72 lines
3.2 KiB
C++
72 lines
3.2 KiB
C++
#pragma once
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#include "foundation/dispatch.h"
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#include "foundation/error.h"
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#include "types.h"
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#include "svc_output.h"
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#include "ifc_playback_parameters.h"
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/* Note that since a typical ifc_playback implementation
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is running on another thread, most functions will always succeed (except for out of memory or thread creation problems)
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but might report an error later to the ifc_player object that was passed
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when creating the playback object */
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class NOVTABLE ifc_playback : public Wasabi2::Dispatchable
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{
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protected:
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ifc_playback() : Dispatchable(NUM_DISPATCH_CODES) {}
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~ifc_playback() {}
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public:
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/* optionally call Cue before calling Play to set the start and end positions
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in a cuesheet situation, these will might also get called after
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you indicate that cue end position has been reached */
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int Cue(Agave_PositionType position_type, Agave_Position start, Agave_Position end) { return Playback_Cue(position_type, start, end); }
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// start only version of Cue
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int CueStart(Agave_PositionType position_type, Agave_Position start) { return Playback_CueStart(position_type, start); }
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// begins playback.
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int Play(svc_output *output, ifc_playback_parameters *secondary_parameters) { return Playback_Play(output, secondary_parameters); }
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int SeekSeconds(double seconds) { return Playback_SeekSeconds(seconds); }
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// called on user-initiated stop. not called if the playback object indiciated a stop (e.g. EOF)
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int Stop() { return Playback_Stop(); }
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int Pause() { return Playback_Pause(); }
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int Unpause() { return Playback_Unpause(); }
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/* called to shut things down.
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note that if your playback object is in a 'stopped' state,
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it should be prepared to receive Cue/Play call until Close() is called */
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int Close() { return Playback_Close(); }
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/* most of the time, you'll pass SetVolume and SetPan on to the output object
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but some special-use playback objects (e.g. analog CD playback) might have to implement this */
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// 0 to 1.0
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int SetVolume(float volume) { return Playback_SetVolume(volume); }
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// -1.0 to 1.0
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int SetPan(float pan) { return Playback_SetPan(pan); }
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/* most of the time, you'll ignore SetEQ
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but some special-use playback objects (e.g. analog CD playback) might have to implement this */
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int SetEQ(float preamp, int num_bands, float *bands) { return Playback_SetEQ(preamp, num_bands, bands); }
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enum
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{
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NUM_DISPATCH_CODES,
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};
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protected:
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virtual int WASABICALL Playback_Cue(Agave_PositionType position_type, Agave_Position start, Agave_Position end) { return NErr_NotImplemented; }
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virtual int WASABICALL Playback_CueStart(Agave_PositionType position_type, Agave_Position start) { return NErr_NotImplemented; }
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virtual int WASABICALL Playback_Play(svc_output *output, ifc_playback_parameters *secondary_parameters)=0;
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virtual int WASABICALL Playback_SeekSeconds(double seconds)=0;
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virtual int WASABICALL Playback_Stop()=0;
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virtual int WASABICALL Playback_Pause()=0;
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virtual int WASABICALL Playback_Unpause()=0;
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virtual int WASABICALL Playback_Close()=0;
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virtual int WASABICALL Playback_SetVolume(float volume) { return NErr_NotImplemented; }
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virtual int WASABICALL Playback_SetPan(float pan) { return NErr_NotImplemented; }
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virtual int WASABICALL Playback_SetEQ(float preamp, int num_bands, float *bands) { return NErr_NotImplemented; }
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};
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