src/add-ons/media/media-add-ons/dvb/Packet.cpp

   1 /*
   2  * Copyright (c) 2004-2007 Marcus Overhagen <marcus@overhagen.de>
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without restriction,
   7  * including without limitation the rights to use, copy, modify,
   8  * merge, publish, distribute, sublicense, and/or sell copies of
   9  * the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  17  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26 #include <fcntl.h>
  27 #include <unistd.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include "Packet.h"
  32
  33 #define PACKET
  34 #ifdef PACKET
  35   #define TRACE printf
  36 #else
  37   #define TRACE(a...)
  38 #endif
  39
  40
  41 Packet::Packet(size_t init_size)
  42  :      fBuffer(malloc(init_size))
  43  ,      fBufferSize(0)
  44  ,      fBufferSizeMax(init_size)
  45  ,      fTimeStamp(0)
  46 {
  47 }
  48
  49
  50 Packet::Packet(const Packet &clone)
  51 {
  52         fBufferSize = clone.Size();
  53         fBufferSizeMax = fBufferSize;
  54         fBuffer = malloc(fBufferSize);
  55         fTimeStamp = clone.TimeStamp();
  56         memcpy(fBuffer, clone.Data(), fBufferSize);
  57 }
  58
  59
  60 Packet::Packet(const void *data, size_t size, bigtime_t time_stamp)
  61  :      fBuffer(malloc(size))
  62  ,      fBufferSize(size)
  63  ,      fBufferSizeMax(size)
  64  ,      fTimeStamp(time_stamp)
  65 {
  66         memcpy(fBuffer, data, size);
  67 }
  68
  69
  70 Packet::~Packet()
  71 {
  72         free(fBuffer);
  73 }
  74
  75
  76 void
  77 Packet::AddData(const void *data, size_t size)
  78 {
  79         if (fBufferSize + size > fBufferSizeMax) {
  80                 fBufferSizeMax = (fBufferSize + size + 8191) & ~8191;
  81                 fBuffer = realloc(fBuffer, fBufferSizeMax);
  82         }
  83
  84         memcpy((char *)fBuffer + fBufferSize, data, size);
  85         fBufferSize += size;
  86 }