samplegrabber

How do i use samplegrabber in vc++ ? The samplegrabber is not defined

由 扶醉桌前 提交于 2020-12-12 17:44:36
问题 In visual community 2015 I have a c++ project. In the cpp file top I have #include "stdafx.h" #include "VideoCaptureFilterSample.h" #include "VideoCaptureFilterSampleDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #endif I also set when entering the project properties > VC++ Directories I added this directory in include: C:\Program Files %28x86%29\Microsoft SDKs\Windows\v7.1\Samples\multimedia\directshow\baseclasses The problem is when I type in my code this: hr = CoCreateInstance(CLSID

How do i use samplegrabber in vc++ ? The samplegrabber is not defined

由 我只是一个虾纸丫 提交于 2020-12-12 17:44:20
问题 In visual community 2015 I have a c++ project. In the cpp file top I have #include "stdafx.h" #include "VideoCaptureFilterSample.h" #include "VideoCaptureFilterSampleDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #endif I also set when entering the project properties > VC++ Directories I added this directory in include: C:\Program Files %28x86%29\Microsoft SDKs\Windows\v7.1\Samples\multimedia\directshow\baseclasses The problem is when I type in my code this: hr = CoCreateInstance(CLSID

How do i use samplegrabber in vc++ ? The samplegrabber is not defined

由 别说谁变了你拦得住时间么 提交于 2020-12-12 17:43:45
问题 In visual community 2015 I have a c++ project. In the cpp file top I have #include "stdafx.h" #include "VideoCaptureFilterSample.h" #include "VideoCaptureFilterSampleDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #endif I also set when entering the project properties > VC++ Directories I added this directory in include: C:\Program Files %28x86%29\Microsoft SDKs\Windows\v7.1\Samples\multimedia\directshow\baseclasses The problem is when I type in my code this: hr = CoCreateInstance(CLSID

How do i use samplegrabber in vc++ ? The samplegrabber is not defined

由 五迷三道 提交于 2020-12-12 17:43:09
问题 In visual community 2015 I have a c++ project. In the cpp file top I have #include "stdafx.h" #include "VideoCaptureFilterSample.h" #include "VideoCaptureFilterSampleDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #endif I also set when entering the project properties > VC++ Directories I added this directory in include: C:\Program Files %28x86%29\Microsoft SDKs\Windows\v7.1\Samples\multimedia\directshow\baseclasses The problem is when I type in my code this: hr = CoCreateInstance(CLSID

Unable to display two cameras in DirectShow

由 走远了吗. 提交于 2019-12-12 10:11:50
问题 I'm using two DirectShow graphs, running on separate threads, to display streaming video (using VMR 9 on a seperate) and capture frames (using Sample Grabber) from two webcams. One of them is a built-in webcam (HP TrueVision HD) and the other is a Creative VF0520 connected to a USB port. None of the other USB ports are in use. The problem is that the Creative camera turns on (LED lights up), but no stream comes through. The problem persists even if I disabled the built-in webcam. However, the

Different approaches on getting captured video frames in DirectShow

由 好久不见. 提交于 2019-12-11 16:46:54
问题 I was using a callback mechanism to grab the webcam frames in my media application. It worked, but was slow due to certain additional buffer functions that were performed within the callback itself. Now I am trying the other way to get frames. That is, call a method and grab the frame (instead of callback). I used a sample in CodeProject which makes use of IVMRWindowlessControl9::GetCurrentImage. I encountered the following issues. In a Microsoft webcam, the Preview didn't render (only black

iSampleGrabber, callback method. Code works, but might need some love?

由 房东的猫 提交于 2019-12-10 12:06:47
问题 Okay. So I've got my isamplegrabber callback method to work, and I am able to get the data into opencv. But due to the fact that this is totally new to me, I just want to get some feedback if the code is "correct", cause it doesn't seem to be a good one.. At first in my code (from internet) I've got: #pragma region Formerly located in qedit.h in Windows SDK, now obsoleted and defined within project void createDirectShowGraph(void); struct __declspec(uuid("0579154a-2b53-4994-b0d0-e773148eff85"

Seeking keyframes using DirectShowNet

由 十年热恋 提交于 2019-12-08 05:33:48
问题 My task is : I create a graph, attach a SampleGrabber to it, and grab the keyframes using the IMediaSeeking interface after building the graph. The following is what I have done : In the Main method : Type comType = Type.GetTypeFromCLSID ( new Guid ( "e436ebb3-524f-11ce-9f53-0020af0ba770" ) ); IGraphBuilder graphBuilder = (IGraphBuilder) Activator.CreateInstance ( comType ); comType = Type.GetTypeFromCLSID ( new Guid ( "C1F400A0-3F08-11d3-9F0B-006008039E37" ) ); ISampleGrabber sampleGrabber =

Seeking keyframes using DirectShowNet

由 只愿长相守 提交于 2019-12-08 05:27:28
My task is : I create a graph, attach a SampleGrabber to it, and grab the keyframes using the IMediaSeeking interface after building the graph. The following is what I have done : In the Main method : Type comType = Type.GetTypeFromCLSID ( new Guid ( "e436ebb3-524f-11ce-9f53-0020af0ba770" ) ); IGraphBuilder graphBuilder = (IGraphBuilder) Activator.CreateInstance ( comType ); comType = Type.GetTypeFromCLSID ( new Guid ( "C1F400A0-3F08-11d3-9F0B-006008039E37" ) ); ISampleGrabber sampleGrabber = (ISampleGrabber) Activator.CreateInstance ( comType ); graphBuilder.AddFilter ( (IBaseFilter)
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