Issue 2667801: [Audio Effect Framework] AudioFlinger, AudioMixer AudioTrack modifications.
First drop of audio framework modifications for audio effects support.
- AudioTrack/AudioRecord:
Added support for auxiliary effects in AudioTrack
Added support for audio sessions
Fixed left right channel inversion in setVolume()
- IAudioFlinger:
Added interface methods for effect enumeraiton and instantiation
Added support for audio sessions.
- IAudioTrack:
Added method to attach auxiliary effect.
- AudioFlinger
Created new classes to control effect engines in effect library and manage effect connections to tracks or
output mix:
EffectModule: wrapper object controlling the effect engine implementation in the effect library. There
is one EffectModule per instance of an effect in a given audio session
EffectChain: group of effects associated to one audio session. There is one EffectChain per audio session.
EffectChain for session 0 is for output mix effects, other chains are attached to audio tracks
with same session ID. Each chain contains a variable number of EffectModules
EffectHandle: implements the IEffect interface. There is one EffectHandle object for each application
controlling (or using) an effect module. THe EffectModule maintians a list of EffectHandles.
Added support for effect modules and effect chains creation in PlaybackThread.
modified mixer thread loop to allow track volume control by effect modules and call effect processing.
-AudioMixer
Each track now specifies its output buffer used by mixer for accumulation
Modified mixer process functions to process tracks by groups of tracks with same buffer
Modified track process functions to support accumulation to auxiliary channel
Change-Id: I26d5f7c9e070a89bdd383e1a659f8b7ca150379c
diff --git a/libs/audioflinger/AudioMixer.h b/libs/audioflinger/AudioMixer.h
index 15766cd..aee3e17 100644
--- a/libs/audioflinger/AudioMixer.h
+++ b/libs/audioflinger/AudioMixer.h
@@ -63,11 +63,14 @@
// for target TRACK
CHANNEL_COUNT = 0x4000,
FORMAT = 0x4001,
+ MAIN_BUFFER = 0x4002,
+ AUX_BUFFER = 0x4003,
// for TARGET RESAMPLE
SAMPLE_RATE = 0x4100,
// for TARGET VOLUME (8 channels max)
VOLUME0 = 0x4200,
VOLUME1 = 0x4201,
+ AUXLEVEL = 0x4210,
};
@@ -78,10 +81,10 @@
status_t disable(int name);
status_t setActiveTrack(int track);
- status_t setParameter(int target, int name, int value);
+ status_t setParameter(int target, int name, void *value);
status_t setBufferProvider(AudioBufferProvider* bufferProvider);
- void process(void* output);
+ void process();
uint32_t trackNames() const { return mTrackNames; }
@@ -94,6 +97,7 @@
NEEDS_FORMAT__MASK = 0x000000F0,
NEEDS_MUTE__MASK = 0x00000100,
NEEDS_RESAMPLE__MASK = 0x00001000,
+ NEEDS_AUX__MASK = 0x00010000,
};
enum {
@@ -107,6 +111,9 @@
NEEDS_RESAMPLE_DISABLED = 0x00000000,
NEEDS_RESAMPLE_ENABLED = 0x00001000,
+
+ NEEDS_AUX_DISABLED = 0x00000000,
+ NEEDS_AUX_ENABLED = 0x00010000,
};
static inline int32_t applyVolume(int32_t in, int32_t v) {
@@ -115,9 +122,10 @@
struct state_t;
+ struct track_t;
- typedef void (*mix_t)(state_t* state, void* output);
-
+ typedef void (*mix_t)(state_t* state);
+ typedef void (*hook_t)(track_t* t, int32_t* output, size_t numOutFrames, int32_t* temp, int32_t* aux);
static const int BLOCKSIZE = 16; // 4 cache lines
struct track_t {
@@ -131,6 +139,9 @@
int32_t prevVolume[2];
int32_t volumeInc[2];
+ int32_t auxLevel;
+ int32_t auxInc;
+ int32_t prevAuxLevel;
uint16_t frameCount;
@@ -142,15 +153,17 @@
AudioBufferProvider* bufferProvider;
mutable AudioBufferProvider::Buffer buffer;
- void (*hook)(track_t* t, int32_t* output, size_t numOutFrames, int32_t* temp);
+ hook_t hook;
void const* in; // current location in buffer
AudioResampler* resampler;
uint32_t sampleRate;
+ int32_t* mainBuffer;
+ int32_t* auxBuffer;
bool setResampler(uint32_t sampleRate, uint32_t devSampleRate);
bool doesResample() const;
- void adjustVolumeRamp();
+ void adjustVolumeRamp(bool aux);
};
// pad to 32-bytes to fill cache line
@@ -173,18 +186,19 @@
void invalidateState(uint32_t mask);
- static void track__genericResample(track_t* t, int32_t* out, size_t numFrames, int32_t* temp);
- static void track__nop(track_t* t, int32_t* out, size_t numFrames, int32_t* temp);
- static void volumeRampStereo(track_t* t, int32_t* out, size_t frameCount, int32_t* temp);
- static void track__16BitsStereo(track_t* t, int32_t* out, size_t numFrames, int32_t* temp);
- static void track__16BitsMono(track_t* t, int32_t* out, size_t numFrames, int32_t* temp);
+ static void track__genericResample(track_t* t, int32_t* out, size_t numFrames, int32_t* temp, int32_t* aux);
+ static void track__nop(track_t* t, int32_t* out, size_t numFrames, int32_t* temp, int32_t* aux);
+ static void track__16BitsStereo(track_t* t, int32_t* out, size_t numFrames, int32_t* temp, int32_t* aux);
+ static void track__16BitsMono(track_t* t, int32_t* out, size_t numFrames, int32_t* temp, int32_t* aux);
+ static void volumeRampStereo(track_t* t, int32_t* out, size_t frameCount, int32_t* temp, int32_t* aux);
+ static void volumeStereo(track_t* t, int32_t* out, size_t frameCount, int32_t* temp, int32_t* aux);
- static void process__validate(state_t* state, void* output);
- static void process__nop(state_t* state, void* output);
- static void process__genericNoResampling(state_t* state, void* output);
- static void process__genericResampling(state_t* state, void* output);
- static void process__OneTrack16BitsStereoNoResampling(state_t* state, void* output);
- static void process__TwoTracks16BitsStereoNoResampling(state_t* state, void* output);
+ static void process__validate(state_t* state);
+ static void process__nop(state_t* state);
+ static void process__genericNoResampling(state_t* state);
+ static void process__genericResampling(state_t* state);
+ static void process__OneTrack16BitsStereoNoResampling(state_t* state);
+ static void process__TwoTracks16BitsStereoNoResampling(state_t* state);
};
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