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-rw-r--r--backend/drm/drm.c2
-rw-r--r--examples/meson.build10
-rw-r--r--examples/screencopy.c270
-rw-r--r--include/rootston/desktop.h2
-rw-r--r--include/wlr/render/interface.h2
-rw-r--r--include/wlr/render/wlr_renderer.h9
-rw-r--r--include/wlr/types/wlr_screencopy_v1.h39
-rw-r--r--protocol/meson.build4
-rw-r--r--protocol/wlr-screencopy-unstable-v1.xml179
-rw-r--r--render/gles2/renderer.c35
-rw-r--r--render/wlr_renderer.c6
-rw-r--r--rootston/desktop.c3
-rw-r--r--types/meson.build1
-rw-r--r--types/wlr_screencopy_v1.c318
-rw-r--r--types/wlr_screenshooter.c4
15 files changed, 865 insertions, 19 deletions
diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index f4a971a2..ae462568 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -683,7 +683,7 @@ static bool drm_connector_set_cursor(struct wlr_output *output,
wlr_render_texture_with_matrix(rend, texture, matrix, 1.0);
wlr_renderer_end(rend);
- wlr_renderer_read_pixels(rend, WL_SHM_FORMAT_ARGB8888, bo_stride,
+ wlr_renderer_read_pixels(rend, WL_SHM_FORMAT_ARGB8888, NULL, bo_stride,
plane->surf.width, plane->surf.height, 0, 0, 0, 0, bo_data);
swap_drm_surface_buffers(&plane->surf, NULL);
diff --git a/examples/meson.build b/examples/meson.build
index d8df0bfc..18f44fde 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -1,6 +1,8 @@
threads = dependency('threads')
wayland_cursor = dependency('wayland-cursor')
+libpng = dependency('libpng', required: false)
+
# These versions correspond to ffmpeg 4.0
libavutil = dependency('libavutil', version: '>=56.14.100', required: false)
libavcodec = dependency('libavcodec', version: '>=58.18.100', required: false)
@@ -56,3 +58,11 @@ if libavutil.found() and libavcodec.found() and libavformat.found()
libavformat, wlroots, threads ]
)
endif
+
+if libpng.found()
+ executable(
+ 'screencopy',
+ 'screencopy.c',
+ dependencies: [wayland_client, wlr_protos, wlroots, libpng]
+ )
+endif
diff --git a/examples/screencopy.c b/examples/screencopy.c
new file mode 100644
index 00000000..4e58cd3b
--- /dev/null
+++ b/examples/screencopy.c
@@ -0,0 +1,270 @@
+/*
+ * 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 _XOPEN_SOURCE 700
+#define _POSIX_C_SOURCE 199309L
+#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/wait.h>
+#include <unistd.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 int backingfile(off_t size) {
+ char template[] = "/tmp/wlroots-shared-XXXXXX";
+ int fd = mkstemp(template);
+ if (fd < 0) {
+ return -1;
+ }
+
+ int ret;
+ while ((ret = ftruncate(fd, size)) == EINTR) {
+ // No-op
+ }
+ if (ret < 0) {
+ close(fd);
+ return -1;
+ }
+
+ unlink(template);
+ return fd;
+}
+
+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;
+
+ int fd = backingfile(size);
+ if (fd < 0) {
+ fprintf(stderr, "creating a buffer file for %d B failed: %m\n", size);
+ return NULL;
+ }
+
+ void *data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (data == MAP_FAILED) {
+ fprintf(stderr, "mmap failed: %m\n");
+ 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;
+ 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) {
+ fprintf(stderr, "failed to create display: %m\n");
+ return EXIT_FAILURE;
+ }
+
+ struct wl_registry *registry = wl_display_get_registry(display);
+ wl_registry_add_listener(registry, &registry_listener, NULL);
+ wl_display_dispatch(display);
+ 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);
+
+ return EXIT_SUCCESS;
+}
diff --git a/include/rootston/desktop.h b/include/rootston/desktop.h
index dfe070ca..88c5ca90 100644
--- a/include/rootston/desktop.h
+++ b/include/rootston/desktop.h
@@ -22,6 +22,7 @@
#include <wlr/types/wlr_list.h>
#include <wlr/types/wlr_idle.h>
#include <wlr/types/wlr_idle_inhibit_v1.h>
+#include <wlr/types/wlr_screencopy_v1.h>
#include "rootston/view.h"
#include "rootston/config.h"
#include "rootston/output.h"
@@ -54,6 +55,7 @@ struct roots_desktop {
struct wlr_linux_dmabuf *linux_dmabuf;
struct wlr_layer_shell *layer_shell;
struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard;
+ struct wlr_screencopy_manager_v1 *screencopy;
struct wl_listener new_output;
struct wl_listener layout_change;
diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h
index fb427c89..1b138ea3 100644
--- a/include/wlr/render/interface.h
+++ b/include/wlr/render/interface.h
@@ -34,7 +34,7 @@ struct wlr_renderer_impl {
int (*get_dmabuf_modifiers)(struct wlr_renderer *renderer, int format,
uint64_t **modifiers);
bool (*read_pixels)(struct wlr_renderer *renderer, enum wl_shm_format fmt,
- uint32_t stride, uint32_t width, uint32_t height,
+ uint32_t *flags, uint32_t stride, uint32_t width, uint32_t height,
uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
void *data);
bool (*format_supported)(struct wlr_renderer *renderer,
diff --git a/include/wlr/render/wlr_renderer.h b/include/wlr/render/wlr_renderer.h
index c715e4b0..0650bf1b 100644
--- a/include/wlr/render/wlr_renderer.h
+++ b/include/wlr/render/wlr_renderer.h
@@ -7,6 +7,10 @@
#include <wlr/render/wlr_texture.h>
#include <wlr/types/wlr_box.h>
+enum wlr_renderer_read_pixels_flags {
+ WLR_RENDERER_READ_PIXELS_Y_INVERT = 1,
+};
+
struct wlr_renderer_impl;
struct wlr_renderer {
@@ -87,9 +91,12 @@ int wlr_renderer_get_dmabuf_modifiers(struct wlr_renderer *renderer, int format,
/**
* Reads out of pixels of the currently bound surface into data. `stride` is in
* bytes.
+ *
+ * If `flags` is not NULl, the caller indicates that it accepts frame flags
+ * defined in `enum wlr_renderer_read_pixels_flags`.
*/
bool wlr_renderer_read_pixels(struct wlr_renderer *r, enum wl_shm_format fmt,
- uint32_t stride, uint32_t width, uint32_t height,
+ uint32_t *flags, uint32_t stride, uint32_t width, uint32_t height,
uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y, void *data);
/**
* Checks if a format is supported.
diff --git a/include/wlr/types/wlr_screencopy_v1.h b/include/wlr/types/wlr_screencopy_v1.h
new file mode 100644
index 00000000..892687aa
--- /dev/null
+++ b/include/wlr/types/wlr_screencopy_v1.h
@@ -0,0 +1,39 @@
+#ifndef WLR_TYPES_WLR_SCREENCOPY_V1_H
+#define WLR_TYPES_WLR_SCREENCOPY_V1_H
+
+#include <wayland-server.h>
+
+struct wlr_screencopy_manager_v1 {
+ struct wl_global *global;
+ struct wl_list resources; // wl_resource
+ struct wl_list frames; // wlr_screencopy_frame_v1::link
+
+ struct wl_listener display_destroy;
+
+ void *data;
+};
+
+struct wlr_screencopy_frame_v1 {
+ struct wl_resource *resource;
+ struct wlr_screencopy_manager_v1 *manager;
+ struct wl_list link;
+
+ enum wl_shm_format format;
+ struct wlr_box box;
+ int stride;
+
+ struct wl_shm_buffer *buffer;
+ struct wl_listener buffer_destroy;
+
+ struct wlr_output *output;
+ struct wl_listener output_swap_buffers;
+
+ void *data;
+};
+
+struct wlr_screencopy_manager_v1 *wlr_screencopy_manager_v1_create(
+ struct wl_display *display);
+void wlr_screencopy_manager_v1_destroy(
+ struct wlr_screencopy_manager_v1 *screencopy);
+
+#endif
diff --git a/protocol/meson.build b/protocol/meson.build
index ca0d82b5..5ab82d84 100644
--- a/protocol/meson.build
+++ b/protocol/meson.build
@@ -42,6 +42,7 @@ protocols = [
'wlr-export-dmabuf-unstable-v1.xml',
'wlr-input-inhibitor-unstable-v1.xml',
'wlr-layer-shell-unstable-v1.xml',
+ 'wlr-screencopy-unstable-v1.xml',
]
client_protocols = [
@@ -51,8 +52,9 @@ client_protocols = [
'idle.xml',
'screenshooter.xml',
'wlr-export-dmabuf-unstable-v1.xml',
- 'wlr-layer-shell-unstable-v1.xml',
'wlr-input-inhibitor-unstable-v1.xml',
+ 'wlr-layer-shell-unstable-v1.xml',
+ 'wlr-screencopy-unstable-v1.xml',
]
wl_protos_src = []
diff --git a/protocol/wlr-screencopy-unstable-v1.xml b/protocol/wlr-screencopy-unstable-v1.xml
new file mode 100644
index 00000000..a7a2d172
--- /dev/null
+++ b/protocol/wlr-screencopy-unstable-v1.xml
@@ -0,0 +1,179 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="wlr_screencopy_unstable_v1">
+ <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
+ 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>
diff --git a/render/gles2/renderer.c b/render/gles2/renderer.c
index 05426fa9..5233ed1b 100644
--- a/render/gles2/renderer.c
+++ b/render/gles2/renderer.c
@@ -250,10 +250,11 @@ static int gles2_get_dmabuf_modifiers(struct wlr_renderer *wlr_renderer,
}
static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
- enum wl_shm_format wl_fmt, uint32_t stride, uint32_t width,
- uint32_t height, uint32_t src_x, uint32_t src_y, uint32_t dst_x,
- uint32_t dst_y, void *data) {
- gles2_get_renderer_in_context(wlr_renderer);
+ enum wl_shm_format wl_fmt, uint32_t *flags, uint32_t stride,
+ uint32_t width, uint32_t height, uint32_t src_x, uint32_t src_y,
+ uint32_t dst_x, uint32_t dst_y, void *data) {
+ struct wlr_gles2_renderer *renderer =
+ gles2_get_renderer_in_context(wlr_renderer);
const struct wlr_gles2_pixel_format *fmt = get_gles2_format_from_wl(wl_fmt);
if (fmt == NULL) {
@@ -266,17 +267,31 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
// Make sure any pending drawing is finished before we try to read it
glFinish();
- // Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
- // the lines out row by row
+ glGetError(); // Clear the error flag
+
unsigned char *p = data + dst_y * stride;
- for (size_t i = src_y; i < src_y + height; ++i) {
- glReadPixels(src_x, src_y + height - i - 1, width, 1, fmt->gl_format,
- fmt->gl_type, p + i * stride + dst_x * fmt->bpp / 8);
+ uint32_t pack_stride = width * fmt->bpp / 8;
+ if (pack_stride == stride && dst_x == 0 && flags != NULL) {
+ // Under these particular conditions, we can read the pixels with only
+ // one glReadPixels call
+ glReadPixels(src_x, renderer->viewport_height - height - src_y,
+ width, height, fmt->gl_format, fmt->gl_type, p);
+ *flags = WLR_RENDERER_READ_PIXELS_Y_INVERT;
+ } else {
+ // Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
+ // the lines out row by row
+ for (size_t i = src_y; i < src_y + height; ++i) {
+ glReadPixels(src_x, src_y + height - i - 1, width, 1, fmt->gl_format,
+ fmt->gl_type, p + i * stride + dst_x * fmt->bpp / 8);
+ }
+ if (flags != NULL) {
+ *flags = 0;
+ }
}
POP_GLES2_DEBUG;
- return true;
+ return glGetError() == GL_NO_ERROR;
}
static bool gles2_format_supported(struct wlr_renderer *wlr_renderer,
diff --git a/render/wlr_renderer.c b/render/wlr_renderer.c
index 00f1e411..d66edc13 100644
--- a/render/wlr_renderer.c
+++ b/render/wlr_renderer.c
@@ -139,14 +139,14 @@ int wlr_renderer_get_dmabuf_modifiers(struct wlr_renderer *r, int format,
}
bool wlr_renderer_read_pixels(struct wlr_renderer *r, enum wl_shm_format fmt,
- uint32_t stride, uint32_t width, uint32_t height,
+ uint32_t *flags, uint32_t stride, uint32_t width, uint32_t height,
uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
void *data) {
if (!r->impl->read_pixels) {
return false;
}
- return r->impl->read_pixels(r, fmt, stride, width, height, src_x, src_y,
- dst_x, dst_y, data);
+ return r->impl->read_pixels(r, fmt, flags, stride, width, height,
+ src_x, src_y, dst_x, dst_y, data);
}
bool wlr_renderer_format_supported(struct wlr_renderer *r,
diff --git a/rootston/desktop.c b/rootston/desktop.c
index 2bba06e2..d670c33b 100644
--- a/rootston/desktop.c
+++ b/rootston/desktop.c
@@ -875,6 +875,9 @@ struct roots_desktop *desktop_create(struct roots_server *server,
wl_signal_add(&desktop->virtual_keyboard->events.new_virtual_keyboard,
&desktop->virtual_keyboard_new);
desktop->virtual_keyboard_new.notify = handle_virtual_keyboard;
+
+ desktop->screencopy = wlr_screencopy_manager_v1_create(server->wl_display);
+
return desktop;
}
diff --git a/types/meson.build b/types/meson.build
index 6d6e0fa3..49f87bf8 100644
--- a/types/meson.build
+++ b/types/meson.build
@@ -50,6 +50,7 @@ lib_wlr_types = static_library(
'wlr_wl_shell.c',
'wlr_xcursor_manager.c',
'wlr_xdg_output.c',
+ 'wlr_screencopy_v1.c',
),
include_directories: wlr_inc,
dependencies: [pixman, xkbcommon, wayland_server, wlr_protos],
diff --git a/types/wlr_screencopy_v1.c b/types/wlr_screencopy_v1.c
new file mode 100644
index 00000000..0760eaaf
--- /dev/null
+++ b/types/wlr_screencopy_v1.c
@@ -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);
+}
diff --git a/types/wlr_screenshooter.c b/types/wlr_screenshooter.c
index e1386be6..5d9e9de3 100644
--- a/types/wlr_screenshooter.c
+++ b/types/wlr_screenshooter.c
@@ -50,8 +50,8 @@ static void output_handle_frame(struct wl_listener *listener, void *_data) {
int32_t stride = wl_shm_buffer_get_stride(shm_buffer);
wl_shm_buffer_begin_access(shm_buffer);
void *data = wl_shm_buffer_get_data(shm_buffer);
- bool ok = wlr_renderer_read_pixels(renderer, format, stride, width, height,
- 0, 0, 0, 0, data);
+ bool ok = wlr_renderer_read_pixels(renderer, format, NULL, stride,
+ width, height, 0, 0, 0, 0, data);
wl_shm_buffer_end_access(shm_buffer);
if (!ok) {