/*
 * GStreamer gstreamer-yolotensordecoder
 * Copyright (C) 2024 Collabora Ltd
 *  Authors: Daniel Morin <daniel.morin@collabora.com>
 *           Vineet Suryan <vineet.suryan@collabora.com>
 *           Santosh Mahto <santosh.mahto@collabora.com>
 *
 * gstyolotensordecoder.h
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */


#ifndef __GST_YOLO_TENSOR_DECODER_H__
#define __GST_YOLO_TENSOR_DECODER_H__

#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/base/base.h>

G_BEGIN_DECLS

#define GST_TYPE_YOLO_TENSOR_DECODER (gst_yolo_tensor_decoder_get_type ())
G_DECLARE_FINAL_TYPE (GstYoloTensorDecoder, gst_yolo_tensor_decoder,
    GST, YOLO_TENSOR_DECODER, GstBaseTransform)

typedef struct _BBox
{
  gint x;
  gint y;
  guint w;
  guint h;
} BBox;

struct _GstYoloTensorDecoder
{
  GstBaseTransform basetransform;
  /* Box confidence threshold */
  gfloat box_confi_thresh;
  /* Class confidence threshold */
  gfloat cls_confi_thresh;
  /* Intersection-of-Union threshold */
  gfloat iou_thresh;
  /* Maximum detection/mask */
  gsize max_detection;
  /* Video Info */
  GstVideoInfo video_info;

  /* Candidates with a class confidence level above threshold. */
  GPtrArray *sel_candidates;

  /* Final candidates selected that respect class confidence level,
   * NMS and maximum detection. */
  GPtrArray *selected;

  /* Tensor-id identifying mask tensors out of yolo inference process. */
  GQuark mask_tensor_id;

  /* Tensor-id identifying logits tensors out of yolo inference process. */
  GQuark logits_tensor_id;

  /* Region of the mask that contain valid segmentation information */
  BBox mask_roi;

  /* Scaling factor to convert bounding-box coordinates to mask coordinates */
  gfloat bb2mask_gain;

  /* Mask width */
  guint mask_w;

  /* Mask height */
  guint mask_h;

  /* Mask length */
  gsize mask_length;

  /* BufferPool for mask */
  GstBufferPool *mask_pool;

  /* Labels file */
  gchar *label_file;

  /* Labels */
  GArray *labels;
};

struct _GstYoloTensorDecoderClass
{
  GstBaseTransformClass parent_class;
};

GST_ELEMENT_REGISTER_DECLARE (yolo_tensor_decoder)

G_END_DECLS
#endif /* __GST_YOLO_TENSOR_DECODER_H__ */