static void DecoderThreadProc(void* context) {
int err;
PQUEUED_AUDIO_PACKET packet;
while (!PltIsThreadInterrupted(&decoderThread)) {
err = LbqWaitForQueueElement(&packetQueue, (void**)&packet);
if (err != LBQ_SUCCESS) {
// An exit signal was received
return;
}
decodeInputData(packet);
free(packet);
}
}
static void DecoderThreadProc(void* context) {
PRTP_PACKET rtp;
int length;
int err;
char *data;
unsigned short lastSeq = 0;
while (!PltIsThreadInterrupted(&decoderThread)) {
err = LbqWaitForQueueElement(&packetQueue, (void**) &data);
if (err != LBQ_SUCCESS) {
Limelog("Decoder thread terminating\n");
return;
}
memcpy(&length, data, sizeof(int));
rtp = (PRTP_PACKET) &data[sizeof(int)];
if (length < sizeof(RTP_PACKET)) {
// Runt packet
goto freeandcontinue;
}
if (rtp->packetType != 97) {
// Not audio
goto freeandcontinue;
}
rtp->sequenceNumber = htons(rtp->sequenceNumber);
if (lastSeq != 0 && (unsigned short) (lastSeq + 1) != rtp->sequenceNumber) {
Limelog("Received OOS audio data (expected %d, but got %d)\n", lastSeq + 1, rtp->sequenceNumber);
callbacks.decodeAndPlaySample(NULL, 0);
}
lastSeq = rtp->sequenceNumber;
callbacks.decodeAndPlaySample((char *) (rtp + 1), length - sizeof(*rtp));
freeandcontinue:
free(data);
}
}
/* Input thread proc */
static void inputSendThreadProc(void* context) {
SOCK_RET err;
PPACKET_HOLDER holder;
char encryptedBuffer[MAX_INPUT_PACKET_SIZE];
size_t encryptedSize;
while (!PltIsThreadInterrupted(&inputSendThread)) {
int encryptedLengthPrefix;
err = LbqWaitForQueueElement(&packetQueue, (void**) &holder);
if (err != LBQ_SUCCESS) {
return;
}
// If it's a multi-controller packet we can do batching
if (holder->packet.multiController.header.packetType == htonl(PACKET_TYPE_MULTI_CONTROLLER)) {
PPACKET_HOLDER controllerBatchHolder;
PNV_MULTI_CONTROLLER_PACKET origPkt;
int dirs[6];
memset(dirs, 0, sizeof(dirs));
origPkt = &holder->packet.multiController;
for (;;) {
PNV_MULTI_CONTROLLER_PACKET newPkt;
// Peek at the next packet
if (LbqPeekQueueElement(&packetQueue, (void**)&controllerBatchHolder) != LBQ_SUCCESS) {
break;
}
// If it's not a controller packet, we're done
if (controllerBatchHolder->packet.multiController.header.packetType != htonl(PACKET_TYPE_MULTI_CONTROLLER)) {
break;
}
// Check if it's able to be batched
newPkt = &controllerBatchHolder->packet.multiController;
if (newPkt->buttonFlags != origPkt->buttonFlags ||
newPkt->controllerNumber != origPkt->controllerNumber ||
!checkDirs(origPkt->leftTrigger, newPkt->leftTrigger, &dirs[0]) ||
!checkDirs(origPkt->rightTrigger, newPkt->rightTrigger, &dirs[1]) ||
!checkDirs(origPkt->leftStickX, newPkt->leftStickX, &dirs[2]) ||
!checkDirs(origPkt->leftStickY, newPkt->leftStickY, &dirs[3]) ||
!checkDirs(origPkt->rightStickX, newPkt->rightStickX, &dirs[4]) ||
!checkDirs(origPkt->rightStickY, newPkt->rightStickY, &dirs[5])) {
// Batching not allowed
break;
}
// Remove the batchable controller packet
if (LbqPollQueueElement(&packetQueue, (void**)&controllerBatchHolder) != LBQ_SUCCESS) {
break;
}
// Update the original packet
origPkt->leftTrigger = newPkt->leftTrigger;
origPkt->rightTrigger = newPkt->rightTrigger;
origPkt->leftStickX = newPkt->leftStickX;
origPkt->leftStickY = newPkt->leftStickY;
origPkt->rightStickX = newPkt->rightStickX;
origPkt->rightStickY = newPkt->rightStickY;
// Free the batched packet holder
free(controllerBatchHolder);
}
}
// If it's a mouse move packet, we can also do batching
else if (holder->packet.mouseMove.header.packetType == htonl(PACKET_TYPE_MOUSE_MOVE)) {
PPACKET_HOLDER mouseBatchHolder;
int totalDeltaX = (short)htons(holder->packet.mouseMove.deltaX);
int totalDeltaY = (short)htons(holder->packet.mouseMove.deltaY);
for (;;) {
int partialDeltaX;
int partialDeltaY;
// Peek at the next packet
if (LbqPeekQueueElement(&packetQueue, (void**)&mouseBatchHolder) != LBQ_SUCCESS) {
break;
}
// If it's not a mouse move packet, we're done
if (mouseBatchHolder->packet.mouseMove.header.packetType != htonl(PACKET_TYPE_MOUSE_MOVE)) {
break;
}
partialDeltaX = (short)htons(mouseBatchHolder->packet.mouseMove.deltaX);
partialDeltaY = (short)htons(mouseBatchHolder->packet.mouseMove.deltaY);
// Check for overflow
if (partialDeltaX + totalDeltaX > INT16_MAX ||
partialDeltaX + totalDeltaX < INT16_MIN ||
partialDeltaY + totalDeltaY > INT16_MAX ||
partialDeltaY + totalDeltaY < INT16_MIN) {
// Total delta would overflow our 16-bit short
break;
}
// Remove the batchable mouse move packet
if (LbqPollQueueElement(&packetQueue, (void**)&mouseBatchHolder) != LBQ_SUCCESS) {
break;
}
totalDeltaX += partialDeltaX;
totalDeltaY += partialDeltaY;
// Free the batched packet holder
free(mouseBatchHolder);
}
// Update the original packet
holder->packet.mouseMove.deltaX = htons((short)totalDeltaX);
holder->packet.mouseMove.deltaY = htons((short)totalDeltaY);
}
encryptedSize = sizeof(encryptedBuffer);
err = oaes_encrypt(oaesContext, (const unsigned char*) &holder->packet, holder->packetLength,
(unsigned char*) encryptedBuffer, &encryptedSize);
free(holder);
if (err != OAES_RET_SUCCESS) {
Limelog("Input: Encryption failed: %d\n", (int)err);
ListenerCallbacks.connectionTerminated(err);
return;
}
// The first 32-bytes of the output are internal OAES stuff that we want to ignore
encryptedSize -= OAES_DATA_OFFSET;
// Overwrite the last 4 bytes before the encrypted data with the length so
// we can send the message all at once. GFE can choke if it gets the header
// before the rest of the message.
encryptedLengthPrefix = htonl((unsigned long) encryptedSize);
memcpy(&encryptedBuffer[OAES_DATA_OFFSET - sizeof(encryptedLengthPrefix)],
&encryptedLengthPrefix, sizeof(encryptedLengthPrefix));
// Send the encrypted payload
err = send(inputSock, (const char*) &encryptedBuffer[OAES_DATA_OFFSET - sizeof(encryptedLengthPrefix)],
(int)(encryptedSize + sizeof(encryptedLengthPrefix)), 0);
if (err <= 0) {
Limelog("Input: send() failed: %d\n", (int)LastSocketError());
ListenerCallbacks.connectionTerminated(LastSocketError());
return;
}
}
}
