I am doing recording in following way and storing byte array in a binary file. But the binary file I am getting is not in any format. what can be the problem? code...
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I currently have a Loop back program for testing Audio on Android devices.It uses AudioRecord and AudioTrack to record PCM audio from the Mic and play PCM audio out the earpiece. So as you can see in the creation of the AudioTrack and AudioRecord the Encoding is supplied via the AudioFormat but this only allows 16 bit or 8 bit PCM.I have my own G711 Codec implementation now and I want to be able to encode the audio from the Mic and decode it going into the EarPiece, So I have encode(short lin[], int offset, byte enc[], int frames) and decode(byte enc[], short lin[], int frames) methods but I'm unsure as to how to use them to encode and the decode the audio from the AudioRecord and AudioTrack.
View 2 Replies View RelatedRecord audio using the native AudioRecord interface? I'm trying to do this on my Neo Freerunner but all I get in logcat is:
I/AudioHardwareALSA( 787): Initialized ALSA CAPTURE device AndroidRecord_Microphone
D/AudioHardwareALSA( 787): Set CAPTURE PCM format to S16_LE (Signed 16 bit Little Endian)
D/AudioHardwareALSA( 787): Using 1 channel for CAPTURE.
D/AudioHardwareALSA( 787): Set CAPTURE sample rate to 8000 HZ
E/AudioFlinger( 787): Error reading audio input
W/AudioRecord( 947): obtainBuffer timed out (is the CPU pegged?) user=00000000, server=00000000
The android::AudioRecord::read() function returns the number of bytes I'm trying to read, but the resulting buffer is filled with zeroes.
Is there a way to determine the audio format of an audio file in Android? On normal java I do it like this:
File file= new File(...);
AudioInputStream stream = AudioSystem.getAudioInputStream(file);
AudioFormat format= stream.getFormat();
I am streaming an MP3 audio and instead making this MP3 audio to play, I want it to be converted to PCM format and pass this PCM audio to AudioTrack(as it takes PCM data as input.) instead of passing my MP3 stream to MediaPlayer. Can anyone please help me to convert the MP3 to PCM stream?
View 3 Replies View RelatedDoes such a thing exist please folks - want to rip some audio for an mp3 ringtone from a comedy video clip
View 4 Replies View RelatedI have developed a streaming app for Android. My app is streaming AAC audio.The app works fine on 1.5, 1.6, and 2.1. I tested it on Froyo, the android 2.2 and it does not work there.I have try everthing - Streaming directly from server url - Download incrementaly the content, store in a temp file, start reading. - Download incrementaly the content, store in a ContentProvider and start reading.No luck, I always got errors : 06-23 02:47:02.257: ERROR/MediaPlayer(266): Unable to to create media player 06-23 02:47:02.257: INFO/System.out(266): setDataSourceFD failed.: status=0x80000000 Does Froyo support AAC? Anyone happens to stream AAC?
View 4 Replies View RelatedI want to record audio in MP3 format in my android application. I know I can read PCM audio using the audioRecord class. Is there a java library compatible with android that will encode PCM to MP3? Is it possible to use the Lame mp3 encoder library?
View 1 Replies View RelatedAccording to the MS website, Windows Media Player queries an MTP device to see what formats it supports. My Razr Maxx HD supports ogg and m4a. When attempting to sync WMP does not sync those files stating they might not be supported on the device. Being that I've had so much trouble in the past even getting any of the Android devices to be properly detected as an MTP device I'm worried this is a driver issue.I should be able to get WMP to at least convert them.
this is the device mis-reporting the formats, Windows not querying them properly, or an actual WMP issue? Would like to be able to get sync working without any conversions. Maybe there is a way to hardcode formats within the mtp inf file?
I have the following native source code that is supposed to display video. It plays 3gp file ok and I can hear the audio, but the video is not shown.
CODE:..............
Now i want to record audio in WAV format. What should i do now because android only supports *.3gp or *.AMR type?
View 6 Replies View RelatedI need to record audio and video files in 3gp/mp4 format at the same file and same time.
When i run my application file is created with videofile.3gp but video does not record in sd card on the emulator.please let me clear one thing does video records on the emulator? if i run this code on android supported device do these error clear.
Please help me. I am new to this topic.please find the code and errors below.
package com.video;
* @copy Rights
* audio.java
* sample code for Eminosoft Developerworks Article
* Android development Team
* www.eminosoft.cm
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class video extends Activity {
public MediaRecorder mrec = null;
private Button startRecording = null;
private Button stopRecording = null;
private static final String TAG = "SoundRecordingDemo";
File audiofile;
File video;
private MediaPlayer mMediaPlayer;}
My application cannot handle the JNIE overhead, as I need to make 2 JNIE calls to the native C/C++ code for every 20msec. So I am trying to use the native media libraries and the realted C/C++ files provided by Android in the folder "//external/srec/audio/test" of the donut build. Ex. AudioHardwareRecord, AudioInRecord etc.. I am implementing all the calls in the native layer.
I am using the sampling rate as 8000 and want to read 160 samples (320 bytes) at a time.
I used the following values to create the AudioRecord..
CODE:..........
It says "success" after creating this interface but I am getting the error "Bad Value" if I am doing the InitCheck.
And it is crashing once I start reading the samples or if I try to retrieve the configured sampling rate.
Has anybody tried to access this native code?
How to record audio into ogg format?
View 1 Replies View RelatedThe HTC web site claims support for .mp4 and .wmv playback but I have had no luck. I have used various programs from HandBrake to Sony and I can get audio with no video (mp4). I can get audio with still image video (wmv). The DI seems very picky as to which videos it will actually play back. Is there a recommended way to convert my videos / DVS into a format the DI can play?
View 1 Replies View Relatedi want to knw what r the Audio and Video format r supported by Android by Default is thier any plug-ins needs to be add in to SDK .
View 3 Replies View RelatedIn the android phone, click "settings" and then goto "date & time settings" , user can choose "Use 24-hour format" or not. My question is how to find out this setting through api?
View 6 Replies View RelatedThis maybe be a simple question but how do you format a double into a dollar format? For example I have a value of 4.2. In a textview I would like to see $4.20. Also what are my options for applying the correct currency symbol?
View 2 Replies View RelatedPassing two int values m =0 & s = 11, to below function String formatted = String.format("%1$02d:%2$02d", m, s); returning the value like .0:11 ,What could be the problem? m=0, s=11 -->.0:11 m=0, s=1 --> .0:.1. The 0 added to format the string always coming as '.' (dot). Can anyone know ,from where the number patterns are getting loaded in Android? I gone thorough the code, Its related the following file, androiddalviklibcoreicusrcmainjavacomibmicu4jniutil Resources.java ->localeData.numberPattern. How the pattern for particular locale is loaded, What could be the problem for the above?
View 3 Replies View RelatedI'm trying to figure out how to use the AudioRecord class.I created a callback with a logging message, but don't ever see it called.Do you see anything wrong with what I'm doing? Do you have an example of how to use the API?
View 6 Replies View RelatedI want to use AudioRecord and AudioTrack classes(in SDK 1.5) in my program. Where can I find how to use it. Is there any API demo program for this?. If not it is greatly appreciated if someone can post a sample code in this forum.
View 7 Replies View RelatedMy application uses AudioTrack in streaming mode and AudioRecord simultaneously.My problem is that I start them at the same time, but I have no guarantee that they will actually start playback ecording in the same timestamp. The reason I need this kind of accuracy is because I use echo cancellation (subtracting audio played to speaker from the recording).My echo canceller doesn't require an exact delay, but the delay introduced between AudioTrack and AudioRecord moves in the range of 250ms (between different runs), and that's too much - each run is different because they start themselves asynchronously. The API doesn't provide me a way to make sure they start in the same time, so I thought about measuring this starting delay somehow and then using it in my calculation.Does anyone have an idea how to do that, utilizing their API or in any other way?
View 2 Replies View RelatedI used AudioRecord on emulator and phone. I found that AudioRecord is not working on phone: 1> the min-buffer-size on simulator is much smaller than phone 2> The audio data I read from phone is all zero.
View 2 Replies View RelatedI'm doing a voice recording using AudioRecord class and the main requirement that the frequency must be 16000 Hz. I'm using only emulator in development process for now and met the problem that I can't set frequency more than 8000, otherwise I get bufferSize -2, and can't create instance of AudioRecord with such buffer. Thank you to Szabolcs Vrbos, he told me that this problem is only with emulator and several Samsung phones, device can record with higher frequency.I need a word from Android engineers that I will be able to record voice with 16000 Hz frequency on for instance HTC Hero (Android 1.5)or similar device with os 1.5 or higher.
View 2 Replies View Relatedthe location where the audioflinger, surfaceflinger and cameraservice talk to MediaRecorder's APIs? Is there any relation between MediaRecorder and AudioRecord?
View 6 Replies View RelatedWe have been getting reports of audio recording not working on Samsung Moment phones on 2.1-update1.
int bufferSize = AudioRecord.getMinBufferSize(sampleRate, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT); this.audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);
generates these logs: I/AudioPolicyManager( 1889): getInput() inputSource 1, samplingRate 16000, format 1, channels 10, acoustics 0 W/AudioHardwareALSA( 1889): openInputStream : mInput already exists!! E/AudioRecord( 2618): Could not get audio input for record source 1 E/AudioRecord-JNI( 2618): Error creating AudioRecord instance: initialization check failed. E/AudioRecord-Java( 2618): [ android.media.AudioRecord ] Error code -20 when initializing native AudioRecord object. I can't find the "mInput already exists". anywhere in the source base, could this perhaps be an error message included by the OEM?
How can I get the amplitude/volume when recording with AudioRecord?
View 2 Replies View RelatedI've been having an issue with using AudioRecord for Android. I've read as much as I can find online about it, but I cannot seem to get a good initialization. I have tried the Android 2.2 emulator, 1.5 emulator and my phone, an HTC Incredible running Froyo. The emulators and my phone fail initialization. I've tried sampling rates of 8000, 11025, and 44100, formats of CHANNEL_IN_MONO/STEREO and CHANNEL_CONFIGURATION_MONO/STEREO, 8bit and 16bit encoding (8 bit makes the getMinBufferSize fail), and Audio Source of MIC and DEFAULT. All result in the variable test becoming 0 after running a get state(failed initialization). It seems from everything I've read that this should correctly initialize the object. I have played around with the multiplier on buflen, to have it range from 512 (the result of the function) to 102400 because I had heard that HTC devices require something above 8192. For testing my problem I made a new, small project that recreates my problem as simply as possible. I pull out the constants needed into local ints then run the constructor and access the getState method for checking if it worked. Code...
View 1 Replies View RelatedHere is my AudioRecorder class, using audio record, why is it not producing any sound data?
import java.io.FileOutputStream; import java.io.IOException; import android.content.Context; import android.media.AudioFormat; import android.media.AudioRecord; import android.media.MediaRecorder; public class AudioRecorder implements Runnable {public boolean isRecording = false; byte[] tempBuffer = new byte[AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_CONFIGURATION_STEREO,......
I am using the AudioRecord class to analize raw pcm bytes as it comes in the mic.
So thats working nicely. Now i need convert the pcm bytes into decibel.
I have a formula that takes sound presure in Pa into db. db = 20 * log10(Pa/ref Pa)
So the question is the bytes i am getting from audiorecorder from the buffer what is it is it amplitude pascal sound pressure or what.
I tried to putting the value into te formula but it comes back with very hight db so i do not think its right