509 lines
14 KiB
C
509 lines
14 KiB
C
#include "scrcpy.h"
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <libavformat/avformat.h>
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#include <sys/time.h>
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#include <SDL2/SDL.h>
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#ifdef _WIN32
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// not needed here, but winsock2.h must never be included AFTER windows.h
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# include <winsock2.h>
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# include <windows.h>
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#endif
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#include "controller.h"
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#include "decoder.h"
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#include "device.h"
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#include "events.h"
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#include "file_handler.h"
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#include "fps_counter.h"
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#include "input_manager.h"
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#include "recorder.h"
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#include "screen.h"
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#include "server.h"
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#include "stream.h"
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#include "tiny_xpm.h"
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#include "video_buffer.h"
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#include "util/lock.h"
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#include "util/log.h"
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#include "util/net.h"
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static struct server server;
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static struct screen screen = SCREEN_INITIALIZER;
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static struct fps_counter fps_counter;
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static struct video_buffer video_buffer;
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static struct stream stream;
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static struct decoder decoder;
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static struct recorder recorder;
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static struct controller controller;
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static struct file_handler file_handler;
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static struct input_manager input_manager = {
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.controller = &controller,
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.video_buffer = &video_buffer,
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.screen = &screen,
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.repeat = 0,
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// initialized later
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.prefer_text = false,
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.sdl_shortcut_mods = {
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.data = {0},
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.count = 0,
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},
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};
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#ifdef _WIN32
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BOOL WINAPI windows_ctrl_handler(DWORD ctrl_type) {
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if (ctrl_type == CTRL_C_EVENT) {
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SDL_Event event;
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event.type = SDL_QUIT;
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SDL_PushEvent(&event);
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return TRUE;
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}
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return FALSE;
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}
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#endif // _WIN32
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// init SDL and set appropriate hints
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static bool
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sdl_init_and_configure(bool display, const char *render_driver,
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bool disable_screensaver) {
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uint32_t flags = display ? SDL_INIT_VIDEO : SDL_INIT_EVENTS;
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if (SDL_Init(flags)) {
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LOGC("Could not initialize SDL: %s", SDL_GetError());
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return false;
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}
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atexit(SDL_Quit);
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#ifdef _WIN32
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// Clean up properly on Ctrl+C on Windows
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bool ok = SetConsoleCtrlHandler(windows_ctrl_handler, TRUE);
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if (!ok) {
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LOGW("Could not set Ctrl+C handler");
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}
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#endif // _WIN32
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if (!display) {
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return true;
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}
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if (render_driver && !SDL_SetHint(SDL_HINT_RENDER_DRIVER, render_driver)) {
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LOGW("Could not set render driver");
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}
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// Linear filtering
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if (!SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1")) {
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LOGW("Could not enable linear filtering");
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}
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#ifdef SCRCPY_SDL_HAS_HINT_MOUSE_FOCUS_CLICKTHROUGH
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// Handle a click to gain focus as any other click
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if (!SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1")) {
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LOGW("Could not enable mouse focus clickthrough");
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}
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#endif
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#ifdef SCRCPY_SDL_HAS_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR
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// Disable compositor bypassing on X11
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if (!SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0")) {
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LOGW("Could not disable X11 compositor bypass");
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}
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#endif
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// Do not minimize on focus loss
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if (!SDL_SetHint(SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, "0")) {
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LOGW("Could not disable minimize on focus loss");
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}
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if (disable_screensaver) {
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LOGD("Screensaver disabled");
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SDL_DisableScreenSaver();
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} else {
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LOGD("Screensaver enabled");
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SDL_EnableScreenSaver();
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}
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return true;
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}
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#if defined(__APPLE__) || defined(__WINDOWS__)
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# define CONTINUOUS_RESIZING_WORKAROUND
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#endif
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#ifdef CONTINUOUS_RESIZING_WORKAROUND
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// On Windows and MacOS, resizing blocks the event loop, so resizing events are
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// not triggered. As a workaround, handle them in an event handler.
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//
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// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
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// <https://stackoverflow.com/a/40693139/1987178>
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static int
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event_watcher(void *data, SDL_Event *event) {
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(void) data;
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if (event->type == SDL_WINDOWEVENT
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&& event->window.event == SDL_WINDOWEVENT_RESIZED) {
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// In practice, it seems to always be called from the same thread in
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// that specific case. Anyway, it's just a workaround.
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screen_render(&screen, true);
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}
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return 0;
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}
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#endif
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static bool
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is_apk(const char *file) {
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const char *ext = strrchr(file, '.');
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return ext && !strcmp(ext, ".apk");
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}
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enum event_result {
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EVENT_RESULT_CONTINUE,
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EVENT_RESULT_STOPPED_BY_USER,
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EVENT_RESULT_STOPPED_BY_EOS,
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};
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static enum event_result
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handle_event(SDL_Event *event, const struct scrcpy_options *options) {
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switch (event->type) {
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case EVENT_STREAM_STOPPED:
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LOGD("Video stream stopped");
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return EVENT_RESULT_STOPPED_BY_EOS;
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case SDL_QUIT:
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LOGD("User requested to quit");
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return EVENT_RESULT_STOPPED_BY_USER;
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case EVENT_NEW_FRAME:
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if (!screen.has_frame) {
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screen.has_frame = true;
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// this is the very first frame, show the window
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screen_show_window(&screen);
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}
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if (!screen_update_frame(&screen, &video_buffer)) {
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return EVENT_RESULT_CONTINUE;
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}
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break;
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case SDL_WINDOWEVENT:
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screen_handle_window_event(&screen, &event->window);
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break;
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case SDL_TEXTINPUT:
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if (!options->control) {
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break;
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}
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input_manager_process_text_input(&input_manager, &event->text);
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break;
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case SDL_KEYDOWN:
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case SDL_KEYUP:
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// some key events do not interact with the device, so process the
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// event even if control is disabled
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input_manager_process_key(&input_manager, &event->key);
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break;
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case SDL_MOUSEMOTION:
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if (!options->control) {
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break;
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}
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input_manager_process_mouse_motion(&input_manager, &event->motion);
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break;
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case SDL_MOUSEWHEEL:
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if (!options->control) {
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break;
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}
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input_manager_process_mouse_wheel(&input_manager, &event->wheel);
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break;
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case SDL_MOUSEBUTTONDOWN:
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case SDL_MOUSEBUTTONUP:
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// some mouse events do not interact with the device, so process
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// the event even if control is disabled
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input_manager_process_mouse_button(&input_manager, &event->button);
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break;
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case SDL_FINGERMOTION:
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case SDL_FINGERDOWN:
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case SDL_FINGERUP:
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input_manager_process_touch(&input_manager, &event->tfinger);
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break;
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case SDL_DROPFILE: {
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if (!options->control) {
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break;
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}
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file_handler_action_t action;
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if (is_apk(event->drop.file)) {
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action = ACTION_INSTALL_APK;
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} else {
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action = ACTION_PUSH_FILE;
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}
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file_handler_request(&file_handler, action, event->drop.file);
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break;
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}
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}
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return EVENT_RESULT_CONTINUE;
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}
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static bool
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event_loop(const struct scrcpy_options *options) {
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#ifdef CONTINUOUS_RESIZING_WORKAROUND
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if (options->display) {
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SDL_AddEventWatch(event_watcher, NULL);
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}
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#endif
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SDL_Event event;
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while (SDL_WaitEvent(&event)) {
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enum event_result result = handle_event(&event, options);
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switch (result) {
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case EVENT_RESULT_STOPPED_BY_USER:
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return true;
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case EVENT_RESULT_STOPPED_BY_EOS:
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LOGW("Device disconnected");
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return false;
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case EVENT_RESULT_CONTINUE:
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break;
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}
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}
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return false;
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}
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static SDL_LogPriority
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sdl_priority_from_av_level(int level) {
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switch (level) {
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case AV_LOG_PANIC:
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case AV_LOG_FATAL:
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return SDL_LOG_PRIORITY_CRITICAL;
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case AV_LOG_ERROR:
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return SDL_LOG_PRIORITY_ERROR;
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case AV_LOG_WARNING:
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return SDL_LOG_PRIORITY_WARN;
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case AV_LOG_INFO:
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return SDL_LOG_PRIORITY_INFO;
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}
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// do not forward others, which are too verbose
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return 0;
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}
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static void
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av_log_callback(void *avcl, int level, const char *fmt, va_list vl) {
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(void) avcl;
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SDL_LogPriority priority = sdl_priority_from_av_level(level);
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if (priority == 0) {
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return;
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}
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char *local_fmt = SDL_malloc(strlen(fmt) + 10);
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if (!local_fmt) {
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LOGC("Could not allocate string");
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return;
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}
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// strcpy is safe here, the destination is large enough
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strcpy(local_fmt, "[FFmpeg] ");
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strcpy(local_fmt + 9, fmt);
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SDL_LogMessageV(SDL_LOG_CATEGORY_VIDEO, priority, local_fmt, vl);
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SDL_free(local_fmt);
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}
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bool
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scrcpy(const struct scrcpy_options *options) {
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if (!server_init(&server)) {
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return false;
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}
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bool ret = false;
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bool server_started = false;
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bool fps_counter_initialized = false;
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bool video_buffer_initialized = false;
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bool file_handler_initialized = false;
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bool recorder_initialized = false;
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bool stream_started = false;
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bool controller_initialized = false;
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bool controller_started = false;
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bool record = !!options->record_filename;
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struct server_params params = {
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.log_level = options->log_level,
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.crop = options->crop,
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.port_range = options->port_range,
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.max_size = options->max_size,
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.bit_rate = options->bit_rate,
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.max_fps = options->max_fps,
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.lock_video_orientation = options->lock_video_orientation,
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.control = options->control,
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.display_id = options->display_id,
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.show_touches = options->show_touches,
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.stay_awake = options->stay_awake,
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.codec_options = options->codec_options,
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.encoder_name = options->encoder_name,
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.force_adb_forward = options->force_adb_forward,
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};
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if (!server_start(&server, options->serial, ¶ms)) {
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goto end;
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}
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server_started = true;
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if (!sdl_init_and_configure(options->display, options->render_driver,
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options->disable_screensaver)) {
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goto end;
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}
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if (!server_connect_to(&server)) {
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goto end;
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}
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char device_name[DEVICE_NAME_FIELD_LENGTH];
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struct size frame_size;
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// screenrecord does not send frames when the screen content does not
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// change therefore, we transmit the screen size before the video stream,
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// to be able to init the window immediately
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if (!device_read_info(server.video_socket, device_name, &frame_size)) {
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goto end;
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}
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struct decoder *dec = NULL;
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if (options->display) {
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if (!fps_counter_init(&fps_counter)) {
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goto end;
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}
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fps_counter_initialized = true;
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if (!video_buffer_init(&video_buffer, &fps_counter,
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options->render_expired_frames)) {
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goto end;
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}
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video_buffer_initialized = true;
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if (options->control) {
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if (!file_handler_init(&file_handler, server.serial,
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options->push_target)) {
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goto end;
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}
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file_handler_initialized = true;
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}
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decoder_init(&decoder, &video_buffer);
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dec = &decoder;
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}
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struct recorder *rec = NULL;
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if (record) {
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if (!recorder_init(&recorder,
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options->record_filename,
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options->record_format,
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frame_size)) {
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goto end;
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}
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rec = &recorder;
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recorder_initialized = true;
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}
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av_log_set_callback(av_log_callback);
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stream_init(&stream, server.video_socket, dec, rec);
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// now we consumed the header values, the socket receives the video stream
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// start the stream
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if (!stream_start(&stream)) {
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goto end;
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}
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stream_started = true;
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if (options->display) {
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if (options->control) {
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if (!controller_init(&controller, server.control_socket)) {
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goto end;
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}
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controller_initialized = true;
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if (!controller_start(&controller)) {
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goto end;
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}
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controller_started = true;
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}
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const char *window_title =
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options->window_title ? options->window_title : device_name;
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if (!screen_init_rendering(&screen, window_title, frame_size,
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options->always_on_top, options->window_x,
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options->window_y, options->window_width,
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options->window_height,
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options->window_borderless,
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options->rotation, options->mipmaps)) {
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goto end;
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}
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if (options->turn_screen_off) {
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struct control_msg msg;
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msg.type = CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE;
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msg.set_screen_power_mode.mode = SCREEN_POWER_MODE_OFF;
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if (!controller_push_msg(&controller, &msg)) {
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LOGW("Could not request 'set screen power mode'");
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}
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}
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if (options->fullscreen) {
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screen_switch_fullscreen(&screen);
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}
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}
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input_manager_init(&input_manager, options);
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ret = event_loop(options);
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LOGD("quit...");
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screen_destroy(&screen);
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end:
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// stop stream and controller so that they don't continue once their socket
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// is shutdown
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if (stream_started) {
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stream_stop(&stream);
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}
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if (controller_started) {
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controller_stop(&controller);
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}
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if (file_handler_initialized) {
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file_handler_stop(&file_handler);
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}
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if (fps_counter_initialized) {
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fps_counter_interrupt(&fps_counter);
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}
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if (server_started) {
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// shutdown the sockets and kill the server
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server_stop(&server);
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}
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// now that the sockets are shutdown, the stream and controller are
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// interrupted, we can join them
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if (stream_started) {
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stream_join(&stream);
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}
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if (controller_started) {
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controller_join(&controller);
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}
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if (controller_initialized) {
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controller_destroy(&controller);
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}
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if (recorder_initialized) {
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recorder_destroy(&recorder);
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}
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if (file_handler_initialized) {
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file_handler_join(&file_handler);
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file_handler_destroy(&file_handler);
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}
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if (video_buffer_initialized) {
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video_buffer_destroy(&video_buffer);
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}
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if (fps_counter_initialized) {
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fps_counter_join(&fps_counter);
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fps_counter_destroy(&fps_counter);
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}
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server_destroy(&server);
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return ret;
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}
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