audio_coding: remove "main" directory

This is the last piece of the old directory layout of the modules.

Duplicated header files are left in audio_coding/main/include until
downstream code is updated to the new location. They have pragma
warnings added to them and identical header guards as the new headers to avoid breaking things.

BUG=webrtc:5095
TESTED=Passing compile-trybots with --clobber flag:
git cl try --clobber --bot=win_compile_rel --bot=linux_compile_rel --bot=android_compile_rel --bot=mac_compile_rel --bot=ios_rel --bot=linux_gn_rel --bot=win_x64_gn_rel --bot=mac_x64_gn_rel --bot=android_gn_rel -m tryserver.webrtc
NOTRY=True
NOPRESUBMIT=True

Review URL: https://codereview.webrtc.org/1481493004

Cr-Commit-Position: refs/heads/master@{#10803}
diff --git a/webrtc/modules/audio_coding/test/TestAllCodecs.cc b/webrtc/modules/audio_coding/test/TestAllCodecs.cc
new file mode 100644
index 0000000..21ce7c1
--- /dev/null
+++ b/webrtc/modules/audio_coding/test/TestAllCodecs.cc
@@ -0,0 +1,485 @@
+/*
+ *  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.
+ */
+
+#include "webrtc/modules/audio_coding/test/TestAllCodecs.h"
+
+#include <cstdio>
+#include <limits>
+#include <string>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+#include "webrtc/common_types.h"
+#include "webrtc/engine_configurations.h"
+#include "webrtc/modules/audio_coding/include/audio_coding_module.h"
+#include "webrtc/modules/audio_coding/include/audio_coding_module_typedefs.h"
+#include "webrtc/modules/audio_coding/test/utility.h"
+#include "webrtc/system_wrappers/include/trace.h"
+#include "webrtc/test/testsupport/fileutils.h"
+#include "webrtc/typedefs.h"
+
+// Description of the test:
+// In this test we set up a one-way communication channel from a participant
+// called "a" to a participant called "b".
+// a -> channel_a_to_b -> b
+//
+// The test loops through all available mono codecs, encode at "a" sends over
+// the channel, and decodes at "b".
+
+namespace {
+const size_t kVariableSize = std::numeric_limits<size_t>::max();
+}
+
+namespace webrtc {
+
+// Class for simulating packet handling.
+TestPack::TestPack()
+    : receiver_acm_(NULL),
+      sequence_number_(0),
+      timestamp_diff_(0),
+      last_in_timestamp_(0),
+      total_bytes_(0),
+      payload_size_(0) {
+}
+
+TestPack::~TestPack() {
+}
+
+void TestPack::RegisterReceiverACM(AudioCodingModule* acm) {
+  receiver_acm_ = acm;
+  return;
+}
+
+int32_t TestPack::SendData(FrameType frame_type, uint8_t payload_type,
+                           uint32_t timestamp, const uint8_t* payload_data,
+                           size_t payload_size,
+                           const RTPFragmentationHeader* fragmentation) {
+  WebRtcRTPHeader rtp_info;
+  int32_t status;
+
+  rtp_info.header.markerBit = false;
+  rtp_info.header.ssrc = 0;
+  rtp_info.header.sequenceNumber = sequence_number_++;
+  rtp_info.header.payloadType = payload_type;
+  rtp_info.header.timestamp = timestamp;
+  if (frame_type == kAudioFrameCN) {
+    rtp_info.type.Audio.isCNG = true;
+  } else {
+    rtp_info.type.Audio.isCNG = false;
+  }
+  if (frame_type == kEmptyFrame) {
+    // Skip this frame.
+    return 0;
+  }
+
+  // Only run mono for all test cases.
+  rtp_info.type.Audio.channel = 1;
+  memcpy(payload_data_, payload_data, payload_size);
+
+  status = receiver_acm_->IncomingPacket(payload_data_, payload_size, rtp_info);
+
+  payload_size_ = payload_size;
+  timestamp_diff_ = timestamp - last_in_timestamp_;
+  last_in_timestamp_ = timestamp;
+  total_bytes_ += payload_size;
+  return status;
+}
+
+size_t TestPack::payload_size() {
+  return payload_size_;
+}
+
+uint32_t TestPack::timestamp_diff() {
+  return timestamp_diff_;
+}
+
+void TestPack::reset_payload_size() {
+  payload_size_ = 0;
+}
+
+TestAllCodecs::TestAllCodecs(int test_mode)
+    : acm_a_(AudioCodingModule::Create(0)),
+      acm_b_(AudioCodingModule::Create(1)),
+      channel_a_to_b_(NULL),
+      test_count_(0),
+      packet_size_samples_(0),
+      packet_size_bytes_(0) {
+  // test_mode = 0 for silent test (auto test)
+  test_mode_ = test_mode;
+}
+
+TestAllCodecs::~TestAllCodecs() {
+  if (channel_a_to_b_ != NULL) {
+    delete channel_a_to_b_;
+    channel_a_to_b_ = NULL;
+  }
+}
+
+void TestAllCodecs::Perform() {
+  const std::string file_name = webrtc::test::ResourcePath(
+      "audio_coding/testfile32kHz", "pcm");
+  infile_a_.Open(file_name, 32000, "rb");
+
+  if (test_mode_ == 0) {
+    WEBRTC_TRACE(kTraceStateInfo, kTraceAudioCoding, -1,
+                 "---------- TestAllCodecs ----------");
+  }
+
+  acm_a_->InitializeReceiver();
+  acm_b_->InitializeReceiver();
+
+  uint8_t num_encoders = acm_a_->NumberOfCodecs();
+  CodecInst my_codec_param;
+  for (uint8_t n = 0; n < num_encoders; n++) {
+    acm_b_->Codec(n, &my_codec_param);
+    if (!strcmp(my_codec_param.plname, "opus")) {
+      my_codec_param.channels = 1;
+    }
+    acm_b_->RegisterReceiveCodec(my_codec_param);
+  }
+
+  // Create and connect the channel
+  channel_a_to_b_ = new TestPack;
+  acm_a_->RegisterTransportCallback(channel_a_to_b_);
+  channel_a_to_b_->RegisterReceiverACM(acm_b_.get());
+
+  // All codecs are tested for all allowed sampling frequencies, rates and
+  // packet sizes.
+#ifdef WEBRTC_CODEC_G722
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  char codec_g722[] = "G722";
+  RegisterSendCodec('A', codec_g722, 16000, 64000, 160, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_g722, 16000, 64000, 320, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_g722, 16000, 64000, 480, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_g722, 16000, 64000, 640, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_g722, 16000, 64000, 800, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_g722, 16000, 64000, 960, 0);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+#endif
+#ifdef WEBRTC_CODEC_ILBC
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  char codec_ilbc[] = "ILBC";
+  RegisterSendCodec('A', codec_ilbc, 8000, 13300, 240, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_ilbc, 8000, 13300, 480, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_ilbc, 8000, 15200, 160, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_ilbc, 8000, 15200, 320, 0);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+#endif
+#if (defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX))
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  char codec_isac[] = "ISAC";
+  RegisterSendCodec('A', codec_isac, 16000, -1, 480, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_isac, 16000, -1, 960, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_isac, 16000, 15000, 480, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_isac, 16000, 32000, 960, kVariableSize);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+#endif
+#ifdef WEBRTC_CODEC_ISAC
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  RegisterSendCodec('A', codec_isac, 32000, -1, 960, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_isac, 32000, 56000, 960, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_isac, 32000, 37000, 960, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_isac, 32000, 32000, 960, kVariableSize);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+#endif
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  char codec_l16[] = "L16";
+  RegisterSendCodec('A', codec_l16, 8000, 128000, 80, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 8000, 128000, 160, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 8000, 128000, 240, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 8000, 128000, 320, 0);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  RegisterSendCodec('A', codec_l16, 16000, 256000, 160, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 16000, 256000, 320, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 16000, 256000, 480, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 16000, 256000, 640, 0);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  RegisterSendCodec('A', codec_l16, 32000, 512000, 320, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_l16, 32000, 512000, 640, 0);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  char codec_pcma[] = "PCMA";
+  RegisterSendCodec('A', codec_pcma, 8000, 64000, 80, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcma, 8000, 64000, 160, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcma, 8000, 64000, 240, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcma, 8000, 64000, 320, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcma, 8000, 64000, 400, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcma, 8000, 64000, 480, 0);
+  Run(channel_a_to_b_);
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  char codec_pcmu[] = "PCMU";
+  RegisterSendCodec('A', codec_pcmu, 8000, 64000, 80, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcmu, 8000, 64000, 160, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcmu, 8000, 64000, 240, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcmu, 8000, 64000, 320, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcmu, 8000, 64000, 400, 0);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_pcmu, 8000, 64000, 480, 0);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+#ifdef WEBRTC_CODEC_OPUS
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+  }
+  test_count_++;
+  OpenOutFile(test_count_);
+  char codec_opus[] = "OPUS";
+  RegisterSendCodec('A', codec_opus, 48000, 6000, 480, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_opus, 48000, 20000, 480*2, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_opus, 48000, 32000, 480*4, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_opus, 48000, 48000, 480, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_opus, 48000, 64000, 480*4, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_opus, 48000, 96000, 480*6, kVariableSize);
+  Run(channel_a_to_b_);
+  RegisterSendCodec('A', codec_opus, 48000, 500000, 480*2, kVariableSize);
+  Run(channel_a_to_b_);
+  outfile_b_.Close();
+#endif
+  if (test_mode_ != 0) {
+    printf("===============================================================\n");
+
+    /* Print out all codecs that were not tested in the run */
+    printf("The following codecs was not included in the test:\n");
+#ifndef WEBRTC_CODEC_G722
+    printf("   G.722\n");
+#endif
+#ifndef WEBRTC_CODEC_ILBC
+    printf("   iLBC\n");
+#endif
+#ifndef WEBRTC_CODEC_ISAC
+    printf("   ISAC float\n");
+#endif
+#ifndef WEBRTC_CODEC_ISACFX
+    printf("   ISAC fix\n");
+#endif
+
+    printf("\nTo complete the test, listen to the %d number of output files.\n",
+           test_count_);
+  }
+}
+
+// Register Codec to use in the test
+//
+// Input:  side             - which ACM to use, 'A' or 'B'
+//         codec_name       - name to use when register the codec
+//         sampling_freq_hz - sampling frequency in Herz
+//         rate             - bitrate in bytes
+//         packet_size      - packet size in samples
+//         extra_byte       - if extra bytes needed compared to the bitrate
+//                            used when registering, can be an internal header
+//                            set to kVariableSize if the codec is a variable
+//                            rate codec
+void TestAllCodecs::RegisterSendCodec(char side, char* codec_name,
+                                      int32_t sampling_freq_hz, int rate,
+                                      int packet_size, size_t extra_byte) {
+  if (test_mode_ != 0) {
+    // Print out codec and settings.
+    printf("codec: %s Freq: %d Rate: %d PackSize: %d\n", codec_name,
+           sampling_freq_hz, rate, packet_size);
+  }
+
+  // Store packet-size in samples, used to validate the received packet.
+  // If G.722, store half the size to compensate for the timestamp bug in the
+  // RFC for G.722.
+  // If iSAC runs in adaptive mode, packet size in samples can change on the
+  // fly, so we exclude this test by setting |packet_size_samples_| to -1.
+  if (!strcmp(codec_name, "G722")) {
+    packet_size_samples_ = packet_size / 2;
+  } else if (!strcmp(codec_name, "ISAC") && (rate == -1)) {
+    packet_size_samples_ = -1;
+  } else {
+    packet_size_samples_ = packet_size;
+  }
+
+  // Store the expected packet size in bytes, used to validate the received
+  // packet. If variable rate codec (extra_byte == -1), set to -1.
+  if (extra_byte != kVariableSize) {
+    // Add 0.875 to always round up to a whole byte
+    packet_size_bytes_ = static_cast<size_t>(
+        static_cast<float>(packet_size * rate) /
+        static_cast<float>(sampling_freq_hz * 8) + 0.875) + extra_byte;
+  } else {
+    // Packets will have a variable size.
+    packet_size_bytes_ = kVariableSize;
+  }
+
+  // Set pointer to the ACM where to register the codec.
+  AudioCodingModule* my_acm = NULL;
+  switch (side) {
+    case 'A': {
+      my_acm = acm_a_.get();
+      break;
+    }
+    case 'B': {
+      my_acm = acm_b_.get();
+      break;
+    }
+    default: {
+      break;
+    }
+  }
+  ASSERT_TRUE(my_acm != NULL);
+
+  // Get all codec parameters before registering
+  CodecInst my_codec_param;
+  CHECK_ERROR(AudioCodingModule::Codec(codec_name, &my_codec_param,
+                                       sampling_freq_hz, 1));
+  my_codec_param.rate = rate;
+  my_codec_param.pacsize = packet_size;
+  CHECK_ERROR(my_acm->RegisterSendCodec(my_codec_param));
+}
+
+void TestAllCodecs::Run(TestPack* channel) {
+  AudioFrame audio_frame;
+
+  int32_t out_freq_hz = outfile_b_.SamplingFrequency();
+  size_t receive_size;
+  uint32_t timestamp_diff;
+  channel->reset_payload_size();
+  int error_count = 0;
+
+  int counter = 0;
+  while (!infile_a_.EndOfFile()) {
+    // Add 10 msec to ACM.
+    infile_a_.Read10MsData(audio_frame);
+    CHECK_ERROR(acm_a_->Add10MsData(audio_frame));
+
+    // Verify that the received packet size matches the settings.
+    receive_size = channel->payload_size();
+    if (receive_size) {
+      if ((receive_size != packet_size_bytes_) &&
+          (packet_size_bytes_ != kVariableSize)) {
+        error_count++;
+      }
+
+      // Verify that the timestamp is updated with expected length. The counter
+      // is used to avoid problems when switching codec or frame size in the
+      // test.
+      timestamp_diff = channel->timestamp_diff();
+      if ((counter > 10) &&
+          (static_cast<int>(timestamp_diff) != packet_size_samples_) &&
+          (packet_size_samples_ > -1))
+        error_count++;
+    }
+
+    // Run received side of ACM.
+    CHECK_ERROR(acm_b_->PlayoutData10Ms(out_freq_hz, &audio_frame));
+
+    // Write output speech to file.
+    outfile_b_.Write10MsData(audio_frame.data_,
+                             audio_frame.samples_per_channel_);
+
+    // Update loop counter
+    counter++;
+  }
+
+  EXPECT_EQ(0, error_count);
+
+  if (infile_a_.EndOfFile()) {
+    infile_a_.Rewind();
+  }
+}
+
+void TestAllCodecs::OpenOutFile(int test_number) {
+  std::string filename = webrtc::test::OutputPath();
+  std::ostringstream test_number_str;
+  test_number_str << test_number;
+  filename += "testallcodecs_out_";
+  filename += test_number_str.str();
+  filename += ".pcm";
+  outfile_b_.Open(filename, 32000, "wb");
+}
+
+void TestAllCodecs::DisplaySendReceiveCodec() {
+  CodecInst my_codec_param;
+  printf("%s -> ", acm_a_->SendCodec()->plname);
+  acm_b_->ReceiveCodec(&my_codec_param);
+  printf("%s\n", my_codec_param.plname);
+}
+
+}  // namespace webrtc