// private void CdDecoder::deinit() { setCDSpeed(-1); QMutexLocker lock(&getCdioMutex()); if (m_paranoia) cdio_paranoia_free(m_paranoia), m_paranoia = 0; if (m_device) cdio_cddap_close(m_device), m_device = 0, m_cdio = 0; if (m_cdio) cdio_destroy(m_cdio), m_cdio = 0; if (m_output_buf) ::av_free(m_output_buf), m_output_buf = NULL; m_inited = m_user_stop = m_finish = false; m_freq = m_bitrate = 0L; m_stat = DecoderEvent::Finished; m_chan = 0; setOutput(0); }
// pure virtual bool CdDecoder::initialize() { if (m_inited) return true; m_inited = m_user_stop = m_finish = false; m_freq = m_bitrate = 0L; m_stat = DecoderEvent::Error; m_chan = 0; m_seekTime = -1.; if (output()) output()->PauseUntilBuffered(); QFile* file = dynamic_cast< QFile* >(input()); // From QIODevice* if (file) { setFilename(file->fileName()); m_tracknum = getFilename().section('.', 0, 0).toUInt(); } QMutexLocker lock(&getCdioMutex()); m_cdio = openCdio(m_devicename); if (!m_cdio) return false; m_start = cdio_get_track_lsn(m_cdio, m_tracknum); m_end = cdio_get_track_last_lsn(m_cdio, m_tracknum); if (CDIO_INVALID_LSN == m_start || CDIO_INVALID_LSN == m_end) { LOG(VB_MEDIA, LOG_INFO, "CdDecoder: No tracks on " + m_devicename); cdio_destroy(m_cdio), m_cdio = 0; return false; } LOG(VB_MEDIA, LOG_DEBUG, QString("CdDecoder track=%1 lsn start=%2 end=%3") .arg(m_tracknum).arg(m_start).arg(m_end)); m_curpos = m_start; m_device = cdio_cddap_identify_cdio(m_cdio, 0, NULL); if (NULL == m_device) { LOG(VB_GENERAL, LOG_ERR, QString("Error: CdDecoder: cdio_cddap_identify(%1) failed") .arg(m_devicename)); cdio_destroy(m_cdio), m_cdio = 0; return false; } cdio_cddap_verbose_set(m_device, VERBOSE_LEVEL_CHECK(VB_MEDIA, LOG_ANY) ? CDDA_MESSAGE_PRINTIT : CDDA_MESSAGE_FORGETIT, VERBOSE_LEVEL_CHECK(VB_MEDIA, LOG_DEBUG) ? CDDA_MESSAGE_PRINTIT : CDDA_MESSAGE_FORGETIT); if (DRIVER_OP_SUCCESS == cdio_cddap_open(m_device)) { // cdio_get_track_last_lsn is unreliable on discs with data at end lsn_t end2 = cdio_cddap_track_lastsector(m_device, m_tracknum); if (end2 < m_end) { LOG(VB_MEDIA, LOG_INFO, QString("CdDecoder: trim last lsn from %1 to %2") .arg(m_end).arg(end2)); m_end = end2; } m_paranoia = cdio_paranoia_init(m_device); if (NULL != m_paranoia) { cdio_paranoia_modeset(m_paranoia, PARANOIA_MODE_DISABLE); (void)cdio_paranoia_seek(m_paranoia, m_start, SEEK_SET); } else { LOG(VB_GENERAL, LOG_ERR, "Warn: CD reading with paranoia is disabled"); } } else { LOG(VB_GENERAL, LOG_ERR, QString("Warn: drive '%1' is not cdda capable"). arg(m_devicename)); } int chnls = cdio_get_track_channels(m_cdio, m_tracknum); m_chan = chnls > 0 ? chnls : 2; m_freq = kSamplesPerSec; if (output()) { const AudioSettings settings(FORMAT_S16, m_chan, CODEC_ID_PCM_S16LE, m_freq, false /* AC3/DTS passthru */); output()->Reconfigure(settings); output()->SetSourceBitrate(m_freq * m_chan * 16); } // 20ms worth m_bks = (m_freq * m_chan * 2) / 50; m_bksFrames = m_freq / 50; // decode 8 bks worth of samples each time we need more m_decodeBytes = m_bks << 3; m_output_buf = reinterpret_cast< char* >( ::av_malloc(m_decodeBytes + CDIO_CD_FRAMESIZE_RAW * 2)); m_output_at = 0; setCDSpeed(2); m_inited = true; return m_inited; }