Port folder renaming changes from AOM

Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/av1/common/onyxc_int.h b/av1/common/onyxc_int.h
new file mode 100644
index 0000000..55a8112
--- /dev/null
+++ b/av1/common/onyxc_int.h
@@ -0,0 +1,740 @@
+/*
+ *  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 VP10_COMMON_ONYXC_INT_H_
+#define VP10_COMMON_ONYXC_INT_H_
+
+#include "./vpx_config.h"
+#include "aom/internal/vpx_codec_internal.h"
+#include "aom_util/vpx_thread.h"
+#include "./vp10_rtcd.h"
+#include "av1/common/alloccommon.h"
+#include "av1/common/loopfilter.h"
+#include "av1/common/entropymv.h"
+#include "av1/common/entropy.h"
+#include "av1/common/entropymode.h"
+#include "av1/common/mv.h"
+#include "av1/common/frame_buffers.h"
+#include "av1/common/quant_common.h"
+#include "av1/common/tile_common.h"
+#include "av1/common/restoration.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define REF_FRAMES_LOG2 3
+#define REF_FRAMES (1 << REF_FRAMES_LOG2)
+
+// 4 scratch frames for the new frames to support a maximum of 4 cores decoding
+// in parallel, 3 for scaled references on the encoder.
+// TODO(hkuang): Add ondemand frame buffers instead of hardcoding the number
+// of framebuffers.
+// TODO(jkoleszar): These 3 extra references could probably come from the
+// normal reference pool.
+#define FRAME_BUFFERS (REF_FRAMES + 7)
+
+#if CONFIG_EXT_REFS
+#define FRAME_CONTEXTS_LOG2 3
+#else
+#define FRAME_CONTEXTS_LOG2 2
+#endif
+
+#define FRAME_CONTEXTS (1 << FRAME_CONTEXTS_LOG2)
+
+#define NUM_PING_PONG_BUFFERS 2
+
+typedef enum {
+  SINGLE_REFERENCE = 0,
+  COMPOUND_REFERENCE = 1,
+  REFERENCE_MODE_SELECT = 2,
+  REFERENCE_MODES = 3,
+} REFERENCE_MODE;
+
+typedef enum {
+  RESET_FRAME_CONTEXT_NONE = 0,
+  RESET_FRAME_CONTEXT_CURRENT = 1,
+  RESET_FRAME_CONTEXT_ALL = 2,
+} RESET_FRAME_CONTEXT_MODE;
+
+typedef enum {
+  /**
+   * Update frame context to values resulting from forward probability
+   * updates signaled in the frame header
+   */
+  REFRESH_FRAME_CONTEXT_FORWARD,
+  /**
+   * Update frame context to values resulting from backward probability
+   * updates based on entropy/counts in the decoded frame
+   */
+  REFRESH_FRAME_CONTEXT_BACKWARD,
+} REFRESH_FRAME_CONTEXT_MODE;
+
+typedef struct {
+  int_mv mv[2];
+  MV_REFERENCE_FRAME ref_frame[2];
+} MV_REF;
+
+typedef struct {
+  int ref_count;
+  MV_REF *mvs;
+  int mi_rows;
+  int mi_cols;
+  vpx_codec_frame_buffer_t raw_frame_buffer;
+  YV12_BUFFER_CONFIG buf;
+
+  // The Following variables will only be used in frame parallel decode.
+
+  // frame_worker_owner indicates which FrameWorker owns this buffer. NULL means
+  // that no FrameWorker owns, or is decoding, this buffer.
+  VPxWorker *frame_worker_owner;
+
+  // row and col indicate which position frame has been decoded to in real
+  // pixel unit. They are reset to -1 when decoding begins and set to INT_MAX
+  // when the frame is fully decoded.
+  int row;
+  int col;
+} RefCntBuffer;
+
+typedef struct BufferPool {
+// Protect BufferPool from being accessed by several FrameWorkers at
+// the same time during frame parallel decode.
+// TODO(hkuang): Try to use atomic variable instead of locking the whole pool.
+#if CONFIG_MULTITHREAD
+  pthread_mutex_t pool_mutex;
+#endif
+
+  // Private data associated with the frame buffer callbacks.
+  void *cb_priv;
+
+  vpx_get_frame_buffer_cb_fn_t get_fb_cb;
+  vpx_release_frame_buffer_cb_fn_t release_fb_cb;
+
+  RefCntBuffer frame_bufs[FRAME_BUFFERS];
+
+  // Frame buffers allocated internally by the codec.
+  InternalFrameBufferList int_frame_buffers;
+} BufferPool;
+
+typedef struct VP10Common {
+  struct vpx_internal_error_info error;
+  vpx_color_space_t color_space;
+  int color_range;
+  int width;
+  int height;
+  int render_width;
+  int render_height;
+  int last_width;
+  int last_height;
+
+  // TODO(jkoleszar): this implies chroma ss right now, but could vary per
+  // plane. Revisit as part of the future change to YV12_BUFFER_CONFIG to
+  // support additional planes.
+  int subsampling_x;
+  int subsampling_y;
+
+#if CONFIG_VP9_HIGHBITDEPTH
+  // Marks if we need to use 16bit frame buffers (1: yes, 0: no).
+  int use_highbitdepth;
+#endif
+#if CONFIG_CLPF
+  int clpf;
+#endif
+
+  YV12_BUFFER_CONFIG *frame_to_show;
+  RefCntBuffer *prev_frame;
+
+  // TODO(hkuang): Combine this with cur_buf in macroblockd.
+  RefCntBuffer *cur_frame;
+
+  int ref_frame_map[REF_FRAMES]; /* maps fb_idx to reference slot */
+
+  // Prepare ref_frame_map for the next frame.
+  // Only used in frame parallel decode.
+  int next_ref_frame_map[REF_FRAMES];
+
+  // TODO(jkoleszar): could expand active_ref_idx to 4, with 0 as intra, and
+  // roll new_fb_idx into it.
+
+  // Each Inter frame can reference INTER_REFS_PER_FRAME buffers
+  RefBuffer frame_refs[INTER_REFS_PER_FRAME];
+
+  int new_fb_idx;
+
+  FRAME_TYPE last_frame_type; /* last frame's frame type for motion search.*/
+#if CONFIG_EXT_REFS
+  // frame type of the frame before last frame
+  FRAME_TYPE last2_frame_type;
+  // TODO(zoeliu): To check whether last3_frame_type is still needed.
+  // frame type of the frame two frames before last frame
+  FRAME_TYPE last3_frame_type;
+#endif  // CONFIG_EXT_REFS
+  FRAME_TYPE frame_type;
+
+  int show_frame;
+  int last_show_frame;
+  int show_existing_frame;
+#if CONFIG_EXT_REFS
+  // Flag for a frame used as a reference - not written to the bitstream
+  int is_reference_frame;
+#endif  // CONFIG_EXT_REFS
+
+  // Flag signaling that the frame is encoded using only INTRA modes.
+  uint8_t intra_only;
+  uint8_t last_intra_only;
+
+  int allow_high_precision_mv;
+
+  int allow_screen_content_tools;
+
+  // Flag signaling which frame contexts should be reset to default values.
+  RESET_FRAME_CONTEXT_MODE reset_frame_context;
+
+  // MBs, mb_rows/cols is in 16-pixel units; mi_rows/cols is in
+  // MODE_INFO (8-pixel) units.
+  int MBs;
+  int mb_rows, mi_rows;
+  int mb_cols, mi_cols;
+  int mi_stride;
+
+  /* profile settings */
+  TX_MODE tx_mode;
+
+  int base_qindex;
+  int y_dc_delta_q;
+  int uv_dc_delta_q;
+  int uv_ac_delta_q;
+  int16_t y_dequant[MAX_SEGMENTS][2];
+  int16_t uv_dequant[MAX_SEGMENTS][2];
+
+#if CONFIG_AOM_QM
+  // Global quant matrix tables
+  qm_val_t *giqmatrix[NUM_QM_LEVELS][2][2][TX_SIZES];
+  qm_val_t *gqmatrix[NUM_QM_LEVELS][2][2][TX_SIZES];
+
+  // Local quant matrix tables for each frame
+  qm_val_t *y_iqmatrix[MAX_SEGMENTS][2][TX_SIZES];
+  qm_val_t *uv_iqmatrix[MAX_SEGMENTS][2][TX_SIZES];
+  // Encoder
+  qm_val_t *y_qmatrix[MAX_SEGMENTS][2][TX_SIZES];
+  qm_val_t *uv_qmatrix[MAX_SEGMENTS][2][TX_SIZES];
+
+  int using_qmatrix;
+  int min_qmlevel;
+  int max_qmlevel;
+#endif
+#if CONFIG_NEW_QUANT
+  dequant_val_type_nuq y_dequant_nuq[MAX_SEGMENTS][QUANT_PROFILES][COEF_BANDS];
+  dequant_val_type_nuq uv_dequant_nuq[MAX_SEGMENTS][QUANT_PROFILES][COEF_BANDS];
+#endif
+
+  /* We allocate a MODE_INFO struct for each macroblock, together with
+     an extra row on top and column on the left to simplify prediction. */
+  int mi_alloc_size;
+  MODE_INFO *mip; /* Base of allocated array */
+  MODE_INFO *mi;  /* Corresponds to upper left visible macroblock */
+
+  // TODO(agrange): Move prev_mi into encoder structure.
+  // prev_mip and prev_mi will only be allocated in encoder.
+  MODE_INFO *prev_mip; /* MODE_INFO array 'mip' from last decoded frame */
+  MODE_INFO *prev_mi;  /* 'mi' from last frame (points into prev_mip) */
+
+  // Separate mi functions between encoder and decoder.
+  int (*alloc_mi)(struct VP10Common *cm, int mi_size);
+  void (*free_mi)(struct VP10Common *cm);
+  void (*setup_mi)(struct VP10Common *cm);
+
+  // Grid of pointers to 8x8 MODE_INFO structs.  Any 8x8 not in the visible
+  // area will be NULL.
+  MODE_INFO **mi_grid_base;
+  MODE_INFO **mi_grid_visible;
+  MODE_INFO **prev_mi_grid_base;
+  MODE_INFO **prev_mi_grid_visible;
+
+  // Whether to use previous frame's motion vectors for prediction.
+  int use_prev_frame_mvs;
+
+  // Persistent mb segment id map used in prediction.
+  int seg_map_idx;
+  int prev_seg_map_idx;
+
+  uint8_t *seg_map_array[NUM_PING_PONG_BUFFERS];
+  uint8_t *last_frame_seg_map;
+  uint8_t *current_frame_seg_map;
+  int seg_map_alloc_size;
+
+  INTERP_FILTER interp_filter;
+
+  loop_filter_info_n lf_info;
+#if CONFIG_LOOP_RESTORATION
+  RestorationInfo rst_info;
+  RestorationInternal rst_internal;
+#endif  // CONFIG_LOOP_RESTORATION
+
+  // Flag signaling how frame contexts should be updated at the end of
+  // a frame decode
+  REFRESH_FRAME_CONTEXT_MODE refresh_frame_context;
+
+  int ref_frame_sign_bias[TOTAL_REFS_PER_FRAME]; /* Two state 0, 1 */
+
+  struct loopfilter lf;
+  struct segmentation seg;
+
+  int frame_parallel_decode;  // frame-based threading.
+
+// Context probabilities for reference frame prediction
+#if CONFIG_EXT_REFS
+  MV_REFERENCE_FRAME comp_fwd_ref[FWD_REFS];
+  MV_REFERENCE_FRAME comp_bwd_ref[BWD_REFS];
+#else
+  MV_REFERENCE_FRAME comp_fixed_ref;
+  MV_REFERENCE_FRAME comp_var_ref[COMP_REFS];
+#endif  // CONFIG_EXT_REFS
+  REFERENCE_MODE reference_mode;
+
+  FRAME_CONTEXT *fc;              /* this frame entropy */
+  FRAME_CONTEXT *frame_contexts;  // FRAME_CONTEXTS
+  unsigned int frame_context_idx; /* Context to use/update */
+  FRAME_COUNTS counts;
+
+#if CONFIG_ENTROPY
+  // The initial probabilities for a frame, before any subframe backward update,
+  // and after forward update.
+  vp10_coeff_probs_model starting_coef_probs[TX_SIZES][PLANE_TYPES];
+  // Number of subframe backward updates already done
+  uint8_t coef_probs_update_idx;
+  // Signal if the backward update is subframe or end-of-frame
+  uint8_t partial_prob_update;
+  // Frame level flag to turn on/off subframe backward update
+  uint8_t do_subframe_update;
+#endif  // CONFIG_ENTROPY
+
+  unsigned int current_video_frame;
+  BITSTREAM_PROFILE profile;
+
+  // VPX_BITS_8 in profile 0 or 1, VPX_BITS_10 or VPX_BITS_12 in profile 2 or 3.
+  vpx_bit_depth_t bit_depth;
+  vpx_bit_depth_t dequant_bit_depth;  // bit_depth of current dequantizer
+
+  int error_resilient_mode;
+
+#if !CONFIG_EXT_TILE
+  int log2_tile_cols, log2_tile_rows;
+#endif  // !CONFIG_EXT_TILE
+  int tile_cols, tile_rows;
+  int tile_width, tile_height;  // In MI units
+
+  int byte_alignment;
+  int skip_loop_filter;
+
+  // Private data associated with the frame buffer callbacks.
+  void *cb_priv;
+  vpx_get_frame_buffer_cb_fn_t get_fb_cb;
+  vpx_release_frame_buffer_cb_fn_t release_fb_cb;
+
+  // Handles memory for the codec.
+  InternalFrameBufferList int_frame_buffers;
+
+  // External BufferPool passed from outside.
+  BufferPool *buffer_pool;
+
+  PARTITION_CONTEXT *above_seg_context;
+  ENTROPY_CONTEXT *above_context[MAX_MB_PLANE];
+#if CONFIG_VAR_TX
+  TXFM_CONTEXT *above_txfm_context;
+  TXFM_CONTEXT left_txfm_context[MAX_MIB_SIZE];
+#endif
+  int above_context_alloc_cols;
+
+  // scratch memory for intraonly/keyframe forward updates from default tables
+  // - this is intentionally not placed in FRAME_CONTEXT since it's reset upon
+  // each keyframe and not used afterwards
+  vpx_prob kf_y_prob[INTRA_MODES][INTRA_MODES][INTRA_MODES - 1];
+#if CONFIG_GLOBAL_MOTION
+  Global_Motion_Params global_motion[TOTAL_REFS_PER_FRAME];
+#endif
+
+  BLOCK_SIZE sb_size;  // Size of the superblock used for this frame
+  int mib_size;        // Size of the superblock in units of MI blocks
+  int mib_size_log2;   // Log 2 of above.
+#if CONFIG_DERING
+  int dering_level;
+#endif
+} VP10_COMMON;
+
+// TODO(hkuang): Don't need to lock the whole pool after implementing atomic
+// frame reference count.
+static void lock_buffer_pool(BufferPool *const pool) {
+#if CONFIG_MULTITHREAD
+  pthread_mutex_lock(&pool->pool_mutex);
+#else
+  (void)pool;
+#endif
+}
+
+static void unlock_buffer_pool(BufferPool *const pool) {
+#if CONFIG_MULTITHREAD
+  pthread_mutex_unlock(&pool->pool_mutex);
+#else
+  (void)pool;
+#endif
+}
+
+static INLINE YV12_BUFFER_CONFIG *get_ref_frame(VP10_COMMON *cm, int index) {
+  if (index < 0 || index >= REF_FRAMES) return NULL;
+  if (cm->ref_frame_map[index] < 0) return NULL;
+  assert(cm->ref_frame_map[index] < FRAME_BUFFERS);
+  return &cm->buffer_pool->frame_bufs[cm->ref_frame_map[index]].buf;
+}
+
+static INLINE YV12_BUFFER_CONFIG *get_frame_new_buffer(
+    const VP10_COMMON *const cm) {
+  return &cm->buffer_pool->frame_bufs[cm->new_fb_idx].buf;
+}
+
+static INLINE int get_free_fb(VP10_COMMON *cm) {
+  RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs;
+  int i;
+
+  lock_buffer_pool(cm->buffer_pool);
+  for (i = 0; i < FRAME_BUFFERS; ++i)
+    if (frame_bufs[i].ref_count == 0) break;
+
+  if (i != FRAME_BUFFERS) {
+    frame_bufs[i].ref_count = 1;
+  } else {
+    // Reset i to be INVALID_IDX to indicate no free buffer found.
+    i = INVALID_IDX;
+  }
+
+  unlock_buffer_pool(cm->buffer_pool);
+  return i;
+}
+
+static INLINE void ref_cnt_fb(RefCntBuffer *bufs, int *idx, int new_idx) {
+  const int ref_index = *idx;
+
+  if (ref_index >= 0 && bufs[ref_index].ref_count > 0)
+    bufs[ref_index].ref_count--;
+
+  *idx = new_idx;
+
+  bufs[new_idx].ref_count++;
+}
+
+static INLINE int mi_cols_aligned_to_sb(const VP10_COMMON *cm) {
+  return ALIGN_POWER_OF_TWO(cm->mi_cols, cm->mib_size_log2);
+}
+
+static INLINE int mi_rows_aligned_to_sb(const VP10_COMMON *cm) {
+  return ALIGN_POWER_OF_TWO(cm->mi_rows, cm->mib_size_log2);
+}
+
+static INLINE int frame_is_intra_only(const VP10_COMMON *const cm) {
+  return cm->frame_type == KEY_FRAME || cm->intra_only;
+}
+
+static INLINE void vp10_init_macroblockd(VP10_COMMON *cm, MACROBLOCKD *xd,
+                                         tran_low_t *dqcoeff) {
+  int i;
+  for (i = 0; i < MAX_MB_PLANE; ++i) {
+    xd->plane[i].dqcoeff = dqcoeff;
+    xd->above_context[i] = cm->above_context[i];
+    if (xd->plane[i].plane_type == PLANE_TYPE_Y) {
+      memcpy(xd->plane[i].seg_dequant, cm->y_dequant, sizeof(cm->y_dequant));
+#if CONFIG_AOM_QM
+      memcpy(xd->plane[i].seg_iqmatrix, cm->y_iqmatrix, sizeof(cm->y_iqmatrix));
+#endif
+
+#if CONFIG_NEW_QUANT
+      memcpy(xd->plane[i].seg_dequant_nuq, cm->y_dequant_nuq,
+             sizeof(cm->y_dequant_nuq));
+#endif
+    } else {
+      memcpy(xd->plane[i].seg_dequant, cm->uv_dequant, sizeof(cm->uv_dequant));
+#if CONFIG_AOM_QM
+      memcpy(xd->plane[i].seg_iqmatrix, cm->uv_iqmatrix,
+             sizeof(cm->uv_iqmatrix));
+#endif
+#if CONFIG_NEW_QUANT
+      memcpy(xd->plane[i].seg_dequant_nuq, cm->uv_dequant_nuq,
+             sizeof(cm->uv_dequant_nuq));
+#endif
+    }
+    xd->fc = cm->fc;
+  }
+
+  xd->above_seg_context = cm->above_seg_context;
+#if CONFIG_VAR_TX
+  xd->above_txfm_context = cm->above_txfm_context;
+#endif
+  xd->mi_stride = cm->mi_stride;
+  xd->error_info = &cm->error;
+}
+
+static INLINE void set_skip_context(MACROBLOCKD *xd, int mi_row, int mi_col) {
+  const int above_idx = mi_col * 2;
+  const int left_idx = (mi_row * 2) & MAX_MIB_MASK_2;
+  int i;
+  for (i = 0; i < MAX_MB_PLANE; ++i) {
+    struct macroblockd_plane *const pd = &xd->plane[i];
+    pd->above_context = &xd->above_context[i][above_idx >> pd->subsampling_x];
+    pd->left_context = &xd->left_context[i][left_idx >> pd->subsampling_y];
+  }
+}
+
+static INLINE int calc_mi_size(int len) {
+  // len is in mi units.
+  return len + MAX_MIB_SIZE;
+}
+
+static INLINE void set_mi_row_col(MACROBLOCKD *xd, const TileInfo *const tile,
+                                  int mi_row, int bh, int mi_col, int bw,
+                                  int mi_rows, int mi_cols) {
+  xd->mb_to_top_edge = -((mi_row * MI_SIZE) * 8);
+  xd->mb_to_bottom_edge = ((mi_rows - bh - mi_row) * MI_SIZE) * 8;
+  xd->mb_to_left_edge = -((mi_col * MI_SIZE) * 8);
+  xd->mb_to_right_edge = ((mi_cols - bw - mi_col) * MI_SIZE) * 8;
+
+  // Are edges available for intra prediction?
+  xd->up_available = (mi_row > tile->mi_row_start);
+  xd->left_available = (mi_col > tile->mi_col_start);
+  if (xd->up_available) {
+    xd->above_mi = xd->mi[-xd->mi_stride];
+    // above_mi may be NULL in encoder's first pass.
+    xd->above_mbmi = xd->above_mi ? &xd->above_mi->mbmi : NULL;
+  } else {
+    xd->above_mi = NULL;
+    xd->above_mbmi = NULL;
+  }
+
+  if (xd->left_available) {
+    xd->left_mi = xd->mi[-1];
+    // left_mi may be NULL in encoder's first pass.
+    xd->left_mbmi = xd->left_mi ? &xd->left_mi->mbmi : NULL;
+  } else {
+    xd->left_mi = NULL;
+    xd->left_mbmi = NULL;
+  }
+
+  xd->n8_h = bh;
+  xd->n8_w = bw;
+#if CONFIG_REF_MV
+  xd->is_sec_rect = 0;
+  if (xd->n8_w < xd->n8_h)
+    if (mi_col & (xd->n8_h - 1)) xd->is_sec_rect = 1;
+
+  if (xd->n8_w > xd->n8_h)
+    if (mi_row & (xd->n8_w - 1)) xd->is_sec_rect = 1;
+#endif
+}
+
+static INLINE const vpx_prob *get_y_mode_probs(const VP10_COMMON *cm,
+                                               const MODE_INFO *mi,
+                                               const MODE_INFO *above_mi,
+                                               const MODE_INFO *left_mi,
+                                               int block) {
+  const PREDICTION_MODE above = vp10_above_block_mode(mi, above_mi, block);
+  const PREDICTION_MODE left = vp10_left_block_mode(mi, left_mi, block);
+  return cm->kf_y_prob[above][left];
+}
+
+static INLINE void update_partition_context(MACROBLOCKD *xd, int mi_row,
+                                            int mi_col, BLOCK_SIZE subsize,
+                                            BLOCK_SIZE bsize) {
+  PARTITION_CONTEXT *const above_ctx = xd->above_seg_context + mi_col;
+  PARTITION_CONTEXT *const left_ctx =
+      xd->left_seg_context + (mi_row & MAX_MIB_MASK);
+
+#if CONFIG_EXT_PARTITION_TYPES
+  const int bw = num_8x8_blocks_wide_lookup[bsize];
+  const int bh = num_8x8_blocks_high_lookup[bsize];
+  memset(above_ctx, partition_context_lookup[subsize].above, bw);
+  memset(left_ctx, partition_context_lookup[subsize].left, bh);
+#else
+  // num_4x4_blocks_wide_lookup[bsize] / 2
+  const int bs = num_8x8_blocks_wide_lookup[bsize];
+
+  // update the partition context at the end notes. set partition bits
+  // of block sizes larger than the current one to be one, and partition
+  // bits of smaller block sizes to be zero.
+  memset(above_ctx, partition_context_lookup[subsize].above, bs);
+  memset(left_ctx, partition_context_lookup[subsize].left, bs);
+#endif  // CONFIG_EXT_PARTITION_TYPES
+}
+
+#if CONFIG_EXT_PARTITION_TYPES
+static INLINE void update_ext_partition_context(MACROBLOCKD *xd, int mi_row,
+                                                int mi_col, BLOCK_SIZE subsize,
+                                                BLOCK_SIZE bsize,
+                                                PARTITION_TYPE partition) {
+  if (bsize >= BLOCK_8X8) {
+    const int bsl = b_width_log2_lookup[bsize], hbs = (1 << bsl) / 4;
+    BLOCK_SIZE bsize2 = get_subsize(bsize, PARTITION_SPLIT);
+    switch (partition) {
+      case PARTITION_SPLIT:
+        if (bsize != BLOCK_8X8) break;
+      case PARTITION_NONE:
+      case PARTITION_HORZ:
+      case PARTITION_VERT:
+        update_partition_context(xd, mi_row, mi_col, subsize, bsize);
+        break;
+      case PARTITION_HORZ_A:
+        update_partition_context(xd, mi_row, mi_col, bsize2, subsize);
+        update_partition_context(xd, mi_row + hbs, mi_col, subsize, subsize);
+        break;
+      case PARTITION_HORZ_B:
+        update_partition_context(xd, mi_row, mi_col, subsize, subsize);
+        update_partition_context(xd, mi_row + hbs, mi_col, bsize2, subsize);
+        break;
+      case PARTITION_VERT_A:
+        update_partition_context(xd, mi_row, mi_col, bsize2, subsize);
+        update_partition_context(xd, mi_row, mi_col + hbs, subsize, subsize);
+        break;
+      case PARTITION_VERT_B:
+        update_partition_context(xd, mi_row, mi_col, subsize, subsize);
+        update_partition_context(xd, mi_row, mi_col + hbs, bsize2, subsize);
+        break;
+      default: assert(0 && "Invalid partition type");
+    }
+  }
+}
+#endif  // CONFIG_EXT_PARTITION_TYPES
+
+static INLINE int partition_plane_context(const MACROBLOCKD *xd, int mi_row,
+                                          int mi_col, BLOCK_SIZE bsize) {
+  const PARTITION_CONTEXT *above_ctx = xd->above_seg_context + mi_col;
+  const PARTITION_CONTEXT *left_ctx =
+      xd->left_seg_context + (mi_row & MAX_MIB_MASK);
+  const int bsl = mi_width_log2_lookup[bsize];
+  int above = (*above_ctx >> bsl) & 1, left = (*left_ctx >> bsl) & 1;
+
+  assert(b_width_log2_lookup[bsize] == b_height_log2_lookup[bsize]);
+  assert(bsl >= 0);
+
+  return (left * 2 + above) + bsl * PARTITION_PLOFFSET;
+}
+
+static INLINE void vp10_zero_above_context(VP10_COMMON *const cm,
+                                           int mi_col_start, int mi_col_end) {
+  const int width = mi_col_end - mi_col_start;
+
+  const int offset_y = 2 * mi_col_start;
+  const int width_y = 2 * width;
+  const int offset_uv = offset_y >> cm->subsampling_x;
+  const int width_uv = width_y >> cm->subsampling_x;
+
+  vp10_zero_array(cm->above_context[0] + offset_y, width_y);
+  vp10_zero_array(cm->above_context[1] + offset_uv, width_uv);
+  vp10_zero_array(cm->above_context[2] + offset_uv, width_uv);
+
+  vp10_zero_array(cm->above_seg_context + mi_col_start, width);
+
+#if CONFIG_VAR_TX
+  vp10_zero_array(cm->above_txfm_context + mi_col_start, width);
+#endif  // CONFIG_VAR_TX
+}
+
+static INLINE void vp10_zero_left_context(MACROBLOCKD *const xd) {
+  vp10_zero(xd->left_context);
+  vp10_zero(xd->left_seg_context);
+#if CONFIG_VAR_TX
+  vp10_zero(xd->left_txfm_context_buffer);
+#endif
+}
+
+#if CONFIG_VAR_TX
+static INLINE void set_txfm_ctx(TXFM_CONTEXT *txfm_ctx, TX_SIZE tx_size,
+                                int len) {
+  int i;
+  for (i = 0; i < len; ++i) txfm_ctx[i] = tx_size;
+}
+
+static INLINE void set_txfm_ctxs(TX_SIZE tx_size, int n8_w, int n8_h,
+                                 const MACROBLOCKD *xd) {
+  set_txfm_ctx(xd->above_txfm_context, txsize_horz_map[tx_size], n8_w);
+  set_txfm_ctx(xd->left_txfm_context, txsize_vert_map[tx_size], n8_h);
+}
+
+static INLINE void txfm_partition_update(TXFM_CONTEXT *above_ctx,
+                                         TXFM_CONTEXT *left_ctx,
+                                         TX_SIZE tx_size) {
+  BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
+  int bs = num_8x8_blocks_high_lookup[bsize];
+  int i;
+  for (i = 0; i < bs; ++i) {
+    above_ctx[i] = tx_size;
+    left_ctx[i] = tx_size;
+  }
+}
+
+static INLINE int txfm_partition_context(TXFM_CONTEXT *above_ctx,
+                                         TXFM_CONTEXT *left_ctx,
+                                         TX_SIZE tx_size) {
+  int above = *above_ctx < tx_size;
+  int left = *left_ctx < tx_size;
+  return (tx_size - 1) * 3 + above + left;
+}
+#endif
+
+static INLINE PARTITION_TYPE get_partition(const VP10_COMMON *const cm,
+                                           const int mi_row, const int mi_col,
+                                           const BLOCK_SIZE bsize) {
+  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) {
+    return PARTITION_INVALID;
+  } else {
+    const int offset = mi_row * cm->mi_stride + mi_col;
+    MODE_INFO **mi = cm->mi_grid_visible + offset;
+    const MB_MODE_INFO *const mbmi = &mi[0]->mbmi;
+    const int bsl = b_width_log2_lookup[bsize];
+    const PARTITION_TYPE partition = partition_lookup[bsl][mbmi->sb_type];
+#if !CONFIG_EXT_PARTITION_TYPES
+    return partition;
+#else
+    const int hbs = num_8x8_blocks_wide_lookup[bsize] / 2;
+
+    assert(cm->mi_grid_visible[offset] == &cm->mi[offset]);
+
+    if (partition != PARTITION_NONE && bsize > BLOCK_8X8 &&
+        mi_row + hbs < cm->mi_rows && mi_col + hbs < cm->mi_cols) {
+      const BLOCK_SIZE h = get_subsize(bsize, PARTITION_HORZ_A);
+      const BLOCK_SIZE v = get_subsize(bsize, PARTITION_VERT_A);
+      const MB_MODE_INFO *const mbmi_right = &mi[hbs]->mbmi;
+      const MB_MODE_INFO *const mbmi_below = &mi[hbs * cm->mi_stride]->mbmi;
+      if (mbmi->sb_type == h) {
+        return mbmi_below->sb_type == h ? PARTITION_HORZ : PARTITION_HORZ_B;
+      } else if (mbmi->sb_type == v) {
+        return mbmi_right->sb_type == v ? PARTITION_VERT : PARTITION_VERT_B;
+      } else if (mbmi_below->sb_type == h) {
+        return PARTITION_HORZ_A;
+      } else if (mbmi_right->sb_type == v) {
+        return PARTITION_VERT_A;
+      } else {
+        return PARTITION_SPLIT;
+      }
+    }
+
+    return partition;
+#endif  // !CONFIG_EXT_PARTITION_TYPES
+  }
+}
+
+static INLINE void set_sb_size(VP10_COMMON *const cm,
+                               const BLOCK_SIZE sb_size) {
+  cm->sb_size = sb_size;
+  cm->mib_size = num_8x8_blocks_wide_lookup[cm->sb_size];
+  cm->mib_size_log2 = mi_width_log2_lookup[cm->sb_size];
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP10_COMMON_ONYXC_INT_H_