diff options
Diffstat (limited to 'examples/screencopy-dmabuf.c')
| -rw-r--r-- | examples/screencopy-dmabuf.c | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/examples/screencopy-dmabuf.c b/examples/screencopy-dmabuf.c deleted file mode 100644 index f16c29da..00000000 --- a/examples/screencopy-dmabuf.c +++ /dev/null @@ -1,360 +0,0 @@ -/* - * Copyright © 2008 Kristian Høgsberg - * Copyright © 2020 Andri Yngvason - * - * 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 <gbm.h> -#include <xf86drm.h> -#include <drm_fourcc.h> -#include <wayland-client-protocol.h> -#include "wlr-screencopy-unstable-v1-client-protocol.h" -#include "linux-dmabuf-unstable-v1-client-protocol.h" - -struct format { - uint32_t format; - bool is_bgr; -}; - -static int drm_fd = -1; -static struct gbm_device *gbm_device = NULL; - -static struct zwp_linux_dmabuf_v1 *dmabuf = NULL; -static struct zwlr_screencopy_manager_v1 *screencopy_manager = NULL; -static struct wl_output *output = NULL; - -static struct { - struct gbm_bo *bo; - struct wl_buffer *wl_buffer; - int width, height; - uint32_t format; - bool y_invert; -} buffer; - -bool buffer_copy_done = false; -static bool have_linux_dmabuf = 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[] = { - {DRM_FORMAT_XRGB8888, true}, - {DRM_FORMAT_ARGB8888, true}, - {DRM_FORMAT_XBGR8888, false}, - {DRM_FORMAT_ABGR8888, false}, -}; - -static bool find_render_node(char *node, size_t node_size) { - bool r = false; - drmDevice *devices[64]; - - int n = drmGetDevices2(0, devices, sizeof(devices) / sizeof(devices[0])); - for (int i = 0; i < n; ++i) { - drmDevice *dev = devices[i]; - if (!(dev->available_nodes & (1 << DRM_NODE_RENDER))) { - continue; - } - - snprintf(node, node_size, "%s", dev->nodes[DRM_NODE_RENDER]); - r = true; - break; - } - - drmFreeDevices(devices, n); - return r; -} - -static void dmabuf_created(void *data, - struct zwp_linux_buffer_params_v1 *params, - struct wl_buffer *wl_buffer) { - buffer.wl_buffer = wl_buffer; - - zwlr_screencopy_frame_v1_copy(data, buffer.wl_buffer); -} - -static void dmabuf_failed(void *data, - struct zwp_linux_buffer_params_v1 *params) { - fprintf(stderr, "Failed to create dmabuf\n"); - exit(EXIT_FAILURE); -} - -static const struct zwp_linux_buffer_params_v1_listener params_listener = { - .created = dmabuf_created, - .failed = dmabuf_failed, -}; - -static void frame_handle_buffer(void *data, - struct zwlr_screencopy_frame_v1 *frame, uint32_t wl_format, - uint32_t width, uint32_t height, uint32_t stride) { - // Not implemented -} - -static void frame_handle_linux_dmabuf(void *data, - struct zwlr_screencopy_frame_v1 *frame, uint32_t fourcc, - uint32_t width, uint32_t height) { - buffer.width = width; - buffer.height = height; - buffer.format = fourcc; - have_linux_dmabuf = true; -} - -static void frame_handle_buffer_done(void *data, - struct zwlr_screencopy_frame_v1 *frame) { - assert(!buffer.bo); - - if (!have_linux_dmabuf) { - fprintf(stderr, "linux-dmabuf is not supported\n"); - exit(EXIT_FAILURE); - } - - buffer.bo = gbm_bo_create(gbm_device, buffer.width, buffer.height, - buffer.format, - GBM_BO_USE_LINEAR | GBM_BO_USE_RENDERING); - if (buffer.bo == NULL) { - fprintf(stderr, "failed to create GBM buffer object\n"); - exit(EXIT_FAILURE); - } - - struct zwp_linux_buffer_params_v1 *params; - params = zwp_linux_dmabuf_v1_create_params(dmabuf); - assert(params); - - int fd = gbm_bo_get_fd(buffer.bo); - uint32_t off = gbm_bo_get_offset(buffer.bo, 0); - uint32_t bo_stride = gbm_bo_get_stride(buffer.bo); - uint64_t mod = gbm_bo_get_modifier(buffer.bo); - zwp_linux_buffer_params_v1_add(params, fd, 0, off, bo_stride, mod >> 32, - mod & 0xffffffff); - - zwp_linux_buffer_params_v1_add_listener(params, ¶ms_listener, frame); - - zwp_linux_buffer_params_v1_create(params, buffer.width, buffer.height, - buffer.format, /* flags */ 0); -} - -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, - .linux_dmabuf = frame_handle_linux_dmabuf, - .buffer_done = frame_handle_buffer_done, - .flags = frame_handle_flags, - .ready = frame_handle_ready, - .failed = frame_handle_failed, -}; - -static void dmabuf_format(void *data, - struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf, uint32_t format) { - // deprecated -} - -static void dmabuf_modifier(void *data, - struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf, uint32_t format, - uint32_t modifier_hi, uint32_t modifier_lo) { - // TODO? -} - -static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = { - .format = dmabuf_format, - .modifier = dmabuf_modifier, -}; - -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, zwp_linux_dmabuf_v1_interface.name) == 0) { - dmabuf = wl_registry_bind(registry, name, - &zwp_linux_dmabuf_v1_interface, 3); - zwp_linux_dmabuf_v1_add_listener(dmabuf, &dmabuf_listener, data); - } else if (strcmp(interface, - zwlr_screencopy_manager_v1_interface.name) == 0) { - screencopy_manager = wl_registry_bind(registry, name, - &zwlr_screencopy_manager_v1_interface, 3); - } -} - -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, uint32_t format, 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].format == format) { - fmt = &formats[i]; - break; - } - } - - if (fmt == NULL) { - fprintf(stderr, "unsupported format %"PRIu32"\n", format); - 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[]) { - char render_node[256]; - if (!find_render_node(render_node, sizeof(render_node))) { - fprintf(stderr, "Failed to find a DRM render node\n"); - return EXIT_FAILURE; - } - - printf("Using render node: %s\n", render_node); - - drm_fd = open(render_node, O_RDWR); - if (drm_fd < 0) { - perror("Failed to open drm render node"); - return EXIT_FAILURE; - } - - gbm_device = gbm_create_device(drm_fd); - if (!gbm_device) { - fprintf(stderr, "Failed to create gbm device\n"); - return EXIT_FAILURE; - } - - 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, ®istry_listener, NULL); - wl_display_roundtrip(display); - - if (dmabuf == NULL) { - fprintf(stderr, "compositor is missing linux-dmabuf-unstable-v1\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 - } - - uint32_t stride = 0; - void *map_data = NULL; - void *data = gbm_bo_map(buffer.bo, 0, 0, buffer.width, buffer.height, - GBM_BO_TRANSFER_READ, &stride, &map_data); - if (!data) { - perror("Failed to map gbm bo"); - return EXIT_FAILURE; - } - - write_image("wayland-screenshot.png", buffer.format, buffer.width, - buffer.height, stride, buffer.y_invert, data); - - gbm_bo_unmap(buffer.bo, map_data); - gbm_bo_destroy(buffer.bo); - wl_buffer_destroy(buffer.wl_buffer); - - gbm_device_destroy(gbm_device); - close(drm_fd); - - return EXIT_SUCCESS; -} |