yuv2rgb_altivec.c
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上传日期:2009-03-27
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- /*
- marc.hoffman@analog.com March 8, 2004
- Altivec Acceleration for Color Space Conversion revision 0.2
- convert I420 YV12 to RGB in various formats,
- it rejects images that are not in 420 formats
- it rejects images that don't have widths of multiples of 16
- it rejects images that don't have heights of multiples of 2
- reject defers to C simulation codes.
- lots of optimizations to be done here
- 1. need to fix saturation code, I just couldn't get it to fly with packs and adds.
- so we currently use max min to clip
- 2. the inefficient use of chroma loading needs a bit of brushing up
- 3. analysis of pipeline stalls needs to be done, use shark to identify pipeline stalls
- MODIFIED to calculate coeffs from currently selected color space.
- MODIFIED core to be a macro which you spec the output format.
- ADDED UYVY conversion which is never called due to some thing in SWSCALE.
- CORRECTED algorithim selection to be strict on input formats.
- ADDED runtime detection of altivec.
- ADDED altivec_yuv2packedX vertical scl + RGB converter
- March 27,2004
- PERFORMANCE ANALYSIS
- The C version use 25% of the processor or ~250Mips for D1 video rawvideo used as test
- The ALTIVEC version uses 10% of the processor or ~100Mips for D1 video same sequence
- 720*480*30 ~10MPS
- so we have roughly 10clocks per pixel this is too high something has to be wrong.
- OPTIMIZED clip codes to utilize vec_max and vec_packs removing the need for vec_min.
- OPTIMIZED DST OUTPUT cache/dma controls. we are pretty much
- guaranteed to have the input video frame it was just decompressed so
- it probably resides in L1 caches. However we are creating the
- output video stream this needs to use the DSTST instruction to
- optimize for the cache. We couple this with the fact that we are
- not going to be visiting the input buffer again so we mark it Least
- Recently Used. This shaves 25% of the processor cycles off.
- Now MEMCPY is the largest mips consumer in the system, probably due
- to the inefficient X11 stuff.
- GL libraries seem to be very slow on this machine 1.33Ghz PB running
- Jaguar, this is not the case for my 1Ghz PB. I thought it might be
- a versioning issues, however i have libGL.1.2.dylib for both
- machines. ((We need to figure this out now))
- GL2 libraries work now with patch for RGB32
- NOTE quartz vo driver ARGB32_to_RGB24 consumes 30% of the processor
- Integrated luma prescaling adjustment for saturation/contrast/brightness adjustment.
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <inttypes.h>
- #include <assert.h>
- #include "config.h"
- #include "rgb2rgb.h"
- #include "swscale.h"
- #include "swscale_internal.h"
- #include "mangle.h"
- #include "img_format.h" //FIXME try to reduce dependency of such stuff
- #undef PROFILE_THE_BEAST
- #undef INC_SCALING
- typedef unsigned char ubyte;
- typedef signed char sbyte;
- /* RGB interleaver, 16 planar pels 8-bit samples per channel in
- homogeneous vector registers x0,x1,x2 are interleaved with the
- following technique:
- o0 = vec_mergeh (x0,x1);
- o1 = vec_perm (o0, x2, perm_rgb_0);
- o2 = vec_perm (o0, x2, perm_rgb_1);
- o3 = vec_mergel (x0,x1);
- o4 = vec_perm (o3,o2,perm_rgb_2);
- o5 = vec_perm (o3,o2,perm_rgb_3);
- perm_rgb_0: o0(RG).h v1(B) --> o1*
- 0 1 2 3 4
- rgbr|gbrg|brgb|rgbr
- 0010 0100 1001 0010
- 0102 3145 2673 894A
- perm_rgb_1: o0(RG).h v1(B) --> o2
- 0 1 2 3 4
- gbrg|brgb|bbbb|bbbb
- 0100 1001 1111 1111
- B5CD 6EF7 89AB CDEF
- perm_rgb_2: o3(RG).l o2(rgbB.l) --> o4*
- 0 1 2 3 4
- gbrg|brgb|rgbr|gbrg
- 1111 1111 0010 0100
- 89AB CDEF 0182 3945
- perm_rgb_2: o3(RG).l o2(rgbB.l) ---> o5*
- 0 1 2 3 4
- brgb|rgbr|gbrg|brgb
- 1001 0010 0100 1001
- a67b 89cA BdCD eEFf
- */
- static
- const vector unsigned char
- perm_rgb_0 = (vector unsigned char)(0x00,0x01,0x10,0x02,0x03,0x11,0x04,0x05,
- 0x12,0x06,0x07,0x13,0x08,0x09,0x14,0x0a),
- perm_rgb_1 = (vector unsigned char)(0x0b,0x15,0x0c,0x0d,0x16,0x0e,0x0f,0x17,
- 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f),
- perm_rgb_2 = (vector unsigned char)(0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
- 0x00,0x01,0x18,0x02,0x03,0x19,0x04,0x05),
- perm_rgb_3 = (vector unsigned char)(0x1a,0x06,0x07,0x1b,0x08,0x09,0x1c,0x0a,
- 0x0b,0x1d,0x0c,0x0d,0x1e,0x0e,0x0f,0x1f);
- #define vec_merge3(x2,x1,x0,y0,y1,y2)
- do {
- typeof(x0) o0,o2,o3;
- o0 = vec_mergeh (x0,x1);
- y0 = vec_perm (o0, x2, perm_rgb_0);
- o2 = vec_perm (o0, x2, perm_rgb_1);
- o3 = vec_mergel (x0,x1);
- y1 = vec_perm (o3,o2,perm_rgb_2);
- y2 = vec_perm (o3,o2,perm_rgb_3);
- } while(0)
- #define vec_mstrgb24(x0,x1,x2,ptr)
- do {
- typeof(x0) _0,_1,_2;
- vec_merge3 (x0,x1,x2,_0,_1,_2);
- vec_st (_0, 0, ptr++);
- vec_st (_1, 0, ptr++);
- vec_st (_2, 0, ptr++);
- } while (0);
- #define vec_mstbgr24(x0,x1,x2,ptr)
- do {
- typeof(x0) _0,_1,_2;
- vec_merge3 (x2,x1,x0,_0,_1,_2);
- vec_st (_0, 0, ptr++);
- vec_st (_1, 0, ptr++);
- vec_st (_2, 0, ptr++);
- } while (0);
- /* pack the pixels in rgb0 format
- msb R
- lsb 0
- */
- #define vec_mstrgb32(T,x0,x1,x2,x3,ptr)
- do {
- T _0,_1,_2,_3;
- _0 = vec_mergeh (x0,x1);
- _1 = vec_mergeh (x2,x3);
- _2 = (T)vec_mergeh ((vector unsigned short)_0,(vector unsigned short)_1);
- _3 = (T)vec_mergel ((vector unsigned short)_0,(vector unsigned short)_1);
- vec_st (_2, 0*16, (T *)ptr);
- vec_st (_3, 1*16, (T *)ptr);
- _0 = vec_mergel (x0,x1);
- _1 = vec_mergel (x2,x3);
- _2 = (T)vec_mergeh ((vector unsigned short)_0,(vector unsigned short)_1);
- _3 = (T)vec_mergel ((vector unsigned short)_0,(vector unsigned short)_1);
- vec_st (_2, 2*16, (T *)ptr);
- vec_st (_3, 3*16, (T *)ptr);
- ptr += 4;
- } while (0);
- /*
- | 1 0 1.4021 | | Y |
- | 1 -0.3441 -0.7142 |x| Cb|
- | 1 1.7718 0 | | Cr|
- Y: [-128 127]
- Cb/Cr : [-128 127]
- typical yuv conversion work on Y: 0-255 this version has been optimized for jpeg decode.
- */
- #define vec_unh(x)
- (vector signed short)
- vec_perm(x,(typeof(x))(0),
- (vector unsigned char)(0x10,0x00,0x10,0x01,0x10,0x02,0x10,0x03,
- 0x10,0x04,0x10,0x05,0x10,0x06,0x10,0x07))
- #define vec_unl(x)
- (vector signed short)
- vec_perm(x,(typeof(x))(0),
- (vector unsigned char)(0x10,0x08,0x10,0x09,0x10,0x0A,0x10,0x0B,
- 0x10,0x0C,0x10,0x0D,0x10,0x0E,0x10,0x0F))
- #define vec_clip(x)
- vec_max (vec_min (x, (typeof(x))(255)), (typeof(x))(0))
- #define vec_packclp_a(x,y)
- (vector unsigned char)vec_pack (vec_clip (x), vec_clip (y))
- #define vec_packclp(x,y)
- (vector unsigned char)vec_packs
- ((vector unsigned short)vec_max (x,(vector signed short) (0)),
- (vector unsigned short)vec_max (y,(vector signed short) (0)))
- //#define out_pixels(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))(0)),a,a,a,ptr)
- static inline void cvtyuvtoRGB (SwsContext *c,
- vector signed short Y, vector signed short U, vector signed short V,
- vector signed short *R, vector signed short *G, vector signed short *B)
- {
- vector signed short vx,ux,uvx;
- Y = vec_mradds (Y, c->CY, c->OY);
- U = vec_sub (U,(vector signed short)(128));
- V = vec_sub (V,(vector signed short)(128));
- // ux = (CBU*(u<<c->CSHIFT)+0x4000)>>15;
- ux = vec_sl (U, c->CSHIFT);
- *B = vec_mradds (ux, c->CBU, Y);
- // vx = (CRV*(v<<c->CSHIFT)+0x4000)>>15;
- vx = vec_sl (V, c->CSHIFT);
- *R = vec_mradds (vx, c->CRV, Y);
- // uvx = ((CGU*u) + (CGV*v))>>15;
- uvx = vec_mradds (U, c->CGU, Y);
- *G = vec_mradds (V, c->CGV, uvx);
- }
- /*
- ------------------------------------------------------------------------------
- CS converters
- ------------------------------------------------------------------------------
- */
- #define DEFCSP420_CVT(name,out_pixels)
- static int altivec_##name (SwsContext *c,
- unsigned char **in, int *instrides,
- int srcSliceY, int srcSliceH,
- unsigned char **oplanes, int *outstrides)
- {
- int w = c->srcW;
- int h = srcSliceH;
- int i,j;
- int instrides_scl[3];
- vector unsigned char y0,y1;
-
- vector signed char u,v;
-
- vector signed short Y0,Y1,Y2,Y3;
- vector signed short U,V;
- vector signed short vx,ux,uvx;
- vector signed short vx0,ux0,uvx0;
- vector signed short vx1,ux1,uvx1;
- vector signed short R0,G0,B0;
- vector signed short R1,G1,B1;
- vector unsigned char R,G,B;
-
- vector unsigned char *uivP, *vivP;
- vector unsigned char align_perm;
-
- vector signed short
- lCY = c->CY,
- lOY = c->OY,
- lCRV = c->CRV,
- lCBU = c->CBU,
- lCGU = c->CGU,
- lCGV = c->CGV;
-
- vector unsigned short lCSHIFT = c->CSHIFT;
-
- ubyte *y1i = in[0];
- ubyte *y2i = in[0]+w;
- ubyte *ui = in[1];
- ubyte *vi = in[2];
-
- vector unsigned char *oute
- = (vector unsigned char *)
- (oplanes[0]+srcSliceY*outstrides[0]);
- vector unsigned char *outo
- = (vector unsigned char *)
- (oplanes[0]+srcSliceY*outstrides[0]+outstrides[0]);
-
-
- instrides_scl[0] = instrides[0];
- instrides_scl[1] = instrides[1]-w/2; /* the loop moves ui by w/2 */
- instrides_scl[2] = instrides[2]-w/2; /* the loop moves vi by w/2 */
-
-
- for (i=0;i<h/2;i++) {
- vec_dstst (outo, (0x02000002|(((w*3+32)/32)<<16)), 0);
- vec_dstst (oute, (0x02000002|(((w*3+32)/32)<<16)), 1);
-
- for (j=0;j<w/16;j++) {
-
- y0 = vec_ldl (0,y1i);
- y1 = vec_ldl (0,y2i);
- uivP = (vector unsigned char *)ui;
- vivP = (vector unsigned char *)vi;
-
- align_perm = vec_lvsl (0, ui);
- u = (vector signed char)vec_perm (uivP[0], uivP[1], align_perm);
-
- align_perm = vec_lvsl (0, vi);
- v = (vector signed char)vec_perm (vivP[0], vivP[1], align_perm);
-
- u = (vector signed char)vec_sub (u, (vector signed char)(128));
- v = (vector signed char)vec_sub (v, (vector signed char)(128));
- U = vec_unpackh (u);
- V = vec_unpackh (v);
-
-
- Y0 = vec_unh (y0);
- Y1 = vec_unl (y0);
- Y2 = vec_unh (y1);
- Y3 = vec_unl (y1);
-
- Y0 = vec_mradds (Y0, lCY, lOY);
- Y1 = vec_mradds (Y1, lCY, lOY);
- Y2 = vec_mradds (Y2, lCY, lOY);
- Y3 = vec_mradds (Y3, lCY, lOY);
-
- /* ux = (CBU*(u<<CSHIFT)+0x4000)>>15 */
- ux = vec_sl (U, lCSHIFT);
- ux = vec_mradds (ux, lCBU, (vector signed short)(0));
- ux0 = vec_mergeh (ux,ux);
- ux1 = vec_mergel (ux,ux);
-
- /* vx = (CRV*(v<<CSHIFT)+0x4000)>>15; */
- vx = vec_sl (V, lCSHIFT);
- vx = vec_mradds (vx, lCRV, (vector signed short)(0));
- vx0 = vec_mergeh (vx,vx);
- vx1 = vec_mergel (vx,vx);
-
- /* uvx = ((CGU*u) + (CGV*v))>>15 */
- uvx = vec_mradds (U, lCGU, (vector signed short)(0));
- uvx = vec_mradds (V, lCGV, uvx);
- uvx0 = vec_mergeh (uvx,uvx);
- uvx1 = vec_mergel (uvx,uvx);
-
- R0 = vec_add (Y0,vx0);
- G0 = vec_add (Y0,uvx0);
- B0 = vec_add (Y0,ux0);
- R1 = vec_add (Y1,vx1);
- G1 = vec_add (Y1,uvx1);
- B1 = vec_add (Y1,ux1);
-
- R = vec_packclp (R0,R1);
- G = vec_packclp (G0,G1);
- B = vec_packclp (B0,B1);
-
- out_pixels(R,G,B,oute);
-
- R0 = vec_add (Y2,vx0);
- G0 = vec_add (Y2,uvx0);
- B0 = vec_add (Y2,ux0);
- R1 = vec_add (Y3,vx1);
- G1 = vec_add (Y3,uvx1);
- B1 = vec_add (Y3,ux1);
- R = vec_packclp (R0,R1);
- G = vec_packclp (G0,G1);
- B = vec_packclp (B0,B1);
-
-
- out_pixels(R,G,B,outo);
-
- y1i += 16;
- y2i += 16;
- ui += 8;
- vi += 8;
-
- }
-
- outo += (outstrides[0])>>4;
- oute += (outstrides[0])>>4;
-
- ui += instrides_scl[1];
- vi += instrides_scl[2];
- y1i += instrides_scl[0];
- y2i += instrides_scl[0];
- }
- return srcSliceH;
- }
- #define out_abgr(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))(0)),c,b,a,ptr)
- #define out_bgra(a,b,c,ptr) vec_mstrgb32(typeof(a),c,b,a,((typeof (a))(0)),ptr)
- #define out_rgba(a,b,c,ptr) vec_mstrgb32(typeof(a),a,b,c,((typeof (a))(0)),ptr)
- #define out_argb(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))(0)),a,b,c,ptr)
- #define out_rgb24(a,b,c,ptr) vec_mstrgb24(a,b,c,ptr)
- #define out_bgr24(a,b,c,ptr) vec_mstrgb24(c,b,a,ptr)
- DEFCSP420_CVT (yuv2_abgr32, out_abgr)
- DEFCSP420_CVT (yuv2_bgra32, out_argb)
- DEFCSP420_CVT (yuv2_rgba32, out_rgba)
- DEFCSP420_CVT (yuv2_argb32, out_argb)
- DEFCSP420_CVT (yuv2_rgb24, out_rgb24)
- DEFCSP420_CVT (yuv2_bgr24, out_bgr24)
- // uyvy|uyvy|uyvy|uyvy
- // 0123 4567 89ab cdef
- static
- const vector unsigned char
- demux_u = (vector unsigned char)(0x10,0x00,0x10,0x00,
- 0x10,0x04,0x10,0x04,
- 0x10,0x08,0x10,0x08,
- 0x10,0x0c,0x10,0x0c),
- demux_v = (vector unsigned char)(0x10,0x02,0x10,0x02,
- 0x10,0x06,0x10,0x06,
- 0x10,0x0A,0x10,0x0A,
- 0x10,0x0E,0x10,0x0E),
- demux_y = (vector unsigned char)(0x10,0x01,0x10,0x03,
- 0x10,0x05,0x10,0x07,
- 0x10,0x09,0x10,0x0B,
- 0x10,0x0D,0x10,0x0F);
- /*
- this is so I can play live CCIR raw video
- */
- static int altivec_uyvy_rgb32 (SwsContext *c,
- unsigned char **in, int *instrides,
- int srcSliceY, int srcSliceH,
- unsigned char **oplanes, int *outstrides)
- {
- int w = c->srcW;
- int h = srcSliceH;
- int i,j;
- vector unsigned char uyvy;
- vector signed short Y,U,V;
- vector signed short vx,ux,uvx;
- vector signed short R0,G0,B0,R1,G1,B1;
- vector unsigned char R,G,B;
- vector unsigned char *out;
- ubyte *img;
- img = in[0];
- out = (vector unsigned char *)(oplanes[0]+srcSliceY*outstrides[0]);
- for (i=0;i<h;i++) {
- for (j=0;j<w/16;j++) {
- uyvy = vec_ld (0, img);
- U = (vector signed short)
- vec_perm (uyvy, (vector unsigned char)(0), demux_u);
- V = (vector signed short)
- vec_perm (uyvy, (vector unsigned char)(0), demux_v);
- Y = (vector signed short)
- vec_perm (uyvy, (vector unsigned char)(0), demux_y);
- cvtyuvtoRGB (c, Y,U,V,&R0,&G0,&B0);
- uyvy = vec_ld (16, img);
- U = (vector signed short)
- vec_perm (uyvy, (vector unsigned char)(0), demux_u);
- V = (vector signed short)
- vec_perm (uyvy, (vector unsigned char)(0), demux_v);
- Y = (vector signed short)
- vec_perm (uyvy, (vector unsigned char)(0), demux_y);
- cvtyuvtoRGB (c, Y,U,V,&R1,&G1,&B1);
- R = vec_packclp (R0,R1);
- G = vec_packclp (G0,G1);
- B = vec_packclp (B0,B1);
- // vec_mstbgr24 (R,G,B, out);
- out_rgba (R,G,B,out);
- img += 32;
- }
- }
- return srcSliceH;
- }
- /* Ok currently the acceleration routine only supports
- inputs of widths a multiple of 16
- and heights a multiple 2
- So we just fall back to the C codes for this.
- */
- SwsFunc yuv2rgb_init_altivec (SwsContext *c)
- {
- if (!(c->flags & SWS_CPU_CAPS_ALTIVEC))
- return NULL;
- /*
- and this seems not to matter too much I tried a bunch of
- videos with abnormal widths and mplayer crashes else where.
- mplayer -vo x11 -rawvideo on:w=350:h=240 raw-350x240.eyuv
- boom with X11 bad match.
-
- */
- if ((c->srcW & 0xf) != 0) return NULL;
- switch (c->srcFormat) {
- case IMGFMT_YVU9:
- case IMGFMT_IF09:
- case IMGFMT_YV12:
- case IMGFMT_I420:
- case IMGFMT_IYUV:
- case IMGFMT_CLPL:
- case IMGFMT_Y800:
- case IMGFMT_Y8:
- case IMGFMT_NV12:
- case IMGFMT_NV21:
- if ((c->srcH & 0x1) != 0)
- return NULL;
- switch(c->dstFormat){
- case IMGFMT_RGB24:
- MSG_WARN("ALTIVEC: Color Space RGB24n");
- return altivec_yuv2_rgb24;
- case IMGFMT_BGR24:
- MSG_WARN("ALTIVEC: Color Space BGR24n");
- return altivec_yuv2_bgr24;
- case IMGFMT_RGB32:
- MSG_WARN("ALTIVEC: Color Space ARGB32n");
- return altivec_yuv2_argb32;
- case IMGFMT_BGR32:
- MSG_WARN("ALTIVEC: Color Space BGRA32n");
- // return profile_altivec_bgra32;
- return altivec_yuv2_bgra32;
- default: return NULL;
- }
- break;
- case IMGFMT_UYVY:
- switch(c->dstFormat){
- case IMGFMT_RGB32:
- MSG_WARN("ALTIVEC: Color Space UYVY -> RGB32n");
- return altivec_uyvy_rgb32;
- default: return NULL;
- }
- break;
- }
- return NULL;
- }
- void yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4])
- {
- vector signed short CY, CRV, CBU, CGU, CGV, OY, Y0;
- int64_t crv __attribute__ ((aligned(16))) = inv_table[0];
- int64_t cbu __attribute__ ((aligned(16))) = inv_table[1];
- int64_t cgu __attribute__ ((aligned(16))) = inv_table[2];
- int64_t cgv __attribute__ ((aligned(16))) = inv_table[3];
- int64_t cy = (1<<16)-1;
- int64_t oy = 0;
- short tmp __attribute__ ((aligned(16)));
- if ((c->flags & SWS_CPU_CAPS_ALTIVEC) == 0)
- return;
- cy = (cy *c->contrast )>>17;
- crv= (crv*c->contrast * c->saturation)>>32;
- cbu= (cbu*c->contrast * c->saturation)>>32;
- cgu= (cgu*c->contrast * c->saturation)>>32;
- cgv= (cgv*c->contrast * c->saturation)>>32;
- oy -= 256*c->brightness;
- tmp = cy;
- CY = vec_lde (0, &tmp);
- CY = vec_splat (CY, 0);
- tmp = oy;
- OY = vec_lde (0, &tmp);
- OY = vec_splat (OY, 0);
- tmp = crv>>3;
- CRV = vec_lde (0, &tmp);
- CRV = vec_splat (CRV, 0);
- tmp = cbu>>3;
- CBU = vec_lde (0, &tmp);
- CBU = vec_splat (CBU, 0);
- tmp = -(cgu>>1);
- CGU = vec_lde (0, &tmp);
- CGU = vec_splat (CGU, 0);
- tmp = -(cgv>>1);
- CGV = vec_lde (0, &tmp);
- CGV = vec_splat (CGV, 0);
- c->CSHIFT = (vector unsigned short)(2);
- c->CY = CY;
- c->OY = OY;
- c->CRV = CRV;
- c->CBU = CBU;
- c->CGU = CGU;
- c->CGV = CGV;
- #if 0
- printf ("cy: %hvxn", CY);
- printf ("oy: %hvxn", OY);
- printf ("crv: %hvxn", CRV);
- printf ("cbu: %hvxn", CBU);
- printf ("cgv: %hvxn", CGV);
- printf ("cgu: %hvxn", CGU);
- #endif
- return;
- }
- void
- altivec_yuv2packedX (SwsContext *c,
- int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
- int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
- uint8_t *dest, int dstW, int dstY)
- {
- int i,j;
- short tmp __attribute__((aligned (16)));
- short *p;
- short *f;
- vector signed short X,X0,X1,Y0,U0,V0,Y1,U1,V1,U,V;
- vector signed short R0,G0,B0,R1,G1,B1;
- vector unsigned char R,G,B,pels[3];
- vector unsigned char *out,*nout;
- vector signed short RND = (vector signed short)(1<<3);
- vector unsigned short SCL = (vector unsigned short)(4);
- unsigned long scratch[16] __attribute__ ((aligned (16)));
- vector signed short *vYCoeffsBank, *vCCoeffsBank;
- vector signed short *YCoeffs, *CCoeffs;
- vYCoeffsBank = malloc (sizeof (vector signed short)*lumFilterSize*dstW);
- vCCoeffsBank = malloc (sizeof (vector signed short)*chrFilterSize*dstW);
- for (i=0;i<lumFilterSize*dstW;i++) {
- tmp = c->vLumFilter[i];
- p = &vYCoeffsBank[i];
- for (j=0;j<8;j++)
- p[j] = tmp;
- }
- for (i=0;i<chrFilterSize*dstW;i++) {
- tmp = c->vChrFilter[i];
- p = &vCCoeffsBank[i];
- for (j=0;j<8;j++)
- p[j] = tmp;
- }
- YCoeffs = vYCoeffsBank+dstY*lumFilterSize;
- CCoeffs = vCCoeffsBank+dstY*chrFilterSize;
- out = (vector unsigned char *)dest;
- for(i=0; i<dstW; i+=16){
- Y0 = RND;
- Y1 = RND;
- /* extract 16 coeffs from lumSrc */
- for(j=0; j<lumFilterSize; j++) {
- X0 = vec_ld (0, &lumSrc[j][i]);
- X1 = vec_ld (16, &lumSrc[j][i]);
- Y0 = vec_mradds (X0, YCoeffs[j], Y0);
- Y1 = vec_mradds (X1, YCoeffs[j], Y1);
- }
- U = RND;
- V = RND;
- /* extract 8 coeffs from U,V */
- for(j=0; j<chrFilterSize; j++) {
- X = vec_ld (0, &chrSrc[j][i/2]);
- U = vec_mradds (X, CCoeffs[j], U);
- X = vec_ld (0, &chrSrc[j][i/2+2048]);
- V = vec_mradds (X, CCoeffs[j], V);
- }
- /* scale and clip signals */
- Y0 = vec_sra (Y0, SCL);
- Y1 = vec_sra (Y1, SCL);
- U = vec_sra (U, SCL);
- V = vec_sra (V, SCL);
- Y0 = vec_clip (Y0);
- Y1 = vec_clip (Y1);
- U = vec_clip (U);
- V = vec_clip (V);
- /* now we have
- Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
- U= u0 u1 u2 u3 u4 u5 u6 u7 V= v0 v1 v2 v3 v4 v5 v6 v7
- Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
- U0= u0 u0 u1 u1 u2 u2 u3 u3 U1= u4 u4 u5 u5 u6 u6 u7 u7
- V0= v0 v0 v1 v1 v2 v2 v3 v3 V1= v4 v4 v5 v5 v6 v6 v7 v7
- */
- U0 = vec_mergeh (U,U);
- V0 = vec_mergeh (V,V);
- U1 = vec_mergel (U,U);
- V1 = vec_mergel (V,V);
- cvtyuvtoRGB (c, Y0,U0,V0,&R0,&G0,&B0);
- cvtyuvtoRGB (c, Y1,U1,V1,&R1,&G1,&B1);
- R = vec_packclp (R0,R1);
- G = vec_packclp (G0,G1);
- B = vec_packclp (B0,B1);
- out_rgba (R,G,B,out);
- }
- if (i < dstW) {
- i -= 16;
- Y0 = RND;
- Y1 = RND;
- /* extract 16 coeffs from lumSrc */
- for(j=0; j<lumFilterSize; j++) {
- X0 = vec_ld (0, &lumSrc[j][i]);
- X1 = vec_ld (16, &lumSrc[j][i]);
- Y0 = vec_mradds (X0, YCoeffs[j], Y0);
- Y1 = vec_mradds (X1, YCoeffs[j], Y1);
- }
- U = RND;
- V = RND;
- /* extract 8 coeffs from U,V */
- for(j=0; j<chrFilterSize; j++) {
- X = vec_ld (0, &chrSrc[j][i/2]);
- U = vec_mradds (X, CCoeffs[j], U);
- X = vec_ld (0, &chrSrc[j][i/2+2048]);
- V = vec_mradds (X, CCoeffs[j], V);
- }
- /* scale and clip signals */
- Y0 = vec_sra (Y0, SCL);
- Y1 = vec_sra (Y1, SCL);
- U = vec_sra (U, SCL);
- V = vec_sra (V, SCL);
- Y0 = vec_clip (Y0);
- Y1 = vec_clip (Y1);
- U = vec_clip (U);
- V = vec_clip (V);
- /* now we have
- Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
- U= u0 u1 u2 u3 u4 u5 u6 u7 V= v0 v1 v2 v3 v4 v5 v6 v7
- Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
- U0= u0 u0 u1 u1 u2 u2 u3 u3 U1= u4 u4 u5 u5 u6 u6 u7 u7
- V0= v0 v0 v1 v1 v2 v2 v3 v3 V1= v4 v4 v5 v5 v6 v6 v7 v7
- */
- U0 = vec_mergeh (U,U);
- V0 = vec_mergeh (V,V);
- U1 = vec_mergel (U,U);
- V1 = vec_mergel (V,V);
- cvtyuvtoRGB (c, Y0,U0,V0,&R0,&G0,&B0);
- cvtyuvtoRGB (c, Y1,U1,V1,&R1,&G1,&B1);
- R = vec_packclp (R0,R1);
- G = vec_packclp (G0,G1);
- B = vec_packclp (B0,B1);
- nout = (vector unsigned char *)scratch;
- out_rgba (R,G,B,nout);
- memcpy (&((uint32_t*)dest)[i], scratch, (dstW-i)/4);
- }
- if (vYCoeffsBank) free (vYCoeffsBank);
- if (vCCoeffsBank) free (vCCoeffsBank);
- }