|
|
/*!
|
/*!
|
***********************************************************************
|
***********************************************************************
|
* \file
|
* \file
|
* block.c
|
* block.c
|
*
|
*
|
* \brief
|
* \brief
|
* Block functions
|
* Block functions
|
*
|
*
|
* \author
|
* \author
|
* Main contributors (see contributors.h for copyright, address and affiliation details)
|
* Main contributors (see contributors.h for copyright, address and affiliation details)
|
* - Inge Lille-Langoy <inge.lille-langoy@telenor.com>
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* - Inge Lille-Langoy <inge.lille-langoy@telenor.com>
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* - Rickard Sjoberg <rickard.sjoberg@era.ericsson.se>
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* - Rickard Sjoberg <rickard.sjoberg@era.ericsson.se>
|
***********************************************************************
|
***********************************************************************
|
*/
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*/
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|
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#include "contributors.h"
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#include "contributors.h"
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|
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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|
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#include "global.h"
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#include "global.h"
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#include "block.h"
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#include "block.h"
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#include "image.h"
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#include "image.h"
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#include "mb_access.h"
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#include "mb_access.h"
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#define Q_BITS 15
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#define Q_BITS 15
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|
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static const int quant_coef[6][4][4] = {
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static const int quant_coef[6][4][4] = {
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{{13107, 8066,13107, 8066},{ 8066, 5243, 8066, 5243},{13107, 8066,13107, 8066},{ 8066, 5243, 8066, 5243}},
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{{13107, 8066,13107, 8066},{ 8066, 5243, 8066, 5243},{13107, 8066,13107, 8066},{ 8066, 5243, 8066, 5243}},
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{{11916, 7490,11916, 7490},{ 7490, 4660, 7490, 4660},{11916, 7490,11916, 7490},{ 7490, 4660, 7490, 4660}},
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{{11916, 7490,11916, 7490},{ 7490, 4660, 7490, 4660},{11916, 7490,11916, 7490},{ 7490, 4660, 7490, 4660}},
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{{10082, 6554,10082, 6554},{ 6554, 4194, 6554, 4194},{10082, 6554,10082, 6554},{ 6554, 4194, 6554, 4194}},
|
{{10082, 6554,10082, 6554},{ 6554, 4194, 6554, 4194},{10082, 6554,10082, 6554},{ 6554, 4194, 6554, 4194}},
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{{ 9362, 5825, 9362, 5825},{ 5825, 3647, 5825, 3647},{ 9362, 5825, 9362, 5825},{ 5825, 3647, 5825, 3647}},
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{{ 9362, 5825, 9362, 5825},{ 5825, 3647, 5825, 3647},{ 9362, 5825, 9362, 5825},{ 5825, 3647, 5825, 3647}},
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{{ 8192, 5243, 8192, 5243},{ 5243, 3355, 5243, 3355},{ 8192, 5243, 8192, 5243},{ 5243, 3355, 5243, 3355}},
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{{ 8192, 5243, 8192, 5243},{ 5243, 3355, 5243, 3355},{ 8192, 5243, 8192, 5243},{ 5243, 3355, 5243, 3355}},
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{{ 7282, 4559, 7282, 4559},{ 4559, 2893, 4559, 2893},{ 7282, 4559, 7282, 4559},{ 4559, 2893, 4559, 2893}}
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{{ 7282, 4559, 7282, 4559},{ 4559, 2893, 4559, 2893},{ 7282, 4559, 7282, 4559},{ 4559, 2893, 4559, 2893}}
|
};
|
};
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static const int A[4][4] = {
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static const int A[4][4] = {
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{ 16, 20, 16, 20},
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{ 16, 20, 16, 20},
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{ 20, 25, 20, 25},
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{ 20, 25, 20, 25},
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{ 16, 20, 16, 20},
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{ 16, 20, 16, 20},
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{ 20, 25, 20, 25}
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{ 20, 25, 20, 25}
|
};
|
};
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|
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int quant_intra_default[16] = {
|
int quant_intra_default[16] = {
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6,13,20,28,
|
6,13,20,28,
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13,20,28,32,
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13,20,28,32,
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20,28,32,37,
|
20,28,32,37,
|
28,32,37,42
|
28,32,37,42
|
};
|
};
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|
|
int quant_inter_default[16] = {
|
int quant_inter_default[16] = {
|
10,14,20,24,
|
10,14,20,24,
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14,20,24,27,
|
14,20,24,27,
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20,24,27,30,
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20,24,27,30,
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24,27,30,34
|
24,27,30,34
|
};
|
};
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|
|
int quant8_intra_default[64] = {
|
int quant8_intra_default[64] = {
|
6,10,13,16,18,23,25,27,
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6,10,13,16,18,23,25,27,
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10,11,16,18,23,25,27,29,
|
10,11,16,18,23,25,27,29,
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13,16,18,23,25,27,29,31,
|
13,16,18,23,25,27,29,31,
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16,18,23,25,27,29,31,33,
|
16,18,23,25,27,29,31,33,
|
18,23,25,27,29,31,33,36,
|
18,23,25,27,29,31,33,36,
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23,25,27,29,31,33,36,38,
|
23,25,27,29,31,33,36,38,
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25,27,29,31,33,36,38,40,
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25,27,29,31,33,36,38,40,
|
27,29,31,33,36,38,40,42
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27,29,31,33,36,38,40,42
|
};
|
};
|
|
|
int quant8_inter_default[64] = {
|
int quant8_inter_default[64] = {
|
9,13,15,17,19,21,22,24,
|
9,13,15,17,19,21,22,24,
|
13,13,17,19,21,22,24,25,
|
13,13,17,19,21,22,24,25,
|
15,17,19,21,22,24,25,27,
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15,17,19,21,22,24,25,27,
|
17,19,21,22,24,25,27,28,
|
17,19,21,22,24,25,27,28,
|
19,21,22,24,25,27,28,30,
|
19,21,22,24,25,27,28,30,
|
21,22,24,25,27,28,30,32,
|
21,22,24,25,27,28,30,32,
|
22,24,25,27,28,30,32,33,
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22,24,25,27,28,30,32,33,
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24,25,27,28,30,32,33,35
|
24,25,27,28,30,32,33,35
|
};
|
};
|
|
|
int quant_org[16] = { //to be use if no q matrix is chosen
|
int quant_org[16] = { //to be use if no q matrix is chosen
|
16,16,16,16,
|
16,16,16,16,
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16,16,16,16,
|
16,16,16,16,
|
16,16,16,16,
|
16,16,16,16,
|
16,16,16,16
|
16,16,16,16
|
};
|
};
|
|
|
int quant8_org[64] = { //to be use if no q matrix is chosen
|
int quant8_org[64] = { //to be use if no q matrix is chosen
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16,
|
16,16,16,16,16,16,16,16
|
16,16,16,16,16,16,16,16
|
};
|
};
|
|
|
// Notation for comments regarding prediction and predictors.
|
// Notation for comments regarding prediction and predictors.
|
// The pels of the 4x4 block are labelled a..p. The predictor pels above
|
// The pels of the 4x4 block are labelled a..p. The predictor pels above
|
// are labelled A..H, from the left I..L, and from above left X, as follows:
|
// are labelled A..H, from the left I..L, and from above left X, as follows:
|
//
|
//
|
// X A B C D E F G H
|
// X A B C D E F G H
|
// I a b c d
|
// I a b c d
|
// J e f g h
|
// J e f g h
|
// K i j k l
|
// K i j k l
|
// L m n o p
|
// L m n o p
|
//
|
//
|
|
|
// Predictor array index definitions
|
// Predictor array index definitions
|
#define P_X (PredPel[0])
|
#define P_X (PredPel[0])
|
#define P_A (PredPel[1])
|
#define P_A (PredPel[1])
|
#define P_B (PredPel[2])
|
#define P_B (PredPel[2])
|
#define P_C (PredPel[3])
|
#define P_C (PredPel[3])
|
#define P_D (PredPel[4])
|
#define P_D (PredPel[4])
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#define P_E (PredPel[5])
|
#define P_E (PredPel[5])
|
#define P_F (PredPel[6])
|
#define P_F (PredPel[6])
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#define P_G (PredPel[7])
|
#define P_G (PredPel[7])
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#define P_H (PredPel[8])
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#define P_H (PredPel[8])
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#define P_I (PredPel[9])
|
#define P_I (PredPel[9])
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#define P_J (PredPel[10])
|
#define P_J (PredPel[10])
|
#define P_K (PredPel[11])
|
#define P_K (PredPel[11])
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#define P_L (PredPel[12])
|
#define P_L (PredPel[12])
|
|
|
/*!
|
/*!
|
***********************************************************************
|
***********************************************************************
|
* \brief
|
* \brief
|
* makes and returns 4x4 blocks with all 5 intra prediction modes
|
* makes and returns 4x4 blocks with all 5 intra prediction modes
|
*
|
*
|
* \return
|
* \return
|
* DECODING_OK decoding of intraprediction mode was sucessfull \n
|
* DECODING_OK decoding of intraprediction mode was sucessfull \n
|
* SEARCH_SYNC search next sync element as errors while decoding occured
|
* SEARCH_SYNC search next sync element as errors while decoding occured
|
***********************************************************************
|
***********************************************************************
|
*/
|
*/
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|
|
int intrapred( struct img_par *img, //!< image parameters
|
int intrapred( struct img_par *img, //!< image parameters
|
int ioff, //!< pixel offset X within MB
|
int ioff, //!< pixel offset X within MB
|
int joff, //!< pixel offset Y within MB
|
int joff, //!< pixel offset Y within MB
|
int img_block_x, //!< location of block X, multiples of 4
|
int img_block_x, //!< location of block X, multiples of 4
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int img_block_y) //!< location of block Y, multiples of 4
|
int img_block_y) //!< location of block Y, multiples of 4
|
{
|
{
|
int i,j;
|
int i,j;
|
int s0;
|
int s0;
|
int img_y,img_x;
|
int img_y,img_x;
|
imgpel PredPel[13]; // array of predictor pels
|
imgpel PredPel[13]; // array of predictor pels
|
|
|
imgpel **imgY = dec_picture->imgY;
|
imgpel **imgY = dec_picture->imgY;
|
|
|
PixelPos pix_a[4];
|
PixelPos pix_a[4];
|
PixelPos pix_b, pix_c, pix_d;
|
PixelPos pix_b, pix_c, pix_d;
|
|
|
int block_available_up;
|
int block_available_up;
|
int block_available_left;
|
int block_available_left;
|
int block_available_up_left;
|
int block_available_up_left;
|
int block_available_up_right;
|
int block_available_up_right;
|
|
|
int mb_nr=img->current_mb_nr;
|
int mb_nr=img->current_mb_nr;
|
|
|
byte predmode = img->ipredmode[img_block_y][img_block_x];
|
byte predmode = img->ipredmode[img_block_y][img_block_x];
|
int jpos0 = joff, jpos1 = joff + 1, jpos2 = joff + 2, jpos3 = joff + 3;
|
int jpos0 = joff, jpos1 = joff + 1, jpos2 = joff + 2, jpos3 = joff + 3;
|
int ipos0 = ioff, ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3;
|
int ipos0 = ioff, ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3;
|
|
|
|
|
img_x=img_block_x*4;
|
img_x=img_block_x*4;
|
img_y=img_block_y*4;
|
img_y=img_block_y*4;
|
|
|
for (i=0;i<4;i++)
|
for (i=0;i<4;i++)
|
{
|
{
|
getNeighbour(mb_nr, ioff -1 , joff +i , IS_LUMA, &pix_a[i]);
|
getNeighbour(mb_nr, ioff -1 , joff +i , IS_LUMA, &pix_a[i]);
|
}
|
}
|
|
|
getNeighbour(mb_nr, ioff , joff -1 , IS_LUMA, &pix_b);
|
getNeighbour(mb_nr, ioff , joff -1 , IS_LUMA, &pix_b);
|
getNeighbour(mb_nr, ioff +4 , joff -1 , IS_LUMA, &pix_c);
|
getNeighbour(mb_nr, ioff +4 , joff -1 , IS_LUMA, &pix_c);
|
getNeighbour(mb_nr, ioff -1 , joff -1 , IS_LUMA, &pix_d);
|
getNeighbour(mb_nr, ioff -1 , joff -1 , IS_LUMA, &pix_d);
|
|
|
pix_c.available = pix_c.available && !((ioff==4) && ((joff==4)||(joff==12)));
|
pix_c.available = pix_c.available && !((ioff==4) && ((joff==4)||(joff==12)));
|
|
|
if (active_pps->constrained_intra_pred_flag)
|
if (active_pps->constrained_intra_pred_flag)
|
{
|
{
|
for (i=0, block_available_left=1; i<4;i++)
|
for (i=0, block_available_left=1; i<4;i++)
|
block_available_left &= pix_a[i].available ? img->intra_block[pix_a[i].mb_addr]: 0;
|
block_available_left &= pix_a[i].available ? img->intra_block[pix_a[i].mb_addr]: 0;
|
block_available_up = pix_b.available ? img->intra_block [pix_b.mb_addr] : 0;
|
block_available_up = pix_b.available ? img->intra_block [pix_b.mb_addr] : 0;
|
block_available_up_right = pix_c.available ? img->intra_block [pix_c.mb_addr] : 0;
|
block_available_up_right = pix_c.available ? img->intra_block [pix_c.mb_addr] : 0;
|
block_available_up_left = pix_d.available ? img->intra_block [pix_d.mb_addr] : 0;
|
block_available_up_left = pix_d.available ? img->intra_block [pix_d.mb_addr] : 0;
|
}
|
}
|
else
|
else
|
{
|
{
|
block_available_left = pix_a[0].available;
|
block_available_left = pix_a[0].available;
|
block_available_up = pix_b.available;
|
block_available_up = pix_b.available;
|
block_available_up_right = pix_c.available;
|
block_available_up_right = pix_c.available;
|
block_available_up_left = pix_d.available;
|
block_available_up_left = pix_d.available;
|
}
|
}
|
|
|
// form predictor pels
|
// form predictor pels
|
if (block_available_up)
|
if (block_available_up)
|
{
|
{
|
P_A = imgY[pix_b.pos_y][pix_b.pos_x+0];
|
P_A = imgY[pix_b.pos_y][pix_b.pos_x+0];
|
P_B = imgY[pix_b.pos_y][pix_b.pos_x+1];
|
P_B = imgY[pix_b.pos_y][pix_b.pos_x+1];
|
P_C = imgY[pix_b.pos_y][pix_b.pos_x+2];
|
P_C = imgY[pix_b.pos_y][pix_b.pos_x+2];
|
P_D = imgY[pix_b.pos_y][pix_b.pos_x+3];
|
P_D = imgY[pix_b.pos_y][pix_b.pos_x+3];
|
|
|
}
|
}
|
else
|
else
|
{
|
{
|
P_A = P_B = P_C = P_D = img->dc_pred_value_luma;
|
P_A = P_B = P_C = P_D = img->dc_pred_value_luma;
|
}
|
}
|
|
|
if (block_available_up_right)
|
if (block_available_up_right)
|
{
|
{
|
P_E = imgY[pix_c.pos_y][pix_c.pos_x+0];
|
P_E = imgY[pix_c.pos_y][pix_c.pos_x+0];
|
P_F = imgY[pix_c.pos_y][pix_c.pos_x+1];
|
P_F = imgY[pix_c.pos_y][pix_c.pos_x+1];
|
P_G = imgY[pix_c.pos_y][pix_c.pos_x+2];
|
P_G = imgY[pix_c.pos_y][pix_c.pos_x+2];
|
P_H = imgY[pix_c.pos_y][pix_c.pos_x+3];
|
P_H = imgY[pix_c.pos_y][pix_c.pos_x+3];
|
}
|
}
|
else
|
else
|
{
|
{
|
P_E = P_F = P_G = P_H = P_D;
|
P_E = P_F = P_G = P_H = P_D;
|
}
|
}
|
|
|
if (block_available_left)
|
if (block_available_left)
|
{
|
{
|
P_I = imgY[pix_a[0].pos_y][pix_a[0].pos_x];
|
P_I = imgY[pix_a[0].pos_y][pix_a[0].pos_x];
|
P_J = imgY[pix_a[1].pos_y][pix_a[1].pos_x];
|
P_J = imgY[pix_a[1].pos_y][pix_a[1].pos_x];
|
P_K = imgY[pix_a[2].pos_y][pix_a[2].pos_x];
|
P_K = imgY[pix_a[2].pos_y][pix_a[2].pos_x];
|
P_L = imgY[pix_a[3].pos_y][pix_a[3].pos_x];
|
P_L = imgY[pix_a[3].pos_y][pix_a[3].pos_x];
|
}
|
}
|
else
|
else
|
{
|
{
|
P_I = P_J = P_K = P_L = img->dc_pred_value_luma;
|
P_I = P_J = P_K = P_L = img->dc_pred_value_luma;
|
}
|
}
|
|
|
if (block_available_up_left)
|
if (block_available_up_left)
|
{
|
{
|
P_X = imgY[pix_d.pos_y][pix_d.pos_x];
|
P_X = imgY[pix_d.pos_y][pix_d.pos_x];
|
}
|
}
|
else
|
else
|
{
|
{
|
P_X = img->dc_pred_value_luma;
|
P_X = img->dc_pred_value_luma;
|
}
|
}
|
|
|
|
|
switch (predmode)
|
switch (predmode)
|
{
|
{
|
case DC_PRED: /* DC prediction */
|
case DC_PRED: /* DC prediction */
|
|
|
s0 = 0;
|
s0 = 0;
|
if (block_available_up && block_available_left)
|
if (block_available_up && block_available_left)
|
{
|
{
|
// no edge
|
// no edge
|
s0 = (P_A + P_B + P_C + P_D + P_I + P_J + P_K + P_L + 4)/(2*BLOCK_SIZE);
|
s0 = (P_A + P_B + P_C + P_D + P_I + P_J + P_K + P_L + 4)/(2*BLOCK_SIZE);
|
}
|
}
|
else if (!block_available_up && block_available_left)
|
else if (!block_available_up && block_available_left)
|
{
|
{
|
// upper edge
|
// upper edge
|
s0 = (P_I + P_J + P_K + P_L + 2)/BLOCK_SIZE;
|
s0 = (P_I + P_J + P_K + P_L + 2)/BLOCK_SIZE;
|
}
|
}
|
else if (block_available_up && !block_available_left)
|
else if (block_available_up && !block_available_left)
|
{
|
{
|
// left edge
|
// left edge
|
s0 = (P_A + P_B + P_C + P_D + 2)/BLOCK_SIZE;
|
s0 = (P_A + P_B + P_C + P_D + 2)/BLOCK_SIZE;
|
}
|
}
|
else //if (!block_available_up && !block_available_left)
|
else //if (!block_available_up && !block_available_left)
|
{
|
{
|
// top left corner, nothing to predict from
|
// top left corner, nothing to predict from
|
s0 = img->dc_pred_value_luma;
|
s0 = img->dc_pred_value_luma;
|
}
|
}
|
|
|
for (j=0; j < BLOCK_SIZE; j++)
|
for (j=0; j < BLOCK_SIZE; j++)
|
{
|
{
|
for (i=0; i < BLOCK_SIZE; i++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
{
|
{
|
// store DC prediction
|
// store DC prediction
|
img->mpr[j+joff][i+ioff] = (imgpel) s0;
|
img->mpr[j+joff][i+ioff] = (imgpel) s0;
|
}
|
}
|
}
|
}
|
break;
|
break;
|
|
|
case VERT_PRED: /* vertical prediction from block above */
|
case VERT_PRED: /* vertical prediction from block above */
|
if (!block_available_up)
|
if (!block_available_up)
|
printf ("warning: Intra_4x4_Vertical prediction mode not allowed at mb %d\n", (int) img->current_mb_nr);
|
printf ("warning: Intra_4x4_Vertical prediction mode not allowed at mb %d\n", (int) img->current_mb_nr);
|
|
|
for(j=0;j<BLOCK_SIZE;j++)
|
for(j=0;j<BLOCK_SIZE;j++)
|
for(i=0;i<BLOCK_SIZE;i++)
|
for(i=0;i<BLOCK_SIZE;i++)
|
img->mpr[j+joff][i+ioff]=imgY[pix_b.pos_y][pix_b.pos_x+i];/* store predicted 4x4 block */
|
img->mpr[j+joff][i+ioff]=imgY[pix_b.pos_y][pix_b.pos_x+i];/* store predicted 4x4 block */
|
break;
|
break;
|
|
|
case HOR_PRED: /* horizontal prediction from left block */
|
case HOR_PRED: /* horizontal prediction from left block */
|
if (!block_available_left)
|
if (!block_available_left)
|
printf ("warning: Intra_4x4_Horizontal prediction mode not allowed at mb %d\n",(int) img->current_mb_nr);
|
printf ("warning: Intra_4x4_Horizontal prediction mode not allowed at mb %d\n",(int) img->current_mb_nr);
|
|
|
for(j=0;j<BLOCK_SIZE;j++)
|
for(j=0;j<BLOCK_SIZE;j++)
|
for(i=0;i<BLOCK_SIZE;i++)
|
for(i=0;i<BLOCK_SIZE;i++)
|
img->mpr[j+joff][i+ioff]=imgY[pix_a[j].pos_y][pix_a[j].pos_x]; /* store predicted 4x4 block */
|
img->mpr[j+joff][i+ioff]=imgY[pix_a[j].pos_y][pix_a[j].pos_x]; /* store predicted 4x4 block */
|
break;
|
break;
|
|
|
case DIAG_DOWN_RIGHT_PRED:
|
case DIAG_DOWN_RIGHT_PRED:
|
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
|
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
|
printf ("warning: Intra_4x4_Diagonal_Down_Right prediction mode not allowed at mb %d\n",(int) img->current_mb_nr);
|
printf ("warning: Intra_4x4_Diagonal_Down_Right prediction mode not allowed at mb %d\n",(int) img->current_mb_nr);
|
|
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_L + 2*P_K + P_J + 2) >> 2);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_L + 2*P_K + P_J + 2) >> 2);
|
img->mpr[jpos2][ipos0] =
|
img->mpr[jpos2][ipos0] =
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_K + 2*P_J + P_I + 2) >> 2);
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_K + 2*P_J + P_I + 2) >> 2);
|
img->mpr[jpos1][ipos0] =
|
img->mpr[jpos1][ipos0] =
|
img->mpr[jpos2][ipos1] =
|
img->mpr[jpos2][ipos1] =
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_J + 2*P_I + P_X + 2) >> 2);
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_J + 2*P_I + P_X + 2) >> 2);
|
img->mpr[jpos0][ipos0] =
|
img->mpr[jpos0][ipos0] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos2][ipos2] =
|
img->mpr[jpos2][ipos2] =
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_I + 2*P_X + P_A + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_I + 2*P_X + P_A + 2) >> 2);
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_X + 2*P_A + P_B + 2) >> 2);
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_X + 2*P_A + P_B + 2) >> 2);
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos1][ipos3] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos1][ipos3] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos0][ipos3] = (imgpel) ((P_B + 2*P_C + P_D + 2) >> 2);
|
img->mpr[jpos0][ipos3] = (imgpel) ((P_B + 2*P_C + P_D + 2) >> 2);
|
break;
|
break;
|
|
|
case DIAG_DOWN_LEFT_PRED:
|
case DIAG_DOWN_LEFT_PRED:
|
if (!block_available_up)
|
if (!block_available_up)
|
printf ("warning: Intra_4x4_Diagonal_Down_Left prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
printf ("warning: Intra_4x4_Diagonal_Down_Left prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
|
|
img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2);
|
img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2);
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos1][ipos0] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2);
|
img->mpr[jpos1][ipos0] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2);
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2);
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2);
|
img->mpr[jpos0][ipos3] =
|
img->mpr[jpos0][ipos3] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos2][ipos1] =
|
img->mpr[jpos2][ipos1] =
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2);
|
img->mpr[jpos1][ipos3] =
|
img->mpr[jpos1][ipos3] =
|
img->mpr[jpos2][ipos2] =
|
img->mpr[jpos2][ipos2] =
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2);
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2);
|
img->mpr[jpos2][ipos3] =
|
img->mpr[jpos2][ipos3] =
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2);
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_G + 3*(P_H) + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_G + 3*(P_H) + 2) >> 2);
|
break;
|
break;
|
|
|
case VERT_RIGHT_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
case VERT_RIGHT_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
|
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
|
printf ("warning: Intra_4x4_Vertical_Right prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
printf ("warning: Intra_4x4_Vertical_Right prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
|
|
img->mpr[jpos0][ipos0] =
|
img->mpr[jpos0][ipos0] =
|
img->mpr[jpos2][ipos1] = (imgpel) ((P_X + P_A + 1) >> 1);
|
img->mpr[jpos2][ipos1] = (imgpel) ((P_X + P_A + 1) >> 1);
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos2][ipos2] = (imgpel) ((P_A + P_B + 1) >> 1);
|
img->mpr[jpos2][ipos2] = (imgpel) ((P_A + P_B + 1) >> 1);
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_B + P_C + 1) >> 1);
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_B + P_C + 1) >> 1);
|
img->mpr[jpos0][ipos3] = (imgpel) ((P_C + P_D + 1) >> 1);
|
img->mpr[jpos0][ipos3] = (imgpel) ((P_C + P_D + 1) >> 1);
|
img->mpr[jpos1][ipos0] =
|
img->mpr[jpos1][ipos0] =
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_I + 2*P_X + P_A + 2) >> 2);
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_I + 2*P_X + P_A + 2) >> 2);
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_X + 2*P_A + P_B + 2) >> 2);
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_X + 2*P_A + P_B + 2) >> 2);
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos1][ipos3] = (imgpel) ((P_B + 2*P_C + P_D + 2) >> 2);
|
img->mpr[jpos1][ipos3] = (imgpel) ((P_B + 2*P_C + P_D + 2) >> 2);
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_X + 2*P_I + P_J + 2) >> 2);
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_X + 2*P_I + P_J + 2) >> 2);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_I + 2*P_J + P_K + 2) >> 2);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_I + 2*P_J + P_K + 2) >> 2);
|
break;
|
break;
|
|
|
case VERT_LEFT_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
case VERT_LEFT_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
if (!block_available_up)
|
if (!block_available_up)
|
printf ("warning: Intra_4x4_Vertical_Left prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
printf ("warning: Intra_4x4_Vertical_Left prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
|
|
img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_B + 1) >> 1);
|
img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_B + 1) >> 1);
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_B + P_C + 1) >> 1);
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_B + P_C + 1) >> 1);
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos2][ipos1] = (imgpel) ((P_C + P_D + 1) >> 1);
|
img->mpr[jpos2][ipos1] = (imgpel) ((P_C + P_D + 1) >> 1);
|
img->mpr[jpos0][ipos3] =
|
img->mpr[jpos0][ipos3] =
|
img->mpr[jpos2][ipos2] = (imgpel) ((P_D + P_E + 1) >> 1);
|
img->mpr[jpos2][ipos2] = (imgpel) ((P_D + P_E + 1) >> 1);
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_E + P_F + 1) >> 1);
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_E + P_F + 1) >> 1);
|
img->mpr[jpos1][ipos0] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos1][ipos0] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_B + 2*P_C + P_D + 2) >> 2);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_B + 2*P_C + P_D + 2) >> 2);
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_C + 2*P_D + P_E + 2) >> 2);
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_C + 2*P_D + P_E + 2) >> 2);
|
img->mpr[jpos1][ipos3] =
|
img->mpr[jpos1][ipos3] =
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_D + 2*P_E + P_F + 2) >> 2);
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_D + 2*P_E + P_F + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_E + 2*P_F + P_G + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_E + 2*P_F + P_G + 2) >> 2);
|
break;
|
break;
|
|
|
case HOR_UP_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
case HOR_UP_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
if (!block_available_left)
|
if (!block_available_left)
|
printf ("warning: Intra_4x4_Horizontal_Up prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
printf ("warning: Intra_4x4_Horizontal_Up prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
|
|
img->mpr[jpos0][ipos0] = (imgpel) ((P_I + P_J + 1) >> 1);
|
img->mpr[jpos0][ipos0] = (imgpel) ((P_I + P_J + 1) >> 1);
|
img->mpr[jpos0][ipos1] = (imgpel) ((P_I + 2*P_J + P_K + 2) >> 2);
|
img->mpr[jpos0][ipos1] = (imgpel) ((P_I + 2*P_J + P_K + 2) >> 2);
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos0][ipos2] =
|
img->mpr[jpos1][ipos0] = (imgpel) ((P_J + P_K + 1) >> 1);
|
img->mpr[jpos1][ipos0] = (imgpel) ((P_J + P_K + 1) >> 1);
|
img->mpr[jpos0][ipos3] =
|
img->mpr[jpos0][ipos3] =
|
img->mpr[jpos1][ipos1] = (imgpel) ((P_J + 2*P_K + P_L + 2) >> 2);
|
img->mpr[jpos1][ipos1] = (imgpel) ((P_J + 2*P_K + P_L + 2) >> 2);
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos1][ipos2] =
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_K + P_L + 1) >> 1);
|
img->mpr[jpos2][ipos0] = (imgpel) ((P_K + P_L + 1) >> 1);
|
img->mpr[jpos1][ipos3] =
|
img->mpr[jpos1][ipos3] =
|
img->mpr[jpos2][ipos1] = (imgpel) ((P_K + 2*P_L + P_L + 2) >> 2);
|
img->mpr[jpos2][ipos1] = (imgpel) ((P_K + 2*P_L + P_L + 2) >> 2);
|
img->mpr[jpos2][ipos3] =
|
img->mpr[jpos2][ipos3] =
|
img->mpr[jpos3][ipos1] =
|
img->mpr[jpos3][ipos1] =
|
img->mpr[jpos3][ipos0] =
|
img->mpr[jpos3][ipos0] =
|
img->mpr[jpos2][ipos2] =
|
img->mpr[jpos2][ipos2] =
|
img->mpr[jpos3][ipos2] =
|
img->mpr[jpos3][ipos2] =
|
img->mpr[jpos3][ipos3] = (imgpel) P_L;
|
img->mpr[jpos3][ipos3] = (imgpel) P_L;
|
break;
|
break;
|
|
|
case HOR_DOWN_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
case HOR_DOWN_PRED:/* diagonal prediction -22.5 deg to horizontal plane */
|
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
|
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
|
printf ("warning: Intra_4x4_Horizontal_Down prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
printf ("warning: Intra_4x4_Horizontal_Down prediction mode not allowed at mb %d\n",img->current_mb_nr);
|
|
|
img->mpr[jpos0][ipos0] =
|
img->mpr[jpos0][ipos0] =
|
img->mpr[jpos1][ipos2] = (imgpel) ((P_X + P_I + 1) >> 1);
|
img->mpr[jpos1][ipos2] = (imgpel) ((P_X + P_I + 1) >> 1);
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos0][ipos1] =
|
img->mpr[jpos1][ipos3] = (imgpel) ((P_I + 2*P_X + P_A + 2) >> 2);
|
img->mpr[jpos1][ipos3] = (imgpel) ((P_I + 2*P_X + P_A + 2) >> 2);
|
img->mpr[jpos0][ipos2] = (imgpel) ((P_X + 2*P_A + P_B + 2) >> 2);
|
img->mpr[jpos0][ipos2] = (imgpel) ((P_X + 2*P_A + P_B + 2) >> 2);
|
img->mpr[jpos0][ipos3] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos0][ipos3] = (imgpel) ((P_A + 2*P_B + P_C + 2) >> 2);
|
img->mpr[jpos1][ipos0] =
|
img->mpr[jpos1][ipos0] =
|
img->mpr[jpos2][ipos2] = (imgpel) ((P_I + P_J + 1) >> 1);
|
img->mpr[jpos2][ipos2] = (imgpel) ((P_I + P_J + 1) >> 1);
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos1][ipos1] =
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_X + 2*P_I + P_J + 2) >> 2);
|
img->mpr[jpos2][ipos3] = (imgpel) ((P_X + 2*P_I + P_J + 2) >> 2);
|
img->mpr[jpos2][ipos0] =
|
img->mpr[jpos2][ipos0] =
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_J + P_K + 1) >> 1);
|
img->mpr[jpos3][ipos2] = (imgpel) ((P_J + P_K + 1) >> 1);
|
img->mpr[jpos2][ipos1] =
|
img->mpr[jpos2][ipos1] =
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_I + 2*P_J + P_K + 2) >> 2);
|
img->mpr[jpos3][ipos3] = (imgpel) ((P_I + 2*P_J + P_K + 2) >> 2);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_K + P_L + 1) >> 1);
|
img->mpr[jpos3][ipos0] = (imgpel) ((P_K + P_L + 1) >> 1);
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_J + 2*P_K + P_L + 2) >> 2);
|
img->mpr[jpos3][ipos1] = (imgpel) ((P_J + 2*P_K + P_L + 2) >> 2);
|
break;
|
break;
|
|
|
default:
|
default:
|
printf("Error: illegal intra_4x4 prediction mode: %d\n",predmode);
|
printf("Error: illegal intra_4x4 prediction mode: %d\n",predmode);
|
return SEARCH_SYNC;
|
return SEARCH_SYNC;
|
break;
|
break;
|
}
|
}
|
|
|
return DECODING_OK;
|
return DECODING_OK;
|
}
|
}
|
|
|
|
|
/*!
|
/*!
|
***********************************************************************
|
***********************************************************************
|
* \return
|
* \return
|
* best SAD
|
* best SAD
|
***********************************************************************
|
***********************************************************************
|
*/
|
*/
|
int intrapred_luma_16x16(struct img_par *img, //!< image parameters
|
int intrapred_luma_16x16(struct img_par *img, //!< image parameters
|
int predmode) //!< prediction mode
|
int predmode) //!< prediction mode
|
{
|
{
|
int s0=0,s1,s2;
|
int s0=0,s1,s2;
|
|
|
int i,j;
|
int i,j;
|
|
|
int ih,iv;
|
int ih,iv;
|
int ib,ic,iaa;
|
int ib,ic,iaa;
|
|
|
imgpel **imgY=dec_picture->imgY;
|
imgpel **imgY=dec_picture->imgY;
|
|
|
int mb_nr=img->current_mb_nr;
|
int mb_nr=img->current_mb_nr;
|
|
|
PixelPos up; //!< pixel position p(0,-1)
|
PixelPos up; //!< pixel position p(0,-1)
|
PixelPos left[17]; //!< pixel positions p(-1, -1..15)
|
PixelPos left[17]; //!< pixel positions p(-1, -1..15)
|
|
|
int up_avail, left_avail, left_up_avail;
|
int up_avail, left_avail, left_up_avail;
|
|
|
s1=s2=0;
|
s1=s2=0;
|
|
|
for (i=0;i<17;i++)
|
for (i=0;i<17;i++)
|
{
|
{
|
getNeighbour(mb_nr, -1 , i-1 , IS_LUMA, &left[i]);
|
getNeighbour(mb_nr, -1 , i-1 , IS_LUMA, &left[i]);
|
}
|
}
|
getNeighbour(mb_nr, 0 , -1 , IS_LUMA, &up);
|
getNeighbour(mb_nr, 0 , -1 , IS_LUMA, &up);
|
|
|
if (!active_pps->constrained_intra_pred_flag)
|
if (!active_pps->constrained_intra_pred_flag)
|
{
|
{
|
up_avail = up.available;
|
up_avail = up.available;
|
left_avail = left[1].available;
|
left_avail = left[1].available;
|
left_up_avail = left[0].available;
|
left_up_avail = left[0].available;
|
}
|
}
|
else
|
else
|
{
|
{
|
up_avail = up.available ? img->intra_block[up.mb_addr] : 0;
|
up_avail = up.available ? img->intra_block[up.mb_addr] : 0;
|
for (i=1, left_avail=1; i<17;i++)
|
for (i=1, left_avail=1; i<17;i++)
|
left_avail &= left[i].available ? img->intra_block[left[i].mb_addr]: 0;
|
left_avail &= left[i].available ? img->intra_block[left[i].mb_addr]: 0;
|
left_up_avail = left[0].available ? img->intra_block[left[0].mb_addr]: 0;
|
left_up_avail = left[0].available ? img->intra_block[left[0].mb_addr]: 0;
|
}
|
}
|
|
|
switch (predmode)
|
switch (predmode)
|
{
|
{
|
case VERT_PRED_16: // vertical prediction from block above
|
case VERT_PRED_16: // vertical prediction from block above
|
if (!up_avail)
|
if (!up_avail)
|
error ("invalid 16x16 intra pred Mode VERT_PRED_16",500);
|
error ("invalid 16x16 intra pred Mode VERT_PRED_16",500);
|
for(j=0;j<MB_BLOCK_SIZE;j++)
|
for(j=0;j<MB_BLOCK_SIZE;j++)
|
for(i=0;i<MB_BLOCK_SIZE;i++)
|
for(i=0;i<MB_BLOCK_SIZE;i++)
|
img->mpr[j][i]=imgY[up.pos_y][up.pos_x+i];// store predicted 16x16 block
|
img->mpr[j][i]=imgY[up.pos_y][up.pos_x+i];// store predicted 16x16 block
|
break;
|
break;
|
|
|
case HOR_PRED_16: // horizontal prediction from left block
|
case HOR_PRED_16: // horizontal prediction from left block
|
if (!left_avail)
|
if (!left_avail)
|
error ("invalid 16x16 intra pred Mode HOR_PRED_16",500);
|
error ("invalid 16x16 intra pred Mode HOR_PRED_16",500);
|
for(j=0;j<MB_BLOCK_SIZE;j++)
|
for(j=0;j<MB_BLOCK_SIZE;j++)
|
for(i=0;i<MB_BLOCK_SIZE;i++)
|
for(i=0;i<MB_BLOCK_SIZE;i++)
|
img->mpr[j][i]=imgY[left[j+1].pos_y][left[j+1].pos_x]; // store predicted 16x16 block
|
img->mpr[j][i]=imgY[left[j+1].pos_y][left[j+1].pos_x]; // store predicted 16x16 block
|
break;
|
break;
|
|
|
case DC_PRED_16: // DC prediction
|
case DC_PRED_16: // DC prediction
|
s1=s2=0;
|
s1=s2=0;
|
for (i=0; i < MB_BLOCK_SIZE; i++)
|
for (i=0; i < MB_BLOCK_SIZE; i++)
|
{
|
{
|
if (up_avail)
|
if (up_avail)
|
s1 += imgY[up.pos_y][up.pos_x+i]; // sum hor pix
|
s1 += imgY[up.pos_y][up.pos_x+i]; // sum hor pix
|
if (left_avail)
|
if (left_avail)
|
s2 += imgY[left[i+1].pos_y][left[i+1].pos_x]; // sum vert pix
|
s2 += imgY[left[i+1].pos_y][left[i+1].pos_x]; // sum vert pix
|
}
|
}
|
if (up_avail && left_avail)
|
if (up_avail && left_avail)
|
s0=(s1+s2+16)>>5; // no edge
|
s0=(s1+s2+16)>>5; // no edge
|
if (!up_avail && left_avail)
|
if (!up_avail && left_avail)
|
s0=(s2+8)>>4; // upper edge
|
s0=(s2+8)>>4; // upper edge
|
if (up_avail && !left_avail)
|
if (up_avail && !left_avail)
|
s0=(s1+8)>>4; // left edge
|
s0=(s1+8)>>4; // left edge
|
if (!up_avail && !left_avail)
|
if (!up_avail && !left_avail)
|
s0=img->dc_pred_value_luma; // top left corner, nothing to predict from
|
s0=img->dc_pred_value_luma; // top left corner, nothing to predict from
|
for(i=0;i<MB_BLOCK_SIZE;i++)
|
for(i=0;i<MB_BLOCK_SIZE;i++)
|
for(j=0;j<MB_BLOCK_SIZE;j++)
|
for(j=0;j<MB_BLOCK_SIZE;j++)
|
{
|
{
|
img->mpr[j][i]=(imgpel) s0;
|
img->mpr[j][i]=(imgpel) s0;
|
}
|
}
|
break;
|
break;
|
case PLANE_16:// 16 bit integer plan pred
|
case PLANE_16:// 16 bit integer plan pred
|
if (!up_avail || !left_up_avail || !left_avail)
|
if (!up_avail || !left_up_avail || !left_avail)
|
error ("invalid 16x16 intra pred Mode PLANE_16",500);
|
error ("invalid 16x16 intra pred Mode PLANE_16",500);
|
|
|
ih=0;
|
ih=0;
|
iv=0;
|
iv=0;
|
for (i=1;i<9;i++)
|
for (i=1;i<9;i++)
|
{
|
{
|
if (i<8)
|
if (i<8)
|
ih += i*(imgY[up.pos_y][up.pos_x+7+i] - imgY[up.pos_y][up.pos_x+7-i]);
|
ih += i*(imgY[up.pos_y][up.pos_x+7+i] - imgY[up.pos_y][up.pos_x+7-i]);
|
else
|
else
|
ih += i*(imgY[up.pos_y][up.pos_x+7+i] - imgY[left[0].pos_y][left[0].pos_x]);
|
ih += i*(imgY[up.pos_y][up.pos_x+7+i] - imgY[left[0].pos_y][left[0].pos_x]);
|
|
|
iv += i*(imgY[left[8+i].pos_y][left[8+i].pos_x] - imgY[left[8-i].pos_y][left[8-i].pos_x]);
|
iv += i*(imgY[left[8+i].pos_y][left[8+i].pos_x] - imgY[left[8-i].pos_y][left[8-i].pos_x]);
|
}
|
}
|
ib=(5*ih+32)>>6;
|
ib=(5*ih+32)>>6;
|
ic=(5*iv+32)>>6;
|
ic=(5*iv+32)>>6;
|
|
|
iaa=16*(imgY[up.pos_y][up.pos_x+15]+imgY[left[16].pos_y][left[16].pos_x]);
|
iaa=16*(imgY[up.pos_y][up.pos_x+15]+imgY[left[16].pos_y][left[16].pos_x]);
|
for (j=0;j< MB_BLOCK_SIZE;j++)
|
for (j=0;j< MB_BLOCK_SIZE;j++)
|
{
|
{
|
for (i=0;i< MB_BLOCK_SIZE;i++)
|
for (i=0;i< MB_BLOCK_SIZE;i++)
|
{
|
{
|
img->mpr[j][i]=(imgpel) iClip1(img->max_imgpel_value,((iaa+(i-7)*ib +(j-7)*ic + 16)>>5));
|
img->mpr[j][i]=(imgpel) iClip1(img->max_imgpel_value,((iaa+(i-7)*ib +(j-7)*ic + 16)>>5));
|
}
|
}
|
}// store plane prediction
|
}// store plane prediction
|
break;
|
break;
|
|
|
default:
|
default:
|
{ // indication of fault in bitstream,exit
|
{ // indication of fault in bitstream,exit
|
printf("illegal 16x16 intra prediction mode input: %d\n",predmode);
|
printf("illegal 16x16 intra prediction mode input: %d\n",predmode);
|
return SEARCH_SYNC;
|
return SEARCH_SYNC;
|
}
|
}
|
}
|
}
|
|
|
return DECODING_OK;
|
return DECODING_OK;
|
}
|
}
|
|
|
|
|
void intrapred_chroma(struct img_par *img, int uv)
|
void intrapred_chroma(struct img_par *img, int uv)
|
{
|
{
|
int i,j, ii, jj, ioff, joff;
|
int i,j, ii, jj, ioff, joff;
|
|
|
imgpel ***imgUV = dec_picture->imgUV;
|
imgpel ***imgUV = dec_picture->imgUV;
|
|
|
int js[4][4];
|
int js[4][4];
|
|
|
int pred;
|
int pred;
|
int ih, iv, ib, ic, iaa;
|
int ih, iv, ib, ic, iaa;
|
|
|
int b8, b4;
|
int b8, b4;
|
int yuv = dec_picture->chroma_format_idc - 1;
|
int yuv = dec_picture->chroma_format_idc - 1;
|
int blk_x, blk_y;
|
int blk_x, blk_y;
|
int block_pos[3][4][4]= //[yuv][b8][b4]
|
int block_pos[3][4][4]= //[yuv][b8][b4]
|
{
|
{
|
{ {0, 1, 2, 3},{0, 0, 0, 0},{0, 0, 0, 0},{0, 0, 0, 0}},
|
{ {0, 1, 2, 3},{0, 0, 0, 0},{0, 0, 0, 0},{0, 0, 0, 0}},
|
{ {0, 1, 2, 3},{2, 3, 2, 3},{0, 0, 0, 0},{0, 0, 0, 0}},
|
{ {0, 1, 2, 3},{2, 3, 2, 3},{0, 0, 0, 0},{0, 0, 0, 0}},
|
{ {0, 1, 2, 3},{1, 1, 3, 3},{2, 3, 2, 3},{3, 3, 3, 3}}
|
{ {0, 1, 2, 3},{1, 1, 3, 3},{2, 3, 2, 3},{3, 3, 3, 3}}
|
};
|
};
|
int s0, s1, s2, s3;
|
int s0, s1, s2, s3;
|
|
|
int mb_nr=img->current_mb_nr;
|
int mb_nr=img->current_mb_nr;
|
Macroblock *currMB = &img->mb_data[img->current_mb_nr];
|
Macroblock *currMB = &img->mb_data[img->current_mb_nr];
|
|
|
PixelPos up; //!< pixel position p(0,-1)
|
PixelPos up; //!< pixel position p(0,-1)
|
PixelPos left[17]; //!< pixel positions p(-1, -1..16)
|
PixelPos left[17]; //!< pixel positions p(-1, -1..16)
|
|
|
int up_avail, left_avail[2], left_up_avail;
|
int up_avail, left_avail[2], left_up_avail;
|
|
|
int cr_MB_x = img->mb_cr_size_x;
|
int cr_MB_x = img->mb_cr_size_x;
|
int cr_MB_y = img->mb_cr_size_y;
|
int cr_MB_y = img->mb_cr_size_y;
|
|
|
for (i=0;i<cr_MB_y+1;i++)
|
for (i=0;i<cr_MB_y+1;i++)
|
{
|
{
|
getNeighbour(mb_nr, -1, i-1, IS_CHROMA, &left[i]);
|
getNeighbour(mb_nr, -1, i-1, IS_CHROMA, &left[i]);
|
}
|
}
|
|
|
getNeighbour(mb_nr, 0, -1, IS_CHROMA, &up);
|
getNeighbour(mb_nr, 0, -1, IS_CHROMA, &up);
|
|
|
if (!active_pps->constrained_intra_pred_flag)
|
if (!active_pps->constrained_intra_pred_flag)
|
{
|
{
|
up_avail = up.available;
|
up_avail = up.available;
|
left_avail[0] = left_avail[1] = left[1].available;
|
left_avail[0] = left_avail[1] = left[1].available;
|
left_up_avail = left[0].available;
|
left_up_avail = left[0].available;
|
}
|
}
|
else
|
else
|
{
|
{
|
up_avail = up.available ? img->intra_block[up.mb_addr] : 0;
|
up_avail = up.available ? img->intra_block[up.mb_addr] : 0;
|
for (i=0, left_avail[0]=1; i<cr_MB_y/2;i++)
|
for (i=0, left_avail[0]=1; i<cr_MB_y/2;i++)
|
left_avail[0] &= left[i+1].available ? img->intra_block[left[i+1].mb_addr]: 0;
|
left_avail[0] &= left[i+1].available ? img->intra_block[left[i+1].mb_addr]: 0;
|
for (i=cr_MB_y/2, left_avail[1]=1; i<cr_MB_y;i++)
|
for (i=cr_MB_y/2, left_avail[1]=1; i<cr_MB_y;i++)
|
left_avail[1] &= left[i+1].available ? img->intra_block[left[i+1].mb_addr]: 0;
|
left_avail[1] &= left[i+1].available ? img->intra_block[left[i+1].mb_addr]: 0;
|
left_up_avail = left[0].available ? img->intra_block[left[0].mb_addr]: 0;
|
left_up_avail = left[0].available ? img->intra_block[left[0].mb_addr]: 0;
|
}
|
}
|
|
|
|
|
if (currMB->c_ipred_mode == DC_PRED_8)
|
if (currMB->c_ipred_mode == DC_PRED_8)
|
{
|
{
|
// DC prediction
|
// DC prediction
|
for(b8=0; b8<img->num_blk8x8_uv/2;b8++)
|
for(b8=0; b8<img->num_blk8x8_uv/2;b8++)
|
{
|
{
|
for (b4=0; b4<4; b4++)
|
for (b4=0; b4<4; b4++)
|
{
|
{
|
blk_y = subblk_offset_y[yuv][b8][b4] + 1;
|
blk_y = subblk_offset_y[yuv][b8][b4] + 1;
|
blk_x = subblk_offset_x[yuv][b8][b4];
|
blk_x = subblk_offset_x[yuv][b8][b4];
|
|
|
s0=s1=s2=s3=0;
|
s0=s1=s2=s3=0;
|
js[b8][b4]=img->dc_pred_value_chroma;
|
js[b8][b4]=img->dc_pred_value_chroma;
|
|
|
//===== get prediction value =====
|
//===== get prediction value =====
|
switch (block_pos[yuv][b8][b4])
|
switch (block_pos[yuv][b8][b4])
|
{
|
{
|
case 0: //===== TOP LEFT =====
|
case 0: //===== TOP LEFT =====
|
if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s0 += imgUV[uv][up.pos_y][up.pos_x + i];
|
if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s0 += imgUV[uv][up.pos_y][up.pos_x + i];
|
if (left_avail[0]) for (i=blk_y;i<(blk_y+4);i++) s2 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
if (left_avail[0]) for (i=blk_y;i<(blk_y+4);i++) s2 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
if (up_avail && left_avail[0]) js[b8][b4] = (s0+s2+4) >> 3;
|
if (up_avail && left_avail[0]) js[b8][b4] = (s0+s2+4) >> 3;
|
else if (up_avail) js[b8][b4] = (s0 +2) >> 2;
|
else if (up_avail) js[b8][b4] = (s0 +2) >> 2;
|
else if (left_avail[0]) js[b8][b4] = (s2 +2) >> 2;
|
else if (left_avail[0]) js[b8][b4] = (s2 +2) >> 2;
|
break;
|
break;
|
case 1: //===== TOP RIGHT =====
|
case 1: //===== TOP RIGHT =====
|
if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s1 += imgUV[uv][up.pos_y][up.pos_x + i];
|
if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s1 += imgUV[uv][up.pos_y][up.pos_x + i];
|
else if (left_avail[0]) for (i=blk_y;i<(blk_y+4);i++) s2 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
else if (left_avail[0]) for (i=blk_y;i<(blk_y+4);i++) s2 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
if (up_avail) js[b8][b4] = (s1 +2) >> 2;
|
if (up_avail) js[b8][b4] = (s1 +2) >> 2;
|
else if (left_avail[0]) js[b8][b4] = (s2 +2) >> 2;
|
else if (left_avail[0]) js[b8][b4] = (s2 +2) >> 2;
|
break;
|
break;
|
case 2: //===== BOTTOM LEFT =====
|
case 2: //===== BOTTOM LEFT =====
|
if (left_avail[1]) for (i=blk_y;i<(blk_y+4);i++) s3 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
if (left_avail[1]) for (i=blk_y;i<(blk_y+4);i++) s3 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
else if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s0 += imgUV[uv][up.pos_y][up.pos_x + i];
|
else if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s0 += imgUV[uv][up.pos_y][up.pos_x + i];
|
if (left_avail[1]) js[b8][b4] = (s3 +2) >> 2;
|
if (left_avail[1]) js[b8][b4] = (s3 +2) >> 2;
|
else if (up_avail) js[b8][b4] = (s0 +2) >> 2;
|
else if (up_avail) js[b8][b4] = (s0 +2) >> 2;
|
break;
|
break;
|
case 3: //===== BOTTOM RIGHT =====
|
case 3: //===== BOTTOM RIGHT =====
|
if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s1 += imgUV[uv][up.pos_y][up.pos_x + i];
|
if (up_avail) for (i=blk_x;i<(blk_x+4);i++) s1 += imgUV[uv][up.pos_y][up.pos_x + i];
|
if (left_avail[1]) for (i=blk_y;i<(blk_y+4);i++) s3 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
if (left_avail[1]) for (i=blk_y;i<(blk_y+4);i++) s3 += imgUV[uv][left[i].pos_y][left[i].pos_x];
|
if (up_avail && left_avail[1]) js[b8][b4] = (s1+s3+4) >> 3;
|
if (up_avail && left_avail[1]) js[b8][b4] = (s1+s3+4) >> 3;
|
else if (up_avail) js[b8][b4] = (s1 +2) >> 2;
|
else if (up_avail) js[b8][b4] = (s1 +2) >> 2;
|
else if (left_avail[1]) js[b8][b4] = (s3 +2) >> 2;
|
else if (left_avail[1]) js[b8][b4] = (s3 +2) >> 2;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
if (PLANE_8 == currMB->c_ipred_mode)
|
if (PLANE_8 == currMB->c_ipred_mode)
|
{
|
{
|
// plane prediction
|
// plane prediction
|
if (!left_up_avail || !left_avail[0] || !left_avail[1] || !up_avail)
|
if (!left_up_avail || !left_avail[0] || !left_avail[1] || !up_avail)
|
error("unexpected PLANE_8 chroma intra prediction mode",-1);
|
error("unexpected PLANE_8 chroma intra prediction mode",-1);
|
|
|
ih = cr_MB_x/2*(imgUV[uv][up.pos_y][up.pos_x+cr_MB_x-1] - imgUV[uv][left[0].pos_y][left[0].pos_x]);
|
ih = cr_MB_x/2*(imgUV[uv][up.pos_y][up.pos_x+cr_MB_x-1] - imgUV[uv][left[0].pos_y][left[0].pos_x]);
|
for (i=0;i<cr_MB_x/2-1;i++)
|
for (i=0;i<cr_MB_x/2-1;i++)
|
ih += (i+1)*(imgUV[uv][up.pos_y][up.pos_x+cr_MB_x/2 +i] -
|
ih += (i+1)*(imgUV[uv][up.pos_y][up.pos_x+cr_MB_x/2 +i] -
|
imgUV[uv][up.pos_y][up.pos_x+cr_MB_x/2-2-i]);
|
imgUV[uv][up.pos_y][up.pos_x+cr_MB_x/2-2-i]);
|
|
|
iv = cr_MB_y/2*(imgUV[uv][left[cr_MB_y].pos_y][left[cr_MB_y].pos_x] - imgUV[uv][left[0].pos_y][left[0].pos_x]);
|
iv = cr_MB_y/2*(imgUV[uv][left[cr_MB_y].pos_y][left[cr_MB_y].pos_x] - imgUV[uv][left[0].pos_y][left[0].pos_x]);
|
for (i=0;i<cr_MB_y/2-1;i++)
|
for (i=0;i<cr_MB_y/2-1;i++)
|
iv += (i+1)*(imgUV[uv][left[cr_MB_y/2+1+i].pos_y][left[cr_MB_y/2+1+i].pos_x] -
|
iv += (i+1)*(imgUV[uv][left[cr_MB_y/2+1+i].pos_y][left[cr_MB_y/2+1+i].pos_x] -
|
imgUV[uv][left[cr_MB_y/2-1-i].pos_y][left[cr_MB_y/2-1-i].pos_x]);
|
imgUV[uv][left[cr_MB_y/2-1-i].pos_y][left[cr_MB_y/2-1-i].pos_x]);
|
|
|
ib= ((cr_MB_x == 8?17:5)*ih+2*cr_MB_x)>>(cr_MB_x == 8?5:6);
|
ib= ((cr_MB_x == 8?17:5)*ih+2*cr_MB_x)>>(cr_MB_x == 8?5:6);
|
ic= ((cr_MB_y == 8?17:5)*iv+2*cr_MB_y)>>(cr_MB_y == 8?5:6);
|
ic= ((cr_MB_y == 8?17:5)*iv+2*cr_MB_y)>>(cr_MB_y == 8?5:6);
|
|
|
iaa=16*(imgUV[uv][left[cr_MB_y].pos_y][left[cr_MB_y].pos_x] +
|
iaa=16*(imgUV[uv][left[cr_MB_y].pos_y][left[cr_MB_y].pos_x] +
|
imgUV[uv][up.pos_y][up.pos_x+cr_MB_x-1]);
|
imgUV[uv][up.pos_y][up.pos_x+cr_MB_x-1]);
|
|
|
for (j=0; j<cr_MB_y; j++)
|
for (j=0; j<cr_MB_y; j++)
|
for (i=0; i<cr_MB_x; i++)
|
for (i=0; i<cr_MB_x; i++)
|
img->mpr[j][i]=(imgpel) iClip1(img->max_imgpel_value_uv,((iaa+(i-cr_MB_x/2+1)*ib+(j-cr_MB_y/2+1)*ic+16)>>5));
|
img->mpr[j][i]=(imgpel) iClip1(img->max_imgpel_value_uv,((iaa+(i-cr_MB_x/2+1)*ib+(j-cr_MB_y/2+1)*ic+16)>>5));
|
}
|
}
|
else
|
else
|
{
|
{
|
switch (currMB->c_ipred_mode)
|
switch (currMB->c_ipred_mode)
|
{
|
{
|
case DC_PRED_8:
|
case DC_PRED_8:
|
for (b8=0;b8<img->num_blk8x8_uv/2;b8++)
|
for (b8=0;b8<img->num_blk8x8_uv/2;b8++)
|
{
|
{
|
for (b4=0;b4<4;b4++)
|
for (b4=0;b4<4;b4++)
|
{
|
{
|
joff = subblk_offset_y[yuv][b8][b4];
|
joff = subblk_offset_y[yuv][b8][b4];
|
ioff = subblk_offset_x[yuv][b8][b4];
|
ioff = subblk_offset_x[yuv][b8][b4];
|
for (jj=joff; jj<joff + BLOCK_SIZE; jj++)
|
for (jj=joff; jj<joff + BLOCK_SIZE; jj++)
|
for (ii=ioff; ii<ioff + BLOCK_SIZE; ii++)
|
for (ii=ioff; ii<ioff + BLOCK_SIZE; ii++)
|
{
|
{
|
img->mpr[jj][ii]=(imgpel) js[b8][b4];
|
img->mpr[jj][ii]=(imgpel) js[b8][b4];
|
}
|
}
|
}
|
}
|
}
|
}
|
break;
|
break;
|
case HOR_PRED_8:
|
case HOR_PRED_8:
|
if (!left_avail[0] || !left_avail[1])
|
if (!left_avail[0] || !left_avail[1])
|
error("unexpected HOR_PRED_8 chroma intra prediction mode",-1);
|
error("unexpected HOR_PRED_8 chroma intra prediction mode",-1);
|
|
|
for (j=0;j<2;j++)
|
for (j=0;j<2;j++)
|
{
|
{
|
joff=j*cr_MB_y/2;
|
joff=j*cr_MB_y/2;
|
for(i=0;i<2;i++)
|
for(i=0;i<2;i++)
|
{
|
{
|
ioff=i*cr_MB_x/2;
|
ioff=i*cr_MB_x/2;
|
for (jj=joff; jj<joff + cr_MB_y/2; jj++)
|
for (jj=joff; jj<joff + cr_MB_y/2; jj++)
|
{
|
{
|
pred = imgUV[uv][left[1+jj].pos_y][left[1+jj].pos_x];
|
pred = imgUV[uv][left[1+jj].pos_y][left[1+jj].pos_x];
|
for (ii=ioff; ii<ioff + cr_MB_x/2; ii++)
|
for (ii=ioff; ii<ioff + cr_MB_x/2; ii++)
|
img->mpr[jj][ii]=(imgpel) pred;
|
img->mpr[jj][ii]=(imgpel) pred;
|
}
|
}
|
}
|
}
|
}
|
}
|
break;
|
break;
|
case VERT_PRED_8:
|
case VERT_PRED_8:
|
if (!up_avail)
|
if (!up_avail)
|
error("unexpected VERT_PRED_8 chroma intra prediction mode",-1);
|
error("unexpected VERT_PRED_8 chroma intra prediction mode",-1);
|
|
|
for (j=0;j<2;j++)
|
for (j=0;j<2;j++)
|
{
|
{
|
joff=j*cr_MB_y/2;
|
joff=j*cr_MB_y/2;
|
for(i=0;i<2;i++)
|
for(i=0;i<2;i++)
|
{
|
{
|
ioff=i*cr_MB_x/2;
|
ioff=i*cr_MB_x/2;
|
for (ii=ioff; ii<ioff + cr_MB_x/2; ii++)
|
for (ii=ioff; ii<ioff + cr_MB_x/2; ii++)
|
{
|
{
|
pred = imgUV[uv][up.pos_y][up.pos_x+ii];
|
pred = imgUV[uv][up.pos_y][up.pos_x+ii];
|
for (jj=joff; jj<joff + cr_MB_y/2; jj++)
|
for (jj=joff; jj<joff + cr_MB_y/2; jj++)
|
img->mpr[jj][ii]=(imgpel) pred;
|
img->mpr[jj][ii]=(imgpel) pred;
|
}
|
}
|
}
|
}
|
}
|
}
|
break;
|
break;
|
default:
|
default:
|
error("illegal chroma intra prediction mode", 600);
|
error("illegal chroma intra prediction mode", 600);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*!
|
/*!
|
***********************************************************************
|
***********************************************************************
|
* \brief
|
* \brief
|
* Inverse 4x4 transformation, transforms cof to m7
|
* Inverse 4x4 transformation, transforms cof to m7
|
***********************************************************************
|
***********************************************************************
|
*/
|
*/
|
void itrans(struct img_par *img, //!< image parameters
|
void itrans(struct img_par *img, //!< image parameters
|
int ioff, //!< index to 4x4 block
|
int ioff, //!< index to 4x4 block
|
int joff, //!<
|
int joff, //!<
|
int i0, //!<
|
int i0, //!<
|
int j0,
|
int j0,
|
int chroma)
|
int chroma)
|
{
|
{
|
int i,j;
|
int i,j;
|
int m5[4];
|
int m5[4];
|
int m6[4];
|
int m6[4];
|
|
|
Boolean lossless_qpprime = (Boolean) ((img->qp + img->bitdepth_luma_qp_scale)==0 && img->lossless_qpprime_flag==1);
|
Boolean lossless_qpprime = (Boolean) ((img->qp + img->bitdepth_luma_qp_scale)==0 && img->lossless_qpprime_flag==1);
|
int max_imgpel_value = chroma ? img->max_imgpel_value_uv : img->max_imgpel_value;
|
int max_imgpel_value = chroma ? img->max_imgpel_value_uv : img->max_imgpel_value;
|
|
|
if (!lossless_qpprime)
|
if (!lossless_qpprime)
|
{
|
{
|
// horizontal
|
// horizontal
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
{
|
{
|
memcpy(&m5[0],&img->cof[i0][j0][j][0], BLOCK_SIZE * sizeof(int));
|
memcpy(&m5[0],&img->cof[i0][j0][j][0], BLOCK_SIZE * sizeof(int));
|
|
|
m6[0] = m5[0] + m5[2];
|
m6[0] = m5[0] + m5[2];
|
m6[1] = m5[0] - m5[2];
|
m6[1] = m5[0] - m5[2];
|
m6[2] = (m5[1] >> 1) - m5[3];
|
m6[2] = (m5[1] >> 1) - m5[3];
|
m6[3] = m5[1] + (m5[3] >> 1);
|
m6[3] = m5[1] + (m5[3] >> 1);
|
|
|
img->m7[j][0] = m6[0] + m6[3];
|
img->m7[j][0] = m6[0] + m6[3];
|
img->m7[j][3] = m6[0] - m6[3];
|
img->m7[j][3] = m6[0] - m6[3];
|
img->m7[j][1] = m6[1] + m6[2];
|
img->m7[j][1] = m6[1] + m6[2];
|
img->m7[j][2] = m6[1] - m6[2];
|
img->m7[j][2] = m6[1] - m6[2];
|
}
|
}
|
// vertical
|
// vertical
|
for (i=0;i<BLOCK_SIZE;i++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
{
|
{
|
int ipos = i+ioff;
|
int ipos = i+ioff;
|
|
|
m5[0]=img->m7[0][i];
|
m5[0]=img->m7[0][i];
|
m5[1]=img->m7[1][i];
|
m5[1]=img->m7[1][i];
|
m5[2]=img->m7[2][i];
|
m5[2]=img->m7[2][i];
|
m5[3]=img->m7[3][i];
|
m5[3]=img->m7[3][i];
|
|
|
m6[0] = m5[0] + m5[2];
|
m6[0] = m5[0] + m5[2];
|
m6[1] = m5[0] - m5[2];
|
m6[1] = m5[0] - m5[2];
|
m6[2] = (m5[1]>>1) - m5[3];
|
m6[2] = (m5[1]>>1) - m5[3];
|
m6[3] = m5[1] + (m5[3]>>1);
|
m6[3] = m5[1] + (m5[3]>>1);
|
|
|
img->m7[0][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[0] + m6[3] + ((long)img->mpr[ joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[0][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[0] + m6[3] + ((long)img->mpr[ joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[1][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[1] + m6[2] + ((long)img->mpr[1 + joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[1][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[1] + m6[2] + ((long)img->mpr[1 + joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[2][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[1] - m6[2] + ((long)img->mpr[2 + joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[2][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[1] - m6[2] + ((long)img->mpr[2 + joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[3][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[0] - m6[3] + ((long)img->mpr[3 + joff][ipos] << DQ_BITS)), DQ_BITS));
|
img->m7[3][i] = iClip1(max_imgpel_value, rshift_rnd_sf((m6[0] - m6[3] + ((long)img->mpr[3 + joff][ipos] << DQ_BITS)), DQ_BITS));
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (i=0;i<BLOCK_SIZE ;i++)
|
for (i=0;i<BLOCK_SIZE ;i++)
|
img->m7[j][i] = iClip1(max_imgpel_value, (img->cof[i0][j0][j][i]+(long)img->mpr[j+joff][i+ioff]));
|
img->m7[j][i] = iClip1(max_imgpel_value, (img->cof[i0][j0][j][i]+(long)img->mpr[j+joff][i+ioff]));
|
}
|
}
|
}
|
}
|
|
|
/*!
|
/*!
|
************************************************************************
|
************************************************************************
|
* \brief
|
* \brief
|
* For mapping the q-matrix to the active id and calculate quantisation values
|
* For mapping the q-matrix to the active id and calculate quantisation values
|
*
|
*
|
* \param pps
|
* \param pps
|
* Picture parameter set
|
* Picture parameter set
|
* \param sps
|
* \param sps
|
* Sequence parameter set
|
* Sequence parameter set
|
*
|
*
|
************************************************************************
|
************************************************************************
|
*/
|
*/
|
void AssignQuantParam(pic_parameter_set_rbsp_t* pps, seq_parameter_set_rbsp_t* sps)
|
void AssignQuantParam(pic_parameter_set_rbsp_t* pps, seq_parameter_set_rbsp_t* sps)
|
{
|
{
|
int i;
|
int i;
|
|
|
if(!pps->pic_scaling_matrix_present_flag && !sps->seq_scaling_matrix_present_flag)
|
if(!pps->pic_scaling_matrix_present_flag && !sps->seq_scaling_matrix_present_flag)
|
{
|
{
|
for(i=0; i<8; i++)
|
for(i=0; i<8; i++)
|
qmatrix[i] = (i<6) ? quant_org:quant8_org;
|
qmatrix[i] = (i<6) ? quant_org:quant8_org;
|
}
|
}
|
else
|
else
|
{
|
{
|
if(sps->seq_scaling_matrix_present_flag) // check sps first
|
if(sps->seq_scaling_matrix_present_flag) // check sps first
|
{
|
{
|
for(i=0; i<8; i++)
|
for(i=0; i<8; i++)
|
{
|
{
|
if(i<6)
|
if(i<6)
|
{
|
{
|
if(!sps->seq_scaling_list_present_flag[i]) // fall-back rule A
|
if(!sps->seq_scaling_list_present_flag[i]) // fall-back rule A
|
{
|
{
|
if((i==0) || (i==3))
|
if((i==0) || (i==3))
|
qmatrix[i] = (i==0) ? quant_intra_default:quant_inter_default;
|
qmatrix[i] = (i==0) ? quant_intra_default:quant_inter_default;
|
else
|
else
|
qmatrix[i] = qmatrix[i-1];
|
qmatrix[i] = qmatrix[i-1];
|
}
|
}
|
else
|
else
|
{
|
{
|
if(sps->UseDefaultScalingMatrix4x4Flag[i])
|
if(sps->UseDefaultScalingMatrix4x4Flag[i])
|
qmatrix[i] = (i<3) ? quant_intra_default:quant_inter_default;
|
qmatrix[i] = (i<3) ? quant_intra_default:quant_inter_default;
|
else
|
else
|
qmatrix[i] = sps->ScalingList4x4[i];
|
qmatrix[i] = sps->ScalingList4x4[i];
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if(!sps->seq_scaling_list_present_flag[i] || sps->UseDefaultScalingMatrix8x8Flag[i-6]) // fall-back rule A
|
if(!sps->seq_scaling_list_present_flag[i] || sps->UseDefaultScalingMatrix8x8Flag[i-6]) // fall-back rule A
|
qmatrix[i] = (i==6) ? quant8_intra_default:quant8_inter_default;
|
qmatrix[i] = (i==6) ? quant8_intra_default:quant8_inter_default;
|
else
|
else
|
qmatrix[i] = sps->ScalingList8x8[i-6];
|
qmatrix[i] = sps->ScalingList8x8[i-6];
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if(pps->pic_scaling_matrix_present_flag) // then check pps
|
if(pps->pic_scaling_matrix_present_flag) // then check pps
|
{
|
{
|
for(i=0; i<8; i++)
|
for(i=0; i<8; i++)
|
{
|
{
|
if(i<6)
|
if(i<6)
|
{
|
{
|
if(!pps->pic_scaling_list_present_flag[i]) // fall-back rule B
|
if(!pps->pic_scaling_list_present_flag[i]) // fall-back rule B
|
{
|
{
|
if((i==0) || (i==3))
|
if((i==0) || (i==3))
|
{
|
{
|
if(!sps->seq_scaling_matrix_present_flag)
|
if(!sps->seq_scaling_matrix_present_flag)
|
qmatrix[i] = (i==0) ? quant_intra_default:quant_inter_default;
|
qmatrix[i] = (i==0) ? quant_intra_default:quant_inter_default;
|
}
|
}
|
else
|
else
|
qmatrix[i] = qmatrix[i-1];
|
qmatrix[i] = qmatrix[i-1];
|
}
|
}
|
else
|
else
|
{
|
{
|
if(pps->UseDefaultScalingMatrix4x4Flag[i])
|
if(pps->UseDefaultScalingMatrix4x4Flag[i])
|
qmatrix[i] = (i<3) ? quant_intra_default:quant_inter_default;
|
qmatrix[i] = (i<3) ? quant_intra_default:quant_inter_default;
|
else
|
else
|
qmatrix[i] = pps->ScalingList4x4[i];
|
qmatrix[i] = pps->ScalingList4x4[i];
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if(!pps->pic_scaling_list_present_flag[i]) // fall-back rule B
|
if(!pps->pic_scaling_list_present_flag[i]) // fall-back rule B
|
{
|
{
|
if(!sps->seq_scaling_matrix_present_flag)
|
if(!sps->seq_scaling_matrix_present_flag)
|
qmatrix[i] = (i==6) ? quant8_intra_default:quant8_inter_default;
|
qmatrix[i] = (i==6) ? quant8_intra_default:quant8_inter_default;
|
}
|
}
|
else if(pps->UseDefaultScalingMatrix8x8Flag[i-6])
|
else if(pps->UseDefaultScalingMatrix8x8Flag[i-6])
|
qmatrix[i] = (i==6) ? quant8_intra_default:quant8_inter_default;
|
qmatrix[i] = (i==6) ? quant8_intra_default:quant8_inter_default;
|
else
|
else
|
qmatrix[i] = pps->ScalingList8x8[i-6];
|
qmatrix[i] = pps->ScalingList8x8[i-6];
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
CalculateQuantParam();
|
CalculateQuantParam();
|
if(pps->transform_8x8_mode_flag)
|
if(pps->transform_8x8_mode_flag)
|
CalculateQuant8Param();
|
CalculateQuant8Param();
|
}
|
}
|
|
|
/*!
|
/*!
|
************************************************************************
|
************************************************************************
|
* \brief
|
* \brief
|
* For calculating the quantisation values at frame level
|
* For calculating the quantisation values at frame level
|
*
|
*
|
************************************************************************
|
************************************************************************
|
*/
|
*/
|
void CalculateQuantParam()
|
void CalculateQuantParam()
|
{
|
{
|
int i, j, k, temp;
|
int i, j, k, temp;
|
|
|
for(k=0; k<6; k++)
|
for(k=0; k<6; k++)
|
for(j=0; j<4; j++)
|
for(j=0; j<4; j++)
|
for(i=0; i<4; i++)
|
for(i=0; i<4; i++)
|
{
|
{
|
temp = (i<<2)+j;
|
temp = (i<<2)+j;
|
InvLevelScale4x4Luma_Intra[k][i][j] = dequant_coef[k][j][i]*qmatrix[0][temp];
|
InvLevelScale4x4Luma_Intra[k][i][j] = dequant_coef[k][j][i]*qmatrix[0][temp];
|
InvLevelScale4x4Chroma_Intra[0][k][i][j] = dequant_coef[k][j][i]*qmatrix[1][temp];
|
InvLevelScale4x4Chroma_Intra[0][k][i][j] = dequant_coef[k][j][i]*qmatrix[1][temp];
|
InvLevelScale4x4Chroma_Intra[1][k][i][j] = dequant_coef[k][j][i]*qmatrix[2][temp];
|
InvLevelScale4x4Chroma_Intra[1][k][i][j] = dequant_coef[k][j][i]*qmatrix[2][temp];
|
|
|
InvLevelScale4x4Luma_Inter[k][i][j] = dequant_coef[k][j][i]*qmatrix[3][temp];
|
InvLevelScale4x4Luma_Inter[k][i][j] = dequant_coef[k][j][i]*qmatrix[3][temp];
|
InvLevelScale4x4Chroma_Inter[0][k][i][j] = dequant_coef[k][j][i]*qmatrix[4][temp];
|
InvLevelScale4x4Chroma_Inter[0][k][i][j] = dequant_coef[k][j][i]*qmatrix[4][temp];
|
InvLevelScale4x4Chroma_Inter[1][k][i][j] = dequant_coef[k][j][i]*qmatrix[5][temp];
|
InvLevelScale4x4Chroma_Inter[1][k][i][j] = dequant_coef[k][j][i]*qmatrix[5][temp];
|
}
|
}
|
}
|
}
|
|
|
/*!
|
/*!
|
***********************************************************************
|
***********************************************************************
|
* \brief
|
* \brief
|
* Luma DC inverse transform
|
* Luma DC inverse transform
|
***********************************************************************
|
***********************************************************************
|
*/
|
*/
|
void itrans_2(struct img_par *img) //!< image parameters
|
void itrans_2(struct img_par *img) //!< image parameters
|
{
|
{
|
int i,j;
|
int i,j;
|
int M5[4];
|
int M5[4];
|
int M6[4];
|
int M6[4];
|
|
|
int qp_per = (img->qp + img->bitdepth_luma_qp_scale - MIN_QP)/6;
|
int qp_per = (img->qp + img->bitdepth_luma_qp_scale - MIN_QP)/6;
|
int qp_rem = (img->qp + img->bitdepth_luma_qp_scale - MIN_QP)%6;
|
int qp_rem = (img->qp + img->bitdepth_luma_qp_scale - MIN_QP)%6;
|
|
|
// horizontal
|
// horizontal
|
for (j=0;j<4;j++)
|
for (j=0;j<4;j++)
|
{
|
{
|
M5[0]=img->cof[0][j][0][0];
|
M5[0]=img->cof[0][j][0][0];
|
M5[1]=img->cof[1][j][0][0];
|
M5[1]=img->cof[1][j][0][0];
|
M5[2]=img->cof[2][j][0][0];
|
M5[2]=img->cof[2][j][0][0];
|
M5[3]=img->cof[3][j][0][0];
|
M5[3]=img->cof[3][j][0][0];
|
|
|
M6[0]=M5[0]+M5[2];
|
M6[0]=M5[0]+M5[2];
|
M6[1]=M5[0]-M5[2];
|
M6[1]=M5[0]-M5[2];
|
M6[2]=M5[1]-M5[3];
|
M6[2]=M5[1]-M5[3];
|
M6[3]=M5[1]+M5[3];
|
M6[3]=M5[1]+M5[3];
|
|
|
img->cof[0][j][0][0] = M6[0]+M6[3];
|
img->cof[0][j][0][0] = M6[0]+M6[3];
|
img->cof[1][j][0][0] = M6[1]+M6[2];
|
img->cof[1][j][0][0] = M6[1]+M6[2];
|
img->cof[2][j][0][0] = M6[1]-M6[2];
|
img->cof[2][j][0][0] = M6[1]-M6[2];
|
img->cof[3][j][0][0] = M6[0]-M6[3];
|
img->cof[3][j][0][0] = M6[0]-M6[3];
|
}
|
}
|
|
|
// vertical
|
// vertical
|
for (i=0;i<4;i++)
|
for (i=0;i<4;i++)
|
{
|
{
|
M5[0]=img->cof[i][0][0][0];
|
M5[0]=img->cof[i][0][0][0];
|
M5[1]=img->cof[i][1][0][0];
|
M5[1]=img->cof[i][1][0][0];
|
M5[2]=img->cof[i][2][0][0];
|
M5[2]=img->cof[i][2][0][0];
|
M5[3]=img->cof[i][3][0][0];
|
M5[3]=img->cof[i][3][0][0];
|
|
|
M6[0]=M5[0]+M5[2];
|
M6[0]=M5[0]+M5[2];
|
M6[1]=M5[0]-M5[2];
|
M6[1]=M5[0]-M5[2];
|
M6[2]=M5[1]-M5[3];
|
M6[2]=M5[1]-M5[3];
|
M6[3]=M5[1]+M5[3];
|
M6[3]=M5[1]+M5[3];
|
|
|
img->cof[i][0][0][0] = rshift_rnd((((M6[0]+M6[3])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][0][0][0] = rshift_rnd((((M6[0]+M6[3])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][1][0][0] = rshift_rnd((((M6[1]+M6[2])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][1][0][0] = rshift_rnd((((M6[1]+M6[2])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][2][0][0] = rshift_rnd((((M6[1]-M6[2])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][2][0][0] = rshift_rnd((((M6[1]-M6[2])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][3][0][0] = rshift_rnd((((M6[0]-M6[3])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
img->cof[i][3][0][0] = rshift_rnd((((M6[0]-M6[3])*InvLevelScale4x4Luma_Intra[qp_rem][0][0]) << qp_per), 6);
|
}
|
}
|
}
|
}
|
|
|
|
|
void itrans_sp(struct img_par *img, //!< image parameters
|
void itrans_sp(struct img_par *img, //!< image parameters
|
int ioff, //!< index to 4x4 block
|
int ioff, //!< index to 4x4 block
|
int joff, //!<
|
int joff, //!<
|
int i0, //!<
|
int i0, //!<
|
int j0) //!<
|
int j0) //!<
|
{
|
{
|
int i,j,i1,j1;
|
int i,j,i1,j1;
|
int m5[4];
|
int m5[4];
|
int m6[4];
|
int m6[4];
|
int predicted_block[BLOCK_SIZE][BLOCK_SIZE],ilev;
|
int predicted_block[BLOCK_SIZE][BLOCK_SIZE],ilev;
|
|
|
int qp_per = (img->qp-MIN_QP)/6;
|
int qp_per = (img->qp-MIN_QP)/6;
|
int qp_rem = (img->qp-MIN_QP)%6;
|
int qp_rem = (img->qp-MIN_QP)%6;
|
int q_bits = Q_BITS+qp_per;
|
int q_bits = Q_BITS+qp_per;
|
|
|
int qp_per_sp = (img->qpsp-MIN_QP)/6;
|
int qp_per_sp = (img->qpsp-MIN_QP)/6;
|
int qp_rem_sp = (img->qpsp-MIN_QP)%6;
|
int qp_rem_sp = (img->qpsp-MIN_QP)%6;
|
int q_bits_sp = Q_BITS+qp_per_sp;
|
int q_bits_sp = Q_BITS+qp_per_sp;
|
int qp_const2 = (1<<q_bits_sp)/2; //sp_pred
|
int qp_const2 = (1<<q_bits_sp)/2; //sp_pred
|
if (img->type == SI_SLICE) //ES modified
|
if (img->type == SI_SLICE) //ES modified
|
{
|
{
|
qp_per = (img->qpsp-MIN_QP)/6;
|
qp_per = (img->qpsp-MIN_QP)/6;
|
qp_rem = (img->qpsp-MIN_QP)%6;
|
qp_rem = (img->qpsp-MIN_QP)%6;
|
q_bits = Q_BITS+qp_per;
|
q_bits = Q_BITS+qp_per;
|
}
|
}
|
|
|
for (j=0; j< BLOCK_SIZE; j++)
|
for (j=0; j< BLOCK_SIZE; j++)
|
for (i=0; i< BLOCK_SIZE; i++)
|
for (i=0; i< BLOCK_SIZE; i++)
|
predicted_block[i][j]=img->mpr[j+joff][i+ioff];
|
predicted_block[i][j]=img->mpr[j+joff][i+ioff];
|
for (j=0; j < BLOCK_SIZE; j++)
|
for (j=0; j < BLOCK_SIZE; j++)
|
{
|
{
|
for (i=0; i < 2; i++)
|
for (i=0; i < 2; i++)
|
{
|
{
|
i1=3-i;
|
i1=3-i;
|
m5[i]=predicted_block[i][j]+predicted_block[i1][j];
|
m5[i]=predicted_block[i][j]+predicted_block[i1][j];
|
m5[i1]=predicted_block[i][j]-predicted_block[i1][j];
|
m5[i1]=predicted_block[i][j]-predicted_block[i1][j];
|
}
|
}
|
predicted_block[0][j]=(m5[0]+m5[1]);
|
predicted_block[0][j]=(m5[0]+m5[1]);
|
predicted_block[2][j]=(m5[0]-m5[1]);
|
predicted_block[2][j]=(m5[0]-m5[1]);
|
predicted_block[1][j]=m5[3]*2+m5[2];
|
predicted_block[1][j]=m5[3]*2+m5[2];
|
predicted_block[3][j]=m5[3]-m5[2]*2;
|
predicted_block[3][j]=m5[3]-m5[2]*2;
|
}
|
}
|
|
|
// Vertival transform
|
// Vertival transform
|
|
|
for (i=0; i < BLOCK_SIZE; i++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
{
|
{
|
for (j=0; j < 2; j++)
|
for (j=0; j < 2; j++)
|
{
|
{
|
j1=3-j;
|
j1=3-j;
|
m5[j]=predicted_block[i][j]+predicted_block[i][j1];
|
m5[j]=predicted_block[i][j]+predicted_block[i][j1];
|
m5[j1]=predicted_block[i][j]-predicted_block[i][j1];
|
m5[j1]=predicted_block[i][j]-predicted_block[i][j1];
|
}
|
}
|
predicted_block[i][0]=(m5[0]+m5[1]);
|
predicted_block[i][0]=(m5[0]+m5[1]);
|
predicted_block[i][2]=(m5[0]-m5[1]);
|
predicted_block[i][2]=(m5[0]-m5[1]);
|
predicted_block[i][1]=m5[3]*2+m5[2];
|
predicted_block[i][1]=m5[3]*2+m5[2];
|
predicted_block[i][3]=m5[3]-m5[2]*2;
|
predicted_block[i][3]=m5[3]-m5[2]*2;
|
}
|
}
|
|
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
{
|
{
|
// recovering coefficient since they are already dequantized earlier
|
// recovering coefficient since they are already dequantized earlier
|
img->cof[i0][j0][j][i]=(img->cof[i0][j0][j][i] >> qp_per) / dequant_coef[qp_rem][i][j];
|
img->cof[i0][j0][j][i]=(img->cof[i0][j0][j][i] >> qp_per) / dequant_coef[qp_rem][i][j];
|
if(img->sp_switch || img->type==SI_SLICE) //M.W. patched for SI
|
if(img->sp_switch || img->type==SI_SLICE) //M.W. patched for SI
|
{
|
{
|
ilev=(iabs(predicted_block[i][j]) * quant_coef[qp_rem_sp][i][j] + qp_const2) >> q_bits_sp; //ES added
|
ilev=(iabs(predicted_block[i][j]) * quant_coef[qp_rem_sp][i][j] + qp_const2) >> q_bits_sp; //ES added
|
ilev= isignab(ilev,predicted_block[i][j])+ img->cof[i0][j0][j][i]; //ES added
|
ilev= isignab(ilev,predicted_block[i][j])+ img->cof[i0][j0][j][i]; //ES added
|
img->cof[i0][j0][j][i] = isignab(iabs(ilev) * dequant_coef[qp_rem_sp][i][j] << qp_per_sp ,ilev) ; //ES added
|
img->cof[i0][j0][j][i] = isignab(iabs(ilev) * dequant_coef[qp_rem_sp][i][j] << qp_per_sp ,ilev) ; //ES added
|
} //ES added
|
} //ES added
|
else
|
else
|
{ //ES added
|
{ //ES added
|
ilev=((img->cof[i0][j0][j][i]*dequant_coef[qp_rem][i][j]*A[i][j]<< qp_per) >>6)+predicted_block[i][j] ;
|
ilev=((img->cof[i0][j0][j][i]*dequant_coef[qp_rem][i][j]*A[i][j]<< qp_per) >>6)+predicted_block[i][j] ;
|
img->cof[i0][j0][j][i]=isignab((iabs(ilev) * quant_coef[qp_rem_sp][i][j] + qp_const2) >> q_bits_sp, ilev) * dequant_coef[qp_rem_sp][i][j] << qp_per_sp;
|
img->cof[i0][j0][j][i]=isignab((iabs(ilev) * quant_coef[qp_rem_sp][i][j] + qp_const2) >> q_bits_sp, ilev) * dequant_coef[qp_rem_sp][i][j] << qp_per_sp;
|
}
|
}
|
}
|
}
|
// horizontal
|
// horizontal
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
{
|
{
|
for (i=0;i<BLOCK_SIZE;i++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
{
|
{
|
m5[i]=img->cof[i0][j0][j][i];
|
m5[i]=img->cof[i0][j0][j][i];
|
}
|
}
|
m6[0]=(m5[0]+m5[2]);
|
m6[0]=(m5[0]+m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[3]=m5[1]+(m5[3]>>1);
|
m6[3]=m5[1]+(m5[3]>>1);
|
|
|
for (i=0;i<2;i++)
|
for (i=0;i<2;i++)
|
{
|
{
|
i1=3-i;
|
i1=3-i;
|
img->m7[j][i]=m6[i]+m6[i1];
|
img->m7[j][i]=m6[i]+m6[i1];
|
img->m7[j][i1]=m6[i]-m6[i1];
|
img->m7[j][i1]=m6[i]-m6[i1];
|
}
|
}
|
}
|
}
|
// vertical
|
// vertical
|
for (i=0;i<BLOCK_SIZE;i++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
{
|
{
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
m5[j]=img->m7[j][i];
|
m5[j]=img->m7[j][i];
|
|
|
m6[0]=(m5[0]+m5[2]);
|
m6[0]=(m5[0]+m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[3]=m5[1]+(m5[3]>>1);
|
m6[3]=m5[1]+(m5[3]>>1);
|
|
|
for (j=0;j<2;j++)
|
for (j=0;j<2;j++)
|
{
|
{
|
j1=3-j;
|
j1=3-j;
|
img->m7[j][i] =iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]+m6[j1]),DQ_BITS));
|
img->m7[j][i] =iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]+m6[j1]),DQ_BITS));
|
img->m7[j1][i]=iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]-m6[j1]),DQ_BITS));
|
img->m7[j1][i]=iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]-m6[j1]),DQ_BITS));
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*!
|
/*!
|
***********************************************************************
|
***********************************************************************
|
* \brief
|
* \brief
|
* The routine performs transform,quantization,inverse transform, adds the diff.
|
* The routine performs transform,quantization,inverse transform, adds the diff.
|
* to the prediction and writes the result to the decoded luma frame. Includes the
|
* to the prediction and writes the result to the decoded luma frame. Includes the
|
* RD constrained quantization also.
|
* RD constrained quantization also.
|
*
|
*
|
* \par Input:
|
* \par Input:
|
* block_x,block_y: Block position inside a macro block (0,4,8,12).
|
* block_x,block_y: Block position inside a macro block (0,4,8,12).
|
*
|
*
|
* \par Output:
|
* \par Output:
|
* nonzero: 0 if no levels are nonzero. 1 if there are nonzero levels. \n
|
* nonzero: 0 if no levels are nonzero. 1 if there are nonzero levels. \n
|
* coeff_cost: Counter for nonzero coefficients, used to discard expencive levels.
|
* coeff_cost: Counter for nonzero coefficients, used to discard expencive levels.
|
************************************************************************
|
************************************************************************
|
*/
|
*/
|
void copyblock_sp(struct img_par *img,int block_x,int block_y)
|
void copyblock_sp(struct img_par *img,int block_x,int block_y)
|
{
|
{
|
int i,j,i1,j1,m5[4],m6[4];
|
int i,j,i1,j1,m5[4],m6[4];
|
|
|
int predicted_block[BLOCK_SIZE][BLOCK_SIZE];
|
int predicted_block[BLOCK_SIZE][BLOCK_SIZE];
|
int qp_per = (img->qpsp-MIN_QP)/6;
|
int qp_per = (img->qpsp-MIN_QP)/6;
|
int qp_rem = (img->qpsp-MIN_QP)%6;
|
int qp_rem = (img->qpsp-MIN_QP)%6;
|
int q_bits = Q_BITS+qp_per;
|
int q_bits = Q_BITS+qp_per;
|
int qp_const2=(1<<q_bits)/2; //sp_pred
|
int qp_const2=(1<<q_bits)/2; //sp_pred
|
|
|
|
|
// Horizontal transform
|
// Horizontal transform
|
for (j=0; j< BLOCK_SIZE; j++)
|
for (j=0; j< BLOCK_SIZE; j++)
|
for (i=0; i< BLOCK_SIZE; i++)
|
for (i=0; i< BLOCK_SIZE; i++)
|
predicted_block[i][j]=img->mpr[j+block_y][i+block_x];
|
predicted_block[i][j]=img->mpr[j+block_y][i+block_x];
|
|
|
for (j=0; j < BLOCK_SIZE; j++)
|
for (j=0; j < BLOCK_SIZE; j++)
|
{
|
{
|
for (i=0; i < 2; i++)
|
for (i=0; i < 2; i++)
|
{
|
{
|
i1=3-i;
|
i1=3-i;
|
m5[i]=predicted_block[i][j]+predicted_block[i1][j];
|
m5[i]=predicted_block[i][j]+predicted_block[i1][j];
|
m5[i1]=predicted_block[i][j]-predicted_block[i1][j];
|
m5[i1]=predicted_block[i][j]-predicted_block[i1][j];
|
}
|
}
|
predicted_block[0][j]=(m5[0]+m5[1]);
|
predicted_block[0][j]=(m5[0]+m5[1]);
|
predicted_block[2][j]=(m5[0]-m5[1]);
|
predicted_block[2][j]=(m5[0]-m5[1]);
|
predicted_block[1][j]=m5[3]*2+m5[2];
|
predicted_block[1][j]=m5[3]*2+m5[2];
|
predicted_block[3][j]=m5[3]-m5[2]*2;
|
predicted_block[3][j]=m5[3]-m5[2]*2;
|
}
|
}
|
|
|
// Vertival transform
|
// Vertival transform
|
|
|
for (i=0; i < BLOCK_SIZE; i++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
{
|
{
|
for (j=0; j < 2; j++)
|
for (j=0; j < 2; j++)
|
{
|
{
|
j1=3-j;
|
j1=3-j;
|
m5[j]=predicted_block[i][j]+predicted_block[i][j1];
|
m5[j]=predicted_block[i][j]+predicted_block[i][j1];
|
m5[j1]=predicted_block[i][j]-predicted_block[i][j1];
|
m5[j1]=predicted_block[i][j]-predicted_block[i][j1];
|
}
|
}
|
predicted_block[i][0]=(m5[0]+m5[1]);
|
predicted_block[i][0]=(m5[0]+m5[1]);
|
predicted_block[i][2]=(m5[0]-m5[1]);
|
predicted_block[i][2]=(m5[0]-m5[1]);
|
predicted_block[i][1]=m5[3]*2+m5[2];
|
predicted_block[i][1]=m5[3]*2+m5[2];
|
predicted_block[i][3]=m5[3]-m5[2]*2;
|
predicted_block[i][3]=m5[3]-m5[2]*2;
|
}
|
}
|
|
|
// Quant
|
// Quant
|
for (j=0;j < BLOCK_SIZE; j++)
|
for (j=0;j < BLOCK_SIZE; j++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
img->m7[j][i]=isignab((iabs(predicted_block[i][j])* quant_coef[qp_rem][i][j]+qp_const2)>> q_bits,predicted_block[i][j])*dequant_coef[qp_rem][i][j]<<qp_per;
|
img->m7[j][i]=isignab((iabs(predicted_block[i][j])* quant_coef[qp_rem][i][j]+qp_const2)>> q_bits,predicted_block[i][j])*dequant_coef[qp_rem][i][j]<<qp_per;
|
|
|
// IDCT.
|
// IDCT.
|
// horizontal
|
// horizontal
|
|
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
{
|
{
|
for (i=0;i<BLOCK_SIZE;i++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
{
|
{
|
m5[i]=img->m7[j][i];
|
m5[i]=img->m7[j][i];
|
}
|
}
|
m6[0]=(m5[0]+m5[2]);
|
m6[0]=(m5[0]+m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[3]=m5[1]+(m5[3]>>1);
|
m6[3]=m5[1]+(m5[3]>>1);
|
|
|
for (i=0;i<2;i++)
|
for (i=0;i<2;i++)
|
{
|
{
|
i1=3-i;
|
i1=3-i;
|
img->m7[j][i]=m6[i]+m6[i1];
|
img->m7[j][i]=m6[i]+m6[i1];
|
img->m7[j][i1]=m6[i]-m6[i1];
|
img->m7[j][i1]=m6[i]-m6[i1];
|
}
|
}
|
}
|
}
|
// vertical
|
// vertical
|
for (i=0;i<BLOCK_SIZE;i++)
|
for (i=0;i<BLOCK_SIZE;i++)
|
{
|
{
|
for (j=0;j<BLOCK_SIZE;j++)
|
for (j=0;j<BLOCK_SIZE;j++)
|
m5[j]=img->m7[j][i];
|
m5[j]=img->m7[j][i];
|
|
|
m6[0]=(m5[0]+m5[2]);
|
m6[0]=(m5[0]+m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[1]=(m5[0]-m5[2]);
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[2]=(m5[1]>>1)-m5[3];
|
m6[3]=m5[1]+(m5[3]>>1);
|
m6[3]=m5[1]+(m5[3]>>1);
|
|
|
for (j=0;j<2;j++)
|
for (j=0;j<2;j++)
|
{
|
{
|
j1=3-j;
|
j1=3-j;
|
img->m7[j][i] =iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]+m6[j1]),DQ_BITS));
|
img->m7[j][i] =iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]+m6[j1]),DQ_BITS));
|
img->m7[j1][i]=iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]-m6[j1]),DQ_BITS));
|
img->m7[j1][i]=iClip1(img->max_imgpel_value,rshift_rnd_sf((m6[j]-m6[j1]),DQ_BITS));
|
}
|
}
|
}
|
}
|
|
|
// Decoded block moved to frame memory
|
// Decoded block moved to frame memory
|
|
|
for (j=0; j < BLOCK_SIZE; j++)
|
for (j=0; j < BLOCK_SIZE; j++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
dec_picture->imgY[img->pix_y+block_y+j][img->pix_x+block_x+i]=(imgpel) img->m7[j][i];
|
dec_picture->imgY[img->pix_y+block_y+j][img->pix_x+block_x+i]=(imgpel) img->m7[j][i];
|
|
|
}
|
}
|
|
|
void itrans_sp_chroma(struct img_par *img,int ll)
|
void itrans_sp_chroma(struct img_par *img,int ll)
|
{
|
{
|
int i,j,i1,j2,ilev,n2,n1,j1,mb_y;
|
int i,j,i1,j2,ilev,n2,n1,j1,mb_y;
|
int m5[BLOCK_SIZE];
|
int m5[BLOCK_SIZE];
|
int predicted_chroma_block[MB_BLOCK_SIZE/2][MB_BLOCK_SIZE/2],mp1[BLOCK_SIZE];
|
int predicted_chroma_block[MB_BLOCK_SIZE/2][MB_BLOCK_SIZE/2],mp1[BLOCK_SIZE];
|
int qp_per,qp_rem,q_bits;
|
int qp_per,qp_rem,q_bits;
|
int qp_per_sp,qp_rem_sp,q_bits_sp,qp_const2;
|
int qp_per_sp,qp_rem_sp,q_bits_sp,qp_const2;
|
|
|
qp_per = ((img->qp<0?img->qp:QP_SCALE_CR[img->qp])-MIN_QP)/6;
|
qp_per = ((img->qp<0?img->qp:QP_SCALE_CR[img->qp])-MIN_QP)/6;
|
qp_rem = ((img->qp<0?img->qp:QP_SCALE_CR[img->qp])-MIN_QP)%6;
|
qp_rem = ((img->qp<0?img->qp:QP_SCALE_CR[img->qp])-MIN_QP)%6;
|
q_bits = Q_BITS+qp_per;
|
q_bits = Q_BITS+qp_per;
|
|
|
qp_per_sp = ((img->qpsp<0?img->qpsp:QP_SCALE_CR[img->qpsp])-MIN_QP)/6;
|
qp_per_sp = ((img->qpsp<0?img->qpsp:QP_SCALE_CR[img->qpsp])-MIN_QP)/6;
|
qp_rem_sp = ((img->qpsp<0?img->qpsp:QP_SCALE_CR[img->qpsp])-MIN_QP)%6;
|
qp_rem_sp = ((img->qpsp<0?img->qpsp:QP_SCALE_CR[img->qpsp])-MIN_QP)%6;
|
q_bits_sp = Q_BITS+qp_per_sp;
|
q_bits_sp = Q_BITS+qp_per_sp;
|
qp_const2=(1<<q_bits_sp)/2; //sp_pred
|
qp_const2=(1<<q_bits_sp)/2; //sp_pred
|
|
|
if (img->type == SI_SLICE)
|
if (img->type == SI_SLICE)
|
{
|
{
|
qp_per = ((img->qpsp < 0 ? img->qpsp : QP_SCALE_CR[img->qpsp]) - MIN_QP) / 6;
|
qp_per = ((img->qpsp < 0 ? img->qpsp : QP_SCALE_CR[img->qpsp]) - MIN_QP) / 6;
|
qp_rem = ((img->qpsp < 0 ? img->qpsp : QP_SCALE_CR[img->qpsp]) - MIN_QP) % 6;
|
qp_rem = ((img->qpsp < 0 ? img->qpsp : QP_SCALE_CR[img->qpsp]) - MIN_QP) % 6;
|
q_bits = Q_BITS + qp_per;
|
q_bits = Q_BITS + qp_per;
|
}
|
}
|
|
|
for (j=0; j < MB_BLOCK_SIZE/2; j++)
|
for (j=0; j < MB_BLOCK_SIZE/2; j++)
|
for (i=0; i < MB_BLOCK_SIZE/2; i++)
|
for (i=0; i < MB_BLOCK_SIZE/2; i++)
|
{
|
{
|
predicted_chroma_block[i][j]=img->mpr[j][i];
|
predicted_chroma_block[i][j]=img->mpr[j][i];
|
img->mpr[j][i]=0;
|
img->mpr[j][i]=0;
|
}
|
}
|
for (n2=0; n2 <= BLOCK_SIZE; n2 += BLOCK_SIZE)
|
for (n2=0; n2 <= BLOCK_SIZE; n2 += BLOCK_SIZE)
|
{
|
{
|
for (n1=0; n1 <= BLOCK_SIZE; n1 += BLOCK_SIZE)
|
for (n1=0; n1 <= BLOCK_SIZE; n1 += BLOCK_SIZE)
|
{
|
{
|
// Horizontal transform.
|
// Horizontal transform.
|
for (j=0; j < BLOCK_SIZE; j++)
|
for (j=0; j < BLOCK_SIZE; j++)
|
{
|
{
|
mb_y=n2+j;
|
mb_y=n2+j;
|
for (i=0; i < 2; i++)
|
for (i=0; i < 2; i++)
|
{
|
{
|
i1=3-i;
|
i1=3-i;
|
m5[i]=predicted_chroma_block[i+n1][mb_y]+predicted_chroma_block[i1+n1][mb_y];
|
m5[i]=predicted_chroma_block[i+n1][mb_y]+predicted_chroma_block[i1+n1][mb_y];
|
m5[i1]=predicted_chroma_block[i+n1][mb_y]-predicted_chroma_block[i1+n1][mb_y];
|
m5[i1]=predicted_chroma_block[i+n1][mb_y]-predicted_chroma_block[i1+n1][mb_y];
|
}
|
}
|
predicted_chroma_block[n1][mb_y] =(m5[0]+m5[1]);
|
predicted_chroma_block[n1][mb_y] =(m5[0]+m5[1]);
|
predicted_chroma_block[n1+2][mb_y]=(m5[0]-m5[1]);
|
predicted_chroma_block[n1+2][mb_y]=(m5[0]-m5[1]);
|
predicted_chroma_block[n1+1][mb_y]=m5[3]*2+m5[2];
|
predicted_chroma_block[n1+1][mb_y]=m5[3]*2+m5[2];
|
predicted_chroma_block[n1+3][mb_y]=m5[3]-m5[2]*2;
|
predicted_chroma_block[n1+3][mb_y]=m5[3]-m5[2]*2;
|
}
|
}
|
|
|
// Vertical transform.
|
// Vertical transform.
|
|
|
for (i=0; i < BLOCK_SIZE; i++)
|
for (i=0; i < BLOCK_SIZE; i++)
|
{
|
{
|
j1=n1+i;
|
j1=n1+i;
|
for (j=0; j < 2; j++)
|
for (j=0; j < 2; j++)
|
{
|
{
|
j2=3-j;
|
j2=3-j;
|
m5[j]=predicted_chroma_block[j1][n2+j]+predicted_chroma_block[j1][n2+j2];
|
m5[j]=predicted_chroma_block[j1][n2+j]+predicted_chroma_block[j1][n2+j2];
|
m5[j2]=predicted_chroma_block[j1][n2+j]-predicted_chroma_block[j1][n2+j2];
|
m5[j2]=predicted_chroma_block[j1][n2+j]-predicted_chroma_block[j1][n2+j2];
|
}
|
}
|
predicted_chroma_block[j1][n2+0]=(m5[0]+m5[1]);
|
predicted_chroma_block[j1][n2+0]=(m5[0]+m5[1]);
|
predicted_chroma_block[j1][n2+2]=(m5[0]-m5[1]);
|
predicted_chroma_block[j1][n2+2]=(m5[0]-m5[1]);
|
predicted_chroma_block[j1][n2+1]=m5[3]*2+m5[2];
|
predicted_chroma_block[j1][n2+1]=m5[3]*2+m5[2];
|
predicted_chroma_block[j1][n2+3]=m5[3]-m5[2]*2;
|
predicted_chroma_block[j1][n2+3]=m5[3]-m5[2]*2;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
// 2X2 transform of DC coeffs.
|
// 2X2 transform of DC coeffs.
|
mp1[0]=(predicted_chroma_block[0][0]+predicted_chroma_block[4][0]+predicted_chroma_block[0][4]+predicted_chroma_block[4][4]);
|
mp1[0]=(predicted_chroma_block[0][0]+predicted_chroma_block[4][0]+predicted_chroma_block[0][4]+predicted_chroma_block[4][4]);
|
mp1[1]=(predicted_chroma_block[0][0]-predicted_chroma_block[4][0]+predicted_chroma_block[0][4]-predicted_chroma_block[4][4]);
|
mp1[1]=(predicted_chroma_block[0][0]-predicted_chroma_block[4][0]+predicted_chroma_block[0][4]-predicted_chroma_block[4][4]);
|
mp1[2]=(predicted_chroma_block[0][0]+predicted_chroma_block[4][0]-predicted_chroma_block[0][4]-predicted_chroma_block[4][4]);
|
mp1[2]=(predicted_chroma_block[0][0]+predicted_chroma_block[4][0]-predicted_chroma_block[0][4]-predicted_chroma_block[4][4]);
|
mp1[3]=(predicted_chroma_block[0][0]-predicted_chroma_block[4][0]-predicted_chroma_block[0][4]+predicted_chroma_block[4][4]);
|
mp1[3]=(predicted_chroma_block[0][0]-predicted_chroma_block[4][0]-predicted_chroma_block[0][4]+predicted_chroma_block[4][4]);
|
|
|
for (n1=0; n1 < 2; n1 ++)
|
for (n1=0; n1 < 2; n1 ++)
|
for (n2=0; n2 < 2; n2 ++)
|
for (n2=0; n2 < 2; n2 ++)
|
{
|
{
|
if (img->sp_switch || img->type==SI_SLICE) //M.W. patched for SI
|
if (img->sp_switch || img->type==SI_SLICE) //M.W. patched for SI
|
{
|
{
|
//quantization fo predicted block
|
//quantization fo predicted block
|
ilev=(iabs (mp1[n1+n2*2]) * quant_coef[qp_rem_sp][0][0] + 2 * qp_const2) >> (q_bits_sp + 1);
|
ilev=(iabs (mp1[n1+n2*2]) * quant_coef[qp_rem_sp][0][0] + 2 * qp_const2) >> (q_bits_sp + 1);
|
//addition
|
//addition
|
ilev=img->cof[n1+ll][4+n2][0][0]+isignab(ilev,mp1[n1+n2*2]);
|
ilev=img->cof[n1+ll][4+n2][0][0]+isignab(ilev,mp1[n1+n2*2]);
|
//dequantization
|
//dequantization
|
mp1[n1+n2*2] =ilev*dequant_coef[qp_rem_sp][0][0]<<qp_per_sp;
|
mp1[n1+n2*2] =ilev*dequant_coef[qp_rem_sp][0][0]<<qp_per_sp;
|
}
|
}
|
else
|
else
|
{
|
{
|
ilev=((img->cof[n1+ll][4+n2][0][0]*dequant_coef[qp_rem][0][0]*A[0][0]<< qp_per) >>5)+mp1[n1+n2*2] ;
|
ilev=((img->cof[n1+ll][4+n2][0][0]*dequant_coef[qp_rem][0][0]*A[0][0]<< qp_per) >>5)+mp1[n1+n2*2] ;
|
mp1[n1+n2*2]=isignab((iabs(ilev)* quant_coef[qp_rem_sp][0][0]+ 2 * qp_const2)>> (q_bits_sp+1),ilev)*dequant_coef[qp_rem_sp][0][0]<<qp_per_sp;
|
mp1[n1+n2*2]=isignab((iabs(ilev)* quant_coef[qp_rem_sp][0][0]+ 2 * qp_const2)>> (q_bits_sp+1),ilev)*dequant_coef[qp_rem_sp][0][0]<<qp_per_sp;
|
}
|
}
|
}
|
}
|
|
|
|
|
for (n2=0; n2 < 2; n2 ++)
|
for (n2=0; n2 < 2; n2 ++)
|
for (n1=0; n1 < 2; n1 ++)
|
for (n1=0; n1 < 2; n1 ++)
|
for (i=0;i< BLOCK_SIZE; i++)
|
for (i=0;i< BLOCK_SIZE; i++)
|
for (j=0;j< BLOCK_SIZE; j++)
|
for (j=0;j< BLOCK_SIZE; j++)
|
{
|
{
|
// recovering coefficient since they are already dequantized earlier
|
// recovering coefficient since they are already dequantized earlier
|
img->cof[n1+ll][4+n2][j][i] = (img->cof[n1+ll][4+n2][j][i] >> qp_per) / dequant_coef[qp_rem][i][j];
|
img->cof[n1+ll][4+n2][j][i] = (img->cof[n1+ll][4+n2][j][i] >> qp_per) / dequant_coef[qp_rem][i][j];
|
|
|
if (img->sp_switch || img->type==SI_SLICE) //M.W. patched for SI
|
if (img->sp_switch || img->type==SI_SLICE) //M.W. patched for SI
|
{
|
{
|
//quantization of the predicted block
|
//quantization of the predicted block
|
ilev = (iabs(predicted_chroma_block[n1*BLOCK_SIZE+i][n2*BLOCK_SIZE+j]) * quant_coef[qp_rem_sp][i][j] + qp_const2) >> q_bits_sp;
|
ilev = (iabs(predicted_chroma_block[n1*BLOCK_SIZE+i][n2*BLOCK_SIZE+j]) * quant_coef[qp_rem_sp][i][j] + qp_const2) >> q_bits_sp;
|
//addition of the residual
|
//addition of the residual
|
ilev = isignab(ilev,predicted_chroma_block[n1*BLOCK_SIZE+i][n2*BLOCK_SIZE+j]) + img->cof[n1+ll][4+n2][j][i];
|
ilev = isignab(ilev,predicted_chroma_block[n1*BLOCK_SIZE+i][n2*BLOCK_SIZE+j]) + img->cof[n1+ll][4+n2][j][i];
|
// Inverse quantization
|
// Inverse quantization
|
img->cof[n1+ll][4+n2][j][i] = ilev * dequant_coef[qp_rem_sp][i][j] << qp_per_sp ;
|
img->cof[n1+ll][4+n2][j][i] = ilev * dequant_coef[qp_rem_sp][i][j] << qp_per_sp ;
|
}
|
}
|
else
|
else
|
{
|
{
|
//dequantization and addition of the predicted block
|
//dequantization and addition of the predicted block
|
ilev=((img->cof[n1+ll][4+n2][j][i]*dequant_coef[qp_rem][i][j]*A[i][j]<< qp_per) >>6)+predicted_chroma_block[n1*BLOCK_SIZE+i][n2*BLOCK_SIZE+j] ;
|
ilev=((img->cof[n1+ll][4+n2][j][i]*dequant_coef[qp_rem][i][j]*A[i][j]<< qp_per) >>6)+predicted_chroma_block[n1*BLOCK_SIZE+i][n2*BLOCK_SIZE+j] ;
|
//quantization and dequantization
|
//quantization and dequantization
|
img->cof[n1+ll][4+n2][j][i] = isignab((iabs(ilev) * quant_coef[qp_rem_sp][i][j] + qp_const2)>> q_bits_sp,ilev)*dequant_coef[qp_rem_sp][i][j]<<qp_per_sp;
|
img->cof[n1+ll][4+n2][j][i] = isignab((iabs(ilev) * quant_coef[qp_rem_sp][i][j] + qp_const2)>> q_bits_sp,ilev)*dequant_coef[qp_rem_sp][i][j]<<qp_per_sp;
|
}
|
}
|
}
|
}
|
img->cof[0+ll][4][0][0]=(mp1[0]+mp1[1]+mp1[2]+mp1[3])>>1;
|
img->cof[0+ll][4][0][0]=(mp1[0]+mp1[1]+mp1[2]+mp1[3])>>1;
|
img->cof[1+ll][4][0][0]=(mp1[0]-mp1[1]+mp1[2]-mp1[3])>>1;
|
img->cof[1+ll][4][0][0]=(mp1[0]-mp1[1]+mp1[2]-mp1[3])>>1;
|
img->cof[0+ll][5][0][0]=(mp1[0]+mp1[1]-mp1[2]-mp1[3])>>1;
|
img->cof[0+ll][5][0][0]=(mp1[0]+mp1[1]-mp1[2]-mp1[3])>>1;
|
img->cof[1+ll][5][0][0]=(mp1[0]-mp1[1]-mp1[2]+mp1[3])>>1;
|
img->cof[1+ll][5][0][0]=(mp1[0]-mp1[1]-mp1[2]+mp1[3])>>1;
|
}
|
}
|
|
|
|
|
