DM8168,分辨率问题

hl chu

Intellectual 761 points

DM8168，用的是dvrrdk4.01，数据从网络摄像头进来。分辨率是1600*1200，不知道8168支不支持这种不是很常规的分辨率的配置，如果支持的话该怎么配置呢？请各位帮帮忙，多谢！

9 年多前

0 Chris Meng 9 年多前

TI__Guru**** 155073 points

Chu Hi，

网络摄像头进来，就是通过网络输入DM8168。DM8168解码是支持1600x1200的分辨率，需要修改最大支持的输入高度大于1200.

0 hl chu 9 年多前回复 Chris Meng

Intellectual 761 points

Chris Hi，

感谢您的回复，请问应该在哪里改呢，还有2048*1536的分辨率。

0 Chris Meng 9 年多前回复 hl chu

TI__Guru**** 155073 points

你好，

本地解码的例子应该是可以支持大于1920x1080的码流的。请问你是否有尝试过？

0 hl chu 9 年多前回复 Chris Meng

Intellectual 761 points

Chris Hi，

感谢您的回复，我试了本地的解码例子，分辨率是1600*1200，播放不了。接收数据的线程里有组合I帧的部分：

// If I frame is recieved in multiple packets we need to accumulate them into one buffer - First packet
                    if(pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail] == 0x67 && pObj->gIPNC_info->readSizeV < 200)
                    {
                        printf("\nGot a frame in multiple packets-Start\n");
                        tmpSize += pObj->gIPNC_info->readSizeV;
                        pObj->gIPNC_info->rVBTail = pObj->gIPNC_info->readSizeV;
                        if(pObj->codecType == VCODEC_TYPE_H264)
                        {
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+0]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+1]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+2]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+3]    = 0x01;
                         pObj->gIPNC_info->rVBTail += 4;
                         tmpSize += 4;
                         pObj->gIPNC_info->readVidBuf += pObj->gIPNC_info->rVBTail;
                        }
                        continue;
                    }
                    // If I frame is recieved in multiple packets we need to accumulate them into one buffer - Middle packet
                    if(tmpSize > 0 && pObj->gIPNC_info->readVidBuf[0] == 0x68)
                    {
                        printf("\nGot a frame in multiple packets-middle\n");
                        tmpSize += pObj->gIPNC_info->readSizeV;
                        pObj->gIPNC_info->rVBTail = pObj->gIPNC_info->readSizeV;
                        if(pObj->codecType == VCODEC_TYPE_H264)
                        {
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+0]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+1]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+2]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+3]    = 0x01;
                         pObj->gIPNC_info->rVBTail += 4;
                         tmpSize += 4;
                         pObj->gIPNC_info->readVidBuf += pObj->gIPNC_info->rVBTail;
                        }
                        continue;
                    }
                    // If I frame is recieved in multiple packets we need to accumulate them into one buffer - Last packet
                    if(tmpSize > 0 && pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail] == 0x65)
                    {
                        printf("\nGot a frame in multiple packets-End\n");
                        pObj->gIPNC_info->readSizeV += tmpSize;
                        tmpSize = 0; //Reset this for next frame that comes in multiple packets
                    }