roman10
Posts by: roman10
Property animation is introduced in Android 3.0 Honeycomb. A whole new set of APIs comes with the android.animation package (The view animation is exposed through android.view.animation package), which makes animation in Android more flexible and powerful.
1. Limitation of View Animation System
The property animation system is introduced to tackle the limitations of [...]
Note: Android NDK Cookbook ebook 40% discount with promotion code MREANC40 at Packt Publishing. The promotion code is valid until 15th June.
Finally, my first book Android Native Development Kit (NDK) Cookbook is published. I started writing this book from Jun 2012, and the book is published on Mar 26 2013. It’s almost 10 [...]
This post discusses how to record raw audio (PCM) and save it to wave file on Android. If you’re not familiar with WAVE audio file format, please refer to a previous post, WAVE Audio File Format.
The post is a follow up post for Record PCM Audio on Android. The [...]
This post discusses how to record PCM audio on Android with the android.media.AudioRecord class. If you’re not familiar with PCM, please read a previous post PCM Audio Format.
For the source code, please refer to AndroidPCMRecorder.
1. State Transition
The source code records the PCM audio with PcmAudioRecorder.java, which [...]
WAV (Waveform Audio File Format, also known as WAVE) is a commonly used audio file format for storing raw audio samples on Windows. It follows the RIFF (Resource Interchange File Format) generic format.
0. The Format
A wave file is a RIFF file with a “WAVE” chunk. The WAVE chunk consists of two [...]
Several months ago, my friend asks my help to convert a video to an animated gif so it can be shared on a social network. I googled a little bit and managed to do it with a few command line tools on Linux. It’s not difficult but it can be troublesome, especially for non-tech people. [...]
This is follow up post on Selective Decoding, my master thesis project. You can get the main idea of selective decoding at previous post. This post simply provides some resources related to the project.
I’ve upload two videos to YouTube demonstrating how selective decoding works.
Selective Decoding without Zoom Selective Decoding with [...]
Selenium is a browser automation framework, which can be used for automating web application testing, crawling web pages etc. For a quick start guide, one can refer to http://code.google.com/p/selenium/wiki/GettingStarted.
This post gives an example of reusing an existing HTTP session in firefox browser with Selenium. The example is based on Selenium version 2.26.0. [...]
Pulse Code Modulation (PCM) is a method to represent sampled analog signals in digital form, which is the standard form for digital audio representation in computers. In order to convert an analog signal to PCM, two steps are required. sampling: the magnitude of the analog signal are sampled regularly at uniform intervals. quantization: the value [...]
This is a follow up post of the Part 1 An Intro to ELF File Format.
Sections
We’ve seen the section headers in section header table above, now we discuss sections in detail.
Below are a list of commonly seen section types. (Note that this is not a complete list)
NULL: [...]
40% Discount on My Book — Android NDK Cookbook
Android NDK Cookbook ebook 40% discount with promotion code MREANC40 at Packt Publishing The promotion code is valid until 15th June.Categories
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