FLAC: include/FLAC++/decoder.h Source File

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decoder.h
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1 /* libFLAC++ - Free Lossless Audio Codec library
2 * Copyright (C) 2002-2009 Josh Coalson
3 * Copyright (C) 2011-2014 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(); }
123
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 unsigned get_channels() const;
139 virtual ::FLAC__ChannelAssignment get_channel_assignment() const;
140 virtual unsigned get_bits_per_sample() const;
141 virtual unsigned get_sample_rate() const;
142 virtual unsigned 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 _MSC_VER) || (defined __BORLANDC__) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
185 // lame hack: some MSVC/GCC versions 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 virtual ::FLAC__StreamDecoderInitStatus init(FILE *file);
229 virtual ::FLAC__StreamDecoderInitStatus init(const char *filename);
230 virtual ::FLAC__StreamDecoderInitStatus init(const std::string &filename);
231 virtual ::FLAC__StreamDecoderInitStatus init_ogg(FILE *file);
232 virtual ::FLAC__StreamDecoderInitStatus init_ogg(const char *filename);
233 virtual ::FLAC__StreamDecoderInitStatus init_ogg(const std::string &filename);
234 protected:
235 // this is a dummy implementation to satisfy the pure virtual in Stream that is actually supplied internally by the C layer
236 virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes);
237 private:
238 // Private and undefined so you can't use them:
239 File(const File &);
240 void operator=(const File &);
241 };
242
243 }
244 }
245
246 #endif
FLAC__stream_decoder_get_resolved_state_string
const char * FLAC__stream_decoder_get_resolved_state_string(const FLAC__StreamDecoder *decoder)
FLAC
Definition: decoder.h:78
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__StreamDecoderTellStatus
FLAC__StreamDecoderTellStatus
Definition: stream_decoder.h:348
FLAC__StreamDecoderStateString
const char *const FLAC__StreamDecoderStateString[]
FLAC__StreamDecoderErrorStatus
FLAC__StreamDecoderErrorStatus
Definition: stream_decoder.h:427
FLAC__StreamDecoder
Definition: stream_decoder.h:463
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__StreamDecoderInitStatus
FLAC__StreamDecoderInitStatus
Definition: stream_decoder.h:256
FLAC__StreamDecoderWriteStatus
FLAC__StreamDecoderWriteStatus
Definition: stream_decoder.h:394
export.h
This module contains #defines and symbols for exporting function calls, and providing version informa...
FLAC__MetadataType
FLAC__MetadataType
Definition: format.h:489
FLAC__StreamDecoderReadStatus
FLAC__StreamDecoderReadStatus
Definition: stream_decoder.h:294
FLAC__StreamDecoderState
FLAC__StreamDecoderState
Definition: stream_decoder.h:202
FLAC__StreamDecoderLengthStatus
FLAC__StreamDecoderLengthStatus
Definition: stream_decoder.h:371
FLAC__ChannelAssignment
FLAC__ChannelAssignment
Definition: format.h:381
FLAC::Decoder::Stream::State
Definition: decoder.h:104
FLAC__StreamDecoderSeekStatus
FLAC__StreamDecoderSeekStatus
Definition: stream_decoder.h:325
stream_decoder.h
This module contains the functions which implement the stream decoder.

Copyright (c) 2000-2009 Josh Coalson Copyright (c) 2011-2014 Xiph.Org Foundation |