/****************************************************************************
 * arch/arm/src/stm32/stm32_dma2d.h
 *
 *   Copyright (C) 2014-2015, 2018 Marco Krahl. All rights reserved.
 *   Author: Marco Krahl <ocram.lhark@gmail.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

#ifndef __ARCH_ARM_SRC_STM32_STM32_DMA2D_H
#define __ARCH_ARM_SRC_STM32_STM32_DMA2D_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#include <nuttx/video/fb.h>

#ifdef CONFIG_FB_OVERLAY

/****************************************************************************
 * Public Types
 ****************************************************************************/

/* This structure describes DMA2D overlay information */

struct stm32_dma2d_overlay_s
{
  uint8_t    fmt;                         /* DMA2D pixel format */
  uint8_t    transp_mode;                 /* DMA2D transparency mode */
  fb_coord_t xres;                        /* X-resolution overlay */
  fb_coord_t yres;                        /* Y-resolution overlay */
  FAR struct fb_overlayinfo_s *oinfo;     /* Framebuffer overlay information */
};

/* DMA2D is controlled by the following interface */

struct dma2d_layer_s
{
  /* Name: setclut
   *
   * Description:
   *   Set the cmap table for both foreground and background layer.
   *   Up to 256 colors supported.
   *
   * Parameter:
   *   cmap  - Reference to the cmap table
   *
   * Returned Value:
   *   On success - OK
   *   On error   - -EINVAL
   */

#ifdef CONFIG_STM32_FB_CMAP
  int (*setclut)(FAR const struct fb_cmap_s * cmap);
#endif

  /* Name: fillcolor
   *
   * Description:
   *   Fill a specific memory region with a color.
   *   The caller must ensure that the memory region (area) is within the entire
   *   overlay.
   *
   * Parameter:
   *   oinfo  - Reference to overlay information
   *   area   - Reference to the area to fill
   *   argb   - argb8888 color
   *
   * Returned Value:
   *   On success - OK
   *   On error   - -EINVAL
   */

  int (*fillcolor)(FAR struct stm32_dma2d_overlay_s *oinfo,
                   FAR const struct fb_area_s *area, uint32_t argb);

  /* Name: blit
   *
   * Description:
   *   Copies memory from a source overlay (defined by sarea) to destination
   *   overlay position (defined by destxpos and destypos) without pixelformat
   *   conversion. The caller must ensure that the memory region (area) is
   *   within the entire overlay.
   *
   * Parameter:
   *   doverlay - Reference destination overlay
   *   destxpos - x-Offset destination overlay
   *   destypos - y-Offset destination overlay
   *   soverlay - Reference source overlay
   *   sarea    - Reference source area
   *
   * Returned Value:
   *   On success - OK
   *   On error   - -EINVAL
   */

  int (*blit)(FAR struct stm32_dma2d_overlay_s *doverlay,
              uint32_t destxpos, uint32_t destypos,
              FAR struct stm32_dma2d_overlay_s *soverlay,
              FAR const struct fb_area_s *sarea);

  /* Name: blend
   *
   * Description:
   *   Blends two source memory areas to a destination memory area with
   *   pixelformat conversion if necessary. The caller must ensure that the
   *   memory region (area) is within the entire overlays.
   *
   * Parameter:
   *   doverlay - Destination overlay
   *   destxpos - x-Offset destination overlay
   *   destypos - y-Offset destination overlay
   *   foverlay - Foreground overlay
   *   forexpos - x-Offset foreground overlay
   *   foreypos - y-Offset foreground overlay
   *   boverlay - Background overlay
   *   barea    - x-Offset, y-Offset, x-resolution and y-resolution of
   *              background overlay
   *
   * Returned Value:
   *   On success - OK
   *   On error   - -EINVAL or -ECANCELED
   */

  int (*blend)(FAR struct stm32_dma2d_overlay_s *doverlay,
               uint32_t destxpos, uint32_t destypos,
               FAR struct stm32_dma2d_overlay_s *foverlay,
               uint32_t forexpos, uint32_t foreypos,
               FAR struct stm32_dma2d_overlay_s *boverlay,
               FAR const struct fb_area_s *barea);
};

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: stm32_dma2ddev
 *
 * Description:
 *   Get a reference to the DMA2D controller.
 *
 * Returned Value:
 *   On success - A valid DMA2D controller reference
 *   On error   - NULL and errno is set to
 *                -EINVAL if one of the parameter is invalid
 *
 ****************************************************************************/

FAR struct dma2d_layer_s *stm32_dma2ddev(void);

/****************************************************************************
 * Name: up_dma2dinitialize
 *
 * Description:
 *   Initialize the DMA2D controller
 *
 * Returned Value:
 *   OK - On success
 *   An error if initializing failed.
 *
 ****************************************************************************/

int stm32_dma2dinitialize(void);

/****************************************************************************
 * Name: up_dma2duninitialize
 *
 * Description:
 *   Uninitialize the DMA2D controller
 *
 ****************************************************************************/

void stm32_dma2duninitialize(void);

#endif /* CONFIG_FB_OVERLAY */
#endif /* __ARCH_ARM_SRC_STM32_STM32_DMA2D_H */