src/libFLAC++/stream_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                 Stream::Stream():
  44                 decoder_(::FLAC__stream_decoder_new())
  45                 { }
  46
  47                 Stream::~Stream()
  48                 {
  49                         if(0 != decoder_) {
  50                                 ::FLAC__stream_decoder_finish(decoder_);
  51                                 ::FLAC__stream_decoder_delete(decoder_);
  52                         }
  53                 }
  54
  55                 bool Stream::is_valid() const
  56                 {
  57                         return 0 != decoder_;
  58                 }
  59
  60                 bool Stream::set_metadata_respond(::FLAC__MetadataType type)
  61                 {
  62                         FLAC__ASSERT(is_valid());
  63                         return (bool)::FLAC__stream_decoder_set_metadata_respond(decoder_, type);
  64                 }
  65
  66                 bool Stream::set_metadata_respond_application(const FLAC__byte id[4])
  67                 {
  68                         FLAC__ASSERT(is_valid());
  69                         return (bool)::FLAC__stream_decoder_set_metadata_respond_application(decoder_, id);
  70                 }
  71
  72                 bool Stream::set_metadata_respond_all()
  73                 {
  74                         FLAC__ASSERT(is_valid());
  75                         return (bool)::FLAC__stream_decoder_set_metadata_respond_all(decoder_);
  76                 }
  77
  78                 bool Stream::set_metadata_ignore(::FLAC__MetadataType type)
  79                 {
  80                         FLAC__ASSERT(is_valid());
  81                         return (bool)::FLAC__stream_decoder_set_metadata_ignore(decoder_, type);
  82                 }
  83
  84                 bool Stream::set_metadata_ignore_application(const FLAC__byte id[4])
  85                 {
  86                         FLAC__ASSERT(is_valid());
  87                         return (bool)::FLAC__stream_decoder_set_metadata_ignore_application(decoder_, id);
  88                 }
  89
  90                 bool Stream::set_metadata_ignore_all()
  91                 {
  92                         FLAC__ASSERT(is_valid());
  93                         return (bool)::FLAC__stream_decoder_set_metadata_ignore_all(decoder_);
  94                 }
  95
  96                 Stream::State Stream::get_state() const
  97                 {
  98                         FLAC__ASSERT(is_valid());
  99                         return State(::FLAC__stream_decoder_get_state(decoder_));
 100                 }
 101
 102                 unsigned Stream::get_channels() const
 103                 {
 104                         FLAC__ASSERT(is_valid());
 105                         return ::FLAC__stream_decoder_get_channels(decoder_);
 106                 }
 107
 108                 ::FLAC__ChannelAssignment Stream::get_channel_assignment() const
 109                 {
 110                         FLAC__ASSERT(is_valid());
 111                         return ::FLAC__stream_decoder_get_channel_assignment(decoder_);
 112                 }
 113
 114                 unsigned Stream::get_bits_per_sample() const
 115                 {
 116                         FLAC__ASSERT(is_valid());
 117                         return ::FLAC__stream_decoder_get_bits_per_sample(decoder_);
 118                 }
 119
 120                 unsigned Stream::get_sample_rate() const
 121                 {
 122                         FLAC__ASSERT(is_valid());
 123                         return ::FLAC__stream_decoder_get_sample_rate(decoder_);
 124                 }
 125
 126                 unsigned Stream::get_blocksize() const
 127                 {
 128                         FLAC__ASSERT(is_valid());
 129                         return ::FLAC__stream_decoder_get_blocksize(decoder_);
 130                 }
 131
 132                 Stream::State Stream::init()
 133                 {
 134                         FLAC__ASSERT(is_valid());
 135                         ::FLAC__stream_decoder_set_read_callback(decoder_, read_callback_);
 136                         ::FLAC__stream_decoder_set_write_callback(decoder_, write_callback_);
 137                         ::FLAC__stream_decoder_set_metadata_callback(decoder_, metadata_callback_);
 138                         ::FLAC__stream_decoder_set_error_callback(decoder_, error_callback_);
 139                         ::FLAC__stream_decoder_set_client_data(decoder_, (void*)this);
 140                         return State(::FLAC__stream_decoder_init(decoder_));
 141                 }
 142
 143                 void Stream::finish()
 144                 {
 145                         FLAC__ASSERT(is_valid());
 146                         ::FLAC__stream_decoder_finish(decoder_);
 147                 }
 148
 149                 bool Stream::flush()
 150                 {
 151                         FLAC__ASSERT(is_valid());
 152                         return (bool)::FLAC__stream_decoder_flush(decoder_);
 153                 }
 154
 155                 bool Stream::reset()
 156                 {
 157                         FLAC__ASSERT(is_valid());
 158                         return (bool)::FLAC__stream_decoder_reset(decoder_);
 159                 }
 160
 161                 bool Stream::process_single()
 162                 {
 163                         FLAC__ASSERT(is_valid());
 164                         return (bool)::FLAC__stream_decoder_process_single(decoder_);
 165                 }
 166
 167                 bool Stream::process_until_end_of_metadata()
 168                 {
 169                         FLAC__ASSERT(is_valid());
 170                         return (bool)::FLAC__stream_decoder_process_until_end_of_metadata(decoder_);
 171                 }
 172
 173                 bool Stream::process_until_end_of_stream()
 174                 {
 175                         FLAC__ASSERT(is_valid());
 176                         return (bool)::FLAC__stream_decoder_process_until_end_of_stream(decoder_);
 177                 }
 178
 179                 bool Stream::skip_single_frame()
 180                 {
 181                         FLAC__ASSERT(is_valid());
 182                         return (bool)::FLAC__stream_decoder_skip_single_frame(decoder_);
 183                 }
 184
 185                 ::FLAC__StreamDecoderReadStatus Stream::read_callback_(const ::FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
 186                 {
 187                         (void)decoder;
 188                         FLAC__ASSERT(0 != client_data);
 189                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 190                         FLAC__ASSERT(0 != instance);
 191                         return instance->read_callback(buffer, bytes);
 192                 }
 193
 194                 ::FLAC__StreamDecoderWriteStatus Stream::write_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
 195                 {
 196                         (void)decoder;
 197                         FLAC__ASSERT(0 != client_data);
 198                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 199                         FLAC__ASSERT(0 != instance);
 200                         return instance->write_callback(frame, buffer);
 201                 }
 202
 203                 void Stream::metadata_callback_(const ::FLAC__StreamDecoder *decoder, const ::FLAC__StreamMetadata *metadata, void *client_data)
 204                 {
 205                         (void)decoder;
 206                         FLAC__ASSERT(0 != client_data);
 207                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 208                         FLAC__ASSERT(0 != instance);
 209                         instance->metadata_callback(metadata);
 210                 }
 211
 212                 void Stream::error_callback_(const ::FLAC__StreamDecoder *decoder, ::FLAC__StreamDecoderErrorStatus status, void *client_data)
 213                 {
 214                         (void)decoder;
 215                         FLAC__ASSERT(0 != client_data);
 216                         Stream *instance = reinterpret_cast<Stream *>(client_data);
 217                         FLAC__ASSERT(0 != instance);
 218                         instance->error_callback(status);
 219                 }
 220
 221         };
 222 };