mirror of
https://github.com/oxen-io/session-android.git
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Support for Signal calls.
Merge in RedPhone // FREEBIE
This commit is contained in:
Moxie Marlinspike
617
jni/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc
Normal file
617
jni/webrtc/modules/audio_coding/neteq/tools/neteq_rtpplay.cc
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@@ -0,0 +1,617 @@
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/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// TODO(hlundin): The functionality in this file should be moved into one or
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// several classes.
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#include <assert.h>
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#include <stdio.h>
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#include <algorithm>
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#include <iostream>
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#include <string>
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#include "google/gflags.h"
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#include "webrtc/modules/audio_coding/codecs/pcm16b/include/pcm16b.h"
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#include "webrtc/modules/audio_coding/neteq/interface/neteq.h"
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#include "webrtc/modules/audio_coding/neteq/tools/input_audio_file.h"
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#include "webrtc/modules/audio_coding/neteq/tools/packet.h"
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#include "webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h"
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#include "webrtc/modules/interface/module_common_types.h"
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#include "webrtc/system_wrappers/interface/scoped_ptr.h"
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#include "webrtc/system_wrappers/interface/trace.h"
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#include "webrtc/test/testsupport/fileutils.h"
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#include "webrtc/typedefs.h"
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using webrtc::NetEq;
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using webrtc::WebRtcRTPHeader;
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// Flag validators.
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static bool ValidatePayloadType(const char* flagname, int32_t value) {
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if (value >= 0 && value <= 127) // Value is ok.
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return true;
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printf("Invalid value for --%s: %d\n", flagname, static_cast<int>(value));
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return false;
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}
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// Define command line flags.
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DEFINE_int32(pcmu, 0, "RTP payload type for PCM-u");
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static const bool pcmu_dummy =
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google::RegisterFlagValidator(&FLAGS_pcmu, &ValidatePayloadType);
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DEFINE_int32(pcma, 8, "RTP payload type for PCM-a");
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static const bool pcma_dummy =
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google::RegisterFlagValidator(&FLAGS_pcma, &ValidatePayloadType);
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DEFINE_int32(ilbc, 102, "RTP payload type for iLBC");
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static const bool ilbc_dummy =
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google::RegisterFlagValidator(&FLAGS_ilbc, &ValidatePayloadType);
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DEFINE_int32(isac, 103, "RTP payload type for iSAC");
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static const bool isac_dummy =
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google::RegisterFlagValidator(&FLAGS_isac, &ValidatePayloadType);
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DEFINE_int32(isac_swb, 104, "RTP payload type for iSAC-swb (32 kHz)");
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static const bool isac_swb_dummy =
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google::RegisterFlagValidator(&FLAGS_isac_swb, &ValidatePayloadType);
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DEFINE_int32(pcm16b, 93, "RTP payload type for PCM16b-nb (8 kHz)");
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static const bool pcm16b_dummy =
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google::RegisterFlagValidator(&FLAGS_pcm16b, &ValidatePayloadType);
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DEFINE_int32(pcm16b_wb, 94, "RTP payload type for PCM16b-wb (16 kHz)");
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static const bool pcm16b_wb_dummy =
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google::RegisterFlagValidator(&FLAGS_pcm16b_wb, &ValidatePayloadType);
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DEFINE_int32(pcm16b_swb32, 95, "RTP payload type for PCM16b-swb32 (32 kHz)");
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static const bool pcm16b_swb32_dummy =
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google::RegisterFlagValidator(&FLAGS_pcm16b_swb32, &ValidatePayloadType);
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DEFINE_int32(pcm16b_swb48, 96, "RTP payload type for PCM16b-swb48 (48 kHz)");
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static const bool pcm16b_swb48_dummy =
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google::RegisterFlagValidator(&FLAGS_pcm16b_swb48, &ValidatePayloadType);
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DEFINE_int32(g722, 9, "RTP payload type for G.722");
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static const bool g722_dummy =
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google::RegisterFlagValidator(&FLAGS_g722, &ValidatePayloadType);
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DEFINE_int32(avt, 106, "RTP payload type for AVT/DTMF");
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static const bool avt_dummy =
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google::RegisterFlagValidator(&FLAGS_avt, &ValidatePayloadType);
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DEFINE_int32(red, 117, "RTP payload type for redundant audio (RED)");
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static const bool red_dummy =
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google::RegisterFlagValidator(&FLAGS_red, &ValidatePayloadType);
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DEFINE_int32(cn_nb, 13, "RTP payload type for comfort noise (8 kHz)");
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static const bool cn_nb_dummy =
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google::RegisterFlagValidator(&FLAGS_cn_nb, &ValidatePayloadType);
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DEFINE_int32(cn_wb, 98, "RTP payload type for comfort noise (16 kHz)");
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static const bool cn_wb_dummy =
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google::RegisterFlagValidator(&FLAGS_cn_wb, &ValidatePayloadType);
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DEFINE_int32(cn_swb32, 99, "RTP payload type for comfort noise (32 kHz)");
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static const bool cn_swb32_dummy =
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google::RegisterFlagValidator(&FLAGS_cn_swb32, &ValidatePayloadType);
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DEFINE_int32(cn_swb48, 100, "RTP payload type for comfort noise (48 kHz)");
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static const bool cn_swb48_dummy =
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google::RegisterFlagValidator(&FLAGS_cn_swb48, &ValidatePayloadType);
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DEFINE_bool(codec_map, false, "Prints the mapping between RTP payload type and "
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"codec");
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DEFINE_string(replacement_audio_file, "",
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"A PCM file that will be used to populate ""dummy"" RTP packets");
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// Declaring helper functions (defined further down in this file).
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std::string CodecName(webrtc::NetEqDecoder codec);
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void RegisterPayloadTypes(NetEq* neteq);
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void PrintCodecMapping();
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size_t ReplacePayload(webrtc::test::InputAudioFile* replacement_audio_file,
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webrtc::scoped_ptr<int16_t[]>* replacement_audio,
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webrtc::scoped_ptr<uint8_t[]>* payload,
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size_t* payload_mem_size_bytes,
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size_t* frame_size_samples,
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WebRtcRTPHeader* rtp_header,
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const webrtc::test::Packet* next_packet);
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int CodecSampleRate(uint8_t payload_type);
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int CodecTimestampRate(uint8_t payload_type);
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bool IsComfortNosie(uint8_t payload_type);
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int main(int argc, char* argv[]) {
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static const int kMaxChannels = 5;
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static const int kMaxSamplesPerMs = 48000 / 1000;
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static const int kOutputBlockSizeMs = 10;
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std::string program_name = argv[0];
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std::string usage = "Tool for decoding an RTP dump file using NetEq.\n"
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"Run " + program_name + " --helpshort for usage.\n"
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"Example usage:\n" + program_name +
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" input.rtp output.pcm\n";
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google::SetUsageMessage(usage);
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google::ParseCommandLineFlags(&argc, &argv, true);
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if (FLAGS_codec_map) {
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PrintCodecMapping();
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}
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if (argc != 3) {
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if (FLAGS_codec_map) {
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// We have already printed the codec map. Just end the program.
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return 0;
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}
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// Print usage information.
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std::cout << google::ProgramUsage();
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return 0;
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}
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printf("Input file: %s\n", argv[1]);
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webrtc::scoped_ptr<webrtc::test::RtpFileSource> file_source(
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webrtc::test::RtpFileSource::Create(argv[1]));
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assert(file_source.get());
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FILE* out_file = fopen(argv[2], "wb");
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if (!out_file) {
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std::cerr << "Cannot open output file " << argv[2] << std::endl;
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exit(1);
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}
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std::cout << "Output file: " << argv[2] << std::endl;
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// Check if a replacement audio file was provided, and if so, open it.
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bool replace_payload = false;
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webrtc::scoped_ptr<webrtc::test::InputAudioFile> replacement_audio_file;
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if (!FLAGS_replacement_audio_file.empty()) {
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replacement_audio_file.reset(
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new webrtc::test::InputAudioFile(FLAGS_replacement_audio_file));
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replace_payload = true;
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}
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// Enable tracing.
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webrtc::Trace::CreateTrace();
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webrtc::Trace::SetTraceFile((webrtc::test::OutputPath() +
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"neteq_trace.txt").c_str());
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webrtc::Trace::set_level_filter(webrtc::kTraceAll);
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// Initialize NetEq instance.
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int sample_rate_hz = 16000;
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NetEq::Config config;
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config.sample_rate_hz = sample_rate_hz;
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NetEq* neteq = NetEq::Create(config);
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RegisterPayloadTypes(neteq);
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// Read first packet.
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if (file_source->EndOfFile()) {
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printf("Warning: RTP file is empty");
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webrtc::Trace::ReturnTrace();
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return 0;
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}
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webrtc::scoped_ptr<webrtc::test::Packet> packet(file_source->NextPacket());
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bool packet_available = true;
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// Set up variables for audio replacement if needed.
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webrtc::scoped_ptr<webrtc::test::Packet> next_packet;
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bool next_packet_available = false;
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size_t input_frame_size_timestamps = 0;
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webrtc::scoped_ptr<int16_t[]> replacement_audio;
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webrtc::scoped_ptr<uint8_t[]> payload;
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size_t payload_mem_size_bytes = 0;
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if (replace_payload) {
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// Initially assume that the frame size is 30 ms at the initial sample rate.
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// This value will be replaced with the correct one as soon as two
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// consecutive packets are found.
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input_frame_size_timestamps = 30 * sample_rate_hz / 1000;
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replacement_audio.reset(new int16_t[input_frame_size_timestamps]);
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payload_mem_size_bytes = 2 * input_frame_size_timestamps;
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payload.reset(new uint8_t[payload_mem_size_bytes]);
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assert(!file_source->EndOfFile());
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next_packet.reset(file_source->NextPacket());
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next_packet_available = true;
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}
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// This is the main simulation loop.
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// Set the simulation clock to start immediately with the first packet.
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int time_now_ms = packet->time_ms();
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int next_input_time_ms = time_now_ms;
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int next_output_time_ms = time_now_ms;
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if (time_now_ms % kOutputBlockSizeMs != 0) {
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// Make sure that next_output_time_ms is rounded up to the next multiple
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// of kOutputBlockSizeMs. (Legacy bit-exactness.)
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next_output_time_ms +=
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kOutputBlockSizeMs - time_now_ms % kOutputBlockSizeMs;
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}
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while (packet_available) {
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// Check if it is time to insert packet.
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while (time_now_ms >= next_input_time_ms && packet_available) {
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assert(packet->virtual_payload_length_bytes() > 0);
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// Parse RTP header.
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WebRtcRTPHeader rtp_header;
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packet->ConvertHeader(&rtp_header);
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const uint8_t* payload_ptr = packet->payload();
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size_t payload_len = packet->payload_length_bytes();
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if (replace_payload) {
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payload_len = ReplacePayload(replacement_audio_file.get(),
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&replacement_audio,
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&payload,
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&payload_mem_size_bytes,
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&input_frame_size_timestamps,
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&rtp_header,
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next_packet.get());
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payload_ptr = payload.get();
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}
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int error =
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neteq->InsertPacket(rtp_header,
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payload_ptr,
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static_cast<int>(payload_len),
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packet->time_ms() * sample_rate_hz / 1000);
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if (error != NetEq::kOK) {
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std::cerr << "InsertPacket returned error code " << neteq->LastError()
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<< std::endl;
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}
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// Get next packet from file.
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if (!file_source->EndOfFile()) {
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packet.reset(file_source->NextPacket());
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} else {
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packet_available = false;
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}
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if (replace_payload) {
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// At this point |packet| contains the packet *after* |next_packet|.
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// Swap Packet objects between |packet| and |next_packet|.
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packet.swap(next_packet);
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// Swap the status indicators unless they're already the same.
|
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if (packet_available != next_packet_available) {
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packet_available = !packet_available;
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next_packet_available = !next_packet_available;
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}
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}
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next_input_time_ms = packet->time_ms();
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}
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|
||||
// Check if it is time to get output audio.
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if (time_now_ms >= next_output_time_ms) {
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static const int kOutDataLen = kOutputBlockSizeMs * kMaxSamplesPerMs *
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kMaxChannels;
|
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int16_t out_data[kOutDataLen];
|
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int num_channels;
|
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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 {
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||||
// Calculate sample rate from output size.
|
||||
sample_rate_hz = 1000 * samples_per_channel / kOutputBlockSizeMs;
|
||||
}
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|
||||
// 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;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user