AudioTrack construction with audio attributes
Store audio attributes in AudioTrack class.
When an AudioTrack is "set" with non null audio
attributes, derive a stream type that reflects
the attributes.
When an AudioTrack is "set" without attributes,
and only has a stream type, derive default
audio attributes.
Change-Id: I322b91fa9a7e193118960c5e78cdddd85d66f9ad
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index e6827ee..000185b 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -103,6 +103,10 @@
mPreviousSchedulingGroup(SP_DEFAULT),
mPausedPosition(0)
{
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_UNKNOWN;
+ mAttributes.usage = AUDIO_USAGE_UNKNOWN;
+ mAttributes.flags = 0x0;
+ strcpy(mAttributes.tags, "");
}
AudioTrack::AudioTrack(
@@ -129,7 +133,7 @@
mStatus = set(streamType, sampleRate, format, channelMask,
frameCount, flags, cbf, user, notificationFrames,
0 /*sharedBuffer*/, false /*threadCanCallJava*/, sessionId, transferType,
- offloadInfo, uid, pid);
+ offloadInfo, uid, pid, NULL /*no audio attributes*/);
}
AudioTrack::AudioTrack(
@@ -156,7 +160,7 @@
mStatus = set(streamType, sampleRate, format, channelMask,
0 /*frameCount*/, flags, cbf, user, notificationFrames,
sharedBuffer, false /*threadCanCallJava*/, sessionId, transferType, offloadInfo,
- uid, pid);
+ uid, pid, NULL /*no audio attributes*/);
}
AudioTrack::~AudioTrack()
@@ -199,7 +203,8 @@
transfer_type transferType,
const audio_offload_info_t *offloadInfo,
int uid,
- pid_t pid)
+ pid_t pid,
+ audio_attributes_t* pAttributes)
{
ALOGV("set(): streamType %d, sampleRate %u, format %#x, channelMask %#x, frameCount %zu, "
"flags #%x, notificationFrames %u, sessionId %d, transferType %d",
@@ -259,18 +264,34 @@
if (streamType == AUDIO_STREAM_DEFAULT) {
streamType = AUDIO_STREAM_MUSIC;
}
- if (uint32_t(streamType) >= AUDIO_STREAM_CNT) {
- ALOGE("Invalid stream type %d", streamType);
- return BAD_VALUE;
+
+ if (pAttributes == NULL) {
+ if (uint32_t(streamType) >= AUDIO_STREAM_CNT) {
+ ALOGE("Invalid stream type %d", streamType);
+ return BAD_VALUE;
+ }
+ setAttributesFromStreamType(streamType);
+ mStreamType = streamType;
+ } else {
+ if (!isValidAttributes(pAttributes)) {
+ ALOGE("Invalid attributes: usage=%d content=%d flags=0x%x tags=[%s]",
+ pAttributes->usage, pAttributes->content_type, pAttributes->flags,
+ pAttributes->tags);
+ }
+ // stream type shouldn't be looked at, this track has audio attributes
+ memcpy(&mAttributes, pAttributes, sizeof(audio_attributes_t));
+ setStreamTypeFromAttributes(mAttributes);
+ ALOGV("Building AudioTrack with attributes: usage=%d content=%d flags=0x%x tags=[%s]",
+ mAttributes.usage, mAttributes.content_type, mAttributes.flags, mAttributes.tags);
}
- mStreamType = streamType;
status_t status;
if (sampleRate == 0) {
- status = AudioSystem::getOutputSamplingRate(&sampleRate, streamType);
+ // TODO replace with new APM method with support for audio_attributes_t
+ status = AudioSystem::getOutputSamplingRate(&sampleRate, mStreamType);
if (status != NO_ERROR) {
ALOGE("Could not get output sample rate for stream type %d; status %d",
- streamType, status);
+ mStreamType, status);
return status;
}
}
@@ -314,7 +335,7 @@
((flags | AUDIO_OUTPUT_FLAG_DIRECT) & ~AUDIO_OUTPUT_FLAG_FAST);
}
// only allow deep buffering for music stream type
- if (streamType != AUDIO_STREAM_MUSIC) {
+ if (mStreamType != AUDIO_STREAM_MUSIC) {
flags = (audio_output_flags_t)(flags &~AUDIO_OUTPUT_FLAG_DEEP_BUFFER);
}
@@ -620,6 +641,7 @@
}
uint32_t afSamplingRate;
+ // TODO replace with new APM method with support for audio_attributes_t
if (AudioSystem::getOutputSamplingRate(&afSamplingRate, mStreamType) != NO_ERROR) {
return NO_INIT;
}
@@ -867,6 +889,7 @@
return NO_INIT;
}
+ // TODO replace with new APM method with support for audio_attributes_t
audio_io_handle_t output = AudioSystem::getOutput(mStreamType, mSampleRate, mFormat,
mChannelMask, mFlags, mOffloadInfo);
if (output == AUDIO_IO_HANDLE_NONE) {
@@ -1858,6 +1881,136 @@
return mProxy->getUnderrunFrames();
}
+void AudioTrack::setAttributesFromStreamType(audio_stream_type_t streamType) {
+ mAttributes.flags = 0x0;
+
+ switch(streamType) {
+ case AUDIO_STREAM_DEFAULT:
+ case AUDIO_STREAM_MUSIC:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_MUSIC;
+ mAttributes.usage = AUDIO_USAGE_MEDIA;
+ break;
+ case AUDIO_STREAM_VOICE_CALL:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SPEECH;
+ mAttributes.usage = AUDIO_USAGE_VOICE_COMMUNICATION;
+ break;
+ case AUDIO_STREAM_ENFORCED_AUDIBLE:
+ mAttributes.flags |= AUDIO_FLAG_AUDIBILITY_ENFORCED;
+ // intended fall through, attributes in common with STREAM_SYSTEM
+ case AUDIO_STREAM_SYSTEM:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
+ mAttributes.usage = AUDIO_USAGE_ASSISTANCE_SONIFICATION;
+ break;
+ case AUDIO_STREAM_RING:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
+ mAttributes.usage = AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE;
+ break;
+ case AUDIO_STREAM_ALARM:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
+ mAttributes.usage = AUDIO_USAGE_ALARM;
+ break;
+ case AUDIO_STREAM_NOTIFICATION:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
+ mAttributes.usage = AUDIO_USAGE_NOTIFICATION;
+ break;
+ case AUDIO_STREAM_BLUETOOTH_SCO:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SPEECH;
+ mAttributes.usage = AUDIO_USAGE_VOICE_COMMUNICATION;
+ mAttributes.flags |= AUDIO_FLAG_SCO;
+ break;
+ case AUDIO_STREAM_DTMF:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
+ mAttributes.usage = AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
+ break;
+ case AUDIO_STREAM_TTS:
+ mAttributes.content_type = AUDIO_CONTENT_TYPE_SPEECH;
+ mAttributes.usage = AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
+ break;
+ default:
+ ALOGE("invalid stream type %d when converting to attributes", streamType);
+ }
+}
+
+void AudioTrack::setStreamTypeFromAttributes(audio_attributes_t& aa) {
+ // flags to stream type mapping
+ if ((aa.flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) {
+ mStreamType = AUDIO_STREAM_ENFORCED_AUDIBLE;
+ return;
+ }
+ if ((aa.flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) {
+ mStreamType = AUDIO_STREAM_BLUETOOTH_SCO;
+ return;
+ }
+
+ // usage to stream type mapping
+ switch (aa.usage) {
+ case AUDIO_USAGE_MEDIA:
+ case AUDIO_USAGE_GAME:
+ case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY:
+ case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE:
+ mStreamType = AUDIO_STREAM_MUSIC;
+ return;
+ case AUDIO_USAGE_ASSISTANCE_SONIFICATION:
+ mStreamType = AUDIO_STREAM_SYSTEM;
+ return;
+ case AUDIO_USAGE_VOICE_COMMUNICATION:
+ mStreamType = AUDIO_STREAM_VOICE_CALL;
+ return;
+
+ case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING:
+ mStreamType = AUDIO_STREAM_DTMF;
+ return;
+
+ case AUDIO_USAGE_ALARM:
+ mStreamType = AUDIO_STREAM_ALARM;
+ return;
+ case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE:
+ mStreamType = AUDIO_STREAM_RING;
+ return;
+
+ case AUDIO_USAGE_NOTIFICATION:
+ case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST:
+ case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT:
+ case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED:
+ case AUDIO_USAGE_NOTIFICATION_EVENT:
+ mStreamType = AUDIO_STREAM_NOTIFICATION;
+ return;
+
+ case AUDIO_USAGE_UNKNOWN:
+ default:
+ mStreamType = AUDIO_STREAM_MUSIC;
+ }
+}
+
+bool AudioTrack::isValidAttributes(const audio_attributes_t *paa) {
+ // has flags that map to a strategy?
+ if ((paa->flags & (AUDIO_FLAG_AUDIBILITY_ENFORCED | AUDIO_FLAG_SCO)) != 0) {
+ return true;
+ }
+
+ // has known usage?
+ switch (paa->usage) {
+ case AUDIO_USAGE_UNKNOWN:
+ case AUDIO_USAGE_MEDIA:
+ case AUDIO_USAGE_VOICE_COMMUNICATION:
+ case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING:
+ case AUDIO_USAGE_ALARM:
+ case AUDIO_USAGE_NOTIFICATION:
+ case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE:
+ case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST:
+ case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT:
+ case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED:
+ case AUDIO_USAGE_NOTIFICATION_EVENT:
+ case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY:
+ case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE:
+ case AUDIO_USAGE_ASSISTANCE_SONIFICATION:
+ case AUDIO_USAGE_GAME:
+ break;
+ default:
+ return false;
+ }
+ return true;
+}
// =========================================================================
void AudioTrack::DeathNotifier::binderDied(const wp<IBinder>& who __unused)