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

00001 /* libFLAC++ - Free Lossless Audio Codec library
cannam@86: 00002  * Copyright (C) 2002,2003,2004,2005,2006,2007  Josh Coalson
cannam@86: 00003  *
cannam@86: 00004  * Redistribution and use in source and binary forms, with or without
cannam@86: 00005  * modification, are permitted provided that the following conditions
cannam@86: 00006  * are met:
cannam@86: 00007  *
cannam@86: 00008  * - Redistributions of source code must retain the above copyright
cannam@86: 00009  * notice, this list of conditions and the following disclaimer.
cannam@86: 00010  *
cannam@86: 00011  * - Redistributions in binary form must reproduce the above copyright
cannam@86: 00012  * notice, this list of conditions and the following disclaimer in the
cannam@86: 00013  * documentation and/or other materials provided with the distribution.
cannam@86: 00014  *
cannam@86: 00015  * - Neither the name of the Xiph.org Foundation nor the names of its
cannam@86: 00016  * contributors may be used to endorse or promote products derived from
cannam@86: 00017  * this software without specific prior written permission.
cannam@86: 00018  *
cannam@86: 00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
cannam@86: 00020  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
cannam@86: 00021  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
cannam@86: 00022  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
cannam@86: 00023  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
cannam@86: 00024  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
cannam@86: 00025  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
cannam@86: 00026  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
cannam@86: 00027  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
cannam@86: 00028  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
cannam@86: 00029  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cannam@86: 00030  */
cannam@86: 00031 
cannam@86: 00032 #ifndef FLACPP__DECODER_H
cannam@86: 00033 #define FLACPP__DECODER_H
cannam@86: 00034 
cannam@86: 00035 #include "export.h"
cannam@86: 00036 
cannam@86: 00037 #include <string>
cannam@86: 00038 #include "FLAC/stream_decoder.h"
cannam@86: 00039 
cannam@86: 00040 
cannam@86: 00077 namespace FLAC {
cannam@86: 00078     namespace Decoder {
cannam@86: 00079 
cannam@86: 00099         class FLACPP_API Stream {
cannam@86: 00100         public:
cannam@86: 00103             class FLACPP_API State {
cannam@86: 00104             public:
cannam@86: 00105                 inline State(::FLAC__StreamDecoderState state): state_(state) { }
cannam@86: 00106                 inline operator ::FLAC__StreamDecoderState() const { return state_; }
cannam@86: 00107                 inline const char *as_cstring() const { return ::FLAC__StreamDecoderStateString[state_]; }
cannam@86: 00108                 inline const char *resolved_as_cstring(const Stream &decoder) const { return ::FLAC__stream_decoder_get_resolved_state_string(decoder.decoder_); }
cannam@86: 00109             protected:
cannam@86: 00110 				::FLAC__StreamDecoderState state_;
cannam@86: 00111             };
cannam@86: 00112 
cannam@86: 00113             Stream();
cannam@86: 00114             virtual ~Stream();
cannam@86: 00115 
cannam@86: 00117 
cannam@86: 00120             virtual bool is_valid() const;
cannam@86: 00121             inline operator bool() const { return is_valid(); } 
cannam@86: 00122 
cannam@86: 00123 
cannam@86: 00124             virtual bool set_ogg_serial_number(long value);                        
cannam@86: 00125             virtual bool set_md5_checking(bool value);                             
cannam@86: 00126             virtual bool set_metadata_respond(::FLAC__MetadataType type);          
cannam@86: 00127             virtual bool set_metadata_respond_application(const FLAC__byte id[4]); 
cannam@86: 00128             virtual bool set_metadata_respond_all();                               
cannam@86: 00129             virtual bool set_metadata_ignore(::FLAC__MetadataType type);           
cannam@86: 00130             virtual bool set_metadata_ignore_application(const FLAC__byte id[4]);  
cannam@86: 00131             virtual bool set_metadata_ignore_all();                                
cannam@86: 00132 
cannam@86: 00133             /* get_state() is not virtual since we want subclasses to be able to return their own state */
cannam@86: 00134             State get_state() const;                                          
cannam@86: 00135             virtual bool get_md5_checking() const;                            
cannam@86: 00136             virtual FLAC__uint64 get_total_samples() const;                   
cannam@86: 00137             virtual unsigned get_channels() const;                            
cannam@86: 00138             virtual ::FLAC__ChannelAssignment get_channel_assignment() const; 
cannam@86: 00139             virtual unsigned get_bits_per_sample() const;                     
cannam@86: 00140             virtual unsigned get_sample_rate() const;                         
cannam@86: 00141             virtual unsigned get_blocksize() const;                           
cannam@86: 00142             virtual bool get_decode_position(FLAC__uint64 *position) const;   
cannam@86: 00143 
cannam@86: 00144             virtual ::FLAC__StreamDecoderInitStatus init();      
cannam@86: 00145             virtual ::FLAC__StreamDecoderInitStatus init_ogg();  
cannam@86: 00146 
cannam@86: 00147             virtual bool finish(); 
cannam@86: 00148 
cannam@86: 00149             virtual bool flush(); 
cannam@86: 00150             virtual bool reset(); 
cannam@86: 00151 
cannam@86: 00152             virtual bool process_single();                
cannam@86: 00153             virtual bool process_until_end_of_metadata(); 
cannam@86: 00154             virtual bool process_until_end_of_stream();   
cannam@86: 00155             virtual bool skip_single_frame();             
cannam@86: 00156 
cannam@86: 00157             virtual bool seek_absolute(FLAC__uint64 sample); 
cannam@86: 00158         protected:
cannam@86: 00160             virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes) = 0;
cannam@86: 00161 
cannam@86: 00163             virtual ::FLAC__StreamDecoderSeekStatus seek_callback(FLAC__uint64 absolute_byte_offset);
cannam@86: 00164 
cannam@86: 00166             virtual ::FLAC__StreamDecoderTellStatus tell_callback(FLAC__uint64 *absolute_byte_offset);
cannam@86: 00167 
cannam@86: 00169             virtual ::FLAC__StreamDecoderLengthStatus length_callback(FLAC__uint64 *stream_length);
cannam@86: 00170 
cannam@86: 00172             virtual bool eof_callback();
cannam@86: 00173 
cannam@86: 00175             virtual ::FLAC__StreamDecoderWriteStatus write_callback(const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[]) = 0;
cannam@86: 00176 
cannam@86: 00178             virtual void metadata_callback(const ::FLAC__StreamMetadata *metadata);
cannam@86: 00179 
cannam@86: 00181             virtual void error_callback(::FLAC__StreamDecoderErrorStatus status) = 0;
cannam@86: 00182 
cannam@86: 00183 #if (defined _MSC_VER) || (defined __BORLANDC__) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
cannam@86: 00184             // lame hack: some MSVC/GCC versions can't see a protected decoder_ from nested State::resolved_as_cstring()
cannam@86: 00185             friend State;
cannam@86: 00186 #endif
cannam@86: 00187             ::FLAC__StreamDecoder *decoder_;
cannam@86: 00188 
cannam@86: 00189             static ::FLAC__StreamDecoderReadStatus read_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
cannam@86: 00190             static ::FLAC__StreamDecoderSeekStatus seek_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
cannam@86: 00191             static ::FLAC__StreamDecoderTellStatus tell_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
cannam@86: 00192             static ::FLAC__StreamDecoderLengthStatus length_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
cannam@86: 00193             static FLAC__bool eof_callback_(const ::FLAC__StreamDecoder *decoder, void *client_data);
cannam@86: 00194             static ::FLAC__StreamDecoderWriteStatus write_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
cannam@86: 00195             static void metadata_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data);
cannam@86: 00196             static void error_callback_(const ::FLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data);
cannam@86: 00197         private:
cannam@86: 00198             // Private and undefined so you can't use them:
cannam@86: 00199             Stream(const Stream &);
cannam@86: 00200             void operator=(const Stream &);
cannam@86: 00201         };
cannam@86: 00202 
cannam@86: 00222         class FLACPP_API File: public Stream {
cannam@86: 00223         public:
cannam@86: 00224             File();
cannam@86: 00225             virtual ~File();
cannam@86: 00226 
cannam@86: 00227             virtual ::FLAC__StreamDecoderInitStatus init(FILE *file);                      
cannam@86: 00228             virtual ::FLAC__StreamDecoderInitStatus init(const char *filename);            
cannam@86: 00229             virtual ::FLAC__StreamDecoderInitStatus init(const std::string &filename);     
cannam@86: 00230             virtual ::FLAC__StreamDecoderInitStatus init_ogg(FILE *file);                  
cannam@86: 00231             virtual ::FLAC__StreamDecoderInitStatus init_ogg(const char *filename);        
cannam@86: 00232             virtual ::FLAC__StreamDecoderInitStatus init_ogg(const std::string &filename); 
cannam@86: 00233         protected:
cannam@86: 00234             // this is a dummy implementation to satisfy the pure virtual in Stream that is actually supplied internally by the C layer
cannam@86: 00235             virtual ::FLAC__StreamDecoderReadStatus read_callback(FLAC__byte buffer[], size_t *bytes);
cannam@86: 00236         private:
cannam@86: 00237             // Private and undefined so you can't use them:
cannam@86: 00238             File(const File &);
cannam@86: 00239             void operator=(const File &);
cannam@86: 00240         };
cannam@86: 00241 
cannam@86: 00242     }
cannam@86: 00243 }
cannam@86: 00244 
cannam@86: 00245 #endif
cannam@86: