1/* 2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com> 3 * 4 * Blackfin software video scaler operations 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include <stdio.h> 24#include <stdlib.h> 25#include <string.h> 26#include <inttypes.h> 27#include <assert.h> 28#include "config.h" 29#include <unistd.h> 30#include "libswscale/rgb2rgb.h" 31#include "libswscale/swscale.h" 32#include "libswscale/swscale_internal.h" 33 34#if defined (__FDPIC__) && CONFIG_SRAM 35#define L1CODE __attribute__ ((l1_text)) 36#else 37#define L1CODE 38#endif 39 40int ff_bfin_uyvytoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst, 41 long width, long height, 42 long lumStride, long chromStride, long srcStride) L1CODE; 43 44int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst, 45 long width, long height, 46 long lumStride, long chromStride, long srcStride) L1CODE; 47 48static int uyvytoyv12_unscaled(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, 49 int srcSliceH, uint8_t* dst[], int dstStride[]) 50{ 51 uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY; 52 uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2; 53 uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2; 54 uint8_t *ip = src[0] + srcStride[0]*srcSliceY; 55 int w = dstStride[0]; 56 57 ff_bfin_uyvytoyv12(ip, dsty, dstu, dstv, w, srcSliceH, 58 dstStride[0], dstStride[1], srcStride[0]); 59 60 return srcSliceH; 61} 62 63static int yuyvtoyv12_unscaled(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, 64 int srcSliceH, uint8_t* dst[], int dstStride[]) 65{ 66 uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY; 67 uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2; 68 uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2; 69 uint8_t *ip = src[0] + srcStride[0]*srcSliceY; 70 int w = dstStride[0]; 71 72 ff_bfin_yuyvtoyv12(ip, dsty, dstu, dstv, w, srcSliceH, 73 dstStride[0], dstStride[1], srcStride[0]); 74 75 return srcSliceH; 76} 77 78 79void ff_bfin_get_unscaled_swscale(SwsContext *c) 80{ 81 SwsFunc swScale = c->swScale; 82 if (c->flags & SWS_CPU_CAPS_BFIN) 83 if (c->dstFormat == PIX_FMT_YUV420P) 84 if (c->srcFormat == PIX_FMT_UYVY422) { 85 av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized uyvytoyv12_unscaled\n"); 86 c->swScale = uyvytoyv12_unscaled; 87 } 88 if (c->dstFormat == PIX_FMT_YUV420P) 89 if (c->srcFormat == PIX_FMT_YUYV422) { 90 av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized yuyvtoyv12_unscaled\n"); 91 c->swScale = yuyvtoyv12_unscaled; 92 } 93} 94