#ifndef NW4R_SND_CHANNEL_MANAGER_H
#define NW4R_SND_CHANNEL_MANAGER_H
#include "nw4r/snd/snd_Channel.h"
#include "nw4r/snd/snd_InstancePool.h"
#include "nw4r/types_nw4r.h"


namespace nw4r {
namespace snd {
namespace detail {

class ChannelManager {
    friend class Channel; // Alloc/Free intended through Channel only

public:
    static const int VOICE_MARGIN = 1;
    static const int VOICE_MAX = AX_VOICE_MAX + VOICE_MARGIN;
    static const int WORK_SIZE_MAX = VOICE_MAX * sizeof(Channel);

public:
    static ChannelManager &GetInstance();

    u32 GetRequiredMemSize();

    void Setup(void *pWork, u32 workSize);
    void Shutdown();
    void UpdateAllChannel();

private:
    ChannelManager();

    Channel *Alloc();
    void Free(Channel *pChannel);

private:
    InstancePool<Channel> mPool; // at 0x0
    ChannelList mChannelList;    // at 0x4
    bool mInitialized;           // at 0x10
    u32 mChannelCount;           // at 0x14
    void *mMem;                  // at 0x18
    u32 mMemSize;                // at 0x1C
};

} // namespace detail
} // namespace snd
} // namespace nw4r

#endif