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#include <assert.h>
#include <stdlib.h>
#include <wlr/interfaces/wlr_buffer.h>
#include <wlr/util/log.h>
#include "types/wlr_buffer.h"
static const struct wlr_buffer_impl dmabuf_buffer_impl;
static struct wlr_dmabuf_buffer *dmabuf_buffer_from_buffer(
struct wlr_buffer *wlr_buffer) {
assert(wlr_buffer->impl == &dmabuf_buffer_impl);
struct wlr_dmabuf_buffer *buffer = wl_container_of(wlr_buffer, buffer, base);
return buffer;
}
static void dmabuf_buffer_destroy(struct wlr_buffer *wlr_buffer) {
struct wlr_dmabuf_buffer *buffer = dmabuf_buffer_from_buffer(wlr_buffer);
wlr_buffer_finish(wlr_buffer);
if (buffer->saved) {
wlr_dmabuf_attributes_finish(&buffer->dmabuf);
}
free(buffer);
}
static bool dmabuf_buffer_get_dmabuf(struct wlr_buffer *wlr_buffer,
struct wlr_dmabuf_attributes *dmabuf) {
struct wlr_dmabuf_buffer *buffer = dmabuf_buffer_from_buffer(wlr_buffer);
if (buffer->dmabuf.n_planes == 0) {
return false;
}
*dmabuf = buffer->dmabuf;
return true;
}
static const struct wlr_buffer_impl dmabuf_buffer_impl = {
.destroy = dmabuf_buffer_destroy,
.get_dmabuf = dmabuf_buffer_get_dmabuf,
};
struct wlr_dmabuf_buffer *dmabuf_buffer_create(
struct wlr_dmabuf_attributes *dmabuf) {
struct wlr_dmabuf_buffer *buffer = calloc(1, sizeof(*buffer));
if (buffer == NULL) {
return NULL;
}
wlr_buffer_init(&buffer->base, &dmabuf_buffer_impl,
dmabuf->width, dmabuf->height);
buffer->dmabuf = *dmabuf;
return buffer;
}
bool dmabuf_buffer_drop(struct wlr_dmabuf_buffer *buffer) {
bool ok = true;
if (buffer->base.n_locks > 0) {
struct wlr_dmabuf_attributes saved_dmabuf = {0};
if (!wlr_dmabuf_attributes_copy(&saved_dmabuf, &buffer->dmabuf)) {
wlr_log(WLR_ERROR, "Failed to save DMA-BUF");
ok = false;
buffer->dmabuf = (struct wlr_dmabuf_attributes){0};
} else {
buffer->dmabuf = saved_dmabuf;
buffer->saved = true;
}
}
wlr_buffer_drop(&buffer->base);
return ok;
}
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