/* * Copyright (c) 2016, Alliance for Open Media. All rights reserved * * This source code is subject to the terms of the BSD 2 Clause License and * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License * was not distributed with this source code in the LICENSE file, you can * obtain it at www.aomedia.org/license/software. If the Alliance for Open * Media Patent License 1.0 was not distributed with this source code in the * PATENTS file, you can obtain it at www.aomedia.org/license/patent. */ #include #include "config/aom_dsp_rtcd.h" #include "config/av1_rtcd.h" #include "aom_dsp/txfm_common.h" #include "av1/common/enums.h" #include "av1/common/av1_txfm.h" #include "av1/encoder/av1_fwd_txfm1d.h" #include "av1/encoder/av1_fwd_txfm1d_cfg.h" static INLINE TxfmFunc fwd_txfm_type_to_func(TXFM_TYPE txfm_type) { switch (txfm_type) { case TXFM_TYPE_DCT4: return av1_fdct4_new; case TXFM_TYPE_DCT8: return av1_fdct8_new; case TXFM_TYPE_DCT16: return av1_fdct16_new; case TXFM_TYPE_DCT32: return av1_fdct32_new; case TXFM_TYPE_DCT64: return av1_fdct64_new; case TXFM_TYPE_ADST4: return av1_fadst4_new; case TXFM_TYPE_ADST8: return av1_fadst8_new; case TXFM_TYPE_ADST16: return av1_fadst16_new; case TXFM_TYPE_IDENTITY4: return av1_fidentity4_c; case TXFM_TYPE_IDENTITY8: return av1_fidentity8_c; case TXFM_TYPE_IDENTITY16: return av1_fidentity16_c; case TXFM_TYPE_IDENTITY32: return av1_fidentity32_c; default: assert(0); return NULL; } } void av1_gen_fwd_stage_range(int8_t *stage_range_col, int8_t *stage_range_row, const TXFM_2D_FLIP_CFG *cfg, int bd) { // Take the shift from the larger dimension in the rectangular case. const int8_t *shift = cfg->shift; // i < MAX_TXFM_STAGE_NUM will mute above array bounds warning for (int i = 0; i < cfg->stage_num_col && i < MAX_TXFM_STAGE_NUM; ++i) { stage_range_col[i] = cfg->stage_range_col[i] + shift[0] + bd + 1; } // i < MAX_TXFM_STAGE_NUM will mute above array bounds warning for (int i = 0; i < cfg->stage_num_row && i < MAX_TXFM_STAGE_NUM; ++i) { stage_range_row[i] = cfg->stage_range_row[i] + shift[0] + shift[1] + bd + 1; } } static INLINE void fwd_txfm2d_c(const int16_t *input, int32_t *output, const int stride, const TXFM_2D_FLIP_CFG *cfg, int32_t *buf, int bd) { int c, r; // Note when assigning txfm_size_col, we use the txfm_size from the // row configuration and vice versa. This is intentionally done to // accurately perform rectangular transforms. When the transform is // rectangular, the number of columns will be the same as the // txfm_size stored in the row cfg struct. It will make no difference // for square transforms. const int txfm_size_col = tx_size_wide[cfg->tx_size]; const int txfm_size_row = tx_size_high[cfg->tx_size]; // Take the shift from the larger dimension in the rectangular case. const int8_t *shift = cfg->shift; const int rect_type = get_rect_tx_log_ratio(txfm_size_col, txfm_size_row); int8_t stage_range_col[MAX_TXFM_STAGE_NUM]; int8_t stage_range_row[MAX_TXFM_STAGE_NUM]; assert(cfg->stage_num_col <= MAX_TXFM_STAGE_NUM); assert(cfg->stage_num_row <= MAX_TXFM_STAGE_NUM); av1_gen_fwd_stage_range(stage_range_col, stage_range_row, cfg, bd); const int8_t cos_bit_col = cfg->cos_bit_col; const int8_t cos_bit_row = cfg->cos_bit_row; const TxfmFunc txfm_func_col = fwd_txfm_type_to_func(cfg->txfm_type_col); const TxfmFunc txfm_func_row = fwd_txfm_type_to_func(cfg->txfm_type_row); // use output buffer as temp buffer int32_t *temp_in = output; int32_t *temp_out = output + txfm_size_row; // Columns for (c = 0; c < txfm_size_col; ++c) { if (cfg->ud_flip == 0) { for (r = 0; r < txfm_size_row; ++r) temp_in[r] = input[r * stride + c]; } else { for (r = 0; r < txfm_size_row; ++r) // flip upside down temp_in[r] = input[(txfm_size_row - r - 1) * stride + c]; } av1_round_shift_array(temp_in, txfm_size_row, -shift[0]); txfm_func_col(temp_in, temp_out, cos_bit_col, stage_range_col); av1_round_shift_array(temp_out, txfm_size_row, -shift[1]); if (cfg->lr_flip == 0) { for (r = 0; r < txfm_size_row; ++r) buf[r * txfm_size_col + c] = temp_out[r]; } else { for (r = 0; r < txfm_size_row; ++r) // flip from left to right buf[r * txfm_size_col + (txfm_size_col - c - 1)] = temp_out[r]; } } // Rows for (r = 0; r < txfm_size_row; ++r) { txfm_func_row(buf + r * txfm_size_col, output + r * txfm_size_col, cos_bit_row, stage_range_row); av1_round_shift_array(output + r * txfm_size_col, txfm_size_col, -shift[2]); if (abs(rect_type) == 1) { // Multiply everything by Sqrt2 if the transform is rectangular and the // size difference is a factor of 2. for (c = 0; c < txfm_size_col; ++c) { output[r * txfm_size_col + c] = round_shift( (int64_t)output[r * txfm_size_col + c] * NewSqrt2, NewSqrt2Bits); } } } } void av1_fwd_txfm2d_4x8_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[4 * 8]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_4X8, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_8x4_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[8 * 4]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_8X4, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_8x16_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[8 * 16]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_8X16, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_16x8_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[16 * 8]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_16X8, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_16x32_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[16 * 32]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_16X32, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_32x16_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[32 * 16]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_32X16, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_4x16_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[4 * 16]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_4X16, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_16x4_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[16 * 4]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_16X4, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_8x32_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[32 * 8]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_8X32, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_32x8_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[32 * 8]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_32X8, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_4x4_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[4 * 4]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_4X4, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_8x8_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[8 * 8]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_8X8, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_16x16_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[16 * 16]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_16X16, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_32x32_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[32 * 32]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_32X32, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); } void av1_fwd_txfm2d_64x64_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[64 * 64]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_64X64, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); // Zero out top-right 32x32 area. for (int row = 0; row < 32; ++row) { memset(output + row * 64 + 32, 0, 32 * sizeof(*output)); } // Zero out the bottom 64x32 area. memset(output + 32 * 64, 0, 32 * 64 * sizeof(*output)); // Re-pack non-zero coeffs in the first 32x32 indices. for (int row = 1; row < 32; ++row) { memcpy(output + row * 32, output + row * 64, 32 * sizeof(*output)); } } void av1_fwd_txfm2d_32x64_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[32 * 64]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_32X64, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); // Zero out the bottom 32x32 area. memset(output + 32 * 32, 0, 32 * 32 * sizeof(*output)); // Note: no repacking needed here. } void av1_fwd_txfm2d_64x32_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[64 * 32]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_64X32, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); // Zero out right 32x32 area. for (int row = 0; row < 32; ++row) { memset(output + row * 64 + 32, 0, 32 * sizeof(*output)); } // Re-pack non-zero coeffs in the first 32x32 indices. for (int row = 1; row < 32; ++row) { memcpy(output + row * 32, output + row * 64, 32 * sizeof(*output)); } } void av1_fwd_txfm2d_16x64_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { DECLARE_ALIGNED(32, int32_t, txfm_buf[64 * 16]); TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_16X64, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); // Zero out the bottom 16x32 area. memset(output + 16 * 32, 0, 16 * 32 * sizeof(*output)); // Note: no repacking needed here. } void av1_fwd_txfm2d_64x16_c(const int16_t *input, int32_t *output, int stride, TX_TYPE tx_type, int bd) { int32_t txfm_buf[64 * 16]; TXFM_2D_FLIP_CFG cfg; av1_get_fwd_txfm_cfg(tx_type, TX_64X16, &cfg); fwd_txfm2d_c(input, output, stride, &cfg, txfm_buf, bd); // Zero out right 32x16 area. for (int row = 0; row < 16; ++row) { memset(output + row * 64 + 32, 0, 32 * sizeof(*output)); } // Re-pack non-zero coeffs in the first 32x16 indices. for (int row = 1; row < 16; ++row) { memcpy(output + row * 32, output + row * 64, 32 * sizeof(*output)); } } static const int8_t fwd_shift_4x4[3] = { 2, 0, 0 }; static const int8_t fwd_shift_8x8[3] = { 2, -1, 0 }; static const int8_t fwd_shift_16x16[3] = { 2, -2, 0 }; static const int8_t fwd_shift_32x32[3] = { 2, -4, 0 }; static const int8_t fwd_shift_64x64[3] = { 0, -2, -2 }; static const int8_t fwd_shift_4x8[3] = { 2, -1, 0 }; static const int8_t fwd_shift_8x4[3] = { 2, -1, 0 }; static const int8_t fwd_shift_8x16[3] = { 2, -2, 0 }; static const int8_t fwd_shift_16x8[3] = { 2, -2, 0 }; static const int8_t fwd_shift_16x32[3] = { 2, -4, 0 }; static const int8_t fwd_shift_32x16[3] = { 2, -4, 0 }; static const int8_t fwd_shift_32x64[3] = { 0, -2, -2 }; static const int8_t fwd_shift_64x32[3] = { 2, -4, -2 }; static const int8_t fwd_shift_4x16[3] = { 2, -1, 0 }; static const int8_t fwd_shift_16x4[3] = { 2, -1, 0 }; static const int8_t fwd_shift_8x32[3] = { 2, -2, 0 }; static const int8_t fwd_shift_32x8[3] = { 2, -2, 0 }; static const int8_t fwd_shift_16x64[3] = { 0, -2, 0 }; static const int8_t fwd_shift_64x16[3] = { 2, -4, 0 }; const int8_t *fwd_txfm_shift_ls[TX_SIZES_ALL] = { fwd_shift_4x4, fwd_shift_8x8, fwd_shift_16x16, fwd_shift_32x32, fwd_shift_64x64, fwd_shift_4x8, fwd_shift_8x4, fwd_shift_8x16, fwd_shift_16x8, fwd_shift_16x32, fwd_shift_32x16, fwd_shift_32x64, fwd_shift_64x32, fwd_shift_4x16, fwd_shift_16x4, fwd_shift_8x32, fwd_shift_32x8, fwd_shift_16x64, fwd_shift_64x16, }; const int8_t fwd_cos_bit_col[MAX_TXWH_IDX /*txw_idx*/] [MAX_TXWH_IDX /*txh_idx*/] = { { 13, 13, 13, 0, 0 }, { 13, 13, 13, 12, 0 }, { 13, 13, 13, 12, 13 }, { 0, 13, 13, 12, 13 }, { 0, 0, 13, 12, 13 } }; const int8_t fwd_cos_bit_row[MAX_TXWH_IDX /*txw_idx*/] [MAX_TXWH_IDX /*txh_idx*/] = { { 13, 13, 12, 0, 0 }, { 13, 13, 13, 12, 0 }, { 13, 13, 12, 13, 12 }, { 0, 12, 13, 12, 11 }, { 0, 0, 12, 11, 10 } }; static const int8_t fdct4_range_mult2[4] = { 0, 2, 3, 3 }; static const int8_t fdct8_range_mult2[6] = { 0, 2, 4, 5, 5, 5 }; static const int8_t fdct16_range_mult2[8] = { 0, 2, 4, 6, 7, 7, 7, 7 }; static const int8_t fdct32_range_mult2[10] = { 0, 2, 4, 6, 8, 9, 9, 9, 9, 9 }; static const int8_t fdct64_range_mult2[12] = { 0, 2, 4, 6, 8, 10, 11, 11, 11, 11, 11, 11 }; static const int8_t fadst4_range_mult2[7] = { 0, 2, 4, 3, 3, 3, 3 }; static const int8_t fadst8_range_mult2[8] = { 0, 0, 1, 3, 3, 5, 5, 5 }; static const int8_t fadst16_range_mult2[10] = { 0, 0, 1, 3, 3, 5, 5, 7, 7, 7 }; static const int8_t max_fwd_range_mult2_col[5] = { 3, 5, 7, 9, 11 }; static const int8_t fidtx4_range_mult2[1] = { 1 }; static const int8_t fidtx8_range_mult2[1] = { 2 }; static const int8_t fidtx16_range_mult2[1] = { 3 }; static const int8_t fidtx32_range_mult2[1] = { 4 }; #if 0 const int8_t fwd_idtx_range_row[MAX_TXWH_IDX /*txw_idx*/] [MAX_TXWH_IDX /*txh_idx*/] = { { 2, 4, 5, 0, 0 }, { 3, 4, 5, 6, 0 }, { 4, 5, 6, 7, 8 }, { 0, 5, 6, 7, 8 }, { 0, 0, 7, 8, 9 } }; #endif const int8_t *fwd_txfm_range_mult2_list[TXFM_TYPES] = { fdct4_range_mult2, fdct8_range_mult2, fdct16_range_mult2, fdct32_range_mult2, fdct64_range_mult2, fadst4_range_mult2, fadst8_range_mult2, fadst16_range_mult2, fidtx4_range_mult2, fidtx8_range_mult2, fidtx16_range_mult2, fidtx32_range_mult2 }; static INLINE void set_fwd_txfm_non_scale_range(TXFM_2D_FLIP_CFG *cfg) { const int txh_idx = get_txh_idx(cfg->tx_size); av1_zero(cfg->stage_range_col); av1_zero(cfg->stage_range_row); if (cfg->txfm_type_col != TXFM_TYPE_INVALID) { int stage_num_col = cfg->stage_num_col; const int8_t *range_mult2_col = fwd_txfm_range_mult2_list[cfg->txfm_type_col]; for (int i = 0; i < stage_num_col; ++i) cfg->stage_range_col[i] = (range_mult2_col[i] + 1) >> 1; } if (cfg->txfm_type_row != TXFM_TYPE_INVALID) { int stage_num_row = cfg->stage_num_row; const int8_t *range_mult2_row = fwd_txfm_range_mult2_list[cfg->txfm_type_row]; for (int i = 0; i < stage_num_row; ++i) cfg->stage_range_row[i] = (max_fwd_range_mult2_col[txh_idx] + range_mult2_row[i] + 1) >> 1; } } void av1_get_fwd_txfm_cfg(TX_TYPE tx_type, TX_SIZE tx_size, TXFM_2D_FLIP_CFG *cfg) { assert(cfg != NULL); cfg->tx_size = tx_size; set_flip_cfg(tx_type, cfg); const TX_TYPE_1D tx_type_1d_col = vtx_tab[tx_type]; const TX_TYPE_1D tx_type_1d_row = htx_tab[tx_type]; const int txw_idx = tx_size_wide_log2[tx_size] - tx_size_wide_log2[0]; const int txh_idx = tx_size_high_log2[tx_size] - tx_size_high_log2[0]; cfg->shift = fwd_txfm_shift_ls[tx_size]; cfg->cos_bit_col = fwd_cos_bit_col[txw_idx][txh_idx]; cfg->cos_bit_row = fwd_cos_bit_row[txw_idx][txh_idx]; cfg->txfm_type_col = av1_txfm_type_ls[txh_idx][tx_type_1d_col]; cfg->txfm_type_row = av1_txfm_type_ls[txw_idx][tx_type_1d_row]; cfg->stage_num_col = av1_txfm_stage_num_list[cfg->txfm_type_col]; cfg->stage_num_row = av1_txfm_stage_num_list[cfg->txfm_type_row]; set_fwd_txfm_non_scale_range(cfg); }