Add standby mode for aaudio service stream.
When the stream is stopped, everything will remain open but just stop
writing data. But this will keep the DSP running and using power
until the stream is closed.
To resolve this issue, the solution is to put the stream into standby
mode so that the HAL can release the corresponding resource.
When the HAL releases the resource, the shared file descriptor will also
be released. In that case, when the stream is restarted, AAudioService
needs to recreate shared buffer and the client needs to replace the new
shared buffer.
Test: atest AAudioTests
Test: test_steal_exclusive
Bug: 201000721
Bug: 196394385
Bug: 167345722
Bug: 208619472
Change-Id: Ib4f98e7aee72c2e56acd7f2f0ac378a94ec26241
diff --git a/media/libaaudio/src/binding/AudioEndpointParcelable.h b/media/libaaudio/src/binding/AudioEndpointParcelable.h
index 544aa92..5d2c38f 100644
--- a/media/libaaudio/src/binding/AudioEndpointParcelable.h
+++ b/media/libaaudio/src/binding/AudioEndpointParcelable.h
@@ -52,7 +52,20 @@
*/
int32_t addFileDescriptor(const android::base::unique_fd& fd, int32_t sizeInBytes);
+ /**
+ * Close current data file descriptor. The duplicated file descriptor will be close.
+ */
+ void closeDataFileDescriptor();
+
+ /**
+ * Update current data file descriptor with given endpoint parcelable.
+ * @param endpointParcelable an endpoint parcelable that contains new data file
+ * descriptor information
+ */
+ void updateDataFileDescriptor(AudioEndpointParcelable* endpointParcelable);
+
aaudio_result_t resolve(EndpointDescriptor *descriptor);
+ aaudio_result_t resolveDataQueue(RingBufferDescriptor *descriptor);
aaudio_result_t close();