2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
4 * Blackfin software video scaler operations
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/attributes.h"
27 #include "libswscale/swscale_internal.h"
29 #if defined (__FDPIC__) && CONFIG_SRAM
30 #define L1CODE __attribute__((l1_text))
35 int ff_bfin_uyvytoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
36 uint8_t *vdst, int width, int height,
37 int lumStride, int chromStride, int srcStride) L1CODE;
39 int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
40 uint8_t *vdst, int width, int height,
41 int lumStride, int chromStride, int srcStride) L1CODE;
43 static int uyvytoyv12_unscaled(SwsContext *c, const uint8_t *src[],
44 int srcStride[], int srcSliceY, int srcSliceH,
45 uint8_t *dst[], int dstStride[])
47 uint8_t *dsty = dst[0] + dstStride[0] * srcSliceY;
48 uint8_t *dstu = dst[1] + dstStride[1] * srcSliceY / 2;
49 uint8_t *dstv = dst[2] + dstStride[2] * srcSliceY / 2;
50 const uint8_t *ip = src[0] + srcStride[0] * srcSliceY;
53 ff_bfin_uyvytoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
54 dstStride[0], dstStride[1], srcStride[0]);
59 static int yuyvtoyv12_unscaled(SwsContext *c, const uint8_t *src[],
60 int srcStride[], int srcSliceY, int srcSliceH,
61 uint8_t *dst[], int dstStride[])
63 uint8_t *dsty = dst[0] + dstStride[0] * srcSliceY;
64 uint8_t *dstu = dst[1] + dstStride[1] * srcSliceY / 2;
65 uint8_t *dstv = dst[2] + dstStride[2] * srcSliceY / 2;
66 const uint8_t *ip = src[0] + srcStride[0] * srcSliceY;
69 ff_bfin_yuyvtoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
70 dstStride[0], dstStride[1], srcStride[0]);
75 av_cold void ff_get_unscaled_swscale_bfin(SwsContext *c)
77 if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_UYVY422) {
78 av_log(NULL, AV_LOG_VERBOSE,
79 "selecting Blackfin optimized uyvytoyv12_unscaled\n");
80 c->swscale = uyvytoyv12_unscaled;
82 if (c->dstFormat == AV_PIX_FMT_YUV420P && c->srcFormat == AV_PIX_FMT_YUYV422) {
83 av_log(NULL, AV_LOG_VERBOSE,
84 "selecting Blackfin optimized yuyvtoyv12_unscaled\n");
85 c->swscale = yuyvtoyv12_unscaled;