bmcv_debug_savedata
该接口用于将bm_image对象输出至内部定义的二进制文件方便debug,二进制文件格式以及解析方式在示例代码中给出。
处理器型号支持:
该接口支持BM1684/BM1684X。
接口形式:
bm_status_t bmcv_debug_savedata( bm_image input, const char *name );
参数说明:
bm_image input
输入参数。输入 bm_image。
const char* name
输入参数。保存的二进制文件路径以及文件名称。
返回值说明:
BM_SUCCESS: 成功
其他:失败
注意事项:
在调用 bmcv_debug_savedata()之前必须确保输入的 image 已被正确创建并保证is_attached,否则该函数将返回失败。
代码示例以及二进制文件解析方法:
bm_image input; bm_image_create(handle, 1080, 1920, FORMAT_BGR_PLANAR, DATA_TYPE_EXT_1N_BYTE, &input); bm_image_alloc_dev_mem(input); // ... your own function bmcv_debug_savedata(input, "input.bin"); // now a file named "input.bin" is generated in current folder // the following code shows how to parse the binary file FILE * fp = fopen("input.bin", "rb"); uint32_t data_offset = 0; uint32_t width = 0; uint32_t height = 0; uint32_t image_format = 0; uint32_t data_type = 0; uint32_t plane_num = 0; uint32_t stride[4] = {0}; uint64_t size[4] = {0}; fread(&data_offset, sizeof(uint32_t), 1, fp); fread(&width, sizeof(uint32_t), 1, fp); fread(&height, sizeof(uint32_t), 1, fp); fread(&image_format, sizeof(uint32_t), 1, fp); fread(&data_type, sizeof(uint32_t), 1, fp); fread(&plane_num, sizeof(uint32_t), 1, fp); fread(size, sizeof(size), 1, fp); fread(stride, sizeof(stride), 1, fp); uint32_t channel_stride[4] = {0}; uint32_t batch_stride[4] = {0}; uint32_t meta_data_size[4] = {0}; uint32_t N[4] = {0}; uint32_t C[4] = {0}; uint32_t H[4] = {0}; uint32_t W[4] = {0}; fread(channel_stride, sizeof(channel_stride), 1, fp); fread(batch_stride, sizeof(batch_stride), 1, fp); fread(meta_data_size, sizeof(meta_data_size), 1, fp); fread(N, sizeof(N), 1, fp); fread(C, sizeof(C), 1, fp); fread(H, sizeof(H), 1, fp); fread(W, sizeof(W), 1, fp); fseek(fp, data_offset, SEEK_SET); std::vector<std::unique_ptr<unsigned char[]>> host_ptr; host_ptr.resize(plane_num); void* void_ptr[4] = {0}; for (uint32_t i = 0; i < plane_num; i++) { host_ptr[i] = std::unique_ptr<unsigned char[]>(new unsigned char[size[i]]); void_ptr[i] = host_ptr[i].get(); fread(host_ptr[i].get(), 1, size[i], fp); } fclose(fp); std::cout << "image width " << width << " image height " << height << " image format " << image_format << " data type " << data_type << " plane num " << plane_num << std::endl; for (uint32_t i = 0; i < plane_num; i++) { std::cout << "plane" << i << " size " << size[i] << " C " << C[i] << " H " << H[i] << " W " << W[i] << " stride " << stride[i] << std::endl; } // The following shows how to recover the image bm_image recover; bm_image_create(handle, height, width, (bm_image_format_ext)image_format, (bm_image_data_format_ext)data_type, &recover, (int *)stride); bm_image_copy_host_to_device(recover, (void **)&void_ptr); bm_image_write_to_bmp(recover, "recover.bmp"); bm_image_destroy(recover);