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Merge branch 'coding-refac'

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Arttu Ylä-Outinen 2017-05-24 11:54:50 +03:00
parent 85ac7e6b7a 13d2fdbd21
commit 752db73284
4 changed files with 173 additions and 302 deletions
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426
src/encode_coding_tree.c
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@ -342,7 +342,7 @@ void kvz_encode_coeff_nxn(encoder_state_t * const state,
}
static void encode_transform_unit(encoder_state_t * const state,
int x_pu, int y_pu, int depth)
int x, int y, int depth)
{
assert(depth >= 1 && depth <= MAX_PU_DEPTH);
@ -350,19 +350,15 @@ static void encode_transform_unit(encoder_state_t * const state,
const uint8_t width = LCU_WIDTH >> depth;
const uint8_t width_c = (depth == MAX_PU_DEPTH ? width : width / 2);
const cu_info_t *cur_pu = kvz_cu_array_at_const(frame->cu_array, x_pu << 2, y_pu << 2);
const int x_cu = x_pu / 2;
const int y_cu = y_pu / 2;
const cu_info_t *cur_cu = kvz_videoframe_get_cu_const(frame, x_cu, y_cu);
const cu_info_t *cur_pu = kvz_cu_array_at_const(frame->cu_array, x, y);
int8_t scan_idx = kvz_get_scan_order(cur_pu->type, cur_pu->intra.mode, depth);
int cbf_y = cbf_is_set(cur_pu->cbf, depth, COLOR_Y);
if (cbf_y) {
int x_local = x_pu * (LCU_WIDTH >> MAX_PU_DEPTH) % LCU_WIDTH;
int y_local = y_pu * (LCU_WIDTH >> MAX_PU_DEPTH) % LCU_WIDTH;
int x_local = x % LCU_WIDTH;
int y_local = y % LCU_WIDTH;
const coeff_t *coeff_y = &state->coeff->y[xy_to_zorder(LCU_WIDTH, x_local, y_local)];
// CoeffNxN
@ -370,36 +366,37 @@ static void encode_transform_unit(encoder_state_t * const state,
kvz_encode_coeff_nxn(state, coeff_y, width, 0, scan_idx, cur_pu->intra.tr_skip);
}
if (depth == MAX_DEPTH + 1 && !(x_pu % 2 && y_pu % 2)) {
if (depth == MAX_DEPTH + 1) {
// For size 4x4 luma transform the corresponding chroma transforms are
// also of size 4x4 covering 8x8 luma pixels. The residual is coded
// in the last transform unit so for the other ones, don't do anything.
// also of size 4x4 covering 8x8 luma pixels. The residual is coded in
// the last transform unit.
if (x % 8 == 0 || y % 8 == 0) {
// Not the last luma transform block so there is nothing more to do.
return;
}
bool chroma_cbf_set = cbf_is_set(cur_cu->cbf, depth, COLOR_U) ||
cbf_is_set(cur_cu->cbf, depth, COLOR_V);
if (chroma_cbf_set) {
int x_local, y_local;
if (depth <= MAX_DEPTH) {
x_local = x_pu * (LCU_WIDTH >> (MAX_PU_DEPTH + 1)) % LCU_WIDTH_C;
y_local = y_pu * (LCU_WIDTH >> (MAX_PU_DEPTH + 1)) % LCU_WIDTH_C;
} else {
// for 4x4 select top left pixel of the CU.
x_local = x_cu * (LCU_WIDTH >> (MAX_DEPTH + 1)) % LCU_WIDTH_C;
y_local = y_cu * (LCU_WIDTH >> (MAX_DEPTH + 1)) % LCU_WIDTH_C;
// Time to to code the chroma transform blocks. Move to the top-left
// corner of the block.
x -= 4;
y -= 4;
cur_pu = kvz_cu_array_at_const(frame->cu_array, x, y);
}
}
bool chroma_cbf_set = cbf_is_set(cur_pu->cbf, depth, COLOR_U) ||
cbf_is_set(cur_pu->cbf, depth, COLOR_V);
if (chroma_cbf_set) {
int x_local = (x >> 1) % LCU_WIDTH_C;
int y_local = (y >> 1) % LCU_WIDTH_C;
scan_idx = kvz_get_scan_order(cur_pu->type, cur_pu->intra.mode_chroma, depth);
const coeff_t *coeff_u = &state->coeff->u[xy_to_zorder(LCU_WIDTH_C, x_local, y_local)];
const coeff_t *coeff_v = &state->coeff->v[xy_to_zorder(LCU_WIDTH_C, x_local, y_local)];
scan_idx = kvz_get_scan_order(cur_cu->type, cur_cu->intra.mode_chroma, depth);
if (cbf_is_set(cur_cu->cbf, depth, COLOR_U)) {
if (cbf_is_set(cur_pu->cbf, depth, COLOR_U)) {
kvz_encode_coeff_nxn(state, coeff_u, width_c, 2, scan_idx, 0);
}
if (cbf_is_set(cur_cu->cbf, depth, COLOR_V)) {
if (cbf_is_set(cur_pu->cbf, depth, COLOR_V)) {
kvz_encode_coeff_nxn(state, coeff_v, width_c, 2, scan_idx, 0);
}
}
@ -415,8 +412,8 @@ static void encode_transform_unit(encoder_state_t * const state,
* \param parent_coeff_v What was signlaed at previous level for cbf_cr.
*/
static void encode_transform_coeff(encoder_state_t * const state,
int32_t x_pu,
int32_t y_pu,
int32_t x,
int32_t y,
int8_t depth,
int8_t tr_depth,
uint8_t parent_coeff_u,
@ -425,11 +422,10 @@ static void encode_transform_coeff(encoder_state_t * const state,
cabac_data_t * const cabac = &state->cabac;
const videoframe_t * const frame = state->tile->frame;
const cu_info_t *cur_pu = kvz_cu_array_at_const(frame->cu_array, x_pu << 2, y_pu << 2);
const int32_t x_cu = x_pu / 2;
const int32_t y_cu = y_pu / 2;
const cu_info_t *cur_cu = kvz_videoframe_get_cu_const(frame, x_cu, y_cu);
const cu_info_t *cur_pu = kvz_cu_array_at_const(frame->cu_array, x, y);
// Round coordinates down to a multiple of 8 to get the location of the
// containing CU.
const cu_info_t *cur_cu = kvz_cu_array_at_const(frame->cu_array, x & ~7, y & ~7);
// NxN signifies implicit transform split at the first transform level.
// There is a similar implicit split for inter, but it is only used when
@ -476,11 +472,13 @@ static void encode_transform_coeff(encoder_state_t * const state,
}
if (split) {
uint8_t pu_offset = 1 << (MAX_PU_DEPTH - (depth + 1));
encode_transform_coeff(state, x_pu, y_pu, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
encode_transform_coeff(state, x_pu + pu_offset, y_pu, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
encode_transform_coeff(state, x_pu, y_pu + pu_offset, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
encode_transform_coeff(state, x_pu + pu_offset, y_pu + pu_offset, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
uint8_t offset = LCU_WIDTH >> (depth + 1);
int x2 = x + offset;
int y2 = y + offset;
encode_transform_coeff(state, x, y, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
encode_transform_coeff(state, x2, y, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
encode_transform_coeff(state, x, y2, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
encode_transform_coeff(state, x2, y2, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v);
return;
}
@ -517,7 +515,7 @@ static void encode_transform_coeff(encoder_state_t * const state,
state->ref_qp = state->qp;
}
encode_transform_unit(state, x_pu, y_pu, depth);
encode_transform_unit(state, x, y, depth);
}
}
@ -672,7 +670,7 @@ static void encode_inter_prediction_unit(encoder_state_t * const state,
} // if !merge
}
#if KVZ_SEL_ENCRYPTION
static INLINE uint8_t intra_mode_encryption(encoder_state_t * const state,
uint8_t intra_pred_mode)
{
@ -716,180 +714,33 @@ static INLINE uint8_t intra_mode_encryption(encoder_state_t * const state,
}
}
static void encode_intra_coding_unit_encry(encoder_state_t * const state,
cabac_data_t * const cabac,
const cu_info_t * const cur_cu,
int x_ctb, int y_ctb, int depth)
{
const videoframe_t * const frame = state->tile->frame;
uint8_t intra_pred_mode[4];
uint8_t intra_pred_mode_encry[4] = {-1, -1, -1, -1};
uint8_t intra_pred_mode_chroma = cur_cu->intra.mode_chroma;
int8_t intra_preds[4][3] = {{-1, -1, -1},{-1, -1, -1},{-1, -1, -1},{-1, -1, -1}};
int8_t mpm_preds[4] = {-1, -1, -1, -1};
uint32_t flag[4];
#if ENABLE_PCM == 1
// Code must start after variable initialization
kvz_cabac_encode_bin_trm(cabac, 0); // IPCMFlag == 0
#endif
// PREDINFO CODING
// If intra prediction mode is found from the predictors,
// it can be signaled with two EP's. Otherwise we can send
// 5 EP bins with the full predmode
const int num_pred_units = kvz_part_mode_num_parts[cur_cu->part_size];
const int cu_width = LCU_WIDTH >> depth;
for (int j = 0; j < num_pred_units; ++j) {
const int pu_x = PU_GET_X(cur_cu->part_size, cu_width, x_ctb << 3, j);
const int pu_y = PU_GET_Y(cur_cu->part_size, cu_width, y_ctb << 3, j);
cu_info_t *cur_pu = kvz_cu_array_at(frame->cu_array, pu_x, pu_y);
const cu_info_t *left_pu = NULL;
const cu_info_t *above_pu = NULL;
if (pu_x > 0) {
assert(pu_x >> 2 > 0);
left_pu = kvz_cu_array_at_const(frame->cu_array, pu_x - 1, pu_y);
}
// Don't take the above PU across the LCU boundary.
if (pu_y % LCU_WIDTH > 0 && pu_y > 0) {
assert(pu_y >> 2 > 0);
above_pu = kvz_cu_array_at_const(frame->cu_array, pu_x, pu_y - 1);
}
kvz_intra_get_dir_luma_predictor_encry(pu_x, pu_y,
intra_preds[j],
(const cu_info_t *)cur_pu,
left_pu, above_pu);
intra_pred_mode[j] = cur_pu->intra.mode;
intra_pred_mode_encry[j] = intra_mode_encryption(state, intra_pred_mode[j]);
for (int i = 0; i < 3; i++) {
if (intra_preds[j][i] == intra_pred_mode_encry[j]) {
mpm_preds[j] = (int8_t)i;
break;
}
}
flag[j] = (mpm_preds[j] == -1) ? 0 : 1;
//Set the modified intra_pred_mode of the current pu here to make it available
// from its neighbours for mpm decision
cur_pu->intra.mode_encry=intra_pred_mode_encry[j];
if (cur_pu->part_size!=SIZE_NxN){
cu_info_t *cu = cur_pu;
//FIXME: there might be a more efficient way to propagate mode_encry for
//future use from left and above PUs
for (int y = pu_y; y < pu_y + cu_width; y += 4 ) {
for (int x = pu_x; x < pu_x + cu_width; x += 4) {
cu = (cu_info_t *)kvz_cu_array_at(frame->cu_array, x, y);
cu->intra.mode_encry = intra_pred_mode_encry[j];
}
}
}
}
cabac->cur_ctx = &(cabac->ctx.intra_mode_model);
for (int j = 0; j < num_pred_units; ++j) {
CABAC_BIN(cabac, flag[j], "prev_intra_luma_pred_flag");
}
for (int j = 0; j < num_pred_units; ++j) {
// Signal index of the prediction mode in the prediction list.
if (flag[j]) {
CABAC_BIN_EP(cabac, (mpm_preds[j] == 0 ? 0 : 1), "mpm_idx");
if (mpm_preds[j] != 0) {
CABAC_BIN_EP(cabac, (mpm_preds[j] == 1 ? 0 : 1), "mpm_idx");
}
} else {
// Signal the modified prediction mode.
int32_t tmp_pred = intra_pred_mode_encry[j];
// Sort prediction list from lowest to highest.
if (intra_preds[j][0] > intra_preds[j][1]) SWAP(intra_preds[j][0], intra_preds[j][1], int8_t);
if (intra_preds[j][0] > intra_preds[j][2]) SWAP(intra_preds[j][0], intra_preds[j][2], int8_t);
if (intra_preds[j][1] > intra_preds[j][2]) SWAP(intra_preds[j][1], intra_preds[j][2], int8_t);
// Reduce the index of the signaled prediction mode according to the
// prediction list, as it has been already signaled that it's not one
// of the prediction modes.
for (int i = 2; i >= 0; i--) {
tmp_pred = (tmp_pred > intra_preds[j][i] ? tmp_pred - 1 : tmp_pred);
}
CABAC_BINS_EP(cabac, tmp_pred, 5, "rem_intra_luma_pred_mode");
}
}
// Code chroma prediction mode.
if (state->encoder_control->chroma_format != KVZ_CSP_400) {
unsigned pred_mode = 5;
unsigned chroma_pred_modes[4] = {0, 26, 10, 1};
if (intra_pred_mode_chroma == intra_pred_mode[0]) {
pred_mode = 4;
} else if (intra_pred_mode_chroma == 34) {
// Angular 34 mode is possible only if intra pred mode is one of the
// possible chroma pred modes, in which case it is signaled with that
// duplicate mode.
for (int i = 0; i < 4; ++i) {
if (intra_pred_mode[0] == chroma_pred_modes[i]) pred_mode = i;
}
} else {
for (int i = 0; i < 4; ++i) {
if (intra_pred_mode_chroma == chroma_pred_modes[i]) pred_mode = i;
}
}
// pred_mode == 5 mean intra_pred_mode_chroma is something that can't
// be coded.
assert(pred_mode != 5);
/**
* Table 9-35 - Binarization for intra_chroma_pred_mode
* intra_chroma_pred_mode bin_string
* 4 0
* 0 100
* 1 101
* 2 110
* 3 111
* Table 9-37 - Assignment of ctxInc to syntax elements with context coded bins
* intra_chroma_pred_mode[][] = 0, bypass, bypass
*/
cabac->cur_ctx = &(cabac->ctx.chroma_pred_model[0]);
if (pred_mode == 4) {
CABAC_BIN(cabac, 0, "intra_chroma_pred_mode");
} else {
CABAC_BIN(cabac, 1, "intra_chroma_pred_mode");
CABAC_BINS_EP(cabac, pred_mode, 2, "intra_chroma_pred_mode");
}
}
encode_transform_coeff(state, x_ctb * 2, y_ctb * 2, depth, 0, 0, 0);
}
#endif
static void encode_intra_coding_unit(encoder_state_t * const state,
cabac_data_t * const cabac,
const cu_info_t * const cur_cu,
int x_ctb, int y_ctb, int depth)
int x, int y, int depth)
{
const videoframe_t * const frame = state->tile->frame;
uint8_t intra_pred_mode[4];
uint8_t intra_pred_mode_actual[4];
uint8_t *intra_pred_mode = intra_pred_mode_actual;
#if KVZ_SEL_ENCRYPTION
const bool do_crypto =
!state->cabac.only_count &&
state->encoder_control->cfg.crypto_features & KVZ_CRYPTO_INTRA_MODE;
#else
const bool do_crypto = false;
#endif
uint8_t intra_pred_mode_encry[4] = {-1, -1, -1, -1};
if (do_crypto) {
intra_pred_mode = intra_pred_mode_encry;
}
uint8_t intra_pred_mode_chroma = cur_cu->intra.mode_chroma;
int8_t intra_preds[4][3] = {{-1, -1, -1},{-1, -1, -1},{-1, -1, -1},{-1, -1, -1}};
int8_t mpm_preds[4] = {-1, -1, -1, -1};
uint32_t flag[4];
#if KVZ_SEL_ENCRYPTION
if(!state->cabac.only_count)
if (state->encoder_control->cfg.crypto_features & KVZ_CRYPTO_INTRA_MODE) {
encode_intra_coding_unit_encry(state, cabac, (cu_info_t *)cur_cu, x_ctb, y_ctb, depth);
return;
}
#endif
#if ENABLE_PCM == 1
// Code must start after variable initialization
@ -904,8 +755,8 @@ static void encode_intra_coding_unit(encoder_state_t * const state,
const int cu_width = LCU_WIDTH >> depth;
for (int j = 0; j < num_pred_units; ++j) {
const int pu_x = PU_GET_X(cur_cu->part_size, cu_width, x_ctb << 3, j);
const int pu_y = PU_GET_Y(cur_cu->part_size, cu_width, y_ctb << 3, j);
const int pu_x = PU_GET_X(cur_cu->part_size, cu_width, x, j);
const int pu_y = PU_GET_Y(cur_cu->part_size, cu_width, y, j);
const cu_info_t *cur_pu = kvz_cu_array_at_const(frame->cu_array, pu_x, pu_y);
const cu_info_t *left_pu = NULL;
@ -921,12 +772,26 @@ static void encode_intra_coding_unit(encoder_state_t * const state,
above_pu = kvz_cu_array_at_const(frame->cu_array, pu_x, pu_y - 1);
}
if (do_crypto) {
#if KVZ_SEL_ENCRYPTION
// Need to wrap in preprocessor directives because this function is
// only defined when KVZ_SEL_ENCRYPTION is defined.
kvz_intra_get_dir_luma_predictor_encry(pu_x, pu_y,
intra_preds[j],
cur_pu,
left_pu, above_pu);
#endif
} else {
kvz_intra_get_dir_luma_predictor(pu_x, pu_y,
intra_preds[j],
cur_pu,
left_pu, above_pu);
}
intra_pred_mode[j] = cur_pu->intra.mode;
intra_pred_mode_actual[j] = cur_pu->intra.mode;
if (do_crypto) {
intra_pred_mode_encry[j] = intra_mode_encryption(state, cur_pu->intra.mode);
}
for (int i = 0; i < 3; i++) {
if (intra_preds[j][i] == intra_pred_mode[j]) {
@ -935,6 +800,26 @@ static void encode_intra_coding_unit(encoder_state_t * const state,
}
}
flag[j] = (mpm_preds[j] == -1) ? 0 : 1;
#if KVZ_SEL_ENCRYPTION
// Need to wrap in preprocessor directives because
// cu_info_t.intra.mode_encry is only defined when KVZ_SEL_ENCRYPTION
// is defined.
if (do_crypto) {
// Set the modified intra_pred_mode of the current pu here to make it
// available from its neighbours for mpm decision.
// FIXME: there might be a more efficient way to propagate mode_encry
// for future use from left and above PUs
const int pu_width = PU_GET_W(cur_cu->part_size, cu_width, j);
for (int y = pu_y; y < pu_y + pu_width; y += 4 ) {
for (int x = pu_x; x < pu_x + pu_width; x += 4) {
cu_info_t *cu = kvz_cu_array_at(frame->cu_array, x, y);
cu->intra.mode_encry = intra_pred_mode_encry[j];
}
}
}
#endif
}
cabac->cur_ctx = &(cabac->ctx.intra_mode_model);
@ -974,14 +859,14 @@ static void encode_intra_coding_unit(encoder_state_t * const state,
unsigned pred_mode = 5;
unsigned chroma_pred_modes[4] = {0, 26, 10, 1};
if (intra_pred_mode_chroma == intra_pred_mode[0]) {
if (intra_pred_mode_chroma == intra_pred_mode_actual[0]) {
pred_mode = 4;
} else if (intra_pred_mode_chroma == 34) {
// Angular 34 mode is possible only if intra pred mode is one of the
// possible chroma pred modes, in which case it is signaled with that
// duplicate mode.
for (int i = 0; i < 4; ++i) {
if (intra_pred_mode[0] == chroma_pred_modes[i]) pred_mode = i;
if (intra_pred_mode_actual[0] == chroma_pred_modes[i]) pred_mode = i;
}
} else {
for (int i = 0; i < 4; ++i) {
@ -1013,7 +898,7 @@ static void encode_intra_coding_unit(encoder_state_t * const state,
}
}
encode_transform_coeff(state, x_ctb * 2, y_ctb * 2, depth, 0, 0, 0);
encode_transform_coeff(state, x, y, depth, 0, 0, 0);
}
static void encode_part_mode(encoder_state_t * const state,
@ -1100,37 +985,48 @@ static void encode_part_mode(encoder_state_t * const state,
}
void kvz_encode_coding_tree(encoder_state_t * const state,
uint16_t x_ctb,
uint16_t y_ctb,
uint16_t x,
uint16_t y,
uint8_t depth)
{
cabac_data_t * const cabac = &state->cabac;
const encoder_control_t * const ctrl = state->encoder_control;
const videoframe_t * const frame = state->tile->frame;
const cu_info_t *cur_cu = kvz_videoframe_get_cu_const(frame, x_ctb, y_ctb);
const cu_info_t *cur_cu = kvz_cu_array_at_const(frame->cu_array, x, y);
const cu_info_t *left_cu = NULL;
if (x > 0) {
left_cu = kvz_cu_array_at_const(frame->cu_array, x - 1, y);
}
const cu_info_t *above_cu = NULL;
if (y > 0) {
above_cu = kvz_cu_array_at_const(frame->cu_array, x, y - 1);
}
uint8_t split_flag = GET_SPLITDATA(cur_cu, depth);
uint8_t split_model = 0;
//Absolute ctb
uint16_t abs_x_ctb = x_ctb + (state->tile->lcu_offset_x * LCU_WIDTH) / (LCU_WIDTH >> MAX_DEPTH);
uint16_t abs_y_ctb = y_ctb + (state->tile->lcu_offset_y * LCU_WIDTH) / (LCU_WIDTH >> MAX_DEPTH);
// Absolute coordinates
uint16_t abs_x = x + state->tile->lcu_offset_x * LCU_WIDTH;
uint16_t abs_y = y + state->tile->lcu_offset_y * LCU_WIDTH;
// Check for slice border FIXME
uint8_t border_x = ((state->encoder_control->in.width) < (abs_x_ctb * (LCU_WIDTH >> MAX_DEPTH) + (LCU_WIDTH >> depth))) ? 1 : 0;
uint8_t border_y = ((state->encoder_control->in.height) < (abs_y_ctb * (LCU_WIDTH >> MAX_DEPTH) + (LCU_WIDTH >> depth))) ? 1 : 0;
uint8_t border_split_x = ((state->encoder_control->in.width) < ((abs_x_ctb + 1) * (LCU_WIDTH >> MAX_DEPTH) + (LCU_WIDTH >> (depth + 1)))) ? 0 : 1;
uint8_t border_split_y = ((state->encoder_control->in.height) < ((abs_y_ctb + 1) * (LCU_WIDTH >> MAX_DEPTH) + (LCU_WIDTH >> (depth + 1)))) ? 0 : 1;
uint8_t border = border_x | border_y; /*!< are we in any border CU */
bool border_x = ctrl->in.width < abs_x + (LCU_WIDTH >> depth);
bool border_y = ctrl->in.height < abs_y + (LCU_WIDTH >> depth);
bool border_split_x = ctrl->in.width >= abs_x + (LCU_WIDTH >> MAX_DEPTH) + (LCU_WIDTH >> (depth + 1));
bool border_split_y = ctrl->in.height >= abs_y + (LCU_WIDTH >> MAX_DEPTH) + (LCU_WIDTH >> (depth + 1));
bool border = border_x || border_y; /*!< are we in any border CU */
// When not in MAX_DEPTH, insert split flag and split the blocks if needed
if (depth != MAX_DEPTH) {
// Implisit split flag when on border
if (!border) {
// Get left and top block split_flags and if they are present and true, increase model number
if (x_ctb > 0 && GET_SPLITDATA(kvz_videoframe_get_cu_const(frame, x_ctb - 1, y_ctb), depth) == 1) {
if (left_cu && GET_SPLITDATA(left_cu, depth) == 1) {
split_model++;
}
if (y_ctb > 0 && GET_SPLITDATA(kvz_videoframe_get_cu_const(frame, x_ctb, y_ctb - 1), depth) == 1) {
if (above_cu && GET_SPLITDATA(above_cu, depth) == 1) {
split_model++;
}
@ -1140,18 +1036,19 @@ void kvz_encode_coding_tree(encoder_state_t * const state,
if (split_flag || border) {
// Split blocks and remember to change x and y block positions
uint8_t change = 1<<(MAX_DEPTH-1-depth);
kvz_encode_coding_tree(state, x_ctb, y_ctb, depth + 1); // x,y
int offset = LCU_WIDTH >> (depth + 1);
kvz_encode_coding_tree(state, x, y, depth + 1);
// TODO: fix when other half of the block would not be completely over the border
if (!border_x || border_split_x) {
kvz_encode_coding_tree(state, x_ctb + change, y_ctb, depth + 1);
kvz_encode_coding_tree(state, x + offset, y, depth + 1);
}
if (!border_y || border_split_y) {
kvz_encode_coding_tree(state, x_ctb, y_ctb + change, depth + 1);
kvz_encode_coding_tree(state, x, y + offset, depth + 1);
}
if (!border || (border_split_x && border_split_y)) {
kvz_encode_coding_tree(state, x_ctb + change, y_ctb + change, depth + 1);
kvz_encode_coding_tree(state, x + offset, y + offset, depth + 1);
}
return;
}
@ -1164,25 +1061,23 @@ void kvz_encode_coding_tree(encoder_state_t * const state,
// Encode skip flag
if (state->frame->slicetype != KVZ_SLICE_I) {
int8_t ctx_skip = 0; // uiCtxSkip = aboveskipped + leftskipped;
int ui;
int16_t num_cand = MRG_MAX_NUM_CANDS;
// Get left and top skipped flags and if they are present and true, increase context number
if (x_ctb > 0 && (kvz_videoframe_get_cu_const(frame, x_ctb - 1, y_ctb))->skipped) {
// uiCtxSkip = aboveskipped + leftskipped;
int8_t ctx_skip = 0;
if (left_cu && left_cu->skipped) {
ctx_skip++;
}
if (y_ctb > 0 && (kvz_videoframe_get_cu_const(frame, x_ctb, y_ctb - 1))->skipped) {
if (above_cu && above_cu->skipped) {
ctx_skip++;
}
cabac->cur_ctx = &(cabac->ctx.cu_skip_flag_model[ctx_skip]);
CABAC_BIN(cabac, cur_cu->skipped, "SkipFlag");
// IF SKIP
if (cur_cu->skipped) {
int16_t num_cand = MRG_MAX_NUM_CANDS;
if (num_cand > 1) {
for (ui = 0; ui < num_cand - 1; ui++) {
for (int ui = 0; ui < num_cand - 1; ui++) {
int32_t symbol = (ui != cur_cu->merge_idx);
if (ui == 0) {
cabac->cur_ctx = &(cabac->ctx.cu_merge_idx_ext_model);
@ -1199,8 +1094,6 @@ void kvz_encode_coding_tree(encoder_state_t * const state,
}
}
// ENDIF SKIP
// Prediction mode
if (state->frame->slicetype != KVZ_SLICE_I) {
cabac->cur_ctx = &(cabac->ctx.cu_pred_mode_model);
@ -1215,8 +1108,8 @@ void kvz_encode_coding_tree(encoder_state_t * const state,
const int cu_width = LCU_WIDTH >> depth;
for (int i = 0; i < num_pu; ++i) {
const int pu_x = PU_GET_X(cur_cu->part_size, cu_width, x_ctb << 3, i);
const int pu_y = PU_GET_Y(cur_cu->part_size, cu_width, y_ctb << 3, i);
const int pu_x = PU_GET_X(cur_cu->part_size, cu_width, x, i);
const int pu_y = PU_GET_Y(cur_cu->part_size, cu_width, y, i);
const int pu_w = PU_GET_W(cur_cu->part_size, cu_width, i);
const int pu_h = PU_GET_H(cur_cu->part_size, cu_width, i);
const cu_info_t *cur_pu = kvz_cu_array_at_const(frame->cu_array, pu_x, pu_y);
@ -1235,57 +1128,52 @@ void kvz_encode_coding_tree(encoder_state_t * const state,
// Code (possible) coeffs to bitstream
if (cbf) {
encode_transform_coeff(state, x_ctb * 2, y_ctb * 2, depth, 0, 0, 0);
encode_transform_coeff(state, x, y, depth, 0, 0, 0);
}
}
} else if (cur_cu->type == CU_INTRA) {
encode_intra_coding_unit(state, cabac, cur_cu, x_ctb, y_ctb, depth);
encode_intra_coding_unit(state, cabac, cur_cu, x, y, depth);
}
#if ENABLE_PCM == 1
#if ENABLE_PCM
// Code IPCM block
if (cur_cu->type == CU_PCM) {
else if (cur_cu->type == CU_PCM) {
kvz_cabac_encode_bin_trm(cabac, 1); // IPCMFlag == 1
kvz_cabac_finish(cabac);
kvz_bitstream_add_rbsp_trailing_bits(cabac.stream);
// PCM sample
{
unsigned y, x;
pixel *base_y = &cur_pic->y_data[x_ctb * (LCU_WIDTH >> (MAX_DEPTH)) + (y_ctb * (LCU_WIDTH >> (MAX_DEPTH))) * encoder->in.width];
pixel *base_u = &cur_pic->u_data[(x_ctb * (LCU_WIDTH >> (MAX_DEPTH + 1)) + (y_ctb * (LCU_WIDTH >> (MAX_DEPTH + 1))) * encoder->in.width / 2)];
pixel *base_v = &cur_pic->v_data[(x_ctb * (LCU_WIDTH >> (MAX_DEPTH + 1)) + (y_ctb * (LCU_WIDTH >> (MAX_DEPTH + 1))) * encoder->in.width / 2)];
// PCM sample
pixel *base_y = &cur_pic->y_data[x + y * encoder->in.width];
pixel *base_u = &cur_pic->u_data[x / 2 + y / 2 * encoder->in.width / 2];
pixel *base_v = &cur_pic->v_data[x / 2 + y / 2 * encoder->in.width / 2];
// Luma
for (y = 0; y < LCU_WIDTH >> depth; y++) {
for (x = 0; x < LCU_WIDTH >> depth; x++) {
kvz_bitstream_put(cabac.stream, base_y[x + y * encoder->in.width], 8);
for (unsigned y_px = 0; y_px < LCU_WIDTH >> depth; y_px++) {
for (unsigned x_px = 0; x_px < LCU_WIDTH >> depth; x_px++) {
kvz_bitstream_put(cabac.stream, base_y[x_px + y_px * encoder->in.width], 8);
}
}
// Chroma
if (encoder->in.video_format != FORMAT_400) {
for (y = 0; y < LCU_WIDTH >> (depth + 1); y++) {
for (x = 0; x < LCU_WIDTH >> (depth + 1); x++) {
kvz_bitstream_put(cabac.stream, base_u[x + y * (encoder->in.width >> 1)], 8);
for (unsigned y_px = 0; y_px < LCU_WIDTH >> (depth + 1); y_px++) {
for (unsigned x_px = 0; x_px < LCU_WIDTH >> (depth + 1); x_px++) {
kvz_bitstream_put(cabac.stream, base_u[x_px + y_px * (encoder->in.width >> 1)], 8);
}
}
for (y = 0; y < LCU_WIDTH >> (depth + 1); y++) {
for (x = 0; x < LCU_WIDTH >> (depth + 1); x++) {
kvz_bitstream_put(cabac.stream, base_v[x + y * (encoder->in.width >> 1)], 8);
for (unsigned y_px = 0; y_px < LCU_WIDTH >> (depth + 1); y_px++) {
for (unsigned x_px = 0; x_px < LCU_WIDTH >> (depth + 1); x_px++) {
kvz_bitstream_put(cabac.stream, base_v[x_px + y_px * (encoder->in.width >> 1)], 8);
}
}
}
}
// end PCM sample
kvz_cabac_start(cabac);
} // end Code IPCM block
#endif /* END ENABLE_PCM */
else { /* Should not happend */
}
#endif
else {
// CU type not set. Should not happen.
assert(0);
exit(1);
}
/* end prediction unit */
/* end coding_unit */
}

2
src/encoderstate.c
View file

@ -329,7 +329,7 @@ static void encoder_state_worker_encode_lcu(void * opaque)
state->must_code_qp_delta = encoder->lcu_dqp_enabled;
//Encode coding tree
kvz_encode_coding_tree(state, lcu->position.x << MAX_DEPTH, lcu->position.y << MAX_DEPTH, 0);
kvz_encode_coding_tree(state, lcu->position.x * LCU_WIDTH, lcu->position.y * LCU_WIDTH, 0);
// Coeffs are not needed anymore.
state->coeff = NULL;

14
src/videoframe.c
View file

@ -87,17 +87,3 @@ int kvz_videoframe_free(videoframe_t * const frame)
void kvz_videoframe_set_poc(videoframe_t * const frame, const int32_t poc) {
frame->poc = poc;
}
const cu_info_t* kvz_videoframe_get_cu_const(const videoframe_t * const frame,
unsigned int x_in_scu,
unsigned int y_in_scu)
{
return kvz_cu_array_at_const(frame->cu_array, x_in_scu << 3, y_in_scu << 3);
}
cu_info_t* kvz_videoframe_get_cu(videoframe_t * const frame,
const unsigned int x_in_scu,
const unsigned int y_in_scu)
{
return kvz_cu_array_at(frame->cu_array, x_in_scu << 3, y_in_scu << 3);
}

3
src/videoframe.h
View file

@ -56,7 +56,4 @@ int kvz_videoframe_free(videoframe_t * const frame);
void kvz_videoframe_set_poc(videoframe_t * frame, int32_t poc);
const cu_info_t* kvz_videoframe_get_cu_const(const videoframe_t * const frame, unsigned int x_in_scu, unsigned int y_in_scu);
cu_info_t* kvz_videoframe_get_cu(videoframe_t * const frame, const unsigned int x_in_scu, const unsigned int y_in_scu);
#endif