Remove swaygrab entirely

We'll have to rewrite this later.
master
Drew DeVault 7 years ago
parent 22f52b91ed
commit 167f7c54f4

@ -1,144 +0,0 @@
#define _XOPEN_SOURCE 700
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include "log.h"
#include "ipc-client.h"
#include "swaygrab/json.h"
static json_object *tree;
void init_json_tree(int socketfd) {
uint32_t len = 0;
char *res = ipc_single_command(socketfd, IPC_GET_TREE, NULL, &len);
struct json_tokener *tok = json_tokener_new_ex(256);
if (!tok) {
sway_abort("Unable to get json tokener.");
}
tree = json_tokener_parse_ex(tok, res, len);
if (!tree || tok->err != json_tokener_success) {
sway_abort("Unable to parse IPC response as JSON: %s", json_tokener_error_desc(tok->err));
}
json_object *success;
json_object_object_get_ex(tree, "success", &success);
if (success && !json_object_get_boolean(success)) {
json_object *error;
json_object_object_get_ex(tree, "error", &error);
sway_abort("IPC request failed: %s", json_object_get_string(error));
}
json_object_put(success);
json_tokener_free(tok);
}
void free_json_tree() {
json_object_put(tree);
}
static bool is_focused(json_object *c) {
json_object *focused;
json_object_object_get_ex(c, "focused", &focused);
return json_object_get_boolean(focused);
}
static json_object *get_focused_container_r(json_object *c) {
json_object *name;
json_object_object_get_ex(c, "name", &name);
if (is_focused(c)) {
return c;
} else {
json_object *nodes, *node, *child;
json_object_object_get_ex(c, "nodes", &nodes);
int i;
for (i = 0; i < json_object_array_length(nodes); i++) {
node = json_object_array_get_idx(nodes, i);
if ((child = get_focused_container_r(node))) {
return child;
}
}
json_object_object_get_ex(c, "floating_nodes", &nodes);
for (i = 0; i < json_object_array_length(nodes); i++) {
node = json_object_array_get_idx(nodes, i);
if ((child = get_focused_container_r(node))) {
return child;
}
}
}
return NULL;
}
json_object *get_focused_container() {
return get_focused_container_r(tree);
}
char *get_focused_output() {
json_object *outputs, *output, *name;
json_object_object_get_ex(tree, "nodes", &outputs);
if (!outputs) {
sway_abort("Unabled to get focused output. No nodes in tree.");
}
for (int i = 0; i < json_object_array_length(outputs); i++) {
output = json_object_array_get_idx(outputs, i);
if (get_focused_container_r(output)) {
json_object_object_get_ex(output, "name", &name);
return strdup(json_object_get_string(name));
}
}
return NULL;
}
char *create_payload(const char *output, struct wlc_geometry *g) {
char *payload_str = malloc(256);
json_object *payload = json_object_new_object();
json_object_object_add(payload, "output", json_object_new_string(output));
json_object_object_add(payload, "x", json_object_new_int(g->origin.x));
json_object_object_add(payload, "y", json_object_new_int(g->origin.y));
json_object_object_add(payload, "w", json_object_new_int(g->size.w));
json_object_object_add(payload, "h", json_object_new_int(g->size.h));
snprintf(payload_str, 256, "%s", json_object_to_json_string(payload));
return strdup(payload_str);
}
struct wlc_geometry *get_container_geometry(json_object *container) {
struct wlc_geometry *geo = malloc(sizeof(struct wlc_geometry));
json_object *rect, *x, *y, *w, *h;
json_object_object_get_ex(container, "rect", &rect);
json_object_object_get_ex(rect, "x", &x);
json_object_object_get_ex(rect, "y", &y);
json_object_object_get_ex(rect, "width", &w);
json_object_object_get_ex(rect, "height", &h);
geo->origin.x = json_object_get_int(x);
geo->origin.y = json_object_get_int(y);
geo->size.w = json_object_get_int(w);
geo->size.h = json_object_get_int(h);
return geo;
}
json_object *get_output_container(const char *output) {
json_object *outputs, *json_output, *name;
json_object_object_get_ex(tree, "nodes", &outputs);
for (int i = 0; i < json_object_array_length(outputs); i++) {
json_output = json_object_array_get_idx(outputs, i);
json_object_object_get_ex(json_output, "name", &name);
if (strcmp(json_object_get_string(name), output) == 0) {
return json_output;
}
}
return NULL;
}

@ -1,298 +0,0 @@
#define _XOPEN_SOURCE 700
#define _POSIX_C_SOURCE 199309L
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <stdint.h>
#include <math.h>
#include <time.h>
#include <sys/wait.h>
#include <json-c/json.h>
#include "log.h"
#include "ipc-client.h"
#include "util.h"
#include "swaygrab/json.h"
void sway_terminate(int exit_code) {
exit(exit_code);
}
void grab_and_apply_magick(const char *file, const char *payload,
int socketfd, int raw) {
uint32_t len = strlen(payload);
char *pixels = ipc_single_command(socketfd,
IPC_SWAY_GET_PIXELS, payload, &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) {
// indicates geometry was clamped by WLC because it was outside of the output's area
json_object *obj = json_tokener_parse(payload);
json_object *output;
json_object_object_get_ex(obj, "output", &output);
const char *name = json_object_get_string(output);
json_object_put(obj);
sway_abort("Unknown output %s.", name);
}
if (raw) {
fwrite(pixels, 1, len, stdout);
fflush(stdout);
free(pixels - 9);
return;
}
char size[10 + 1 + 10 + 2 + 1]; // int32_t are max 10 digits
sprintf(size, "%dx%d+0", width, height);
pid_t child;
int fd[2];
pipe(fd);
if ((child = fork()) < 0) {
sway_log(L_ERROR, "Swaygrab failed to fork.");
exit(EXIT_FAILURE);
} else if (child != 0) {
close(fd[0]);
write(fd[1], pixels, len);
close(fd[1]);
free(pixels - 9);
waitpid(child, NULL, 0);
} else {
close(fd[1]);
if (dup2(fd[0], 0) != 0) {
sway_log(L_ERROR, "Could not fdup the pipe");
}
close(fd[0]);
execlp("convert", "convert", "-depth", "8", "-size", size, "rgba:-", "-flip", file, NULL);
sway_log(L_ERROR, "Swaygrab could not run convert.");
exit(EXIT_FAILURE);
}
}
void grab_and_apply_movie_magic(const char *file, const char *payload,
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(payload);
char *pixels = ipc_single_command(socketfd,
IPC_SWAY_GET_PIXELS, payload, &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) {
// indicates geometry was clamped by WLC because it was outside of the output's area
json_object *obj = json_tokener_parse(payload);
json_object *output;
json_object_object_get_ex(obj, "output", &output);
const char *name = json_object_get_string(output);
json_object_put(obj);
sway_abort("Unknown output %s.", name);
}
char *ffmpeg_opts = getenv("SWAYGRAB_FFMPEG_OPTS");
if(!ffmpeg_opts) {
ffmpeg_opts = "";
}
const char *fmt = "ffmpeg %s -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*/
+ strlen(ffmpeg_opts) + numlen(width) + numlen(height)
+ numlen(framerate) * 2 + strlen(file) + 1);
sprintf(cmd, fmt, ffmpeg_opts, 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(payload);
pixels = ipc_single_command(socketfd,
IPC_SWAY_GET_PIXELS, payload, &len);
pixels += 9;
len -= 9;
fwrite(pixels, 1, len, f);
free(pixels - 9);
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);
}
char *default_filename(const char *extension) {
int ext_len = strlen(extension);
int len = 28 + ext_len; // format: "2015-12-17-180040_swaygrab.ext"
char *filename = malloc(len * sizeof(char));
time_t t = time(NULL);
struct tm *lt = localtime(&t);
strftime(filename, len, "%Y-%m-%d-%H%M%S_swaygrab.", lt);
strncat(filename, extension, ext_len);
return filename;
}
int main(int argc, char **argv) {
static int capture = 0, raw = 0;
char *socket_path = NULL;
char *output = NULL;
int framerate = 30;
bool grab_focused = false;
init_log(L_INFO);
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"capture", no_argument, NULL, 'c'},
{"output", required_argument, NULL, 'o'},
{"version", no_argument, NULL, 'v'},
{"socket", required_argument, NULL, 's'},
{"raw", no_argument, NULL, 'r'},
{"rate", required_argument, NULL, 'R'},
{"focused", no_argument, NULL, 'f'},
{0, 0, 0, 0}
};
const char *usage =
"Usage: swaygrab [options] [file]\n"
"\n"
" -h, --help Show help message and quit.\n"
" -c, --capture Capture video.\n"
" -o, --output <output> Output source.\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"
" -f, --focused Grab the focused container.\n";
int c;
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "hco:vs:R:rf", long_options, &option_index);
if (c == -1) {
break;
}
switch (c) {
case 'f':
grab_focused = true;
break;
case 's': // Socket
socket_path = strdup(optarg);
break;
case 'r':
raw = 1;
break;
case 'o': // output
output = strdup(optarg);
break;
case 'c':
capture = 1;
break;
case 'R': // Frame rate
framerate = atoi(optarg);
break;
case 'v':
fprintf(stdout, "sway version " SWAY_VERSION "\n");
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;
if (raw) {
if (optind >= argc + 1) {
sway_abort("Invalid usage. See `man swaygrab` %d %d", argc, optind);
}
} else if (optind < argc) {
file = strdup(argv[optind]);
}
int socketfd = ipc_open_socket(socket_path);
free(socket_path);
init_json_tree(socketfd);
struct wlc_geometry *geo;
if (grab_focused) {
output = get_focused_output();
json_object *con = get_focused_container();
json_object *name;
json_object_object_get_ex(con, "name", &name);
geo = get_container_geometry(con);
free(con);
} else {
if (!output) {
output = get_focused_output();
}
geo = get_container_geometry(get_output_container(output));
// the geometry of the output in the get_tree response is relative to a global (0, 0).
// we need it to be relative to itself, so set origin to (0, 0) always.
geo->origin.x = 0;
geo->origin.y = 0;
}
const char *payload = create_payload(output, geo);
free(geo);
if (!file) {
if (!capture) {
file = default_filename("png");
} else {
file = default_filename("webm");
}
}
if (!capture) {
grab_and_apply_magick(file, payload, socketfd, raw);
} else {
grab_and_apply_movie_magic(file, payload, socketfd, raw, framerate);
}
free_json_tree();
free(output);
free(file);
close(socketfd);
return 0;
}

@ -1,76 +0,0 @@
/////
vim:set ts=4 sw=4 tw=82 noet:
/////
:quotes.~:
swaygrab (1)
============
Name
----
swaygrab - Grab image data from the current sway session.
Synopsis
--------
'swaygrab' [options] [file]
Grabs pixels from an output and writes them to _file_. The image will be passed to
ImageMagick convert for processing.
Options
-------
*-h, --help*::
Show help message and quit.
*-c, \--capture*::
Captures multiple frames as video and passes them into ffmpeg. Continues until
you send SIGTERM (ctrl+c) to swaygrab.
*-o, \--output* <output>::
Use the specified _output_. If no output is defined the currently focused
output in sway will be used.
*-v, \--version*::
Print the version (of swaymsg) and quit.
*-s, --socket* <path>::
Use the specified socket path. Otherwise, swaymsg will ask sway where the
socket is (which is the value of $SWAYSOCK, then of $I3SOCK).
*-R, --rate* <rate>::
Specify a framerate (in frames per second). Used in combination with -c.
Default is 30. Must be an integer.
*-r, --raw*::
Instead of invoking ImageMagick or ffmpeg, dump raw rgba data to stdout.
*-f, --focused*::
Capture only the currently focused container.
Environment Variables
---------------------
swaygrab reads the following environment variables.
*SWAYGRAB_FFMPEG_OPTS*::
Pass additional arguments to FFmpeg when starting a capture.
Examples
--------
swaygrab output.png::
Grab the contents of currently focused output and write to output.png.
swaygrab -c -o HDMI-A-1 output.webm::
Capture a webm of HDMI-A-1.
SWAYGRAB_FFMPEG_OPTS="-f alsa -i pulse" swaygrab -c::
Capture the focused output and encode audio from the default recording
device.
Authors
-------
Maintained by Drew DeVault <sir@cmpwn.com>, who is assisted by other open
source contributors. For more information about sway development, see
<https://github.com/swaywm/sway>.
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