917187 - MozCaptureStream fail to work for local files

Status: NEW

(Core :: Audio/Video: MediaStreamGraph, defect, P3)

Description

[JW Wang [:jwwang] [:jw_wang]]

Attachment: sample.tar.gz

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36

Steps to reproduce:

1. extract the tar
2. open test_captureStream.html
3. press the button "capture"
4. press the play button of the first audio element
5. press the play button of the second audio element


Actual results:

Music is not played.


Expected results:

Music should be played normally.

Comment 1

[JW Wang [:jwwang] [:jw_wang]]

Attachment: sample.tar.gz

Comment 2

[JW Wang [:jwwang] [:jw_wang]]

The sample fails for mDecoder->IsSameOriginMedia() returns false in MediaDecoderStateMachine::SendStreamData(). That is, sample.ogg and test_captureStream.html are regarded as different origins for file scheme.

Is this a bug or intended to be?

As it said in https://developer.mozilla.org/en-US/docs/Same-origin_policy_for_file:_URIs, a file can read another file only if the parent directory of the originating file is an ancestor directory of the target file. It is weird for this sample to work normally on web but fail on local side.

Comment 3

[Bulk Bug Changes for mreavy's org]

Mass change P2->P3 to align with new Mozilla triage process.