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ffmpeg / libswscale / yuv2rgb_vis.c @ e0c850a8

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1 90c1d7b4 Denes Balatoni
/*
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 * VIS optimized software YUV to RGB converter
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 * Copyright (c) 2007 Denes Balatoni <dbalatoni@programozo.hu>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include <inttypes.h>
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#include <stdlib.h>
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#include "swscale.h"
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#define YUV2RGB_INIT \
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    "wr %%g0, 0x10, %%gsr \n\t" \
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    "ldd [%5], %%f32      \n\t" \
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    "ldd [%5+8], %%f34    \n\t" \
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    "ldd [%5+16], %%f36   \n\t" \
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    "ldd [%5+24], %%f38   \n\t" \
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    "ldd [%5+32], %%f40   \n\t" \
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    "ldd [%5+40], %%f42   \n\t" \
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    "ldd [%5+48], %%f44   \n\t" \
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    "ldd [%5+56], %%f46   \n\t" \
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    "ldd [%5+64], %%f48   \n\t" \
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    "ldd [%5+72], %%f50   \n\t"
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#define YUV2RGB_KERNEL \
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    /* ^^^^ f0=Y f3=u f5=v */ \
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    "fmul8x16 %%f3, %%f48, %%f6   \n\t" \
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    "fmul8x16 %%f19, %%f48, %%f22 \n\t" \
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    "fmul8x16 %%f5, %%f44, %%f8   \n\t" \
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    "fmul8x16 %%f21, %%f44, %%f24 \n\t" \
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    "fmul8x16 %%f0, %%f42, %%f0   \n\t" \
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    "fmul8x16 %%f16, %%f42, %%f16 \n\t" \
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    "fmul8x16 %%f3, %%f50, %%f2   \n\t" \
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    "fmul8x16 %%f19, %%f50, %%f18 \n\t" \
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    "fmul8x16 %%f5, %%f46, %%f4   \n\t" \
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    "fmul8x16 %%f21, %%f46, %%f20 \n\t" \
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    \
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    "fpsub16 %%f6, %%f34, %%f6   \n\t" /* 1 */ \
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    "fpsub16 %%f22, %%f34, %%f22 \n\t" /* 1 */ \
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    "fpsub16 %%f8, %%f38, %%f8   \n\t" /* 3 */ \
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    "fpsub16 %%f24, %%f38, %%f24 \n\t" /* 3 */ \
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    "fpsub16 %%f0, %%f32, %%f0   \n\t" /* 0 */ \
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    "fpsub16 %%f16, %%f32, %%f16 \n\t" /* 0 */ \
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    "fpsub16 %%f2, %%f36, %%f2   \n\t" /* 2 */ \
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    "fpsub16 %%f18, %%f36, %%f18 \n\t" /* 2 */ \
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    "fpsub16 %%f4, %%f40, %%f4   \n\t" /* 4 */ \
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    "fpsub16 %%f20, %%f40, %%f20 \n\t" /* 4 */ \
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    \
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    "fpadd16 %%f0, %%f8, %%f8    \n\t" /* Gt */ \
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    "fpadd16 %%f16, %%f24, %%f24 \n\t" /* Gt */ \
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    "fpadd16 %%f0, %%f4, %%f4    \n\t" /* R */ \
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    "fpadd16 %%f16, %%f20, %%f20 \n\t" /* R */ \
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    "fpadd16 %%f0, %%f6, %%f6    \n\t" /* B */ \
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    "fpadd16 %%f16, %%f22, %%f22 \n\t" /* B */ \
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    "fpadd16 %%f8, %%f2, %%f2    \n\t" /* G */ \
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    "fpadd16 %%f24, %%f18, %%f18 \n\t" /* G */ \
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    \
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    "fpack16 %%f4, %%f4    \n\t" \
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    "fpack16 %%f20, %%f20  \n\t" \
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    "fpack16 %%f6, %%f6    \n\t" \
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    "fpack16 %%f22, %%f22  \n\t" \
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    "fpack16 %%f2, %%f2    \n\t" \
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    "fpack16 %%f18, %%f18  \n\t"
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static int vis_420P_ARGB32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
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                           int srcSliceH, uint8_t* dst[], int dstStride[]){
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  int y, out1, out2, out3, out4, out5, out6;
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  for(y=0;y < srcSliceH;++y) {
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      asm volatile (
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          YUV2RGB_INIT
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          "wr %%g0, 0xd2, %%asi        \n\t" /* ASI_FL16_P */
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          "1:                          \n\t"
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          "ldda [%1] %%asi, %%f2       \n\t"
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          "ldda [%1+2] %%asi, %%f18    \n\t"
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          "ldda [%2] %%asi, %%f4       \n\t"
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          "ldda [%2+2] %%asi, %%f20    \n\t"
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          "ld [%0], %%f0               \n\t"
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          "ld [%0+4], %%f16            \n\t"
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          "fpmerge %%f3, %%f3, %%f2    \n\t"
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          "fpmerge %%f19, %%f19, %%f18 \n\t"
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          "fpmerge %%f5, %%f5, %%f4    \n\t"
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          "fpmerge %%f21, %%f21, %%f20 \n\t"
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          YUV2RGB_KERNEL
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          "fzero %%f0                  \n\t"
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          "fpmerge %%f4, %%f6, %%f8    \n\t"  // r,b,t1
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          "fpmerge %%f20, %%f22, %%f24 \n\t"  // r,b,t1
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          "fpmerge %%f0, %%f2, %%f10   \n\t"  // 0,g,t2
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          "fpmerge %%f0, %%f18, %%f26  \n\t"  // 0,g,t2
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          "fpmerge %%f10, %%f8, %%f4   \n\t"  // t2,t1,msb
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          "fpmerge %%f26, %%f24, %%f20 \n\t"  // t2,t1,msb
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          "fpmerge %%f11, %%f9, %%f6   \n\t"  // t2,t1,lsb
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          "fpmerge %%f27, %%f25, %%f22 \n\t"  // t2,t1,lsb
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          "std %%f4, [%3]              \n\t"
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          "std %%f20, [%3+16]          \n\t"
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          "std %%f6, [%3+8]            \n\t"
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          "std %%f22, [%3+24]          \n\t"
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          "add %0, 8, %0   \n\t"
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          "add %1, 4, %1   \n\t"
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          "add %2, 4, %2   \n\t"
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          "subcc %4, 8, %4 \n\t"
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          "bne 1b          \n\t"
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          "add %3, 32, %3  \n\t" //delay slot
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          : "=r" (out1), "=r" (out2), "=r" (out3), "=r" (out4), "=r" (out5), "=r" (out6)
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          : "0" (src[0]+(y+srcSliceY)*srcStride[0]), "1" (src[1]+((y+srcSliceY)>>1)*srcStride[1]),
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            "2" (src[2]+((y+srcSliceY)>>1)*srcStride[2]), "3" (dst[0]+(y+srcSliceY)*dstStride[0]),
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            "4" (c->dstW),
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            "5" (c->sparc_coeffs)
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      );
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  }
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  return srcSliceH;
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}
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static int vis_422P_ARGB32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
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                           int srcSliceH, uint8_t* dst[], int dstStride[]){
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  int y, out1, out2, out3, out4, out5, out6;
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  for(y=0;y < srcSliceH;++y) {
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      asm volatile (
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          YUV2RGB_INIT
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          "wr %%g0, 0xd2, %%asi        \n\t" /* ASI_FL16_P */
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          "1:                          \n\t"
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          "ldda [%1] %%asi, %%f2       \n\t"
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          "ldda [%1+2] %%asi, %%f18    \n\t"
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          "ldda [%2] %%asi, %%f4       \n\t"
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          "ldda [%2+2] %%asi, %%f20    \n\t"
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          "ld [%0], %%f0               \n\t"
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          "ld [%0+4], %%f16            \n\t"
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          "fpmerge %%f3, %%f3, %%f2    \n\t"
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          "fpmerge %%f19, %%f19, %%f18 \n\t"
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          "fpmerge %%f5, %%f5, %%f4    \n\t"
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          "fpmerge %%f21, %%f21, %%f20 \n\t"
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          YUV2RGB_KERNEL
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          "fzero %%f0 \n\t"
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          "fpmerge %%f4, %%f6, %%f8    \n\t"  // r,b,t1
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          "fpmerge %%f20, %%f22, %%f24 \n\t"  // r,b,t1
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          "fpmerge %%f0, %%f2, %%f10   \n\t"  // 0,g,t2
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          "fpmerge %%f0, %%f18, %%f26  \n\t"  // 0,g,t2
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          "fpmerge %%f10, %%f8, %%f4   \n\t"  // t2,t1,msb
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          "fpmerge %%f26, %%f24, %%f20 \n\t"  // t2,t1,msb
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          "fpmerge %%f11, %%f9, %%f6   \n\t"  // t2,t1,lsb
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          "fpmerge %%f27, %%f25, %%f22 \n\t"  // t2,t1,lsb
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          "std %%f4, [%3]              \n\t"
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          "std %%f20, [%3+16]          \n\t"
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          "std %%f6, [%3+8]            \n\t"
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          "std %%f22, [%3+24]          \n\t"
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          "add %0, 8, %0   \n\t"
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          "add %1, 4, %1   \n\t"
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          "add %2, 4, %2   \n\t"
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          "subcc %4, 8, %4 \n\t"
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          "bne 1b          \n\t"
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          "add %3, 32, %3  \n\t" //delay slot
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          : "=r" (out1), "=r" (out2), "=r" (out3), "=r" (out4), "=r" (out5), "=r" (out6)
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          : "0" (src[0]+(y+srcSliceY)*srcStride[0]), "1" (src[1]+(y+srcSliceY)*srcStride[1]),
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            "2" (src[2]+(y+srcSliceY)*srcStride[2]), "3" (dst[0]+(y+srcSliceY)*dstStride[0]),
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            "4" (c->dstW),
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            "5" (c->sparc_coeffs)
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      );
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  }
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  return srcSliceH;
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}
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SwsFunc yuv2rgb_init_vis(SwsContext *c) {
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    c->sparc_coeffs[5]=c->yCoeff;
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    c->sparc_coeffs[6]=c->vgCoeff;
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    c->sparc_coeffs[7]=c->vrCoeff;
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    c->sparc_coeffs[8]=c->ubCoeff;
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    c->sparc_coeffs[9]=c->ugCoeff;
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    c->sparc_coeffs[0]=(((int16_t)c->yOffset*(int16_t)c->yCoeff>>11) & 0xffff) * 0x0001000100010001ULL;
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    c->sparc_coeffs[1]=(((int16_t)c->uOffset*(int16_t)c->ubCoeff>>11) & 0xffff) * 0x0001000100010001ULL;
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    c->sparc_coeffs[2]=(((int16_t)c->uOffset*(int16_t)c->ugCoeff>>11) & 0xffff) * 0x0001000100010001ULL;
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    c->sparc_coeffs[3]=(((int16_t)c->vOffset*(int16_t)c->vgCoeff>>11) & 0xffff) * 0x0001000100010001ULL;
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    c->sparc_coeffs[4]=(((int16_t)c->vOffset*(int16_t)c->vrCoeff>>11) & 0xffff) * 0x0001000100010001ULL;
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    if (c->dstFormat == PIX_FMT_RGB32 && c->srcFormat == PIX_FMT_YUV422P && (c->dstW & 7)==0) {
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        av_log(c, AV_LOG_INFO, "SPARC VIS accelerated YUV422P -> RGB32\n");
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        return vis_422P_ARGB32;
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    }
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    else if (c->dstFormat == PIX_FMT_RGB32 && c->srcFormat == PIX_FMT_YUV420P && (c->dstW & 7)==0) {
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        av_log(c, AV_LOG_INFO, "SPARC VIS accelerated YUV420P -> RGB32\n");
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        return vis_420P_ARGB32;
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    }
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    return NULL;
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}