scrcpy/app/src/main.c
Marco Martinelli d39161f753 Add support for v4l2loopback
It allows to send the video stream to /dev/videoN, so that it can be
captured (like a webcam) by any v4l2-capable tool.

PR #2232 <https://github.com/Genymobile/scrcpy/pull/2232>
PR #2233 <https://github.com/Genymobile/scrcpy/pull/2233>
PR #2268 <https://github.com/Genymobile/scrcpy/pull/2268>

Co-authored-by: Romain Vimont <rom@rom1v.com>
2021-04-25 14:59:10 +02:00

116 lines
3.2 KiB
C

#include "scrcpy.h"
#include "common.h"
#include <assert.h>
#include <stdbool.h>
#include <unistd.h>
#include <libavformat/avformat.h>
#ifdef HAVE_V4L2
# include <libavdevice/avdevice.h>
#endif
#define SDL_MAIN_HANDLED // avoid link error on Linux Windows Subsystem
#include <SDL2/SDL.h>
#include "cli.h"
#include "util/log.h"
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);
#ifdef HAVE_V4L2
fprintf(stderr, " - libavdevice %d.%d.%d\n", LIBAVDEVICE_VERSION_MAJOR,
LIBAVDEVICE_VERSION_MINOR,
LIBAVDEVICE_VERSION_MICRO);
#endif
}
static SDL_LogPriority
convert_log_level_to_sdl(enum sc_log_level level) {
switch (level) {
case SC_LOG_LEVEL_DEBUG:
return SDL_LOG_PRIORITY_DEBUG;
case SC_LOG_LEVEL_INFO:
return SDL_LOG_PRIORITY_INFO;
case SC_LOG_LEVEL_WARN:
return SDL_LOG_PRIORITY_WARN;
case SC_LOG_LEVEL_ERROR:
return SDL_LOG_PRIORITY_ERROR;
default:
assert(!"unexpected log level");
return SDL_LOG_PRIORITY_INFO;
}
}
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 scrcpy_cli_args args = {
.opts = SCRCPY_OPTIONS_DEFAULT,
.help = false,
.version = false,
};
#ifndef NDEBUG
args.opts.log_level = SC_LOG_LEVEL_DEBUG;
#endif
if (!scrcpy_parse_args(&args, argc, argv)) {
return 1;
}
SDL_LogPriority sdl_log = convert_log_level_to_sdl(args.opts.log_level);
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, sdl_log);
if (args.help) {
scrcpy_print_usage(argv[0]);
return 0;
}
if (args.version) {
print_version();
return 0;
}
LOGI("scrcpy " SCRCPY_VERSION " <https://github.com/Genymobile/scrcpy>");
#ifdef SCRCPY_LAVF_REQUIRES_REGISTER_ALL
av_register_all();
#endif
#ifdef HAVE_V4L2
if (args.opts.v4l2_device) {
avdevice_register_all();
}
#endif
if (avformat_network_init()) {
return 1;
}
int res = scrcpy(&args.opts) ? 0 : 1;
avformat_network_deinit(); // ignore failure
return res;
}