2 * video output handling using plugin_lib
3 * (C) GraÅžvydas "notaz" Ignotas, 2011
5 * This work is licensed under the terms of any of these licenses
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.
15 #include "../../frontend/plugin_lib.h"
17 static const struct rearmed_cbs *cbs;
18 static void *screen_buf;
30 static void check_mode_change(void)
32 static uint32_t old_status;
34 int w = gpu.screen.hres;
37 gpu.state.enhancement_active =
38 gpu.enhancement_bufer != NULL && gpu.state.enhancement_enable
39 && w <= 512 && h <= 256 && !gpu.status.rgb24;
41 if (gpu.state.enhancement_active) {
46 // width|rgb24 change?
47 if ((gpu.status.reg ^ old_status) & ((7<<16)|(1<<21)) || h != old_h)
49 old_status = gpu.status.reg;
52 screen_buf = cbs->pl_vout_set_mode(w, h,
53 (gpu.status.rgb24 && !cbs->only_16bpp) ? 24 : 16);
57 static void blit(void)
59 int x = gpu.screen.x & ~1; // alignment needed by blitter
63 uint16_t *vram = gpu.vram;
64 int stride = gpu.screen.hres;
65 int vram_stride = 1024;
66 int vram_mask = 1024 * 512 - 1;
70 dest = (uint8_t *)screen_buf;
74 if (gpu.state.enhancement_active) {
75 vram = gpu.enhancement_bufer;
82 vram_mask = 2048 * 1024 - 1;
84 fb_offs = y * vram_stride + x;
86 // only do centering, at least for now
87 doffs = (stride - w) / 2 & ~1;
91 if (cbs->only_16bpp) {
93 for (; h-- > 0; dest += stride * 2, fb_offs += vram_stride)
96 bgr888_to_rgb565(dest, vram + fb_offs, w * 3);
100 dest += (doffs / 8) * 24;
101 for (; h-- > 0; dest += stride * 3, fb_offs += vram_stride)
103 fb_offs &= vram_mask;
104 bgr888_to_rgb888(dest, vram + fb_offs, w * 3);
111 for (; h-- > 0; dest += stride * 2, fb_offs += vram_stride)
113 fb_offs &= vram_mask;
114 bgr555_to_rgb565(dest, vram + fb_offs, w * 2);
118 screen_buf = cbs->pl_vout_flip();
121 void vout_update(void)
124 if (cbs->pl_vout_raw_flip)
125 cbs->pl_vout_raw_flip(gpu.screen.x, gpu.screen.y);
130 void vout_blank(void)
133 if (cbs->pl_vout_raw_flip == NULL) {
134 int bytespp = gpu.status.rgb24 ? 3 : 2;
135 memset(screen_buf, 0, gpu.screen.hres * gpu.screen.h * bytespp);
136 screen_buf = cbs->pl_vout_flip();
140 long GPUopen(void **unused)
142 gpu.frameskip.active = 0;
143 gpu.frameskip.frame_ready = 1;
146 screen_buf = cbs->pl_vout_flip();
152 cbs->pl_vout_close();
156 void vout_set_config(const struct rearmed_cbs *cbs_)
161 // vim:shiftwidth=2:expandtab