src/libFLAC++/stream_decoder.cpp

   1 /* libFLAC++ - Free Lossless Audio Codec library
   2  * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009  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                 // ------------------------------------------------------------
  44                 //
  45                 // Stream
  46                 //
  47                 // ------------------------------------------------------------
  48
  49                 Stream::Stream():
  50                 decoder_(::FLAC__stream_decoder_new())
  51                 { }
  52
  53                 Stream::~Stream()
  54                 {
  55                         if(0 != decoder_) {
  56                                 (void)::FLAC__stream_decoder_finish(decoder_);
  57                                 ::FLAC__stream_decoder_delete(decoder_);
  58                         }
  59                 }
  60
  61                 bool Stream::is_valid() const
  62                 {
  63                         return 0 != decoder_;
  64                 }
  65
  66                 bool Stream::set_ogg_serial_number(long value)
  67                 {
  68                         FLAC__ASSERT(is_valid());
  69                         return (bool)::FLAC__stream_decoder_set_ogg_serial_number(decoder_, value);
  70                 }
  71
  72                 bool Stream::set_md5_checking(bool value)
  73                 {
  74                         FLAC__ASSERT(is_valid());
  75                         return (bool)::FLAC__stream_decoder_set_md5_checking(decoder_, value);
  76                 }
  77
  78                 bool Stream::set_metadata_respond(::FLAC__MetadataType type)
  79                 {
  80                         FLAC__ASSERT(is_valid());
  81                         return (bool)::FLAC__stream_decoder_set_metadata_respond(decoder_, type);
  82                 }
  83
  84                 bool Stream::set_metadata_respond_application(const FLAC__byte id[4])
  85                 {
  86                         FLAC__ASSERT(is_valid());
  87                         return (bool)::FLAC__stream_decoder_set_metadata_respond_application(decoder_, id);
  88                 }
  89
  90                 bool Stream::set_metadata_respond_all()
  91                 {
  92                         FLAC__ASSERT(is_valid());
  93                         return (bool)::FLAC__stream_decoder_set_metadata_respond_all(decoder_);
  94                 }
  95
  96                 bool Stream::set_metadata_ignore(::FLAC__MetadataType type)
  97                 {
  98                         FLAC__ASSERT(is_valid());
  99                         return (bool)::FLAC__stream_decoder_set_metadata_ignore(decoder_, type);
 100                 }
 101
 102                 bool Stream::set_metadata_ignore_application(const FLAC__byte id[4])
 103                 {
 104                         FLAC__ASSERT(is_valid());
 105                         return (bool)::FLAC__stream_decoder_set_metadata_ignore_application(decoder_, id);
 106                 }
 107
 108                 bool Stream::set_metadata_ignore_all()
 109                 {
 110                         FLAC__ASSERT(is_valid());
 111                         return (bool)::FLAC__stream_decoder_set_metadata_ignore_all(decoder_);
 112                 }
 113
 114                 Stream::State Stream::get_state() const
 115                 {
 116                         FLAC__ASSERT(is_valid());
 117                         return State(::FLAC__stream_decoder_get_state(decoder_));
 118                 }
 119
 120                 bool Stream::get_md5_checking() const
 121                 {
 122                         FLAC__ASSERT(is_valid());
 123                         return (bool)::FLAC__stream_decoder_get_md5_checking(decoder_);
 124                 }
 125
 126                 FLAC__uint64 Stream::get_total_samples() const
 127                 {
 128                         FLAC__ASSERT(is_valid());
 129                         return ::FLAC__stream_decoder_get_total_samples(decoder_);
 130                 }
 131
 132                 unsigned Stream::get_channels() const
 133                 {
 134                         FLAC__ASSERT(is_valid());
 135                         return ::FLAC__stream_decoder_get_channels(decoder_);
 136                 }
 137
 138                 ::FLAC__ChannelAssignment Stream::get_channel_assignment() const
 139                 {
 140                         FLAC__ASSERT(is_valid());
 141                         return ::FLAC__stream_decoder_get_channel_assignment(decoder_);
 142                 }
 143
 144                 unsigned Stream::get_bits_per_sample() const
 145                 {
 146                         FLAC__ASSERT(is_valid());
 147                         return ::FLAC__stream_decoder_get_bits_per_sample(decoder_);
 148                 }
 149
 150                 unsigned Stream::get_sample_rate() const
 151                 {
 152                         FLAC__ASSERT(is_valid());
 153                         return ::FLAC__stream_decoder_get_sample_rate(decoder_);
 154                 }
 155
 156                 unsigned Stream::get_blocksize() const
 157                 {
 158                         FLAC__ASSERT(is_valid());
 159                         return ::FLAC__stream_decoder_get_blocksize(decoder_);
 160                 }
 161
 162                 bool Stream::get_decode_position(FLAC__uint64 *position) const
 163                 {
 164                         FLAC__ASSERT(is_valid());
 165                         return ::FLAC__stream_decoder_get_decode_position(decoder_, position);
 166                 }
 167
 168                 ::FLAC__StreamDecoderInitStatus Stream::init()
 169                 {
 170                         FLAC__ASSERT(is_valid());
 171                         return ::FLAC__stream_decoder_init_stream(decoder_, read_callback_, seek_callback_, tell_callback_, length_callback_, eof_callback_, write_callback_, metadata_callback_, error_callback_, /*client_data=*/(void*)this);
 172                 }
 173
 174                 ::FLAC__StreamDecoderInitStatus Stream::init_ogg()
 175                 {
 176                         FLAC__ASSERT(is_valid());
 177                         return ::FLAC__stream_decoder_init_ogg_stream(decoder_, read_callback_, seek_callback_, tell_callback_, length_callback_, eof_callback_, write_callback_, metadata_callback_, error_callback_, /*client_data=*/(void*)this);
 178                 }
 179
 180                 bool Stream::finish()
 181                 {
 182                         FLAC__ASSERT(is_valid());
 183                         return (bool)::FLAC__stream_decoder_finish(decoder_);
 184                 }
 185
 186                 bool Stream::flush()
 187                 {
 188                         FLAC__ASSERT(is_valid());
 189                         return (bool)::FLAC__stream_decoder_flush(decoder_);
 190                 }
 191
 192                 bool Stream::reset()
 193                 {
 194                         FLAC__ASSERT(is_valid());
 195                         return (bool)::FLAC__stream_decoder_reset(decoder_);
 196                 }
 197
 198                 bool Stream::process_single()
 199                 {
 200                         FLAC__ASSERT(is_valid());
 201                         return (bool)::FLAC__stream_decoder_process_single(decoder_);
 202                 }
 203
 204                 bool Stream::process_until_end_of_metadata()
 205                 {
 206                         FLAC__ASSERT(is_valid());
 207                         return (bool)::FLAC__stream_decoder_process_until_end_of_metadata(decoder_);
 208                 }
 209
 210                 bool Stream::process_until_end_of_stream()
 211                 {
 212                         FLAC__ASSERT(is_valid());
 213                         return (bool)::FLAC__stream_decoder_process_until_end_of_stream(decoder_);
 214                 }
 215
 216                 bool Stream::skip_single_frame()
 217                 {
 218                         FLAC__ASSERT(is_valid());
 219                         return (bool)::FLAC__stream_decoder_skip_single_frame(decoder_);
 220                 }
 221
 222                 bool Stream::seek_absolute(FLAC__uint64 sample)
 223                 {
 224                         FLAC__ASSERT(is_valid());
 225                         return (bool)::FLAC__stream_decoder_seek_absolute(decoder_, sample);
 226                 }
 227
 228                 ::FLAC__StreamDecoderSeekStatus Stream::seek_callback(FLAC__uint64 absolute_byte_offset)
 229                 {
 230                         (void)absolute_byte_offset;
 231                         return ::FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED;
 232                 }
 233
 234                 ::FLAC__StreamDecoderTellStatus Stream::tell_callback(FLAC__uint64 *absolute_byte_offset)
 235                 {
 236                         (void)absolute_byte_offset;
 237                         return ::FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED;
 238                 }
 239
 240                 ::FLAC__StreamDecoderLengthStatus Stream::length_callback(FLAC__uint64 *stream_length)
 241                 {
 242                         (void)stream_length;
 243                         return ::FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED;
 244                 }
 245
 246                 bool Stream::eof_callback()
 247                 {
 248                         return false;
 249                 }
 250
 251                 void Stream::metadata_callback(const ::FLAC__StreamMetadata *metadata)
 252                 {
 253                         (void)metadata;
 254                 }
 255
 256                 ::FLAC__StreamDecoderReadStatus Stream::read_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
 257                 {
 258                         (void)decoder;
 259                         FLAC__ASSERT(0 != client_data);
 260                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 261                         FLAC__ASSERT(0 != instance);
 262                         return instance->read_callback(buffer, bytes);
 263                 }
 264
 265                 ::FLAC__StreamDecoderSeekStatus Stream::seek_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data)
 266                 {
 267                         (void) decoder;
 268                         FLAC__ASSERT(0 != client_data);
 269                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 270                         FLAC__ASSERT(0 != instance);
 271                         return instance->seek_callback(absolute_byte_offset);
 272                 }
 273
 274                 ::FLAC__StreamDecoderTellStatus Stream::tell_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
 275                 {
 276                         (void) decoder;
 277                         FLAC__ASSERT(0 != client_data);
 278                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 279                         FLAC__ASSERT(0 != instance);
 280                         return instance->tell_callback(absolute_byte_offset);
 281                 }
 282
 283                 ::FLAC__StreamDecoderLengthStatus Stream::length_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
 284                 {
 285                         (void) decoder;
 286                         FLAC__ASSERT(0 != client_data);
 287                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 288                         FLAC__ASSERT(0 != instance);
 289                         return instance->length_callback(stream_length);
 290                 }
 291
 292                 FLAC__bool Stream::eof_callback_(const ::FLAC__StreamDecoder *decoder, void *client_data)
 293                 {
 294                         (void) decoder;
 295                         FLAC__ASSERT(0 != client_data);
 296                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 297                         FLAC__ASSERT(0 != instance);
 298                         return instance->eof_callback();
 299                 }
 300
 301                 ::FLAC__StreamDecoderWriteStatus Stream::write_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
 302                 {
 303                         (void)decoder;
 304                         FLAC__ASSERT(0 != client_data);
 305                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 306                         FLAC__ASSERT(0 != instance);
 307                         return instance->write_callback(frame, buffer);
 308                 }
 309
 310                 void Stream::metadata_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data)
 311                 {
 312                         (void)decoder;
 313                         FLAC__ASSERT(0 != client_data);
 314                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 315                         FLAC__ASSERT(0 != instance);
 316                         instance->metadata_callback(metadata);
 317                 }
 318
 319                 void Stream::error_callback_(const ::FLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data)
 320                 {
 321                         (void)decoder;
 322                         FLAC__ASSERT(0 != client_data);
 323                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 324                         FLAC__ASSERT(0 != instance);
 325                         instance->error_callback(status);
 326                 }
 327
 328                 // ------------------------------------------------------------
 329                 //
 330                 // File
 331                 //
 332                 // ------------------------------------------------------------
 333
 334                 File::File():
 335                         Stream()
 336                 { }
 337
 338                 File::~File()
 339                 {
 340                 }
 341
 342                 ::FLAC__StreamDecoderInitStatus File::init(FILE *file)
 343                 {
 344                         FLAC__ASSERT(0 != decoder_);
 345                         return ::FLAC__stream_decoder_init_FILE(decoder_, file, write_callback_, metadata_callback_, error_callback_, /*client_data=*/(void*)this);
 346                 }
 347
 348                 ::FLAC__StreamDecoderInitStatus File::init(const char *filename)
 349                 {
 350                         FLAC__ASSERT(0 != decoder_);
 351                         return ::FLAC__stream_decoder_init_file(decoder_, filename, write_callback_, metadata_callback_, error_callback_, /*client_data=*/(void*)this);
 352                 }
 353
 354                 ::FLAC__StreamDecoderInitStatus File::init(const std::string &filename)
 355                 {
 356                         return init(filename.c_str());
 357                 }
 358
 359                 ::FLAC__StreamDecoderInitStatus File::init_ogg(FILE *file)
 360                 {
 361                         FLAC__ASSERT(0 != decoder_);
 362                         return ::FLAC__stream_decoder_init_ogg_FILE(decoder_, file, write_callback_, metadata_callback_, error_callback_, /*client_data=*/(void*)this);
 363                 }
 364
 365                 ::FLAC__StreamDecoderInitStatus File::init_ogg(const char *filename)
 366                 {
 367                         FLAC__ASSERT(0 != decoder_);
 368                         return ::FLAC__stream_decoder_init_ogg_file(decoder_, filename, write_callback_, metadata_callback_, error_callback_, /*client_data=*/(void*)this);
 369                 }
 370
 371                 ::FLAC__StreamDecoderInitStatus File::init_ogg(const std::string &filename)
 372                 {
 373                         return init_ogg(filename.c_str());
 374                 }
 375
 376                 // This is a dummy to satisfy the pure virtual from Stream; the
 377                 // read callback will never be called since we are initializing
 378                 // with FLAC__stream_decoder_init_FILE() or
 379                 // FLAC__stream_decoder_init_file() and those supply the read
 380                 // callback internally.
 381                 ::FLAC__StreamDecoderReadStatus File::read_callback(FLAC__byte buffer[], size_t *bytes)
 382                 {
 383                         (void)buffer, (void)bytes;
 384                         FLAC__ASSERT(false);
 385                         return ::FLAC__STREAM_DECODER_READ_STATUS_ABORT; // double protection
 386                 }
 387
 388         }
 389 }