commit 4543697b37554df546d3583fd54a206558dea2b8
author Gustaf Ullberg <gustaf@webrtc.org> Fri Nov 13 14:30:30 2020 +0100
committer Commit Bot <commit-bot@chromium.org> Fri Nov 13 15:01:31 2020 +0000
tree acb23c27006c2830e5c8a170a03319f10b5bf2c5
parent bee6408d7b671199206bbf3b27a6d52ad906532e

Set range of GetLinearAecOutput to [-1, 1]

The output of GetLinearAecOutput is changed to have the range [-1, 1]
instead of [-2^15, 2^15] to be more similar to other Audio Processing
Module API functions.

The "--linear_aec_output" of audioproc_f has been tested for
bit-exactness.

Bug: webrtc:12185
Change-Id: Id50d93fcfaee5c239f3eb73f99d0bd3533319518
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/193062
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32604}

modules/audio_processing/audio_processing_impl.cc

diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 56d7073..37112f0 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -1476,8 +1476,8 @@
       rtc::ArrayView<const float> channel_view =
           rtc::ArrayView<const float>(linear_aec_buffer->channels_const()[ch],
                                       linear_aec_buffer->num_frames());
-      std::copy(channel_view.begin(), channel_view.end(),
-                linear_output[ch].begin());
+      FloatS16ToFloat(channel_view.data(), channel_view.size(),
+                      linear_output[ch].data());
     }
     return true;
   }