Showing the changes to plugins/opusCodec/src/OpusDecoder.cpp (1 of 7 files). Show all
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| 1 | #include <PerfStat.h> | ||
| 2 | #include <QtCore/QLoggingCategory> | ||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | #include "OpusDecoder.h" | ||
| 7 | |||
| 8 | static QLoggingCategory decoder("AthenaOpusDecoder"); | ||
| 9 | |||
| 10 | static QString error_to_string(int error) { | ||
| 11 | switch (error) { | ||
| 12 | case OPUS_OK: | ||
| 13 | return "OK"; | ||
| 14 | case OPUS_BAD_ARG: | ||
| 15 | return "One or more invalid/out of range arguments."; | ||
| 16 | case OPUS_BUFFER_TOO_SMALL: | ||
| 17 | return "The mode struct passed is invalid."; | ||
| 18 | case OPUS_INTERNAL_ERROR: | ||
| 19 | return "An internal error was detected."; | ||
| 20 | case OPUS_INVALID_PACKET: | ||
| 21 | return "The compressed data passed is corrupted."; | ||
| 22 | case OPUS_UNIMPLEMENTED: | ||
| 23 | return "Invalid/unsupported request number."; | ||
| 24 | case OPUS_INVALID_STATE: | ||
| 25 | return "An encoder or decoder structure is invalid or already freed."; | ||
| 26 | default: | ||
| 27 | return QString("Unknown error code: %i").arg(error); | ||
| 28 | } | ||
| 29 | } | ||
| 30 | |||
| 31 | |||
| 32 | AthenaOpusDecoder::AthenaOpusDecoder(int sampleRate, int numChannels) | ||
| 33 | { | ||
| 34 | int error; | ||
| 35 | |||
| 36 | _opus_sample_rate = sampleRate; | ||
| 37 | _opus_num_channels = numChannels; | ||
| 38 | |||
| 39 | _decoder = opus_decoder_create(sampleRate, numChannels, &error); | ||
| 40 | |||
| 41 | if ( error != OPUS_OK ) { | ||
| 42 | qCCritical(decoder) << "Failed to initialize Opus encoder: " << error_to_string(error); | ||
| 43 | _decoder = nullptr; | ||
| 44 | return; | ||
| 45 | } | ||
| 46 | |||
| 47 | |||
| 48 | qCDebug(decoder) << "Opus decoder initialized"; | ||
| 49 | } | ||
| 50 | |||
| 51 | AthenaOpusDecoder::~AthenaOpusDecoder() | ||
| 52 | { | ||
| 53 | if ( _decoder ) | ||
| 54 | opus_decoder_destroy(_decoder); | ||
| 55 | |||
| 56 | } | ||
| 57 | |||
| 58 | void AthenaOpusDecoder::decode(const QByteArray &encodedBuffer, QByteArray &decodedBuffer) | ||
| 59 | { | ||
| 60 | assert(_decoder); | ||
| 61 | |||
| 62 | PerformanceTimer perfTimer("AthenaOpusDecoder::decode"); | ||
| 63 | |||
| 64 | decodedBuffer.resize( 65536 ); // Brute force, yeah! | ||
| 65 | int frame_size = decodedBuffer.size() / _opus_num_channels / static_cast<int>(sizeof( opus_int16 )); | ||
| 66 | |||
| 67 | int frames = opus_decode( _decoder, reinterpret_cast<const unsigned char*>(encodedBuffer.data()), encodedBuffer.length(), reinterpret_cast<opus_int16*>(decodedBuffer.data()), frame_size, 1 ); | ||
| 68 | |||
| 69 | if ( frames >= 0 ) { | ||
| 70 | qCDebug(decoder) << "Decoded " << frames << " Opus frames"; | ||
| 71 | decodedBuffer.resize( frames * static_cast<int>(sizeof( opus_int16 )) * _opus_num_channels ); | ||
| 72 | } else { | ||
| 73 | qCCritical(decoder) << "Failed to decode audio: " << error_to_string(frames); | ||
| 74 | } | ||
| 75 | |||
| 76 | } | ||
| 77 | |||
| 78 | void AthenaOpusDecoder::lostFrame(QByteArray &decodedBuffer) | ||
| 79 | { | ||
| 80 | assert(_decoder); | ||
| 81 | |||
| 82 | PerformanceTimer perfTimer("AthenaOpusDecoder::lostFrame"); | ||
| 83 | |||
| 84 | decodedBuffer.resize( 65536 ); // Brute force, yeah! | ||
| 85 | int frame_size = decodedBuffer.size() / _opus_num_channels / static_cast<int>(sizeof( opus_int16 )); | ||
| 86 | |||
| 87 | int frames = opus_decode( _decoder, nullptr, 0, reinterpret_cast<opus_int16*>(decodedBuffer.data()), frame_size, 1 ); | ||
| 88 | |||
| 89 | if ( frames >= 0 ) { | ||
| 90 | qCDebug(decoder) << "Produced " << frames << " opus frames from a lost frame"; | ||
| 91 | decodedBuffer.resize( frames * static_cast<int>(sizeof( opus_int16 )) * _opus_num_channels ); | ||
| 92 | } else { | ||
| 93 | qCCritical(decoder) << "Failed to decode lost frame: " << error_to_string(frames); | ||
| 94 | } | ||
| 95 | } | ||
| 96 | |||
| 97 | |||