/*
 * Copyright (c) 2020, 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_ALLOC_H_
#define AOM_AV1_ENCODER_ENCODER_ALLOC_H_

#include "av1/encoder/encoder.h"
#include "av1/encoder/encodetxb.h"

#ifdef __cplusplus
extern "C" {
#endif

static AOM_INLINE void dealloc_context_buffers_ext(
    MBMIExtFrameBufferInfo *mbmi_ext_info) {
  if (mbmi_ext_info->frame_base) {
    aom_free(mbmi_ext_info->frame_base);
    mbmi_ext_info->frame_base = NULL;
    mbmi_ext_info->alloc_size = 0;
  }
}

static AOM_INLINE void alloc_context_buffers_ext(
    AV1_COMMON *cm, MBMIExtFrameBufferInfo *mbmi_ext_info) {
  const CommonModeInfoParams *const mi_params = &cm->mi_params;

  const int mi_alloc_size_1d = mi_size_wide[mi_params->mi_alloc_bsize];
  const int mi_alloc_rows =
      (mi_params->mi_rows + mi_alloc_size_1d - 1) / mi_alloc_size_1d;
  const int mi_alloc_cols =
      (mi_params->mi_cols + mi_alloc_size_1d - 1) / mi_alloc_size_1d;
  const int new_ext_mi_size = mi_alloc_rows * mi_alloc_cols;

  if (new_ext_mi_size > mbmi_ext_info->alloc_size) {
    dealloc_context_buffers_ext(mbmi_ext_info);
    CHECK_MEM_ERROR(
        cm, mbmi_ext_info->frame_base,
        aom_calloc(new_ext_mi_size, sizeof(*mbmi_ext_info->frame_base)));
    mbmi_ext_info->alloc_size = new_ext_mi_size;
  }
  // The stride needs to be updated regardless of whether new allocation
  // happened or not.
  mbmi_ext_info->stride = mi_alloc_cols;
}

static AOM_INLINE void alloc_compressor_data(AV1_COMP *cpi) {
  AV1_COMMON *cm = &cpi->common;
  TokenInfo *token_info = &cpi->token_info;

  if (av1_alloc_context_buffers(cm, cm->width, cm->height)) {
    aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                       "Failed to allocate context buffers");
  }

  if (!is_stat_generation_stage(cpi)) {
    av1_alloc_txb_buf(cpi);

    alloc_context_buffers_ext(cm, &cpi->mbmi_ext_info);
  }

  free_token_info(token_info);

  if (!is_stat_generation_stage(cpi)) {
    alloc_token_info(cm, token_info);
  }
  if (cpi->td.mb.mv_costs) {
    aom_free(cpi->td.mb.mv_costs);
    cpi->td.mb.mv_costs = NULL;
  }
  CHECK_MEM_ERROR(cm, cpi->td.mb.mv_costs,
                  (MvCosts *)aom_calloc(1, sizeof(MvCosts)));

  av1_setup_shared_coeff_buffer(&cpi->common, &cpi->td.shared_coeff_buf);
  av1_setup_sms_tree(cpi, &cpi->td);
  cpi->td.firstpass_ctx =
      av1_alloc_pmc(cpi, BLOCK_16X16, &cpi->td.shared_coeff_buf);
}

static AOM_INLINE void realloc_segmentation_maps(AV1_COMP *cpi) {
  AV1_COMMON *const cm = &cpi->common;
  CommonModeInfoParams *const mi_params = &cm->mi_params;

  // Create the encoder segmentation map and set all entries to 0
  aom_free(cpi->enc_seg.map);
  CHECK_MEM_ERROR(cm, cpi->enc_seg.map,
                  aom_calloc(mi_params->mi_rows * mi_params->mi_cols, 1));

  // Create a map used for cyclic background refresh.
  if (cpi->cyclic_refresh) av1_cyclic_refresh_free(cpi->cyclic_refresh);
  CHECK_MEM_ERROR(
      cm, cpi->cyclic_refresh,
      av1_cyclic_refresh_alloc(mi_params->mi_rows, mi_params->mi_cols));

  // Create a map used to mark inactive areas.
  aom_free(cpi->active_map.map);
  CHECK_MEM_ERROR(cm, cpi->active_map.map,
                  aom_calloc(mi_params->mi_rows * mi_params->mi_cols, 1));
}

static AOM_INLINE void set_tpl_stats_block_size(uint8_t *block_mis_log2,
                                                uint8_t *tpl_bsize_1d) {
  // tpl stats bsize: 2 means 16x16
  *block_mis_log2 = 2;
  // Block size used in tpl motion estimation
  *tpl_bsize_1d = 16;
  // MIN_TPL_BSIZE_1D = 16;
  assert(*tpl_bsize_1d >= 16);
}

static AOM_INLINE void setup_tpl_buffers(AV1_COMMON *const cm,
                                         TplParams *const tpl_data,
                                         int lag_in_frames) {
  CommonModeInfoParams *const mi_params = &cm->mi_params;
  set_tpl_stats_block_size(&tpl_data->tpl_stats_block_mis_log2,
                           &tpl_data->tpl_bsize_1d);
  const uint8_t block_mis_log2 = tpl_data->tpl_stats_block_mis_log2;
  tpl_data->border_in_pixels =
      ALIGN_POWER_OF_TWO(tpl_data->tpl_bsize_1d + 2 * AOM_INTERP_EXTEND, 5);

  for (int frame = 0; frame < MAX_LENGTH_TPL_FRAME_STATS; ++frame) {
    const int mi_cols =
        ALIGN_POWER_OF_TWO(mi_params->mi_cols, MAX_MIB_SIZE_LOG2);
    const int mi_rows =
        ALIGN_POWER_OF_TWO(mi_params->mi_rows, MAX_MIB_SIZE_LOG2);

    tpl_data->tpl_stats_buffer[frame].is_valid = 0;
    tpl_data->tpl_stats_buffer[frame].width = mi_cols >> block_mis_log2;
    tpl_data->tpl_stats_buffer[frame].height = mi_rows >> block_mis_log2;
    tpl_data->tpl_stats_buffer[frame].stride =
        tpl_data->tpl_stats_buffer[frame].width;
    tpl_data->tpl_stats_buffer[frame].mi_rows = mi_params->mi_rows;
    tpl_data->tpl_stats_buffer[frame].mi_cols = mi_params->mi_cols;
  }
  tpl_data->tpl_frame = &tpl_data->tpl_stats_buffer[REF_FRAMES + 1];

  // If lag_in_frames <= 1, TPL module is not invoked. Hence tpl recon and
  // stats buffers are not allocated.
  if (lag_in_frames <= 1) return;

  // TODO(aomedia:2873): Explore the allocation of tpl buffers based on
  // lag_in_frames.
  for (int frame = 0; frame < MAX_LAG_BUFFERS; ++frame) {
    CHECK_MEM_ERROR(
        cm, tpl_data->tpl_stats_pool[frame],
        aom_calloc(tpl_data->tpl_stats_buffer[frame].width *
                       tpl_data->tpl_stats_buffer[frame].height,
                   sizeof(*tpl_data->tpl_stats_buffer[frame].tpl_stats_ptr)));
    if (aom_alloc_frame_buffer(
            &tpl_data->tpl_rec_pool[frame], cm->width, cm->height,
            cm->seq_params.subsampling_x, cm->seq_params.subsampling_y,
            cm->seq_params.use_highbitdepth, tpl_data->border_in_pixels,
            cm->features.byte_alignment))
      aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                         "Failed to allocate frame buffer");
  }
}

static AOM_INLINE void alloc_obmc_buffers(OBMCBuffer *obmc_buffer,
                                          AV1_COMMON *cm) {
  CHECK_MEM_ERROR(
      cm, obmc_buffer->wsrc,
      (int32_t *)aom_memalign(16, MAX_SB_SQUARE * sizeof(*obmc_buffer->wsrc)));
  CHECK_MEM_ERROR(
      cm, obmc_buffer->mask,
      (int32_t *)aom_memalign(16, MAX_SB_SQUARE * sizeof(*obmc_buffer->mask)));
  CHECK_MEM_ERROR(
      cm, obmc_buffer->above_pred,
      (uint8_t *)aom_memalign(
          16, MAX_MB_PLANE * MAX_SB_SQUARE * sizeof(*obmc_buffer->above_pred)));
  CHECK_MEM_ERROR(
      cm, obmc_buffer->left_pred,
      (uint8_t *)aom_memalign(
          16, MAX_MB_PLANE * MAX_SB_SQUARE * sizeof(*obmc_buffer->left_pred)));
}

static AOM_INLINE void release_obmc_buffers(OBMCBuffer *obmc_buffer) {
  aom_free(obmc_buffer->mask);
  aom_free(obmc_buffer->above_pred);
  aom_free(obmc_buffer->left_pred);
  aom_free(obmc_buffer->wsrc);

  obmc_buffer->mask = NULL;
  obmc_buffer->above_pred = NULL;
  obmc_buffer->left_pred = NULL;
  obmc_buffer->wsrc = NULL;
}

static AOM_INLINE void alloc_compound_type_rd_buffers(
    AV1_COMMON *const cm, CompoundTypeRdBuffers *const bufs) {
  CHECK_MEM_ERROR(
      cm, bufs->pred0,
      (uint8_t *)aom_memalign(16, 2 * MAX_SB_SQUARE * sizeof(*bufs->pred0)));
  CHECK_MEM_ERROR(
      cm, bufs->pred1,
      (uint8_t *)aom_memalign(16, 2 * MAX_SB_SQUARE * sizeof(*bufs->pred1)));
  CHECK_MEM_ERROR(
      cm, bufs->residual1,
      (int16_t *)aom_memalign(32, MAX_SB_SQUARE * sizeof(*bufs->residual1)));
  CHECK_MEM_ERROR(
      cm, bufs->diff10,
      (int16_t *)aom_memalign(32, MAX_SB_SQUARE * sizeof(*bufs->diff10)));
  CHECK_MEM_ERROR(cm, bufs->tmp_best_mask_buf,
                  (uint8_t *)aom_malloc(2 * MAX_SB_SQUARE *
                                        sizeof(*bufs->tmp_best_mask_buf)));
}

static AOM_INLINE void release_compound_type_rd_buffers(
    CompoundTypeRdBuffers *const bufs) {
  aom_free(bufs->pred0);
  aom_free(bufs->pred1);
  aom_free(bufs->residual1);
  aom_free(bufs->diff10);
  aom_free(bufs->tmp_best_mask_buf);
  av1_zero(*bufs);  // Set all pointers to NULL for safety.
}

static AOM_INLINE void dealloc_compressor_data(AV1_COMP *cpi) {
  AV1_COMMON *const cm = &cpi->common;
  TokenInfo *token_info = &cpi->token_info;

  dealloc_context_buffers_ext(&cpi->mbmi_ext_info);

  aom_free(cpi->tile_data);
  cpi->tile_data = NULL;

  // Delete sementation map
  aom_free(cpi->enc_seg.map);
  cpi->enc_seg.map = NULL;

  av1_cyclic_refresh_free(cpi->cyclic_refresh);
  cpi->cyclic_refresh = NULL;

  aom_free(cpi->active_map.map);
  cpi->active_map.map = NULL;

  aom_free(cpi->ssim_rdmult_scaling_factors);
  cpi->ssim_rdmult_scaling_factors = NULL;

  aom_free(cpi->tpl_rdmult_scaling_factors);
  cpi->tpl_rdmult_scaling_factors = NULL;

  aom_free(cpi->tpl_sb_rdmult_scaling_factors);
  cpi->tpl_sb_rdmult_scaling_factors = NULL;

#if CONFIG_TUNE_VMAF
  aom_free(cpi->vmaf_info.rdmult_scaling_factors);
  cpi->vmaf_info.rdmult_scaling_factors = NULL;

#if CONFIG_USE_VMAF_RC
  aom_close_vmaf_model_rc(cpi->vmaf_info.vmaf_model);
#endif
#endif

  release_obmc_buffers(&cpi->td.mb.obmc_buffer);

  if (cpi->td.mb.mv_costs) {
    aom_free(cpi->td.mb.mv_costs);
    cpi->td.mb.mv_costs = NULL;
  }

  aom_free(cpi->td.mb.inter_modes_info);
  cpi->td.mb.inter_modes_info = NULL;

  for (int i = 0; i < 2; i++)
    for (int j = 0; j < 2; j++) {
      aom_free(cpi->td.mb.intrabc_hash_info.hash_value_buffer[i][j]);
      cpi->td.mb.intrabc_hash_info.hash_value_buffer[i][j] = NULL;
    }

  aom_free(cm->tpl_mvs);
  cm->tpl_mvs = NULL;

  if (cpi->td.vt64x64) {
    aom_free(cpi->td.vt64x64);
    cpi->td.vt64x64 = NULL;
  }

  av1_free_pmc(cpi->td.firstpass_ctx, av1_num_planes(cm));
  cpi->td.firstpass_ctx = NULL;

  av1_free_ref_frame_buffers(cm->buffer_pool);
  av1_free_txb_buf(cpi);
  av1_free_context_buffers(cm);

  aom_free_frame_buffer(&cpi->last_frame_uf);
#if !CONFIG_REALTIME_ONLY
  av1_free_restoration_buffers(cm);
#endif
  aom_free_frame_buffer(&cpi->trial_frame_rst);
  aom_free_frame_buffer(&cpi->scaled_source);
  aom_free_frame_buffer(&cpi->scaled_last_source);
  aom_free_frame_buffer(&cpi->alt_ref_buffer);
  av1_lookahead_destroy(cpi->lookahead);

  free_token_info(token_info);

  av1_free_shared_coeff_buffer(&cpi->td.shared_coeff_buf);
  av1_free_sms_tree(&cpi->td);

  aom_free(cpi->td.mb.palette_buffer);
  release_compound_type_rd_buffers(&cpi->td.mb.comp_rd_buffer);
  aom_free(cpi->td.mb.tmp_conv_dst);
  for (int j = 0; j < 2; ++j) {
    aom_free(cpi->td.mb.tmp_pred_bufs[j]);
  }

#if CONFIG_DENOISE
  if (cpi->denoise_and_model) {
    aom_denoise_and_model_free(cpi->denoise_and_model);
    cpi->denoise_and_model = NULL;
  }
#endif
  if (cpi->film_grain_table) {
    aom_film_grain_table_free(cpi->film_grain_table);
    cpi->film_grain_table = NULL;
  }

  for (int i = 0; i < MAX_NUM_OPERATING_POINTS; ++i) {
    aom_free(cpi->level_params.level_info[i]);
  }

  if (cpi->use_svc) av1_free_svc_cyclic_refresh(cpi);

  if (cpi->consec_zero_mv) {
    aom_free(cpi->consec_zero_mv);
    cpi->consec_zero_mv = NULL;
  }
}

static AOM_INLINE void variance_partition_alloc(AV1_COMP *cpi) {
  AV1_COMMON *const cm = &cpi->common;
  const int num_64x64_blocks = (cm->seq_params.sb_size == BLOCK_64X64) ? 1 : 4;
  if (cpi->td.vt64x64) {
    if (num_64x64_blocks != cpi->td.num_64x64_blocks) {
      aom_free(cpi->td.vt64x64);
      cpi->td.vt64x64 = NULL;
    }
  }
  if (!cpi->td.vt64x64) {
    CHECK_MEM_ERROR(cm, cpi->td.vt64x64,
                    aom_malloc(sizeof(*cpi->td.vt64x64) * num_64x64_blocks));
    cpi->td.num_64x64_blocks = num_64x64_blocks;
  }
}

static AOM_INLINE void alloc_altref_frame_buffer(AV1_COMP *cpi) {
  AV1_COMMON *cm = &cpi->common;
  const SequenceHeader *const seq_params = &cm->seq_params;
  const AV1EncoderConfig *oxcf = &cpi->oxcf;

  // When lag_in_frames <= 1, alt-ref frames are not enabled. In this case,
  // temporal filtering of key frames is disabled as well. Hence alt_ref_buffer
  // allocation is avoided.
  if (oxcf->gf_cfg.lag_in_frames <= 1) return;

  // TODO(agrange) Check if ARF is enabled and skip allocation if not.
  if (aom_realloc_frame_buffer(
          &cpi->alt_ref_buffer, oxcf->frm_dim_cfg.width,
          oxcf->frm_dim_cfg.height, seq_params->subsampling_x,
          seq_params->subsampling_y, seq_params->use_highbitdepth,
          cpi->oxcf.border_in_pixels, cm->features.byte_alignment, NULL, NULL,
          NULL))
    aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                       "Failed to allocate altref buffer");
}

static AOM_INLINE void alloc_util_frame_buffers(AV1_COMP *cpi) {
  AV1_COMMON *const cm = &cpi->common;
  const SequenceHeader *const seq_params = &cm->seq_params;
  const int byte_alignment = cm->features.byte_alignment;
  if (aom_realloc_frame_buffer(
          &cpi->last_frame_uf, cm->width, cm->height, seq_params->subsampling_x,
          seq_params->subsampling_y, seq_params->use_highbitdepth,
          cpi->oxcf.border_in_pixels, byte_alignment, NULL, NULL, NULL))
    aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                       "Failed to allocate last frame buffer");

  // The frame buffer trial_frame_rst is used during loop restoration filter
  // search. Hence it is allocated only when loop restoration is used.
  const int use_restoration = cm->seq_params.enable_restoration &&
                              !cm->features.all_lossless &&
                              !cm->tiles.large_scale;
  if (use_restoration) {
    if (aom_realloc_frame_buffer(
            &cpi->trial_frame_rst, cm->superres_upscaled_width,
            cm->superres_upscaled_height, seq_params->subsampling_x,
            seq_params->subsampling_y, seq_params->use_highbitdepth,
            AOM_RESTORATION_FRAME_BORDER, byte_alignment, NULL, NULL, NULL))
      aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                         "Failed to allocate trial restored frame buffer");
  }

  if (aom_realloc_frame_buffer(
          &cpi->scaled_source, cm->width, cm->height, seq_params->subsampling_x,
          seq_params->subsampling_y, seq_params->use_highbitdepth,
          cpi->oxcf.border_in_pixels, byte_alignment, NULL, NULL, NULL))
    aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                       "Failed to allocate scaled source buffer");

  if (aom_realloc_frame_buffer(
          &cpi->scaled_last_source, cm->width, cm->height,
          seq_params->subsampling_x, seq_params->subsampling_y,
          seq_params->use_highbitdepth, cpi->oxcf.border_in_pixels,
          byte_alignment, NULL, NULL, NULL))
    aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                       "Failed to allocate scaled last source buffer");
}

static AOM_INLINE YV12_BUFFER_CONFIG *realloc_and_scale_source(
    AV1_COMP *cpi, int scaled_width, int scaled_height) {
  AV1_COMMON *cm = &cpi->common;
  const int num_planes = av1_num_planes(cm);

  if (scaled_width == cpi->unscaled_source->y_crop_width &&
      scaled_height == cpi->unscaled_source->y_crop_height) {
    return cpi->unscaled_source;
  }

  if (aom_realloc_frame_buffer(
          &cpi->scaled_source, scaled_width, scaled_height,
          cm->seq_params.subsampling_x, cm->seq_params.subsampling_y,
          cm->seq_params.use_highbitdepth, AOM_BORDER_IN_PIXELS,
          cm->features.byte_alignment, NULL, NULL, NULL))
    aom_internal_error(&cm->error, AOM_CODEC_MEM_ERROR,
                       "Failed to reallocate scaled source buffer");
  assert(cpi->scaled_source.y_crop_width == scaled_width);
  assert(cpi->scaled_source.y_crop_height == scaled_height);
  av1_resize_and_extend_frame_nonnormative(
      cpi->unscaled_source, &cpi->scaled_source, (int)cm->seq_params.bit_depth,
      num_planes);
  return &cpi->scaled_source;
}

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

#endif  // AOM_AV1_ENCODER_ENCODER_ALLOC_H_