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enginerecord.cpp
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enginerecord.cpp
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/***************************************************************************
enginerecord.cpp - class to record the mix
-------------------
copyright : (C) 2007 by John Sully
copyright : (C) 2010 by Tobias Rafreider
email :
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "engine/sidechain/enginerecord.h"
#include "preferences/usersettings.h"
#include "control/controlobject.h"
#include "control/controlproxy.h"
#include "encoder/encoder.h"
#ifdef __FFMPEGFILE__
#include "encoder/encoderffmpegmp3.h"
#include "encoder/encoderffmpegvorbis.h"
#else
#include "encoder/encodermp3.h"
#include "encoder/encodervorbis.h"
#endif
#include "mixer/playerinfo.h"
#include "recording/defs_recording.h"
#include "util/event.h"
const int kMetaDataLifeTimeout = 16;
EngineRecord::EngineRecord(UserSettingsPointer pConfig)
: m_pConfig(pConfig),
m_pEncoder(NULL),
m_pSndfile(NULL),
m_frames(0),
m_recordedDuration(0),
m_iMetaDataLife(0),
m_cueTrack(0),
m_bCueIsEnabled(false) {
m_sfInfo.frames = 0;
m_sfInfo.samplerate = 0;
m_sfInfo.channels = 0;
m_sfInfo.format = 0;
m_sfInfo.sections = 0;
m_sfInfo.seekable = 0;
m_pRecReady = new ControlProxy(RECORDING_PREF_KEY, "status", this);
m_pSamplerate = new ControlProxy("[Master]", "samplerate", this);
m_sampleRate = m_pSamplerate->get();
}
EngineRecord::~EngineRecord() {
closeCueFile();
closeFile();
delete m_pRecReady;
delete m_pSamplerate;
}
void EngineRecord::updateFromPreferences() {
m_encoding = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "Encoding")).toLatin1();
// returns a number from 1 .. 10
m_OGGquality = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "OGG_Quality")).toLatin1();
m_MP3quality = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "MP3_Quality")).toLatin1();
m_fileName = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "Path"));
m_baTitle = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "Title")).toLatin1();
m_baAuthor = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "Author")).toLatin1();
m_baAlbum = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "Album")).toLatin1();
m_cueFileName = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "CuePath")).toLatin1();
m_bCueIsEnabled = m_pConfig->getValueString(ConfigKey(RECORDING_PREF_KEY, "CueEnabled")).toInt();
m_sampleRate = m_pSamplerate->get();
// Delete m_pEncoder if it has been initialized (with maybe) different bitrate.
if (m_pEncoder) {
delete m_pEncoder;
m_pEncoder = NULL;
}
if (m_encoding == ENCODING_MP3) {
#ifdef __FFMPEGFILE__
m_pEncoder = new EncoderFfmpegMp3(this);
#else
m_pEncoder = new EncoderMp3(this);
#endif
m_pEncoder->updateMetaData(m_baAuthor.data(),m_baTitle.data(),m_baAlbum.data());
if(m_pEncoder->initEncoder(Encoder::convertToBitrate(m_MP3quality.toInt()),
m_sampleRate) < 0) {
delete m_pEncoder;
m_pEncoder = NULL;
#ifdef __FFMPEGFILE__
qDebug() << "MP3 recording is not supported. FFMPEG mp3 could not be initialized";
#else
qDebug() << "MP3 recording is not supported. Lame could not be initialized";
#endif
}
} else if (m_encoding == ENCODING_OGG) {
#ifdef __FFMPEGFILE__
m_pEncoder = new EncoderFfmpegVorbis(this);
#else
m_pEncoder = new EncoderVorbis(this);
#endif
m_pEncoder->updateMetaData(m_baAuthor.data(),m_baTitle.data(),m_baAlbum.data());
if (m_pEncoder->initEncoder(Encoder::convertToBitrate(m_OGGquality.toInt()),
m_sampleRate) < 0) {
delete m_pEncoder;
m_pEncoder = NULL;
#ifdef __FFMPEGFILE__
qDebug() << "OGG recording is not supported. FFMPEG OGG/Vorbis could not be initialized";
#else
qDebug() << "OGG recording is not supported. OGG/Vorbis library could not be initialized";
#endif
}
}
// If we use WAVE OR AIFF the encoder will be NULL at all times.
}
bool EngineRecord::metaDataHasChanged()
{
//Originally, m_iMetaDataLife was used so that getCurrentPlayingTrack was called
//less often, because it was calculating it.
//Nowadays (since Mixxx 1.11), it just accesses a map on a thread safe method.
TrackPointer pTrack = PlayerInfo::instance().getCurrentPlayingTrack();
if (!pTrack) {
m_iMetaDataLife = kMetaDataLifeTimeout;
return false;
}
//The counter is kept so that changes back and forth with the faders/crossfader
//(like in scratching or other effects) are not counted as multiple track changes
//in the cue file. A better solution could consist of a signal from PlayerInfo and
//a slot that decides if the changes received are valid or are to be ignored once
//the next process call comes. This could also help improve the time written in the CUE.
if (m_iMetaDataLife < kMetaDataLifeTimeout) {
m_iMetaDataLife++;
return false;
}
m_iMetaDataLife = 0;
if (m_pCurrentTrack) {
if (!pTrack->getId().isValid() || !m_pCurrentTrack->getId().isValid()) {
if ((pTrack->getArtist() == m_pCurrentTrack->getArtist()) &&
(pTrack->getTitle() == m_pCurrentTrack->getArtist())) {
return false;
}
}
else if (pTrack->getId() == m_pCurrentTrack->getId()) {
return false;
}
}
m_pCurrentTrack = pTrack;
return true;
}
void EngineRecord::process(const CSAMPLE* pBuffer, const int iBufferSize) {
float recordingStatus = m_pRecReady->get();
if (recordingStatus == RECORD_OFF) {
//qDebug("Setting record flag to: OFF");
if (fileOpen()) {
Event::end("EngineRecord recording");
closeFile(); // Close file and free encoder.
if (m_bCueIsEnabled) {
closeCueFile();
}
emit(isRecording(false, false));
}
} else if (recordingStatus == RECORD_READY) {
// If we are ready for recording, i.e, the output file has been selected, we
// open a new file.
updateFromPreferences(); // Update file location from preferences.
if (openFile()) {
Event::start("EngineRecord recording");
qDebug("Setting record flag to: ON");
m_pRecReady->set(RECORD_ON);
emit(isRecording(true, false)); // will notify the RecordingManager
// Since we just started recording, timeout and clear the metadata.
m_iMetaDataLife = kMetaDataLifeTimeout;
m_pCurrentTrack = TrackPointer();
// clean frames couting and get current sample rate.
m_frames = 0;
m_sampleRate = m_pSamplerate->get();
if (m_bCueIsEnabled) {
openCueFile();
m_cueTrack = 0;
}
} else { // Maybe the encoder could not be initialized
qDebug() << "Could not open" << m_fileName << "for writing.";
qDebug("Setting record flag to: OFF");
m_pRecReady->slotSet(RECORD_OFF);
// An error occurred.
emit(isRecording(false, true));
}
} else if (recordingStatus == RECORD_SPLIT_CONTINUE) {
if (fileOpen()) {
closeFile(); // Close file and free encoder.
if (m_bCueIsEnabled) {
closeCueFile();
}
}
updateFromPreferences(); // Update file location from preferences.
if (openFile()) {
qDebug() << "Splitting to a new file: "<< m_fileName;
m_pRecReady->set(RECORD_ON);
emit(isRecording(true, false)); // will notify the RecordingManager
// Since we just started recording, timeout and clear the metadata.
m_iMetaDataLife = kMetaDataLifeTimeout;
m_pCurrentTrack = TrackPointer();
// clean frames counting and get current sample rate.
m_frames = 0;
m_sampleRate = m_pSamplerate->get();
m_recordedDuration = 0;
if (m_bCueIsEnabled) {
openCueFile();
m_cueTrack = 0;
}
} else { // Maybe the encoder could not be initialized
qDebug() << "Could not open" << m_fileName << "for writing.";
Event::end("EngineRecord recording");
qDebug("Setting record flag to: OFF");
m_pRecReady->slotSet(RECORD_OFF);
// An error occurred.
emit(isRecording(false, true));
}
}
if (recordingStatus == RECORD_ON || recordingStatus == RECORD_SPLIT_CONTINUE) {
// If recording is enabled process audio to compressed or uncompressed data.
if (m_encoding == ENCODING_WAVE || m_encoding == ENCODING_AIFF) {
if (m_pSndfile != NULL) {
sf_write_float(m_pSndfile, pBuffer, iBufferSize);
emit(bytesRecorded(iBufferSize * 2));
}
} else {
if (m_pEncoder) {
// Compress audio. Encoder will call method 'write()' below to
// write a file stream
m_pEncoder->encodeBuffer(pBuffer, iBufferSize);
}
}
//Writing cueLine before updating the time counter since we preffer to be ahead
//rather than late.
if (m_bCueIsEnabled) {
if (metaDataHasChanged()) {
m_cueTrack++;
writeCueLine();
m_cueFile.flush();
}
}
// update frames counting and recorded duration (seconds)
m_frames += iBufferSize / 2;
unsigned long lastDuration = m_recordedDuration;
m_recordedDuration = m_frames / m_sampleRate;
// gets recorded duration and emit signal that will be used
// by RecordingManager to update the label besides start/stop button
if (lastDuration != m_recordedDuration) {
emit(durationRecorded(m_recordedDuration));
}
}
}
QString EngineRecord::getRecordedDurationStr() {
return QString("%1:%2")
.arg(m_recordedDuration / 60, 2, 'f', 0, '0') // minutes
.arg(m_recordedDuration % 60, 2, 'f', 0, '0'); // seconds
}
void EngineRecord::writeCueLine() {
if (!m_pCurrentTrack) {
return;
}
// CDDA is specified as having 75 frames a second
unsigned long cueFrame = ((unsigned long)
((m_frames / (m_sampleRate / 75)))
% 75);
m_cueFile.write(QString(" TRACK %1 AUDIO\n")
.arg((double)m_cueTrack, 2, 'f', 0, '0')
.toLatin1());
m_cueFile.write(QString(" TITLE \"%1\"\n")
.arg(m_pCurrentTrack->getTitle()).toLatin1());
m_cueFile.write(QString(" PERFORMER \"%1\"\n")
.arg(m_pCurrentTrack->getArtist()).toLatin1());
// Woefully inaccurate (at the seconds level anyways).
// We'd need a signal fired state tracker
// for the track detection code.
m_cueFile.write(QString(" INDEX 01 %1:%2\n")
.arg(getRecordedDurationStr())
.arg((double)cueFrame, 2, 'f', 0, '0').toLatin1());
}
// Encoder calls this method to write compressed audio
void EngineRecord::write(unsigned char *header, unsigned char *body,
int headerLen, int bodyLen) {
if (!fileOpen()) {
return;
}
// Relevant for OGG
if (headerLen > 0) {
m_dataStream.writeRawData((const char*) header, headerLen);
}
// Always write body
m_dataStream.writeRawData((const char*) body, bodyLen);
emit(bytesRecorded((headerLen+bodyLen)));
}
bool EngineRecord::fileOpen() {
// Both encoder and file must be initialized.
if (m_encoding == ENCODING_WAVE || m_encoding == ENCODING_AIFF) {
return (m_pSndfile != NULL);
} else {
return (m_file.handle() != -1);
}
}
bool EngineRecord::openFile() {
// Unfortunately, we cannot use QFile for writing WAV and AIFF audio.
if (m_encoding == ENCODING_WAVE || m_encoding == ENCODING_AIFF) {
// set sfInfo
m_sfInfo.samplerate = m_sampleRate;
m_sfInfo.channels = 2;
if (m_encoding == ENCODING_WAVE) {
m_sfInfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
} else {
m_sfInfo.format = SF_FORMAT_AIFF | SF_FORMAT_PCM_16;
}
// Creates a new WAVE or AIFF file and writes header information.
#ifdef __WINDOWS__
// Pointer valid until string changed
LPCWSTR lpcwFilename = (LPCWSTR)m_fileName.utf16();
m_pSndfile = sf_wchar_open(lpcwFilename, SFM_WRITE, &m_sfInfo);
#else
m_pSndfile = sf_open(m_fileName.toLocal8Bit().constData(), SFM_WRITE, &m_sfInfo);
#endif
if (m_pSndfile) {
sf_command(m_pSndfile, SFC_SET_NORM_FLOAT, NULL, SF_TRUE);
// Warning! Depending on how libsndfile is compiled autoclip may not work.
// Ensure CPU_CLIPS_NEGATIVE and CPU_CLIPS_POSITIVE is setup properly in the build.
sf_command(m_pSndfile, SFC_SET_CLIPPING, NULL, SF_TRUE) ;
// Set meta data
int ret = sf_set_string(m_pSndfile, SF_STR_TITLE, m_baTitle.constData());
if (ret != 0) {
qWarning("libsndfile error: %s", sf_error_number(ret));
}
ret = sf_set_string(m_pSndfile, SF_STR_ARTIST, m_baAuthor.constData());
if (ret != 0) {
qWarning("libsndfile error: %s", sf_error_number(ret));
}
ret = sf_set_string(m_pSndfile, SF_STR_COMMENT, m_baAlbum.constData());
if (ret != 0) {
qWarning("libsndfile error: %s", sf_error_number(ret));
}
}
} else {
// We can use a QFile to write compressed audio.
if (m_pEncoder) {
m_file.setFileName(m_fileName);
if (!m_file.open(QIODevice::WriteOnly)) {
return false;
}
if (m_file.handle() != -1) {
m_dataStream.setDevice(&m_file);
}
} else {
return false;
}
}
// Return whether the file is really open.
return fileOpen();
}
bool EngineRecord::openCueFile() {
if (m_cueFileName.length() <= 0) {
return false;
}
qDebug() << "Opening Cue File:" << m_cueFileName;
m_cueFile.setFileName(m_cueFileName);
// TODO(rryan): maybe we need to use the sandbox to get read/write rights on Mac OS ?!
if (!m_cueFile.open(QIODevice::WriteOnly)) {
qDebug() << "Could not write Cue File:" << m_cueFileName;
return false;
}
if (m_baAuthor.length() > 0) {
m_cueFile.write(QString("PERFORMER \"%1\"\n")
.arg(QString(m_baAuthor).replace(QString("\""), QString("\\\"")))
.toLatin1());
}
if (m_baTitle.length() > 0) {
m_cueFile.write(QString("TITLE \"%1\"\n")
.arg(QString(m_baTitle).replace(QString("\""), QString("\\\"")))
.toLatin1());
}
m_cueFile.write(QString("FILE \"%1\" %2%3\n").arg(
QFileInfo(m_fileName).fileName() //strip path
.replace(QString("\""), QString("\\\"")), // escape doublequote
QString(m_encoding).toUpper(),
m_encoding == ENCODING_WAVE ? "E" : " ").toLatin1());
return true;
}
void EngineRecord::closeFile() {
if (m_encoding == ENCODING_WAVE || m_encoding == ENCODING_AIFF) {
if (m_pSndfile != NULL) {
sf_close(m_pSndfile);
m_pSndfile = NULL;
}
} else if (m_file.handle() != -1) {
// Close QFile and encoder, if open.
if (m_pEncoder) {
m_pEncoder->flush();
delete m_pEncoder;
m_pEncoder = NULL;
}
m_file.close();
}
}
void EngineRecord::closeCueFile() {
if (m_cueFile.handle() != -1) {
m_cueFile.close();
}
}