AltiVec SIMD implementation of RGB-to-YCC color conversion
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1469 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
@@ -73,6 +73,7 @@ endif
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if SIMD_POWERPC
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libsimd_la_SOURCES = jsimd_powerpc.c \
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jccolor-altivec.c \
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jfdctfst-altivec.c jfdctint-altivec.c \
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jidctfst-altivec.c jidctint-altivec.c
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libsimd_la_CFLAGS = -maltivec
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250
simd/jccolext-altivec.c
Normal file
250
simd/jccolext-altivec.c
Normal file
@@ -0,0 +1,250 @@
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/*
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* AltiVec optimizations for libjpeg-turbo
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*
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* Copyright (C) 2014, D. R. Commander.
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* Copyright (C) 2014, Jay Foad.
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* All rights reserved.
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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/* This file is included by jccolor-altivec.c */
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void jsimd_rgb_ycc_convert_altivec (JDIMENSION img_width, JSAMPARRAY input_buf,
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JSAMPIMAGE output_buf,
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JDIMENSION output_row, int num_rows)
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{
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JSAMPROW inptr;
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JSAMPROW outptr0, outptr1, outptr2;
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int pitch;
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__vector unsigned char rgb0, rgb1 = {0}, rgb2 = {0}, rgb3 = {0}, rgbg0,
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rgbg1, rgbg2, rgbg3, y, cb, cr;
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#if RGB_PIXELSIZE == 4
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__vector unsigned char rgb4;
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#endif
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__vector short rg0, rg1, rg2, rg3, bg0, bg1, bg2, bg3;
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__vector unsigned short y01, y23, cr01, cr23, cb01, cb23;
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__vector int y0, y1, y2, y3, cr0, cr1, cr2, cr3, cb0, cb1, cb2, cb3;
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/* Constants */
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__vector short pw_f0299_f0337 = { __4X2(F_0_299, F_0_337) },
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pw_f0114_f0250 = { __4X2(F_0_114, F_0_250) },
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pw_mf016_mf033 = { __4X2(-F_0_168, -F_0_331) },
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pw_mf008_mf041 = { __4X2(-F_0_081, -F_0_418) };
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__vector unsigned short pw_f050_f000 = { __4X2(F_0_500, 0) };
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__vector int pd_onehalf = { __4X(ONE_HALF) },
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pd_onehalfm1_cj = { __4X(ONE_HALF - 1 + (CENTERJSAMPLE << SCALEBITS)) };
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__vector unsigned char zero = { __16X(0) },
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shift_pack_index =
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{ 0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29};
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while (--num_rows >= 0) {
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inptr = *input_buf++;
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outptr0 = output_buf[0][output_row];
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outptr1 = output_buf[1][output_row];
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outptr2 = output_buf[2][output_row];
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output_row++;
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for (pitch = img_width * RGB_PIXELSIZE; pitch > 0;
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pitch -= RGB_PIXELSIZE * 16, inptr += RGB_PIXELSIZE * 16,
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outptr0 += 16, outptr1 += 16, outptr2 += 16) {
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#if RGB_PIXELSIZE == 3
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/* Load 16 pixels == 48 bytes */
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if ((size_t)inptr & 15) {
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__vector unsigned char unaligned_shift_index;
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rgb0 = vec_ld(0, inptr);
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if (pitch > 16)
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rgb1 = vec_ld(16, inptr);
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else
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rgb1 = vec_ld(-1, inptr + pitch);
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if (pitch > 32)
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rgb2 = vec_ld(32, inptr);
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else
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rgb2 = vec_ld(-1, inptr + pitch);
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if (pitch > 48)
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rgb3 = vec_ld(48, inptr);
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else
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rgb3 = vec_ld(-1, inptr + pitch);
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unaligned_shift_index = vec_lvsl(0, inptr);
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rgb0 = vec_perm(rgb0, rgb1, unaligned_shift_index);
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rgb1 = vec_perm(rgb1, rgb2, unaligned_shift_index);
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rgb2 = vec_perm(rgb2, rgb3, unaligned_shift_index);
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} else {
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rgb0 = vec_ld(0, inptr);
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if (pitch > 16)
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rgb1 = vec_ld(16, inptr);
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if (pitch > 32)
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rgb2 = vec_ld(32, inptr);
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}
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/* rgb0 = R0 G0 B0 R1 G1 B1 R2 G2 B2 R3 G3 B3 R4 G4 B4 R5
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* rgb1 = G5 B5 R6 G6 B6 R7 G7 B7 R8 G8 B8 R9 G9 B9 Ra Ga
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* rgb2 = Ba Rb Gb Bb Rc Gc Bc Rd Gd Bd Re Ge Be Rf Gf Bf
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*
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* rgbg0 = R0 G0 R1 G1 R2 G2 R3 G3 B0 G0 B1 G1 B2 G2 B3 G3
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* rgbg1 = R4 G4 R5 G5 R6 G6 R7 G7 B4 G4 B5 G5 B6 G6 B7 G7
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* rgbg2 = R8 G8 R9 G9 Ra Ga Rb Gb B8 G8 B9 G9 Ba Ga Bb Gb
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* rgbg3 = Rc Gc Rd Gd Re Ge Rf Gf Bc Gc Bd Gd Be Ge Bf Gf
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*/
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rgbg0 = vec_perm(rgb0, rgb0, (__vector unsigned char)RGBG_INDEX0);
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rgbg1 = vec_perm(rgb0, rgb1, (__vector unsigned char)RGBG_INDEX1);
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rgbg2 = vec_perm(rgb1, rgb2, (__vector unsigned char)RGBG_INDEX2);
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rgbg3 = vec_perm(rgb2, rgb2, (__vector unsigned char)RGBG_INDEX3);
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#else
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/* Load 16 pixels == 64 bytes */
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if ((size_t)inptr & 15) {
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__vector unsigned char unaligned_shift_index;
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rgb0 = vec_ld(0, inptr);
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if (pitch > 16)
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rgb1 = vec_ld(16, inptr);
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else
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rgb1 = vec_ld(-1, inptr + pitch);
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if (pitch > 32)
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rgb2 = vec_ld(32, inptr);
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else
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rgb2 = vec_ld(-1, inptr + pitch);
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if (pitch > 48)
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rgb3 = vec_ld(48, inptr);
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else
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rgb3 = vec_ld(-1, inptr + pitch);
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if (pitch > 64)
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rgb4 = vec_ld(64, inptr);
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else
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rgb4 = vec_ld(-1, inptr + pitch);
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unaligned_shift_index = vec_lvsl(0, inptr);
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rgb0 = vec_perm(rgb0, rgb1, unaligned_shift_index);
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rgb1 = vec_perm(rgb1, rgb2, unaligned_shift_index);
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rgb2 = vec_perm(rgb2, rgb3, unaligned_shift_index);
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rgb3 = vec_perm(rgb3, rgb4, unaligned_shift_index);
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} else {
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rgb0 = vec_ld(0, inptr);
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if (pitch > 16)
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rgb1 = vec_ld(16, inptr);
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if (pitch > 32)
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rgb2 = vec_ld(32, inptr);
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if (pitch > 48)
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rgb3 = vec_ld(48, inptr);
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}
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/* rgb0 = R0 G0 B0 X0 R1 G1 B1 X1 R2 G2 B2 X2 R3 G3 B3 X3
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* rgb0 = R4 G4 B4 X4 R5 G5 B5 X5 R6 G6 B6 X6 R7 G7 B7 X7
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* rgb0 = R8 G8 B8 X8 R9 G9 B9 X9 Ra Ga Ba Xa Rb Gb Bb Xb
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* rgb0 = Rc Gc Bc Xc Rd Gd Bd Xd Re Ge Be Xe Rf Gf Bf Xf
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*
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* rgbg0 = R0 G0 R1 G1 R2 G2 R3 G3 B0 G0 B1 G1 B2 G2 B3 G3
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* rgbg1 = R4 G4 R5 G5 R6 G6 R7 G7 B4 G4 B5 G5 B6 G6 B7 G7
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* rgbg2 = R8 G8 R9 G9 Ra Ga Rb Gb B8 G8 B9 G9 Ba Ga Bb Gb
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* rgbg3 = Rc Gc Rd Gd Re Ge Rf Gf Bc Gc Bd Gd Be Ge Bf Gf
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*/
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rgbg0 = vec_perm(rgb0, rgb0, (__vector unsigned char)RGBG_INDEX);
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rgbg1 = vec_perm(rgb1, rgb1, (__vector unsigned char)RGBG_INDEX);
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rgbg2 = vec_perm(rgb2, rgb2, (__vector unsigned char)RGBG_INDEX);
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rgbg3 = vec_perm(rgb3, rgb3, (__vector unsigned char)RGBG_INDEX);
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#endif
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/* rg0 = R0 G0 R1 G1 R2 G2 R3 G3
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* bg0 = B0 G0 B1 G1 B2 G2 B3 G3
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* ...
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*
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* NOTE: We have to use vec_merge*() here because vec_unpack*() doesn't
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* support unsigned vectors.
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*/
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rg0 = (__vector signed short)vec_mergeh(zero, rgbg0);
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bg0 = (__vector signed short)vec_mergel(zero, rgbg0);
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rg1 = (__vector signed short)vec_mergeh(zero, rgbg1);
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bg1 = (__vector signed short)vec_mergel(zero, rgbg1);
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rg2 = (__vector signed short)vec_mergeh(zero, rgbg2);
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bg2 = (__vector signed short)vec_mergel(zero, rgbg2);
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rg3 = (__vector signed short)vec_mergeh(zero, rgbg3);
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bg3 = (__vector signed short)vec_mergel(zero, rgbg3);
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/* (Original)
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* Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
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* Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
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* Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
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*
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* (This implementation)
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* Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G
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* Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
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* Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
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*/
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/* Calculate Y values */
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y0 = vec_msums(rg0, pw_f0299_f0337, pd_onehalf);
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y1 = vec_msums(rg1, pw_f0299_f0337, pd_onehalf);
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y2 = vec_msums(rg2, pw_f0299_f0337, pd_onehalf);
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y3 = vec_msums(rg3, pw_f0299_f0337, pd_onehalf);
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y0 = vec_msums(bg0, pw_f0114_f0250, y0);
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y1 = vec_msums(bg1, pw_f0114_f0250, y1);
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y2 = vec_msums(bg2, pw_f0114_f0250, y2);
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y3 = vec_msums(bg3, pw_f0114_f0250, y3);
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/* Clever way to avoid 4 shifts + 2 packs. This packs the high word from
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* each dword into a new 16-bit vector, which is the equivalent of
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* descaling the 32-bit results (right-shifting by 16 bits) and then
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* packing them.
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*/
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y01 = vec_perm((__vector unsigned short)y0, (__vector unsigned short)y1,
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shift_pack_index);
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y23 = vec_perm((__vector unsigned short)y2, (__vector unsigned short)y3,
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shift_pack_index);
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y = vec_pack(y01, y23);
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vec_st(y, 0, outptr0);
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/* Calculate Cb values */
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cb0 = vec_msums(rg0, pw_mf016_mf033, pd_onehalfm1_cj);
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cb1 = vec_msums(rg1, pw_mf016_mf033, pd_onehalfm1_cj);
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cb2 = vec_msums(rg2, pw_mf016_mf033, pd_onehalfm1_cj);
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cb3 = vec_msums(rg3, pw_mf016_mf033, pd_onehalfm1_cj);
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cb0 = (__vector int)vec_msum((__vector unsigned short)bg0, pw_f050_f000,
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(__vector unsigned int)cb0);
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cb1 = (__vector int)vec_msum((__vector unsigned short)bg1, pw_f050_f000,
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(__vector unsigned int)cb1);
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cb2 = (__vector int)vec_msum((__vector unsigned short)bg2, pw_f050_f000,
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(__vector unsigned int)cb2);
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cb3 = (__vector int)vec_msum((__vector unsigned short)bg3, pw_f050_f000,
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(__vector unsigned int)cb3);
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cb01 = vec_perm((__vector unsigned short)cb0,
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(__vector unsigned short)cb1, shift_pack_index);
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cb23 = vec_perm((__vector unsigned short)cb2,
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(__vector unsigned short)cb3, shift_pack_index);
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cb = vec_pack(cb01, cb23);
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vec_st(cb, 0, outptr1);
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/* Calculate Cr values */
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cr0 = vec_msums(bg0, pw_mf008_mf041, pd_onehalfm1_cj);
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cr1 = vec_msums(bg1, pw_mf008_mf041, pd_onehalfm1_cj);
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cr2 = vec_msums(bg2, pw_mf008_mf041, pd_onehalfm1_cj);
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cr3 = vec_msums(bg3, pw_mf008_mf041, pd_onehalfm1_cj);
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cr0 = (__vector int)vec_msum((__vector unsigned short)rg0, pw_f050_f000,
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(__vector unsigned int)cr0);
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cr1 = (__vector int)vec_msum((__vector unsigned short)rg1, pw_f050_f000,
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(__vector unsigned int)cr1);
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cr2 = (__vector int)vec_msum((__vector unsigned short)rg2, pw_f050_f000,
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(__vector unsigned int)cr2);
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cr3 = (__vector int)vec_msum((__vector unsigned short)rg3, pw_f050_f000,
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(__vector unsigned int)cr3);
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cr01 = vec_perm((__vector unsigned short)cr0,
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(__vector unsigned short)cr1, shift_pack_index);
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cr23 = vec_perm((__vector unsigned short)cr2,
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(__vector unsigned short)cr3, shift_pack_index);
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cr = vec_pack(cr01, cr23);
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vec_st(cr, 0, outptr2);
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}
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}
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}
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143
simd/jccolor-altivec.c
Normal file
143
simd/jccolor-altivec.c
Normal file
@@ -0,0 +1,143 @@
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/*
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* AltiVec optimizations for libjpeg-turbo
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*
|
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* Copyright (C) 2014, D. R. Commander.
|
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* All rights reserved.
|
||||
* This software is provided 'as-is', without any express or implied
|
||||
* warranty. In no event will the authors be held liable for any damages
|
||||
* arising from the use of this software.
|
||||
*
|
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* Permission is granted to anyone to use this software for any purpose,
|
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* including commercial applications, and to alter it and redistribute it
|
||||
* freely, subject to the following restrictions:
|
||||
*
|
||||
* 1. The origin of this software must not be misrepresented; you must not
|
||||
* claim that you wrote the original software. If you use this software
|
||||
* in a product, an acknowledgment in the product documentation would be
|
||||
* appreciated but is not required.
|
||||
* 2. Altered source versions must be plainly marked as such, and must not be
|
||||
* misrepresented as being the original software.
|
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* 3. This notice may not be removed or altered from any source distribution.
|
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*/
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/* RGB --> YCC CONVERSION */
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#include "jsimd_altivec.h"
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#define F_0_081 5329 /* FIX(0.08131) */
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#define F_0_114 7471 /* FIX(0.11400) */
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#define F_0_168 11059 /* FIX(0.16874) */
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#define F_0_250 16384 /* FIX(0.25000) */
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#define F_0_299 19595 /* FIX(0.29900) */
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#define F_0_331 21709 /* FIX(0.33126) */
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#define F_0_418 27439 /* FIX(0.41869) */
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#define F_0_500 32768 /* FIX(0.50000) */
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#define F_0_587 38470 /* FIX(0.58700) */
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#define F_0_337 (F_0_587 - F_0_250) /* FIX(0.58700) - FIX(0.25000) */
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#define SCALEBITS 16
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#define ONE_HALF (1 << (SCALEBITS - 1))
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#define RGBG_INDEX0 {0,1,3,4,6,7,9,10,2,1,5,4,8,7,11,10}
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#define RGBG_INDEX1 {12,13,15,16,18,19,21,22,14,13,17,16,20,19,23,22}
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#define RGBG_INDEX2 {8,9,11,12,14,15,17,18,10,9,13,12,16,15,19,18}
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#define RGBG_INDEX3 {4,5,7,8,10,11,13,14,6,5,9,8,12,11,15,14}
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#include "jccolext-altivec.c"
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#undef RGB_RED
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#undef RGB_GREEN
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#undef RGB_BLUE
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#undef RGB_PIXELSIZE
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#define RGB_RED EXT_RGB_RED
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#define RGB_GREEN EXT_RGB_GREEN
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#define RGB_BLUE EXT_RGB_BLUE
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#define RGB_PIXELSIZE EXT_RGB_PIXELSIZE
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#define jsimd_rgb_ycc_convert_altivec jsimd_extrgb_ycc_convert_altivec
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#include "jccolext-altivec.c"
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#undef RGB_RED
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#undef RGB_GREEN
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#undef RGB_BLUE
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX0
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#undef RGBG_INDEX1
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#undef RGBG_INDEX2
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#undef RGBG_INDEX3
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#undef jsimd_rgb_ycc_convert_altivec
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#define RGB_RED EXT_RGBX_RED
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#define RGB_GREEN EXT_RGBX_GREEN
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#define RGB_BLUE EXT_RGBX_BLUE
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#define RGB_PIXELSIZE EXT_RGBX_PIXELSIZE
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#define RGBG_INDEX {0,1,4,5,8,9,12,13,2,1,6,5,10,9,14,13}
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#define jsimd_rgb_ycc_convert_altivec jsimd_extrgbx_ycc_convert_altivec
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#include "jccolext-altivec.c"
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#undef RGB_RED
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#undef RGB_GREEN
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#undef RGB_BLUE
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#undef RGB_PIXELSIZE
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#undef RGBG_INDEX
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#undef jsimd_rgb_ycc_convert_altivec
|
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#define RGB_RED EXT_BGR_RED
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#define RGB_GREEN EXT_BGR_GREEN
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#define RGB_BLUE EXT_BGR_BLUE
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#define RGB_PIXELSIZE EXT_BGR_PIXELSIZE
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#define RGBG_INDEX0 {2,1,5,4,8,7,11,10,0,1,3,4,6,7,9,10}
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#define RGBG_INDEX1 {14,13,17,16,20,19,23,22,12,13,15,16,18,19,21,22}
|
||||
#define RGBG_INDEX2 {10,9,13,12,16,15,19,18,8,9,11,12,14,15,17,18}
|
||||
#define RGBG_INDEX3 {6,5,9,8,12,11,15,14,4,5,7,8,10,11,13,14}
|
||||
#define jsimd_rgb_ycc_convert_altivec jsimd_extbgr_ycc_convert_altivec
|
||||
#include "jccolext-altivec.c"
|
||||
#undef RGB_RED
|
||||
#undef RGB_GREEN
|
||||
#undef RGB_BLUE
|
||||
#undef RGB_PIXELSIZE
|
||||
#undef RGBG_INDEX0
|
||||
#undef RGBG_INDEX1
|
||||
#undef RGBG_INDEX2
|
||||
#undef RGBG_INDEX3
|
||||
#undef jsimd_rgb_ycc_convert_altivec
|
||||
|
||||
#define RGB_RED EXT_BGRX_RED
|
||||
#define RGB_GREEN EXT_BGRX_GREEN
|
||||
#define RGB_BLUE EXT_BGRX_BLUE
|
||||
#define RGB_PIXELSIZE EXT_BGRX_PIXELSIZE
|
||||
#define RGBG_INDEX {2,1,6,5,10,9,14,13,0,1,4,5,8,9,12,13}
|
||||
#define jsimd_rgb_ycc_convert_altivec jsimd_extbgrx_ycc_convert_altivec
|
||||
#include "jccolext-altivec.c"
|
||||
#undef RGB_RED
|
||||
#undef RGB_GREEN
|
||||
#undef RGB_BLUE
|
||||
#undef RGB_PIXELSIZE
|
||||
#undef RGBG_INDEX
|
||||
#undef jsimd_rgb_ycc_convert_altivec
|
||||
|
||||
#define RGB_RED EXT_XBGR_RED
|
||||
#define RGB_GREEN EXT_XBGR_GREEN
|
||||
#define RGB_BLUE EXT_XBGR_BLUE
|
||||
#define RGB_PIXELSIZE EXT_XBGR_PIXELSIZE
|
||||
#define RGBG_INDEX {3,2,7,6,11,10,15,14,1,2,5,6,9,10,13,14}
|
||||
#define jsimd_rgb_ycc_convert_altivec jsimd_extxbgr_ycc_convert_altivec
|
||||
#include "jccolext-altivec.c"
|
||||
#undef RGB_RED
|
||||
#undef RGB_GREEN
|
||||
#undef RGB_BLUE
|
||||
#undef RGB_PIXELSIZE
|
||||
#undef RGBG_INDEX
|
||||
#undef jsimd_rgb_ycc_convert_altivec
|
||||
|
||||
#define RGB_RED EXT_XRGB_RED
|
||||
#define RGB_GREEN EXT_XRGB_GREEN
|
||||
#define RGB_BLUE EXT_XRGB_BLUE
|
||||
#define RGB_PIXELSIZE EXT_XRGB_PIXELSIZE
|
||||
#define RGBG_INDEX {1,2,5,6,9,10,13,14,3,2,7,6,11,10,15,14}
|
||||
#define jsimd_rgb_ycc_convert_altivec jsimd_extxrgb_ycc_convert_altivec
|
||||
#include "jccolext-altivec.c"
|
||||
#undef RGB_RED
|
||||
#undef RGB_GREEN
|
||||
#undef RGB_BLUE
|
||||
#undef RGB_PIXELSIZE
|
||||
#undef RGBG_INDEX
|
||||
#undef jsimd_rgb_ycc_convert_altivec
|
||||
22
simd/jsimd.h
22
simd/jsimd.h
@@ -116,6 +116,28 @@ EXTERN(void) jsimd_extxrgb_ycc_convert_mips_dspr2
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
|
||||
EXTERN(void) jsimd_rgb_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
EXTERN(void) jsimd_extrgb_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
EXTERN(void) jsimd_extrgbx_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
EXTERN(void) jsimd_extbgr_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
EXTERN(void) jsimd_extbgrx_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
EXTERN(void) jsimd_extxbgr_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
EXTERN(void) jsimd_extxrgb_ycc_convert_altivec
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows);
|
||||
|
||||
/* RGB & extended RGB --> Grayscale Colorspace Conversion */
|
||||
EXTERN(void) jsimd_rgb_gray_convert_mmx
|
||||
(JDIMENSION img_width, JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
|
||||
@@ -42,6 +42,19 @@ init_simd (void)
|
||||
GLOBAL(int)
|
||||
jsimd_can_rgb_ycc (void)
|
||||
{
|
||||
init_simd();
|
||||
|
||||
/* The code is optimised for these values only */
|
||||
if (BITS_IN_JSAMPLE != 8)
|
||||
return 0;
|
||||
if (sizeof(JDIMENSION) != 4)
|
||||
return 0;
|
||||
if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
|
||||
return 0;
|
||||
|
||||
if (simd_support & JSIMD_ALTIVEC)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@@ -68,6 +81,37 @@ jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
|
||||
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
||||
JDIMENSION output_row, int num_rows)
|
||||
{
|
||||
void (*altivecfct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
|
||||
|
||||
switch(cinfo->in_color_space) {
|
||||
case JCS_EXT_RGB:
|
||||
altivecfct=jsimd_extrgb_ycc_convert_altivec;
|
||||
break;
|
||||
case JCS_EXT_RGBX:
|
||||
case JCS_EXT_RGBA:
|
||||
altivecfct=jsimd_extrgbx_ycc_convert_altivec;
|
||||
break;
|
||||
case JCS_EXT_BGR:
|
||||
altivecfct=jsimd_extbgr_ycc_convert_altivec;
|
||||
break;
|
||||
case JCS_EXT_BGRX:
|
||||
case JCS_EXT_BGRA:
|
||||
altivecfct=jsimd_extbgrx_ycc_convert_altivec;
|
||||
break;
|
||||
case JCS_EXT_XBGR:
|
||||
case JCS_EXT_ABGR:
|
||||
altivecfct=jsimd_extxbgr_ycc_convert_altivec;
|
||||
break;
|
||||
case JCS_EXT_XRGB:
|
||||
case JCS_EXT_ARGB:
|
||||
altivecfct=jsimd_extxrgb_ycc_convert_altivec;
|
||||
break;
|
||||
default:
|
||||
altivecfct=jsimd_rgb_ycc_convert_altivec;
|
||||
break;
|
||||
}
|
||||
|
||||
altivecfct(cinfo->image_width, input_buf, output_buf, output_row, num_rows);
|
||||
}
|
||||
|
||||
GLOBAL(void)
|
||||
|
||||
Reference in New Issue
Block a user