Create swscale subdirs for out-of-tree builds.
[libav.git] / libswscale / bfin / yuv2rgb_bfin.c
1 /*
2 * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
3 *
4 * Blackfin video color space converter operations
5 * convert I420 YV12 to RGB in various formats
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <inttypes.h>
28 #include <assert.h>
29 #include "config.h"
30 #include <unistd.h>
31 #include "libswscale/rgb2rgb.h"
32 #include "libswscale/swscale.h"
33 #include "libswscale/swscale_internal.h"
34
35 #ifdef __FDPIC__
36 #define L1CODE __attribute__ ((l1_text))
37 #else
38 #define L1CODE
39 #endif
40
41 void ff_bfin_yuv2rgb555_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
42 int w, uint32_t *coeffs) L1CODE;
43
44 void ff_bfin_yuv2rgb565_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
45 int w, uint32_t *coeffs) L1CODE;
46
47 void ff_bfin_yuv2rgb24_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
48 int w, uint32_t *coeffs) L1CODE;
49
50 typedef void (* ltransform)(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
51 int w, uint32_t *coeffs);
52
53
54 static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
55 {
56 int oy;
57 oy = c->yOffset&0xffff;
58 oy = oy >> 3; // keep everything U8.0 for offset calculation
59
60 c->oc = 128*0x01010101U;
61 c->oy = oy*0x01010101U;
62
63 /* copy 64bit vector coeffs down to 32bit vector coeffs */
64 c->cy = c->yCoeff;
65 c->zero = 0;
66
67 if (rgb) {
68 c->crv = c->vrCoeff;
69 c->cbu = c->ubCoeff;
70 c->cgu = c->ugCoeff;
71 c->cgv = c->vgCoeff;
72 } else {
73 c->crv = c->ubCoeff;
74 c->cbu = c->vrCoeff;
75 c->cgu = c->vgCoeff;
76 c->cgv = c->ugCoeff;
77 }
78
79
80 if (masks == 555) {
81 c->rmask = 0x001f * 0x00010001U;
82 c->gmask = 0x03e0 * 0x00010001U;
83 c->bmask = 0x7c00 * 0x00010001U;
84 } else if (masks == 565) {
85 c->rmask = 0x001f * 0x00010001U;
86 c->gmask = 0x07e0 * 0x00010001U;
87 c->bmask = 0xf800 * 0x00010001U;
88 }
89 }
90
91 static int core_yuv420_rgb(SwsContext *c,
92 uint8_t **in, int *instrides,
93 int srcSliceY, int srcSliceH,
94 uint8_t **oplanes, int *outstrides,
95 ltransform lcscf, int rgb, int masks)
96 {
97 uint8_t *py,*pu,*pv,*op;
98 int w = instrides[0];
99 int h2 = srcSliceH>>1;
100 int i;
101
102 bfin_prepare_coefficients(c, rgb, masks);
103
104 py = in[0];
105 pu = in[1+(1^rgb)];
106 pv = in[1+(0^rgb)];
107
108 op = oplanes[0] + srcSliceY*outstrides[0];
109
110 for (i=0;i<h2;i++) {
111
112 lcscf(py, pu, pv, op, w, &c->oy);
113
114 py += instrides[0];
115 op += outstrides[0];
116
117 lcscf(py, pu, pv, op, w, &c->oy);
118
119 py += instrides[0];
120 pu += instrides[1];
121 pv += instrides[2];
122 op += outstrides[0];
123 }
124
125 return srcSliceH;
126 }
127
128
129 static int bfin_yuv420_rgb555(SwsContext *c,
130 uint8_t **in, int *instrides,
131 int srcSliceY, int srcSliceH,
132 uint8_t **oplanes, int *outstrides)
133 {
134 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
135 outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
136 }
137
138 static int bfin_yuv420_bgr555(SwsContext *c,
139 uint8_t **in, int *instrides,
140 int srcSliceY, int srcSliceH,
141 uint8_t **oplanes, int *outstrides)
142 {
143 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
144 outstrides, ff_bfin_yuv2rgb555_line, 0, 555);
145 }
146
147 static int bfin_yuv420_rgb24(SwsContext *c,
148 uint8_t **in, int *instrides,
149 int srcSliceY, int srcSliceH,
150 uint8_t **oplanes, int *outstrides)
151 {
152 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
153 outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
154 }
155
156 static int bfin_yuv420_bgr24(SwsContext *c,
157 uint8_t **in, int *instrides,
158 int srcSliceY, int srcSliceH,
159 uint8_t **oplanes, int *outstrides)
160 {
161 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
162 outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
163 }
164
165 static int bfin_yuv420_rgb565(SwsContext *c,
166 uint8_t **in, int *instrides,
167 int srcSliceY, int srcSliceH,
168 uint8_t **oplanes, int *outstrides)
169 {
170 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
171 outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
172 }
173
174 static int bfin_yuv420_bgr565(SwsContext *c,
175 uint8_t **in, int *instrides,
176 int srcSliceY, int srcSliceH,
177 uint8_t **oplanes, int *outstrides)
178 {
179 return core_yuv420_rgb(c, in, instrides, srcSliceY, srcSliceH, oplanes,
180 outstrides, ff_bfin_yuv2rgb565_line, 0, 565);
181 }
182
183
184 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c)
185 {
186 SwsFunc f;
187
188 switch(c->dstFormat) {
189 case PIX_FMT_RGB555: f = bfin_yuv420_rgb555; break;
190 case PIX_FMT_BGR555: f = bfin_yuv420_bgr555; break;
191 case PIX_FMT_RGB565: f = bfin_yuv420_rgb565; break;
192 case PIX_FMT_BGR565: f = bfin_yuv420_bgr565; break;
193 case PIX_FMT_RGB24: f = bfin_yuv420_rgb24; break;
194 case PIX_FMT_BGR24: f = bfin_yuv420_bgr24; break;
195 default:
196 return 0;
197 }
198
199 av_log(c, AV_LOG_INFO, "BlackFin accelerated color space converter %s\n",
200 sws_format_name (c->dstFormat));
201
202 return f;
203 }