1033900 - Improvement of media threading model on B2G.

Status: RESOLVED WONTFIX

(Core :: Audio/Video: Playback, defect)

Description

[Bruce Sun [:brsun]]

This is a meta bug for improvement of media threading model on B2G:
 - Integrate android::MediaCodec into gecko.
 - Non-blocking data pipeline from MediaResource to MediaDecoderReader.
 - Other followup bugs.

Comment 1

[Sotaro Ikeda [:sotaro]]

When MediaCodec exposes GraphicBuffer for b2g, gecko needs to identify if MediaCodec exposes GraphicBuffers. Some devices support it, but some devices does not support it. If it is not supported, we need to use OMXCodec.

Comment 2

[Sotaro Ikeda [:sotaro]]

When we want to expose GraphicBuffer from MediaCodec, we might want to allocate some spare buffers and use them in gecko. In this case, using GonkNativeWindow and modification to ACodec about how to handle undequeued buffer like attachment 8446689 [details] [diff] [review] in Bug 1009420 might become necessary.

In this case, the modification to ACodec might conflict with current gecko's WebRTC implementation. Because current WebRTC implementation get GraphicBuffer from GonkNativeWindow.

Comment 3

[Bruce Sun [:brsun]]

Attachment: MediaCodec.odp

I found that I didn't share my original proposal for integrating MediaCodec and refining the reading mechanism of MediaResource on bugzilla. This is the original one I proposed during the media work-week (March 2014) in Taipei.