scrcpy/app/src/scrcpy.c

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#include "screen.h"
#include <unistd.h>
#include <libavformat/avformat.h>
#include <SDL2/SDL.h>
#define DEFAULT_LOCAL_PORT 27183
struct args {
const char *serial;
Uint16 port;
};
int parse_args(struct args *args, int argc, char *argv[]) {
int c;
while ((c = getopt(argc, argv, "p:")) != -1) {
switch (c) {
case 'p': {
char *endptr;
long int value = strtol(optarg, &endptr, 0);
if (*optarg == '\0' || *endptr != '\0') {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Invalid port: %s\n", optarg);
return -1;
}
if (value & ~0xffff) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Port out of range: %ld\n", value);
return -1;
}
args->port = (Uint16) value;
break;
}
default:
// getopt prints the error message on stderr
return -1;
}
}
int index = optind;
if (index < argc) {
args->serial = argv[index++];
}
if (index < argc) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unexpected additional argument: %s\n", argv[index]);
return -1;
}
return 0;
}
int main(int argc, char *argv[]) {
int res;
struct args args = {
.serial = NULL,
.port = DEFAULT_LOCAL_PORT,
};
if (parse_args(&args, argc, argv)) {
return 1;
}
av_register_all();
if (avformat_network_init()) {
return 1;
}
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_DEBUG);
res = show_screen(args.serial, args.port) ? 0 : 1;
avformat_network_deinit(); // ignore failure
return res;
}