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1 | office | 1 | /** |
2 | * @file PacketProtoFlow.c |
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3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
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4 | * |
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5 | * @section LICENSE |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * 3. Neither the name of the author nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |||
30 | #include <protocol/packetproto.h> |
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31 | #include <misc/debug.h> |
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32 | |||
33 | #include <flow/PacketProtoFlow.h> |
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34 | |||
35 | int PacketProtoFlow_Init (PacketProtoFlow *o, int input_mtu, int num_packets, PacketPassInterface *output, BPendingGroup *pg) |
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36 | { |
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37 | ASSERT(input_mtu >= 0) |
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38 | ASSERT(input_mtu <= PACKETPROTO_MAXPAYLOAD) |
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39 | ASSERT(num_packets > 0) |
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40 | ASSERT(PacketPassInterface_GetMTU(output) >= PACKETPROTO_ENCLEN(input_mtu)) |
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41 | |||
42 | // init async input |
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43 | BufferWriter_Init(&o->ainput, input_mtu, pg); |
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44 | |||
45 | // init encoder |
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46 | PacketProtoEncoder_Init(&o->encoder, BufferWriter_GetOutput(&o->ainput), pg); |
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47 | |||
48 | // init buffer |
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49 | if (!PacketBuffer_Init(&o->buffer, PacketProtoEncoder_GetOutput(&o->encoder), output, num_packets, pg)) { |
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50 | goto fail0; |
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51 | } |
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52 | |||
53 | DebugObject_Init(&o->d_obj); |
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54 | |||
55 | return 1; |
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56 | |||
57 | fail0: |
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58 | PacketProtoEncoder_Free(&o->encoder); |
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59 | BufferWriter_Free(&o->ainput); |
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60 | return 0; |
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61 | } |
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62 | |||
63 | void PacketProtoFlow_Free (PacketProtoFlow *o) |
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64 | { |
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65 | DebugObject_Free(&o->d_obj); |
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66 | |||
67 | // free buffer |
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68 | PacketBuffer_Free(&o->buffer); |
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69 | |||
70 | // free encoder |
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71 | PacketProtoEncoder_Free(&o->encoder); |
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72 | |||
73 | // free async input |
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74 | BufferWriter_Free(&o->ainput); |
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75 | } |
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76 | |||
77 | BufferWriter * PacketProtoFlow_GetInput (PacketProtoFlow *o) |
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78 | { |
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79 | DebugObject_Access(&o->d_obj); |
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80 | |||
81 | return &o->ainput; |
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82 | } |