scrcpy/app/src/scrcpy.c
Romain Vimont f7efafd846 Explicitly pass control flag to input manager
Replace the "global" control flag in the input_manager by a function
parameter to make explicit that the behavior depends whether
--no-control has been set.
2019-03-03 11:05:26 +01:00

424 lines
12 KiB
C

#include "scrcpy.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <libavformat/avformat.h>
#include <sys/time.h>
#include <SDL2/SDL.h>
#include "command.h"
#include "common.h"
#include "controller.h"
#include "decoder.h"
#include "device.h"
#include "events.h"
#include "file_handler.h"
#include "fps_counter.h"
#include "input_manager.h"
#include "log.h"
#include "lock_util.h"
#include "net.h"
#include "recorder.h"
#include "screen.h"
#include "server.h"
#include "stream.h"
#include "tiny_xpm.h"
#include "video_buffer.h"
static struct server server = SERVER_INITIALIZER;
static struct screen screen = SCREEN_INITIALIZER;
static struct video_buffer video_buffer;
static struct stream stream;
static struct decoder decoder;
static struct recorder recorder;
static struct controller controller;
static struct file_handler file_handler;
static struct input_manager input_manager = {
.controller = &controller,
.video_buffer = &video_buffer,
.screen = &screen,
};
// init SDL and set appropriate hints
static bool
sdl_init_and_configure(bool display) {
uint32_t flags = display ? SDL_INIT_VIDEO : SDL_INIT_EVENTS;
if (SDL_Init(flags)) {
LOGC("Could not initialize SDL: %s", SDL_GetError());
return false;
}
atexit(SDL_Quit);
if (!display) {
return true;
}
// Use the best available scale quality
if (!SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "2")) {
LOGW("Could not enable bilinear filtering");
}
#ifdef SCRCPY_SDL_HAS_HINT_MOUSE_FOCUS_CLICKTHROUGH
// Handle a click to gain focus as any other click
if (!SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1")) {
LOGW("Could not enable mouse focus clickthrough");
}
#endif
// Do not disable the screensaver when scrcpy is running
SDL_EnableScreenSaver();
return true;
}
#if defined(__APPLE__) || defined(__WINDOWS__)
# define CONTINUOUS_RESIZING_WORKAROUND
#endif
#ifdef CONTINUOUS_RESIZING_WORKAROUND
// On Windows and MacOS, resizing blocks the event loop, so resizing events are
// not triggered. As a workaround, handle them in an event handler.
//
// <https://bugzilla.libsdl.org/show_bug.cgi?id=2077>
// <https://stackoverflow.com/a/40693139/1987178>
static int
event_watcher(void *data, SDL_Event *event) {
if (event->type == SDL_WINDOWEVENT
&& event->window.event == SDL_WINDOWEVENT_RESIZED) {
// called from another thread, not very safe, but it's a workaround!
screen_render(&screen);
}
return 0;
}
#endif
static bool
is_apk(const char *file) {
const char *ext = strrchr(file, '.');
return ext && !strcmp(ext, ".apk");
}
enum event_result {
EVENT_RESULT_CONTINUE,
EVENT_RESULT_STOPPED_BY_USER,
EVENT_RESULT_STOPPED_BY_EOS,
};
static enum event_result
handle_event(SDL_Event *event, bool control) {
switch (event->type) {
case EVENT_STREAM_STOPPED:
LOGD("Video stream stopped");
return EVENT_RESULT_STOPPED_BY_EOS;
case SDL_QUIT:
LOGD("User requested to quit");
return EVENT_RESULT_STOPPED_BY_USER;
case EVENT_NEW_FRAME:
if (!screen.has_frame) {
screen.has_frame = true;
// this is the very first frame, show the window
screen_show_window(&screen);
}
if (!screen_update_frame(&screen, &video_buffer)) {
return false;
}
break;
case SDL_WINDOWEVENT:
switch (event->window.event) {
case SDL_WINDOWEVENT_EXPOSED:
case SDL_WINDOWEVENT_SIZE_CHANGED:
screen_render(&screen);
break;
}
break;
case SDL_TEXTINPUT:
if (!control) {
break;
}
input_manager_process_text_input(&input_manager, &event->text);
break;
case SDL_KEYDOWN:
case SDL_KEYUP:
// some key events do not interact with the device, so process the
// event even if control is disabled
input_manager_process_key(&input_manager, &event->key, control);
break;
case SDL_MOUSEMOTION:
if (!control) {
break;
}
input_manager_process_mouse_motion(&input_manager, &event->motion);
break;
case SDL_MOUSEWHEEL:
if (!control) {
break;
}
input_manager_process_mouse_wheel(&input_manager, &event->wheel);
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
// some mouse events do not interact with the device, so process
// the event even if control is disabled
input_manager_process_mouse_button(&input_manager, &event->button,
control);
break;
case SDL_DROPFILE: {
if (!control) {
break;
}
file_handler_action_t action;
if (is_apk(event->drop.file)) {
action = ACTION_INSTALL_APK;
} else {
action = ACTION_PUSH_FILE;
}
file_handler_request(&file_handler, action, event->drop.file);
break;
}
}
return EVENT_RESULT_CONTINUE;
}
static bool
event_loop(bool display, bool control) {
#ifdef CONTINUOUS_RESIZING_WORKAROUND
if (display) {
SDL_AddEventWatch(event_watcher, NULL);
}
#endif
SDL_Event event;
while (SDL_WaitEvent(&event)) {
enum event_result result = handle_event(&event, control);
switch (result) {
case EVENT_RESULT_STOPPED_BY_USER:
return true;
case EVENT_RESULT_STOPPED_BY_EOS:
return false;
case EVENT_RESULT_CONTINUE:
break;
}
}
return false;
}
static process_t
set_show_touches_enabled(const char *serial, bool enabled) {
const char *value = enabled ? "1" : "0";
const char *const adb_cmd[] = {
"shell", "settings", "put", "system", "show_touches", value
};
return adb_execute(serial, adb_cmd, ARRAY_LEN(adb_cmd));
}
static void
wait_show_touches(process_t process) {
// reap the process, ignore the result
process_check_success(process, "show_touches");
}
static SDL_LogPriority
sdl_priority_from_av_level(int level) {
switch (level) {
case AV_LOG_PANIC:
case AV_LOG_FATAL:
return SDL_LOG_PRIORITY_CRITICAL;
case AV_LOG_ERROR:
return SDL_LOG_PRIORITY_ERROR;
case AV_LOG_WARNING:
return SDL_LOG_PRIORITY_WARN;
case AV_LOG_INFO:
return SDL_LOG_PRIORITY_INFO;
}
// do not forward others, which are too verbose
return 0;
}
static void
av_log_callback(void *avcl, int level, const char *fmt, va_list vl) {
SDL_LogPriority priority = sdl_priority_from_av_level(level);
if (priority == 0) {
return;
}
char *local_fmt = SDL_malloc(strlen(fmt) + 10);
if (!local_fmt) {
LOGC("Cannot allocate string");
return;
}
// strcpy is safe here, the destination is large enough
strcpy(local_fmt, "[FFmpeg] ");
strcpy(local_fmt + 9, fmt);
SDL_LogMessageV(SDL_LOG_CATEGORY_VIDEO, priority, local_fmt, vl);
SDL_free(local_fmt);
}
bool
scrcpy(const struct scrcpy_options *options) {
bool record = !!options->record_filename;
if (!server_start(&server, options->serial, options->port,
options->max_size, options->bit_rate, options->crop,
record)) {
return false;
}
process_t proc_show_touches = PROCESS_NONE;
bool show_touches_waited;
if (options->show_touches) {
LOGI("Enable show_touches");
proc_show_touches = set_show_touches_enabled(options->serial, true);
show_touches_waited = false;
}
bool ret = true;
bool display = !options->no_display;
bool control = !options->no_control;
if (!sdl_init_and_configure(display)) {
ret = false;
goto finally_destroy_server;
}
socket_t device_socket = server_connect_to(&server);
if (device_socket == INVALID_SOCKET) {
server_stop(&server);
ret = false;
goto finally_destroy_server;
}
char device_name[DEVICE_NAME_FIELD_LENGTH];
struct size frame_size;
// screenrecord does not send frames when the screen content does not
// change therefore, we transmit the screen size before the video stream,
// to be able to init the window immediately
if (!device_read_info(device_socket, device_name, &frame_size)) {
server_stop(&server);
ret = false;
goto finally_destroy_server;
}
struct decoder *dec = NULL;
if (display) {
if (!video_buffer_init(&video_buffer)) {
server_stop(&server);
ret = false;
goto finally_destroy_server;
}
if (control && !file_handler_init(&file_handler, server.serial)) {
ret = false;
server_stop(&server);
goto finally_destroy_video_buffer;
}
decoder_init(&decoder, &video_buffer);
dec = &decoder;
}
struct recorder *rec = NULL;
if (record) {
if (!recorder_init(&recorder,
options->record_filename,
options->record_format,
frame_size)) {
ret = false;
server_stop(&server);
goto finally_destroy_file_handler;
}
rec = &recorder;
}
av_log_set_callback(av_log_callback);
stream_init(&stream, device_socket, dec, rec);
// now we consumed the header values, the socket receives the video stream
// start the stream
if (!stream_start(&stream)) {
ret = false;
server_stop(&server);
goto finally_destroy_recorder;
}
if (display) {
if (control) {
if (!controller_init(&controller, device_socket)) {
ret = false;
goto finally_stop_stream;
}
if (!controller_start(&controller)) {
ret = false;
goto finally_destroy_controller;
}
}
if (!screen_init_rendering(&screen, device_name, frame_size,
options->always_on_top)) {
ret = false;
goto finally_stop_and_join_controller;
}
if (options->fullscreen) {
screen_switch_fullscreen(&screen);
}
}
if (options->show_touches) {
wait_show_touches(proc_show_touches);
show_touches_waited = true;
}
ret = event_loop(display, control);
LOGD("quit...");
screen_destroy(&screen);
finally_stop_and_join_controller:
if (display && control) {
controller_stop(&controller);
controller_join(&controller);
}
finally_destroy_controller:
if (display && control) {
controller_destroy(&controller);
}
finally_stop_stream:
stream_stop(&stream);
// stop the server before stream_join() to wake up the stream
server_stop(&server);
stream_join(&stream);
finally_destroy_recorder:
if (record) {
recorder_destroy(&recorder);
}
finally_destroy_file_handler:
if (display && control) {
file_handler_stop(&file_handler);
file_handler_join(&file_handler);
file_handler_destroy(&file_handler);
}
finally_destroy_video_buffer:
if (display) {
video_buffer_destroy(&video_buffer);
}
finally_destroy_server:
if (options->show_touches) {
if (!show_touches_waited) {
// wait the process which enabled "show touches"
wait_show_touches(proc_show_touches);
}
LOGI("Disable show_touches");
proc_show_touches = set_show_touches_enabled(options->serial,
false);
wait_show_touches(proc_show_touches);
}
server_destroy(&server);
return ret;
}