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Diffstat (limited to 'muse_qt4_evolution/muse/audioprefetch.h')
-rw-r--r-- | muse_qt4_evolution/muse/audioprefetch.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/muse_qt4_evolution/muse/audioprefetch.h b/muse_qt4_evolution/muse/audioprefetch.h new file mode 100644 index 00000000..14e8096c --- /dev/null +++ b/muse_qt4_evolution/muse/audioprefetch.h @@ -0,0 +1,54 @@ +//============================================================================= +// MusE +// Linux Music Editor +// $Id:$ +// +// Copyright (C) 2002-2006 by Werner Schweer and others +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2. +// +// 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., 675 Mass Ave, Cambridge, MA 02139, USA. +//============================================================================= + +#ifndef __AUDIOPREFETCH_H__ +#define __AUDIOPREFETCH_H__ + +#include "thread.h" +#include "fifo.h" + +//--------------------------------------------------------- +// AudioPrefetch +//--------------------------------------------------------- + +class AudioPrefetch : public Thread { + Fifo1 fifo; + unsigned writePos; + unsigned seekPos; // remember last seek to optimize seeks + + virtual void processMsg1(const void*); + void prefetch(bool seekFlag); + void seek(unsigned pos); + volatile int seekCount; + + public: + AudioPrefetch(const char* name); + ~AudioPrefetch(); + virtual void start(int); + + void msgTick(); + void msgSeek(unsigned pos); + bool seekDone() const { return seekCount == 0; } + Fifo1* getFifo() { return &fifo; } + }; + +extern AudioPrefetch* audioPrefetch; + +#endif |