AudioPolicy: several spatializer output management fixes
Apply several fixes for spatializer output management when
the spatializer can be attached to two hardware modules (for instance
the primary and Bluetooth hardware modules).
- in getSpatializerOutput() open the output with
openOutputWithProfileAndDevice() to properly create the duplicating
output if needed and handle dynamic audio profiles.
- in openOutputWithProfileAndDevice(), do not open a duplicating output
for outputs opened on the primary module.
- in closeOutput(), clear mSpatializerOutput if this is the output being
closed.
- Allow canBeSpatialized() to ignore config matching with opened mSpatializerOutput
when not required.
- Force multichannel mixer mask in SwAudioOutputDescriptor::open() when
opening a spatializer output and the mixer config is not specified.
Bug: 210803914
Test: spatializer over Bluetooth A2DP
Change-Id: I1c5ca3ce0a230d674f3a22fcb1fe1d904665efe9
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index bdeba3d..30ca9b3 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -358,7 +358,9 @@
virtual bool canBeSpatialized(const audio_attributes_t *attr,
const audio_config_t *config,
- const AudioDeviceTypeAddrVector &devices) const;
+ const AudioDeviceTypeAddrVector &devices) const {
+ return canBeSpatializedInt(attr, config, devices);
+ }
virtual status_t getSpatializerOutput(const audio_config_base_t *config,
const audio_attributes_t *attr,
@@ -964,6 +966,30 @@
const DeviceVector &devices,
audio_io_handle_t *output);
+ /**
+ * @brief Queries if some kind of spatialization will be performed if the audio playback
+ * context described by the provided arguments is present.
+ * The context is made of:
+ * - The audio attributes describing the playback use case.
+ * - The audio configuration describing the audio format, channels, sampling rate ...
+ * - The devices describing the sink audio device selected for playback.
+ * All arguments are optional and only the specified arguments are used to match against
+ * supported criteria. For instance, supplying no argument will tell if spatialization is
+ * supported or not in general.
+ * @param attr audio attributes describing the playback use case
+ * @param config audio configuration describing the audio format, channels, sample rate...
+ * @param devices the sink audio device selected for playback
+ * @param allowCurrentOutputReconfig if true, the result will be considering it is possible
+ * to close and reopen an existing spatializer output stream to match the requested
+ * criteria. If false, the criteria must be compatible with the opened sptializer
+ * output.
+ * @return true if spatialization is possible for this context, false otherwise.
+ */
+ virtual bool canBeSpatializedInt(const audio_attributes_t *attr,
+ const audio_config_t *config,
+ const AudioDeviceTypeAddrVector &devices,
+ bool allowCurrentOutputReconfig = true) const;
+
sp<IOProfile> getSpatializerOutputProfile(const audio_config_t *config,
const AudioDeviceTypeAddrVector &devices) const;
@@ -1059,8 +1085,20 @@
bool areAllActiveTracksRerouted(const sp<SwAudioOutputDescriptor>& output);
- sp<SwAudioOutputDescriptor> openOutputWithProfileAndDevice(const sp<IOProfile>& profile,
- const DeviceVector& devices);
+ /**
+ * @brief Opens an output stream from the supplied IOProfile and route it to the
+ * supplied audio devices. If a mixer config is specified, it is forwarded to audio
+ * flinger. If not, a default config is derived from the output stream config.
+ * Also opens a duplicating output if needed and queries the audio HAL for supported
+ * audio profiles if the IOProfile is dynamic.
+ * @param[in] profile IOProfile to use as template
+ * @param[in] devices initial route to apply to this output stream
+ * @param[in] mixerConfig if not null, use this to configure the mixer
+ * @return an output descriptor for the newly opened stream or null in case of error.
+ */
+ sp<SwAudioOutputDescriptor> openOutputWithProfileAndDevice(
+ const sp<IOProfile>& profile, const DeviceVector& devices,
+ const audio_config_base_t *mixerConfig = nullptr);
bool isOffloadPossible(const audio_offload_info_t& offloadInfo,
bool durationIgnored = false);