118 lines
3.0 KiB
C++
118 lines
3.0 KiB
C++
/*
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* Copyright (C) 2003-2013 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_DECODER_INTERNAL_HXX
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#define MPD_DECODER_INTERNAL_HXX
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#include "DecoderCommand.hxx"
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#include "pcm/PcmConvert.hxx"
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#include "ReplayGainInfo.hxx"
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struct DecoderControl;
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struct InputStream;
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struct Tag;
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struct Decoder {
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DecoderControl &dc;
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PcmConvert conv_state;
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/**
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* The time stamp of the next data chunk, in seconds.
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*/
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double timestamp;
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/**
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* Is the initial seek (to the start position of the sub-song)
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* pending, or has it been performed already?
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*/
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bool initial_seek_pending;
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/**
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* Is the initial seek currently running? During this time,
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* the decoder command is SEEK. This flag is set by
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* decoder_get_virtual_command(), when the virtual SEEK
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* command is generated for the first time.
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*/
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bool initial_seek_running;
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/**
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* This flag is set by decoder_seek_where(), and checked by
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* decoder_command_finished(). It is used to clean up after
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* seeking.
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*/
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bool seeking;
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/**
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* The tag from the song object. This is only used for local
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* files, because we expect the stream server to send us a new
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* tag each time we play it.
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*/
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Tag *song_tag;
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/** the last tag received from the stream */
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Tag *stream_tag;
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/** the last tag received from the decoder plugin */
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Tag *decoder_tag;
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/** the chunk currently being written to */
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struct music_chunk *chunk;
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ReplayGainInfo replay_gain_info;
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/**
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* A positive serial number for checking if replay gain info
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* has changed since the last check.
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*/
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unsigned replay_gain_serial;
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Decoder(DecoderControl &_dc, bool _initial_seek_pending, Tag *_tag)
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:dc(_dc),
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timestamp(0),
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initial_seek_pending(_initial_seek_pending),
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initial_seek_running(false),
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seeking(false),
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song_tag(_tag), stream_tag(nullptr), decoder_tag(nullptr),
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chunk(nullptr),
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replay_gain_serial(0) {
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}
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~Decoder();
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};
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/**
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* Returns the current chunk the decoder writes to, or allocates a new
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* chunk if there is none.
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*
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* @return the chunk, or NULL if we have received a decoder command
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*/
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struct music_chunk *
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decoder_get_chunk(Decoder &decoder);
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/**
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* Flushes the current chunk.
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*
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* Caller must not lock the #DecoderControl object.
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*/
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void
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decoder_flush_chunk(Decoder &decoder);
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#endif
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