/*
  * 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"
 #include <unistd.h>
 #include "rgb2rgb.h"
 #include "swscale.h"
 #include "swscale_internal.h"
 
 #ifdef __FDPIC__
 #define L1CODE __attribute__ ((l1_text))
 #else
 #define L1CODE
 #endif
 
 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;
 
 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;
             }
 }