DM8107: Dm8107 related issues

1. 8107 add snapshot

如下图，在enc link里面添加了一路mjpeg的编码，修改如下；

As shown in the figure below, a MJPEG encoding is added in the ENC link, which is modified as follows:;

There was only one H264 encoding

Via Venc_ Getbitstreambuffer (& fullbufferlist, 0); when getting codectype, the code stream of MJPEG was not obtained. At the same time, debugging found that only one stream was created when enc link created the bitstream

Modify pobj - > inQueInfo.numCh =2; the following error occurs

2. 1080p60 cannot reach full frame

我们目前是sdi和hdmi双路输入，并支持画中画功能，画中画模式情况下最大只有1080p30

At present, we have SDI and HDMI dual input, and support the picture in picture function. In the picture in picture mode, the maximum is 1080p30

我们需要单路情况下能够达到1080p60，同时支持实时sdi和hdmi切换

We need to be able to achieve 1080p60 in single channel, and support real-time SDI and HDMI handoff

我们目前的link流程请参考：dm8107单路编码不能满帧调试.docx

Our current link process, please refer to: dm8107 single channel code can not debug full frame.docx

3、 8107的cvbs输入问题

3. CVBS input problem of 8107

我们使用调试cvbs输入时出现如下图现象：

When we use debug CVBS input, the following phenomenon appears:

图像上面部分的是直接环出的图像，下面部分是输出给8107编码过后的图像。

The upper part of the image is the image directly looped out, and the lower part is the image encoded by 8107.

环出的图像基本正常，但是8107输出的图像宽度只有一半，sdi和hdmi输入都是正常的

The output image width of 8107 is only half, and the input of SDI and HDMI is normal

Debugging and analysis of dm8107 single channel code not full frame

目前的直播编码器使用的是合成画面，由于内存资源有限，输入端信号源1080p60，但是通过画面合成并编码后只能得到1080p30，现在不用合成画面的情况下单路输入1080p60编码过后也是1080p60，故做了如下调试和修改：

At present, the live video encoder uses composite picture. Due to the limited memory resources, the input signal source is 1080p60, but only 1080p30 can be obtained after picture synthesis and coding. Now, when the synthetic picture is not used, the single channel input 1080p60 encoding is also 1080p60, so the following debugging and modification are made:

配置单路和多路输出：

Configuration of single channel and multi-channel output:

入口函数：

Entry function:

VIS_ Videosystem() this function is the initialization and configuration of some acquisition and coding parameters. These are only initialization configurations, which are basically related to hardware;

初始化函数如下，请注意传入函数的参数：

The initialization function is as follows. Note the parameters of the passed in function:

Through configuration nParams.video.numCapCh To select single channel or multi-channel;

Enter different initialization processing functions according to different channels, as shown in the following figure:

Note: mutich_ createVcapVenc_ all_ New() is the multi-channel processing function we call

单路和多路的选择主要是创建link的不同而不同（每一个link在ti里面表示一个线程，通过创建相应的link，我们实现m3里面的相应功能）；

The selection of single path and multi-channel is mainly different from the creation of links (each link represents a thread in Ti. By creating the corresponding link, we can realize the corresponding functions in m3);

System_linkCreate（）表示创建相应的link，然后链接到m3处理器里面；例如：

System_ Linkcreate() means to create a corresponding link and link it to the M3 processor. For example:

System_linkCreate(gMultiCh_VdecVdisObj.ipcInVpssId , &ipcInVpssPrm, sizeof(ipcInVpssPrm));

System_ linkCreate(gMultiCh_ VdecVdisObj.ipcInVpssId , &ipcInVpssPrm, sizeof(ipcInVpssPrm));

第一个参数：表示创建link的句柄，通过这个句柄就能控制相关的link;

The first parameter: indicates the handle to create the link, through which the related link can be controlled;

第二个参数：表示创建link时的配置参数

The second parameter: indicates the configuration parameter when the link is created

第三个参数：表示第二个参数的大小，一般用sizeof()；

The third parameter: indicates the size of the second parameter, generally sizeof();

System_ Linkcontrol() configures the function of the corresponding link through the corresponding parameters, as shown in the following figure:

First parameter: System_ LINK_ ID_ M3vpss: represents the handle of VPSs link of M3; this handle is the handle of creation;

第二个参数：SYSTEM_M3VPSS_CMD_RESET_VIDEO_DEVICES：表示设置复位video 设备，作用是：在进行操作前，将其复位。

The second parameter: system_ M3VPSS_ CMD_ RESET_ VIDEO_ Devices: to set and reset the video device. Its function is to reset it before operation.

第三个参数：null，表示需要配置的参数，由于这里是复位不需要配置参数，所以为null

The third parameter, null, indicates the parameter to be configured. Since this is reset, no configuration parameter is required, so it is null

第四个参数：表示第三个参数的大小，等于第三个参数的大小

The fourth parameter: indicates the size of the third parameter, which is equal to the size of the third parameter

第五个参数：TURE表示是否等待线程的应答，如需要应答机制则选择TRUE；

The fifth parameter: ture indicates whether to wait for the response of the thread. If a response mechanism is required, select true;

The following is the flow chart of acquisition coding and output of picture synthesis:

For example:

cap表示采集线程，这个线程的句柄：SYSTEM_LINK_ID_CAPTURE = VPSS_LINK(SYSTEM_VPSS_LINK_ID_CAPTURE),这个是系统规定的采集线程句柄，使用该句柄创建采集线程，具体的处理在m3里面，相应的代码位置在：Z:\project\dm8107\dm8107\sdk\dvr_rdk\mcfw\src_bios6

Cap represents the collection thread. The handle of this thread is system_ LINK_ ID_ CAPTURE = VPSS_ LINK(SYSTEM_ VPSS_ LINK_ ID_ Capture). This is the collection thread handle specified by the system. Use this handle to create a collection thread. The specific processing is in m3, and the corresponding code location is in Z: project / dm8107 / dm8107 / SDK / DVR_ rdk\mcfw\src_ bios6

capswms，osd,invpss,dup,dei,enc等都有相关的句柄定义，具体的句柄定义在：Z:\project\dm8107\dm8107\sdk\dvr_rdk\mcfw\interfaces\link_api目录下的相关的文件里面都有定义和注释；（这些都是ti定义的）

Caps WMS, OSD, invpss, DUP, Dei, ENC, etc. have related handle definitions. The specific handle definitions are in Z: project / dm8107 / dm8107 / SDK / DVR_ rdk\mcfw\interfaces\link_ There are definitions and comments in the relevant files in the API directory; (these are defined by Ti)

In order to achieve 60 frames after coding, the following tests are carried out:

1、我们采集的时候关闭一路输入，只使用单路输入：

1. When collecting, we turn off one channel input and only use single channel input

Z:\project\dm8107\dm8107\sdk\dvr_rdk\mcfw\src_linux\mcfw_api\usecases\ti810x\multich_vcap_venc.c中line450,如下图所示：

Z:\project\dm8107\dm8107\sdk\dvr_ rdk\mcfw\src_ linux\mcfw_ api\usecases\ti810x\multich_ vcap_ Line450 in Venc. C, as shown in the following figure:

SYSTEM_ CAPTURE_ INST_ VIP0_ Porta and system_ CAPTURE_ INST_ VIP1_ Porta represents SDI and HDMI ports respectively. We turn off one of them in the test, for example, turn off SDI and only use HDMI

改动：capturePrm.numVipInst表示采集通道数量，之前是2，修改成1；

Changes: capturePrm.numVipInst Represents the number of acquisition channels. It was 2 before and changed to 1;

gMainParams.video.numCapCh是全局通道数也置为1；

gMainParams.video.numCapCh Yes, the number of global channels is also set to 1;

pCaptureInstPrm->vipInstId表示通道的端口，设置为SYSTEM_CAPTURE_INST_VIP1_PORTA

Pcaptureinstprm - > vipinstid indicates the port of the channel and is set to system_ CAPTURE_ INST_ VIP1_ PORTA

其他流程不动，这样我们只会采集单路视频；为从采集到编码节约资源；

Other processes do not move, so we only collect single channel video, saving resources from acquisition to coding;

注意：以上参数必须都要修改，少了一个，或者值不正确都会导致设备无限重启；

Note: all the above parameters must be modified. If one parameter is missing or the value is incorrect, the device will restart infinitely;

结果：采集帧率是60帧但是编码达不到60帧；很早之前我们使用这种方法能够录制单路60帧的视频，但是后来录制的视频也只有52帧，画面合成的情况下最大只有48帧左右，有一点改善但是达不到满帧，具体原因不明；

Results: the acquisition frame rate is 60 frames, but the encoding is less than 60 frames; we used this method to record a single channel of 60 frames of video a long time ago, but the later recorded video was only 52 frames, and in the case of picture synthesis, the maximum was about 48 frames, which was a little improved, but it could not reach the full frame;

2、必须修改框架跳过merge

2. Frame must be modified to skip merge

因为画面成使用merge比较占用资源导致不能达到60帧，所以不适用merge理论上是能够达到60帧的；

Because the picture can't reach 60 frames because it takes up resources by using merge, so merge can't reach 60 frames in theory;

在前面原有操作不变的情况下，去掉merge，然后使用dei0作为输入源，进行编码；原来的display不变；这种情况下导致设备黑屏，然后偶发设备重启。但是采集端依然是60帧；

In the case that the previous original operation remains unchanged, remove merge, and then use dei0 as the input source for encoding; the original display remains unchanged; in this case, the device black screen is caused, and then the device restarts occasionally. But the acquisition end is still 60 frames;

具体的流程图如下所示：

The specific flow chart is as follows:

Cap 采集到的信号是60帧

The signal collected by cap is 60 frames

3. Modify the whole processing framework, refer to e700 single channel and single channel processing written before;

处理流程如下：

The treatment process is as follows:

As a result, the screen is also black, and a Dei handle error is reported;