av1/common/alloccommon.c - avm - Git at Google

 /*
  *
  * Copyright (c) 2021, Alliance for Open Media. All rights reserved
  *
  * This source code is subject to the terms of the BSD 3-Clause Clear License
  * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
  * License was not distributed with this source code in the LICENSE file, you
  * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/.  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
  * aomedia.org/license/patent-license/.
  */

 #include "config/aom_config.h"

 #include "aom_mem/aom_mem.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/entropymv.h"

 int av1_get_MBs(int width, int height) {
   const int aligned_width = ALIGN_POWER_OF_TWO(width, 3);
   const int aligned_height = ALIGN_POWER_OF_TWO(height, 3);
   const int mi_cols = aligned_width >> MI_SIZE_LOG2;
   const int mi_rows = aligned_height >> MI_SIZE_LOG2;

   const int mb_cols = (mi_cols + 2) >> 2;
   const int mb_rows = (mi_rows + 2) >> 2;
   return mb_rows * mb_cols;
 }

 void av1_free_ref_frame_buffers(BufferPool *pool) {
   int i;

   for (i = 0; i < FRAME_BUFFERS; ++i) {
     if (pool->frame_bufs[i].ref_count > 0 &&
         pool->frame_bufs[i].raw_frame_buffer.data != NULL) {
       pool->release_fb_cb(pool->cb_priv, &pool->frame_bufs[i].raw_frame_buffer);
       pool->frame_bufs[i].raw_frame_buffer.data = NULL;
       pool->frame_bufs[i].raw_frame_buffer.size = 0;
       pool->frame_bufs[i].raw_frame_buffer.priv = NULL;
       pool->frame_bufs[i].ref_count = 0;
     }
     aom_free(pool->frame_bufs[i].mvs);
     pool->frame_bufs[i].mvs = NULL;
     aom_free(pool->frame_bufs[i].seg_map);
     pool->frame_bufs[i].seg_map = NULL;
     aom_free_frame_buffer(&pool->frame_bufs[i].buf);
   }
 }

 // Assumes cm->rst_info[p].restoration_unit_size is already initialized
 void av1_alloc_restoration_buffers(AV1_COMMON *cm) {
   const int num_planes = av1_num_planes(cm);
   for (int p = 0; p < num_planes; ++p)
     av1_alloc_restoration_struct(cm, &cm->rst_info[p], p > 0);

   if (cm->rst_tmpbuf == NULL) {
     CHECK_MEM_ERROR(cm, cm->rst_tmpbuf,
                     (int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE));
   }

   if (cm->rlbs == NULL) {
     CHECK_MEM_ERROR(cm, cm->rlbs, aom_malloc(sizeof(RestorationLineBuffers)));
   }

   // For striped loop restoration, we divide each row of tiles into "stripes",
   // of height 64 luma pixels but with an offset by RESTORATION_UNIT_OFFSET
   // luma pixels to match the output from CDEF. We will need to store 2 *
   // RESTORATION_CTX_VERT lines of data for each stripe, and also need to be
   // able to quickly answer the question "Where is the <n>'th stripe for tile
   // row <m>?" To make that efficient, we generate the rst_last_stripe array.
   int num_stripes = 0;
   for (int i = 0; i < cm->tiles.rows; ++i) {
     TileInfo tile_info;
     av1_tile_set_row(&tile_info, cm, i);
     const int mi_h = tile_info.mi_row_end - tile_info.mi_row_start;
     const int ext_h = RESTORATION_UNIT_OFFSET + (mi_h << MI_SIZE_LOG2);
     const int tile_stripes = (ext_h + 63) / 64;
     num_stripes += tile_stripes;
   }

   // Now we need to allocate enough space to store the line buffers for the
   // stripes
   const int frame_w = cm->superres_upscaled_width;

   for (int p = 0; p < num_planes; ++p) {
     const int is_uv = p > 0;
     const int ss_x = is_uv && cm->seq_params.subsampling_x;
     const int plane_w = ((frame_w + ss_x) >> ss_x) + 2 * RESTORATION_EXTRA_HORZ;
     const int stride = ALIGN_POWER_OF_TWO(plane_w, 5);
     const int buf_size = num_stripes * stride * RESTORATION_CTX_VERT << 1;
     RestorationStripeBoundaries *boundaries = &cm->rst_info[p].boundaries;

     if (buf_size != boundaries->stripe_boundary_size ||
         boundaries->stripe_boundary_above == NULL ||
         boundaries->stripe_boundary_below == NULL) {
       aom_free(boundaries->stripe_boundary_above);
       aom_free(boundaries->stripe_boundary_below);

       CHECK_MEM_ERROR(cm, boundaries->stripe_boundary_above,
                       aom_memalign(32, buf_size));
       CHECK_MEM_ERROR(cm, boundaries->stripe_boundary_below,
                       aom_memalign(32, buf_size));

       boundaries->stripe_boundary_size = buf_size;
     }
     boundaries->stripe_boundary_stride = stride;
   }
 }

 void av1_free_restoration_buffers(AV1_COMMON *cm) {
   int p;
   for (p = 0; p < MAX_MB_PLANE; ++p)
     av1_free_restoration_struct(&cm->rst_info[p]);
   aom_free(cm->rst_tmpbuf);
   cm->rst_tmpbuf = NULL;
   aom_free(cm->rlbs);
   cm->rlbs = NULL;
   for (p = 0; p < MAX_MB_PLANE; ++p) {
     RestorationStripeBoundaries *boundaries = &cm->rst_info[p].boundaries;
     aom_free(boundaries->stripe_boundary_above);
     aom_free(boundaries->stripe_boundary_below);
     boundaries->stripe_boundary_above = NULL;
     boundaries->stripe_boundary_below = NULL;
   }

   aom_free_frame_buffer(&cm->rst_frame);
 }

 void av1_free_above_context_buffers(CommonContexts *above_contexts) {
   int i;
   const int num_planes = above_contexts->num_planes;

   for (int tile_row = 0; tile_row < above_contexts->num_tile_rows; tile_row++) {
     for (i = 0; i < num_planes; i++) {
       aom_free(above_contexts->entropy[i][tile_row]);
       above_contexts->entropy[i][tile_row] = NULL;
       aom_free(above_contexts->partition[i][tile_row]);
       above_contexts->partition[i][tile_row] = NULL;
     }
     aom_free(above_contexts->txfm[tile_row]);
     above_contexts->txfm[tile_row] = NULL;
   }
   for (i = 0; i < num_planes; i++) {
     aom_free(above_contexts->entropy[i]);
     above_contexts->entropy[i] = NULL;
     aom_free(above_contexts->partition[i]);
     above_contexts->partition[i] = NULL;
   }
   aom_free(above_contexts->txfm);
   above_contexts->txfm = NULL;

   above_contexts->num_tile_rows = 0;
   above_contexts->num_mi_cols = 0;
   above_contexts->num_planes = 0;
 }

 static void free_sbi(CommonSBInfoParams *sbi_params) {
   for (int i = 0; i < sbi_params->sbi_alloc_size; ++i) {
     av1_free_ptree_recursive(sbi_params->sbi_grid_base[i].ptree_root[0]);
     av1_free_ptree_recursive(sbi_params->sbi_grid_base[i].ptree_root[1]);
   }

   aom_free(sbi_params->sbi_grid_base);
   sbi_params->sbi_grid_base = NULL;
   sbi_params->sbi_alloc_size = 0;
 }

 void av1_free_context_buffers(AV1_COMMON *cm) {
   cm->mi_params.free_mi(&cm->mi_params);
   free_sbi(&cm->sbi_params);

   av1_free_above_context_buffers(&cm->above_contexts);

 #if CONFIG_LPF_MASK
   av1_free_loop_filter_mask(cm);
 #endif
 }

 int av1_alloc_above_context_buffers(CommonContexts *above_contexts,
                                     int num_tile_rows, int num_mi_cols,
                                     int num_planes) {
   const int aligned_mi_cols =
       ALIGN_POWER_OF_TWO(num_mi_cols, MAX_MIB_SIZE_LOG2);

   // Allocate above context buffers
   above_contexts->num_tile_rows = num_tile_rows;
   above_contexts->num_mi_cols = aligned_mi_cols;
   above_contexts->num_planes = num_planes;
   for (int plane_idx = 0; plane_idx < num_planes; plane_idx++) {
     above_contexts->entropy[plane_idx] = (ENTROPY_CONTEXT **)aom_calloc(
         num_tile_rows, sizeof(above_contexts->entropy[0]));
     if (!above_contexts->entropy[plane_idx]) return 1;
     above_contexts->partition[plane_idx] = (PARTITION_CONTEXT **)aom_calloc(
         num_tile_rows, sizeof(above_contexts->partition[plane_idx]));
     if (!above_contexts->partition[plane_idx]) return 1;
   }

   above_contexts->txfm =
       (TXFM_CONTEXT **)aom_calloc(num_tile_rows, sizeof(above_contexts->txfm));
   if (!above_contexts->txfm) return 1;

   for (int tile_row = 0; tile_row < num_tile_rows; tile_row++) {
     for (int plane_idx = 0; plane_idx < num_planes; plane_idx++) {
       above_contexts->entropy[plane_idx][tile_row] =
           (ENTROPY_CONTEXT *)aom_calloc(
               aligned_mi_cols, sizeof(*above_contexts->entropy[0][tile_row]));
       if (!above_contexts->entropy[plane_idx][tile_row]) return 1;
       above_contexts->partition[plane_idx][tile_row] =
           (PARTITION_CONTEXT *)aom_calloc(
               aligned_mi_cols,
               sizeof(*above_contexts->partition[plane_idx][tile_row]));
       if (!above_contexts->partition[plane_idx][tile_row]) return 1;
     }
     above_contexts->txfm[tile_row] = (TXFM_CONTEXT *)aom_calloc(
         aligned_mi_cols, sizeof(*above_contexts->txfm[tile_row]));
     if (!above_contexts->txfm[tile_row]) return 1;
   }

   return 0;
 }

 // Allocate the dynamically allocated arrays in 'mi_params' assuming
 // 'mi_params->set_mb_mi()' was already called earlier to initialize the rest of
 // the struct members.
 static int alloc_mi(CommonModeInfoParams *mi_params
 #if CONFIG_PC_WIENER
                     ,
                     AV1_COMMON *cm
 #endif  // CONFIG_PC_WIENER
 ) {
   const int aligned_mi_rows = calc_mi_size(mi_params->mi_rows);
   const int mi_grid_size = mi_params->mi_stride * aligned_mi_rows;
   const int alloc_size_1d = mi_size_wide[mi_params->mi_alloc_bsize];
   const int alloc_mi_size =
       mi_params->mi_alloc_stride * (aligned_mi_rows / alloc_size_1d);

   if (mi_params->mi_alloc_size < alloc_mi_size ||
       mi_params->mi_grid_size < mi_grid_size) {
     mi_params->free_mi(mi_params);

     mi_params->mi_alloc =
         aom_calloc(alloc_mi_size, sizeof(*mi_params->mi_alloc));
     if (!mi_params->mi_alloc) return 1;
     mi_params->mi_alloc_size = alloc_mi_size;

     mi_params->mi_grid_base = (MB_MODE_INFO **)aom_calloc(
         mi_grid_size, sizeof(*mi_params->mi_grid_base));
     if (!mi_params->mi_grid_base) return 1;
     mi_params->mi_grid_size = mi_grid_size;
 #if CONFIG_PC_WIENER
     av1_alloc_txk_skip_array(mi_params, cm);
     av1_alloc_class_id_array(mi_params, cm);
 #endif  // CONFIG_PC_WIENER
 #if CONFIG_C071_SUBBLK_WARPMV
     mi_params->mi_alloc_sub =
         aom_calloc(alloc_mi_size, sizeof(*mi_params->mi_alloc_sub));
     if (!mi_params->mi_alloc_sub) return 1;
     mi_params->submi_grid_base = (SUBMB_INFO **)aom_calloc(
         mi_grid_size, sizeof(*mi_params->submi_grid_base));
     if (!mi_params->submi_grid_base) return 1;
 #endif  // CONFIG_C071_SUBBLK_WARPMV

     mi_params->tx_type_map =
         aom_calloc(mi_grid_size, sizeof(*mi_params->tx_type_map));
     if (!mi_params->tx_type_map) return 1;
 #if CONFIG_CROSS_CHROMA_TX
     mi_params->cctx_type_map =
         aom_calloc(mi_grid_size, sizeof(*mi_params->cctx_type_map));
     if (!mi_params->cctx_type_map) return 1;
 #endif  // CONFIG_CROSS_CHROMA_TX
   }

   return 0;
 }

 static void set_sb_si(AV1_COMMON *cm) {
   CommonSBInfoParams *const sbi_params = &cm->sbi_params;
   const int mib_size_log2 = cm->seq_params.mib_size_log2;
   sbi_params->sb_cols =
       ALIGN_POWER_OF_TWO(cm->mi_params.mi_cols, mib_size_log2) >> mib_size_log2;
   sbi_params->sb_rows =
       ALIGN_POWER_OF_TWO(cm->mi_params.mi_rows, mib_size_log2) >> mib_size_log2;
   sbi_params->sbi_stride = cm->mi_params.mi_stride >> mib_size_log2;
 }

 static int alloc_sbi(CommonSBInfoParams *sbi_params) {
   const int sbi_size =
       sbi_params->sbi_stride * calc_mi_size(sbi_params->sb_rows);

   if (sbi_params->sbi_alloc_size < sbi_size) {
     free_sbi(sbi_params);
     sbi_params->sbi_grid_base = aom_calloc(sbi_size, sizeof(SB_INFO));

     if (!sbi_params->sbi_grid_base) return 1;

     sbi_params->sbi_alloc_size = sbi_size;
     for (int i = 0; i < sbi_size; ++i) {
       sbi_params->sbi_grid_base[i].ptree_root[0] = NULL;
       sbi_params->sbi_grid_base[i].ptree_root[1] = NULL;
     }
   }

   return 0;
 }

 int av1_alloc_context_buffers(AV1_COMMON *cm, int width, int height) {
   CommonModeInfoParams *const mi_params = &cm->mi_params;
   mi_params->set_mb_mi(mi_params, width, height);
 #if CONFIG_PC_WIENER
   if (alloc_mi(mi_params, cm)) goto fail;
 #else
   if (alloc_mi(mi_params)) goto fail;
 #endif  // CONFIG_PC_WIENER
   CommonSBInfoParams *const sbi_params = &cm->sbi_params;
   set_sb_si(cm);
   if (alloc_sbi(sbi_params)) goto fail;

   return 0;

 fail:
   // clear the mi_* values to force a realloc on resync
   mi_params->set_mb_mi(mi_params, 0, 0);
   av1_free_context_buffers(cm);
   return 1;
 }

 void av1_remove_common(AV1_COMMON *cm) {
   av1_free_context_buffers(cm);

   aom_free(cm->fc);
   cm->fc = NULL;
   aom_free(cm->default_frame_context);
   cm->default_frame_context = NULL;
 }

 void av1_init_mi_buffers(CommonModeInfoParams *mi_params) {
   mi_params->setup_mi(mi_params);
 }

 #if CONFIG_LPF_MASK
 int av1_alloc_loop_filter_mask(AV1_COMMON *cm) {
   aom_free(cm->lf.lfm);
   cm->lf.lfm = NULL;

   // Each lfm holds bit masks for all the 4x4 blocks in a max
   // 64x64 (128x128 for ext_partitions) region.  The stride
   // and rows are rounded up / truncated to a multiple of 16
   // (32 for ext_partition).
   cm->lf.lfm_stride =
       (cm->mi_params.mi_cols + (MI_SIZE_64X64 - 1)) >> MIN_MIB_SIZE_LOG2;
   cm->lf.lfm_num =
       ((cm->mi_params.mi_rows + (MI_SIZE_64X64 - 1)) >> MIN_MIB_SIZE_LOG2) *
       cm->lf.lfm_stride;
   cm->lf.lfm =
       (LoopFilterMask *)aom_calloc(cm->lf.lfm_num, sizeof(*cm->lf.lfm));
   if (!cm->lf.lfm) return 1;

   unsigned int i;
   for (i = 0; i < cm->lf.lfm_num; ++i) av1_zero(cm->lf.lfm[i]);

   return 0;
 }

 void av1_free_loop_filter_mask(AV1_COMMON *cm) {
   if (cm->lf.lfm == NULL) return;

   aom_free(cm->lf.lfm);
   cm->lf.lfm = NULL;
   cm->lf.lfm_num = 0;
   cm->lf.lfm_stride = 0;
 }
 #endif
	/*
	*
	* Copyright (c) 2021, Alliance for Open Media. All rights reserved
	*
	* This source code is subject to the terms of the BSD 3-Clause Clear License
	* and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
	* License was not distributed with this source code in the LICENSE file, you
	* can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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
	* aomedia.org/license/patent-license/.
	*/

	#include "config/aom_config.h"

	#include "aom_mem/aom_mem.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/entropymv.h"

	int av1_get_MBs(int width, int height) {
	const int aligned_width = ALIGN_POWER_OF_TWO(width, 3);
	const int aligned_height = ALIGN_POWER_OF_TWO(height, 3);
	const int mi_cols = aligned_width >> MI_SIZE_LOG2;
	const int mi_rows = aligned_height >> MI_SIZE_LOG2;

	const int mb_cols = (mi_cols + 2) >> 2;
	const int mb_rows = (mi_rows + 2) >> 2;
	return mb_rows * mb_cols;
	}

	void av1_free_ref_frame_buffers(BufferPool *pool) {
	int i;

	for (i = 0; i < FRAME_BUFFERS; ++i) {
	if (pool->frame_bufs[i].ref_count > 0 &&
	pool->frame_bufs[i].raw_frame_buffer.data != NULL) {
	pool->release_fb_cb(pool->cb_priv, &pool->frame_bufs[i].raw_frame_buffer);
	pool->frame_bufs[i].raw_frame_buffer.data = NULL;
	pool->frame_bufs[i].raw_frame_buffer.size = 0;
	pool->frame_bufs[i].raw_frame_buffer.priv = NULL;
	pool->frame_bufs[i].ref_count = 0;
	}
	aom_free(pool->frame_bufs[i].mvs);
	pool->frame_bufs[i].mvs = NULL;
	aom_free(pool->frame_bufs[i].seg_map);
	pool->frame_bufs[i].seg_map = NULL;
	aom_free_frame_buffer(&pool->frame_bufs[i].buf);
	}
	}

	// Assumes cm->rst_info[p].restoration_unit_size is already initialized
	void av1_alloc_restoration_buffers(AV1_COMMON *cm) {
	const int num_planes = av1_num_planes(cm);
	for (int p = 0; p < num_planes; ++p)
	av1_alloc_restoration_struct(cm, &cm->rst_info[p], p > 0);

	if (cm->rst_tmpbuf == NULL) {
	CHECK_MEM_ERROR(cm, cm->rst_tmpbuf,
	(int32_t *)aom_memalign(16, RESTORATION_TMPBUF_SIZE));
	}

	if (cm->rlbs == NULL) {
	CHECK_MEM_ERROR(cm, cm->rlbs, aom_malloc(sizeof(RestorationLineBuffers)));
	}

	// For striped loop restoration, we divide each row of tiles into "stripes",
	// of height 64 luma pixels but with an offset by RESTORATION_UNIT_OFFSET
	// luma pixels to match the output from CDEF. We will need to store 2 *
	// RESTORATION_CTX_VERT lines of data for each stripe, and also need to be
	// able to quickly answer the question "Where is the <n>'th stripe for tile
	// row <m>?" To make that efficient, we generate the rst_last_stripe array.
	int num_stripes = 0;
	for (int i = 0; i < cm->tiles.rows; ++i) {
	TileInfo tile_info;
	av1_tile_set_row(&tile_info, cm, i);
	const int mi_h = tile_info.mi_row_end - tile_info.mi_row_start;
	const int ext_h = RESTORATION_UNIT_OFFSET + (mi_h << MI_SIZE_LOG2);
	const int tile_stripes = (ext_h + 63) / 64;
	num_stripes += tile_stripes;
	}

	// Now we need to allocate enough space to store the line buffers for the
	// stripes
	const int frame_w = cm->superres_upscaled_width;

	for (int p = 0; p < num_planes; ++p) {
	const int is_uv = p > 0;
	const int ss_x = is_uv && cm->seq_params.subsampling_x;
	const int plane_w = ((frame_w + ss_x) >> ss_x) + 2 * RESTORATION_EXTRA_HORZ;
	const int stride = ALIGN_POWER_OF_TWO(plane_w, 5);
	const int buf_size = num_stripes * stride * RESTORATION_CTX_VERT << 1;
	RestorationStripeBoundaries *boundaries = &cm->rst_info[p].boundaries;

	if (buf_size != boundaries->stripe_boundary_size \|\|
	boundaries->stripe_boundary_above == NULL \|\|
	boundaries->stripe_boundary_below == NULL) {
	aom_free(boundaries->stripe_boundary_above);
	aom_free(boundaries->stripe_boundary_below);

	CHECK_MEM_ERROR(cm, boundaries->stripe_boundary_above,
	aom_memalign(32, buf_size));
	CHECK_MEM_ERROR(cm, boundaries->stripe_boundary_below,
	aom_memalign(32, buf_size));

	boundaries->stripe_boundary_size = buf_size;
	}
	boundaries->stripe_boundary_stride = stride;
	}
	}

	void av1_free_restoration_buffers(AV1_COMMON *cm) {
	int p;
	for (p = 0; p < MAX_MB_PLANE; ++p)
	av1_free_restoration_struct(&cm->rst_info[p]);
	aom_free(cm->rst_tmpbuf);
	cm->rst_tmpbuf = NULL;
	aom_free(cm->rlbs);
	cm->rlbs = NULL;
	for (p = 0; p < MAX_MB_PLANE; ++p) {
	RestorationStripeBoundaries *boundaries = &cm->rst_info[p].boundaries;
	aom_free(boundaries->stripe_boundary_above);
	aom_free(boundaries->stripe_boundary_below);
	boundaries->stripe_boundary_above = NULL;
	boundaries->stripe_boundary_below = NULL;
	}

	aom_free_frame_buffer(&cm->rst_frame);
	}

	void av1_free_above_context_buffers(CommonContexts *above_contexts) {
	int i;
	const int num_planes = above_contexts->num_planes;

	for (int tile_row = 0; tile_row < above_contexts->num_tile_rows; tile_row++) {
	for (i = 0; i < num_planes; i++) {
	aom_free(above_contexts->entropy[i][tile_row]);
	above_contexts->entropy[i][tile_row] = NULL;
	aom_free(above_contexts->partition[i][tile_row]);
	above_contexts->partition[i][tile_row] = NULL;
	}
	aom_free(above_contexts->txfm[tile_row]);
	above_contexts->txfm[tile_row] = NULL;
	}
	for (i = 0; i < num_planes; i++) {
	aom_free(above_contexts->entropy[i]);
	above_contexts->entropy[i] = NULL;
	aom_free(above_contexts->partition[i]);
	above_contexts->partition[i] = NULL;
	}
	aom_free(above_contexts->txfm);
	above_contexts->txfm = NULL;

	above_contexts->num_tile_rows = 0;
	above_contexts->num_mi_cols = 0;
	above_contexts->num_planes = 0;
	}

	static void free_sbi(CommonSBInfoParams *sbi_params) {
	for (int i = 0; i < sbi_params->sbi_alloc_size; ++i) {
	av1_free_ptree_recursive(sbi_params->sbi_grid_base[i].ptree_root[0]);
	av1_free_ptree_recursive(sbi_params->sbi_grid_base[i].ptree_root[1]);
	}

	aom_free(sbi_params->sbi_grid_base);
	sbi_params->sbi_grid_base = NULL;
	sbi_params->sbi_alloc_size = 0;
	}

	void av1_free_context_buffers(AV1_COMMON *cm) {
	cm->mi_params.free_mi(&cm->mi_params);
	free_sbi(&cm->sbi_params);

	av1_free_above_context_buffers(&cm->above_contexts);

	#if CONFIG_LPF_MASK
	av1_free_loop_filter_mask(cm);
	#endif
	}

	int av1_alloc_above_context_buffers(CommonContexts *above_contexts,
	int num_tile_rows, int num_mi_cols,
	int num_planes) {
	const int aligned_mi_cols =
	ALIGN_POWER_OF_TWO(num_mi_cols, MAX_MIB_SIZE_LOG2);

	// Allocate above context buffers
	above_contexts->num_tile_rows = num_tile_rows;
	above_contexts->num_mi_cols = aligned_mi_cols;
	above_contexts->num_planes = num_planes;
	for (int plane_idx = 0; plane_idx < num_planes; plane_idx++) {
	above_contexts->entropy[plane_idx] = (ENTROPY_CONTEXT **)aom_calloc(
	num_tile_rows, sizeof(above_contexts->entropy[0]));
	if (!above_contexts->entropy[plane_idx]) return 1;
	above_contexts->partition[plane_idx] = (PARTITION_CONTEXT **)aom_calloc(
	num_tile_rows, sizeof(above_contexts->partition[plane_idx]));
	if (!above_contexts->partition[plane_idx]) return 1;
	}

	above_contexts->txfm =
	(TXFM_CONTEXT **)aom_calloc(num_tile_rows, sizeof(above_contexts->txfm));
	if (!above_contexts->txfm) return 1;

	for (int tile_row = 0; tile_row < num_tile_rows; tile_row++) {
	for (int plane_idx = 0; plane_idx < num_planes; plane_idx++) {
	above_contexts->entropy[plane_idx][tile_row] =
	(ENTROPY_CONTEXT *)aom_calloc(
	aligned_mi_cols, sizeof(*above_contexts->entropy[0][tile_row]));
	if (!above_contexts->entropy[plane_idx][tile_row]) return 1;
	above_contexts->partition[plane_idx][tile_row] =
	(PARTITION_CONTEXT *)aom_calloc(
	aligned_mi_cols,
	sizeof(*above_contexts->partition[plane_idx][tile_row]));
	if (!above_contexts->partition[plane_idx][tile_row]) return 1;
	}
	above_contexts->txfm[tile_row] = (TXFM_CONTEXT *)aom_calloc(
	aligned_mi_cols, sizeof(*above_contexts->txfm[tile_row]));
	if (!above_contexts->txfm[tile_row]) return 1;
	}

	return 0;
	}

	// Allocate the dynamically allocated arrays in 'mi_params' assuming
	// 'mi_params->set_mb_mi()' was already called earlier to initialize the rest of
	// the struct members.
	static int alloc_mi(CommonModeInfoParams *mi_params
	#if CONFIG_PC_WIENER
	,
	AV1_COMMON *cm
	#endif // CONFIG_PC_WIENER
	) {
	const int aligned_mi_rows = calc_mi_size(mi_params->mi_rows);
	const int mi_grid_size = mi_params->mi_stride * aligned_mi_rows;
	const int alloc_size_1d = mi_size_wide[mi_params->mi_alloc_bsize];
	const int alloc_mi_size =
	mi_params->mi_alloc_stride * (aligned_mi_rows / alloc_size_1d);

	if (mi_params->mi_alloc_size < alloc_mi_size \|\|
	mi_params->mi_grid_size < mi_grid_size) {
	mi_params->free_mi(mi_params);

	mi_params->mi_alloc =
	aom_calloc(alloc_mi_size, sizeof(*mi_params->mi_alloc));
	if (!mi_params->mi_alloc) return 1;
	mi_params->mi_alloc_size = alloc_mi_size;

	mi_params->mi_grid_base = (MB_MODE_INFO **)aom_calloc(
	mi_grid_size, sizeof(*mi_params->mi_grid_base));
	if (!mi_params->mi_grid_base) return 1;
	mi_params->mi_grid_size = mi_grid_size;
	#if CONFIG_PC_WIENER
	av1_alloc_txk_skip_array(mi_params, cm);
	av1_alloc_class_id_array(mi_params, cm);
	#endif // CONFIG_PC_WIENER
	#if CONFIG_C071_SUBBLK_WARPMV
	mi_params->mi_alloc_sub =
	aom_calloc(alloc_mi_size, sizeof(*mi_params->mi_alloc_sub));
	if (!mi_params->mi_alloc_sub) return 1;
	mi_params->submi_grid_base = (SUBMB_INFO **)aom_calloc(
	mi_grid_size, sizeof(*mi_params->submi_grid_base));
	if (!mi_params->submi_grid_base) return 1;
	#endif // CONFIG_C071_SUBBLK_WARPMV

	mi_params->tx_type_map =
	aom_calloc(mi_grid_size, sizeof(*mi_params->tx_type_map));
	if (!mi_params->tx_type_map) return 1;
	#if CONFIG_CROSS_CHROMA_TX
	mi_params->cctx_type_map =
	aom_calloc(mi_grid_size, sizeof(*mi_params->cctx_type_map));
	if (!mi_params->cctx_type_map) return 1;
	#endif // CONFIG_CROSS_CHROMA_TX
	}

	return 0;
	}

	static void set_sb_si(AV1_COMMON *cm) {
	CommonSBInfoParams *const sbi_params = &cm->sbi_params;
	const int mib_size_log2 = cm->seq_params.mib_size_log2;
	sbi_params->sb_cols =
	ALIGN_POWER_OF_TWO(cm->mi_params.mi_cols, mib_size_log2) >> mib_size_log2;
	sbi_params->sb_rows =
	ALIGN_POWER_OF_TWO(cm->mi_params.mi_rows, mib_size_log2) >> mib_size_log2;
	sbi_params->sbi_stride = cm->mi_params.mi_stride >> mib_size_log2;
	}

	static int alloc_sbi(CommonSBInfoParams *sbi_params) {
	const int sbi_size =
	sbi_params->sbi_stride * calc_mi_size(sbi_params->sb_rows);

	if (sbi_params->sbi_alloc_size < sbi_size) {
	free_sbi(sbi_params);
	sbi_params->sbi_grid_base = aom_calloc(sbi_size, sizeof(SB_INFO));

	if (!sbi_params->sbi_grid_base) return 1;

	sbi_params->sbi_alloc_size = sbi_size;
	for (int i = 0; i < sbi_size; ++i) {
	sbi_params->sbi_grid_base[i].ptree_root[0] = NULL;
	sbi_params->sbi_grid_base[i].ptree_root[1] = NULL;
	}
	}

	return 0;
	}

	int av1_alloc_context_buffers(AV1_COMMON *cm, int width, int height) {
	CommonModeInfoParams *const mi_params = &cm->mi_params;
	mi_params->set_mb_mi(mi_params, width, height);
	#if CONFIG_PC_WIENER
	if (alloc_mi(mi_params, cm)) goto fail;
	#else
	if (alloc_mi(mi_params)) goto fail;
	#endif // CONFIG_PC_WIENER
	CommonSBInfoParams *const sbi_params = &cm->sbi_params;
	set_sb_si(cm);
	if (alloc_sbi(sbi_params)) goto fail;

	return 0;

	fail:
	// clear the mi_* values to force a realloc on resync
	mi_params->set_mb_mi(mi_params, 0, 0);
	av1_free_context_buffers(cm);
	return 1;
	}

	void av1_remove_common(AV1_COMMON *cm) {
	av1_free_context_buffers(cm);

	aom_free(cm->fc);
	cm->fc = NULL;
	aom_free(cm->default_frame_context);
	cm->default_frame_context = NULL;
	}

	void av1_init_mi_buffers(CommonModeInfoParams *mi_params) {
	mi_params->setup_mi(mi_params);
	}

	#if CONFIG_LPF_MASK
	int av1_alloc_loop_filter_mask(AV1_COMMON *cm) {
	aom_free(cm->lf.lfm);
	cm->lf.lfm = NULL;

	// Each lfm holds bit masks for all the 4x4 blocks in a max
	// 64x64 (128x128 for ext_partitions) region. The stride
	// and rows are rounded up / truncated to a multiple of 16
	// (32 for ext_partition).
	cm->lf.lfm_stride =
	(cm->mi_params.mi_cols + (MI_SIZE_64X64 - 1)) >> MIN_MIB_SIZE_LOG2;
	cm->lf.lfm_num =
	((cm->mi_params.mi_rows + (MI_SIZE_64X64 - 1)) >> MIN_MIB_SIZE_LOG2) *
	cm->lf.lfm_stride;
	cm->lf.lfm =
	(LoopFilterMask )aom_calloc(cm->lf.lfm_num, sizeof(cm->lf.lfm));
	if (!cm->lf.lfm) return 1;

	unsigned int i;
	for (i = 0; i < cm->lf.lfm_num; ++i) av1_zero(cm->lf.lfm[i]);

	return 0;
	}

	void av1_free_loop_filter_mask(AV1_COMMON *cm) {
	if (cm->lf.lfm == NULL) return;

	aom_free(cm->lf.lfm);
	cm->lf.lfm = NULL;
	cm->lf.lfm_num = 0;
	cm->lf.lfm_stride = 0;
	}
	#endif