#include "VpcPicConverter.h"
#include "depend_headers.h"

#define ALIGN_UP(val, align) (((val) % (align) == 0) ? (val) : (((val) / (align) + 1) * (align)))

bool VpcPicConverter::init(aclrtContext context){

    aclrtSetCurrentContext(context);
    aclrtCreateStream(&stream_);

    // 3. 创建图片数据处理通道时的通道描述信息，dvppChannelDesc_是acldvppChannelDesc类型
    dvppChannelDesc_ = acldvppCreateChannelDesc();

    // 4. 创建图片数据处理的通道。
    int ret = acldvppCreateChannel(dvppChannelDesc_);
    if(ret != ACL_ERROR_NONE){
        LOG_ERROR("acldvppCreateChannel failed !");
        return false;
    }

    ret = acldvppSetChannelDescMode(dvppChannelDesc_, DVPP_CHNMODE_VPC);
    if(ret != ACL_ERROR_NONE){
        LOG_ERROR("acldvppSetChannelDescMode failed !");
        return false;
    }

    return true;
}

DvppRgbMemory* VpcPicConverter::convert2bgr(acldvppPicDesc *inputDesc_, int out_width, int out_height, bool key_frame){

    // 8. 创建色域转换的输出图片的描述信息，并设置各属性值, 输出的宽和高要求和输入一致
    // 如果色域转换的输出图片作为模型推理的输入，则输出图片的宽高要与模型要求的宽高保持一致
    // outputDesc_是acldvppPicDesc类型
    int out_buf_width = ALIGN_UP(out_width, 16) * 3;
    int out_buf_height = ALIGN_UP(out_height, 2);
    int out_buf_size = out_buf_width * out_buf_height;

    DvppRgbMemory* rgbMem = new DvppRgbMemory(3, out_buf_width, out_buf_height, out_buf_size, "", to_string(m_devId), key_frame);
    void *outBufferDev_ = (void*)rgbMem->getMem();

    acldvppPicDesc *outputDesc_= acldvppCreatePicDesc();
    acldvppSetPicDescData(outputDesc_, outBufferDev_);
    acldvppSetPicDescFormat(outputDesc_, PIXEL_FORMAT_BGR_888); 
    acldvppSetPicDescWidth(outputDesc_, out_width);
    acldvppSetPicDescHeight(outputDesc_, out_height);
    acldvppSetPicDescWidthStride(outputDesc_, out_buf_width);
    acldvppSetPicDescHeightStride(outputDesc_, out_buf_height);
    acldvppSetPicDescSize(outputDesc_, out_buf_size);

    

    aclError ret = ACL_ERROR_NONE;
    do{
        // 9. 执行异步色域转换，再调用aclrtSynchronizeStream接口阻塞程序运行，直到指定Stream中的所有任务都完成
        ret = acldvppVpcConvertColorAsync(dvppChannelDesc_, inputDesc_, outputDesc_, stream_);
        if(ret != ACL_ERROR_NONE){
            LOG_ERROR("acldvppVpcConvertColorAsync failed - out_width:{} out_height:{} out_buf_width:{}  out_buf_height:{} out_buf_size:{}", out_width, out_height, out_buf_width,  out_buf_height, out_buf_size);
            break;
        }
        ret = aclrtSynchronizeStream(stream_);
        if(ret != ACL_ERROR_NONE){
            LOG_ERROR("aclrtSynchronizeStream failed - out_width:{} out_height:{} out_buf_width:{}  out_buf_height:{} out_buf_size:{}", out_width, out_height, out_buf_width,  out_buf_height, out_buf_size);
            break;
        }
    }while(0);

    // 10. 色域转换结束后，释放资源，包括输入/输出图片的描述信息、输入/输出内存
    // acldvppDestroyPicDesc(inputDesc_); 
    acldvppDestroyPicDesc(outputDesc_);

    if(ret != ACL_ERROR_NONE){
        delete rgbMem;
        rgbMem = nullptr;
    }

    return rgbMem;
}

void VpcPicConverter::release(){
    aclrtDestroyStream(stream_);
    // aclrtDestroyContext(context_);
}