61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AV_SYNC_SETTINGS_H
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#define ANDROID_AV_SYNC_SETTINGS_H
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namespace android {
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enum AVSyncSource : unsigned {
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// let the system decide the best sync source
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AVSYNC_SOURCE_DEFAULT = 0,
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// sync to the system clock
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AVSYNC_SOURCE_SYSTEM_CLOCK = 1,
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// sync to the audio track
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AVSYNC_SOURCE_AUDIO = 2,
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// sync to the display vsync
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AVSYNC_SOURCE_VSYNC = 3,
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AVSYNC_SOURCE_MAX,
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};
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enum AVSyncAudioAdjustMode : unsigned {
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// let the system decide the best audio adjust mode
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AVSYNC_AUDIO_ADJUST_MODE_DEFAULT = 0,
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// adjust audio by time stretching
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AVSYNC_AUDIO_ADJUST_MODE_STRETCH = 1,
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// adjust audio by resampling
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AVSYNC_AUDIO_ADJUST_MODE_RESAMPLE = 2,
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AVSYNC_AUDIO_ADJUST_MODE_MAX,
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};
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// max tolerance when adjusting playback speed to desired playback speed
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#define AVSYNC_TOLERANCE_MAX 1.0f
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struct AVSyncSettings {
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AVSyncSource mSource;
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AVSyncAudioAdjustMode mAudioAdjustMode;
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float mTolerance;
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AVSyncSettings()
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: mSource(AVSYNC_SOURCE_DEFAULT),
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mAudioAdjustMode(AVSYNC_AUDIO_ADJUST_MODE_DEFAULT),
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mTolerance(.044f) { }
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};
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} // namespace android
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// ---------------------------------------------------------------------------
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#endif // ANDROID_AV_SYNC_SETTINGS_H
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