#include <PerfStat.h>#include <QtCore/QLoggingCategory>#include <AudioConstants.h> #include "OpusDecoder.h" static QLoggingCategory decoder("AthenaOpusDecoder"); static QString error_to_string(int error) { switch (error) { case OPUS_OK: return "OK"; case OPUS_BAD_ARG: return "One or more invalid/out of range arguments."; case OPUS_BUFFER_TOO_SMALL: return "The mode struct passed is invalid."; case OPUS_INTERNAL_ERROR: return "An internal error was detected."; case OPUS_INVALID_PACKET: return "The compressed data passed is corrupted."; case OPUS_UNIMPLEMENTED: return "Invalid/unsupported request number."; case OPUS_INVALID_STATE: return "An encoder or decoder structure is invalid or already freed."; default: return QString("Unknown error code: %i").arg(error); }} AthenaOpusDecoder::AthenaOpusDecoder(int sampleRate, int numChannels){ int error; _opus_sample_rate = sampleRate; _opus_num_channels = numChannels; _decoder = opus_decoder_create(sampleRate, numChannels, &error); if ( error != OPUS_OK ) { qCCritical(decoder) << "Failed to initialize Opus encoder: " << error_to_string(error); _decoder = nullptr; return; } qCDebug(decoder) << "Opus decoder initialized, sampleRate = " << sampleRate << "; numChannels = " << numChannels;} AthenaOpusDecoder::~AthenaOpusDecoder(){ if ( _decoder ) opus_decoder_destroy(_decoder); } void AthenaOpusDecoder::decode(const QByteArray &encodedBuffer, QByteArray &decodedBuffer){ assert(_decoder); PerformanceTimer perfTimer("AthenaOpusDecoder::decode"); // The audio system encodes and decodes always in fixed size chunks int buffer_size = AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL * static_cast<int>(sizeof(int16_t)) * _opus_num_channels; decodedBuffer.resize( buffer_size ); int buffer_frames = decodedBuffer.size() / _opus_num_channels / static_cast<int>(sizeof( opus_int16 )); qCDebug(decoder) << "Opus decode: encodedBytes = " << encodedBuffer.length() << "; decodedBufferBytes = " << decodedBuffer.size() << "; frameCount = " << buffer_frames; int decoded_frames = opus_decode( _decoder, reinterpret_cast<const unsigned char*>(encodedBuffer.data()), encodedBuffer.length(), reinterpret_cast<opus_int16*>(decodedBuffer.data()), buffer_frames, 0 ); if ( decoded_frames >= 0 ) { qCDebug(decoder) << "Decoded " << decoded_frames << " Opus frames, " << buffer_frames << " expected"; if ( decoded_frames < buffer_frames ) { qCWarning(decoder) << "Opus decoder returned " << decoded_frames << ", but " << buffer_frames << " were expected!"; int start = decoded_frames * static_cast<int>(sizeof(int16_t)) * _opus_num_channels; memset( &decodedBuffer.data()[start], 0, static_cast<size_t>(decodedBuffer.length() - start)); } else if ( decoded_frames > buffer_frames ) { // This should never happen qCCritical(decoder) << "Opus decoder returned " << decoded_frames << ", but only " << buffer_frames << " were expected! Buffer overflow!?"; } } else { qCCritical(decoder) << "Failed to decode audio: " << error_to_string(decoded_frames); decodedBuffer.fill('\0'); } } void AthenaOpusDecoder::lostFrame(QByteArray &decodedBuffer){ assert(_decoder); PerformanceTimer perfTimer("AthenaOpusDecoder::lostFrame"); int buffer_size = AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL * static_cast<int>(sizeof(int16_t)) * _opus_num_channels; decodedBuffer.resize( buffer_size ); int buffer_frames = decodedBuffer.size() / _opus_num_channels / static_cast<int>(sizeof( opus_int16 )); int decoded_frames = opus_decode( _decoder, nullptr, 0, reinterpret_cast<opus_int16*>(decodedBuffer.data()), buffer_frames, 1 ); if ( decoded_frames >= 0 ) { qCDebug(decoder) << "Produced " << decoded_frames << " opus frames from a lost frame, " << buffer_frames << " expected"; if ( decoded_frames < buffer_frames ) { qCWarning(decoder) << "Opus decoder returned " << decoded_frames << ", but " << buffer_frames << " were expected!"; int start = decoded_frames * static_cast<int>(sizeof(int16_t)) * _opus_num_channels; memset( &decodedBuffer.data()[start], 0, static_cast<size_t>(decodedBuffer.length() - start)); } else if ( decoded_frames > buffer_frames ) { // This should never happen qCCritical(decoder) << "Opus decoder returned " << decoded_frames << ", but only " << buffer_frames << " were expected! Buffer overflow!?"; } } else { qCCritical(decoder) << "Failed to decode lost frame: " << error_to_string(decoded_frames); decodedBuffer.fill('\0'); }}
#include <PerfStat.h>
#include <QtCore/QLoggingCategory>
#include <AudioConstants.h>
#include "OpusDecoder.h"
static QLoggingCategory decoder("AthenaOpusDecoder");
static QString error_to_string(int error) {
switch (error) {
case OPUS_OK:
return "OK";
case OPUS_BAD_ARG:
return "One or more invalid/out of range arguments.";
case OPUS_BUFFER_TOO_SMALL:
return "The mode struct passed is invalid.";
case OPUS_INTERNAL_ERROR:
return "An internal error was detected.";
case OPUS_INVALID_PACKET:
return "The compressed data passed is corrupted.";
case OPUS_UNIMPLEMENTED:
return "Invalid/unsupported request number.";
case OPUS_INVALID_STATE:
return "An encoder or decoder structure is invalid or already freed.";
default:
return QString("Unknown error code: %i").arg(error);
}
}
AthenaOpusDecoder::AthenaOpusDecoder(int sampleRate, int numChannels)
{
int error;
_opus_sample_rate = sampleRate;
_opus_num_channels = numChannels;
_decoder = opus_decoder_create(sampleRate, numChannels, &error);
if ( error != OPUS_OK ) {
qCCritical(decoder) << "Failed to initialize Opus encoder: " << error_to_string(error);
_decoder = nullptr;
return;
}
qCDebug(decoder) << "Opus decoder initialized, sampleRate = " << sampleRate << "; numChannels = " << numChannels;
}
AthenaOpusDecoder::~AthenaOpusDecoder()
{
if ( _decoder )
opus_decoder_destroy(_decoder);
}
void AthenaOpusDecoder::decode(const QByteArray &encodedBuffer, QByteArray &decodedBuffer)
{
assert(_decoder);
PerformanceTimer perfTimer("AthenaOpusDecoder::decode");
// The audio system encodes and decodes always in fixed size chunks
int buffer_size = AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL * static_cast<int>(sizeof(int16_t)) * _opus_num_channels;
decodedBuffer.resize( buffer_size );
int buffer_frames = decodedBuffer.size() / _opus_num_channels / static_cast<int>(sizeof( opus_int16 ));
qCDebug(decoder) << "Opus decode: encodedBytes = " << encodedBuffer.length() << "; decodedBufferBytes = " << decodedBuffer.size() << "; frameCount = " << buffer_frames;
int decoded_frames = opus_decode( _decoder, reinterpret_cast<const unsigned char*>(encodedBuffer.data()), encodedBuffer.length(), reinterpret_cast<opus_int16*>(decodedBuffer.data()), buffer_frames, 0 );
if ( decoded_frames >= 0 ) {
qCDebug(decoder) << "Decoded " << decoded_frames << " Opus frames, " << buffer_frames << " expected";
if ( decoded_frames < buffer_frames ) {
qCWarning(decoder) << "Opus decoder returned " << decoded_frames << ", but " << buffer_frames << " were expected!";
int start = decoded_frames * static_cast<int>(sizeof(int16_t)) * _opus_num_channels;
memset( &decodedBuffer.data()[start], 0, static_cast<size_t>(decodedBuffer.length() - start));
} else if ( decoded_frames > buffer_frames ) {
// This should never happen
qCCritical(decoder) << "Opus decoder returned " << decoded_frames << ", but only " << buffer_frames << " were expected! Buffer overflow!?";
}
} else {
qCCritical(decoder) << "Failed to decode audio: " << error_to_string(decoded_frames);
decodedBuffer.fill('\0');
}
}
void AthenaOpusDecoder::lostFrame(QByteArray &decodedBuffer)
{
assert(_decoder);
PerformanceTimer perfTimer("AthenaOpusDecoder::lostFrame");
int buffer_size = AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL * static_cast<int>(sizeof(int16_t)) * _opus_num_channels;
decodedBuffer.resize( buffer_size );
int buffer_frames = decodedBuffer.size() / _opus_num_channels / static_cast<int>(sizeof( opus_int16 ));
int decoded_frames = opus_decode( _decoder, nullptr, 0, reinterpret_cast<opus_int16*>(decodedBuffer.data()), buffer_frames, 1 );
if ( decoded_frames >= 0 ) {
qCDebug(decoder) << "Produced " << decoded_frames << " opus frames from a lost frame, " << buffer_frames << " expected";
if ( decoded_frames < buffer_frames ) {
qCWarning(decoder) << "Opus decoder returned " << decoded_frames << ", but " << buffer_frames << " were expected!";
int start = decoded_frames * static_cast<int>(sizeof(int16_t)) * _opus_num_channels;
memset( &decodedBuffer.data()[start], 0, static_cast<size_t>(decodedBuffer.length() - start));
} else if ( decoded_frames > buffer_frames ) {
// This should never happen
qCCritical(decoder) << "Opus decoder returned " << decoded_frames << ", but only " << buffer_frames << " were expected! Buffer overflow!?";
}
} else {
qCCritical(decoder) << "Failed to decode lost frame: " << error_to_string(decoded_frames);
decodedBuffer.fill('\0');
}
}