Moved audioproc_f interface into api directory.

The interface of the audioproc_f tool should be located in the api/ directory, so it becomes visible to the outside world.

Bug: webrtc:8732
Change-Id: Ia7475883aeb0e1f7a6afa5e791204b38dc53a8b8
Reviewed-on: https://webrtc-review.googlesource.com/61801
Commit-Queue: Ivo Creusen <ivoc@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22449}
diff --git a/api/BUILD.gn b/api/BUILD.gn
index a238357..ec71784 100644
--- a/api/BUILD.gn
+++ b/api/BUILD.gn
@@ -313,6 +313,22 @@
 }
 
 if (rtc_include_tests) {
+  if (rtc_enable_protobuf) {
+    rtc_source_set("audioproc_f_api") {
+      visibility = [ "*" ]
+      testonly = true
+      sources = [
+        "test/audioproc_float.cc",
+        "test/audioproc_float.h",
+      ]
+
+      deps = [
+        "../modules/audio_processing:audio_processing",
+        "../modules/audio_processing:audioproc_f_impl",
+      ]
+    }
+  }
+
   rtc_source_set("mock_audio_mixer") {
     testonly = true
     sources = [
diff --git a/api/DEPS b/api/DEPS
index 28914ba..ba5d623 100644
--- a/api/DEPS
+++ b/api/DEPS
@@ -5,6 +5,7 @@
   "+p2p",
   "+pc",
   "+logging/rtc_event_log/rtc_event_log_factory_interface.h",
+  "+modules/audio_processing/include",
 ]
 
 specific_include_rules = {
@@ -27,9 +28,4 @@
   ".*i420_buffer\.h": [
     "+system_wrappers/include/aligned_malloc.h",
   ],
-
-  # Needed to use the APM statistics.
-  "mediastreaminterface.h": [
-    "+modules/audio_processing/include/audio_processing_statistics.h",
-  ],
 }
diff --git a/api/test/audioproc_float.cc b/api/test/audioproc_float.cc
new file mode 100644
index 0000000..9d3ad7e
--- /dev/null
+++ b/api/test/audioproc_float.cc
@@ -0,0 +1,27 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/audioproc_float.h"
+
+#include <utility>
+
+#include "modules/audio_processing/test/audioproc_float_impl.h"
+
+namespace webrtc {
+namespace test {
+
+int AudioprocFloat(std::unique_ptr<AudioProcessingBuilder> ap_builder,
+                   int argc,
+                   char* argv[]) {
+  return AudioprocFloatImpl(std::move(ap_builder), argc, argv);
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/api/test/audioproc_float.h b/api/test/audioproc_float.h
new file mode 100644
index 0000000..25e4dd5
--- /dev/null
+++ b/api/test/audioproc_float.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#ifndef API_TEST_AUDIOPROC_FLOAT_H_
+#define API_TEST_AUDIOPROC_FLOAT_H_
+
+#include <memory>
+
+#include "modules/audio_processing/include/audio_processing.h"
+
+namespace webrtc {
+namespace test {
+
+// This is an interface for the audio processing simulation utility. This
+// utility can be used to simulate the audioprocessing module using a recording
+// (either an AEC dump or wav files), and generate the output as a wav file.
+// The |ap_builder| object will be used to create the AudioProcessing instance
+// that is used during the simulation. The |ap_builder| supports setting of
+// injectable components, which will be passed on to the created AudioProcessing
+// instance. It is needed to pass the command line flags as |argc| and |argv|,
+// so these can be interpreted properly by the utility.
+// To get a fully-working audioproc_f utility, all that is needed is to write a
+// main function, create an AudioProcessingBuilder, optionally set custom
+// processing components on it, and pass the builder together with the command
+// line arguments into this function.
+// To see a list of all supported command line flags, run the executable with
+// the '--help' flag.
+int AudioprocFloat(std::unique_ptr<AudioProcessingBuilder> ap_builder,
+                   int argc,
+                   char* argv[]);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_AUDIOPROC_FLOAT_H_