diff --git a/src/encoder.c b/src/encoder.c index c38257ed..99171250 100644 --- a/src/encoder.c +++ b/src/encoder.c @@ -2871,6 +2871,24 @@ static void reconstruct_chroma(const encoder_state * const encoder_state, cu_inf } } +coeff_scan_order_t get_scan_order(int intra_mode, int depth) +{ + coeff_scan_order_t scan_idx = SCAN_DIAG; + + // Scan mode is diagonal, except for 4x4+8x8 luma and 4x4 chroma, where: + // - angular 6-14 = vertical + // - angular 22-30 = horizontal + if (depth >= 3) { + if (intra_mode >= 6 && intra_mode <= 14) { + scan_idx = SCAN_VER; + } else if (intra_mode >= 22 && intra_mode <= 30) { + scan_idx = SCAN_HOR; + } + } + + return scan_idx; +} + /** * This function calculates the residual coefficients for a region of the LCU * (defined by x, y and depth) and updates the reconstruction with the @@ -2988,33 +3006,14 @@ void encode_transform_tree(encoder_state * const encoder_state, int32_t x, int32 // Pick coeff scan mode according to intra prediction mode. if (cur_cu->type == CU_INTRA) { - int pu_index = PU_INDEX(x_pu, y_pu); - int luma_mode = cur_cu->intra[pu_index].mode; int chroma_mode = cur_cu->intra[0].mode_chroma; if (chroma_mode == 36) { - chroma_mode = luma_mode; - } - scan_idx_luma = SCAN_DIAG; - scan_idx_chroma = SCAN_DIAG; - - // Scan mode is diagonal, except for 4x4+8x8 luma and 4x4 chroma, where: - // - angular 6-14 = vertical - // - angular 22-30 = horizontal - if (width <= 8) { - if (luma_mode >= 6 && luma_mode <= 14) { - scan_idx_luma = SCAN_VER; - } else if (luma_mode >= 22 && luma_mode <= 30) { - scan_idx_luma = SCAN_HOR; - } - - if (chroma_mode >= 6 && chroma_mode <= 14) { - scan_idx_chroma = SCAN_VER; - } else if (chroma_mode >= 22 && chroma_mode <= 30) { - scan_idx_chroma = SCAN_HOR; - } + chroma_mode = cur_cu->intra[PU_INDEX(x_pu, y_pu)].mode; } + scan_idx_luma = get_scan_order(cur_cu->intra[PU_INDEX(x_pu, y_pu)].mode, depth); + scan_idx_chroma = get_scan_order(chroma_mode, depth); } - + // Copy Luma and Chroma to the pred-block for(y = 0; y < width; y++) { for(x = 0; x < width; x++) { diff --git a/src/tables.h b/src/tables.h index 3541d172..04b5cd34 100644 --- a/src/tables.h +++ b/src/tables.h @@ -84,12 +84,12 @@ static const uint32_t * const g_sig_last_scan_cg[4][3] = { }; -enum COEFF_SCAN_TYPE +typedef enum { SCAN_DIAG = 0, // up-right diagonal scan SCAN_HOR, // horizontal first scan SCAN_VER // vertical first scan -}; +} coeff_scan_order_t; /**