7fef283044
Increase _POSIX_SOURCE value where needed. Increase _XOPEN_SOURCE value where needed. Conditionally link to libcap (only on Linux). Possibly some trailing whitespace fixes (automatic).
278 lines
6.9 KiB
C
278 lines
6.9 KiB
C
#define _XOPEN_SOURCE 700
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#define _POSIX_C_SOURCE 199309L
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <math.h>
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#include <time.h>
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#include <json-c/json.h>
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#include "log.h"
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#include "ipc-client.h"
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#include "util.h"
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#include "swaygrab/json.h"
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void sway_terminate(int exit_code) {
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exit(exit_code);
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}
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void grab_and_apply_magick(const char *file, const char *payload,
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int socketfd, int raw) {
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uint32_t len = strlen(payload);
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char *pixels = ipc_single_command(socketfd,
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IPC_SWAY_GET_PIXELS, payload, &len);
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uint32_t *u32pixels = (uint32_t *)(pixels + 1);
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uint32_t width = u32pixels[0];
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uint32_t height = u32pixels[1];
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len -= 9;
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pixels += 9;
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if (width == 0 || height == 0) {
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// indicates geometry was clamped by WLC because it was outside of the output's area
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json_object *obj = json_tokener_parse(payload);
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json_object *output;
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json_object_object_get_ex(obj, "output", &output);
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const char *name = json_object_get_string(output);
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json_object_put(obj);
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sway_abort("Unknown output %s.", name);
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}
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if (raw) {
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fwrite(pixels, 1, len, stdout);
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fflush(stdout);
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free(pixels - 9);
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return;
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}
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const char *fmt = "convert -depth 8 -size %dx%d+0 rgba:- -flip %s";
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char *cmd = malloc(strlen(fmt) - 6 /*args*/
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+ numlen(width) + numlen(height) + strlen(file) + 1);
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sprintf(cmd, fmt, width, height, file);
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FILE *f = popen(cmd, "w");
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fwrite(pixels, 1, len, f);
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fflush(f);
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fclose(f);
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free(pixels - 9);
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free(cmd);
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}
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void grab_and_apply_movie_magic(const char *file, const char *payload,
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int socketfd, int raw, int framerate) {
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if (raw) {
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sway_log(L_ERROR, "Raw capture data is not yet supported. Proceeding with ffmpeg normally.");
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}
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uint32_t len = strlen(payload);
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char *pixels = ipc_single_command(socketfd,
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IPC_SWAY_GET_PIXELS, payload, &len);
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uint32_t *u32pixels = (uint32_t *)(pixels + 1);
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uint32_t width = u32pixels[0];
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uint32_t height = u32pixels[1];
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pixels += 9;
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if (width == 0 || height == 0) {
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// indicates geometry was clamped by WLC because it was outside of the output's area
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json_object *obj = json_tokener_parse(payload);
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json_object *output;
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json_object_object_get_ex(obj, "output", &output);
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const char *name = json_object_get_string(output);
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json_object_put(obj);
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sway_abort("Unknown output %s.", name);
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}
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const char *fmt = "ffmpeg -f rawvideo -framerate %d "
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"-video_size %dx%d -pixel_format argb "
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"-i pipe:0 -r %d -vf vflip %s";
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char *cmd = malloc(strlen(fmt) - 8 /*args*/
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+ numlen(width) + numlen(height) + numlen(framerate) * 2
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+ strlen(file) + 1);
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sprintf(cmd, fmt, framerate, width, height, framerate, file);
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long ns = (long)(1000000000 * (1.0 / framerate));
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struct timespec start, finish, ts;
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ts.tv_sec = 0;
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FILE *f = popen(cmd, "w");
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fwrite(pixels, 1, len, f);
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free(pixels - 9);
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int sleep = 0;
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while (sleep != -1) {
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clock_gettime(CLOCK_MONOTONIC, &start);
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len = strlen(payload);
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pixels = ipc_single_command(socketfd,
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IPC_SWAY_GET_PIXELS, payload, &len);
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pixels += 9;
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len -= 9;
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fwrite(pixels, 1, len, f);
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free(pixels - 9);
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clock_gettime(CLOCK_MONOTONIC, &finish);
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ts.tv_nsec = ns;
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double fts = (double)finish.tv_sec + 1.0e-9*finish.tv_nsec;
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double sts = (double)start.tv_sec + 1.0e-9*start.tv_nsec;
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long diff = (fts - sts) * 1000000000;
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ts.tv_nsec = ns - diff;
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if (ts.tv_nsec < 0) {
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ts.tv_nsec = 0;
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}
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sleep = nanosleep(&ts, NULL);
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}
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fflush(f);
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fclose(f);
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free(cmd);
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}
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char *default_filename(const char *extension) {
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int ext_len = strlen(extension);
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int len = 28 + ext_len; // format: "2015-12-17-180040_swaygrab.ext"
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char *filename = malloc(len * sizeof(char));
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time_t t = time(NULL);
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struct tm *lt = localtime(&t);
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strftime(filename, len, "%Y-%m-%d-%H%M%S_swaygrab.", lt);
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strncat(filename, extension, ext_len);
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return filename;
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}
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int main(int argc, char **argv) {
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static int capture = 0, raw = 0;
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char *socket_path = NULL;
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char *output = NULL;
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int framerate = 30;
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bool grab_focused = false;
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init_log(L_INFO);
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static struct option long_options[] = {
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{"help", no_argument, NULL, 'h'},
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{"capture", no_argument, NULL, 'c'},
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{"output", required_argument, NULL, 'o'},
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{"version", no_argument, NULL, 'v'},
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{"socket", required_argument, NULL, 's'},
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{"raw", no_argument, NULL, 'r'},
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{"rate", required_argument, NULL, 'R'},
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{"focused", no_argument, NULL, 'f'},
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{0, 0, 0, 0}
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};
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const char *usage =
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"Usage: swaygrab [options] [file]\n"
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"\n"
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" -h, --help Show help message and quit.\n"
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" -c, --capture Capture video.\n"
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" -o, --output <output> Output source.\n"
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" -v, --version Show the version number and quit.\n"
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" -s, --socket <socket> Use the specified socket.\n"
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" -R, --rate <rate> Specify framerate (default: 30)\n"
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" -r, --raw Write raw rgba data to stdout.\n"
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" -f, --focused Grab the focused container.\n";
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int c;
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while (1) {
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int option_index = 0;
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c = getopt_long(argc, argv, "hco:vs:R:rf", long_options, &option_index);
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if (c == -1) {
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break;
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}
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switch (c) {
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case 'f':
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grab_focused = true;
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break;
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case 's': // Socket
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socket_path = strdup(optarg);
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break;
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case 'r':
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raw = 1;
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break;
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case 'o': // output
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output = strdup(optarg);
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break;
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case 'c':
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capture = 1;
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break;
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case 'R': // Frame rate
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framerate = atoi(optarg);
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break;
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case 'v':
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fprintf(stdout, "sway version " SWAY_VERSION "\n");
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exit(EXIT_SUCCESS);
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break;
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default:
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fprintf(stderr, "%s", usage);
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exit(EXIT_FAILURE);
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}
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}
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if (!socket_path) {
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socket_path = get_socketpath();
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if (!socket_path) {
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sway_abort("Unable to retrieve socket path");
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}
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}
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char *file = NULL;
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if (raw) {
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if (optind >= argc + 1) {
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sway_abort("Invalid usage. See `man swaygrab` %d %d", argc, optind);
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}
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} else if (optind < argc) {
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file = strdup(argv[optind]);
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}
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int socketfd = ipc_open_socket(socket_path);
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free(socket_path);
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init_json_tree(socketfd);
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struct wlc_geometry *geo;
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if (grab_focused) {
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output = get_focused_output();
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json_object *con = get_focused_container();
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json_object *name;
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json_object_object_get_ex(con, "name", &name);
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geo = get_container_geometry(con);
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free(con);
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} else {
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if (!output) {
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output = get_focused_output();
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}
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geo = get_container_geometry(get_output_container(output));
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// the geometry of the output in the get_tree response is relative to a global (0, 0).
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// we need it to be relative to itself, so set origin to (0, 0) always.
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geo->origin.x = 0;
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geo->origin.y = 0;
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}
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const char *payload = create_payload(output, geo);
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free(geo);
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if (!file) {
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if (!capture) {
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file = default_filename("png");
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} else {
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file = default_filename("webm");
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}
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}
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if (!capture) {
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grab_and_apply_magick(file, payload, socketfd, raw);
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} else {
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grab_and_apply_movie_magic(file, payload, socketfd, raw, framerate);
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}
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free_json_tree();
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free(output);
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free(file);
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close(socketfd);
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return 0;
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}
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