AudioClipWorkflow.cpp 5.89 KB
Newer Older
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
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
/*****************************************************************************
 * AudioClipWorkflow.cpp : Clip workflow. Will extract a single frame from a VLCMedia
 *****************************************************************************
 * Copyright (C) 2008-2009 the VLMC team
 *
 * 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"

AudioClipWorkflow::AudioClipWorkflow( Clip* clip ) :
28
        ClipWorkflow( clip )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
29
{
30 31 32 33 34
    for ( unsigned int i = 0; i < AudioClipWorkflow::nbBuffers; ++i )
    {
        AudioSample* as = new AudioSample;
        as->buff = NULL;
        m_availableBuffers.push_back( as );
35
        as->debugId = i;
36 37
    }
    debugType = 1;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
38 39 40 41
}

AudioClipWorkflow::~AudioClipWorkflow()
{
42
    while ( m_availableBuffers.isEmpty() == false )
43
        delete m_availableBuffers.dequeue();
44
    while ( m_computedBuffers.isEmpty() == false )
45
        delete m_computedBuffers.dequeue();
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
46 47
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
48 49
void*
AudioClipWorkflow::getLockCallback() const
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
50 51 52 53
{
    return reinterpret_cast<void*>(&AudioClipWorkflow::lock);
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
54 55
void*
AudioClipWorkflow::getUnlockCallback() const
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
56 57 58 59
{
    return reinterpret_cast<void*>(&AudioClipWorkflow::unlock);
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
60 61
void*
AudioClipWorkflow::getOutput( ClipWorkflow::GetMode mode )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
62 63
{
    QMutexLocker    lock( m_renderLock );
64
    QMutexLocker    lock2( m_computedBuffersMutex );
65 66 67

    if ( preGetOutput() == false )
        return NULL;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
68 69
    if ( isEndReached() == true )
        return NULL;
70 71
    if ( mode == ClipWorkflow::Get )
        qCritical() << "A sound buffer should never be asked with 'Get' mode";
72 73
    ::StackedBuffer<AudioSample*>* buff = new StackedBuffer(
            m_computedBuffers.dequeue(), this, true );
74
    postGetOutput();
75
    return buff;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
76 77 78 79 80
}

void        AudioClipWorkflow::initVlcOutput()
{
    m_vlcMedia->addOption( ":no-sout-video" );
81
    m_vlcMedia->addOption( ":no-video" );
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
82 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() ) );
    m_vlcMedia->addOption( ":sout-transcode-acodec=s16l" );
87 88
    m_vlcMedia->addOption( ":sout-transcode-samplerate=48000" );
    m_vlcMedia->addOption( ":sout-transcode-channels=2" );
89
    m_vlcMedia->addOption( ":sout-smem-time-sync" );
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
90 91
}

92 93 94 95 96
AudioClipWorkflow::AudioSample*    AudioClipWorkflow::createBuffer( size_t size )
{
    AudioSample* as = new AudioSample;
    as->buff = new uchar[size];
    as->size = size;
97
    as->debugId = -1;
98 99 100
    return as;
}

Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
101 102
void        AudioClipWorkflow::lock( AudioClipWorkflow* cw, uint8_t** pcm_buffer , unsigned int size )
{
103
    QMutexLocker    lock( cw->m_availableBuffersMutex );
104
    cw->m_renderLock->lock();
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
105
    cw->m_computedBuffersMutex->lock();
106

107 108 109 110
    AudioSample* as = NULL;
    if ( cw->m_availableBuffers.isEmpty() == true )
        as = cw->createBuffer( size );
    else
111
    {
112
        as = cw->m_availableBuffers.dequeue();
113 114 115 116 117 118 119
        if ( as->buff == NULL )
        {
            as->buff = new uchar[size];
            as->size = size;
        }
    }
    cw->m_computedBuffers.enqueue( as );
120
    *pcm_buffer = as->buff;
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
121 122 123 124 125
}

void        AudioClipWorkflow::unlock( AudioClipWorkflow* cw, uint8_t* pcm_buffer,
                                      unsigned int channels, unsigned int rate,
                                      unsigned int nb_samples, unsigned int bits_per_sample,
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
126
                                      unsigned int size, qint64 pts )
Hugo Beauzee-Luyssen's avatar
Hugo Beauzee-Luyssen committed
127 128 129 130 131
{
    Q_UNUSED( pcm_buffer );
    Q_UNUSED( rate );
    Q_UNUSED( bits_per_sample );
    Q_UNUSED( size );
132

133
    cw->computePtsDiff( pts );
134
    AudioSample* as = cw->m_computedBuffers.last();
135
    if ( as->buff != NULL )
136
    {
137 138 139
        as->nbSample = nb_samples;
        as->nbChannels = channels;
        as->ptsDiff = cw->m_currentPts - cw->m_previousPts;
140
    }
141
    cw->commonUnlock();
142
    cw->m_renderLock->unlock();
143
    cw->m_computedBuffersMutex->unlock();
144 145
}

146
uint32_t    AudioClipWorkflow::getNbComputedBuffers() const
147 148 149
{
    return m_computedBuffers.count();
}
150 151 152 153 154

uint32_t    AudioClipWorkflow::getMaxComputedBuffers() const
{
    return AudioClipWorkflow::nbBuffers;
}
155 156 157 158 159 160

void        AudioClipWorkflow::releaseBuffer( AudioSample *sample )
{
    QMutexLocker    lock( m_availableBuffersMutex );
    m_availableBuffers.enqueue( sample );
}
161 162 163

void        AudioClipWorkflow::flushComputedBuffers()
{
164 165
    QMutexLocker    lock( m_availableBuffersMutex );
    QMutexLocker    lock2( m_computedBuffersMutex );
166 167 168 169 170 171

    while ( m_computedBuffers.isEmpty() == false )
    {
        m_availableBuffers.enqueue( m_computedBuffers.dequeue() );
    }
}
172 173 174 175 176 177 178 179 180 181 182

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

void    AudioClipWorkflow::StackedBuffer::release()
{
183
    if ( m_mustRelease == true && m_poolHandler.isNull() == false )
184 185 186
        m_poolHandler->releaseBuffer( m_buff );
    delete this;
}