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[mip] Change kvz_pixel to int inside MIP implementation since some temp values could be negative. Add define for intra reference line length. Fix bug where wrong intra mode was passed to recon after search.

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This commit is contained in:
siivonek 2022-02-04 14:18:48 +02:00
parent df5cbbe82f
commit fcde90fbe0
3 changed files with 48 additions and 31 deletions
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68
src/intra.c
View file

@ -574,7 +574,7 @@ int kvz_get_mip_flag_context(int x, int y, int width, int height, lcu_t* const l
}
void kvz_mip_boundary_downsampling_1D(kvz_pixel* reduced_dst, const kvz_pixel* const ref_src, int src_len, int dst_len)
void kvz_mip_boundary_downsampling_1D(int* reduced_dst, const int* const ref_src, int src_len, int dst_len)
{
if (dst_len < src_len)
{
@ -605,8 +605,8 @@ void kvz_mip_boundary_downsampling_1D(kvz_pixel* reduced_dst, const kvz_pixel* c
}
void kvz_mip_reduced_pred(kvz_pixel* const output,
const kvz_pixel* const input,
void kvz_mip_reduced_pred(int* const output,
const int* const input,
const uint8_t* matrix,
const bool transpose,
const int red_bdry_size,
@ -618,8 +618,8 @@ void kvz_mip_reduced_pred(kvz_pixel* const output,
const int input_size = 2 * red_bdry_size;
// Use local buffer for transposed result
kvz_pixel out_buf_transposed[LCU_WIDTH * LCU_WIDTH];
kvz_pixel* const out_ptr = transpose ? out_buf_transposed : output;
int out_buf_transposed[LCU_WIDTH * LCU_WIDTH];
int* const out_ptr = transpose ? out_buf_transposed : output;
int sum = 0;
for (int i = 0; i < input_size; i++) {
@ -664,7 +664,7 @@ void kvz_mip_reduced_pred(kvz_pixel* const output,
}
void kvz_mip_pred_upsampling_1D(kvz_pixel* const dst, const kvz_pixel* const src, const kvz_pixel* const boundary,
void kvz_mip_pred_upsampling_1D(int* const dst, const int* const src, const int* const boundary,
const uint16_t src_size_ups_dim, const uint16_t src_size_orth_dim,
const uint16_t src_step, const uint16_t src_stride,
const uint16_t dst_step, const uint16_t dst_stride,
@ -676,15 +676,15 @@ void kvz_mip_pred_upsampling_1D(kvz_pixel* const dst, const kvz_pixel* const src
const int rounding_offset = 1 << (log2_factor - 1);
uint16_t idx_orth_dim = 0;
const kvz_pixel* src_line = src;
kvz_pixel* dst_line = dst;
const kvz_pixel* boundary_line = boundary + boundary_step - 1;
const int* src_line = src;
int* dst_line = dst;
const int* boundary_line = boundary + boundary_step - 1;
while (idx_orth_dim < src_size_orth_dim)
{
uint16_t idx_upsample_dim = 0;
const kvz_pixel* before = boundary_line;
const kvz_pixel* behind = src_line;
kvz_pixel* cur_dst = dst_line;
const int* before = boundary_line;
const int* behind = src_line;
int* cur_dst = dst_line;
while (idx_upsample_dim < src_size_ups_dim)
{
uint16_t pos = 1;
@ -721,9 +721,10 @@ void kvz_mip_predict(encoder_state_t const* const state, kvz_intra_references* c
kvz_pixel* dst,
const int mip_mode, const bool mip_transp)
{
// Separate this function into smaller bits if needed
// MIP prediction uses int values instead of kvz_pixel as some temp values may be negative
kvz_pixel* result = dst;
kvz_pixel* out = dst;
int result[32*32] = {0};
const int mode_idx = mip_mode;
// *** INPUT PREP ***
@ -757,24 +758,29 @@ void kvz_mip_predict(encoder_state_t const* const state, kvz_intra_references* c
// Initialize prediction parameters END
kvz_pixel* ref_samples_top = &refs->ref.top[1]; // NOTE: in VTM code these are indexed as x + 1 & y + 1 during init
kvz_pixel* ref_samples_left = &refs->ref.left[1];
int ref_samples_top[INTRA_REF_LENGTH];
int ref_samples_left[INTRA_REF_LENGTH];
for (int i = 0; i < INTRA_REF_LENGTH; i++) {
ref_samples_top[i] = (int)refs->ref.top[i+1]; // NOTE: in VTM code these are indexed as x + 1 & y + 1 during init
ref_samples_left[i] = (int)refs->ref.left[i+1];
}
// Compute reduced boundary with Haar-downsampling
const int input_size = 2 * red_bdry_size;
kvz_pixel red_bdry[MIP_MAX_INPUT_SIZE];
kvz_pixel red_bdry_trans[MIP_MAX_INPUT_SIZE];
int red_bdry[MIP_MAX_INPUT_SIZE];
int red_bdry_trans[MIP_MAX_INPUT_SIZE];
kvz_pixel* const top_reduced = &red_bdry[0];
kvz_pixel* const left_reduced = &red_bdry[red_bdry_size];
int* const top_reduced = &red_bdry[0];
int* const left_reduced = &red_bdry[red_bdry_size];
kvz_mip_boundary_downsampling_1D(top_reduced, ref_samples_top, width, red_bdry_size);
kvz_mip_boundary_downsampling_1D(left_reduced, ref_samples_left, height, red_bdry_size);
// Transposed reduced boundaries
kvz_pixel* const left_reduced_trans = &red_bdry_trans[0];
kvz_pixel* const top_reduced_trans = &red_bdry_trans[red_bdry_size];
int* const left_reduced_trans = &red_bdry_trans[0];
int* const top_reduced_trans = &red_bdry_trans[red_bdry_size];
for (int x = 0; x < red_bdry_size; x++) {
top_reduced_trans[x] = top_reduced[x];
@ -819,18 +825,18 @@ void kvz_mip_predict(encoder_state_t const* const state, kvz_intra_references* c
}
// Max possible size is red_pred_size * red_pred_size, red_pred_size can be either 4 or 8
kvz_pixel red_pred_buffer[8*8];
kvz_pixel* const reduced_pred = need_upsampling ? red_pred_buffer : result;
int red_pred_buffer[8*8];
int* const reduced_pred = need_upsampling ? red_pred_buffer : result;
const kvz_pixel* const reduced_bdry = transpose ? red_bdry_trans : red_bdry;
const int* const reduced_bdry = transpose ? red_bdry_trans : red_bdry;
kvz_mip_reduced_pred(reduced_pred, reduced_bdry, matrix, transpose, red_bdry_size, red_pred_size, size_id, input_offset, input_offset_trans);
if (need_upsampling) {
const kvz_pixel* ver_src = reduced_pred;
const int* ver_src = reduced_pred;
uint16_t ver_src_step = width;
if (ups_hor_factor > 1) {
kvz_pixel* const hor_dst = result + (ups_ver_factor - 1) * width;
int* const hor_dst = result + (ups_ver_factor - 1) * width;
ver_src = hor_dst;
ver_src_step *= ups_ver_factor;
@ -847,6 +853,11 @@ void kvz_mip_predict(encoder_state_t const* const state, kvz_intra_references* c
1, ups_ver_factor);
}
}
// Assign and cast values from temp array to output
for (int i = 0; i < 32 * 32; i++) {
out[i] = (kvz_pixel)result[i];
}
// *** BLOCK PREDICT *** END
}
@ -1439,6 +1450,8 @@ static void intra_recon_tb_leaf(
* \param mode_chroma intra mode for chroma, or -1 to skip chroma recon
* \param cur_cu pointer to the CU, or NULL to fetch CU from LCU
* \param cclm_params pointer for the cclm_parameters, can be NULL if the mode is not cclm mode
* \param mip_flag indicates whether the passed mode_luma is a MIP mode
* \param mip_transp indicates whether the used MIP mode is transposed
* \param lcu containing LCU
*/
void kvz_intra_recon_cu(
@ -1502,6 +1515,7 @@ void kvz_intra_recon_cu(
} else {
const bool has_luma = mode_luma != -1;
const bool has_chroma = mode_chroma != -1 && (x % 8 == 0 && y % 8 == 0);
// Process a leaf TU.
if (has_luma) {
intra_recon_tb_leaf(state, x, y, depth, mode_luma, cclm_params, lcu, COLOR_Y, multi_ref_index, use_mip, mip_transposed);

7
src/intra.h
View file

@ -42,9 +42,12 @@
#include "global.h" // IWYU pragma: keep
#include "kvazaar.h"
// Maximum possible reference line length for intra blocks
#define INTRA_REF_LENGTH (2 * 128 + 3 + 33 * MAX_REF_LINE_IDX)
typedef struct {
kvz_pixel left[2 * 128 + 3 + 33 * MAX_REF_LINE_IDX];
kvz_pixel top[2 * 128 + 3 + 33 * MAX_REF_LINE_IDX];
kvz_pixel left[INTRA_REF_LENGTH];
kvz_pixel top[INTRA_REF_LENGTH];
} kvz_intra_ref;
typedef struct
{

2
src/search_intra.c
View file

@ -870,7 +870,7 @@ static int8_t search_intra_rdo(encoder_state_t * const state,
pred_cu.intra.mip_is_transposed = false;
}
FILL(pred_cu.cbf, 0);
search_intra_trdepth(state, x_px, y_px, depth, tr_depth, modes[0], MAX_INT, &pred_cu, lcu, NULL, trafo[0]);
search_intra_trdepth(state, x_px, y_px, depth, tr_depth, pred_cu.intra.mode, MAX_INT, &pred_cu, lcu, NULL, trafo[0]);
}
return modes_to_check;