• libyuv 海思平台编译测试

    一、下载代码

    二、编译安装

            首先，新建install文件夹用于存放生成的安装文件

            然后，cmake编译

    1. mike@ubuntu:/home/guide/hisi/project/alg_test/libyuv/libyuv-main$ 
    2. cmake -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_C_COMPILER=arm-himix200-linux-gcc -DCMAKE_CXX_COMPILER=arm-himix200-linux-g++ -DCMAKE_INSTALL_PREFIX=./install
    3.  
    4. mike@ubuntu:/home/guide/hisi/project/alg_test/libyuv/libyuv-main$ make -j8
    5.  
    6. mike@ubuntu:/home/guide/hisi/project/alg_test/libyuv/libyuv-main$ make install

            此时，可以看到在install文件夹下出现了编译后生成的bin include lib

    使用如下指令查看静态库文件的属性

    readelf -a libyuv.a

     机器属性是ARM，说明确实是海思编译器编译生成的

    三、测试

    3.1测试代码

    1. #include 
    2. #include 
    3. #include 
    4. #include 
    5. #include         
    6. #include "time.h" 
    7. #include 
    8.  
    9. #include "libyuv.h"
    10. #include "bmp.h" 
    11.  
    12.  
    13. enum ColorFormat {
    14.     YUV_I420 = 0,
    15.     YUV_NV21,
    16.     YUV_NV12,
    17.     BGR ,
    18.     RGB ,
    19.     BGRA,
    20.     RGBA,
    21.     ABGR,
    22.     ARGB,
    23.   };
    24.  
    25.  
    26. struct Buffer {
    27.     	uint32_t width, height;
    28.     	uint8_t *data[3];
    29.     	uint32_t stride[3];
    30.     	ColorFormat color;
    31. };
    32.  
    33. typedef enum FilterMode {
    34.   kFilterNone = 0,      // Point sample; Fastest.			640*480--3.67
    35.   kFilterLinear = 1,    // Filter horizontally only.
    36.   kFilterBilinear = 2,  // Faster than box, but lower quality scaling down.
    37.   kFilterBox = 3        // Highest quality.
    38. } FilterModeEnum;
    39.  
    40. // void LibyuvResize_NV21(const Buffer *src, Buffer *dst); 
    41. // void LibyuvResize_I420(const Buffer *src, Buffer *dst);
    42.  
    43. void LibyuvResize_I420(const Buffer *src, Buffer *dst, int mode) 
    44. {
    45.   // you should make complete info of buffer src, stride data width height 
    46.   dst->stride[0] = dst->width;			//stride for y
    47.   dst->stride[1] = dst->width >> 1;		//stride for u
    48.   dst->stride[2] = dst->width >> 1;		//stride for v
    49.   uint32_t dst_y_size = dst->width * dst->height;
    50.   uint32_t dst_u_size = dst->stride[1] * (dst->height >> 1);
    51.   //uint32_t dst_v_size = dst->stride[2] * (dst->height >> 1);
    52.   dst->data[1] = dst->data[0] + dst_y_size;
    53.   dst->data[2] = dst->data[1] + dst_u_size; 
    54.   dst->color = ColorFormat::YUV_I420;  
    55.  
    56. 	if(mode==0)
    57. 	{
    58.   		libyuv::I420Scale(src->data[0], src->stride[0],
    59.                     src->data[1], src->stride[1],
    60.                     src->data[2], src->stride[2],
    61.                     src->width, src->height,
    62.                     dst->data[0], dst->stride[0],
    63.                     dst->data[1],dst->stride[1],
    64.                     dst->data[2],dst->stride[2],
    65.                     dst->width, dst->height,
    66.                     libyuv::FilterMode::kFilterNone);//
    67. 	}else if(mode==1)
    68. 	{
    69.   		libyuv::I420Scale(src->data[0], src->stride[0],
    70.                     src->data[1], src->stride[1],
    71.                     src->data[2], src->stride[2],
    72.                     src->width, src->height,
    73.                     dst->data[0], dst->stride[0],
    74.                     dst->data[1],dst->stride[1],
    75.                     dst->data[2],dst->stride[2],
    76.                     dst->width, dst->height,
    77.                     libyuv::FilterMode::kFilterLinear);//
    78. 	}else if(mode==2)
    79. 	{
    80.   		libyuv::I420Scale(src->data[0], src->stride[0],
    81.                     src->data[1], src->stride[1],
    82.                     src->data[2], src->stride[2],
    83.                     src->width, src->height,
    84.                     dst->data[0], dst->stride[0],
    85.                     dst->data[1],dst->stride[1],
    86.                     dst->data[2],dst->stride[2],
    87.                     dst->width, dst->height,
    88.                     libyuv::FilterMode::kFilterBilinear);//
    89. 	}else if(mode == 3)
    90. 	{
    91.   		libyuv::I420Scale(src->data[0], src->stride[0],
    92.                     src->data[1], src->stride[1],
    93.                     src->data[2], src->stride[2],
    94.                     src->width, src->height,
    95.                     dst->data[0], dst->stride[0],
    96.                     dst->data[1],dst->stride[1],
    97.                     dst->data[2],dst->stride[2],
    98.                     dst->width, dst->height,
    99.                     libyuv::FilterMode::kFilterBox);//
    100. 	}else{}
    101.  
    102. }
    103.  
    104.  
    105. int main(void)
    106. {
    107. 	int i,j,k;
    108. 	int width = 256;//384;
    109. 	int height = 192;//288;
    110. 	int len  = width*height;
    111. 	int len_i420  = width*height + width*height/2;//yyyy u v
    112.  
    113. 	float time_use=0;
    114. 	struct timeval start_time;
    115. 	struct timeval end_time;
    116. 	struct timeval temp_time;
    117.  
    118. 	FILE* fp = fopen("../../../append_file/car_384288.yuv", "rb");
    119. 	// FILE* fp = fopen("../../../append_file/256x16pic.raw", "rb");
    120. 	if (!fp)
    121. 		return -1;
    122.  
    123. 	unsigned char *image_y8=(unsigned char*)malloc(len*3/2*sizeof(unsigned char));
    124. 	unsigned char *image_rgb888=(unsigned char*)malloc(len*3*sizeof(unsigned char));
    125. 	// unsigned char *image_i420=(unsigned char*)malloc(len_i420*sizeof(unsigned char));
    126.  
    127. 	float scale = 1.5;
    128. 	int width_scale = scale * width;
    129. 	int height_scale = scale * height;
    130. 	int len_scale  = width_scale*height_scale;
    131. 	unsigned char *result_y8 = (unsigned char*)malloc(len_scale*3/2*sizeof(unsigned char));
    132. 	unsigned char *result_rgb888 = (unsigned char*)malloc(len_scale*3*sizeof(unsigned char));
    133.  
    134. 	fread(image_y8, 1, len, fp);
    135.  
    136. 	for(i=0;i
    137. 	{
    138. 		for(j=0;j
    139. 		{
    140. 			image_rgb888[i*3*width + j*3] = image_y8[i*width+j];
    141. 			image_rgb888[i*3*width + j*3 + 1] = image_y8[i*width+j];
    142. 			image_rgb888[i*3*width + j*3 + 2] = image_y8[i*width+j];
    143. 		}
    144. 	}
    145.  
    146. 	bmp_creator("123.bmp", image_rgb888, height, width);
    147.  
    148. 	struct Buffer srcBuf, dstBuf;
    149. 	srcBuf.color = YUV_I420;
    150. 	srcBuf.width = width;
    151. 	srcBuf.height = height;
    152. 	srcBuf.stride[0] = width;
    153. 	srcBuf.stride[1] = width >> 1;
    154. 	srcBuf.stride[2] = width >> 1;
    155. 	uint32_t src_y_size = width * height;
    156.   	uint32_t src_u_size = srcBuf.stride[1] * (srcBuf.height >> 1);
    157. 	srcBuf.data[0] = image_y8;
    158. 	srcBuf.data[1] = srcBuf.data[0] + src_y_size;
    159. 	srcBuf.data[2] = srcBuf.data[1] + src_u_size;
    160.  
    161. 	dstBuf.width = width_scale;
    162. 	dstBuf.height = height_scale;
    163. 	dstBuf.data[0] = result_y8;
    164.  
    165. 	for(k=0;k<4;k++)
    166. 	{
    167. 		gettimeofday(&start_time,NULL);
    168. 		LibyuvResize_I420(&srcBuf, &dstBuf, k);
    169. 		gettimeofday(&end_time,NULL);
    170. 		time_use = (end_time.tv_sec-start_time.tv_sec)*1000000 + (end_time.tv_usec-start_time.tv_usec);//us
    171. 		printf("---- mode %d cost %8.2f ms   \n", k, time_use/1000);
    172. 	}
    173.  
    174.  
    175.  
    176. 	for(i=0;i
    177. 	{
    178. 		for(j=0;j
    179. 		{
    180. 			result_rgb888[i*3*width_scale + j*3] = result_y8[i*width_scale+j];
    181. 			result_rgb888[i*3*width_scale + j*3 + 1] = result_y8[i*width_scale+j];
    182. 			result_rgb888[i*3*width_scale + j*3 + 2] = result_y8[i*width_scale+j];
    183. 		}
    184. 	}
    185.  
    186. 	bmp_creator("234.bmp", result_rgb888, height_scale, width_scale);
    187.  
    188. 	fclose(fp);
    189. 	free(image_y8);
    190. 	free(image_rgb888);
    191.  
    192. 	free(result_y8);
    193. 	free(result_rgb888);
    194.  
    195. 	return 1;
    196. }
    197.  
    198.  
    199.  
    200.  
    201.  
    202.

    3.2测试结果

    I420格式640*480放大1.5倍

    1. /mnt/alg_test/libyuv/test_app # ./demo 
    2. ---- mode 0 cost     3.66 ms   
    3. ---- mode 1 cost     4.76 ms   
    4. ---- mode 2 cost     9.12 ms   
    5. ---- mode 3 cost     9.13 ms

    I420格式256*192放大1.5倍

    1. ---- mode 0 cost     1.68 ms   
    2. ---- mode 1 cost     2.12 ms   
    3. ---- mode 2 cost     4.16 ms   
    4. ---- mode 3 cost     4.02 ms

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  • 原文地址：https://blog.csdn.net/fuhanga123/article/details/125893935