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Recommend not calling getTimestamp() from callback #1499

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Mar 3, 2022
Merged

Recommend not calling getTimestamp() from callback #1499

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13 changes: 13 additions & 0 deletions include/oboe/AudioStream.h
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Original file line number Diff line number Diff line change
Expand Up @@ -262,6 +262,10 @@ class AudioStream : public AudioStreamBase {
* The latency of an OUTPUT stream is generally higher than the INPUT latency
* because an app generally tries to keep the OUTPUT buffer full and the INPUT buffer empty.
*
* Note that due to issues in Android before R, we recommend NOT calling
* this method from a data callback. See this tech note for more details.
* https://github.com/google/oboe/blob/master/docs/notes/rlsbuffer.md
*
* @return a ResultWithValue which has a result of Result::OK and a value containing the latency
* in milliseconds, or a result of Result::Error*.
*/
Expand All @@ -280,6 +284,10 @@ class AudioStream : public AudioStreamBase {
* The time is based on the implementation's best effort, using whatever knowledge is available
* to the system, but cannot account for any delay unknown to the implementation.
*
* Note that due to issues in Android before R, we recommend NOT calling
* this method from a data callback. See this tech note for more details.
* https://github.com/google/oboe/blob/master/docs/notes/rlsbuffer.md
*
* @deprecated since 1.0, use AudioStream::getTimestamp(clockid_t clockId) instead, which
* returns ResultWithValue
* @param clockId the type of clock to use e.g. CLOCK_MONOTONIC
Expand All @@ -303,6 +311,11 @@ class AudioStream : public AudioStreamBase {
* The time is based on the implementation's best effort, using whatever knowledge is available
* to the system, but cannot account for any delay unknown to the implementation.
*
* Note that due to issues in Android before R, we recommend NOT calling
* this method from a data callback. See this tech note for more details.
* https://github.com/google/oboe/blob/master/docs/notes/rlsbuffer.md
*
* See
* @param clockId the type of clock to use e.g. CLOCK_MONOTONIC
* @return a FrameTimestamp containing the position and time at which a particular audio frame
* entered or left the audio processing pipeline, or an error if the operation failed.
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