AudioClipWorkflow.cpp 6.01 KB
Newer Older
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
1 2 3
/*****************************************************************************
 * AudioClipWorkflow.cpp : Clip workflow. Will extract a single frame from a VLCMedia
 *****************************************************************************
Ludovic Fauvet's avatar
Ludovic Fauvet committed
4
 * Copyright (C) 2008-2010 VideoLAN
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 *
 * Authors: Hugo Beauzee-Luyssen <hugo@vlmc.org>
 *
 * 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 <QtDebug>

#include "AudioClipWorkflow.h"
26
#include "VLCMedia.h"
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
27 28

AudioClipWorkflow::AudioClipWorkflow( Clip* clip ) :
29
        ClipWorkflow( clip )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
30
{
31 32 33 34 35
    for ( unsigned int i = 0; i < AudioClipWorkflow::nbBuffers; ++i )
    {
        AudioSample* as = new AudioSample;
        as->buff = NULL;
        m_availableBuffers.push_back( as );
36
        as->debugId = i;
37 38
    }
    debugType = 1;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
39 40 41 42
}

AudioClipWorkflow::~AudioClipWorkflow()
{
43
    while ( m_availableBuffers.isEmpty() == false )
44
        delete m_availableBuffers.dequeue();
45
    while ( m_computedBuffers.isEmpty() == false )
46
        delete m_computedBuffers.dequeue();
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
47 48
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
49 50
void*
AudioClipWorkflow::getLockCallback() const
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
51 52 53 54
{
    return reinterpret_cast<void*>(&AudioClipWorkflow::lock);
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
55 56
void*
AudioClipWorkflow::getUnlockCallback() const
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
57 58 59 60
{
    return reinterpret_cast<void*>(&AudioClipWorkflow::unlock);
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
61 62
void*
AudioClipWorkflow::getOutput( ClipWorkflow::GetMode mode )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
63 64
{
    QMutexLocker    lock( m_renderLock );
65
    QMutexLocker    lock2( m_computedBuffersMutex );
66 67 68

    if ( preGetOutput() == false )
        return NULL;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
69 70
    if ( isEndReached() == true )
        return NULL;
71 72
    if ( mode == ClipWorkflow::Get )
        qCritical() << "A sound buffer should never be asked with 'Get' mode";
73 74
    ::StackedBuffer<AudioSample*>* buff = new StackedBuffer(
            m_computedBuffers.dequeue(), this, true );
75
    postGetOutput();
76
    return buff;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
77 78 79 80 81
}

void        AudioClipWorkflow::initVlcOutput()
{
    m_vlcMedia->addOption( ":no-sout-video" );
82
    m_vlcMedia->addOption( ":no-video" );
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
83 84 85 86
    m_vlcMedia->addOption( ":sout=#transcode{}:smem" );
    m_vlcMedia->setAudioDataCtx( this );
    m_vlcMedia->setAudioLockCallback( reinterpret_cast<void*>( getLockCallback() ) );
    m_vlcMedia->setAudioUnlockCallback( reinterpret_cast<void*>( getUnlockCallback() ) );
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
87
    m_vlcMedia->addOption( ":sout-transcode-acodec=f32l" );
88 89
    m_vlcMedia->addOption( ":sout-transcode-samplerate=48000" );
    m_vlcMedia->addOption( ":sout-transcode-channels=2" );
90 91 92 93
    if ( m_fullSpeedRender == false )
        m_vlcMedia->addOption( ":sout-smem-time-sync" );
    else
        m_vlcMedia->addOption( ":no-sout-smem-time-sync" );
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
94 95
}

96 97 98 99 100
AudioClipWorkflow::AudioSample*    AudioClipWorkflow::createBuffer( size_t size )
{
    AudioSample* as = new AudioSample;
    as->buff = new uchar[size];
    as->size = size;
101
    as->debugId = -1;
102 103 104
    return as;
}

105
void        AudioClipWorkflow::lock( AudioClipWorkflow* cw, quint8** pcm_buffer , unsigned int size )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
106
{
107
    QMutexLocker    lock( cw->m_availableBuffersMutex );
108
    cw->m_renderLock->lock();
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
109
    cw->m_computedBuffersMutex->lock();
110

111 112 113 114
    AudioSample* as = NULL;
    if ( cw->m_availableBuffers.isEmpty() == true )
        as = cw->createBuffer( size );
    else
115
    {
116
        as = cw->m_availableBuffers.dequeue();
117 118 119 120 121 122 123
        if ( as->buff == NULL )
        {
            as->buff = new uchar[size];
            as->size = size;
        }
    }
    cw->m_computedBuffers.enqueue( as );
124
    *pcm_buffer = as->buff;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
125 126
}

127
void        AudioClipWorkflow::unlock( AudioClipWorkflow* cw, quint8* pcm_buffer,
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
128 129
                                      unsigned int channels, unsigned int rate,
                                      unsigned int nb_samples, unsigned int bits_per_sample,
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
130
                                      unsigned int size, qint64 pts )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
131 132 133 134 135
{
    Q_UNUSED( pcm_buffer );
    Q_UNUSED( rate );
    Q_UNUSED( bits_per_sample );
    Q_UNUSED( size );
136

137
    cw->computePtsDiff( pts );
138
    AudioSample* as = cw->m_computedBuffers.last();
139
    if ( as->buff != NULL )
140
    {
141 142 143
        as->nbSample = nb_samples;
        as->nbChannels = channels;
        as->ptsDiff = cw->m_currentPts - cw->m_previousPts;
144
    }
145
    cw->commonUnlock();
146
    cw->m_renderLock->unlock();
147
    cw->m_computedBuffersMutex->unlock();
148 149
}

150 151
quint32
AudioClipWorkflow::getNbComputedBuffers() const
152 153 154
{
    return m_computedBuffers.count();
}
155

156 157
quint32
AudioClipWorkflow::getMaxComputedBuffers() const
158 159 160
{
    return AudioClipWorkflow::nbBuffers;
}
161 162 163 164 165 166

void        AudioClipWorkflow::releaseBuffer( AudioSample *sample )
{
    QMutexLocker    lock( m_availableBuffersMutex );
    m_availableBuffers.enqueue( sample );
}
167 168 169

void        AudioClipWorkflow::flushComputedBuffers()
{
170 171
    QMutexLocker    lock( m_availableBuffersMutex );
    QMutexLocker    lock2( m_computedBuffersMutex );
172 173 174 175 176 177

    while ( m_computedBuffers.isEmpty() == false )
    {
        m_availableBuffers.enqueue( m_computedBuffers.dequeue() );
    }
}
178 179 180 181 182 183 184 185 186 187 188

AudioClipWorkflow::StackedBuffer::StackedBuffer( AudioClipWorkflow::AudioSample *as,
                                                        AudioClipWorkflow *poolHandler,
                                                        bool mustBeReleased) :
    ::StackedBuffer<AudioClipWorkflow::AudioSample*>( as, mustBeReleased ),
    m_poolHandler( poolHandler )
{
}

void    AudioClipWorkflow::StackedBuffer::release()
{
189
    if ( m_mustRelease == true && m_poolHandler.isNull() == false )
190 191 192
        m_poolHandler->releaseBuffer( m_buff );
    delete this;
}