Use sc_ prefix for size, position and point

This commit is contained in:
Romain Vimont 2021-10-30 15:20:39 +02:00
parent db484d82db
commit 4c4381de4c
14 changed files with 75 additions and 73 deletions

View file

@ -56,7 +56,7 @@ static const char *const screen_power_mode_labels[] = {
}; };
static void static void
write_position(uint8_t *buf, const struct position *position) { write_position(uint8_t *buf, const struct sc_position *position) {
buffer_write32be(&buf[0], position->point.x); buffer_write32be(&buf[0], position->point.x);
buffer_write32be(&buf[4], position->point.y); buffer_write32be(&buf[4], position->point.y);
buffer_write16be(&buf[8], position->screen_size.width); buffer_write16be(&buf[8], position->screen_size.width);

View file

@ -57,11 +57,11 @@ struct control_msg {
enum android_motionevent_action action; enum android_motionevent_action action;
enum android_motionevent_buttons buttons; enum android_motionevent_buttons buttons;
uint64_t pointer_id; uint64_t pointer_id;
struct position position; struct sc_position position;
float pressure; float pressure;
} inject_touch_event; } inject_touch_event;
struct { struct {
struct position position; struct sc_position position;
int32_t hscroll; int32_t hscroll;
int32_t vscroll; int32_t vscroll;
} inject_scroll_event; } inject_scroll_event;

View file

@ -3,22 +3,22 @@
#include <stdint.h> #include <stdint.h>
struct size { struct sc_size {
uint16_t width; uint16_t width;
uint16_t height; uint16_t height;
}; };
struct point { struct sc_point {
int32_t x; int32_t x;
int32_t y; int32_t y;
}; };
struct position { struct sc_position {
// The video screen size may be different from the real device screen size, // The video screen size may be different from the real device screen size,
// so store to which size the absolute position apply, to scale it // so store to which size the absolute position apply, to scale it
// accordingly. // accordingly.
struct size screen_size; struct sc_size screen_size;
struct point point; struct sc_point point;
}; };
#endif #endif

View file

@ -332,7 +332,7 @@ input_manager_process_text_input(struct input_manager *im,
static bool static bool
simulate_virtual_finger(struct input_manager *im, simulate_virtual_finger(struct input_manager *im,
enum android_motionevent_action action, enum android_motionevent_action action,
struct point point) { struct sc_point point) {
bool up = action == AMOTION_EVENT_ACTION_UP; bool up = action == AMOTION_EVENT_ACTION_UP;
struct control_msg msg; struct control_msg msg;
@ -352,8 +352,8 @@ simulate_virtual_finger(struct input_manager *im,
return true; return true;
} }
static struct point static struct sc_point
inverse_point(struct point point, struct size size) { inverse_point(struct sc_point point, struct sc_size size) {
point.x = size.width - point.x; point.x = size.width - point.x;
point.y = size.height - point.y; point.y = size.height - point.y;
return point; return point;
@ -545,10 +545,10 @@ input_manager_process_mouse_motion(struct input_manager *im,
im->mp->ops->process_mouse_motion(im->mp, event); im->mp->ops->process_mouse_motion(im->mp, event);
if (im->vfinger_down) { if (im->vfinger_down) {
struct point mouse = struct sc_point mouse =
screen_convert_window_to_frame_coords(im->screen, event->x, screen_convert_window_to_frame_coords(im->screen, event->x,
event->y); event->y);
struct point vfinger = inverse_point(mouse, im->screen->frame_size); struct sc_point vfinger = inverse_point(mouse, im->screen->frame_size);
simulate_virtual_finger(im, AMOTION_EVENT_ACTION_MOVE, vfinger); simulate_virtual_finger(im, AMOTION_EVENT_ACTION_MOVE, vfinger);
} }
} }
@ -630,10 +630,10 @@ input_manager_process_mouse_button(struct input_manager *im,
#define CTRL_PRESSED (SDL_GetModState() & (KMOD_LCTRL | KMOD_RCTRL)) #define CTRL_PRESSED (SDL_GetModState() & (KMOD_LCTRL | KMOD_RCTRL))
if ((down && !im->vfinger_down && CTRL_PRESSED) if ((down && !im->vfinger_down && CTRL_PRESSED)
|| (!down && im->vfinger_down)) { || (!down && im->vfinger_down)) {
struct point mouse = struct sc_point mouse =
screen_convert_window_to_frame_coords(im->screen, event->x, screen_convert_window_to_frame_coords(im->screen, event->x,
event->y); event->y);
struct point vfinger = inverse_point(mouse, im->screen->frame_size); struct sc_point vfinger = inverse_point(mouse, im->screen->frame_size);
enum android_motionevent_action action = down enum android_motionevent_action action = down
? AMOTION_EVENT_ACTION_DOWN ? AMOTION_EVENT_ACTION_DOWN
: AMOTION_EVENT_ACTION_UP; : AMOTION_EVENT_ACTION_UP;

View file

@ -125,7 +125,7 @@ convert_mouse_wheel(const SDL_MouseWheelEvent *from, struct screen *screen,
int mouse_y; int mouse_y;
SDL_GetMouseState(&mouse_x, &mouse_y); SDL_GetMouseState(&mouse_x, &mouse_y);
struct position position = { struct sc_position position = {
.screen_size = screen->frame_size, .screen_size = screen->frame_size,
.point = screen_convert_window_to_frame_coords(screen, .point = screen_convert_window_to_frame_coords(screen,
mouse_x, mouse_y), mouse_x, mouse_y),

View file

@ -372,7 +372,7 @@ bool
recorder_init(struct recorder *recorder, recorder_init(struct recorder *recorder,
const char *filename, const char *filename,
enum sc_record_format format, enum sc_record_format format,
struct size declared_frame_size) { struct sc_size declared_frame_size) {
recorder->filename = strdup(filename); recorder->filename = strdup(filename);
if (!recorder->filename) { if (!recorder->filename) {
LOGE("Could not strdup filename"); LOGE("Could not strdup filename");

View file

@ -25,7 +25,7 @@ struct recorder {
char *filename; char *filename;
enum sc_record_format format; enum sc_record_format format;
AVFormatContext *ctx; AVFormatContext *ctx;
struct size declared_frame_size; struct sc_size declared_frame_size;
bool header_written; bool header_written;
sc_thread thread; sc_thread thread;
@ -44,7 +44,7 @@ struct recorder {
bool bool
recorder_init(struct recorder *recorder, const char *filename, recorder_init(struct recorder *recorder, const char *filename,
enum sc_record_format format, struct size declared_frame_size); enum sc_record_format format, struct sc_size declared_frame_size);
void void
recorder_destroy(struct recorder *recorder); recorder_destroy(struct recorder *recorder);

View file

@ -309,7 +309,7 @@ scrcpy(struct scrcpy_options *options) {
} }
char device_name[DEVICE_NAME_FIELD_LENGTH]; char device_name[DEVICE_NAME_FIELD_LENGTH];
struct size frame_size; struct sc_size frame_size;
if (!server_connect_to(&s->server, device_name, &frame_size)) { if (!server_connect_to(&s->server, device_name, &frame_size)) {
goto end; goto end;

View file

@ -14,9 +14,9 @@
#define DOWNCAST(SINK) container_of(SINK, struct screen, frame_sink) #define DOWNCAST(SINK) container_of(SINK, struct screen, frame_sink)
static inline struct size static inline struct sc_size
get_rotated_size(struct size size, int rotation) { get_rotated_size(struct sc_size size, int rotation) {
struct size rotated_size; struct sc_size rotated_size;
if (rotation & 1) { if (rotation & 1) {
rotated_size.width = size.height; rotated_size.width = size.height;
rotated_size.height = size.width; rotated_size.height = size.width;
@ -27,26 +27,26 @@ get_rotated_size(struct size size, int rotation) {
return rotated_size; return rotated_size;
} }
// get the window size in a struct size // get the window size in a struct sc_size
static struct size static struct sc_size
get_window_size(const struct screen *screen) { get_window_size(const struct screen *screen) {
int width; int width;
int height; int height;
SDL_GetWindowSize(screen->window, &width, &height); SDL_GetWindowSize(screen->window, &width, &height);
struct size size; struct sc_size size;
size.width = width; size.width = width;
size.height = height; size.height = height;
return size; return size;
} }
static struct point static struct sc_point
get_window_position(const struct screen *screen) { get_window_position(const struct screen *screen) {
int x; int x;
int y; int y;
SDL_GetWindowPosition(screen->window, &x, &y); SDL_GetWindowPosition(screen->window, &x, &y);
struct point point; struct sc_point point;
point.x = x; point.x = x;
point.y = y; point.y = y;
return point; return point;
@ -54,7 +54,7 @@ get_window_position(const struct screen *screen) {
// set the window size to be applied when fullscreen is disabled // set the window size to be applied when fullscreen is disabled
static void static void
set_window_size(struct screen *screen, struct size new_size) { set_window_size(struct screen *screen, struct sc_size new_size) {
assert(!screen->fullscreen); assert(!screen->fullscreen);
assert(!screen->maximized); assert(!screen->maximized);
SDL_SetWindowSize(screen->window, new_size.width, new_size.height); SDL_SetWindowSize(screen->window, new_size.width, new_size.height);
@ -62,7 +62,7 @@ set_window_size(struct screen *screen, struct size new_size) {
// get the preferred display bounds (i.e. the screen bounds with some margins) // get the preferred display bounds (i.e. the screen bounds with some margins)
static bool static bool
get_preferred_display_bounds(struct size *bounds) { get_preferred_display_bounds(struct sc_size *bounds) {
SDL_Rect rect; SDL_Rect rect;
#ifdef SCRCPY_SDL_HAS_GET_DISPLAY_USABLE_BOUNDS #ifdef SCRCPY_SDL_HAS_GET_DISPLAY_USABLE_BOUNDS
# define GET_DISPLAY_BOUNDS(i, r) SDL_GetDisplayUsableBounds((i), (r)) # define GET_DISPLAY_BOUNDS(i, r) SDL_GetDisplayUsableBounds((i), (r))
@ -80,7 +80,7 @@ get_preferred_display_bounds(struct size *bounds) {
} }
static bool static bool
is_optimal_size(struct size current_size, struct size content_size) { is_optimal_size(struct sc_size current_size, struct sc_size content_size) {
// The size is optimal if we can recompute one dimension of the current // The size is optimal if we can recompute one dimension of the current
// size from the other // size from the other
return current_size.height == current_size.width * content_size.height return current_size.height == current_size.width * content_size.height
@ -94,16 +94,16 @@ is_optimal_size(struct size current_size, struct size content_size) {
// crops the black borders) // crops the black borders)
// - it keeps the aspect ratio // - it keeps the aspect ratio
// - it scales down to make it fit in the display_size // - it scales down to make it fit in the display_size
static struct size static struct sc_size
get_optimal_size(struct size current_size, struct size content_size) { get_optimal_size(struct sc_size current_size, struct sc_size content_size) {
if (content_size.width == 0 || content_size.height == 0) { if (content_size.width == 0 || content_size.height == 0) {
// avoid division by 0 // avoid division by 0
return current_size; return current_size;
} }
struct size window_size; struct sc_size window_size;
struct size display_size; struct sc_size display_size;
if (!get_preferred_display_bounds(&display_size)) { if (!get_preferred_display_bounds(&display_size)) {
// could not get display bounds, do not constraint the size // could not get display bounds, do not constraint the size
window_size.width = current_size.width; window_size.width = current_size.width;
@ -135,10 +135,10 @@ get_optimal_size(struct size current_size, struct size content_size) {
// initially, there is no current size, so use the frame size as current size // initially, there is no current size, so use the frame size as current size
// req_width and req_height, if not 0, are the sizes requested by the user // req_width and req_height, if not 0, are the sizes requested by the user
static inline struct size static inline struct sc_size
get_initial_optimal_size(struct size content_size, uint16_t req_width, get_initial_optimal_size(struct sc_size content_size, uint16_t req_width,
uint16_t req_height) { uint16_t req_height) {
struct size window_size; struct sc_size window_size;
if (!req_width && !req_height) { if (!req_width && !req_height) {
window_size = get_optimal_size(content_size, content_size); window_size = get_optimal_size(content_size, content_size);
} else { } else {
@ -166,9 +166,9 @@ screen_update_content_rect(struct screen *screen) {
int dh; int dh;
SDL_GL_GetDrawableSize(screen->window, &dw, &dh); SDL_GL_GetDrawableSize(screen->window, &dw, &dh);
struct size content_size = screen->content_size; struct sc_size content_size = screen->content_size;
// The drawable size is the window size * the HiDPI scale // The drawable size is the window size * the HiDPI scale
struct size drawable_size = {dw, dh}; struct sc_size drawable_size = {dw, dh};
SDL_Rect *rect = &screen->rect; SDL_Rect *rect = &screen->rect;
@ -200,7 +200,7 @@ screen_update_content_rect(struct screen *screen) {
static inline SDL_Texture * static inline SDL_Texture *
create_texture(struct screen *screen) { create_texture(struct screen *screen) {
SDL_Renderer *renderer = screen->renderer; SDL_Renderer *renderer = screen->renderer;
struct size size = screen->frame_size; struct sc_size size = screen->frame_size;
SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12, SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12,
SDL_TEXTUREACCESS_STREAMING, SDL_TEXTUREACCESS_STREAMING,
size.width, size.height); size.width, size.height);
@ -330,12 +330,12 @@ screen_init(struct screen *screen, const struct screen_params *params) {
if (screen->rotation) { if (screen->rotation) {
LOGI("Initial display rotation set to %u", screen->rotation); LOGI("Initial display rotation set to %u", screen->rotation);
} }
struct size content_size = struct sc_size content_size =
get_rotated_size(screen->frame_size, screen->rotation); get_rotated_size(screen->frame_size, screen->rotation);
screen->content_size = content_size; screen->content_size = content_size;
struct size window_size = get_initial_optimal_size(content_size, struct sc_size window_size =
params->window_width, get_initial_optimal_size(content_size,params->window_width,
params->window_height); params->window_height);
uint32_t window_flags = SDL_WINDOW_HIDDEN uint32_t window_flags = SDL_WINDOW_HIDDEN
| SDL_WINDOW_RESIZABLE | SDL_WINDOW_RESIZABLE
@ -508,10 +508,10 @@ screen_destroy(struct screen *screen) {
} }
static void static void
resize_for_content(struct screen *screen, struct size old_content_size, resize_for_content(struct screen *screen, struct sc_size old_content_size,
struct size new_content_size) { struct sc_size new_content_size) {
struct size window_size = get_window_size(screen); struct sc_size window_size = get_window_size(screen);
struct size target_size = { struct sc_size target_size = {
.width = (uint32_t) window_size.width * new_content_size.width .width = (uint32_t) window_size.width * new_content_size.width
/ old_content_size.width, / old_content_size.width,
.height = (uint32_t) window_size.height * new_content_size.height .height = (uint32_t) window_size.height * new_content_size.height
@ -522,7 +522,7 @@ resize_for_content(struct screen *screen, struct size old_content_size,
} }
static void static void
set_content_size(struct screen *screen, struct size new_content_size) { set_content_size(struct screen *screen, struct sc_size new_content_size) {
if (!screen->fullscreen && !screen->maximized) { if (!screen->fullscreen && !screen->maximized) {
resize_for_content(screen, screen->content_size, new_content_size); resize_for_content(screen, screen->content_size, new_content_size);
} else if (!screen->resize_pending) { } else if (!screen->resize_pending) {
@ -553,7 +553,7 @@ screen_set_rotation(struct screen *screen, unsigned rotation) {
return; return;
} }
struct size new_content_size = struct sc_size new_content_size =
get_rotated_size(screen->frame_size, rotation); get_rotated_size(screen->frame_size, rotation);
set_content_size(screen, new_content_size); set_content_size(screen, new_content_size);
@ -566,7 +566,7 @@ screen_set_rotation(struct screen *screen, unsigned rotation) {
// recreate the texture and resize the window if the frame size has changed // recreate the texture and resize the window if the frame size has changed
static bool static bool
prepare_for_frame(struct screen *screen, struct size new_frame_size) { prepare_for_frame(struct screen *screen, struct sc_size new_frame_size) {
if (screen->frame_size.width != new_frame_size.width if (screen->frame_size.width != new_frame_size.width
|| screen->frame_size.height != new_frame_size.height) { || screen->frame_size.height != new_frame_size.height) {
// frame dimension changed, destroy texture // frame dimension changed, destroy texture
@ -574,7 +574,7 @@ prepare_for_frame(struct screen *screen, struct size new_frame_size) {
screen->frame_size = new_frame_size; screen->frame_size = new_frame_size;
struct size new_content_size = struct sc_size new_content_size =
get_rotated_size(new_frame_size, screen->rotation); get_rotated_size(new_frame_size, screen->rotation);
set_content_size(screen, new_content_size); set_content_size(screen, new_content_size);
@ -615,7 +615,7 @@ screen_update_frame(struct screen *screen) {
fps_counter_add_rendered_frame(&screen->fps_counter); fps_counter_add_rendered_frame(&screen->fps_counter);
struct size new_frame_size = {frame->width, frame->height}; struct sc_size new_frame_size = {frame->width, frame->height};
if (!prepare_for_frame(screen, new_frame_size)) { if (!prepare_for_frame(screen, new_frame_size)) {
return false; return false;
} }
@ -682,10 +682,10 @@ screen_resize_to_fit(struct screen *screen) {
return; return;
} }
struct point point = get_window_position(screen); struct sc_point point = get_window_position(screen);
struct size window_size = get_window_size(screen); struct sc_size window_size = get_window_size(screen);
struct size optimal_size = struct sc_size optimal_size =
get_optimal_size(window_size, screen->content_size); get_optimal_size(window_size, screen->content_size);
// Center the window related to the device screen // Center the window related to the device screen
@ -711,7 +711,7 @@ screen_resize_to_pixel_perfect(struct screen *screen) {
screen->maximized = false; screen->maximized = false;
} }
struct size content_size = screen->content_size; struct sc_size content_size = screen->content_size;
SDL_SetWindowSize(screen->window, content_size.width, content_size.height); SDL_SetWindowSize(screen->window, content_size.width, content_size.height);
LOGD("Resized to pixel-perfect: %ux%u", content_size.width, LOGD("Resized to pixel-perfect: %ux%u", content_size.width,
content_size.height); content_size.height);
@ -766,7 +766,7 @@ screen_handle_event(struct screen *screen, SDL_Event *event) {
return false; return false;
} }
struct point struct sc_point
screen_convert_drawable_to_frame_coords(struct screen *screen, screen_convert_drawable_to_frame_coords(struct screen *screen,
int32_t x, int32_t y) { int32_t x, int32_t y) {
unsigned rotation = screen->rotation; unsigned rotation = screen->rotation;
@ -780,7 +780,7 @@ screen_convert_drawable_to_frame_coords(struct screen *screen,
y = (int64_t) (y - screen->rect.y) * h / screen->rect.h; y = (int64_t) (y - screen->rect.y) * h / screen->rect.h;
// rotate // rotate
struct point result; struct sc_point result;
switch (rotation) { switch (rotation) {
case 0: case 0:
result.x = x; result.x = x;
@ -803,7 +803,7 @@ screen_convert_drawable_to_frame_coords(struct screen *screen,
return result; return result;
} }
struct point struct sc_point
screen_convert_window_to_frame_coords(struct screen *screen, screen_convert_window_to_frame_coords(struct screen *screen,
int32_t x, int32_t y) { int32_t x, int32_t y) {
screen_hidpi_scale_coords(screen, &x, &y); screen_hidpi_scale_coords(screen, &x, &y);

View file

@ -27,13 +27,13 @@ struct screen {
SDL_Renderer *renderer; SDL_Renderer *renderer;
SDL_Texture *texture; SDL_Texture *texture;
struct sc_opengl gl; struct sc_opengl gl;
struct size frame_size; struct sc_size frame_size;
struct size content_size; // rotated frame_size struct sc_size content_size; // rotated frame_size
bool resize_pending; // resize requested while fullscreen or maximized bool resize_pending; // resize requested while fullscreen or maximized
// The content size the last time the window was not maximized or // The content size the last time the window was not maximized or
// fullscreen (meaningful only when resize_pending is true) // fullscreen (meaningful only when resize_pending is true)
struct size windowed_content_size; struct sc_size windowed_content_size;
// client rotation: 0, 1, 2 or 3 (x90 degrees counterclockwise) // client rotation: 0, 1, 2 or 3 (x90 degrees counterclockwise)
unsigned rotation; unsigned rotation;
@ -49,7 +49,7 @@ struct screen {
struct screen_params { struct screen_params {
const char *window_title; const char *window_title;
struct size frame_size; struct sc_size frame_size;
bool always_on_top; bool always_on_top;
int16_t window_x; int16_t window_x;
@ -120,13 +120,13 @@ screen_handle_event(struct screen *screen, SDL_Event *event);
// convert point from window coordinates to frame coordinates // convert point from window coordinates to frame coordinates
// x and y are expressed in pixels // x and y are expressed in pixels
struct point struct sc_point
screen_convert_window_to_frame_coords(struct screen *screen, screen_convert_window_to_frame_coords(struct screen *screen,
int32_t x, int32_t y); int32_t x, int32_t y);
// convert point from drawable coordinates to frame coordinates // convert point from drawable coordinates to frame coordinates
// x and y are expressed in pixels // x and y are expressed in pixels
struct point struct sc_point
screen_convert_drawable_to_frame_coords(struct screen *screen, screen_convert_drawable_to_frame_coords(struct screen *screen,
int32_t x, int32_t y); int32_t x, int32_t y);

View file

@ -427,7 +427,7 @@ error:
static bool static bool
device_read_info(sc_socket device_socket, char *device_name, device_read_info(sc_socket device_socket, char *device_name,
struct size *size) { struct sc_size *size) {
unsigned char buf[DEVICE_NAME_FIELD_LENGTH + 4]; unsigned char buf[DEVICE_NAME_FIELD_LENGTH + 4];
ssize_t r = net_recv_all(device_socket, buf, sizeof(buf)); ssize_t r = net_recv_all(device_socket, buf, sizeof(buf));
if (r < DEVICE_NAME_FIELD_LENGTH + 4) { if (r < DEVICE_NAME_FIELD_LENGTH + 4) {
@ -447,7 +447,8 @@ device_read_info(sc_socket device_socket, char *device_name,
} }
bool bool
server_connect_to(struct server *server, char *device_name, struct size *size) { server_connect_to(struct server *server, char *device_name,
struct sc_size *size) {
if (!server->tunnel_forward) { if (!server->tunnel_forward) {
server->video_socket = net_accept(server->server_socket); server->video_socket = net_accept(server->server_socket);
if (server->video_socket == SC_INVALID_SOCKET) { if (server->video_socket == SC_INVALID_SOCKET) {

View file

@ -62,7 +62,8 @@ server_start(struct server *server, const struct server_params *params);
// block until the communication with the server is established // block until the communication with the server is established
// device_name must point to a buffer of at least DEVICE_NAME_FIELD_LENGTH bytes // device_name must point to a buffer of at least DEVICE_NAME_FIELD_LENGTH bytes
bool bool
server_connect_to(struct server *server, char *device_name, struct size *size); server_connect_to(struct server *server, char *device_name,
struct sc_size *size);
// disconnect and kill the server process // disconnect and kill the server process
void void

View file

@ -359,7 +359,7 @@ sc_v4l2_frame_sink_push(struct sc_frame_sink *sink, const AVFrame *frame) {
bool bool
sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name, sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
struct size frame_size, sc_tick buffering_time) { struct sc_size frame_size, sc_tick buffering_time) {
vs->device_name = strdup(device_name); vs->device_name = strdup(device_name);
if (!vs->device_name) { if (!vs->device_name) {
LOGE("Could not strdup v4l2 device name"); LOGE("Could not strdup v4l2 device name");

View file

@ -18,7 +18,7 @@ struct sc_v4l2_sink {
AVCodecContext *encoder_ctx; AVCodecContext *encoder_ctx;
char *device_name; char *device_name;
struct size frame_size; struct sc_size frame_size;
sc_tick buffering_time; sc_tick buffering_time;
sc_thread thread; sc_thread thread;
@ -34,7 +34,7 @@ struct sc_v4l2_sink {
bool bool
sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name, sc_v4l2_sink_init(struct sc_v4l2_sink *vs, const char *device_name,
struct size frame_size, sc_tick buffering_time); struct sc_size frame_size, sc_tick buffering_time);
void void
sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs); sc_v4l2_sink_destroy(struct sc_v4l2_sink *vs);