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Remove the wl_visual interface

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The visual interface was meant to be a generic mechanism for
specifying the content of a buffer.  It goes back to before we had the
buffer factory interfaces (like wl_drm and wl_shm) and we wanted to
keep it open-ended enough that yuv, png or even svg buffer or so would
be possible.

Now that we have the buffer abstraction, we can add different buffer
types by introducing new interfaces that create buffers.  It only
makes sense to leave it to those interfaces to specify the contents of
the buffers.

For wl_shm, this means that we now just specify the pixel format using
an enum.  For EGL buffers, the exact pixel formats are controlled by
the implementation (part of wl_drm and similar), and from the client
point of view, everything is controlled using EGLConfigs.
This commit is contained in:
Kristian Høgsberg 2011-08-30 21:26:19 -04:00
parent f9c8a691b2
commit c640571c00
5 changed files with 50 additions and 88 deletions
Download patch file Download diff file Expand all files Collapse all files

43
src/wayland-shm.c
View file

@ -41,6 +41,7 @@ struct wl_shm_buffer {
struct wl_buffer buffer;
struct wl_shm *shm;
int32_t stride;
uint32_t format;
void *data;
};
@ -81,8 +82,7 @@ const static struct wl_buffer_interface shm_buffer_interface = {
static struct wl_shm_buffer *
wl_shm_buffer_init(struct wl_shm *shm, struct wl_client *client, uint32_t id,
int32_t width, int32_t height,
int32_t stride, struct wl_visual *visual,
void *data)
int32_t stride, uint32_t format, void *data)
{
struct wl_shm_buffer *buffer;
@ -92,7 +92,7 @@ wl_shm_buffer_init(struct wl_shm *shm, struct wl_client *client, uint32_t id,
buffer->buffer.width = width;
buffer->buffer.height = height;
buffer->buffer.visual = visual;
buffer->format = format;
buffer->stride = stride;
buffer->data = data;
@ -115,17 +115,22 @@ wl_shm_buffer_init(struct wl_shm *shm, struct wl_client *client, uint32_t id,
static void
shm_create_buffer(struct wl_client *client, struct wl_resource *resource,
uint32_t id, int fd, int32_t width, int32_t height,
uint32_t stride, struct wl_resource *visual_resource)
uint32_t stride, uint32_t format)
{
struct wl_shm *shm = resource->data;
struct wl_shm_buffer *buffer;
struct wl_visual *visual = visual_resource->data;
void *data;
if (!visual || visual_resource->object.interface != &wl_visual_interface) {
switch (format) {
case WL_SHM_FORMAT_ARGB32:
case WL_SHM_FORMAT_PREMULTIPLIED_ARGB32:
case WL_SHM_FORMAT_XRGB32:
break;
default:
wl_client_post_error(client, &resource->object,
WL_SHM_ERROR_INVALID_VISUAL,
"invalid visual");
WL_SHM_ERROR_INVALID_FORMAT,
"invalid format");
close(fd);
return;
}
@ -151,8 +156,7 @@ shm_create_buffer(struct wl_client *client, struct wl_resource *resource,
}
buffer = wl_shm_buffer_init(shm, client, id,
width, height, stride, visual,
data);
width, height, stride, format, data);
if (buffer == NULL) {
munmap(data, stride * height);
wl_client_post_no_memory(client);
@ -170,8 +174,15 @@ static void
bind_shm(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
wl_client_add_object(client,
&wl_shm_interface, &shm_interface, id, data);
struct wl_resource *resource;
resource = wl_client_add_object(client, &wl_shm_interface,
&shm_interface, id, data);
wl_resource_post_event(resource, WL_SHM_FORMAT, WL_SHM_FORMAT_ARGB32);
wl_resource_post_event(resource, WL_SHM_FORMAT,
WL_SHM_FORMAT_PREMULTIPLIED_ARGB32);
wl_resource_post_event(resource, WL_SHM_FORMAT, WL_SHM_FORMAT_XRGB32);
}
WL_EXPORT struct wl_shm *
@ -232,3 +243,11 @@ wl_shm_buffer_get_data(struct wl_buffer *buffer_base)
return buffer->data;
}
WL_EXPORT uint32_t
wl_shm_buffer_get_format(struct wl_buffer *buffer_base)
{
struct wl_shm_buffer *buffer = (struct wl_shm_buffer *) buffer_base;
return buffer->format;
}