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 | ||
8fd0f4a8 | 46 | #if defined(__arm64__) || !defined(__ARM_NEON__) |
d57557c0 | 47 | |
4ea7de6a | 48 | void bgr888_to_rgb565(void *dst_, const void *src_, int bytes) |
49 | { | |
778ad9ce G |
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; | |
1318072a PC |
61 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
62 | *dst = (r1 << 24) | (g1 << 19) | (b1 << 13) | | |
63 | (r2 << 8) | (g2 << 3) | (b2 >> 3); | |
64 | #else | |
778ad9ce G |
65 | *dst = (r2 << 24) | (g2 << 19) | (b2 << 13) | |
66 | (r1 << 8) | (g1 << 3) | (b1 >> 3); | |
1318072a | 67 | #endif |
778ad9ce | 68 | } |
4ea7de6a | 69 | } |
70 | ||
8fd0f4a8 PC |
71 | #endif |
72 | ||
73 | #ifndef __ARM_NEON__ | |
a80ae4a0 | 74 | // TODO? |
00a5d459 | 75 | void rgb888_to_rgb565(void *dst, const void *src, int bytes) {} |
a80ae4a0 | 76 | void bgr888_to_rgb888(void *dst, const void *src, int bytes) {} |
a80ae4a0 | 77 | |
c9099d02 | 78 | #endif // __ARM_NEON__ |
79 | ||
80 | /* YUV stuff */ | |
81 | static int yuv_ry[32], yuv_gy[32], yuv_by[32]; | |
82 | static unsigned char yuv_u[32 * 2], yuv_v[32 * 2]; | |
83 | ||
84 | void bgr_to_uyvy_init(void) | |
85 | { | |
86 | int i, v; | |
87 | ||
88 | /* init yuv converter: | |
89 | y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0)); | |
90 | y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1)); | |
91 | u = (int)(8 * 0.565f * (b0 - y0)) + 128; | |
92 | v = (int)(8 * 0.713f * (r0 - y0)) + 128; | |
93 | */ | |
94 | for (i = 0; i < 32; i++) { | |
95 | yuv_ry[i] = (int)(0.299f * i * 65536.0f + 0.5f); | |
96 | yuv_gy[i] = (int)(0.587f * i * 65536.0f + 0.5f); | |
97 | yuv_by[i] = (int)(0.114f * i * 65536.0f + 0.5f); | |
98 | } | |
99 | for (i = -32; i < 32; i++) { | |
100 | v = (int)(8 * 0.565f * i) + 128; | |
101 | if (v < 0) | |
102 | v = 0; | |
103 | if (v > 255) | |
104 | v = 255; | |
105 | yuv_u[i + 32] = v; | |
106 | v = (int)(8 * 0.713f * i) + 128; | |
107 | if (v < 0) | |
108 | v = 0; | |
109 | if (v > 255) | |
110 | v = 255; | |
111 | yuv_v[i + 32] = v; | |
112 | } | |
113 | } | |
114 | ||
5b9aa749 | 115 | void rgb565_to_uyvy(void *d, const void *s, int pixels) |
116 | { | |
117 | unsigned int *dst = d; | |
118 | const unsigned short *src = s; | |
119 | const unsigned char *yu = yuv_u + 32; | |
120 | const unsigned char *yv = yuv_v + 32; | |
121 | int r0, g0, b0, r1, g1, b1; | |
122 | int y0, y1, u, v; | |
123 | ||
124 | for (; pixels > 0; src += 2, dst++, pixels -= 2) | |
125 | { | |
126 | r0 = (src[0] >> 11) & 0x1f; | |
127 | g0 = (src[0] >> 6) & 0x1f; | |
128 | b0 = src[0] & 0x1f; | |
129 | r1 = (src[1] >> 11) & 0x1f; | |
130 | g1 = (src[1] >> 6) & 0x1f; | |
131 | b1 = src[1] & 0x1f; | |
132 | y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16; | |
133 | y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16; | |
134 | u = yu[b0 - y0]; | |
135 | v = yv[r0 - y0]; | |
136 | // valid Y range seems to be 16..235 | |
137 | y0 = 16 + 219 * y0 / 31; | |
138 | y1 = 16 + 219 * y1 / 31; | |
139 | ||
140 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; | |
141 | } | |
142 | } | |
143 | ||
c9099d02 | 144 | void bgr555_to_uyvy(void *d, const void *s, int pixels) |
145 | { | |
146 | unsigned int *dst = d; | |
147 | const unsigned short *src = s; | |
148 | const unsigned char *yu = yuv_u + 32; | |
149 | const unsigned char *yv = yuv_v + 32; | |
150 | int r0, g0, b0, r1, g1, b1; | |
151 | int y0, y1, u, v; | |
152 | ||
153 | for (; pixels > 0; src += 2, dst++, pixels -= 2) | |
154 | { | |
155 | b0 = (src[0] >> 10) & 0x1f; | |
156 | g0 = (src[0] >> 5) & 0x1f; | |
157 | r0 = src[0] & 0x1f; | |
158 | b1 = (src[1] >> 10) & 0x1f; | |
159 | g1 = (src[1] >> 5) & 0x1f; | |
160 | r1 = src[1] & 0x1f; | |
161 | y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16; | |
162 | y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16; | |
163 | u = yu[b0 - y0]; | |
164 | v = yv[r0 - y0]; | |
c9099d02 | 165 | y0 = 16 + 219 * y0 / 31; |
166 | y1 = 16 + 219 * y1 / 31; | |
167 | ||
168 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; | |
169 | } | |
170 | } | |
171 | ||
172 | void bgr888_to_uyvy(void *d, const void *s, int pixels) | |
173 | { | |
174 | unsigned int *dst = d; | |
175 | const unsigned char *src8 = s; | |
176 | const unsigned char *yu = yuv_u + 32; | |
177 | const unsigned char *yv = yuv_v + 32; | |
178 | int r0, g0, b0, r1, g1, b1; | |
179 | int y0, y1, u, v; | |
180 | ||
181 | for (; pixels > 0; src8 += 3*2, dst++, pixels -= 2) | |
182 | { | |
183 | r0 = src8[0], g0 = src8[1], b0 = src8[2]; | |
184 | r1 = src8[3], g1 = src8[4], b1 = src8[5]; | |
185 | y0 = (r0 * 19595 + g0 * 38470 + b0 * 7471) >> 16; | |
186 | y1 = (r1 * 19595 + g1 * 38470 + b1 * 7471) >> 16; | |
187 | u = yu[(b0 - y0) / 8]; | |
188 | v = yv[(r0 - y0) / 8]; | |
189 | y0 = 16 + 219 * y0 / 255; | |
190 | y1 = 16 + 219 * y1 / 255; | |
191 | ||
192 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; | |
193 | } | |
194 | } |