scrcpy/app/src/main.c

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#include "scrcpy.h"
#include <getopt.h>
#include <stdbool.h>
#include <stdint.h>
#include <unistd.h>
#include <libavformat/avformat.h>
#define SDL_MAIN_HANDLED // avoid link error on Linux Windows Subsystem
#include <SDL2/SDL.h>
#include "compat.h"
#include "config.h"
#include "log.h"
#include "recorder.h"
struct args {
const char *serial;
const char *crop;
const char *record_filename;
enum recorder_format record_format;
bool fullscreen;
bool no_control;
bool no_display;
bool help;
bool version;
bool show_touches;
uint16_t port;
uint16_t max_size;
uint32_t bit_rate;
bool always_on_top;
bool turn_screen_off;
bool render_expired_frames;
};
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"
" -c, --crop width:height:x:y\n"
" Crop the device screen on the server.\n"
" The values are expressed in the device natural orientation\n"
" (typically, portrait for a phone, landscape for a tablet).\n"
" Any --max-size value is computed on the cropped size.\n"
"\n"
" -f, --fullscreen\n"
" Start in fullscreen.\n"
"\n"
" -F, --record-format\n"
" Force recording format (either mp4 or mkv).\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"
" -n, --no-control\n"
" Disable device control (mirror the device in read-only).\n"
"\n"
" -N, --no-display\n"
" Do not display device (only when screen recording is\n"
" enabled).\n"
"\n"
" -p, --port port\n"
" Set the TCP port the client listens on.\n"
" Default is %d.\n"
"\n"
" -r, --record file.mp4\n"
" Record screen to file.\n"
" The format is determined by the -F/--record-format option if\n"
" set, or by the file extension (.mp4 or .mkv).\n"
"\n"
" --render-expired-frames\n"
" By default, to minimize latency, scrcpy always renders the\n"
" last available decoded frame, and drops any previous ones.\n"
" This flag forces to render all frames, at a cost of a\n"
" possible increased latency.\n"
"\n"
" -s, --serial serial\n"
" The device serial number. Mandatory only if several devices\n"
" are connected to adb.\n"
"\n"
" -S, --turn-screen-off\n"
" Turn the device screen off immediately.\n"
"\n"
" -t, --show-touches\n"
" Enable \"show touches\" on start, disable on quit.\n"
" It only shows physical touches (not clicks from scrcpy).\n"
"\n"
" -T, --always-on-top\n"
" Make scrcpy window always on top (above other windows).\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"
" Double-click on black borders\n"
" resize window to remove black borders\n"
"\n"
" Ctrl+h\n"
" Middle-click\n"
" click on HOME\n"
"\n"
" Ctrl+b\n"
" Ctrl+Backspace\n"
" Right-click (when screen is on)\n"
" click on BACK\n"
"\n"
" Ctrl+s\n"
" click on APP_SWITCH\n"
"\n"
" Ctrl+m\n"
" click on MENU\n"
"\n"
" Ctrl+Up\n"
" click on VOLUME_UP\n"
"\n"
" Ctrl+Down\n"
" click on VOLUME_DOWN\n"
"\n"
" Ctrl+p\n"
" click on POWER (turn screen on/off)\n"
"\n"
" Right-click (when screen is off)\n"
" power on\n"
"\n"
" Ctrl+o\n"
" turn device screen off (keep mirroring)\n"
"\n"
" Ctrl+n\n"
" expand notification panel\n"
"\n"
" Ctrl+Shift+n\n"
" collapse notification panel\n"
"\n"
" Ctrl+c\n"
" copy device clipboard to computer\n"
"\n"
" Ctrl+v\n"
" paste computer clipboard to device\n"
"\n"
" Ctrl+Shift+v\n"
" copy computer clipboard to device\n"
"\n"
" Ctrl+i\n"
" enable/disable FPS counter (print frames/second in logs)\n"
"\n"
" Drag & drop APK file\n"
" install APK from computer\n"
"\n",
arg0,
DEFAULT_BIT_RATE,
DEFAULT_MAX_SIZE, DEFAULT_MAX_SIZE ? "" : " (unlimited)",
DEFAULT_LOCAL_PORT);
}
static void
print_version(void) {
fprintf(stderr, "scrcpy %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, " - 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 bool
parse_bit_rate(char *optarg, uint32_t *bit_rate) {
char *endptr;
if (*optarg == '\0') {
LOGE("Bit-rate parameter is empty");
return false;
}
long value = strtol(optarg, &endptr, 0);
int mul = 1;
if (*endptr != '\0') {
if (optarg == endptr) {
LOGE("Invalid bit-rate: %s", optarg);
return 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 false;
}
}
if (value < 0 || ((uint32_t) -1) / mul < value) {
LOGE("Bitrate must be positive and less than 2^32: %s", optarg);
return false;
}
*bit_rate = (uint32_t) value * mul;
return true;
}
static bool
parse_max_size(char *optarg, uint16_t *max_size) {
char *endptr;
if (*optarg == '\0') {
LOGE("Max size parameter is empty");
return false;
}
long value = strtol(optarg, &endptr, 0);
if (*endptr != '\0') {
LOGE("Invalid max size: %s", optarg);
return false;
}
if (value & ~0xffff) {
LOGE("Max size must be between 0 and 65535: %ld", value);
return false;
}
*max_size = (uint16_t) value;
return true;
}
static bool
parse_port(char *optarg, uint16_t *port) {
char *endptr;
if (*optarg == '\0') {
LOGE("Invalid port parameter is empty");
return false;
}
long value = strtol(optarg, &endptr, 0);
if (*endptr != '\0') {
LOGE("Invalid port: %s", optarg);
return false;
}
if (value & ~0xffff) {
LOGE("Port out of range: %ld", value);
return false;
}
*port = (uint16_t) value;
return true;
}
static bool
parse_record_format(const char *optarg, enum recorder_format *format) {
if (!strcmp(optarg, "mp4")) {
*format = RECORDER_FORMAT_MP4;
return true;
}
if (!strcmp(optarg, "mkv")) {
*format = RECORDER_FORMAT_MKV;
return true;
}
LOGE("Unsupported format: %s (expected mp4 or mkv)", optarg);
return false;
}
static enum recorder_format
guess_record_format(const char *filename) {
size_t len = strlen(filename);
if (len < 4) {
return 0;
}
const char *ext = &filename[len - 4];
if (!strcmp(ext, ".mp4")) {
return RECORDER_FORMAT_MP4;
}
if (!strcmp(ext, ".mkv")) {
return RECORDER_FORMAT_MKV;
}
return 0;
}
#define OPT_RENDER_EXPIRED_FRAMES 1000
static bool
parse_args(struct args *args, int argc, char *argv[]) {
static const struct option long_options[] = {
{"always-on-top", no_argument, NULL, 'T'},
{"bit-rate", required_argument, NULL, 'b'},
{"crop", required_argument, NULL, 'c'},
{"fullscreen", no_argument, NULL, 'f'},
{"help", no_argument, NULL, 'h'},
{"max-size", required_argument, NULL, 'm'},
{"no-control", no_argument, NULL, 'n'},
{"no-display", no_argument, NULL, 'N'},
{"port", required_argument, NULL, 'p'},
{"record", required_argument, NULL, 'r'},
{"record-format", required_argument, NULL, 'f'},
{"render-expired-frames", no_argument, NULL,
OPT_RENDER_EXPIRED_FRAMES},
{"serial", required_argument, NULL, 's'},
{"show-touches", no_argument, NULL, 't'},
{"turn-screen-off", no_argument, NULL, 'S'},
{"version", no_argument, NULL, 'v'},
{NULL, 0, NULL, 0 },
};
int c;
while ((c = getopt_long(argc, argv, "b:c:fF:hm:nNp:r:s:StTv", long_options,
NULL)) != -1) {
switch (c) {
case 'b':
if (!parse_bit_rate(optarg, &args->bit_rate)) {
return false;
}
break;
case 'c':
args->crop = optarg;
break;
case 'f':
args->fullscreen = true;
break;
case 'F':
if (!parse_record_format(optarg, &args->record_format)) {
return false;
}
break;
case 'h':
args->help = true;
break;
case 'm':
if (!parse_max_size(optarg, &args->max_size)) {
return false;
}
break;
case 'n':
args->no_control = true;
break;
case 'N':
args->no_display = true;
break;
case 'p':
if (!parse_port(optarg, &args->port)) {
return false;
}
break;
case 'r':
args->record_filename = optarg;
break;
case 's':
args->serial = optarg;
break;
case 'S':
args->turn_screen_off = true;
break;
case 't':
args->show_touches = true;
break;
case 'T':
args->always_on_top = true;
break;
case 'v':
args->version = true;
break;
case OPT_RENDER_EXPIRED_FRAMES:
args->render_expired_frames = true;
break;
default:
// getopt prints the error message on stderr
return false;
}
}
if (args->no_display && !args->record_filename) {
LOGE("-N/--no-display requires screen recording (-r/--record)");
return false;
}
if (args->no_display && args->fullscreen) {
LOGE("-f/--fullscreen-window is incompatible with -N/--no-display");
return false;
}
int index = optind;
if (index < argc) {
LOGE("Unexpected additional argument: %s", argv[index]);
return false;
}
if (args->record_format && !args->record_filename) {
LOGE("Record format specified without recording");
return false;
}
if (args->record_filename && !args->record_format) {
args->record_format = guess_record_format(args->record_filename);
if (!args->record_format) {
LOGE("No format specified for \"%s\" (try with -F mkv)",
args->record_filename);
return false;
}
}
if (args->no_control && args->turn_screen_off) {
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LOGE("Could not request to turn screen off if control is disabled");
return false;
}
return true;
}
int
main(int argc, char *argv[]) {
#ifdef __WINDOWS__
// disable buffering, we want logs immediately
// even line buffering (setvbuf() with mode _IOLBF) is not sufficient
setbuf(stdout, NULL);
setbuf(stderr, NULL);
#endif
struct args args = {
.serial = NULL,
.crop = NULL,
.record_filename = NULL,
.record_format = 0,
.help = false,
.version = false,
.show_touches = false,
.port = DEFAULT_LOCAL_PORT,
.max_size = DEFAULT_MAX_SIZE,
.bit_rate = DEFAULT_BIT_RATE,
.always_on_top = false,
.no_control = false,
.no_display = false,
.turn_screen_off = false,
.render_expired_frames = false,
};
if (!parse_args(&args, argc, argv)) {
return 1;
}
if (args.help) {
usage(argv[0]);
return 0;
}
if (args.version) {
print_version();
return 0;
}
#ifdef SCRCPY_LAVF_REQUIRES_REGISTER_ALL
av_register_all();
#endif
if (avformat_network_init()) {
return 1;
}
#ifdef BUILD_DEBUG
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_DEBUG);
#endif
struct scrcpy_options options = {
.serial = args.serial,
.crop = args.crop,
.port = args.port,
.record_filename = args.record_filename,
.record_format = args.record_format,
.max_size = args.max_size,
.bit_rate = args.bit_rate,
.show_touches = args.show_touches,
.fullscreen = args.fullscreen,
.always_on_top = args.always_on_top,
.control = !args.no_control,
.display = !args.no_display,
.turn_screen_off = args.turn_screen_off,
.render_expired_frames = args.render_expired_frames,
};
int res = scrcpy(&options) ? 0 : 1;
avformat_network_deinit(); // ignore failure
#if defined (__WINDOWS__) && ! defined (WINDOWS_NOCONSOLE)
if (res != 0) {
fprintf(stderr, "Press any key to continue...\n");
getchar();
}
#endif
return res;
}