mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-11 09:35:22 +00:00
87 lines
3.2 KiB
C
87 lines
3.2 KiB
C
/*
|
|
* 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;
|
|
}
|
|
}
|