Android :: Relation Between MediaRecorder And AudioRecord?
Apr 1, 2010the location where the audioflinger, surfaceflinger and cameraservice talk to MediaRecorder's APIs? Is there any relation between MediaRecorder and AudioRecord?
View 6 Replies
View 6 Replies
Android :: Service Binding Relation
Apr 30, 2010Can one service be bound to n activities?
View 1 Replies View RelatedAndroid :: Res And Src Folder Relation In Eclipse
Jun 3, 2010What is the importance of "res" and "src" folders in eclipse-android while creating android project.
View 2 Replies View RelatedAndroid :: Preference Activity And AppWidgetId Relation
Jul 4, 2010i'm using PreferenceActivity class to configure my widget. PreferenceActivity class automatically saves user preferences, so in widget update service i can call context.getSharedPreferences() and i obtain user preferences.Problem is follow: if you have many widget of same type, how PreferenceActivity class saves prefs? how i can load appWidgetId specific prefs from sharedPreferences?
View 7 Replies View RelatedAndroid :: Application Relation To Data Usage
May 30, 2010This is my first post and Its for sure not going to be my last
I was just wondering a few things
1. I'm getting the Nexus One and putting the SIM Card from my other Rogers phone into it... will there be any problems/pitfalls i should look out for?
2. As far as applications go, if I don't have a data plan, will i be paying out the rear end to use apps such as facebook, last.fm etc?
3. Is there an app that lets you text/call for free?
4. Do you have to have a data plan to download apps when not in range of WiFi (if so how much does it cost to browse the store and download an app?)
5. Does it cost anything to use the GPS (Do you need a GPS plan?)
6. Is there an app that lets you track Text messaging usage, call time, data usage etc?
Android :: Detailed Relation Between Contacts And Raw_contacts?
Mar 8, 2010Any one can help interpret the relation between the table "contacts" and "raw_contacts"?Is it one-to-one or one-to-many relation?I am puzzled because the SDK seems indicate it is one-to-many relation but after I checkout all data from the database table,I found it is one-to-one relation. And is there any detailed relation diagram describing android database tables?
View 8 Replies View RelatedAndroid :: Apps In Relation To Different Screen Sizes - Resolutions
Jun 1, 2010I am a current iPhone 3gs user migrating over to Android this Friday and getting the Evo 4g. Now, all iPhone/iPod touch screen sizes are the same and all the hardware specs are the same for the most part, but with Android you all kinds of resolutions, screen sizes, processors, etc etc...
Are all apps made for Android stretched to accomodate bigger screen sizes? For instance, I have played with my friend's Droid on Verizon and the screen is 3.7" at a resolution of 854x480 and he has showed me games on it like Gameloft's NOVA which is a full 3D first person shooter. So his phone essentially has a bigger resolution slightly than the HTC EVO 4G but smaller screen size (3.7" vs. 4.3"). So would the same game be stretched to fit my phone?
I'm wondering with different apps, are there any conflicts in relation to different spec phones?
Android :: In Opengl - Relation Between Pixels And Gl.gltranslatef - Floatx,y,z?
Sep 25, 2010I am trying to learn opengl stuff on Android. In the gl.gltranslatef(x,y,z) call, I am shifting my texture by some units in the +ve x direction. But I am unable to find the number of pixels does 1 unit of x belong to?
Here is what I am doing:
I call gl.glviewport(0,0,width,height); // This will set my rectangle with 0,0 as lowerleft corner and then extend it to accommodate width and height.
Then
I call to gl.glfrustrum(-5,5,-7,7,3,7); // I am little confused how this call is using the dimensions I set in gl.glviewport.
How will -5 to 5 units from left to right in the above call, translate to pixels on the screen of android?
I mean if width = 320 and height = 533 pixels, then what will be the number of pixels occupied on the screen due to the gl.glfrustrum call?
I am experimenting in the gl.gltranslatef call by specifying xshift as 5.0, but it does not translate the bitmap at the right or left corner of the screen, when I increase it to 6, part of it is still visible on the screen.
I am searching for the maximum number of units (in terms of X) which will represent extreme corners of my android phone screen.
HTC Hero :: Relation To Slugs Sticky?
Aug 4, 2010Im on 3 and as of yet there is no update to 2.1 so im on 1.5 ..now this maybe the most stupid question ever but in the sticky slug posted it says coustom ROM'S and all of them are 2.1 does that mean i have to have 2.1 update to be able to use one of these ROM'S, if not what are your recommendations for a custom ROM ie what one from the list is best and why . what will they do/ what do they do , will it improve this already good phone and in which ways , also if i am able to put one onto the phone how do i do it.
View 10 Replies View RelatedAndroid :: Using AudioRecord API
May 15, 2009I'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 RelatedAndroid :: Video With MediaRecorder
May 6, 2009Does anyone know how to use the MediaRecorder to API to capture video?
I am writing an application where I want to be able to capture video. I am trying to use the MediaRecorder API in 1.5, which is supposed to support video capture. However, there are no examples in the documentation on how to use this API for video (only for audio, and that works perfect). Basically what I do is the following:
CODE:...............
This gives me the following error: E/CameraInput( 37): No surface is available for display E/MediaRecorder( 7609): prepare failed: -2147483648
OK, so I have to have a surface to preview the video? Could be useful I guess, but not something I really need.
Could I use the VideoView widget for this, or is that only for playback?
Or am I supposed to use a SurfaceView to preview the video? I saw someone use that to capture images, but they used android.hardware.Camera to open the camera and capture a frame, and did not use MediaRecorder.
HOw to capture video, or even better have some example code?
Android :: How To Use AudioRecord And AudioTrack?
Apr 30, 2009I 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 RelatedAndroid :: MediaRecorder - MediaPlayer Simultaneous Use
Apr 16, 2010With reference to this discussion, does this mean that simultaneous Record and Playback with Mediarecorder and Mediaplayer is not possible at this point?
View 3 Replies View RelatedAndroid :: How To Get The Video Stream From MediaRecorder
Jul 10, 2009I want to get the stream and send it to server directly by using MediaRecorder.
Actually, I am able to record the video,and able to store it into sdcard. Now I want to it to stream (live stream) to server rather than storing it.
Android :: MediaRecorder Buffers 1 Second Of Video
Aug 30, 2010I'm using MediaRecorder.setOutputFile(FileDescriptor fd) over a UNIX socket, so that local code on the device can see the encoded stream in real time (for video streaming out).
What I observed is that the encoder doesn't write encoded frames continuously, when they are produced, but by "bursts", exactly one second apart. I tried both containers (THREE_GPP and MPEG_4) and all three available codecs (MPEG_4_SP, H263, H264), the behavior is always the same. This one-second period is notably unrelated to framerate or bitrate, so it is not flushing by size; rather, it seems to be flushing by time (possibly to mask SD card write overheads ? Bummer, I 'm not using the SD here !). Is it a known limitation ? Is there a known workaround ?
Android :: MediaRecorder Sound Quality
Feb 11, 2009Is anyone else experiencing poor playback quality on files recorded with MediaRecorder? Is there a way to improve this?
View 4 Replies View RelatedAndroid :: Prepare Failed In MediaRecorder / Way To Fix
Jul 3, 2009I am trying to develop an application with Android 1.5(cupcake_r1) for a week but always get an error reported in prepare of MediaRecorder. Can anybody help me to figure out the problem I got in the code below:
PS. In order to figure out the problem, I suppressed the audio recording, and the SDcard is installed in the phone.code...
Android :: How To Know Whether A MediaRecorder Is In Running State Or Not
Aug 11, 2010I wrote a code to record audio of call conversation using MediaRecorder.
how can i know whether a MediaRecorder is in running state or not, to stop the recording.
like
CODE:............
Above code is just an example.. If you do not understand my question, please tell me.. i will explain clearly with actual code..
What all i want to know is "In which state the MediaRecorder is?" -> recording/released/prepared/initial/etc..
Android : MediaRecorder Output Padded - How To Fix?
Oct 27, 2010When I record audio with the MediaRecorder, I am consistently getting .65 seconds of dead space before the recording starts. It appears as if the file gets passed for some reason. Does anyone know why and better yet, how to eliminate this?
View 2 Replies View RelatedAndroid :: Synchronizing AudioTrack And AudioRecord
Jan 21, 2010My 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 RelatedAndroid :: How To Add Own Audio Codec To AudioRecord?
Mar 10, 2010I 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 RelatedAndroid :: AudioRecord Is Not Working On Emulator
Nov 11, 2010I 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 RelatedAndroid :: AudioRecord On Emulator With Frequency 8 KHz
Mar 25, 2010I'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 RelatedAndroid :: AudioRecord On Samsung Moment
Sep 25, 2010We 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?
Android :: Keep MediaRecorder Keeps Recording After An Orientation Change?
Oct 12, 2010Can you please tell me how can I keep the MediaRecorder keeps recording after an orientation change? I try looking into source code of packages/apps/SoundRecorder/src/com/android/soundrecorder/Recorder.java, I don't see it handles that cases.
View 1 Replies View RelatedAndroid :: How Can I Get Amplitude Volume / When Recording With AudioRecord?
Apr 6, 2010How can I get the amplitude/volume when recording with AudioRecord?
View 2 Replies View RelatedMotorola :: Android AudioRecord Fails To Initialize
Nov 12, 2010I'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 RelatedAndroid :: AudioRecord Producing No Sound Data
Dec 6, 2009Here 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,......
Android :: AudioRecord Class To Analize Raw Pcm Bytes As It Comes In The Mic
May 27, 2010I 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
Android :: Improper Audio Format While Using AudioRecord API / What To Do?
Oct 12, 2010I 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...
View 3 Replies View Related