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-rw-r--r--examples/screencopy.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/examples/screencopy.c b/examples/screencopy.c
deleted file mode 100644
index 42123e55..00000000
--- a/examples/screencopy.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- * Copyright © 2008 Kristian Høgsberg
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#define _POSIX_C_SOURCE 200112L
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <png.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <assert.h>
-#include <wayland-client-protocol.h>
-#include "wlr-screencopy-unstable-v1-client-protocol.h"
-
-struct format {
- enum wl_shm_format wl_format;
- bool is_bgr;
-};
-
-static struct wl_shm *shm = NULL;
-static struct zwlr_screencopy_manager_v1 *screencopy_manager = NULL;
-static struct wl_output *output = NULL;
-
-static struct {
- struct wl_buffer *wl_buffer;
- void *data;
- enum wl_shm_format format;
- int width, height, stride;
- bool y_invert;
-} buffer;
-bool buffer_copy_done = false;
-
-// wl_shm_format describes little-endian formats, libpng uses big-endian
-// formats (so Wayland's ABGR is libpng's RGBA).
-static const struct format formats[] = {
- {WL_SHM_FORMAT_XRGB8888, true},
- {WL_SHM_FORMAT_ARGB8888, true},
- {WL_SHM_FORMAT_XBGR8888, false},
- {WL_SHM_FORMAT_ABGR8888, false},
-};
-
-static struct wl_buffer *create_shm_buffer(enum wl_shm_format fmt,
- int width, int height, int stride, void **data_out) {
- int size = stride * height;
-
- const char shm_name[] = "/wlroots-screencopy";
- int fd = shm_open(shm_name, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
- if (fd < 0) {
- fprintf(stderr, "shm_open failed\n");
- return NULL;
- }
- shm_unlink(shm_name);
-
- int ret;
- while ((ret = ftruncate(fd, size)) == EINTR) {
- // No-op
- }
- if (ret < 0) {
- close(fd);
- fprintf(stderr, "ftruncate failed\n");
- return NULL;
- }
-
- void *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
- if (data == MAP_FAILED) {
- perror("mmap failed");
- close(fd);
- return NULL;
- }
-
- struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, size);
- close(fd);
- struct wl_buffer *buffer = wl_shm_pool_create_buffer(pool, 0, width, height,
- stride, fmt);
- wl_shm_pool_destroy(pool);
-
- *data_out = data;
- return buffer;
-}
-
-static void frame_handle_buffer(void *data,
- struct zwlr_screencopy_frame_v1 *frame, uint32_t format,
- uint32_t width, uint32_t height, uint32_t stride) {
- buffer.format = format;
- buffer.width = width;
- buffer.height = height;
- buffer.stride = stride;
-
- // Make sure the buffer is not allocated
- assert(!buffer.wl_buffer);
- buffer.wl_buffer =
- create_shm_buffer(format, width, height, stride, &buffer.data);
- if (buffer.wl_buffer == NULL) {
- fprintf(stderr, "failed to create buffer\n");
- exit(EXIT_FAILURE);
- }
-
- zwlr_screencopy_frame_v1_copy(frame, buffer.wl_buffer);
-}
-
-static void frame_handle_flags(void *data,
- struct zwlr_screencopy_frame_v1 *frame, uint32_t flags) {
- buffer.y_invert = flags & ZWLR_SCREENCOPY_FRAME_V1_FLAGS_Y_INVERT;
-}
-
-static void frame_handle_ready(void *data,
- struct zwlr_screencopy_frame_v1 *frame, uint32_t tv_sec_hi,
- uint32_t tv_sec_lo, uint32_t tv_nsec) {
- buffer_copy_done = true;
-}
-
-static void frame_handle_failed(void *data,
- struct zwlr_screencopy_frame_v1 *frame) {
- fprintf(stderr, "failed to copy frame\n");
- exit(EXIT_FAILURE);
-}
-
-static const struct zwlr_screencopy_frame_v1_listener frame_listener = {
- .buffer = frame_handle_buffer,
- .flags = frame_handle_flags,
- .ready = frame_handle_ready,
- .failed = frame_handle_failed,
-};
-
-static void handle_global(void *data, struct wl_registry *registry,
- uint32_t name, const char *interface, uint32_t version) {
- if (strcmp(interface, wl_output_interface.name) == 0 && output == NULL) {
- output = wl_registry_bind(registry, name, &wl_output_interface, 1);
- } else if (strcmp(interface, wl_shm_interface.name) == 0) {
- shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
- } else if (strcmp(interface,
- zwlr_screencopy_manager_v1_interface.name) == 0) {
- screencopy_manager = wl_registry_bind(registry, name,
- &zwlr_screencopy_manager_v1_interface, 1);
- }
-}
-
-static void handle_global_remove(void *data, struct wl_registry *registry,
- uint32_t name) {
- // Who cares?
-}
-
-static const struct wl_registry_listener registry_listener = {
- .global = handle_global,
- .global_remove = handle_global_remove,
-};
-
-static void write_image(char *filename, enum wl_shm_format wl_fmt, int width,
- int height, int stride, bool y_invert, png_bytep data) {
- const struct format *fmt = NULL;
- for (size_t i = 0; i < sizeof(formats) / sizeof(formats[0]); ++i) {
- if (formats[i].wl_format == wl_fmt) {
- fmt = &formats[i];
- break;
- }
- }
- if (fmt == NULL) {
- fprintf(stderr, "unsupported format %"PRIu32"\n", wl_fmt);
- exit(EXIT_FAILURE);
- }
-
- FILE *f = fopen(filename, "wb");
- if (f == NULL) {
- fprintf(stderr, "failed to open output file\n");
- exit(EXIT_FAILURE);
- }
-
- png_structp png =
- png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
- png_infop info = png_create_info_struct(png);
-
- png_init_io(png, f);
-
- png_set_IHDR(png, info, width, height, 8, PNG_COLOR_TYPE_RGBA,
- PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
- PNG_FILTER_TYPE_DEFAULT);
-
- if (fmt->is_bgr) {
- png_set_bgr(png);
- }
-
- png_write_info(png, info);
-
- for (size_t i = 0; i < (size_t)height; ++i) {
- png_bytep row;
- if (y_invert) {
- row = data + (height - i - 1) * stride;
- } else {
- row = data + i * stride;
- }
- png_write_row(png, row);
- }
-
- png_write_end(png, NULL);
-
- png_destroy_write_struct(&png, &info);
-
- fclose(f);
-}
-
-int main(int argc, char *argv[]) {
- struct wl_display * display = wl_display_connect(NULL);
- if (display == NULL) {
- perror("failed to create display");
- return EXIT_FAILURE;
- }
-
- struct wl_registry *registry = wl_display_get_registry(display);
- wl_registry_add_listener(registry, &registry_listener, NULL);
- wl_display_roundtrip(display);
-
- if (shm == NULL) {
- fprintf(stderr, "compositor is missing wl_shm\n");
- return EXIT_FAILURE;
- }
- if (screencopy_manager == NULL) {
- fprintf(stderr, "compositor doesn't support wlr-screencopy-unstable-v1\n");
- return EXIT_FAILURE;
- }
- if (output == NULL) {
- fprintf(stderr, "no output available\n");
- return EXIT_FAILURE;
- }
-
- struct zwlr_screencopy_frame_v1 *frame =
- zwlr_screencopy_manager_v1_capture_output(screencopy_manager, 0, output);
- zwlr_screencopy_frame_v1_add_listener(frame, &frame_listener, NULL);
-
- while (!buffer_copy_done && wl_display_dispatch(display) != -1) {
- // This space is intentionally left blank
- }
-
- write_image("wayland-screenshot.png", buffer.format, buffer.width,
- buffer.height, buffer.stride, buffer.y_invert, buffer.data);
- wl_buffer_destroy(buffer.wl_buffer);
- munmap(buffer.data, buffer.stride * buffer.height);
-
- return EXIT_SUCCESS;
-}