AudioTrack non-blocking write
Bug 7531968
Change-Id: I6d0e79fa8cab5b6eb36bcc34977f4cf0d7eec8ea
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index d0df710..7816917 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -556,8 +556,11 @@
* WOULD_BLOCK when obtainBuffer() returns same, or
* AudioTrack was stopped during the write
* or any other error code returned by IAudioTrack::start() or restoreTrack_l().
+ * Default behavior is to only return until all data has been transferred. Set 'blocking' to
+ * false for the method to return immediately without waiting to try multiple times to write
+ * the full content of the buffer.
*/
- ssize_t write(const void* buffer, size_t size);
+ ssize_t write(const void* buffer, size_t size, bool blocking = true);
/*
* Dumps the state of an audio track.
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index 5c62260..3184902 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -1270,7 +1270,7 @@
// -------------------------------------------------------------------------
-ssize_t AudioTrack::write(const void* buffer, size_t userSize)
+ssize_t AudioTrack::write(const void* buffer, size_t userSize, bool blocking)
{
if (mTransfer != TRANSFER_SYNC || mIsTimed) {
return INVALID_OPERATION;
@@ -1289,7 +1289,8 @@
while (userSize >= mFrameSize) {
audioBuffer.frameCount = userSize / mFrameSize;
- status_t err = obtainBuffer(&audioBuffer, &ClientProxy::kForever);
+ status_t err = obtainBuffer(&audioBuffer,
+ blocking ? &ClientProxy::kForever : &ClientProxy::kNonBlocking);
if (err < 0) {
if (written > 0) {
break;