mirror of https://github.com/Genymobile/scrcpy
Move screen-related code to screen.c
The file scrcpy.c contains too many different things in addition to the main logic, so move the screen code to a separate file, screen.c.hidpi
Romain Vimont
6 years ago
parent
14c58546a7
commit
6c578b5caa
@ -0,0 +1,291 @@
|
||||
#include "screen.h"
|
||||
|
||||
#include <SDL2/SDL.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "icon.xpm"
|
||||
#include "tinyxpm.h"
|
||||
|
||||
#define DISPLAY_MARGINS 96
|
||||
|
||||
SDL_bool sdl_init_and_configure(void) {
|
||||
if (SDL_Init(SDL_INIT_VIDEO)) {
|
||||
SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Could not initialize SDL: %s", SDL_GetError());
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
// FIXME it may crash in SDL_Quit in i965_dri.so
|
||||
// As a workaround, do not call SDL_Quit() (we are exiting anyway).
|
||||
// atexit(SDL_Quit);
|
||||
|
||||
// Bilinear resizing
|
||||
if (!SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1")) {
|
||||
SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not enable bilinear filtering");
|
||||
}
|
||||
|
||||
#if SDL_VERSION_ATLEAST(2, 0, 5)
|
||||
// Handle a click to gain focus as any other click
|
||||
if (!SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1")) {
|
||||
SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not enable mouse focus clickthrough");
|
||||
}
|
||||
#endif
|
||||
|
||||
return SDL_TRUE;
|
||||
}
|
||||
|
||||
// get the window size in a struct size
|
||||
static struct size get_native_window_size(SDL_Window *window) {
|
||||
int width;
|
||||
int height;
|
||||
SDL_GetWindowSize(window, &width, &height);
|
||||
|
||||
struct size size;
|
||||
size.width = width;
|
||||
size.height = height;
|
||||
return size;
|
||||
}
|
||||
|
||||
// get the windowed window size
|
||||
static struct size get_window_size(const struct screen *screen) {
|
||||
if (screen->fullscreen) {
|
||||
return screen->windowed_window_size;
|
||||
}
|
||||
return get_native_window_size(screen->window);
|
||||
}
|
||||
|
||||
// set the window size to be applied when fullscreen is disabled
|
||||
static void set_window_size(struct screen *screen, struct size new_size) {
|
||||
// setting the window size during fullscreen is implementation defined,
|
||||
// so apply the resize only after fullscreen is disabled
|
||||
if (screen->fullscreen) {
|
||||
// SDL_SetWindowSize will be called when fullscreen will be disabled
|
||||
screen->windowed_window_size = new_size;
|
||||
} else {
|
||||
SDL_SetWindowSize(screen->window, new_size.width, new_size.height);
|
||||
}
|
||||
}
|
||||
|
||||
// get the preferred display bounds (i.e. the screen bounds with some margins)
|
||||
static SDL_bool get_preferred_display_bounds(struct size *bounds) {
|
||||
SDL_Rect rect;
|
||||
#if SDL_VERSION_ATLEAST(2, 0, 5)
|
||||
# define GET_DISPLAY_BOUNDS(i, r) SDL_GetDisplayUsableBounds((i), (r))
|
||||
#else
|
||||
# define GET_DISPLAY_BOUNDS(i, r) SDL_GetDisplayBounds((i), (r))
|
||||
#endif
|
||||
if (GET_DISPLAY_BOUNDS(0, &rect)) {
|
||||
SDL_LogWarn(SDL_LOG_CATEGORY_SYSTEM, "Could not get display usable bounds: %s", SDL_GetError());
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
bounds->width = MAX(0, rect.w - DISPLAY_MARGINS);
|
||||
bounds->height = MAX(0, rect.h - DISPLAY_MARGINS);
|
||||
return SDL_TRUE;
|
||||
}
|
||||
|
||||
// return the optimal size of the window, with the following constraints:
|
||||
// - it attempts to keep at least one dimension of the current_size (i.e. it crops the black borders)
|
||||
// - it keeps the aspect ratio
|
||||
// - it scales down to make it fit in the display_size
|
||||
static struct size get_optimal_size(struct size current_size, struct size frame_size) {
|
||||
struct size display_size;
|
||||
// 32 bits because we need to multiply two 16 bits values
|
||||
Uint32 w;
|
||||
Uint32 h;
|
||||
|
||||
if (!get_preferred_display_bounds(&display_size)) {
|
||||
// cannot get display bounds, do not constraint the size
|
||||
w = current_size.width;
|
||||
h = current_size.height;
|
||||
} else {
|
||||
w = MIN(current_size.width, display_size.width);
|
||||
h = MIN(current_size.height, display_size.height);
|
||||
}
|
||||
|
||||
SDL_bool keep_width = frame_size.width * h > frame_size.height * w;
|
||||
if (keep_width) {
|
||||
// remove black borders on top and bottom
|
||||
h = frame_size.height * w / frame_size.width;
|
||||
} else {
|
||||
// remove black borders on left and right (or none at all if it already fits)
|
||||
w = frame_size.width * h / frame_size.height;
|
||||
}
|
||||
|
||||
// w and h must fit into 16 bits
|
||||
SDL_assert_release(w < 0x10000 && h < 0x10000);
|
||||
return (struct size) {w, h};
|
||||
}
|
||||
|
||||
// same as get_optimal_size(), but read the current size from the window
|
||||
static inline struct size get_optimal_window_size(const struct screen *screen, struct size frame_size) {
|
||||
struct size current_size = get_window_size(screen);
|
||||
return get_optimal_size(current_size, frame_size);
|
||||
}
|
||||
|
||||
// initially, there is no current size, so use the frame size as current size
|
||||
static inline struct size get_initial_optimal_size(struct size frame_size) {
|
||||
return get_optimal_size(frame_size, frame_size);
|
||||
}
|
||||
|
||||
void screen_init(struct screen *screen) {
|
||||
*screen = (struct screen) SCREEN_INITIALIZER;
|
||||
}
|
||||
|
||||
SDL_bool screen_init_rendering(struct screen *screen, const char *device_name, struct size frame_size) {
|
||||
screen->frame_size = frame_size;
|
||||
|
||||
struct size window_size = get_initial_optimal_size(frame_size);
|
||||
screen->window = SDL_CreateWindow(device_name, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
|
||||
window_size.width, window_size.height, SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
|
||||
if (!screen->window) {
|
||||
SDL_LogCritical(SDL_LOG_CATEGORY_SYSTEM, "Could not create window: %s", SDL_GetError());
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
screen->renderer = SDL_CreateRenderer(screen->window, -1, SDL_RENDERER_ACCELERATED);
|
||||
if (!screen->renderer) {
|
||||
SDL_LogCritical(SDL_LOG_CATEGORY_RENDER, "Could not create renderer: %s", SDL_GetError());
|
||||
screen_destroy(screen);
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
if (SDL_RenderSetLogicalSize(screen->renderer, frame_size.width, frame_size.height)) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_RENDER, "Could not set renderer logical size: %s", SDL_GetError());
|
||||
screen_destroy(screen);
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
SDL_Surface *icon = read_xpm(icon_xpm);
|
||||
if (!icon) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_SYSTEM, "Could not load icon: %s", SDL_GetError());
|
||||
screen_destroy(screen);
|
||||
return SDL_FALSE;
|
||||
}
|
||||
SDL_SetWindowIcon(screen->window, icon);
|
||||
SDL_FreeSurface(icon);
|
||||
|
||||
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Initial texture: %" PRIu16 "x%" PRIu16, frame_size.width, frame_size.height);
|
||||
screen->texture = SDL_CreateTexture(screen->renderer, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STREAMING,
|
||||
frame_size.width, frame_size.height);
|
||||
if (!screen->texture) {
|
||||
SDL_LogCritical(SDL_LOG_CATEGORY_RENDER, "Could not create texture: %s", SDL_GetError());
|
||||
screen_destroy(screen);
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
screen_render(screen);
|
||||
return SDL_TRUE;
|
||||
}
|
||||
|
||||
void screen_destroy(struct screen *screen) {
|
||||
if (screen->texture) {
|
||||
SDL_DestroyTexture(screen->texture);
|
||||
}
|
||||
if (screen->renderer) {
|
||||
// FIXME it may crash at exit if we destroy the renderer or the window,
|
||||
// with the exact same stack trace as <https://bugs.launchpad.net/mir/+bug/1466535>.
|
||||
// As a workaround, leak the renderer and the window (we are exiting anyway).
|
||||
//SDL_DestroyRenderer(screen->renderer);
|
||||
}
|
||||
if (screen->window) {
|
||||
//SDL_DestroyWindow(screen->window);
|
||||
// at least we hide it
|
||||
SDL_HideWindow(screen->window);
|
||||
}
|
||||
}
|
||||
|
||||
// recreate the texture and resize the window if the frame size has changed
|
||||
static SDL_bool prepare_for_frame(struct screen *screen, struct size new_frame_size) {
|
||||
if (screen->frame_size.width != new_frame_size.width || screen->frame_size.height != new_frame_size.height) {
|
||||
if (SDL_RenderSetLogicalSize(screen->renderer, new_frame_size.width, new_frame_size.height)) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_RENDER, "Could not set renderer logical size: %s", SDL_GetError());
|
||||
return SDL_FALSE;
|
||||
}
|
||||
|
||||
// frame dimension changed, destroy texture
|
||||
SDL_DestroyTexture(screen->texture);
|
||||
|
||||
struct size current_size = get_window_size(screen);
|
||||
struct size target_size = {
|
||||
(Uint32) current_size.width * new_frame_size.width / screen->frame_size.width,
|
||||
(Uint32) current_size.height * new_frame_size.height / screen->frame_size.height,
|
||||
};
|
||||
target_size = get_optimal_size(target_size, new_frame_size);
|
||||
set_window_size(screen, target_size);
|
||||
|
||||
screen->frame_size = new_frame_size;
|
||||
|
||||
SDL_LogDebug(SDL_LOG_CATEGORY_APPLICATION, "New texture: %" PRIu16 "x%" PRIu16,
|
||||
screen->frame_size.width, screen->frame_size.height);
|
||||
screen->texture = SDL_CreateTexture(screen->renderer, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STREAMING,
|
||||
new_frame_size.width, new_frame_size.height);
|
||||
if (!screen->texture) {
|
||||
SDL_LogCritical(SDL_LOG_CATEGORY_RENDER, "Could not create texture: %s", SDL_GetError());
|
||||
return SDL_FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
return SDL_TRUE;
|
||||
}
|
||||
|
||||
// write the frame into the texture
|
||||
static void update_texture(struct screen *screen, const AVFrame *frame) {
|
||||
screen->texture_initialized = SDL_TRUE;
|
||||
SDL_UpdateYUVTexture(screen->texture, NULL,
|
||||
frame->data[0], frame->linesize[0],
|
||||
frame->data[1], frame->linesize[1],
|
||||
frame->data[2], frame->linesize[2]);
|
||||
}
|
||||
|
||||
SDL_bool screen_update(struct screen *screen, const AVFrame *frame) {
|
||||
struct size new_frame_size = {frame->width, frame->height};
|
||||
if (!prepare_for_frame(screen, new_frame_size)) {
|
||||
return SDL_FALSE;
|
||||
}
|
||||
update_texture(screen, frame);
|
||||
return SDL_TRUE;
|
||||
}
|
||||
|
||||
void screen_render(struct screen *screen) {
|
||||
SDL_RenderClear(screen->renderer);
|
||||
if (screen->texture_initialized) {
|
||||
SDL_RenderCopy(screen->renderer, screen->texture, NULL, NULL);
|
||||
}
|
||||
SDL_RenderPresent(screen->renderer);
|
||||
}
|
||||
|
||||
void screen_switch_fullscreen(struct screen *screen) {
|
||||
if (!screen->fullscreen) {
|
||||
// going to fullscreen, store the current windowed window size
|
||||
screen->windowed_window_size = get_native_window_size(screen->window);
|
||||
}
|
||||
Uint32 new_mode = screen->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP;
|
||||
if (SDL_SetWindowFullscreen(screen->window, new_mode)) {
|
||||
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "Could not switch fullscreen mode: %s", SDL_GetError());
|
||||
return;
|
||||
}
|
||||
|
||||
screen->fullscreen = !screen->fullscreen;
|
||||
if (!screen->fullscreen) {
|
||||
// fullscreen disabled, restore expected windowed window size
|
||||
SDL_SetWindowSize(screen->window, screen->windowed_window_size.width, screen->windowed_window_size.height);
|
||||
}
|
||||
|
||||
SDL_LogDebug(SDL_LOG_CATEGORY_APPLICATION, "Switched to %s mode", screen->fullscreen ? "fullscreen" : "windowed");
|
||||
screen_render(screen);
|
||||
}
|
||||
|
||||
void screen_resize_to_fit(struct screen *screen) {
|
||||
if (!screen->fullscreen) {
|
||||
struct size optimal_size = get_optimal_window_size(screen, screen->frame_size);
|
||||
SDL_SetWindowSize(screen->window, optimal_size.width, optimal_size.height);
|
||||
SDL_LogDebug(SDL_LOG_CATEGORY_APPLICATION, "Resized to optimal size");
|
||||
}
|
||||
}
|
||||
|
||||
void screen_resize_to_pixel_perfect(struct screen *screen) {
|
||||
if (!screen->fullscreen) {
|
||||
SDL_SetWindowSize(screen->window, screen->frame_size.width, screen->frame_size.height);
|
||||
SDL_LogDebug(SDL_LOG_CATEGORY_APPLICATION, "Resized to pixel-perfect");
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,65 @@
|
||||
#ifndef SCREEN_H
|
||||
#define SCREEN_H
|
||||
|
||||
#include <SDL2/SDL.h>
|
||||
#include <libavformat/avformat.h>
|
||||
|
||||
#include "common.h"
|
||||
|
||||
struct screen {
|
||||
SDL_Window *window;
|
||||
SDL_Renderer *renderer;
|
||||
SDL_Texture *texture;
|
||||
struct size frame_size;
|
||||
//used only in fullscreen mode to know the windowed window size
|
||||
struct size windowed_window_size;
|
||||
SDL_bool texture_initialized;
|
||||
SDL_bool fullscreen;
|
||||
};
|
||||
|
||||
#define SCREEN_INITIALIZER { \
|
||||
.window = NULL, \
|
||||
.renderer = NULL, \
|
||||
.texture = NULL, \
|
||||
.frame_size = { \
|
||||
.width = 0, \
|
||||
.height = 0, \
|
||||
}, \
|
||||
.windowed_window_size = { \
|
||||
.width = 0, \
|
||||
.height = 0, \
|
||||
}, \
|
||||
.texture_initialized = SDL_FALSE, \
|
||||
.fullscreen = SDL_FALSE, \
|
||||
}
|
||||
|
||||
// init SDL and set appropriate hints
|
||||
SDL_bool sdl_init_and_configure(void);
|
||||
|
||||
// initialize default values
|
||||
void screen_init(struct screen *screen);
|
||||
|
||||
// initialize screen, create window, renderer and texture
|
||||
SDL_bool screen_init_rendering(struct screen *screen,
|
||||
const char *device_name,
|
||||
struct size frame_size);
|
||||
|
||||
// destroy window, renderer and texture (if any)
|
||||
void screen_destroy(struct screen *screen);
|
||||
|
||||
// resize if necessary and write the frame into the texture
|
||||
SDL_bool screen_update(struct screen *screen, const AVFrame *frame);
|
||||
|
||||
// render the texture to the renderer
|
||||
void screen_render(struct screen *screen);
|
||||
|
||||
// switch the fullscreen mode
|
||||
void screen_switch_fullscreen(struct screen *screen);
|
||||
|
||||
// resize window to optimal size (remove black borders)
|
||||
void screen_resize_to_fit(struct screen *screen);
|
||||
|
||||
// resize window to 1:1 (pixel-perfect)
|
||||
void screen_resize_to_pixel_perfect(struct screen *screen);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue