src/libFLAC++/file_decoder.cpp

   1 /* libFLAC++ - Free Lossless Audio Codec library
   2  * Copyright (C) 2002,2003,2004  Josh Coalson
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * - Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * - Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution.
  14  *
  15  * - Neither the name of the Xiph.org Foundation nor the names of its
  16  * contributors may be used to endorse or promote products derived from
  17  * this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include "FLAC++/decoder.h"
  33 #include "FLAC/assert.h"
  34
  35 #ifdef _MSC_VER
  36 // warning C4800: 'int' : forcing to bool 'true' or 'false' (performance warning)
  37 #pragma warning ( disable : 4800 )
  38 #endif
  39
  40 namespace FLAC {
  41         namespace Decoder {
  42
  43                 File::File():
  44                 decoder_(::FLAC__file_decoder_new())
  45                 { }
  46
  47                 File::~File()
  48                 {
  49                         if(0 != decoder_) {
  50                                 (void) ::FLAC__file_decoder_finish(decoder_);
  51                                 ::FLAC__file_decoder_delete(decoder_);
  52                         }
  53                 }
  54
  55                 bool File::is_valid() const
  56                 {
  57                         return 0 != decoder_;
  58                 }
  59
  60                 bool File::set_md5_checking(bool value)
  61                 {
  62                         FLAC__ASSERT(0 != decoder_);
  63                         return (bool)::FLAC__file_decoder_set_md5_checking(decoder_, value);
  64                 }
  65
  66                 bool File::set_filename(const char *value)
  67                 {
  68                         FLAC__ASSERT(0 != decoder_);
  69                         return (bool)::FLAC__file_decoder_set_filename(decoder_, value);
  70                 }
  71
  72                 bool File::set_metadata_respond(::FLAC__MetadataType type)
  73                 {
  74                         FLAC__ASSERT(0 != decoder_);
  75                         return (bool)::FLAC__file_decoder_set_metadata_respond(decoder_, type);
  76                 }
  77
  78                 bool File::set_metadata_respond_application(const FLAC__byte id[4])
  79                 {
  80                         FLAC__ASSERT(0 != decoder_);
  81                         return (bool)::FLAC__file_decoder_set_metadata_respond_application(decoder_, id);
  82                 }
  83
  84                 bool File::set_metadata_respond_all()
  85                 {
  86                         FLAC__ASSERT(0 != decoder_);
  87                         return (bool)::FLAC__file_decoder_set_metadata_respond_all(decoder_);
  88                 }
  89
  90                 bool File::set_metadata_ignore(::FLAC__MetadataType type)
  91                 {
  92                         FLAC__ASSERT(0 != decoder_);
  93                         return (bool)::FLAC__file_decoder_set_metadata_ignore(decoder_, type);
  94                 }
  95
  96                 bool File::set_metadata_ignore_application(const FLAC__byte id[4])
  97                 {
  98                         FLAC__ASSERT(0 != decoder_);
  99                         return (bool)::FLAC__file_decoder_set_metadata_ignore_application(decoder_, id);
 100                 }
 101
 102                 bool File::set_metadata_ignore_all()
 103                 {
 104                         FLAC__ASSERT(0 != decoder_);
 105                         return (bool)::FLAC__file_decoder_set_metadata_ignore_all(decoder_);
 106                 }
 107
 108                 File::State File::get_state() const
 109                 {
 110                         FLAC__ASSERT(0 != decoder_);
 111                         return State(::FLAC__file_decoder_get_state(decoder_));
 112                 }
 113
 114                 SeekableStream::State File::get_seekable_stream_decoder_state() const
 115                 {
 116                         FLAC__ASSERT(0 != decoder_);
 117                         return SeekableStream::State(::FLAC__file_decoder_get_seekable_stream_decoder_state(decoder_));
 118                 }
 119
 120                 Stream::State File::get_stream_decoder_state() const
 121                 {
 122                         FLAC__ASSERT(0 != decoder_);
 123                         return Stream::State(::FLAC__file_decoder_get_stream_decoder_state(decoder_));
 124                 }
 125
 126                 bool File::get_md5_checking() const
 127                 {
 128                         FLAC__ASSERT(0 != decoder_);
 129                         return (bool)::FLAC__file_decoder_get_md5_checking(decoder_);
 130                 }
 131
 132                 unsigned File::get_channels() const
 133                 {
 134                         FLAC__ASSERT(is_valid());
 135                         return ::FLAC__file_decoder_get_channels(decoder_);
 136                 }
 137
 138                 ::FLAC__ChannelAssignment File::get_channel_assignment() const
 139                 {
 140                         FLAC__ASSERT(is_valid());
 141                         return ::FLAC__file_decoder_get_channel_assignment(decoder_);
 142                 }
 143
 144                 unsigned File::get_bits_per_sample() const
 145                 {
 146                         FLAC__ASSERT(is_valid());
 147                         return ::FLAC__file_decoder_get_bits_per_sample(decoder_);
 148                 }
 149
 150                 unsigned File::get_sample_rate() const
 151                 {
 152                         FLAC__ASSERT(is_valid());
 153                         return ::FLAC__file_decoder_get_sample_rate(decoder_);
 154                 }
 155
 156                 unsigned File::get_blocksize() const
 157                 {
 158                         FLAC__ASSERT(is_valid());
 159                         return ::FLAC__file_decoder_get_blocksize(decoder_);
 160                 }
 161
 162                 File::State File::init()
 163                 {
 164                         FLAC__ASSERT(0 != decoder_);
 165                         ::FLAC__file_decoder_set_write_callback(decoder_, write_callback_);
 166                         ::FLAC__file_decoder_set_metadata_callback(decoder_, metadata_callback_);
 167                         ::FLAC__file_decoder_set_error_callback(decoder_, error_callback_);
 168                         ::FLAC__file_decoder_set_client_data(decoder_, (void*)this);
 169                         return State(::FLAC__file_decoder_init(decoder_));
 170                 }
 171
 172                 bool File::finish()
 173                 {
 174                         FLAC__ASSERT(0 != decoder_);
 175                         return (bool)::FLAC__file_decoder_finish(decoder_);
 176                 }
 177
 178                 bool File::process_single()
 179                 {
 180                         FLAC__ASSERT(0 != decoder_);
 181                         return (bool)::FLAC__file_decoder_process_single(decoder_);
 182                 }
 183
 184                 bool File::process_until_end_of_metadata()
 185                 {
 186                         FLAC__ASSERT(0 != decoder_);
 187                         return (bool)::FLAC__file_decoder_process_until_end_of_metadata(decoder_);
 188                 }
 189
 190                 bool File::process_until_end_of_file()
 191                 {
 192                         FLAC__ASSERT(0 != decoder_);
 193                         return (bool)::FLAC__file_decoder_process_until_end_of_file(decoder_);
 194                 }
 195
 196                 bool File::skip_single_frame()
 197                 {
 198                         FLAC__ASSERT(is_valid());
 199                         return (bool)::FLAC__file_decoder_skip_single_frame(decoder_);
 200                 }
 201
 202                 bool File::seek_absolute(FLAC__uint64 sample)
 203                 {
 204                         FLAC__ASSERT(0 != decoder_);
 205                         return (bool)::FLAC__file_decoder_seek_absolute(decoder_, sample);
 206                 }
 207
 208                 ::FLAC__StreamDecoderWriteStatus File::write_callback_(const ::FLAC__FileDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
 209                 {
 210                         (void) decoder;
 211                         FLAC__ASSERT(0 != client_data);
 212                         File *instance = reinterpret_cast<File *>(client_data);
 213                         FLAC__ASSERT(0 != instance);
 214                         return instance->write_callback(frame, buffer);
 215                 }
 216
 217                 void File::metadata_callback_(const ::FLAC__FileDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data)
 218                 {
 219                         (void) decoder;
 220                         FLAC__ASSERT(0 != client_data);
 221                         File *instance = reinterpret_cast<File *>(client_data);
 222                         FLAC__ASSERT(0 != instance);
 223                         instance->metadata_callback(metadata);
 224                 }
 225
 226                 void File::error_callback_(const ::FLAC__FileDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data)
 227                 {
 228                         (void) decoder;
 229                         FLAC__ASSERT(0 != client_data);
 230                         File *instance = reinterpret_cast<File *>(client_data);
 231                         FLAC__ASSERT(0 != instance);
 232                         instance->error_callback(status);
 233                 }
 234
 235         };
 236 };