This article describes one of the simplest audio encoders based on FFmpeg. The encoder realizes the PCM audio sample data encoded as AAC compressed encoded data. The encoder code is very simple, but each line of code is very important. By looking at the source code of this encoder
This article describes one of the simplest audio encoders based on FFmpeg. The encoder realizes the PCM audio sampling data encoded as AAC compressed encoded data. The encoder code is very simple, but each line of code is important. By looking at the source code of this encoder
Microsoft Expression encoder is a part of Microsoft expression. Its main function is to convert and recode media files, such as converting video or audio files into formats supported by the web, you can also Convert audio and video file formats to the formats supported by Microsoft smooth streaming or Silverlight media file formats.
My blog tells about WMS9, can implement streaming media server, but without WME (Windows Media Encoder) support, always feel the lack of something, Here's how to get the device video audio stream through the. NET implementation WME and push it to remote (of course, local) streaming media broadcast publishing point.
First, download the WME9 SDK, installation completed: This step is to experience the main WME
to add custom dataReturn mita_null;}
Mita_dwordMita_callbackExample_getflags (mita_moduleheader * pthis){//////////////////////////////////////// //////////////////////////////////// Todo: Get the tag that supports decoding.// See mita_ef_xxxx// Note: If seek is not supported, you cannot add mita_ef_seekable.Return mita_df_default;}
Mita_boolMita_callbackExample_isopen (mita_moduleheader * pthis){//////////////////////////////////////// //////////////////////////////////// Todo: determines whet
the research object, its input has mic (microphone), Phonein telephone signal and so on, output has headphone hp (headphone), speaker speaker and phoneout telephone signal. Also note the input and output of audio digital signals between the codec and CPU terminals.
1) Playing music
2) Recording
3) Telephone
---call------to answer---
4 Call via Bluetooth
---call------to answer---
2. System Architecture
The Android
HP (headphone), speaker and phoneout telephone signals. In addition, you must note that there are Audio Digital Signal Input and Output between codec and CPU.
1) Play Music
2) Recording
3) telephone
--- Call --- answer ---
4) call through Bluetooth
--- Call --- answer ---
2. System Architecture
The android audio system has a relatively standard and sound architecture, from the upper-layer application
Users have a number of alternatives when it comes to enjoying the audio from their Android devices. most devices have a built-in speaker, headphone jacks for wired headsets, and descrialso feature Bluetooth connectivity and support for A2DP audio.
Check What Hardware is Being UsedHow your app behaves might be affected by which
Users often have a variety of options when using their Android device for multimedia interaction, most of which have a built-in microphone, a jack for a wired headset, and some that provide support for Bluetooth devices, A2DP support, and so on.Check which device is being usedYour app should be affected by the audio playback device you're using to make a reasonable response.The following code snippet shows that you can request Audiomanager to check if
Li pengjun, Android Project Director of AI totem, finalized the speech subject: Android audio Port Data Communication Development
Topic Introduction: Li Peng will explain how to implement bidirectional communication between audio ports and external devices based on Android audio interfaces based on the development practices of AI totem and
This article translated from: http://developer.android.com/training/managing-audio/audio-output.html
You can have many options when using Android devices to play audio. Most devices have built-in speakers, wired headphones, and many devices that support Bluetooth and a2dp audio.
Check the
Here we should all be beginners, amateur taping, so let me first declare that the hardware I recommend is also for this application level, Want to do very professional please visit some of the professional audio application site, here is not a very professional recommendation introduced. Recommended first is the microphone, microphone generally according to the principle of operation is divided into movin
Hardware and software analysis of audio input channel for Android bottom-line developmentWe all know that headphone mic is integrated in the always-on kind of four-segment headphone mic plug that is more commonly used on Android devices. However, there will be separate cases, compared with the normal PC -mounted Android System, then this is the case. Therefore, it is necessary to the
Lesson three the hardware operation example of recording
The following is mainly about the hardware use and operation of recording:
1. Handling the recording environment, to ensure quiet and sound insulation (preferably to do the sound absorption processing, but the amateur conditions are not good, this is a bit difficult, I can not do, hehe).
2. Fixed the microphone to the microphone rack, must be secur
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