int PacketBuffer_Init (PacketBuffer *buf, PacketRecvInterface *input, PacketPassInterface *output, int num_packets, BPendingGroup *pg)
{
ASSERT(PacketPassInterface_GetMTU(output) >= PacketRecvInterface_GetMTU(input))
ASSERT(num_packets > 0)
// init arguments
buf->input = input;
buf->output = output;
// init input
PacketRecvInterface_Receiver_Init(buf->input, (PacketRecvInterface_handler_done)input_handler_done, buf);
// set input MTU
buf->input_mtu = PacketRecvInterface_GetMTU(buf->input);
// init output
PacketPassInterface_Sender_Init(buf->output, (PacketPassInterface_handler_done)output_handler_done, buf);
// allocate buffer
int num_blocks = ChunkBuffer2_calc_blocks(buf->input_mtu, num_packets);
if (num_blocks < 0) {
goto fail0;
}
if (!(buf->buf_data = BAllocArray(num_blocks, sizeof(buf->buf_data[0])))) {
goto fail0;
}
// init buffer
ChunkBuffer2_Init(&buf->buf, buf->buf_data, num_blocks, buf->input_mtu);
// schedule receive
PacketRecvInterface_Receiver_Recv(buf->input, buf->buf.input_dest);
DebugObject_Init(&buf->d_obj);
return 1;
fail0:
return 0;
}
int PacketProtoDecoder_Init (PacketProtoDecoder *enc, StreamRecvInterface *input, PacketPassInterface *output, BPendingGroup *pg, void *user, PacketProtoDecoder_handler_error handler_error)
{
// init arguments
enc->input = input;
enc->output = output;
enc->user = user;
enc->handler_error = handler_error;
// init input
StreamRecvInterface_Receiver_Init(enc->input, (StreamRecvInterface_handler_done)input_handler_done, enc);
// init output
PacketPassInterface_Sender_Init(enc->output, (PacketPassInterface_handler_done)output_handler_done, enc);
// set output MTU, limit by maximum payload size
enc->output_mtu = bmin_int(PacketPassInterface_GetMTU(enc->output), PACKETPROTO_MAXPAYLOAD);
// init buffer state
enc->buf_size = PACKETPROTO_ENCLEN(enc->output_mtu);
enc->buf_start = 0;
enc->buf_used = 0;
// allocate buffer
if (!(enc->buf = (uint8_t *)malloc(enc->buf_size))) {
goto fail0;
}
// start receiving
StreamRecvInterface_Receiver_Recv(enc->input, enc->buf, enc->buf_size);
DebugObject_Init(&enc->d_obj);
return 1;
fail0:
return 0;
}
