Revert of Allow intelligibility to compile in apm

webrtc/modules/audio_processing/intelligibility/intelligibility_proc.cc

 /*
  *  Copyright (c) 2014 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.
  */
 
-//
-//  Command line tool for speech intelligibility enhancement. Provides for
-//  running and testing intelligibility_enhancer as an independent process.
-//  Use --help for options.
-//
-
 #include <arpa/inet.h>
 #include <fcntl.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <fenv.h>
 #include <limits>
 
 #include <complex>
 
 #include "gflags/gflags.h"
-#include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/common_audio/real_fourier.h"
 #include "webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h"
 #include "webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h"
 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
 
-// PCM data simulating streams
 const int16_t* in_ipcm;
 int16_t* out_ipcm;
 const int16_t* noise_ipcm;
+
 float* in_fpcm;
 float* out_fpcm;
 float* noise_fpcm;
-
-// Current locations in streams
 float* noise_cursor;
 float* clear_cursor;
 
-int samples;        // Number of samples in input PCM file
-int fragment_size;  // Number of samples to process at a time
-                    // to simulate APM stream processing
+int samples;
+int fragment_size;
 
 using std::complex;
-
-namespace webrtc {
-
 using webrtc::RealFourier;
 using webrtc::IntelligibilityEnhancer;
 
-DEFINE_int32(clear_type,
-             webrtc::intelligibility::VarianceArray::kStepInfinite,
+DEFINE_int32(clear_type, webrtc::intelligibility::VarianceArray::kStepInfinite,
              "Variance algorithm for clear data.");
-DEFINE_double(clear_alpha, 0.9, "Variance decay factor for clear data.");
-DEFINE_int32(clear_window,
-             475,
+DEFINE_double(clear_alpha, 0.9,
+              "Variance decay factor for clear data.");
+DEFINE_int32(clear_window, 475,
              "Window size for windowed variance for clear data.");
-DEFINE_int32(sample_rate,
-             16000,
+DEFINE_int32(sample_rate, 16000,
              "Audio sample rate used in the input and output files.");
-DEFINE_int32(ana_rate,
-             800,
+DEFINE_int32(ana_rate, 800,
              "Analysis rate; gains recalculated every N blocks.");
-DEFINE_int32(
-    var_rate,
-    2,
-    "Variance clear rate; history is forgotten every N gain recalculations.");
+DEFINE_int32(var_rate, 2,
+             "Variance clear rate; history is forgotten every N gain recalculations.");
 DEFINE_double(gain_limit, 1000.0, "Maximum gain change in one block.");
 
 DEFINE_bool(repeat, false, "Repeat input file ad nauseam.");
 
 DEFINE_string(clear_file, "speech.pcm", "Input file with clear speech.");
 DEFINE_string(noise_file, "noise.pcm", "Input file with noise data.");
-DEFINE_string(out_file,
-              "proc_enhanced.pcm",
-              "Enhanced output. Use '-' to "
+DEFINE_string(out_file, "proc_enhanced.pcm", "Enhanced output. Use '-' to "
               "pipe through aplay internally.");
 
-// Constant IntelligibilityEnhancer constructor parameters.
-const int kErbResolution = 2;
-const int kNumChannels = 1;
-
-// Converts output stream to Sun AU format and writes to file descriptor |fd|.
-// Can be used to pipe output directly into aplay.
-// TODO(ekmeyerson): Modify to write WAV instead.
+// Write an Sun AU-formatted audio chunk into file descriptor |fd|. Can be used
+// to pipe the audio stream directly into aplay.
 void writeau(int fd) {
   uint32_t thing;
 
   write(fd, ".snd", 4);
   thing = htonl(24);
   write(fd, &thing, sizeof(thing));
   thing = htonl(0xffffffff);
   write(fd, &thing, sizeof(thing));
   thing = htonl(3);
   write(fd, &thing, sizeof(thing));
   thing = htonl(FLAGS_sample_rate);
   write(fd, &thing, sizeof(thing));
   thing = htonl(1);
   write(fd, &thing, sizeof(thing));
 
   for (int i = 0; i < samples; ++i) {
     out_ipcm[i] = htons(out_ipcm[i]);
   }
   write(fd, out_ipcm, sizeof(*out_ipcm) * samples);
 }
 
-// void function for gtest
-void void_main(int argc, char* argv[]) {
-  google::SetUsageMessage(
-      "\n\nVariance algorithm types are:\n"
-      "  0 - infinite/normal,\n"
-      "  1 - exponentially decaying,\n"
-      "  2 - rolling window.\n"
-      "\nInput files must be little-endian 16-bit signed raw PCM.\n");
+int main(int argc, char* argv[]) {
+  google::SetUsageMessage("\n\nVariance algorithm types are:\n"
+                          "  0 - infinite/normal,\n"
+                          "  1 - exponentially decaying,\n"
+                          "  2 - rolling window.\n"
+                          "\nInput files must be little-endian 16-bit signed raw PCM.\n");
   google::ParseCommandLineFlags(&argc, &argv, true);
 
   const char* in_name = FLAGS_clear_file.c_str();
   const char* out_name = FLAGS_out_file.c_str();
   const char* noise_name = FLAGS_noise_file.c_str();
   struct stat in_stat, noise_stat;
   int in_fd, out_fd, noise_fd;
   FILE* aplay_file = nullptr;
 
-  // Load settings and set up PCMs.
+  fragment_size = FLAGS_sample_rate / 100;
 
-  fragment_size = FLAGS_sample_rate / 100;  // Mirror real time APM chunk size.
-                                            // Duplicates chunk_length_ in
-                                            // IntelligibilityEnhancer.
-
-  ASSERT_EQ(stat(in_name, &in_stat), 0) << "Empty speech input.";
-  ASSERT_EQ(stat(noise_name, &noise_stat), 0) << "Empty noise input.";
-
+  stat(in_name, &in_stat);
+  stat(noise_name, &noise_stat);
   samples = in_stat.st_size / sizeof(*in_ipcm);
 
   in_fd = open(in_name, O_RDONLY);
   if (!strcmp(out_name, "-")) {
     aplay_file = popen("aplay -t au", "w");
     out_fd = fileno(aplay_file);
   } else {
     out_fd = open(out_name, O_WRONLY | O_CREAT | O_TRUNC,
                   S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
   }
   noise_fd = open(noise_name, O_RDONLY);
 
-  in_ipcm = static_cast<int16_t*>(
-      mmap(nullptr, in_stat.st_size, PROT_READ, MAP_PRIVATE, in_fd, 0));
-  noise_ipcm = static_cast<int16_t*>(
-      mmap(nullptr, noise_stat.st_size, PROT_READ, MAP_PRIVATE, noise_fd, 0));
+  in_ipcm = static_cast<int16_t*>(mmap(nullptr, in_stat.st_size, PROT_READ,
+                                       MAP_PRIVATE, in_fd, 0));
+  noise_ipcm = static_cast<int16_t*>(mmap(nullptr, noise_stat.st_size,
+                                          PROT_READ, MAP_PRIVATE, noise_fd, 0));
   out_ipcm = new int16_t[samples];
   out_fpcm = new float[samples];
   in_fpcm = new float[samples];
   noise_fpcm = new float[samples];
 
   for (int i = 0; i < samples; ++i) {
     noise_fpcm[i] = noise_ipcm[i % (noise_stat.st_size / sizeof(*noise_ipcm))];
   }
 
-  // Run intelligibility enhancement.
-
-  IntelligibilityEnhancer enh(
-      kErbResolution,
-      FLAGS_sample_rate,
-      kNumChannels,
-      FLAGS_clear_type, static_cast<float>(FLAGS_clear_alpha),
-      FLAGS_clear_window, FLAGS_ana_rate, FLAGS_var_rate, FLAGS_gain_limit);
+  //feenableexcept(FE_INVALID | FE_OVERFLOW);
+  IntelligibilityEnhancer enh(2,
+                              FLAGS_sample_rate, 1,
+                              FLAGS_clear_type,
+                              static_cast<float>(FLAGS_clear_alpha),
+                              FLAGS_clear_window,
+                              FLAGS_ana_rate,
+                              FLAGS_var_rate,
+                              FLAGS_gain_limit);
 
   // Slice the input into smaller chunks, as the APM would do, and feed them
-  // through the enhancer. Repeat indefinitely if FLAGS_repeat is set.
+  // into the enhancer. Repeat indefinitely if FLAGS_repeat is set.
   do {
     noise_cursor = noise_fpcm;
     clear_cursor = in_fpcm;
     for (int i = 0; i < samples; ++i) {
       in_fpcm[i] = in_ipcm[i];
     }
 
     for (int i = 0; i < samples; i += fragment_size) {
       enh.ProcessCaptureAudio(&noise_cursor);
       enh.ProcessRenderAudio(&clear_cursor);
@@ skipping 13 matching lines @@
 
   munmap(const_cast<int16_t*>(noise_ipcm), noise_stat.st_size);
   munmap(const_cast<int16_t*>(in_ipcm), in_stat.st_size);
   close(noise_fd);
   if (aplay_file) {
     pclose(aplay_file);
   } else {
     close(out_fd);
   }
   close(in_fd);
+
+  return 0;
 }
 
-}  // namespace webrtc
-
-int main(int argc, char* argv[]) {
-  webrtc::void_main(argc, argv);
-  return 0;
-}