src/libFLAC++/seekable_stream_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                 SeekableStream::SeekableStream():
  27                 decoder_(::FLAC__seekable_stream_decoder_new())
  28                 { }
  29
  30                 SeekableStream::~SeekableStream()
  31                 {
  32                         if(0 != decoder_) {
  33                                 (void) ::FLAC__seekable_stream_decoder_finish(decoder_);
  34                                 ::FLAC__seekable_stream_decoder_delete(decoder_);
  35                         }
  36                 }
  37
  38                 bool SeekableStream::is_valid() const
  39                 {
  40                         return 0 != decoder_;
  41                 }
  42
  43                 bool SeekableStream::set_md5_checking(bool value)
  44                 {
  45                         FLAC__ASSERT(is_valid());
  46                         return ::FLAC__seekable_stream_decoder_set_md5_checking(decoder_, value);
  47                 }
  48
  49                 bool SeekableStream::set_metadata_respond(::FLAC__MetaDataType type)
  50                 {
  51                         FLAC__ASSERT(is_valid());
  52                         return ::FLAC__seekable_stream_decoder_set_metadata_respond(decoder_, type);
  53                 }
  54
  55                 bool SeekableStream::set_metadata_respond_application(const FLAC__byte id[4])
  56                 {
  57                         FLAC__ASSERT(is_valid());
  58                         return ::FLAC__seekable_stream_decoder_set_metadata_respond_application(decoder_, id);
  59                 }
  60
  61                 bool SeekableStream::set_metadata_respond_all()
  62                 {
  63                         FLAC__ASSERT(is_valid());
  64                         return ::FLAC__seekable_stream_decoder_set_metadata_respond_all(decoder_);
  65                 }
  66
  67                 bool SeekableStream::set_metadata_ignore(::FLAC__MetaDataType type)
  68                 {
  69                         FLAC__ASSERT(is_valid());
  70                         return ::FLAC__seekable_stream_decoder_set_metadata_ignore(decoder_, type);
  71                 }
  72
  73                 bool SeekableStream::set_metadata_ignore_application(const FLAC__byte id[4])
  74                 {
  75                         FLAC__ASSERT(is_valid());
  76                         return ::FLAC__seekable_stream_decoder_set_metadata_ignore_application(decoder_, id);
  77                 }
  78
  79                 bool SeekableStream::set_metadata_ignore_all()
  80                 {
  81                         FLAC__ASSERT(is_valid());
  82                         return ::FLAC__seekable_stream_decoder_set_metadata_ignore_all(decoder_);
  83                 }
  84
  85                 SeekableStream::State SeekableStream::get_state() const
  86                 {
  87                         FLAC__ASSERT(is_valid());
  88                         return State(::FLAC__seekable_stream_decoder_get_state(decoder_));
  89                 }
  90
  91                 bool SeekableStream::get_md5_checking() const
  92                 {
  93                         FLAC__ASSERT(is_valid());
  94                         return ::FLAC__seekable_stream_decoder_get_md5_checking(decoder_);
  95                 }
  96
  97                 SeekableStream::State SeekableStream::init()
  98                 {
  99                         FLAC__ASSERT(is_valid());
 100                         ::FLAC__seekable_stream_decoder_set_read_callback(decoder_, read_callback_);
 101                         ::FLAC__seekable_stream_decoder_set_seek_callback(decoder_, seek_callback_);
 102                         ::FLAC__seekable_stream_decoder_set_tell_callback(decoder_, tell_callback_);
 103                         ::FLAC__seekable_stream_decoder_set_length_callback(decoder_, length_callback_);
 104                         ::FLAC__seekable_stream_decoder_set_eof_callback(decoder_, eof_callback_);
 105                         ::FLAC__seekable_stream_decoder_set_write_callback(decoder_, write_callback_);
 106                         ::FLAC__seekable_stream_decoder_set_metadata_callback(decoder_, metadata_callback_);
 107                         ::FLAC__seekable_stream_decoder_set_error_callback(decoder_, error_callback_);
 108                         ::FLAC__seekable_stream_decoder_set_client_data(decoder_, (void*)this);
 109                         return State(::FLAC__seekable_stream_decoder_init(decoder_));
 110                 }
 111
 112                 bool SeekableStream::finish()
 113                 {
 114                         FLAC__ASSERT(is_valid());
 115                         return ::FLAC__seekable_stream_decoder_finish(decoder_);
 116                 }
 117
 118                 bool SeekableStream::process_whole_stream()
 119                 {
 120                         FLAC__ASSERT(is_valid());
 121                         return ::FLAC__seekable_stream_decoder_process_whole_stream(decoder_);
 122                 }
 123
 124                 bool SeekableStream::process_metadata()
 125                 {
 126                         FLAC__ASSERT(is_valid());
 127                         return ::FLAC__seekable_stream_decoder_process_metadata(decoder_);
 128                 }
 129
 130                 bool SeekableStream::process_one_frame()
 131                 {
 132                         FLAC__ASSERT(is_valid());
 133                         return ::FLAC__seekable_stream_decoder_process_one_frame(decoder_);
 134                 }
 135
 136                 bool SeekableStream::process_remaining_frames()
 137                 {
 138                         FLAC__ASSERT(is_valid());
 139                         return ::FLAC__seekable_stream_decoder_process_remaining_frames(decoder_);
 140                 }
 141
 142                 bool SeekableStream::seek_absolute(FLAC__uint64 sample)
 143                 {
 144                         FLAC__ASSERT(is_valid());
 145                         return ::FLAC__seekable_stream_decoder_seek_absolute(decoder_, sample);
 146                 }
 147
 148                 FLAC__SeekableStreamDecoderReadStatus SeekableStream::read_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
 149                 {
 150                         (void) decoder;
 151                         FLAC__ASSERT(0 != client_data);
 152                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 153                         FLAC__ASSERT(0 != instance);
 154                         return instance->read_callback(buffer, bytes);
 155                 }
 156
 157                 FLAC__SeekableStreamDecoderSeekStatus SeekableStream::seek_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data)
 158                 {
 159                         (void) decoder;
 160                         FLAC__ASSERT(0 != client_data);
 161                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 162                         FLAC__ASSERT(0 != instance);
 163                         return instance->seek_callback(absolute_byte_offset);
 164                 }
 165
 166                 FLAC__SeekableStreamDecoderTellStatus SeekableStream::tell_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
 167                 {
 168                         (void) decoder;
 169                         FLAC__ASSERT(0 != client_data);
 170                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 171                         FLAC__ASSERT(0 != instance);
 172                         return instance->tell_callback(absolute_byte_offset);
 173                 }
 174
 175                 FLAC__SeekableStreamDecoderLengthStatus SeekableStream::length_callback_(const ::FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
 176                 {
 177                         (void) decoder;
 178                         FLAC__ASSERT(0 != client_data);
 179                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 180                         FLAC__ASSERT(0 != instance);
 181                         return instance->length_callback(stream_length);
 182                 }
 183
 184                 FLAC__bool SeekableStream::eof_callback_(const ::FLAC__SeekableStreamDecoder *decoder, void *client_data)
 185                 {
 186                         (void) decoder;
 187                         FLAC__ASSERT(0 != client_data);
 188                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 189                         FLAC__ASSERT(0 != instance);
 190                         return instance->eof_callback();
 191                 }
 192
 193                 FLAC__StreamDecoderWriteStatus SeekableStream::write_callback_(const ::FLAC__SeekableStreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data)
 194                 {
 195                         (void) decoder;
 196                         FLAC__ASSERT(0 != client_data);
 197                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 198                         FLAC__ASSERT(0 != instance);
 199                         return instance->write_callback(frame, buffer);
 200                 }
 201
 202                 void SeekableStream::metadata_callback_(const ::FLAC__SeekableStreamDecoder *decoder, const ::FLAC__StreamMetaData *metadata, void *client_data)
 203                 {
 204                         (void) decoder;
 205                         FLAC__ASSERT(0 != client_data);
 206                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 207                         FLAC__ASSERT(0 != instance);
 208                         instance->metadata_callback(metadata);
 209                 }
 210
 211                 void SeekableStream::error_callback_(const ::FLAC__SeekableStreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data)
 212                 {
 213                         (void) decoder;
 214                         FLAC__ASSERT(0 != client_data);
 215                         SeekableStream *instance = reinterpret_cast<SeekableStream *>(client_data);
 216                         FLAC__ASSERT(0 != instance);
 217                         instance->error_callback(status);
 218                 }
 219
 220         };
 221 };