/*
 * GStreamer EGL Library 
 * Copyright (C) 2012 Collabora Ltd.
 *   @author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
 * *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __GST_EGL_H__
#define __GST_EGL_H__

#include <gst/gst.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>

#define GST_EGL_IMAGE_MEMORY_TYPE "EGLImage"

typedef enum {
  GST_EGL_IMAGE_MEMORY_TYPE_INVALID = -1,
  /* GL formats */
  GST_EGL_IMAGE_MEMORY_TYPE_LUMINANCE = 0x0000,
  GST_EGL_IMAGE_MEMORY_TYPE_LUMINANCE_ALPHA,
  GST_EGL_IMAGE_MEMORY_TYPE_RGB16,
  GST_EGL_IMAGE_MEMORY_TYPE_RGB,
  GST_EGL_IMAGE_MEMORY_TYPE_RGBA,
  /* YUV formats */
  /* GST_EGL_IMAGE_MEMORY_TYPE_YUV420P = 0x1000, */
  /* Other */
  GST_EGL_IMAGE_MEMORY_TYPE_OTHER = 0xffff
} GstEGLImageType;

typedef struct _GstEGLDisplay GstEGLDisplay;

/* EGLImage GstMemory handling */
gboolean gst_egl_image_memory_can_map (void);
gboolean gst_is_egl_image_memory (GstMemory * mem);
EGLImageKHR gst_egl_image_memory_get_image (GstMemory * mem);
GstEGLDisplay * gst_egl_image_memory_get_display (GstMemory * mem);
GstEGLImageType gst_egl_image_memory_get_type (GstMemory * mem);

/* Generic EGLImage allocator that doesn't support mapping, copying or anything */
GstAllocator * gst_egl_image_allocator_obtain (void);
GstMemory * gst_egl_image_allocator_alloc (GstAllocator * allocator, GstEGLDisplay * display, GstEGLImageType type, gint width, gint height, gsize * size);
GstMemory * gst_egl_image_allocator_wrap (GstAllocator * allocator, GstEGLDisplay * display, EGLImageKHR image, GstEGLImageType type, gsize size, gpointer user_data, GDestroyNotify user_data_destroy);

/* EGLDisplay wrapper with refcount, connection is closed after last ref is gone */
GstEGLDisplay * gst_egl_display_new (EGLDisplay display);
GstEGLDisplay * gst_egl_display_ref (GstEGLDisplay * display);
void gst_egl_display_unref (GstEGLDisplay * display);
EGLDisplay gst_egl_display_get (GstEGLDisplay * display);

#define GST_BUFFER_POOL_OPTION_EGL_IMAGE "GstBufferPoolOptionEGLImage"

#if 0
/* setting a bufferpool config */
void             gst_buffer_pool_config_set_egl_image_supports_multiple_images (GstStructure *config, gboolean  supported);
gboolean         gst_buffer_pool_config_get_egl_image_supports_multiple_images (GstStructure *config, gboolean *supported);
#endif

#endif /* __GST_EGL_H__ */