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- /* libFLAC++ - Free Lossless Audio Codec 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 FLACPP__DECODER_H
- #define FLACPP__DECODER_H
-
- #include "export.h"
-
- #include "FLAC/file_decoder.h"
- #include "FLAC/seekable_stream_decoder.h"
- #include "FLAC/stream_decoder.h"
-
-
- /** \file include/FLAC++/decoder.h
- *
- * \brief
- * This module contains the classes which implement the various
- * decoders.
- *
- * See the detailed documentation in the
- * \link flacpp_decoder decoder \endlink module.
- */
-
- /** \defgroup flacpp_decoder FLAC++/decoder.h: decoder classes
- * \ingroup flacpp
- *
- * \brief
- * This module describes the three decoder layers provided by libFLAC++.
- *
- * The libFLAC++ decoder classes are object wrappers around their
- * counterparts in libFLAC. All three decoding layers available in
- * libFLAC are also provided here. The interface is very similar;
- * make sure to read the \link flac_decoder libFLAC 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 FLAC {
- namespace Decoder {
-
- // ============================================================
- //
- // Equivalent: FLAC__StreamDecoder
- //
- // ============================================================
-
- /** \defgroup flacpp_stream_decoder FLAC++/decoder.h: stream decoder class
- * \ingroup flacpp_decoder
- *
- * \brief
- * This class wraps the ::FLAC__StreamDecoder.
- *
- * See the \link flac_stream_decoder libFLAC stream decoder module \endlink.
- *
- * \{
- */
-
- /** This class wraps the ::FLAC__StreamDecoder.
- */
- class FLACPP_API Stream {
- public:
- class FLACPP_API State {
- public:
- inline State(::FLAC__StreamDecoderState state): state_(state) { }
- inline operator ::FLAC__StreamDecoderState() const { return state_; }
- inline const char *as_cstring() const { return ::FLAC__StreamDecoderStateString[state_]; }
- const char *resolved_as_cstring(const Stream &) const;
- protected:
- ::FLAC__StreamDecoderState state_;
- };
-
- Stream();
- virtual ~Stream();
-
- bool is_valid() const;
- inline operator bool() const { return is_valid(); }
-
- 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;
- 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;
-
- /** Initialize the instance; as with the C interface,
- * init() should be called after construction and 'set'
- * calls but before any of the 'process' calls.
- */
- 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;
-
- ::FLAC__StreamDecoder *decoder_;
- private:
- static ::FLAC__StreamDecoderReadStatus read_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
- static ::FLAC__StreamDecoderWriteStatus write_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
- static void metadata_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data);
- static void error_callback_(const ::FLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data);
-
- // Private and undefined so you can't use them:
- Stream(const Stream &);
- void operator=(const Stream &);
- };
-
- /* \} */
-
-
- // ============================================================
- //
- // Equivalent: FLAC__SeekableStreamDecoder
- //
- // ============================================================
-
- /** \defgroup flacpp_seekable_stream_decoder FLAC++/decoder.h: seekable stream decoder class
- * \ingroup flacpp_decoder
- *
- * \brief
- * This class wraps the ::FLAC__SeekableStreamDecoder.
- *
- * See the \link flac_seekable_stream_decoder libFLAC seekable stream decoder module \endlink.
- *
- * \{
- */
-
- /** This class wraps the ::FLAC__SeekableStreamDecoder.
- */
- class FLACPP_API SeekableStream {
- public:
- class FLACPP_API State {
- public:
- inline State(::FLAC__SeekableStreamDecoderState state): state_(state) { }
- inline operator ::FLAC__SeekableStreamDecoderState() const { return state_; }
- inline const char *as_cstring() const { return ::FLAC__SeekableStreamDecoderStateString[state_]; }
- const char *resolved_as_cstring(const SeekableStream &) const;
- protected:
- ::FLAC__SeekableStreamDecoderState state_;
- };
-
- SeekableStream();
- virtual ~SeekableStream();
-
- bool is_valid() const;
- inline operator bool() const { return is_valid(); }
-
- bool set_md5_checking(bool 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;
- Stream::State get_stream_decoder_state() const;
- bool get_md5_checking() 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();
-
- bool finish();
-
- bool flush();
- bool reset();
-
- bool process_single();
- bool process_until_end_of_metadata();
- bool process_until_end_of_stream();
-
- bool seek_absolute(FLAC__uint64 sample);
- protected:
- virtual ::FLAC__SeekableStreamDecoderReadStatus read_callback(FLAC__byte buffer[], unsigned *bytes) = 0;
- virtual ::FLAC__SeekableStreamDecoderSeekStatus seek_callback(FLAC__uint64 absolute_byte_offset) = 0;
- virtual ::FLAC__SeekableStreamDecoderTellStatus tell_callback(FLAC__uint64 *absolute_byte_offset) = 0;
- virtual ::FLAC__SeekableStreamDecoderLengthStatus length_callback(FLAC__uint64 *stream_length) = 0;
- virtual bool eof_callback() = 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;
-
- ::FLAC__SeekableStreamDecoder *decoder_;
- private:
- static ::FLAC__SeekableStreamDecoderReadStatus read_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
- static ::FLAC__SeekableStreamDecoderSeekStatus seek_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
- static ::FLAC__SeekableStreamDecoderTellStatus tell_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
- static ::FLAC__SeekableStreamDecoderLengthStatus length_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
- static FLAC__bool eof_callback_(const ::FLAC__SeekableStreamDecoder *decoder, void *client_data);
- static ::FLAC__StreamDecoderWriteStatus write_callback_(const ::FLAC__SeekableStreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
- static void metadata_callback_(const ::FLAC__SeekableStreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data);
- static void error_callback_(const ::FLAC__SeekableStreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data);
-
- // Private and undefined so you can't use them:
- SeekableStream(const SeekableStream &);
- void operator=(const SeekableStream &);
- };
-
- /* \} */
-
-
- // ============================================================
- //
- // Equivalent: FLAC__FileDecoder
- //
- // ============================================================
-
- /** \defgroup flacpp_file_decoder FLAC++/decoder.h: file decoder class
- * \ingroup flacpp_decoder
- *
- * \brief
- * This class wraps the ::FLAC__FileDecoder.
- *
- * See the \link flac_file_decoder libFLAC file decoder module \endlink.
- *
- * \{
- */
-
- /** This class wraps the ::FLAC__FileDecoder.
- */
- class FLACPP_API File {
- public:
- class FLACPP_API State {
- public:
- inline State(::FLAC__FileDecoderState state): state_(state) { }
- inline operator ::FLAC__FileDecoderState() const { return state_; }
- inline const char *as_cstring() const { return ::FLAC__FileDecoderStateString[state_]; }
- const char *resolved_as_cstring(const File &) const;
- protected:
- ::FLAC__FileDecoderState state_;
- };
-
- File();
- virtual ~File();
-
- bool is_valid() const;
- inline operator bool() const { return is_valid(); }
-
- bool set_md5_checking(bool value);
- bool set_filename(const char *value); //!< 'value' may not be \c NULL; use "-" for stdin
- 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;
- SeekableStream::State get_seekable_stream_decoder_state() const;
- Stream::State get_stream_decoder_state() const;
- bool get_md5_checking() 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();
-
- bool finish();
-
- bool process_single();
- bool process_until_end_of_metadata();
- bool process_until_end_of_file();
-
- bool seek_absolute(FLAC__uint64 sample);
- protected:
- 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;
-
- ::FLAC__FileDecoder *decoder_;
- private:
- static ::FLAC__StreamDecoderWriteStatus write_callback_(const ::FLAC__FileDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
- static void metadata_callback_(const ::FLAC__FileDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data);
- static void error_callback_(const ::FLAC__FileDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data);
-
- // Private and undefined so you can't use them:
- File(const File &);
- void operator=(const File &);
- };
-
- /* \} */
-
- };
- };
-
- #endif
-