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