| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (c) 2013 Google, Inc |
| */ |
| |
| #ifndef __SANDBOX_SDL_H |
| #define __SANDBOX_SDL_H |
| |
| #include <errno.h> |
| |
| #ifdef CONFIG_SANDBOX_SDL |
| |
| /** |
| * sandbox_sdl_init_display() - Set up SDL video ready for use |
| * |
| * @width: Window width in pixels |
| * @height Window height in pixels |
| * @log2_bpp: Log to base 2 of the number of bits per pixel. So a 32bpp |
| * display will pass 5, since 2*5 = 32 |
| * @double_size: true to double the visible size in each direction for high-DPI |
| * displays |
| * @return 0 if OK, -ENODEV if no device, -EIO if SDL failed to initialize |
| * and -EPERM if the video failed to come up. |
| */ |
| int sandbox_sdl_init_display(int width, int height, int log2_bpp, |
| bool double_size); |
| |
| /** |
| * sandbox_sdl_remove_display() - Remove the SDL screen |
| * |
| * @return 0 if OK, -ENOENT if the SDL had not been inited. |
| */ |
| int sandbox_sdl_remove_display(void); |
| |
| /** |
| * sandbox_sdl_sync() - Sync current U-Boot LCD frame buffer to SDL |
| * |
| * This must be called periodically to update the screen for SDL so that the |
| * user can see it. |
| * |
| * @lcd_base: Base of frame buffer |
| * @return 0 if screen was updated, -ENODEV is there is no screen. |
| */ |
| int sandbox_sdl_sync(void *lcd_base); |
| |
| /** |
| * sandbox_sdl_scan_keys() - scan for pressed keys |
| * |
| * Works out which keys are pressed and returns a list |
| * |
| * @key: Array to receive keycodes |
| * @max_keys: Size of array |
| * @return number of keycodes found, 0 if none, -ENODEV if no keyboard |
| */ |
| int sandbox_sdl_scan_keys(int key[], int max_keys); |
| |
| /** |
| * sandbox_sdl_key_pressed() - check if a particular key is pressed |
| * |
| * @keycode: Keycode to check (KEY_... - see include/linux/input.h |
| * @return 0 if pressed, -ENOENT if not pressed. -ENODEV if keybord not |
| * available, |
| */ |
| int sandbox_sdl_key_pressed(int keycode); |
| |
| /** |
| * sandbox_sdl_sound_play() - Play a sound |
| * |
| * @data: Data to play (typically 16-bit) |
| * @count: Number of bytes in data |
| */ |
| int sandbox_sdl_sound_play(const void *data, uint count); |
| |
| /** |
| * sandbox_sdl_sound_stop() - stop playing a sound |
| * |
| * @return 0 if OK, -ENODEV if no sound is available |
| */ |
| int sandbox_sdl_sound_stop(void); |
| |
| /** |
| * sandbox_sdl_sound_init() - set up the sound system |
| * |
| * @rate: Sample rate to use |
| * @channels: Number of channels to use (1=mono, 2=stereo) |
| * @return 0 if OK, -ENODEV if no sound is available |
| */ |
| int sandbox_sdl_sound_init(int rate, int channels); |
| |
| #else |
| static inline int sandbox_sdl_init_display(int width, int height, int log2_bpp, |
| bool double_size) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_sync(void *lcd_base) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_scan_keys(int key[], int max_keys) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_key_pressed(int keycode) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_sound_start(uint frequency) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_sound_play(const void *data, uint count) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_sound_stop(void) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int sandbox_sdl_sound_init(int rate, int channels) |
| { |
| return -ENODEV; |
| } |
| |
| #endif |
| |
| #endif |