/* Multiply Quantization table with quality factor to get LQT and CQT */
void
initialize_quantization_tables(UINT32 quality_factor)
{
UINT16 i, index;
UINT32 value;
UINT8 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 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 < 64; 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;
Lqt[index] = (UINT8) value;
ILqt[i] = DSP_Division(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;
Cqt[index] = (UINT8) value;
ICqt[i] = DSP_Division(0x8000, value);
}
}
/* Will use constant Quantization tables to make it faster */
void initialize_quantization_tables (struct JPEG_ENCODER_STRUCTURE * jpeg_encoder_structure)
{
UINT16 i, index;
UINT32 value;
/* comment next line to use JPEG default tables*/
#define QCAM_TABLES
#ifndef QCAM_TABLES
/* JPEG default tables (good Quality) */
static UINT8 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
};
static UINT8 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
};
#else
/* quickcam 5000pro tables (very good quality) */
static UINT8 luminance_quant_table [] =
{
0x04, 0x02, 0x03, 0x03, 0x03, 0x02, 0x04, 0x03,
0x03, 0x03, 0x04, 0x04, 0x04, 0x04, 0x06, 0x0a,
0x06, 0x06, 0x05, 0x05, 0x06, 0x0c, 0x08, 0x09,
0x07, 0x0a, 0x0e, 0x0c, 0x0f, 0x0f, 0x0e, 0x0c,
0x0e, 0x0f, 0x10, 0x12, 0x17, 0x13, 0x10, 0x11,
0x15, 0x11, 0x0d, 0x0e, 0x14, 0x1a, 0x14, 0x15,
0x17, 0x18, 0x19, 0x1a, 0x19, 0x0f, 0x13, 0x1c,
0x1e, 0x1c, 0x19, 0x1e, 0x17, 0x19, 0x19, 0x18
};
static UINT8 chrominance_quant_table [] =
{
0x04, 0x04, 0x04, 0x06, 0x05, 0x06, 0x0b, 0x06,
0x06, 0x0b, 0x18, 0x10, 0x0e, 0x10, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18
};
#endif
/* static UINT8 qtable_jpeg_flattened[] =
* { 18, 23, 22, 28, 34, 44, 50, 55,
* 24, 24, 26, 31, 36, 53, 54, 52,
* 26, 25, 28, 34, 44, 53, 58, 52,
* 26, 29, 33, 38, 50, 65, 63, 55,
* 30, 33, 43, 52, 58, 73, 71, 61,
* 34, 41, 52, 56, 63, 71, 74, 67,
* 49, 56, 62, 65, 71, 77, 77, 70,
* 59, 67, 68, 69, 74, 70, 71, 70};
*
* static UINT8 qtable_semiuniform[] =
* { 16, 32, 64, 64, 64, 64, 64, 64,
* 32, 64, 64, 64, 64, 64, 64, 64,
* 64, 64, 64, 64, 64, 64, 64, 64,
* 64, 64, 64, 64, 64, 64, 64, 64,
* 64, 64, 64, 64, 64, 64, 64, 64,
* 64, 64, 64, 64, 64, 64, 64, 64,
* 64, 64, 64, 64, 64, 64, 64, 64,
* 64, 64, 64, 64, 64, 64, 64, 64 };
*
* static UINT8 qtable_uniform[] =
* { 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100,
* 100, 100, 100, 100, 100, 100, 100, 100 };
*
* static UINT8 qtable_none[] =
* { 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1,
* 1, 1, 1, 1, 1, 1, 1, 1 };
*
* static UINT8 qtable_jpeg_squashed[] = { //4*sqrt(jpeg_flat)
* 18, 19, 19, 21, 23, 27, 28, 30,
* 20, 20, 21, 22, 24, 29, 30, 29,
* 21, 20, 21, 23, 27, 29, 31, 29,
* 21, 22, 23, 25, 28, 32, 32, 30,
* 22, 23, 26, 29, 31, 34, 34, 31,
* 23, 26, 29, 30, 32, 34, 35, 33,
* 28, 30, 32, 32, 34, 35, 35, 34,
* 31, 33, 33, 33, 35, 34, 34, 34 };
*/
for (i=0; i<64; i++)
{
index = zigzag_table [i];
value= luminance_quant_table [i];
jpeg_encoder_structure->Lqt [index] = (UINT8) value;
jpeg_encoder_structure->ILqt [i] = DSP_Division (0x8000, value);
value = chrominance_quant_table [i];
jpeg_encoder_structure->Cqt[index] = (UINT8) value;
jpeg_encoder_structure->ICqt [i] = DSP_Division (0x8000, value);
}
}
