85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/*
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* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
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*
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* Blackfin software video scaler operations
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/bfin/attributes.h"
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#include "libswscale/swscale_internal.h"
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int ff_bfin_uyvytoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
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uint8_t *vdst, int width, int height,
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int lumStride, int chromStride,
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int srcStride) attribute_l1_text;
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int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
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uint8_t *vdst, int width, int height,
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int lumStride, int chromStride,
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int srcStride) attribute_l1_text;
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static int uyvytoyv12_unscaled(SwsContext *c, const uint8_t *src[],
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int srcStride[], int srcSliceY, int srcSliceH,
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uint8_t *dst[], int dstStride[])
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{
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uint8_t *dsty = dst[0] + dstStride[0] * srcSliceY;
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uint8_t *dstu = dst[1] + dstStride[1] * srcSliceY / 2;
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uint8_t *dstv = dst[2] + dstStride[2] * srcSliceY / 2;
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const uint8_t *ip = src[0] + srcStride[0] * srcSliceY;
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int w = dstStride[0];
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ff_bfin_uyvytoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
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dstStride[0], dstStride[1], srcStride[0]);
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return srcSliceH;
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}
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static int yuyvtoyv12_unscaled(SwsContext *c, const uint8_t *src[],
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int srcStride[], int srcSliceY, int srcSliceH,
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uint8_t *dst[], int dstStride[])
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{
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uint8_t *dsty = dst[0] + dstStride[0] * srcSliceY;
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uint8_t *dstu = dst[1] + dstStride[1] * srcSliceY / 2;
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uint8_t *dstv = dst[2] + dstStride[2] * srcSliceY / 2;
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const uint8_t *ip = src[0] + srcStride[0] * srcSliceY;
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int w = dstStride[0];
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ff_bfin_yuyvtoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
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dstStride[0], dstStride[1], srcStride[0]);
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return srcSliceH;
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}
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av_cold void ff_get_unscaled_swscale_bfin(SwsContext *c)
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{
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if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_UYVY422) {
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av_log(NULL, AV_LOG_VERBOSE,
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"selecting Blackfin optimized uyvytoyv12_unscaled\n");
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c->swscale = uyvytoyv12_unscaled;
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}
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if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_YUYV422) {
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av_log(NULL, AV_LOG_VERBOSE,
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"selecting Blackfin optimized yuyvtoyv12_unscaled\n");
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c->swscale = yuyvtoyv12_unscaled;
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}
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}
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