wasapi

问题 I am taking my first dives in to the WASAPI system of windows and I do not know if what I want is even possible with the windows API. I am attempting to write program that will record the sound from various programs and break each in to a separate recorded track/audio file. From the reseacrch I have done I know the unit I need to record is the various audio sessions being rendered to a endpoint, and the normal way of recording is by taking the render endpoint and performing a loopback.

问题 Is there a way to capture the audio outputted by only a single application, and not the system as a whole? With WASAPI I can capture the entire system audio, but I wish to only capture the audio from one application (there will be many applications, all playing audio at once.) 回答1: Detours is used for hooking. Using the lib to hook IAudioRenderClient interface, including GetBuffer and ReleaseBuffer , and read data from the buffer. 回答2: Depending on the APIs used by the application to play the

问题 How can i gain access to the current wave output sample stream? In a December 2006 question on social.microsoft.com (How to record from 'Wave' or 'Stereo Mix' in Vista?) yjslash asked: On Windows XP or earlier, I could capture the audio stream to the speaker. In other words, DirectSoundCapture was able to capture from the selected source line. And if "Wave Out Mix" or "Stereo Mix" or something similar was selected as recording source line, DirectSoundCapture was able to record the audio

问题 I am trying to write a C# code that outputs the current audio output level from each of the windows application accessing the sound output (as shown with constantly changing green bars of the Volume mixer). The program will check every 10 ms, and outputs sth like this: Windows Media Player: 30, Mozilla Firefox: 0, Adobe Flash Player: 35 (as per the figure) I am using Windows 7, and trying it in C# (as Java cannot achieve this). I have found ways to get and set the Master Volume (the handle