1 files changed, 5 insertions, 2 deletions
diff --git a/modules/audio_coding/main/acm2/acm_opus.h b/modules/audio_coding/main/acm2/acm_opus.h
index 07ce0721..b94adc47 100644
--- a/modules/audio_coding/main/acm2/acm_opus.h
+++ b/modules/audio_coding/main/acm2/acm_opus.h
@@ -28,7 +28,9 @@ class ACMOpus : public ACMGenericCodec {
 
   ACMGenericCodec* CreateInstance(void);
 
-  int16_t InternalEncode(uint8_t* bitstream, int16_t* bitstream_len_byte);
+  int16_t InternalEncode(uint8_t* bitstream,
+                         int16_t* bitstream_len_byte) OVERRIDE
+      EXCLUSIVE_LOCKS_REQUIRED(codec_wrapper_lock_);
 
   int16_t InternalInitEncoder(WebRtcACMCodecParams *codec_params);
 
@@ -43,7 +45,8 @@ class ACMOpus : public ACMGenericCodec {
 
   void InternalDestructEncoderInst(void* ptr_inst);
 
-  int16_t SetBitRateSafe(const int32_t rate);
+  int16_t SetBitRateSafe(const int32_t rate) OVERRIDE
+      EXCLUSIVE_LOCKS_REQUIRED(codec_wrapper_lock_);
 
   WebRtcOpusEncInst* encoder_inst_ptr_;
   uint16_t sample_freq_;