Always use 48kHz for OPUS decoding.

Always use 48kHz for OPUS decoding.

Per the specification OPUS should always use 48kHz for decoding.

BUG=392827
TEST=new unittests

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282989

[DaleCurtis, 2014-07-11 22:19:57]

FYI: We need this in FFmpegCommon instead of in the OPUS decoder as it'll be
used to construct the renderer and other associated bits.  So we can't just
blindly set 48kHz within the decoder.

[scherkus (not reviewing), 2014-07-11 23:06:12]

pipeline integration test?

[DaleCurtis, 2014-07-11 23:27:54]

Too lazy to rebuild my encoding environment right now, added a FFmpegCommonTest.

[scherkus (not reviewing), 2014-07-11 23:52:27]

It's a good start ... but we should still land a pipeline integration test to
verify the fix for both FFmpegDemuxer and MSE cases.

For example, it looks like media/formats/webm/webm_audio_client.cc is using the
container sampling frequency for Opus

[DaleCurtis, 2014-07-12 01:12:20]

Tests everywhere!

[scherkus (not reviewing), 2014-07-14 16:38:52]

thanks for writing tests!

lgtm

[DaleCurtis, 2014-07-14 16:46:57]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2014-07-14 16:47:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dalecurtis@chromium.org/390543002/40001

[commit-bot: I haz the power, 2014-07-14 18:48:39]

Change committed as 282989