src/libFLAC++/stream_decoder.cpp

   1 /* libFLAC++ - Free Lossless Audio Codec library
   2  * Copyright (C) 2002,2003  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 namespace FLAC {
  36         namespace Decoder {
  37
  38                 Stream::Stream():
  39                 decoder_(::FLAC__stream_decoder_new())
  40                 { }
  41
  42                 Stream::~Stream()
  43                 {
  44                         if(0 != decoder_) {
  45                                 ::FLAC__stream_decoder_finish(decoder_);
  46                                 ::FLAC__stream_decoder_delete(decoder_);
  47                         }
  48                 }
  49
  50                 bool Stream::is_valid() const
  51                 {
  52                         return 0 != decoder_;
  53                 }
  54
  55                 bool Stream::set_metadata_respond(::FLAC__MetadataType type)
  56                 {
  57                         FLAC__ASSERT(is_valid());
  58                         return (bool)::FLAC__stream_decoder_set_metadata_respond(decoder_, type);
  59                 }
  60
  61                 bool Stream::set_metadata_respond_application(const FLAC__byte id[4])
  62                 {
  63                         FLAC__ASSERT(is_valid());
  64                         return (bool)::FLAC__stream_decoder_set_metadata_respond_application(decoder_, id);
  65                 }
  66
  67                 bool Stream::set_metadata_respond_all()
  68                 {
  69                         FLAC__ASSERT(is_valid());
  70                         return (bool)::FLAC__stream_decoder_set_metadata_respond_all(decoder_);
  71                 }
  72
  73                 bool Stream::set_metadata_ignore(::FLAC__MetadataType type)
  74                 {
  75                         FLAC__ASSERT(is_valid());
  76                         return (bool)::FLAC__stream_decoder_set_metadata_ignore(decoder_, type);
  77                 }
  78
  79                 bool Stream::set_metadata_ignore_application(const FLAC__byte id[4])
  80                 {
  81                         FLAC__ASSERT(is_valid());
  82                         return (bool)::FLAC__stream_decoder_set_metadata_ignore_application(decoder_, id);
  83                 }
  84
  85                 bool Stream::set_metadata_ignore_all()
  86                 {
  87                         FLAC__ASSERT(is_valid());
  88                         return (bool)::FLAC__stream_decoder_set_metadata_ignore_all(decoder_);
  89                 }
  90
  91                 Stream::State Stream::get_state() const
  92                 {
  93                         FLAC__ASSERT(is_valid());
  94                         return State(::FLAC__stream_decoder_get_state(decoder_));
  95                 }
  96
  97                 unsigned Stream::get_channels() const
  98                 {
  99                         FLAC__ASSERT(is_valid());
 100                         return ::FLAC__stream_decoder_get_channels(decoder_);
 101                 }
 102
 103                 ::FLAC__ChannelAssignment Stream::get_channel_assignment() const
 104                 {
 105                         FLAC__ASSERT(is_valid());
 106                         return ::FLAC__stream_decoder_get_channel_assignment(decoder_);
 107                 }
 108
 109                 unsigned Stream::get_bits_per_sample() const
 110                 {
 111                         FLAC__ASSERT(is_valid());
 112                         return ::FLAC__stream_decoder_get_bits_per_sample(decoder_);
 113                 }
 114
 115                 unsigned Stream::get_sample_rate() const
 116                 {
 117                         FLAC__ASSERT(is_valid());
 118                         return ::FLAC__stream_decoder_get_sample_rate(decoder_);
 119                 }
 120
 121                 unsigned Stream::get_blocksize() const
 122                 {
 123                         FLAC__ASSERT(is_valid());
 124                         return ::FLAC__stream_decoder_get_blocksize(decoder_);
 125                 }
 126
 127                 Stream::State Stream::init()
 128                 {
 129                         FLAC__ASSERT(is_valid());
 130                         ::FLAC__stream_decoder_set_read_callback(decoder_, read_callback_);
 131                         ::FLAC__stream_decoder_set_write_callback(decoder_, write_callback_);
 132                         ::FLAC__stream_decoder_set_metadata_callback(decoder_, metadata_callback_);
 133                         ::FLAC__stream_decoder_set_error_callback(decoder_, error_callback_);
 134                         ::FLAC__stream_decoder_set_client_data(decoder_, (void*)this);
 135                         return State(::FLAC__stream_decoder_init(decoder_));
 136                 }
 137
 138                 void Stream::finish()
 139                 {
 140                         FLAC__ASSERT(is_valid());
 141                         ::FLAC__stream_decoder_finish(decoder_);
 142                 }
 143
 144                 bool Stream::flush()
 145                 {
 146                         FLAC__ASSERT(is_valid());
 147                         return (bool)::FLAC__stream_decoder_flush(decoder_);
 148                 }
 149
 150                 bool Stream::reset()
 151                 {
 152                         FLAC__ASSERT(is_valid());
 153                         return (bool)::FLAC__stream_decoder_reset(decoder_);
 154                 }
 155
 156                 bool Stream::process_single()
 157                 {
 158                         FLAC__ASSERT(is_valid());
 159                         return (bool)::FLAC__stream_decoder_process_single(decoder_);
 160                 }
 161
 162                 bool Stream::process_until_end_of_metadata()
 163                 {
 164                         FLAC__ASSERT(is_valid());
 165                         return (bool)::FLAC__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)::FLAC__stream_decoder_process_until_end_of_stream(decoder_);
 172                 }
 173
 174                 ::FLAC__StreamDecoderReadStatus Stream::read_callback_(const ::FLAC__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 ::FLAC__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 ::FLAC__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 ::FLAC__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 };