audk/MdePkg/Include/Protocol/ImageDecoder.h

/** @file
  This protocol provides generic image decoder interfaces to various image formats.

(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>

This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/
#ifndef __EFI_IMAGE_DECODER_PROTOCOL_H__
#define __EFI_IMAGE_DECODER_PROTOCOL_H__

#include <Protocol/HiiImage.h>


//
// In UEFI 2.6 spec,this guid value is duplicate with
// EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID. Now update this guid value to
// avoid the duplicate guid issue. So its value is not consistent with
// UEFI spec definition now. We have proposed to update UEFI spec to
// use this new guid. After new spec released, we will remove this
// comments.
//
#define EFI_HII_IMAGE_DECODER_PROTOCOL_GUID \
  {0x9e66f251, 0x727c, 0x418c, { 0xbf, 0xd6, 0xc2, 0xb4, 0x25, 0x28, 0x18, 0xea }}


#define EFI_HII_IMAGE_DECODER_NAME_JPEG_GUID \
  {0xefefd093, 0xd9b, 0x46eb,  { 0xa8, 0x56, 0x48, 0x35, 0x7, 0x0, 0xc9, 0x8 }}

#define EFI_HII_IMAGE_DECODER_NAME_PNG_GUID \
  {0xaf060190, 0x5e3a, 0x4025, { 0xaf, 0xbd, 0xe1, 0xf9, 0x5, 0xbf, 0xaa, 0x4c }}

typedef struct _EFI_HII_IMAGE_DECODER_PROTOCOL EFI_HII_IMAGE_DECODER_PROTOCOL;

typedef enum {
  EFI_HII_IMAGE_DECODER_COLOR_TYPE_RGB     = 0x0,
  EFI_HII_IMAGE_DECODER_COLOR_TYPE_RGBA    = 0x1,
  EFI_HII_IMAGE_DECODER_COLOR_TYPE_CMYK    = 0x2,
  EFI_HII_IMAGE_DECODER_COLOR_TYPE_UNKNOWN = 0xFF
} EFI_HII_IMAGE_DECODER_COLOR_TYPE;

//
// EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER
//
// DecoderName        Name of the decoder
// ImageInfoSize      The size of entire image information structure in bytes
// ImageWidth         The image width
// ImageHeight        The image height
// ColorType          The color type, see EFI_HII_IMAGE_DECODER_COLOR_TYPE.
// ColorDepthInBits   The color depth in bits
//
typedef struct _EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER {
  EFI_GUID                            DecoderName;
  UINT16                              ImageInfoSize;
  UINT16                              ImageWidth;
  UINT16                              ImageHeight;
  EFI_HII_IMAGE_DECODER_COLOR_TYPE    ColorType;
  UINT8                               ColorDepthInBits;
} EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER;

//
// EFI_HII_IMAGE_DECODER_JPEG_INFO
// Header         The common header
// ScanType       The scan type of JPEG image
// Reserved       Reserved
//
typedef struct _EFI_HII_IMAGE_DECODER_JPEG_INFO {
  EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER  Header;

#define EFI_IMAGE_JPEG_SCANTYPE_PROGREESSIVE 0x01
#define EFI_IMAGE_JPEG_SCANTYPE_INTERLACED   0x02
  UINT16                                    ScanType;
  UINT64                                    Reserved;
} EFI_HII_IMAGE_DECODER_JPEG_INFO;

//
// EFI_HII_IMAGE_DECODER_PNG_INFO
// Header         The common header
// Channels       Number of channels in the PNG image
// Reserved       Reserved
//
typedef struct _EFI_HII_IMAGE_DECODER_PNG_INFO {
  EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER  Header;
  UINT16                                    Channels;
  UINT64                                    Reserved;
} EFI_HII_IMAGE_DECODER_PNG_INFO;

/**
  There could be more than one EFI_HII_IMAGE_DECODER_PROTOCOL instances installed
  in the system for different image formats. This function returns the decoder
  name which callers can use to find the proper image decoder for the image. It
  is possible to support multiple image formats in one EFI_HII_IMAGE_DECODER_PROTOCOL.
  The capability of the supported image formats is returned in DecoderName and
  NumberOfDecoderName.

  @param This                    EFI_HII_IMAGE_DECODER_PROTOCOL instance.
  @param DecoderName             Pointer to a dimension to retrieve the decoder
                                 names in EFI_GUID format. The number of the
                                 decoder names is returned in NumberOfDecoderName.
  @param NumberofDecoderName     Pointer to retrieve the number of decoders which
                                 supported by this decoder driver.

  @retval EFI_SUCCESS            Get decoder name success.
  @retval EFI_UNSUPPORTED        Get decoder name fail.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_HII_IMAGE_DECODER_GET_DECODER_NAME)(
  IN      EFI_HII_IMAGE_DECODER_PROTOCOL   *This,
  IN OUT  EFI_GUID                         **DecoderName,
  IN OUT  UINT16                           *NumberofDecoderName
  );

/**
  This function returns the image information of the given image raw data. This
  function first checks whether the image raw data is supported by this decoder
  or not. This function may go through the first few bytes in the image raw data
  for the specific data structure or the image signature. If the image is not supported
  by this image decoder, this function returns EFI_UNSUPPORTED to the caller.
  Otherwise, this function returns the proper image information to the caller.
  It is the caller?s responsibility to free the ImageInfo.

  @param This                    EFI_HII_IMAGE_DECODER_PROTOCOL instance.
  @param Image                   Pointer to the image raw data.
  @param SizeOfImage             Size of the entire image raw data.
  @param ImageInfo               Pointer to recieve EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER.

  @retval EFI_SUCCESS            Get image info success.
  @retval EFI_UNSUPPORTED        Unsupported format of image.
  @retval EFI_INVALID_PARAMETER  Incorrect parameter.
  @retval EFI_BAD_BUFFER_SIZE    Not enough memory.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_HII_IMAGE_DECODER_GET_IMAGE_INFO)(
  IN      EFI_HII_IMAGE_DECODER_PROTOCOL           *This,
  IN      VOID                                     *Image,
  IN      UINTN                                    SizeOfImage,
  IN OUT  EFI_HII_IMAGE_DECODER_IMAGE_INFO_HEADER  **ImageInfo
  );

/**
  This function decodes the image which the image type of this image is supported
  by this EFI_HII_IMAGE_DECODER_PROTOCOL. If **Bitmap is not NULL, the caller intends
  to put the image in the given image buffer. That allows the caller to put an
  image overlap on the original image. The transparency is handled by the image
  decoder because the transparency capability depends on the image format. Callers
  can set Transparent to FALSE to force disabling the transparency process on the
  image. Forcing Transparent to FALSE may also improve the performance of the image
  decoding because the image decoder can skip the transparency processing.  If **Bitmap
  is NULL, the image decoder allocates the memory buffer for the EFI_IMAGE_OUTPUT
  and decodes the image to the image buffer. It is the caller?s responsibility to
  free the memory for EFI_IMAGE_OUTPUT. Image decoder doesn?t have to handle the
  transparency in this case because there is no background image given by the caller.
  The background color in this case is all black (#00000000).

  @param This                    EFI_HII_IMAGE_DECODER_PROTOCOL instance.
  @param Image                   Pointer to the image raw data.
  @param ImageRawDataSize        Size of the entire image raw data.
  @param Blt                     EFI_IMAGE_OUTPUT to receive the image or overlap
                                 the image on the original buffer.
  @param Transparent             BOOLEAN value indicates whether the image decoder
                                 has to handle the transparent image or not.


  @retval EFI_SUCCESS            Image decode success.
  @retval EFI_UNSUPPORTED        Unsupported format of image.
  @retval EFI_INVALID_PARAMETER  Incorrect parameter.
  @retval EFI_BAD_BUFFER_SIZE    Not enough memory.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_HII_IMAGE_DECODER_DECODE)(
  IN      EFI_HII_IMAGE_DECODER_PROTOCOL   *This,
  IN      VOID                              *Image,
  IN      UINTN                             ImageRawDataSize,
  IN OUT  EFI_IMAGE_OUTPUT                  **BitMap OPTIONAL,
  IN      BOOLEAN                           Transparent
  );

struct _EFI_HII_IMAGE_DECODER_PROTOCOL {
  EFI_HII_IMAGE_DECODER_GET_DECODER_NAME  GetImageDecoderName;
  EFI_HII_IMAGE_DECODER_GET_IMAGE_INFO    GetImageInfo;
  EFI_HII_IMAGE_DECODER_DECODE            DecodeImage;
};

extern EFI_GUID gEfiHiiImageDecoderProtocolGuid;
extern EFI_GUID gEfiHiiImageDecoderNameJpegGuid;
extern EFI_GUID gEfiHiiImageDecoderNamePngGuid;

#endif