lxdream.org :: lxdream/src/display.c r431:248dd77a9e44

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     1 /**

     2  * $Id: display.c,v 1.10 2007-10-09 08:12:29 nkeynes Exp $

     3  *

     4  * Generic support for keyboard and other input sources. The active display

     5  * driver is expected to deliver events here, where they're translated and

     6  * passed to the appropriate dreamcast controllers (if any).

     7  *

     8  * Copyright (c) 2005 Nathan Keynes.

     9  *

    10  * This program is free software; you can redistribute it and/or modify

    11  * it under the terms of the GNU General Public License as published by

    12  * the Free Software Foundation; either version 2 of the License, or

    13  * (at your option) any later version.

    14  *

    15  * This program is distributed in the hope that it will be useful,

    16  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    18  * GNU General Public License for more details.

    19  */

    21 #include <stdint.h>

    22 #include <assert.h>

    23 #include "dream.h"

    24 #include "display.h"

    25 #include "pvr2/pvr2.h"

    27 typedef struct keymap_entry {

    28     uint16_t keycode;

    29     input_key_callback_t callback;

    30     void *data;

    31     uint32_t value;

    32 } *keymap_entry_t;

    34 /**

    35  * Colour format information

    36  */

    37 struct colour_format colour_formats[] = {

    38     { GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_BGRA, GL_RGB5_A1, 2 },

    39     { GL_UNSIGNED_SHORT_5_6_5, GL_RGB, GL_RGB5, 2 },

    40     { GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_BGRA, GL_RGBA4, 2 },

    41     { GL_UNSIGNED_INT_8_8_8_8_REV, GL_BGRA, GL_RGBA8, 4 }, /* YUV decoded to ARGB8888 */

    42     { GL_UNSIGNED_BYTE, GL_BGR, GL_RGB, 3 },

    43     { GL_UNSIGNED_INT_8_8_8_8_REV, GL_BGRA, GL_RGBA8, 4 },

    45 };

    47 /**

    48  * FIXME: make this more memory efficient

    49  */

    50 struct keymap_entry *keymap[65536];

    53 static struct keymap_entry *input_create_key( uint16_t keycode )

    54 {

    55     struct keymap_entry *key = keymap[ keycode ];

    56     if( key == NULL ) {

    57 	key = malloc( sizeof( struct keymap_entry ) );

    58 	assert( key != NULL );

    59 	keymap[ keycode ] = key;

    60 	key->keycode = keycode;

    61     }

    62     return key;

    63 }

    65 static void input_delete_key( uint16_t keycode )

    66 {

    67     struct keymap_entry *key = keymap[keycode];

    68     if( key != NULL ) {

    69 	free( key );

    70 	keymap[keycode] = NULL;

    71     }

    72 }

    74 static struct keymap_entry *input_get_key( uint16_t keycode )

    75 {

    76     return keymap[ keycode ];

    77 }

    79 gboolean input_register_key( const gchar *keysym, input_key_callback_t callback,

    80 			     void *data, uint32_t value )

    81 {

    82     if( display_driver == NULL || keysym == NULL || display_driver->resolve_keysym == NULL )

    83 	return FALSE; /* No display driver */

    84     gchar **strv = g_strsplit(keysym, ",", 16);

    85     gchar **s = strv;

    86     while( *s != NULL ) {

    87 	uint16_t keycode = display_driver->resolve_keysym(g_strstrip(*s));

    88 	if( keycode == 0 )

    89 	    return FALSE; /* Invalid keysym */

    91 	struct keymap_entry *key = input_create_key( keycode );

    92 	key->callback = callback;

    93 	key->data = data;

    94 	key->value = value;

    95 	s++;

    96     }

    97     g_strfreev(strv);

    98     return TRUE;

    99 }

   101 void input_unregister_key( const gchar *keysym )

   102 {

   103     if( display_driver == NULL || keysym == NULL )

   104 	return;

   105     uint16_t keycode = display_driver->resolve_keysym(keysym);

   106     if( keycode == 0 )

   107 	return;

   108     input_delete_key( keycode );

   109 }

   112 gboolean input_is_key_valid( const gchar *keysym )

   113 {

   114     if( display_driver == NULL )

   115 	return FALSE; /* No display driver */

   116     return display_driver->resolve_keysym(keysym) != 0;

   117 }

   119 gboolean input_is_key_registered( const gchar *keysym )

   120 {

   121     if( display_driver == NULL )

   122 	return FALSE;

   123     uint16_t keycode = display_driver->resolve_keysym(keysym);

   124     if( keycode == 0 )

   125 	return FALSE;

   126     return input_get_key( keycode ) != NULL;

   127 }

   129 void input_event_keydown( uint16_t keycode )

   130 {

   131     struct keymap_entry *key = input_get_key(keycode);

   132     if( key != NULL ) {

   133 	key->callback( key->data, key->value, TRUE );

   134     }

   135 }

   137 void input_event_keyup( uint16_t keycode )

   138 {

   139     struct keymap_entry *key = input_get_key(keycode);

   140     if( key != NULL ) {

   141 	key->callback( key->data, key->value, FALSE );

   142     }

   143 }

   147 gboolean display_set_driver( display_driver_t driver )

   148 {

   149     gboolean rv = TRUE;

   150     if( display_driver != NULL && display_driver->shutdown_driver != NULL )

   151 	display_driver->shutdown_driver();

   153     display_driver = driver;

   154     if( driver->init_driver != NULL )

   155 	rv = driver->init_driver();

   156     if( rv ) {

   157 	texcache_gl_init();

   158     }

   159     return rv;

   160 }