nvbuf_utils.h

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/*
 * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
 *
 * NVIDIA Corporation and its licensors retain all intellectual property
 * and proprietary rights in and to this software, related documentation
 * and any modifications thereto.  Any use, reproduction, disclosure or
 * distribution of this software and related documentation without an express
 * license agreement from NVIDIA Corporation is strictly prohibited.
 */

#ifndef _NVBUF_UTILS_H_
#define _NVBUF_UTILS_H_

#ifdef __cplusplus
extern "C"
{
#endif

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

#define MAX_NUM_PLANES 3

typedef enum
{
  NvBufferLayout_Pitch,
  NvBufferLayout_BlockLinear,
} NvBufferLayout;

typedef enum
{
  NvBufferColorFormat_YUV420,
  NvBufferColorFormat_YVU420,
  NvBufferColorFormat_NV12,
  NvBufferColorFormat_NV21,
  NvBufferColorFormat_UYVY,
  NvBufferColorFormat_Invalid,
} NvBufferColorFormat;

typedef struct _NvBufferParams
{
  uint32_t dmabuf_fd;
  void *nv_buffer;
  uint32_t nv_buffer_size;
  uint32_t pixel_format;
  uint32_t num_planes;
  uint32_t width[MAX_NUM_PLANES];
  uint32_t height[MAX_NUM_PLANES];
  uint32_t pitch[MAX_NUM_PLANES];
  uint32_t offset[MAX_NUM_PLANES];
}NvBufferParams;

EGLImageKHR NvEGLImageFromFd (EGLDisplay display, int dmabuf_fd);

int NvDestroyEGLImage (EGLDisplay display, EGLImageKHR eglImage);

int NvBufferCreate (int *dmabuf_fd, int width, int height,
    NvBufferLayout layout, NvBufferColorFormat colorFormat);

int NvBufferGetParams (int dmabuf_fd, NvBufferParams *params);

int NvBufferDestroy (int dmabuf_fd);

#ifdef __cplusplus
}
#endif

#endif