Drew DeVault
7 years ago
committed by
GitHub
commit
015ebc5750
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/*
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* Copyright © 2008 Kristian Høgsberg
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#define _XOPEN_SOURCE 700
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#define _POSIX_C_SOURCE 199309L
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <png.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/param.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <wayland-client-protocol.h>
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#include "wlr-screencopy-unstable-v1-client-protocol.h"
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struct format {
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enum wl_shm_format wl_format;
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bool is_bgr;
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};
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static struct wl_shm *shm = NULL;
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static struct zwlr_screencopy_manager_v1 *screencopy_manager = NULL;
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static struct wl_output *output = NULL;
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static struct {
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struct wl_buffer *wl_buffer;
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void *data;
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enum wl_shm_format format;
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int width, height, stride;
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bool y_invert;
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} buffer;
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bool buffer_copy_done = false;
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// wl_shm_format describes little-endian formats, libpng uses big-endian
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// formats (so Wayland's ABGR is libpng's RGBA).
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static const struct format formats[] = {
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{WL_SHM_FORMAT_XRGB8888, true},
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{WL_SHM_FORMAT_ARGB8888, true},
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{WL_SHM_FORMAT_XBGR8888, false},
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{WL_SHM_FORMAT_ABGR8888, false},
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};
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static int backingfile(off_t size) {
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char template[] = "/tmp/wlroots-shared-XXXXXX";
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int fd = mkstemp(template);
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if (fd < 0) {
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return -1;
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}
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int ret;
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while ((ret = ftruncate(fd, size)) == EINTR) {
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// No-op
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}
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if (ret < 0) {
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close(fd);
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return -1;
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}
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unlink(template);
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return fd;
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}
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static struct wl_buffer *create_shm_buffer(enum wl_shm_format fmt,
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int width, int height, int stride, void **data_out) {
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int size = stride * height;
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int fd = backingfile(size);
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if (fd < 0) {
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fprintf(stderr, "creating a buffer file for %d B failed: %m\n", size);
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return NULL;
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}
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void *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (data == MAP_FAILED) {
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fprintf(stderr, "mmap failed: %m\n");
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close(fd);
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return NULL;
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}
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struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, size);
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close(fd);
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struct wl_buffer *buffer = wl_shm_pool_create_buffer(pool, 0, width, height,
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stride, fmt);
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wl_shm_pool_destroy(pool);
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*data_out = data;
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return buffer;
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}
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static void frame_handle_buffer(void *data,
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struct zwlr_screencopy_frame_v1 *frame, uint32_t format,
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uint32_t width, uint32_t height, uint32_t stride) {
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buffer.format = format;
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buffer.width = width;
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buffer.height = height;
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buffer.stride = stride;
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buffer.wl_buffer =
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create_shm_buffer(format, width, height, stride, &buffer.data);
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if (buffer.wl_buffer == NULL) {
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fprintf(stderr, "failed to create buffer\n");
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exit(EXIT_FAILURE);
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}
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zwlr_screencopy_frame_v1_copy(frame, buffer.wl_buffer);
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}
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static void frame_handle_flags(void *data,
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struct zwlr_screencopy_frame_v1 *frame, uint32_t flags) {
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buffer.y_invert = flags & ZWLR_SCREENCOPY_FRAME_V1_FLAGS_Y_INVERT;
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}
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static void frame_handle_ready(void *data,
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struct zwlr_screencopy_frame_v1 *frame, uint32_t tv_sec_hi,
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uint32_t tv_sec_lo, uint32_t tv_nsec) {
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buffer_copy_done = true;
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}
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static void frame_handle_failed(void *data,
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struct zwlr_screencopy_frame_v1 *frame) {
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fprintf(stderr, "failed to copy frame\n");
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exit(EXIT_FAILURE);
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}
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static const struct zwlr_screencopy_frame_v1_listener frame_listener = {
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.buffer = frame_handle_buffer,
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.flags = frame_handle_flags,
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.ready = frame_handle_ready,
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.failed = frame_handle_failed,
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};
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static void handle_global(void *data, struct wl_registry *registry,
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uint32_t name, const char *interface, uint32_t version) {
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if (strcmp(interface, wl_output_interface.name) == 0 && output == NULL) {
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output = wl_registry_bind(registry, name, &wl_output_interface, 1);
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} else if (strcmp(interface, wl_shm_interface.name) == 0) {
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shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
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} else if (strcmp(interface,
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zwlr_screencopy_manager_v1_interface.name) == 0) {
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screencopy_manager = wl_registry_bind(registry, name,
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&zwlr_screencopy_manager_v1_interface, 1);
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}
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}
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static void handle_global_remove(void *data, struct wl_registry *registry,
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uint32_t name) {
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// Who cares?
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}
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static const struct wl_registry_listener registry_listener = {
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.global = handle_global,
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.global_remove = handle_global_remove,
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};
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static void write_image(char *filename, enum wl_shm_format wl_fmt, int width,
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int height, int stride, bool y_invert, png_bytep data) {
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const struct format *fmt = NULL;
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for (size_t i = 0; i < sizeof(formats) / sizeof(formats[0]); ++i) {
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if (formats[i].wl_format == wl_fmt) {
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fmt = &formats[i];
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break;
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}
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}
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if (fmt == NULL) {
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fprintf(stderr, "unsupported format %"PRIu32"\n", wl_fmt);
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exit(EXIT_FAILURE);
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}
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FILE *f = fopen(filename, "wb");
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if (f == NULL) {
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fprintf(stderr, "failed to open output file\n");
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exit(EXIT_FAILURE);
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}
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png_structp png =
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png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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png_infop info = png_create_info_struct(png);
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png_init_io(png, f);
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png_set_IHDR(png, info, width, height, 8, PNG_COLOR_TYPE_RGBA,
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PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
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PNG_FILTER_TYPE_DEFAULT);
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if (fmt->is_bgr) {
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png_set_bgr(png);
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}
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png_write_info(png, info);
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for (size_t i = 0; i < (size_t)height; ++i) {
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png_bytep row;
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if (y_invert) {
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row = data + (height - i - 1) * stride;
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} else {
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row = data + i * stride;
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}
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png_write_row(png, row);
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}
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png_write_end(png, NULL);
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png_destroy_write_struct(&png, &info);
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fclose(f);
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}
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int main(int argc, char *argv[]) {
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struct wl_display * display = wl_display_connect(NULL);
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if (display == NULL) {
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fprintf(stderr, "failed to create display: %m\n");
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return EXIT_FAILURE;
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}
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struct wl_registry *registry = wl_display_get_registry(display);
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wl_registry_add_listener(registry, ®istry_listener, NULL);
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wl_display_dispatch(display);
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wl_display_roundtrip(display);
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if (shm == NULL) {
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fprintf(stderr, "compositor is missing wl_shm\n");
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return EXIT_FAILURE;
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}
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if (screencopy_manager == NULL) {
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fprintf(stderr, "compositor doesn't support wlr-screencopy-unstable-v1\n");
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return EXIT_FAILURE;
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}
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if (output == NULL) {
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fprintf(stderr, "no output available\n");
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return EXIT_FAILURE;
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}
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struct zwlr_screencopy_frame_v1 *frame =
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zwlr_screencopy_manager_v1_capture_output(screencopy_manager, 0, output);
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zwlr_screencopy_frame_v1_add_listener(frame, &frame_listener, NULL);
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while (!buffer_copy_done && wl_display_dispatch(display) != -1) {
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// This space is intentionally left blank
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}
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write_image("wayland-screenshot.png", buffer.format, buffer.width,
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buffer.height, buffer.stride, buffer.y_invert, buffer.data);
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wl_buffer_destroy(buffer.wl_buffer);
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return EXIT_SUCCESS;
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}
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@ -0,0 +1,39 @@
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#ifndef WLR_TYPES_WLR_SCREENCOPY_V1_H
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#define WLR_TYPES_WLR_SCREENCOPY_V1_H
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#include <wayland-server.h>
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struct wlr_screencopy_manager_v1 {
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struct wl_global *global;
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struct wl_list resources; // wl_resource
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struct wl_list frames; // wlr_screencopy_frame_v1::link
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struct wl_listener display_destroy;
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void *data;
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};
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struct wlr_screencopy_frame_v1 {
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struct wl_resource *resource;
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struct wlr_screencopy_manager_v1 *manager;
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struct wl_list link;
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enum wl_shm_format format;
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struct wlr_box box;
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int stride;
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struct wl_shm_buffer *buffer;
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struct wl_listener buffer_destroy;
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struct wlr_output *output;
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struct wl_listener output_swap_buffers;
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void *data;
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};
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struct wlr_screencopy_manager_v1 *wlr_screencopy_manager_v1_create(
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struct wl_display *display);
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void wlr_screencopy_manager_v1_destroy(
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struct wlr_screencopy_manager_v1 *screencopy);
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#endif
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@ -0,0 +1,179 @@
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|
<?xml version="1.0" encoding="UTF-8"?>
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|
<protocol name="wlr_screencopy_unstable_v1">
|
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|
<copyright>
|
||||||
|
Copyright © 2018 Simon Ser
|
||||||
|
|
||||||
|
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.
|
||||||
|
</copyright>
|
||||||
|
|
||||||
|
<description summary="screen content capturing on client buffers">
|
||||||
|
This protocol allows clients to ask the compositor to copy part of the
|
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|
screen content to a client buffer.
|
||||||
|
|
||||||
|
Warning! The protocol described in this file is experimental and
|
||||||
|
backward incompatible changes may be made. Backward compatible changes
|
||||||
|
may be added together with the corresponding interface version bump.
|
||||||
|
Backward incompatible changes are done by bumping the version number in
|
||||||
|
the protocol and interface names and resetting the interface version.
|
||||||
|
Once the protocol is to be declared stable, the 'z' prefix and the
|
||||||
|
version number in the protocol and interface names are removed and the
|
||||||
|
interface version number is reset.
|
||||||
|
</description>
|
||||||
|
|
||||||
|
<interface name="zwlr_screencopy_manager_v1" version="1">
|
||||||
|
<description summary="manager to inform clients and begin capturing">
|
||||||
|
This object is a manager which offers requests to start capturing from a
|
||||||
|
source.
|
||||||
|
</description>
|
||||||
|
|
||||||
|
<request name="capture_output">
|
||||||
|
<description summary="capture an output">
|
||||||
|
Capture the next frame of an entire output.
|
||||||
|
</description>
|
||||||
|
<arg name="frame" type="new_id" interface="zwlr_screencopy_frame_v1"/>
|
||||||
|
<arg name="overlay_cursor" type="int"
|
||||||
|
summary="composite cursor onto the frame"/>
|
||||||
|
<arg name="output" type="object" interface="wl_output"/>
|
||||||
|
</request>
|
||||||
|
|
||||||
|
<request name="capture_output_region">
|
||||||
|
<description summary="capture an output's region">
|
||||||
|
Capture the next frame of an output's region.
|
||||||
|
|
||||||
|
The region is given in output logical coordinates, see
|
||||||
|
xdg_output.logical_size. The region will be clipped to the output's
|
||||||
|
extents.
|
||||||
|
</description>
|
||||||
|
<arg name="frame" type="new_id" interface="zwlr_screencopy_frame_v1"/>
|
||||||
|
<arg name="overlay_cursor" type="int"
|
||||||
|
summary="composite cursor onto the frame"/>
|
||||||
|
<arg name="output" type="object" interface="wl_output"/>
|
||||||
|
<arg name="x" type="int"/>
|
||||||
|
<arg name="y" type="int"/>
|
||||||
|
<arg name="width" type="int"/>
|
||||||
|
<arg name="height" type="int"/>
|
||||||
|
</request>
|
||||||
|
|
||||||
|
<request name="destroy" type="destructor">
|
||||||
|
<description summary="destroy the manager">
|
||||||
|
All objects created by the manager will still remain valid, until their
|
||||||
|
appropriate destroy request has been called.
|
||||||
|
</description>
|
||||||
|
</request>
|
||||||
|
</interface>
|
||||||
|
|
||||||
|
<interface name="zwlr_screencopy_frame_v1" version="1">
|
||||||
|
<description summary="a frame ready for copy">
|
||||||
|
This object represents a single frame.
|
||||||
|
|
||||||
|
When created, a "buffer" event will be sent. The client will then be able
|
||||||
|
to send a "copy" request. If the capture is successful, the compositor
|
||||||
|
will send a "flags" followed by a "ready" event.
|
||||||
|
|
||||||
|
If the capture failed, the "failed" event is sent. This can happen anytime
|
||||||
|
before the "ready" event.
|
||||||
|
|
||||||
|
Once either a "ready" or a "failed" event is received, the client should
|
||||||
|
destroy the frame.
|
||||||
|
</description>
|
||||||
|
|
||||||
|
<event name="buffer">
|
||||||
|
<description summary="buffer information">
|
||||||
|
Provides information about the frame's buffer. This event is sent once
|
||||||
|
as soon as the frame is created.
|
||||||
|
|
||||||
|
The client should then create a buffer with the provided attributes, and
|
||||||
|
send a "copy" request.
|
||||||
|
</description>
|
||||||
|
<arg name="format" type="uint" summary="buffer format"/>
|
||||||
|
<arg name="width" type="uint" summary="buffer width"/>
|
||||||
|
<arg name="height" type="uint" summary="buffer height"/>
|
||||||
|
<arg name="stride" type="uint" summary="buffer stride"/>
|
||||||
|
</event>
|
||||||
|
|
||||||
|
<request name="copy">
|
||||||
|
<description summary="copy the frame">
|
||||||
|
Copy the frame to the supplied buffer. The buffer must have a the
|
||||||
|
correct size, see zwlr_screencopy_frame_v1.buffer. The buffer needs to
|
||||||
|
have a supported format.
|
||||||
|
|
||||||
|
If the frame is successfully copied, a "flags" and a "ready" events are
|
||||||
|
sent. Otherwise, a "failed" event is sent.
|
||||||
|
</description>
|
||||||
|
<arg name="buffer" type="object" interface="wl_buffer"/>
|
||||||
|
</request>
|
||||||
|
|
||||||
|
<enum name="error">
|
||||||
|
<entry name="already_used" value="0"
|
||||||
|
summary="the object has already been used to copy a wl_buffer"/>
|
||||||
|
<entry name="invalid_buffer" value="1"
|
||||||
|
summary="buffer attributes are invalid"/>
|
||||||
|
</enum>
|
||||||
|
|
||||||
|
<enum name="flags" bitfield="true">
|
||||||
|
<entry name="y_invert" value="1" summary="contents are y-inverted"/>
|
||||||
|
</enum>
|
||||||
|
|
||||||
|
<event name="flags">
|
||||||
|
<description summary="frame flags">
|
||||||
|
Provides flags about the frame. This event is sent once before the
|
||||||
|
"ready" event.
|
||||||
|
</description>
|
||||||
|
<arg name="flags" type="uint" enum="flags" summary="frame flags"/>
|
||||||
|
</event>
|
||||||
|
|
||||||
|
<event name="ready">
|
||||||
|
<description summary="indicates frame is available for reading">
|
||||||
|
Called as soon as the frame is copied, indicating it is available
|
||||||
|
for reading. This event includes the time at which presentation happened
|
||||||
|
at.
|
||||||
|
|
||||||
|
The timestamp is expressed as tv_sec_hi, tv_sec_lo, tv_nsec triples,
|
||||||
|
each component being an unsigned 32-bit value. Whole seconds are in
|
||||||
|
tv_sec which is a 64-bit value combined from tv_sec_hi and tv_sec_lo,
|
||||||
|
and the additional fractional part in tv_nsec as nanoseconds. Hence,
|
||||||
|
for valid timestamps tv_nsec must be in [0, 999999999]. The seconds part
|
||||||
|
may have an arbitrary offset at start.
|
||||||
|
|
||||||
|
After receiving this event, the client should destroy the object.
|
||||||
|
</description>
|
||||||
|
<arg name="tv_sec_hi" type="uint"
|
||||||
|
summary="high 32 bits of the seconds part of the timestamp"/>
|
||||||
|
<arg name="tv_sec_lo" type="uint"
|
||||||
|
summary="low 32 bits of the seconds part of the timestamp"/>
|
||||||
|
<arg name="tv_nsec" type="uint"
|
||||||
|
summary="nanoseconds part of the timestamp"/>
|
||||||
|
</event>
|
||||||
|
|
||||||
|
<event name="failed">
|
||||||
|
<description summary="frame copy failed">
|
||||||
|
This event indicates that the attempted frame copy has failed.
|
||||||
|
|
||||||
|
After receiving this event, the client should destroy the object.
|
||||||
|
</description>
|
||||||
|
</event>
|
||||||
|
|
||||||
|
<request name="destroy" type="destructor">
|
||||||
|
<description summary="delete this object, used or not">
|
||||||
|
Destroys the frame. This request can be sent at any time by the client.
|
||||||
|
</description>
|
||||||
|
</request>
|
||||||
|
</interface>
|
||||||
|
</protocol>
|
||||||
@ -0,0 +1,318 @@
|
|||||||
|
#include <assert.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <wlr/render/wlr_renderer.h>
|
||||||
|
#include <wlr/types/wlr_output.h>
|
||||||
|
#include <wlr/types/wlr_screencopy_v1.h>
|
||||||
|
#include <wlr/backend.h>
|
||||||
|
#include "wlr-screencopy-unstable-v1-protocol.h"
|
||||||
|
|
||||||
|
#define SCREENCOPY_MANAGER_VERSION 1
|
||||||
|
|
||||||
|
static const struct zwlr_screencopy_frame_v1_interface frame_impl;
|
||||||
|
|
||||||
|
static struct wlr_screencopy_frame_v1 *frame_from_resource(
|
||||||
|
struct wl_resource *resource) {
|
||||||
|
assert(wl_resource_instance_of(resource,
|
||||||
|
&zwlr_screencopy_frame_v1_interface, &frame_impl));
|
||||||
|
return wl_resource_get_user_data(resource);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void frame_destroy(struct wlr_screencopy_frame_v1 *frame) {
|
||||||
|
if (frame == NULL) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
wl_list_remove(&frame->link);
|
||||||
|
wl_list_remove(&frame->output_swap_buffers.link);
|
||||||
|
wl_list_remove(&frame->buffer_destroy.link);
|
||||||
|
// Make the frame resource inert
|
||||||
|
wl_resource_set_user_data(frame->resource, NULL);
|
||||||
|
free(frame);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void frame_handle_output_swap_buffers(struct wl_listener *listener,
|
||||||
|
void *_data) {
|
||||||
|
struct wlr_screencopy_frame_v1 *frame =
|
||||||
|
wl_container_of(listener, frame, output_swap_buffers);
|
||||||
|
struct wlr_output_event_swap_buffers *event = _data;
|
||||||
|
struct wlr_output *output = frame->output;
|
||||||
|
struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend);
|
||||||
|
|
||||||
|
wl_list_remove(&frame->output_swap_buffers.link);
|
||||||
|
wl_list_init(&frame->output_swap_buffers.link);
|
||||||
|
|
||||||
|
int x = frame->box.x;
|
||||||
|
int y = frame->box.y;
|
||||||
|
|
||||||
|
struct wl_shm_buffer *buffer = frame->buffer;
|
||||||
|
assert(buffer != NULL);
|
||||||
|
|
||||||
|
enum wl_shm_format fmt = wl_shm_buffer_get_format(buffer);
|
||||||
|
int32_t width = wl_shm_buffer_get_width(buffer);
|
||||||
|
int32_t height = wl_shm_buffer_get_height(buffer);
|
||||||
|
int32_t stride = wl_shm_buffer_get_stride(buffer);
|
||||||
|
|
||||||
|
wl_shm_buffer_begin_access(buffer);
|
||||||
|
void *data = wl_shm_buffer_get_data(buffer);
|
||||||
|
uint32_t flags = 0;
|
||||||
|
bool ok = wlr_renderer_read_pixels(renderer, fmt, &flags, stride,
|
||||||
|
width, height, x, y, 0, 0, data);
|
||||||
|
wl_shm_buffer_end_access(buffer);
|
||||||
|
|
||||||
|
if (!ok) {
|
||||||
|
zwlr_screencopy_frame_v1_send_failed(frame->resource);
|
||||||
|
frame_destroy(frame);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
zwlr_screencopy_frame_v1_send_flags(frame->resource, flags);
|
||||||
|
|
||||||
|
uint32_t tv_sec_hi = event->when->tv_sec >> 32;
|
||||||
|
uint32_t tv_sec_lo = event->when->tv_sec & 0xFFFFFFFF;
|
||||||
|
zwlr_screencopy_frame_v1_send_ready(frame->resource,
|
||||||
|
tv_sec_hi, tv_sec_lo, event->when->tv_nsec);
|
||||||
|
|
||||||
|
frame_destroy(frame);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void frame_handle_buffer_destroy(struct wl_listener *listener,
|
||||||
|
void *data) {
|
||||||
|
struct wlr_screencopy_frame_v1 *frame =
|
||||||
|
wl_container_of(listener, frame, buffer_destroy);
|
||||||
|
zwlr_screencopy_frame_v1_send_failed(frame->resource);
|
||||||
|
frame_destroy(frame);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void frame_handle_copy(struct wl_client *client,
|
||||||
|
struct wl_resource *frame_resource,
|
||||||
|
struct wl_resource *buffer_resource) {
|
||||||
|
struct wlr_screencopy_frame_v1 *frame = frame_from_resource(frame_resource);
|
||||||
|
if (frame == NULL) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct wlr_output *output = frame->output;
|
||||||
|
|
||||||
|
struct wl_shm_buffer *buffer = wl_shm_buffer_get(buffer_resource);
|
||||||
|
if (buffer == NULL) {
|
||||||
|
wl_resource_post_error(frame->resource,
|
||||||
|
ZWLR_SCREENCOPY_FRAME_V1_ERROR_INVALID_BUFFER,
|
||||||
|
"unsupported buffer type");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
enum wl_shm_format fmt = wl_shm_buffer_get_format(buffer);
|
||||||
|
int32_t width = wl_shm_buffer_get_width(buffer);
|
||||||
|
int32_t height = wl_shm_buffer_get_height(buffer);
|
||||||
|
int32_t stride = wl_shm_buffer_get_stride(buffer);
|
||||||
|
if (fmt != frame->format || width != frame->box.width ||
|
||||||
|
height != frame->box.height || stride != frame->stride) {
|
||||||
|
wl_resource_post_error(frame->resource,
|
||||||
|
ZWLR_SCREENCOPY_FRAME_V1_ERROR_INVALID_BUFFER,
|
||||||
|
"invalid buffer attributes");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!wl_list_empty(&frame->output_swap_buffers.link) ||
|
||||||
|
frame->buffer != NULL) {
|
||||||
|
wl_resource_post_error(frame->resource,
|
||||||
|
ZWLR_SCREENCOPY_FRAME_V1_ERROR_ALREADY_USED,
|
||||||
|
"frame already used");
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
frame->buffer = buffer;
|
||||||
|
|
||||||
|
wl_signal_add(&output->events.swap_buffers, &frame->output_swap_buffers);
|
||||||
|
frame->output_swap_buffers.notify = frame_handle_output_swap_buffers;
|
||||||
|
|
||||||
|
wl_resource_add_destroy_listener(buffer_resource, &frame->buffer_destroy);
|
||||||
|
frame->buffer_destroy.notify = frame_handle_buffer_destroy;
|
||||||
|
|
||||||
|
// Schedule a buffer swap
|
||||||
|
output->needs_swap = true;
|
||||||
|
wlr_output_schedule_frame(output);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void frame_handle_destroy(struct wl_client *client,
|
||||||
|
struct wl_resource *frame_resource) {
|
||||||
|
wl_resource_destroy(frame_resource);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct zwlr_screencopy_frame_v1_interface frame_impl = {
|
||||||
|
.copy = frame_handle_copy,
|
||||||
|
.destroy = frame_handle_destroy,
|
||||||
|
};
|
||||||
|
|
||||||
|
static void frame_handle_resource_destroy(struct wl_resource *frame_resource) {
|
||||||
|
struct wlr_screencopy_frame_v1 *frame = frame_from_resource(frame_resource);
|
||||||
|
frame_destroy(frame);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static const struct zwlr_screencopy_manager_v1_interface manager_impl;
|
||||||
|
|
||||||
|
static struct wlr_screencopy_manager_v1 *manager_from_resource(
|
||||||
|
struct wl_resource *resource) {
|
||||||
|
assert(wl_resource_instance_of(resource,
|
||||||
|
&zwlr_screencopy_manager_v1_interface, &manager_impl));
|
||||||
|
return wl_resource_get_user_data(resource);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void capture_output(struct wl_client *client,
|
||||||
|
struct wlr_screencopy_manager_v1 *manager, uint32_t version, uint32_t id,
|
||||||
|
int32_t overlay_cursor, struct wlr_output *output,
|
||||||
|
const struct wlr_box *box) {
|
||||||
|
struct wlr_box buffer_box = {0};
|
||||||
|
if (box == NULL) {
|
||||||
|
buffer_box.width = output->width;
|
||||||
|
buffer_box.height = output->height;
|
||||||
|
} else {
|
||||||
|
int ow, oh;
|
||||||
|
wlr_output_effective_resolution(output, &ow, &oh);
|
||||||
|
|
||||||
|
buffer_box = *box;
|
||||||
|
|
||||||
|
wlr_box_transform(&buffer_box, output->transform, ow, oh, &buffer_box);
|
||||||
|
buffer_box.x *= output->scale;
|
||||||
|
buffer_box.y *= output->scale;
|
||||||
|
buffer_box.width *= output->scale;
|
||||||
|
buffer_box.height *= output->scale;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct wlr_screencopy_frame_v1 *frame =
|
||||||
|
calloc(1, sizeof(struct wlr_screencopy_frame_v1));
|
||||||
|
if (frame == NULL) {
|
||||||
|
wl_client_post_no_memory(client);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
frame->manager = manager;
|
||||||
|
frame->output = output;
|
||||||
|
|
||||||
|
frame->resource = wl_resource_create(client,
|
||||||
|
&zwlr_screencopy_frame_v1_interface, version, id);
|
||||||
|
if (frame->resource == NULL) {
|
||||||
|
free(frame);
|
||||||
|
wl_client_post_no_memory(client);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
wl_resource_set_implementation(frame->resource, &frame_impl, frame,
|
||||||
|
frame_handle_resource_destroy);
|
||||||
|
|
||||||
|
wl_list_insert(&manager->frames, &frame->link);
|
||||||
|
|
||||||
|
wl_list_init(&frame->output_swap_buffers.link);
|
||||||
|
|
||||||
|
frame->format = WL_SHM_FORMAT_XRGB8888;
|
||||||
|
frame->box = buffer_box;
|
||||||
|
frame->stride = 4 * buffer_box.width;
|
||||||
|
zwlr_screencopy_frame_v1_send_buffer(frame->resource, frame->format,
|
||||||
|
buffer_box.width, buffer_box.height, frame->stride);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void manager_handle_capture_output(struct wl_client *client,
|
||||||
|
struct wl_resource *manager_resource, uint32_t id,
|
||||||
|
int32_t overlay_cursor, struct wl_resource *output_resource) {
|
||||||
|
struct wlr_screencopy_manager_v1 *manager =
|
||||||
|
manager_from_resource(manager_resource);
|
||||||
|
uint32_t version = wl_resource_get_version(manager_resource);
|
||||||
|
struct wlr_output *output = wlr_output_from_resource(output_resource);
|
||||||
|
|
||||||
|
capture_output(client, manager, version, id, overlay_cursor, output, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void manager_handle_capture_output_region(struct wl_client *client,
|
||||||
|
struct wl_resource *manager_resource, uint32_t id,
|
||||||
|
int32_t overlay_cursor, struct wl_resource *output_resource,
|
||||||
|
int32_t x, int32_t y, int32_t width, int32_t height) {
|
||||||
|
struct wlr_screencopy_manager_v1 *manager =
|
||||||
|
manager_from_resource(manager_resource);
|
||||||
|
uint32_t version = wl_resource_get_version(manager_resource);
|
||||||
|
struct wlr_output *output = wlr_output_from_resource(output_resource);
|
||||||
|
|
||||||
|
struct wlr_box box = {
|
||||||
|
.x = x,
|
||||||
|
.y = y,
|
||||||
|
.width = width,
|
||||||
|
.height = height,
|
||||||
|
};
|
||||||
|
capture_output(client, manager, version, id, overlay_cursor, output, &box);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void manager_handle_destroy(struct wl_client *client,
|
||||||
|
struct wl_resource *manager_resource) {
|
||||||
|
wl_resource_destroy(manager_resource);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct zwlr_screencopy_manager_v1_interface manager_impl = {
|
||||||
|
.capture_output = manager_handle_capture_output,
|
||||||
|
.capture_output_region = manager_handle_capture_output_region,
|
||||||
|
.destroy = manager_handle_destroy,
|
||||||
|
};
|
||||||
|
|
||||||
|
void manager_handle_resource_destroy(struct wl_resource *resource) {
|
||||||
|
wl_list_remove(wl_resource_get_link(resource));
|
||||||
|
}
|
||||||
|
|
||||||
|
static void manager_bind(struct wl_client *client, void *data, uint32_t version,
|
||||||
|
uint32_t id) {
|
||||||
|
struct wlr_screencopy_manager_v1 *manager = data;
|
||||||
|
|
||||||
|
struct wl_resource *resource = wl_resource_create(client,
|
||||||
|
&zwlr_screencopy_manager_v1_interface, version, id);
|
||||||
|
if (resource == NULL) {
|
||||||
|
wl_client_post_no_memory(client);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
wl_resource_set_implementation(resource, &manager_impl, manager,
|
||||||
|
manager_handle_resource_destroy);
|
||||||
|
|
||||||
|
wl_list_insert(&manager->resources, wl_resource_get_link(resource));
|
||||||
|
}
|
||||||
|
|
||||||
|
static void handle_display_destroy(struct wl_listener *listener, void *data) {
|
||||||
|
struct wlr_screencopy_manager_v1 *manager =
|
||||||
|
wl_container_of(listener, manager, display_destroy);
|
||||||
|
wlr_screencopy_manager_v1_destroy(manager);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct wlr_screencopy_manager_v1 *wlr_screencopy_manager_v1_create(
|
||||||
|
struct wl_display *display) {
|
||||||
|
struct wlr_screencopy_manager_v1 *manager =
|
||||||
|
calloc(1, sizeof(struct wlr_screencopy_manager_v1));
|
||||||
|
if (manager == NULL) {
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
manager->global = wl_global_create(display,
|
||||||
|
&zwlr_screencopy_manager_v1_interface, SCREENCOPY_MANAGER_VERSION,
|
||||||
|
manager, manager_bind);
|
||||||
|
if (manager->global == NULL) {
|
||||||
|
free(manager);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
wl_list_init(&manager->resources);
|
||||||
|
wl_list_init(&manager->frames);
|
||||||
|
|
||||||
|
manager->display_destroy.notify = handle_display_destroy;
|
||||||
|
wl_display_add_destroy_listener(display, &manager->display_destroy);
|
||||||
|
|
||||||
|
return manager;
|
||||||
|
}
|
||||||
|
|
||||||
|
void wlr_screencopy_manager_v1_destroy(
|
||||||
|
struct wlr_screencopy_manager_v1 *manager) {
|
||||||
|
if (manager == NULL) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
wl_list_remove(&manager->display_destroy.link);
|
||||||
|
struct wlr_screencopy_frame_v1 *frame, *tmp_frame;
|
||||||
|
wl_list_for_each_safe(frame, tmp_frame, &manager->frames, link) {
|
||||||
|
wl_resource_destroy(frame->resource);
|
||||||
|
}
|
||||||
|
struct wl_resource *resource, *tmp_resource;
|
||||||
|
wl_resource_for_each_safe(resource, tmp_resource, &manager->resources) {
|
||||||
|
wl_resource_destroy(resource);
|
||||||
|
}
|
||||||
|
wl_global_destroy(manager->global);
|
||||||
|
free(manager);
|
||||||
|
}
|
||||||
Loading…
Reference in new issue