hpm_jpeg_drv.c File Reference

#include "hpm_jpeg_drv.h"

Macros
#define	HPM_JPEG_DEFAULT_MAX_OT   (2)
#define	JPEG_HY(x)   ((x)->hy)
#define	JPEG_VY(x)   ((x)->vy)
#define	JPEG_HC(x)   ((x)->hc)
#define	JPEG_VC(x)   ((x)->vc)
#define	JPEG_TABLE_WIDTH(x)   (((x) & 0xF00000UL) >> 20)
#define	JPEG_TABLE_LENGTH(x)   (((x) & 0xFFFF0UL) >> 4)
#define	JPEG_TABLE_TYPE(x)   (((x) & 0xFUL))
#define	JPEG_TABLE_VALUE_MASK(x)   (((x) == 4) ? (0xFFFFFFFFUL) : (uint32_t) ((1 << ((x) << 3)) - 1))

Functions
void	jpeg_disable_irq (JPEG_Type *ptr, uint32_t mask)
	jpeg disable interrupt More...
void	jpeg_enable_irq (JPEG_Type *ptr, uint32_t mask)
	jpeg enable interrupt More...
void	jpeg_reset (JPEG_Type *ptr)
	stop a encoder/decoder conversion and Software Reset More...
void	jpeg_init (JPEG_Type *ptr)
	stop a encoder/decoder conversion and Software Reset More...
static bool	jpeg_need_csc (jpeg_pixel_format_t format)
static bool	jpeg_is_valid_size (uint8_t format, uint32_t width, uint32_t height)
static uint32_t	jpeg_calculate_macro_block_count (uint32_t width, uint32_t height, jpeg_sampling_t *sampling)
static void	jpeg_config_interal_regs (JPEG_Type *ptr, bool decoding, uint32_t macro_block_count, uint8_t format)
hpm_stat_t	jpeg_start_encode (JPEG_Type *ptr, jpeg_job_config_t *config)
	it will start encoding, and the process status needs to be checked by querying JPEG_EVENT More...
hpm_stat_t	jpeg_start_decode (JPEG_Type *ptr, jpeg_job_config_t *config, uint32_t length)
	it will start decoding, and the process status needs to be checked by querying JPEG_EVENT More...
hpm_stat_t	jpeg_fill_table (JPEG_Type *ptr, jpeg_table_t table, uint8_t *data, uint32_t count)
	fill tables for jpeg controller More...

Variables
const jpeg_sampling_t	jpeg_supported_sampling [5]
const jpeg_pixel_t	jpeg_supported_pixel_format [6]

Macro Definition Documentation

HPM_JPEG_DEFAULT_MAX_OT

#define HPM_JPEG_DEFAULT_MAX_OT   (2)

JPEG_HC

#define JPEG_HC

(

x

)

((x)->hc)

JPEG_HY

#define JPEG_HY

(

x

)

((x)->hy)

JPEG_TABLE_LENGTH

#define JPEG_TABLE_LENGTH

(

x

)

(((x) & 0xFFFF0UL) >> 4)

JPEG_TABLE_TYPE

#define JPEG_TABLE_TYPE

(

x

)

(((x) & 0xFUL))

JPEG_TABLE_VALUE_MASK

#define JPEG_TABLE_VALUE_MASK

(

x

)

(((x) == 4) ? (0xFFFFFFFFUL) : (uint32_t) ((1 << ((x) << 3)) - 1))

JPEG_TABLE_WIDTH

#define JPEG_TABLE_WIDTH

(

x

)

(((x) & 0xF00000UL) >> 20)

JPEG_VC

#define JPEG_VC

(

x

)

((x)->vc)

JPEG_VY

#define JPEG_VY

(

x

)

((x)->vy)

Function Documentation

jpeg_calculate_macro_block_count()

static uint32_t jpeg_calculate_macro_block_count ( uint32_t  width, uint32_t  height, jpeg_sampling_t *  sampling  )

static

jpeg_config_interal_regs()

static void jpeg_config_interal_regs ( JPEG_Type *  ptr, bool  decoding, uint32_t  macro_block_count, uint8_t  format  )

static

jpeg_is_valid_size()

static bool jpeg_is_valid_size ( uint8_t  format, uint32_t  width, uint32_t  height  )

static

jpeg_need_csc()

static bool jpeg_need_csc ( jpeg_pixel_format_t  format )

static

Variable Documentation

jpeg_supported_pixel_format

const jpeg_pixel_t jpeg_supported_pixel_format[6]

Initial value:

= {
    {4, 1, 1, true}, 
    {2, 2, 2, true}, 
    {2, 3, 3, false}, 
    {1, 0, 0, false}, 
}

jpeg_supported_sampling

const jpeg_sampling_t jpeg_supported_sampling[5]

Initial value:

= {
    {2, 2, 1, 1}, 
    {2, 1, 1, 1}, 
    {1, 2, 1, 1}, 
    {1, 1, 1, 1}, 
    {1, 1, 0, 0}, 
}