353 lines
14 KiB
C++
353 lines
14 KiB
C++
/* libFLAC++ - Free Lossless Audio Codec library
|
|
* Copyright (C) 2002,2003,2004,2005 Josh Coalson
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* - Neither the name of the Xiph.org Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#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_]; }
|
|
inline const char *resolved_as_cstring(const Stream &decoder) const { return ::FLAC__stream_decoder_get_resolved_state_string(decoder.decoder_); }
|
|
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();
|
|
bool skip_single_frame();
|
|
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;
|
|
|
|
#if (defined _MSC_VER) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
|
|
// lame hack: some MSVC/GCC versions can't see a protected decoder_ from nested State::resolved_as_cstring()
|
|
friend State;
|
|
#endif
|
|
::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_]; }
|
|
inline const char *resolved_as_cstring(const SeekableStream &decoder) const { return ::FLAC__seekable_stream_decoder_get_resolved_state_string(decoder.decoder_); }
|
|
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 skip_single_frame();
|
|
|
|
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;
|
|
|
|
#if (defined _MSC_VER) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
|
|
// lame hack: some MSVC/GCC versions can't see a protected decoder_ from nested State::resolved_as_cstring()
|
|
friend State;
|
|
#endif
|
|
::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_]; }
|
|
inline const char *resolved_as_cstring(const File &decoder) const { return ::FLAC__file_decoder_get_resolved_state_string(decoder.decoder_); }
|
|
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 skip_single_frame();
|
|
|
|
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;
|
|
|
|
#if (defined _MSC_VER) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
|
|
// lame hack: some MSVC/GCC versions can't see a protected decoder_ from nested State::resolved_as_cstring()
|
|
friend State;
|
|
#endif
|
|
::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
|