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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/* GStreamer mpeg2enc (mjpegtools) wrapper
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Mark Nauwelaerts <manauw@skynet.be>
*
* gstmpeg2encoder.cc: gstreamer/mpeg2enc encoder class
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <mpegconsts.h>
#include <quantize.hh>
#if GST_MJPEGTOOLS_API >= 20000
#include <ontheflyratectlpass1.hh>
#include <ontheflyratectlpass2.hh>
#elif GST_MJPEGTOOLS_API >= 10900
#include <ontheflyratectl.hh>
#include <pass1ratectl.hh>
#include <pass2ratectl.hh>
#else
#include <ratectl.hh>
#endif
#include <seqencoder.hh>
#include <mpeg2coder.hh>
#include "gstmpeg2enc.hh"
#include "gstmpeg2encoder.hh"
/*
* Class init stuff.
*/
GstMpeg2Encoder::GstMpeg2Encoder (GstMpeg2EncOptions * options, GstElement * in_element, GstCaps * in_caps):
MPEG2Encoder (*options)
{
element = in_element;
gst_object_ref (element);
caps = in_caps;
gst_caps_ref (in_caps);
init_done = FALSE;
}
GstMpeg2Encoder::~GstMpeg2Encoder ()
{
gst_caps_unref (caps);
gst_object_unref (element);
}
gboolean GstMpeg2Encoder::setup ()
{
MPEG2EncInVidParams
strm;
GstMpeg2enc *
enc;
enc = GST_MPEG2ENC (element);
/* I/O */
reader = new GstMpeg2EncPictureReader (element, caps, &parms);
reader->StreamPictureParams (strm);
#if GST_MJPEGTOOLS_API == 10800
/* chain thread caters for reading, do not need another thread for this */
options.allow_parallel_read = FALSE;
#endif
if (options.SetFormatPresets (strm)) {
return FALSE;
}
writer = new GstMpeg2EncStreamWriter (enc->srcpad, &parms);
/* encoding internals */
quantizer = new Quantizer (parms);
#if GST_MJPEGTOOLS_API < 10900
bitrate_controller = new OnTheFlyRateCtl (parms);
#else
pass1ratectl = new OnTheFlyPass1 (parms);
pass2ratectl = new OnTheFlyPass2 (parms);
#endif
#if GST_MJPEGTOOLS_API >= 10900
/* sequencer */
seqencoder = new SeqEncoder (parms, *reader, *quantizer,
*writer, *pass1ratectl, *pass2ratectl);
#elif GST_MJPEGTOOLS_API >= 10800
/* sequencer */
seqencoder = new SeqEncoder (parms, *reader, *quantizer,
*writer, *bitrate_controller);
#else
coder = new MPEG2Coder (parms, *writer);
/* sequencer */
seqencoder = new SeqEncoder (parms, *reader, *quantizer,
*writer, *coder, *bitrate_controller);
#endif
return TRUE;
}
void
GstMpeg2Encoder::init ()
{
if (!init_done) {
parms.Init (options);
reader->Init ();
quantizer->Init ();
#if GST_MJPEGTOOLS_API >= 10800
seqencoder->Init ();
#endif
init_done = TRUE;
}
}
/*
* Process all input provided by the reader until it signals eos.
*/
void
GstMpeg2Encoder::encode ()
{
/* hm, this is all... eek! */
#if GST_MJPEGTOOLS_API >= 10800
seqencoder->EncodeStream ();
#else
seqencoder->Encode ();
#endif
}
/*
* Get current output format.
*/
GstCaps *
GstMpeg2Encoder::getFormat ()
{
y4m_ratio_t fps = mpeg_framerate (options.frame_rate);
return gst_caps_new_simple ("video/mpeg",
"systemstream", G_TYPE_BOOLEAN, FALSE,
"mpegversion", G_TYPE_INT, options.mpeg,
"width", G_TYPE_INT, options.in_img_width,
"height", G_TYPE_INT, options.in_img_height,
"framerate", GST_TYPE_FRACTION, fps.n, fps.d, NULL);
}
|
