winamp/Src/replicant/decode/svc_decode.h
2024-09-24 14:54:57 +02:00

81 lines
3.8 KiB
C++

#pragma once
#include "foundation/dispatch.h"
#include "audio/parameters.h"
#include "audio/ifc_audio_decoder_callback.h"
#include "audio/ifc_audio_decoder_pull.h"
#include "nx/nxuri.h"
/* if you return NErr_TryAgain, you will be called again with pass=1 after all other services get a chance at the file */
// DA3BB978-4A85-409F-B67C-10E3E1CF73CB
static const GUID decode_service_type_guid =
{ 0xDA3BB978, 0x4A85, 0x409F, { 0xB6, 0x7C, 0x10, 0xE3, 0xE1, 0xCF, 0x73, 0xCB } };
class svc_decode : public Wasabi2::Dispatchable
{
protected:
svc_decode() : Dispatchable(DISPATCHABLE_VERSION) {}
~svc_decode() {}
public:
static GUID GetServiceType() { return decode_service_type_guid; }
/*
* return values for the CreateAudioDecoder family of functions
* * NErr_Success: Decoder successfully created
* * NErr_False: File type not supported by this decoder
* * NErr_UnsupportedInterface: File type is supported by this decoder, but not the particular style (callback, pull, packet).
* * Any other code is interpreted as an error and enumeration will stop!
*/
/* Flags are defined in ifc_audio_decoder_callback */
int CreateAudioDecoder_Callback(ifc_audio_decoder_callback **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags) { return DecodeService_CreateAudioDecoder_Callback(decoder, filename, parameters, flags); }
int CreateAudioDecoder_Pull(ifc_audio_decoder_pull **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags) { return DecodeService_CreateAudioDecoder_Pull(decoder, filename, parameters, flags); }
int CreateAudioDecoder_Callback(unsigned int pass, ifc_audio_decoder_callback **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags)
{
if (dispatchable_version == 0)
{
if (pass == 0)
return DecodeService_CreateAudioDecoder_Callback(decoder, filename, parameters, flags);
else
return NErr_False;
}
else
return DecodeService_CreateAudioDecoder_Callback(pass, decoder, filename, parameters, flags);
}
int CreateAudioDecoder_Pull(unsigned int pass, ifc_audio_decoder_pull **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags)
{
if (dispatchable_version == 0)
{
if (pass == 0)
return DecodeService_CreateAudioDecoder_Pull(decoder, filename, parameters, flags);
else
return NErr_False;
}
else
return DecodeService_CreateAudioDecoder_Pull(pass, decoder, filename, parameters, flags);
}
enum
{
/* Additional flags are defined in the specific decoder interface (e.g. ifc_audio_decoder_pull.h)
They should start at 0x80000001 to ensure uniqueness */
FLAG_NO_METADATA= (1 << 0), // tells the decoder that it doesn't need to parse metadata
FLAG_VALIDATION = (1 << 1), // turns on codec/file-format specific extra validation checks. for most implementations this means turning on CRC checking
};
enum
{
DISPATCHABLE_VERSION=1,
};
private:
/* these two no longer have to be implemented */
virtual int WASABICALL DecodeService_CreateAudioDecoder_Callback(ifc_audio_decoder_callback **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags) { return DecodeService_CreateAudioDecoder_Callback(0, decoder, filename, parameters, flags); }
virtual int WASABICALL DecodeService_CreateAudioDecoder_Pull(ifc_audio_decoder_pull **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags) { return DecodeService_CreateAudioDecoder_Pull(0, decoder, filename, parameters, flags); }
virtual int WASABICALL DecodeService_CreateAudioDecoder_Callback(unsigned int pass, ifc_audio_decoder_callback **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags) { return NErr_NotImplemented; }
virtual int WASABICALL DecodeService_CreateAudioDecoder_Pull(unsigned int pass, ifc_audio_decoder_pull **decoder, nx_uri_t filename, nsaudio::Parameters *parameters, int flags) { return NErr_NotImplemented; }
};