Tested with
./weston-simple-dmabuf-drm
./weston-simple-dmabuf-drm --import-immediate=1
./weston-simple-dmabuf-drm --y-inverted=1
(and combinations)
Supports only single plane XRGB dmabufs for now.
master
Guido Günther
8 years ago
parent
2d0db16942
commit
14cdb6153f
@ -0,0 +1,84 @@
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#ifndef WLR_TYPES_WLR_LINUX_DMABUF_H
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#define WLR_TYPES_WLR_LINUX_DMABUF_H
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#define WLR_LINUX_DMABUF_MAX_PLANES 4
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#include <stdint.h>
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#include <wayland-server-protocol.h>
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/* So we don't have to pull in linux specific drm headers */
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#ifndef DRM_FORMAT_MOD_INVALID
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#define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
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#endif
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struct wlr_dmabuf_buffer_attribs {
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/* set via params_add */
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int n_planes;
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uint32_t offset[WLR_LINUX_DMABUF_MAX_PLANES];
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uint32_t stride[WLR_LINUX_DMABUF_MAX_PLANES];
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uint64_t modifier[WLR_LINUX_DMABUF_MAX_PLANES];
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int fd[WLR_LINUX_DMABUF_MAX_PLANES];
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/* set via params_create */
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int32_t width;
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int32_t height;
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uint32_t format;
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uint32_t flags; /* enum zlinux_buffer_params_flags */
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};
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struct wlr_dmabuf_buffer {
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struct wlr_egl *egl;
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struct wl_resource *buffer_resource;
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struct wl_resource *params_resource;
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struct wlr_dmabuf_buffer_attribs attributes;
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};
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/**
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* Returns true if the given resource was created via the linux-dmabuf
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* buffer protocol, false otherwise
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*/
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bool wlr_dmabuf_resource_is_buffer(struct wl_resource *buffer_resource);
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/**
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* Returns the wlr_dmabuf_buffer if the given resource was created
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* via the linux-dmabuf buffer protocol
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*/
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struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_buffer_resource(
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struct wl_resource *buffer_resource);
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/**
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* Returns the wlr_dmabuf_buffer if the given resource was created
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* via the linux-dmabuf params protocol
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*/
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struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_params_resource(
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struct wl_resource *params_resource);
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/**
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* Returns true if the given dmabuf has y-axis inverted, false otherwise
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*/
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bool wlr_dmabuf_buffer_has_inverted_y(struct wlr_dmabuf_buffer *dmabuf);
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/* the protocol interface */
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struct wlr_linux_dmabuf {
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struct wl_global *wl_global;
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struct wl_listener display_destroy;
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struct wlr_egl *egl;
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};
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/**
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* Create linux-dmabuf interface
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*/
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struct wlr_linux_dmabuf *wlr_linux_dmabuf_create(struct wl_display *display,
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struct wlr_egl *egl);
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/**
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* Destroy the linux-dmabuf interface
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*/
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void wlr_linux_dmabuf_destroy(struct wlr_linux_dmabuf *linux_dmabuf);
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/**
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* Returns the wlr_linux_dmabuf if the given resource was created
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* via the linux_dmabuf protocol
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*/
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struct wlr_linux_dmabuf *wlr_linux_dmabuf_from_resource(
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struct wl_resource *resource);
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#endif
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@ -0,0 +1,464 @@
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#ifndef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 200809L
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#endif
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#include <assert.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wayland-server.h>
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#include <wlr/render.h>
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#include <wlr/render/egl.h>
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#include <wlr/types/wlr_linux_dmabuf.h>
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#include <wlr/util/log.h>
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#include "linux-dmabuf-unstable-v1-protocol.h"
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static void wl_buffer_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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wl_buffer_destroy,
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};
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bool wlr_dmabuf_buffer_has_inverted_y(struct wlr_dmabuf_buffer *dmabuf) {
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return dmabuf->attributes.flags
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& ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
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}
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bool wlr_dmabuf_resource_is_buffer(struct wl_resource *buffer_resource) {
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if (!wl_resource_instance_of(buffer_resource, &wl_buffer_interface,
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&wl_buffer_impl)) {
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return false;
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}
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struct wlr_dmabuf_buffer *buffer = wl_resource_get_user_data(buffer_resource);
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if (buffer && buffer->buffer_resource && !buffer->params_resource &&
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buffer->buffer_resource == buffer_resource) {
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return true;
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}
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return false;
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}
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struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_buffer_resource(
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struct wl_resource *buffer_resource) {
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assert(wl_resource_instance_of(buffer_resource, &wl_buffer_interface,
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&wl_buffer_impl));
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struct wlr_dmabuf_buffer *buffer = wl_resource_get_user_data(buffer_resource);
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assert(buffer);
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assert(buffer->buffer_resource);
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assert(!buffer->params_resource);
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assert(buffer->buffer_resource == buffer_resource);
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return buffer;
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}
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static void linux_dmabuf_buffer_destroy(struct wlr_dmabuf_buffer *buffer) {
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for (int i = 0; i < buffer->attributes.n_planes; i++) {
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close(buffer->attributes.fd[i]);
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buffer->attributes.fd[i] = -1;
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}
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buffer->attributes.n_planes = 0;
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free(buffer);
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}
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static void params_destroy(struct wl_client *client, 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 name_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_dmabuf_buffer *buffer = wlr_dmabuf_buffer_from_params_resource(
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params_resource);
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if (!buffer) {
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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(name_fd);
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return;
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}
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if (plane_idx >= WLR_LINUX_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_LINUX_DMABUF_MAX_PLANES);
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close(name_fd);
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return;
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}
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if (buffer->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 id %d has already been added for plane %u",
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buffer->attributes.fd[plane_idx],
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plane_idx);
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close(name_fd);
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return;
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}
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buffer->attributes.fd[plane_idx] = name_fd;
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buffer->attributes.offset[plane_idx] = offset;
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buffer->attributes.stride[plane_idx] = stride;
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buffer->attributes.modifier[plane_idx] = ((uint64_t)modifier_hi << 32) |
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modifier_lo;
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buffer->attributes.n_planes++;
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}
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static void handle_buffer_destroy(struct wl_resource *buffer_resource)
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{
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struct wlr_dmabuf_buffer *buffer = wlr_dmabuf_buffer_from_buffer_resource(
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buffer_resource);
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linux_dmabuf_buffer_destroy(buffer);
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}
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static void params_create_common(struct wl_client *client,
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struct wl_resource *params_resource, uint32_t buffer_id, int32_t width,
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int32_t height, uint32_t format, uint32_t flags) {
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if (!wl_resource_get_user_data(params_resource)) {
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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_buffer *buffer = wlr_dmabuf_buffer_from_params_resource(
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params_resource);
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/* Switch the linux_dmabuf_buffer object from params resource to
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* eventually wl_buffer resource. */
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wl_resource_set_user_data(buffer->params_resource, NULL);
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buffer->params_resource = NULL;
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if (!buffer->attributes.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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/* TODO: support more planes */
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if (buffer->attributes.n_planes != 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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"only single plane buffers supported not %d",
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buffer->attributes.n_planes);
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goto err_out;
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}
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if (buffer->attributes.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");
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goto err_out;
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}
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buffer->attributes.width = width;
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buffer->attributes.height = height;
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buffer->attributes.format = format;
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buffer->attributes.flags = flags;
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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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if ((uint64_t)buffer->attributes.offset[0] + buffer->attributes.stride[0] > 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");
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goto err_out;
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}
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if ((uint64_t)buffer->attributes.offset[0] +
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(uint64_t) buffer->attributes.stride[0] * 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");
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goto err_out;
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}
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off_t size = lseek(buffer->attributes.fd[0], 0, SEEK_END);
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if (size != -1) { /* Skip checks if kernel does no support seek on buffer */
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if (buffer->attributes.offset[0] >= 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 %i for plane",
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buffer->attributes.offset[0]);
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goto err_out;
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}
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if (buffer->attributes.offset[0] + buffer->attributes.stride[0] > 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 stride %i for plane",
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buffer->attributes.stride[0]);
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goto err_out;
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}
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if (buffer->attributes.offset[0] + buffer->attributes.stride[0] * 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");
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goto err_out;
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}
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}
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/* reject unknown flags */
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if (buffer->attributes.flags & ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT) {
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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, buffer->attributes.flags);
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goto err_out;
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}
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/* Check if dmabuf is usable */
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if (!wlr_egl_check_import_dmabuf(buffer->egl, buffer)) {
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goto err_failed;
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}
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buffer->buffer_resource = wl_resource_create(client, &wl_buffer_interface,
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1, buffer_id);
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if (!buffer->buffer_resource) {
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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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wl_resource_set_implementation(buffer->buffer_resource,
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&wl_buffer_impl, buffer, handle_buffer_destroy);
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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->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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linux_dmabuf_buffer_destroy(buffer);
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return;
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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(client, params_resource, 0, width, height, format, flags);
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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(client, params_resource, buffer_id, width, height, format, flags);
|
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}
|
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|
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static const struct zwp_linux_buffer_params_v1_interface linux_buffer_params_impl = {
|
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params_destroy,
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params_add,
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params_create,
|
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params_create_immed,
|
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};
|
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|
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struct wlr_dmabuf_buffer *wlr_dmabuf_buffer_from_params_resource(
|
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struct wl_resource *params_resource) {
|
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assert(wl_resource_instance_of(params_resource,
|
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&zwp_linux_buffer_params_v1_interface,
|
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&linux_buffer_params_impl));
|
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struct wlr_dmabuf_buffer *buffer = wl_resource_get_user_data(params_resource);
|
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assert(buffer);
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assert(buffer->params_resource);
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assert(!buffer->buffer_resource);
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assert(buffer->params_resource == params_resource);
|
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|
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return buffer;
|
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}
|
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|
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static void handle_params_destroy(struct wl_resource *params_resource) {
|
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/* Check for NULL since wlr_dmabuf_buffer_from_params_resource will choke */
|
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if (!wl_resource_get_user_data(params_resource)) {
|
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return;
|
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}
|
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|
||||
struct wlr_dmabuf_buffer *buffer =
|
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wlr_dmabuf_buffer_from_params_resource(params_resource);
|
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linux_dmabuf_buffer_destroy(buffer);
|
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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 *linux_dmabuf = wlr_linux_dmabuf_from_resource(
|
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linux_dmabuf_resource);
|
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|
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uint32_t version = wl_resource_get_version(linux_dmabuf_resource);
|
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struct wlr_dmabuf_buffer *buffer = calloc(1, sizeof *buffer);
|
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if (!buffer) {
|
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goto err;
|
||||
}
|
||||
|
||||
for (int i = 0; i < WLR_LINUX_DMABUF_MAX_PLANES; i++) {
|
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buffer->attributes.fd[i] = -1;
|
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}
|
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|
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buffer->egl = linux_dmabuf->egl;
|
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buffer->params_resource = wl_resource_create(client,
|
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&zwp_linux_buffer_params_v1_interface,
|
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version, params_id);
|
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if (!buffer->params_resource) {
|
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goto err_free;
|
||||
}
|
||||
|
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wl_resource_set_implementation(buffer->params_resource,
|
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&linux_buffer_params_impl,buffer, handle_params_destroy);
|
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return;
|
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|
||||
err_free:
|
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free(buffer);
|
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err:
|
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wl_resource_post_no_memory(linux_dmabuf_resource);
|
||||
}
|
||||
|
||||
static void linux_dmabuf_destroy(struct wl_client *client, struct wl_resource *resource) {
|
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wl_resource_destroy(resource);
|
||||
}
|
||||
|
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static const struct zwp_linux_dmabuf_v1_interface linux_dmabuf_impl = {
|
||||
linux_dmabuf_destroy,
|
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linux_dmabuf_create_params
|
||||
};
|
||||
|
||||
struct wlr_linux_dmabuf *wlr_linux_dmabuf_from_resource(
|
||||
struct wl_resource *resource) {
|
||||
assert(wl_resource_instance_of(resource, &zwp_linux_dmabuf_v1_interface,
|
||||
&linux_dmabuf_impl));
|
||||
|
||||
struct wlr_linux_dmabuf *dmabuf = wl_resource_get_user_data(resource);
|
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assert(dmabuf);
|
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return dmabuf;
|
||||
}
|
||||
|
||||
static void linux_dmabuf_send_modifiers(struct wlr_linux_dmabuf *linux_dmabuf,
|
||||
struct wl_resource *resource) {
|
||||
struct wlr_egl *egl = linux_dmabuf->egl;
|
||||
/*
|
||||
* Use EGL_EXT_image_dma_buf_import_modifiers to query and advertise
|
||||
* format/modifier codes.
|
||||
*/
|
||||
uint64_t modifier_invalid = DRM_FORMAT_MOD_INVALID;
|
||||
int *formats = NULL;
|
||||
int num_formats = wlr_egl_get_dmabuf_formats(egl, &formats);
|
||||
|
||||
if (num_formats < 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
for (int i = 0; i < num_formats; i++) {
|
||||
int num_modifiers;
|
||||
uint64_t *modifiers = NULL;
|
||||
|
||||
num_modifiers = wlr_egl_get_dmabuf_modifiers(egl, formats[i],
|
||||
&modifiers);
|
||||
if (num_modifiers < 0) {
|
||||
return;
|
||||
}
|
||||
/* send DRM_FORMAT_MOD_INVALID token when no modifiers are supported
|
||||
* for this format */
|
||||
if (num_modifiers == 0) {
|
||||
num_modifiers = 1;
|
||||
modifiers = &modifier_invalid;
|
||||
}
|
||||
for (int j = 0; j < num_modifiers; j++) {
|
||||
uint32_t modifier_lo = modifiers[j] & 0xFFFFFFFF;
|
||||
uint32_t modifier_hi = modifiers[j] >> 32;
|
||||
zwp_linux_dmabuf_v1_send_modifier(resource, formats[i],
|
||||
modifier_hi,
|
||||
modifier_lo);
|
||||
}
|
||||
if (modifiers != &modifier_invalid) {
|
||||
free(modifiers);
|
||||
}
|
||||
}
|
||||
free(formats);
|
||||
}
|
||||
|
||||
static void linux_dmabuf_bind(struct wl_client *client,
|
||||
void *data, uint32_t version, uint32_t id) {
|
||||
struct wlr_linux_dmabuf *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_MODIFIER_SINCE_VERSION) {
|
||||
return;
|
||||
}
|
||||
|
||||
linux_dmabuf_send_modifiers(linux_dmabuf, resource);
|
||||
}
|
||||
|
||||
void wlr_linux_dmabuf_destroy(struct wlr_linux_dmabuf *linux_dmabuf) {
|
||||
if (!linux_dmabuf) {
|
||||
return;
|
||||
}
|
||||
wl_list_remove(&linux_dmabuf->display_destroy.link);
|
||||
|
||||
wl_global_destroy(linux_dmabuf->wl_global);
|
||||
free(linux_dmabuf);
|
||||
}
|
||||
|
||||
static void handle_display_destroy(struct wl_listener *listener, void *data) {
|
||||
struct wlr_linux_dmabuf *linux_dmabuf = wl_container_of(listener, linux_dmabuf, display_destroy);
|
||||
wlr_linux_dmabuf_destroy(linux_dmabuf);
|
||||
}
|
||||
|
||||
struct wlr_linux_dmabuf *wlr_linux_dmabuf_create(struct wl_display *display,
|
||||
struct wlr_egl *egl) {
|
||||
struct wlr_linux_dmabuf *linux_dmabuf =
|
||||
calloc(1, sizeof(struct wlr_linux_dmabuf));
|
||||
if (linux_dmabuf == NULL) {
|
||||
wlr_log(L_ERROR, "could not create simple dmabuf manager");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
linux_dmabuf->display_destroy.notify = handle_display_destroy;
|
||||
wl_display_add_destroy_listener(display, &linux_dmabuf->display_destroy);
|
||||
|
||||
linux_dmabuf->wl_global =
|
||||
wl_global_create(display, &zwp_linux_dmabuf_v1_interface,
|
||||
3, linux_dmabuf, linux_dmabuf_bind);
|
||||
|
||||
linux_dmabuf->egl = egl;
|
||||
if (!linux_dmabuf->wl_global) {
|
||||
wlr_log(L_ERROR, "could not create linux dmabuf v1 wl global");
|
||||
free(linux_dmabuf);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return linux_dmabuf;
|
||||
}
|
||||
Loading…
Reference in new issue