mirror of
https://gitlab.freedesktop.org/wayland/weston
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![Robert Mader](/assets/img/avatar_default.png)
Unconditionally creating a surface feedback for each surface creates unnecessary overhead and noise in the logs. Thus create it when the first surface feedback resource for a surface is requested and delete it again once all those resources have been destroyed. Signed-off-by: Robert Mader <robert.mader@collabora.com>
1132 lines
33 KiB
C
1132 lines
33 KiB
C
/*
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* Copyright © 2014, 2015 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <assert.h>
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#include <errno.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <libweston/libweston.h>
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#include "linux-dmabuf.h"
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#include "shared/os-compatibility.h"
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#include "libweston-internal.h"
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#include "shared/weston-drm-fourcc.h"
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static void
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linux_dmabuf_buffer_destroy(struct linux_dmabuf_buffer *buffer)
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{
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int i;
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for (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
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destroy_params(struct wl_resource *params_resource)
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{
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struct linux_dmabuf_buffer *buffer;
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buffer = wl_resource_get_user_data(params_resource);
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if (!buffer)
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return;
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linux_dmabuf_buffer_destroy(buffer);
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}
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static void
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params_destroy(struct wl_client *client, struct wl_resource *resource)
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{
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wl_resource_destroy(resource);
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}
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static void
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params_add(struct wl_client *client,
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struct wl_resource *params_resource,
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int32_t name_fd,
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uint32_t plane_idx,
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uint32_t offset,
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uint32_t stride,
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uint32_t modifier_hi,
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uint32_t modifier_lo)
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{
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struct linux_dmabuf_buffer *buffer;
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buffer = wl_resource_get_user_data(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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assert(buffer->params_resource == params_resource);
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assert(!buffer->buffer_resource);
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if (plane_idx >= MAX_DMABUF_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 is too high", plane_idx);
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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 has already been added for plane %u",
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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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if (wl_resource_get_version(params_resource) < ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION)
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buffer->attributes.modifier[plane_idx] = DRM_FORMAT_MOD_INVALID;
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else
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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
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linux_dmabuf_wl_buffer_destroy(struct wl_client *client,
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struct wl_resource *resource)
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{
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wl_resource_destroy(resource);
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}
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static const struct wl_buffer_interface linux_dmabuf_buffer_implementation = {
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linux_dmabuf_wl_buffer_destroy
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};
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static void
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destroy_linux_dmabuf_wl_buffer(struct wl_resource *resource)
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{
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struct linux_dmabuf_buffer *buffer;
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buffer = wl_resource_get_user_data(resource);
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assert(buffer->buffer_resource == resource);
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assert(!buffer->params_resource);
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if (buffer->user_data_destroy_func)
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buffer->user_data_destroy_func(buffer);
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linux_dmabuf_buffer_destroy(buffer);
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}
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static void
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params_create_common(struct wl_client *client,
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struct wl_resource *params_resource,
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uint32_t buffer_id,
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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)
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{
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struct linux_dmabuf_buffer *buffer;
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int i;
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buffer = wl_resource_get_user_data(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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return;
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}
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assert(buffer->params_resource == params_resource);
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assert(!buffer->buffer_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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*/
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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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/* Check for holes in the dmabufs set (e.g. [0, 1, 3]) */
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for (i = 0; i < buffer->attributes.n_planes; i++) {
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if (buffer->attributes.fd[i] == -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 %i", i);
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goto err_out;
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}
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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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for (i = 0; i < buffer->attributes.n_planes; i++) {
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off_t size;
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if ((uint64_t) buffer->attributes.offset[i] + buffer->attributes.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 %i", i);
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goto err_out;
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}
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if (i == 0 &&
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(uint64_t) buffer->attributes.offset[i] +
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(uint64_t) buffer->attributes.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 %i", i);
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goto err_out;
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}
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/* Don't report an error as it might be caused
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* by the kernel not supporting seeking on dmabuf */
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size = lseek(buffer->attributes.fd[i], 0, SEEK_END);
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if (size == -1)
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continue;
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if (buffer->attributes.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 %i for plane %i",
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buffer->attributes.offset[i], i);
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goto err_out;
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}
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if (buffer->attributes.offset[i] + buffer->attributes.stride[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 stride %i for plane %i",
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buffer->attributes.stride[i], i);
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goto err_out;
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}
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/* Only valid for first plane as other planes might be
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* sub-sampled according to fourcc format */
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if (i == 0 &&
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buffer->attributes.offset[i] + buffer->attributes.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 %i", i);
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goto err_out;
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}
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}
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if (buffer->direct_display) {
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if (!weston_compositor_dmabuf_can_scanout(buffer->compositor,
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buffer))
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goto err_failed;
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goto avoid_gpu_import;
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}
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if (!weston_compositor_import_dmabuf(buffer->compositor, buffer))
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goto err_failed;
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avoid_gpu_import:
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buffer->buffer_resource = wl_resource_create(client,
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&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_buffer;
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}
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wl_resource_set_implementation(buffer->buffer_resource,
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&linux_dmabuf_buffer_implementation,
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buffer, destroy_linux_dmabuf_wl_buffer);
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/* send 'created' event when the request is not for an immediate
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* import, ie 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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return;
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err_buffer:
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if (buffer->user_data_destroy_func)
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buffer->user_data_destroy_func(buffer);
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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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err_out:
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linux_dmabuf_buffer_destroy(buffer);
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}
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static void
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params_create(struct wl_client *client,
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struct wl_resource *params_resource,
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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)
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{
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params_create_common(client, params_resource, 0, width, height, format,
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flags);
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}
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static void
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params_create_immed(struct wl_client *client,
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struct wl_resource *params_resource,
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uint32_t buffer_id,
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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)
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{
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params_create_common(client, 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
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zwp_linux_buffer_params_implementation = {
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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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static void
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linux_dmabuf_destroy(struct wl_client *client, struct wl_resource *resource)
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{
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wl_resource_destroy(resource);
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}
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static void
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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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{
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struct weston_compositor *compositor;
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struct linux_dmabuf_buffer *buffer;
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uint32_t version;
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int i;
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version = wl_resource_get_version(linux_dmabuf_resource);
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compositor = wl_resource_get_user_data(linux_dmabuf_resource);
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buffer = zalloc(sizeof *buffer);
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if (!buffer)
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goto err_out;
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for (i = 0; i < MAX_DMABUF_PLANES; i++)
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buffer->attributes.fd[i] = -1;
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buffer->compositor = compositor;
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buffer->params_resource =
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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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buffer->direct_display = false;
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if (!buffer->params_resource)
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goto err_dealloc;
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wl_resource_set_implementation(buffer->params_resource,
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&zwp_linux_buffer_params_implementation,
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buffer, destroy_params);
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return;
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err_dealloc:
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free(buffer);
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err_out:
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wl_resource_post_no_memory(linux_dmabuf_resource);
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}
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/** Creates dma-buf feedback tranche
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*
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* The tranche is added to dma-buf feedback's tranche list
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*
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* @param dmabuf_feedback The dma-buf feedback object to which the tranche is added
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* @param format_table The dma-buf feedback formats table
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* @param target_device The target device of the new tranche
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* @param flags The flags of the new tranche
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* @param preference The preference of the new tranche
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* @return The tranche created, or NULL on failure
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*/
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WL_EXPORT struct weston_dmabuf_feedback_tranche *
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weston_dmabuf_feedback_tranche_create(struct weston_dmabuf_feedback *dmabuf_feedback,
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struct weston_dmabuf_feedback_format_table *format_table,
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dev_t target_device, uint32_t flags,
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enum weston_dmabuf_feedback_tranche_preference preference)
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{
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struct weston_dmabuf_feedback_tranche *tranche, *ptr;
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struct wl_list *pos;
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|
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tranche = zalloc(sizeof(*tranche));
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if (!tranche) {
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weston_log("%s: out of memory\n", __func__);
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return NULL;
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}
|
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|
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tranche->active = true;
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tranche->target_device = target_device;
|
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tranche->flags = flags;
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tranche->preference = preference;
|
|
|
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/* Get the formats indices array */
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if (flags == 0) {
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if (wl_array_copy(&tranche->formats_indices,
|
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&format_table->renderer_formats_indices) < 0) {
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weston_log("%s: out of memory\n", __func__);
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goto err;
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}
|
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} else if (flags & ZWP_LINUX_DMABUF_FEEDBACK_V1_TRANCHE_FLAGS_SCANOUT) {
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if (wl_array_copy(&tranche->formats_indices,
|
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&format_table->scanout_formats_indices) < 0) {
|
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weston_log("%s: out of memory\n", __func__);
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goto err;
|
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}
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} else {
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weston_log("error: for now we just have renderer and scanout "
|
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"tranches, can't create other type of tranche\n");
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goto err;
|
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}
|
|
|
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/* The list of tranches is ordered by preference.
|
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* Highest preference comes first. */
|
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pos = &dmabuf_feedback->tranche_list;
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wl_list_for_each(ptr, &dmabuf_feedback->tranche_list, link) {
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pos = &ptr->link;
|
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if (ptr->preference <= tranche->preference)
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break;
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}
|
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wl_list_insert(pos->prev, &tranche->link);
|
|
|
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return tranche;
|
|
|
|
err:
|
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free(tranche);
|
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return NULL;
|
|
}
|
|
|
|
static void
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weston_dmabuf_feedback_tranche_destroy(struct weston_dmabuf_feedback_tranche *tranche)
|
|
{
|
|
wl_array_release(&tranche->formats_indices);
|
|
wl_list_remove(&tranche->link);
|
|
free(tranche);
|
|
}
|
|
|
|
static int
|
|
format_table_add_renderer_formats(struct weston_dmabuf_feedback_format_table *format_table,
|
|
const struct weston_drm_format_array *renderer_formats)
|
|
{
|
|
struct weston_drm_format *fmt;
|
|
unsigned int num_modifiers;
|
|
const uint64_t *modifiers;
|
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uint16_t index, *index_ptr;
|
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unsigned int size;
|
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unsigned int i;
|
|
|
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size = sizeof(index) *
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weston_drm_format_array_count_pairs(renderer_formats);
|
|
|
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if (!wl_array_add(&format_table->renderer_formats_indices, size)) {
|
|
weston_log("%s: out of memory\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
index = 0;
|
|
wl_array_for_each(fmt, &renderer_formats->arr) {
|
|
modifiers = weston_drm_format_get_modifiers(fmt, &num_modifiers);
|
|
for (i = 0; i < num_modifiers; i++) {
|
|
format_table->data[index].format = fmt->format;
|
|
format_table->data[index].modifier = modifiers[i];
|
|
index++;
|
|
}
|
|
}
|
|
|
|
index = 0;
|
|
wl_array_for_each(index_ptr, &format_table->renderer_formats_indices)
|
|
*index_ptr = index++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Creates dma-buf feedback format table
|
|
*
|
|
* @param renderer_formats The formats that compose the table
|
|
* @return The dma-buf feedback format table, or NULL on failure
|
|
*/
|
|
WL_EXPORT struct weston_dmabuf_feedback_format_table *
|
|
weston_dmabuf_feedback_format_table_create(const struct weston_drm_format_array *renderer_formats)
|
|
{
|
|
struct weston_dmabuf_feedback_format_table *format_table;
|
|
int ret;
|
|
|
|
format_table = zalloc(sizeof(*format_table));
|
|
if (!format_table) {
|
|
weston_log("%s: out of memory\n", __func__);
|
|
return NULL;
|
|
}
|
|
wl_array_init(&format_table->renderer_formats_indices);
|
|
wl_array_init(&format_table->scanout_formats_indices);
|
|
|
|
/* Creates formats file table and mmap it */
|
|
format_table->size = weston_drm_format_array_count_pairs(renderer_formats) *
|
|
sizeof(*format_table->data);
|
|
format_table->fd = os_create_anonymous_file(format_table->size);
|
|
if (format_table->fd < 0) {
|
|
weston_log("error: failed to create format table file: %s\n",
|
|
strerror(errno));
|
|
goto err_fd;
|
|
}
|
|
format_table->data = mmap(NULL, format_table->size, PROT_READ | PROT_WRITE,
|
|
MAP_SHARED, format_table->fd, 0);
|
|
if (format_table->data == MAP_FAILED) {
|
|
weston_log("error: mmap for format table failed: %s\n",
|
|
strerror(errno));
|
|
goto err_mmap;
|
|
}
|
|
|
|
/* Add renderer formats to file table */
|
|
ret = format_table_add_renderer_formats(format_table, renderer_formats);
|
|
if (ret < 0)
|
|
goto err_formats;
|
|
|
|
return format_table;
|
|
|
|
err_formats:
|
|
munmap(format_table->data, format_table->size);
|
|
err_mmap:
|
|
close(format_table->fd);
|
|
err_fd:
|
|
wl_array_release(&format_table->renderer_formats_indices);
|
|
free(format_table);
|
|
return NULL;
|
|
}
|
|
|
|
/** Destroys dma-buf feedback formats table
|
|
*
|
|
* @param format_table The dma-buf feedback format table to destroy
|
|
*/
|
|
WL_EXPORT void
|
|
weston_dmabuf_feedback_format_table_destroy(struct weston_dmabuf_feedback_format_table *format_table)
|
|
{
|
|
wl_array_release(&format_table->renderer_formats_indices);
|
|
wl_array_release(&format_table->scanout_formats_indices);
|
|
|
|
munmap(format_table->data, format_table->size);
|
|
close(format_table->fd);
|
|
|
|
free(format_table);
|
|
}
|
|
|
|
static int
|
|
format_table_get_format_index(struct weston_dmabuf_feedback_format_table *format_table,
|
|
uint32_t format, uint64_t modifier, uint16_t *index_out)
|
|
{
|
|
uint16_t index;
|
|
unsigned int num_elements = format_table->size / sizeof(index);
|
|
|
|
for (index = 0; index < num_elements; index++) {
|
|
if (format_table->data[index].format == format &&
|
|
format_table->data[index].modifier == modifier) {
|
|
*index_out = index;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/** Set scanout formats indices in the dma-buf feedback format table
|
|
*
|
|
* The table consists of the formats supported by the renderer. A dma-buf
|
|
* feedback scanout tranche consists of the union of the KMS plane's formats
|
|
* intersected with the renderer formats. With this function we compute the
|
|
* indices of these plane's formats in the table and save them in the
|
|
* table->scanout_formats_indices, allowing us to create scanout tranches.
|
|
*
|
|
* @param format_table The dma-buf feedback format table
|
|
* @param scanout_formats The scanout formats
|
|
* @return 0 on success, -1 on failure
|
|
*/
|
|
WL_EXPORT int
|
|
weston_dmabuf_feedback_format_table_set_scanout_indices(struct weston_dmabuf_feedback_format_table *format_table,
|
|
const struct weston_drm_format_array *scanout_formats)
|
|
{
|
|
struct weston_drm_format *fmt;
|
|
unsigned int num_modifiers;
|
|
const uint64_t *modifiers;
|
|
uint16_t index, *index_ptr;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
wl_array_for_each(fmt, &scanout_formats->arr) {
|
|
modifiers = weston_drm_format_get_modifiers(fmt, &num_modifiers);
|
|
for (i = 0; i < num_modifiers; i++) {
|
|
index_ptr =
|
|
wl_array_add(&format_table->scanout_formats_indices,
|
|
sizeof(index));
|
|
if (!index_ptr)
|
|
goto err;
|
|
|
|
ret = format_table_get_format_index(format_table, fmt->format,
|
|
modifiers[i], &index);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
*index_ptr = index;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
wl_array_release(&format_table->scanout_formats_indices);
|
|
wl_array_init(&format_table->scanout_formats_indices);
|
|
return -1;
|
|
}
|
|
|
|
/** Creates dma-buf feedback object
|
|
*
|
|
* @param main_device The main device of the dma-buf feedback
|
|
* @return The dma-buf feedback object created, or NULL on failure
|
|
*/
|
|
WL_EXPORT struct weston_dmabuf_feedback *
|
|
weston_dmabuf_feedback_create(dev_t main_device)
|
|
{
|
|
struct weston_dmabuf_feedback *dmabuf_feedback;
|
|
|
|
dmabuf_feedback = zalloc(sizeof(*dmabuf_feedback));
|
|
if (!dmabuf_feedback) {
|
|
weston_log("%s: out of memory\n", __func__);
|
|
return NULL;
|
|
}
|
|
|
|
dmabuf_feedback->main_device = main_device;
|
|
wl_list_init(&dmabuf_feedback->tranche_list);
|
|
wl_list_init(&dmabuf_feedback->resource_list);
|
|
|
|
return dmabuf_feedback;
|
|
}
|
|
|
|
/** Destroy dma-buf feedback object
|
|
*
|
|
* @param dmabuf_feedback The dma-buf feedback object to destroy
|
|
*/
|
|
WL_EXPORT void
|
|
weston_dmabuf_feedback_destroy(struct weston_dmabuf_feedback *dmabuf_feedback)
|
|
{
|
|
struct weston_dmabuf_feedback_tranche *tranche, *tranche_tmp;
|
|
struct wl_resource *res, *res_tmp;
|
|
|
|
wl_list_for_each_safe(tranche, tranche_tmp, &dmabuf_feedback->tranche_list, link)
|
|
weston_dmabuf_feedback_tranche_destroy(tranche);
|
|
|
|
wl_resource_for_each_safe(res, res_tmp, &dmabuf_feedback->resource_list) {
|
|
wl_list_remove(wl_resource_get_link(res));
|
|
wl_list_init(wl_resource_get_link(res));
|
|
wl_resource_set_user_data(res, NULL);
|
|
}
|
|
|
|
free(dmabuf_feedback);
|
|
}
|
|
|
|
/** Find tranche in a dma-buf feedback object
|
|
*
|
|
* @param dmabuf_feedback The dma-buf feedback object where to look for
|
|
* @param target_device The target device of the tranche
|
|
* @param flags The flags of the tranche
|
|
* @param preference The preference of the tranche
|
|
* @return The tranche, or NULL if it was not found
|
|
*/
|
|
WL_EXPORT struct weston_dmabuf_feedback_tranche *
|
|
weston_dmabuf_feedback_find_tranche(struct weston_dmabuf_feedback *dmabuf_feedback,
|
|
dev_t target_device, uint32_t flags,
|
|
enum weston_dmabuf_feedback_tranche_preference preference)
|
|
{
|
|
struct weston_dmabuf_feedback_tranche *tranche;
|
|
|
|
wl_list_for_each(tranche, &dmabuf_feedback->tranche_list, link)
|
|
if (tranche->target_device == target_device &&
|
|
tranche->flags == flags && tranche->preference == preference)
|
|
return tranche;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
weston_dmabuf_feedback_send(struct weston_dmabuf_feedback *dmabuf_feedback,
|
|
struct weston_dmabuf_feedback_format_table *format_table,
|
|
struct wl_resource *res, bool advertise_format_table)
|
|
{
|
|
struct weston_dmabuf_feedback_tranche *tranche;
|
|
struct wl_array device;
|
|
dev_t *dev;
|
|
|
|
/* main_device and target_device events need a dev_t as parameter,
|
|
* but we can't use this directly to communicate with the Wayland
|
|
* client. The solution is to use a wl_array, which is supported by
|
|
* Wayland, and add the dev_t as an element of the array. */
|
|
wl_array_init(&device);
|
|
dev = wl_array_add(&device, sizeof(*dev));
|
|
if (!dev) {
|
|
wl_resource_post_no_memory(res);
|
|
return;
|
|
}
|
|
|
|
/* format_table event - In Weston, we never modify the dma-buf feedback
|
|
* format table. So we have this flag in order to advertise the format
|
|
* table only if the client has just subscribed to receive the events
|
|
* for this feedback object. When we need to re-send the feedback events
|
|
* for this client, the table event won't be sent. */
|
|
if (advertise_format_table)
|
|
zwp_linux_dmabuf_feedback_v1_send_format_table(res, format_table->fd,
|
|
format_table->size);
|
|
|
|
/* main_device event */
|
|
*dev = dmabuf_feedback->main_device;
|
|
zwp_linux_dmabuf_feedback_v1_send_main_device(res, &device);
|
|
|
|
/* send events for each tranche */
|
|
wl_list_for_each(tranche, &dmabuf_feedback->tranche_list, link) {
|
|
if (!tranche->active)
|
|
continue;
|
|
|
|
/* tranche_target_device event */
|
|
*dev = tranche->target_device;
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_target_device(res, &device);
|
|
|
|
/* tranche_flags event */
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_flags(res, tranche->flags);
|
|
|
|
/* tranche_formats event */
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_formats(res, &tranche->formats_indices);
|
|
|
|
/* tranche_done_event */
|
|
zwp_linux_dmabuf_feedback_v1_send_tranche_done(res);
|
|
}
|
|
|
|
/* compositor_done_event */
|
|
zwp_linux_dmabuf_feedback_v1_send_done(res);
|
|
|
|
wl_array_release(&device);
|
|
}
|
|
|
|
/** Sends the feedback events for a dma-buf feedback object
|
|
*
|
|
* Given a dma-buf feedback object, this will send events to clients that are
|
|
* subscribed to it. This is useful for the per-surface dma-buf feedback, which
|
|
* is dynamic and can change throughout compositor's life. These changes results
|
|
* in the need to resend the feedback events to clients.
|
|
*
|
|
* @param dmabuf_feedback The weston_dmabuf_feedback object
|
|
* @param format_table The dma-buf feedback formats table
|
|
*/
|
|
WL_EXPORT void
|
|
weston_dmabuf_feedback_send_all(struct weston_dmabuf_feedback *dmabuf_feedback,
|
|
struct weston_dmabuf_feedback_format_table *format_table)
|
|
{
|
|
struct wl_resource *res;
|
|
|
|
assert(!wl_list_empty(&dmabuf_feedback->resource_list));
|
|
wl_resource_for_each(res, &dmabuf_feedback->resource_list)
|
|
weston_dmabuf_feedback_send(dmabuf_feedback,
|
|
format_table, res, false);
|
|
}
|
|
|
|
static void
|
|
dmabuf_feedback_resource_destroy(struct wl_resource *resource)
|
|
{
|
|
struct weston_surface *surface =
|
|
wl_resource_get_user_data(resource);
|
|
|
|
wl_list_remove(wl_resource_get_link(resource));
|
|
|
|
if (surface &&
|
|
wl_list_empty(&surface->dmabuf_feedback->resource_list)) {
|
|
weston_dmabuf_feedback_destroy(surface->dmabuf_feedback);
|
|
surface->dmabuf_feedback = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dmabuf_feedback_destroy(struct wl_client *client, struct wl_resource *resource)
|
|
{
|
|
wl_resource_destroy(resource);
|
|
}
|
|
|
|
static const struct zwp_linux_dmabuf_feedback_v1_interface
|
|
zwp_linux_dmabuf_feedback_implementation = {
|
|
dmabuf_feedback_destroy
|
|
};
|
|
|
|
static struct wl_resource *
|
|
dmabuf_feedback_resource_create(struct wl_resource *dmabuf_resource,
|
|
struct wl_client *client, uint32_t dmabuf_feedback_id,
|
|
struct weston_surface *surface)
|
|
{
|
|
struct wl_resource *dmabuf_feedback_res;
|
|
uint32_t version;
|
|
|
|
version = wl_resource_get_version(dmabuf_resource);
|
|
|
|
dmabuf_feedback_res =
|
|
wl_resource_create(client, &zwp_linux_dmabuf_feedback_v1_interface,
|
|
version, dmabuf_feedback_id);
|
|
if (!dmabuf_feedback_res)
|
|
return NULL;
|
|
|
|
wl_list_init(wl_resource_get_link(dmabuf_feedback_res));
|
|
wl_resource_set_implementation(dmabuf_feedback_res,
|
|
&zwp_linux_dmabuf_feedback_implementation,
|
|
surface, dmabuf_feedback_resource_destroy);
|
|
|
|
return dmabuf_feedback_res;
|
|
}
|
|
|
|
static void
|
|
linux_dmabuf_get_default_feedback(struct wl_client *client,
|
|
struct wl_resource *dmabuf_resource,
|
|
uint32_t dmabuf_feedback_id)
|
|
{
|
|
struct weston_compositor *compositor =
|
|
wl_resource_get_user_data(dmabuf_resource);
|
|
struct wl_resource *dmabuf_feedback_resource;
|
|
|
|
dmabuf_feedback_resource =
|
|
dmabuf_feedback_resource_create(dmabuf_resource,
|
|
client, dmabuf_feedback_id,
|
|
NULL);
|
|
if (!dmabuf_feedback_resource) {
|
|
wl_resource_post_no_memory(dmabuf_resource);
|
|
return;
|
|
}
|
|
|
|
weston_dmabuf_feedback_send(compositor->default_dmabuf_feedback,
|
|
compositor->dmabuf_feedback_format_table,
|
|
dmabuf_feedback_resource, true);
|
|
}
|
|
|
|
static int
|
|
create_surface_dmabuf_feedback(struct weston_compositor *ec,
|
|
struct weston_surface *surface)
|
|
{
|
|
struct weston_dmabuf_feedback_tranche *tranche;
|
|
dev_t main_device = ec->default_dmabuf_feedback->main_device;
|
|
uint32_t flags = 0;
|
|
|
|
surface->dmabuf_feedback = weston_dmabuf_feedback_create(main_device);
|
|
if (!surface->dmabuf_feedback)
|
|
return -1;
|
|
|
|
tranche = weston_dmabuf_feedback_tranche_create(surface->dmabuf_feedback,
|
|
ec->dmabuf_feedback_format_table,
|
|
main_device, flags,
|
|
RENDERER_PREF);
|
|
if (!tranche) {
|
|
weston_dmabuf_feedback_destroy(surface->dmabuf_feedback);
|
|
surface->dmabuf_feedback = NULL;
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
linux_dmabuf_get_per_surface_feedback(struct wl_client *client,
|
|
struct wl_resource *dmabuf_resource,
|
|
uint32_t dmabuf_feedback_id,
|
|
struct wl_resource *surface_resource)
|
|
{
|
|
struct weston_compositor *compositor =
|
|
wl_resource_get_user_data(dmabuf_resource);
|
|
struct weston_surface *surface =
|
|
wl_resource_get_user_data(surface_resource);
|
|
struct wl_resource *dmabuf_feedback_resource;
|
|
int ret;
|
|
|
|
dmabuf_feedback_resource =
|
|
dmabuf_feedback_resource_create(dmabuf_resource,
|
|
client, dmabuf_feedback_id,
|
|
surface);
|
|
if (!dmabuf_feedback_resource)
|
|
goto err;
|
|
|
|
if (!surface->dmabuf_feedback) {
|
|
ret = create_surface_dmabuf_feedback(compositor, surface);
|
|
if (ret < 0)
|
|
goto err_feedback;
|
|
}
|
|
|
|
/* Surface dma-buf feedback is dynamic and may need to be resent to
|
|
* clients when they change. So we need to keep the resources list */
|
|
wl_list_insert(&surface->dmabuf_feedback->resource_list,
|
|
wl_resource_get_link(dmabuf_feedback_resource));
|
|
|
|
weston_dmabuf_feedback_send(surface->dmabuf_feedback,
|
|
surface->compositor->dmabuf_feedback_format_table,
|
|
dmabuf_feedback_resource, true);
|
|
return;
|
|
|
|
err_feedback:
|
|
wl_resource_set_user_data(dmabuf_feedback_resource, NULL);
|
|
wl_resource_destroy(dmabuf_feedback_resource);
|
|
err:
|
|
wl_resource_post_no_memory(dmabuf_resource);
|
|
}
|
|
|
|
/** Get the linux_dmabuf_buffer from a wl_buffer resource
|
|
*
|
|
* If the given wl_buffer resource was created through the linux_dmabuf
|
|
* protocol interface, returns the linux_dmabuf_buffer object. This can
|
|
* be used as a type check for a wl_buffer.
|
|
*
|
|
* \param resource A wl_buffer resource.
|
|
* \return The linux_dmabuf_buffer if it exists, or NULL otherwise.
|
|
*/
|
|
WL_EXPORT struct linux_dmabuf_buffer *
|
|
linux_dmabuf_buffer_get(struct wl_resource *resource)
|
|
{
|
|
struct linux_dmabuf_buffer *buffer;
|
|
|
|
if (!resource)
|
|
return NULL;
|
|
|
|
if (!wl_resource_instance_of(resource, &wl_buffer_interface,
|
|
&linux_dmabuf_buffer_implementation))
|
|
return NULL;
|
|
|
|
buffer = wl_resource_get_user_data(resource);
|
|
assert(buffer);
|
|
assert(!buffer->params_resource);
|
|
assert(buffer->buffer_resource == resource);
|
|
|
|
return buffer;
|
|
}
|
|
|
|
/** Set renderer-private data
|
|
*
|
|
* Set the user data for the linux_dmabuf_buffer. It is invalid to overwrite
|
|
* a non-NULL user data with a new non-NULL pointer. This is meant to
|
|
* protect against renderers fighting over linux_dmabuf_buffer user data
|
|
* ownership.
|
|
*
|
|
* The renderer-private data is usually set from the
|
|
* weston_renderer::import_dmabuf hook.
|
|
*
|
|
* \param buffer The linux_dmabuf_buffer object to set for.
|
|
* \param data The new renderer-private data pointer.
|
|
* \param func Destructor function to be called for the renderer-private
|
|
* data when the linux_dmabuf_buffer gets destroyed.
|
|
*
|
|
* \sa weston_compositor_import_dmabuf
|
|
*/
|
|
WL_EXPORT void
|
|
linux_dmabuf_buffer_set_user_data(struct linux_dmabuf_buffer *buffer,
|
|
void *data,
|
|
dmabuf_user_data_destroy_func func)
|
|
{
|
|
assert(data == NULL || buffer->user_data == NULL);
|
|
|
|
buffer->user_data = data;
|
|
buffer->user_data_destroy_func = func;
|
|
}
|
|
|
|
/** Get renderer-private data
|
|
*
|
|
* Get the user data from the linux_dmabuf_buffer.
|
|
*
|
|
* \param buffer The linux_dmabuf_buffer to query.
|
|
* \return Renderer-private data pointer.
|
|
*
|
|
* \sa linux_dmabuf_buffer_set_user_data
|
|
*/
|
|
WL_EXPORT void *
|
|
linux_dmabuf_buffer_get_user_data(struct linux_dmabuf_buffer *buffer)
|
|
{
|
|
return buffer->user_data;
|
|
}
|
|
|
|
static const struct zwp_linux_dmabuf_v1_interface linux_dmabuf_implementation = {
|
|
linux_dmabuf_destroy,
|
|
linux_dmabuf_create_params,
|
|
linux_dmabuf_get_default_feedback,
|
|
linux_dmabuf_get_per_surface_feedback
|
|
};
|
|
|
|
static void
|
|
bind_linux_dmabuf(struct wl_client *client,
|
|
void *data, uint32_t version, uint32_t id)
|
|
{
|
|
struct weston_compositor *compositor = data;
|
|
const struct weston_drm_format_array *supported_formats;
|
|
struct wl_resource *resource;
|
|
struct weston_drm_format *fmt;
|
|
const uint64_t *modifiers;
|
|
unsigned int num_modifiers;
|
|
unsigned int i;
|
|
|
|
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_implementation,
|
|
compositor, NULL);
|
|
|
|
/* Advertise formats/modifiers. From version 4 onwards, we should not send
|
|
* zwp_linux_dmabuf_v1_send_modifier and zwp_linux_dmabuf_v1_send_format
|
|
* events, instead we must send the dma-buf feedback events. */
|
|
if (version >= 4)
|
|
return;
|
|
|
|
/* If we got here, it means that the renderer is able to import dma-buf
|
|
* buffers, and so it must have get_supported_formats() set. */
|
|
assert(compositor->renderer->get_supported_formats != NULL);
|
|
supported_formats = compositor->renderer->get_supported_formats(compositor);
|
|
|
|
wl_array_for_each(fmt, &supported_formats->arr) {
|
|
modifiers = weston_drm_format_get_modifiers(fmt, &num_modifiers);
|
|
for (i = 0; i < num_modifiers; i++) {
|
|
if (version >= ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION) {
|
|
uint32_t modifier_lo = modifiers[i] & 0xFFFFFFFF;
|
|
uint32_t modifier_hi = modifiers[i] >> 32;
|
|
zwp_linux_dmabuf_v1_send_modifier(resource,
|
|
fmt->format,
|
|
modifier_hi,
|
|
modifier_lo);
|
|
} else if (modifiers[i] == DRM_FORMAT_MOD_LINEAR ||
|
|
modifiers[i] == DRM_FORMAT_MOD_INVALID) {
|
|
zwp_linux_dmabuf_v1_send_format(resource,
|
|
fmt->format);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Advertise linux_dmabuf support
|
|
*
|
|
* Calling this initializes the zwp_linux_dmabuf protocol support, so that
|
|
* the interface will be advertised to clients. Essentially it creates a
|
|
* global. Do not call this function multiple times in the compositor's
|
|
* lifetime. There is no way to deinit explicitly, globals will be reaped
|
|
* when the wl_display gets destroyed.
|
|
*
|
|
* \param compositor The compositor to init for.
|
|
* \return Zero on success, -1 on failure.
|
|
*/
|
|
WL_EXPORT int
|
|
linux_dmabuf_setup(struct weston_compositor *compositor)
|
|
{
|
|
int max_version;
|
|
|
|
/* If we were able to create the default dma-buf feedback for the
|
|
* compositor, that means that we are able to advertise dma-buf feedback
|
|
* events. In such case we support the version 4 of the protocol. */
|
|
max_version = compositor->default_dmabuf_feedback ? 4 : 3;
|
|
|
|
if (!wl_global_create(compositor->wl_display,
|
|
&zwp_linux_dmabuf_v1_interface,
|
|
max_version, compositor, bind_linux_dmabuf))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Resolve an internal compositor error by disconnecting the client.
|
|
*
|
|
* This function is used in cases when the dmabuf-based wl_buffer
|
|
* turns out unusable and there is no fallback path. This is used by
|
|
* renderers which are the fallback path in the first place.
|
|
*
|
|
* It is possible the fault is caused by a compositor bug, the underlying
|
|
* graphics stack bug or normal behaviour, or perhaps a client mistake.
|
|
* In any case, the options are to either composite garbage or nothing,
|
|
* or disconnect the client. This is a helper function for the latter.
|
|
*
|
|
* The error is sent as an INVALID_OBJECT error on the client's wl_display.
|
|
*
|
|
* \param buffer The linux_dmabuf_buffer that is unusable.
|
|
* \param msg A custom error message attached to the protocol error.
|
|
*/
|
|
WL_EXPORT void
|
|
linux_dmabuf_buffer_send_server_error(struct linux_dmabuf_buffer *buffer,
|
|
const char *msg)
|
|
{
|
|
struct wl_client *client;
|
|
struct wl_resource *display_resource;
|
|
uint32_t id;
|
|
|
|
assert(buffer->buffer_resource);
|
|
id = wl_resource_get_id(buffer->buffer_resource);
|
|
client = wl_resource_get_client(buffer->buffer_resource);
|
|
display_resource = wl_client_get_object(client, 1);
|
|
|
|
assert(display_resource);
|
|
wl_resource_post_error(display_resource,
|
|
WL_DISPLAY_ERROR_INVALID_OBJECT,
|
|
"linux_dmabuf server error with "
|
|
"wl_buffer@%u: %s", id, msg);
|
|
}
|