FLAC 1.4.2 Free Lossless Audio Codec

decoder.h
Go to the documentation of this file.
1/* libFLAC++ - Free Lossless Audio Codec library
2 * Copyright (C) 2002-2009 Josh Coalson
3 * Copyright (C) 2011-2022 Xiph.Org Foundation
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * - Neither the name of the Xiph.org Foundation nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef FLACPP__DECODER_H
34#define FLACPP__DECODER_H
35
36#include "export.h"
37
38#include <string>
39#include "FLAC/stream_decoder.h"
40
41
78 namespace FLAC {
79 namespace Decoder {
80
100 class FLACPP_API Stream {
101 public:
104 class FLACPP_API State {
105 public:
106 inline State(::FLAC__StreamDecoderState state): state_(state) { }
107 inline operator ::FLAC__StreamDecoderState() const { return state_; }
108 inline const char *as_cstring() const { return ::FLAC__StreamDecoderStateString[state_]; }
109 inline const char *resolved_as_cstring(const Stream &decoder) const { return ::FLAC__stream_decoder_get_resolved_state_string(decoder.decoder_); }
110 protected:
111 ::FLAC__StreamDecoderState state_;
112 };
113
114 Stream();
115 virtual ~Stream();
116
118
121 virtual bool is_valid() const;
122 inline operator bool() const { return is_valid(); }
124
125 virtual bool set_ogg_serial_number(long value);
126 virtual bool set_md5_checking(bool value);
127 virtual bool set_metadata_respond(::FLAC__MetadataType type);
128 virtual bool set_metadata_respond_application(const FLAC__byte id[4]);
129 virtual bool set_metadata_respond_all();
130 virtual bool set_metadata_ignore(::FLAC__MetadataType type);
131 virtual bool set_metadata_ignore_application(const FLAC__byte id[4]);
132 virtual bool set_metadata_ignore_all();
133
134 /* get_state() is not virtual since we want subclasses to be able to return their own state */
135 State get_state() const;
136 virtual bool get_md5_checking() const;
137 virtual FLAC__uint64 get_total_samples() const;
138 virtual uint32_t get_channels() const;
139 virtual ::FLAC__ChannelAssignment get_channel_assignment() const;
140 virtual uint32_t get_bits_per_sample() const;
141 virtual uint32_t get_sample_rate() const;
142 virtual uint32_t get_blocksize() const;
143 virtual bool get_decode_position(FLAC__uint64 *position) const;
144
145 virtual ::FLAC__StreamDecoderInitStatus init();
146 virtual ::FLAC__StreamDecoderInitStatus init_ogg();
147
148 virtual bool finish();
149
150 virtual bool flush();
151 virtual bool reset();
152
153 virtual bool process_single();
154 virtual bool process_until_end_of_metadata();
155 virtual bool process_until_end_of_stream();
156 virtual bool skip_single_frame();
157
158 virtual bool seek_absolute(FLAC__uint64 sample);
159 protected:
161 virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes) = 0;
162
164 virtual ::FLAC__StreamDecoderSeekStatus seek_callback(FLAC__uint64 absolute_byte_offset);
165
167 virtual ::FLAC__StreamDecoderTellStatus tell_callback(FLAC__uint64 *absolute_byte_offset);
168
170 virtual ::FLAC__StreamDecoderLengthStatus length_callback(FLAC__uint64 *stream_length);
171
173 virtual bool eof_callback();
174
176 virtual ::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]) = 0;
177
179 virtual void metadata_callback(const ::FLAC__StreamMetadata *metadata);
180
182 virtual void error_callback(::FLAC__StreamDecoderErrorStatus status) = 0;
183
184#if (defined __BORLANDC__) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
185 // lame hack: some compilers can't see a protected decoder_ from nested State::resolved_as_cstring()
186 friend State;
187#endif
188 ::FLAC__StreamDecoder *decoder_;
189
190 static ::FLAC__StreamDecoderReadStatus read_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
191 static ::FLAC__StreamDecoderSeekStatus seek_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
192 static ::FLAC__StreamDecoderTellStatus tell_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
193 static ::FLAC__StreamDecoderLengthStatus length_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
194 static FLAC__bool eof_callback_(const ::FLAC__StreamDecoder *decoder, void *client_data);
195 static ::FLAC__StreamDecoderWriteStatus write_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
196 static void metadata_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data);
197 static void error_callback_(const ::FLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data);
198 private:
199 // Private and undefined so you can't use them:
200 Stream(const Stream &);
201 void operator=(const Stream &);
202 };
203
223 class FLACPP_API File: public Stream {
224 public:
225 File();
226 virtual ~File();
227
228 using Stream::init;
229 virtual ::FLAC__StreamDecoderInitStatus init(FILE *file);
230 virtual ::FLAC__StreamDecoderInitStatus init(const char *filename);
231 virtual ::FLAC__StreamDecoderInitStatus init(const std::string &filename);
232 using Stream::init_ogg;
233 virtual ::FLAC__StreamDecoderInitStatus init_ogg(FILE *file);
234 virtual ::FLAC__StreamDecoderInitStatus init_ogg(const char *filename);
235 virtual ::FLAC__StreamDecoderInitStatus init_ogg(const std::string &filename);
236 protected:
237 // this is a dummy implementation to satisfy the pure virtual in Stream that is actually supplied internally by the C layer
238 virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes);
239 private:
240 // Private and undefined so you can't use them:
241 File(const File &);
242 void operator=(const File &);
243 };
244
245 }
246}
247
248#endif
export.h
This module contains #defines and symbols for exporting function calls, and providing version informa...
FLAC::Decoder::File
This class wraps the FLAC__StreamDecoder. If you are not decoding from a file, you may need to use FL...
Definition: decoder.h:223
FLAC::Decoder::File::init
virtual ::FLAC__StreamDecoderInitStatus init(const std::string &filename)
See FLAC__stream_decoder_init_file()
FLAC::Decoder::File::init_ogg
virtual ::FLAC__StreamDecoderInitStatus init_ogg(const char *filename)
See FLAC__stream_decoder_init_ogg_file()
FLAC::Decoder::File::init
virtual ::FLAC__StreamDecoderInitStatus init(const char *filename)
See FLAC__stream_decoder_init_file()
FLAC::Decoder::File::read_callback
virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes)
see FLAC__StreamDecoderReadCallback
FLAC::Decoder::File::init
virtual ::FLAC__StreamDecoderInitStatus init(FILE *file)
See FLAC__stream_decoder_init_FILE()
FLAC::Decoder::File::init_ogg
virtual ::FLAC__StreamDecoderInitStatus init_ogg(FILE *file)
See FLAC__stream_decoder_init_ogg_FILE()
FLAC::Decoder::File::init_ogg
virtual ::FLAC__StreamDecoderInitStatus init_ogg(const std::string &filename)
See FLAC__stream_decoder_init_ogg_file()
FLAC::Decoder::Stream::State
Definition: decoder.h:104
FLAC::Decoder::Stream
This class wraps the FLAC__StreamDecoder. If you are decoding from a file, FLAC::Decoder::File may be...
Definition: decoder.h:100
FLAC::Decoder::Stream::tell_callback
virtual ::FLAC__StreamDecoderTellStatus tell_callback(FLAC__uint64 *absolute_byte_offset)
see FLAC__StreamDecoderTellCallback
FLAC::Decoder::Stream::finish
virtual bool finish()
See FLAC__stream_decoder_finish()
FLAC::Decoder::Stream::is_valid
virtual bool is_valid() const
FLAC::Decoder::Stream::error_callback
virtual void error_callback(::FLAC__StreamDecoderErrorStatus status)=0
see FLAC__StreamDecoderErrorCallback
FLAC::Decoder::Stream::get_sample_rate
virtual uint32_t get_sample_rate() const
See FLAC__stream_decoder_get_sample_rate()
FLAC::Decoder::Stream::metadata_callback
virtual void metadata_callback(const ::FLAC__StreamMetadata *metadata)
see FLAC__StreamDecoderMetadataCallback
FLAC::Decoder::Stream::set_metadata_respond_all
virtual bool set_metadata_respond_all()
See FLAC__stream_decoder_set_metadata_respond_all()
FLAC::Decoder::Stream::skip_single_frame
virtual bool skip_single_frame()
See FLAC__stream_decoder_skip_single_frame()
FLAC::Decoder::Stream::init
virtual ::FLAC__StreamDecoderInitStatus init()
Seek FLAC__stream_decoder_init_stream()
FLAC::Decoder::Stream::get_decode_position
virtual bool get_decode_position(FLAC__uint64 *position) const
See FLAC__stream_decoder_get_decode_position()
FLAC::Decoder::Stream::get_md5_checking
virtual bool get_md5_checking() const
See FLAC__stream_decoder_get_md5_checking()
FLAC::Decoder::Stream::get_bits_per_sample
virtual uint32_t get_bits_per_sample() const
See FLAC__stream_decoder_get_bits_per_sample()
FLAC::Decoder::Stream::get_channels
virtual uint32_t get_channels() const
See FLAC__stream_decoder_get_channels()
FLAC::Decoder::Stream::length_callback
virtual ::FLAC__StreamDecoderLengthStatus length_callback(FLAC__uint64 *stream_length)
see FLAC__StreamDecoderLengthCallback
FLAC::Decoder::Stream::get_blocksize
virtual uint32_t get_blocksize() const
See FLAC__stream_decoder_get_blocksize()
FLAC::Decoder::Stream::get_channel_assignment
virtual ::FLAC__ChannelAssignment get_channel_assignment() const
See FLAC__stream_decoder_get_channel_assignment()
FLAC::Decoder::Stream::reset
virtual bool reset()
See FLAC__stream_decoder_reset()
FLAC::Decoder::Stream::set_md5_checking
virtual bool set_md5_checking(bool value)
See FLAC__stream_decoder_set_md5_checking()
FLAC::Decoder::Stream::set_metadata_ignore_all
virtual bool set_metadata_ignore_all()
See FLAC__stream_decoder_set_metadata_ignore_all()
FLAC::Decoder::Stream::set_metadata_respond
virtual bool set_metadata_respond(::FLAC__MetadataType type)
See FLAC__stream_decoder_set_metadata_respond()
FLAC::Decoder::Stream::set_metadata_respond_application
virtual bool set_metadata_respond_application(const FLAC__byte id[4])
See FLAC__stream_decoder_set_metadata_respond_application()
FLAC::Decoder::Stream::flush
virtual bool flush()
See FLAC__stream_decoder_flush()
FLAC::Decoder::Stream::set_ogg_serial_number
virtual bool set_ogg_serial_number(long value)
See FLAC__stream_decoder_set_ogg_serial_number()
FLAC::Decoder::Stream::process_until_end_of_metadata
virtual bool process_until_end_of_metadata()
See FLAC__stream_decoder_process_until_end_of_metadata()
FLAC::Decoder::Stream::process_single
virtual bool process_single()
See FLAC__stream_decoder_process_single()
FLAC::Decoder::Stream::get_state
State get_state() const
See FLAC__stream_decoder_get_state()
FLAC::Decoder::Stream::eof_callback
virtual bool eof_callback()
see FLAC__StreamDecoderEofCallback
FLAC::Decoder::Stream::seek_absolute
virtual bool seek_absolute(FLAC__uint64 sample)
See FLAC__stream_decoder_seek_absolute()
FLAC::Decoder::Stream::get_total_samples
virtual FLAC__uint64 get_total_samples() const
See FLAC__stream_decoder_get_total_samples()
FLAC::Decoder::Stream::set_metadata_ignore_application
virtual bool set_metadata_ignore_application(const FLAC__byte id[4])
See FLAC__stream_decoder_set_metadata_ignore_application()
FLAC::Decoder::Stream::init_ogg
virtual ::FLAC__StreamDecoderInitStatus init_ogg()
Seek FLAC__stream_decoder_init_ogg_stream()
FLAC::Decoder::Stream::set_metadata_ignore
virtual bool set_metadata_ignore(::FLAC__MetadataType type)
See FLAC__stream_decoder_set_metadata_ignore()
FLAC::Decoder::Stream::write_callback
virtual ::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 *const buffer[])=0
see FLAC__StreamDecoderWriteCallback
FLAC::Decoder::Stream::seek_callback
virtual ::FLAC__StreamDecoderSeekStatus seek_callback(FLAC__uint64 absolute_byte_offset)
see FLAC__StreamDecoderSeekCallback
FLAC::Decoder::Stream::read_callback
virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes)=0
see FLAC__StreamDecoderReadCallback
FLAC::Decoder::Stream::process_until_end_of_stream
virtual bool process_until_end_of_stream()
See FLAC__stream_decoder_process_until_end_of_stream()
FLAC__StreamMetadata
struct FLAC__StreamMetadata FLAC__StreamMetadata
FLAC__ChannelAssignment
FLAC__ChannelAssignment
Definition: format.h:388
FLAC__MetadataType
FLAC__MetadataType
Definition: format.h:496
FLAC__StreamDecoderErrorStatus
FLAC__StreamDecoderErrorStatus
Definition: stream_decoder.h:431
FLAC__stream_decoder_get_resolved_state_string
const char * FLAC__stream_decoder_get_resolved_state_string(const FLAC__StreamDecoder *decoder)
FLAC__StreamDecoderState
FLAC__StreamDecoderState
Definition: stream_decoder.h:202
FLAC__StreamDecoderWriteStatus
FLAC__StreamDecoderWriteStatus
Definition: stream_decoder.h:394
FLAC__StreamDecoderTellStatus
FLAC__StreamDecoderTellStatus
Definition: stream_decoder.h:348
FLAC__StreamDecoderInitStatus
FLAC__StreamDecoderInitStatus
Definition: stream_decoder.h:256
FLAC__StreamDecoderStateString
const char *const FLAC__StreamDecoderStateString[]
FLAC__StreamDecoderSeekStatus
FLAC__StreamDecoderSeekStatus
Definition: stream_decoder.h:325
FLAC__StreamDecoderLengthStatus
FLAC__StreamDecoderLengthStatus
Definition: stream_decoder.h:371
FLAC__StreamDecoderReadStatus
FLAC__StreamDecoderReadStatus
Definition: stream_decoder.h:294
FLACPP_API
#define FLACPP_API
Definition: export.h:88
stream_decoder.h
This module contains the functions which implement the stream decoder.
FLAC__StreamDecoder
Definition: stream_decoder.h:470

Copyright (c) 2000-2009 Josh Coalson Copyright (c) 2011-2022 Xiph.Org Foundation