Move bfin specific code to its subdir.
[libav.git] / libswscale / bfin / swscale_bfin.c
1 /*
2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
3 *
4 * Blackfin software video scaler operations
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <inttypes.h>
27 #include <assert.h>
28 #include "config.h"
29 #include <unistd.h>
30 #include "libswscale/rgb2rgb.h"
31 #include "libswscale/swscale.h"
32 #include "libswscale/swscale_internal.h"
33
34 #ifdef __FDPIC__
35 #define L1CODE __attribute__ ((l1_text))
36 #else
37 #define L1CODE
38 #endif
39
40 int ff_bfin_uyvytoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
41 long width, long height,
42 long lumStride, long chromStride, long srcStride) L1CODE;
43
44 int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
45 long width, long height,
46 long lumStride, long chromStride, long srcStride) L1CODE;
47
48 static int uyvytoyv12_unscaled(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
49 int srcSliceH, uint8_t* dst[], int dstStride[])
50 {
51 uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;
52 uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;
53 uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;
54 uint8_t *ip = src[0] + srcStride[0]*srcSliceY;
55 int w = dstStride[0];
56
57 ff_bfin_uyvytoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
58 dstStride[0], dstStride[1], srcStride[0]);
59
60 return srcSliceH;
61 }
62
63 static int yuyvtoyv12_unscaled(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
64 int srcSliceH, uint8_t* dst[], int dstStride[])
65 {
66 uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;
67 uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;
68 uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;
69 uint8_t *ip = src[0] + srcStride[0]*srcSliceY;
70 int w = dstStride[0];
71
72 ff_bfin_yuyvtoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
73 dstStride[0], dstStride[1], srcStride[0]);
74
75 return srcSliceH;
76 }
77
78
79 void ff_bfin_get_unscaled_swscale(SwsContext *c)
80 {
81 SwsFunc swScale = c->swScale;
82 if (c->flags & SWS_CPU_CAPS_BFIN)
83 if (c->dstFormat == PIX_FMT_YUV420P)
84 if (c->srcFormat == PIX_FMT_UYVY422) {
85 av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized uyvytoyv12_unscaled\n");
86 c->swScale = uyvytoyv12_unscaled;
87 }
88 if (c->dstFormat == PIX_FMT_YUV420P)
89 if (c->srcFormat == PIX_FMT_YUYV422) {
90 av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized yuyvtoyv12_unscaled\n");
91 c->swScale = yuyvtoyv12_unscaled;
92 }
93 }