src/libOggFLAC++/stream_decoder.cpp

   1 /* libOggFLAC++ - Free Lossless Audio Codec + Ogg 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 "OggFLAC++/decoder.h"
  21 #include "FLAC/assert.h"
  22
  23 namespace OggFLAC {
  24         namespace Decoder {
  25
  26                 Stream::Stream():
  27                 decoder_(::OggFLAC__stream_decoder_new())
  28                 { }
  29
  30                 Stream::~Stream()
  31                 {
  32                         if(0 != decoder_) {
  33                                 ::OggFLAC__stream_decoder_finish(decoder_);
  34                                 ::OggFLAC__stream_decoder_delete(decoder_);
  35                         }
  36                 }
  37
  38                 bool Stream::is_valid() const
  39                 {
  40                         return 0 != decoder_;
  41                 }
  42
  43                 bool Stream::set_serial_number(long value)
  44                 {
  45                         FLAC__ASSERT(is_valid());
  46                         return (bool)::OggFLAC__stream_decoder_set_serial_number(decoder_, value);
  47                 }
  48
  49                 bool Stream::set_metadata_respond(::FLAC__MetadataType type)
  50                 {
  51                         FLAC__ASSERT(is_valid());
  52                         return (bool)::OggFLAC__stream_decoder_set_metadata_respond(decoder_, type);
  53                 }
  54
  55                 bool Stream::set_metadata_respond_application(const FLAC__byte id[4])
  56                 {
  57                         FLAC__ASSERT(is_valid());
  58                         return (bool)::OggFLAC__stream_decoder_set_metadata_respond_application(decoder_, id);
  59                 }
  60
  61                 bool Stream::set_metadata_respond_all()
  62                 {
  63                         FLAC__ASSERT(is_valid());
  64                         return (bool)::OggFLAC__stream_decoder_set_metadata_respond_all(decoder_);
  65                 }
  66
  67                 bool Stream::set_metadata_ignore(::FLAC__MetadataType type)
  68                 {
  69                         FLAC__ASSERT(is_valid());
  70                         return (bool)::OggFLAC__stream_decoder_set_metadata_ignore(decoder_, type);
  71                 }
  72
  73                 bool Stream::set_metadata_ignore_application(const FLAC__byte id[4])
  74                 {
  75                         FLAC__ASSERT(is_valid());
  76                         return (bool)::OggFLAC__stream_decoder_set_metadata_ignore_application(decoder_, id);
  77                 }
  78
  79                 bool Stream::set_metadata_ignore_all()
  80                 {
  81                         FLAC__ASSERT(is_valid());
  82                         return (bool)::OggFLAC__stream_decoder_set_metadata_ignore_all(decoder_);
  83                 }
  84
  85                 Stream::State Stream::get_state() const
  86                 {
  87                         FLAC__ASSERT(is_valid());
  88                         return State(::OggFLAC__stream_decoder_get_state(decoder_));
  89                 }
  90
  91                 FLAC::Decoder::Stream::State Stream::get_FLAC_stream_decoder_state() const
  92                 {
  93                         FLAC__ASSERT(is_valid());
  94                         return FLAC::Decoder::Stream::State(::OggFLAC__stream_decoder_get_FLAC_stream_decoder_state(decoder_));
  95                 }
  96
  97                 unsigned Stream::get_channels() const
  98                 {
  99                         FLAC__ASSERT(is_valid());
 100                         return ::OggFLAC__stream_decoder_get_channels(decoder_);
 101                 }
 102
 103                 ::FLAC__ChannelAssignment Stream::get_channel_assignment() const
 104                 {
 105                         FLAC__ASSERT(is_valid());
 106                         return ::OggFLAC__stream_decoder_get_channel_assignment(decoder_);
 107                 }
 108
 109                 unsigned Stream::get_bits_per_sample() const
 110                 {
 111                         FLAC__ASSERT(is_valid());
 112                         return ::OggFLAC__stream_decoder_get_bits_per_sample(decoder_);
 113                 }
 114
 115                 unsigned Stream::get_sample_rate() const
 116                 {
 117                         FLAC__ASSERT(is_valid());
 118                         return ::OggFLAC__stream_decoder_get_sample_rate(decoder_);
 119                 }
 120
 121                 unsigned Stream::get_blocksize() const
 122                 {
 123                         FLAC__ASSERT(is_valid());
 124                         return ::OggFLAC__stream_decoder_get_blocksize(decoder_);
 125                 }
 126
 127                 Stream::State Stream::init()
 128                 {
 129                         FLAC__ASSERT(is_valid());
 130                         ::OggFLAC__stream_decoder_set_read_callback(decoder_, read_callback_);
 131                         ::OggFLAC__stream_decoder_set_write_callback(decoder_, write_callback_);
 132                         ::OggFLAC__stream_decoder_set_metadata_callback(decoder_, metadata_callback_);
 133                         ::OggFLAC__stream_decoder_set_error_callback(decoder_, error_callback_);
 134                         ::OggFLAC__stream_decoder_set_client_data(decoder_, (void*)this);
 135                         return State(::OggFLAC__stream_decoder_init(decoder_));
 136                 }
 137
 138                 void Stream::finish()
 139                 {
 140                         FLAC__ASSERT(is_valid());
 141                         ::OggFLAC__stream_decoder_finish(decoder_);
 142                 }
 143
 144                 bool Stream::flush()
 145                 {
 146                         FLAC__ASSERT(is_valid());
 147                         return (bool)::OggFLAC__stream_decoder_flush(decoder_);
 148                 }
 149
 150                 bool Stream::reset()
 151                 {
 152                         FLAC__ASSERT(is_valid());
 153                         return (bool)::OggFLAC__stream_decoder_reset(decoder_);
 154                 }
 155
 156                 bool Stream::process_single()
 157                 {
 158                         FLAC__ASSERT(is_valid());
 159                         return (bool)::OggFLAC__stream_decoder_process_single(decoder_);
 160                 }
 161
 162                 bool Stream::process_until_end_of_metadata()
 163                 {
 164                         FLAC__ASSERT(is_valid());
 165                         return (bool)::OggFLAC__stream_decoder_process_until_end_of_metadata(decoder_);
 166                 }
 167
 168                 bool Stream::process_until_end_of_stream()
 169                 {
 170                         FLAC__ASSERT(is_valid());
 171                         return (bool)::OggFLAC__stream_decoder_process_until_end_of_stream(decoder_);
 172                 }
 173
 174                 ::FLAC__StreamDecoderReadStatus Stream::read_callback_(const ::OggFLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
 175                 {
 176                         (void)decoder;
 177                         FLAC__ASSERT(0 != client_data);
 178                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 179                         FLAC__ASSERT(0 != instance);
 180                         return instance->read_callback(buffer, bytes);
 181                 }
 182
 183                 ::FLAC__StreamDecoderWriteStatus Stream::write_callback_(const ::OggFLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
 184                 {
 185                         (void)decoder;
 186                         FLAC__ASSERT(0 != client_data);
 187                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 188                         FLAC__ASSERT(0 != instance);
 189                         return instance->write_callback(frame, buffer);
 190                 }
 191
 192                 void Stream::metadata_callback_(const ::OggFLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data)
 193                 {
 194                         (void)decoder;
 195                         FLAC__ASSERT(0 != client_data);
 196                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 197                         FLAC__ASSERT(0 != instance);
 198                         instance->metadata_callback(metadata);
 199                 }
 200
 201                 void Stream::error_callback_(const ::OggFLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data)
 202                 {
 203                         (void)decoder;
 204                         FLAC__ASSERT(0 != client_data);
 205                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 206                         FLAC__ASSERT(0 != instance);
 207                         instance->error_callback(status);
 208                 }
 209
 210         };
 211 };