Removed the indirect error message reporting in aec and aecm.

webrtc/modules/audio_processing/aec/include/echo_cancellation.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 91 matching lines @@
  * Inputs                       Description
  * -------------------------------------------------------------------
  * void*          aecInst       Pointer to the AEC instance
  * const float*   farend        In buffer containing one frame of
  *                              farend signal for L band
  * int16_t        nrOfSamples   Number of samples in farend buffer
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
  * int32_t        return        0: OK
- *                             -1: error
+ *                              12000-12050: error code
  */
 int32_t WebRtcAec_BufferFarend(void* aecInst,
                                const float* farend,
                                size_t nrOfSamples);
 
 /*
+ * Reports any errors that would arise if buffering a farend buffer
+ *
+ * Inputs                       Description
+ * -------------------------------------------------------------------
+ * void*          aecInst       Pointer to the AEC instance
+ * const float*   farend        In buffer containing one frame of
+ *                              farend signal for L band
+ * int16_t        nrOfSamples   Number of samples in farend buffer
+ *
+ * Outputs                      Description
+ * -------------------------------------------------------------------
+ * int32_t        return        0: OK
+ *                              12000-12050: error code
+ */
+int32_t WebRtcAec_GetBufferFarendError(void* aecInst,
+                                       const float* farend,
+                                       size_t nrOfSamples);
+
+/*
  * Runs the echo canceller on an 80 or 160 sample blocks of data.
  *
  * Inputs                       Description
  * -------------------------------------------------------------------
  * void*         aecInst        Pointer to the AEC instance
  * float* const* nearend        In buffer containing one frame of
  *                              nearend+echo signal for each band
  * int           num_bands      Number of bands in nearend buffer
  * int16_t       nrOfSamples    Number of samples in nearend buffer
  * int16_t       msInSndCardBuf Delay estimate for sound card and
  *                              system buffers
  * int16_t       skew           Difference between number of samples played
  *                              and recorded at the soundcard (for clock skew
  *                              compensation)
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
  * float* const* out            Out buffer, one frame of processed nearend
  *                              for each band
  * int32_t       return         0: OK
- *                             -1: error
+ *                              12000-12050: error code
  */
 int32_t WebRtcAec_Process(void* aecInst,
                           const float* const* nearend,
                           size_t num_bands,
                           float* const* out,
                           size_t nrOfSamples,
                           int16_t msInSndCardBuf,
                           int32_t skew);
 
 /*
  * This function enables the user to set certain parameters on-the-fly.
  *
  * Inputs                       Description
  * -------------------------------------------------------------------
  * void*          handle        Pointer to the AEC instance
  * AecConfig      config        Config instance that contains all
  *                              properties to be set
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
- * int            return         0: OK
- *                              -1: error
+ * int            return        0: OK
+ *                              12000-12050: error code
  */
 int WebRtcAec_set_config(void* handle, AecConfig config);
 
 /*
  * Gets the current echo status of the nearend signal.
  *
  * Inputs                       Description
  * -------------------------------------------------------------------
  * void*          handle        Pointer to the AEC instance
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
  * int*           status        0: Almost certainly nearend single-talk
  *                              1: Might not be neared single-talk
- * int            return         0: OK
- *                              -1: error
+ * int            return        0: OK
+ *                              12000-12050: error code
  */
 int WebRtcAec_get_echo_status(void* handle, int* status);
 
 /*
  * Gets the current echo metrics for the session.
  *
  * Inputs                       Description
  * -------------------------------------------------------------------
  * void*          handle        Pointer to the AEC instance
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
  * AecMetrics*    metrics       Struct which will be filled out with the
  *                              current echo metrics.
- * int            return         0: OK
- *                              -1: error
+ * int            return        0: OK
+ *                              12000-12050: error code
  */
 int WebRtcAec_GetMetrics(void* handle, AecMetrics* metrics);
 
 /*
  * Gets the current delay metrics for the session.
  *
  * Inputs                       Description
  * -------------------------------------------------------------------
  * void*   handle               Pointer to the AEC instance
  *
  * Outputs                      Description
  * -------------------------------------------------------------------
  * int*    median               Delay median value.
  * int*    std                  Delay standard deviation.
  * float*  fraction_poor_delays Fraction of the delay estimates that may
  *                              cause the AEC to perform poorly.
  *
- * int     return                0: OK
- *                              -1: error
+ * int            return        0: OK
+ *                              12000-12050: error code
  */
 int WebRtcAec_GetDelayMetrics(void* handle,
                               int* median,
                               int* std,
                               float* fraction_poor_delays);
 
-/*
- * Gets the last error code.
- *
- * Inputs                       Description
- * -------------------------------------------------------------------
- * void*          aecInst       Pointer to the AEC instance
- *
- * Outputs                      Description
- * -------------------------------------------------------------------
- * int32_t        return        11000-11100: error code
- */
-int32_t WebRtcAec_get_error_code(void* aecInst);
-
 // Returns a pointer to the low level AEC handle.
 //
 // Input:
 //  - handle                    : Pointer to the AEC instance.
 //
 // Return value:
 //  - AecCore pointer           : NULL for error.
 //
 struct AecCore* WebRtcAec_aec_core(void* handle);
 
 #ifdef __cplusplus
 }
 #endif
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_INCLUDE_ECHO_CANCELLATION_H_