/* * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com> * * Blackfin software video scaler operations * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */#include <stdio.h>#include <stdlib.h>#include <string.h>#include <inttypes.h>#include <assert.h>#include "config.h"#ifdef HAVE_MALLOC_H#include <malloc.h>#endif#include <unistd.h>#include "rgb2rgb.h"#include "swscale.h"#include "swscale_internal.h"#ifdef __FDPIC__#define L1CODE __attribute__ ((l1_text))#else#define L1CODE#endifextern int ff_bfin_uyvytoyv12 (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,                               long width, long height,                               long lumStride, long chromStride, long srcStride) L1CODE;extern int ff_bfin_yuyvtoyv12 (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,                               long width, long height,                               long lumStride, long chromStride, long srcStride) L1CODE;static int uyvytoyv12_unscaled (SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,                                int srcSliceH, uint8_t* dst[], int dstStride[]){    uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;    uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;    uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;    uint8_t *ip   = src[0] + srcStride[0]*srcSliceY;    int w         = dstStride[0];    ff_bfin_uyvytoyv12 (ip, dsty, dstu, dstv, w, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);    return srcSliceH;}static int yuyvtoyv12_unscaled (SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,                                int srcSliceH, uint8_t* dst[], int dstStride[]){    uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;    uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;    uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;    uint8_t *ip   = src[0] + srcStride[0]*srcSliceY;    int w         = dstStride[0];    ff_bfin_yuyvtoyv12 (ip, dsty, dstu, dstv, w, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);    return srcSliceH;}void ff_bfin_get_unscaled_swscale (SwsContext *c){    SwsFunc swScale = c->swScale;    if (c->flags & SWS_CPU_CAPS_BFIN)        if (c->dstFormat == PIX_FMT_YUV420P)            if (c->srcFormat == PIX_FMT_UYVY422) {                av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized uyvytoyv12_unscaled\n");                c->swScale = uyvytoyv12_unscaled;            }        if (c->dstFormat == PIX_FMT_YUV420P)            if (c->srcFormat == PIX_FMT_YUYV422) {                av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized yuyvtoyv12_unscaled\n");                c->swScale = yuyvtoyv12_unscaled;            }}