,7 +610,7 @@ int sad8x8_altivec(void *s, uint8_t *a, uint8_t *b, int stride) {
}
void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) {
#if 0
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
int i;
for(i=0; i+7<w; i++){
dst[i+0] += src[i+0];
@ -608,38 +624,188 @@ void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) {
}
for(; i<w; i++)
dst[i+0] += src[i+0];
#else
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
register int i;
register uint8_t *temp_src = src, *temp_dst = dst;
register vector unsigned char vdst, vsrc, temp1, temp2;
register vector unsigned char perm;
register int count = 0;
register vector unsigned char vdst, vsrc;
for (i = 0; (i < w) && ((unsigned long)temp_dst & 0x0000000F) ; i++)
/* dst and src are 16 bytes-aligned (guaranteed) */
for(i = 0 ; (i + 15) < w ; i++)
{
dst[i] = src[i];
temp_src ++;
temp_dst ++;
}
/* temp_dst is a properly aligned pointer */
/* we still need to deal with ill-aligned src */
perm = vec_lvsl(0, temp_src);
temp1 = vec_ld(0, temp_src);
while ((i + 15) < w)
{
temp2 = vec_ld(count + 16, temp_src);
vdst = vec_ld(count, temp_dst);
vsrc = vec_perm(temp1, temp2, perm);
temp1 = temp2;
vdst = vec_ld(i << 4, (unsigned char*)dst);
vsrc = vec_ld(i << 4, (unsigned char*)src);
vdst = vec_add(vsrc, vdst);
vec_st(vdst, count, temp_dst);
count += 16;
vec_st(vdst, i << 4, (unsigned char*)dst);
}
/* if w is not a multiple of 16 */
for (; (i < w) ; i++)
{
dst[i] = src[i];
}
#endif
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}
extern UINT8 cropTbl[];
void put_pixels_clamped_altivec(const DCTELEM *block, UINT8 *restrict pixels,
int line_size)
{
ALTIVEC_TBL_DECLARE(altivec_put_pixels_clamped_num, 1);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
int i;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
ALTIVEC_TBL_START_COUNT(altivec_put_pixels_clamped_num, 1);
/* read the pixels */
for(i=0;i<8;i++) {
pixels[0] = cm[block[0]];
pixels[1] = cm[block[1]];
pixels[2] = cm[block[2]];
pixels[3] = cm[block[3]];
pixels[4] = cm[block[4]];
pixels[5] = cm[block[5]];
pixels[6] = cm[block[6]];
pixels[7] = cm[block[7]];
pixels += line_size;
block += 8;
}
ALTIVEC_TBL_STOP_COUNT(altivec_put_pixels_clamped_num, 1);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
register const vector short vczero = (const vector short)(0);
register vector short
blockv0, blockv1, blockv2, blockv3,
blockv4, blockv5, blockv6, blockv7;
register vector unsigned char
pixelsv0, pixelsv1, pixelsv2, pixelsv3, pixelsv4,
pixelsv0old, pixelsv4old;
ALTIVEC_TBL_START_COUNT(altivec_put_pixels_clamped_num, 1);
blockv0 = vec_ld(0, block);
blockv1 = vec_ld(16, block);
blockv2 = vec_ld(32, block);
blockv3 = vec_ld(48, block);
blockv4 = vec_ld(64, block);
blockv5 = vec_ld(80, block);
blockv6 = vec_ld(96, block);
blockv7 = vec_ld(112, block);
if (((unsigned long)pixels) & 0x0000000F)
{
pixelsv0old = vec_ld(-8, pixels);
pixelsv4old = vec_ld(56, pixels);
pixelsv0 = vec_packsu(vczero, blockv0);
pixelsv1 = vec_packsu(blockv1, blockv2);
pixelsv2 = vec_packsu(blockv3, blockv4);
pixelsv3 = vec_packsu(blockv5, blockv6);
pixelsv4 = vec_packsu(blockv5, vczero);
pixelsv0 = vec_perm(pixelsv0old, pixelsv0, vcprm(0, 1, s2, s3));
pixelsv4 = vec_perm(pixelsv4, pixelsv4old, vcprm(0, 1, s2, s3));
vec_st(pixelsv0, -8, pixels);
vec_st(pixelsv1, 8, pixels);
vec_st(pixelsv2, 24, pixels);
vec_st(pixelsv3, 40, pixels);
vec_st(pixelsv4, 56, pixels);
}
else
{
pixelsv0 = vec_packsu(blockv0, blockv1);
pixelsv1 = vec_packsu(blockv2, blockv3);
pixelsv2 = vec_packsu(blockv4, blockv5);
pixelsv3 = vec_packsu(blockv6, blockv7);
vec_st(pixelsv0, 0, pixels);
vec_st(pixelsv1, 16, pixels);
vec_st(pixelsv2, 32, pixels);
vec_st(pixelsv3, 48, pixels);
}
ALTIVEC_TBL_STOP_COUNT(altivec_put_pixels_clamped_num, 1);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}
void put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ALTIVEC_TBL_DECLARE(altivec_put_pixels16_num, 1);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
int i;
ALTIVEC_TBL_START_COUNT(altivec_put_pixels16_num, 1);
for(i=0; i<h; i++) {
*((uint32_t*)(block )) = (((const struct unaligned_32 *) (pixels))->l);
*((uint32_t*)(block+4)) = (((const struct unaligned_32 *) (pixels+4))->l);
*((uint32_t*)(block+8)) = (((const struct unaligned_32 *) (pixels+8))->l);
*((uint32_t*)(block+12)) = (((const struct unaligned_32 *) (pixels+12))->l);
pixels+=line_size;
block +=line_size;
}
ALTIVEC_TBL_STOP_COUNT(altivec_put_pixels16_num, 1);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
register vector unsigned char perm = vec_lvsl(0, pixels);
register vector unsigned char pixelsv1, pixelsv2;
int i;
ALTIVEC_TBL_START_COUNT(altivec_put_pixels16_num, 1);
for(i=0; i<h; i++) {
pixelsv1 = vec_ld(0, (unsigned char*)pixels);
pixelsv2 = vec_ld(16, (unsigned char*)pixels);
vec_st(vec_perm(pixelsv1, pixelsv2, perm), 0, (unsigned char*)block);
pixels+=line_size;
block +=line_size;
}
ALTIVEC_TBL_STOP_COUNT(altivec_put_pixels16_num, 1);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}
#define op_avg(a,b) a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) )
void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ALTIVEC_TBL_DECLARE(altivec_avg_pixels16_num, 1);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
int i;
ALTIVEC_TBL_START_COUNT(altivec_avg_pixels16_num, 1);
for(i=0; i<h; i++) {
op_avg(*((uint32_t*)(block)),(((const struct unaligned_32 *)(pixels))->l));
op_avg(*((uint32_t*)(block+4)),(((const struct unaligned_32 *)(pixels+4))->l));
op_avg(*((uint32_t*)(block+8)),(((const struct unaligned_32 *)(pixels+8))->l));
op_avg(*((uint32_t*)(block+12)),(((const struct unaligned_32 *)(pixels+12))->l));
pixels+=line_size;
block +=line_size;
}
ALTIVEC_TBL_STOP_COUNT(altivec_avg_pixels16_num, 1);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
register vector unsigned char perm = vec_lvsl(0, pixels);
register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;
int i;
ALTIVEC_TBL_START_COUNT(altivec_avg_pixels16_num, 1);
for(i=0; i<h; i++) {
pixelsv1 = vec_ld(0, (unsigned char*)pixels);
pixelsv2 = vec_ld(16, (unsigned char*)pixels);
blockv = vec_ld(0, block);
pixelsv = vec_perm(pixelsv1, pixelsv2, perm);
blockv = vec_avg(blockv,pixelsv);
vec_st(blockv, 0, (unsigned char*)block);
pixels+=line_size;
block +=line_size;
}
ALTIVEC_TBL_STOP_COUNT(altivec_avg_pixels16_num, 1);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}
int has_altivec(void)
@ -656,3 +822,22 @@ int has_altivec(void)
#endif
return 0;
}
#ifdef ALTIVEC_TBL_PERFORMANCE_REPORT
void altivec_display_perf_report(void)
{
int i;
fprintf(stderr, "AltiVec performance report\n Values are from the Time Base register, and represent 4 bus cycles.\n");
for(i = 0 ; i < altivec_perf_total ; i++)
{
if (perfdata[i][altivec_data_num] != (unsigned long long)0)
fprintf(stderr, " Function \"%s\":\n\tmin: %llu\n\tmax: %llu\n\tavg: %1.2lf (%llu)\n",
perfname[i],
perfdata[i][altivec_data_min],
perfdata[i][altivec_data_max],
(double)perfdata[i][altivec_data_sum] /
(double)perfdata[i][altivec_data_num],
perfdata[i][altivec_data_num]);
}
}
#endif /* ALTIVEC_TBL_PERFORMANCE_REPORT */

65
libavcodec/ppc/dsputil_altivec.h
View File

@ -31,13 +31,16 @@ extern int pix_sum_altivec(UINT8 * pix, int line_size);
extern void diff_pixels_altivec(DCTELEM* block, const UINT8* s1, const UINT8* s2, int stride);
extern void get_pixels_altivec(DCTELEM* block, const UINT8 * pixels, int line_size);
extern void gmc1_altivec(UINT8 *dst, UINT8 *src, int stride, int h, int x16, int y16, int rounder);
extern void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w);
extern void put_pixels_clamped_altivec(const DCTELEM *block, UINT8 *restrict pixels, int line_size);
void put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h);
void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h);
extern void gmc1_altivec(UINT8 *dst, UINT8 *src, int stride, int h, int x16, int y16, int rounder);
extern int has_altivec(void);
#ifdef HAVE_ALTIVEC
// used to build registers permutation vectors (vcprm)
// the 's' are for words in the _s_econd vector
@ -63,3 +66,59 @@ extern int has_altivec(void);
#define FLOAT_p 1.
#define vcii(a,b,c,d) (const vector float)(FLOAT_ ## a, FLOAT_ ## b, FLOAT_ ## c, FLOAT_ ## d)
#ifdef ALTIVEC_TBL_PERFORMANCE_REPORT
void altivec_display_perf_report(void);
/* if you add to the enum below, also add to the perfname array
in dsputil_altivec.c */
enum altivec_perf_index {
altivec_fft_num = 0,
altivec_gmc1_num,
altivec_dct_unquantize_h263_num,
altivec_idct_add_num,
altivec_idct_put_num,
altivec_put_pixels_clamped_num,
altivec_put_pixels16_num,
altivec_avg_pixels16_num,
altivec_perf_total
};
enum altivec_data_index {
altivec_data_min = 0,
altivec_data_max,
altivec_data_sum,
altivec_data_num,
altivec_data_total
};
extern unsigned long long perfdata[altivec_perf_total][altivec_data_total];
#define ALTIVEC_TBL_DECLARE(a, cond) register unsigned long tbl_start, tbl_stop
#define ALTIVEC_TBL_START_COUNT(a, cond) do { asm("mftb %0" : "=r" (tbl_start)); } while (0)
#define ALTIVEC_TBL_STOP_COUNT(a, cond) do { \
asm volatile("mftb %0" : "=r" (tbl_stop)); \
if (tbl_stop > tbl_start) \
{ \
unsigned long diff = tbl_stop - tbl_start; \
if (cond) \
{ \
if (diff < perfdata[a][altivec_data_min]) \
perfdata[a][altivec_data_min] = diff; \
if (diff > perfdata[a][altivec_data_max]) \
perfdata[a][altivec_data_max] = diff; \
perfdata[a][altivec_data_sum] += diff; \
perfdata[a][altivec_data_num] ++; \
} \
} \
} while (0)
#else /* ALTIVEC_TBL_PERFORMANCE_REPORT */
#define ALTIVEC_TBL_DECLARE(a, cond)
#define ALTIVEC_TBL_START_COUNT(a, cond)
#define ALTIVEC_TBL_STOP_COUNT(a, cond)
#endif /* ALTIVEC_TBL_PERFORMANCE_REPORT */
#else /* HAVE_ALTIVEC */
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
#error "I can't use ALTIVEC_USE_REFERENCE_C_CODE if I don't use HAVE_ALTIVEC"
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
#ifdef ALTIVEC_TBL_PERFORMANCE_REPORT
#error "I can't use ALTIVEC_TBL_PERFORMANCE_REPORT if I don't use HAVE_ALTIVEC"
#endif /* ALTIVEC_TBL_PERFORMANCE_REPORT */
#endif /* HAVE_ALTIVEC */

18
libavcodec/ppc/dsputil_ppc.c
View File

@ -60,11 +60,27 @@ void dsputil_init_ppc(DSPContext* c, unsigned mask)
c->pix_sum = pix_sum_altivec;
c->diff_pixels = diff_pixels_altivec;
c->get_pixels = get_pixels_altivec;
// next one disabled as it it untested.
// next two disabled as they're untested.
#if 0
c->add_bytes= add_bytes_altivec;
c->put_pixels_clamped = put_pixels_clamped_altivec;
#endif
c->put_pixels_tab[0][0] = put_pixels16_altivec;
c->avg_pixels_tab[0][0] = avg_pixels16_altivec;
c->gmc1 = gmc1_altivec;
#ifdef ALTIVEC_TBL_PERFORMANCE_REPORT
{
int i;
for (i = 0 ; i < altivec_perf_total ; i++)
{
perfdata[i][altivec_data_min] = 0xFFFFFFFFFFFFFFFF;
perfdata[i][altivec_data_max] = 0x0000000000000000;
perfdata[i][altivec_data_sum] = 0x0000000000000000;
perfdata[i][altivec_data_num] = 0x0000000000000000;
}
}
#endif
} else
#endif
{

110
libavcodec/ppc/fft_altivec.c
View File

@ -22,6 +22,31 @@
#include "dsputil_altivec.h"
/*
those three macros are from libavcodec/fft.c
and are required for the reference C code
*/
/* butter fly op */
#define BF(pre, pim, qre, qim, pre1, pim1, qre1, qim1) \
{\
FFTSample ax, ay, bx, by;\
bx=pre1;\
by=pim1;\
ax=qre1;\
ay=qim1;\
pre = (bx + ax);\
pim = (by + ay);\
qre = (bx - ax);\
qim = (by - ay);\
}
#define MUL16(a,b) ((a) * (b))
#define CMUL(pre, pim, are, aim, bre, bim) \
{\
pre = (MUL16(are, bre) - MUL16(aim, bim));\
pim = (MUL16(are, bim) + MUL16(bre, aim));\
}
/**
* Do a complex FFT with the parameters defined in fft_init(). The
* input data must be permuted before with s->revtab table. No
@ -35,6 +60,84 @@
*/
void fft_calc_altivec(FFTContext *s, FFTComplex *z)
{
ALTIVEC_TBL_DECLARE(altivec_fft_num, s->nbits >= 6);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
int ln = s->nbits;
int j, np, np2;
int nblocks, nloops;
register FFTComplex *p, *q;
FFTComplex *exptab = s->exptab;
int l;
FFTSample tmp_re, tmp_im;
ALTIVEC_TBL_START_COUNT(altivec_fft_num, s->nbits >= 6);
np = 1 << ln;
/* pass 0 */
p=&z[0];
j=(np >> 1);
do {
BF(p[0].re, p[0].im, p[1].re, p[1].im,
p[0].re, p[0].im, p[1].re, p[1].im);
p+=2;
} while (--j != 0);
/* pass 1 */
p=&z[0];
j=np >> 2;
if (s->inverse) {
do {
BF(p[0].re, p[0].im, p[2].re, p[2].im,
p[0].re, p[0].im, p[2].re, p[2].im);
BF(p[1].re, p[1].im, p[3].re, p[3].im,
p[1].re, p[1].im, -p[3].im, p[3].re);
p+=4;
} while (--j != 0);
} else {
do {
BF(p[0].re, p[0].im, p[2].re, p[2].im,
p[0].re, p[0].im, p[2].re, p[2].im);
BF(p[1].re, p[1].im, p[3].re, p[3].im,
p[1].re, p[1].im, p[3].im, -p[3].re);
p+=4;
} while (--j != 0);
}
/* pass 2 .. ln-1 */
nblocks = np >> 3;
nloops = 1 << 2;
np2 = np >> 1;
do {
p = z;
q = z + nloops;
for (j = 0; j < nblocks; ++j) {
BF(p->re, p->im, q->re, q->im,
p->re, p->im, q->re, q->im);
p++;
q++;
for(l = nblocks; l < np2; l += nblocks) {
CMUL(tmp_re, tmp_im, exptab[l].re, exptab[l].im, q->re, q->im);
BF(p->re, p->im, q->re, q->im,
p->re, p->im, tmp_re, tmp_im);
p++;
q++;
}
p += nloops;
q += nloops;
}
nblocks = nblocks >> 1;
nloops = nloops << 1;
} while (nblocks != 0);
ALTIVEC_TBL_STOP_COUNT(altivec_fft_num, s->nbits >= 6);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
register const vector float vczero = (const vector float)(0.);
int ln = s->nbits;
@ -44,6 +147,8 @@ void fft_calc_altivec(FFTContext *s, FFTComplex *z)
FFTComplex *cptr, *cptr1;
int k;
ALTIVEC_TBL_START_COUNT(altivec_fft_num, s->nbits >= 6);
np = 1 << ln;
{
@ -129,5 +234,8 @@ void fft_calc_altivec(FFTContext *s, FFTComplex *z)
nblocks = nblocks >> 1;
nloops = nloops << 1;
} while (nblocks != 0);
}
ALTIVEC_TBL_STOP_COUNT(altivec_fft_num, s->nbits >= 6);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}

20
libavcodec/ppc/gmc_altivec.c
View File

@ -28,14 +28,16 @@
*/
void gmc1_altivec(UINT8 *dst /* align 8 */, UINT8 *src /* align1 */, int stride, int h, int x16, int y16, int rounder)
{
#if 0
ALTIVEC_TBL_DECLARE(altivec_gmc1_num, h == 8);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
const int A=(16-x16)*(16-y16);
const int B=( x16)*(16-y16);
const int C=(16-x16)*( y16);
const int D=( x16)*( y16);
int i;
ALTIVEC_TBL_START_COUNT(altivec_gmc1_num, h == 8);
for(i=0; i<h; i++)
{
dst[0]= (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + rounder)>>8;
@ -49,7 +51,10 @@ void gmc1_altivec(UINT8 *dst /* align 8 */, UINT8 *src /* align1 */, int stride,
dst+= stride;
src+= stride;
}
#else
ALTIVEC_TBL_STOP_COUNT(altivec_gmc1_num, h == 8);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
const unsigned short __attribute__ ((aligned(16))) rounder_a[8] =
{rounder, rounder, rounder, rounder,
rounder, rounder, rounder, rounder};
@ -61,7 +66,6 @@ void gmc1_altivec(UINT8 *dst /* align 8 */, UINT8 *src /* align1 */, int stride,
( x16)*( y16), /* D */
0, 0, 0, 0 /* padding */
};
register const vector unsigned char vczero = (const vector unsigned char)(0);
register const vector unsigned short vcsr8 = (const vector unsigned short)(8);
register vector unsigned char dstv, dstv2, src_0, src_1, srcvA, srcvB, srcvC, srcvD;
@ -70,6 +74,9 @@ void gmc1_altivec(UINT8 *dst /* align 8 */, UINT8 *src /* align1 */, int stride,
unsigned long dst_odd = (unsigned long)dst & 0x0000000F;
unsigned long src_really_odd = (unsigned long)src & 0x0000000F;
ALTIVEC_TBL_START_COUNT(altivec_gmc1_num, h == 8);
tempA = vec_ld(0, (unsigned short*)ABCD);
Av = vec_splat(tempA, 0);
Bv = vec_splat(tempA, 1);
@ -155,5 +162,8 @@ void gmc1_altivec(UINT8 *dst /* align 8 */, UINT8 *src /* align1 */, int stride,
dst += stride;
src += stride;
}
#endif
ALTIVEC_TBL_STOP_COUNT(altivec_gmc1_num, h == 8);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}

25
libavcodec/ppc/idct_altivec.c
View File

@ -38,6 +38,7 @@
#include <stdlib.h> /* malloc(), free() */
#include <string.h>
#include "../dsputil.h"
#include "dsputil_altivec.h"
#define vector_s16_t vector signed short
#define vector_u16_t vector unsigned short
@ -160,8 +161,17 @@ static const vector_s16_t constants[5] = {
void idct_put_altivec(uint8_t* dest, int stride, vector_s16_t* block)
{
ALTIVEC_TBL_DECLARE(altivec_idct_put_num, 1);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
ALTIVEC_TBL_START_COUNT(altivec_idct_put_num, 1);
void simple_idct_put(UINT8 *dest, int line_size, INT16 *block);
simple_idct_put(dest, stride, (INT16*)block);
ALTIVEC_TBL_STOP_COUNT(altivec_idct_put_num, 1);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
vector_u8_t tmp;
ALTIVEC_TBL_START_COUNT(altivec_idct_put_num, 1);
IDCT
#define COPY(dest,src) \
@ -177,16 +187,28 @@ void idct_put_altivec(uint8_t* dest, int stride, vector_s16_t* block)
COPY (dest, vx5) dest += stride;
COPY (dest, vx6) dest += stride;
COPY (dest, vx7)
ALTIVEC_TBL_STOP_COUNT(altivec_idct_put_num, 1);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}
void idct_add_altivec(uint8_t* dest, int stride, vector_s16_t* block)
{
ALTIVEC_TBL_DECLARE(altivec_idct_add_num, 1);
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
ALTIVEC_TBL_START_COUNT(altivec_idct_add_num, 1);
void simple_idct_add(UINT8 *dest, int line_size, INT16 *block);
simple_idct_add(dest, stride, (INT16*)block);
ALTIVEC_TBL_STOP_COUNT(altivec_idct_add_num, 1);
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
vector_u8_t tmp;
vector_s16_t tmp2, tmp3;
vector_u8_t perm0;
vector_u8_t perm1;
vector_u8_t p0, p1, p;
ALTIVEC_TBL_START_COUNT(altivec_idct_add_num, 1);
IDCT
p0 = vec_lvsl (0, dest);
@ -212,5 +234,8 @@ void idct_add_altivec(uint8_t* dest, int stride, vector_s16_t* block)
ADD (dest, vx5, perm1) dest += stride;
ADD (dest, vx6, perm0) dest += stride;
ADD (dest, vx7, perm1)
ALTIVEC_TBL_STOP_COUNT(altivec_idct_add_num, 1);
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}

14
libavcodec/ppc/mpegvideo_altivec.c
View File

@ -20,6 +20,7 @@
#include <stdio.h>
#include "../dsputil.h"
#include "../mpegvideo.h"
#include "dsputil_altivec.h"
// Swaps two variables (used for altivec registers)
#define SWAP(a,b) \
@ -510,11 +511,14 @@ int dct_quantize_altivec(MpegEncContext* s,
void dct_unquantize_h263_altivec(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
ALTIVEC_TBL_DECLARE(altivec_dct_unquantize_h263_num, 1);
int i, level, qmul, qadd;
int nCoeffs;
assert(s->block_last_index[n]>=0);
ALTIVEC_TBL_START_COUNT(altivec_dct_unquantize_h263_num, 1);
qadd = (qscale - 1) | 1;
qmul = qscale << 1;
@ -533,7 +537,7 @@ void dct_unquantize_h263_altivec(MpegEncContext *s,
nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
}
#if 0
#ifdef ALTIVEC_USE_REFERENCE_C_CODE
for(;i<=nCoeffs;i++) {
level = block[i];
if (level) {
@ -545,7 +549,7 @@ void dct_unquantize_h263_altivec(MpegEncContext *s,
block[i] = level;
}
}
#else
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
{
register const vector short vczero = (const vector short)(0);
short __attribute__ ((aligned(16))) qmul8[] =
@ -572,6 +576,7 @@ void dct_unquantize_h263_altivec(MpegEncContext *s,
qaddv = vec_ld(0, qadd8);
nqaddv = vec_ld(0, nqadd8);
#if 0 // block *is* 16 bytes-aligned, it seems.
// first make sure block[j] is 16 bytes-aligned
for(j = 0; (j <= nCoeffs) && ((((unsigned long)block) + (j << 1)) & 0x0000000F) ; j++) {
level = block[j];
@ -584,6 +589,7 @@ void dct_unquantize_h263_altivec(MpegEncContext *s,
block[j] = level;
}
}
#endif
// vectorize all the 16 bytes-aligned blocks
// of 8 elements
@ -622,5 +628,7 @@ void dct_unquantize_h263_altivec(MpegEncContext *s,
block[0] = backup_0;
}
}
#endif
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
ALTIVEC_TBL_STOP_COUNT(altivec_dct_unquantize_h263_num, nCoeffs == 63);
}

4
libavcodec/ppc/mpegvideo_ppc.c
View File

@ -44,7 +44,11 @@ void MPV_common_init_ppc(MpegEncContext *s)
{
s->idct_put = idct_put_altivec;
s->idct_add = idct_add_altivec;
#ifndef ALTIVEC_USE_REFERENCE_C_CODE
s->idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
#else /* ALTIVEC_USE_REFERENCE_C_CODE */
s->idct_permutation_type = FF_NO_IDCT_PERM;
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
}
// Test to make sure that the dct required alignments are met.