audioflinger: fix reused audio patch resource release
Add missing explicit release of audio HAL patch
when a patch is created reusing the same patch handle but
the source or sink devices are not on the same HW module.
Bug: 28953359
Change-Id: Ib751a4b5b2badd745f3b43e69734dd6a3e60eabe
diff --git a/services/audioflinger/PatchPanel.cpp b/services/audioflinger/PatchPanel.cpp
index 0699a15..bee17fd 100644
--- a/services/audioflinger/PatchPanel.cpp
+++ b/services/audioflinger/PatchPanel.cpp
@@ -168,12 +168,46 @@
ALOGV("createAudioPatch() removing patch handle %d", *handle);
halHandle = mPatches[index]->mHalHandle;
Patch *removedPatch = mPatches[index];
+ // free resources owned by the removed patch if applicable
+ // 1) if a software patch is present, release the playback and capture threads and
+ // tracks created. This will also release the corresponding audio HAL patches
if ((removedPatch->mRecordPatchHandle
!= AUDIO_PATCH_HANDLE_NONE) ||
(removedPatch->mPlaybackPatchHandle !=
AUDIO_PATCH_HANDLE_NONE)) {
clearPatchConnections(removedPatch);
}
+ // 2) if the new patch and old patch source or sink are devices from different
+ // hw modules, clear the audio HAL patches now because they will not be updated
+ // by call to create_audio_patch() below which will happen on a different HW module
+ if (halHandle != AUDIO_PATCH_HANDLE_NONE) {
+ audio_module_handle_t hwModule = AUDIO_MODULE_HANDLE_NONE;
+ if ((removedPatch->mAudioPatch.sources[0].type == AUDIO_PORT_TYPE_DEVICE) &&
+ ((patch->sources[0].type != AUDIO_PORT_TYPE_DEVICE) ||
+ (removedPatch->mAudioPatch.sources[0].ext.device.hw_module !=
+ patch->sources[0].ext.device.hw_module))) {
+ hwModule = removedPatch->mAudioPatch.sources[0].ext.device.hw_module;
+ } else if ((patch->num_sinks == 0) ||
+ ((removedPatch->mAudioPatch.sinks[0].type == AUDIO_PORT_TYPE_DEVICE) &&
+ ((patch->sinks[0].type != AUDIO_PORT_TYPE_DEVICE) ||
+ (removedPatch->mAudioPatch.sinks[0].ext.device.hw_module !=
+ patch->sinks[0].ext.device.hw_module)))) {
+ // Note on (patch->num_sinks == 0): this situation should not happen as
+ // these special patches are only created by the policy manager but just
+ // in case, systematically clear the HAL patch.
+ // Note that removedPatch->mAudioPatch.num_sinks cannot be 0 here because
+ // halHandle would be AUDIO_PATCH_HANDLE_NONE in this case.
+ hwModule = removedPatch->mAudioPatch.sinks[0].ext.device.hw_module;
+ }
+ if (hwModule != AUDIO_MODULE_HANDLE_NONE) {
+ ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(hwModule);
+ if (index >= 0) {
+ audio_hw_device_t *hwDevice =
+ audioflinger->mAudioHwDevs.valueAt(index)->hwDevice();
+ hwDevice->release_audio_patch(hwDevice, halHandle);
+ }
+ }
+ }
mPatches.removeAt(index);
delete removedPatch;
break;
diff --git a/services/audioflinger/PatchPanel.h b/services/audioflinger/PatchPanel.h
index e31179c..16ec278 100644
--- a/services/audioflinger/PatchPanel.h
+++ b/services/audioflinger/PatchPanel.h
@@ -62,12 +62,24 @@
struct audio_patch mAudioPatch;
audio_patch_handle_t mHandle;
+ // handle for audio HAL patch handle present only when the audio HAL version is >= 3.0
audio_patch_handle_t mHalHandle;
+ // below members are used by a software audio patch connecting a source device from a
+ // given audio HW module to a sink device on an other audio HW module.
+ // playback thread created by createAudioPatch() and released by clearPatchConnections() if
+ // no existing playback thread can be used by the software patch
sp<PlaybackThread> mPlaybackThread;
+ // audio track created by createPatchConnections() and released by clearPatchConnections()
sp<PlaybackThread::PatchTrack> mPatchTrack;
+ // record thread created by createAudioPatch() and released by clearPatchConnections()
sp<RecordThread> mRecordThread;
+ // audio record created by createPatchConnections() and released by clearPatchConnections()
sp<RecordThread::PatchRecord> mPatchRecord;
+ // handle for audio patch connecting source device to record thread input.
+ // created by createPatchConnections() and released by clearPatchConnections()
audio_patch_handle_t mRecordPatchHandle;
+ // handle for audio patch connecting playback thread output to sink device
+ // created by createPatchConnections() and released by clearPatchConnections()
audio_patch_handle_t mPlaybackPatchHandle;
};
