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- /* libOggFLAC++ - Free Lossless Audio Codec + Ogg library
- * Copyright (C) 2002,2003 Josh Coalson
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
- #ifndef OggFLACPP__DECODER_H
- #define OggFLACPP__DECODER_H
-
- #include "export.h"
-
- #include "OggFLAC/stream_decoder.h"
- // we only need this for the state abstraction really...
- #include "FLAC++/decoder.h"
-
-
- /** \file include/OggFLAC++/decoder.h
- *
- * \brief
- * This module contains the classes which implement the various
- * decoders.
- *
- * See the detailed documentation in the
- * \link oggflacpp_decoder decoder \endlink module.
- */
-
- /** \defgroup oggflacpp_decoder OggFLAC++/decoder.h: decoder classes
- * \ingroup oggflacpp
- *
- * \brief
- * This module describes the decoder layers provided by libOggFLAC++.
- *
- * The libOggFLAC++ decoder classes are object wrappers around their
- * counterparts in libOggFLAC. Only the stream decoding layer in
- * libOggFLAC provided here. The interface is very similar;
- * make sure to read the \link oggflac_decoder libOggFLAC decoder module \endlink.
- *
- * The only real difference here is that instead of passing in C function
- * pointers for callbacks, you inherit from the decoder class and provide
- * implementations for the callbacks in the derived class; because of this
- * there is no need for a 'client_data' property.
- */
-
- namespace OggFLAC {
- namespace Decoder {
-
- // ============================================================
- //
- // Equivalent: OggFLAC__StreamDecoder
- //
- // ============================================================
-
- /** \defgroup oggflacpp_stream_decoder OggFLAC++/decoder.h: stream decoder class
- * \ingroup oggflacpp_decoder
- *
- * \brief
- * This class wraps the ::OggFLAC__StreamDecoder.
- *
- * See the \link oggflac_stream_decoder libOggFLAC stream decoder module \endlink.
- *
- * \{
- */
-
- /** This class wraps the ::OggFLAC__StreamDecoder.
- */
- class OggFLACPP_API Stream {
- public:
- class OggFLACPP_API State {
- public:
- inline State(::OggFLAC__StreamDecoderState state): state_(state) { }
- inline operator ::OggFLAC__StreamDecoderState() const { return state_; }
- inline const char *as_cstring() const { return ::OggFLAC__StreamDecoderStateString[state_]; }
- protected:
- ::OggFLAC__StreamDecoderState state_;
- };
-
- Stream();
- virtual ~Stream();
-
- bool is_valid() const;
- inline operator bool() const { return is_valid(); }
-
- bool set_serial_number(long value);
- bool set_metadata_respond(::FLAC__MetadataType type);
- bool set_metadata_respond_application(const FLAC__byte id[4]);
- bool set_metadata_respond_all();
- bool set_metadata_ignore(::FLAC__MetadataType type);
- bool set_metadata_ignore_application(const FLAC__byte id[4]);
- bool set_metadata_ignore_all();
-
- State get_state() const;
- FLAC::Decoder::Stream::State get_FLAC_stream_decoder_state() const;
- unsigned get_channels() const;
- ::FLAC__ChannelAssignment get_channel_assignment() const;
- unsigned get_bits_per_sample() const;
- unsigned get_sample_rate() const;
- unsigned get_blocksize() const;
-
- State init();
-
- void finish();
-
- bool flush();
- bool reset();
-
- bool process_single();
- bool process_until_end_of_metadata();
- bool process_until_end_of_stream();
- protected:
- virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], unsigned *bytes) = 0;
- virtual ::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]) = 0;
- virtual void metadata_callback(const ::FLAC__StreamMetadata *metadata) = 0;
- virtual void error_callback(::FLAC__StreamDecoderErrorStatus status) = 0;
-
- ::OggFLAC__StreamDecoder *decoder_;
- private:
- static ::FLAC__StreamDecoderReadStatus read_callback_(const ::OggFLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
- static ::FLAC__StreamDecoderWriteStatus write_callback_(const ::OggFLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
- static void metadata_callback_(const ::OggFLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data);
- static void error_callback_(const ::OggFLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data);
-
- // Private and undefined so you can't use them:
- Stream(const Stream &);
- void operator=(const Stream &);
- };
-
- /* \} */
-
- };
- };
-
- #endif
-