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Add an option --otg to run scrcpy with only physical keyboard and mouse simulation (HID over AOA), without mirroring and without requiring adb. To avoid adding complexity into the scrcpy initialization and screen implementation, OTG mode is implemented totally separately, with a separate window. PR #2974 <#2974>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,213 @@ | ||
| #include "scrcpy_otg.h" | ||
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| #include <SDL2/SDL.h> | ||
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| #include "events.h" | ||
| #include "screen_otg.h" | ||
| #include "util/log.h" | ||
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| struct scrcpy_otg { | ||
| struct sc_usb usb; | ||
| struct sc_aoa aoa; | ||
| struct sc_hid_keyboard keyboard; | ||
| struct sc_hid_mouse mouse; | ||
|
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| struct sc_screen_otg screen_otg; | ||
| }; | ||
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| static void | ||
| sc_usb_on_disconnected(struct sc_usb *usb, void *userdata) { | ||
| (void) usb; | ||
| (void) userdata; | ||
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| SDL_Event event; | ||
| event.type = EVENT_USB_DEVICE_DISCONNECTED; | ||
| int ret = SDL_PushEvent(&event); | ||
| if (ret < 0) { | ||
| LOGE("Could not post USB disconnection event: %s", SDL_GetError()); | ||
| } | ||
| } | ||
|
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| static bool | ||
| event_loop(struct scrcpy_otg *s) { | ||
| SDL_Event event; | ||
| while (SDL_WaitEvent(&event)) { | ||
| switch (event.type) { | ||
| case EVENT_USB_DEVICE_DISCONNECTED: | ||
| LOGW("Device disconnected"); | ||
| return false; | ||
| case SDL_QUIT: | ||
| LOGD("User requested to quit"); | ||
| return true; | ||
| default: | ||
| sc_screen_otg_handle_event(&s->screen_otg, &event); | ||
| break; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
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| bool | ||
| scrcpy_otg(struct scrcpy_options *options) { | ||
| static struct scrcpy_otg scrcpy_otg; | ||
| struct scrcpy_otg *s = &scrcpy_otg; | ||
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| const char *serial = options->serial; | ||
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| // Minimal SDL initialization | ||
| if (SDL_Init(SDL_INIT_EVENTS)) { | ||
| LOGC("Could not initialize SDL: %s", SDL_GetError()); | ||
| return false; | ||
| } | ||
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| atexit(SDL_Quit); | ||
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| bool ret = false; | ||
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| struct sc_hid_keyboard *keyboard = NULL; | ||
| struct sc_hid_mouse *mouse = NULL; | ||
| bool usb_device_initialized = false; | ||
| bool usb_connected = false; | ||
| bool aoa_started = false; | ||
| bool aoa_initialized = false; | ||
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| static const struct sc_usb_callbacks cbs = { | ||
| .on_disconnected = sc_usb_on_disconnected, | ||
| }; | ||
| bool ok = sc_usb_init(&s->usb); | ||
| if (!ok) { | ||
| return false; | ||
| } | ||
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| struct sc_usb_device usb_devices[16]; | ||
| ssize_t count = sc_usb_find_devices(&s->usb, serial, usb_devices, | ||
| ARRAY_LEN(usb_devices)); | ||
| if (count < 0) { | ||
| LOGE("Could not list USB devices"); | ||
| goto end; | ||
| } | ||
|
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| if (count == 0) { | ||
| if (serial) { | ||
| LOGE("Could not find USB device %s", serial); | ||
| } else { | ||
| LOGE("Could not find any USB device"); | ||
| } | ||
| goto end; | ||
| } | ||
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| if (count > 1) { | ||
| if (serial) { | ||
| LOGE("Multiple (%d) USB devices with serial %s:", (int) count, | ||
| serial); | ||
| } else { | ||
| LOGE("Multiple (%d) USB devices:", (int) count); | ||
| } | ||
| for (size_t i = 0; i < (size_t) count; ++i) { | ||
| struct sc_usb_device *d = &usb_devices[i]; | ||
| LOGE(" %-18s (%04" PRIx16 ":%04" PRIx16 ") %s %s", | ||
| d->serial, d->vid, d->pid, d->manufacturer, d->product); | ||
| } | ||
| if (!serial) { | ||
| LOGE("Specify the device via -s or --serial"); | ||
| } | ||
| sc_usb_device_destroy_all(usb_devices, count); | ||
| goto end; | ||
| } | ||
| usb_device_initialized = true; | ||
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| struct sc_usb_device *usb_device = &usb_devices[0]; | ||
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| LOGI("USB device: %s (%04" PRIx16 ":%04" PRIx16 ") %s %s", | ||
| usb_device->serial, usb_device->vid, usb_device->pid, | ||
| usb_device->manufacturer, usb_device->product); | ||
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| ok = sc_usb_connect(&s->usb, usb_device->device, &cbs, NULL); | ||
| if (!ok) { | ||
| goto end; | ||
| } | ||
| usb_connected = true; | ||
|
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| ok = sc_aoa_init(&s->aoa, &s->usb, NULL); | ||
| if (!ok) { | ||
| goto end; | ||
| } | ||
| aoa_initialized = true; | ||
|
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| ok = sc_hid_keyboard_init(&s->keyboard, &s->aoa); | ||
| if (!ok) { | ||
| goto end; | ||
| } | ||
| keyboard = &s->keyboard; | ||
|
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| ok = sc_hid_mouse_init(&s->mouse, &s->aoa); | ||
| if (!ok) { | ||
| goto end; | ||
| } | ||
| mouse = &s->mouse; | ||
|
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| ok = sc_aoa_start(&s->aoa); | ||
| if (!ok) { | ||
| goto end; | ||
| } | ||
| aoa_started = true; | ||
|
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| const char *window_title = options->window_title; | ||
| if (!window_title) { | ||
| window_title = usb_device->product ? usb_device->product : "scrcpy"; | ||
| } | ||
|
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| struct sc_screen_otg_params params = { | ||
| .keyboard = keyboard, | ||
| .mouse = mouse, | ||
| .window_title = window_title, | ||
| .always_on_top = options->always_on_top, | ||
| .window_x = options->window_x, | ||
| .window_y = options->window_y, | ||
| .window_borderless = options->window_borderless, | ||
| }; | ||
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| ok = sc_screen_otg_init(&s->screen_otg, ¶ms); | ||
| if (!ok) { | ||
| goto end; | ||
| } | ||
|
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| // usb_device not needed anymore | ||
| sc_usb_device_destroy(usb_device); | ||
| usb_device_initialized = false; | ||
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| ret = event_loop(s); | ||
| LOGD("quit..."); | ||
|
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| end: | ||
| if (aoa_started) { | ||
| sc_aoa_stop(&s->aoa); | ||
| } | ||
| sc_usb_stop(&s->usb); | ||
|
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| if (mouse) { | ||
| sc_hid_mouse_destroy(&s->mouse); | ||
| } | ||
| if (keyboard) { | ||
| sc_hid_keyboard_destroy(&s->keyboard); | ||
| } | ||
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| if (aoa_initialized) { | ||
| sc_aoa_join(&s->aoa); | ||
| sc_aoa_destroy(&s->aoa); | ||
| } | ||
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| sc_usb_join(&s->usb); | ||
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| if (usb_connected) { | ||
| sc_usb_disconnect(&s->usb); | ||
| } | ||
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| if (usb_device_initialized) { | ||
| sc_usb_device_destroy(usb_device); | ||
| } | ||
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| sc_usb_destroy(&s->usb); | ||
|
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| return ret; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| #ifndef SCRCPY_OTG_H | ||
| #define SCRCPY_OTG_H | ||
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| #include "common.h" | ||
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| #include <stdbool.h> | ||
| #include "options.h" | ||
|
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| bool | ||
| scrcpy_otg(struct scrcpy_options *options); | ||
|
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| #endif |
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