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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <stdint.h>
#include <math.h>
#include <time.h>
#include "log.h"
#include "ipc-client.h"
#include "util.h"
void sway_terminate(void) {
exit(EXIT_FAILURE);
}
void grab_and_apply_magick(const char *file, const char *output,
int socketfd, int raw) {
uint32_t len = strlen(output);
char *pixels = ipc_single_command(socketfd,
IPC_SWAY_GET_PIXELS, output, &len);
uint32_t *u32pixels = (uint32_t *)(pixels + 1);
uint32_t width = u32pixels[0];
uint32_t height = u32pixels[1];
len -= 9;
pixels += 9;
if (width == 0 || height == 0) {
sway_abort("Unknown output %s.", output);
}
if (raw) {
fwrite(pixels, 1, len, stdout);
fflush(stdout);
free(pixels - 9);
return;
}
const char *fmt = "convert -depth 8 -size %dx%d+0 rgba:- -flip %s";
char *cmd = malloc(strlen(fmt) - 6 /*args*/
+ numlen(width) + numlen(height) + strlen(file) + 1);
sprintf(cmd, fmt, width, height, file);
FILE *f = popen(cmd, "w");
fwrite(pixels, 1, len, f);
fflush(f);
fclose(f);
free(pixels - 9);
free(cmd);
}
void grab_and_apply_movie_magic(const char *file, const char *output,
int socketfd, int raw, int framerate) {
if (raw) {
sway_log(L_ERROR, "Raw capture data is not yet supported. Proceeding with ffmpeg normally.");
}
uint32_t len = strlen(output);
char *pixels = ipc_single_command(socketfd,
IPC_SWAY_GET_PIXELS, output, &len);
uint32_t *u32pixels = (uint32_t *)(pixels + 1);
uint32_t width = u32pixels[0];
uint32_t height = u32pixels[1];
pixels += 9;
if (width == 0 || height == 0) {
sway_abort("Unknown output %s.", output);
}
const char *fmt = "ffmpeg -f rawvideo -framerate %d "
"-video_size %dx%d -pixel_format argb "
"-i pipe:0 -r %d -vf vflip %s";
char *cmd = malloc(strlen(fmt) - 8 /*args*/
+ numlen(width) + numlen(height) + numlen(framerate) * 2
+ strlen(file) + 1);
sprintf(cmd, fmt, framerate, width, height, framerate, file);
long ns = (long)(1000000000 * (1.0 / framerate));
struct timespec start, finish, ts;
ts.tv_sec = 0;
FILE *f = popen(cmd, "w");
fwrite(pixels, 1, len, f);
free(pixels - 9);
int sleep = 0;
while (sleep != -1) {
clock_gettime(CLOCK_MONOTONIC, &start);
len = strlen(output);
pixels = ipc_single_command(socketfd,
IPC_SWAY_GET_PIXELS, output, &len);
pixels += 9;
len -= 9;
fwrite(pixels, 1, len, f);
clock_gettime(CLOCK_MONOTONIC, &finish);
ts.tv_nsec = ns;
double fts = (double)finish.tv_sec + 1.0e-9*finish.tv_nsec;
double sts = (double)start.tv_sec + 1.0e-9*start.tv_nsec;
long diff = (fts - sts) * 1000000000;
ts.tv_nsec = ns - diff;
if (ts.tv_nsec < 0) {
ts.tv_nsec = 0;
}
sleep = nanosleep(&ts, NULL);
}
fflush(f);
fclose(f);
free(cmd);
}
int main(int argc, char **argv) {
static int capture = 0, raw = 0;
char *socket_path = NULL;
int framerate = 30;
init_log(L_INFO);
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"capture", no_argument, NULL, 'c'},
{"version", no_argument, NULL, 'v'},
{"socket", required_argument, NULL, 's'},
{"raw", no_argument, NULL, 'r'},
{"rate", required_argument, NULL, 'R'},
{0, 0, 0, 0}
};
const char *usage =
"Usage: swaygrab [options] <output> [file]\n"
"\n"
" -h, --help Show help message and quit.\n"
" -c, --capture Capture video.\n"
" -v, --version Show the version number and quit.\n"
" -s, --socket <socket> Use the specified socket.\n"
" -R, --rate <rate> Specify framerate (default: 30)\n"
" -r, --raw Write raw rgba data to stdout.\n";
int c;
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "hcvs:r", long_options, &option_index);
if (c == -1) {
break;
}
switch (c) {
case 's': // Socket
socket_path = strdup(optarg);
break;
case 'r':
raw = 1;
break;
case 'c':
capture = 1;
break;
case 'R': // Frame rate
framerate = atoi(optarg);
break;
case 'v':
#if defined SWAY_GIT_VERSION && defined SWAY_GIT_BRANCH && defined SWAY_VERSION_DATE
fprintf(stdout, "sway version %s (%s, branch \"%s\")\n", SWAY_GIT_VERSION, SWAY_VERSION_DATE, SWAY_GIT_BRANCH);
#else
fprintf(stdout, "version not detected\n");
#endif
exit(EXIT_SUCCESS);
break;
default:
fprintf(stderr, "%s", usage);
exit(EXIT_FAILURE);
}
}
if (!socket_path) {
socket_path = get_socketpath();
if (!socket_path) {
sway_abort("Unable to retrieve socket path");
}
}
char *file = NULL, *output = NULL;
if (raw) {
if (optind >= argc) {
sway_abort("Invalid usage. See `man swaygrab` %d %d", argc, optind);
}
output = argv[optind];
} else {
if (optind >= argc - 1) {
sway_abort("Invalid usage. See `man swaygrab`");
}
file = argv[optind + 1];
output = argv[optind];
}
int socketfd = ipc_open_socket(socket_path);
free(socket_path);
if (!capture) {
grab_and_apply_magick(file, output, socketfd, raw);
} else {
grab_and_apply_movie_magic(file, output, socketfd, raw, framerate);
}
close(socketfd);
return 0;
}
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