/* * AltiVec acceleration for colorspace conversion * * copyright (C) 2004 Marc Hoffman * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* * 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 code. * * 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 where you specify 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 uses 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 10 clocks 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 issue, 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 #include #include #include #include "config.h" #include "libswscale/rgb2rgb.h" #include "libswscale/swscale.h" #include "libswscale/swscale_internal.h" #include "libavutil/attributes.h" #include "libavutil/cpu.h" #include "yuv2rgb_altivec.h" #if HAVE_ALTIVEC #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 = { 0x00, 0x01, 0x10, 0x02, 0x03, 0x11, 0x04, 0x05, 0x12, 0x06, 0x07, 0x13, 0x08, 0x09, 0x14, 0x0a }, perm_rgb_1 = { 0x0b, 0x15, 0x0c, 0x0d, 0x16, 0x0e, 0x0f, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f }, perm_rgb_2 = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x00, 0x01, 0x18, 0x02, 0x03, 0x19, 0x04, 0x05 }, perm_rgb_3 = { 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_mstbgr24(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_mstrgb24(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 works on Y: 0-255 this version has been * optimized for JPEG decoding. */ #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_s16(x) \ vec_max(vec_min(x, ((vector signed short) { \ 235, 235, 235, 235, 235, 235, 235, 235 })), \ ((vector signed short) { 16, 16, 16, 16, 16, 16, 16, 16 })) #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 }))) 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) vec_splat((vector signed short) { 128 }, 0)); V = vec_sub(V, (vector signed short) vec_splat((vector signed short) { 128 }, 0)); // 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, const 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; \ \ const vector unsigned char *y1ivP, *y2ivP, *uivP, *vivP; \ vector unsigned char align_perm; \ \ vector signed short lCY = c->CY; \ vector signed short lOY = c->OY; \ vector signed short lCRV = c->CRV; \ vector signed short lCBU = c->CBU; \ vector signed short lCGU = c->CGU; \ vector signed short lCGV = c->CGV; \ vector unsigned short lCSHIFT = c->CSHIFT; \ \ const ubyte *y1i = in[0]; \ const ubyte *y2i = in[0] + instrides[0]; \ const ubyte *ui = in[1]; \ const 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]); \ \ /* loop moves y{1, 2}i by w */ \ instrides_scl[0] = instrides[0] * 2 - w; \ /* loop moves ui by w / 2 */ \ instrides_scl[1] = instrides[1] - w / 2; \ /* loop moves vi by w / 2 */ \ instrides_scl[2] = instrides[2] - 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++) { \ y1ivP = (const vector unsigned char *) y1i; \ y2ivP = (const vector unsigned char *) y2i; \ uivP = (const vector unsigned char *) ui; \ vivP = (const vector unsigned char *) vi; \ \ align_perm = vec_lvsl(0, y1i); \ y0 = (vector unsigned char) \ vec_perm(y1ivP[0], y1ivP[1], align_perm); \ \ align_perm = vec_lvsl(0, y2i); \ y1 = (vector unsigned char) \ vec_perm(y2ivP[0], y2ivP[1], align_perm); \ \ 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) \ vec_splat((vector signed char) { 128 }, 0)); \ v = (vector signed char) \ vec_sub(v, \ (vector signed char) \ vec_splat((vector signed char) { 128 }, 0)); \ \ 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)) { 255 }), c, b, a, ptr) #define out_bgra(a, b, c, ptr) \ vec_mstrgb32(__typeof__(a), c, b, a, ((__typeof__(a)) { 255 }), ptr) #define out_rgba(a, b, c, ptr) \ vec_mstrgb32(__typeof__(a), a, b, c, ((__typeof__(a)) { 255 }), ptr) #define out_argb(a, b, c, ptr) \ vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), 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_mstbgr24(a, b, c, ptr) DEFCSP420_CVT(yuv2_abgr, out_abgr) DEFCSP420_CVT(yuv2_bgra, out_bgra) DEFCSP420_CVT(yuv2_rgba, out_rgba) DEFCSP420_CVT(yuv2_argb, 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 = { 0x10, 0x00, 0x10, 0x00, 0x10, 0x04, 0x10, 0x04, 0x10, 0x08, 0x10, 0x08, 0x10, 0x0c, 0x10, 0x0c }, demux_v = { 0x10, 0x02, 0x10, 0x02, 0x10, 0x06, 0x10, 0x06, 0x10, 0x0A, 0x10, 0x0A, 0x10, 0x0E, 0x10, 0x0E }, demux_y = { 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, const 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 R0, G0, B0, R1, G1, B1; vector unsigned char R, G, B; vector unsigned char *out; const 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; } #endif /* HAVE_ALTIVEC */ /* 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. */ av_cold SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c) { #if HAVE_ALTIVEC if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC)) return NULL; /* * and this seems not to matter too much I tried a bunch of * videos with abnormal widths and MPlayer crashes elsewhere. * 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 AV_PIX_FMT_YUV410P: case AV_PIX_FMT_YUV420P: /*case IMGFMT_CLPL: ??? */ case AV_PIX_FMT_GRAY8: case AV_PIX_FMT_NV12: case AV_PIX_FMT_NV21: if ((c->srcH & 0x1) != 0) return NULL; switch (c->dstFormat) { case AV_PIX_FMT_RGB24: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGB24\n"); return altivec_yuv2_rgb24; case AV_PIX_FMT_BGR24: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGR24\n"); return altivec_yuv2_bgr24; case AV_PIX_FMT_ARGB: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ARGB\n"); return altivec_yuv2_argb; case AV_PIX_FMT_ABGR: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ABGR\n"); return altivec_yuv2_abgr; case AV_PIX_FMT_RGBA: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGBA\n"); return altivec_yuv2_rgba; case AV_PIX_FMT_BGRA: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGRA\n"); return altivec_yuv2_bgra; default: return NULL; } break; case AV_PIX_FMT_UYVY422: switch (c->dstFormat) { case AV_PIX_FMT_BGR32: av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space UYVY -> RGB32\n"); return altivec_uyvy_rgb32; default: return NULL; } break; } #endif /* HAVE_ALTIVEC */ return NULL; } av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation) { #if HAVE_ALTIVEC union { DECLARE_ALIGNED(16, signed short, tmp)[8]; vector signed short vec; } buf; if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC)) return; buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9; // cy buf.tmp[1] = -256 * brightness; // oy buf.tmp[2] = (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16); // crv buf.tmp[3] = (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16); // cbu buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgu buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgv c->CSHIFT = (vector unsigned short) vec_splat_u16(2); c->CY = vec_splat((vector signed short) buf.vec, 0); c->OY = vec_splat((vector signed short) buf.vec, 1); c->CRV = vec_splat((vector signed short) buf.vec, 2); c->CBU = vec_splat((vector signed short) buf.vec, 3); c->CGU = vec_splat((vector signed short) buf.vec, 4); c->CGV = vec_splat((vector signed short) buf.vec, 5); return; #endif /* HAVE_ALTIVEC */ } #if HAVE_ALTIVEC static av_always_inline void yuv2packedX_altivec(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t *dest, int dstW, int dstY, enum AVPixelFormat target) { int i, j; 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; vector unsigned char *out, *nout; vector signed short RND = vec_splat_s16(1 << 3); vector unsigned short SCL = vec_splat_u16(4); DECLARE_ALIGNED(16, unsigned int, scratch)[16]; vector signed short *YCoeffs, *CCoeffs; YCoeffs = c->vYCoeffsBank + dstY * lumFilterSize; CCoeffs = c->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, &chrUSrc[j][i / 2]); U = vec_mradds(X, CCoeffs[j], U); X = vec_ld(0, &chrVSrc[j][i / 2]); 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_s16(Y0); Y1 = vec_clip_s16(Y1); U = vec_clip_s16(U); V = vec_clip_s16(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); switch (target) { case AV_PIX_FMT_ABGR: out_abgr(R, G, B, out); break; case AV_PIX_FMT_BGRA: out_bgra(R, G, B, out); break; case AV_PIX_FMT_RGBA: out_rgba(R, G, B, out); break; case AV_PIX_FMT_ARGB: out_argb(R, G, B, out); break; case AV_PIX_FMT_RGB24: out_rgb24(R, G, B, out); break; case AV_PIX_FMT_BGR24: out_bgr24(R, G, B, out); break; default: { /* If this is reached, the caller should have called yuv2packedXinC * instead. */ static int printed_error_message; if (!printed_error_message) { av_log(c, AV_LOG_ERROR, "altivec_yuv2packedX doesn't support %s output\n", sws_format_name(c->dstFormat)); printed_error_message = 1; } return; } } } 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, &chrUSrc[j][i / 2]); U = vec_mradds(X, CCoeffs[j], U); X = vec_ld(0, &chrVSrc[j][i / 2]); 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_s16(Y0); Y1 = vec_clip_s16(Y1); U = vec_clip_s16(U); V = vec_clip_s16(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; switch (target) { case AV_PIX_FMT_ABGR: out_abgr(R, G, B, nout); break; case AV_PIX_FMT_BGRA: out_bgra(R, G, B, nout); break; case AV_PIX_FMT_RGBA: out_rgba(R, G, B, nout); break; case AV_PIX_FMT_ARGB: out_argb(R, G, B, nout); break; case AV_PIX_FMT_RGB24: out_rgb24(R, G, B, nout); break; case AV_PIX_FMT_BGR24: out_bgr24(R, G, B, nout); break; default: /* Unreachable, I think. */ av_log(c, AV_LOG_ERROR, "altivec_yuv2packedX doesn't support %s output\n", sws_format_name(c->dstFormat)); return; } memcpy(&((uint32_t *) dest)[i], scratch, (dstW - i) / 4); } } #define YUV2PACKEDX_WRAPPER(suffix, pixfmt) \ void ff_yuv2 ## suffix ## _X_altivec(SwsContext *c, \ const int16_t *lumFilter, \ const int16_t **lumSrc, \ int lumFilterSize, \ const int16_t *chrFilter, \ const int16_t **chrUSrc, \ const int16_t **chrVSrc, \ int chrFilterSize, \ const int16_t **alpSrc, \ uint8_t *dest, int dstW, int dstY) \ { \ yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize, \ chrFilter, chrUSrc, chrVSrc, \ chrFilterSize, alpSrc, \ dest, dstW, dstY, pixfmt); \ } YUV2PACKEDX_WRAPPER(abgr, AV_PIX_FMT_ABGR); YUV2PACKEDX_WRAPPER(bgra, AV_PIX_FMT_BGRA); YUV2PACKEDX_WRAPPER(argb, AV_PIX_FMT_ARGB); YUV2PACKEDX_WRAPPER(rgba, AV_PIX_FMT_RGBA); YUV2PACKEDX_WRAPPER(rgb24, AV_PIX_FMT_RGB24); YUV2PACKEDX_WRAPPER(bgr24, AV_PIX_FMT_BGR24); #endif /* HAVE_ALTIVEC */