encoder.h

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/*
 * 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_ENCODER_H_
#define AOM_AV1_ENCODER_ENCODER_H_
 
#include <stdbool.h>
#include <stdio.h>
 
#include "config/aom_config.h"
 
#include "aom/aomcx.h"
 
#include "av1/common/alloccommon.h"
#include "av1/common/av1_common_int.h"
#include "av1/common/blockd.h"
#include "av1/common/entropymode.h"
#include "av1/common/enums.h"
#include "av1/common/resize.h"
#include "av1/common/thread_common.h"
#include "av1/common/timing.h"
#include "av1/encoder/aq_cyclicrefresh.h"
#include "av1/encoder/av1_quantize.h"
#include "av1/encoder/block.h"
#include "av1/encoder/context_tree.h"
#include "av1/encoder/encodemb.h"
#include "av1/encoder/firstpass.h"
#include "av1/encoder/global_motion.h"
#include "av1/encoder/level.h"
#include "av1/encoder/lookahead.h"
#include "av1/encoder/mcomp.h"
#include "av1/encoder/pickcdef.h"
#include "av1/encoder/ratectrl.h"
#include "av1/encoder/rd.h"
#include "av1/encoder/speed_features.h"
#include "av1/encoder/svc_layercontext.h"
#include "av1/encoder/temporal_filter.h"
#include "av1/encoder/tokenize.h"
#include "av1/encoder/tpl_model.h"
#include "av1/encoder/av1_noise_estimate.h"
 
#if CONFIG_INTERNAL_STATS
#include "aom_dsp/ssim.h"
#endif
#include "aom_dsp/variance.h"
#if CONFIG_DENOISE
#include "aom_dsp/noise_model.h"
#endif
#if CONFIG_TUNE_VMAF
#include "av1/encoder/tune_vmaf.h"
#endif
#if CONFIG_AV1_TEMPORAL_DENOISING
#include "av1/encoder/av1_temporal_denoiser.h"
#endif
#if CONFIG_TUNE_BUTTERAUGLI
#include "av1/encoder/tune_butteraugli.h"
#endif
 
#include "aom/internal/aom_codec_internal.h"
#include "aom_util/aom_thread.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
// TODO(yunqing, any): Added suppression tag to quiet Doxygen warnings. Need to
// adjust it while we work on documentation.
// Number of frames required to test for scene cut detection
#define SCENE_CUT_KEY_TEST_INTERVAL 16
 
// Rational number with an int64 numerator
// This structure holds a fractional value
typedef struct aom_rational64 {
  int64_t num;       // fraction numerator
  int den;           // fraction denominator
} aom_rational64_t;  // alias for struct aom_rational
 
enum {
  NORMAL = 0,
  FOURFIVE = 1,
  THREEFIVE = 2,
  THREEFOUR = 3,
  ONEFOUR = 4,
  ONEEIGHT = 5,
  ONETWO = 6
} UENUM1BYTE(AOM_SCALING);
 
enum {
  // Good Quality Fast Encoding. The encoder balances quality with the amount of
  // time it takes to encode the output. Speed setting controls how fast.
  GOOD,
  // Realtime Fast Encoding. Will force some restrictions on bitrate
  // constraints.
  REALTIME,
  // All intra mode. All the frames are coded as intra frames.
  ALLINTRA
} UENUM1BYTE(MODE);
 
enum {
  FRAMEFLAGS_KEY = 1 << 0,
  FRAMEFLAGS_GOLDEN = 1 << 1,
  FRAMEFLAGS_BWDREF = 1 << 2,
  // TODO(zoeliu): To determine whether a frame flag is needed for ALTREF2_FRAME
  FRAMEFLAGS_ALTREF = 1 << 3,
  FRAMEFLAGS_INTRAONLY = 1 << 4,
  FRAMEFLAGS_SWITCH = 1 << 5,
  FRAMEFLAGS_ERROR_RESILIENT = 1 << 6,
} UENUM1BYTE(FRAMETYPE_FLAGS);
 
enum {
  NO_AQ = 0,
  VARIANCE_AQ = 1,
  COMPLEXITY_AQ = 2,
  CYCLIC_REFRESH_AQ = 3,
  AQ_MODE_COUNT  // This should always be the last member of the enum
} UENUM1BYTE(AQ_MODE);
enum {
  NO_DELTA_Q = 0,
  DELTA_Q_OBJECTIVE = 1,   // Modulation to improve objective quality
  DELTA_Q_PERCEPTUAL = 2,  // Modulation to improve perceptual quality
  DELTA_Q_MODE_COUNT       // This should always be the last member of the enum
} UENUM1BYTE(DELTAQ_MODE);
 
enum {
  RESIZE_NONE = 0,     // No frame resizing allowed.
  RESIZE_FIXED = 1,    // All frames are coded at the specified scale.
  RESIZE_RANDOM = 2,   // All frames are coded at a random scale.
  RESIZE_DYNAMIC = 3,  // Frames coded at lower scale based on rate control.
  RESIZE_MODES
} UENUM1BYTE(RESIZE_MODE);
 
enum {
  SS_CFG_SRC = 0,
  SS_CFG_LOOKAHEAD = 1,
  SS_CFG_FPF = 2,
  SS_CFG_TOTAL = 3
} UENUM1BYTE(SS_CFG_OFFSET);
 
enum {
  DISABLE_SCENECUT,        // For LAP, lag_in_frames < 19
  ENABLE_SCENECUT_MODE_1,  // For LAP, lag_in_frames >=19 and < 33
  ENABLE_SCENECUT_MODE_2   // For twopass and LAP - lag_in_frames >=33
} UENUM1BYTE(SCENECUT_MODE);
 
#define MAX_VBR_CORPUS_COMPLEXITY 10000

 
typedef enum {
  MOD_FP,           // First pass
  MOD_TF,           // Temporal filtering
  MOD_TPL,          // TPL
  MOD_GME,          // Global motion estimation
  MOD_ENC,          // Encode stage
  MOD_LPF,          // Deblocking loop filter
  MOD_CDEF_SEARCH,  // CDEF search
  MOD_LR,           // Loop restoration filtering
  NUM_MT_MODULES
} MULTI_THREADED_MODULES;


typedef enum {
  COST_UPD_SB,    
  COST_UPD_SBROW, 
  COST_UPD_TILE,  
  COST_UPD_OFF,   
} COST_UPDATE_TYPE;

typedef struct {
  RESIZE_MODE resize_mode;
  uint8_t resize_scale_denominator;
  uint8_t resize_kf_scale_denominator;
} ResizeCfg;

typedef struct {
  bool enable_rect_partitions;
  bool enable_ab_partitions;
  bool enable_1to4_partitions;
  BLOCK_SIZE min_partition_size;
  BLOCK_SIZE max_partition_size;
} PartitionCfg;

typedef struct {
  bool enable_intra_edge_filter;
  bool enable_filter_intra;
  bool enable_smooth_intra;
  bool enable_paeth_intra;
  bool enable_cfl_intra;
  bool enable_diagonal_intra;
  bool enable_angle_delta;
} IntraModeCfg;

typedef struct {
  bool enable_tx64;
  bool enable_flip_idtx;
  bool enable_rect_tx;
  bool reduced_tx_type_set;
  bool use_intra_dct_only;
  bool use_inter_dct_only;
  bool use_intra_default_tx_only;
} TxfmSizeTypeCfg;

typedef struct {
  bool enable_dist_wtd_comp;
  bool enable_masked_comp;
  bool enable_smooth_interintra;
  bool enable_diff_wtd_comp;
  bool enable_interinter_wedge;
  bool enable_interintra_wedge;
} CompoundTypeCfg;

typedef struct {
  int superres_qthresh;
  int superres_kf_qthresh;
  uint8_t superres_scale_denominator;
  uint8_t superres_kf_scale_denominator;
  aom_superres_mode superres_mode;
  bool enable_superres;
} SuperResCfg;

typedef struct {
  int key_freq_min;

  int key_freq_max;

  int enable_keyframe_filtering;

  int sframe_dist;

  int sframe_mode;

  bool auto_key;

  bool fwd_kf_enabled;

  bool enable_sframe;

  bool enable_intrabc;
} KeyFrameCfg;

typedef struct {
  // BUFFERING PARAMETERS
  int64_t starting_buffer_level_ms;
  int64_t optimal_buffer_level_ms;
  int64_t maximum_buffer_size_ms;

  int64_t target_bandwidth;

  unsigned int vbr_corpus_complexity_lap;
  unsigned int max_intra_bitrate_pct;
  unsigned int max_inter_bitrate_pct;
  unsigned int gf_cbr_boost_pct;
  unsigned int min_cr;
  int drop_frames_water_mark;
  int under_shoot_pct;
  int over_shoot_pct;
  int worst_allowed_q;
  int best_allowed_q;
  int cq_level;
  enum aom_rc_mode mode;
  int vbrbias;
  int vbrmin_section;
  int vbrmax_section;
} RateControlCfg;

typedef struct {
  // Indicates the number of frames lag before encoding is started.
  int lag_in_frames;
  // Indicates the minimum gf/arf interval to be used.
  int min_gf_interval;
  // Indicates the maximum gf/arf interval to be used.
  int max_gf_interval;
  // Indicates the minimum height for GF group pyramid structure to be used.
  int gf_min_pyr_height;
  // Indicates the maximum height for GF group pyramid structure to be used.
  int gf_max_pyr_height;
  // Indicates if automatic set and use of altref frames should be enabled.
  bool enable_auto_arf;
  // Indicates if automatic set and use of (b)ackward (r)ef (f)rames should be
  // enabled.
  bool enable_auto_brf;
} GFConfig;
 
typedef struct {
  // Indicates the number of tile groups.
  unsigned int num_tile_groups;
  // Indicates the MTU size for a tile group. If mtu is non-zero,
  // num_tile_groups is set to DEFAULT_MAX_NUM_TG.
  unsigned int mtu;
  // Indicates the number of tile columns in log2.
  int tile_columns;
  // Indicates the number of tile rows in log2.
  int tile_rows;
  // Indicates the number of widths in the tile_widths[] array.
  int tile_width_count;
  // Indicates the number of heights in the tile_heights[] array.
  int tile_height_count;
  // Indicates the tile widths, and may be empty.
  int tile_widths[MAX_TILE_COLS];
  // Indicates the tile heights, and may be empty.
  int tile_heights[MAX_TILE_ROWS];
  // Indicates if large scale tile coding should be used.
  bool enable_large_scale_tile;
  // Indicates if single tile decoding mode should be enabled.
  bool enable_single_tile_decoding;
  // Indicates if EXT_TILE_DEBUG should be enabled.
  bool enable_ext_tile_debug;
} TileConfig;
 
typedef struct {
  // Indicates the width of the input frame.
  int width;
  // Indicates the height of the input frame.
  int height;
  // If forced_max_frame_width is non-zero then it is used to force the maximum
  // frame width written in write_sequence_header().
  int forced_max_frame_width;
  // If forced_max_frame_width is non-zero then it is used to force the maximum
  // frame height written in write_sequence_header().
  int forced_max_frame_height;
  // Indicates the frame width after applying both super-resolution and resize
  // to the coded frame.
  int render_width;
  // Indicates the frame height after applying both super-resolution and resize
  // to the coded frame.
  int render_height;
} FrameDimensionCfg;
 
typedef struct {
  // Indicates if warped motion should be enabled.
  bool enable_warped_motion;
  // Indicates if warped motion should be evaluated or not.
  bool allow_warped_motion;
  // Indicates if OBMC motion should be enabled.
  bool enable_obmc;
} MotionModeCfg;
 
typedef struct {
  // Timing info for each frame.
  aom_timing_info_t timing_info;
  // Indicates the number of time units of a decoding clock.
  uint32_t num_units_in_decoding_tick;
  // Indicates if decoder model information is present in the coded sequence
  // header.
  bool decoder_model_info_present_flag;
  // Indicates if display model information is present in the coded sequence
  // header.
  bool display_model_info_present_flag;
  // Indicates if timing info for each frame is present.
  bool timing_info_present;
} DecoderModelCfg;
 
typedef struct {
  // Indicates the update frequency for coeff costs.
  COST_UPDATE_TYPE coeff;
  // Indicates the update frequency for mode costs.
  COST_UPDATE_TYPE mode;
  // Indicates the update frequency for mv costs.
  COST_UPDATE_TYPE mv;
  // Indicates the update frequency for dv costs.
  COST_UPDATE_TYPE dv;
} CostUpdateFreq;
 
typedef struct {
  // Indicates the maximum number of reference frames allowed per frame.
  unsigned int max_reference_frames;
  // Indicates if the reduced set of references should be enabled.
  bool enable_reduced_reference_set;
  // Indicates if one-sided compound should be enabled.
  bool enable_onesided_comp;
} RefFrameCfg;
 
typedef struct {
  // Indicates the color space that should be used.
  aom_color_primaries_t color_primaries;
  // Indicates the characteristics of transfer function to be used.
  aom_transfer_characteristics_t transfer_characteristics;
  // Indicates the matrix coefficients to be used for the transfer function.
  aom_matrix_coefficients_t matrix_coefficients;
  // Indicates the chroma 4:2:0 sample position info.
  aom_chroma_sample_position_t chroma_sample_position;
  // Indicates if a limited color range or full color range should be used.
  aom_color_range_t color_range;
} ColorCfg;
 
typedef struct {
  // Indicates if extreme motion vector unit test should be enabled or not.
  unsigned int motion_vector_unit_test;
  // Indicates if superblock multipass unit test should be enabled or not.
  unsigned int sb_multipass_unit_test;
} UnitTestCfg;
 
typedef struct {
  // Indicates the file path to the VMAF model.
  const char *vmaf_model_path;
  // Indicates the path to the film grain parameters.
  const char *film_grain_table_filename;
  // Indicates the visual tuning metric.
  aom_tune_metric tuning;
  // Indicates if the current content is screen or default type.
  aom_tune_content content;
  // Indicates the film grain parameters.
  int film_grain_test_vector;
} TuneCfg;
 
typedef struct {
  // Indicates the framerate of the input video.
  double init_framerate;
  // Indicates the bit-depth of the input video.
  unsigned int input_bit_depth;
  // Indicates the maximum number of frames to be encoded.
  unsigned int limit;
  // Indicates the chrome subsampling x value.
  unsigned int chroma_subsampling_x;
  // Indicates the chrome subsampling y value.
  unsigned int chroma_subsampling_y;
} InputCfg;
 
typedef struct {
  // List of QP offsets for: keyframe, ALTREF, and 3 levels of internal ARFs.
  // If any of these values are negative, fixed offsets are disabled.
  // Uses internal q range.
  double fixed_qp_offsets[FIXED_QP_OFFSET_COUNT];
  // If true, encoder will use fixed QP offsets, that are either:
  // - Given by the user, and stored in 'fixed_qp_offsets' array, OR
  // - Picked automatically from cq_level.
  int use_fixed_qp_offsets;
  // Indicates the minimum flatness of the quantization matrix.
  int qm_minlevel;
  // Indicates the maximum flatness of the quantization matrix.
  int qm_maxlevel;
  // Indicates if adaptive quantize_b should be enabled.
  int quant_b_adapt;
  // Indicates the Adaptive Quantization mode to be used.
  AQ_MODE aq_mode;
  // Indicates the delta q mode to be used.
  DELTAQ_MODE deltaq_mode;
  // Indicates if delta quantization should be enabled in chroma planes.
  bool enable_chroma_deltaq;
  // Indicates if encoding with quantization matrices should be enabled.
  bool using_qm;
} QuantizationCfg;

typedef struct {
  int sharpness;

  int disable_trellis_quant;

  int arnr_max_frames;

  int arnr_strength;

  uint8_t cdf_update_mode;

  bool enable_tpl_model;

  bool enable_overlay;
} AlgoCfg;
 
typedef struct {
  // Indicates the codec bit-depth.
  aom_bit_depth_t bit_depth;
  // Indicates the superblock size that should be used by the encoder.
  aom_superblock_size_t superblock_size;
  // Indicates if loopfilter modulation should be enabled.
  bool enable_deltalf_mode;
  // Indicates if CDEF should be enabled.
  bool enable_cdef;
  // Indicates if loop restoration filter should be enabled.
  bool enable_restoration;
  // When enabled, video mode should be used even for single frame input.
  bool force_video_mode;
  // Indicates if the error resiliency features should be enabled.
  bool error_resilient_mode;
  // Indicates if frame parallel decoding feature should be enabled.
  bool frame_parallel_decoding_mode;
  // Indicates if the input should be encoded as monochrome.
  bool enable_monochrome;
  // When enabled, the encoder will use a full header even for still pictures.
  // When disabled, a reduced header is used for still pictures.
  bool full_still_picture_hdr;
  // Indicates if dual interpolation filters should be enabled.
  bool enable_dual_filter;
  // Indicates if frame order hint should be enabled or not.
  bool enable_order_hint;
  // Indicates if ref_frame_mvs should be enabled at the sequence level.
  bool ref_frame_mvs_present;
  // Indicates if ref_frame_mvs should be enabled at the frame level.
  bool enable_ref_frame_mvs;
  // Indicates if interintra compound mode is enabled.
  bool enable_interintra_comp;
  // Indicates if global motion should be enabled.
  bool enable_global_motion;
  // Indicates if palette should be enabled.
  bool enable_palette;
} ToolCfg;

typedef struct AV1EncoderConfig {
  // Configuration related to the input video.
  InputCfg input_cfg;
 
  // Configuration related to frame-dimensions.
  FrameDimensionCfg frm_dim_cfg;

  AlgoCfg algo_cfg;

  KeyFrameCfg kf_cfg;

  RateControlCfg rc_cfg;
 
  // Configuration related to Quantization.
  QuantizationCfg q_cfg;
 
  // Internal frame size scaling.
  ResizeCfg resize_cfg;
 
  // Frame Super-Resolution size scaling.
  SuperResCfg superres_cfg;

  aom_fixed_buf_t twopass_stats_in;
 
  // Configuration related to encoder toolsets.
  ToolCfg tool_cfg;
 
  // Configuration related to Group of frames.
  GFConfig gf_cfg;
 
  // Tile related configuration parameters.
  TileConfig tile_cfg;
 
  // Configuration related to Tune.
  TuneCfg tune_cfg;
 
  // Configuration related to color.
  ColorCfg color_cfg;
 
  // Configuration related to decoder model.
  DecoderModelCfg dec_model_cfg;
 
  // Configuration related to reference frames.
  RefFrameCfg ref_frm_cfg;
 
  // Configuration related to unit tests.
  UnitTestCfg unit_test_cfg;
 
  // Flags related to motion mode.
  MotionModeCfg motion_mode_cfg;
 
  // Flags related to intra mode search.
  IntraModeCfg intra_mode_cfg;
 
  // Flags related to transform size/type.
  TxfmSizeTypeCfg txfm_cfg;
 
  // Flags related to compound type.
  CompoundTypeCfg comp_type_cfg;
 
  // Partition related information.
  PartitionCfg part_cfg;
 
  // Configuration related to frequency of cost update.
  CostUpdateFreq cost_upd_freq;
 
#if CONFIG_DENOISE
  // Indicates the noise level.
  float noise_level;
  // Indicates the the denoisers block size.
  int noise_block_size;
  // Indicates whether to apply denoising to the frame to be encoded
  int enable_dnl_denoising;
#endif
 
#if CONFIG_AV1_TEMPORAL_DENOISING
  // Noise sensitivity.
  int noise_sensitivity;
#endif
  // Bit mask to specify which tier each of the 32 possible operating points
  // conforms to.
  unsigned int tier_mask;
 
  // Indicates the number of pixels off the edge of a reference frame we're
  // allowed to go when forming an inter prediction.
  int border_in_pixels;
 
  // Indicates the maximum number of threads that may be used by the encoder.
  int max_threads;
 
  // Indicates the speed preset to be used.
  int speed;
 
  // Indicates the target sequence level index for each operating point(OP).
  AV1_LEVEL target_seq_level_idx[MAX_NUM_OPERATING_POINTS];
 
  // Indicates the bitstream profile to be used.
  BITSTREAM_PROFILE profile;

  enum aom_enc_pass pass;
 
  // Indicates if the encoding is GOOD or REALTIME.
  MODE mode;
 
  // Indicates if row-based multi-threading should be enabled or not.
  bool row_mt;
 
  // Indicates if 16bit frame buffers are to be used i.e., the content is >
  // 8-bit.
  bool use_highbitdepth;
 
  // Indicates the bitstream syntax mode. 0 indicates bitstream is saved as
  // Section 5 bitstream, while 1 indicates the bitstream is saved in Annex - B
  // format.
  bool save_as_annexb;

} AV1EncoderConfig;

static INLINE int is_lossless_requested(const RateControlCfg *const rc_cfg) {
  return rc_cfg->best_allowed_q == 0 && rc_cfg->worst_allowed_q == 0;
}

typedef struct {
  int obmc_probs[FRAME_UPDATE_TYPES][BLOCK_SIZES_ALL];

  int warped_probs[FRAME_UPDATE_TYPES];

  int tx_type_probs[FRAME_UPDATE_TYPES][TX_SIZES_ALL][TX_TYPES];

  int switchable_interp_probs[FRAME_UPDATE_TYPES][SWITCHABLE_FILTER_CONTEXTS]
                             [SWITCHABLE_FILTERS];
} FrameProbInfo;

 
typedef struct FRAME_COUNTS {
// Note: This structure should only contain 'unsigned int' fields, or
// aggregates built solely from 'unsigned int' fields/elements
#if CONFIG_ENTROPY_STATS
  unsigned int kf_y_mode[KF_MODE_CONTEXTS][KF_MODE_CONTEXTS][INTRA_MODES];
  unsigned int angle_delta[DIRECTIONAL_MODES][2 * MAX_ANGLE_DELTA + 1];
  unsigned int y_mode[BLOCK_SIZE_GROUPS][INTRA_MODES];
  unsigned int uv_mode[CFL_ALLOWED_TYPES][INTRA_MODES][UV_INTRA_MODES];
  unsigned int cfl_sign[CFL_JOINT_SIGNS];
  unsigned int cfl_alpha[CFL_ALPHA_CONTEXTS][CFL_ALPHABET_SIZE];
  unsigned int palette_y_mode[PALATTE_BSIZE_CTXS][PALETTE_Y_MODE_CONTEXTS][2];
  unsigned int palette_uv_mode[PALETTE_UV_MODE_CONTEXTS][2];
  unsigned int palette_y_size[PALATTE_BSIZE_CTXS][PALETTE_SIZES];
  unsigned int palette_uv_size[PALATTE_BSIZE_CTXS][PALETTE_SIZES];
  unsigned int palette_y_color_index[PALETTE_SIZES]
                                    [PALETTE_COLOR_INDEX_CONTEXTS]
                                    [PALETTE_COLORS];
  unsigned int palette_uv_color_index[PALETTE_SIZES]
                                     [PALETTE_COLOR_INDEX_CONTEXTS]
                                     [PALETTE_COLORS];
  unsigned int partition[PARTITION_CONTEXTS][EXT_PARTITION_TYPES];
  unsigned int txb_skip[TOKEN_CDF_Q_CTXS][TX_SIZES][TXB_SKIP_CONTEXTS][2];
  unsigned int eob_extra[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
                        [EOB_COEF_CONTEXTS][2];
  unsigned int dc_sign[PLANE_TYPES][DC_SIGN_CONTEXTS][2];
  unsigned int coeff_lps[TX_SIZES][PLANE_TYPES][BR_CDF_SIZE - 1][LEVEL_CONTEXTS]
                        [2];
  unsigned int eob_flag[TX_SIZES][PLANE_TYPES][EOB_COEF_CONTEXTS][2];
  unsigned int eob_multi16[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][5];
  unsigned int eob_multi32[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][6];
  unsigned int eob_multi64[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][7];
  unsigned int eob_multi128[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][8];
  unsigned int eob_multi256[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][9];
  unsigned int eob_multi512[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][10];
  unsigned int eob_multi1024[TOKEN_CDF_Q_CTXS][PLANE_TYPES][2][11];
  unsigned int coeff_lps_multi[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
                              [LEVEL_CONTEXTS][BR_CDF_SIZE];
  unsigned int coeff_base_multi[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
                               [SIG_COEF_CONTEXTS][NUM_BASE_LEVELS + 2];
  unsigned int coeff_base_eob_multi[TOKEN_CDF_Q_CTXS][TX_SIZES][PLANE_TYPES]
                                   [SIG_COEF_CONTEXTS_EOB][NUM_BASE_LEVELS + 1];
  unsigned int newmv_mode[NEWMV_MODE_CONTEXTS][2];
  unsigned int zeromv_mode[GLOBALMV_MODE_CONTEXTS][2];
  unsigned int refmv_mode[REFMV_MODE_CONTEXTS][2];
  unsigned int drl_mode[DRL_MODE_CONTEXTS][2];
  unsigned int inter_compound_mode[INTER_MODE_CONTEXTS][INTER_COMPOUND_MODES];
  unsigned int wedge_idx[BLOCK_SIZES_ALL][16];
  unsigned int interintra[BLOCK_SIZE_GROUPS][2];
  unsigned int interintra_mode[BLOCK_SIZE_GROUPS][INTERINTRA_MODES];
  unsigned int wedge_interintra[BLOCK_SIZES_ALL][2];
  unsigned int compound_type[BLOCK_SIZES_ALL][MASKED_COMPOUND_TYPES];
  unsigned int motion_mode[BLOCK_SIZES_ALL][MOTION_MODES];
  unsigned int obmc[BLOCK_SIZES_ALL][2];
  unsigned int intra_inter[INTRA_INTER_CONTEXTS][2];
  unsigned int comp_inter[COMP_INTER_CONTEXTS][2];
  unsigned int comp_ref_type[COMP_REF_TYPE_CONTEXTS][2];
  unsigned int uni_comp_ref[UNI_COMP_REF_CONTEXTS][UNIDIR_COMP_REFS - 1][2];
  unsigned int single_ref[REF_CONTEXTS][SINGLE_REFS - 1][2];
  unsigned int comp_ref[REF_CONTEXTS][FWD_REFS - 1][2];
  unsigned int comp_bwdref[REF_CONTEXTS][BWD_REFS - 1][2];
  unsigned int intrabc[2];
 
  unsigned int txfm_partition[TXFM_PARTITION_CONTEXTS][2];
  unsigned int intra_tx_size[MAX_TX_CATS][TX_SIZE_CONTEXTS][MAX_TX_DEPTH + 1];
  unsigned int skip_mode[SKIP_MODE_CONTEXTS][2];
  unsigned int skip_txfm[SKIP_CONTEXTS][2];
  unsigned int compound_index[COMP_INDEX_CONTEXTS][2];
  unsigned int comp_group_idx[COMP_GROUP_IDX_CONTEXTS][2];
  unsigned int delta_q[DELTA_Q_PROBS][2];
  unsigned int delta_lf_multi[FRAME_LF_COUNT][DELTA_LF_PROBS][2];
  unsigned int delta_lf[DELTA_LF_PROBS][2];
 
  unsigned int inter_ext_tx[EXT_TX_SETS_INTER][EXT_TX_SIZES][TX_TYPES];
  unsigned int intra_ext_tx[EXT_TX_SETS_INTRA][EXT_TX_SIZES][INTRA_MODES]
                           [TX_TYPES];
  unsigned int filter_intra_mode[FILTER_INTRA_MODES];
  unsigned int filter_intra[BLOCK_SIZES_ALL][2];
  unsigned int switchable_restore[RESTORE_SWITCHABLE_TYPES];
  unsigned int wiener_restore[2];
  unsigned int sgrproj_restore[2];
#endif  // CONFIG_ENTROPY_STATS
 
  unsigned int switchable_interp[SWITCHABLE_FILTER_CONTEXTS]
                                [SWITCHABLE_FILTERS];
} FRAME_COUNTS;
 
#define INTER_MODE_RD_DATA_OVERALL_SIZE 6400
 
typedef struct {
  int ready;
  double a;
  double b;
  double dist_mean;
  double ld_mean;
  double sse_mean;
  double sse_sse_mean;
  double sse_ld_mean;
  int num;
  double dist_sum;
  double ld_sum;
  double sse_sum;
  double sse_sse_sum;
  double sse_ld_sum;
} InterModeRdModel;
 
typedef struct {
  int idx;
  int64_t rd;
} RdIdxPair;
// TODO(angiebird): This is an estimated size. We still need to figure what is
// the maximum number of modes.
#define MAX_INTER_MODES 1024
// TODO(any): rename this struct to something else. There is already another
// struct called inter_mode_info, which makes this terribly confusing.
typedef struct inter_modes_info {
  int num;
  MB_MODE_INFO mbmi_arr[MAX_INTER_MODES];
  int mode_rate_arr[MAX_INTER_MODES];
  int64_t sse_arr[MAX_INTER_MODES];
  int64_t est_rd_arr[MAX_INTER_MODES];
  RdIdxPair rd_idx_pair_arr[MAX_INTER_MODES];
  RD_STATS rd_cost_arr[MAX_INTER_MODES];
  RD_STATS rd_cost_y_arr[MAX_INTER_MODES];
  RD_STATS rd_cost_uv_arr[MAX_INTER_MODES];
} InterModesInfo;

typedef struct {
  // TODO(kyslov): consider changing to 64bit
 
  // This struct is used for computing variance in choose_partitioning(), where
  // the max number of samples within a superblock is 32x32 (with 4x4 avg).
  // With 8bit bitdepth, uint32_t is enough for sum_square_error (2^8 * 2^8 * 32
  // * 32 = 2^26). For high bitdepth we need to consider changing this to 64 bit
  uint32_t sum_square_error;
  int32_t sum_error;
  int log2_count;
  int variance;
} VPartVar;
 
typedef struct {
  VPartVar none;
  VPartVar horz[2];
  VPartVar vert[2];
} VPVariance;
 
typedef struct {
  VPVariance part_variances;
  VPartVar split[4];
} VP4x4;
 
typedef struct {
  VPVariance part_variances;
  VP4x4 split[4];
} VP8x8;
 
typedef struct {
  VPVariance part_variances;
  VP8x8 split[4];
} VP16x16;
 
typedef struct {
  VPVariance part_variances;
  VP16x16 split[4];
} VP32x32;
 
typedef struct {
  VPVariance part_variances;
  VP32x32 split[4];
} VP64x64;
 
typedef struct {
  VPVariance part_variances;
  VP64x64 *split;
} VP128x128;


typedef struct {
  int64_t thresholds[5];

  int64_t threshold_minmax;
} VarBasedPartitionInfo;

typedef struct {
#if CONFIG_MULTITHREAD
  pthread_mutex_t *mutex_; 
  pthread_cond_t *cond_;   
#endif  // CONFIG_MULTITHREAD
  int *num_finished_cols;
  int sync_range;
  int rows;
  int next_mi_row;
  int num_threads_working;
} AV1EncRowMultiThreadSync;

 
// TODO(jingning) All spatially adaptive variables should go to TileDataEnc.
typedef struct TileDataEnc {
  TileInfo tile_info;
  DECLARE_ALIGNED(16, FRAME_CONTEXT, tctx);
  FRAME_CONTEXT *row_ctx;
  uint8_t allow_update_cdf;
  InterModeRdModel inter_mode_rd_models[BLOCK_SIZES_ALL];
  AV1EncRowMultiThreadSync row_mt_sync;
  MV firstpass_top_mv;
} TileDataEnc;
 
typedef struct RD_COUNTS {
  int64_t comp_pred_diff[REFERENCE_MODES];
  int compound_ref_used_flag;
  int skip_mode_used_flag;
  int tx_type_used[TX_SIZES_ALL][TX_TYPES];
  int obmc_used[BLOCK_SIZES_ALL][2];
  int warped_used[2];
} RD_COUNTS;
 
typedef struct ThreadData {
  MACROBLOCK mb;
  RD_COUNTS rd_counts;
  FRAME_COUNTS *counts;
  PC_TREE_SHARED_BUFFERS shared_coeff_buf;
  SIMPLE_MOTION_DATA_TREE *sms_tree;
  SIMPLE_MOTION_DATA_TREE *sms_root;
  InterModesInfo *inter_modes_info;
  uint32_t *hash_value_buffer[2][2];
  OBMCBuffer obmc_buffer;
  PALETTE_BUFFER *palette_buffer;
  CompoundTypeRdBuffers comp_rd_buffer;
  CONV_BUF_TYPE *tmp_conv_dst;
  uint8_t *tmp_pred_bufs[2];
  int intrabc_used;
  int deltaq_used;
  FRAME_CONTEXT *tctx;
  VP64x64 *vt64x64;
  int32_t num_64x64_blocks;
  PICK_MODE_CONTEXT *firstpass_ctx;
  TemporalFilterData tf_data;
  TplTxfmStats tpl_txfm_stats;
} ThreadData;
 
struct EncWorkerData;


typedef struct {
  int allocated_tile_rows;
  int allocated_tile_cols;
  int allocated_rows;
  int allocated_cols;

  int thread_id_to_tile_id[MAX_NUM_THREADS];
 
#if CONFIG_MULTITHREAD
  pthread_mutex_t *mutex_;
#endif

  void (*sync_read_ptr)(AV1EncRowMultiThreadSync *const, int, int);
  void (*sync_write_ptr)(AV1EncRowMultiThreadSync *const, int, int, int);
} AV1EncRowMultiThreadInfo;

typedef struct MultiThreadInfo {
  int num_workers;

  int num_mod_workers[NUM_MT_MODULES];

  int fp_mt_buf_init_done;

  int enc_mt_buf_init_done;

  AVxWorker *workers;

  struct EncWorkerData *tile_thr_data;

  bool row_mt_enabled;

  AV1EncRowMultiThreadInfo enc_row_mt;

  AV1TplRowMultiThreadInfo tpl_row_mt;

  AV1LfSync lf_row_sync;

  AV1LrSync lr_row_sync;

  AV1GlobalMotionSync gm_sync;

  AV1TemporalFilterSync tf_sync;

  AV1CdefSync cdef_sync;
} MultiThreadInfo;

 
typedef struct ActiveMap {
  int enabled;
  int update;
  unsigned char *map;
} ActiveMap;


typedef struct {
  double cs_rate_array[32];
  int rate_index;
  int rate_size;
} ForceIntegerMVInfo;

 
#if CONFIG_INTERNAL_STATS
// types of stats
enum {
  STAT_Y,
  STAT_U,
  STAT_V,
  STAT_ALL,
  NUM_STAT_TYPES  // This should always be the last member of the enum
} UENUM1BYTE(StatType);
 
typedef struct IMAGE_STAT {
  double stat[NUM_STAT_TYPES];
  double worst;
} ImageStat;
#endif  // CONFIG_INTERNAL_STATS
 
typedef struct {
  int ref_count;
  YV12_BUFFER_CONFIG buf;
} EncRefCntBuffer;


typedef struct {
  MB_MODE_INFO_EXT_FRAME *frame_base;
  int alloc_size;
  int stride;
} MBMIExtFrameBufferInfo;

 
#if CONFIG_COLLECT_PARTITION_STATS
typedef struct FramePartitionTimingStats {
  int partition_decisions[6][EXT_PARTITION_TYPES];
  int partition_attempts[6][EXT_PARTITION_TYPES];
  int64_t partition_times[6][EXT_PARTITION_TYPES];
 
  int partition_redo;
} FramePartitionTimingStats;
#endif  // CONFIG_COLLECT_PARTITION_STATS
 
#if CONFIG_COLLECT_COMPONENT_TIMING
#include "aom_ports/aom_timer.h"
// Adjust the following to add new components.
enum {
  av1_encode_strategy_time,
  av1_get_second_pass_params_time,
  denoise_and_encode_time,
  apply_filtering_time,
  av1_tpl_setup_stats_time,
  encode_frame_to_data_rate_time,
  encode_with_recode_loop_time,
  loop_filter_time,
  cdef_time,
  loop_restoration_time,
  av1_pack_bitstream_final_time,
  av1_encode_frame_time,
  av1_compute_global_motion_time,
  av1_setup_motion_field_time,
  encode_sb_row_time,
 
  rd_pick_partition_time,
  av1_prune_partitions_time,
  none_partition_search_time,
  split_partition_search_time,
  rectangular_partition_search_time,
  ab_partitions_search_time,
  rd_pick_4partition_time,
  encode_sb_time,
 
  rd_pick_sb_modes_time,
  av1_rd_pick_intra_mode_sb_time,
  av1_rd_pick_inter_mode_sb_time,
  handle_inter_mode_time,
  evaluate_motion_mode_for_winner_candidates_time,
  handle_intra_mode_time,
  do_tx_search_time,
  av1_search_palette_mode_time,
  handle_newmv_time,
  compound_type_rd_time,
  interpolation_filter_search_time,
  motion_mode_rd_time,
  kTimingComponents,
} UENUM1BYTE(TIMING_COMPONENT);
 
static INLINE char const *get_component_name(int index) {
  switch (index) {
    case av1_encode_strategy_time: return "av1_encode_strategy_time";
    case av1_get_second_pass_params_time:
      return "av1_get_second_pass_params_time";
    case denoise_and_encode_time: return "denoise_and_encode_time";
    case apply_filtering_time: return "apply_filtering_time";
    case av1_tpl_setup_stats_time: return "av1_tpl_setup_stats_time";
    case encode_frame_to_data_rate_time:
      return "encode_frame_to_data_rate_time";
    case encode_with_recode_loop_time: return "encode_with_recode_loop_time";
    case loop_filter_time: return "loop_filter_time";
    case cdef_time: return "cdef_time";
    case loop_restoration_time: return "loop_restoration_time";
    case av1_pack_bitstream_final_time: return "av1_pack_bitstream_final_time";
    case av1_encode_frame_time: return "av1_encode_frame_time";
    case av1_compute_global_motion_time:
      return "av1_compute_global_motion_time";
    case av1_setup_motion_field_time: return "av1_setup_motion_field_time";
    case encode_sb_row_time: return "encode_sb_row_time";
 
    case rd_pick_partition_time: return "rd_pick_partition_time";
    case av1_prune_partitions_time: return "av1_prune_partitions_time";
    case none_partition_search_time: return "none_partition_search_time";
    case split_partition_search_time: return "split_partition_search_time";
    case rectangular_partition_search_time:
      return "rectangular_partition_search_time";
    case ab_partitions_search_time: return "ab_partitions_search_time";
    case rd_pick_4partition_time: return "rd_pick_4partition_time";
    case encode_sb_time: return "encode_sb_time";
 
    case rd_pick_sb_modes_time: return "rd_pick_sb_modes_time";
    case av1_rd_pick_intra_mode_sb_time:
      return "av1_rd_pick_intra_mode_sb_time";
    case av1_rd_pick_inter_mode_sb_time:
      return "av1_rd_pick_inter_mode_sb_time";
    case handle_inter_mode_time: return "handle_inter_mode_time";
    case evaluate_motion_mode_for_winner_candidates_time:
      return "evaluate_motion_mode_for_winner_candidates_time";
    case handle_intra_mode_time: return "handle_intra_mode_time";
    case do_tx_search_time: return "do_tx_search_time";
    case av1_search_palette_mode_time: return "av1_search_palette_mode_time";
    case handle_newmv_time: return "handle_newmv_time";
    case compound_type_rd_time: return "compound_type_rd_time";
    case interpolation_filter_search_time:
      return "interpolation_filter_search_time";
    case motion_mode_rd_time: return "motion_mode_rd_time";
    default: assert(0);
  }
  return "error";
}
#endif
 
// The maximum number of internal ARFs except ALTREF_FRAME
#define MAX_INTERNAL_ARFS (REF_FRAMES - BWDREF_FRAME - 1)


typedef struct {
  bool search_done;

  YV12_BUFFER_CONFIG *ref_buf[REF_FRAMES];

  unsigned char *src_buffer;

  int num_ref_frames[MAX_DIRECTIONS];

  FrameDistPair reference_frames[MAX_DIRECTIONS][REF_FRAMES - 1];

  int segment_map_w; 
  int segment_map_h; 

  int num_src_corners;

  int src_corners[2 * MAX_CORNERS];
} GlobalMotionInfo;

typedef struct {
  int width;  
  int height; 
} InitialDimensions;

typedef struct {
  int default_interp_skip_flags;
  uint16_t interp_filter_search_mask;
} InterpSearchFlags;

typedef struct {
  int max_mv_magnitude;
  int mv_step_param;
  fractional_mv_step_fp *find_fractional_mv_step;
  search_site_config search_site_cfg[SS_CFG_TOTAL][NUM_DISTINCT_SEARCH_METHODS];
} MotionVectorSearchParams;

typedef struct {
  bool golden_frame;  
  bool bwd_ref_frame; 
  bool alt_ref_frame; 
} RefreshFrameFlagsInfo;

typedef struct {
  int width;  
  int height; 
} ResizePendingParams;

typedef struct {
  int ref_relative_dist[INTER_REFS_PER_FRAME];
  int8_t nearest_past_ref;
  int8_t nearest_future_ref;
} RefFrameDistanceInfo;

typedef struct {
  unsigned int coeff_opt_thresholds[MODE_EVAL_TYPES][2];

  TX_SIZE_SEARCH_METHOD tx_size_search_methods[MODE_EVAL_TYPES];

  unsigned int use_transform_domain_distortion[MODE_EVAL_TYPES];

  unsigned int tx_domain_dist_threshold[MODE_EVAL_TYPES];

  unsigned int skip_txfm_level[MODE_EVAL_TYPES];

  unsigned int predict_dc_level[MODE_EVAL_TYPES];
} WinnerModeParams;

typedef struct {
  bool last_frame;     
  bool golden_frame;   
  bool bwd_ref_frame;  
  bool alt2_ref_frame; 
  bool alt_ref_frame;  
  bool update_pending;
} ExtRefreshFrameFlagsInfo;

typedef struct {
  int ref_frame_flags;

  ExtRefreshFrameFlagsInfo refresh_frame;

  bool refresh_frame_context;

  bool refresh_frame_context_pending;

  bool use_ref_frame_mvs;

  bool use_error_resilient;

  bool use_s_frame;

  bool use_primary_ref_none;
} ExternalFlags;

 
typedef struct {
  int arf_stack[FRAME_BUFFERS];
  int arf_stack_size;
  int lst_stack[FRAME_BUFFERS];
  int lst_stack_size;
  int gld_stack[FRAME_BUFFERS];
  int gld_stack_size;
} RefBufferStack;
 
typedef struct {
  // Some misc info
  int high_prec;
  int q;
  int order;
 
  // MV counters
  int inter_count;
  int intra_count;
  int default_mvs;
  int mv_joint_count[4];
  int last_bit_zero;
  int last_bit_nonzero;
 
  // Keep track of the rates
  int total_mv_rate;
  int hp_total_mv_rate;
  int lp_total_mv_rate;
 
  // Texture info
  int horz_text;
  int vert_text;
  int diag_text;
 
  // Whether the current struct contains valid data
  int valid;
} MV_STATS;
 
typedef struct {
  struct loopfilter lf;
  CdefInfo cdef_info;
  YV12_BUFFER_CONFIG copy_buffer;
  RATE_CONTROL rc;
  MV_STATS mv_stats;
} CODING_CONTEXT;
 
typedef struct {
  int frame_width;
  int frame_height;
  int mi_rows;
  int mi_cols;
  int mb_rows;
  int mb_cols;
  int num_mbs;
  aom_bit_depth_t bit_depth;
  int subsampling_x;
  int subsampling_y;
} FRAME_INFO;

typedef struct {
  int show_frame_count;
} FRAME_INDEX_SET;


typedef struct {
  uint8_t *map;
  bool has_lossless_segment;
} EncSegmentationInfo;

typedef struct {
  int64_t prev_ts_start;
  int64_t prev_ts_end;
  int64_t first_ts_start;
} TimeStamps;

typedef struct {
  tran_low_t *tcoeff;
  uint16_t *eobs;
  uint8_t *entropy_ctx;
} CoeffBufferPool;

typedef struct AV1_PRIMARY {
  struct AV1_COMP *cpi;

  struct AV1_COMP *cpi_lap;

  struct lookahead_ctx *lookahead;

  int seq_params_locked;

  struct aom_codec_pkt_list *output_pkt_list;

  int internal_altref_allowed;
} AV1_PRIMARY;

typedef struct AV1_COMP {
  AV1_PRIMARY *ppi;

  EncQuantDequantParams enc_quant_dequant_params;

  ThreadData td;

  FRAME_COUNTS counts;

  MBMIExtFrameBufferInfo mbmi_ext_info;

  CB_COEFF_BUFFER *coeff_buffer_base;

  CoeffBufferPool coeff_buffer_pool;

  AV1_COMMON common;

  AV1EncoderConfig oxcf;

  int no_show_fwd_kf;

  TRELLIS_OPT_TYPE optimize_seg_arr[MAX_SEGMENTS];

  YV12_BUFFER_CONFIG *source;

  YV12_BUFFER_CONFIG *last_source;

  YV12_BUFFER_CONFIG *unscaled_source;

  YV12_BUFFER_CONFIG scaled_source;

  YV12_BUFFER_CONFIG *unscaled_last_source;

  YV12_BUFFER_CONFIG scaled_last_source;

  YV12_BUFFER_CONFIG *unfiltered_source;

  TplParams tpl_data;

  TemporalFilterCtx tf_ctx;

  int partition_search_skippable_frame;

  ForceIntegerMVInfo force_intpel_info;

  RefCntBuffer *scaled_ref_buf[INTER_REFS_PER_FRAME];

  RefCntBuffer *last_show_frame_buf;

  RefreshFrameFlagsInfo refresh_frame;

  int fb_of_context_type[REF_FRAMES];

  ExternalFlags ext_flags;

  YV12_BUFFER_CONFIG last_frame_uf;

  YV12_BUFFER_CONFIG trial_frame_rst;

  int64_t ambient_err;

  RD_OPT rd;

  CODING_CONTEXT coding_context;

  GlobalMotionInfo gm_info;

  WinnerModeParams winner_mode_params;

  TimeStamps time_stamps;

  RATE_CONTROL rc;

  double framerate;

  int ref_frame_flags;

  int speed;

  SPEED_FEATURES sf;

  MotionVectorSearchParams mv_search_params;

  int all_one_sided_refs;

  EncSegmentationInfo enc_seg;

  CYCLIC_REFRESH *cyclic_refresh;
  ActiveMap active_map;

  aom_variance_fn_ptr_t fn_ptr[BLOCK_SIZES_ALL];

  TWO_PASS twopass;

  GF_GROUP gf_group;

  unsigned char gf_frame_index;

  GF_STATE gf_state;

  RefBufferStack ref_buffer_stack;

  YV12_BUFFER_CONFIG alt_ref_buffer;

  int show_existing_alt_ref;
 
#if CONFIG_INTERNAL_STATS
  uint64_t time_receive_data;
  uint64_t time_compress_data;
 
  unsigned int mode_chosen_counts[MAX_MODES];
 
  int count[2];
  uint64_t total_sq_error[2];
  uint64_t total_samples[2];
  ImageStat psnr[2];
 
  double total_blockiness;
  double worst_blockiness;
 
  int bytes;
  double summed_quality;
  double summed_weights;
  double summed_quality_hbd;
  double summed_weights_hbd;
  unsigned int tot_recode_hits;
  double worst_ssim;
  double worst_ssim_hbd;
 
  ImageStat fastssim;
  ImageStat psnrhvs;
 
  int b_calculate_blockiness;
  int b_calculate_consistency;
 
  double total_inconsistency;
  double worst_consistency;
  Ssimv *ssim_vars;
  Metrics metrics;
#endif

  int b_calculate_psnr;
 
#if CONFIG_SPEED_STATS
  unsigned int tx_search_count;
#endif  // CONFIG_SPEED_STATS

  int droppable;

  FRAME_INFO frame_info;

  FRAME_INDEX_SET frame_index_set;

  InitialDimensions initial_dimensions;

  int initial_mbs;

  ResizePendingParams resize_pending_params;

  TileDataEnc *tile_data;
  int allocated_tiles;

  TokenInfo token_info;

  int vaq_refresh;

  VarBasedPartitionInfo vbp_info;

  FrameProbInfo frame_probs;

  MultiThreadInfo mt_info;

  int existing_fb_idx_to_show;

  int intrabc_used;

  int prune_ref_frame_mask;

  AV1LrStruct lr_ctxt;

  aom_film_grain_table_t *film_grain_table;
 
#if CONFIG_DENOISE
  struct aom_denoise_and_model_t *denoise_and_model;
#endif

  InterpSearchFlags interp_search_flags;

  int use_screen_content_tools;

  int is_screen_content_type;
 
#if CONFIG_COLLECT_PARTITION_STATS
  FramePartitionTimingStats partition_stats;
#endif  // CONFIG_COLLECT_PARTITION_STATS
 
#if CONFIG_COLLECT_COMPONENT_TIMING
  uint64_t component_time[kTimingComponents];
  struct aom_usec_timer component_timer[kTimingComponents];
  uint64_t frame_component_time[kTimingComponents];
#endif

  AV1LevelParams level_params;

  int deltaq_used;

  RefFrameDistanceInfo ref_frame_dist_info;

  double *tpl_rdmult_scaling_factors;
  double *tpl_sb_rdmult_scaling_factors;
  double *ssim_rdmult_scaling_factors;
 
#if CONFIG_TUNE_VMAF
  TuneVMAFInfo vmaf_info;
#endif
 
#if CONFIG_TUNE_BUTTERAUGLI
  TuneButteraugliInfo butteraugli_info;
#endif

  int use_svc;
  SVC svc;

  int lap_enabled;
  COMPRESSOR_STAGE compressor_stage;

  MV_STATS mv_stats;

  FRAME_TYPE last_frame_type;

  int num_tg;

  aom_superres_mode superres_mode;

  FirstPassData firstpass_data;

  NOISE_ESTIMATE noise_estimate;
 
#if CONFIG_AV1_TEMPORAL_DENOISING
  AV1_DENOISER denoiser;
#endif

  uint8_t *consec_zero_mv;

  int frames_left;

  BLOCK_SIZE fp_block_size;

  int sb_counter;
} AV1_COMP;

typedef struct EncodeFrameInput {
  YV12_BUFFER_CONFIG *source;
  YV12_BUFFER_CONFIG *last_source;
  int64_t ts_duration;
} EncodeFrameInput;

typedef struct EncodeFrameParams {
  int error_resilient_mode;
  FRAME_TYPE frame_type;

  int primary_ref_frame;
  int order_offset;

  int show_frame;

  int refresh_frame_flags;
 
  int show_existing_frame;
  int existing_fb_idx_to_show;

  int ref_frame_flags;

  int remapped_ref_idx[REF_FRAMES];

  RefreshFrameFlagsInfo refresh_frame;

  int speed;
} EncodeFrameParams;

 
// EncodeFrameResults contains information about the result of encoding a
// single frame
typedef struct {
  size_t size;  // Size of resulting bitstream
} EncodeFrameResults;
 
// Must not be called more than once.
void av1_initialize_enc(void);
 
struct AV1_COMP *av1_create_compressor(AV1_PRIMARY *ppi, AV1EncoderConfig *oxcf,
                                       BufferPool *const pool,
                                       FIRSTPASS_STATS *frame_stats_buf,
                                       COMPRESSOR_STAGE stage,
                                       int num_lap_buffers,
                                       int lap_lag_in_frames,
                                       STATS_BUFFER_CTX *stats_buf_context);
 
struct AV1_PRIMARY *av1_create_primary_compressor(
    struct aom_codec_pkt_list *pkt_list_head);
 
void av1_remove_compressor(AV1_COMP *cpi);
 
void av1_remove_primary_compressor(AV1_PRIMARY *ppi);
 
void av1_change_config(AV1_COMP *cpi, const AV1EncoderConfig *oxcf);
 
void av1_check_initial_width(AV1_COMP *cpi, int use_highbitdepth,
                             int subsampling_x, int subsampling_y);
 
void av1_init_seq_coding_tools(SequenceHeader *seq, AV1_COMMON *cm,
                               const AV1EncoderConfig *oxcf, int use_svc);


int av1_receive_raw_frame(AV1_COMP *cpi, aom_enc_frame_flags_t frame_flags,
                          YV12_BUFFER_CONFIG *sd, int64_t time_stamp,
                          int64_t end_time_stamp);

int av1_get_compressed_data(AV1_COMP *cpi, unsigned int *frame_flags,
                            size_t *size, uint8_t *dest, int64_t *time_stamp,
                            int64_t *time_end, int flush,
                            const aom_rational64_t *timebase);

int av1_encode(AV1_COMP *const cpi, uint8_t *const dest,
               const EncodeFrameInput *const frame_input,
               const EncodeFrameParams *const frame_params,
               EncodeFrameResults *const frame_results);

int av1_get_preview_raw_frame(AV1_COMP *cpi, YV12_BUFFER_CONFIG *dest);
 
int av1_get_last_show_frame(AV1_COMP *cpi, YV12_BUFFER_CONFIG *frame);
 
aom_codec_err_t av1_copy_new_frame_enc(AV1_COMMON *cm,
                                       YV12_BUFFER_CONFIG *new_frame,
                                       YV12_BUFFER_CONFIG *sd);
 
int av1_use_as_reference(int *ext_ref_frame_flags, int ref_frame_flags);
 
int av1_copy_reference_enc(AV1_COMP *cpi, int idx, YV12_BUFFER_CONFIG *sd);
 
int av1_set_reference_enc(AV1_COMP *cpi, int idx, YV12_BUFFER_CONFIG *sd);
 
int av1_set_size_literal(AV1_COMP *cpi, int width, int height);
 
void av1_set_frame_size(AV1_COMP *cpi, int width, int height);
 
int av1_set_active_map(AV1_COMP *cpi, unsigned char *map, int rows, int cols);
 
int av1_get_active_map(AV1_COMP *cpi, unsigned char *map, int rows, int cols);
 
int av1_set_internal_size(AV1EncoderConfig *const oxcf,
                          ResizePendingParams *resize_pending_params,
                          AOM_SCALING horiz_mode, AOM_SCALING vert_mode);
 
int av1_get_quantizer(struct AV1_COMP *cpi);
 
int av1_convert_sect5obus_to_annexb(uint8_t *buffer, size_t *input_size);
 
// Set screen content options.
// This function estimates whether to use screen content tools, by counting
// the portion of blocks that have few luma colors.
// Modifies:
//   cpi->commom.features.allow_screen_content_tools
//   cpi->common.features.allow_intrabc
//   cpi->use_screen_content_tools
//   cpi->is_screen_content_type
// However, the estimation is not accurate and may misclassify videos.
// A slower but more accurate approach that determines whether to use screen
// content tools is employed later. See av1_determine_sc_tools_with_encoding().
void av1_set_screen_content_options(struct AV1_COMP *cpi,
                                    FeatureFlags *features);
 
void av1_update_frame_size(AV1_COMP *cpi);
 
// TODO(jingning): Move these functions as primitive members for the new cpi
// class.
static INLINE void stack_push(int *stack, int *stack_size, int item) {
  for (int i = *stack_size - 1; i >= 0; --i) stack[i + 1] = stack[i];
  stack[0] = item;
  ++*stack_size;
}
 
static INLINE int stack_pop(int *stack, int *stack_size) {
  if (*stack_size <= 0) return -1;
 
  int item = stack[0];
  for (int i = 0; i < *stack_size; ++i) stack[i] = stack[i + 1];
  --*stack_size;
 
  return item;
}
 
static INLINE int stack_pop_end(int *stack, int *stack_size) {
  int item = stack[*stack_size - 1];
  stack[*stack_size - 1] = -1;
  --*stack_size;
 
  return item;
}
 
static INLINE void stack_reset(int *stack, int *stack_size) {
  for (int i = 0; i < *stack_size; ++i) stack[i] = INVALID_IDX;
  *stack_size = 0;
}
 
// av1 uses 10,000,000 ticks/second as time stamp
#define TICKS_PER_SEC 10000000LL
 
static INLINE int64_t
timebase_units_to_ticks(const aom_rational64_t *timestamp_ratio, int64_t n) {
  return n * timestamp_ratio->num / timestamp_ratio->den;
}
 
static INLINE int64_t
ticks_to_timebase_units(const aom_rational64_t *timestamp_ratio, int64_t n) {
  int64_t round = timestamp_ratio->num / 2;
  if (round > 0) --round;
  return (n * timestamp_ratio->den + round) / timestamp_ratio->num;
}
 
static INLINE int frame_is_kf_gf_arf(const AV1_COMP *cpi) {
  const GF_GROUP *const gf_group = &cpi->gf_group;
  const FRAME_UPDATE_TYPE update_type =
      gf_group->update_type[cpi->gf_frame_index];
 
  return frame_is_intra_only(&cpi->common) || update_type == ARF_UPDATE ||
         update_type == GF_UPDATE;
}
 
// TODO(huisu@google.com, youzhou@microsoft.com): enable hash-me for HBD.
static INLINE int av1_use_hash_me(const AV1_COMP *const cpi) {
  return (cpi->common.features.allow_screen_content_tools &&
          cpi->common.features.allow_intrabc &&
          frame_is_intra_only(&cpi->common));
}
 
static INLINE const YV12_BUFFER_CONFIG *get_ref_frame_yv12_buf(
    const AV1_COMMON *const cm, MV_REFERENCE_FRAME ref_frame) {
  const RefCntBuffer *const buf = get_ref_frame_buf(cm, ref_frame);
  return buf != NULL ? &buf->buf : NULL;
}
 
static INLINE void alloc_frame_mvs(AV1_COMMON *const cm, RefCntBuffer *buf) {
  assert(buf != NULL);
  ensure_mv_buffer(buf, cm);
  buf->width = cm->width;
  buf->height = cm->height;
}
 
// Get the allocated token size for a tile. It does the same calculation as in
// the frame token allocation.
static INLINE unsigned int allocated_tokens(TileInfo tile, int sb_size_log2,
                                            int num_planes) {
  int tile_mb_rows = (tile.mi_row_end - tile.mi_row_start + 2) >> 2;
  int tile_mb_cols = (tile.mi_col_end - tile.mi_col_start + 2) >> 2;
 
  return get_token_alloc(tile_mb_rows, tile_mb_cols, sb_size_log2, num_planes);
}
 
static INLINE void get_start_tok(AV1_COMP *cpi, int tile_row, int tile_col,
                                 int mi_row, TokenExtra **tok, int sb_size_log2,
                                 int num_planes) {
  AV1_COMMON *const cm = &cpi->common;
  const int tile_cols = cm->tiles.cols;
  TileDataEnc *this_tile = &cpi->tile_data[tile_row * tile_cols + tile_col];
  const TileInfo *const tile_info = &this_tile->tile_info;
 
  const int tile_mb_cols =
      (tile_info->mi_col_end - tile_info->mi_col_start + 2) >> 2;
  const int tile_mb_row = (mi_row - tile_info->mi_row_start + 2) >> 2;
 
  *tok = cpi->token_info.tile_tok[tile_row][tile_col] +
         get_token_alloc(tile_mb_row, tile_mb_cols, sb_size_log2, num_planes);
}
 
void av1_apply_encoding_flags(AV1_COMP *cpi, aom_enc_frame_flags_t flags);
 
#define ALT_MIN_LAG 3
static INLINE int is_altref_enabled(int lag_in_frames, bool enable_auto_arf) {
  return lag_in_frames >= ALT_MIN_LAG && enable_auto_arf;
}
 
// Check if statistics generation stage
static INLINE int is_stat_generation_stage(const AV1_COMP *const cpi) {
  assert(IMPLIES(cpi->compressor_stage == LAP_STAGE,
                 cpi->oxcf.pass == 0 && cpi->lap_enabled));
  return (cpi->oxcf.pass == 1 || (cpi->compressor_stage == LAP_STAGE));
}
// Check if statistics consumption stage
static INLINE int is_stat_consumption_stage_twopass(const AV1_COMP *const cpi) {
  return (cpi->oxcf.pass == 2);
}
 
// Check if statistics consumption stage
static INLINE int is_stat_consumption_stage(const AV1_COMP *const cpi) {
  return (is_stat_consumption_stage_twopass(cpi) ||
          (cpi->oxcf.pass == 0 && (cpi->compressor_stage == ENCODE_STAGE) &&
           cpi->lap_enabled));
}

static INLINE int has_no_stats_stage(const AV1_COMP *const cpi) {
  assert(IMPLIES(!cpi->lap_enabled, cpi->compressor_stage == ENCODE_STAGE));
  return (cpi->oxcf.pass == 0 && !cpi->lap_enabled);
}
 
// Function return size of frame stats buffer
static INLINE int get_stats_buf_size(int num_lap_buffer, int num_lag_buffer) {
  /* if lookahead is enabled return num_lap_buffers else num_lag_buffers */
  return (num_lap_buffer > 0 ? num_lap_buffer + 1 : num_lag_buffer);
}
 
// TODO(zoeliu): To set up cpi->oxcf.gf_cfg.enable_auto_brf
 
static INLINE void set_ref_ptrs(const AV1_COMMON *cm, MACROBLOCKD *xd,
                                MV_REFERENCE_FRAME ref0,
                                MV_REFERENCE_FRAME ref1) {
  xd->block_ref_scale_factors[0] =
      get_ref_scale_factors_const(cm, ref0 >= LAST_FRAME ? ref0 : 1);
  xd->block_ref_scale_factors[1] =
      get_ref_scale_factors_const(cm, ref1 >= LAST_FRAME ? ref1 : 1);
}
 
static INLINE int get_chessboard_index(int frame_index) {
  return frame_index & 0x1;
}
 
static INLINE const int *cond_cost_list_const(const struct AV1_COMP *cpi,
                                              const int *cost_list) {
  const int use_cost_list = cpi->sf.mv_sf.subpel_search_method != SUBPEL_TREE &&
                            cpi->sf.mv_sf.use_fullpel_costlist;
  return use_cost_list ? cost_list : NULL;
}
 
static INLINE int *cond_cost_list(const struct AV1_COMP *cpi, int *cost_list) {
  const int use_cost_list = cpi->sf.mv_sf.subpel_search_method != SUBPEL_TREE &&
                            cpi->sf.mv_sf.use_fullpel_costlist;
  return use_cost_list ? cost_list : NULL;
}
 
// Compression ratio of current frame.
double av1_get_compression_ratio(const AV1_COMMON *const cm,
                                 size_t encoded_frame_size);
 
void av1_new_framerate(AV1_COMP *cpi, double framerate);
 
void av1_setup_frame_size(AV1_COMP *cpi);
 
#define LAYER_IDS_TO_IDX(sl, tl, num_tl) ((sl) * (num_tl) + (tl))
 
// Returns 1 if a frame is scaled and 0 otherwise.
static INLINE int av1_resize_scaled(const AV1_COMMON *cm) {
  return !(cm->superres_upscaled_width == cm->render_width &&
           cm->superres_upscaled_height == cm->render_height);
}
 
static INLINE int av1_frame_scaled(const AV1_COMMON *cm) {
  return !av1_superres_scaled(cm) && av1_resize_scaled(cm);
}
 
// Don't allow a show_existing_frame to coincide with an error resilient
// frame. An exception can be made for a forward keyframe since it has no
// previous dependencies.
static INLINE int encode_show_existing_frame(const AV1_COMMON *cm) {
  return cm->show_existing_frame && (!cm->features.error_resilient_mode ||
                                     cm->current_frame.frame_type == KEY_FRAME);
}
 
// Get index into the 'cpi->mbmi_ext_info.frame_base' array for the given
// 'mi_row' and 'mi_col'.
static INLINE int get_mi_ext_idx(const int mi_row, const int mi_col,
                                 const BLOCK_SIZE mi_alloc_bsize,
                                 const int mbmi_ext_stride) {
  const int mi_ext_size_1d = mi_size_wide[mi_alloc_bsize];
  const int mi_ext_row = mi_row / mi_ext_size_1d;
  const int mi_ext_col = mi_col / mi_ext_size_1d;
  return mi_ext_row * mbmi_ext_stride + mi_ext_col;
}
 
// Lighter version of set_offsets that only sets the mode info
// pointers.
static INLINE void set_mode_info_offsets(
    const CommonModeInfoParams *const mi_params,
    const MBMIExtFrameBufferInfo *const mbmi_ext_info, MACROBLOCK *const x,
    MACROBLOCKD *const xd, int mi_row, int mi_col) {
  set_mi_offsets(mi_params, xd, mi_row, mi_col);
  const int ext_idx = get_mi_ext_idx(mi_row, mi_col, mi_params->mi_alloc_bsize,
                                     mbmi_ext_info->stride);
  x->mbmi_ext_frame = mbmi_ext_info->frame_base + ext_idx;
}
 
// Check to see if the given partition size is allowed for a specified number
// of mi block rows and columns remaining in the image.
// If not then return the largest allowed partition size
static INLINE BLOCK_SIZE find_partition_size(BLOCK_SIZE bsize, int rows_left,
                                             int cols_left, int *bh, int *bw) {
  int int_size = (int)bsize;
  if (rows_left <= 0 || cols_left <= 0) {
    return AOMMIN(bsize, BLOCK_8X8);
  } else {
    for (; int_size > 0; int_size -= 3) {
      *bh = mi_size_high[int_size];
      *bw = mi_size_wide[int_size];
      if ((*bh <= rows_left) && (*bw <= cols_left)) {
        break;
      }
    }
  }
  return (BLOCK_SIZE)int_size;
}
 
static const uint8_t av1_ref_frame_flag_list[REF_FRAMES] = { 0,
                                                             AOM_LAST_FLAG,
                                                             AOM_LAST2_FLAG,
                                                             AOM_LAST3_FLAG,
                                                             AOM_GOLD_FLAG,
                                                             AOM_BWD_FLAG,
                                                             AOM_ALT2_FLAG,
                                                             AOM_ALT_FLAG };
 
// When more than 'max_allowed_refs' are available, we reduce the number of
// reference frames one at a time based on this order.
static const MV_REFERENCE_FRAME disable_order[] = {
  LAST3_FRAME,
  LAST2_FRAME,
  ALTREF2_FRAME,
  GOLDEN_FRAME,
};
 
static const MV_REFERENCE_FRAME
    ref_frame_priority_order[INTER_REFS_PER_FRAME] = {
      LAST_FRAME,    ALTREF_FRAME, BWDREF_FRAME, GOLDEN_FRAME,
      ALTREF2_FRAME, LAST2_FRAME,  LAST3_FRAME,
    };
 
static INLINE int get_ref_frame_flags(const SPEED_FEATURES *const sf,
                                      const YV12_BUFFER_CONFIG **ref_frames,
                                      const int ext_ref_frame_flags) {
  // cpi->ext_flags.ref_frame_flags allows certain reference types to be
  // disabled by the external interface.  These are set by
  // av1_apply_encoding_flags(). Start with what the external interface allows,
  // then suppress any reference types which we have found to be duplicates.
  int flags = ext_ref_frame_flags;
 
  for (int i = 1; i < INTER_REFS_PER_FRAME; ++i) {
    const YV12_BUFFER_CONFIG *const this_ref = ref_frames[i];
    // If this_ref has appeared before, mark the corresponding ref frame as
    // invalid. For nonrd mode, only disable GOLDEN_FRAME if it's the same
    // as LAST_FRAME or ALTREF_FRAME (if ALTREF is being used in nonrd).
    int index = (sf->rt_sf.use_nonrd_pick_mode &&
                 ref_frame_priority_order[i] == GOLDEN_FRAME)
                    ? (1 + sf->rt_sf.use_nonrd_altref_frame)
                    : i;
    for (int j = 0; j < index; ++j) {
      if (this_ref == ref_frames[j]) {
        flags &= ~(1 << (ref_frame_priority_order[i] - 1));
        break;
      }
    }
  }
  return flags;
}
 
// Returns a Sequence Header OBU stored in an aom_fixed_buf_t, or NULL upon
// failure. When a non-NULL aom_fixed_buf_t pointer is returned by this
// function, the memory must be freed by the caller. Both the buf member of the
// aom_fixed_buf_t, and the aom_fixed_buf_t pointer itself must be freed. Memory
// returned must be freed via call to free().
//
// Note: The OBU returned is in Low Overhead Bitstream Format. Specifically,
// the obu_has_size_field bit is set, and the buffer contains the obu_size
// field.
aom_fixed_buf_t *av1_get_global_headers(AV1_COMP *cpi);
 
#define MAX_GFUBOOST_FACTOR 10.0
#define MIN_GFUBOOST_FACTOR 4.0
 
static INLINE int is_frame_tpl_eligible(const GF_GROUP *const gf_group,
                                        uint8_t index) {
  const FRAME_UPDATE_TYPE update_type = gf_group->update_type[index];
  return update_type == ARF_UPDATE || update_type == GF_UPDATE ||
         update_type == KF_UPDATE;
}
 
static INLINE int is_frame_eligible_for_ref_pruning(const GF_GROUP *gf_group,
                                                    int selective_ref_frame,
                                                    int prune_ref_frames,
                                                    int gf_index) {
  return (selective_ref_frame > 0) && (prune_ref_frames > 0) &&
         !is_frame_tpl_eligible(gf_group, gf_index);
}
 
// Get update type of the current frame.
static INLINE FRAME_UPDATE_TYPE get_frame_update_type(const GF_GROUP *gf_group,
                                                      int gf_frame_index) {
  return gf_group->update_type[gf_frame_index];
}
 
static INLINE int av1_pixels_to_mi(int pixels) {
  return ALIGN_POWER_OF_TWO(pixels, 3) >> MI_SIZE_LOG2;
}
 
static AOM_INLINE int is_psnr_calc_enabled(const AV1_COMP *cpi) {
  const AV1_COMMON *const cm = &cpi->common;
 
  return cpi->b_calculate_psnr && !is_stat_generation_stage(cpi) &&
         cm->show_frame;
}
 
#if CONFIG_AV1_TEMPORAL_DENOISING
static INLINE int denoise_svc(const struct AV1_COMP *const cpi) {
  return (!cpi->use_svc || (cpi->use_svc && cpi->svc.spatial_layer_id >=
                                                cpi->svc.first_layer_denoise));
}
#endif
 
#if CONFIG_COLLECT_PARTITION_STATS == 2
static INLINE void av1_print_fr_partition_timing_stats(
    const FramePartitionTimingStats *part_stats, const char *filename) {
  FILE *f = fopen(filename, "w");
  if (!f) {
    return;
  }
 
  fprintf(f, "bsize,redo,");
  for (int part = 0; part < EXT_PARTITION_TYPES; part++) {
    fprintf(f, "decision_%d,", part);
  }
  for (int part = 0; part < EXT_PARTITION_TYPES; part++) {
    fprintf(f, "attempt_%d,", part);
  }
  for (int part = 0; part < EXT_PARTITION_TYPES; part++) {
    fprintf(f, "time_%d,", part);
  }
  fprintf(f, "\n");
 
  static const int bsizes[6] = { 128, 64, 32, 16, 8, 4 };
 
  for (int bsize_idx = 0; bsize_idx < 6; bsize_idx++) {
    fprintf(f, "%d,%d,", bsizes[bsize_idx], part_stats->partition_redo);
    for (int part = 0; part < EXT_PARTITION_TYPES; part++) {
      fprintf(f, "%d,", part_stats->partition_decisions[bsize_idx][part]);
    }
    for (int part = 0; part < EXT_PARTITION_TYPES; part++) {
      fprintf(f, "%d,", part_stats->partition_attempts[bsize_idx][part]);
    }
    for (int part = 0; part < EXT_PARTITION_TYPES; part++) {
      fprintf(f, "%ld,", part_stats->partition_times[bsize_idx][part]);
    }
    fprintf(f, "\n");
  }
  fclose(f);
}
#endif  // CONFIG_COLLECT_PARTITION_STATS == 2
 
#if CONFIG_COLLECT_PARTITION_STATS
static INLINE int av1_get_bsize_idx_for_part_stats(BLOCK_SIZE bsize) {
  assert(bsize == BLOCK_128X128 || bsize == BLOCK_64X64 ||
         bsize == BLOCK_32X32 || bsize == BLOCK_16X16 || bsize == BLOCK_8X8 ||
         bsize == BLOCK_4X4);
  switch (bsize) {
    case BLOCK_128X128: return 0;
    case BLOCK_64X64: return 1;
    case BLOCK_32X32: return 2;
    case BLOCK_16X16: return 3;
    case BLOCK_8X8: return 4;
    case BLOCK_4X4: return 5;
    default: assert(0 && "Invalid bsize for partition_stats."); return -1;
  }
}
#endif  // CONFIG_COLLECT_PARTITION_STATS
 
#if CONFIG_COLLECT_COMPONENT_TIMING
static INLINE void start_timing(AV1_COMP *cpi, int component) {
  aom_usec_timer_start(&cpi->component_timer[component]);
}
static INLINE void end_timing(AV1_COMP *cpi, int component) {
  aom_usec_timer_mark(&cpi->component_timer[component]);
  cpi->frame_component_time[component] +=
      aom_usec_timer_elapsed(&cpi->component_timer[component]);
}
static INLINE char const *get_frame_type_enum(int type) {
  switch (type) {
    case 0: return "KEY_FRAME";
    case 1: return "INTER_FRAME";
    case 2: return "INTRA_ONLY_FRAME";
    case 3: return "S_FRAME";
    default: assert(0);
  }
  return "error";
}
#endif

 
#ifdef __cplusplus
}  // extern "C"
#endif
 
#endif  // AOM_AV1_ENCODER_ENCODER_H_