mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_DETECTION_BBOX_H
|
|
#define AVUTIL_DETECTION_BBOX_H
|
|
|
|
#include "rational.h"
|
|
#include "avassert.h"
|
|
#include "frame.h"
|
|
|
|
typedef struct AVDetectionBBox {
|
|
/**
|
|
* Distance in pixels from the left/top edge of the frame,
|
|
* together with width and height, defining the bounding box.
|
|
*/
|
|
int x;
|
|
int y;
|
|
int w;
|
|
int h;
|
|
|
|
#define AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE 64
|
|
|
|
/**
|
|
* Detect result with confidence
|
|
*/
|
|
char detect_label[AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE];
|
|
AVRational detect_confidence;
|
|
|
|
/**
|
|
* At most 4 classifications based on the detected bounding box.
|
|
* For example, we can get max 4 different attributes with 4 different
|
|
* DNN models on one bounding box.
|
|
* classify_count is zero if no classification.
|
|
*/
|
|
#define AV_NUM_DETECTION_BBOX_CLASSIFY 4
|
|
uint32_t classify_count;
|
|
char classify_labels[AV_NUM_DETECTION_BBOX_CLASSIFY][AV_DETECTION_BBOX_LABEL_NAME_MAX_SIZE];
|
|
AVRational classify_confidences[AV_NUM_DETECTION_BBOX_CLASSIFY];
|
|
} AVDetectionBBox;
|
|
|
|
typedef struct AVDetectionBBoxHeader {
|
|
/**
|
|
* Information about how the bounding box is generated.
|
|
* for example, the DNN model name.
|
|
*/
|
|
char source[256];
|
|
|
|
/**
|
|
* Number of bounding boxes in the array.
|
|
*/
|
|
uint32_t nb_bboxes;
|
|
|
|
/**
|
|
* Offset in bytes from the beginning of this structure at which
|
|
* the array of bounding boxes starts.
|
|
*/
|
|
size_t bboxes_offset;
|
|
|
|
/**
|
|
* Size of each bounding box in bytes.
|
|
*/
|
|
size_t bbox_size;
|
|
} AVDetectionBBoxHeader;
|
|
|
|
/*
|
|
* Get the bounding box at the specified {@code idx}. Must be between 0 and nb_bboxes.
|
|
*/
|
|
static av_always_inline AVDetectionBBox *
|
|
av_get_detection_bbox(const AVDetectionBBoxHeader *header, unsigned int idx)
|
|
{
|
|
av_assert0(idx < header->nb_bboxes);
|
|
return (AVDetectionBBox *)((uint8_t *)header + header->bboxes_offset +
|
|
idx * header->bbox_size);
|
|
}
|
|
|
|
/**
|
|
* Allocates memory for AVDetectionBBoxHeader, plus an array of {@code nb_bboxes}
|
|
* AVDetectionBBox, and initializes the variables.
|
|
* Can be freed with a normal av_free() call.
|
|
*
|
|
* @param out_size if non-NULL, the size in bytes of the resulting data array is
|
|
* written here.
|
|
*/
|
|
AVDetectionBBoxHeader *av_detection_bbox_alloc(uint32_t nb_bboxes, size_t *out_size);
|
|
|
|
/**
|
|
* Allocates memory for AVDetectionBBoxHeader, plus an array of {@code nb_bboxes}
|
|
* AVDetectionBBox, in the given AVFrame {@code frame} as AVFrameSideData of type
|
|
* AV_FRAME_DATA_DETECTION_BBOXES and initializes the variables.
|
|
*/
|
|
AVDetectionBBoxHeader *av_detection_bbox_create_side_data(AVFrame *frame, uint32_t nb_bboxes);
|
|
#endif
|