src/inputPlugins/_flac_common.h

   1 /* the Music Player Daemon (MPD)
   2  * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
   3  * This project's homepage is: http://www.musicpd.org
   4  *
   5  * Common data structures and functions used by FLAC and OggFLAC
   6  * (c) 2005 by Eric Wong <normalperson@yhbt.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #ifndef _FLAC_COMMON_H
  23 #define _FLAC_COMMON_H
  24
  25 #include "../inputPlugin.h"
  26
  27 #if defined(HAVE_FLAC) || defined(HAVE_OGGFLAC)
  28
  29 #include "../tag.h"
  30 #include "../inputStream.h"
  31 #include "../outputBuffer.h"
  32 #include "../decode.h"
  33 #include <FLAC/export.h>
  34 #if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
  35 #  include <FLAC/seekable_stream_decoder.h>
  36 #  define flac_decoder           FLAC__SeekableStreamDecoder
  37 #  define flac_new()             FLAC__seekable_stream_decoder_new()
  38
  39 #  define flac_ogg_init(a,b,c,d,e,f,g,h,i,j) (0)
  40
  41 #  define flac_get_decode_position(x,y) \
  42                  FLAC__seekable_stream_decoder_get_decode_position(x,y)
  43 #  define flac_get_state(x)      FLAC__seekable_stream_decoder_get_state(x)
  44 #  define flac_process_single(x) FLAC__seekable_stream_decoder_process_single(x)
  45 #  define flac_process_metadata(x) \
  46                  FLAC__seekable_stream_decoder_process_until_end_of_metadata(x)
  47 #  define flac_seek_absolute(x,y) \
  48                  FLAC__seekable_stream_decoder_seek_absolute(x,y)
  49 #  define flac_finish(x)         FLAC__seekable_stream_decoder_finish(x)
  50 #  define flac_delete(x)         FLAC__seekable_stream_decoder_delete(x)
  51
  52 #  define flac_decoder_eof       FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM
  53
  54 typedef unsigned flac_read_status_size_t;
  55 #  define flac_read_status       FLAC__SeekableStreamDecoderReadStatus
  56 #  define flac_read_status_continue \
  57                                  FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK
  58 #  define flac_read_status_eof   FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK
  59 #  define flac_read_status_abort \
  60                                FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR
  61
  62 #  define flac_seek_status       FLAC__SeekableStreamDecoderSeekStatus
  63 #  define flac_seek_status_ok    FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK
  64 #  define flac_seek_status_error FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR
  65
  66 #  define flac_tell_status         FLAC__SeekableStreamDecoderTellStatus
  67 #  define flac_tell_status_ok      FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK
  68 #  define flac_tell_status_error \
  69                                 FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR
  70 #  define flac_tell_status_unsupported \
  71                                 FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR
  72
  73 #  define flac_length_status       FLAC__SeekableStreamDecoderLengthStatus
  74 #  define flac_length_status_ok  FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK
  75 #  define flac_length_status_error \
  76                               FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR
  77 #  define flac_length_status_unsupported \
  78                               FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR
  79
  80 #  ifdef HAVE_OGGFLAC
  81 #    include <OggFLAC/seekable_stream_decoder.h>
  82 #  endif
  83 #else /* FLAC_API_VERSION_CURRENT >= 7 */
  84
  85    /* OggFLAC support is handled by our flac_plugin already, and
  86     * thus we *can* always have it if libFLAC was compiled with it */
  87 #  ifndef HAVE_OGGFLAC
  88 #    define HAVE_OGGFLAC 1
  89 #  endif
  90 #  include "_ogg_common.h"
  91 #  undef HAVE_OGGFLAC /* we don't need this defined anymore */
  92
  93 #  include <FLAC/stream_decoder.h>
  94 #  define flac_decoder           FLAC__StreamDecoder
  95 #  define flac_new()             FLAC__stream_decoder_new()
  96
  97 #  define flac_init(a,b,c,d,e,f,g,h,i,j) \
  98         (FLAC__stream_decoder_init_stream(a,b,c,d,e,f,g,h,i,j) \
  99          == FLAC__STREAM_DECODER_INIT_STATUS_OK)
 100 #  define flac_ogg_init(a,b,c,d,e,f,g,h,i,j) \
 101         (FLAC__stream_decoder_init_ogg_stream(a,b,c,d,e,f,g,h,i,j) \
 102          == FLAC__STREAM_DECODER_INIT_STATUS_OK)
 103
 104 #  define flac_get_decode_position(x,y) \
 105                  FLAC__stream_decoder_get_decode_position(x,y)
 106 #  define flac_get_state(x)      FLAC__stream_decoder_get_state(x)
 107 #  define flac_process_single(x) FLAC__stream_decoder_process_single(x)
 108 #  define flac_process_metadata(x) \
 109                           FLAC__stream_decoder_process_until_end_of_metadata(x)
 110 #  define flac_seek_absolute(x,y)  FLAC__stream_decoder_seek_absolute(x,y)
 111 #  define flac_finish(x)         FLAC__stream_decoder_finish(x)
 112 #  define flac_delete(x)         FLAC__stream_decoder_delete(x)
 113
 114 #  define flac_decoder_eof       FLAC__STREAM_DECODER_END_OF_STREAM
 115
 116 typedef size_t flac_read_status_size_t;
 117 #  define flac_read_status       FLAC__StreamDecoderReadStatus
 118 #  define flac_read_status_continue \
 119                                  FLAC__STREAM_DECODER_READ_STATUS_CONTINUE
 120 #  define flac_read_status_eof   FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM
 121 #  define flac_read_status_abort FLAC__STREAM_DECODER_READ_STATUS_ABORT
 122
 123 #  define flac_seek_status       FLAC__StreamDecoderSeekStatus
 124 #  define flac_seek_status_ok    FLAC__STREAM_DECODER_SEEK_STATUS_OK
 125 #  define flac_seek_status_error FLAC__STREAM_DECODER_SEEK_STATUS_ERROR
 126 #  define flac_seek_status_unsupported \
 127                                  FLAC__STREAM_DECODER_SEEK_STATUS_UNSUPPORTED
 128
 129 #  define flac_tell_status         FLAC__StreamDecoderTellStatus
 130 #  define flac_tell_status_ok      FLAC__STREAM_DECODER_TELL_STATUS_OK
 131 #  define flac_tell_status_error   FLAC__STREAM_DECODER_TELL_STATUS_ERROR
 132 #  define flac_tell_status_unsupported \
 133                                    FLAC__STREAM_DECODER_TELL_STATUS_UNSUPPORTED
 134
 135 #  define flac_length_status       FLAC__StreamDecoderLengthStatus
 136 #  define flac_length_status_ok    FLAC__STREAM_DECODER_LENGTH_STATUS_OK
 137 #  define flac_length_status_error FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR
 138 #  define flac_length_status_unsupported \
 139                                  FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED
 140
 141 #endif /* FLAC_API_VERSION_CURRENT >= 7 */
 142
 143 #include <FLAC/metadata.h>
 144
 145 #define FLAC_CHUNK_SIZE 4080
 146
 147 typedef struct {
 148         unsigned char chunk[FLAC_CHUNK_SIZE];
 149         int chunk_length;
 150         float time;
 151         int bitRate;
 152         FLAC__uint64 position;
 153         OutputBuffer *cb;
 154         DecoderControl *dc;
 155         InputStream *inStream;
 156         ReplayGainInfo *replayGainInfo;
 157         MpdTag *tag;
 158 } FlacData;
 159
 160 /* initializes a given FlacData struct */
 161 void init_FlacData(FlacData * data, OutputBuffer * cb,
 162                    DecoderControl * dc, InputStream * inStream);
 163 void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
 164                              FlacData * data);
 165 void flac_error_common_cb(const char *plugin,
 166                           FLAC__StreamDecoderErrorStatus status,
 167                           FlacData * data);
 168
 169 MpdTag *copyVorbisCommentBlockToMpdTag(const FLAC__StreamMetadata * block,
 170                                        MpdTag * tag);
 171
 172 /* keep this inlined, this is just macro but prettier :) */
 173 static inline int flacSendChunk(FlacData * data)
 174 {
 175         if (sendDataToOutputBuffer(data->cb, NULL, data->dc, 1, data->chunk,
 176                                    data->chunk_length, data->time,
 177                                    data->bitRate,
 178                                    data->replayGainInfo) ==
 179             OUTPUT_BUFFER_DC_STOP)
 180                 return -1;
 181
 182         return 0;
 183 }
 184
 185 #endif /* HAVE_FLAC || HAVE_OGGFLAC */
 186
 187 #endif /* _FLAC_COMMON_H */