src/libFLAC++/file_decoder.cc

   1 /* libFLAC++ - Free Lossless Audio Codec library
   2  * Copyright (C) 2002  Josh Coalson
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA  02111-1307, USA.
  18  */
  19
  20 #include "FLAC++/decoder.h"
  21 #include "FLAC/assert.h"
  22
  23 namespace FLAC {
  24         namespace Decoder {
  25
  26                 File::File():
  27                 decoder_(::FLAC__file_decoder_new())
  28                 { }
  29
  30                 File::~File()
  31                 {
  32                         if(0 != decoder_) {
  33                                 (void) ::FLAC__file_decoder_finish(decoder_);
  34                                 ::FLAC__file_decoder_delete(decoder_);
  35                         }
  36                 }
  37
  38                 bool File::is_valid() const
  39                 {
  40                         return 0 != decoder_;
  41                 }
  42
  43                 bool File::set_md5_checking(bool value)
  44                 {
  45                         FLAC__ASSERT(0 != decoder_);
  46                         return ::FLAC__file_decoder_set_md5_checking(decoder_, value);
  47                 }
  48
  49                 bool File::set_filename(const char *value)
  50                 {
  51                         FLAC__ASSERT(0 != decoder_);
  52                         return ::FLAC__file_decoder_set_filename(decoder_, value);
  53                 }
  54
  55                 bool File::set_metadata_respond(::FLAC__MetaDataType type)
  56                 {
  57                         FLAC__ASSERT(0 != decoder_);
  58                         return ::FLAC__file_decoder_set_metadata_respond(decoder_, type);
  59                 }
  60
  61                 bool File::set_metadata_respond_application(const FLAC__byte id[4])
  62                 {
  63                         FLAC__ASSERT(0 != decoder_);
  64                         return ::FLAC__file_decoder_set_metadata_respond_application(decoder_, id);
  65                 }
  66
  67                 bool File::set_metadata_respond_all()
  68                 {
  69                         FLAC__ASSERT(0 != decoder_);
  70                         return ::FLAC__file_decoder_set_metadata_respond_all(decoder_);
  71                 }
  72
  73                 bool File::set_metadata_ignore(::FLAC__MetaDataType type)
  74                 {
  75                         FLAC__ASSERT(0 != decoder_);
  76                         return ::FLAC__file_decoder_set_metadata_ignore(decoder_, type);
  77                 }
  78
  79                 bool File::set_metadata_ignore_application(const FLAC__byte id[4])
  80                 {
  81                         FLAC__ASSERT(0 != decoder_);
  82                         return ::FLAC__file_decoder_set_metadata_ignore_application(decoder_, id);
  83                 }
  84
  85                 bool File::set_metadata_ignore_all()
  86                 {
  87                         FLAC__ASSERT(0 != decoder_);
  88                         return ::FLAC__file_decoder_set_metadata_ignore_all(decoder_);
  89                 }
  90
  91                 File::State File::get_state() const
  92                 {
  93                         FLAC__ASSERT(0 != decoder_);
  94                         return State(::FLAC__file_decoder_get_state(decoder_));
  95                 }
  96
  97                 bool File::get_md5_checking() const
  98                 {
  99                         FLAC__ASSERT(0 != decoder_);
 100                         return ::FLAC__file_decoder_get_md5_checking(decoder_);
 101                 }
 102
 103                 File::State File::init()
 104                 {
 105                         FLAC__ASSERT(0 != decoder_);
 106                         ::FLAC__file_decoder_set_write_callback(decoder_, write_callback_);
 107                         ::FLAC__file_decoder_set_metadata_callback(decoder_, metadata_callback_);
 108                         ::FLAC__file_decoder_set_error_callback(decoder_, error_callback_);
 109                         ::FLAC__file_decoder_set_client_data(decoder_, (void*)this);
 110                         return State(::FLAC__file_decoder_init(decoder_));
 111                 }
 112
 113                 bool File::finish()
 114                 {
 115                         FLAC__ASSERT(0 != decoder_);
 116                         return ::FLAC__file_decoder_finish(decoder_);
 117                 }
 118
 119                 bool File::process_whole_file()
 120                 {
 121                         FLAC__ASSERT(0 != decoder_);
 122                         return ::FLAC__file_decoder_process_whole_file(decoder_);
 123                 }
 124
 125                 bool File::process_metadata()
 126                 {
 127                         FLAC__ASSERT(0 != decoder_);
 128                         return ::FLAC__file_decoder_process_metadata(decoder_);
 129                 }
 130
 131                 bool File::process_one_frame()
 132                 {
 133                         FLAC__ASSERT(0 != decoder_);
 134                         return ::FLAC__file_decoder_process_one_frame(decoder_);
 135                 }
 136
 137                 bool File::process_remaining_frames()
 138                 {
 139                         FLAC__ASSERT(0 != decoder_);
 140                         return ::FLAC__file_decoder_process_remaining_frames(decoder_);
 141                 }
 142
 143                 bool File::seek_absolute(FLAC__uint64 sample)
 144                 {
 145                         FLAC__ASSERT(0 != decoder_);
 146                         return ::FLAC__file_decoder_seek_absolute(decoder_, sample);
 147                 }
 148
 149                 ::FLAC__StreamDecoderWriteStatus File::write_callback_(const ::FLAC__FileDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data)
 150                 {
 151                         (void) decoder;
 152                         FLAC__ASSERT(0 != client_data);
 153                         File *instance = reinterpret_cast<File *>(client_data);
 154                         FLAC__ASSERT(0 != instance);
 155                         return instance->write_callback(frame, buffer);
 156                 }
 157
 158                 void File::metadata_callback_(const ::FLAC__FileDecoder *decoder, const ::FLAC__StreamMetaData *metadata, void *client_data)
 159                 {
 160                         (void) decoder;
 161                         FLAC__ASSERT(0 != client_data);
 162                         File *instance = reinterpret_cast<File *>(client_data);
 163                         FLAC__ASSERT(0 != instance);
 164                         instance->metadata_callback(metadata);
 165                 }
 166
 167                 void File::error_callback_(const ::FLAC__FileDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data)
 168                 {
 169                         (void) decoder;
 170                         FLAC__ASSERT(0 != client_data);
 171                         File *instance = reinterpret_cast<File *>(client_data);
 172                         FLAC__ASSERT(0 != instance);
 173                         instance->error_callback(status);
 174                 }
 175
 176         };
 177 };