src/outputBuffer.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  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef OUTPUT_BUFFER_H
  20 #define OUTPUT_BUFFER_H
  21
  22 #include "pcm_utils.h"
  23 #include "mpd_types.h"
  24 #include "decode.h"
  25 #include "audio.h"
  26 #include "inputStream.h"
  27 #include "metadataChunk.h"
  28 #include "replayGain.h"
  29
  30 #define OUTPUT_BUFFER_DC_STOP   -1
  31 #define OUTPUT_BUFFER_DC_SEEK   -2
  32
  33 #define BUFFERED_METACHUNKS     25
  34
  35 typedef struct _OutputBuffer {
  36         char *volatile chunks;
  37         mpd_uint16 *volatile chunkSize;
  38         mpd_uint16 *volatile bitRate;
  39         float *volatile times;
  40         mpd_sint16 volatile begin;
  41         mpd_sint16 volatile end;
  42         AudioFormat audioFormat;
  43         ConvState convState;
  44         MetadataChunk metadataChunks[BUFFERED_METACHUNKS];
  45         mpd_sint8 metaChunkSet[BUFFERED_METACHUNKS];
  46         mpd_sint8 *volatile metaChunk;
  47         volatile mpd_sint8 acceptMetadata;
  48 } OutputBuffer;
  49
  50 void clearOutputBuffer(OutputBuffer * cb);
  51
  52 void flushOutputBuffer(OutputBuffer * cb);
  53
  54 /* we send inStream for buffering the inputStream while waiting to
  55    send the next chunk */
  56 int sendDataToOutputBuffer(OutputBuffer * cb,
  57                            InputStream * inStream,
  58                            DecoderControl * dc,
  59                            int seekable,
  60                            void *data,
  61                            long datalen,
  62                            float time,
  63                            mpd_uint16 bitRate, ReplayGainInfo * replayGainInfo);
  64
  65 int copyMpdTagToOutputBuffer(OutputBuffer * cb, MpdTag * tag);
  66
  67 void clearAllMetaChunkSets(OutputBuffer * cb);
  68
  69 #endif