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- improving the decoder

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This commit is contained in:
Dmytro Bogovych
2026-02-19 15:27:32 +03:00
parent 8f8bfda9df
commit 94f30b25e9
9 changed files with 119 additions and 64 deletions
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src/engine/media/MT_AudioReceiver.h
+20 -12
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@@ -144,19 +144,27 @@ public:
struct DecodeOptions
{
bool mResampleToMainRate = true;
bool mFillGapByCNG = false;
bool mSkipDecode = false;
bool mResampleToMainRate = true; // Resample all decoded audio to AUDIO_SAMPLERATE
bool mFillGapByCNG = false; // Use CNG information if available
bool mSkipDecode = false; // Don't do decode, just dry run - fetch packets, remove them from the jitter buffer
std::chrono::milliseconds mElapsed = 0ms; // How much milliseconds should be decoded; zero value means "decode just next packet from the buffer"
};
enum DecodeResult
struct DecodeResult
{
DecodeResult_Ok, // Decoded ok
DecodeResult_Skip, // Just no data - emit silence instead
DecodeResult_BadPacket // Error happened during the decode
enum class Status
{
Ok, // Decoded ok
Skip, // Just no data - emit silence instead
BadPacket // Error happened during the decode
};
Status mStatus = Status::Ok;
int mSamplerate = 0;
int mChannels = 0;
};
DecodeResult getAudio(Audio::DataWindow& output, DecodeOptions options = {.mResampleToMainRate = true, .mFillGapByCNG = false, .mSkipDecode = false}, int* rate = nullptr);
DecodeResult getAudioTo(Audio::DataWindow& output, DecodeOptions options);
// Looks for codec by payload type
Codec* findCodec(int payloadType);
@@ -204,7 +212,7 @@ protected:
Audio::PWavFileWriter mDecodedDump;
std::optional<std::chrono::steady_clock::time_point> mLastDecodeTimestamp; // Time last call happened to codec->decode()
std::optional<std::chrono::steady_clock::time_point> mDecodeTimestamp; // Time last call happened to codec->decode()
float mIntervalSum = 0.0f;
int mIntervalCount = 0;
@@ -220,9 +228,9 @@ protected:
// Calculate bitrate switch statistics for AMR codecs
void updateAmrCodecStats(Codec* c);
DecodeResult decodeGap(Audio::DataWindow& output, DecodeOptions options);
DecodeResult decodePacket(const RtpBuffer::ResultList& rl, Audio::DataWindow& output, DecodeOptions options, int* rate = nullptr);
DecodeResult decodeNone(Audio::DataWindow& output, DecodeOptions options);
DecodeResult decodeGapTo(Audio::DataWindow& output, DecodeOptions options);
DecodeResult decodePacketTo(Audio::DataWindow& output, DecodeOptions options, const RtpBuffer::ResultList& rl);
DecodeResult decodeEmptyTo(Audio::DataWindow& output, DecodeOptions options);
};
class DtmfReceiver: public Receiver