将XDMA驱动程序移植到AVStream但得到了MAGIC_STOPPED

问题描述

我正在尝试将XDMA WDF驱动程序移植到AVStream以捕获1920x1080流 但是当ISR被召唤时，我总是会出现MAGIC_STOPPED矮人

EngineRingProgramDma（）有什么问题吗？

void VideoPin::EngineRingProgramDma(KSSTREAM_POINTER* p_clone)
{
    // Buffer allocated from AllocateCommonBuffer()
    DMA_DESCRIPTOR* descriptor = (DMA_DESCRIPTOR*)_p_device->getBufVirtAdr();
    PHYSICAL_ADDRESS nextDescLA = _p_device->getBufPhysAdr();

    // fill descriptors 
    for (ULONG i = 0; i < p_clone->Offset->Count; ++i)
    {
        // fill Magic code to descriptor
        descriptor[i].control = (0xAD4B0000 | XDMA_DESC_EOP_BIT | XDMA_DESC_COMPLETED_BIT);
        descriptor[i].numBytes = p_clone->Offset->Mappings[i].ByteCount;

        // source address are unused

        // destination is host memory
        PHYSICAL_ADDRESS dst = p_clone->Offset->Mappings[i].PhysicalAddress;
        descriptor[i].dstAddrLo = dst.LowPart;
        descriptor[i].dstAddrHi = dst.HighPart;

        // next descriptor bus address 
        nextDescLA.QuadPart += sizeof(DMA_DESCRIPTOR);
        descriptor[i].nextLo = nextDescLA.LowPart;
        descriptor[i].nextHi = nextDescLA.HighPart;
        
    }

}

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）