lxdream 0.9.1| filename | src/display.h |
| changeset | 352:f0df7a6d4703 |
| prev | 335:fb890e1814c0 |
| next | 370:3131ba1440fc |
| author | nkeynes |
| date | Sun Feb 11 10:09:32 2007 +0000 (16 years ago) |
| permissions | -rw-r--r-- |
| last change | Bug 27: Implement opengl framebuffer objects Rewrite much of the final video output stage. Now uses generic "render buffers", implemented on GL using framebuffer objects + textures. |
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1 /**
2 * $Id: display.h,v 1.5 2007-02-11 10:09:32 nkeynes Exp $
3 *
4 * The PC side of the video support (responsible for actually displaying /
5 * rendering frames)
6 *
7 * Copyright (c) 2005 Nathan Keynes.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program 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
17 * GNU General Public License for more details.
18 */
20 #ifndef dream_video_H
21 #define dream_video_H
23 #include "mem.h"
24 #include <stdint.h>
25 #include <glib.h>
26 #include <GL/gl.h>
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
32 /**
33 * Supported colour formats. Note that ARGB4444 is only ever used for texture
34 * rendering (it's not valid for display purposes).
35 */
36 #define COLFMT_ARGB1555 0
37 #define COLFMT_RGB565 1
38 #define COLFMT_ARGB4444 2
39 #define COLFMT_YUV422 3 /* 8-bit YUV (texture source only) */
40 #define COLFMT_RGB888 4 /* 24-bit RGB */
41 #define COLFMT_ARGB8888 5
42 #define COLFMT_INDEX4 6 /* 4 bit indexed colour (texture source only) */
43 #define COLFMT_INDEX8 7 /* 8-bit indexed colour (texture source only) */
44 #define COLFMT_RGB0888 8 /* 32-bit RGB */
46 struct colour_format {
47 GLint type, format, int_format;
48 int bpp;
49 };
50 extern struct colour_format colour_formats[];
52 extern int colour_format_bytes[];
54 /**
55 * Structure to hold pixel data held in GL buffers.
56 */
57 typedef struct render_buffer {
58 uint32_t width;
59 uint32_t height;
60 uint32_t rowstride;
61 int colour_format;
62 sh4addr_t address; /* Address buffer was rendered to, or -1 for unrendered */
63 uint32_t size; /* Size of buffer in bytes, must be width*height*bpp */
64 int scale;
65 int buf_id; /* driver-specific buffer id, if applicable */
66 gboolean flushed; /* True if the buffer has been flushed to vram */
67 } *render_buffer_t;
69 /**
70 * Structure to hold pixel data stored in pvr2 vram, as opposed to data in
71 * GL buffers.
72 */
73 typedef struct frame_buffer {
74 uint32_t width;
75 uint32_t height;
76 uint32_t rowstride;
77 int colour_format;
78 sh4addr_t address;
79 uint32_t size; /* Size of buffer in bytes, must be width*height*bpp */
80 char *data;
81 } * frame_buffer_t;
83 /**
84 * Core video driver - exports function to setup a GL context, as well as handle
85 * keyboard input and display resultant output.
86 */
87 typedef struct display_driver {
88 char *name;
89 /**
90 * Initialize the driver. This is called only once at startup time, and
91 * is guaranteed to be called before any other methods.
92 * @return TRUE if the driver was successfully initialized, otherwise
93 * FALSE.
94 */
95 gboolean (*init_driver)(void);
97 /**
98 * Cleanly shutdown the driver. Normally only called at system shutdown
99 * time.
100 */
101 void (*shutdown_driver)(void);
103 /**
104 * Given a particular keysym, return the keycode associated with it.
105 * @param keysym The keysym to be resolved, ie "Tab"
106 * @return the display-specific keycode, or 0 if the keysym cannot
107 * be resolved.
108 */
109 uint16_t (*resolve_keysym)( const gchar *keysym );
111 /**
112 * Create a render target with the given width and height.
113 */
114 render_buffer_t (*create_render_buffer)( uint32_t width, uint32_t height );
116 /**
117 * Destroy the specified render buffer and release any associated
118 * resources.
119 */
120 void (*destroy_render_buffer)( render_buffer_t buffer );
122 /**
123 * Set the current rendering target to the specified buffer.
124 */
125 gboolean (*set_render_target)( render_buffer_t buffer );
127 /**
128 * Display a single frame using the supplied pixmap data.
129 */
130 gboolean (*display_frame_buffer)( frame_buffer_t buffer );
132 /**
133 * Display a single frame using a previously rendered GL buffer.
134 */
135 gboolean (*display_render_buffer)( render_buffer_t buffer );
137 /**
138 * Display a single blanked frame using a fixed colour for the
139 * entire frame (specified in RGB888 format).
140 */
141 gboolean (*display_blank)( uint32_t rgb );
143 /**
144 * Copy the image data from the GL buffer to the target memory buffer,
145 * using the format etc from the buffer. This may force a glFinish()
146 * but does not invalidate the buffer.
147 */
148 gboolean (*read_render_buffer)( render_buffer_t buffer, char *target );
150 } *display_driver_t;
152 void video_open( void );
153 void video_update_frame( void );
154 void video_update_size( int, int, int );
156 extern uint32_t pvr2_frame_counter;
158 extern display_driver_t display_driver;
160 extern struct display_driver display_gtk_driver;
161 extern struct display_driver display_null_driver;
163 /****************** Input methods **********************/
165 typedef void (*input_key_callback_t)( void *data, uint32_t value, gboolean isKeyDown );
167 gboolean input_register_key( const gchar *keysym, input_key_callback_t callback,
168 void *data, uint32_t value );
170 void input_unregister_key( const gchar *keysym );
172 gboolean input_is_key_valid( const gchar *keysym );
174 gboolean input_is_key_registered( const gchar *keysym );
176 void input_event_keydown( uint16_t keycode );
178 void input_event_keyup( uint16_t keycode );
182 #ifdef __cplusplus
183 }
184 #endif
185 #endif
.