trunk/src/qsamplerChannelStrip.cpp

// qsamplerChannelStrip.cpp
//
/****************************************************************************
   Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved.
   Copyright (C) 2007, Christian Schoenebeck

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*****************************************************************************/

#include "qsamplerAbout.h"
#include "qsamplerChannelStrip.h"

#include "qsamplerMainForm.h"

#include <QDragEnterEvent>
#include <QUrl>

// Channel status/usage usage limit control.
#define QSAMPLER_ERROR_LIMIT    3

// Needed for lroundf()
#include <math.h>

namespace QSampler {

#ifndef CONFIG_ROUND
static inline long lroundf ( float x )
{
        if (x >= 0.0f)
                return long(x + 0.5f);
        else
                return long(x - 0.5f);
}
#endif

ChannelStrip::ChannelStrip ( QWidget* pParent, Qt::WindowFlags wflags )
        : QWidget(pParent, wflags)
{
        m_ui.setupUi(this);

        // Initialize locals.
        m_pChannel     = NULL;
        m_iDirtyChange = 0;
        m_iErrorCount  = 0;

        // Try to restore normal window positioning.
        adjustSize();

        QObject::connect(m_ui.ChannelSetupPushButton,
                SIGNAL(clicked()),
                SLOT(channelSetup()));
        QObject::connect(m_ui.ChannelMutePushButton,
                SIGNAL(toggled(bool)),
                SLOT(channelMute(bool)));
        QObject::connect(m_ui.ChannelSoloPushButton,
                SIGNAL(toggled(bool)),
                SLOT(channelSolo(bool)));
        QObject::connect(m_ui.VolumeSlider,
                SIGNAL(valueChanged(int)),
                SLOT(volumeChanged(int)));
        QObject::connect(m_ui.VolumeSpinBox,
                SIGNAL(valueChanged(int)),
                SLOT(volumeChanged(int)));
        QObject::connect(m_ui.ChannelEditPushButton,
                SIGNAL(clicked()),
                SLOT(channelEdit()));
}


ChannelStrip::~ChannelStrip (void)
{
        // Destroy existing channel descriptor.
        if (m_pChannel)
                delete m_pChannel;
        m_pChannel = NULL;
}


// Window drag-n-drop event handlers.
void ChannelStrip::dragEnterEvent ( QDragEnterEvent* pDragEnterEvent )
{
        if (m_pChannel == NULL)
                return;

        bool bAccept = false;

        if (pDragEnterEvent->source() == NULL) {
                const QMimeData *pMimeData = pDragEnterEvent->mimeData();
                if (pMimeData && pMimeData->hasUrls()) {
                        QListIterator<QUrl> iter(pMimeData->urls());
                        while (iter.hasNext()) {
                                const QString& sFilename = iter.next().toLocalFile();
                                if (!sFilename.isEmpty()) {
                                        bAccept = qsamplerChannel::isInstrumentFile(sFilename);
                                        break;
                                }
                        }
                }
        }

        if (bAccept)
                pDragEnterEvent->accept();
        else
                pDragEnterEvent->ignore();
}


void ChannelStrip::dropEvent ( QDropEvent* pDropEvent )
{
        if (m_pChannel == NULL)
                return;

        if (pDropEvent->source())
                return;

        const QMimeData *pMimeData = pDropEvent->mimeData();
        if (pMimeData && pMimeData->hasUrls()) {
                QStringList files;
                QListIterator<QUrl> iter(pMimeData->urls());
                while (iter.hasNext()) {
                        const QString& sFilename = iter.next().toLocalFile();
                        if (!sFilename.isEmpty()) {
                                // Go and set the dropped instrument filename...
                                m_pChannel->setInstrument(sFilename, 0);
                                // Open up the channel dialog.
                                channelSetup();
                                break;
                        }
                }
        }
}


// Channel strip setup formal initializer.
void ChannelStrip::setup ( qsamplerChannel *pChannel )
{
        // Destroy any previous channel descriptor;
        // (remember that once setup we own it!)
        if (m_pChannel)
                delete m_pChannel;

        // Set the new one...
        m_pChannel = pChannel;

        // Stabilize this around.
        updateChannelInfo();

        // We'll accept drops from now on...
        if (m_pChannel)
                setAcceptDrops(true);
}


// Channel secriptor accessor.
qsamplerChannel *ChannelStrip::channel (void) const
{
        return m_pChannel;
}


// Messages view font accessors.
QFont ChannelStrip::displayFont (void) const
{
        return m_ui.EngineNameTextLabel->font();
}

void ChannelStrip::setDisplayFont ( const QFont & font )
{
        m_ui.EngineNameTextLabel->setFont(font);
        m_ui.MidiPortChannelTextLabel->setFont(font);
        m_ui.InstrumentNameTextLabel->setFont(font);
        m_ui.InstrumentStatusTextLabel->setFont(font);
}


// Channel display background effect.
void ChannelStrip::setDisplayEffect ( bool bDisplayEffect )
{
        QPalette pal;
        pal.setColor(QPalette::Foreground, Qt::yellow);
        m_ui.EngineNameTextLabel->setPalette(pal);
        m_ui.MidiPortChannelTextLabel->setPalette(pal);
        pal.setColor(QPalette::Foreground, Qt::green);
        if (bDisplayEffect) {
                QPixmap pm(":/icons/displaybg1.png");
                pal.setBrush(QPalette::Background, QBrush(pm));
        } else {
                pal.setColor(QPalette::Background, Qt::black);
        }
        m_ui.ChannelInfoFrame->setPalette(pal);
        m_ui.StreamVoiceCountTextLabel->setPalette(pal);
}


// Maximum volume slider accessors.
void ChannelStrip::setMaxVolume ( int iMaxVolume )
{
        m_iDirtyChange++;
        m_ui.VolumeSlider->setRange(0, iMaxVolume);
        m_ui.VolumeSpinBox->setRange(0, iMaxVolume);
        m_iDirtyChange--;
}


// Channel setup dialog slot.
bool ChannelStrip::channelSetup (void)
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel setup dialog.
        bool bResult = m_pChannel->channelSetup(this);
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Channel mute slot.
bool ChannelStrip::channelMute ( bool bMute )
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel mute method.
        bool bResult = m_pChannel->setChannelMute(bMute);
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Channel solo slot.
bool ChannelStrip::channelSolo ( bool bSolo )
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel solo method.
        bool bResult = m_pChannel->setChannelSolo(bSolo);
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Channel edit slot.
void ChannelStrip::channelEdit (void)
{
        if (m_pChannel == NULL)
                return;

        m_pChannel->editChannel();
}


// Channel reset slot.
bool ChannelStrip::channelReset (void)
{
        if (m_pChannel == NULL)
                return false;

        // Invoke the channel reset method.
        bool bResult = m_pChannel->channelReset();
        // Notify that this channel has changed.
        if (bResult)
                emit channelChanged(this);

        return bResult;
}


// Update the channel instrument name.
bool ChannelStrip::updateInstrumentName ( bool bForce )
{
        if (m_pChannel == NULL)
                return false;

        // Do we refresh the actual name?
        if (bForce)
                m_pChannel->updateInstrumentName();

        // Instrument name...
        if (m_pChannel->instrumentName().isEmpty()) {
                if (m_pChannel->instrumentStatus() >= 0) {
                        m_ui.InstrumentNameTextLabel->setText(
                                ' ' + qsamplerChannel::loadingInstrument());
                } else {
                        m_ui.InstrumentNameTextLabel->setText(
                                ' ' + qsamplerChannel::noInstrumentName());
                }
        } else {
                m_ui.InstrumentNameTextLabel->setText(
                        ' ' + m_pChannel->instrumentName());
        }

        return true;
}


// Do the dirty volume change.
bool ChannelStrip::updateChannelVolume (void)
{
        if (m_pChannel == NULL)
                return false;

        // Convert...
        int iVolume = ::lroundf(100.0f * m_pChannel->volume());
        // And clip...
        if (iVolume < 0)
                iVolume = 0;

        // Flag it here, to avoid infinite recursion.
        m_iDirtyChange++;
        m_ui.VolumeSlider->setValue(iVolume);
        m_ui.VolumeSpinBox->setValue(iVolume);
        m_iDirtyChange--;

        return true;
}


// Update whole channel info state.
bool ChannelStrip::updateChannelInfo (void)
{
        if (m_pChannel == NULL)
                return false;

        // Check for error limit/recycle...
        if (m_iErrorCount > QSAMPLER_ERROR_LIMIT)
                return true;

        // Update strip caption.
        QString sText = m_pChannel->channelName();
        setWindowTitle(sText);
        m_ui.ChannelSetupPushButton->setText('&' + sText);

        // Check if we're up and connected.
        MainForm* pMainForm = MainForm::getInstance();
        if (pMainForm->client() == NULL)
                return false;

        // Read actual channel information.
        m_pChannel->updateChannelInfo();

        // Engine name...
        if (m_pChannel->engineName().isEmpty()) {
                m_ui.EngineNameTextLabel->setText(
                        ' ' + qsamplerChannel::noEngineName());
        } else {
                m_ui.EngineNameTextLabel->setText(
                        ' ' + m_pChannel->engineName());
        }

        // Instrument name...
        updateInstrumentName(false);

        // MIDI Port/Channel...
        QString sMidiPortChannel = QString::number(m_pChannel->midiPort()) + " / ";
        if (m_pChannel->midiChannel() == LSCP_MIDI_CHANNEL_ALL)
                sMidiPortChannel += tr("All");
        else
                sMidiPortChannel += QString::number(m_pChannel->midiChannel() + 1);
        m_ui.MidiPortChannelTextLabel->setText(sMidiPortChannel);

        // Common palette...
        QPalette pal;
        const QColor& rgbFore = pal.color(QPalette::Foreground);

        // Instrument status...
        int iInstrumentStatus = m_pChannel->instrumentStatus();
        if (iInstrumentStatus < 0) {
                pal.setColor(QPalette::Foreground, Qt::red);
                m_ui.InstrumentStatusTextLabel->setPalette(pal);
                m_ui.InstrumentStatusTextLabel->setText(
                        tr("ERR%1").arg(iInstrumentStatus));
                m_iErrorCount++;
                return false;
        }
        // All seems normal...
        pal.setColor(QPalette::Foreground,
                iInstrumentStatus < 100 ? Qt::yellow : Qt::green);
        m_ui.InstrumentStatusTextLabel->setPalette(pal);
        m_ui.InstrumentStatusTextLabel->setText(
                QString::number(iInstrumentStatus) + '%');
        m_iErrorCount = 0;

#ifdef CONFIG_MUTE_SOLO
        // Mute/Solo button state coloring...
        bool bMute = m_pChannel->channelMute();
        const QColor& rgbButton = pal.color(QPalette::Button);
        pal.setColor(QPalette::Foreground, rgbFore);
        pal.setColor(QPalette::Button, bMute ? Qt::yellow : rgbButton);
        m_ui.ChannelMutePushButton->setPalette(pal);
        m_ui.ChannelMutePushButton->setDown(bMute);
        bool bSolo = m_pChannel->channelSolo();
        pal.setColor(QPalette::Button, bSolo ? Qt::cyan : rgbButton);   
        m_ui.ChannelSoloPushButton->setPalette(pal);
        m_ui.ChannelSoloPushButton->setDown(bSolo);
#else
        m_ui.ChannelMutePushButton->setEnabled(false);
        m_ui.ChannelSoloPushButton->setEnabled(false);
#endif

        // And update the both GUI volume elements;
        // return success if, and only if, intrument is fully loaded...
        return updateChannelVolume() && (iInstrumentStatus == 100);
}


// Update whole channel usage state.
bool ChannelStrip::updateChannelUsage (void)
{
        if (m_pChannel == NULL)
                return false;

        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm->client() == NULL)
                return false;

        // This only makes sense on fully loaded channels...
        if (m_pChannel->instrumentStatus() < 100)
                return false;

        // Get current channel voice count.
        int iVoiceCount  = ::lscp_get_channel_voice_count(
                pMainForm->client(), m_pChannel->channelID());
// Get current stream count.
        int iStreamCount = ::lscp_get_channel_stream_count(
                pMainForm->client(), m_pChannel->channelID());
        // Get current channel buffer fill usage.
        // As benno has suggested this is the percentage usage
        // of the least filled buffer stream...
        int iStreamUsage = ::lscp_get_channel_stream_usage(
                pMainForm->client(), m_pChannel->channelID());;

        // Update the GUI elements...
        m_ui.StreamUsageProgressBar->setValue(iStreamUsage);
        m_ui.StreamVoiceCountTextLabel->setText(
                QString("%1 / %2").arg(iStreamCount).arg(iVoiceCount));

        // We're clean.
        return true;
}


// Volume change slot.
void ChannelStrip::volumeChanged ( int iVolume )
{
        if (m_pChannel == NULL)
                return;

        // Avoid recursion.
        if (m_iDirtyChange > 0)
                return;

        // Convert and clip.
        float fVolume = (float) iVolume / 100.0f;
        if (fVolume < 0.001f)
                fVolume = 0.0f;

        // Update the GUI elements.
        if (m_pChannel->setVolume(fVolume)) {
                updateChannelVolume();
                emit channelChanged(this);
        }
}


// Context menu event handler.
void ChannelStrip::contextMenuEvent( QContextMenuEvent *pEvent )
{
        if (m_pChannel == NULL)
                return;

        // We'll just show up the main form's edit menu (thru qsamplerChannel).
        m_pChannel->contextMenuEvent(pEvent);
}


// Error count hackish accessors.
void ChannelStrip::resetErrorCount (void)
{
        m_iErrorCount = 0;
}

} // namespace QSampler


// end of qsamplerChannelStrip.cpp
1	capela	1464	// qsamplerChannelStrip.cpp
2			//
3			/****************************************************************************
4			Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved.
5			Copyright (C) 2007, Christian Schoenebeck
6
7			This program is free software; you can redistribute it and/or
8			modify it under the terms of the GNU General Public License
9			as published by the Free Software Foundation; either version 2
10			of the License, or (at your option) any later version.
11
12			This program is distributed in the hope that it will be useful,
13			but WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			GNU General Public License for more details.
16
17			You should have received a copy of the GNU General Public License along
18			with this program; if not, write to the Free Software Foundation, Inc.,
19			51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20
21			*****************************************************************************/
22
23	capela	1499	#include "qsamplerAbout.h"
24	schoenebeck	1461	#include "qsamplerChannelStrip.h"
25
26			#include "qsamplerMainForm.h"
27
28	capela	1499	#include <QDragEnterEvent>
29	schoenebeck	1461	#include <QUrl>
30
31			// Channel status/usage usage limit control.
32			#define QSAMPLER_ERROR_LIMIT 3
33
34	capela	1510	// Needed for lroundf()
35			#include <math.h>
36
37	schoenebeck	1461	namespace QSampler {
38
39	capela	1510	#ifndef CONFIG_ROUND
40			static inline long lroundf ( float x )
41			{
42			if (x >= 0.0f)
43			return long(x + 0.5f);
44			else
45			return long(x - 0.5f);
46			}
47			#endif
48
49	capela	1509	ChannelStrip::ChannelStrip ( QWidget* pParent, Qt::WindowFlags wflags )
50			: QWidget(pParent, wflags)
51			{
52	capela	1510	m_ui.setupUi(this);
53	schoenebeck	1461
54	capela	1510	// Initialize locals.
55			m_pChannel = NULL;
56			m_iDirtyChange = 0;
57			m_iErrorCount = 0;
58	schoenebeck	1461
59	capela	1510	// Try to restore normal window positioning.
60			adjustSize();
61	capela	1466
62	capela	1509	QObject::connect(m_ui.ChannelSetupPushButton,
63	capela	1466	SIGNAL(clicked()),
64			SLOT(channelSetup()));
65	capela	1509	QObject::connect(m_ui.ChannelMutePushButton,
66	capela	1466	SIGNAL(toggled(bool)),
67			SLOT(channelMute(bool)));
68	capela	1509	QObject::connect(m_ui.ChannelSoloPushButton,
69	capela	1466	SIGNAL(toggled(bool)),
70			SLOT(channelSolo(bool)));
71	capela	1509	QObject::connect(m_ui.VolumeSlider,
72	capela	1466	SIGNAL(valueChanged(int)),
73			SLOT(volumeChanged(int)));
74	capela	1509	QObject::connect(m_ui.VolumeSpinBox,
75	capela	1466	SIGNAL(valueChanged(int)),
76			SLOT(volumeChanged(int)));
77	capela	1509	QObject::connect(m_ui.ChannelEditPushButton,
78	capela	1466	SIGNAL(clicked()),
79			SLOT(channelEdit()));
80	schoenebeck	1461	}
81
82	capela	1513
83			ChannelStrip::~ChannelStrip (void)
84			{
85	capela	1510	// Destroy existing channel descriptor.
86			if (m_pChannel)
87			delete m_pChannel;
88			m_pChannel = NULL;
89	schoenebeck	1461	}
90
91
92	capela	1499	// Window drag-n-drop event handlers.
93			void ChannelStrip::dragEnterEvent ( QDragEnterEvent* pDragEnterEvent )
94	schoenebeck	1461	{
95			if (m_pChannel == NULL)
96	capela	1499	return;
97
98			bool bAccept = false;
99
100			if (pDragEnterEvent->source() == NULL) {
101			const QMimeData *pMimeData = pDragEnterEvent->mimeData();
102			if (pMimeData && pMimeData->hasUrls()) {
103			QListIterator<QUrl> iter(pMimeData->urls());
104			while (iter.hasNext()) {
105			const QString& sFilename = iter.next().toLocalFile();
106			if (!sFilename.isEmpty()) {
107			bAccept = qsamplerChannel::isInstrumentFile(sFilename);
108			break;
109	schoenebeck	1461	}
110			}
111			}
112			}
113
114	capela	1499	if (bAccept)
115			pDragEnterEvent->accept();
116			else
117			pDragEnterEvent->ignore();
118	schoenebeck	1461	}
119
120
121			void ChannelStrip::dropEvent ( QDropEvent* pDropEvent )
122			{
123	capela	1499	if (m_pChannel == NULL)
124			return;
125	schoenebeck	1461
126	capela	1499	if (pDropEvent->source())
127			return;
128
129			const QMimeData *pMimeData = pDropEvent->mimeData();
130			if (pMimeData && pMimeData->hasUrls()) {
131			QStringList files;
132			QListIterator<QUrl> iter(pMimeData->urls());
133			while (iter.hasNext()) {
134			const QString& sFilename = iter.next().toLocalFile();
135			if (!sFilename.isEmpty()) {
136			// Go and set the dropped instrument filename...
137			m_pChannel->setInstrument(sFilename, 0);
138			// Open up the channel dialog.
139			channelSetup();
140			break;
141			}
142			}
143	schoenebeck	1461	}
144			}
145
146
147			// Channel strip setup formal initializer.
148			void ChannelStrip::setup ( qsamplerChannel *pChannel )
149			{
150	capela	1510	// Destroy any previous channel descriptor;
151			// (remember that once setup we own it!)
152			if (m_pChannel)
153			delete m_pChannel;
154	schoenebeck	1461
155	capela	1510	// Set the new one...
156			m_pChannel = pChannel;
157	schoenebeck	1461
158	capela	1510	// Stabilize this around.
159			updateChannelInfo();
160	schoenebeck	1461
161			// We'll accept drops from now on...
162			if (m_pChannel)
163			setAcceptDrops(true);
164			}
165
166	capela	1513
167	schoenebeck	1461	// Channel secriptor accessor.
168	capela	1509	qsamplerChannel *ChannelStrip::channel (void) const
169	schoenebeck	1461	{
170	capela	1510	return m_pChannel;
171	schoenebeck	1461	}
172
173
174			// Messages view font accessors.
175	capela	1509	QFont ChannelStrip::displayFont (void) const
176	schoenebeck	1461	{
177	capela	1510	return m_ui.EngineNameTextLabel->font();
178	schoenebeck	1461	}
179
180			void ChannelStrip::setDisplayFont ( const QFont & font )
181			{
182	capela	1510	m_ui.EngineNameTextLabel->setFont(font);
183			m_ui.MidiPortChannelTextLabel->setFont(font);
184			m_ui.InstrumentNameTextLabel->setFont(font);
185			m_ui.InstrumentStatusTextLabel->setFont(font);
186	schoenebeck	1461	}
187
188
189			// Channel display background effect.
190			void ChannelStrip::setDisplayEffect ( bool bDisplayEffect )
191			{
192	capela	1499	QPalette pal;
193	capela	1507	pal.setColor(QPalette::Foreground, Qt::yellow);
194	capela	1509	m_ui.EngineNameTextLabel->setPalette(pal);
195			m_ui.MidiPortChannelTextLabel->setPalette(pal);
196	capela	1499	pal.setColor(QPalette::Foreground, Qt::green);
197			if (bDisplayEffect) {
198			QPixmap pm(":/icons/displaybg1.png");
199			pal.setBrush(QPalette::Background, QBrush(pm));
200			} else {
201			pal.setColor(QPalette::Background, Qt::black);
202			}
203	capela	1509	m_ui.ChannelInfoFrame->setPalette(pal);
204			m_ui.StreamVoiceCountTextLabel->setPalette(pal);
205	schoenebeck	1461	}
206
207
208			// Maximum volume slider accessors.
209			void ChannelStrip::setMaxVolume ( int iMaxVolume )
210			{
211	capela	1510	m_iDirtyChange++;
212			m_ui.VolumeSlider->setRange(0, iMaxVolume);
213			m_ui.VolumeSpinBox->setRange(0, iMaxVolume);
214			m_iDirtyChange--;
215	schoenebeck	1461	}
216
217
218			// Channel setup dialog slot.
219			bool ChannelStrip::channelSetup (void)
220			{
221			if (m_pChannel == NULL)
222			return false;
223
224			// Invoke the channel setup dialog.
225			bool bResult = m_pChannel->channelSetup(this);
226			// Notify that this channel has changed.
227			if (bResult)
228			emit channelChanged(this);
229
230			return bResult;
231			}
232
233
234			// Channel mute slot.
235			bool ChannelStrip::channelMute ( bool bMute )
236			{
237			if (m_pChannel == NULL)
238			return false;
239
240			// Invoke the channel mute method.
241			bool bResult = m_pChannel->setChannelMute(bMute);
242			// Notify that this channel has changed.
243			if (bResult)
244			emit channelChanged(this);
245
246			return bResult;
247			}
248
249
250			// Channel solo slot.
251			bool ChannelStrip::channelSolo ( bool bSolo )
252			{
253			if (m_pChannel == NULL)
254			return false;
255
256			// Invoke the channel solo method.
257			bool bResult = m_pChannel->setChannelSolo(bSolo);
258			// Notify that this channel has changed.
259			if (bResult)
260			emit channelChanged(this);
261
262			return bResult;
263			}
264
265
266			// Channel edit slot.
267			void ChannelStrip::channelEdit (void)
268			{
269			if (m_pChannel == NULL)
270			return;
271
272			m_pChannel->editChannel();
273			}
274
275
276			// Channel reset slot.
277			bool ChannelStrip::channelReset (void)
278			{
279			if (m_pChannel == NULL)
280			return false;
281
282			// Invoke the channel reset method.
283			bool bResult = m_pChannel->channelReset();
284			// Notify that this channel has changed.
285			if (bResult)
286			emit channelChanged(this);
287
288			return bResult;
289			}
290
291
292			// Update the channel instrument name.
293			bool ChannelStrip::updateInstrumentName ( bool bForce )
294			{
295			if (m_pChannel == NULL)
296			return false;
297
298			// Do we refresh the actual name?
299			if (bForce)
300			m_pChannel->updateInstrumentName();
301
302			// Instrument name...
303			if (m_pChannel->instrumentName().isEmpty()) {
304	capela	1513	if (m_pChannel->instrumentStatus() >= 0) {
305			m_ui.InstrumentNameTextLabel->setText(
306			' ' + qsamplerChannel::loadingInstrument());
307			} else {
308			m_ui.InstrumentNameTextLabel->setText(
309			' ' + qsamplerChannel::noInstrumentName());
310			}
311			} else {
312			m_ui.InstrumentNameTextLabel->setText(
313			' ' + m_pChannel->instrumentName());
314			}
315	schoenebeck	1461
316			return true;
317			}
318
319
320			// Do the dirty volume change.
321			bool ChannelStrip::updateChannelVolume (void)
322			{
323	capela	1510	if (m_pChannel == NULL)
324			return false;
325	schoenebeck	1461
326	capela	1510	// Convert...
327			int iVolume = ::lroundf(100.0f * m_pChannel->volume());
328			// And clip...
329			if (iVolume < 0)
330			iVolume = 0;
331	schoenebeck	1461
332	capela	1510	// Flag it here, to avoid infinite recursion.
333			m_iDirtyChange++;
334			m_ui.VolumeSlider->setValue(iVolume);
335			m_ui.VolumeSpinBox->setValue(iVolume);
336			m_iDirtyChange--;
337	schoenebeck	1461
338	capela	1510	return true;
339	schoenebeck	1461	}
340
341
342			// Update whole channel info state.
343			bool ChannelStrip::updateChannelInfo (void)
344			{
345	capela	1510	if (m_pChannel == NULL)
346			return false;
347	schoenebeck	1461
348			// Check for error limit/recycle...
349			if (m_iErrorCount > QSAMPLER_ERROR_LIMIT)
350			return true;
351
352	capela	1510	// Update strip caption.
353			QString sText = m_pChannel->channelName();
354			setWindowTitle(sText);
355	capela	1513	m_ui.ChannelSetupPushButton->setText('&' + sText);
356	schoenebeck	1461
357	capela	1510	// Check if we're up and connected.
358	schoenebeck	1461	MainForm* pMainForm = MainForm::getInstance();
359			if (pMainForm->client() == NULL)
360			return false;
361
362	capela	1510	// Read actual channel information.
363			m_pChannel->updateChannelInfo();
364	schoenebeck	1461
365	capela	1510	// Engine name...
366	capela	1513	if (m_pChannel->engineName().isEmpty()) {
367			m_ui.EngineNameTextLabel->setText(
368			' ' + qsamplerChannel::noEngineName());
369			} else {
370			m_ui.EngineNameTextLabel->setText(
371			' ' + m_pChannel->engineName());
372			}
373	schoenebeck	1461
374			// Instrument name...
375			updateInstrumentName(false);
376
377	capela	1510	// MIDI Port/Channel...
378	schoenebeck	1461	QString sMidiPortChannel = QString::number(m_pChannel->midiPort()) + " / ";
379			if (m_pChannel->midiChannel() == LSCP_MIDI_CHANNEL_ALL)
380			sMidiPortChannel += tr("All");
381			else
382			sMidiPortChannel += QString::number(m_pChannel->midiChannel() + 1);
383	capela	1509	m_ui.MidiPortChannelTextLabel->setText(sMidiPortChannel);
384	schoenebeck	1461
385	capela	1499	// Common palette...
386			QPalette pal;
387			const QColor& rgbFore = pal.color(QPalette::Foreground);
388
389	capela	1510	// Instrument status...
390			int iInstrumentStatus = m_pChannel->instrumentStatus();
391			if (iInstrumentStatus < 0) {
392	capela	1499	pal.setColor(QPalette::Foreground, Qt::red);
393	capela	1509	m_ui.InstrumentStatusTextLabel->setPalette(pal);
394	capela	1513	m_ui.InstrumentStatusTextLabel->setText(
395			tr("ERR%1").arg(iInstrumentStatus));
396	capela	1510	m_iErrorCount++;
397			return false;
398			}
399			// All seems normal...
400	capela	1499	pal.setColor(QPalette::Foreground,
401			iInstrumentStatus < 100 ? Qt::yellow : Qt::green);
402	capela	1510	m_ui.InstrumentStatusTextLabel->setPalette(pal);
403	capela	1513	m_ui.InstrumentStatusTextLabel->setText(
404			QString::number(iInstrumentStatus) + '%');
405	capela	1510	m_iErrorCount = 0;
406	schoenebeck	1461
407			#ifdef CONFIG_MUTE_SOLO
408	capela	1510	// Mute/Solo button state coloring...
409			bool bMute = m_pChannel->channelMute();
410	capela	1499	const QColor& rgbButton = pal.color(QPalette::Button);
411			pal.setColor(QPalette::Foreground, rgbFore);
412			pal.setColor(QPalette::Button, bMute ? Qt::yellow : rgbButton);
413	capela	1509	m_ui.ChannelMutePushButton->setPalette(pal);
414			m_ui.ChannelMutePushButton->setDown(bMute);
415	capela	1510	bool bSolo = m_pChannel->channelSolo();
416	capela	1499	pal.setColor(QPalette::Button, bSolo ? Qt::cyan : rgbButton);
417	capela	1509	m_ui.ChannelSoloPushButton->setPalette(pal);
418			m_ui.ChannelSoloPushButton->setDown(bSolo);
419	schoenebeck	1461	#else
420	capela	1509	m_ui.ChannelMutePushButton->setEnabled(false);
421			m_ui.ChannelSoloPushButton->setEnabled(false);
422	schoenebeck	1461	#endif
423
424	capela	1510	// And update the both GUI volume elements;
425			// return success if, and only if, intrument is fully loaded...
426			return updateChannelVolume() && (iInstrumentStatus == 100);
427	schoenebeck	1461	}
428
429
430			// Update whole channel usage state.
431			bool ChannelStrip::updateChannelUsage (void)
432			{
433	capela	1510	if (m_pChannel == NULL)
434			return false;
435	schoenebeck	1461
436			MainForm *pMainForm = MainForm::getInstance();
437			if (pMainForm->client() == NULL)
438			return false;
439
440			// This only makes sense on fully loaded channels...
441			if (m_pChannel->instrumentStatus() < 100)
442	capela	1510	return false;
443	schoenebeck	1461
444	capela	1510	// Get current channel voice count.
445	capela	1513	int iVoiceCount = ::lscp_get_channel_voice_count(
446			pMainForm->client(), m_pChannel->channelID());
447	capela	1510	// Get current stream count.
448	capela	1513	int iStreamCount = ::lscp_get_channel_stream_count(
449			pMainForm->client(), m_pChannel->channelID());
450	capela	1510	// Get current channel buffer fill usage.
451			// As benno has suggested this is the percentage usage
452			// of the least filled buffer stream...
453	capela	1513	int iStreamUsage = ::lscp_get_channel_stream_usage(
454			pMainForm->client(), m_pChannel->channelID());;
455	schoenebeck	1461
456	capela	1510	// Update the GUI elements...
457			m_ui.StreamUsageProgressBar->setValue(iStreamUsage);
458	capela	1513	m_ui.StreamVoiceCountTextLabel->setText(
459			QString("%1 / %2").arg(iStreamCount).arg(iVoiceCount));
460	schoenebeck	1461
461	capela	1510	// We're clean.
462			return true;
463	schoenebeck	1461	}
464
465
466			// Volume change slot.
467			void ChannelStrip::volumeChanged ( int iVolume )
468			{
469	capela	1510	if (m_pChannel == NULL)
470			return;
471	schoenebeck	1461
472	capela	1510	// Avoid recursion.
473			if (m_iDirtyChange > 0)
474			return;
475	schoenebeck	1461
476	capela	1510	// Convert and clip.
477			float fVolume = (float) iVolume / 100.0f;
478			if (fVolume < 0.001f)
479			fVolume = 0.0f;
480	schoenebeck	1461
481	capela	1510	// Update the GUI elements.
482			if (m_pChannel->setVolume(fVolume)) {
483			updateChannelVolume();
484			emit channelChanged(this);
485			}
486	schoenebeck	1461	}
487
488
489			// Context menu event handler.
490			void ChannelStrip::contextMenuEvent( QContextMenuEvent *pEvent )
491			{
492	capela	1510	if (m_pChannel == NULL)
493			return;
494	schoenebeck	1461
495	capela	1510	// We'll just show up the main form's edit menu (thru qsamplerChannel).
496			m_pChannel->contextMenuEvent(pEvent);
497	schoenebeck	1461	}
498
499
500			// Error count hackish accessors.
501			void ChannelStrip::resetErrorCount (void)
502			{
503			m_iErrorCount = 0;
504			}
505
506			} // namespace QSampler
507	capela	1464
508
509			// end of qsamplerChannelStrip.cpp