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Convert

该类接口可将图像像素值从一种数据类型转换为另一种数据类型。

函数接口声明如下：

  • 将无符号整型类型转为无符号整型类型：

    HmppResult HMPPI_Convert_8u16u_C1R(const uint8_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u16u_C3R(const uint8_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u16u_C4R(const uint8_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u16u_AC4R(const uint8_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u8u_C1R(const uint16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u8u_C3R(const uint16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u8u_C4R(const uint16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u8u_AC4R(const uint16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32u_C1R(const uint16_t *src, int32_t srcStep, uint32_t *dst, int32_t dstStep, HmppiSize roiSize);

  • 将无符号整型类型转为有符号整型类型：

    HmppResult HMPPI_Convert_8u16s_C1R(const uint8_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u16s_C3R(const uint8_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u16s_C4R(const uint8_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u16s_AC4R(const uint8_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32s_C1R(const uint8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32s_C3R(const uint8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32s_C4R(const uint8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32s_AC4R(const uint8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32s_C1R(const uint16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32s_C3R(const uint16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32s_C4R(const uint16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32s_AC4R(const uint16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

  • 将无符号整型类型转为浮点类型：

    HmppResult HMPPI_Convert_8u32f_C1R(const uint8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32f_C3R(const uint8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32f_C4R(const uint8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8u32f_AC4R(const uint8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32f_C1R(const uint16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32f_C3R(const uint16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32f_AC4R(const uint16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16u32f_C4R(const uint16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32u32f_C1R(const uint32_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

  • 将有符号整型类型转为无符号整数类型：

    HmppResult HMPPI_Convert_8s8u_C1Rs(const int8_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s16u_C1Rs(const int8_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32u_C1Rs(const int8_t *src, int32_t srcStep, uint32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s8u_C1R(const int16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s8u_C3R(const int16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s8u_C4R(const int16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s8u_AC4R(const int16_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s16u_C1Rs(const int16_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32u_C1Rs(const int16_t *src, int32_t srcStep, uint32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8u_C1R(const int32_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8u_C3R(const int32_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8u_AC4R(const int32_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8u_C4R(const int32_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s32u_C1Rs(const int32_t *src, int32_t srcStep, uint32_t *dst, int32_t dstStep, HmppiSize roiSize);

  • 将有符号整型类型转为有符号整数类型：

    HmppResult HMPPI_Convert_8s16s_C1R(const int8_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32s_C1R(const int8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32s_C3R(const int8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32s_C4R(const int8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32s_AC4R(const int8_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32s_C1R(const int16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32s_C3R(const int16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32s_AC4R(const int16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32s_C4R(const int16_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8s_C1R(const int32_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8s_C3R(const int32_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8s_AC4R(const int32_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s8s_C4R(const int32_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize);

  • 将有符号整型类型转为浮点类型：

    HmppResult HMPPI_Convert_8s32f_C1R(const int8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s64f_C1R(constint8_t*src, int32_tsrcStep, double*dst, int32_tdstStep, HmppiSizeroiSize);

    HmppResult HMPPI_Convert_8s32f_C3R(const int8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32f_C4R(const int8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_8s32f_AC4R(const int8_t *src, int32_t srcStep, float* dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32f_C1R(const int16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32f_C3R(const int16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32f_AC4R(const int16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_16s32f_C4R(const int16_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

    HmppResult HMPPI_Convert_32s32f_C1R(const int32_t *src, int32_t srcStep, float *dst, int32_t dstStep, HmppiSize roiSize);

  • 将浮点数转为无符号整数类型：

    HmppResult HMPPI_Convert_32f8u_C1R(const float *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f8u_C3R(const float *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f8u_AC4R(const float *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f8u_C4R(const float *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16u_C1R(const float *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16u_C3R(const float *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16u_AC4R(const float *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16u_C4R(const float *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

  • 将浮点数转为有符号整数类型：

    HmppResult HMPPI_Convert_32f8s_C1R(const float *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f8s_C3R(const float *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f8s_AC4R(const float *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f8s_C4R(const float *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16s_C1R(const float *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16s_C3R(const float *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16s_AC4R(const float *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

    HmppResult HMPPI_Convert_32f16s_C4R(const float *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode);

  • 带缩放的有符号整数之间的转换：

    HmppResult HMPPI_Convert_16s8s_C1R_S(const int16_t *src, int32_t srcStep, int8_t* dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32s16s_C1R_S(const int32_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

  • 带缩放的无符号整型之间的转换：

    HmppResult HMPPI_Convert_32u8u_C1R_S(const uint32_t *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32u16u_C1R_S(const uint32_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

  • 带缩放的有符号整数转为无符号整数：

    HmppResult HMPPI_Convert_32s16u_C1R_S(const int32_t *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

  • 带缩放的无符号整数转为有符号整数：

    HmppResult HMPPI_Convert_8u8s_C1R_S(const uint8_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_16u8s_C1R_S(const uint16_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_16u16s_C1R_S(const uint16_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32u8s_C1R_S(const uint32_t *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32u16s_C1R_S(const uint32_t *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32u32s_C1R_S(const uint32_t *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

  • 带缩放的浮点数和整数之间的转换：

    HmppResult HMPPI_Convert_32f8u_C1R_S(const float *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32f8s_C1R_S(const float *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32f16u_C1R_S(const float *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32f16s_C1R_S(const float *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32f32u_C1R_S(const float *src, int32_t srcStep, uint32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_32f32s_C1R_S(const float *src, int32_t srcStep, int32_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_64f8u_C1R_S(const double *src, int32_t srcStep, uint8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_64f8s_C1R_S(const double *src, int32_t srcStep, int8_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_64f16u_C1R_S(const double *src, int32_t srcStep, uint16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

    HmppResult HMPPI_Convert_64f16s_C1R_S(const double *src, int32_t srcStep, int16_t *dst, int32_t dstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

  • 带缩放的浮点数和无符号整数之间的原址转换：

    HmppResult HMPPI_Convert_32f32u_C1IR_S(uint32_t *srcDst, int32_t srcDstStep, HmppiSize roiSize, HmppRoundMode roundMode, double scale);

参数

参数名

描述

取值范围

输入/输出

src

指向源向量的指针。

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）。

(0, INT_MAX]

输入

dst

指向目的向量的指针。

非空

输出

srcDst

指向源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）。

(0, INT_MAX]

输入

srcDstStep

源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

roiSize

源和目标图像感兴趣区域的大小（以像素为单位）。

roiSize.width∈(0, INT_MAX]，roiSize.height∈(0, INT_MAX]

输入

scale

比例因子。

[INT_MIN, INT_MAX]

输入

roundMode

HMPP_RND_ZERO：指定将浮点值截断为零。

0

输入

HMPP_RND_NEAR：指定当小数部分等于0.5时，浮点值四舍五入为最接近的偶数整数；否则，浮点值四舍五入为最接近的整数。

1

输入

HMPP_RND_FINANCIAL：指定当小数部分小于0.5时，浮点值向下舍入为最接近的整数；如果小数部分等于或大于0.5，则向上舍入为最接近的整数。

2

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这两个入参中存在空指针。

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_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条件。

HMPP_STS_NOT_SUPPORTED_MODE_ERR

输入模式为不支持的舍入模式。

HMPP_STS_ROI_ERR

roiSize.width > 步长。

示例

#define SRC_BUFFER_SIZE_T 28
#define DST_BUFFER_SIZE_T 28

int ConvertExample(){
    int32_t i;
    HmppiSize roi = {5,4};
    float dst[DST_BUFFER_SIZE_T] = {0.0f};
    uint8_t src[SRC_BUFFER_SIZE_T] = { 1, 2, 4, 8, 16, 8, 4, 
                                       1, 2, 4, 8, 16, 8, 4, 
                                       1, 2, 4, 8, 16, 8, 4, 
                                       1, 2, 4, 8, 16, 8, 4,};
    int32_t srcStep = 7 * sizeof(uint8_t);
    int32_t dstStep = 7 * sizeof(float);
    HmppResult result = HMPPI_Convert_8u32f_C1R(src, srcStep, dst, dstStep, roi);
    printf("result = %d \ndst =", result);
    for (i = 0; i < DST_BUFFER_SIZE_T; i++) {
        printf(" %f  ", dst[i]);
    }
    return 0;
}

运行结果：

result = 0
dst = 1.000000  2.000000  4.000000  8.000000  16.000000  0.000000  0.000000  1.000000  2.000000  4.000000  8.000000  16.000000  0.000000  0.000000 1.000000  2.000000  4.000000  8.000000  16.000000  0.000000  0.000000 1.000000  2.000000  4.000000  8.000000  16.000000  0.000000  0.000000
父主题： 基础运算