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Diffstat (limited to '')
-rw-r--r-- | src/DecoderInternal.cxx | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/DecoderInternal.cxx b/src/DecoderInternal.cxx new file mode 100644 index 000000000..e390fdfd7 --- /dev/null +++ b/src/DecoderInternal.cxx @@ -0,0 +1,111 @@ +/* + * 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. + */ + +#include "config.h" +#include "DecoderInternal.hxx" +#include "DecoderControl.hxx" +#include "MusicPipe.hxx" +#include "MusicBuffer.hxx" +#include "MusicChunk.hxx" +#include "tag.h" + +#include <assert.h> + +decoder::~decoder() +{ + /* caller must flush the chunk */ + assert(chunk == nullptr); + + if (song_tag != nullptr) + tag_free(song_tag); + + if (stream_tag != nullptr) + tag_free(stream_tag); + + if (decoder_tag != nullptr) + tag_free(decoder_tag); +} + +/** + * All chunks are full of decoded data; wait for the player to free + * one. + */ +static enum decoder_command +need_chunks(struct decoder_control *dc, bool do_wait) +{ + if (dc->command == DECODE_COMMAND_STOP || + dc->command == DECODE_COMMAND_SEEK) + return dc->command; + + if (do_wait) { + dc->Wait(); + dc->client_cond.signal(); + + return dc->command; + } + + return DECODE_COMMAND_NONE; +} + +struct music_chunk * +decoder_get_chunk(struct decoder *decoder) +{ + struct decoder_control *dc = decoder->dc; + enum decoder_command cmd; + + assert(decoder != NULL); + + if (decoder->chunk != NULL) + return decoder->chunk; + + do { + decoder->chunk = music_buffer_allocate(dc->buffer); + if (decoder->chunk != NULL) { + decoder->chunk->replay_gain_serial = + decoder->replay_gain_serial; + if (decoder->replay_gain_serial != 0) + decoder->chunk->replay_gain_info = + decoder->replay_gain_info; + + return decoder->chunk; + } + + dc->Lock(); + cmd = need_chunks(dc, true); + dc->Unlock(); + } while (cmd == DECODE_COMMAND_NONE); + + return NULL; +} + +void +decoder_flush_chunk(struct decoder *decoder) +{ + struct decoder_control *dc = decoder->dc; + + assert(decoder != NULL); + assert(decoder->chunk != NULL); + + if (decoder->chunk->IsEmpty()) + music_buffer_return(dc->buffer, decoder->chunk); + else + music_pipe_push(dc->pipe, decoder->chunk); + + decoder->chunk = NULL; +} |