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linux-dmabuf-v1: add per-surface feedback

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This commit is contained in:
Simon Ser 2021-06-07 18:20:45 +02:00
parent 1d8340754b
commit c50c4fc5cc
2 changed files with 226 additions and 3 deletions
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12
include/wlr/types/wlr_linux_dmabuf_v1.h
View file

@ -15,6 +15,8 @@
#include <wlr/types/wlr_buffer.h>
#include <wlr/render/dmabuf.h>
struct wlr_surface;
struct wlr_dmabuf_v1_buffer {
struct wlr_buffer base;
@ -63,6 +65,7 @@ struct wlr_linux_dmabuf_v1 {
// private state
struct wlr_linux_dmabuf_feedback_v1_compiled *default_feedback;
struct wl_list surfaces; // wlr_linux_dmabuf_v1_surface.link
struct wl_listener display_destroy;
struct wl_listener renderer_destroy;
@ -74,4 +77,13 @@ struct wlr_linux_dmabuf_v1 {
struct wlr_linux_dmabuf_v1 *wlr_linux_dmabuf_v1_create(struct wl_display *display,
struct wlr_renderer *renderer);
/**
* Set a surface's DMA-BUF feedback.
*
* Passing a NULL feedback resets it to the default feedback.
*/
bool wlr_linux_dmabuf_v1_set_surface_feedback(
struct wlr_linux_dmabuf_v1 *linux_dmabuf, struct wlr_surface *surface,
const struct wlr_linux_dmabuf_feedback_v1 *feedback);
#endif

217
types/wlr_linux_dmabuf_v1.c
View file

@ -6,6 +6,7 @@
#include <unistd.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_linux_dmabuf_v1.h>
#include <wlr/types/wlr_surface.h>
#include <wlr/util/log.h>
#include "linux-dmabuf-unstable-v1-protocol.h"
#include "render/drm_format_set.h"
@ -47,6 +48,17 @@ struct wlr_linux_dmabuf_feedback_v1_table_entry {
_Static_assert(sizeof(struct wlr_linux_dmabuf_feedback_v1_table_entry) == 16,
"Expected wlr_linux_dmabuf_feedback_v1_table_entry to be tightly packed");
struct wlr_linux_dmabuf_v1_surface {
struct wlr_surface *surface;
struct wlr_linux_dmabuf_v1 *linux_dmabuf;
struct wl_list link; // wlr_linux_dmabuf_v1.surfaces
struct wlr_addon addon;
struct wlr_linux_dmabuf_feedback_v1_compiled *feedback;
struct wl_list feedback_resources; // wl_resource_get_link
};
static void buffer_handle_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
@ -451,6 +463,36 @@ static const struct zwp_linux_dmabuf_feedback_v1_interface
.destroy = linux_dmabuf_feedback_destroy,
};
static ssize_t get_drm_format_set_index(const struct wlr_drm_format_set *set,
uint32_t format, uint64_t modifier) {
bool format_found = false;
const struct wlr_drm_format *fmt;
size_t idx = 0;
for (size_t i = 0; i < set->len; i++) {
fmt = set->formats[i];
if (fmt->format == format) {
format_found = true;
break;
}
idx += 1 + fmt->len;
}
if (!format_found) {
return -1;
}
if (modifier == DRM_FORMAT_MOD_INVALID) {
return idx;
}
for (size_t i = 0; i < fmt->len; i++) {
if (fmt->modifiers[i] == modifier) {
return idx;
}
idx++;
}
return -1;
}
static struct wlr_linux_dmabuf_feedback_v1_compiled *feedback_compile(
const struct wlr_linux_dmabuf_feedback_v1 *feedback) {
assert(feedback->tranches_len > 0);
@ -523,7 +565,53 @@ static struct wlr_linux_dmabuf_feedback_v1_compiled *feedback_compile(
// Build the indices lists for all but the last (fallback) tranches
for (size_t i = 0; i < feedback->tranches_len - 1; i++) {
assert(false); // TODO: unimplemented
const struct wlr_linux_dmabuf_feedback_v1_tranche *tranche =
&feedback->tranches[i];
struct wlr_linux_dmabuf_feedback_v1_compiled_tranche *compiled_tranche =
&compiled->tranches[i];
compiled_tranche->target_device = tranche->target_device;
compiled_tranche->flags = tranche->flags;
wl_array_init(&compiled_tranche->indices);
if (!wl_array_add(&compiled_tranche->indices, table_len * sizeof(uint16_t))) {
wlr_log(WLR_ERROR, "Failed to allocate tranche indices array");
goto error_compiled;
}
n = 0;
uint16_t *indices = compiled_tranche->indices.data;
for (size_t j = 0; j < tranche->formats->len; j++) {
const struct wlr_drm_format *fmt = tranche->formats->formats[j];
ssize_t index = get_drm_format_set_index(
fallback_tranche->formats, fmt->format,
DRM_FORMAT_MOD_INVALID);
if (index < 0) {
wlr_log(WLR_ERROR, "Format 0x%" PRIX32 " and modifier "
"INVALID are in tranche #%zu but are missing "
"from the fallback tranche",
fmt->format, i);
goto error_compiled;
}
indices[n] = index;
n++;
for (size_t k = 0; k < fmt->len; k++) {
ssize_t index = get_drm_format_set_index(
fallback_tranche->formats, fmt->format, fmt->modifiers[k]);
if (index < 0) {
wlr_log(WLR_ERROR, "Format 0x%" PRIX32 " and modifier "
"0x%" PRIX64 " are in tranche #%zu but are missing "
"from the fallback tranche",
fmt->format, fmt->modifiers[k], i);
goto error_compiled;
}
indices[n] = index;
n++;
}
}
compiled_tranche->indices.size = n * sizeof(uint16_t);
}
struct wlr_linux_dmabuf_feedback_v1_compiled_tranche *fallback_compiled_tranche =
@ -556,6 +644,9 @@ error_compiled:
static void compiled_feedback_destroy(
struct wlr_linux_dmabuf_feedback_v1_compiled *feedback) {
if (feedback == NULL) {
return;
}
for (size_t i = 0; i < feedback->tranches_len; i++) {
wl_array_release(&feedback->tranches[i].indices);
}
@ -656,11 +747,96 @@ static void linux_dmabuf_get_default_feedback(struct wl_client *client,
feedback_send(linux_dmabuf->default_feedback, feedback_resource);
}
static void surface_destroy(struct wlr_linux_dmabuf_v1_surface *surface) {
struct wl_resource *resource, *resource_tmp;
wl_resource_for_each_safe(resource, resource_tmp, &surface->feedback_resources) {
struct wl_list *link = wl_resource_get_link(resource);
wl_list_remove(link);
wl_list_init(link);
}
compiled_feedback_destroy(surface->feedback);
wlr_addon_finish(&surface->addon);
wl_list_remove(&surface->link);
free(surface);
}
static void surface_addon_destroy(struct wlr_addon *addon) {
struct wlr_linux_dmabuf_v1_surface *surface =
wl_container_of(addon, surface, addon);
surface_destroy(surface);
}
static const struct wlr_addon_interface surface_addon_impl = {
.name = "wlr_linux_dmabuf_v1_surface",
.destroy = surface_addon_destroy,
};
static struct wlr_linux_dmabuf_v1_surface *surface_get_or_create(
struct wlr_linux_dmabuf_v1 *linux_dmabuf,
struct wlr_surface *wlr_surface) {
struct wlr_addon *addon =
wlr_addon_find(&wlr_surface->addons, linux_dmabuf, &surface_addon_impl);
if (addon != NULL) {
struct wlr_linux_dmabuf_v1_surface *surface =
wl_container_of(addon, surface, addon);
return surface;
}
struct wlr_linux_dmabuf_v1_surface *surface = calloc(1, sizeof(*surface));
if (surface == NULL) {
return NULL;
}
surface->surface = wlr_surface;
surface->linux_dmabuf = linux_dmabuf;
wl_list_init(&surface->feedback_resources);
wlr_addon_init(&surface->addon, &wlr_surface->addons, linux_dmabuf,
&surface_addon_impl);
wl_list_insert(&linux_dmabuf->surfaces, &surface->link);
return surface;
}
static const struct wlr_linux_dmabuf_feedback_v1_compiled *surface_get_feedback(
struct wlr_linux_dmabuf_v1_surface *surface) {
if (surface->feedback != NULL) {
return surface->feedback;
}
return surface->linux_dmabuf->default_feedback;
}
static void surface_feedback_handle_resource_destroy(struct wl_resource *resource) {
wl_list_remove(wl_resource_get_link(resource));
}
static void linux_dmabuf_get_surface_feedback(struct wl_client *client,
struct wl_resource *resource, uint32_t id,
struct wl_resource *surface_resource) {
// TODO: implement per-surface feedback
linux_dmabuf_get_default_feedback(client, resource, id);
struct wlr_linux_dmabuf_v1 *linux_dmabuf =
linux_dmabuf_from_resource(resource);
struct wlr_surface *wlr_surface = wlr_surface_from_resource(surface_resource);
struct wlr_linux_dmabuf_v1_surface *surface =
surface_get_or_create(linux_dmabuf, wlr_surface);
if (surface == NULL) {
wl_client_post_no_memory(client);
return;
}
uint32_t version = wl_resource_get_version(resource);
struct wl_resource *feedback_resource = wl_resource_create(client,
&zwp_linux_dmabuf_feedback_v1_interface, version, id);
if (feedback_resource == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(feedback_resource, &linux_dmabuf_feedback_impl,
NULL, surface_feedback_handle_resource_destroy);
wl_list_insert(&surface->feedback_resources, wl_resource_get_link(feedback_resource));
feedback_send(surface_get_feedback(surface), feedback_resource);
}
static void linux_dmabuf_destroy(struct wl_client *client,
@ -736,6 +912,11 @@ static void linux_dmabuf_bind(struct wl_client *client, void *data,
static void linux_dmabuf_v1_destroy(struct wlr_linux_dmabuf_v1 *linux_dmabuf) {
wlr_signal_emit_safe(&linux_dmabuf->events.destroy, linux_dmabuf);
struct wlr_linux_dmabuf_v1_surface *surface, *surface_tmp;
wl_list_for_each_safe(surface, surface_tmp, &linux_dmabuf->surfaces, link) {
surface_destroy(surface);
}
compiled_feedback_destroy(linux_dmabuf->default_feedback);
wl_list_remove(&linux_dmabuf->display_destroy.link);
@ -767,6 +948,7 @@ struct wlr_linux_dmabuf_v1 *wlr_linux_dmabuf_v1_create(struct wl_display *displa
}
linux_dmabuf->renderer = renderer;
wl_list_init(&linux_dmabuf->surfaces);
wl_signal_init(&linux_dmabuf->events.destroy);
linux_dmabuf->global =
@ -794,3 +976,32 @@ struct wlr_linux_dmabuf_v1 *wlr_linux_dmabuf_v1_create(struct wl_display *displa
return linux_dmabuf;
}
bool wlr_linux_dmabuf_v1_set_surface_feedback(
struct wlr_linux_dmabuf_v1 *linux_dmabuf,
struct wlr_surface *wlr_surface,
const struct wlr_linux_dmabuf_feedback_v1 *feedback) {
struct wlr_linux_dmabuf_v1_surface *surface =
surface_get_or_create(linux_dmabuf, wlr_surface);
if (surface == NULL) {
return false;
}
struct wlr_linux_dmabuf_feedback_v1_compiled *compiled = NULL;
if (feedback != NULL) {
compiled = feedback_compile(feedback);
if (compiled == NULL) {
return false;
}
}
compiled_feedback_destroy(surface->feedback);
surface->feedback = compiled;
struct wl_resource *resource;
wl_resource_for_each(resource, &surface->feedback_resources) {
feedback_send(surface_get_feedback(surface), resource);
}
return true;
}