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jpegenc_utils.h
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/*
* Copyright (c) 2014 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This file is a utilities file which supports JPEG Encode process
*/
#include <sys/types.h>
#include <stdio.h>
#define MAX_JPEG_COMPONENTS 3 //only for Y, U and V
#define JPEG_Y 0
#define JPEG_U 1
#define JPEG_V 2
#define NUM_QUANT_ELEMENTS 64
#define NUM_MAX_HUFFTABLE 2
#define NUM_AC_RUN_SIZE_BITS 16
#define NUM_AC_CODE_WORDS_HUFFVAL 162
#define NUM_DC_RUN_SIZE_BITS 16
#define NUM_DC_CODE_WORDS_HUFFVAL 12
#define BITSTREAM_ALLOCATE_STEPPING 4096
#if 0
struct __bitstream {
unsigned int *buffer;
int bit_offset;
int max_size_in_dword;
};
typedef struct __bitstream bitstream;
static unsigned int
swap32(unsigned int val)
{
unsigned char *pval = (unsigned char *)&val;
return ((pval[0] << 24) |
(pval[1] << 16) |
(pval[2] << 8) |
(pval[3] << 0));
}
static void
bitstream_start(bitstream *bs)
{
bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
bs->buffer = calloc(bs->max_size_in_dword * sizeof(int), 1);
assert(bs->buffer);
bs->bit_offset = 0;
}
static void
bitstream_end(bitstream *bs)
{
int pos = (bs->bit_offset >> 5);
int bit_offset = (bs->bit_offset & 0x1f);
int bit_left = 32 - bit_offset;
if (bit_offset) {
bs->buffer[pos] = swap32((bs->buffer[pos] << bit_left));
}
}
static void
bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
{
int pos = (bs->bit_offset >> 5);
int bit_offset = (bs->bit_offset & 0x1f);
int bit_left = 32 - bit_offset;
if (!size_in_bits)
return;
if (size_in_bits < 32)
val &= ((1 << size_in_bits) - 1);
bs->bit_offset += size_in_bits;
if (bit_left > size_in_bits) {
bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
} else {
size_in_bits -= bit_left;
bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
bs->buffer[pos] = swap32(bs->buffer[pos]);
if (pos + 1 == bs->max_size_in_dword) {
bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
bs->buffer = realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
assert(bs->buffer);
}
bs->buffer[pos + 1] = val;
}
}
#else
#include "bitstream.h"
#endif
//As per Jpeg Spec ISO/IEC 10918-1, below values are assigned
enum jpeg_markers {
//Define JPEG markers as 0xFFXX if you are adding the value directly to the buffer
//Else define marker as 0xXXFF if you are assigning the marker to a structure variable.
//This is needed because of the little-endedness of the IA
SOI = 0xFFD8, //Start of Image
EOI = 0xFFD9, //End of Image
SOS = 0xFFDA, //Start of Scan
DQT = 0xFFDB, //Define Quantization Table
DRI = 0xFFDD, //Define restart interval
RST0 = 0xFFD0, //Restart interval termination
DHT = 0xFFC4, //Huffman table
SOF0 = 0xFFC0, //Baseline DCT
APP0 = 0xFFE0, //Application Segment
COM = 0xFFFE //Comment segment
};
typedef struct _JPEGFrameHeader {
uint16_t SOF; //Start of Frame Header
uint16_t Lf; //Length of Frame Header
uint8_t P; //Sample precision
uint16_t Y; //Number of lines
uint16_t X; //Number of samples per line
uint8_t Nf; //Number of image components in frame
struct _JPEGComponent {
uint8_t Ci; //Component identifier
uint8_t Hi: 4; //Horizontal sampling factor
uint8_t Vi: 4; //Vertical sampling factor
uint8_t Tqi; //Quantization table destination selector
} JPEGComponent[MAX_JPEG_COMPONENTS];
} JPEGFrameHeader;
typedef struct _JPEGScanHeader {
uint16_t SOS; //Start of Scan
uint16_t Ls; //Length of Scan
uint8_t Ns; //Number of image components in the scan
struct _ScanComponent {
uint8_t Csj; //Scan component selector
uint8_t Tdj: 4; //DC Entropy coding table destination selector(Tdj:4 bits)
uint8_t Taj: 4; //AC Entropy coding table destination selector(Taj:4 bits)
} ScanComponent[MAX_JPEG_COMPONENTS];
uint8_t Ss; //Start of spectral or predictor selection, 0 for Baseline
uint8_t Se; //End of spectral or predictor selection, 63 for Baseline
uint8_t Ah: 4; //Successive approximation bit position high, 0 for Baseline
uint8_t Al: 4; //Successive approximation bit position low, 0 for Baseline
} JPEGScanHeader;
typedef struct _JPEGQuantSection {
uint16_t DQT; //Quantization table marker
uint16_t Lq; //Length of Quantization table definition
uint8_t Tq: 4; //Quantization table destination identifier
uint8_t Pq: 4; //Quatization table precision. Should be 0 for 8-bit samples
uint8_t Qk[NUM_QUANT_ELEMENTS]; //Quantization table elements
} JPEGQuantSection;
typedef struct _JPEGHuffSection {
uint16_t DHT; //Huffman table marker
uint16_t Lh; //Huffman table definition length
uint8_t Tc: 4; //Table class- 0:DC, 1:AC
uint8_t Th: 4; //Huffman table destination identifier
uint8_t Li[NUM_AC_RUN_SIZE_BITS]; //Number of Huffman codes of length i
uint8_t Vij[NUM_AC_CODE_WORDS_HUFFVAL]; //Value associated with each Huffman code
} JPEGHuffSection;
typedef struct _JPEGRestartSection {
uint16_t DRI; //Restart interval marker
uint16_t Lr; //Legth of restart interval segment
uint16_t Ri; //Restart interval
} JPEGRestartSection;
typedef struct _JPEGCommentSection {
uint16_t COM; //Comment marker
uint16_t Lc; //Comment segment length
uint8_t Cmi; //Comment byte
} JPEGCommentSection;
typedef struct _JPEGAppSection {
uint16_t APPn; //Application data marker
uint16_t Lp; //Application data segment length
uint8_t Api; //Application data byte
} JPEGAppSection;
//Luminance quantization table
//Source: Jpeg Spec ISO/IEC 10918-1, Annex K, Table K.1
uint8_t jpeg_luma_quant[NUM_QUANT_ELEMENTS] = {
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
};
//Luminance quantization table
//Source: Jpeg Spec ISO/IEC 10918-1, Annex K, Table K.2
uint8_t jpeg_chroma_quant[NUM_QUANT_ELEMENTS] = {
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
};
//Zigzag scan order of the the Luma and Chroma components
//Note: Jpeg Spec ISO/IEC 10918-1, Figure A.6 shows the zigzag order differently.
//The Spec is trying to show the zigzag pattern with number positions. The below
//table will use the patter shown by A.6 and map the postion of the elements in the array
uint8_t jpeg_zigzag[] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34,
27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36,
29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46,
53, 60, 61, 54, 47, 55, 62, 63
};
//Huffman table for Luminance DC Coefficients
//Reference Jpeg Spec ISO/IEC 10918-1, K.3.3.1
//K.3.3.1 is the summarized version of Table K.3
uint8_t jpeg_hufftable_luma_dc[] = {
//TcTh (Tc=0 since 0:DC, 1:AC; Th=0)
0x00,
//Li
0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
//Vi
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B
};
//Huffman table for Chrominance DC Coefficients
//Reference Jpeg Spec ISO/IEC 10918-1, K.3.3.1
//K.3.3.1 is the summarized version of Table K.4
uint8_t jpeg_hufftable_chroma_dc[] = {
//TcTh (Tc=0 since 0:DC, 1:AC; Th=1)
0x01,
//Li
0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
//Vi
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B
};
//Huffman table for Luminance AC Coefficients
//Reference Jpeg Spec ISO/IEC 10918-1, K.3.3.2
//K.3.3.2 is the summarized version of Table K.5
uint8_t jpeg_hufftable_luma_ac[] = {
//TcTh (Tc=1 since 0:DC, 1:AC; Th=0)
0x10,
//Li
0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D,
//Vi
0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0,
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5,
0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2,
0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
0xF9, 0xFA
};
//Huffman table for Chrominance AC Coefficients
//Reference Jpeg Spec ISO/IEC 10918-1, K.3.3.2
//K.3.3.2 is the summarized version of Table K.6
uint8_t jpeg_hufftable_chroma_ac[] = {
//TcTh (Tc=1 since 0:DC, 1:AC; Th=1)
0x11,
//Li
0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77,
//Vi
0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0,
0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26,
0x27, 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5,
0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3,
0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA,
0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
0xF9, 0xFA
};
typedef struct _YUVComponentSpecs {
//One of 0(I420)/1(NV12)/2(UYVY)/3(YUY2)/4(Y8)/5(RGBA)>
unsigned int yuv_type;
// One of VA_RT_FORMAT_YUV420, VA_RT_FORMAT_YUV422, VA_RT_FORMAT_YUV400, VA_RT_FORMAT_YUV444, VA_RT_FORMAT_RGB32
unsigned int va_surface_format;
//One of VA_FOURCC_I420, VA_FOURCC_NV12, VA_FOURCC_UYVY, VA_FOURCC_YUY2, VA_FOURCC_Y800, VA_FOURCC_444P, VA_FOURCC_RGBA
unsigned int fourcc_val; //Using this field to evaluate the input file type.
//no.of. components
unsigned int num_components;
//Y horizontal subsample
unsigned int y_h_subsample;
//Y vertical subsample
unsigned int y_v_subsample;
//U horizontal subsample
unsigned int u_h_subsample;
//U vertical subsample
unsigned int u_v_subsample;
//V horizontal subsample
unsigned int v_h_subsample;
//V vertical subsample
unsigned int v_v_subsample;
} YUVComponentSpecs;