Commit 36bd4795 authored by emersion's avatar emersion

export-dmabuf: add basic and incomplete implementation

parent 9e26808c
#ifndef WLR_TYPES_WLR_EXPORT_DMABUF_V1_H
#define WLR_TYPES_WLR_EXPORT_DMABUF_V1_H
#include <wayland-server.h>
struct wlr_export_dmabuf_manager_v1;
struct wlr_export_dmabuf_frame_v1 {
struct wl_resource *resource;
struct wlr_export_dmabuf_manager_v1 *manager;
struct wl_list link;
struct wlr_output *output;
};
struct wlr_export_dmabuf_manager_v1 {
struct wl_global *global;
struct wl_list resources;
struct wl_list frames;
struct wl_listener display_destroy;
struct {
struct wl_signal destroy;
} events;
};
struct wlr_export_dmabuf_manager_v1 *wlr_export_dmabuf_manager_v1_create(
struct wl_display *display);
void wlr_export_dmabuf_manager_v1_destroy(
struct wlr_export_dmabuf_manager_v1 *manager);
#endif
......@@ -39,8 +39,9 @@ protocols = [
'screenshooter.xml',
'server-decoration.xml',
'virtual-keyboard-unstable-v1.xml',
'wlr-layer-shell-unstable-v1.xml',
'wlr-export-dmabuf-unstable-v1.xml',
'wlr-input-inhibitor-unstable-v1.xml',
'wlr-layer-shell-unstable-v1.xml',
]
client_protocols = [
......
This diff is collapsed.
......@@ -22,6 +22,7 @@ lib_wlr_types = static_library(
'wlr_box.c',
'wlr_compositor.c',
'wlr_cursor.c',
'wlr_export_dmabuf_v1.c',
'wlr_gamma_control.c',
'wlr_idle_inhibit_v1.c',
'wlr_idle.c',
......
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <wlr/types/wlr_export_dmabuf_v1.h>
#include <wlr/types/wlr_linux_dmabuf.h>
#include <wlr/types/wlr_output.h>
#include "wlr-export-dmabuf-unstable-v1-protocol.h"
#define EXPORT_DMABUF_MANAGER_VERSION 1
static const struct zwlr_export_dmabuf_frame_v1_interface frame_impl;
static struct wlr_export_dmabuf_frame_v1 *frame_from_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource,
&zwlr_export_dmabuf_frame_v1_interface, &frame_impl));
return wl_resource_get_user_data(resource);
}
static void frame_handle_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static const struct zwlr_export_dmabuf_frame_v1_interface frame_impl = {
.destroy = frame_handle_destroy,
};
static void frame_handle_resource_destroy(struct wl_resource *resource) {
struct wlr_export_dmabuf_frame_v1 *frame = frame_from_resource(resource);
wl_list_remove(&frame->link);
free(frame);
}
static const struct zwlr_export_dmabuf_manager_v1_interface manager_impl;
static struct wlr_export_dmabuf_manager_v1 *manager_from_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource,
&zwlr_export_dmabuf_manager_v1_interface, &manager_impl));
return wl_resource_get_user_data(resource);
}
static void manager_handle_capture_client(struct wl_client *client,
struct wl_resource *manager_resource, uint32_t id,
uint32_t client_id, int32_t overlay_cursor) {
// TODO
}
static void manager_handle_capture_output(struct wl_client *client,
struct wl_resource *manager_resource, uint32_t id,
struct wl_resource *output_resource) {
struct wlr_export_dmabuf_manager_v1 *manager =
manager_from_resource(manager_resource);
struct wlr_output *output = wlr_output_from_resource(output_resource);
struct wlr_export_dmabuf_frame_v1 *frame =
calloc(1, sizeof(struct wlr_export_dmabuf_frame_v1));
if (frame == NULL) {
wl_resource_post_no_memory(manager_resource);
return;
}
frame->manager = manager;
frame->output = output;
uint32_t version = wl_resource_get_version(manager_resource);
frame->resource = wl_resource_create(client,
&zwlr_export_dmabuf_frame_v1_interface, version, id);
if (frame->resource == NULL) {
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);
struct wlr_dmabuf_buffer_attribs attribs;
if (!wlr_output_export_dmabuf(output, &attribs)) {
zwlr_export_dmabuf_frame_v1_send_abort(frame->resource);
return;
}
// TODO: multiple layers support
uint32_t frame_flags = 0;
uint32_t mod_high = attribs.modifier[0] >> 32;
uint32_t mod_low = attribs.modifier[0];
zwlr_export_dmabuf_frame_v1_send_frame(frame->resource,
output->width, output->height, output->scale, output->transform,
attribs.flags, frame_flags, mod_high, mod_low, attribs.n_planes, 1);
zwlr_export_dmabuf_frame_v1_send_dma_layer(frame->resource, 0,
attribs.format, 1);
for (int i = 0; i < attribs.n_planes; ++i) {
// TODO: what to do if the kernel doesn't support seek on buffer
off_t size = lseek(attribs.fd[i], 0, SEEK_END);
zwlr_export_dmabuf_frame_v1_send_dma_object(frame->resource, i,
attribs.fd[i], size);
zwlr_export_dmabuf_frame_v1_send_dma_plane(frame->resource, i, 0, i,
attribs.offset[i], attribs.stride[i]);
}
// TODO: wait for the frame to be ready
// TODO: timestamps
zwlr_export_dmabuf_frame_v1_send_ready(frame->resource, 0, 0, 0);
}
static const struct zwlr_export_dmabuf_manager_v1_interface manager_impl = {
.capture_client = manager_handle_capture_client,
.capture_output = manager_handle_capture_output,
};
static 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_export_dmabuf_manager_v1 *manager = data;
struct wl_resource *resource = wl_resource_create(client,
&zwlr_export_dmabuf_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_export_dmabuf_manager_v1 *manager =
wl_container_of(listener, manager, display_destroy);
wlr_export_dmabuf_manager_v1_destroy(manager);
}
struct wlr_export_dmabuf_manager_v1 *wlr_export_dmabuf_manager_v1_create(
struct wl_display *display) {
struct wlr_export_dmabuf_manager_v1 *manager =
calloc(1, sizeof(struct wlr_export_dmabuf_manager_v1));
if (manager == NULL) {
return NULL;
}
wl_list_init(&manager->resources);
wl_list_init(&manager->frames);
manager->global = wl_global_create(display,
&zwlr_export_dmabuf_manager_v1_interface, EXPORT_DMABUF_MANAGER_VERSION,
manager, manager_bind);
if (manager->global == NULL) {
free(manager);
return NULL;
}
manager->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &manager->display_destroy);
return manager;
}
void wlr_export_dmabuf_manager_v1_destroy(
struct wlr_export_dmabuf_manager_v1 *manager) {
if (manager == NULL) {
return;
}
wl_list_remove(&manager->display_destroy.link);
wl_global_destroy(manager->global);
struct wl_resource *resource, *resource_tmp;
wl_resource_for_each_safe(resource, resource_tmp, &manager->resources) {
wl_resource_destroy(resource);
}
struct wlr_export_dmabuf_frame_v1 *frame, *frame_tmp;
wl_list_for_each_safe(frame, frame_tmp, &manager->frames, link) {
wl_resource_destroy(frame->resource);
}
free(manager);
}
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