Support setting preferred mixer attributes for USB devices.
This is part of USB audio improvement. With setting mixer attributes,
apps will be able to choose the best mixer attributes for their
playback. This can help improve latency and audio experience.
Bug: 239435816
Test: atest AudioManagerTest
Test: atest audiopolicy_tests
Test: Manually
Change-Id: Ifd1e8e35f94dab309eabe879d20ae0358038a4bf
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index fa9239f..7309cad 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -34,6 +34,7 @@
#include <system/audio.h>
#include <android/media/GetInputForAttrResponse.h>
+#include <android/media/AudioMixerAttributesInternal.h>
#define VALUE_OR_RETURN_BINDER_STATUS(x) \
({ auto _tmp = (x); \
@@ -2538,6 +2539,84 @@
return af->getAAudioHardwareBurstMinUsec();
}
+status_t AudioSystem::getSupportedMixerAttributes(
+ audio_port_handle_t portId, std::vector<audio_mixer_attributes_t> *mixerAttrs) {
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == nullptr) {
+ return PERMISSION_DENIED;
+ }
+
+ int32_t portIdAidl = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_handle_t_int32_t(portId));
+ std::vector<media::AudioMixerAttributesInternal> _aidlReturn;
+ RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
+ aps->getSupportedMixerAttributes(portIdAidl, &_aidlReturn)));
+ *mixerAttrs = VALUE_OR_RETURN_STATUS(
+ convertContainer<std::vector<audio_mixer_attributes_t>>(
+ _aidlReturn,
+ aidl2legacy_AudioMixerAttributesInternal_audio_mixer_attributes_t));
+ return OK;
+}
+
+status_t AudioSystem::setPreferredMixerAttributes(const audio_attributes_t *attr,
+ audio_port_handle_t portId,
+ uid_t uid,
+ const audio_mixer_attributes_t *mixerAttr) {
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == nullptr) {
+ return PERMISSION_DENIED;
+ }
+
+ media::AudioAttributesInternal attrAidl = VALUE_OR_RETURN_STATUS(
+ legacy2aidl_audio_attributes_t_AudioAttributesInternal(*attr));
+ media::AudioMixerAttributesInternal mixerAttrAidl = VALUE_OR_RETURN_STATUS(
+ legacy2aidl_audio_mixer_attributes_t_AudioMixerAttributesInternal(*mixerAttr));
+ int32_t uidAidl = VALUE_OR_RETURN_STATUS(legacy2aidl_uid_t_int32_t(uid));
+ int32_t portIdAidl = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_handle_t_int32_t(portId));
+
+ return statusTFromBinderStatus(
+ aps->setPreferredMixerAttributes(attrAidl, portIdAidl, uidAidl, mixerAttrAidl));
+}
+
+status_t AudioSystem::getPreferredMixerAttributes(
+ const audio_attributes_t *attr,
+ audio_port_handle_t portId,
+ std::optional<audio_mixer_attributes_t> *mixerAttr) {
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == nullptr) {
+ return PERMISSION_DENIED;
+ }
+
+ media::AudioAttributesInternal attrAidl = VALUE_OR_RETURN_STATUS(
+ legacy2aidl_audio_attributes_t_AudioAttributesInternal(*attr));
+ int32_t portIdAidl = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_handle_t_int32_t(portId));
+ std::optional<media::AudioMixerAttributesInternal> _aidlReturn;
+ RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(
+ aps->getPreferredMixerAttributes(attrAidl, portIdAidl, &_aidlReturn)));
+
+ if (_aidlReturn.has_value()) {
+ *mixerAttr = VALUE_OR_RETURN_STATUS(
+ aidl2legacy_AudioMixerAttributesInternal_audio_mixer_attributes_t(
+ _aidlReturn.value()));
+ }
+ return NO_ERROR;
+}
+
+status_t AudioSystem::clearPreferredMixerAttributes(const audio_attributes_t *attr,
+ audio_port_handle_t portId,
+ uid_t uid) {
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == nullptr) {
+ return PERMISSION_DENIED;
+ }
+
+ media::AudioAttributesInternal attrAidl = VALUE_OR_RETURN_STATUS(
+ legacy2aidl_audio_attributes_t_AudioAttributesInternal(*attr));
+ int32_t uidAidl = VALUE_OR_RETURN_STATUS(legacy2aidl_uid_t_int32_t(uid));
+ int32_t portIdAidl = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_handle_t_int32_t(portId));
+ return statusTFromBinderStatus(
+ aps->clearPreferredMixerAttributes(attrAidl, portIdAidl, uidAidl));
+}
+
// ---------------------------------------------------------------------------
int AudioSystem::AudioPolicyServiceClient::addAudioPortCallback(