stagefright: support setting/getting playback/sync config in MediaSync
Bug: 18249558
Bug: 19666434
Bug: 20057497
Change-Id: I5868b17423d7c20cfaf4a399f3eb67bfba440605
diff --git a/include/media/AVSyncSettings.h b/include/media/AVSyncSettings.h
new file mode 100644
index 0000000..10e3bcc
--- /dev/null
+++ b/include/media/AVSyncSettings.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_AV_SYNC_SETTINGS_H
+#define ANDROID_AV_SYNC_SETTINGS_H
+
+namespace android {
+
+enum AVSyncSource : unsigned {
+ // let the system decide the best sync source
+ AVSYNC_SOURCE_DEFAULT = 0,
+ // sync to the system clock
+ AVSYNC_SOURCE_SYSTEM_CLOCK = 1,
+ // sync to the audio track
+ AVSYNC_SOURCE_AUDIO = 2,
+ // sync to the display vsync
+ AVSYNC_SOURCE_VSYNC = 3,
+ AVSYNC_SOURCE_MAX,
+};
+
+enum AVSyncAudioAdjustMode : unsigned {
+ // let the system decide the best audio adjust mode
+ AVSYNC_AUDIO_ADJUST_MODE_DEFAULT = 0,
+ // adjust audio by time stretching
+ AVSYNC_AUDIO_ADJUST_MODE_STRETCH = 1,
+ // adjust audio by resampling
+ AVSYNC_AUDIO_ADJUST_MODE_RESAMPLE = 2,
+ AVSYNC_AUDIO_ADJUST_MODE_MAX,
+};
+
+// max tolerance when adjusting playback speed to desired playback speed
+#define AVSYNC_TOLERANCE_MAX 1.0f
+
+struct AVSyncSettings {
+ AVSyncSource mSource;
+ AVSyncAudioAdjustMode mAudioAdjustMode;
+ float mTolerance;
+ AVSyncSettings()
+ : mSource(AVSYNC_SOURCE_DEFAULT),
+ mAudioAdjustMode(AVSYNC_AUDIO_ADJUST_MODE_DEFAULT),
+ mTolerance(.044f) { }
+};
+
+} // namespace android
+
+// ---------------------------------------------------------------------------
+
+#endif // ANDROID_AV_SYNC_SETTINGS_H