jpeg_sw.h

MTK平台绝密核心代码之 多媒体处理

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*  herein is confidential. The software may not be copied and the information
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/*****************************************************************************
 *
 * Filename:
 * ---------
 *   jpeg_sw.h
 *
 * Project:
 * --------
 *   MT6225
 *
 * Description:
 * ------------
 *   This file is intends for jpeg software codec.
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
 * removed!
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 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
 
#if(defined __SW_JPEG_CODEC_SUPPORT__ || !defined(__MTK_TARGET__))
#include "kal_non_specific_general_types.h"

extern kal_int16 std_luminance_quant_tbl[64];
extern kal_int16 std_chrominance_quant_tbl[64]; 
extern kal_int32 fixed_fdct_scale[64];
extern kal_int16 std_luminance_quant_tbl[64];
extern kal_int16 std_chrominance_quant_tbl[64];
extern kal_uint8 dc_luminance_bits[17];
extern kal_uint8 dc_luminance_val[12];
extern kal_uint16 dc_lum_symbol_2_code_tbl[12];
extern kal_uint8 dc_lum_symbol_2_size_tbl[12];
extern kal_uint8 dc_chrominance_bits[17];
extern kal_uint8 dc_chrominance_val[12];
extern kal_uint16 dc_chrom_symbol_2_code_tbl[12];
extern kal_uint8 dc_chrom_symbol_2_size_tbl[12];

extern kal_uint8 ac_luminance_bits[17];
extern kal_uint8 ac_luminance_val[162];
extern kal_uint16 ac_lum_symbol_2_code_tbl[256];
extern kal_uint8 ac_lum_symbol_2_size_tbl[256];
extern kal_uint8 ac_chrominance_bits[17];
extern kal_uint8 ac_chrominance_val[162];
extern kal_uint16 ac_chrom_symbol_2_code_tbl[256];
extern kal_uint8 ac_chrom_symbol_2_size_tbl[256];
extern kal_uint8 Z_ZAG[64];

#define JPEG_ENCODER_HIGH_QUALITY	0
#define JPEG_ENCODER_GOOD_QUALITY	1
#define JPEG_ENCODER_FAIR_QUALITY	2 /* using default quantization table */
#define JPEG_ENCODER_POOR_QUALITY	3

#define JPEG_FORMAT_GRAY			0
#define JPEG_FORMAT_YUV422			1
#define JPEG_FORMAT_YUV420 			2

#define QUANT_FRACTION_BITS  12	//Used for Quantization table fix point
#define FDCT_FRAC_BIT   11  // fractional bits of cosine coefficient

#define	JPEG_MARKER_SOI		0xD8
#define JPEG_MARKER_SOF0	0xC0
#define JPEG_MARKER_DQT		0xDB
#define JPEG_MARKER_DHT		0xC4
#define JPEG_MARKER_SOS		0xDA
#define JPEG_MARKER_EOI		0xD9

#define JPEG_HUFF_DC_INDEX_0	0x00
#define JPEG_HUFF_DC_INDEX_1	0x01
#define JPEG_HUFF_AC_INDEX_0	0x10
#define JPEG_HUFF_AC_INDEX_1	0x11

typedef kal_int16 JCOEF;

#define JPEG_SW_ENC_REQUIRED_INT_MEM_SIZE 512

typedef struct {
	kal_uint8* bits;
	kal_uint8* huffval;
  
	kal_uint16* ehufco;
	kal_uint8* ehufsi;
	
} HUFF_TBL;

typedef struct
{
 kal_uint8	image_quality;
 kal_uint8	jpeg_yuv_mode;
 
 kal_uint16	image_width;	/* the width of image source */
 kal_uint16	image_height;	/* the height of image source */
 
 kal_uint32 jpeg_file_start_address;		/* the start address for encoded JPEG file */
 kal_uint32 jpeg_file_buffer_size;		/* the maximum size of jpeg file after encode */
 kal_uint32 int_mem_addr;
 kal_uint32 int_mem_size;
 kal_uint8* jpeg_yuv_data[3]; 
 kal_uint32 image_buffer_address;	/* the RGB565 image buffer start address */
}jpeg_sw_encode_process_struct;

typedef struct
{
 kal_uint8  image_quality;
 kal_uint8 num_of_comp;
 kal_uint8 max_h_sample_factor;
 kal_uint8 max_v_sample_factor;

 kal_uint8* jpeg_yuv_data[3];

 kal_uint16 image_width;	/* the width of image source */
 kal_uint16 image_height;	/* the height of image source */
 
 kal_uint16 jpg_encode_width;	/* Encode width after padding */
 kal_uint16 jpg_encode_height;	/* Encode height after padding */
  

 
 kal_uint16 MCUs_per_row;	/* # of MCUs across the image */
 kal_uint16 num_mcu_row;
 
 /* Bellow this line is the info. of each Y,U,V component */ 
 kal_uint16 sample_width[3];
 
 kal_uint8 h_sample_factor[3]; /* sample factor of Y,U,V component */
 kal_uint8 v_sample_factor[3];
 
 kal_uint8 MCU_DU_width[3];	/* number of blocks per MCU, horizontally */
 kal_uint8 MCU_DU_height[3];	/* number of blocks per MCU, vertically */

 /* Bellow this line is the table ptrs and block ptrs */
 kal_int16* 	block;
 kal_int32* 	dct_ptr;
 kal_int16* Quant[2];
 kal_int16* Scaled_Quant[2];
 kal_uint8  q_table_no[3];
 
 kal_uint8 dc_huff_table_no[3],ac_huff_table_no[3];
 HUFF_TBL  dc_huff_table[2],ac_huff_table[2];
 kal_int16 last_dc_val[3];
 
}jpeg_sw_encode_para_struct;

kal_uint32 jpeg_sw_encode_process(jpeg_sw_encode_process_struct *jpeg_encode_para);
void rgb565_2_yuv420(jpeg_sw_encode_process_struct *jpeg_encode_config_data);
#endif