moonlight-stream/moonlight-common-c
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Validate the Opus data in debug builds

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This commit is contained in:
Cameron Gutman 2021-06-02 20:10:46 -05:00
parent ab51acb712
commit e3d4f4e91f
1 changed files with 35 additions and 0 deletions
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35
src/AudioStream.c
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@ -17,6 +17,11 @@ static unsigned short lastSeq;
static bool receivedDataFromPeer;
static uint64_t firstReceiveTime;
#ifdef LC_DEBUG
#define INVALID_OPUS_HEADER 0x00
static uint8_t opusHeaderByte;
#endif
#define RTP_PORT 48000
#define MAX_PACKET_SIZE 1400
@ -71,6 +76,9 @@ int initializeAudioStream(void) {
receivedDataFromPeer = false;
firstReceiveTime = 0;
audioDecryptionCtx = PltCreateCryptoContext();
#ifdef LC_DEBUG
opusHeaderByte = INVALID_OPUS_HEADER;
#endif
// Copy and byte-swap the AV RI key ID used for the audio encryption IV
memcpy(&avRiKeyId, StreamConfig.remoteInputAesIv, sizeof(avRiKeyId));
@ -178,9 +186,36 @@ static void decodeInputData(PQUEUED_AUDIO_PACKET packet) {
return;
}
#ifdef LC_DEBUG
if (opusHeaderByte == INVALID_OPUS_HEADER) {
opusHeaderByte = decryptedOpusData[0];
LC_ASSERT(opusHeaderByte != INVALID_OPUS_HEADER);
}
else {
// Opus header should stay constant for the entire stream.
// If it doesn't, it may indicate that the RtpAudioQueue
// incorrectly recovered a data shard or the decryption
// of the audio packet failed.
LC_ASSERT(decryptedOpusData[0] == opusHeaderByte);
}
#endif
AudioCallbacks.decodeAndPlaySample((char*)decryptedOpusData, dataLength);
}
else {
#ifdef LC_DEBUG
if (opusHeaderByte == INVALID_OPUS_HEADER) {
opusHeaderByte = ((uint8_t*)(rtp + 1))[0];
LC_ASSERT(opusHeaderByte != INVALID_OPUS_HEADER);
}
else {
// Opus header should stay constant for the entire stream.
// If it doesn't, it may indicate that the RtpAudioQueue
// incorrectly recovered a data shard.
LC_ASSERT(((uint8_t*)(rtp + 1))[0] == opusHeaderByte);
}
#endif
AudioCallbacks.decodeAndPlaySample((char*)(rtp + 1), packet->header.size - sizeof(*rtp));
}
}