+
+static inline void hScale_altivec_real(int16_t *dst, int dstW, uint8_t *src, int srcW, int xInc, int16_t *filter, int16_t *filterPos, int filterSize) {
+ register int i;
+ int __attribute__ ((aligned (16))) tempo[4];
+
+ if (filterSize % 4) {
+ for(i=0; i<dstW; i++) {
+ register int j;
+ register int srcPos = filterPos[i];
+ register int val = 0;
+ for(j=0; j<filterSize; j++) {
+ val += ((int)src[srcPos + j])*filter[filterSize*i + j];
+ }
+ dst[i] = MIN(MAX(0, val>>7), (1<<15)-1);
+ }
+ }
+ else
+ switch (filterSize) {
+ case 4:
+ {
+ for(i=0; i<dstW; i++) {
+ register int j;
+ register int srcPos = filterPos[i];
+
+ vector unsigned char src_v0 = vec_ld(srcPos, src);
+ vector unsigned char src_v1;
+ if ((((int)src + srcPos)% 16) > 12) {
+ src_v1 = vec_ld(srcPos + 16, src);
+ }
+ vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
+
+ vector signed short src_v = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
+ // now put our elements in the even slots
+ src_v = vec_mergeh(src_v, (vector signed short)vzero);
+
+ vector signed short filter_v = vec_ld(i << 3, filter);
+ // the 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2)
+
+ // the neat trick : we only care for half the elements,
+ // high or low depending on (i<<3)%16 (it's 0 or 8 here),
+ // and we're going to use vec_mule, so we chose
+ // carefully how to "unpack" the elements into the even slots
+ if ((i << 3) % 16)
+ filter_v = vec_mergel(filter_v,(vector signed short)vzero);
+ else
+ filter_v = vec_mergeh(filter_v,(vector signed short)vzero);
+
+ vector signed int val_vEven = vec_mule(src_v, filter_v);
+ vector signed int val_s = vec_sums(val_vEven, vzero);
+ vec_st(val_s, 0, tempo);
+ dst[i] = MIN(MAX(0, tempo[3]>>7), (1<<15)-1);
+ }
+ }
+ break;
+
+ case 8:
+ {
+ for(i=0; i<dstW; i++) {
+ register int srcPos = filterPos[i];
+
+ vector unsigned char src_v0 = vec_ld(srcPos, src);
+ vector unsigned char src_v1;
+ if ((((int)src + srcPos)% 16) > 8) {
+ src_v1 = vec_ld(srcPos + 16, src);
+ }
+ vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
+
+ vector signed short src_v = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
+ vector signed short filter_v = vec_ld(i << 4, filter);
+ // the 4 above is 3 (filterSize == 8) + 1 (sizeof(short) == 2)
+
+ vector signed int val_v = vec_msums(src_v, filter_v, (vector signed int)vzero);
+ vector signed int val_s = vec_sums(val_v, vzero);
+ vec_st(val_s, 0, tempo);
+ dst[i] = MIN(MAX(0, tempo[3]>>7), (1<<15)-1);
+ }
+ }
+ break;
+
+ case 16:
+ {
+ for(i=0; i<dstW; i++) {
+ register int srcPos = filterPos[i];
+
+ vector unsigned char src_v0 = vec_ld(srcPos, src);
+ vector unsigned char src_v1 = vec_ld(srcPos + 16, src);
+ vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));
+
+ vector signed short src_vA = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
+ vector signed short src_vB = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));
+
+ vector signed short filter_v0 = vec_ld(i << 5, filter);
+ vector signed short filter_v1 = vec_ld((i << 5) + 16, filter);
+ // the 5 above are 4 (filterSize == 16) + 1 (sizeof(short) == 2)
+
+ vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero);
+ vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc);
+
+ vector signed int val_s = vec_sums(val_v, vzero);
+
+ vec_st(val_s, 0, tempo);
+ dst[i] = MIN(MAX(0, tempo[3]>>7), (1<<15)-1);
+ }
+ }
+ break;
+
+ default:
+ {
+ for(i=0; i<dstW; i++) {
+ register int j;
+ register int srcPos = filterPos[i];
+
+ vector signed int val_v = (vector signed int)vzero;
+ vector signed short filter_v0R = vec_ld(i * 2 * filterSize, filter);
+ vector unsigned char permF = vec_lvsl((i * 2 * filterSize), filter);
+
+ vector unsigned char src_v0 = vec_ld(srcPos, src);
+ vector unsigned char permS = vec_lvsl(srcPos, src);
+
+ for (j = 0 ; j < filterSize - 15; j += 16) {
+ vector unsigned char src_v1 = vec_ld(srcPos + j + 16, src);
+ vector unsigned char src_vF = vec_perm(src_v0, src_v1, permS);
+
+ vector signed short src_vA = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
+ vector signed short src_vB = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));
+
+ vector signed short filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
+ vector signed short filter_v2R = vec_ld((i * 2 * filterSize) + (j * 2) + 32, filter);
+ vector signed short filter_v0 = vec_perm(filter_v0R, filter_v1R, permF);
+ vector signed short filter_v1 = vec_perm(filter_v1R, filter_v2R, permF);
+
+ vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v);
+ val_v = vec_msums(src_vB, filter_v1, val_acc);
+
+ filter_v0R = filter_v2R;
+ src_v0 = src_v1;
+ }
+
+ if (j < (filterSize-7)) {
+ // loading src_v0 is useless, it's already done above
+ //vector unsigned char src_v0 = vec_ld(srcPos + j, src);
+ vector unsigned char src_v1;
+ if ((((int)src + srcPos)% 16) > 8) {
+ src_v1 = vec_ld(srcPos + j + 16, src);
+ }
+ vector unsigned char src_vF = vec_perm(src_v0, src_v1, permS);
+
+ vector signed short src_v = // vec_unpackh sign-extends...
+ (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
+ // loading filter_v0R is useless, it's already done above
+ //vector signed short filter_v0R = vec_ld((i * 2 * filterSize) + j, filter);
+ vector signed short filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
+ vector signed short filter_v = vec_perm(filter_v0R, filter_v1R, permF);
+
+ val_v = vec_msums(src_v, filter_v, val_v);
+ }
+
+ vector signed int val_s = vec_sums(val_v, vzero);
+
+ vec_st(val_s, 0, tempo);
+ dst[i] = MIN(MAX(0, tempo[3]>>7), (1<<15)-1);
+ }
+
+ }
+ }
+}
+
+static inline int yv12toyuy2_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+ int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) {
+ uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
+ // yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
+ uint8_t *ysrc = src[0];
+ uint8_t *usrc = src[1];
+ uint8_t *vsrc = src[2];
+ const int width = c->srcW;
+ const int height = srcSliceH;
+ const int lumStride = srcStride[0];
+ const int chromStride = srcStride[1];
+ const int dstStride = dstStride_a[0];
+ const vector unsigned char yperm = vec_lvsl(0, ysrc);
+ const int vertLumPerChroma = 2;
+ register unsigned int y;
+
+ /* this code assume:
+
+ 1) dst is 16 bytes-aligned
+ 2) dstStride is a multiple of 16
+ 3) width is a multiple of 16
+ 4) lum&chrom stride are multiple of 8
+ */
+
+ for(y=0; y<height; y++)
+ {
+ int i;
+ for (i = 0; i < width - 31; i+= 32) {
+ const unsigned int j = i >> 1;
+ vector unsigned char v_yA = vec_ld(i, ysrc);
+ vector unsigned char v_yB = vec_ld(i + 16, ysrc);
+ vector unsigned char v_yC = vec_ld(i + 32, ysrc);
+ vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
+ vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
+ vector unsigned char v_uA = vec_ld(j, usrc);
+ vector unsigned char v_uB = vec_ld(j + 16, usrc);
+ vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
+ vector unsigned char v_vA = vec_ld(j, vsrc);
+ vector unsigned char v_vB = vec_ld(j + 16, vsrc);
+ vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
+ vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
+ vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
+ vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
+ vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
+ vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b);
+ vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b);
+ vec_st(v_yuy2_0, (i << 1), dst);
+ vec_st(v_yuy2_1, (i << 1) + 16, dst);
+ vec_st(v_yuy2_2, (i << 1) + 32, dst);
+ vec_st(v_yuy2_3, (i << 1) + 48, dst);
+ }
+ if (i < width) {
+ const unsigned int j = i >> 1;
+ vector unsigned char v_y1 = vec_ld(i, ysrc);
+ vector unsigned char v_u = vec_ld(j, usrc);
+ vector unsigned char v_v = vec_ld(j, vsrc);
+ vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
+ vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a);
+ vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a);
+ vec_st(v_yuy2_0, (i << 1), dst);
+ vec_st(v_yuy2_1, (i << 1) + 16, dst);
+ }
+ if((y&(vertLumPerChroma-1))==(vertLumPerChroma-1) )
+ {
+ usrc += chromStride;
+ vsrc += chromStride;
+ }
+ ysrc += lumStride;
+ dst += dstStride;
+ }
+
+ return srcSliceH;
+}
+
+static inline int yv12touyvy_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+ int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) {
+ uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY;
+ // yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
+ uint8_t *ysrc = src[0];
+ uint8_t *usrc = src[1];
+ uint8_t *vsrc = src[2];
+ const int width = c->srcW;
+ const int height = srcSliceH;
+ const int lumStride = srcStride[0];
+ const int chromStride = srcStride[1];
+ const int dstStride = dstStride_a[0];
+ const int vertLumPerChroma = 2;
+ const vector unsigned char yperm = vec_lvsl(0, ysrc);
+ register unsigned int y;
+
+ /* this code assume:
+
+ 1) dst is 16 bytes-aligned
+ 2) dstStride is a multiple of 16
+ 3) width is a multiple of 16
+ 4) lum&chrom stride are multiple of 8
+ */
+
+ for(y=0; y<height; y++)
+ {
+ int i;
+ for (i = 0; i < width - 31; i+= 32) {
+ const unsigned int j = i >> 1;
+ vector unsigned char v_yA = vec_ld(i, ysrc);
+ vector unsigned char v_yB = vec_ld(i + 16, ysrc);
+ vector unsigned char v_yC = vec_ld(i + 32, ysrc);
+ vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm);
+ vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm);
+ vector unsigned char v_uA = vec_ld(j, usrc);
+ vector unsigned char v_uB = vec_ld(j + 16, usrc);
+ vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc));
+ vector unsigned char v_vA = vec_ld(j, vsrc);
+ vector unsigned char v_vB = vec_ld(j + 16, vsrc);
+ vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc));
+ vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
+ vector unsigned char v_uv_b = vec_mergel(v_u, v_v);
+ vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
+ vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
+ vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2);
+ vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2);
+ vec_st(v_uyvy_0, (i << 1), dst);
+ vec_st(v_uyvy_1, (i << 1) + 16, dst);
+ vec_st(v_uyvy_2, (i << 1) + 32, dst);
+ vec_st(v_uyvy_3, (i << 1) + 48, dst);
+ }
+ if (i < width) {
+ const unsigned int j = i >> 1;
+ vector unsigned char v_y1 = vec_ld(i, ysrc);
+ vector unsigned char v_u = vec_ld(j, usrc);
+ vector unsigned char v_v = vec_ld(j, vsrc);
+ vector unsigned char v_uv_a = vec_mergeh(v_u, v_v);
+ vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1);
+ vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1);
+ vec_st(v_uyvy_0, (i << 1), dst);
+ vec_st(v_uyvy_1, (i << 1) + 16, dst);
+ }
+ if((y&(vertLumPerChroma-1))==(vertLumPerChroma-1) )
+ {
+ usrc += chromStride;
+ vsrc += chromStride;
+ }
+ ysrc += lumStride;
+ dst += dstStride;
+ }
+ return srcSliceH;
+}
projects / ffmpeg.git / blobdiff