winamp/Src/replicant/player/ifc_playback.h

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2024-09-24 12:54:57 +00:00
#pragma once
#include "foundation/dispatch.h"
#include "foundation/error.h"
#include "types.h"
#include "svc_output.h"
#include "ifc_playback_parameters.h"
/* Note that since a typical ifc_playback implementation
is running on another thread, most functions will always succeed (except for out of memory or thread creation problems)
but might report an error later to the ifc_player object that was passed
when creating the playback object */
class NOVTABLE ifc_playback : public Wasabi2::Dispatchable
{
protected:
ifc_playback() : Dispatchable(NUM_DISPATCH_CODES) {}
~ifc_playback() {}
public:
/* optionally call Cue before calling Play to set the start and end positions
in a cuesheet situation, these will might also get called after
you indicate that cue end position has been reached */
int Cue(Agave_PositionType position_type, Agave_Position start, Agave_Position end) { return Playback_Cue(position_type, start, end); }
// start only version of Cue
int CueStart(Agave_PositionType position_type, Agave_Position start) { return Playback_CueStart(position_type, start); }
// begins playback.
int Play(svc_output *output, ifc_playback_parameters *secondary_parameters) { return Playback_Play(output, secondary_parameters); }
int SeekSeconds(double seconds) { return Playback_SeekSeconds(seconds); }
// called on user-initiated stop. not called if the playback object indiciated a stop (e.g. EOF)
int Stop() { return Playback_Stop(); }
int Pause() { return Playback_Pause(); }
int Unpause() { return Playback_Unpause(); }
/* called to shut things down.
note that if your playback object is in a 'stopped' state,
it should be prepared to receive Cue/Play call until Close() is called */
int Close() { return Playback_Close(); }
/* most of the time, you'll pass SetVolume and SetPan on to the output object
but some special-use playback objects (e.g. analog CD playback) might have to implement this */
// 0 to 1.0
int SetVolume(float volume) { return Playback_SetVolume(volume); }
// -1.0 to 1.0
int SetPan(float pan) { return Playback_SetPan(pan); }
/* most of the time, you'll ignore SetEQ
but some special-use playback objects (e.g. analog CD playback) might have to implement this */
int SetEQ(float preamp, int num_bands, float *bands) { return Playback_SetEQ(preamp, num_bands, bands); }
enum
{
NUM_DISPATCH_CODES,
};
protected:
virtual int WASABICALL Playback_Cue(Agave_PositionType position_type, Agave_Position start, Agave_Position end) { return NErr_NotImplemented; }
virtual int WASABICALL Playback_CueStart(Agave_PositionType position_type, Agave_Position start) { return NErr_NotImplemented; }
virtual int WASABICALL Playback_Play(svc_output *output, ifc_playback_parameters *secondary_parameters)=0;
virtual int WASABICALL Playback_SeekSeconds(double seconds)=0;
virtual int WASABICALL Playback_Stop()=0;
virtual int WASABICALL Playback_Pause()=0;
virtual int WASABICALL Playback_Unpause()=0;
virtual int WASABICALL Playback_Close()=0;
virtual int WASABICALL Playback_SetVolume(float volume) { return NErr_NotImplemented; }
virtual int WASABICALL Playback_SetPan(float pan) { return NErr_NotImplemented; }
virtual int WASABICALL Playback_SetEQ(float preamp, int num_bands, float *bands) { return NErr_NotImplemented; }
};