duckstation

duckstation, but archived from the revision just before upstream changed it to a proprietary software project, this version is the libre one
git clone https://git.neptards.moe/u3shit/duckstation.git
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detection_bbox.h (3524B)

      1 /*
      2  * This file is part of FFmpeg.
      3  *
      4  * FFmpeg is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Lesser General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2.1 of the License, or (at your option) any later version.
      8  *
      9  * FFmpeg is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Lesser General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Lesser General Public
     15  * License along with FFmpeg; if not, write to the Free Software
     16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     17  */
     18 
     19 #ifndef AVUTIL_DETECTION_BBOX_H
     20 #define AVUTIL_DETECTION_BBOX_H
     21 
     22 #include "rational.h"
     23 #include "avassert.h"
     24 #include "frame.h"
     25 
     26 typedef struct AVDetectionBBox {
     27     /**
     28      * Distance in pixels from the left/top edge of the frame,
     29      * together with width and height, defining the bounding box.
     30      */
     31     int x;
     32     int y;
     33     int w;
     34     int h;
     35 
     36 #define AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE 64
     37 
     38     /**
     39      * Detect result with confidence
     40      */
     41     char detect_label[AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE];
     42     AVRational detect_confidence;
     43 
     44     /**
     45      * At most 4 classifications based on the detected bounding box.
     46      * For example, we can get max 4 different attributes with 4 different
     47      * DNN models on one bounding box.
     48      * classify_count is zero if no classification.
     49      */
     50 #define AV_NUM_DETECTION_BBOX_CLASSIFY 4
     51     uint32_t classify_count;
     52     char classify_labels[AV_NUM_DETECTION_BBOX_CLASSIFY][AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE];
     53     AVRational classify_confidences[AV_NUM_DETECTION_BBOX_CLASSIFY];
     54 } AVDetectionBBox;
     55 
     56 typedef struct AVDetectionBBoxHeader {
     57     /**
     58      * Information about how the bounding box is generated.
     59      * for example, the DNN model name.
     60      */
     61     char source[256];
     62 
     63     /**
     64      * Number of bounding boxes in the array.
     65      */
     66     uint32_t nb_bboxes;
     67 
     68     /**
     69      * Offset in bytes from the beginning of this structure at which
     70      * the array of bounding boxes starts.
     71      */
     72     size_t bboxes_offset;
     73 
     74     /**
     75      * Size of each bounding box in bytes.
     76      */
     77     size_t bbox_size;
     78 } AVDetectionBBoxHeader;
     79 
     80 /*
     81  * Get the bounding box at the specified {@code idx}. Must be between 0 and nb_bboxes.
     82  */
     83 static av_always_inline AVDetectionBBox *
     84 av_get_detection_bbox(const AVDetectionBBoxHeader *header, unsigned int idx)
     85 {
     86     av_assert0(idx < header->nb_bboxes);
     87     return (AVDetectionBBox *)((uint8_t *)header + header->bboxes_offset +
     88                                idx * header->bbox_size);
     89 }
     90 
     91 /**
     92  * Allocates memory for AVDetectionBBoxHeader, plus an array of {@code nb_bboxes}
     93  * AVDetectionBBox, and initializes the variables.
     94  * Can be freed with a normal av_free() call.
     95  *
     96  * @param nb_bboxes number of AVDetectionBBox structures to allocate
     97  * @param out_size if non-NULL, the size in bytes of the resulting data array is
     98  * written here.
     99  */
    100 AVDetectionBBoxHeader *av_detection_bbox_alloc(uint32_t nb_bboxes, size_t *out_size);
    101 
    102 /**
    103  * Allocates memory for AVDetectionBBoxHeader, plus an array of {@code nb_bboxes}
    104  * AVDetectionBBox, in the given AVFrame {@code frame} as AVFrameSideData of type
    105  * AV_FRAME_DATA_DETECTION_BBOXES and initializes the variables.
    106  */
    107 AVDetectionBBoxHeader *av_detection_bbox_create_side_data(AVFrame *frame, uint32_t nb_bboxes);
    108 #endif