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compositor-drm: Rename drm_sprite to drm_plane

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We make the differentiation where planes are an abstract framebuffer
with a position within a CRTC/output, and sprites are special cases of
planes that are neither the primary (base/framebuffer) nor cursor plane.

drm_sprite, OTOH, contains nothing that's actually specific to sprites,
and we end up duplicating a lot of code to deal with them, especially
when we come to use an entirely plane-based interface with atomic
modesetting.

Rename drm_sprite to drm_plane, to reflect that it's actually generic.

No functional changes.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
[Pekka: dropped the removal of an unrelated comment]
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
dev
Daniel Stone 8 years ago committed by Pekka Paalanen
parent 205c0a018c
commit 08d4edf20d
1 changed files with 106 additions and 95 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 201
      libweston/compositor-drm.c

201
libweston/compositor-drm.c
Unescape View File

@ -162,6 +162,50 @@ struct drm_edid {
char serial_number[13];
};
/**
* A plane represents one buffer, positioned within a CRTC, and stacked
* relative to other planes on the same CRTC.
*
* Each CRTC has a 'primary plane', which use used to display the classic
* framebuffer contents, as accessed through the legacy drmModeSetCrtc
* call (which combines setting the CRTC's actual physical mode, and the
* properties of the primary plane).
*
* The cursor plane also has its own alternate legacy API.
*
* Other planes are used opportunistically to display content we do not
* wish to blit into the primary plane. These non-primary/cursor planes
* are referred to as 'sprites'.
*/
struct drm_plane {
struct wl_list link;
struct weston_plane base;
struct drm_output *output;
struct drm_backend *backend;
uint32_t possible_crtcs;
uint32_t plane_id;
uint32_t count_formats;
/* The last framebuffer submitted to the kernel for this plane. */
struct drm_fb *fb_current;
/* The previously-submitted framebuffer, where the hardware has not
* yet acknowledged display of fb_current. */
struct drm_fb *fb_last;
/* Framebuffer we are going to submit to the kernel when the current
* repaint is flushed. */
struct drm_fb *fb_pending;
int32_t src_x, src_y;
uint32_t src_w, src_h;
uint32_t dest_x, dest_y;
uint32_t dest_w, dest_h;
uint32_t formats[];
};
struct drm_output {
struct weston_output base;
drmModeConnector *connector;
@ -211,39 +255,6 @@ struct drm_output {
struct wl_event_source *pageflip_timer;
};
/*
* An output has a primary display plane plus zero or more sprites for
* blending display contents.
*/
struct drm_sprite {
struct wl_list link;
struct weston_plane plane;
struct drm_output *output;
struct drm_backend *backend;
uint32_t possible_crtcs;
uint32_t plane_id;
uint32_t count_formats;
/* The last framebuffer submitted to the kernel for this plane. */
struct drm_fb *fb_current;
/* The previously-submitted framebuffer, where the hardware has not
* yet acknowledged display of fb_current. */
struct drm_fb *fb_last;
/* Framebuffer we are going to submit to the kernel when the current
* repaint is flushed. */
struct drm_fb *fb_pending;
int32_t src_x, src_y;
uint32_t src_w, src_h;
uint32_t dest_x, dest_y;
uint32_t dest_w, dest_h;
uint32_t formats[];
};
static struct gl_renderer_interface *gl_renderer;
static const char default_seat[] = "seat0";
@ -306,9 +317,9 @@ static void
drm_output_update_msc(struct drm_output *output, unsigned int seq);
static int
drm_sprite_crtc_supported(struct drm_output *output, struct drm_sprite *sprite)
drm_plane_crtc_supported(struct drm_output *output, struct drm_plane *plane)
{
return !!(sprite->possible_crtcs & (1 << output->pipe));
return !!(plane->possible_crtcs & (1 << output->pipe));
}
static struct drm_output *
@ -845,7 +856,7 @@ drm_output_repaint(struct weston_output *output_base,
struct drm_output *output = to_drm_output(output_base);
struct drm_backend *backend =
to_drm_backend(output->base.compositor);
struct drm_sprite *s;
struct drm_plane *s;
struct drm_mode *mode;
int ret = 0;
@ -905,7 +916,7 @@ drm_output_repaint(struct weston_output *output_base,
/* XXX: Set output much earlier, so we don't attempt to place
* planes on entirely the wrong output. */
if ((!s->fb_current && !s->fb_pending) ||
!drm_sprite_crtc_supported(output, s))
!drm_plane_crtc_supported(output, s))
continue;
if (s->fb_pending && !backend->sprites_hidden)
@ -1048,7 +1059,7 @@ static void
vblank_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec,
void *data)
{
struct drm_sprite *s = (struct drm_sprite *)data;
struct drm_plane *s = (struct drm_plane *)data;
struct drm_output *output = s->output;
struct timespec ts;
uint32_t flags = WP_PRESENTATION_FEEDBACK_KIND_HW_COMPLETION |
@ -1115,7 +1126,7 @@ page_flip_handler(int fd, unsigned int frame,
}
static uint32_t
drm_output_check_sprite_format(struct drm_sprite *s,
drm_output_check_plane_format(struct drm_plane *p,
struct weston_view *ev, struct gbm_bo *bo)
{
uint32_t i, format;
@ -1136,8 +1147,8 @@ drm_output_check_sprite_format(struct drm_sprite *s,
pixman_region32_fini(&r);
}
for (i = 0; i < s->count_formats; i++)
if (s->formats[i] == format)
for (i = 0; i < p->count_formats; i++)
if (p->formats[i] == format)
return format;
return 0;
@ -1151,7 +1162,7 @@ drm_output_prepare_overlay_view(struct drm_output *output,
struct drm_backend *b = to_drm_backend(ec);
struct weston_buffer_viewport *viewport = &ev->surface->buffer_viewport;
struct wl_resource *buffer_resource;
struct drm_sprite *s;
struct drm_plane *p;
struct linux_dmabuf_buffer *dmabuf;
int found = 0;
struct gbm_bo *bo;
@ -1187,11 +1198,11 @@ drm_output_prepare_overlay_view(struct drm_output *output,
if (ev->alpha != 1.0f)
return NULL;
wl_list_for_each(s, &b->sprite_list, link) {
if (!drm_sprite_crtc_supported(output, s))
wl_list_for_each(p, &b->sprite_list, link) {
if (!drm_plane_crtc_supported(output, p))
continue;
if (!s->fb_pending) {
if (!p->fb_pending) {
found = 1;
break;
}
@ -1244,23 +1255,23 @@ drm_output_prepare_overlay_view(struct drm_output *output,
if (!bo)
return NULL;
format = drm_output_check_sprite_format(s, ev, bo);
format = drm_output_check_plane_format(p, ev, bo);
if (format == 0) {
gbm_bo_destroy(bo);
return NULL;
}
s->fb_pending = drm_fb_get_from_bo(bo, b, format, BUFFER_CLIENT);
if (!s->fb_pending) {
p->fb_pending = drm_fb_get_from_bo(bo, b, format, BUFFER_CLIENT);
if (!p->fb_pending) {
gbm_bo_destroy(bo);
return NULL;
}
drm_fb_set_buffer(s->fb_pending, ev->surface->buffer_ref.buffer);
drm_fb_set_buffer(p->fb_pending, ev->surface->buffer_ref.buffer);
box = pixman_region32_extents(&ev->transform.boundingbox);
s->plane.x = box->x1;
s->plane.y = box->y1;
p->base.x = box->x1;
p->base.y = box->y1;
/*
* Calculate the source & dest rects properly based on actual
@ -1277,10 +1288,10 @@ drm_output_prepare_overlay_view(struct drm_output *output,
output->base.transform,
output->base.current_scale,
*box);
s->dest_x = tbox.x1;
s->dest_y = tbox.y1;
s->dest_w = tbox.x2 - tbox.x1;
s->dest_h = tbox.y2 - tbox.y1;
p->dest_x = tbox.x1;
p->dest_y = tbox.y1;
p->dest_w = tbox.x2 - tbox.x1;
p->dest_h = tbox.y2 - tbox.y1;
pixman_region32_fini(&dest_rect);
pixman_region32_init(&src_rect);
@ -1317,13 +1328,13 @@ drm_output_prepare_overlay_view(struct drm_output *output,
viewport->buffer.scale,
tbox);
s->src_x = tbox.x1 << 8;
s->src_y = tbox.y1 << 8;
s->src_w = (tbox.x2 - tbox.x1) << 8;
s->src_h = (tbox.y2 - tbox.y1) << 8;
p->src_x = tbox.x1 << 8;
p->src_y = tbox.y1 << 8;
p->src_w = (tbox.x2 - tbox.x1) << 8;
p->src_h = (tbox.y2 - tbox.y1) << 8;
pixman_region32_fini(&src_rect);
return &s->plane;
return &p->base;
}
static struct weston_plane *
@ -2832,71 +2843,71 @@ err:
static void
create_sprites(struct drm_backend *b)
{
struct drm_sprite *sprite;
drmModePlaneRes *plane_res;
drmModePlane *plane;
struct drm_plane *plane;
drmModePlaneRes *kplane_res;
drmModePlane *kplane;
uint32_t i;
plane_res = drmModeGetPlaneResources(b->drm.fd);
if (!plane_res) {
kplane_res = drmModeGetPlaneResources(b->drm.fd);
if (!kplane_res) {
weston_log("failed to get plane resources: %s\n",
strerror(errno));
return;
}
for (i = 0; i < plane_res->count_planes; i++) {
plane = drmModeGetPlane(b->drm.fd, plane_res->planes[i]);
if (!plane)
for (i = 0; i < kplane_res->count_planes; i++) {
kplane = drmModeGetPlane(b->drm.fd, kplane_res->planes[i]);
if (!kplane)
continue;
sprite = zalloc(sizeof(*sprite) + ((sizeof(uint32_t)) *
plane->count_formats));
if (!sprite) {
plane = zalloc(sizeof(*plane) + ((sizeof(uint32_t)) *
kplane->count_formats));
if (!plane) {
weston_log("%s: out of memory\n",
__func__);
drmModeFreePlane(plane);
drmModeFreePlane(kplane);
continue;
}
sprite->possible_crtcs = plane->possible_crtcs;
sprite->plane_id = plane->plane_id;
sprite->fb_last = NULL;
sprite->fb_current = NULL;
sprite->fb_pending = NULL;
sprite->backend = b;
sprite->count_formats = plane->count_formats;
memcpy(sprite->formats, plane->formats,
plane->count_formats * sizeof(plane->formats[0]));
drmModeFreePlane(plane);
weston_plane_init(&sprite->plane, b->compositor, 0, 0);
weston_compositor_stack_plane(b->compositor, &sprite->plane,
plane->possible_crtcs = kplane->possible_crtcs;
plane->plane_id = kplane->plane_id;
plane->fb_last = NULL;
plane->fb_current = NULL;
plane->fb_pending = NULL;
plane->backend = b;
plane->count_formats = kplane->count_formats;
memcpy(plane->formats, kplane->formats,
kplane->count_formats * sizeof(kplane->formats[0]));
drmModeFreePlane(kplane);
weston_plane_init(&plane->base, b->compositor, 0, 0);
weston_compositor_stack_plane(b->compositor, &plane->base,
&b->compositor->primary_plane);
wl_list_insert(&b->sprite_list, &sprite->link);
wl_list_insert(&b->sprite_list, &plane->link);
}
drmModeFreePlaneResources(plane_res);
drmModeFreePlaneResources(kplane_res);
}
static void
destroy_sprites(struct drm_backend *backend)
{
struct drm_sprite *sprite, *next;
struct drm_plane *plane, *next;
struct drm_output *output;
output = container_of(backend->compositor->output_list.next,
struct drm_output, base.link);
wl_list_for_each_safe(sprite, next, &backend->sprite_list, link) {
wl_list_for_each_safe(plane, next, &backend->sprite_list, link) {
drmModeSetPlane(backend->drm.fd,
sprite->plane_id,
plane->plane_id,
output->crtc_id, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0);
assert(!sprite->fb_last);
assert(!sprite->fb_pending);
drm_fb_unref(sprite->fb_current);
weston_plane_release(&sprite->plane);
free(sprite);
assert(!plane->fb_last);
assert(!plane->fb_pending);
drm_fb_unref(plane->fb_current);
weston_plane_release(&plane->base);
free(plane);
}
}
@ -3102,7 +3113,7 @@ session_notify(struct wl_listener *listener, void *data)
{
struct weston_compositor *compositor = data;
struct drm_backend *b = to_drm_backend(compositor);
struct drm_sprite *sprite;
struct drm_plane *sprite;
struct drm_output *output;
if (compositor->session_active) {

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