lxdream 0.9.1| filename | src/video.h |
| changeset | 106:9048bac046c3 |
| prev | 103:9b9cfc5855e0 |
| author | nkeynes |
| date | Tue Mar 14 12:45:53 2006 +0000 (18 years ago) |
| permissions | -rw-r--r-- |
| last change | Move driver selection out to main at long last. Add video NULL driver for headless operation Make dcload exit() actually exit |
| view | annotate | diff | log | raw |
1 /**
2 * $Id: video.h,v 1.6 2006-03-14 12:45:50 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>
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
30 /**
31 * Supported colour formats. Note that ARGB4444 is only ever used for texture
32 * rendering (it's not valid for display purposes).
33 */
34 #define COLFMT_RGB565 1
35 #define COLFMT_RGB888 4
36 #define COLFMT_ARGB1555 0
37 #define COLFMT_ARGB8888 5
38 #define COLFMT_ARGB4444 2
39 #define COLFMT_YUV422 3 /* 8-bit YUV (texture source only) */
40 #define COLFMT_INDEX4 6 /* 4 bit indexed colour (texture source only) */
41 #define COLFMT_INDEX8 7 /* 8-bit indexed colour (texture source only) */
43 typedef struct video_buffer {
44 uint32_t hres;
45 uint32_t vres;
46 uint32_t rowstride;
47 int colour_format;
48 char *data;
49 } *video_buffer_t;
51 /**
52 * Core video driver - expected to directly support an OpenGL context
53 */
54 typedef struct video_driver {
55 char *name;
56 /**
57 * Initialize the driver. This is called only once at startup time, and
58 * is guaranteed to be called before any other methods.
59 * @return TRUE if the driver was successfully initialized, otherwise
60 * FALSE.
61 */
62 gboolean (*init_driver)(void);
64 /**
65 * Cleanly shutdown the driver. Normally only called at system shutdown
66 * time.
67 */
68 void (*shutdown_driver)(void);
70 /**
71 * Set the current display format to the specified values. This is
72 * called immediately prior to any display frame call where the
73 * parameters have changed from the previous frame
74 */
75 gboolean (*set_display_format)( uint32_t hres, uint32_t vres,
76 int colour_fmt );
78 /**
79 * Set the current rendering format to the specified values. This is
80 * called immediately prior to starting rendering of a frame where the
81 * parameters have changed from the previous frame. Note that the driver
82 * is not required to precisely support the requested colour format.
83 *
84 * This method is also responsible for setting up an appropriate GL
85 * context for the main engine to render into.
86 *
87 * @param hres The horizontal resolution (ie 640)
88 * @param vres The vertical resolution (ie 480)
89 * @param colour_fmt The colour format of the buffer (ie COLFMT_ARGB4444)
90 * @param texture Flag indicating that the frame being rendered is a
91 * texture, rather than a display frame.
92 */
93 gboolean (*set_render_format)( uint32_t hres, uint32_t vres,
94 int colour_fmt, gboolean texture );
95 /**
96 * Display a single frame using the supplied pixmap data. Is assumed to
97 * invalidate the current GL front buffer (but not the back buffer).
98 */
99 gboolean (*display_frame)( video_buffer_t buffer );
101 /**
102 * Display a single blanked frame using a fixed colour for the
103 * entire frame (specified in RGB888 format). Is assumed to invalidate
104 * the current GL front buffer (but not the back buffer).
105 */
106 gboolean (*display_blank_frame)( uint32_t rgb );
108 /**
109 * Promote the current render back buffer to the front buffer
110 */
111 void (*display_back_buffer)( void );
112 } *video_driver_t;
114 void video_open( void );
115 void video_update_frame( void );
116 void video_update_size( int, int, int );
118 extern uint32_t pvr2_frame_counter;
120 extern struct video_driver video_gtk_driver;
121 extern struct video_driver video_null_driver;
123 #ifdef __cplusplus
124 }
125 #endif
126 #endif
.