2 * $Id: video.h,v 1.5 2006-03-13 12:39:03 nkeynes Exp $
4 * The PC side of the video support (responsible for actually displaying /
7 * Copyright (c) 2005 Nathan Keynes.
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.
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.
31 * Supported colour formats. Note that ARGB4444 is only ever used for texture
32 * rendering (it's not valid for display purposes).
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 {
52 * Core video driver - expected to directly support an OpenGL context
54 typedef struct video_driver {
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
62 gboolean (*init_driver)(void);
65 * Cleanly shutdown the driver. Normally only called at system shutdown
68 void (*shutdown_driver)(void);
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
75 gboolean (*set_display_format)( uint32_t hres, uint32_t vres,
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.
84 * This method is also responsible for setting up an appropriate GL
85 * context for the main engine to render into.
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.
93 gboolean (*set_render_format)( uint32_t hres, uint32_t vres,
94 int colour_fmt, gboolean texture );
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).
99 gboolean (*display_frame)( video_buffer_t buffer );
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).
106 gboolean (*display_blank_frame)( uint32_t rgb );
109 * Promote the current render back buffer to the front buffer
111 void (*display_back_buffer)( void );
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;
.