commit e70bc7fc5910583a4495e3c7f96cf5cad4b947a2
author jiabin <jiabin@google.com> Tue Jun 30 22:07:55 2020 -0700
committer jiabin <jiabin@google.com> Fri Jul 17 14:52:16 2020 -0700
tree a86c77b36f12df749cc41a4b9ebc3e8cc12a8b02
parent eb3bda06752f9539db64f289039968f8395bf9f5

Support scaling haptic data in HapticGenerator

Move function of scaling haptic data from AudioMixer to vibrator
library. Scaling haptic data in HapticGenerator according to the haptic
intensity.

Bug: 136490803
Test: play audio-coupled-haptic files
Test: play audio with HapticGenerator effect
Change-Id: I6bac63c085332ea87cc6612a8f2f368ad7ef7826

media/libaudioprocessing/AudioMixer.cpp

diff --git a/media/libaudioprocessing/AudioMixer.cpp b/media/libaudioprocessing/AudioMixer.cpp
index 1a31420..2ea215f 100644
--- a/media/libaudioprocessing/AudioMixer.cpp
+++ b/media/libaudioprocessing/AudioMixer.cpp
@@ -423,7 +423,7 @@
             }
             } break;
         case HAPTIC_INTENSITY: {
-            const haptic_intensity_t hapticIntensity = static_cast<haptic_intensity_t>(valueInt);
+            const os::HapticScale hapticIntensity = static_cast<os::HapticScale>(valueInt);
             if (track->mHapticIntensity != hapticIntensity) {
                 track->mHapticIntensity = hapticIntensity;
             }
@@ -545,7 +545,7 @@
     t->mPlaybackRate = AUDIO_PLAYBACK_RATE_DEFAULT;
     // haptic
     t->mHapticPlaybackEnabled = false;
-    t->mHapticIntensity = HAPTIC_SCALE_NONE;
+    t->mHapticIntensity = os::HapticScale::NONE;
     t->mMixerHapticChannelMask = AUDIO_CHANNEL_NONE;
     t->mMixerHapticChannelCount = 0;
     t->mAdjustInChannelCount = t->channelCount + t->mHapticChannelCount;
@@ -590,19 +590,12 @@
             const std::shared_ptr<Track> &t = getTrack(name);
             if (t->mHapticPlaybackEnabled) {
                 size_t sampleCount = mFrameCount * t->mMixerHapticChannelCount;
-                float gamma = t->getHapticScaleGamma();
-                float maxAmplitudeRatio = t->getHapticMaxAmplitudeRatio();
                 uint8_t* buffer = (uint8_t*)pair.first + mFrameCount * audio_bytes_per_frame(
                         t->mMixerChannelCount, t->mMixerFormat);
                 switch (t->mMixerFormat) {
                 // Mixer format should be AUDIO_FORMAT_PCM_FLOAT.
                 case AUDIO_FORMAT_PCM_FLOAT: {
-                    float* fout = (float*) buffer;
-                    for (size_t i = 0; i < sampleCount; i++) {
-                        float mul = fout[i] >= 0 ? 1.0 : -1.0;
-                        fout[i] = powf(fabsf(fout[i] / HAPTIC_MAX_AMPLITUDE_FLOAT), gamma)
-                                * maxAmplitudeRatio * HAPTIC_MAX_AMPLITUDE_FLOAT * mul;
-                    }
+                    os::scaleHapticData((float*) buffer, sampleCount, t->mHapticIntensity);
                 } break;
                 default:
                     LOG_ALWAYS_FATAL("bad mMixerFormat: %#x", t->mMixerFormat);