audioflinger: define MMAP HAL Stream control interface
Added definition of MmapStreamInterface used by Oboe service
to open, configure and control MMAP streams at the audio HAl.
This interface is implemented by audioflinger and abstracts the details
of interacting with audio policy manager and audio HAL from Oboe service.
A callback interface MmapStreamCallback is also defiend to communicate
volume and routing changes back to Oboe service.
Bug: 33398120
Test: build
Change-Id: If953d44903aaa4eb17ff16f1922ca16e5e0e0a87
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index d18ca47..3d6571e 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -34,6 +34,8 @@
#include <media/IAudioRecord.h>
#include <media/AudioSystem.h>
#include <media/AudioTrack.h>
+#include <media/MmapStreamInterface.h>
+#include <media/MmapStreamCallback.h>
#include <utils/Atomic.h>
#include <utils/Errors.h>
@@ -98,6 +100,7 @@
public BnAudioFlinger
{
friend class BinderService<AudioFlinger>; // for AudioFlinger()
+
public:
static const char* getServiceName() ANDROID_API { return "media.audio_flinger"; }
@@ -281,6 +284,14 @@
sp<NBLog::Writer> newWriter_l(size_t size, const char *name);
void unregisterWriter(const sp<NBLog::Writer>& writer);
sp<EffectsFactoryHalInterface> getEffectsFactory();
+
+ status_t openMmapStream(MmapStreamInterface::stream_direction_t direction,
+ const audio_attributes_t *attr,
+ audio_config_base_t *config,
+ const MmapStreamInterface::Client& client,
+ audio_port_handle_t *deviceId,
+ const sp<MmapStreamCallback>& callback,
+ sp<MmapStreamInterface>& interface);
private:
static const size_t kLogMemorySize = 40 * 1024;
sp<MemoryDealer> mLogMemoryDealer; // == 0 when NBLog is disabled
@@ -288,6 +299,7 @@
// for as long as possible. The memory is only freed when it is needed for another log writer.
Vector< sp<NBLog::Writer> > mUnregisteredWriters;
Mutex mUnregisteredWritersLock;
+
public:
class SyncEvent;