3 files changed, 15 insertions, 12 deletions
diff --git a/media/libstagefright/codecs/aacenc/AACEncoder.cpp b/media/libstagefright/codecs/aacenc/AACEncoder.cpp
index c05e3e5..e391c72 100644
--- a/media/libstagefright/codecs/aacenc/AACEncoder.cpp
+++ b/media/libstagefright/codecs/aacenc/AACEncoder.cpp
@@ -209,7 +209,7 @@ status_t AACEncoder::read(
     CHECK_EQ(mBufferGroup->acquire_buffer(&buffer), OK);
     uint8_t *outPtr = (uint8_t *)buffer->data();
     bool readFromSource = false;
-    int64_t wallClockTimeUs = 0;
+    int64_t wallClockTimeUs = -1;
 
     if (mFrameCount == 0) {
         memcpy(outPtr, mAudioSpecificConfigData, 2);
@@ -240,8 +240,9 @@ status_t AACEncoder::read(
             CHECK_EQ(align, 0);
 
             int64_t timeUs;
-            CHECK(mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs));
-            wallClockTimeUs = timeUs;
+            if (mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs)) {
+                wallClockTimeUs = timeUs;
+            }
             if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
                 mAnchorTimeUs = timeUs;
             }
@@ -298,7 +299,7 @@ status_t AACEncoder::read(
     int64_t mediaTimeUs =
         ((mFrameCount - 1) * 1000000LL * kNumSamplesPerFrame) / mSampleRate;
     buffer->meta_data()->setInt64(kKeyTime, mAnchorTimeUs + mediaTimeUs);
-    if (readFromSource) {
+    if (readFromSource && wallClockTimeUs != -1) {
         buffer->meta_data()->setInt64(kKeyDriftTime, mediaTimeUs - wallClockTimeUs);
     }
     ++mFrameCount;
diff --git a/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp b/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp
index dab1390..858e6d0 100644
--- a/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp
+++ b/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp
@@ -148,7 +148,7 @@ status_t AMRNBEncoder::read(
     ReadOptions::SeekMode mode;
     CHECK(options == NULL || !options->getSeekTo(&seekTimeUs, &mode));
     bool readFromSource = false;
-    int64_t wallClockTimeUs = 0;
+    int64_t wallClockTimeUs = -1;
 
     while (mNumInputSamples < kNumSamplesPerFrame) {
         if (mInputBuffer == NULL) {
@@ -171,8 +171,9 @@ status_t AMRNBEncoder::read(
             readFromSource = true;
 
             int64_t timeUs;
-            CHECK(mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs));
-            wallClockTimeUs = timeUs;
+            if (mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs)) {
+                wallClockTimeUs = timeUs;
+            }
             if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
                 mAnchorTimeUs = timeUs;
             }
@@ -227,7 +228,7 @@ status_t AMRNBEncoder::read(
     buffer->meta_data()->setInt64(
             kKeyTime, mAnchorTimeUs + mediaTimeUs);
 
-    if (readFromSource) {
+    if (readFromSource && wallClockTimeUs != -1) {
         buffer->meta_data()->setInt64(kKeyDriftTime,
             mediaTimeUs - wallClockTimeUs);
     }
diff --git a/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp b/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp
index b62eb5b..cd28413 100644
--- a/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp
+++ b/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp
@@ -199,7 +199,7 @@ status_t AMRWBEncoder::read(
     ReadOptions::SeekMode mode;
     CHECK(options == NULL || !options->getSeekTo(&seekTimeUs, &mode));
     bool readFromSource = false;
-    int64_t wallClockTimeUs = 0;
+    int64_t wallClockTimeUs = -1;
 
     while (mNumInputSamples < kNumSamplesPerFrame) {
         if (mInputBuffer == NULL) {
@@ -221,8 +221,9 @@ status_t AMRWBEncoder::read(
             CHECK_EQ(align, 0);
 
             int64_t timeUs;
-            CHECK(mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs));
-            wallClockTimeUs = timeUs;
+            if (mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs)) {
+                wallClockTimeUs = timeUs;
+            }
             if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
                 mAnchorTimeUs = timeUs;
             }
@@ -285,7 +286,7 @@ status_t AMRWBEncoder::read(
 
     int64_t mediaTimeUs = mNumFramesOutput * 20000LL;
     buffer->meta_data()->setInt64(kKeyTime, mAnchorTimeUs + mediaTimeUs);
-    if (readFromSource) {
+    if (readFromSource && wallClockTimeUs != -1) {
         buffer->meta_data()->setInt64(kKeyDriftTime, mediaTimeUs - wallClockTimeUs);
     }