/*

    File:       QuickTimeAudioUtils.h

    Abstract:   Demonstrates how to use QuickTime APIs to get

                and manipulate track and movie audio properties.

    Version:    1.1

                Originally introduced at WWDC 2005 at Session 201:

                "Harnessing the Audio Capabilities of QuickTime 7" 

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*/

#include <AudioToolbox/AudioToolbox.h>

#include <Carbon/Carbon.h>

#include <QuickTime/QuickTime.h>

#ifndef fieldOffset

    #define fieldOffset(type, field) ((size_t) &((type *) 0)->field)

#endif

typedef struct {

    Track theTrackToAttachInsertTo;

    QTAudioContextInsertRegistryInfo *theInsertRegistryInfo;

} InsertRegistryInfo;

#ifdef __cplusplus

extern "C" {

#endif

extern OSStatus expandChannelLayout(AudioChannelLayout** ioLayout, UInt32* ioLayoutSize);

extern OSStatus getLayoutForTag(AudioChannelLayoutTag tag, UInt32* outLayoutSize, AudioChannelLayout** outLayout);

extern OSStatus getTagForLayout(AudioChannelLayout *inLayout, UInt32 inLayoutSize, AudioChannelLayoutTag *outLayoutTag);

extern OSStatus getTrackASBD(Track track, AudioStreamBasicDescription *outASBD);

extern OSStatus getTrackLayoutAndSize(Track track,  UInt32* outLayoutSize, AudioChannelLayout** outLayout);

extern OSStatus getDefaultExtractionLayout(Movie movie, UInt32* outLayoutSize, AudioChannelLayout** outLayout, AudioStreamBasicDescription *asbd);

extern OSStatus getDiscreteExtractionLayout(Movie movie, UInt32* outLayoutSize, AudioChannelLayout** outLayout);

extern OSStatus setTrackLayout(Track track,  UInt32 inLayoutSize, AudioChannelLayout* inLayout);

extern Boolean trackMixesToAudioContext(Track track);

extern OSStatus getNumMovieAudioChannels(Movie movie, UInt32* numAudioChannels);

extern OSStatus getMovieSummaryLayout(Movie movie, UInt32* outLayoutSize, AudioChannelLayout** outLayout);

extern OSStatus getMovieSummaryASBD(Movie movie, AudioStreamBasicDescription* outASBD);

extern OSStatus getDeviceLayout(Movie movie, UInt32* outLayoutSize, AudioChannelLayout** outLayout);

extern OSStatus getMovieSummaryLayoutAndASBD(Movie movie, UInt32* outLayoutSize, AudioChannelLayout** outLayout, AudioStreamBasicDescription* outASBD);

extern OSStatus getDeviceLayoutAndASBD(Movie movie, UInt32* outLayoutSize, AudioChannelLayout** outLayout, AudioStreamBasicDescription* outASBD);

extern OSStatus getDeviceNumberOfChannels(Movie movie, UInt32* outNumChannels);

extern OSStatus prepareMovieForExtraction(Movie movie, 

                                            InsertRegistryInfo info,

                                            MovieAudioExtractionRef* extractionRefPtr, 

                                            Boolean discrete, 

                                            AudioStreamBasicDescription asbd, 

                                            AudioChannelLayout** layout, 

                                            UInt32* layoutSize, 

                                            TimeRecord startTime,

                                            TimeValue64* remainingDuration);

extern OSStatus extractSliceAndScheduleToPlay(MovieAudioExtractionRef extraction, 

                                            AudioStreamBasicDescription asbd, 

                                            AudioUnit playerUnit,   

                                            ScheduledAudioSlice* slice, 

                                            SInt64 *ioNumSamples,

                                            Boolean *extractionComplete);

extern OSStatus extractAudioToFile(MovieAudioExtractionRef extraction, 

                                            AudioFileID outFileID,

                                            AudioStreamBasicDescription asbd, 

                                            SInt64 *ioNumSamples, 

                                            SInt64* ploc, 

                                            Boolean *complete);

#ifdef __cplusplus

}

#endif