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ScaleC

缩放图像的像素值并将其转换为另一个位深度。

函数接口声明如下：

HmppResult HMPPI_ScaleC_8u_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u8s_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u16u_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u16s_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u32s_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u32f_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u64f_C1R(const uint8_t *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s8u_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s16u_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s16s_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s32s_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s32f_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s64f_C1R(const int8_t *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u8u_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u8s_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u16s_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u32s_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u32f_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u64f_C1R(const uint16_t *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s8u_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s8s_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s16u_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s32s_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s32f_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s64f_C1R(const int16_t *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s8u_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s8s_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s16u_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s16s_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s32f_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s64f_C1R(const int32_t *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f8u_C1R(const float *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f8s_C1R(const float *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f16u_C1R(const float *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f16s_C1R(const float *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f32s_C1R(const float *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f_C1R(const float *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f64f_C1R(const float *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f8u_C1R(const double *src, int32_t srcStep, double mVal, double aVal, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f8s_C1R(const double *src, int32_t srcStep, double mVal, double aVal, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f16u_C1R(const double *src, int32_t srcStep, double mVal, double aVal, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f16s_C1R(const double *src, int32_t srcStep, double mVal, double aVal, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f32s_C1R(const double *src, int32_t srcStep, double mVal, double aVal, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f32f_C1R(const double *src, int32_t srcStep, double mVal, double aVal, float *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f_C1R(const double *src, int32_t srcStep, double mVal, double aVal, double *dst, int32_t dstStep, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8u_C1IR(uint8_t *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_8s_C1IR(int8_t *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16u_C1IR(uint16_t *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_16s_C1IR(int16_t *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32s_C1IR(int32_t *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_32f_C1IR(float *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

HmppResult HMPPI_ScaleC_64f_C1IR(double *srcDst, int32_t srcDstStep, double mVal, double aVal, HmppiSize roiSize, HmppHintAlgorithm hint);

参数

参数名

描述

取值范围

输入/输出

src

指向源图像感兴趣区域的指针。

非空

输入

srcStep

源图像中连续行起点之间的距离（以字节为单位）。

非负整数

输入

dst

指向目标图像感兴趣区域的指针。

非空

输入/输出

dstStep

目标图像中连续行的起点之间的距离（以字节为单位）。

非负整数

输入

srcDst

指向源和目标缓冲区的指针。

非空

输入/输出

srcDstStep

源图像和目标图像中连续行的起点之间的距离。

非负整数

输入

mVal

用于缩放的乘数值。

双精度取值范围

输入

aVal

缩放的偏移值。

双精度取值范围

输入

hint

函数的算法实现方式。

0或2

输入

roiSize

源和目标图像感兴趣区域的大小（以像素为单位）。

非负整数

输入

返回值

  • 成功：返回HMPP_STS_NO_ERR。
  • 失败：返回错误码。

错误码

错误码

描述

HMPP_STS_NULL_PTR_ERR

src，dst中存在空指针。

HMPP_STS_SIZE_ERR

roiSize的字段为零或负值。

HMPP_STS_STEP_ERR

srcStep，dstStep中存在零或负值。

HMPP_STS_ROI_ERR

roiSize.width * 通道数 * 数据类型所占字节数 > 步长。

HMPP_STS_NOT_EVEN_STEP_ERR

srcStep、dstStep不能被src、dst所属数据类型的字节长度整除的错误。

HMPP_STS_BAD_ARG_ERR

hint != 0且hint != 2时的返回值，表示算法模式入参不合法。

HMPP_STS_NO_ERR

返回值正确，任何其他值表示错误或警告。

示例

#include <stdio.h>
#include "hmppi.h"
#include "hmpp_type.h"

void ScaleCExample()
{
    HmppiSize roi = {5, 7};

    uint8_t src[45] = {1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5,
                       1, 2, 3, 4, 5
                      };
    uint8_t dst[49] = {0};
    int32_t srcStep = 5 * sizeof(uint8_t);
    int32_t dstStep = 7 * sizeof(uint8_t);
    double aVal = 0.5;
    double mVal = 0.5;
    HmppHintAlgorithm hint = HMPP_ALGHINT_ACCURATE;

    (void)HMPPI_ScaleC_8u_C1R(src, srcStep, mVal, aVal, dst, dstStep, roi, hint);

    for (int i = 0; i < 7; i++) {
        for (int j = 0; j < 7; j++) {
            printf("%d ", dst[i * 7 + j]);
        }
        printf("\n");
    }
}

int main()
{
    ScaleCExample();
    return 0;
}

运行结果：

1 2 2 2 3 0 0
1 2 2 2 3 0 0
1 2 2 2 3 0 0
1 2 2 2 3 0 0
1 2 2 2 3 0 0
1 2 2 2 3 0 0
1 2 2 2 3 0 0
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