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simplified_jpeg_encoder.c
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simplified_jpeg_encoder.c
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/***************************************************************************#
# simplified_jpeg_encoder: library to encode a jpeg frame #
# from various input palette. #
# simplified_jpeg_encoder works for embedded device without libjpeg #
#. #
# Copyright (C) 2010 Vladimir S. Fonov #
# Based on jpegenc code from Michel Xhaard Copyright (C) 2005 #
#
# This program is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the Free Software #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
# CREDIT: #
# Original code from Nitin Gupta India (?) #
# #
#***************************************************************************/
#include "simplified_jpeg_encoder.h"
#include <malloc.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <string.h>
#pragma pack(push,1)
typedef struct S_JPEG_RGB16 {
unsigned short blue:5;
unsigned short green:6;
unsigned short red:5;
} S_JPEG_RGB16;
typedef struct S_JPEG_RGB24 {
unsigned char blue;
unsigned char green;
unsigned char red;
} S_JPEG_RGB24;
typedef struct S_JPEG_RGB32 {
unsigned char blue;
unsigned char green;
unsigned char red;
unsigned char alpha;
} S_JPEG_RGB32;
#pragma pack(pop)
//Quantize interface
INLINE void initialize_quantization_tables(S_JPEG_ENCODER_STRUCTURE * jpeg,uint32_t);
INLINE void quantization(S_JPEG_ENCODER_STRUCTURE * jpeg,S_INT *data, const S_UINT * quant);
INLINE S_UINT Q15_Division_Integer(uint32_t numer, uint32_t denom);
//markers
uint8_t * write_markers(S_JPEG_ENCODER_STRUCTURE *enc,
uint8_t * output_ptr,
uint32_t image_format,
uint32_t image_width,
uint32_t image_height);
typedef enum COMPONENT_tag { COMPONENT_Y=1,COMPONENT_CB=2,COMPONENT_CR=3} COMPONENT;
// huffman
S_PIXEL * huffman(S_JPEG_ENCODER_STRUCTURE *, COMPONENT, S_PIXEL *);
S_PIXEL * close_bitstream(S_JPEG_ENCODER_STRUCTURE *,S_PIXEL *);
static void read_YCbCr400(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col);
static void read_YCbCr420(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col);
static void read_YCbCr422(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col);
static void read_YCbCr444(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col);
static void read_YCbCr420p(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col);
static void read_YCbCr422p(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col);
static void DCT(S_INT * data);
static void initialization(S_JPEG_ENCODER_STRUCTURE * jpeg,
uint32_t image_format,
uint32_t image_width, uint32_t image_height);
static S_PIXEL *encodeMCU(S_JPEG_ENCODER_STRUCTURE * enc,
uint32_t image_format, S_PIXEL * output_ptr);
S_UINT luminance_dc_code_table[] = {
0x0000, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x000E, 0x001E, 0x003E,
0x007E, 0x00FE, 0x01FE
};
S_UINT luminance_dc_size_table[] = {
0x0002, 0x0003, 0x0003, 0x0003, 0x0003, 0x0003, 0x0004, 0x0005, 0x0006,
0x0007, 0x0008, 0x0009
};
S_UINT chrominance_dc_code_table[] = {
0x0000, 0x0001, 0x0002, 0x0006, 0x000E, 0x001E, 0x003E, 0x007E, 0x00FE,
0x01FE, 0x03FE, 0x07FE
};
S_UINT chrominance_dc_size_table[] = {
0x0002, 0x0002, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008,
0x0009, 0x000A, 0x000B
};
S_UINT luminance_ac_code_table[] = {
0x000A, 0x0000, 0x0001, 0x0004, 0x000B, 0x001A, 0x0078, 0x00F8, 0x03F6,
0xFF82, 0xFF83, 0x000C, 0x001B, 0x0079, 0x01F6, 0x07F6, 0xFF84, 0xFF85,
0xFF86, 0xFF87, 0xFF88, 0x001C, 0x00F9, 0x03F7, 0x0FF4, 0xFF89, 0xFF8A,
0xFF8b, 0xFF8C, 0xFF8D, 0xFF8E, 0x003A, 0x01F7, 0x0FF5, 0xFF8F, 0xFF90,
0xFF91, 0xFF92, 0xFF93, 0xFF94, 0xFF95, 0x003B, 0x03F8, 0xFF96, 0xFF97,
0xFF98, 0xFF99, 0xFF9A, 0xFF9B, 0xFF9C, 0xFF9D, 0x007A, 0x07F7, 0xFF9E,
0xFF9F, 0xFFA0, 0xFFA1, 0xFFA2, 0xFFA3, 0xFFA4, 0xFFA5, 0x007B, 0x0FF6,
0xFFA6, 0xFFA7, 0xFFA8, 0xFFA9, 0xFFAA, 0xFFAB, 0xFFAC, 0xFFAD, 0x00FA,
0x0FF7, 0xFFAE, 0xFFAF, 0xFFB0, 0xFFB1, 0xFFB2, 0xFFB3, 0xFFB4, 0xFFB5,
0x01F8, 0x7FC0, 0xFFB6, 0xFFB7, 0xFFB8, 0xFFB9, 0xFFBA, 0xFFBB, 0xFFBC,
0xFFBD, 0x01F9, 0xFFBE, 0xFFBF, 0xFFC0, 0xFFC1, 0xFFC2, 0xFFC3, 0xFFC4,
0xFFC5, 0xFFC6, 0x01FA, 0xFFC7, 0xFFC8, 0xFFC9, 0xFFCA, 0xFFCB, 0xFFCC,
0xFFCD, 0xFFCE, 0xFFCF, 0x03F9, 0xFFD0, 0xFFD1, 0xFFD2, 0xFFD3, 0xFFD4,
0xFFD5, 0xFFD6, 0xFFD7, 0xFFD8, 0x03FA, 0xFFD9, 0xFFDA, 0xFFDB, 0xFFDC,
0xFFDD, 0xFFDE, 0xFFDF, 0xFFE0, 0xFFE1, 0x07F8, 0xFFE2, 0xFFE3, 0xFFE4,
0xFFE5, 0xFFE6, 0xFFE7, 0xFFE8, 0xFFE9, 0xFFEA, 0xFFEB, 0xFFEC, 0xFFED,
0xFFEE, 0xFFEF, 0xFFF0, 0xFFF1, 0xFFF2, 0xFFF3, 0xFFF4, 0xFFF5, 0xFFF6,
0xFFF7, 0xFFF8, 0xFFF9, 0xFFFA, 0xFFFB, 0xFFFC, 0xFFFD, 0xFFFE,
0x07F9
};
S_UINT luminance_ac_size_table[] = {
0x0004, 0x0002, 0x0002, 0x0003, 0x0004, 0x0005, 0x0007, 0x0008, 0x000A,
0x0010, 0x0010, 0x0004, 0x0005, 0x0007, 0x0009, 0x000B, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0005, 0x0008, 0x000A, 0x000C, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0006, 0x0009, 0x000C, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0006, 0x000A, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0007, 0x000B, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0007, 0x000C,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0008,
0x000C, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0009, 0x000F, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0009, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0009, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x000A, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x000A, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x000B, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x000B
};
S_UINT chrominance_ac_code_table[] = {
0x0000, 0x0001, 0x0004, 0x000A, 0x0018, 0x0019, 0x0038, 0x0078, 0x01F4,
0x03F6, 0x0FF4, 0x000B, 0x0039, 0x00F6, 0x01F5, 0x07F6, 0x0FF5, 0xFF88,
0xFF89, 0xFF8A, 0xFF8B, 0x001A, 0x00F7, 0x03F7, 0x0FF6, 0x7FC2, 0xFF8C,
0xFF8D, 0xFF8E, 0xFF8F, 0xFF90, 0x001B, 0x00F8, 0x03F8, 0x0FF7, 0xFF91,
0xFF92, 0xFF93, 0xFF94, 0xFF95, 0xFF96, 0x003A, 0x01F6, 0xFF97, 0xFF98,
0xFF99, 0xFF9A, 0xFF9B, 0xFF9C, 0xFF9D, 0xFF9E, 0x003B, 0x03F9, 0xFF9F,
0xFFA0, 0xFFA1, 0xFFA2, 0xFFA3, 0xFFA4, 0xFFA5, 0xFFA6, 0x0079, 0x07F7,
0xFFA7, 0xFFA8, 0xFFA9, 0xFFAA, 0xFFAB, 0xFFAC, 0xFFAD, 0xFFAE, 0x007A,
0x07F8, 0xFFAF, 0xFFB0, 0xFFB1, 0xFFB2, 0xFFB3, 0xFFB4, 0xFFB5, 0xFFB6,
0x00F9, 0xFFB7, 0xFFB8, 0xFFB9, 0xFFBA, 0xFFBB, 0xFFBC, 0xFFBD, 0xFFBE,
0xFFBF, 0x01F7, 0xFFC0, 0xFFC1, 0xFFC2, 0xFFC3, 0xFFC4, 0xFFC5, 0xFFC6,
0xFFC7, 0xFFC8, 0x01F8, 0xFFC9, 0xFFCA, 0xFFCB, 0xFFCC, 0xFFCD, 0xFFCE,
0xFFCF, 0xFFD0, 0xFFD1, 0x01F9, 0xFFD2, 0xFFD3, 0xFFD4, 0xFFD5, 0xFFD6,
0xFFD7, 0xFFD8, 0xFFD9, 0xFFDA, 0x01FA, 0xFFDB, 0xFFDC, 0xFFDD, 0xFFDE,
0xFFDF, 0xFFE0, 0xFFE1, 0xFFE2, 0xFFE3, 0x07F9, 0xFFE4, 0xFFE5, 0xFFE6,
0xFFE7, 0xFFE8, 0xFFE9, 0xFFEA, 0xFFEb, 0xFFEC, 0x3FE0, 0xFFED, 0xFFEE,
0xFFEF, 0xFFF0, 0xFFF1, 0xFFF2, 0xFFF3, 0xFFF4, 0xFFF5, 0x7FC3, 0xFFF6,
0xFFF7, 0xFFF8, 0xFFF9, 0xFFFA, 0xFFFB, 0xFFFC, 0xFFFD, 0xFFFE,
0x03FA
};
S_UINT chrominance_ac_size_table[] = {
0x0002, 0x0002, 0x0003, 0x0004, 0x0005, 0x0005, 0x0006, 0x0007, 0x0009,
0x000A, 0x000C, 0x0004, 0x0006, 0x0008, 0x0009, 0x000B, 0x000C, 0x0010,
0x0010, 0x0010, 0x0010, 0x0005, 0x0008, 0x000A, 0x000C, 0x000F, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0005, 0x0008, 0x000A, 0x000C, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0006, 0x0009, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0006, 0x000A, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0007, 0x000B,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0007,
0x000B, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0008, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0009, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0009, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0009, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0009, 0x0010, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x000B, 0x0010, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x000E, 0x0010, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x000F, 0x0010,
0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010, 0x0010,
0x000A
};
S_UINT bitsize[] = {
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8
};
static uint16_t markerdata[] = {
// dht
0xFFC4, 0x1A2, 0x00,
// luminance dc (2 - 16) + 1
0x0105, 0x0101, 0x00101, 0x0101, 0x0000, 0x00000, 00000, 00000,
// luminance dc (2 - 12) + 1
0x0102, 0x0304, 0x0506, 0x0708, 0x090A, 0x0B01,
// chrominance dc (1 - 16)
0x0003, 0x0101, 0x0101, 0x0101, 0x0101, 0x0100, 0x0000, 0x0000,
// chrominance dc (1 - 12)
0x0001, 0x00203, 0x0405, 0x0607, 0x0809, 0x00A0B,
// luminance ac 1 + (1 - 15)
0x1000, 0x0201, 0x0303, 0x0204, 0x0305, 0x0504, 0x0400, 0x0001,
// luminance ac 1 + (1 - 162) + 1
0x7D01, 0x0203, 0x0004, 0x1105, 0x1221, 0x3141, 0x0613, 0x5161, 0x0722,
0x7114, 0x3281, 0x91A1, 0x0823, 0x42B1, 0xC115, 0x52D1, 0xF024, 0x3362,
0x7282, 0x090A, 0x1617, 0x1819, 0x1A25, 0x2627, 0x2829, 0x2A34, 0x3536,
0x3738, 0x393A, 0x4344, 0x4546, 0x4748, 0x494A, 0x5354, 0x5556, 0x5758,
0x595A, 0x6364, 0x6566, 0x6768, 0x696A, 0x7374, 0x7576, 0x7778, 0x797A,
0x8384, 0x8586, 0x8788, 0x898A, 0x9293, 0x9495, 0x9697, 0x9899, 0x9AA2,
0xA3A4, 0xA5A6, 0xA7A8, 0xA9AA, 0xB2B3, 0xB4B5, 0xB6B7, 0xB8B9, 0xBAC2,
0xC3C4, 0xC5C6, 0xC7C8, 0xC9CA, 0xD2D3, 0xD4D5, 0xD6D7, 0xD8D9, 0xDAE1,
0xE2E3, 0xE4E5, 0xE6E7, 0xE8E9, 0xEAF1, 0xF2F3, 0xF4F5, 0xF6F7, 0xF8F9,
0xFA11,
// chrominance ac (1 - 16)
0x0002, 0x0102, 0x0404, 0x0304, 0x0705, 0x0404, 0x0001, 0x0277,
// chrominance ac (1 - 162)
0x0001, 0x0203, 0x1104, 0x0521, 0x3106, 0x1241, 0x5107, 0x6171, 0x1322,
0x3281, 0x0814, 0x4291, 0xA1B1, 0xC109, 0x2333, 0x52F0, 0x1562, 0x72D1,
0x0A16, 0x2434, 0xE125, 0xF117, 0x1819, 0x1A26, 0x2728, 0x292A, 0x3536,
0x3738, 0x393A, 0x4344, 0x4546, 0x4748, 0x494A, 0x5354, 0x5556, 0x5758,
0x595A, 0x6364, 0x6566, 0x6768, 0x696A, 0x7374, 0x7576, 0x7778, 0x797A,
0x8283, 0x8485, 0x8687, 0x8889, 0x8A92, 0x9394, 0x9596, 0x9798, 0x999A,
0xA2A3, 0xA4A5, 0xA6A7, 0xA8A9, 0xAAB2, 0xB3B4, 0xB5B6, 0xB7B8, 0xB9BA,
0xC2C3, 0xC4C5, 0xC6C7, 0xC8C9, 0xCAD2, 0xD3D4, 0xD5D6, 0xD7D8, 0xD9DA,
0xE2E3, 0xE4E5, 0xE6E7, 0xE8E9, 0xEAF2, 0xF3F4, 0xF5F6, 0xF7F8, 0xF9FA
};
static S_UINT zigzag_table[] = {
0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17,
25, 30, 41, 43, 9, 11, 18, 24, 31, 40, 44, 53, 10, 19, 23, 32, 39, 45, 52,
54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, 35, 36,
48, 49, 57, 58, 62, 63
};
/* This function implements 16 Step division for Q.15 format data */
/* and taking integer part */
INLINE S_UINT Q15_Division_Integer (uint32_t numer, uint32_t denom)
{
/*
int i;
denom <<= 15;
for (i = 16; i > 0; i--)
{
if (numer > denom)
{
numer -= denom;
numer <<= 1;
numer++;
} else
numer <<= 1;
}
return (uint16_t) numer;
*/
//numer<<=15;
numer/=denom;
return (S_UINT) numer;
}
/* Multiply Quantization table with quality factor to get LQT and CQT */
INLINE void initialize_quantization_tables(S_JPEG_ENCODER_STRUCTURE * jpeg,uint32_t quality_factor)
{
S_INT i, index;
uint32_t value;
uint8_t luminance_quant_table[] = {
16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13,
16, 24, 40, 57, 69, 56, 14, 17, 22, 29, 51, 87, 80, 62, 18, 22, 37,
56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, 49, 64, 78,
87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99
};
uint8_t chrominance_quant_table[] = {
17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26,
56, 99, 99, 99, 99, 99, 47, 66, 99, 99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99
};
for (i = 0; i < S_BLOCK_SIZE; i++)
{
index = zigzag_table[i];
/* luminance quantization table * quality factor */
value = luminance_quant_table[i] * quality_factor;
value = (value + 0x200) >> 10;
if (value == 0)
value = 1;
else if (value > 255)
value = 255;
jpeg->Lqt[index] = (uint8_t) value;
jpeg->ILqt[i] = (S_UINT)Q15_Division_Integer(0x8000, value);
/* chrominance quantization table * quality factor */
value = chrominance_quant_table[i] * quality_factor;
value = (value + 0x200) >> 10;
if (value == 0)
value = 1;
else if (value > 255)
value = 255;
jpeg->Cqt[index] = (uint8_t) value;
jpeg->ICqt[i] = (S_UINT)Q15_Division_Integer(0x8000, value);
}
}
/* multiply DCT Coefficients with Quantization table and store in ZigZag location */
INLINE void quantization(S_JPEG_ENCODER_STRUCTURE * jpeg, S_INT* data, const S_UINT* quant_table)
{
S_UINT i;
int32_t value;
for (i = 0; i <S_BLOCK_SIZE; i++)
{
value = data[i] * quant_table[i];
value = (value + 0x4000) >> 15;
jpeg->Temp[zigzag_table[i]] = (S_INT) value;
}
}
static void initialization(S_JPEG_ENCODER_STRUCTURE * jpeg,
uint32_t image_format,
uint32_t image_width, uint32_t image_height)
{
S_UINT mcu_width=8, mcu_height=8, bytes_per_pixel=1;
jpeg->lcode = 0;
jpeg->bitindex = 0;
switch(image_format)
{
case FORMAT_CbCr400:
jpeg->mcu_width = mcu_width = 8;
jpeg->mcu_height = mcu_height = 8;
jpeg->horizontal_mcus = (S_UINT)((image_width + mcu_width - 1) >> 3);
jpeg->vertical_mcus = (S_UINT)((image_height + mcu_height - 1) >> 3);
bytes_per_pixel = 1;
jpeg->read_format = read_YCbCr400;
break;
case FORMAT_CbCr444:
jpeg->mcu_width = mcu_width = 8;
jpeg->mcu_height = mcu_height = 8;
jpeg->horizontal_mcus = (S_UINT)((image_width + mcu_width - 1) >> 3);
jpeg->vertical_mcus = (S_UINT)((image_height + mcu_height - 1) >> 3);
bytes_per_pixel = 3;
jpeg->read_format = read_YCbCr444;
break;
case FORMAT_CbCr420:
jpeg->mcu_width = mcu_width = 16;
jpeg->horizontal_mcus = (S_UINT)((image_width + mcu_width - 1) >> 4);
jpeg->mcu_height = mcu_height = 16;
jpeg->vertical_mcus = (S_UINT)((image_height + mcu_height - 1) >> 4);
bytes_per_pixel = 3;
jpeg->read_format = read_YCbCr420;
break;
case FORMAT_CbCr420p://TODO: finish this
jpeg->mcu_width = mcu_width = 16;
jpeg->horizontal_mcus = (S_UINT)((image_width + mcu_width - 1) >> 4);
jpeg->mcu_height = mcu_height = 16;
jpeg->vertical_mcus = (S_UINT)((image_height + mcu_height - 1) >> 4);
bytes_per_pixel = 3;
jpeg->read_format = read_YCbCr420p;
break;
case FORMAT_CbCr422:
jpeg->mcu_width = mcu_width = 16;
jpeg->horizontal_mcus = (S_UINT)((image_width + mcu_width - 1) >> 4);
jpeg->mcu_height = mcu_height = 8;
jpeg->vertical_mcus = (S_UINT)((image_height + mcu_height - 1) >> 3);
bytes_per_pixel = 2;
jpeg->read_format = read_YCbCr422;
break;
case FORMAT_CbCr422p:
//printf("Format CbCr422p\n");
jpeg->mcu_width = mcu_width = 16;
jpeg->horizontal_mcus = (S_UINT)((image_width + mcu_width - 1) >> 4);
jpeg->mcu_height = mcu_height = 8;
jpeg->vertical_mcus = (S_UINT)((image_height + mcu_height - 1) >> 3);
bytes_per_pixel = 1;
jpeg->read_format = read_YCbCr422p;
jpeg->CbOffset= image_width*image_height;
jpeg->CrOffset= image_width*image_height+image_width*image_height/2;
break;
}
jpeg->rows_in_bottom_mcus = (S_UINT)(image_height - (jpeg->vertical_mcus - 1) * mcu_height);
jpeg->cols_in_right_mcus = (S_UINT)(image_width - (jpeg->horizontal_mcus - 1) * mcu_width);
jpeg->length_minus_mcu_width = (S_UINT)((image_width - mcu_width) * bytes_per_pixel);
jpeg->length_minus_width = (S_UINT)((image_width - jpeg->cols_in_right_mcus) * bytes_per_pixel);
jpeg->mcu_width_size = (S_UINT)(mcu_width * bytes_per_pixel);
if (image_format == FORMAT_CbCr420 || image_format == FORMAT_CbCr420p)
{
jpeg->mcu_line_offset = (S_UINT)((image_width * ((mcu_height >> 1) - 1) -
(mcu_width - jpeg->cols_in_right_mcus)) * bytes_per_pixel);
jpeg->mcu_height_size = (S_UINT)(image_width * mcu_height/2 * bytes_per_pixel);
}
else
{
jpeg->mcu_line_offset = (S_UINT)((image_width * (mcu_height - 1) -
(mcu_width - jpeg->cols_in_right_mcus)) * bytes_per_pixel);
jpeg->mcu_height_size = (S_UINT)(image_width * mcu_height * bytes_per_pixel);
}
//printf("mcu_height_size=%d,mcu_width_size=%d\n",jpeg->mcu_height_size,jpeg->mcu_width_size);
jpeg->ldc1 = 0;
jpeg->ldc2 = 0;
jpeg->ldc3 = 0;
}
uint32_t s_encode_image(uint8_t * input_ptr, uint8_t * output_ptr,
uint32_t quality_factor, int image_format,
uint32_t image_width, uint32_t image_height,
uint32_t output_buffer_size)
{
S_UINT i, j;
S_UINT last_col;
S_UINT last_row;
uint8_t * output;
S_JPEG_ENCODER_STRUCTURE JpegStruct;
S_JPEG_ENCODER_STRUCTURE * enc = &JpegStruct;
/*(S_JPEG_ENCODER_STRUCTURE *)malloc(sizeof(S_JPEG_ENCODER_STRUCTURE));
memset(enc,0,sizeof(S_JPEG_ENCODER_STRUCTURE));*/
output = output_ptr;
/* Initialization of JPEG control structure */
initialization(enc, image_format, image_width, image_height);
/* Quantization Table Initialization */
initialize_quantization_tables(enc,quality_factor);
/* Writing Marker Data */
output_ptr = write_markers(enc,output_ptr, image_format, image_width, image_height);
last_row=enc->vertical_mcus-1;
last_col=enc->horizontal_mcus-1;
for (i = 0; i < enc->vertical_mcus; i++)
{
if (i < last_row)
enc->rows = enc->mcu_height;
else
enc->rows = enc->rows_in_bottom_mcus;
for (j = 0; j < enc->horizontal_mcus; j++)
{
if (j < last_col)
{
enc->cols = enc->mcu_width;
enc->scan_line_incr = enc->length_minus_mcu_width;
} else {
enc->cols = enc->cols_in_right_mcus;
enc->scan_line_incr = enc->length_minus_width;
}
enc->read_format(enc, input_ptr,i,j);
/* Encode the data in MCU */
output_ptr = encodeMCU(enc, image_format, output_ptr);
//input_ptr += enc->mcu_width_size;
}
//input_ptr += enc->mcu_line_offset;
}
/* Close Routine */
output_ptr = close_bitstream(enc,output_ptr);
//free(enc);
return (uint32_t)(output_ptr - output);
}
static uint8_t *encodeMCU(S_JPEG_ENCODER_STRUCTURE * enc,
uint32_t image_format, uint8_t * output_ptr)
{
DCT(enc->Y1);
quantization(enc,enc->Y1, enc->ILqt);
output_ptr = huffman(enc, COMPONENT_Y, output_ptr);
if (image_format == FORMAT_CbCr400)
return output_ptr;
DCT(enc->Y2);
quantization(enc,enc->Y2, enc->ILqt);
output_ptr = huffman(enc, COMPONENT_Y, output_ptr);
if (image_format == FORMAT_CbCr422 || image_format == FORMAT_CbCr422p)
goto chroma;
DCT(enc->Y3);
quantization(enc,enc->Y3, enc->ILqt);
output_ptr = huffman(enc, COMPONENT_Y, output_ptr);
DCT(enc->Y4);
quantization(enc,enc->Y4, enc->ILqt);
output_ptr = huffman(enc, COMPONENT_Y, output_ptr);
chroma:DCT(enc->CB);
quantization(enc,enc->CB, enc->ICqt);
output_ptr = huffman(enc, COMPONENT_CB, output_ptr);
DCT(enc->CR);
quantization(enc,enc->CR, enc->ICqt);
output_ptr = huffman(enc, COMPONENT_CR, output_ptr);
return output_ptr;
}
/* DCT for One block(8x8) */
static void DCT(S_INT * data)
{
S_UINT i;
int32_t x0, x1, x2, x3, x4, x5, x6, x7, x8;
/* All values are shifted left by 10
and rounded off to nearest integer */
static const uint16_t c1 = 1420; /* cos PI/16 * root(2) */
static const uint16_t c2 = 1338; /* cos PI/8 * root(2) */
static const uint16_t c3 = 1204; /* cos 3PI/16 * root(2) */
static const uint16_t c5 = 805; /* cos 5PI/16 * root(2) */
static const uint16_t c6 = 554; /* cos 3PI/8 * root(2) */
static const uint16_t c7 = 283; /* cos 7PI/16 * root(2) */
static const uint16_t s1 = 3;
static const uint16_t s2 = 10;
static const uint16_t s3 = 13;
for (i = 0; i < 8; i++)
{
x8 = data[0] + data[7];
x0 = data[0] - data[7];
x7 = data[1] + data[6];
x1 = data[1] - data[6];
x6 = data[2] + data[5];
x2 = data[2] - data[5];
x5 = data[3] + data[4];
x3 = data[3] - data[4];
x4 = x8 + x5;
x8 -= x5;
x5 = x7 + x6;
x7 -= x6;
data[0] = (S_INT)(x4 + x5);
data[4] = (S_INT)(x4 - x5);
data[2] = (S_INT)((x8 * c2 + x7 * c6) >> s2);
data[6] = (S_INT)((x8 * c6 - x7 * c2) >> s2);
data[7] = (S_INT)((x0 * c7 - x1 * c5 + x2 * c3 - x3 * c1) >> s2);
data[5] = (S_INT)((x0 * c5 - x1 * c1 + x2 * c7 + x3 * c3) >> s2);
data[3] = (S_INT)((x0 * c3 - x1 * c7 - x2 * c1 - x3 * c5) >> s2);
data[1] = (S_INT)((x0 * c1 + x1 * c3 + x2 * c5 + x3 * c7) >> s2);
data += 8;
}
data -= 64;
for (i = 0; i <8; i++)
{
x8 = data[0] + data[56];
x0 = data[0] - data[56];
x7 = data[8] + data[48];
x1 = data[8] - data[48];
x6 = data[16] + data[40];
x2 = data[16] - data[40];
x5 = data[24] + data[32];
x3 = data[24] - data[32];
x4 = x8 + x5;
x8 -= x5;
x5 = x7 + x6;
x7 -= x6;
data[0] = (S_INT)((x4 + x5) >> s1);
data[32] = (S_INT)((x4 - x5) >> s1);
data[16] = (S_INT)((x8 * c2 + x7 * c6) >> s3);
data[48] = (S_INT)((x8 * c6 - x7 * c2) >> s3);
data[56] = (S_INT)((x0 * c7 - x1 * c5 + x2 * c3 - x3 * c1) >> s3);
data[40] = (S_INT)((x0 * c5 - x1 * c1 + x2 * c7 + x3 * c3) >> s3);
data[24] = (S_INT)((x0 * c3 - x1 * c7 - x2 * c1 - x3 * c5) >> s3);
data[8] = (S_INT)((x0 * c1 + x1 * c3 + x2 * c5 + x3 * c7) >> s3);
data++;
}
}
static void read_YCbCr400(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col)
{
uint8_t * input_ptr=input_ptr_+row*enc->mcu_height_size+col*enc->mcu_width_size;
S_INT i, j;
S_INT *Y1_Ptr = enc->Y1;
S_UINT rows = enc->rows;
S_UINT cols = enc->cols;
S_UINT scan_line_incr = enc->scan_line_incr;
for (i = rows; i > 0; i--)
{
for (j = cols; j > 0; j--)
*Y1_Ptr++ = *input_ptr++ - 128;
for (j = 8 - cols; j > 0; j--)
{*Y1_Ptr = *(Y1_Ptr - 1);Y1_Ptr++;}
input_ptr += scan_line_incr;
}
for (i = 8 - rows; i > 0; i--)
{
for (j = 8; j > 0; j--)
{*Y1_Ptr = *(Y1_Ptr - 8); Y1_Ptr++;}
}
}
static void read_YCbCr420(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col)
{
uint8_t * input_ptr=input_ptr_+ row*enc->mcu_height_size + col*enc->mcu_width_size;
//printf("read_YCbCr420: %p \n",input_ptr);
S_UINT i, j;
S_UINT Y1_rows, Y3_rows, Y1_cols, Y2_cols;
S_INT * Y1_Ptr = enc->Y1;
S_INT * Y2_Ptr = enc->Y2;
S_INT * Y3_Ptr = enc->Y3;
S_INT * Y4_Ptr = enc->Y4;
S_INT * CB_Ptr = enc->CB;
S_INT * CR_Ptr = enc->CR;
S_INT * Y1Ptr = enc->Y1 + 8;
S_INT * Y2Ptr = enc->Y2 + 8;
S_INT * Y3Ptr = enc->Y3 + 8;
S_INT * Y4Ptr = enc->Y4 + 8;
S_UINT rows = enc->rows;
S_UINT cols = enc->cols;
S_UINT scan_line_incr = enc->scan_line_incr;
if (rows <= 8)
{
Y1_rows = rows;
Y3_rows = 0;
} else {
Y1_rows = 8;
Y3_rows = (S_UINT)(rows - 8);
}
if (cols <= 8)
{
Y1_cols = cols;
Y2_cols = 0;
} else {
Y1_cols = 8;
Y2_cols = (S_UINT)(cols - 8);
}
for (i = Y1_rows >> 1; i > 0; i--)
{
for (j = Y1_cols >> 1; j > 0; j--)
{
*Y1_Ptr++ = *input_ptr++ - 128;
*Y1_Ptr++ = *input_ptr++ - 128;
*Y1Ptr++ = *input_ptr++ - 128;
*Y1Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
for (j = Y2_cols >> 1; j > 0; j--)
{
*Y2_Ptr++ = *input_ptr++ - 128;
*Y2_Ptr++ = *input_ptr++ - 128;
*Y2Ptr++ = *input_ptr++ - 128;
*Y2Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
if (cols <= 8)
{
for (j = 8 - Y1_cols; j > 0; j--)
{
*Y1_Ptr = *(Y1_Ptr - 1);
Y1_Ptr++;
*Y1Ptr = *(Y1Ptr - 1);
Y1Ptr++;
}
for (j = 8; j > 0; j--)
{
*Y2_Ptr++ = *(Y1_Ptr - 1);
*Y2Ptr++ = *(Y1Ptr - 1);
}
} else {
for (j = 8 - Y2_cols; j > 0; j--)
{
*Y2_Ptr = *(Y2_Ptr - 1);
Y2_Ptr++;
*Y2Ptr = *(Y2Ptr - 1);
Y2Ptr++;
}
}
for (j = (16 - cols) >> 1; j > 0; j--)
{
*CB_Ptr = *(CB_Ptr - 1);
CB_Ptr++;
*CR_Ptr = *(CR_Ptr - 1);
CR_Ptr++;
}
Y1_Ptr += 8;
Y2_Ptr += 8;
Y1Ptr += 8;
Y2Ptr += 8;
input_ptr += scan_line_incr;
}
for (i = Y3_rows >> 1; i > 0; i--)
{
for (j = Y1_cols >> 1; j > 0; j--)
{
*Y3_Ptr++ = *input_ptr++ - 128;
*Y3_Ptr++ = *input_ptr++ - 128;
*Y3Ptr++ = *input_ptr++ - 128;
*Y3Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
for (j = Y2_cols >> 1; j > 0; j--)
{
*Y4_Ptr++ = *input_ptr++ - 128;
*Y4_Ptr++ = *input_ptr++ - 128;
*Y4Ptr++ = *input_ptr++ - 128;
*Y4Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
if (cols <= 8)
{
for (j = 8 - Y1_cols; j > 0; j--)
{
*Y3_Ptr = *(Y3_Ptr - 1);
Y3_Ptr++;
*Y3Ptr = *(Y3Ptr - 1);
Y3Ptr++;
}
for (j = 8; j > 0; j--)
{
*Y4_Ptr++ = *(Y3_Ptr - 1);
*Y4Ptr++ = *(Y3Ptr - 1);
}
} else {
for (j = 8 - Y2_cols; j > 0; j--)
{
*Y4_Ptr = *(Y4_Ptr - 1);
Y4_Ptr++;
*Y4Ptr = *(Y4Ptr - 1);
Y4Ptr++;
}
}
for (j = (16 - cols) >> 1; j > 0; j--)
{
*CB_Ptr = *(CB_Ptr - 1);
CB_Ptr++;
*CR_Ptr = *(CR_Ptr - 1);
CR_Ptr++;
}
Y3_Ptr += 8;
Y4_Ptr += 8;
Y3Ptr += 8;
Y4Ptr += 8;
input_ptr += scan_line_incr;
}
if (rows <= 8)
{
for (i = 8 - rows; i > 0; i--)
{
for (j = 8; j > 0; j--)
{
*Y1_Ptr = *(Y1_Ptr - 8);
Y1_Ptr++;
*Y2_Ptr = *(Y2_Ptr - 8);
Y2_Ptr++;
}
}
for (i = 8; i > 0; i--)
{
Y1_Ptr -= 8;
Y2_Ptr -= 8;
for (j = 8; j > 0; j--)
{
*Y3_Ptr++ = *Y1_Ptr++;
*Y4_Ptr++ = *Y2_Ptr++;
}
}
} else {
for (i = (16 - rows); i > 0; i--)
{
for (j = 8; j > 0; j--)
{
*Y3_Ptr = *(Y3_Ptr - 8);
Y3_Ptr++;
*Y4_Ptr = *(Y4_Ptr - 8);
Y4_Ptr++;
}
}
}
for (i = ((16 - rows) >> 1); i > 0; i--)
{
for (j = 8; j > 0; j--)
{
*CB_Ptr = *(CB_Ptr - 8);
CB_Ptr++;
*CR_Ptr = *(CR_Ptr - 8);
CR_Ptr++;
}
}
}
static void read_YCbCr420p(S_JPEG_ENCODER_STRUCTURE * enc, uint8_t * input_ptr_,S_UINT row,S_UINT col)//TODO: make this work
{
uint8_t * input_ptr=input_ptr_+row*enc->mcu_height_size+col*enc->mcu_width_size;
S_UINT i, j;
S_UINT Y1_rows, Y3_rows, Y1_cols, Y2_cols;
S_INT * Y1_Ptr = enc->Y1;
S_INT * Y2_Ptr = enc->Y2;
S_INT * Y3_Ptr = enc->Y3;
S_INT * Y4_Ptr = enc->Y4;
S_INT * CB_Ptr = enc->CB;
S_INT * CR_Ptr = enc->CR;
S_INT * Y1Ptr = enc->Y1 + 8;
S_INT * Y2Ptr = enc->Y2 + 8;
S_INT * Y3Ptr = enc->Y3 + 8;
S_INT * Y4Ptr = enc->Y4 + 8;
S_UINT rows = enc->rows;
S_UINT cols = enc->cols;
S_UINT scan_line_incr = enc->scan_line_incr;
if (rows <= 8)
{
Y1_rows = rows;
Y3_rows = 0;
} else {
Y1_rows = 8;
Y3_rows = (uint16_t)(rows - 8);
}
if (cols <= 8)
{
Y1_cols = cols;
Y2_cols = 0;
} else {
Y1_cols = 8;
Y2_cols = (uint16_t)(cols - 8);
}
for (i = Y1_rows >> 1; i > 0; i--)
{
for (j = Y1_cols >> 1; j > 0; j--)
{
*Y1_Ptr++ = *input_ptr++ - 128;
*Y1_Ptr++ = *input_ptr++ - 128;
*Y1Ptr++ = *input_ptr++ - 128;
*Y1Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
for (j = Y2_cols >> 1; j > 0; j--)
{
*Y2_Ptr++ = *input_ptr++ - 128;
*Y2_Ptr++ = *input_ptr++ - 128;
*Y2Ptr++ = *input_ptr++ - 128;
*Y2Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
if (cols <= 8)
{
for (j = 8 - Y1_cols; j > 0; j--)
{
*Y1_Ptr = *(Y1_Ptr - 1);Y1_Ptr++;
*Y1Ptr = *(Y1Ptr - 1);Y1Ptr++;
}
for (j = 8; j > 0; j--)
{
*Y2_Ptr++ = *(Y1_Ptr - 1);
*Y2Ptr++ = *(Y1Ptr - 1);
}
} else {
for (j = 8 - Y2_cols; j > 0; j--)
{
*Y2_Ptr = *(Y2_Ptr - 1);Y2_Ptr++;
*Y2Ptr = *(Y2Ptr - 1);Y2Ptr++;
}
}
for (j = (16 - cols) >> 1; j > 0; j--)
{
*CB_Ptr = *(CB_Ptr - 1);CB_Ptr++;
*CR_Ptr = *(CR_Ptr - 1);CR_Ptr++;
}
Y1_Ptr += 8;
Y2_Ptr += 8;
Y1Ptr += 8;
Y2Ptr += 8;
input_ptr += scan_line_incr;
}
for (i = Y3_rows >> 1; i > 0; i--)
{
for (j = Y1_cols >> 1; j > 0; j--)
{
*Y3_Ptr++ = *input_ptr++ - 128;
*Y3_Ptr++ = *input_ptr++ - 128;
*Y3Ptr++ = *input_ptr++ - 128;
*Y3Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;
}
for (j = Y2_cols >> 1; j > 0; j--)
{
*Y4_Ptr++ = *input_ptr++ - 128;
*Y4_Ptr++ = *input_ptr++ - 128;
*Y4Ptr++ = *input_ptr++ - 128;
*Y4Ptr++ = *input_ptr++ - 128;
*CB_Ptr++ = *input_ptr++ - 128;
*CR_Ptr++ = *input_ptr++ - 128;