📄 intra8x8_pred.c
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P_P = *pred_pels;
}
else
{
P_I = P_J = P_K = P_L = P_M = P_N = P_O = P_P = P_H;
}
if (block_available_up_left)
{
P_Z = imgY[pix_d.pos_y][pix_d.pos_x];
}
else
{
P_Z = (imgpel) img->dc_pred_value_comp[pl];
}
LowPassForIntra8x8PredHor(&(P_Z), block_available_up_left, block_available_up, block_available_left);
for (i=joff; i < joff + BLOCK_SIZE_8x8; i++)
{
memcpy(&mpr[i][ioff], (&P_A), BLOCK_SIZE_8x8 * sizeof(imgpel));
}
return DECODING_OK;
}
/*!
***********************************************************************
* \brief
* makes and returns 8x8 horizontal prediction mode
*
* \return
* DECODING_OK decoding of intraprediction mode was sucessfull \n
*
***********************************************************************
*/
static inline int intra8x8_hor_pred(ImageParameters *img, //!< image parameters
Macroblock *currMB, //!< current macroblock
ColorPlane pl, //!< current image plane
int ioff, //!< pixel offset X within MB
int joff) //!< pixel offset Y within MB
{
int i,j;
imgpel PredPel[25]; // array of predictor pels
imgpel **imgY = (pl) ? dec_picture->imgUV[pl - 1] : dec_picture->imgY; // For MB level frame/field coding tools -- set default to imgY
PixelPos pix_a[8];
PixelPos pix_b, pix_c, pix_d;
int block_available_up;
int block_available_left;
int block_available_up_left;
int block_available_up_right;
int ipos0 = ioff , ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3;
int ipos4 = ioff + 4, ipos5 = ioff + 5, ipos6 = ioff + 6, ipos7 = ioff + 7;
int jpos;
imgpel **mpr = img->mb_pred[pl];
int *mb_size = img->mb_size[IS_LUMA];
for (i=0;i<8;i++)
{
getNeighbour(currMB, ioff - 1, joff + i, mb_size, &pix_a[i]);
}
getNeighbour(currMB, ioff , joff - 1, mb_size, &pix_b);
getNeighbour(currMB, ioff + 8, joff - 1, mb_size, &pix_c);
getNeighbour(currMB, ioff - 1, joff - 1, mb_size, &pix_d);
pix_c.available = pix_c.available &&!(ioff == 8 && joff == 8);
if (active_pps->constrained_intra_pred_flag)
{
for (i=0, block_available_left=1; i<8;i++)
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_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;
}
else
{
block_available_left = pix_a[0].available;
block_available_up = pix_b.available;
block_available_up_right = pix_c.available;
block_available_up_left = pix_d.available;
}
if (!block_available_left)
printf ("warning: Intra_8x8_Horizontal prediction mode not allowed at mb %d\n", (int) img->current_mb_nr);
// form predictor pels
if (block_available_left)
{
P_Q = imgY[pix_a[0].pos_y][pix_a[0].pos_x];
P_R = imgY[pix_a[1].pos_y][pix_a[1].pos_x];
P_S = imgY[pix_a[2].pos_y][pix_a[2].pos_x];
P_T = imgY[pix_a[3].pos_y][pix_a[3].pos_x];
P_U = imgY[pix_a[4].pos_y][pix_a[4].pos_x];
P_V = imgY[pix_a[5].pos_y][pix_a[5].pos_x];
P_W = imgY[pix_a[6].pos_y][pix_a[6].pos_x];
P_X = imgY[pix_a[7].pos_y][pix_a[7].pos_x];
}
else
{
P_Q = P_R = P_S = P_T = P_U = P_V = P_W = P_X = (imgpel) img->dc_pred_value_comp[pl];
}
if (block_available_up_left)
{
P_Z = imgY[pix_d.pos_y][pix_d.pos_x];
}
else
{
P_Z = (imgpel) img->dc_pred_value_comp[pl];
}
LowPassForIntra8x8PredVer(&(P_Z), block_available_up_left, block_available_up, block_available_left);
for (j=0; j < BLOCK_SIZE_8x8; j++)
{
jpos = j + joff;
mpr[jpos][ipos0] =
mpr[jpos][ipos1] =
mpr[jpos][ipos2] =
mpr[jpos][ipos3] =
mpr[jpos][ipos4] =
mpr[jpos][ipos5] =
mpr[jpos][ipos6] =
mpr[jpos][ipos7] = (imgpel) (&P_Q)[j];
}
return DECODING_OK;
}
/*!
***********************************************************************
* \brief
* makes and returns 8x8 diagonal down right prediction mode
*
* \return
* DECODING_OK decoding of intraprediction mode was sucessfull \n
*
***********************************************************************
*/
static inline int intra8x8_diag_down_right_pred(ImageParameters *img, //!< image parameters
Macroblock *currMB, //!< current macroblock
ColorPlane pl, //!< current image plane
int ioff, //!< pixel offset X within MB
int joff) //!< pixel offset Y within MB
{
int i;
imgpel PredPel[25]; // array of predictor pels
imgpel **imgY = (pl) ? dec_picture->imgUV[pl - 1] : dec_picture->imgY; // For MB level frame/field coding tools -- set default to imgY
PixelPos pix_a[8];
PixelPos pix_b, pix_c, pix_d;
int block_available_up;
int block_available_left;
int block_available_up_left;
int block_available_up_right;
int jpos0 = joff , jpos1 = joff + 1, jpos2 = joff + 2, jpos3 = joff + 3;
int jpos4 = joff + 4, jpos5 = joff + 5, jpos6 = joff + 6, jpos7 = joff + 7;
int ipos0 = ioff , ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3;
int ipos4 = ioff + 4, ipos5 = ioff + 5, ipos6 = ioff + 6, ipos7 = ioff + 7;
imgpel *pred_pels, **mpr = img->mb_pred[pl];
int *mb_size = img->mb_size[IS_LUMA];
for (i=0;i<8;i++)
{
getNeighbour(currMB, ioff - 1, joff + i, mb_size, &pix_a[i]);
}
getNeighbour(currMB, ioff , joff - 1, mb_size, &pix_b);
getNeighbour(currMB, ioff + 8, joff - 1, mb_size, &pix_c);
getNeighbour(currMB, ioff - 1, joff - 1, mb_size, &pix_d);
pix_c.available = pix_c.available &&!(ioff == 8 && joff == 8);
if (active_pps->constrained_intra_pred_flag)
{
for (i=0, block_available_left=1; i<8;i++)
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_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;
}
else
{
block_available_left = pix_a[0].available;
block_available_up = pix_b.available;
block_available_up_right = pix_c.available;
block_available_up_left = pix_d.available;
}
if ((!block_available_up)||(!block_available_left)||(!block_available_up_left))
printf ("warning: Intra_8x8_Diagonal_Down_Right prediction mode not allowed at mb %d\n", (int) img->current_mb_nr);
// form predictor pels
if (block_available_up)
{
pred_pels = &imgY[pix_b.pos_y][pix_b.pos_x];
P_A = pred_pels[0];
P_B = pred_pels[1];
P_C = pred_pels[2];
P_D = pred_pels[3];
P_E = pred_pels[4];
P_F = pred_pels[5];
P_G = pred_pels[6];
P_H = pred_pels[7];
}
else
{
P_A = P_B = P_C = P_D = P_E = P_F = P_G = P_H = (imgpel) img->dc_pred_value_comp[pl];
}
if (block_available_up_right)
{
pred_pels = &imgY[pix_c.pos_y][pix_c.pos_x];
P_I = pred_pels[0];
P_J = pred_pels[1];
P_K = pred_pels[2];
P_L = pred_pels[3];
P_M = pred_pels[4];
P_N = pred_pels[5];
P_O = pred_pels[6];
P_P = pred_pels[7];
}
else
{
P_I = P_J = P_K = P_L = P_M = P_N = P_O = P_P = P_H;
}
if (block_available_left)
{
P_Q = imgY[pix_a[0].pos_y][pix_a[0].pos_x];
P_R = imgY[pix_a[1].pos_y][pix_a[1].pos_x];
P_S = imgY[pix_a[2].pos_y][pix_a[2].pos_x];
P_T = imgY[pix_a[3].pos_y][pix_a[3].pos_x];
P_U = imgY[pix_a[4].pos_y][pix_a[4].pos_x];
P_V = imgY[pix_a[5].pos_y][pix_a[5].pos_x];
P_W = imgY[pix_a[6].pos_y][pix_a[6].pos_x];
P_X = imgY[pix_a[7].pos_y][pix_a[7].pos_x];
}
else
{
P_Q = P_R = P_S = P_T = P_U = P_V = P_W = P_X = (imgpel) img->dc_pred_value_comp[pl];
}
if (block_available_up_left)
{
P_Z = imgY[pix_d.pos_y][pix_d.pos_x];
}
else
{
P_Z = (imgpel) img->dc_pred_value_comp[pl];
}
LowPassForIntra8x8Pred(&(P_Z), block_available_up_left, block_available_up, block_available_left);
// Mode DIAG_DOWN_RIGHT_PRED
mpr[jpos7][ipos0] = (imgpel) ((P_X + P_V + 2*(P_W) + 2) >> 2);
mpr[jpos6][ipos0] =
mpr[jpos7][ipos1] = (imgpel) ((P_W + P_U + 2*(P_V) + 2) >> 2);
mpr[jpos5][ipos0] =
mpr[jpos6][ipos1] =
mpr[jpos7][ipos2] = (imgpel) ((P_V + P_T + 2*(P_U) + 2) >> 2);
mpr[jpos4][ipos0] =
mpr[jpos5][ipos1] =
mpr[jpos6][ipos2] =
mpr[jpos7][ipos3] = (imgpel) ((P_U + P_S + 2*(P_T) + 2) >> 2);
mpr[jpos3][ipos0] =
mpr[jpos4][ipos1] =
mpr[jpos5][ipos2] =
mpr[jpos6][ipos3] =
mpr[jpos7][ipos4] = (imgpel) ((P_T + P_R + 2*(P_S) + 2) >> 2);
mpr[jpos2][ipos0] =
mpr[jpos3][ipos1] =
mpr[jpos4][ipos2] =
mpr[jpos5][ipos3] =
mpr[jpos6][ipos4] =
mpr[jpos7][ipos5] = (imgpel) ((P_S + P_Q + 2*(P_R) + 2) >> 2);
mpr[jpos1][ipos0] =
mpr[jpos2][ipos1] =
mpr[jpos3][ipos2] =
mpr[jpos4][ipos3] =
mpr[jpos5][ipos4] =
mpr[jpos6][ipos5] =
mpr[jpos7][ipos6] = (imgpel) ((P_R + P_Z + 2*(P_Q) + 2) >> 2);
mpr[jpos0][ipos0] =
mpr[jpos1][ipos1] =
mpr[jpos2][ipos2] =
mpr[jpos3][ipos3] =
mpr[jpos4][ipos4] =
mpr[jpos5][ipos5] =
mpr[jpos6][ipos6] =
mpr[jpos7][ipos7] = (imgpel) ((P_Q + P_A + 2*(P_Z) + 2) >> 2);
mpr[jpos0][ipos1] =
mpr[jpos1][ipos2] =
mpr[jpos2][ipos3] =
mpr[jpos3][ipos4] =
mpr[jpos4][ipos5] =
mpr[jpos5][ipos6] =
mpr[jpos6][ipos7] = (imgpel) ((P_Z + P_B + 2*(P_A) + 2) >> 2);
mpr[jpos0][ipos2] =
mpr[jpos1][ipos3] =
mpr[jpos2][ipos4] =
mpr[jpos3][ipos5] =
mpr[jpos4][ipos6] =
mpr[jpos5][ipos7] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2);
mpr[jpos0][ipos3] =
mpr[jpos1][ipos4] =
mpr[jpos2][ipos5] =
mpr[jpos3][ipos6] =
mpr[jpos4][ipos7] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2);
mpr[jpos0][ipos4] =
mpr[jpos1][ipos5] =
mpr[jpos2][ipos6] =
mpr[jpos3][ipos7] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2);
mpr[jpos0][ipos5] =
mpr[jpos1][ipos6] =
mpr[jpos2][ipos7] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2);
mpr[jpos0][ipos6] =
mpr[jpos1][ipos7] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2);
mpr[jpos0][ipos7] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2);
return DECODING_OK;
}
/*!
***********************************************************************
* \brief
* makes and returns 8x8 diagonal down left prediction mode
*
* \return
* DECODING_OK decoding of intraprediction mode was sucessfull \n
*
***********************************************************************
*/
static inline int intra8x8_diag_down_left_pred(ImageParameters *img, //!< image parameters
Macroblock *currMB, //!< current macroblock
ColorPlane pl, //!< current image plane
int ioff, //!< pixel offset X within MB
int joff) //!< pixel offset Y within MB
{
int i;
imgpel PredPel[25]; // array of predictor pels
imgpel **imgY = (pl) ? dec_picture->imgUV[pl - 1] : dec_picture->imgY; // For MB level frame/field coding tools -- set default to imgY
PixelPos pix_a[8];
PixelPos pix_b, pix_c, pix_d;
int block_available_up;
int block_available_left;
int block_available_up_left;
int block_available_up_right;
int jpos0 = joff , jpos1 = joff + 1, jpos2 = joff + 2, jpos3 = joff + 3;
int jpos4 = joff + 4, jpos5 = joff + 5, jpos6 = joff + 6, jpos7 = joff + 7;
int ipos0 = ioff , ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3;
int ipos4 = ioff + 4, ipos5 = ioff + 5, ipos6 = ioff + 6, ipos7 = ioff + 7;
imgpel *pred_pels, **mpr = img->mb_pred[pl];
int *mb_size = img->mb_size[IS_LUMA];
for (i=0;i<8;i++)
{
getNeighbour(currMB, ioff - 1, joff + i, mb_size, &pix_a[i]);
}
getNeighbour(currMB, ioff , joff - 1, mb_size, &pix_b);
getNeighbour(currMB, ioff + 8, joff - 1, mb_size, &pix_c);
getNeighbour(currMB, ioff - 1, joff - 1, mb_size, &pix_d);
pix_c.available = pix_c.available &&!(ioff == 8 && joff == 8);
if (active_pps->constrained_intra_pred_flag)
{
for (i=0, block_available_left=1; i<8;i++)
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_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;
}
else
{
block_available_left = pix_a[0].available;
block_available_up = pix_b.available;
block_available_up_right = pix_c.available;
block_available_up_left = pix_d.available;
}
if (!block_available_up)
printf ("warning: Intra_8x8_Diagonal_Down_Left prediction mode not allowed at mb %d\n", (int) img->current_mb_nr);
// form predictor pels
if (block_available_up)
{
pred_pels = &imgY[pix_b.pos_y][pix_b.pos_x];
P_A = pred_pels[0];
P_B = pred_pels[1];
P_C = pred_pels[2];
P_D = pred_pels[3];
P_E = pred_pels[4];
P_F = pred_pels[5];
P_G = pred_pels[6];
P_H = pred_pels[7];
}
else
{
P_A = P_B = P_C = P_D = P_E = P_F = P_G = P_H = (imgpel) img->dc_pred_value_comp[pl];
}
if (block_available_up_right)
{
pred_pels = &imgY[pix_c.pos_y][pix_c.pos_x];
P_I = pred_pels[0];
P_J = pred_pels[1];
P_K = pred_pels[2];
P_L = pred_pels[3];
P_M = pred_pels[4];
P_N = pred_pels[5];
P_O = pred_pels[6];
P_P = pred_pels[7];
}
else
{
P_I = P_J = P_K = P_L = P_M = P_N = P_O = P_P = P_H;
}
if (block_available_left)
{
P_Q = imgY[pix_a[0].pos_y][pix_a[0].pos_x];
P_R = imgY[pix_a[1].pos_y][pix_a[1].pos_x];
P_S = imgY[pix_a[2].pos_y][pix_a[2].pos_x];
P_T = imgY[pix_a[3].pos_y][pix_a[3].pos_x];
P_U = imgY[pix_a[4].pos_y][pix_a[4].pos_x];
P_V = imgY[pix_a[5].pos_y][pix_a[5].pos_x];
P_W = imgY[pix_a[6].pos_y][pix_a[6].pos_x];
P_X = imgY[pix_a[7].pos_y][pix_a[7].pos_x];
}
else
{
P_Q = P_R = P_S = P_T = P_U = P_V = P_W = P_X = (imgpel) img->dc_pred_value_comp[pl];
}
if (block_available_up_left)
{
P_Z = imgY[pix_d.pos_y][pix_d.pos_x];
}
else
{
P_Z = (imgpel) img->dc_pred_value_comp[pl];
}
LowPassForIntra8x8Pred(&(P_Z), block_available_up_left, block_available_up, block_available_left);
// Mode DIAG_DOWN_LEFT_PRED
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