audio_coding: remove "main" directory

webrtc/modules/audio_coding/main/acm2/acm_codec_database.cc

-/*
- *  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.
- */
-
-/*
- * This file generates databases with information about all supported audio
- * codecs.
- */
-
-// TODO(tlegrand): Change constant input pointers in all functions to constant
-// references, where appropriate.
-#include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h"
-
-#include <assert.h>
-
-#include "webrtc/base/checks.h"
-#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
-#include "webrtc/system_wrappers/include/trace.h"
-
-namespace webrtc {
-
-namespace acm2 {
-
-namespace {
-
-// Checks if the bitrate is valid for iSAC.
-bool IsISACRateValid(int rate) {
-  return (rate == -1) || ((rate <= 56000) && (rate >= 10000));
-}
-
-// Checks if the bitrate is valid for iLBC.
-bool IsILBCRateValid(int rate, int frame_size_samples) {
-  if (((frame_size_samples == 240) || (frame_size_samples == 480)) &&
-      (rate == 13300)) {
-    return true;
-  } else if (((frame_size_samples == 160) || (frame_size_samples == 320)) &&
-      (rate == 15200)) {
-    return true;
-  } else {
-    return false;
-  }
-}
-
-// Checks if the bitrate is valid for Opus.
-bool IsOpusRateValid(int rate) {
-  return (rate >= 6000) && (rate <= 510000);
-}
-
-}  // namespace
-
-// Not yet used payload-types.
-// 83,  82,  81, 80, 79,  78,  77,  76,  75,  74,  73,  72,  71,  70,  69, 68,
-// 67, 66, 65
-
-const CodecInst ACMCodecDB::database_[] = {
-#if (defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX))
-  {103, "ISAC", 16000, kIsacPacSize480, 1, kIsacWbDefaultRate},
-# if (defined(WEBRTC_CODEC_ISAC))
-  {104, "ISAC", 32000, kIsacPacSize960, 1, kIsacSwbDefaultRate},
-# endif
-#endif
-  // Mono
-  {107, "L16", 8000, 80, 1, 128000},
-  {108, "L16", 16000, 160, 1, 256000},
-  {109, "L16", 32000, 320, 1, 512000},
-  // Stereo
-  {111, "L16", 8000, 80, 2, 128000},
-  {112, "L16", 16000, 160, 2, 256000},
-  {113, "L16", 32000, 320, 2, 512000},
-  // G.711, PCM mu-law and A-law.
-  // Mono
-  {0, "PCMU", 8000, 160, 1, 64000},
-  {8, "PCMA", 8000, 160, 1, 64000},
-  // Stereo
-  {110, "PCMU", 8000, 160, 2, 64000},
-  {118, "PCMA", 8000, 160, 2, 64000},
-#ifdef WEBRTC_CODEC_ILBC
-  {102, "ILBC", 8000, 240, 1, 13300},
-#endif
-#ifdef WEBRTC_CODEC_G722
-  // Mono
-  {9, "G722", 16000, 320, 1, 64000},
-  // Stereo
-  {119, "G722", 16000, 320, 2, 64000},
-#endif
-#ifdef WEBRTC_CODEC_OPUS
-  // Opus internally supports 48, 24, 16, 12, 8 kHz.
-  // Mono and stereo.
-  {120, "opus", 48000, 960, 2, 64000},
-#endif
-  // Comfort noise for four different sampling frequencies.
-  {13, "CN", 8000, 240, 1, 0},
-  {98, "CN", 16000, 480, 1, 0},
-  {99, "CN", 32000, 960, 1, 0},
-#ifdef ENABLE_48000_HZ
-  {100, "CN", 48000, 1440, 1, 0},
-#endif
-  {106, "telephone-event", 8000, 240, 1, 0},
-#ifdef WEBRTC_CODEC_RED
-  {127, "red", 8000, 0, 1, 0},
-#endif
-  // To prevent compile errors due to trailing commas.
-  {-1, "Null", -1, -1, -1, -1}
-};
-
-// Create database with all codec settings at compile time.
-// Each entry needs the following parameters in the given order:
-// Number of allowed packet sizes, a vector with the allowed packet sizes,
-// Basic block samples, max number of channels that are supported.
-const ACMCodecDB::CodecSettings ACMCodecDB::codec_settings_[] = {
-#if (defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX))
-    {2, {kIsacPacSize480, kIsacPacSize960}, 0, 1},
-# if (defined(WEBRTC_CODEC_ISAC))
-    {1, {kIsacPacSize960}, 0, 1},
-# endif
-#endif
-    // Mono
-    {4, {80, 160, 240, 320}, 0, 2},
-    {4, {160, 320, 480, 640}, 0, 2},
-    {2, {320, 640}, 0, 2},
-    // Stereo
-    {4, {80, 160, 240, 320}, 0, 2},
-    {4, {160, 320, 480, 640}, 0, 2},
-    {2, {320, 640}, 0, 2},
-    // G.711, PCM mu-law and A-law.
-    // Mono
-    {6, {80, 160, 240, 320, 400, 480}, 0, 2},
-    {6, {80, 160, 240, 320, 400, 480}, 0, 2},
-    // Stereo
-    {6, {80, 160, 240, 320, 400, 480}, 0, 2},
-    {6, {80, 160, 240, 320, 400, 480}, 0, 2},
-#ifdef WEBRTC_CODEC_ILBC
-    {4, {160, 240, 320, 480}, 0, 1},
-#endif
-#ifdef WEBRTC_CODEC_G722
-    // Mono
-    {6, {160, 320, 480, 640, 800, 960}, 0, 2},
-    // Stereo
-    {6, {160, 320, 480, 640, 800, 960}, 0, 2},
-#endif
-#ifdef WEBRTC_CODEC_OPUS
-    // Opus supports frames shorter than 10ms,
-    // but it doesn't help us to use them.
-    // Mono and stereo.
-    {4, {480, 960, 1920, 2880}, 0, 2},
-#endif
-    // Comfort noise for three different sampling frequencies.
-    {1, {240}, 240, 1},
-    {1, {480}, 480, 1},
-    {1, {960}, 960, 1},
-#ifdef ENABLE_48000_HZ
-    {1, {1440}, 1440, 1},
-#endif
-    {1, {240}, 240, 1},
-#ifdef WEBRTC_CODEC_RED
-    {1, {0}, 0, 1},
-#endif
-    // To prevent compile errors due to trailing commas.
-    {-1, {-1}, -1, -1}
-};
-
-// Create a database of all NetEQ decoders at compile time.
-const NetEqDecoder ACMCodecDB::neteq_decoders_[] = {
-#if (defined(WEBRTC_CODEC_ISAC) || defined(WEBRTC_CODEC_ISACFX))
-    NetEqDecoder::kDecoderISAC,
-# if (defined(WEBRTC_CODEC_ISAC))
-    NetEqDecoder::kDecoderISACswb,
-# endif
-#endif
-    // Mono
-    NetEqDecoder::kDecoderPCM16B, NetEqDecoder::kDecoderPCM16Bwb,
-    NetEqDecoder::kDecoderPCM16Bswb32kHz,
-    // Stereo
-    NetEqDecoder::kDecoderPCM16B_2ch, NetEqDecoder::kDecoderPCM16Bwb_2ch,
-    NetEqDecoder::kDecoderPCM16Bswb32kHz_2ch,
-    // G.711, PCM mu-las and A-law.
-    // Mono
-    NetEqDecoder::kDecoderPCMu, NetEqDecoder::kDecoderPCMa,
-    // Stereo
-    NetEqDecoder::kDecoderPCMu_2ch, NetEqDecoder::kDecoderPCMa_2ch,
-#ifdef WEBRTC_CODEC_ILBC
-    NetEqDecoder::kDecoderILBC,
-#endif
-#ifdef WEBRTC_CODEC_G722
-    // Mono
-    NetEqDecoder::kDecoderG722,
-    // Stereo
-    NetEqDecoder::kDecoderG722_2ch,
-#endif
-#ifdef WEBRTC_CODEC_OPUS
-    // Mono and stereo.
-    NetEqDecoder::kDecoderOpus,
-#endif
-    // Comfort noise for three different sampling frequencies.
-    NetEqDecoder::kDecoderCNGnb, NetEqDecoder::kDecoderCNGwb,
-    NetEqDecoder::kDecoderCNGswb32kHz,
-#ifdef ENABLE_48000_HZ
-    NetEqDecoder::kDecoderCNGswb48kHz,
-#endif
-    NetEqDecoder::kDecoderAVT,
-#ifdef WEBRTC_CODEC_RED
-    NetEqDecoder::kDecoderRED,
-#endif
-};
-
-// Enumerator for error codes when asking for codec database id.
-enum {
-  kInvalidCodec = -10,
-  kInvalidPayloadtype = -30,
-  kInvalidPacketSize = -40,
-  kInvalidRate = -50
-};
-
-// Gets the codec id number from the database. If there is some mismatch in
-// the codec settings, the function will return an error code.
-// NOTE! The first mismatch found will generate the return value.
-int ACMCodecDB::CodecNumber(const CodecInst& codec_inst) {
-  // Look for a matching codec in the database.
-  int codec_id = CodecId(codec_inst);
-
-  // Checks if we found a matching codec.
-  if (codec_id == -1) {
-    return kInvalidCodec;
-  }
-
-  // Checks the validity of payload type
-  if (!RentACodec::IsPayloadTypeValid(codec_inst.pltype)) {
-    return kInvalidPayloadtype;
-  }
-
-  // Comfort Noise is special case, packet-size & rate is not checked.
-  if (STR_CASE_CMP(database_[codec_id].plname, "CN") == 0) {
-    return codec_id;
-  }
-
-  // RED is special case, packet-size & rate is not checked.
-  if (STR_CASE_CMP(database_[codec_id].plname, "red") == 0) {
-    return codec_id;
-  }
-
-  // Checks the validity of packet size.
-  if (codec_settings_[codec_id].num_packet_sizes > 0) {
-    bool packet_size_ok = false;
-    int i;
-    int packet_size_samples;
-    for (i = 0; i < codec_settings_[codec_id].num_packet_sizes; i++) {
-      packet_size_samples =
-          codec_settings_[codec_id].packet_sizes_samples[i];
-      if (codec_inst.pacsize == packet_size_samples) {
-        packet_size_ok = true;
-        break;
-      }
-    }
-
-    if (!packet_size_ok) {
-      return kInvalidPacketSize;
-    }
-  }
-
-  if (codec_inst.pacsize < 1) {
-    return kInvalidPacketSize;
-  }
-
-  // Check the validity of rate. Codecs with multiple rates have their own
-  // function for this.
-  if (STR_CASE_CMP("isac", codec_inst.plname) == 0) {
-    return IsISACRateValid(codec_inst.rate) ? codec_id : kInvalidRate;
-  } else if (STR_CASE_CMP("ilbc", codec_inst.plname) == 0) {
-    return IsILBCRateValid(codec_inst.rate, codec_inst.pacsize)
-        ? codec_id : kInvalidRate;
-  } else if (STR_CASE_CMP("opus", codec_inst.plname) == 0) {
-    return IsOpusRateValid(codec_inst.rate)
-        ? codec_id : kInvalidRate;
-  }
-
-  return database_[codec_id].rate == codec_inst.rate ? codec_id : kInvalidRate;
-}
-
-// Looks for a matching payload name, frequency, and channels in the
-// codec list. Need to check all three since some codecs have several codec
-// entries with different frequencies and/or channels.
-// Does not check other codec settings, such as payload type and packet size.
-// Returns the id of the codec, or -1 if no match is found.
-int ACMCodecDB::CodecId(const CodecInst& codec_inst) {
-  return (CodecId(codec_inst.plname, codec_inst.plfreq,
-                  codec_inst.channels));
-}
-
-int ACMCodecDB::CodecId(const char* payload_name, int frequency, int channels) {
-  for (const CodecInst& ci : RentACodec::Database()) {
-    bool name_match = false;
-    bool frequency_match = false;
-    bool channels_match = false;
-
-    // Payload name, sampling frequency and number of channels need to match.
-    // NOTE! If |frequency| is -1, the frequency is not applicable, and is
-    // always treated as true, like for RED.
-    name_match = (STR_CASE_CMP(ci.plname, payload_name) == 0);
-    frequency_match = (frequency == ci.plfreq) || (frequency == -1);
-    // The number of channels must match for all codecs but Opus.
-    if (STR_CASE_CMP(payload_name, "opus") != 0) {
-      channels_match = (channels == ci.channels);
-    } else {
-      // For opus we just check that number of channels is valid.
-      channels_match = (channels == 1 || channels == 2);
-    }
-
-    if (name_match && frequency_match && channels_match) {
-      // We have found a matching codec in the list.
-      return &ci - RentACodec::Database().data();
-    }
-  }
-
-  // We didn't find a matching codec.
-  return -1;
-}
-// Gets codec id number from database for the receiver.
-int ACMCodecDB::ReceiverCodecNumber(const CodecInst& codec_inst) {
-  // Look for a matching codec in the database.
-  return CodecId(codec_inst);
-}
-
-}  // namespace acm2
-
-}  // namespace webrtc