AudioPolicyManager: return output for audio attributes
In AudioPolicyManager, support querying an output
or playback strategy for audio attributes,
instead of a stream type,
In AudioTrack creation, use the output returned
for the track's attributes.
Change-Id: I0fef05845ba676404775e2e338c10e6a96237268
diff --git a/media/libmedia/IAudioPolicyService.cpp b/media/libmedia/IAudioPolicyService.cpp
index 77d131b..41a9065 100644
--- a/media/libmedia/IAudioPolicyService.cpp
+++ b/media/libmedia/IAudioPolicyService.cpp
@@ -64,7 +64,8 @@
RELEASE_AUDIO_PATCH,
LIST_AUDIO_PATCHES,
SET_AUDIO_PORT_CONFIG,
- REGISTER_CLIENT
+ REGISTER_CLIENT,
+ GET_OUTPUT_FOR_ATTR
};
class BpAudioPolicyService : public BpInterface<IAudioPolicyService>
@@ -155,6 +156,36 @@
return static_cast <audio_io_handle_t> (reply.readInt32());
}
+ virtual audio_io_handle_t getOutputForAttr(
+ const audio_attributes_t *attr,
+ uint32_t samplingRate,
+ audio_format_t format,
+ audio_channel_mask_t channelMask,
+ audio_output_flags_t flags,
+ const audio_offload_info_t *offloadInfo)
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
+ if (attr == NULL) {
+ ALOGE("Writing NULL audio attributes - shouldn't happen");
+ return (audio_io_handle_t) 0;
+ }
+ data.write(attr, sizeof(audio_attributes_t));
+ data.writeInt32(samplingRate);
+ data.writeInt32(static_cast <uint32_t>(format));
+ data.writeInt32(channelMask);
+ data.writeInt32(static_cast <uint32_t>(flags));
+ // hasOffloadInfo
+ if (offloadInfo == NULL) {
+ data.writeInt32(0);
+ } else {
+ data.writeInt32(1);
+ data.write(offloadInfo, sizeof(audio_offload_info_t));
+ }
+ remote()->transact(GET_OUTPUT_FOR_ATTR, data, &reply);
+ return static_cast <audio_io_handle_t> (reply.readInt32());
+ }
+
virtual status_t startOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
@@ -614,6 +645,30 @@
return NO_ERROR;
} break;
+ case GET_OUTPUT_FOR_ATTR: {
+ CHECK_INTERFACE(IAudioPolicyService, data, reply);
+ audio_attributes_t *attr = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
+ data.read(attr, sizeof(audio_attributes_t));
+ uint32_t samplingRate = data.readInt32();
+ audio_format_t format = (audio_format_t) data.readInt32();
+ audio_channel_mask_t channelMask = data.readInt32();
+ audio_output_flags_t flags =
+ static_cast <audio_output_flags_t>(data.readInt32());
+ bool hasOffloadInfo = data.readInt32() != 0;
+ audio_offload_info_t offloadInfo;
+ if (hasOffloadInfo) {
+ data.read(&offloadInfo, sizeof(audio_offload_info_t));
+ }
+ audio_io_handle_t output = getOutputForAttr(attr,
+ samplingRate,
+ format,
+ channelMask,
+ flags,
+ hasOffloadInfo ? &offloadInfo : NULL);
+ reply->writeInt32(static_cast <int>(output));
+ return NO_ERROR;
+ } break;
+
case START_OUTPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t output = static_cast <audio_io_handle_t>(data.readInt32());