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Clamp edge lcu pixels if dimensions are not 64 divisible.

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This commit is contained in:
siivonek 2020-04-03 12:33:14 +02:00
parent e3ba0bfb8c
commit d025977949
1 changed files with 48 additions and 5 deletions
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43
src/encoderstate.c
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@ -1225,6 +1225,21 @@ static void normalize_lcu_weights(encoder_state_t * const state)
}
}
// Check if lcu is edge lcu. Return false if frame dimensions are 64 divisible
bool edge_lcu(int id, int lcus_x, int lcus_y, bool xdiv64, bool ydiv64)
{
if (xdiv64 && ydiv64) {
return false;
}
int last_row_first_id = (lcus_y - 1) * lcus_x;
if ((id % lcus_x == lcus_x - 1 && !xdiv64) || (id >= last_row_first_id && !ydiv64)) {
return true;
}
else {
return false;
}
}
static void encoder_state_init_new_frame(encoder_state_t * const state, kvz_picture* frame) {
assert(state->type == ENCODER_STATE_TYPE_MAIN);
@ -1266,9 +1281,25 @@ static void encoder_state_init_new_frame(encoder_state_t * const state, kvz_pict
int x_max = MIN(pxl_x + LCU_WIDTH, frame->width) - pxl_x;
int y_max = MIN(pxl_y + LCU_WIDTH, frame->height) - pxl_y;
bool xdiv64 = false;
bool ydiv64 = false;
if (frame->width % 64 == 0) xdiv64 = true;
if (frame->height % 64 == 0) ydiv64 = true;
// Luma variance
if (!edge_lcu(id, x_lim, y_lim, xdiv64, ydiv64)) {
kvz_pixels_blit(&state->tile->frame->source->y[pxl_x + pxl_y * state->tile->frame->source->stride], tmp,
x_max, y_max, state->tile->frame->source->stride, LCU_WIDTH);
} else {
// Extend edge pixels for edge lcus
for (int y = 0; y < LCU_WIDTH; y++) {
for (int x = 0; x < LCU_WIDTH; x++) {
int src_y = CLIP(0, frame->height - 1, pxl_y + y);
int src_x = CLIP(0, frame->width - 1, pxl_x + x);
tmp[y * LCU_WIDTH + x] = state->tile->frame->source->y[src_y * state->tile->frame->source->stride + src_x];
}
}
}
double lcu_var = kvz_pixel_var(tmp, LCU_LUMA_SIZE);
@ -1283,8 +1314,20 @@ static void encoder_state_init_new_frame(encoder_state_t * const state, kvz_pict
int c_x_max = MIN(c_pxl_x + lcu_chroma_width, frame->width >> 1) - c_pxl_x;
int c_y_max = MIN(c_pxl_y + lcu_chroma_width, frame->height >> 1) - c_pxl_y;
if (!edge_lcu(id, x_lim, y_lim, xdiv64, ydiv64)) {
kvz_pixels_blit(&state->tile->frame->source->u[c_pxl_x + c_pxl_y * c_stride], chromau_tmp, c_x_max, c_y_max, c_stride, lcu_chroma_width);
kvz_pixels_blit(&state->tile->frame->source->v[c_pxl_x + c_pxl_y * c_stride], chromav_tmp, c_x_max, c_y_max, c_stride, lcu_chroma_width);
}
else {
for (int y = 0; y < lcu_chroma_width; y++) {
for (int x = 0; x < lcu_chroma_width; x++) {
int src_y = CLIP(0, (frame->height >> 1) - 1, c_pxl_y + y);
int src_x = CLIP(0, (frame->width >> 1) - 1, c_pxl_x + x);
chromau_tmp[y * lcu_chroma_width + x] = state->tile->frame->source->u[src_y * c_stride + src_x];
chromav_tmp[y * lcu_chroma_width + x] = state->tile->frame->source->v[src_y * c_stride + src_x];
}
}
}
lcu_var += kvz_pixel_var(chromau_tmp, LCU_CHROMA_SIZE);
lcu_var += kvz_pixel_var(chromav_tmp, LCU_CHROMA_SIZE);
}