haiku/headers/os/media/BufferGroup.h
Axel Dörfler 9dec231042 Sorry for this large commit in advance; it's not really possible to divide this
into smaller parts:

media_addon_server:
* Removed (broken) use of (broken and inefficient) home-brewn Map, and List
  classes. This also fixes a crash on shutdown when used with the malloc_debug
  implementation. It's using stl::vector, and stl::map now instead.

_shared_buffer_list:
* Renamed _shared_buffer_list to SharedBufferList, and put it into the BPrivate
  namespace. Also, made a class out of it.
* Separated shared buffer list creation from cloning.
* Enlarged maximum number of buffers to something that is not that evil, but
  actually uses the space it has (ie. is a useful multiple of
  shared_buffer_info that fills a multiple of B_PAGE_SIZE as much as possible).
* No longer drops into the debugger if the
* The list that is currently used is very inefficient for the features it
  provides though (no change there).

_buffer_id_cache:
* Renamed to BufferCache, and put it into the private namespace
* It now deletes its buffers on deletion; since the BBufferConsumer will be
  gone, too, at this point, there is little chance that there are still buffers
  in use.
* Also, it's now using std::map instead of the (see above) Map class.

BBuffer:
* Got rid of the fBufferID member.

Misc.:
* Got rid of the global "team" variable; the media kit is now using the
  private app kit's current_team() now.
* Added a lot of missing error checks (mostly memory allocations).
* Renamed fields like "flavorid" to flavor_id, renamed "dfi_*" fields to
  something more detailed.
* Moved ServerInterface.h from src/servers/media/ to headers/private/media.
* Notifications.h was not self contained.
* Added missing licenses.
* Lots of cleanups, and coding style fixes.

What this doesn't fix:
* Bug #4954 which started all this (this comes next, though)
* Deinitialization is broken, as the PortPool is uninitialized too early, and
  still used afterwards.
* The strange add-on monitoring code in the media_addon_server


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34500 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-05 11:11:28 +00:00

71 lines
1.5 KiB
C++

/*
* Copyright 2009, Haiku Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _BUFFER_GROUP_H
#define _BUFFER_GROUP_H
#include <MediaDefs.h>
class BBuffer;
namespace BPrivate {
struct SharedBufferList;
}
class BBufferGroup {
public:
BBufferGroup(size_t size, int32 count = 3,
uint32 placement = B_ANY_ADDRESS,
uint32 lock = B_FULL_LOCK);
explicit BBufferGroup();
BBufferGroup(int32 count,
const media_buffer_id* buffers);
~BBufferGroup();
status_t InitCheck();
status_t AddBuffer(const buffer_clone_info& info,
BBuffer** _buffer = NULL);
BBuffer* RequestBuffer(size_t size,
bigtime_t timeout = B_INFINITE_TIMEOUT);
status_t RequestBuffer(BBuffer* buffer,
bigtime_t timeout = B_INFINITE_TIMEOUT);
status_t RequestError();
status_t CountBuffers(int32* _count);
status_t GetBufferList(int32 bufferCount,
BBuffer** _buffers);
status_t WaitForBuffers();
status_t ReclaimAllBuffers();
private:
// deprecated BeOS R4 API
status_t AddBuffersTo(BMessage* message, const char* name,
bool needLock);
BBufferGroup(const BBufferGroup& other);
BBufferGroup& operator=(const BBufferGroup& other);
status_t _Init();
private:
friend struct BPrivate::SharedBufferList;
status_t fInitError;
status_t fRequestError;
int32 fBufferCount;
BPrivate::SharedBufferList* fBufferList;
sem_id fReclaimSem;
uint32 _reserved[9];
};
#endif // _BUFFER_GROUP_H