/*
 * Copyright (c) 2011 Benjamin Franzke
 * 
 * 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 <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>

#include "wfddevice.h"
#include "wfdsource.h"

#include <gbm.h>
#define EGL_EGLEXT_PROTOTYPES
#include <EGL/egl.h>
#include <EGL/eglext.h>

struct wfd_source {
	uint32_t handle;
	uint32_t pitch;
};

/* provided by mesa, but not part of the public api */
struct gbm_device *
_gbm_mesa_get_device(int fd);

static int
egl_image_export(struct wfd_device *device,
		 EGLImageKHR image,
		 uint32_t *handle, uint32_t *pitch)
{
	int fd = wfd_device_get_attribi(device, WFD_DEVICE_ID);
	struct gbm_device *gbm = _gbm_mesa_get_device(fd);
	struct gbm_bo *bo;

	bo = gbm_bo_create_from_egl_image(gbm, eglGetDisplay(gbm), image,
					  1, 1, GBM_BO_USE_SCANOUT);
	*handle = gbm_bo_get_handle(bo).u32;
	*pitch = gbm_bo_get_pitch(bo);
	gbm_bo_destroy(bo);
	gbm_device_destroy(gbm);

	return 0;
}

void
wfd_source_destroy(struct wfd_device *device,
		 struct wfd_source *source)
{
	free(source);
}

struct wfd_source *
wfd_source_create(struct wfd_device *device,
		  struct wfd_pipeline *pipeline,
		  WFDEGLImage image,
		  const WFDint *attrib_list)
{
	struct wfd_source *source;

	source = calloc(1, sizeof *source);
	if (source == NULL)
		return NULL;

	egl_image_export(device, (EGLImageKHR) image,
			 &source->handle, &source->pitch);

	return source;
}

uint32_t
wfd_source_get_pitch(struct wfd_source *source)
{
	return source->pitch;
}

uint32_t
wfd_source_get_handle(struct wfd_source *source)
{
	return source->handle;
}