gbm.c

#include <gbm.h>

#include <assert.h>
#include <stdio.h>

static struct gbm_device *gbm;

void gbm_init(int drm_fd) {
	gbm = gbm_create_device(drm_fd);
	assert(gbm);
}

struct gbm_device *gbm_get_device() {
	return gbm;
}

struct gbm_bo *gbm_import_from_dmabuf(int num_fds, int32_t *dmabuf_fds,
uint32_t width, uint32_t height, uint32_t format, uint32_t *strides, uint32_t
*offsets, uint64_t modifier) {
	struct gbm_import_fd_modifier_data data = {
		.width = width,
		.height = height,
		.format = format,
		.num_fds = 1,
		.fds[0] = dmabuf_fds[0],
		.strides[0] = strides[0],
		.offsets[0] = offsets[0],
		.modifier = modifier
	};
	struct gbm_bo *gbm_bo = gbm_bo_import(gbm,
	 GBM_BO_IMPORT_FD_MODIFIER, &data, GBM_BO_USE_SCANOUT);

	if (!gbm_bo) {
		fprintf(stderr, "gbm_bo_import failed\n");
		return 0;
	}

	return gbm_bo;
}

void gbm_destroy(struct gbm_bo *gbm_bo) { gbm_bo_destroy(gbm_bo); }

uint32_t gbm_get_handle(struct gbm_bo *gbm_bo) { return gbm_bo_get_handle(gbm_bo).u32; }

void gbm_fini() {
	gbm_device_destroy(gbm);
}