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adding Blackfin swscale_bfin infrastructure, and the first swscale routine uyvy to yv12 video resampler 

Originally committed as revision 23604 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Marc Hoffman 2007-06-22 12:45:18 +00:00
parent b05b193172
commit c185b405c1
1 changed files with 66 additions and 0 deletions
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libswscale/swscale_bfin.c Normal file
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/*
* 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"
extern 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) __attribute__ ((l1_text));
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;
}
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;
}
}