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| -rw-r--r-- | src/cachemanager.cc | 28 | ||||
| -rw-r--r-- | src/cachemanager.h | 84 |
2 files changed, 112 insertions, 0 deletions
diff --git a/src/cachemanager.cc b/src/cachemanager.cc new file mode 100644 index 0000000..2e9eab9 --- /dev/null +++ b/src/cachemanager.cc @@ -0,0 +1,28 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * cachemanager.cc + * + * Fri Apr 10 10:39:24 CEST 2015 + * Copyright 2015 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo 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. + * + * DrumGizmo 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 DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "cachemanager.h" + diff --git a/src/cachemanager.h b/src/cachemanager.h new file mode 100644 index 0000000..ed89d12 --- /dev/null +++ b/src/cachemanager.h @@ -0,0 +1,84 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * cachemanager.h + * + * Fri Apr 10 10:39:24 CEST 2015 + * Copyright 2015 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo 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. + * + * DrumGizmo 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 DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#ifndef __DRUMGIZMO_CACHEMANAGER_H__ +#define __DRUMGIZMO_CACHEMANAGER_H__ + +#include <string> +#include <list> + +class AudioFile; + +class CacheManager { +public: + + class Request { + public: + std::string filename; + std::map<unsigned int, void*> targets; + size_t pos; + }; + + // Pre: preloaded contains 2 x framesize. chunk size is framesize. + // allocate 2 chunks and copy initial_samples_needed to first buffer from + // preloaded data and enough to fill up the second buffer from preloaded + // returns the first buffer and its size in &size. + // get id from "free stack" and store pointers to buffers in id vector. + // event: open sndfile handle (if not already open) and increase refcount + sample_t *hello(AudioFile *file, int initial_samples_needed, int channel, id_t &new_id); + + // Return which ever buffer is the front, swap them and add event to load the + // next chunk. + sample_t *getNextBuffer(id_t id, size_t &size); + + // decrement file handle refcounter and close file if it is 0. + // free the 2 buffers + // (do not erase from the id vector), push index to + // "free stack" for reuse. + void goodbye(id_t id); + + // id vector: + // { + // AudioFile* + // channel + // buffer1, buffer2 + // position + // (ready?) + // } + +private: + class File { + public: + sndfile_t *handle; + int refcounter; + }; + + std::list<Request> requests; + std::map<AudioFile *, File> + +}; + +#endif/*__DRUMGIZMO_CACHEMANAGER_H__*/ |