v109 Allow playing audio in background

License: GPL-3.0-only - https://spdx.org/licenses/GPL-3.0-only.html

---

 .../renderer/platform/media/web_media_player_impl.cc | 12 +++++++++++-

 .../renderer/platform/media/web_media_player_impl.cc  | 11 ++++++++++-

 .../renderer/platform/media/web_media_player_impl.h   |  3 +++

 2 files changed, 14 insertions(+), 1 deletion(-)

 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/third_party/blink/renderer/platform/media/web_media_player_impl.cc b/third_party/blink/renderer/platform/media/web_media_player_impl.cc

--- a/third_party/blink/renderer/platform/media/web_media_player_impl.cc

+++ b/third_party/blink/renderer/platform/media/web_media_player_impl.cc

@@ -1226,6 +1226,12 @@ bool WebMediaPlayerImpl::HasAudio() const {

@@ -1237,6 +1237,12 @@ bool WebMediaPlayerImpl::HasAudio() const {

   return pipeline_metadata_.has_audio;

 }

 void WebMediaPlayerImpl::EnabledAudioTracksChanged(

     const WebVector<WebMediaPlayer::TrackId>& enabledTrackIds) {

   DCHECK(main_task_runner_->BelongsToCurrentThread());

@@ -3627,7 +3633,11 @@ bool WebMediaPlayerImpl::ShouldPausePlaybackWhenHidden() const {

@@ -3662,7 +3668,10 @@ bool WebMediaPlayerImpl::ShouldPausePlaybackWhenHidden() const {

           : HasAudio();

   // Audio only stream is allowed to play when in background.

   // TODO: We should check IsBackgroundOptimizationCandidate here. But we need

   // to move the logic of checking video frames out of that function.

-  if (!HasVideo())

+

-  if (!HasVideo() && preserve_audio)

+  //pipeline_metadata_.has_video is true for MediaPlayerRenderer,

+  //see media/base/pipeline_metadata.h. This is a workaround to allow audio

+  //streams be played in background.

+  if (!HasVideoNonEmptySize())

+  if (!HasVideoNonEmptySize() && preserve_audio)

     return false;

   if (using_media_player_renderer_ &&

   // MediaPlayer always signals audio and video, so use an empty natural size to

diff --git a/third_party/blink/renderer/platform/media/web_media_player_impl.h b/third_party/blink/renderer/platform/media/web_media_player_impl.h

--- a/third_party/blink/renderer/platform/media/web_media_player_impl.h

+++ b/third_party/blink/renderer/platform/media/web_media_player_impl.h

@@ -195,6 +195,9 @@ class PLATFORM_EXPORT WebMediaPlayerImpl

@@ -197,6 +197,9 @@ class PLATFORM_EXPORT WebMediaPlayerImpl

   bool HasVideo() const override;

   bool HasAudio() const override;