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session-android/jni/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc
Moxie Marlinspike d83a3d71bc Support for Signal calls. 
Merge in RedPhone

// FREEBIE
2015-09-30 14:30:09 -07:00

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/*
* Copyright (c) 2013 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.
*/
// TODO(hlundin): The functionality in this file should be moved into one or
// several classes.
#include <assert.h>
#include <stdio.h>
#include <algorithm>
#include <iostream>
#include <string>
#include "google/gflags.h"
#include "webrtc/modules/audio_coding/codecs/pcm16b/include/pcm16b.h"
#include "webrtc/modules/audio_coding/neteq/interface/neteq.h"
#include "webrtc/modules/audio_coding/neteq/tools/input_audio_file.h"
#include "webrtc/modules/audio_coding/neteq/tools/packet.h"
#include "webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h"
#include "webrtc/modules/interface/module_common_types.h"
#include "webrtc/system_wrappers/interface/scoped_ptr.h"
#include "webrtc/system_wrappers/interface/trace.h"
#include "webrtc/test/testsupport/fileutils.h"
#include "webrtc/typedefs.h"
using webrtc::NetEq;
using webrtc::WebRtcRTPHeader;
// Flag validators.
static bool ValidatePayloadType(const char* flagname, int32_t value) {
if (value >= 0 && value <= 127) // Value is ok.
return true;
printf("Invalid value for --%s: %d\n", flagname, static_cast<int>(value));
return false;
}
// Define command line flags.
DEFINE_int32(pcmu, 0, "RTP payload type for PCM-u");
static const bool pcmu_dummy =
google::RegisterFlagValidator(&FLAGS_pcmu, &ValidatePayloadType);
DEFINE_int32(pcma, 8, "RTP payload type for PCM-a");
static const bool pcma_dummy =
google::RegisterFlagValidator(&FLAGS_pcma, &ValidatePayloadType);
DEFINE_int32(ilbc, 102, "RTP payload type for iLBC");
static const bool ilbc_dummy =
google::RegisterFlagValidator(&FLAGS_ilbc, &ValidatePayloadType);
DEFINE_int32(isac, 103, "RTP payload type for iSAC");
static const bool isac_dummy =
google::RegisterFlagValidator(&FLAGS_isac, &ValidatePayloadType);
DEFINE_int32(isac_swb, 104, "RTP payload type for iSAC-swb (32 kHz)");
static const bool isac_swb_dummy =
google::RegisterFlagValidator(&FLAGS_isac_swb, &ValidatePayloadType);
DEFINE_int32(pcm16b, 93, "RTP payload type for PCM16b-nb (8 kHz)");
static const bool pcm16b_dummy =
google::RegisterFlagValidator(&FLAGS_pcm16b, &ValidatePayloadType);
DEFINE_int32(pcm16b_wb, 94, "RTP payload type for PCM16b-wb (16 kHz)");
static const bool pcm16b_wb_dummy =
google::RegisterFlagValidator(&FLAGS_pcm16b_wb, &ValidatePayloadType);
DEFINE_int32(pcm16b_swb32, 95, "RTP payload type for PCM16b-swb32 (32 kHz)");
static const bool pcm16b_swb32_dummy =
google::RegisterFlagValidator(&FLAGS_pcm16b_swb32, &ValidatePayloadType);
DEFINE_int32(pcm16b_swb48, 96, "RTP payload type for PCM16b-swb48 (48 kHz)");
static const bool pcm16b_swb48_dummy =
google::RegisterFlagValidator(&FLAGS_pcm16b_swb48, &ValidatePayloadType);
DEFINE_int32(g722, 9, "RTP payload type for G.722");
static const bool g722_dummy =
google::RegisterFlagValidator(&FLAGS_g722, &ValidatePayloadType);
DEFINE_int32(avt, 106, "RTP payload type for AVT/DTMF");
static const bool avt_dummy =
google::RegisterFlagValidator(&FLAGS_avt, &ValidatePayloadType);
DEFINE_int32(red, 117, "RTP payload type for redundant audio (RED)");
static const bool red_dummy =
google::RegisterFlagValidator(&FLAGS_red, &ValidatePayloadType);
DEFINE_int32(cn_nb, 13, "RTP payload type for comfort noise (8 kHz)");
static const bool cn_nb_dummy =
google::RegisterFlagValidator(&FLAGS_cn_nb, &ValidatePayloadType);
DEFINE_int32(cn_wb, 98, "RTP payload type for comfort noise (16 kHz)");
static const bool cn_wb_dummy =
google::RegisterFlagValidator(&FLAGS_cn_wb, &ValidatePayloadType);
DEFINE_int32(cn_swb32, 99, "RTP payload type for comfort noise (32 kHz)");
static const bool cn_swb32_dummy =
google::RegisterFlagValidator(&FLAGS_cn_swb32, &ValidatePayloadType);
DEFINE_int32(cn_swb48, 100, "RTP payload type for comfort noise (48 kHz)");
static const bool cn_swb48_dummy =
google::RegisterFlagValidator(&FLAGS_cn_swb48, &ValidatePayloadType);
DEFINE_bool(codec_map, false, "Prints the mapping between RTP payload type and "
"codec");
DEFINE_string(replacement_audio_file, "",
"A PCM file that will be used to populate ""dummy"" RTP packets");
// Declaring helper functions (defined further down in this file).
std::string CodecName(webrtc::NetEqDecoder codec);
void RegisterPayloadTypes(NetEq* neteq);
void PrintCodecMapping();
size_t ReplacePayload(webrtc::test::InputAudioFile* replacement_audio_file,
webrtc::scoped_ptr<int16_t[]>* replacement_audio,
webrtc::scoped_ptr<uint8_t[]>* payload,
size_t* payload_mem_size_bytes,
size_t* frame_size_samples,
WebRtcRTPHeader* rtp_header,
const webrtc::test::Packet* next_packet);
int CodecSampleRate(uint8_t payload_type);
int CodecTimestampRate(uint8_t payload_type);
bool IsComfortNosie(uint8_t payload_type);
int main(int argc, char* argv[]) {
static const int kMaxChannels = 5;
static const int kMaxSamplesPerMs = 48000 / 1000;
static const int kOutputBlockSizeMs = 10;
std::string program_name = argv[0];
std::string usage = "Tool for decoding an RTP dump file using NetEq.\n"
"Run " + program_name + " --helpshort for usage.\n"
"Example usage:\n" + program_name +
" input.rtp output.pcm\n";
google::SetUsageMessage(usage);
google::ParseCommandLineFlags(&argc, &argv, true);
if (FLAGS_codec_map) {
PrintCodecMapping();
}
if (argc != 3) {
if (FLAGS_codec_map) {
// We have already printed the codec map. Just end the program.
return 0;
}
// Print usage information.
std::cout << google::ProgramUsage();
return 0;
}
printf("Input file: %s\n", argv[1]);
webrtc::scoped_ptr<webrtc::test::RtpFileSource> file_source(
webrtc::test::RtpFileSource::Create(argv[1]));
assert(file_source.get());
FILE* out_file = fopen(argv[2], "wb");
if (!out_file) {
std::cerr << "Cannot open output file " << argv[2] << std::endl;
exit(1);
}
std::cout << "Output file: " << argv[2] << std::endl;
// Check if a replacement audio file was provided, and if so, open it.
bool replace_payload = false;
webrtc::scoped_ptr<webrtc::test::InputAudioFile> replacement_audio_file;
if (!FLAGS_replacement_audio_file.empty()) {
replacement_audio_file.reset(
new webrtc::test::InputAudioFile(FLAGS_replacement_audio_file));
replace_payload = true;
}
// Enable tracing.
webrtc::Trace::CreateTrace();
webrtc::Trace::SetTraceFile((webrtc::test::OutputPath() +
"neteq_trace.txt").c_str());
webrtc::Trace::set_level_filter(webrtc::kTraceAll);
// Initialize NetEq instance.
int sample_rate_hz = 16000;
NetEq::Config config;
config.sample_rate_hz = sample_rate_hz;
NetEq* neteq = NetEq::Create(config);
RegisterPayloadTypes(neteq);
// Read first packet.
if (file_source->EndOfFile()) {
printf("Warning: RTP file is empty");
webrtc::Trace::ReturnTrace();
return 0;
}
webrtc::scoped_ptr<webrtc::test::Packet> packet(file_source->NextPacket());
bool packet_available = true;
// Set up variables for audio replacement if needed.
webrtc::scoped_ptr<webrtc::test::Packet> next_packet;
bool next_packet_available = false;
size_t input_frame_size_timestamps = 0;
webrtc::scoped_ptr<int16_t[]> replacement_audio;
webrtc::scoped_ptr<uint8_t[]> payload;
size_t payload_mem_size_bytes = 0;
if (replace_payload) {
// Initially assume that the frame size is 30 ms at the initial sample rate.
// This value will be replaced with the correct one as soon as two
// consecutive packets are found.
input_frame_size_timestamps = 30 * sample_rate_hz / 1000;
replacement_audio.reset(new int16_t[input_frame_size_timestamps]);
payload_mem_size_bytes = 2 * input_frame_size_timestamps;
payload.reset(new uint8_t[payload_mem_size_bytes]);
assert(!file_source->EndOfFile());
next_packet.reset(file_source->NextPacket());
next_packet_available = true;
}
// This is the main simulation loop.
// Set the simulation clock to start immediately with the first packet.
int time_now_ms = packet->time_ms();
int next_input_time_ms = time_now_ms;
int next_output_time_ms = time_now_ms;
if (time_now_ms % kOutputBlockSizeMs != 0) {
// Make sure that next_output_time_ms is rounded up to the next multiple
// of kOutputBlockSizeMs. (Legacy bit-exactness.)
next_output_time_ms +=
kOutputBlockSizeMs - time_now_ms % kOutputBlockSizeMs;
}
while (packet_available) {
// Check if it is time to insert packet.
while (time_now_ms >= next_input_time_ms && packet_available) {
assert(packet->virtual_payload_length_bytes() > 0);
// Parse RTP header.
WebRtcRTPHeader rtp_header;
packet->ConvertHeader(&rtp_header);
const uint8_t* payload_ptr = packet->payload();
size_t payload_len = packet->payload_length_bytes();
if (replace_payload) {
payload_len = ReplacePayload(replacement_audio_file.get(),
&replacement_audio,
&payload,
&payload_mem_size_bytes,
&input_frame_size_timestamps,
&rtp_header,
next_packet.get());
payload_ptr = payload.get();
}
int error =
neteq->InsertPacket(rtp_header,
payload_ptr,
static_cast<int>(payload_len),
packet->time_ms() * sample_rate_hz / 1000);
if (error != NetEq::kOK) {
std::cerr << "InsertPacket returned error code " << neteq->LastError()
<< std::endl;
}
// Get next packet from file.
if (!file_source->EndOfFile()) {
packet.reset(file_source->NextPacket());
} else {
packet_available = false;
}
if (replace_payload) {
// At this point |packet| contains the packet *after* |next_packet|.
// Swap Packet objects between |packet| and |next_packet|.
packet.swap(next_packet);
// Swap the status indicators unless they're already the same.
if (packet_available != next_packet_available) {
packet_available = !packet_available;
next_packet_available = !next_packet_available;
}
}
next_input_time_ms = packet->time_ms();
}
// Check if it is time to get output audio.
if (time_now_ms >= next_output_time_ms) {
static const int kOutDataLen = kOutputBlockSizeMs * kMaxSamplesPerMs *
kMaxChannels;
int16_t out_data[kOutDataLen];
int num_channels;
int samples_per_channel;
int error = neteq->GetAudio(kOutDataLen, out_data, &samples_per_channel,
&num_channels, NULL);
if (error != NetEq::kOK) {
std::cerr << "GetAudio returned error code " <<
neteq->LastError() << std::endl;
} else {
// Calculate sample rate from output size.
sample_rate_hz = 1000 * samples_per_channel / kOutputBlockSizeMs;
}
// Write to file.
// TODO(hlundin): Make writing to file optional.
size_t write_len = samples_per_channel * num_channels;
if (fwrite(out_data, sizeof(out_data[0]), write_len, out_file) !=
write_len) {
std::cerr << "Error while writing to file" << std::endl;
webrtc::Trace::ReturnTrace();
exit(1);
}
next_output_time_ms += kOutputBlockSizeMs;
}
// Advance time to next event.
time_now_ms = std::min(next_input_time_ms, next_output_time_ms);
}
std::cout << "Simulation done" << std::endl;
fclose(out_file);
delete neteq;
webrtc::Trace::ReturnTrace();
return 0;
}
// Help functions.
// Maps a codec type to a printable name string.
std::string CodecName(webrtc::NetEqDecoder codec) {
switch (codec) {
case webrtc::kDecoderPCMu:
return "PCM-u";
case webrtc::kDecoderPCMa:
return "PCM-a";
case webrtc::kDecoderILBC:
return "iLBC";
case webrtc::kDecoderISAC:
return "iSAC";
case webrtc::kDecoderISACswb:
return "iSAC-swb (32 kHz)";
case webrtc::kDecoderPCM16B:
return "PCM16b-nb (8 kHz)";
case webrtc::kDecoderPCM16Bwb:
return "PCM16b-wb (16 kHz)";
case webrtc::kDecoderPCM16Bswb32kHz:
return "PCM16b-swb32 (32 kHz)";
case webrtc::kDecoderPCM16Bswb48kHz:
return "PCM16b-swb48 (48 kHz)";
case webrtc::kDecoderG722:
return "G.722";
case webrtc::kDecoderRED:
return "redundant audio (RED)";
case webrtc::kDecoderAVT:
return "AVT/DTMF";
case webrtc::kDecoderCNGnb:
return "comfort noise (8 kHz)";
case webrtc::kDecoderCNGwb:
return "comfort noise (16 kHz)";
case webrtc::kDecoderCNGswb32kHz:
return "comfort noise (32 kHz)";
case webrtc::kDecoderCNGswb48kHz:
return "comfort noise (48 kHz)";
default:
assert(false);
return "undefined";
}
}
// Registers all decoders in |neteq|.
void RegisterPayloadTypes(NetEq* neteq) {
assert(neteq);
int error;
error = neteq->RegisterPayloadType(webrtc::kDecoderPCMu, FLAGS_pcmu);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_pcmu <<
" as " << CodecName(webrtc::kDecoderPCMu).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderPCMa, FLAGS_pcma);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_pcma <<
" as " << CodecName(webrtc::kDecoderPCMa).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderILBC, FLAGS_ilbc);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_ilbc <<
" as " << CodecName(webrtc::kDecoderILBC).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderISAC, FLAGS_isac);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_isac <<
" as " << CodecName(webrtc::kDecoderISAC).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderISACswb, FLAGS_isac_swb);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_isac_swb <<
" as " << CodecName(webrtc::kDecoderISACswb).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderPCM16B, FLAGS_pcm16b);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_pcm16b <<
" as " << CodecName(webrtc::kDecoderPCM16B).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderPCM16Bwb,
FLAGS_pcm16b_wb);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_pcm16b_wb <<
" as " << CodecName(webrtc::kDecoderPCM16Bwb).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderPCM16Bswb32kHz,
FLAGS_pcm16b_swb32);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_pcm16b_swb32 <<
" as " << CodecName(webrtc::kDecoderPCM16Bswb32kHz).c_str() <<
std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderPCM16Bswb48kHz,
FLAGS_pcm16b_swb48);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_pcm16b_swb48 <<
" as " << CodecName(webrtc::kDecoderPCM16Bswb48kHz).c_str() <<
std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderG722, FLAGS_g722);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_g722 <<
" as " << CodecName(webrtc::kDecoderG722).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderAVT, FLAGS_avt);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_avt <<
" as " << CodecName(webrtc::kDecoderAVT).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderRED, FLAGS_red);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_red <<
" as " << CodecName(webrtc::kDecoderRED).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderCNGnb, FLAGS_cn_nb);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_cn_nb <<
" as " << CodecName(webrtc::kDecoderCNGnb).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderCNGwb, FLAGS_cn_wb);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_cn_wb <<
" as " << CodecName(webrtc::kDecoderCNGwb).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderCNGswb32kHz,
FLAGS_cn_swb32);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_cn_swb32 <<
" as " << CodecName(webrtc::kDecoderCNGswb32kHz).c_str() << std::endl;
exit(1);
}
error = neteq->RegisterPayloadType(webrtc::kDecoderCNGswb48kHz,
FLAGS_cn_swb48);
if (error) {
std::cerr << "Cannot register payload type " << FLAGS_cn_swb48 <<
" as " << CodecName(webrtc::kDecoderCNGswb48kHz).c_str() << std::endl;
exit(1);
}
}
void PrintCodecMapping() {
std::cout << CodecName(webrtc::kDecoderPCMu).c_str() << ": " << FLAGS_pcmu <<
std::endl;
std::cout << CodecName(webrtc::kDecoderPCMa).c_str() << ": " << FLAGS_pcma <<
std::endl;
std::cout << CodecName(webrtc::kDecoderILBC).c_str() << ": " << FLAGS_ilbc <<
std::endl;
std::cout << CodecName(webrtc::kDecoderISAC).c_str() << ": " << FLAGS_isac <<
std::endl;
std::cout << CodecName(webrtc::kDecoderISACswb).c_str() << ": " <<
FLAGS_isac_swb << std::endl;
std::cout << CodecName(webrtc::kDecoderPCM16B).c_str() << ": " <<
FLAGS_pcm16b << std::endl;
std::cout << CodecName(webrtc::kDecoderPCM16Bwb).c_str() << ": " <<
FLAGS_pcm16b_wb << std::endl;
std::cout << CodecName(webrtc::kDecoderPCM16Bswb32kHz).c_str() << ": " <<
FLAGS_pcm16b_swb32 << std::endl;
std::cout << CodecName(webrtc::kDecoderPCM16Bswb48kHz).c_str() << ": " <<
FLAGS_pcm16b_swb48 << std::endl;
std::cout << CodecName(webrtc::kDecoderG722).c_str() << ": " << FLAGS_g722 <<
std::endl;
std::cout << CodecName(webrtc::kDecoderAVT).c_str() << ": " << FLAGS_avt <<
std::endl;
std::cout << CodecName(webrtc::kDecoderRED).c_str() << ": " << FLAGS_red <<
std::endl;
std::cout << CodecName(webrtc::kDecoderCNGnb).c_str() << ": " <<
FLAGS_cn_nb << std::endl;
std::cout << CodecName(webrtc::kDecoderCNGwb).c_str() << ": " <<
FLAGS_cn_wb << std::endl;
std::cout << CodecName(webrtc::kDecoderCNGswb32kHz).c_str() << ": " <<
FLAGS_cn_swb32 << std::endl;
std::cout << CodecName(webrtc::kDecoderCNGswb48kHz).c_str() << ": " <<
FLAGS_cn_swb48 << std::endl;
}
size_t ReplacePayload(webrtc::test::InputAudioFile* replacement_audio_file,
webrtc::scoped_ptr<int16_t[]>* replacement_audio,
webrtc::scoped_ptr<uint8_t[]>* payload,
size_t* payload_mem_size_bytes,
size_t* frame_size_samples,
WebRtcRTPHeader* rtp_header,
const webrtc::test::Packet* next_packet) {
size_t payload_len = 0;
// Check for CNG.
if (IsComfortNosie(rtp_header->header.payloadType)) {
// If CNG, simply insert a zero-energy one-byte payload.
if (*payload_mem_size_bytes < 1) {
(*payload).reset(new uint8_t[1]);
*payload_mem_size_bytes = 1;
}
(*payload)[0] = 127; // Max attenuation of CNG.
payload_len = 1;
} else {
assert(next_packet->virtual_payload_length_bytes() > 0);
// Check if payload length has changed.
if (next_packet->header().sequenceNumber ==
rtp_header->header.sequenceNumber + 1) {
if (*frame_size_samples !=
next_packet->header().timestamp - rtp_header->header.timestamp) {
*frame_size_samples =
next_packet->header().timestamp - rtp_header->header.timestamp;
(*replacement_audio).reset(
new int16_t[*frame_size_samples]);
*payload_mem_size_bytes = 2 * *frame_size_samples;
(*payload).reset(new uint8_t[*payload_mem_size_bytes]);
}
}
// Get new speech.
assert((*replacement_audio).get());
if (CodecTimestampRate(rtp_header->header.payloadType) !=
CodecSampleRate(rtp_header->header.payloadType) ||
rtp_header->header.payloadType == FLAGS_red ||
rtp_header->header.payloadType == FLAGS_avt) {
// Some codecs have different sample and timestamp rates. And neither
// RED nor DTMF is supported for replacement.
std::cerr << "Codec not supported for audio replacement." <<
std::endl;
webrtc::Trace::ReturnTrace();
exit(1);
}
assert(*frame_size_samples > 0);
if (!replacement_audio_file->Read(*frame_size_samples,
(*replacement_audio).get())) {
std::cerr << "Could not read replacement audio file." << std::endl;
webrtc::Trace::ReturnTrace();
exit(1);
}
// Encode it as PCM16.
assert((*payload).get());
payload_len = WebRtcPcm16b_Encode((*replacement_audio).get(),
static_cast<int16_t>(*frame_size_samples),
(*payload).get());
assert(payload_len == 2 * *frame_size_samples);
// Change payload type to PCM16.
switch (CodecSampleRate(rtp_header->header.payloadType)) {
case 8000:
rtp_header->header.payloadType = FLAGS_pcm16b;
break;
case 16000:
rtp_header->header.payloadType = FLAGS_pcm16b_wb;
break;
case 32000:
rtp_header->header.payloadType = FLAGS_pcm16b_swb32;
break;
case 48000:
rtp_header->header.payloadType = FLAGS_pcm16b_swb48;
break;
default:
std::cerr << "Payload type " <<
static_cast<int>(rtp_header->header.payloadType) <<
" not supported or unknown." << std::endl;
webrtc::Trace::ReturnTrace();
exit(1);
}
}
return payload_len;
}
int CodecSampleRate(uint8_t payload_type) {
if (payload_type == FLAGS_pcmu ||
payload_type == FLAGS_pcma ||
payload_type == FLAGS_ilbc ||
payload_type == FLAGS_pcm16b ||
payload_type == FLAGS_cn_nb) {
return 8000;
} else if (payload_type == FLAGS_isac ||
payload_type == FLAGS_pcm16b_wb ||
payload_type == FLAGS_g722 ||
payload_type == FLAGS_cn_wb) {
return 16000;
} else if (payload_type == FLAGS_isac_swb ||
payload_type == FLAGS_pcm16b_swb32 ||
payload_type == FLAGS_cn_swb32) {
return 32000;
} else if (payload_type == FLAGS_pcm16b_swb48 ||
payload_type == FLAGS_cn_swb48) {
return 48000;
} else if (payload_type == FLAGS_avt ||
payload_type == FLAGS_red) {
return 0;
} else {
return -1;
}
}
int CodecTimestampRate(uint8_t payload_type) {
if (payload_type == FLAGS_g722) {
return 8000;
} else {
return CodecSampleRate(payload_type);
}
}
bool IsComfortNosie(uint8_t payload_type) {
if (payload_type == FLAGS_cn_nb ||
payload_type == FLAGS_cn_wb ||
payload_type == FLAGS_cn_swb32 ||
payload_type == FLAGS_cn_swb48) {
return true;
} else {
return false;
}
}
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