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| -rw-r--r-- | third_party/aom/av1/encoder/var_based_part.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/var_based_part.h b/third_party/aom/av1/encoder/var_based_part.h new file mode 100644 index 0000000000..f912458307 --- /dev/null +++ b/third_party/aom/av1/encoder/var_based_part.h @@ -0,0 +1,104 @@ +/* + * 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. + */ + +#ifndef AOM_AV1_ENCODER_VAR_BASED_PART_H_ +#define AOM_AV1_ENCODER_VAR_BASED_PART_H_ + +#include <stdio.h> + +#include "config/aom_config.h" +#include "config/aom_dsp_rtcd.h" +#include "config/av1_rtcd.h" + +#include "av1/encoder/encoder.h" + +// Calculate block index x and y from split level and index +#define GET_BLK_IDX_X(idx, level) (((idx) & (0x01)) << (level)) +#define GET_BLK_IDX_Y(idx, level) (((idx) >> (0x01)) << (level)) + +#ifdef __cplusplus +extern "C" { +#endif + +#define QINDEX_LARGE_BLOCK_THR \ + 100 // Use increased thresholds for midres for speed 9 when qindex is above + // this threshold + +#define CALC_CHROMA_THRESH_FOR_ZEROMV_SKIP(thresh_exit_part) \ + ((3 * (thresh_exit_part)) >> 2) +/*!\brief Set the thresholds for variance based partition. + * + * Set the variance split thresholds for following the block sizes: + * 0 - threshold_128x128, 1 - threshold_64x64, 2 - threshold_32x32, + * 3 - vbp_threshold_16x16. 4 - vbp_threshold_8x8 (to split to 4x4 partition) is + * currently only used on key frame. The thresholds are based om Q, resolution, + * noise level, and content state. + * + * \ingroup variance_partition + * \callgraph + * \callergraph + * + * \param[in] cpi Top level encoder structure + * \param[in] q q index + * \param[in] content_lowsumdiff Low sumdiff flag for superblock + * + * \remark Returns the set of thresholds in \c cpi->vbp_info.thresholds. + */ +void av1_set_variance_partition_thresholds(AV1_COMP *cpi, int q, + int content_lowsumdiff); + +/*!\brief Variance based partition selection. + * + * Select the partitioning based on the variance of the residual signal, + * residual generated as the difference between the source and prediction. + * The prediction is the reconstructed LAST or reconstructed GOLDEN, whichever + * has lower y sad. For LAST, option exists (speed feature) to use motion + * compensation based on superblock motion via int_pro_motion_estimation. For + * key frames reference is fixed 128 level, so variance is the source variance. + * The variance is computed for downsampled inputs (8x8 or 4x4 downsampled), + * and selection is done top-down via as set of partition thresholds. defined + * for each block level, and set based on Q, resolution, noise level, and + * content state. + * + * \ingroup variance_partition + * \callgraph + * \callergraph + * + * \param[in] cpi Top level encoder structure + * \param[in] tile Pointer to TileInfo + * \param[in] td Pointer to ThreadData + * \param[in] x Pointer to MACROBLOCK + * \param[in] mi_row Row coordinate of the superblock in a step + size of MI_SIZE + * \param[in] mi_col Column coordinate of the super block in a step + size of MI_SIZE + * + * \return Returns the partition in \c xd->mi[0]->sb_type. Also sets the low + * temporal variance flag and the color sensitivity flag (both used in + * nonrd_pickmode). + */ +int av1_choose_var_based_partitioning(AV1_COMP *cpi, const TileInfo *const tile, + ThreadData *td, MACROBLOCK *x, int mi_row, + int mi_col); + +// Read out the block's temporal variance for 64x64 SB case. +int av1_get_force_skip_low_temp_var_small_sb(const uint8_t *variance_low, + int mi_row, int mi_col, + BLOCK_SIZE bsize); +// Read out the block's temporal variance for 128x128 SB case. +int av1_get_force_skip_low_temp_var(const uint8_t *variance_low, int mi_row, + int mi_col, BLOCK_SIZE bsize); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_ENCODER_VAR_BASED_PART_H_ |