/*
 * Copyright © 2000-2006 Ingo Weinhold <ingo_weinhold@gmx.de>
 * All rights reserved. Distributed under the terms of the MIT licensce.
 */
#ifndef AUDIO_READER_H
#define AUDIO_READER_H

#include <MediaDefs.h>

class AudioReader {
public:
                                                                AudioReader();
                                                                AudioReader(const media_format& format);
        virtual                                         ~AudioReader();

        virtual status_t                        InitCheck() const;

                        void                            SetFormat(const media_format& format);
                        const media_format&     Format() const;

        virtual bigtime_t                       InitialLatency() const = 0;
        virtual status_t                        Read(void* buffer, int64 pos, int64 frames) = 0;

                        void                            SetOutOffset(int64 offset);
                        int64                           OutOffset() const;

                        int64                           FrameForTime(bigtime_t time) const;
                        bigtime_t                       TimeForFrame(int64 frame) const;

protected:
                        void*                           ReadSilence(void* buffer, int64 frames) const;
                        void*                           SkipFrames(void* buffer, int64 frames) const;
                        void                            ReverseFrames(void* buffer,
                                                                        int64 frames) const;

protected:
                        media_format            fFormat;
                        int64                           fOutOffset;
};

#endif  // AUDIO_READER_H