Media: Reject negative initial video timestamps in FFmpegDemuxer.

Media: Reject negative initial timestamps in FFmpegDemuxer.

During recent changes, it became possible for the first video buffer
timestamp in a stream to be negative. This change restores the invariant
that video buffer timestampes are non-negative, by emitting a demuxer
error in this case.

BUG=710845
Review-Url: https://codereview.chromium.org/2822063002
Cr-Commit-Position: refs/heads/master@{#465678}
Committed: https://chromium.googlesource.com/chromium/src/+/7ef29df1ba9940551cbe64afd833706799bf6034

[sandersd (OOO until July 31), 2017-04-18 00:20:37]

Description was changed from

==========
ffmpeg_demuxer: Always reject negative buffer timestamps.

BUG=710845
==========

to

==========
ffmpeg_demuxer: Always reject negative buffer timestamps.

BUG=710845
==========

[sandersd (OOO until July 31), 2017-04-18 00:20:42]

The CQ bit was checked by sandersd@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-04-18 00:21:28]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-18 01:07:00]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-04-18 01:07:01]

Dry run: Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)

[sandersd (OOO until July 31), 2017-04-18 22:47:14]

The CQ bit was checked by sandersd@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-04-18 22:47:41]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[sandersd (OOO until July 31), 2017-04-18 23:55:27]

sandersd@chromium.org changed reviewers:
+ dalecurtis@chromium.org

[DaleCurtis, 2017-04-18 23:58:52]

lgtm

[DaleCurtis, 2017-04-18 23:59:06]

Description needs some more work though.

[sandersd (OOO until July 31), 2017-04-19 00:04:05]

Description was changed from

==========
ffmpeg_demuxer: Always reject negative buffer timestamps.

BUG=710845
==========

to

==========
Media: Reject negative initial timestamps in FFmpegDemuxer.

During recent changes, it became possible for the first video buffer
timestamp in a stream to be negative. This change restores the invariant
that video buffer timestampes are non-negative, by emitting a demuxer
error in this case.

BUG=710845
==========

[commit-bot: I haz the power, 2017-04-19 00:26:18]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-04-19 00:26:19]

Dry run: This issue passed the CQ dry run.

[sandersd (OOO until July 31), 2017-04-19 18:24:29]

The CQ bit was checked by sandersd@chromium.org

[commit-bot: I haz the power, 2017-04-19 18:24:58]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-19 18:31:25]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1492626269842240,
"parent_rev": "dfd089f1bd1aa1d8512741f2a103d0b87684f2e4", "commit_rev":
"7ef29df1ba9940551cbe64afd833706799bf6034"}

[commit-bot: I haz the power, 2017-04-19 18:31:36]

Description was changed from

==========
Media: Reject negative initial timestamps in FFmpegDemuxer.

During recent changes, it became possible for the first video buffer
timestamp in a stream to be negative. This change restores the invariant
that video buffer timestampes are non-negative, by emitting a demuxer
error in this case.

BUG=710845
==========

to

==========
Media: Reject negative initial timestamps in FFmpegDemuxer.

During recent changes, it became possible for the first video buffer
timestamp in a stream to be negative. This change restores the invariant
that video buffer timestampes are non-negative, by emitting a demuxer
error in this case.

BUG=710845

Review-Url: https://codereview.chromium.org/2822063002
Cr-Commit-Position: refs/heads/master@{#465678}
Committed:
https://chromium.googlesource.com/chromium/src/+/7ef29df1ba9940551cbe64afd833...
==========

[commit-bot: I haz the power, 2017-04-19 18:31:36]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/7ef29df1ba9940551cbe64afd833...