scrcpy/app/src/main.c

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#include "scrcpy.h"
#include <getopt.h>
#include <unistd.h>
#include <libavformat/avformat.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_net.h>
#include "config.h"
#include "log.h"
struct args {
const char *serial;
SDL_bool help;
SDL_bool version;
Uint16 port;
Uint16 max_size;
Uint32 bit_rate;
};
static void usage(const char *arg0) {
fprintf(stderr,
"Usage: %s [options]\n"
"\n"
"Options:\n"
"\n"
" -b, --bit-rate value\n"
" Encode the video at the given bit-rate, expressed in bits/s.\n"
" Unit suffixes are supported: 'K' (x1000) and 'M' (x1000000).\n"
" Default is %d.\n"
"\n"
" -h, --help\n"
" Print this help.\n"
"\n"
" -m, --max-size value\n"
" Limit both the width and height of the video to value. The\n"
" other dimension is computed so that the device aspect-ratio\n"
" is preserved.\n"
" Default is %d%s.\n"
"\n"
" -p, --port port\n"
" Set the TCP port the client listens on.\n"
" Default is %d.\n"
"\n"
" -s, --serial\n"
" The device serial number. Mandatory only if several devices\n"
" are connected to adb.\n"
"\n"
" -v, --version\n"
" Print the version of scrcpy.\n"
"\n"
"Shortcuts:\n"
"\n"
" Ctrl+f\n"
" switch fullscreen mode\n"
"\n"
" Ctrl+g\n"
" resize window to 1:1 (pixel-perfect)\n"
"\n"
" Ctrl+x\n"
" resize window to optimal size (remove black borders)\n"
"\n"
" Ctrl+h\n"
" Home\n"
" click on HOME\n"
"\n"
" Ctrl+b\n"
" Ctrl+Backspace\n"
" click on BACK\n"
"\n"
" Ctrl+m\n"
" click on APP_SWITCH\n"
"\n"
" Ctrl+'+'\n"
" click on VOLUME_UP\n"
"\n"
" Ctrl+'-'\n"
" click on VOLUME_DOWN\n"
"\n"
" Ctrl+p\n"
" click on POWER (turn screen on/off)\n"
"\n"
" Right-click\n"
" turn screen on\n"
"\n"
" Ctrl+i\n"
" enable/disable FPS counter (print frames/second in logs)\n"
"\n",
arg0,
DEFAULT_BIT_RATE,
DEFAULT_MAX_SIZE, DEFAULT_MAX_SIZE ? "" : " (unlimited)",
DEFAULT_LOCAL_PORT);
}
static void print_version(void) {
fprintf(stderr, "scrcpy v%s\n\n", SCRCPY_VERSION);
fprintf(stderr, "dependencies:\n");
fprintf(stderr, " - SDL %d.%d.%d\n", SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
fprintf(stderr, " - SDL_net %d.%d.%d\n", SDL_NET_MAJOR_VERSION, SDL_NET_MINOR_VERSION, SDL_NET_PATCHLEVEL);
fprintf(stderr, " - libavcodec %d.%d.%d\n", LIBAVCODEC_VERSION_MAJOR, LIBAVCODEC_VERSION_MINOR, LIBAVCODEC_VERSION_MICRO);
fprintf(stderr, " - libavformat %d.%d.%d\n", LIBAVFORMAT_VERSION_MAJOR, LIBAVFORMAT_VERSION_MINOR, LIBAVFORMAT_VERSION_MICRO);
fprintf(stderr, " - libavutil %d.%d.%d\n", LIBAVUTIL_VERSION_MAJOR, LIBAVUTIL_VERSION_MINOR, LIBAVUTIL_VERSION_MICRO);
}
static SDL_bool parse_bit_rate(char *optarg, Uint32 *bit_rate) {
char *endptr;
if (*optarg == '\0') {
LOGE("Bit-rate parameter is empty");
return SDL_FALSE;
}
long value = strtol(optarg, &endptr, 0);
int mul = 1;
if (*endptr != '\0') {
if (optarg == endptr) {
LOGE("Invalid bit-rate: %s", optarg);
return SDL_FALSE;
}
if ((*endptr == 'M' || *endptr == 'm') && endptr[1] == '\0') {
mul = 1000000;
} else if ((*endptr == 'K' || *endptr == 'k') && endptr[1] == '\0') {
mul = 1000;
} else {
LOGE("Invalid bit-rate unit: %s", optarg);
return SDL_FALSE;
}
}
if (value < 0 || ((Uint32) -1) / mul < value) {
LOGE("Bitrate must be positive and less than 2^32: %s", optarg);
return SDL_FALSE;
}
*bit_rate = (Uint32) value * mul;
return SDL_TRUE;
}
static SDL_bool parse_max_size(char *optarg, Uint16 *max_size) {
char *endptr;
if (*optarg == '\0') {
LOGE("Max size parameter is empty");
return SDL_FALSE;
}
long value = strtol(optarg, &endptr, 0);
if (*endptr != '\0') {
LOGE("Invalid max size: %s", optarg);
return SDL_FALSE;
}
if (value & ~0xffff) {
LOGE("Max size must be between 0 and 65535: %ld", value);
return SDL_FALSE;
}
*max_size = (Uint16) value;
return SDL_TRUE;
}
static SDL_bool parse_port(char *optarg, Uint16 *port) {
char *endptr;
if (*optarg == '\0') {
LOGE("Invalid port parameter is empty");
return SDL_FALSE;
}
long value = strtol(optarg, &endptr, 0);
if (*endptr != '\0') {
LOGE("Invalid port: %s", optarg);
return SDL_FALSE;
}
if (value & ~0xffff) {
LOGE("Port out of range: %ld", value);
return SDL_FALSE;
}
*port = (Uint16) value;
return SDL_TRUE;
}
static SDL_bool parse_args(struct args *args, int argc, char *argv[]) {
static const struct option long_options[] = {
{"bit-rate", required_argument, NULL, 'b'},
{"help", no_argument, NULL, 'h'},
{"max-size", required_argument, NULL, 'm'},
{"port", required_argument, NULL, 'p'},
{"serial", required_argument, NULL, 's'},
{"version", no_argument, NULL, 'v'},
{NULL, 0, NULL, 0 },
};
int c;
while ((c = getopt_long(argc, argv, "b:hm:p:s:v", long_options, NULL)) != -1) {
switch (c) {
case 'b': {
if (!parse_bit_rate(optarg, &args->bit_rate)) {
return SDL_FALSE;
}
break;
}
case 'h': {
args->help = SDL_TRUE;
break;
}
case 'm': {
if (!parse_max_size(optarg, &args->max_size)) {
return SDL_FALSE;
}
break;
}
case 'p': {
if (!parse_port(optarg, &args->port)) {
return SDL_FALSE;
}
break;
}
case 's': {
args->serial = optarg;
break;
}
case 'v': {
args->version = SDL_TRUE;
break;
}
default:
// getopt prints the error message on stderr
return SDL_FALSE;
}
}
int index = optind;
if (index < argc) {
LOGE("Unexpected additional argument: %s", argv[index]);
return SDL_FALSE;
}
return SDL_TRUE;
}
int main(int argc, char *argv[]) {
struct args args = {
.serial = NULL,
.help = SDL_FALSE,
.version = SDL_FALSE,
.port = DEFAULT_LOCAL_PORT,
.max_size = DEFAULT_MAX_SIZE,
.bit_rate = DEFAULT_BIT_RATE,
};
if (!parse_args(&args, argc, argv)) {
return 1;
}
if (args.help) {
usage(argv[0]);
return 0;
}
if (args.version) {
print_version();
return 0;
}
av_register_all();
if (avformat_network_init()) {
return 1;
}
#ifdef BUILD_DEBUG
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_DEBUG);
#endif
int res = scrcpy(args.serial, args.port, args.max_size, args.bit_rate) ? 0 : 1;
avformat_network_deinit(); // ignore failure
return res;
}