compress audio file android

= STATE_SELECT_ALBUM) {/*** if it is a song folder, enter the song list of this folder */if (cursor. move ToPosition (position) {String [] columns = {MediaStore. audio. media. DATA, MediaStore. audio. media. _ ID, MediaStore. audio. media. TITLE, MediaStore. audio. media. DISPLAY_NAME, MediaStore.

directory. The list of songs entering the directory */if (cursor.movetoposition (position)) {string[] columns = {MediaStore.Audio.Media.DATA, Mediastore.audio.media._id,mediastore.audio.media.title,mediastore.audio.media.display_name, MediaStore.Audio.Media.MIME_TYPE}; String where = android.provider.mediastore.audio.media.album+ "=?"; String whereval[] = {cursor.getstring (Cursor.getcolumnindex (MediaStore.Audio.Albums.ALBUM)}); String = Android.provider.mediastore.audio.media.title;cursor = M

complex, and common programs are difficult to implement their encryption and decompression algorithms. However, ACM and VCM technologies are introduced for Windows 98 operating systems that provide strong support for multimedia, it is used to manage all audio and video encoding and Decoder (CODER-decoder) in the system, that is, codecs, which is used to implement audio and video data encoding and decoding

Reprint Please specify source: http://blog.csdn.net/zhaokaiqiang1992Today, an open blog, found a friend sent me a private message, ask the following questions, so close this article, for its doubts.From this friend's question, we need to understand the following questions, in order to give him a good answer:(1) How can I get information about all the songs in my phone?(2) When the song file changes, such as adding and deleting operations, how to updat

MediaRecord can be used for recording in Android, which is easy to operate. However, it is not professional enough to Process audio. If you want to process audio in real time or encapsulate the audio You can use AudioRecord for recording. Here is a piece of code. Audio Rec

Mediarecord can be used for recording in Android, which is easy to operate. However, it is not professional enough to Process audio. If you want to process audio in real time or encapsulate the audio You can use audiorecord for recording. Here is a piece of code. Audio Recor

　　Different Android products often differ in the design of audio, and these differences can be obtained with the audio_policy.conf profile. There are two locations for audio profile storage in the Android system, and the storage address can be found in the AudioPolicyManagerBase.cpp

); Shader Mrectpaint.setshader (mlineargradient) added to the brush; @Override protected void OnDraw (Canvas Canvas) {Super.ondraw (Canvas); double mrandom; float currentheight; for (int i = 0; i Complete code for the layout file: The above is a small series to introduce the Android audio bar effect (imitation

This article focuses on how to capture a single frame of audio data on the Android platform. Before reading this article, it is recommended to read my previous article, "Android Audio Development (1): Fundamentals", because in the audio development process, often involves th

/AudioManager.htmlInt STREAM_MUSIC The audio stream for music playback B. getAssets ()Http://developer.android.com/reference/android/content/res/Resources.html#getAssets ()Public final AssetManager getAssets ()Added in API level 1 Retrieve underlying AssetManager storage for these resources.C. AssetManagerHttp://developer.android.com/reference/android/content/res

One of Android audio playback, android audio playbackSoundPool IntroductionIn addition to playing audio using MediaPlayer, Android also provides SoundPool for playing sound effects. SoundPool uses the sound effect pool to manage m

Categories: Unity, C #, VS2015Date Created: 2016-04-05 I. INTRODUCTIONThe choice of audio file resources should be based on the principle of smooth, trouble-free operation. The commonly used audio files are listed below.. AIFF is converted to uncompressed audio when importing, which is best for short sound effects.. WA

The first four articles, respectively, introduced the basic knowledge of audio development, how to capture a frame of audio, how to play a frame of audio, how to store and parse WAV file, it is suggested that interested small partners to read, this article focuses on how to encode and decode a frame of

. AudioEncoder. AMR_NB); // Audio Encoding Method Recorder. setOutputFile ("/mnt/sdcard/itcast. amr "); Recorder. prepare (); // expected preparation Recorder. start (); // starts to burn ... Recorder. stop (); stop burning Recorder. reset (); // reset Recorder. release (); // resources must be released after the data is burned. Android-multimedia (audio player)

Android audio recording and Android audio recordingMediaRecorder class detailsMobile phones generally have microphones and cameras, and Android systems can use these hardware to record audio and video.Android provides a MediaRecor

system. These are the frameworks designed to facilitate upper-level application development.· LibrariesWe know that many of the classes in the framework layer are really just "intermediaries" for applications that use the Android library file. Because the upper-level applications are written in the Java language, they require the support of the most straightforward Java interfaces, which is one of the impl

briefly describe how to implement bidirectional communication between audio interfaces? What are the requirements? First, convert the information entered by the external audio device into a special audio signal (sound) and transmit it to the mobile phone through the audio port. The mobile phone program monitors

prevent multiple music apps from playing audio at the same time, Android uses audio focus to control the playback of audio. In this lesson, you can learn how to request audio focus, monitor the loss of audio focus, and how to res

Manage audio playback (from the Chinese version of the Android official training course (v0.9.5 )) If our applications can play audio, it is important for users to control the audio in their expected ways. To ensure a good user experience, we should allow the application to manage the current

highest, the value 0 is the worst, and the third parameter is: the stream image that saves the compressed data. compress (Bitmap. compressFormat. JPEG, options, baos); // compress options % here and store the compressed data in baos options-= 10; // decrease by 10 every time} ByteArrayInputStream isBm = new ByteArrayInputStream (baos. toByteArray (); // store the compressed data baos in ByteArrayInputStrea