1 files changed, 24 insertions, 0 deletions
diff --git a/media/libmediaplayerservice/StagefrightRecorder.cpp b/media/libmediaplayerservice/StagefrightRecorder.cpp
index 709e653..d182a68 100644
--- a/media/libmediaplayerservice/StagefrightRecorder.cpp
+++ b/media/libmediaplayerservice/StagefrightRecorder.cpp
@@ -963,6 +963,30 @@ sp<MediaSource> StagefrightRecorder::createAudioSource() {
         }
     }
 
+    // If using QCOM extension (Camera 1 HAL) for slow motion recording
+    // mCaptureFpsEnable and mCaptureFps will not be set via setCaptureRate
+    // We need to query from AVUtil, in order to support slow motion audio recording
+    if (mVideoSourceNode != NULL) {
+        int hfrRatio =  AVUtils::get()->HFRUtils().getHFRRatio(mVideoSourceNode->getFormat());
+        if (hfrRatio != 1) {
+            // Upscale the sample rate for slow motion recording.
+            // Fail audio source creation if source sample rate is too high, as it could
+            // cause out-of-memory due to large input buffer size. And audio recording
+            // probably doesn't make sense in the scenario, since the slow-down factor
+            // is probably huge (eg. mSampleRate=48K, hfrRatio=240, mFrameRate=1).
+            const static int32_t SAMPLE_RATE_HZ_MAX = 192000;
+            sourceSampleRate =
+                    (mSampleRate * hfrRatio + mFrameRate / 2) / mFrameRate;
+            if (sourceSampleRate < mSampleRate || sourceSampleRate > SAMPLE_RATE_HZ_MAX) {
+                ALOGE("source sample rate out of range! "
+                        "(mSampleRate %d, hfrRatio %d, mFrameRate %d",
+                        mSampleRate, hfrRatio, mFrameRate);
+                return NULL;
+            }
+        }
+    }
+
+
     sp<AudioSource> audioSource = AVFactory::get()->createAudioSource(
         mAudioSource,
         mOpPackageName,