#include "../common.h"
#include "../graphics.h"
#include "exception.h"
#include <SDL2/SDL.h>
#include <SDL2/SDL_audio.h>
#include <SDL2/SDL_mixer.h>
#include <stdint.h>

Macros
#define	C8_RGB_R(i) ((i >> 12) & 0xFF)

#define	C8_RGB_G(i) ((i >> 8) & 0xFF)

#define	C8_RGB_B(i) (i & 0xFF)

#define	C8_AUDIO_CHANNEL 1

#define	C8_AUDIO_SAMPLE_RATE 44100

#define	C8_AUDIO_WAVE_FREQ 440

#define	C8_AUDIO_WAVE_LENGTH C8_AUDIO_SAMPLE_RATE / C8_AUDIO_WAVE_FREQ

Functions
int	c8_sound_play (void)
	Start playing the sound.

int	c8_sound_stop (void)
	Stop the sound playing.

int	c8_deinit_graphics (void)
	Deinitialize the graphics library.

int	c8_init_graphics (void)
	Initialize the graphics library.

int	c8_render (C8_Display display, int colors)
	Render graphics.

int	c8_tick (int *key)
	Process keypresses.

Detailed Description

Note: NOT EXPORTED

SDL2 graphics implementation. When SDL2 is defined, overrides weak graphics utility function definitions in graphics.c.

Macro Definition Documentation

◆ C8_AUDIO_CHANNEL

#define C8_AUDIO_CHANNEL 1

◆ C8_AUDIO_SAMPLE_RATE

#define C8_AUDIO_SAMPLE_RATE 44100

◆ C8_AUDIO_WAVE_FREQ

#define C8_AUDIO_WAVE_FREQ 440

◆ C8_AUDIO_WAVE_LENGTH

#define C8_AUDIO_WAVE_LENGTH C8_AUDIO_SAMPLE_RATE / C8_AUDIO_WAVE_FREQ

◆ C8_RGB_B

#define C8_RGB_B ( i ) (i & 0xFF)

◆ C8_RGB_G

#define C8_RGB_G ( i ) ((i >> 8) & 0xFF)

◆ C8_RGB_R

#define C8_RGB_R ( i ) ((i >> 12) & 0xFF)

Function Documentation

◆ c8_deinit_graphics()

int c8_deinit_graphics ( void )

Deinitialize the graphics library.

Deinitialize graphics system.

◆ c8_init_graphics()

int c8_init_graphics ( void )

Initialize the graphics library.

Initialize graphics system.

Returns: 0 if successful, error code otherwise.

◆ c8_render()

int c8_render	(	C8_Display *	display,
		int *	colors
	)

Render graphics.

Render the given display to the SDL2 window.

Parameters

display	`C8_Display` to render
colors	colors to render

Returns: 0 on success, non-zero on failure

◆ c8_sound_play()

int c8_sound_play ( void )

Start playing the sound.

Stop sound.

Returns: 0 if successful, error code otherwise.

◆ c8_sound_stop()

int c8_sound_stop ( void )

Stop the sound playing.

Play sound.

Returns: 0 if successful, error code otherwise.

◆ c8_tick()

int c8_tick ( int * key )

Process keypresses.

Grab current keypresses and delay execution to match clockspeed.

If a relevant key is pressed or released (see c8_keyMap in this file), this function will update key accordingly.