/*****************************************************************************
 * This file is part of Kvazaar HEVC encoder.
 *
 * Copyright (C) 2013-2015 Tampere University of Technology and others (see
 * COPYING file).
 *
 * Kvazaar is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 *
 * Kvazaar is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with Kvazaar.  If not, see <http://www.gnu.org/licenses/>.
 ****************************************************************************/

#include "videoframe.h"

#include <stdlib.h>

#include "image.h"
#include "sao.h"


/**
 * \brief Allocate new frame
 * \param pic picture pointer
 * \return picture pointer
 */
videoframe_t *kvz_videoframe_alloc(const int32_t width, const int32_t height, const int32_t poc) {
  videoframe_t *frame = MALLOC(videoframe_t, 1);

  if (!frame) return 0;

  FILL(*frame, 0);

  frame->width  = width;
  frame->height = height;
  frame->width_in_lcu  = frame->width / LCU_WIDTH;
  if (frame->width_in_lcu * LCU_WIDTH < frame->width) frame->width_in_lcu++;
  frame->height_in_lcu = frame->height / LCU_WIDTH;
  if (frame->height_in_lcu * LCU_WIDTH < frame->height) frame->height_in_lcu++;

  {
    // Allocate height_in_scu x width_in_scu x sizeof(CU_info)
    unsigned height_in_scu = frame->height_in_lcu << MAX_DEPTH;
    unsigned width_in_scu = frame->width_in_lcu << MAX_DEPTH;
    frame->cu_array = kvz_cu_array_alloc(width_in_scu, height_in_scu);
  }

  frame->coeff_y = NULL; frame->coeff_u = NULL; frame->coeff_v = NULL;

  frame->sao_luma = MALLOC(sao_info_t, frame->width_in_lcu * frame->height_in_lcu);
  frame->sao_chroma = MALLOC(sao_info_t, frame->width_in_lcu * frame->height_in_lcu);

  return frame;
}

/**
 * \brief Free memory allocated to frame
 * \param pic picture pointer
 * \return 1 on success, 0 on failure
 */
int kvz_videoframe_free(videoframe_t * const frame)
{
  kvz_image_free(frame->source);
  frame->source = NULL;
  kvz_image_free(frame->rec);
  frame->rec = NULL;

  kvz_cu_array_free(frame->cu_array);

  FREE_POINTER(frame->coeff_y);
  FREE_POINTER(frame->coeff_u);
  FREE_POINTER(frame->coeff_v);

  FREE_POINTER(frame->sao_luma);
  FREE_POINTER(frame->sao_chroma);

  free(frame);

  return 1;
}

void kvz_videoframe_set_poc(videoframe_t * const frame, const int32_t poc) {
  frame->poc = poc;
}

const cu_info_t* kvz_videoframe_get_cu_const(const videoframe_t * const frame, unsigned int x_in_scu, unsigned int y_in_scu)
{
  assert(x_in_scu < (frame->width_in_lcu << MAX_DEPTH));
  assert(y_in_scu < (frame->height_in_lcu << MAX_DEPTH));
  
  return &frame->cu_array->data[x_in_scu + y_in_scu * (frame->width_in_lcu << MAX_DEPTH)];
}

cu_info_t* kvz_videoframe_get_cu(videoframe_t * const frame, const unsigned int x_in_scu, const unsigned int y_in_scu)
{
  assert(x_in_scu < (frame->width_in_lcu << MAX_DEPTH));
  assert(y_in_scu < (frame->height_in_lcu << MAX_DEPTH));
  
  return &frame->cu_array->data[x_in_scu + y_in_scu * (frame->width_in_lcu << MAX_DEPTH)];
}