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/*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* Blackfin software video scaler operations
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "config.h"
#include "libswscale/swscale_internal.h"
#if defined (__FDPIC__) && CONFIG_SRAM
#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, int width, int height,
int lumStride, int chromStride, int srcStride) L1CODE;
int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
uint8_t *vdst, int width, int height,
int lumStride, int chromStride, int srcStride) L1CODE;
static int uyvytoyv12_unscaled(SwsContext *c, const 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;
const 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, const 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;
const 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)
{
if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_UYVY422) {
av_log(NULL, AV_LOG_VERBOSE,
"selecting Blackfin optimized uyvytoyv12_unscaled\n");
c->swScale = uyvytoyv12_unscaled;
}
if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_YUYV422) {
av_log(NULL, AV_LOG_VERBOSE,
"selecting Blackfin optimized yuyvtoyv12_unscaled\n");
c->swScale = yuyvtoyv12_unscaled;
}
}
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