Android VideoRendererGui: Make deep copy of incoming texture frames

Android VideoRendererGui: Make deep copy of incoming texture frames

VideoRendererGui may need to render incoming frames multiple times. We currently call VideoRenderer.renderFrameDone() while we still hold references to the OES texture. This CL makes a deep copy of the OES texture before calling renderFrameDone(). This will truly release the dependency to the incoming frame, so that video textures sources can rely on the renderFrameDone() callback.

This CL is a part of the plan in https://codereview.webrtc.org/1357923002/.

The texture copy doesn't cause any measurable performance difference on a Nexus 5 using VideoRendererGui in a AppRTCDemo loopback call.

BUG=webrtc:4993
TEST=Revert "Enable SurfaceViewRenderer for AppRTCDemo" https://codereview.webrtc.org/1356603004/ and try AppRTCDemo.
R=perkj@webrtc.org

Committed: https://crrev.com/bc0938e8e7db590b6c01f19e57a3418a9cd52523
Cr-Commit-Position: refs/heads/master@{#10157}

[magjed_webrtc, 2015-10-02 14:41:29]

magjed@webrtc.org changed reviewers:
+ perkj@webrtc.org

[magjed_webrtc, 2015-10-02 14:43:05]

perkj - Please take a look.

[perkj_webrtc, 2015-10-02 15:34:58]

On 2015/10/02 14:43:05, magjed_webrtc wrote:
> perkj - Please take a look.

lgtm

[magjed_webrtc, 2015-10-03 15:30:18]

Committed patchset #1 (id:1) manually as
bc0938e8e7db590b6c01f19e57a3418a9cd52523 (presubmit successful).

[commit-bot: I haz the power, 2015-10-03 15:30:21]

Patchset 1 (id:??) landed as
https://crrev.com/bc0938e8e7db590b6c01f19e57a3418a9cd52523
Cr-Commit-Position: refs/heads/master@{#10157}