1163 lines
35 KiB
C
1163 lines
35 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <drm_fourcc.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <wlr/backend.h>
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#include <wlr/config.h>
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#include <wlr/interfaces/wlr_buffer.h>
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#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_compositor.h>
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#include <wlr/types/wlr_linux_dmabuf_v1.h>
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#include <wlr/types/wlr_output_layer.h>
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#include <wlr/util/log.h>
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#include <xf86drm.h>
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#include "linux-dmabuf-v1-protocol.h"
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#include "render/drm_format_set.h"
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#include "util/shm.h"
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#if WLR_HAS_DRM_BACKEND
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#include <wlr/backend/drm.h>
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#endif
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#define LINUX_DMABUF_VERSION 5
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struct wlr_linux_buffer_params_v1 {
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struct wl_resource *resource;
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struct wlr_linux_dmabuf_v1 *linux_dmabuf;
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struct wlr_dmabuf_attributes attributes;
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bool has_modifier;
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};
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struct wlr_linux_dmabuf_feedback_v1_compiled_tranche {
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dev_t target_device;
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uint32_t flags; // bitfield of enum zwp_linux_dmabuf_feedback_v1_tranche_flags
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struct wl_array indices; // uint16_t
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};
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struct wlr_linux_dmabuf_feedback_v1_compiled {
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dev_t main_device;
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int table_fd;
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size_t table_size;
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size_t tranches_len;
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struct wlr_linux_dmabuf_feedback_v1_compiled_tranche tranches[];
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};
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struct wlr_linux_dmabuf_feedback_v1_table_entry {
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uint32_t format;
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uint32_t pad; // unused
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uint64_t modifier;
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};
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// TODO: switch back to static_assert once this fix propagates in stable trees:
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// https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255290
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_Static_assert(sizeof(struct wlr_linux_dmabuf_feedback_v1_table_entry) == 16,
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"Expected wlr_linux_dmabuf_feedback_v1_table_entry to be tightly packed");
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struct wlr_linux_dmabuf_v1_surface {
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struct wlr_surface *surface;
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struct wlr_linux_dmabuf_v1 *linux_dmabuf;
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struct wl_list link; // wlr_linux_dmabuf_v1.surfaces
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struct wlr_addon addon;
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struct wlr_linux_dmabuf_feedback_v1_compiled *feedback;
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struct wl_list feedback_resources; // wl_resource_get_link
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};
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static void buffer_handle_destroy(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static const struct wl_buffer_interface wl_buffer_impl = {
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.destroy = buffer_handle_destroy,
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};
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static bool buffer_resource_is_instance(struct wl_resource *resource) {
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return wl_resource_instance_of(resource, &wl_buffer_interface,
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&wl_buffer_impl);
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}
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struct wlr_dmabuf_v1_buffer *wlr_dmabuf_v1_buffer_try_from_buffer_resource(
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struct wl_resource *resource) {
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if (!buffer_resource_is_instance(resource) ||
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wl_resource_get_user_data(resource) == NULL) {
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return NULL;
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}
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return wl_resource_get_user_data(resource);
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}
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static const struct wlr_buffer_impl buffer_impl;
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static struct wlr_dmabuf_v1_buffer *dmabuf_v1_buffer_from_buffer(
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struct wlr_buffer *wlr_buffer) {
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assert(wlr_buffer->impl == &buffer_impl);
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struct wlr_dmabuf_v1_buffer *buffer = wl_container_of(wlr_buffer, buffer, base);
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return buffer;
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}
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static void buffer_destroy(struct wlr_buffer *wlr_buffer) {
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struct wlr_dmabuf_v1_buffer *buffer =
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dmabuf_v1_buffer_from_buffer(wlr_buffer);
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if (buffer->resource != NULL) {
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wl_resource_set_user_data(buffer->resource, NULL);
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}
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wlr_dmabuf_attributes_finish(&buffer->attributes);
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wl_list_remove(&buffer->release.link);
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free(buffer);
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}
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static bool buffer_get_dmabuf(struct wlr_buffer *wlr_buffer,
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struct wlr_dmabuf_attributes *attribs) {
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struct wlr_dmabuf_v1_buffer *buffer =
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dmabuf_v1_buffer_from_buffer(wlr_buffer);
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*attribs = buffer->attributes;
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return true;
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}
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static const struct wlr_buffer_impl buffer_impl = {
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.destroy = buffer_destroy,
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.get_dmabuf = buffer_get_dmabuf,
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};
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static void buffer_handle_release(struct wl_listener *listener, void *data) {
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struct wlr_dmabuf_v1_buffer *buffer =
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wl_container_of(listener, buffer, release);
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if (buffer->resource != NULL) {
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wl_buffer_send_release(buffer->resource);
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}
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}
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static const struct zwp_linux_buffer_params_v1_interface buffer_params_impl;
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static struct wlr_linux_buffer_params_v1 *params_from_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource,
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&zwp_linux_buffer_params_v1_interface, &buffer_params_impl));
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return wl_resource_get_user_data(resource);
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}
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static void params_destroy(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static void params_add(struct wl_client *client,
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struct wl_resource *params_resource, int32_t fd,
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uint32_t plane_idx, uint32_t offset, uint32_t stride,
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uint32_t modifier_hi, uint32_t modifier_lo) {
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struct wlr_linux_buffer_params_v1 *params =
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params_from_resource(params_resource);
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if (!params) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ALREADY_USED,
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"params was already used to create a wl_buffer");
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close(fd);
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return;
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}
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if (plane_idx >= WLR_DMABUF_MAX_PLANES) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_PLANE_IDX,
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"plane index %u > %u", plane_idx, WLR_DMABUF_MAX_PLANES);
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close(fd);
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return;
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}
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if (params->attributes.fd[plane_idx] != -1) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_PLANE_SET,
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"a dmabuf with FD %d has already been added for plane %u",
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params->attributes.fd[plane_idx], plane_idx);
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close(fd);
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return;
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}
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uint64_t modifier = ((uint64_t)modifier_hi << 32) | modifier_lo;
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if (params->has_modifier && modifier != params->attributes.modifier) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_FORMAT,
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"sent modifier %" PRIu64 " for plane %u, expected"
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" modifier %" PRIu64 " like other planes",
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modifier, plane_idx, params->attributes.modifier);
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close(fd);
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return;
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}
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params->attributes.modifier = modifier;
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params->has_modifier = true;
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params->attributes.fd[plane_idx] = fd;
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params->attributes.offset[plane_idx] = offset;
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params->attributes.stride[plane_idx] = stride;
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params->attributes.n_planes++;
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}
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static void buffer_handle_resource_destroy(struct wl_resource *buffer_resource) {
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struct wlr_dmabuf_v1_buffer *buffer =
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wlr_dmabuf_v1_buffer_try_from_buffer_resource(buffer_resource);
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assert(buffer != NULL);
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buffer->resource = NULL;
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wlr_buffer_drop(&buffer->base);
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}
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static bool check_import_dmabuf(struct wlr_linux_dmabuf_v1 *linux_dmabuf,
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struct wlr_dmabuf_attributes *attribs) {
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if (linux_dmabuf->main_device_fd < 0) {
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return true;
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}
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// TODO: check number of planes
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for (int i = 0; i < attribs->n_planes; i++) {
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uint32_t handle = 0;
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if (drmPrimeFDToHandle(linux_dmabuf->main_device_fd, attribs->fd[i], &handle) != 0) {
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wlr_log_errno(WLR_DEBUG, "Failed to import DMA-BUF FD");
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return false;
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}
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if (drmCloseBufferHandle(linux_dmabuf->main_device_fd, handle) != 0) {
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wlr_log_errno(WLR_ERROR, "Failed to close buffer handle");
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return false;
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}
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}
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return true;
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}
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static void params_create_common(struct wl_resource *params_resource,
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uint32_t buffer_id, int32_t width, int32_t height, uint32_t format,
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uint32_t flags) {
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struct wlr_linux_buffer_params_v1 *params =
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params_from_resource(params_resource);
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if (!params) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ALREADY_USED,
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"params was already used to create a wl_buffer");
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return;
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}
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struct wlr_dmabuf_attributes attribs = params->attributes;
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struct wlr_linux_dmabuf_v1 *linux_dmabuf = params->linux_dmabuf;
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// Make the params resource inert
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wl_resource_set_user_data(params_resource, NULL);
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free(params);
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if (!attribs.n_planes) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
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"no dmabuf has been added to the params");
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goto err_out;
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}
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if (attribs.fd[0] == -1) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
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"no dmabuf has been added for plane 0");
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goto err_out;
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}
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if ((attribs.fd[3] >= 0 || attribs.fd[2] >= 0) &&
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(attribs.fd[2] == -1 || attribs.fd[1] == -1)) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
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"gap in dmabuf planes");
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goto err_out;
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}
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/* reject unknown flags */
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uint32_t all_flags = ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT |
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ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_INTERLACED |
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ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_BOTTOM_FIRST;
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if (flags & ~all_flags) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_FORMAT,
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"Unknown dmabuf flags %"PRIu32, flags);
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goto err_out;
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}
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if (flags != 0) {
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wlr_log(WLR_ERROR, "dmabuf flags aren't supported");
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goto err_failed;
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}
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attribs.width = width;
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attribs.height = height;
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attribs.format = format;
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if (width < 1 || height < 1) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_DIMENSIONS,
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"invalid width %d or height %d", width, height);
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goto err_out;
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}
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for (int i = 0; i < attribs.n_planes; i++) {
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if ((uint64_t)attribs.offset[i]
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+ attribs.stride[i] > UINT32_MAX) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
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"size overflow for plane %d", i);
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goto err_out;
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}
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if ((uint64_t)attribs.offset[i]
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+ (uint64_t)attribs.stride[i] * height > UINT32_MAX) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
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"size overflow for plane %d", i);
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goto err_out;
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}
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off_t size = lseek(attribs.fd[i], 0, SEEK_END);
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if (size == -1) {
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// Skip checks if kernel does no support seek on buffer
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continue;
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}
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if (attribs.offset[i] > size) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
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"invalid offset %" PRIu32 " for plane %d",
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attribs.offset[i], i);
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goto err_out;
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}
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if (attribs.offset[i] + attribs.stride[i] > size ||
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attribs.stride[i] == 0) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
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"invalid stride %" PRIu32 " for plane %d",
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attribs.stride[i], i);
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goto err_out;
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}
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// planes > 0 might be subsampled according to fourcc format
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if (i == 0 && attribs.offset[i] +
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attribs.stride[i] * height > size) {
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
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"invalid buffer stride or height for plane %d", i);
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goto err_out;
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}
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}
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/* Check if dmabuf is usable */
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if (!check_import_dmabuf(linux_dmabuf, &attribs)) {
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goto err_failed;
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}
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struct wlr_dmabuf_v1_buffer *buffer = calloc(1, sizeof(*buffer));
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if (!buffer) {
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wl_resource_post_no_memory(params_resource);
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goto err_failed;
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}
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wlr_buffer_init(&buffer->base, &buffer_impl, attribs.width, attribs.height);
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struct wl_client *client = wl_resource_get_client(params_resource);
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buffer->resource = wl_resource_create(client, &wl_buffer_interface,
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1, buffer_id);
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if (!buffer->resource) {
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wl_resource_post_no_memory(params_resource);
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free(buffer);
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goto err_failed;
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}
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wl_resource_set_implementation(buffer->resource,
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&wl_buffer_impl, buffer, buffer_handle_resource_destroy);
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buffer->attributes = attribs;
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buffer->release.notify = buffer_handle_release;
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wl_signal_add(&buffer->base.events.release, &buffer->release);
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/* send 'created' event when the request is not for an immediate
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* import, that is buffer_id is zero */
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if (buffer_id == 0) {
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zwp_linux_buffer_params_v1_send_created(params_resource,
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buffer->resource);
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}
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return;
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err_failed:
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if (buffer_id == 0) {
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zwp_linux_buffer_params_v1_send_failed(params_resource);
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} else {
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/* since the behavior is left implementation defined by the
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* protocol in case of create_immed failure due to an unknown cause,
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* we choose to treat it as a fatal error and immediately kill the
|
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* client instead of creating an invalid handle and waiting for it
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* to be used.
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*/
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wl_resource_post_error(params_resource,
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ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_WL_BUFFER,
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"importing the supplied dmabufs failed");
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}
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err_out:
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wlr_dmabuf_attributes_finish(&attribs);
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}
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static void params_create(struct wl_client *client,
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struct wl_resource *params_resource,
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int32_t width, int32_t height, uint32_t format, uint32_t flags) {
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params_create_common(params_resource, 0, width, height, format,
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flags);
|
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}
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|
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static void params_create_immed(struct wl_client *client,
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struct wl_resource *params_resource, uint32_t buffer_id,
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int32_t width, int32_t height, uint32_t format, uint32_t flags) {
|
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params_create_common(params_resource, buffer_id, width, height,
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format, flags);
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}
|
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static const struct zwp_linux_buffer_params_v1_interface buffer_params_impl = {
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.destroy = params_destroy,
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.add = params_add,
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.create = params_create,
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.create_immed = params_create_immed,
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};
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|
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static void params_handle_resource_destroy(struct wl_resource *resource) {
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struct wlr_linux_buffer_params_v1 *params = params_from_resource(resource);
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if (!params) {
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return;
|
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}
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wlr_dmabuf_attributes_finish(¶ms->attributes);
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free(params);
|
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}
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static const struct zwp_linux_dmabuf_v1_interface linux_dmabuf_impl;
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static struct wlr_linux_dmabuf_v1 *linux_dmabuf_from_resource(
|
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource, &zwp_linux_dmabuf_v1_interface,
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&linux_dmabuf_impl));
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struct wlr_linux_dmabuf_v1 *dmabuf = wl_resource_get_user_data(resource);
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assert(dmabuf);
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return dmabuf;
|
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}
|
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|
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static void linux_dmabuf_create_params(struct wl_client *client,
|
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struct wl_resource *linux_dmabuf_resource,
|
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uint32_t params_id) {
|
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struct wlr_linux_dmabuf_v1 *linux_dmabuf =
|
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linux_dmabuf_from_resource(linux_dmabuf_resource);
|
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|
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struct wlr_linux_buffer_params_v1 *params = calloc(1, sizeof(*params));
|
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if (!params) {
|
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wl_resource_post_no_memory(linux_dmabuf_resource);
|
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return;
|
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}
|
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|
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for (int i = 0; i < WLR_DMABUF_MAX_PLANES; i++) {
|
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params->attributes.fd[i] = -1;
|
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}
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|
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params->linux_dmabuf = linux_dmabuf;
|
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|
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uint32_t version = wl_resource_get_version(linux_dmabuf_resource);
|
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params->resource = wl_resource_create(client,
|
|
&zwp_linux_buffer_params_v1_interface, version, params_id);
|
|
if (!params->resource) {
|
|
free(params);
|
|
wl_resource_post_no_memory(linux_dmabuf_resource);
|
|
return;
|
|
}
|
|
wl_resource_set_implementation(params->resource,
|
|
&buffer_params_impl, params, params_handle_resource_destroy);
|
|
}
|
|
|
|
static void linux_dmabuf_feedback_destroy(struct wl_client *client,
|
|
struct wl_resource *resource) {
|
|
wl_resource_destroy(resource);
|
|
}
|
|
|
|
static const struct zwp_linux_dmabuf_feedback_v1_interface
|
|
linux_dmabuf_feedback_impl = {
|
|
.destroy = linux_dmabuf_feedback_destroy,
|
|
};
|
|
|
|
static ssize_t get_drm_format_set_index(const struct wlr_drm_format_set *set,
|
|
uint32_t format, uint64_t modifier) {
|
|
bool format_found = false;
|
|
const struct wlr_drm_format *fmt;
|
|
size_t idx = 0;
|
|
for (size_t i = 0; i < set->len; i++) {
|
|
fmt = &set->formats[i];
|
|
if (fmt->format == format) {
|
|
format_found = true;
|
|
break;
|
|
}
|
|
idx += fmt->len;
|
|
}
|
|
if (!format_found) {
|
|
return -1;
|
|
}
|
|
|
|
for (size_t i = 0; i < fmt->len; i++) {
|
|
if (fmt->modifiers[i] == modifier) {
|
|
return idx;
|
|
}
|
|
idx++;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static struct wlr_linux_dmabuf_feedback_v1_compiled *feedback_compile(
|
|
const struct wlr_linux_dmabuf_feedback_v1 *feedback) {
|
|
const struct wlr_linux_dmabuf_feedback_v1_tranche *tranches = feedback->tranches.data;
|
|
size_t tranches_len = feedback->tranches.size / sizeof(struct wlr_linux_dmabuf_feedback_v1_tranche);
|
|
assert(tranches_len > 0);
|
|
|
|
// Make one big format set that contains all formats across all tranches so that we
|
|
// can build an index
|
|
struct wlr_drm_format_set all_formats = {0};
|
|
for (size_t i = 0; i < tranches_len; i++) {
|
|
const struct wlr_linux_dmabuf_feedback_v1_tranche *tranche = &tranches[i];
|
|
if (!wlr_drm_format_set_union(&all_formats, &all_formats, &tranche->formats)) {
|
|
wlr_log(WLR_ERROR, "Failed to union scanout formats into one tranche");
|
|
goto err_all_formats;
|
|
}
|
|
}
|
|
|
|
size_t table_len = 0;
|
|
for (size_t i = 0; i < all_formats.len; i++) {
|
|
const struct wlr_drm_format *fmt = &all_formats.formats[i];
|
|
table_len += fmt->len;
|
|
}
|
|
assert(table_len > 0);
|
|
|
|
size_t table_size =
|
|
table_len * sizeof(struct wlr_linux_dmabuf_feedback_v1_table_entry);
|
|
int rw_fd, ro_fd;
|
|
if (!allocate_shm_file_pair(table_size, &rw_fd, &ro_fd)) {
|
|
wlr_log(WLR_ERROR, "Failed to allocate shm file for format table");
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_table_entry *table =
|
|
mmap(NULL, table_size, PROT_READ | PROT_WRITE, MAP_SHARED, rw_fd, 0);
|
|
if (table == MAP_FAILED) {
|
|
wlr_log_errno(WLR_ERROR, "mmap failed");
|
|
close(rw_fd);
|
|
close(ro_fd);
|
|
goto err_all_formats;
|
|
}
|
|
|
|
close(rw_fd);
|
|
|
|
size_t n = 0;
|
|
for (size_t i = 0; i < all_formats.len; i++) {
|
|
const struct wlr_drm_format *fmt = &all_formats.formats[i];
|
|
|
|
for (size_t k = 0; k < fmt->len; k++) {
|
|
table[n] = (struct wlr_linux_dmabuf_feedback_v1_table_entry){
|
|
.format = fmt->format,
|
|
.modifier = fmt->modifiers[k],
|
|
};
|
|
n++;
|
|
}
|
|
}
|
|
assert(n == table_len);
|
|
|
|
munmap(table, table_size);
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_compiled *compiled = calloc(1, sizeof(*compiled) +
|
|
tranches_len * sizeof(struct wlr_linux_dmabuf_feedback_v1_compiled_tranche));
|
|
if (compiled == NULL) {
|
|
close(ro_fd);
|
|
goto err_all_formats;
|
|
}
|
|
|
|
compiled->main_device = feedback->main_device;
|
|
compiled->tranches_len = tranches_len;
|
|
compiled->table_fd = ro_fd;
|
|
compiled->table_size = table_size;
|
|
|
|
// Build the indices lists for all tranches
|
|
for (size_t i = 0; i < tranches_len; i++) {
|
|
const struct wlr_linux_dmabuf_feedback_v1_tranche *tranche = &tranches[i];
|
|
struct wlr_linux_dmabuf_feedback_v1_compiled_tranche *compiled_tranche =
|
|
&compiled->tranches[i];
|
|
|
|
compiled_tranche->target_device = tranche->target_device;
|
|
compiled_tranche->flags = tranche->flags;
|
|
|
|
wl_array_init(&compiled_tranche->indices);
|
|
if (!wl_array_add(&compiled_tranche->indices, table_len * sizeof(uint16_t))) {
|
|
wlr_log(WLR_ERROR, "Failed to allocate tranche indices array");
|
|
goto error_compiled;
|
|
}
|
|
|
|
n = 0;
|
|
uint16_t *indices = compiled_tranche->indices.data;
|
|
for (size_t j = 0; j < tranche->formats.len; j++) {
|
|
const struct wlr_drm_format *fmt = &tranche->formats.formats[j];
|
|
for (size_t k = 0; k < fmt->len; k++) {
|
|
ssize_t index = get_drm_format_set_index(
|
|
&all_formats, fmt->format, fmt->modifiers[k]);
|
|
if (index < 0) {
|
|
wlr_log(WLR_ERROR, "Format 0x%" PRIX32 " and modifier "
|
|
"0x%" PRIX64 " are in tranche #%zu but are missing "
|
|
"from the fallback tranche",
|
|
fmt->format, fmt->modifiers[k], i);
|
|
goto error_compiled;
|
|
}
|
|
indices[n] = index;
|
|
n++;
|
|
}
|
|
}
|
|
compiled_tranche->indices.size = n * sizeof(uint16_t);
|
|
}
|
|
|
|
wlr_drm_format_set_finish(&all_formats);
|
|
|
|
return compiled;
|
|
|
|
error_compiled:
|
|
close(compiled->table_fd);
|
|
free(compiled);
|
|
err_all_formats:
|
|
wlr_drm_format_set_finish(&all_formats);
|
|
return NULL;
|
|
}
|
|
|
|
static void compiled_feedback_destroy(
|
|
struct wlr_linux_dmabuf_feedback_v1_compiled *feedback) {
|
|
if (feedback == NULL) {
|
|
return;
|
|
}
|
|
for (size_t i = 0; i < feedback->tranches_len; i++) {
|
|
wl_array_release(&feedback->tranches[i].indices);
|
|
}
|
|
close(feedback->table_fd);
|
|
free(feedback);
|
|
}
|
|
|
|
static void feedback_tranche_send(
|
|
const struct wlr_linux_dmabuf_feedback_v1_compiled_tranche *tranche,
|
|
struct wl_resource *resource) {
|
|
struct wl_array dev_array = {
|
|
.size = sizeof(tranche->target_device),
|
|
.data = (void *)&tranche->target_device,
|
|
};
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_target_device(resource, &dev_array);
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_flags(resource, tranche->flags);
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_formats(resource,
|
|
(struct wl_array *)&tranche->indices);
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_done(resource);
|
|
}
|
|
|
|
static void feedback_send(const struct wlr_linux_dmabuf_feedback_v1_compiled *feedback,
|
|
struct wl_resource *resource) {
|
|
struct wl_array dev_array = {
|
|
.size = sizeof(feedback->main_device),
|
|
.data = (void *)&feedback->main_device,
|
|
};
|
|
zwp_linux_dmabuf_feedback_v1_send_main_device(resource, &dev_array);
|
|
|
|
zwp_linux_dmabuf_feedback_v1_send_format_table(resource,
|
|
feedback->table_fd, feedback->table_size);
|
|
|
|
for (size_t i = 0; i < feedback->tranches_len; i++) {
|
|
feedback_tranche_send(&feedback->tranches[i], resource);
|
|
}
|
|
|
|
zwp_linux_dmabuf_feedback_v1_send_done(resource);
|
|
}
|
|
|
|
static void linux_dmabuf_get_default_feedback(struct wl_client *client,
|
|
struct wl_resource *resource, uint32_t id) {
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf =
|
|
linux_dmabuf_from_resource(resource);
|
|
|
|
uint32_t version = wl_resource_get_version(resource);
|
|
struct wl_resource *feedback_resource = wl_resource_create(client,
|
|
&zwp_linux_dmabuf_feedback_v1_interface, version, id);
|
|
if (feedback_resource == NULL) {
|
|
wl_client_post_no_memory(client);
|
|
return;
|
|
}
|
|
wl_resource_set_implementation(feedback_resource, &linux_dmabuf_feedback_impl,
|
|
NULL, NULL);
|
|
|
|
feedback_send(linux_dmabuf->default_feedback, feedback_resource);
|
|
}
|
|
|
|
static void surface_destroy(struct wlr_linux_dmabuf_v1_surface *surface) {
|
|
struct wl_resource *resource, *resource_tmp;
|
|
wl_resource_for_each_safe(resource, resource_tmp, &surface->feedback_resources) {
|
|
struct wl_list *link = wl_resource_get_link(resource);
|
|
wl_list_remove(link);
|
|
wl_list_init(link);
|
|
}
|
|
|
|
compiled_feedback_destroy(surface->feedback);
|
|
|
|
wlr_addon_finish(&surface->addon);
|
|
wl_list_remove(&surface->link);
|
|
free(surface);
|
|
}
|
|
|
|
static void surface_addon_destroy(struct wlr_addon *addon) {
|
|
struct wlr_linux_dmabuf_v1_surface *surface =
|
|
wl_container_of(addon, surface, addon);
|
|
surface_destroy(surface);
|
|
}
|
|
|
|
static const struct wlr_addon_interface surface_addon_impl = {
|
|
.name = "wlr_linux_dmabuf_v1_surface",
|
|
.destroy = surface_addon_destroy,
|
|
};
|
|
|
|
static struct wlr_linux_dmabuf_v1_surface *surface_get_or_create(
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf,
|
|
struct wlr_surface *wlr_surface) {
|
|
struct wlr_addon *addon =
|
|
wlr_addon_find(&wlr_surface->addons, linux_dmabuf, &surface_addon_impl);
|
|
if (addon != NULL) {
|
|
struct wlr_linux_dmabuf_v1_surface *surface =
|
|
wl_container_of(addon, surface, addon);
|
|
return surface;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_v1_surface *surface = calloc(1, sizeof(*surface));
|
|
if (surface == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
surface->surface = wlr_surface;
|
|
surface->linux_dmabuf = linux_dmabuf;
|
|
wl_list_init(&surface->feedback_resources);
|
|
wlr_addon_init(&surface->addon, &wlr_surface->addons, linux_dmabuf,
|
|
&surface_addon_impl);
|
|
wl_list_insert(&linux_dmabuf->surfaces, &surface->link);
|
|
|
|
return surface;
|
|
}
|
|
|
|
static const struct wlr_linux_dmabuf_feedback_v1_compiled *surface_get_feedback(
|
|
struct wlr_linux_dmabuf_v1_surface *surface) {
|
|
if (surface->feedback != NULL) {
|
|
return surface->feedback;
|
|
}
|
|
return surface->linux_dmabuf->default_feedback;
|
|
}
|
|
|
|
static void surface_feedback_handle_resource_destroy(struct wl_resource *resource) {
|
|
wl_list_remove(wl_resource_get_link(resource));
|
|
}
|
|
|
|
static void linux_dmabuf_get_surface_feedback(struct wl_client *client,
|
|
struct wl_resource *resource, uint32_t id,
|
|
struct wl_resource *surface_resource) {
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf =
|
|
linux_dmabuf_from_resource(resource);
|
|
struct wlr_surface *wlr_surface = wlr_surface_from_resource(surface_resource);
|
|
|
|
struct wlr_linux_dmabuf_v1_surface *surface =
|
|
surface_get_or_create(linux_dmabuf, wlr_surface);
|
|
if (surface == NULL) {
|
|
wl_client_post_no_memory(client);
|
|
return;
|
|
}
|
|
|
|
uint32_t version = wl_resource_get_version(resource);
|
|
struct wl_resource *feedback_resource = wl_resource_create(client,
|
|
&zwp_linux_dmabuf_feedback_v1_interface, version, id);
|
|
if (feedback_resource == NULL) {
|
|
wl_client_post_no_memory(client);
|
|
return;
|
|
}
|
|
wl_resource_set_implementation(feedback_resource, &linux_dmabuf_feedback_impl,
|
|
NULL, surface_feedback_handle_resource_destroy);
|
|
wl_list_insert(&surface->feedback_resources, wl_resource_get_link(feedback_resource));
|
|
|
|
feedback_send(surface_get_feedback(surface), feedback_resource);
|
|
}
|
|
|
|
static void linux_dmabuf_destroy(struct wl_client *client,
|
|
struct wl_resource *resource) {
|
|
wl_resource_destroy(resource);
|
|
}
|
|
|
|
static const struct zwp_linux_dmabuf_v1_interface linux_dmabuf_impl = {
|
|
.destroy = linux_dmabuf_destroy,
|
|
.create_params = linux_dmabuf_create_params,
|
|
.get_default_feedback = linux_dmabuf_get_default_feedback,
|
|
.get_surface_feedback = linux_dmabuf_get_surface_feedback,
|
|
};
|
|
|
|
static void linux_dmabuf_send_modifiers(struct wl_resource *resource,
|
|
const struct wlr_drm_format *fmt) {
|
|
if (wl_resource_get_version(resource) < ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION) {
|
|
if (wlr_drm_format_has(fmt, DRM_FORMAT_MOD_INVALID)) {
|
|
zwp_linux_dmabuf_v1_send_format(resource, fmt->format);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// In case only INVALID and LINEAR are advertised, send INVALID only due to XWayland:
|
|
// https://gitlab.freedesktop.org/xorg/xserver/-/issues/1166
|
|
if (fmt->len == 2 && wlr_drm_format_has(fmt, DRM_FORMAT_MOD_INVALID)
|
|
&& wlr_drm_format_has(fmt, DRM_FORMAT_MOD_LINEAR)) {
|
|
uint64_t mod = DRM_FORMAT_MOD_INVALID;
|
|
zwp_linux_dmabuf_v1_send_modifier(resource, fmt->format,
|
|
mod >> 32, mod & 0xFFFFFFFF);
|
|
return;
|
|
}
|
|
|
|
for (size_t i = 0; i < fmt->len; i++) {
|
|
uint64_t mod = fmt->modifiers[i];
|
|
zwp_linux_dmabuf_v1_send_modifier(resource, fmt->format,
|
|
mod >> 32, mod & 0xFFFFFFFF);
|
|
}
|
|
}
|
|
|
|
static void linux_dmabuf_send_formats(struct wlr_linux_dmabuf_v1 *linux_dmabuf,
|
|
struct wl_resource *resource) {
|
|
for (size_t i = 0; i < linux_dmabuf->default_formats.len; i++) {
|
|
const struct wlr_drm_format *fmt = &linux_dmabuf->default_formats.formats[i];
|
|
linux_dmabuf_send_modifiers(resource, fmt);
|
|
}
|
|
}
|
|
|
|
static void linux_dmabuf_bind(struct wl_client *client, void *data,
|
|
uint32_t version, uint32_t id) {
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf = data;
|
|
|
|
struct wl_resource *resource = wl_resource_create(client,
|
|
&zwp_linux_dmabuf_v1_interface, version, id);
|
|
if (resource == NULL) {
|
|
wl_client_post_no_memory(client);
|
|
return;
|
|
}
|
|
wl_resource_set_implementation(resource, &linux_dmabuf_impl,
|
|
linux_dmabuf, NULL);
|
|
|
|
if (version < ZWP_LINUX_DMABUF_V1_GET_DEFAULT_FEEDBACK_SINCE_VERSION) {
|
|
linux_dmabuf_send_formats(linux_dmabuf, resource);
|
|
}
|
|
}
|
|
|
|
static struct wlr_buffer *buffer_from_resource(struct wl_resource *resource) {
|
|
struct wlr_dmabuf_v1_buffer *buffer =
|
|
wlr_dmabuf_v1_buffer_try_from_buffer_resource(resource);
|
|
assert(buffer != NULL);
|
|
return &buffer->base;
|
|
}
|
|
|
|
static const struct wlr_buffer_resource_interface buffer_resource_interface = {
|
|
.name = "wlr_dmabuf_v1_buffer",
|
|
.is_instance = buffer_resource_is_instance,
|
|
.from_resource = buffer_from_resource,
|
|
};
|
|
|
|
static void linux_dmabuf_v1_destroy(struct wlr_linux_dmabuf_v1 *linux_dmabuf) {
|
|
wl_signal_emit_mutable(&linux_dmabuf->events.destroy, linux_dmabuf);
|
|
|
|
struct wlr_linux_dmabuf_v1_surface *surface, *surface_tmp;
|
|
wl_list_for_each_safe(surface, surface_tmp, &linux_dmabuf->surfaces, link) {
|
|
surface_destroy(surface);
|
|
}
|
|
|
|
compiled_feedback_destroy(linux_dmabuf->default_feedback);
|
|
wlr_drm_format_set_finish(&linux_dmabuf->default_formats);
|
|
if (linux_dmabuf->main_device_fd >= 0) {
|
|
close(linux_dmabuf->main_device_fd);
|
|
}
|
|
|
|
wl_list_remove(&linux_dmabuf->display_destroy.link);
|
|
|
|
wl_global_destroy(linux_dmabuf->global);
|
|
free(linux_dmabuf);
|
|
}
|
|
|
|
static void handle_display_destroy(struct wl_listener *listener, void *data) {
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf =
|
|
wl_container_of(listener, linux_dmabuf, display_destroy);
|
|
linux_dmabuf_v1_destroy(linux_dmabuf);
|
|
}
|
|
|
|
static bool set_default_feedback(struct wlr_linux_dmabuf_v1 *linux_dmabuf,
|
|
const struct wlr_linux_dmabuf_feedback_v1 *feedback) {
|
|
struct wlr_linux_dmabuf_feedback_v1_compiled *compiled = feedback_compile(feedback);
|
|
if (compiled == NULL) {
|
|
return false;
|
|
}
|
|
|
|
drmDevice *device = NULL;
|
|
if (drmGetDeviceFromDevId(feedback->main_device, 0, &device) != 0) {
|
|
wlr_log_errno(WLR_ERROR, "drmGetDeviceFromDevId failed");
|
|
goto error_compiled;
|
|
}
|
|
|
|
int main_device_fd = -1;
|
|
if (device->available_nodes & (1 << DRM_NODE_RENDER)) {
|
|
const char *name = device->nodes[DRM_NODE_RENDER];
|
|
main_device_fd = open(name, O_RDWR | O_CLOEXEC);
|
|
drmFreeDevice(&device);
|
|
if (main_device_fd < 0) {
|
|
wlr_log_errno(WLR_ERROR, "Failed to open DRM device %s", name);
|
|
goto error_compiled;
|
|
}
|
|
} else {
|
|
// Likely a split display/render setup. Unfortunately we have no way to
|
|
// get back the proper render node used by the renderer under-the-hood.
|
|
// TODO: drop once mesa!24825 is widespread
|
|
assert(device->available_nodes & (1 << DRM_NODE_PRIMARY));
|
|
wlr_log(WLR_DEBUG, "DRM device %s has no render node, "
|
|
"skipping DMA-BUF import checks", device->nodes[DRM_NODE_PRIMARY]);
|
|
drmFreeDevice(&device);
|
|
}
|
|
|
|
size_t tranches_len =
|
|
feedback->tranches.size / sizeof(struct wlr_linux_dmabuf_feedback_v1_tranche);
|
|
const struct wlr_linux_dmabuf_feedback_v1_tranche *tranches = feedback->tranches.data;
|
|
struct wlr_drm_format_set formats = {0};
|
|
for (size_t i = 0; i < tranches_len; i++) {
|
|
const struct wlr_linux_dmabuf_feedback_v1_tranche *tranche = &tranches[i];
|
|
|
|
if (!wlr_drm_format_set_union(&formats, &formats, &tranche->formats)) {
|
|
goto error_formats;
|
|
}
|
|
}
|
|
|
|
compiled_feedback_destroy(linux_dmabuf->default_feedback);
|
|
linux_dmabuf->default_feedback = compiled;
|
|
|
|
if (linux_dmabuf->main_device_fd >= 0) {
|
|
close(linux_dmabuf->main_device_fd);
|
|
}
|
|
linux_dmabuf->main_device_fd = main_device_fd;
|
|
|
|
wlr_drm_format_set_finish(&linux_dmabuf->default_formats);
|
|
linux_dmabuf->default_formats = formats;
|
|
|
|
return true;
|
|
|
|
error_formats:
|
|
wlr_drm_format_set_finish(&formats);
|
|
error_compiled:
|
|
compiled_feedback_destroy(compiled);
|
|
return false;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_v1 *wlr_linux_dmabuf_v1_create(struct wl_display *display,
|
|
uint32_t version, const struct wlr_linux_dmabuf_feedback_v1 *default_feedback) {
|
|
assert(version <= LINUX_DMABUF_VERSION);
|
|
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf = calloc(1, sizeof(*linux_dmabuf));
|
|
if (linux_dmabuf == NULL) {
|
|
wlr_log(WLR_ERROR, "could not create simple dmabuf manager");
|
|
return NULL;
|
|
}
|
|
linux_dmabuf->main_device_fd = -1;
|
|
|
|
wl_list_init(&linux_dmabuf->surfaces);
|
|
wl_signal_init(&linux_dmabuf->events.destroy);
|
|
|
|
linux_dmabuf->global = wl_global_create(display, &zwp_linux_dmabuf_v1_interface,
|
|
version, linux_dmabuf, linux_dmabuf_bind);
|
|
if (!linux_dmabuf->global) {
|
|
wlr_log(WLR_ERROR, "could not create linux dmabuf v1 wl global");
|
|
goto error_linux_dmabuf;
|
|
}
|
|
|
|
if (!set_default_feedback(linux_dmabuf, default_feedback)) {
|
|
goto error_global;
|
|
}
|
|
|
|
linux_dmabuf->display_destroy.notify = handle_display_destroy;
|
|
wl_display_add_destroy_listener(display, &linux_dmabuf->display_destroy);
|
|
|
|
wlr_buffer_register_resource_interface(&buffer_resource_interface);
|
|
|
|
return linux_dmabuf;
|
|
|
|
error_global:
|
|
wl_global_destroy(linux_dmabuf->global);
|
|
error_linux_dmabuf:
|
|
free(linux_dmabuf);
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_v1 *wlr_linux_dmabuf_v1_create_with_renderer(struct wl_display *display,
|
|
uint32_t version, struct wlr_renderer *renderer) {
|
|
const struct wlr_linux_dmabuf_feedback_v1_init_options options = {
|
|
.main_renderer = renderer,
|
|
};
|
|
struct wlr_linux_dmabuf_feedback_v1 feedback = {0};
|
|
if (!wlr_linux_dmabuf_feedback_v1_init_with_options(&feedback, &options)) {
|
|
return NULL;
|
|
}
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf =
|
|
wlr_linux_dmabuf_v1_create(display, version, &feedback);
|
|
wlr_linux_dmabuf_feedback_v1_finish(&feedback);
|
|
return linux_dmabuf;
|
|
}
|
|
|
|
bool wlr_linux_dmabuf_v1_set_surface_feedback(
|
|
struct wlr_linux_dmabuf_v1 *linux_dmabuf,
|
|
struct wlr_surface *wlr_surface,
|
|
const struct wlr_linux_dmabuf_feedback_v1 *feedback) {
|
|
struct wlr_linux_dmabuf_v1_surface *surface =
|
|
surface_get_or_create(linux_dmabuf, wlr_surface);
|
|
if (surface == NULL) {
|
|
return false;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_compiled *compiled = NULL;
|
|
if (feedback != NULL) {
|
|
compiled = feedback_compile(feedback);
|
|
if (compiled == NULL) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
compiled_feedback_destroy(surface->feedback);
|
|
surface->feedback = compiled;
|
|
|
|
struct wl_resource *resource;
|
|
wl_resource_for_each(resource, &surface->feedback_resources) {
|
|
feedback_send(surface_get_feedback(surface), resource);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_tranche *wlr_linux_dmabuf_feedback_add_tranche(
|
|
struct wlr_linux_dmabuf_feedback_v1 *feedback) {
|
|
struct wlr_linux_dmabuf_feedback_v1_tranche *tranche =
|
|
wl_array_add(&feedback->tranches, sizeof(*tranche));
|
|
if (tranche == NULL) {
|
|
wlr_log_errno(WLR_ERROR, "Allocation failed");
|
|
return NULL;
|
|
}
|
|
*tranche = (struct wlr_linux_dmabuf_feedback_v1_tranche){0};
|
|
return tranche;
|
|
}
|
|
|
|
void wlr_linux_dmabuf_feedback_v1_finish(struct wlr_linux_dmabuf_feedback_v1 *feedback) {
|
|
struct wlr_linux_dmabuf_feedback_v1_tranche *tranche;
|
|
wl_array_for_each(tranche, &feedback->tranches) {
|
|
wlr_drm_format_set_finish(&tranche->formats);
|
|
}
|
|
wl_array_release(&feedback->tranches);
|
|
}
|
|
|
|
static bool devid_from_fd(int fd, dev_t *devid) {
|
|
struct stat stat;
|
|
if (fstat(fd, &stat) != 0) {
|
|
wlr_log_errno(WLR_ERROR, "fstat failed");
|
|
return false;
|
|
}
|
|
*devid = stat.st_rdev;
|
|
return true;
|
|
}
|
|
|
|
static bool is_secondary_drm_backend(struct wlr_backend *backend) {
|
|
#if WLR_HAS_DRM_BACKEND
|
|
return wlr_backend_is_drm(backend) &&
|
|
wlr_drm_backend_get_parent(backend) != NULL;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
bool wlr_linux_dmabuf_feedback_v1_init_with_options(struct wlr_linux_dmabuf_feedback_v1 *feedback,
|
|
const struct wlr_linux_dmabuf_feedback_v1_init_options *options) {
|
|
assert(options->main_renderer != NULL);
|
|
assert(options->scanout_primary_output == NULL ||
|
|
options->output_layer_feedback_event == NULL);
|
|
|
|
*feedback = (struct wlr_linux_dmabuf_feedback_v1){0};
|
|
|
|
int renderer_drm_fd = wlr_renderer_get_drm_fd(options->main_renderer);
|
|
if (renderer_drm_fd < 0) {
|
|
wlr_log(WLR_ERROR, "Failed to get renderer DRM FD");
|
|
goto error;
|
|
}
|
|
dev_t renderer_dev;
|
|
if (!devid_from_fd(renderer_drm_fd, &renderer_dev)) {
|
|
goto error;
|
|
}
|
|
|
|
feedback->main_device = renderer_dev;
|
|
|
|
const struct wlr_drm_format_set *renderer_formats =
|
|
wlr_renderer_get_dmabuf_texture_formats(options->main_renderer);
|
|
if (renderer_formats == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to get renderer DMA-BUF texture formats");
|
|
goto error;
|
|
}
|
|
|
|
if (options->output_layer_feedback_event != NULL) {
|
|
const struct wlr_output_layer_feedback_event *event = options->output_layer_feedback_event;
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_tranche *tranche =
|
|
wlr_linux_dmabuf_feedback_add_tranche(feedback);
|
|
if (tranche == NULL) {
|
|
goto error;
|
|
}
|
|
|
|
tranche->target_device = event->target_device;
|
|
tranche->flags = ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT;
|
|
if (!wlr_drm_format_set_intersect(&tranche->formats, event->formats, renderer_formats)) {
|
|
wlr_log(WLR_ERROR, "Failed to intersect renderer and scanout formats");
|
|
goto error;
|
|
}
|
|
} else if (options->scanout_primary_output != NULL &&
|
|
!is_secondary_drm_backend(options->scanout_primary_output->backend)) {
|
|
int backend_drm_fd = wlr_backend_get_drm_fd(options->scanout_primary_output->backend);
|
|
if (backend_drm_fd < 0) {
|
|
wlr_log(WLR_ERROR, "Failed to get backend DRM FD");
|
|
goto error;
|
|
}
|
|
dev_t backend_dev;
|
|
if (!devid_from_fd(backend_drm_fd, &backend_dev)) {
|
|
goto error;
|
|
}
|
|
|
|
const struct wlr_drm_format_set *scanout_formats =
|
|
wlr_output_get_primary_formats(options->scanout_primary_output, WLR_BUFFER_CAP_DMABUF);
|
|
if (scanout_formats == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to get output primary DMA-BUF formats");
|
|
goto error;
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_tranche *tranche =
|
|
wlr_linux_dmabuf_feedback_add_tranche(feedback);
|
|
if (tranche == NULL) {
|
|
goto error;
|
|
}
|
|
|
|
tranche->target_device = backend_dev;
|
|
tranche->flags = ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT;
|
|
if (!wlr_drm_format_set_intersect(&tranche->formats, scanout_formats, renderer_formats)) {
|
|
wlr_log(WLR_ERROR, "Failed to intersect renderer and scanout formats");
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
struct wlr_linux_dmabuf_feedback_v1_tranche *tranche =
|
|
wlr_linux_dmabuf_feedback_add_tranche(feedback);
|
|
if (tranche == NULL) {
|
|
goto error;
|
|
}
|
|
|
|
tranche->target_device = renderer_dev;
|
|
if (!wlr_drm_format_set_copy(&tranche->formats, renderer_formats)) {
|
|
goto error;
|
|
}
|
|
|
|
return true;
|
|
|
|
error:
|
|
wlr_linux_dmabuf_feedback_v1_finish(feedback);
|
|
return false;
|
|
}
|