kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
86 wiersze
2.6 KiB
C
86 wiersze
2.6 KiB
C
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#ifndef _SYSTEM_H_
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#define _SYSTEM_H_
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/* Input devices */
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#define MAX_DEVICES (8) /* Unsure of maximum */
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#define DEVICE_2BUTTON (0) /* 2-button gamepad */
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#define DEVICE_3BUTTON (1) /* 3-button gamepad */
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#define DEVICE_6BUTTON (2) /* 6-button gamepad */
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/* Input bitmasks */
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#define INPUT_MODE (0x00000800)
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#define INPUT_Z (0x00000400)
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#define INPUT_Y (0x00000200)
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#define INPUT_X (0x00000100)
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#define INPUT_START (0x00000080)
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#define INPUT_C (0x00000040)
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#define INPUT_B (0x00000020)
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#define INPUT_A (0x00000010)
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#define INPUT_LEFT (0x00000008)
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#define INPUT_RIGHT (0x00000004)
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#define INPUT_DOWN (0x00000002)
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#define INPUT_UP (0x00000001)
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typedef struct
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{
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// uint8 *data; /* Bitmap data */
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int width; /* Bitmap width (32+512+32) */
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int height; /* Bitmap height (256) */
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// int depth; /* Color depth (8 bits) */
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int pitch; /* Width of bitmap in bytes */
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// int granularity; /* Size of each pixel in bytes */
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// int remap; /* 1= Translate pixel data */
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struct {
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int x; /* X offset of viewport within bitmap */
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int y; /* Y offset of viewport within bitmap */
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int w; /* Width of viewport */
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int h; /* Height of viewport */
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int ow; /* Previous width of viewport */
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int oh; /* Previous height of viewport */
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int changed; /* 1= Viewport width or height have changed */
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}viewport;
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}t_bitmap;
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typedef struct
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{
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uint8 dev[MAX_DEVICES]; /* Can be any of the DEVICE_* values */
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uint32 pad[MAX_DEVICES]; /* Can be any of the INPUT_* bitmasks */
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uint32 system; /* Can be any of the SYSTEM_* bitmasks */
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}t_input;
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typedef struct
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{
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int sample_rate; /* Sample rate (8000-44100) */
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int enabled; /* 1= sound emulation is enabled */
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int buffer_size; /* Size of sound buffer (in bytes) */
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int16 *buffer[2]; /* Signed 16-bit stereo sound data */
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struct {
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int curStage;
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int lastStage;
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int16 *buffer[2];
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} fm;
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struct {
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int curStage;
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int lastStage;
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int16 *buffer;
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} psg;
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}t_snd;
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/* Global variables */
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extern t_bitmap gbitmap;
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extern t_input input;
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extern t_snd snd;
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/* Function prototypes */
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void system_init(void);
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int system_frame(int skip);
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void system_reset(void);
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void system_shutdown(void);
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int audio_init(int rate);
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void audio_update(void);
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void audio_play_sample(int16 *bufl, int16 *bufr, int length);
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#endif /* _SYSTEM_H_ */
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