stagefright

I'm trying to encode a video from a byte array buffer and to do so I'm using MPEG4Writer API from native code. I have created my custom MediaSource class to provide the data and I'm wrapping it with OMXCodec to give it to MPEG4Writer : sp<MediaSource> mVideoEncoder = OMXCodec::Create(client.interface(), omxEncMeta, true, mVideoOutSource); mVideoEncoder->start(); mVideoOutSource is my custom MediaSource class, omxEncMeta is the following: int32_t colorFormat = OMX_COLOR_FormatYUV420SemiPlanar; int32_t width = 480; int32_t height = 360; int32_t frameRate = 24; int32_t bitRate = 500 * 1024; int32

everyone: I am new to ffmpeg. Recently I am working on project to port ffmpeg to android device. At the beginning, I compiled ffmpeg to shared libs(.so files) in a very normal way following some guides on Internet, load them into my android app. It works perfectly. Now I want ffmpeg to use libstagefright to fulfill HW decoding. The problem is, I can compile the .so libs, but when I launch my app and load those .so libs, there is always a java.lang.UnsatisfiedLinkError: Cannot load library: reloc_library[1314]: 114 cannot locate '_ZN7android11MediaBufferC1Ej' I stuck there for a few days. Does

I'm passing a SurfaceView surface from Java to JNI where I obtain the native window from that surface. Stagefright decodes h264 frames from an mp4 file. During the decoding process I call ANativeWindow::queueBuffer() in order to send decoded frames to be rendered. There are no errors on decoding or on calling queueBuffer() , all I get is a black screen. I really feel like I'm not setting up the native window properly so that when queueBuffer() is called, it is rendered to the screen. However, I can render pixels to the native window directly via memcpy. Unfortunately, after I instantiate the

I am developing H264 H/W accelerated video decoder for android. So far, I've come around with some libraries MediaCodec , Stagefright , OpenMax IL , OpenMax AL and FFmpeg . After a bit research, I've found that - I found a great resource of using stagefright with FFmpeg, but I can not use FFmpeg as for its license, it is quite restrictive for distributed software. (Or possible to discard FFmpeg from this approach?) I can not use MediaCodec as its a Java API and I have to call it via the JNI from C++ layer which is relatively slow and I am not allowed. I can not use OpenMax AL as it only

I am trying to understanding how MediaCodec is used for hardware decoding. My knowledge in android internal is very limited. Here is my findings: There is a xml file which represents the codec details in the android system . device/ti/omap3evm/media_codecs.xml for an example. Which means, that If we create a codec from the Java Application with Media Codec MediaCodec codec = MediaCodec.createDecoderByType(type); It should be finding out respective coder with the help of xml file. What am I doing? I am trying to figure our which part of the code is reading xml and find the codec based on given