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Diffstat (limited to '')
-rw-r--r-- | src/DecoderInternal.hxx | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/DecoderInternal.hxx b/src/DecoderInternal.hxx new file mode 100644 index 000000000..3423e3f95 --- /dev/null +++ b/src/DecoderInternal.hxx @@ -0,0 +1,114 @@ +/* + * Copyright (C) 2003-2013 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_DECODER_INTERNAL_HXX +#define MPD_DECODER_INTERNAL_HXX + +#include "decoder_command.h" +#include "PcmConvert.hxx" +#include "replay_gain_info.h" + +struct input_stream; + +struct decoder { + struct decoder_control *dc; + + PcmConvert conv_state; + + /** + * The time stamp of the next data chunk, in seconds. + */ + double timestamp; + + /** + * Is the initial seek (to the start position of the sub-song) + * pending, or has it been performed already? + */ + bool initial_seek_pending; + + /** + * Is the initial seek currently running? During this time, + * the decoder command is SEEK. This flag is set by + * decoder_get_virtual_command(), when the virtual SEEK + * command is generated for the first time. + */ + bool initial_seek_running; + + /** + * This flag is set by decoder_seek_where(), and checked by + * decoder_command_finished(). It is used to clean up after + * seeking. + */ + bool seeking; + + /** + * The tag from the song object. This is only used for local + * files, because we expect the stream server to send us a new + * tag each time we play it. + */ + struct tag *song_tag; + + /** the last tag received from the stream */ + struct tag *stream_tag; + + /** the last tag received from the decoder plugin */ + struct tag *decoder_tag; + + /** the chunk currently being written to */ + struct music_chunk *chunk; + + struct replay_gain_info replay_gain_info; + + /** + * A positive serial number for checking if replay gain info + * has changed since the last check. + */ + unsigned replay_gain_serial; + + decoder(decoder_control *_dc, bool _initial_seek_pending, + struct tag *_tag) + :dc(_dc), + timestamp(0), + initial_seek_pending(_initial_seek_pending), + initial_seek_running(false), + seeking(false), + song_tag(_tag), stream_tag(nullptr), decoder_tag(nullptr), + chunk(nullptr), + replay_gain_serial(0) { + } + + ~decoder(); +}; + +/** + * Returns the current chunk the decoder writes to, or allocates a new + * chunk if there is none. + * + * @return the chunk, or NULL if we have received a decoder command + */ +struct music_chunk * +decoder_get_chunk(struct decoder *decoder); + +/** + * Flushes the current chunk. + */ +void +decoder_flush_chunk(struct decoder *decoder); + +#endif |