Interface for JPEG decode functions. More...

Data Structures
struct	jpeg_decode_callback_args_t

struct	jpeg_decode_cfg_t

struct	jpeg_decode_api_t

struct	jpeg_decode_instance_t

Macros
#define	JPEG_DECODE_API_VERSION_MAJOR (2U)

Typedefs
typedef void	jpeg_decode_ctrl_t

Enumerations
enum	jpeg_decode_color_space_t { JPEG_DECODE_COLOR_SPACE_YCBCR444 = 0, JPEG_DECODE_COLOR_SPACE_YCBCR422 = 1, JPEG_DECODE_COLOR_SPACE_YCBCR420 = 2, JPEG_DECODE_COLOR_SPACE_YCBCR411 = 6 }

enum	jpeg_decode_data_format_t { JPEG_DECODE_DATA_FORMAT_NORMAL = 0, JPEG_DECODE_DATA_FORMAT_BYTE_SWAP, JPEG_DECODE_DATA_FORMAT_WORD_SWAP, JPEG_DECODE_DATA_FORMAT_WORD_BYTE_SWAP, JPEG_DECODE_DATA_FORMAT_LONGWORD_SWAP, JPEG_DECODE_DATA_FORMAT_LONGWORD_BYTE_SWAP, JPEG_DECODE_DATA_FORMAT_LONGWORD_WORD_SWAP, JPEG_DECODE_DATA_FORMAT_LONGWORD_WORD_BYTE_SWAP }

enum	jpeg_decode_pixel_format_t { JPEG_DECODE_PIXEL_FORMAT_ARGB8888 = 1, JPEG_DECODE_PIXEL_FORMAT_RGB565 }

enum	jpeg_decode_status_t { JPEG_DECODE_STATUS_FREE = 0x0, JPEG_DECODE_STATUS_IDLE = 0x1, JPEG_DECODE_STATUS_RUNNING = 0x2, JPEG_DECODE_STATUS_DONE = 0x4, JPEG_DECODE_STATUS_INPUT_PAUSE = 0x8, JPEG_DECODE_STATUS_OUTPUT_PAUSE = 0x10, JPEG_DECODE_STATUS_IMAGE_SIZE_READY = 0x20, JPEG_DECODE_STATUS_ERROR = 0x40, JPEG_DECODE_STATUS_HEADER_PROCESSING = 0x80 }

enum	jpeg_decode_subsample_t { JPEG_DECODE_OUTPUT_NO_SUBSAMPLE = 0, JPEG_DECODE_OUTPUT_SUBSAMPLE_HALF, JPEG_DECODE_OUTPUT_SUBSAMPLE_ONE_QUARTER, JPEG_DECODE_OUTPUT_SUBSAMPLE_ONE_EIGHTH }

enum	jpeg_decode_count_enable_t { JPEG_DECODE_COUNT_DISABLE = 0, JPEG_DECODE_COUNT_ENABLE }

enum	jpeg_decode_resume_mode_t { JPEG_DECODE_COUNT_MODE_ADDRESS_CONTINUE = 0, JPEG_DECODE_COUNT_MODE_ADDRESS_REINITIALIZE }

Detailed Description

Interface for JPEG decode functions.

Summary

The JPEG DECODE interface provides JPEG decoder functionality. It allows application to convert a JPEG image into bitmap data suitable for display frame buffer.

Macro Definition Documentation

◆ JPEG_DECODE_API_VERSION_MAJOR

#define JPEG_DECODE_API_VERSION_MAJOR (2U)

Register definitions, common services and error codes. Configuration for this module

Typedef Documentation

◆ jpeg_decode_ctrl_t

typedef void jpeg_decode_ctrl_t

JPEG decode control block. Allocate an instance specific control block to pass into the JPEG decode API calls.

Implemented as

jpeg_decode_instance_ctrl_t

Enumeration Type Documentation

◆ jpeg_decode_color_space_t

enum jpeg_decode_color_space_t

Image color space definitions

Enumerator
JPEG_DECODE_COLOR_SPACE_YCBCR444	Color Space YCbCr 444.
JPEG_DECODE_COLOR_SPACE_YCBCR422	Color Space YCbCr 422.
JPEG_DECODE_COLOR_SPACE_YCBCR420	Color Space YCbCr 420.
JPEG_DECODE_COLOR_SPACE_YCBCR411	Color Space YCbCr 411.

◆ jpeg_decode_count_enable_t

enum jpeg_decode_count_enable_t

Data type for decoding count mode enable.

Enumerator
JPEG_DECODE_COUNT_DISABLE	Count mode disable.
JPEG_DECODE_COUNT_ENABLE	Count mode enable.

◆ jpeg_decode_data_format_t

enum jpeg_decode_data_format_t

Multi-byte Data Format

Enumerator
JPEG_DECODE_DATA_FORMAT_NORMAL	(1)(2)(3)(4)(5)(6)(7)(8) Normal byte order
JPEG_DECODE_DATA_FORMAT_BYTE_SWAP	(2)(1)(4)(3)(6)(5)(8)(7) Byte Swap
JPEG_DECODE_DATA_FORMAT_WORD_SWAP	(3)(4)(1)(2)(7)(8)(5)(6) Word Swap
JPEG_DECODE_DATA_FORMAT_WORD_BYTE_SWAP	(4)(3)(2)(1)(8)(7)(6)(5) Word-Byte Swap
JPEG_DECODE_DATA_FORMAT_LONGWORD_SWAP	(5)(6)(7)(8)(1)(2)(3)(4) Longword Swap
JPEG_DECODE_DATA_FORMAT_LONGWORD_BYTE_SWAP	(6)(5)(8)(7)(2)(1)(4)(3) Longword Byte Swap
JPEG_DECODE_DATA_FORMAT_LONGWORD_WORD_SWAP	(7)(8)(5)(6)(3)(4)(1)(2) Longword Word Swap
JPEG_DECODE_DATA_FORMAT_LONGWORD_WORD_BYTE_SWAP	(8)(7)(6)(5)(4)(3)(2)(1) Longword Word Byte Swap

◆ jpeg_decode_pixel_format_t

enum jpeg_decode_pixel_format_t

Pixel Data Format

Enumerator
JPEG_DECODE_PIXEL_FORMAT_ARGB8888	Pixel Data ARGB8888 format.
JPEG_DECODE_PIXEL_FORMAT_RGB565	Pixel Data RGB565 format.

◆ jpeg_decode_resume_mode_t

enum jpeg_decode_resume_mode_t

Data type for decoding count mode enable.

Enumerator
JPEG_DECODE_COUNT_MODE_ADDRESS_CONTINUE	The data buffer address will not be initialized when resuming image data lines.
JPEG_DECODE_COUNT_MODE_ADDRESS_REINITIALIZE	The data buffer address will be initialized when resuming image data lines.

◆ jpeg_decode_status_t

enum jpeg_decode_status_t

JPEG HLD driver internal status information. The driver can simultaneously be in more than any one status at the same time. Parse the status bit-fields using the definitions in this enum to determine driver status

Enumerator
JPEG_DECODE_STATUS_FREE	JPEG codec module is not yet open.
JPEG_DECODE_STATUS_IDLE	JPEG Codec module is open, and is not operational.
JPEG_DECODE_STATUS_RUNNING	JPEG Codec is running.
JPEG_DECODE_STATUS_DONE	JPEG Codec has successfully finished the operation.
JPEG_DECODE_STATUS_INPUT_PAUSE	JPEG Codec paused waiting for more input data.
JPEG_DECODE_STATUS_OUTPUT_PAUSE	JPEG Codec paused after decoded the number of lines specified by user.
JPEG_DECODE_STATUS_IMAGE_SIZE_READY	JPEG decoding operation obtained image size, and paused.
JPEG_DECODE_STATUS_ERROR	JPEG Codec module encountered an error.
JPEG_DECODE_STATUS_HEADER_PROCESSING	JPEG Codec module is reading the JPEG header information.

◆ jpeg_decode_subsample_t

enum jpeg_decode_subsample_t

Data type for horizontal and vertical subsample settings. This setting applies only to the decoding operation.

Enumerator
JPEG_DECODE_OUTPUT_NO_SUBSAMPLE	No subsample. The image is decoded with no reduction in size.
JPEG_DECODE_OUTPUT_SUBSAMPLE_HALF	The output image size is reduced by half.
JPEG_DECODE_OUTPUT_SUBSAMPLE_ONE_QUARTER	The output image size is reduced to one-quarter.
JPEG_DECODE_OUTPUT_SUBSAMPLE_ONE_EIGHTH	The output image size is reduced to one-eighth.

Data Structures

Macros

Typedefs

Enumerations