diff options
Diffstat (limited to 'src/plugins/Input/wildmidi/decoder_wildmidi.cpp')
| -rw-r--r-- | src/plugins/Input/wildmidi/decoder_wildmidi.cpp | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/src/plugins/Input/wildmidi/decoder_wildmidi.cpp b/src/plugins/Input/wildmidi/decoder_wildmidi.cpp new file mode 100644 index 000000000..48b2c636e --- /dev/null +++ b/src/plugins/Input/wildmidi/decoder_wildmidi.cpp @@ -0,0 +1,257 @@ +/*************************************************************************** + * Copyright (C) 2008 by Ilya Kotov * + * forkotov02@hotmail.ru * + * * + * 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., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + + +#include <QObject> +#include <QIODevice> +#include <QFile> +#include <math.h> +#include <stdint.h> + +#include <qmmp/constants.h> +#include <qmmp/buffer.h> +#include <qmmp/output.h> +#include <qmmp/recycler.h> + +#include "decoder_wildmidi.h" + +// Decoder class + +DecoderWildMidi::DecoderWildMidi(QObject *parent, DecoderFactory *d, Output *o, const QString &path) + : Decoder(parent, d, o) +{ + m_path = path; + m_inited = FALSE; + m_user_stop = FALSE; + m_output_buf = 0; + m_output_bytes = 0; + m_output_at = 0; + m_bks = 0; + m_done = FALSE; + m_finish = FALSE; + m_freq = 0; + m_bitrate = 0; + m_seekTime = -1.0; + m_totalTime = 0.0; + m_chan = 0; + m_output_size = 0; + //m_context = 0; + midi_ptr = 0; +} + +DecoderWildMidi::~DecoderWildMidi() +{ + deinit(); + if (m_output_buf) + delete [] m_output_buf; + m_output_buf = 0; +} + +void DecoderWildMidi::stop() +{ + m_user_stop = TRUE; +} + +void DecoderWildMidi::flush(bool final) +{ + ulong min = final ? 0 : m_bks; + + while ((! m_done && ! m_finish) && m_output_bytes > min) + { + output()->recycler()->mutex()->lock (); + + while ((! m_done && ! m_finish) && output()->recycler()->full()) + { + mutex()->unlock(); + + output()->recycler()->cond()->wait(output()->recycler()->mutex()); + + mutex()->lock (); + m_done = m_user_stop; + } + + if (m_user_stop || m_finish) + { + m_inited = FALSE; + m_done = TRUE; + } + else + { + m_output_bytes -= produceSound(m_output_buf, m_output_bytes, m_bitrate, m_chan); + m_output_size += m_bks; + m_output_at = m_output_bytes; + } + + if (output()->recycler()->full()) + { + output()->recycler()->cond()->wakeOne(); + } + + output()->recycler()->mutex()->unlock(); + } +} + +bool DecoderWildMidi::initialize() +{ + m_bks = Buffer::size(); + m_inited = m_user_stop = m_done = m_finish = FALSE; + m_freq = m_bitrate = 0; + m_chan = 0; + m_output_size = 0; + m_seekTime = -1.0; + m_totalTime = 0.0; + _WM_Info *wm_info = 0; //TODO fix memory leak + + if (! m_output_buf) + m_output_buf = new char[globalBufferSize]; + m_output_at = 0; + m_output_bytes = 0; + + wm_info = new _WM_Info; + + unsigned long int mixer_options = 0; + + if (WildMidi_Init ("/etc/timidity/timidity.cfg", 44100, mixer_options) == -1) + return FALSE; + + midi_ptr = WildMidi_Open (m_path.toLocal8Bit()); + + wm_info = WildMidi_GetInfo(midi_ptr); + + m_totalTime = wm_info->approx_total_samples / 44100; + + configure(44100, 2, 16); + + m_inited = TRUE; + qDebug("DecoderWildMidi: initialize succes"); + return TRUE; +} + +qint64 DecoderWildMidi::lengthInSeconds() +{ + if (!m_inited) + return 0; + + return m_totalTime; +} + + +void DecoderWildMidi::seek(qint64 pos) +{ + m_seekTime = pos; +} + +void DecoderWildMidi::deinit() +{ + m_inited = m_user_stop = m_done = m_finish = FALSE; + m_freq = m_bitrate = 0; + m_chan = 0; + m_output_size = 0; + WildMidi_Shutdown(); +} + +void DecoderWildMidi::run() +{ + mutex()->lock (); + + ulong len = 0; + + _WM_Info *wm_info = new _WM_Info; + + if (!m_inited) + { + mutex()->unlock(); + return; + } + mutex()->unlock(); + + while (! m_done && ! m_finish) + { + mutex()->lock (); + + //seeking + + if (m_seekTime >= 0.0) + { + // WavpackSeekSample (m_context, m_seekTime * m_freq); + qint64 i = m_seekTime *44100; + long unsigned int *sample_pos = (long unsigned int *) &i; + WildMidi_FastSeek(midi_ptr, sample_pos); + m_seekTime = -1.0; + } + + wm_info = WildMidi_GetInfo(midi_ptr); + + if (wm_info->approx_total_samples > wm_info->current_sample) + len = WildMidi_GetOutput (midi_ptr, m_output_buf, globalBufferSize - m_output_at); + else + len = 0; + + if (len > 0) + { + m_bitrate = 0; //TODO calculate bitrate using file size and length + m_output_at += len; + m_output_bytes += len; + + if (output()) + flush(); + + } + else if (len == 0) + { + flush(TRUE); + + if (output()) + { + output()->recycler()->mutex()->lock (); + // end of stream + while (! output()->recycler()->empty() && ! m_user_stop) + { + output()->recycler()->cond()->wakeOne(); + mutex()->unlock(); + output()->recycler()->cond()->wait(output()->recycler()->mutex()); + mutex()->lock (); + } + output()->recycler()->mutex()->unlock(); + } + + m_done = TRUE; + if (! m_user_stop) + { + m_finish = TRUE; + } + } + else + { + // error while reading + qWarning("DecoderWildMidi: Error while decoding stream, file appears to be corrupted"); + m_finish = TRUE; + } + mutex()->unlock(); + } + + mutex()->lock (); + + if (m_finish) + finish(); + + mutex()->unlock(); + deinit(); +} |