77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
/*
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* Copyright 2002, Marcus Overhagen. All rights reserved.
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* Copyright 2009, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _BUFFER_MANAGER_H
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#define _BUFFER_MANAGER_H
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#include <set>
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#include <Locker.h>
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#include <MediaDefs.h>
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#include <HashMap.h>
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namespace BPrivate {
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class SharedBufferList;
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}
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class BufferManager {
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public:
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BufferManager();
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~BufferManager();
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area_id SharedBufferListArea();
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status_t RegisterBuffer(team_id team,
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media_buffer_id bufferID, size_t* _size,
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int32* _flags, size_t* _offset, area_id* _area);
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status_t RegisterBuffer(team_id team, size_t size,
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int32 flags, size_t offset, area_id area,
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media_buffer_id* _bufferID);
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status_t UnregisterBuffer(team_id team,
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media_buffer_id bufferID);
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void CleanupTeam(team_id team);
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void Dump();
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private:
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area_id _CloneArea(area_id area);
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void _ReleaseClonedArea(area_id clone);
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private:
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struct clone_info {
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area_id clone;
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vint32 ref_count;
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};
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struct buffer_info {
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media_buffer_id id;
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area_id area;
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size_t offset;
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size_t size;
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int32 flags;
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std::set<team_id> teams;
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};
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typedef HashMap<HashKey32<media_buffer_id>, buffer_info> BufferInfoMap;
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typedef HashMap<HashKey32<area_id>, clone_info> CloneInfoMap;
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typedef HashMap<HashKey32<area_id>, area_id> SourceInfoMap;
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BPrivate::SharedBufferList* fSharedBufferList;
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area_id fSharedBufferListArea;
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media_buffer_id fNextBufferID;
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BLocker fLocker;
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BufferInfoMap fBufferInfoMap;
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CloneInfoMap fCloneInfoMap;
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SourceInfoMap fSourceInfoMap;
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};
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#endif // _BUFFER_MANAGER_H
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