MythTV  master
mythgoom.cpp
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1 #include "mythgoom.h"
2 
3 // C++
4 #include <cmath>
5 #include <cstdlib>
6 #include <iostream>
7 
8 // Qt
9 #include <QCoreApplication>
10 #include <QPainter>
11 
12 // MythTV
13 #include <libmyth/mythcontext.h>
14 #include <libmythbase/compat.h>
16 
17 // Goom
20 
22 {
23  m_fps = 20;
24 
25  goom_init(800, 600, 0);
26 
27  m_scalew = gCoreContext->GetNumSetting("VisualScaleWidth", 2);
28  m_scaleh = gCoreContext->GetNumSetting("VisualScaleHeight", 2);
29 
30  // we allow 1, 2 or 4 for the scale since goom likes its resolution to be a multiple of 2
31  if (m_scaleh == 3 || m_scaleh > 4)
32  m_scaleh = 4;
33  if (m_scaleh < 1)
34  m_scaleh = 1;
35 
36  if (m_scalew == 3 || m_scalew > 4)
37  m_scalew = 4;
38  if (m_scalew < 1)
39  m_scalew = 1;
40 }
41 
43 {
44  goom_close();
45 }
46 
47 void Goom::resize(const QSize &newsize)
48 {
49  m_size = newsize;
50 
51  m_size.setHeight((m_size.height() / 2) * 2);
52  m_size.setWidth((m_size.width() / 2) * 2);
53 
54  // only scale the resolution if it is > 256
55  // this ensures the small visualisers don't look too blocky
56  if (m_size.width() > 256)
57  goom_set_resolution(m_size.width() / m_scalew, m_size.height() / m_scaleh, 0);
58  else
59  goom_set_resolution(m_size.width(), m_size.height(), 0);
60 }
61 
63 {
64  if (!node || node->m_length == 0)
65  return false;
66 
67  int numSamps = 512;
68  if (node->m_length < 512)
69  numSamps = node->m_length;
70 
71  GoomDualData data;
72 
73  int i = 0;
74  for (i = 0; i < numSamps; i++)
75  {
76  data[0][i] = node->m_left[i];
77  if (node->m_right)
78  data[1][i] = node->m_right[i];
79  else
80  data[1][i] = data[0][i];
81  }
82 
83  m_buffer = goom_update(data, 0);
84 
85  return false;
86 }
87 
88 bool Goom::draw(QPainter *p, const QColor &back)
89 {
90  p->fillRect(0, 0, m_size.width(), m_size.height(), back);
91 
92  if (!m_buffer)
93  return true;
94 
95  int width = m_size.width();
96  int height = m_size.height();
97 
98  if (m_size.width() > 256)
99  {
100  width /= m_scalew;
101  height /= m_scaleh;
102  }
103 
104  auto *image = new QImage((uchar*) m_buffer, width, height, width * 4, QImage::Format_RGB32);
105 
106  p->drawImage(QRect(0, 0, m_size.width(), m_size.height()), *image);
107 
108  delete image;
109 
110  return true;
111 }
112 
113 static class GoomFactory : public VisFactory
114 {
115  public:
116  const QString &name(void) const override // VisFactory
117  {
118  static QString s_name = QCoreApplication::translate("Visualizers",
119  "Goom");
120  return s_name;
121  }
122 
123  uint plugins(QStringList *list) const override // VisFactory
124  {
125  *list << name();
126  return 1;
127  }
128 
129  VisualBase *create(MainVisual *parent, const QString &pluginName) const override // VisFactory
130  {
131  (void)parent;
132  (void)pluginName;
133  return new Goom();
134  }
135 }GoomFactory;
GoomDualData
std::array< GoomSingleData, 2 > GoomDualData
Definition: goom_core.h:13
back
static guint32 * back
Definition: goom_core.cpp:25
VisualNode
Definition: videovisual.h:25
Goom::m_buffer
unsigned int * m_buffer
Definition: mythgoom.h:21
Goom::resize
void resize(const QSize &size) override
Definition: mythgoom.cpp:47
Goom
Definition: mythgoom.h:6
Goom::Goom
Goom(void)
Definition: mythgoom.cpp:21
VisualBase
Definition: visualize.h:62
VisualNode::m_left
short * m_left
Definition: videovisual.h:37
goom_set_resolution
void goom_set_resolution(guint32 resx, guint32 resy, int cinemascope)
Definition: goom_core.cpp:104
mythlogging.h
hardwareprofile.config.p
p
Definition: config.py:33
VisualNode::m_right
short * m_right
Definition: videovisual.h:38
compat.h
GoomFactory
Definition: mythgoom.cpp:113
goom_core.h
VisFactory
Definition: visualize.h:91
goom_init
void goom_init(guint32 resx, guint32 resy, int cinemascope)
Definition: goom_core.cpp:64
Goom::m_scaleh
int m_scaleh
Definition: mythgoom.h:23
uint
unsigned int uint
Definition: compat.h:79
gCoreContext
MythCoreContext * gCoreContext
This global variable contains the MythCoreContext instance for the app.
Definition: mythcorecontext.cpp:55
MythCoreContext::GetNumSetting
int GetNumSetting(const QString &key, int defaultval=0)
Definition: mythcorecontext.cpp:912
mythgoom.h
goom_update
guint32 * goom_update(GoomDualData &data, int forceMode)
Definition: goom_core.cpp:133
goom_close
void goom_close()
Definition: goom_core.cpp:845
MainVisual
Definition: mainvisual.h:34
Goom::m_scalew
int m_scalew
Definition: mythgoom.h:22
VisualNode::m_length
long m_length
Definition: videovisual.h:39
VisualBase::m_fps
int m_fps
Definition: visualize.h:87
Goom::process
bool process(VisualNode *node) override
Definition: mythgoom.cpp:62
Goom::draw
bool draw(QPainter *p, const QColor &back) override
Definition: mythgoom.cpp:88
GoomFactory
GoomFactory GoomFactory
GoomFactory::plugins
uint plugins(QStringList *list) const override
Definition: mythgoom.cpp:123
GoomFactory::name
const QString & name(void) const override
Definition: mythgoom.cpp:116
goom_tools.h
Goom::~Goom
~Goom() override
Definition: mythgoom.cpp:42
GoomFactory::create
VisualBase * create(MainVisual *parent, const QString &pluginName) const override
Definition: mythgoom.cpp:129
mythcontext.h
Goom::m_size
QSize m_size
Definition: mythgoom.h:19