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Diffstat (limited to 'media/libvpx/libvpx/vp9/encoder/vp9_speed_features.h')
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diff --git a/media/libvpx/libvpx/vp9/encoder/vp9_speed_features.h b/media/libvpx/libvpx/vp9/encoder/vp9_speed_features.h new file mode 100644 index 0000000000..70c61fe00d --- /dev/null +++ b/media/libvpx/libvpx/vp9/encoder/vp9_speed_features.h @@ -0,0 +1,674 @@ +/* + * Copyright (c) 2010 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef VPX_VP9_ENCODER_VP9_SPEED_FEATURES_H_ +#define VPX_VP9_ENCODER_VP9_SPEED_FEATURES_H_ + +#include "vp9/common/vp9_enums.h" + +#ifdef __cplusplus +extern "C" { +#endif + +enum { + INTRA_ALL = (1 << DC_PRED) | (1 << V_PRED) | (1 << H_PRED) | (1 << D45_PRED) | + (1 << D135_PRED) | (1 << D117_PRED) | (1 << D153_PRED) | + (1 << D207_PRED) | (1 << D63_PRED) | (1 << TM_PRED), + INTRA_DC = (1 << DC_PRED), + INTRA_DC_TM = (1 << DC_PRED) | (1 << TM_PRED), + INTRA_DC_H_V = (1 << DC_PRED) | (1 << V_PRED) | (1 << H_PRED), + INTRA_DC_TM_H_V = + (1 << DC_PRED) | (1 << TM_PRED) | (1 << V_PRED) | (1 << H_PRED) +}; + +enum { + INTER_ALL = (1 << NEARESTMV) | (1 << NEARMV) | (1 << ZEROMV) | (1 << NEWMV), + INTER_NEAREST = (1 << NEARESTMV), + INTER_NEAREST_NEW = (1 << NEARESTMV) | (1 << NEWMV), + INTER_NEAREST_ZERO = (1 << NEARESTMV) | (1 << ZEROMV), + INTER_NEAREST_NEW_ZERO = (1 << NEARESTMV) | (1 << ZEROMV) | (1 << NEWMV), + INTER_NEAREST_NEAR_NEW = (1 << NEARESTMV) | (1 << NEARMV) | (1 << NEWMV), + INTER_NEAREST_NEAR_ZERO = (1 << NEARESTMV) | (1 << NEARMV) | (1 << ZEROMV), +}; + +enum { + DISABLE_ALL_INTER_SPLIT = (1 << THR_COMP_GA) | (1 << THR_COMP_LA) | + (1 << THR_ALTR) | (1 << THR_GOLD) | (1 << THR_LAST), + + DISABLE_ALL_SPLIT = (1 << THR_INTRA) | DISABLE_ALL_INTER_SPLIT, + + DISABLE_COMPOUND_SPLIT = (1 << THR_COMP_GA) | (1 << THR_COMP_LA), + + LAST_AND_INTRA_SPLIT_ONLY = (1 << THR_COMP_GA) | (1 << THR_COMP_LA) | + (1 << THR_ALTR) | (1 << THR_GOLD) +}; + +typedef enum { + DIAMOND = 0, + NSTEP = 1, + HEX = 2, + BIGDIA = 3, + SQUARE = 4, + FAST_HEX = 5, + FAST_DIAMOND = 6, + MESH = 7 +} SEARCH_METHODS; + +typedef enum { + // No recode. + DISALLOW_RECODE = 0, + // Allow recode for KF and exceeding maximum frame bandwidth. + ALLOW_RECODE_KFMAXBW = 1, + // Allow recode only for KF/ARF/GF frames. + ALLOW_RECODE_KFARFGF = 2, + // Allow recode for ARF/GF/KF and first normal frame in each group. + ALLOW_RECODE_FIRST = 3, + // Allow recode for all frames based on bitrate constraints. + ALLOW_RECODE = 4, +} RECODE_LOOP_TYPE; + +typedef enum { + SUBPEL_TREE = 0, + SUBPEL_TREE_PRUNED = 1, // Prunes 1/2-pel searches + SUBPEL_TREE_PRUNED_MORE = 2, // Prunes 1/2-pel searches more aggressively + SUBPEL_TREE_PRUNED_EVENMORE = 3, // Prunes 1/2- and 1/4-pel searches + // Other methods to come +} SUBPEL_SEARCH_METHODS; + +typedef enum { + NO_MOTION_THRESHOLD = 0, + LOW_MOTION_THRESHOLD = 7 +} MOTION_THRESHOLD; + +typedef enum { + USE_FULL_RD = 0, + USE_LARGESTALL, + USE_TX_8X8 +} TX_SIZE_SEARCH_METHOD; + +typedef enum { + NOT_IN_USE = 0, + RELAXED_NEIGHBORING_MIN_MAX = 1, + STRICT_NEIGHBORING_MIN_MAX = 2 +} AUTO_MIN_MAX_MODE; + +typedef enum { + // Try the full image with different values. + LPF_PICK_FROM_FULL_IMAGE, + // Try a small portion of the image with different values. + LPF_PICK_FROM_SUBIMAGE, + // Estimate the level based on quantizer and frame type + LPF_PICK_FROM_Q, + // Pick 0 to disable LPF if LPF was enabled last frame + LPF_PICK_MINIMAL_LPF +} LPF_PICK_METHOD; + +typedef enum { + // Terminate search early based on distortion so far compared to + // qp step, distortion in the neighborhood of the frame, etc. + FLAG_EARLY_TERMINATE = 1 << 0, + + // Skips comp inter modes if the best so far is an intra mode. + FLAG_SKIP_COMP_BESTINTRA = 1 << 1, + + // Skips oblique intra modes if the best so far is an inter mode. + FLAG_SKIP_INTRA_BESTINTER = 1 << 3, + + // Skips oblique intra modes at angles 27, 63, 117, 153 if the best + // intra so far is not one of the neighboring directions. + FLAG_SKIP_INTRA_DIRMISMATCH = 1 << 4, + + // Skips intra modes other than DC_PRED if the source variance is small + FLAG_SKIP_INTRA_LOWVAR = 1 << 5, +} MODE_SEARCH_SKIP_LOGIC; + +typedef enum { + FLAG_SKIP_EIGHTTAP = 1 << EIGHTTAP, + FLAG_SKIP_EIGHTTAP_SMOOTH = 1 << EIGHTTAP_SMOOTH, + FLAG_SKIP_EIGHTTAP_SHARP = 1 << EIGHTTAP_SHARP, +} INTERP_FILTER_MASK; + +typedef enum { + // Search partitions using RD/NONRD criterion. + SEARCH_PARTITION, + + // Always use a fixed size partition. + FIXED_PARTITION, + + REFERENCE_PARTITION, + + // Use an arbitrary partitioning scheme based on source variance within + // a 64X64 SB. + VAR_BASED_PARTITION, + + // Use non-fixed partitions based on source variance. + SOURCE_VAR_BASED_PARTITION, + + // Make partition decisions with machine learning models. + ML_BASED_PARTITION +} PARTITION_SEARCH_TYPE; + +typedef enum { + // Does a dry run to see if any of the contexts need to be updated or not, + // before the final run. + TWO_LOOP = 0, + + // No dry run, also only half the coef contexts and bands are updated. + // The rest are not updated at all. + ONE_LOOP_REDUCED = 1 +} FAST_COEFF_UPDATE; + +typedef enum { EIGHTH_PEL, QUARTER_PEL, HALF_PEL, FULL_PEL } SUBPEL_FORCE_STOP; + +typedef struct ADAPT_SUBPEL_FORCE_STOP { + // Threshold for full pixel motion vector; + int mv_thresh; + + // subpel_force_stop if full pixel MV is below the threshold. + SUBPEL_FORCE_STOP force_stop_below; + + // subpel_force_stop if full pixel MV is equal to or above the threshold. + SUBPEL_FORCE_STOP force_stop_above; +} ADAPT_SUBPEL_FORCE_STOP; + +typedef struct MV_SPEED_FEATURES { + // Motion search method (Diamond, NSTEP, Hex, Big Diamond, Square, etc). + SEARCH_METHODS search_method; + + // This parameter controls which step in the n-step process we start at. + // It's changed adaptively based on circumstances. + int reduce_first_step_size; + + // If this is set to 1, we limit the motion search range to 2 times the + // largest motion vector found in the last frame. + int auto_mv_step_size; + + // Subpel_search_method can only be subpel_tree which does a subpixel + // logarithmic search that keeps stepping at 1/2 pixel units until + // you stop getting a gain, and then goes on to 1/4 and repeats + // the same process. Along the way it skips many diagonals. + SUBPEL_SEARCH_METHODS subpel_search_method; + + // Subpel MV search level. Can take values 0 - 2. Higher values mean more + // extensive subpel search. + int subpel_search_level; + + // When to stop subpel motion search. + SUBPEL_FORCE_STOP subpel_force_stop; + + // If it's enabled, different subpel_force_stop will be used for different MV. + int enable_adaptive_subpel_force_stop; + + ADAPT_SUBPEL_FORCE_STOP adapt_subpel_force_stop; + + // This variable sets the step_param used in full pel motion search. + int fullpel_search_step_param; + + // Whether to downsample the rows in sad calculation during motion search. + // This is only active when there are at least 8 rows. + int use_downsampled_sad; +} MV_SPEED_FEATURES; + +typedef struct PARTITION_SEARCH_BREAKOUT_THR { + int64_t dist; + int rate; +} PARTITION_SEARCH_BREAKOUT_THR; + +#define MAX_MESH_STEP 4 + +typedef struct MESH_PATTERN { + int range; + int interval; +} MESH_PATTERN; + +typedef enum { + // No reaction to rate control on a detected slide/scene change. + NO_DETECTION = 0, + + // Set to larger Q (max_q set by user) based only on the + // detected slide/scene change and current/past Q. + FAST_DETECTION_MAXQ = 1, + + // Based on (first pass) encoded frame, if large frame size is detected + // then set to higher Q for the second re-encode. This involves 2 pass + // encoding on slide change, so slower than 1, but more accurate for + // detecting overshoot. + RE_ENCODE_MAXQ = 2 +} OVERSHOOT_DETECTION_CBR_RT; + +typedef enum { + USE_2_TAPS = 0, + USE_4_TAPS, + USE_8_TAPS, + USE_8_TAPS_SHARP, +} SUBPEL_SEARCH_TYPE; + +typedef enum { + // Disable trellis coefficient optimization + DISABLE_TRELLIS_OPT, + // Enable trellis coefficient optimization + ENABLE_TRELLIS_OPT, + // Enable trellis coefficient optimization based on source variance of the + // prediction block during transform RD + ENABLE_TRELLIS_OPT_TX_RD_SRC_VAR, + // Enable trellis coefficient optimization based on residual mse of the + // transform block during transform RD + ENABLE_TRELLIS_OPT_TX_RD_RESIDUAL_MSE, +} ENABLE_TRELLIS_OPT_METHOD; + +typedef struct TRELLIS_OPT_CONTROL { + ENABLE_TRELLIS_OPT_METHOD method; + double thresh; +} TRELLIS_OPT_CONTROL; + +typedef struct SPEED_FEATURES { + MV_SPEED_FEATURES mv; + + // Frame level coding parameter update + int frame_parameter_update; + + RECODE_LOOP_TYPE recode_loop; + + // Trellis (dynamic programming) optimization of quantized values (+1, 0). + int optimize_coefficients; + + // Always set to 0. If on it enables 0 cost background transmission + // (except for the initial transmission of the segmentation). The feature is + // disabled because the addition of very large block sizes make the + // backgrounds very to cheap to encode, and the segmentation we have + // adds overhead. + int static_segmentation; + + // The best compound predictor is found using an iterative log search process + // that searches for best ref0 mv using error of combined predictor and then + // searches for best ref1 mv. This sf determines the number of iterations of + // this process based on block size. The sf becomes more aggressive from level + // 0 to 2. The following table indicates the number of iterations w.r.t bsize: + // ----------------------------------------------- + // |sf (level)|bsize < 8X8| [8X8, 16X16] | > 16X16 | + // | 0 | 4 | 4 | 4 | + // | 1 | 0 | 2 | 4 | + // | 2 | 0 | 0 | 0 | + // ----------------------------------------------- + // Here, 0 iterations indicate using the best single motion vector selected + // for each ref frame without any iterative refinement. + int comp_inter_joint_search_iter_level; + + // This variable is used to cap the maximum number of times we skip testing a + // mode to be evaluated. A high value means we will be faster. + // Turned off when (row_mt_bit_exact == 1 && adaptive_rd_thresh_row_mt == 0). + int adaptive_rd_thresh; + + // Flag to use adaptive_rd_thresh when row-mt it enabled, only for non-rd + // pickmode. + int adaptive_rd_thresh_row_mt; + + // Enables skipping the reconstruction step (idct, recon) in the + // intermediate steps assuming the last frame didn't have too many intra + // blocks and the q is less than a threshold. + int skip_encode_sb; + int skip_encode_frame; + // Speed feature to allow or disallow skipping of recode at block + // level within a frame. + int allow_skip_recode; + + // Coefficient probability model approximation step size + int coeff_prob_appx_step; + + // Enable uniform quantizer followed by trellis coefficient optimization + // during transform RD + TRELLIS_OPT_CONTROL trellis_opt_tx_rd; + + // Enable asymptotic closed-loop encoding decision for key frame and + // alternate reference frames. + int allow_acl; + + // Temporal dependency model based encoding mode optimization + int enable_tpl_model; + + // Use transform domain distortion. Use pixel domain distortion in speed 0 + // and certain situations in higher speed to improve the RD model precision. + int allow_txfm_domain_distortion; + double tx_domain_thresh; + + // The threshold is to determine how slow the motino is, it is used when + // use_lastframe_partitioning is set to LAST_FRAME_PARTITION_LOW_MOTION + MOTION_THRESHOLD lf_motion_threshold; + + // Determine which method we use to determine transform size. We can choose + // between options like full rd, largest for prediction size, largest + // for intra and model coefs for the rest. + TX_SIZE_SEARCH_METHOD tx_size_search_method; + + // How many levels of tx size to search, starting from the largest. + int tx_size_search_depth; + + // Low precision 32x32 fdct keeps everything in 16 bits and thus is less + // precise but significantly faster than the non lp version. + int use_lp32x32fdct; + + // After looking at the first set of modes (set by index here), skip + // checking modes for reference frames that don't match the reference frame + // of the best so far. + int mode_skip_start; + + // TODO(JBB): Remove this. + int reference_masking; + + PARTITION_SEARCH_TYPE partition_search_type; + + // Used if partition_search_type = FIXED_SIZE_PARTITION + BLOCK_SIZE always_this_block_size; + + // Skip rectangular partition test when partition type none gives better + // rd than partition type split. + int less_rectangular_check; + + // Disable testing non square partitions(eg 16x32) for block sizes larger than + // use_square_only_thresh_high or smaller than use_square_only_thresh_low. + int use_square_partition_only; + BLOCK_SIZE use_square_only_thresh_high; + BLOCK_SIZE use_square_only_thresh_low; + + // Prune reference frames for rectangular partitions. + int prune_ref_frame_for_rect_partitions; + + // Sets min and max partition sizes for this 64x64 region based on the + // same 64x64 in last encoded frame, and the left and above neighbor. + AUTO_MIN_MAX_MODE auto_min_max_partition_size; + // Ensures the rd based auto partition search will always + // go down at least to the specified level. + BLOCK_SIZE rd_auto_partition_min_limit; + + // Min and max partition size we enable (block_size) as per auto + // min max, but also used by adjust partitioning, and pick_partitioning. + BLOCK_SIZE default_min_partition_size; + BLOCK_SIZE default_max_partition_size; + + // Whether or not we allow partitions one smaller or one greater than the last + // frame's partitioning. Only used if use_lastframe_partitioning is set. + int adjust_partitioning_from_last_frame; + + // How frequently we re do the partitioning from scratch. Only used if + // use_lastframe_partitioning is set. + int last_partitioning_redo_frequency; + + // Disables sub 8x8 blocksizes in different scenarios: Choices are to disable + // it always, to allow it for only Last frame and Intra, disable it for all + // inter modes or to enable it always. + int disable_split_mask; + + // TODO(jingning): combine the related motion search speed features + // This allows us to use motion search at other sizes as a starting + // point for this motion search and limits the search range around it. + int adaptive_motion_search; + + // Do extra full pixel motion search to obtain better motion vector. + int enhanced_full_pixel_motion_search; + + // Threshold for allowing exhaistive motion search. + int exhaustive_searches_thresh; + + // Pattern to be used for any exhaustive mesh searches. + MESH_PATTERN mesh_patterns[MAX_MESH_STEP]; + + int schedule_mode_search; + + // Allows sub 8x8 modes to use the prediction filter that was determined + // best for 8x8 mode. If set to 0 we always re check all the filters for + // sizes less than 8x8, 1 means we check all filter modes if no 8x8 filter + // was selected, and 2 means we use 8 tap if no 8x8 filter mode was selected. + int adaptive_pred_interp_filter; + + // Adaptive prediction mode search + int adaptive_mode_search; + + // Prune NEAREST and ZEROMV single reference modes based on motion vector + // difference and mode rate + int prune_single_mode_based_on_mv_diff_mode_rate; + + // Chessboard pattern prediction for interp filter. Aggressiveness increases + // with levels. + // 0: disable + // 1: cb pattern in eval when filter is not switchable + // 2: cb pattern prediction for filter search + int cb_pred_filter_search; + + // This variable enables an early termination of interpolation filter eval + // based on the current rd cost after processing each plane + int early_term_interp_search_plane_rd; + + int cb_partition_search; + + int motion_field_mode_search; + + int alt_ref_search_fp; + + // Fast quantization process path + int use_quant_fp; + + // Use finer quantizer in every other few frames that run variable block + // partition type search. + int force_frame_boost; + + // Maximally allowed base quantization index fluctuation. + int max_delta_qindex; + + // Implements various heuristics to skip searching modes + // The heuristics selected are based on flags + // defined in the MODE_SEARCH_SKIP_HEURISTICS enum + unsigned int mode_search_skip_flags; + + // A source variance threshold below which filter search is disabled + // Choose a very large value (UINT_MAX) to use 8-tap always + unsigned int disable_filter_search_var_thresh; + + // These bit masks allow you to enable or disable intra modes for each + // transform size separately. + int intra_y_mode_mask[TX_SIZES]; + int intra_uv_mode_mask[TX_SIZES]; + + // These bit masks allow you to enable or disable intra modes for each + // prediction block size separately. + int intra_y_mode_bsize_mask[BLOCK_SIZES]; + + // This variable enables an early break out of mode testing if the model for + // rd built from the prediction signal indicates a value that's much + // higher than the best rd we've seen so far. + int use_rd_breakout; + + // This enables us to use an estimate for intra rd based on dc mode rather + // than choosing an actual uv mode in the stage of encoding before the actual + // final encode. + int use_uv_intra_rd_estimate; + + // This feature controls how the loop filter level is determined. + LPF_PICK_METHOD lpf_pick; + + // This feature limits the number of coefficients updates we actually do + // by only looking at counts from 1/2 the bands. + FAST_COEFF_UPDATE use_fast_coef_updates; + + // This flag controls the use of non-RD mode decision. + int use_nonrd_pick_mode; + + // A binary mask indicating if NEARESTMV, NEARMV, ZEROMV, NEWMV + // modes are used in order from LSB to MSB for each BLOCK_SIZE. + int inter_mode_mask[BLOCK_SIZES]; + + // This feature controls whether we do the expensive context update and + // calculation in the rd coefficient costing loop. + int use_fast_coef_costing; + + // This feature controls the tolerence vs target used in deciding whether to + // recode a frame. It has no meaning if recode is disabled. + int recode_tolerance_low; + int recode_tolerance_high; + + // This variable controls the maximum block size where intra blocks can be + // used in inter frames. + // TODO(aconverse): Fold this into one of the other many mode skips + BLOCK_SIZE max_intra_bsize; + + // The frequency that we check if SOURCE_VAR_BASED_PARTITION or + // FIXED_PARTITION search type should be used. + int search_type_check_frequency; + + // When partition is pre-set, the inter prediction result from pick_inter_mode + // can be reused in final block encoding process. It is enabled only for real- + // time mode speed 6. + int reuse_inter_pred_sby; + + // This variable sets the encode_breakout threshold. Currently, it is only + // enabled in real time mode. + int encode_breakout_thresh; + + // default interp filter choice + INTERP_FILTER default_interp_filter; + + // Early termination in transform size search, which only applies while + // tx_size_search_method is USE_FULL_RD. + int tx_size_search_breakout; + + // adaptive interp_filter search to allow skip of certain filter types. + int adaptive_interp_filter_search; + + // mask for skip evaluation of certain interp_filter type. + INTERP_FILTER_MASK interp_filter_search_mask; + + // Partition search early breakout thresholds. + PARTITION_SEARCH_BREAKOUT_THR partition_search_breakout_thr; + + struct { + // Use ML-based partition search early breakout. + int search_breakout; + // Higher values mean more aggressiveness for partition search breakout that + // results in better encoding speed but worse compression performance. + float search_breakout_thresh[3]; + + // Machine-learning based partition search early termination + int search_early_termination; + + // Machine-learning based partition search pruning using prediction residue + // variance. + int var_pruning; + + // Threshold values used for ML based rectangular partition search pruning. + // If < 0, the feature is turned off. + // Higher values mean more aggressiveness to skip rectangular partition + // search that results in better encoding speed but worse coding + // performance. + int prune_rect_thresh[4]; + } rd_ml_partition; + + // Fast approximation of vp9_model_rd_from_var_lapndz + int simple_model_rd_from_var; + + // Skip a number of expensive mode evaluations for blocks with zero source + // variance. + int short_circuit_flat_blocks; + + // Skip a number of expensive mode evaluations for blocks with very low + // temporal variance. If the low temporal variance flag is set for a block, + // do the following: + // 1: Skip all golden modes and ALL INTRA for bsize >= 32x32. + // 2: Skip golden non-zeromv and newmv-last for bsize >= 16x16, skip ALL + // INTRA for bsize >= 32x32 and vert/horz INTRA for bsize 16x16, 16x32 and + // 32x16. + // 3: Same as (2), but also skip golden zeromv. + int short_circuit_low_temp_var; + + // Limits the rd-threshold update for early exit for the newmv-last mode, + // for non-rd mode. + int limit_newmv_early_exit; + + // Adds a bias against golden reference, for non-rd mode. + int bias_golden; + + // Bias to use base mv and skip 1/4 subpel search when use base mv in + // enhancement layer. + int base_mv_aggressive; + + // Global flag to enable partition copy from the previous frame. + int copy_partition_flag; + + // Compute the source sad for every superblock of the frame, + // prior to encoding the frame, to be used to bypass some encoder decisions. + int use_source_sad; + + int use_simple_block_yrd; + + // If source sad of superblock is high (> adapt_partition_thresh), will switch + // from VARIANCE_PARTITION to REFERENCE_PARTITION (which selects partition + // based on the nonrd-pickmode). + int adapt_partition_source_sad; + int adapt_partition_thresh; + + // Enable use of alt-refs in 1 pass VBR. + int use_altref_onepass; + + // Enable use of compound prediction, for nonrd_pickmode with nonzero lag. + int use_compound_nonrd_pickmode; + + // Always use nonrd_pick_intra for all block sizes on keyframes. + int nonrd_keyframe; + + // For SVC: enables use of partition from lower spatial resolution. + int svc_use_lowres_part; + + // Flag to indicate process for handling overshoot on slide/scene change, + // for real-time CBR mode. + OVERSHOOT_DETECTION_CBR_RT overshoot_detection_cbr_rt; + + // Disable partitioning of 16x16 blocks. + int disable_16x16part_nonkey; + + // Allow for disabling golden reference. + int disable_golden_ref; + + // Allow sub-pixel search to use interpolation filters with different taps in + // order to achieve accurate motion search result. + SUBPEL_SEARCH_TYPE use_accurate_subpel_search; + + // Search method used by temporal filtering in full_pixel_motion_search. + SEARCH_METHODS temporal_filter_search_method; + + // Use machine learning based partition search. + int nonrd_use_ml_partition; + + // Multiplier for base thresold for variance partitioning. + int variance_part_thresh_mult; + + // Force subpel motion filter to always use SMOOTH_FILTER. + int force_smooth_interpol; + + // For real-time mode: force DC only under intra search when content + // does not have high souce SAD. + int rt_intra_dc_only_low_content; + + // The encoder has a feature that skips forward transform and quantization + // based on a model rd estimation to reduce encoding time. + // However, this feature is dangerous since it could lead to bad perceptual + // quality. This flag is added to guard the feature. + int allow_skip_txfm_ac_dc; +} SPEED_FEATURES; + +struct VP9_COMP; + +void vp9_set_speed_features_framesize_independent(struct VP9_COMP *cpi, + int speed); +void vp9_set_speed_features_framesize_dependent(struct VP9_COMP *cpi, + int speed); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VPX_VP9_ENCODER_VP9_SPEED_FEATURES_H_ |