Audio framework: support for audio pre processing

Audio effect framework is extended to suport effects on
output and input audio path.

AudioFlinger: Support for audio effects and effect chains is
moved from PlaybackThread class to ThreadBase class so that
RecordThread can manage effects.
Effects of type pre processing are allowed on record thread
only. When a pre processing is enabled, the effect interface handle is
passed down to the input stream so that the audio HAL can call the
process function. The record thread loop calls the effect chain process
function that will only manage the effect state and commands and skip the
process function.

AudioRecord: The audio session is allocated before calling getInput() into
audio policy serice so that the session is known before the input theead is
created and pre processings can be created on the correct session.

AudioPolicyService: default pre processing for a given input source are
loaded from audio_effects.conf file.
When an input is created, corresponding effects are created and enabled.

Change-Id: Id17119e0979b4dcf189b5c7957fec30dc3478790

1 files changed, 7 insertions, 7 deletions

diff --git a/media/libmedia/AudioEffect.cpp b/media/libmedia/AudioEffect.cpp
index 8d98900..3919551 100644
--- a/media/libmedia/AudioEffect.cpp
+++ b/media/libmedia/AudioEffect.cpp
@@ -47,11 +47,11 @@ AudioEffect::AudioEffect(const effect_uuid_t *type,
                 effect_callback_t cbf,
                 void* user,
                 int sessionId,
-                audio_io_handle_t output
+                audio_io_handle_t io
                 )
     : mStatus(NO_INIT)
 {
-    mStatus = set(type, uuid, priority, cbf, user, sessionId, output);
+    mStatus = set(type, uuid, priority, cbf, user, sessionId, io);
 }
 
 AudioEffect::AudioEffect(const char *typeStr,
@@ -60,7 +60,7 @@ AudioEffect::AudioEffect(const char *typeStr,
                 effect_callback_t cbf,
                 void* user,
                 int sessionId,
-                audio_io_handle_t output
+                audio_io_handle_t io
                 )
     : mStatus(NO_INIT)
 {
@@ -83,7 +83,7 @@ AudioEffect::AudioEffect(const char *typeStr,
         }
     }
 
-    mStatus = set(pType, pUuid, priority, cbf, user, sessionId, output);
+    mStatus = set(pType, pUuid, priority, cbf, user, sessionId, io);
 }
 
 status_t AudioEffect::set(const effect_uuid_t *type,
@@ -92,13 +92,13 @@ status_t AudioEffect::set(const effect_uuid_t *type,
                 effect_callback_t cbf,
                 void* user,
                 int sessionId,
-                audio_io_handle_t output)
+                audio_io_handle_t io)
 {
     sp<IEffect> iEffect;
     sp<IMemory> cblk;
     int enabled;
 
-    LOGV("set %p mUserData: %p", this, user);
+    LOGV("set %p mUserData: %p uuid: %p timeLow %08x", this, user, type, type ? type->timeLow : 0);
 
     if (mIEffect != 0) {
         LOGW("Effect already in use");
@@ -135,7 +135,7 @@ status_t AudioEffect::set(const effect_uuid_t *type,
     mIEffectClient = new EffectClient(this);
 
     iEffect = audioFlinger->createEffect(getpid(), (effect_descriptor_t *)&mDescriptor,
-            mIEffectClient, priority, output, mSessionId, &mStatus, &mId, &enabled);
+            mIEffectClient, priority, io, mSessionId, &mStatus, &mId, &enabled);
 
     if (iEffect == 0 || (mStatus != NO_ERROR && mStatus != ALREADY_EXISTS)) {
         LOGE("set(): AudioFlinger could not create effect, status: %d", mStatus);