Commit | Line | Data |
---|---|---|
c9099d02 | 1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2011,2012 | |
3 | * | |
4 | * This work is licensed under the terms of any of these licenses | |
5 | * (at your option): | |
6 | * - GNU GPL, version 2 or later. | |
7 | * - GNU LGPL, version 2.1 or later. | |
8 | * See the COPYING file in the top-level directory. | |
9 | */ | |
10 | ||
a80ae4a0 | 11 | #include "cspace.h" |
12 | ||
4ea7de6a | 13 | /* |
14 | * note: these are intended for testing and should be avoided | |
15 | * in favor of NEON version or platform-specific conversion | |
16 | */ | |
17 | ||
1318072a PC |
18 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
19 | #define SWAP16(x) __builtin_bswap16(x) | |
20 | #define LE16TOHx2(x) ((SWAP16((x) >> 16) << 16) | SWAP16(x)) | |
21 | #else | |
22 | #define LE16TOHx2(x) (x) | |
23 | #endif | |
24 | ||
d57557c0 | 25 | #ifndef __arm__ |
c9099d02 | 26 | |
55b0eeea | 27 | void bgr555_to_rgb565(void *dst_, const void *src_, int bytes) |
28 | { | |
1318072a PC |
29 | const unsigned int *src = src_; |
30 | unsigned int *dst = dst_; | |
31 | unsigned int x, p, r, g, b; | |
32 | ||
33 | for (x = 0; x < bytes / 4; x++) { | |
34 | p = LE16TOHx2(src[x]); | |
35 | ||
36 | r = (p & 0x001f001f) << 11; | |
37 | g = (p & 0x03e003e0) << 1; | |
38 | b = (p & 0x7c007c00) >> 10; | |
39 | ||
40 | dst[x] = r | g | b; | |
41 | } | |
55b0eeea | 42 | } |
43 | ||
d57557c0 | 44 | #endif |
45 | ||
778ad9ce | 46 | #ifdef __arm64__ |
8fb0f7c5 G |
47 | |
48 | void bgr888_to_rgb565(void *dst_, const void *src_, int bytes) | |
49 | { | |
50 | const unsigned char *src = src_; | |
51 | unsigned int *dst = dst_; | |
52 | unsigned int r1, g1, b1, r2, g2, b2; | |
53 | ||
54 | for (; bytes >= 6; bytes -= 6, src += 6, dst++) { | |
55 | r1 = src[0] & 0xf8; | |
56 | g1 = src[1] & 0xfc; | |
57 | b1 = src[2] & 0xf8; | |
58 | r2 = src[3] & 0xf8; | |
59 | g2 = src[4] & 0xfc; | |
60 | b2 = src[5] & 0xf8; | |
61 | *dst = (r2 << 24) | (g2 << 19) | (b2 << 13) | | |
62 | (r1 << 8) | (g1 << 3) | (b1 >> 3); | |
63 | } | |
64 | } | |
65 | ||
66 | #endif | |
67 | ||
d57557c0 | 68 | #ifndef __ARM_NEON__ |
69 | ||
4ea7de6a | 70 | void bgr888_to_rgb565(void *dst_, const void *src_, int bytes) |
71 | { | |
778ad9ce G |
72 | const unsigned char *src = src_; |
73 | unsigned int *dst = dst_; | |
74 | unsigned int r1, g1, b1, r2, g2, b2; | |
75 | ||
76 | for (; bytes >= 6; bytes -= 6, src += 6, dst++) { | |
77 | r1 = src[0] & 0xf8; | |
78 | g1 = src[1] & 0xfc; | |
79 | b1 = src[2] & 0xf8; | |
80 | r2 = src[3] & 0xf8; | |
81 | g2 = src[4] & 0xfc; | |
82 | b2 = src[5] & 0xf8; | |
1318072a PC |
83 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
84 | *dst = (r1 << 24) | (g1 << 19) | (b1 << 13) | | |
85 | (r2 << 8) | (g2 << 3) | (b2 >> 3); | |
86 | #else | |
778ad9ce G |
87 | *dst = (r2 << 24) | (g2 << 19) | (b2 << 13) | |
88 | (r1 << 8) | (g1 << 3) | (b1 >> 3); | |
1318072a | 89 | #endif |
778ad9ce | 90 | } |
4ea7de6a | 91 | } |
92 | ||
a80ae4a0 | 93 | // TODO? |
00a5d459 | 94 | void rgb888_to_rgb565(void *dst, const void *src, int bytes) {} |
a80ae4a0 | 95 | void bgr888_to_rgb888(void *dst, const void *src, int bytes) {} |
a80ae4a0 | 96 | |
c9099d02 | 97 | #endif // __ARM_NEON__ |
98 | ||
99 | /* YUV stuff */ | |
100 | static int yuv_ry[32], yuv_gy[32], yuv_by[32]; | |
101 | static unsigned char yuv_u[32 * 2], yuv_v[32 * 2]; | |
102 | ||
103 | void bgr_to_uyvy_init(void) | |
104 | { | |
105 | int i, v; | |
106 | ||
107 | /* init yuv converter: | |
108 | y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0)); | |
109 | y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1)); | |
110 | u = (int)(8 * 0.565f * (b0 - y0)) + 128; | |
111 | v = (int)(8 * 0.713f * (r0 - y0)) + 128; | |
112 | */ | |
113 | for (i = 0; i < 32; i++) { | |
114 | yuv_ry[i] = (int)(0.299f * i * 65536.0f + 0.5f); | |
115 | yuv_gy[i] = (int)(0.587f * i * 65536.0f + 0.5f); | |
116 | yuv_by[i] = (int)(0.114f * i * 65536.0f + 0.5f); | |
117 | } | |
118 | for (i = -32; i < 32; i++) { | |
119 | v = (int)(8 * 0.565f * i) + 128; | |
120 | if (v < 0) | |
121 | v = 0; | |
122 | if (v > 255) | |
123 | v = 255; | |
124 | yuv_u[i + 32] = v; | |
125 | v = (int)(8 * 0.713f * i) + 128; | |
126 | if (v < 0) | |
127 | v = 0; | |
128 | if (v > 255) | |
129 | v = 255; | |
130 | yuv_v[i + 32] = v; | |
131 | } | |
132 | } | |
133 | ||
5b9aa749 | 134 | void rgb565_to_uyvy(void *d, const void *s, int pixels) |
135 | { | |
136 | unsigned int *dst = d; | |
137 | const unsigned short *src = s; | |
138 | const unsigned char *yu = yuv_u + 32; | |
139 | const unsigned char *yv = yuv_v + 32; | |
140 | int r0, g0, b0, r1, g1, b1; | |
141 | int y0, y1, u, v; | |
142 | ||
143 | for (; pixels > 0; src += 2, dst++, pixels -= 2) | |
144 | { | |
145 | r0 = (src[0] >> 11) & 0x1f; | |
146 | g0 = (src[0] >> 6) & 0x1f; | |
147 | b0 = src[0] & 0x1f; | |
148 | r1 = (src[1] >> 11) & 0x1f; | |
149 | g1 = (src[1] >> 6) & 0x1f; | |
150 | b1 = src[1] & 0x1f; | |
151 | y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16; | |
152 | y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16; | |
153 | u = yu[b0 - y0]; | |
154 | v = yv[r0 - y0]; | |
155 | // valid Y range seems to be 16..235 | |
156 | y0 = 16 + 219 * y0 / 31; | |
157 | y1 = 16 + 219 * y1 / 31; | |
158 | ||
159 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; | |
160 | } | |
161 | } | |
162 | ||
c9099d02 | 163 | void bgr555_to_uyvy(void *d, const void *s, int pixels) |
164 | { | |
165 | unsigned int *dst = d; | |
166 | const unsigned short *src = s; | |
167 | const unsigned char *yu = yuv_u + 32; | |
168 | const unsigned char *yv = yuv_v + 32; | |
169 | int r0, g0, b0, r1, g1, b1; | |
170 | int y0, y1, u, v; | |
171 | ||
172 | for (; pixels > 0; src += 2, dst++, pixels -= 2) | |
173 | { | |
174 | b0 = (src[0] >> 10) & 0x1f; | |
175 | g0 = (src[0] >> 5) & 0x1f; | |
176 | r0 = src[0] & 0x1f; | |
177 | b1 = (src[1] >> 10) & 0x1f; | |
178 | g1 = (src[1] >> 5) & 0x1f; | |
179 | r1 = src[1] & 0x1f; | |
180 | y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16; | |
181 | y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16; | |
182 | u = yu[b0 - y0]; | |
183 | v = yv[r0 - y0]; | |
c9099d02 | 184 | y0 = 16 + 219 * y0 / 31; |
185 | y1 = 16 + 219 * y1 / 31; | |
186 | ||
187 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; | |
188 | } | |
189 | } | |
190 | ||
191 | void bgr888_to_uyvy(void *d, const void *s, int pixels) | |
192 | { | |
193 | unsigned int *dst = d; | |
194 | const unsigned char *src8 = s; | |
195 | const unsigned char *yu = yuv_u + 32; | |
196 | const unsigned char *yv = yuv_v + 32; | |
197 | int r0, g0, b0, r1, g1, b1; | |
198 | int y0, y1, u, v; | |
199 | ||
200 | for (; pixels > 0; src8 += 3*2, dst++, pixels -= 2) | |
201 | { | |
202 | r0 = src8[0], g0 = src8[1], b0 = src8[2]; | |
203 | r1 = src8[3], g1 = src8[4], b1 = src8[5]; | |
204 | y0 = (r0 * 19595 + g0 * 38470 + b0 * 7471) >> 16; | |
205 | y1 = (r1 * 19595 + g1 * 38470 + b1 * 7471) >> 16; | |
206 | u = yu[(b0 - y0) / 8]; | |
207 | v = yv[(r0 - y0) / 8]; | |
208 | y0 = 16 + 219 * y0 / 255; | |
209 | y1 = 16 + 219 * y1 / 255; | |
210 | ||
211 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; | |
212 | } | |
213 | } |