filename | src/display.h |
changeset | 531:f0fee3ba71d1 |
prev | 502:c4ecae2b1b5e |
next | 540:a3767018a96d |
author | nkeynes |
date | Mon Nov 19 08:47:39 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Move name-to-driver mappings to display.c and audio.c respectively Move responsibility for invoking texcache_gl_init() to the driver |
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1 /**
2 * $Id: display.h,v 1.12 2007-11-08 11:54:16 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 <stdint.h>
24 #include <glib.h>
25 #include <GL/gl.h>
26 #include "lxdream.h"
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
32 /**
33 * Supported colour formats. Note that BGRA4444 is only ever used for texture
34 * rendering (it's not valid for display purposes).
35 */
36 #define COLFMT_BGRA1555 0
37 #define COLFMT_RGB565 1
38 #define COLFMT_BGRA4444 2
39 #define COLFMT_YUV422 3 /* 8-bit YUV (texture source only) */
40 #define COLFMT_BGR888 4 /* 24-bit BGR */
41 #define COLFMT_BGRA8888 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_BGR0888 8 /* 32-bit BGR */
45 #define COLFMT_RGB888 9 /* 24-bit RGB (ie GL native) */
47 struct colour_format {
48 GLint type, format, int_format;
49 int bpp;
50 };
51 extern struct colour_format colour_formats[];
53 extern int colour_format_bytes[];
55 /**
56 * Structure to hold pixel data held in GL buffers.
57 */
58 struct render_buffer {
59 uint32_t width;
60 uint32_t height;
61 uint32_t rowstride;
62 int colour_format;
63 sh4addr_t address; /* Address buffer was rendered to, or -1 for unrendered */
64 uint32_t size; /* Size of buffer in bytes, must be width*height*bpp */
65 gboolean inverted;/* True if the buffer is upside down */
66 int scale;
67 unsigned int buf_id; /* driver-specific buffer id, if applicable */
68 gboolean flushed; /* True if the buffer has been flushed to vram */
69 };
71 /**
72 * Structure to hold pixel data stored in pvr2 vram, as opposed to data in
73 * GL buffers.
74 */
75 struct frame_buffer {
76 uint32_t width;
77 uint32_t height;
78 uint32_t rowstride;
79 int colour_format;
80 sh4addr_t address;
81 uint32_t size; /* Size of buffer in bytes, must be width*height*bpp */
82 gboolean inverted;/* True if the buffer is upside down */
83 unsigned char *data;
84 };
86 /**
87 * Core video driver - exports function to setup a GL context, as well as handle
88 * keyboard input and display resultant output.
89 */
90 typedef struct display_driver {
91 char *name;
92 /**
93 * Initialize the driver. This is called only once at startup time, and
94 * is guaranteed to be called before any other methods.
95 * @return TRUE if the driver was successfully initialized, otherwise
96 * FALSE.
97 */
98 gboolean (*init_driver)(void);
100 /**
101 * Cleanly shutdown the driver. Normally only called at system shutdown
102 * time.
103 */
104 void (*shutdown_driver)(void);
106 /**
107 * Given a particular keysym, return the keycode associated with it.
108 * @param keysym The keysym to be resolved, ie "Tab"
109 * @return the display-specific keycode, or 0 if the keysym cannot
110 * be resolved.
111 */
112 uint16_t (*resolve_keysym)( const gchar *keysym );
114 /**
115 * Create a render target with the given width and height.
116 */
117 render_buffer_t (*create_render_buffer)( uint32_t width, uint32_t height );
119 /**
120 * Destroy the specified render buffer and release any associated
121 * resources.
122 */
123 void (*destroy_render_buffer)( render_buffer_t buffer );
125 /**
126 * Set the current rendering target to the specified buffer.
127 */
128 gboolean (*set_render_target)( render_buffer_t buffer );
130 /**
131 * Load the supplied frame buffer into the given render buffer.
132 * Included here to allow driver-specific optimizations.
133 */
134 void (*load_frame_buffer)( frame_buffer_t frame, render_buffer_t render );
136 /**
137 * Display a single frame using a previously rendered GL buffer.
138 */
139 gboolean (*display_render_buffer)( render_buffer_t buffer );
141 /**
142 * Display a single blanked frame using a fixed colour for the
143 * entire frame (specified in BGR888 format).
144 */
145 gboolean (*display_blank)( uint32_t rgb );
147 /**
148 * Copy the image data from the GL buffer to the target memory buffer,
149 * using the format etc from the buffer. This may force a glFinish()
150 * but does not invalidate the buffer.
151 * @param target buffer to fill with image data, which must be large enough
152 * to accomodate the image.
153 * @param buffer Render buffer to read from.
154 * @param rowstride rowstride of the target data
155 * @param format colour format to output the data in.
156 */
157 gboolean (*read_render_buffer)( unsigned char *target, render_buffer_t buffer,
158 int rowstride, int format );
160 } *display_driver_t;
162 display_driver_t get_display_driver_by_name( const char *name );
163 gboolean display_set_driver( display_driver_t driver );
165 extern uint32_t pvr2_frame_counter;
167 extern display_driver_t display_driver;
169 extern struct display_driver display_gtk_driver;
170 extern struct display_driver display_null_driver;
172 /****************** Input methods **********************/
174 typedef void (*input_key_callback_t)( void *data, uint32_t value, gboolean isKeyDown );
176 gboolean input_register_key( const gchar *keysym, input_key_callback_t callback,
177 void *data, uint32_t value );
179 void input_unregister_key( const gchar *keysym, input_key_callback_t callback,
180 void *data, uint32_t value );
182 gboolean input_is_key_valid( const gchar *keysym );
184 gboolean input_is_key_registered( const gchar *keysym );
186 void input_event_keydown( uint16_t keycode );
188 void input_event_keyup( uint16_t keycode );
192 #ifdef __cplusplus
193 }
194 #endif
195 #endif
.