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/* wld: buffer.c
*
* Copyright (c) 2013, 2014 Michael Forney
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "wld/wld-private.h"
void buffer_initialize(struct buffer *buffer,
const struct wld_buffer_impl *impl, uint32_t width,
uint32_t height, uint32_t format, uint32_t pitch) {
*((const struct wld_buffer_impl **)&buffer->base.impl) = impl;
buffer->base.width = width;
buffer->base.height = height;
buffer->base.format = format;
buffer->base.pitch = pitch;
buffer->base.map = NULL;
buffer->references = 1;
buffer->map_references = 0;
buffer->exporters = NULL;
buffer->destructors = NULL;
pixman_region32_init_rect(&buffer->base.damage, 0, 0, width, height);
}
EXPORT
bool wld_map(struct wld_buffer *base) {
struct buffer *buffer = (void *)base;
if (buffer->map_references == 0 && !buffer->base.impl->map(buffer))
return false;
++buffer->map_references;
return true;
}
EXPORT
bool wld_unmap(struct wld_buffer *base) {
struct buffer *buffer = (void *)base;
if (buffer->map_references == 0 ||
(buffer->map_references == 1 && !buffer->base.impl->unmap(buffer))) {
return false;
}
--buffer->map_references;
return true;
}
EXPORT
bool wld_export(struct wld_buffer *base, uint32_t type,
union wld_object *object) {
struct buffer *buffer = (void *)base;
struct wld_exporter *exporter;
for (exporter = buffer->exporters; exporter; exporter = exporter->next) {
if (exporter->export(exporter, &buffer->base, type, object))
return true;
}
return false;
}
EXPORT
void wld_buffer_add_exporter(struct wld_buffer *base,
struct wld_exporter *exporter) {
struct buffer *buffer = (void *)base;
exporter->next = buffer->exporters;
buffer->exporters = exporter;
}
EXPORT
void wld_buffer_add_destructor(struct wld_buffer *base,
struct wld_destructor *destructor) {
struct buffer *buffer = (void *)base;
destructor->next = buffer->destructors;
buffer->destructors = destructor;
}
EXPORT
void wld_buffer_reference(struct wld_buffer *base) {
struct buffer *buffer = (void *)base;
++buffer->references;
}
EXPORT
void wld_buffer_unreference(struct wld_buffer *base) {
struct buffer *buffer = (void *)base;
struct wld_destructor *destructor, *next;
if (--buffer->references > 0)
return;
pixman_region32_fini(&buffer->base.damage);
for (destructor = buffer->destructors; destructor; destructor = next) {
next = destructor->next;
destructor->destroy(destructor);
}
if (buffer->map_references > 0)
buffer->base.impl->unmap(buffer);
buffer->base.impl->destroy(buffer);
}
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