tree 74e43399d79b3b6e8ad431cabcaf364dd5dd7499
parent 920d30bc743b76d30c6cae7ad4c97af2e6c24e4c
author aleloi <aleloi@webrtc.org> 1476998679 -0700
committer Commit bot <commit-bot@chromium.org> 1476998686 +0000

Move audio frame memory handling inside AudioMixer.

Simplify the AudioMixer::Source interface and update the mixer
implementation to the new interface.

Instead of asking a mixer source to provide a pointer to an AudioFrame
during each mixing iteration, a mixer should supply a pointer to its
own AudioFrame.

This simplifies lifetime issues as sources do not give away an
internal pointer.

Implementation: when an audio source is added, the mixer allocates a
new AudioFrame. The audio frame is kept together in the internal class
SourceStatus together with the audio source pointer until the source
is removed.

NOTRY=True
BUG=webrtc:6346

Review-Url: https://codereview.webrtc.org/2420913002
Cr-Commit-Position: refs/heads/master@{#14713}