Instrument Neutral Distributed Interface INDI  2.0.2
rawencoder.cpp
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1 /*
2  Copyright (C) 2017 by Jasem Mutlaq <mutlaqja@ikarustech.com>
3 
4  INDI Raw Encoder
5 
6  This library is free software; you can redistribute it and/or
7  modify it under the terms of the GNU Lesser General Public
8  License as published by the Free Software Foundation; either
9  version 2.1 of the License, or (at your option) any later version.
10 
11  This library is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  Lesser General Public License for more details.
15 
16  You should have received a copy of the GNU Lesser General Public
17  License along with this library; if not, write to the Free Software
18  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 
20 */
21 
22 #include "rawencoder.h"
23 #include "stream/streammanager.h"
24 #include "indiccd.h"
25 
26 #include <zlib.h>
27 
28 namespace INDI
29 {
30 
32 {
33  name = "RAW";
34 }
35 
37 {
38 }
39 
40 const char *RawEncoder::getDeviceName()
41 {
42  return currentDevice->getDeviceName();
43 }
44 
45 bool RawEncoder::upload(INDI::WidgetViewBlob *bp, const uint8_t *buffer, uint32_t nbytes, bool isCompressed)
46 {
47  // Do we want to compress ?
48  if (isCompressed)
49  {
50  // Compress frame
51  compressedFrame.resize(nbytes + nbytes / 64 + 16 + 3);
52  uLongf compressedBytes = compressedFrame.size();
53 
54  int ret = compress2(compressedFrame.data(), &compressedBytes, buffer, nbytes, 4);
55  if (ret != Z_OK)
56  {
57  // this should NEVER happen
58  LOGF_ERROR("internal error - compression failed: %d", ret);
59  return false;
60  }
61 
62  // Send it compressed
63  bp->setBlob(compressedFrame.data());
64  bp->setBlobLen(compressedBytes);
65  bp->setSize(nbytes);
66  bp->setFormat(".stream.z");
67  }
68  else
69  {
70  // Send it uncompressed
71  bp->setBlob((const_cast<uint8_t *>(buffer)));
72  bp->setBlobLen(nbytes);
73  bp->setSize(nbytes);
74  bp->setFormat(".stream");
75  }
76 
77  return true;
78 }
79 }
const char * getDeviceName() const
Definition: basedevice.cpp:821
INDI::DefaultDevice * currentDevice
virtual bool upload(INDI::WidgetViewBlob *bp, const uint8_t *buffer, uint32_t nbytes, bool isCompressed=false) override
Definition: rawencoder.cpp:45
#define LOGF_ERROR(fmt,...)
Definition: indilogger.h:80
std::vector< uint8_t > buffer
Namespace to encapsulate INDI client, drivers, and mediator classes.
void setFormat(const char *format)