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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_MIRRORING_SERVICE_MIRROR_SETTINGS_H_
#define COMPONENTS_MIRRORING_SERVICE_MIRROR_SETTINGS_H_
#include "base/component_export.h"
#include "base/time/time.h"
#include "media/capture/video_capture_types.h"
#include "media/cast/cast_config.h"
namespace media {
class AudioParameters;
enum class AudioCodec;
enum class VideoCodec;
} // namespace media
namespace mirroring {
// The interval since the last video frame was received from the video source,
// before requesting a refresh frame.
inline constexpr base::TimeDelta kFrameRefreshInterval = base::Milliseconds(50);
// Default end-to-end latency. Currently adaptive latency control is disabled
// because of audio playout regressions (b/32876644).
// TODO(openscreen/44): Re-enable in port to Open Screen.
inline constexpr base::TimeDelta kDefaultPlayoutDelay = base::Milliseconds(200);
// Holds the default settings for a mirroring session. This class provides the
// audio/video configs that this sender supports. And also provides the
// audio/video constraints used for capturing.
// TODO(issuetracker.google.com/158032164): as part of migration to libcast's
// OFFER/ANSWER exchange, expose constraints here from the OFFER message.
class COMPONENT_EXPORT(MIRRORING_SERVICE) MirrorSettings {
public:
MirrorSettings();
MirrorSettings(const MirrorSettings&) = delete;
MirrorSettings& operator=(const MirrorSettings&) = delete;
~MirrorSettings();
// Get the audio/video config with given codec.
static media::cast::FrameSenderConfig GetDefaultAudioConfig(
media::AudioCodec codec);
static media::cast::FrameSenderConfig GetDefaultVideoConfig(
media::VideoCodec codec);
// Call to override the default resolution settings.
void SetResolutionConstraints(int max_width, int max_height);
void SetSenderSideLetterboxingEnabled(bool enabled);
// Get video capture constraints with the current settings.
media::VideoCaptureParams GetVideoCaptureParams();
// Get Audio capture constraints with the current settings.
media::AudioParameters GetAudioCaptureParams();
int max_width() const { return max_width_; }
int max_height() const { return max_height_; }
base::TimeDelta refresh_interval() const { return refresh_interval_; }
void set_refresh_interval(base::TimeDelta refresh_interval) {
refresh_interval_ = refresh_interval;
}
private:
const int min_width_;
const int min_height_;
int max_width_;
int max_height_;
bool enable_sender_side_letterboxing_ = true;
base::TimeDelta refresh_interval_{kFrameRefreshInterval};
};
} // namespace mirroring
#endif // COMPONENTS_MIRRORING_SERVICE_MIRROR_SETTINGS_H_
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