1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* GStreamer mplex (mjpegtools) wrapper
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstmplexibitstream.hh: gstreamer/mplex input bitstream wrapper
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstmplexibitstream.hh"
/*
* Class init/exit functions.
*/
GstMplexIBitStream::GstMplexIBitStream (GstPad *_pad,
guint buf_size) :
IBitStream ()
{
guint8 *data;
pad = _pad;
bs = gst_bytestream_new (pad);
eos = FALSE;
streamname = g_strdup (gst_pad_get_name (_pad));
SetBufSize (buf_size);
eobs = false;
byteidx = 0;
/* we peek 1 byte (not even caring about the return value) so we
* are sure that we have data and thus capsnego must be completed
* when we return. */
gst_bytestream_peek_bytes (bs, &data, 1);
if (!ReadIntoBuffer () && buffered == 0) {
GST_ELEMENT_ERROR (gst_pad_get_parent (_pad), RESOURCE, READ, (""),
("Failed to read from input pad %s",
gst_pad_get_name (pad)));
}
}
GstMplexIBitStream::~GstMplexIBitStream (void)
{
gst_bytestream_destroy (bs);
}
/*
* Read data.
*/
size_t
GstMplexIBitStream::ReadStreamBytes (uint8_t *buf,
size_t size)
{
guint8 *data;
guint read;
if (eos)
return 0;
if ((read = gst_bytestream_peek_bytes (bs, &data, size)) != size) {
GstEvent *event;
guint pending;
gst_bytestream_get_status (bs, &pending, &event);
if (event) {
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
eos = TRUE;
break;
default:
break;
}
gst_event_unref (event);
}
}
memcpy (buf, data, read);
gst_bytestream_flush_fast (bs, read);
return read;
}
/*
* Are we at EOS?
*/
bool
GstMplexIBitStream::EndOfStream (void)
{
return eos;
}
|
