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1 | /* |
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2 | * video output handling using plugin_lib |
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3 | * (C) GraÅžvydas "notaz" Ignotas, 2011 |
4 | * |
5 | * This work is licensed under the terms of any of these licenses |
6 | * (at your option): |
7 | * - GNU GPL, version 2 or later. |
8 | * - GNU LGPL, version 2.1 or later. |
9 | * See the COPYING file in the top-level directory. |
10 | */ |
11 | |
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12 | #include <string.h> |
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13 | #include "gpu.h" |
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14 | #include "cspace.h" |
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15 | #include "../../frontend/plugin_lib.h" |
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16 | |
17 | static const struct rearmed_cbs *cbs; |
18 | static void *screen_buf; |
19 | |
20 | int vout_init(void) |
21 | { |
22 | return 0; |
23 | } |
24 | |
25 | int vout_finish(void) |
26 | { |
27 | return 0; |
28 | } |
29 | |
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30 | static void check_mode_change(void) |
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31 | { |
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32 | static uint32_t old_status; |
33 | static int old_h; |
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34 | int w = gpu.screen.hres; |
35 | int h = gpu.screen.h; |
36 | |
37 | gpu.state.enhancement_active = |
38 | gpu.enhancement_bufer != NULL && gpu.state.enhancement_enable |
39 | && w <= 512 && h <= 256 && !gpu.status.rgb24; |
40 | |
41 | if (gpu.state.enhancement_active) { |
42 | w *= 2; |
43 | h *= 2; |
44 | } |
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45 | |
46 | // width|rgb24 change? |
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47 | if ((gpu.status.reg ^ old_status) & ((7<<16)|(1<<21)) || h != old_h) |
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48 | { |
49 | old_status = gpu.status.reg; |
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50 | old_h = h; |
51 | |
52 | screen_buf = cbs->pl_vout_set_mode(w, h, |
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53 | (gpu.status.rgb24 && !cbs->only_16bpp) ? 24 : 16); |
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54 | } |
55 | } |
56 | |
57 | static void blit(void) |
58 | { |
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59 | int x = gpu.screen.x & ~1; // alignment needed by blitter |
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60 | int y = gpu.screen.y; |
61 | int w = gpu.screen.w; |
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62 | int h = gpu.screen.h; |
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63 | uint16_t *vram = gpu.vram; |
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64 | int stride = gpu.screen.hres; |
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65 | int vram_stride = 1024; |
66 | int vram_mask = 1024 * 512 - 1; |
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67 | int fb_offs, doffs; |
68 | uint8_t *dest; |
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69 | |
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70 | dest = (uint8_t *)screen_buf; |
e929dec5 |
71 | if (dest == NULL || w == 0 || stride == 0) |
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72 | return; |
73 | |
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74 | if (gpu.state.enhancement_active) { |
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75 | // this layout is gpu_neon specific.. |
76 | vram = gpu.enhancement_bufer + |
77 | (x + 8) / stride * 1024 * 1024; |
0b02eb77 |
78 | x *= 2; |
79 | y *= 2; |
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80 | w = w * 2; |
81 | h = h * 2; |
0b02eb77 |
82 | stride *= 2; |
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83 | vram_mask = 1024 * 1024 - 1; |
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84 | } |
85 | fb_offs = y * vram_stride + x; |
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86 | |
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87 | // only do centering, at least for now |
88 | doffs = (stride - w) / 2 & ~1; |
89 | |
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90 | if (gpu.status.rgb24) |
91 | { |
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92 | if (cbs->only_16bpp) { |
93 | dest += doffs * 2; |
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94 | for (; h-- > 0; dest += stride * 2, fb_offs += vram_stride) |
4ea7de6a |
95 | { |
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96 | fb_offs &= vram_mask; |
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97 | bgr888_to_rgb565(dest, vram + fb_offs, w * 3); |
98 | } |
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99 | } |
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100 | else { |
101 | dest += (doffs / 8) * 24; |
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102 | for (; h-- > 0; dest += stride * 3, fb_offs += vram_stride) |
4ea7de6a |
103 | { |
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104 | fb_offs &= vram_mask; |
4ea7de6a |
105 | bgr888_to_rgb888(dest, vram + fb_offs, w * 3); |
106 | } |
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107 | } |
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108 | } |
109 | else |
110 | { |
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111 | dest += doffs * 2; |
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112 | for (; h-- > 0; dest += stride * 2, fb_offs += vram_stride) |
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113 | { |
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114 | fb_offs &= vram_mask; |
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115 | bgr555_to_rgb565(dest, vram + fb_offs, w * 2); |
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116 | } |
117 | } |
118 | |
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119 | screen_buf = cbs->pl_vout_flip(); |
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120 | } |
121 | |
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122 | void vout_update(void) |
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123 | { |
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124 | check_mode_change(); |
125 | if (cbs->pl_vout_raw_flip) |
126 | cbs->pl_vout_raw_flip(gpu.screen.x, gpu.screen.y); |
127 | else |
128 | blit(); |
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129 | } |
130 | |
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131 | void vout_blank(void) |
132 | { |
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133 | gpu.state.enhancement_active = 0; |
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134 | check_mode_change(); |
135 | if (cbs->pl_vout_raw_flip == NULL) { |
136 | int bytespp = gpu.status.rgb24 ? 3 : 2; |
137 | memset(screen_buf, 0, gpu.screen.hres * gpu.screen.h * bytespp); |
138 | screen_buf = cbs->pl_vout_flip(); |
139 | } |
140 | } |
141 | |
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142 | long GPUopen(void **unused) |
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143 | { |
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144 | gpu.frameskip.active = 0; |
145 | gpu.frameskip.frame_ready = 1; |
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146 | |
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147 | cbs->pl_vout_open(); |
148 | screen_buf = cbs->pl_vout_flip(); |
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149 | return 0; |
150 | } |
151 | |
152 | long GPUclose(void) |
153 | { |
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154 | cbs->pl_vout_close(); |
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155 | return 0; |
156 | } |
157 | |
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158 | void vout_set_config(const struct rearmed_cbs *cbs_) |
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159 | { |
160 | cbs = cbs_; |
161 | } |
162 | |
163 | // vim:shiftwidth=2:expandtab |