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Type: Posts; User: gkasteng

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  1. Re: embedded audio acceleration with android ndk

    Regarding your specific question on echo cancellation:

    Android native audio based on OpenSL ES 1.0.1, in NDK, does not currently expose controls for echo cancellation. The Android team is aware...
  2. Re: How to get the pixel-data of a (MP4) video stream ?

    If you set the sink to a surface texture rather than a surface, you should be able to read out the pixels using OpenGL ES. This will only work if the video content is not DRM-protected. For...
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    Re: android NDK r7c, Content Pipes

    As of Android 4.0 (ICS), the Android Native Development Kit ("NDK") includes a new native media API based on OpenMAX AL 1.0.1. However it is not yet a full implementation of any of the Khronos Group...
  4. Re: Recording audio by multiple processes on Android

    The Android native audio APIs based on OpenSL ES 1.0.1 do not support priorities and preemption. I am not aware of a way to do what you're proposing. It could have privacy/security issues.
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    Re: buffer enqueue question

    The buffer is owned by the application, and Enqueue merely saves a pointer to the data in the queue. After the callback indicating the buffer is complete, then the pointer is no longer in the queue...
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    Re: Can openSL ES 1.1 be ported on Android 2.3?

    This topic is outside the scope of the Khronos discussion board. I suggest you look at the Android-specific mailing lists and web page, especially these:
    ...
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    Re: About data size filled in the buffer

    As you have noted, this information is not available in OpenSL ES 1.0.1. This was one of the reasons for the modification to the buffer queue APIs in OpenSL ES 1.1. As a possible workaround, you...
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    Re: SLVisualizationtItf

    That interface is not supported by the Android native audio APIs based on OpenSL ES 1.0.1.
    For a list of supported interfaces in the Android implementation, please install the Android NDK and then...
  9. Re: #define XA_VIDEOPROFILE_MPEG4_ ? ((XAuint32) 0x000000

    As you have noted, that is not a registered profile value.
    I suspect that the OEM/vendor has made a proprietary customization
    to the implementation.
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