2009-03-13 18:43:16 +01:00
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/*
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2016-02-26 17:54:05 +01:00
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* Copyright 2003-2016 The Music Player Daemon Project
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2009-03-13 18:43:16 +01:00
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* http://www.musicpd.org
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2004-02-24 00:41:20 +01:00
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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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2009-03-13 18:43:16 +01:00
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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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2004-02-24 00:41:20 +01:00
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*/
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2009-11-12 09:12:38 +01:00
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#include "config.h"
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2013-01-02 20:36:28 +01:00
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#include "DecoderThread.hxx"
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2013-01-04 08:41:16 +01:00
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#include "DecoderControl.hxx"
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#include "DecoderInternal.hxx"
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2013-07-28 13:18:48 +02:00
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#include "DecoderError.hxx"
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#include "DecoderPlugin.hxx"
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2014-01-07 21:39:47 +01:00
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#include "DetachedSong.hxx"
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2014-09-07 21:31:10 +02:00
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#include "MusicPipe.hxx"
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2013-10-17 23:23:25 +02:00
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#include "fs/Traits.hxx"
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2013-10-17 21:59:35 +02:00
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#include "fs/AllocatedPath.hxx"
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2013-07-28 13:18:48 +02:00
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#include "DecoderAPI.hxx"
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2014-01-24 16:18:21 +01:00
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#include "input/InputStream.hxx"
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2014-10-02 21:48:52 +02:00
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#include "input/LocalOpen.hxx"
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2013-01-30 17:18:48 +01:00
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#include "DecoderList.hxx"
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2016-06-10 22:24:13 +02:00
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#include "util/MimeType.hxx"
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2013-04-08 23:30:21 +02:00
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#include "util/UriUtil.hxx"
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2013-08-10 18:02:44 +02:00
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#include "util/Error.hxx"
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2016-09-08 17:14:11 +02:00
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#include "util/RuntimeError.hxx"
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2013-09-27 22:31:24 +02:00
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#include "util/Domain.hxx"
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2016-09-08 20:41:44 +02:00
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#include "util/ScopeExit.hxx"
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2014-01-23 10:07:14 +01:00
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#include "thread/Name.hxx"
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2013-09-04 23:46:20 +02:00
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#include "tag/ApeReplayGain.hxx"
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2013-09-27 22:31:24 +02:00
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#include "Log.hxx"
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2004-02-24 00:41:20 +01:00
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2016-05-13 12:54:41 +02:00
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#include <stdexcept>
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2013-11-09 09:54:12 +01:00
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#include <functional>
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2015-12-31 13:01:03 +01:00
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#include <memory>
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2013-11-09 09:54:12 +01:00
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2013-09-27 22:31:24 +02:00
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static constexpr Domain decoder_thread_domain("decoder_thread");
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2010-03-21 18:21:47 +01:00
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2009-11-07 15:35:50 +01:00
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/**
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2015-01-31 22:17:15 +01:00
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* Opens the input stream with InputStream::Open(), and waits until
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2016-09-08 20:50:40 +02:00
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* the stream gets ready.
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2009-11-07 15:35:50 +01:00
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*
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* Unlock the decoder before calling this function.
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*/
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2016-02-23 10:58:16 +01:00
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static InputStreamPtr
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2016-09-08 20:48:04 +02:00
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decoder_input_stream_open(DecoderControl &dc, const char *uri)
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2009-11-07 15:35:50 +01:00
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{
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2016-09-09 15:37:06 +02:00
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auto is = InputStream::Open(uri, dc.mutex, dc.cond);
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2009-11-07 15:35:50 +01:00
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/* wait for the input stream to become ready; its metadata
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will be available then */
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2015-12-31 12:11:14 +01:00
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const ScopeLock protect(dc.mutex);
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2011-09-14 21:46:41 +02:00
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2013-09-05 00:06:31 +02:00
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is->Update();
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2016-04-21 13:14:40 +02:00
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while (!is->IsReady()) {
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if (dc.command == DecoderCommand::STOP)
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2016-09-08 20:50:40 +02:00
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throw StopDecoder();
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2016-04-21 13:14:40 +02:00
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2013-10-19 18:48:38 +02:00
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dc.Wait();
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2009-11-07 15:35:50 +01:00
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2013-09-05 00:06:31 +02:00
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is->Update();
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2009-11-07 15:35:50 +01:00
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}
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2016-09-09 18:47:42 +02:00
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is->Check();
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2011-09-14 21:46:41 +02:00
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2009-12-30 23:27:37 +01:00
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return is;
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2009-11-07 15:35:50 +01:00
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}
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2016-02-23 10:58:16 +01:00
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static InputStreamPtr
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2016-09-08 20:48:04 +02:00
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decoder_input_stream_open(DecoderControl &dc, Path path)
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2014-10-02 21:48:52 +02:00
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{
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2016-09-09 15:37:06 +02:00
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auto is = OpenLocalInputStream(path, dc.mutex, dc.cond);
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2014-10-02 21:48:52 +02:00
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assert(is->IsReady());
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return is;
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}
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2015-12-31 12:24:57 +01:00
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/**
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* Decode a stream with the given decoder plugin.
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*
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* Caller holds DecoderControl::mutex.
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*/
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2008-11-10 15:02:38 +01:00
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static bool
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2013-10-21 20:31:34 +02:00
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decoder_stream_decode(const DecoderPlugin &plugin,
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2013-10-21 21:12:37 +02:00
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Decoder &decoder,
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2013-10-23 22:08:59 +02:00
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InputStream &input_stream)
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2008-11-10 15:02:38 +01:00
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{
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2013-10-19 18:48:38 +02:00
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assert(plugin.stream_decode != nullptr);
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2013-10-21 21:12:37 +02:00
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assert(decoder.stream_tag == nullptr);
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assert(decoder.decoder_tag == nullptr);
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2014-05-11 15:34:48 +02:00
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assert(input_stream.IsReady());
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2013-10-21 21:12:37 +02:00
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assert(decoder.dc.state == DecoderState::START);
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2008-11-10 15:02:38 +01:00
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2013-10-19 18:48:38 +02:00
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FormatDebug(decoder_thread_domain, "probing plugin %s", plugin.name);
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2012-05-29 22:52:50 +02:00
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2013-10-21 21:12:37 +02:00
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if (decoder.dc.command == DecoderCommand::STOP)
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2016-09-08 20:50:40 +02:00
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throw StopDecoder();
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2009-11-07 15:37:18 +01:00
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2008-11-10 15:02:47 +01:00
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/* rewind the stream, so each plugin gets a fresh start */
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2016-09-09 18:47:42 +02:00
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try {
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input_stream.Rewind();
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} catch (const std::runtime_error &) {
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}
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2008-11-10 15:02:47 +01:00
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2015-12-30 06:16:30 +01:00
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{
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const ScopeUnlock unlock(decoder.dc.mutex);
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2011-09-14 21:46:41 +02:00
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2015-12-30 06:16:30 +01:00
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FormatThreadName("decoder:%s", plugin.name);
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2014-01-23 10:07:14 +01:00
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2015-12-30 06:16:30 +01:00
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plugin.StreamDecode(decoder, input_stream);
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2008-11-10 15:02:38 +01:00
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2015-12-30 06:16:30 +01:00
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SetThreadName("decoder");
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}
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2009-08-13 23:33:46 +02:00
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2013-10-21 21:12:37 +02:00
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assert(decoder.dc.state == DecoderState::START ||
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decoder.dc.state == DecoderState::DECODE);
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2008-11-10 15:02:38 +01:00
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2013-10-21 21:12:37 +02:00
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return decoder.dc.state != DecoderState::START;
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2008-11-10 15:02:38 +01:00
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}
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2015-12-31 12:24:57 +01:00
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/**
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* Decode a file with the given decoder plugin.
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*
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* Caller holds DecoderControl::mutex.
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*/
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2008-11-10 15:02:38 +01:00
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static bool
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2013-10-21 20:31:34 +02:00
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decoder_file_decode(const DecoderPlugin &plugin,
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2014-02-07 18:52:19 +01:00
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Decoder &decoder, Path path)
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2008-11-10 15:02:38 +01:00
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{
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2013-10-19 18:48:38 +02:00
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assert(plugin.file_decode != nullptr);
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2013-10-21 21:12:37 +02:00
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assert(decoder.stream_tag == nullptr);
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assert(decoder.decoder_tag == nullptr);
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2014-02-07 18:52:19 +01:00
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assert(!path.IsNull());
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assert(path.IsAbsolute());
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2013-10-21 21:12:37 +02:00
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assert(decoder.dc.state == DecoderState::START);
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2008-11-10 15:02:38 +01:00
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2013-10-19 18:48:38 +02:00
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FormatDebug(decoder_thread_domain, "probing plugin %s", plugin.name);
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2012-05-29 22:52:50 +02:00
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2013-10-21 21:12:37 +02:00
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if (decoder.dc.command == DecoderCommand::STOP)
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2016-09-08 20:50:40 +02:00
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throw StopDecoder();
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2009-11-07 15:37:18 +01:00
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2015-12-30 06:16:30 +01:00
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{
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const ScopeUnlock unlock(decoder.dc.mutex);
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2009-08-13 23:33:46 +02:00
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2015-12-30 06:16:30 +01:00
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FormatThreadName("decoder:%s", plugin.name);
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2014-01-23 10:07:14 +01:00
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2015-12-30 06:16:30 +01:00
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plugin.FileDecode(decoder, path);
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2008-11-10 15:02:38 +01:00
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2015-12-30 06:16:30 +01:00
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SetThreadName("decoder");
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}
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2009-08-13 23:33:46 +02:00
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2013-10-21 21:12:37 +02:00
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assert(decoder.dc.state == DecoderState::START ||
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decoder.dc.state == DecoderState::DECODE);
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2008-11-10 15:02:38 +01:00
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2013-10-21 21:12:37 +02:00
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return decoder.dc.state != DecoderState::START;
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2008-11-10 15:02:38 +01:00
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}
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2013-10-21 22:14:08 +02:00
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gcc_pure
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2009-11-07 14:57:46 +01:00
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static bool
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2013-10-23 22:08:59 +02:00
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decoder_check_plugin_mime(const DecoderPlugin &plugin, const InputStream &is)
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2009-11-07 14:57:46 +01:00
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{
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2013-10-21 22:14:08 +02:00
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assert(plugin.stream_decode != nullptr);
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2010-01-17 16:47:04 +01:00
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2014-05-11 15:34:48 +02:00
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const char *mime_type = is.GetMimeType();
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2016-06-10 22:24:13 +02:00
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return mime_type != nullptr &&
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plugin.SupportsMimeType(GetMimeTypeBase(mime_type).c_str());
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2013-10-21 22:14:08 +02:00
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}
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2009-11-07 14:57:46 +01:00
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2013-10-21 22:14:08 +02:00
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gcc_pure
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static bool
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decoder_check_plugin_suffix(const DecoderPlugin &plugin, const char *suffix)
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{
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assert(plugin.stream_decode != nullptr);
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2010-01-17 16:47:04 +01:00
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2013-10-21 22:14:08 +02:00
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return suffix != nullptr && plugin.SupportsSuffix(suffix);
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2009-11-07 14:57:46 +01:00
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}
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2013-10-21 22:14:08 +02:00
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gcc_pure
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2009-11-07 14:57:46 +01:00
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static bool
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2013-10-23 22:08:59 +02:00
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decoder_check_plugin(const DecoderPlugin &plugin, const InputStream &is,
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2013-10-21 22:14:08 +02:00
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const char *suffix)
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2009-11-07 14:57:46 +01:00
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{
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2013-10-21 22:14:08 +02:00
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return plugin.stream_decode != nullptr &&
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(decoder_check_plugin_mime(plugin, is) ||
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decoder_check_plugin_suffix(plugin, suffix));
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}
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2009-11-07 14:57:46 +01:00
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2013-10-21 22:14:08 +02:00
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static bool
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2013-10-23 22:08:59 +02:00
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decoder_run_stream_plugin(Decoder &decoder, InputStream &is,
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2013-10-21 22:14:08 +02:00
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const char *suffix,
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const DecoderPlugin &plugin,
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bool &tried_r)
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{
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if (!decoder_check_plugin(plugin, is, suffix))
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2009-11-07 14:57:46 +01:00
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return false;
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2016-09-08 20:31:06 +02:00
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decoder.error = std::exception_ptr();
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2016-02-26 17:30:24 +01:00
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2013-10-21 22:14:08 +02:00
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tried_r = true;
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2013-10-23 22:08:59 +02:00
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return decoder_stream_decode(plugin, decoder, is);
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2013-10-21 22:14:08 +02:00
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}
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2009-11-07 14:57:46 +01:00
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2013-10-21 22:14:08 +02:00
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static bool
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2013-10-23 22:08:59 +02:00
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decoder_run_stream_locked(Decoder &decoder, InputStream &is,
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2013-10-21 22:14:08 +02:00
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const char *uri, bool &tried_r)
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{
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2014-11-01 13:20:39 +01:00
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UriSuffixBuffer suffix_buffer;
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const char *const suffix = uri_get_suffix(uri, suffix_buffer);
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2010-01-17 16:47:04 +01:00
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2013-10-21 22:14:08 +02:00
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using namespace std::placeholders;
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const auto f = std::bind(decoder_run_stream_plugin,
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std::ref(decoder), std::ref(is), suffix,
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_1, std::ref(tried_r));
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return decoder_plugins_try(f);
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2009-11-07 14:57:46 +01:00
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}
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/**
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* Try decoding a stream, using the fallback plugin.
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*/
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static bool
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2013-10-23 22:08:59 +02:00
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decoder_run_stream_fallback(Decoder &decoder, InputStream &is)
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2009-11-07 14:57:46 +01:00
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{
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2013-10-21 20:31:34 +02:00
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const struct DecoderPlugin *plugin;
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2009-11-07 14:57:46 +01:00
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2016-03-30 00:58:48 +02:00
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#ifdef HAVE_FFMPEG
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plugin = decoder_plugin_from_name("ffmpeg");
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#else
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2009-11-07 14:57:46 +01:00
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plugin = decoder_plugin_from_name("mad");
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2016-03-30 00:58:48 +02:00
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#endif
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2013-10-19 18:19:03 +02:00
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return plugin != nullptr && plugin->stream_decode != nullptr &&
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2013-10-19 18:48:38 +02:00
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decoder_stream_decode(*plugin, decoder, is);
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2009-11-07 14:57:46 +01:00
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}
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2016-02-23 10:57:03 +01:00
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/**
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* Attempt to load replay gain data, and pass it to
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* decoder_replay_gain().
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*/
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static void
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LoadReplayGain(Decoder &decoder, InputStream &is)
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{
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ReplayGainInfo info;
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if (replay_gain_ape_read(is, info))
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decoder_replay_gain(decoder, &info);
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}
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2009-11-07 14:57:46 +01:00
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/**
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* Try decoding a stream.
|
2015-12-31 12:24:57 +01:00
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*
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2015-12-31 12:42:02 +01:00
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* DecoderControl::mutex is not locked by caller.
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2009-11-07 14:57:46 +01:00
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*/
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static bool
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2013-10-21 21:12:37 +02:00
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decoder_run_stream(Decoder &decoder, const char *uri)
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2009-11-07 14:57:46 +01:00
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{
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2013-10-28 10:09:21 +01:00
|
|
|
DecoderControl &dc = decoder.dc;
|
2009-11-07 15:10:12 +01:00
|
|
|
|
2016-09-08 20:48:04 +02:00
|
|
|
auto input_stream = decoder_input_stream_open(dc, uri);
|
|
|
|
assert(input_stream);
|
2009-11-07 15:10:12 +01:00
|
|
|
|
2016-02-23 10:57:03 +01:00
|
|
|
LoadReplayGain(decoder, *input_stream);
|
|
|
|
|
2015-12-31 13:01:49 +01:00
|
|
|
const ScopeLock protect(dc.mutex);
|
2009-11-07 15:10:12 +01:00
|
|
|
|
2013-10-21 22:14:08 +02:00
|
|
|
bool tried = false;
|
2015-12-31 13:01:49 +01:00
|
|
|
return dc.command == DecoderCommand::STOP ||
|
2013-10-21 22:14:08 +02:00
|
|
|
decoder_run_stream_locked(decoder, *input_stream, uri,
|
|
|
|
tried) ||
|
2009-11-07 14:57:46 +01:00
|
|
|
/* fallback to mp3: this is needed for bastard streams
|
|
|
|
that don't have a suffix or set the mimeType */
|
2013-10-21 22:14:08 +02:00
|
|
|
(!tried &&
|
2013-10-23 22:08:59 +02:00
|
|
|
decoder_run_stream_fallback(decoder, *input_stream));
|
2009-11-07 14:57:46 +01:00
|
|
|
}
|
|
|
|
|
2015-12-31 12:24:57 +01:00
|
|
|
/**
|
|
|
|
* Decode a file with the given decoder plugin.
|
|
|
|
*
|
2015-12-31 12:47:56 +01:00
|
|
|
* DecoderControl::mutex is not locked by caller.
|
2015-12-31 12:24:57 +01:00
|
|
|
*/
|
2009-11-07 14:57:46 +01:00
|
|
|
static bool
|
2014-02-07 18:43:49 +01:00
|
|
|
TryDecoderFile(Decoder &decoder, Path path_fs, const char *suffix,
|
2016-02-23 11:07:02 +01:00
|
|
|
InputStream &input_stream,
|
2013-12-29 16:51:18 +01:00
|
|
|
const DecoderPlugin &plugin)
|
2009-11-07 14:57:46 +01:00
|
|
|
{
|
2013-12-29 16:51:18 +01:00
|
|
|
if (!plugin.SupportsSuffix(suffix))
|
|
|
|
return false;
|
|
|
|
|
2016-09-08 20:31:06 +02:00
|
|
|
decoder.error = std::exception_ptr();
|
2016-02-26 17:30:24 +01:00
|
|
|
|
2013-10-28 10:09:21 +01:00
|
|
|
DecoderControl &dc = decoder.dc;
|
2009-11-07 14:57:46 +01:00
|
|
|
|
2013-12-29 16:51:18 +01:00
|
|
|
if (plugin.file_decode != nullptr) {
|
2015-12-31 12:52:28 +01:00
|
|
|
const ScopeLock protect(dc.mutex);
|
|
|
|
return decoder_file_decode(plugin, decoder, path_fs);
|
2013-12-29 16:51:18 +01:00
|
|
|
} else if (plugin.stream_decode != nullptr) {
|
2015-12-31 13:12:28 +01:00
|
|
|
const ScopeLock protect(dc.mutex);
|
2016-02-23 11:07:02 +01:00
|
|
|
return decoder_stream_decode(plugin, decoder, input_stream);
|
2015-12-31 12:47:56 +01:00
|
|
|
} else
|
|
|
|
return false;
|
2013-12-29 16:51:18 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Try decoding a file.
|
2015-12-31 12:24:57 +01:00
|
|
|
*
|
2015-12-31 12:42:02 +01:00
|
|
|
* DecoderControl::mutex is not locked by caller.
|
2013-12-29 16:51:18 +01:00
|
|
|
*/
|
|
|
|
static bool
|
2014-02-07 18:43:49 +01:00
|
|
|
decoder_run_file(Decoder &decoder, const char *uri_utf8, Path path_fs)
|
2013-12-29 16:51:18 +01:00
|
|
|
{
|
2014-02-07 18:43:49 +01:00
|
|
|
const char *suffix = uri_get_suffix(uri_utf8);
|
2013-12-29 16:51:18 +01:00
|
|
|
if (suffix == nullptr)
|
|
|
|
return false;
|
2009-11-07 14:57:46 +01:00
|
|
|
|
2016-09-08 20:48:04 +02:00
|
|
|
auto input_stream = decoder_input_stream_open(decoder.dc, path_fs);
|
|
|
|
assert(input_stream);
|
2016-02-23 11:07:02 +01:00
|
|
|
|
|
|
|
LoadReplayGain(decoder, *input_stream);
|
2009-11-07 17:58:52 +01:00
|
|
|
|
2016-02-23 11:07:02 +01:00
|
|
|
auto &is = *input_stream;
|
|
|
|
return decoder_plugins_try([&decoder, path_fs, suffix,
|
|
|
|
&is](const DecoderPlugin &plugin){
|
2015-12-31 12:47:56 +01:00
|
|
|
return TryDecoderFile(decoder,
|
|
|
|
path_fs,
|
|
|
|
suffix,
|
2016-02-23 11:07:02 +01:00
|
|
|
is,
|
2015-12-31 12:47:56 +01:00
|
|
|
plugin);
|
|
|
|
});
|
2009-11-07 14:57:46 +01:00
|
|
|
}
|
|
|
|
|
2016-05-13 13:00:40 +02:00
|
|
|
/**
|
|
|
|
* Decode a song.
|
|
|
|
*
|
|
|
|
* DecoderControl::mutex is not locked.
|
|
|
|
*/
|
|
|
|
static bool
|
|
|
|
DecoderUnlockedRunUri(Decoder &decoder, const char *real_uri, Path path_fs)
|
2016-05-13 12:54:41 +02:00
|
|
|
try {
|
2016-05-13 13:00:40 +02:00
|
|
|
return !path_fs.IsNull()
|
|
|
|
? decoder_run_file(decoder, real_uri, path_fs)
|
|
|
|
: decoder_run_stream(decoder, real_uri);
|
2016-05-13 13:12:21 +02:00
|
|
|
} catch (StopDecoder) {
|
|
|
|
return true;
|
2016-09-08 20:47:18 +02:00
|
|
|
} catch (...) {
|
2016-05-13 12:54:41 +02:00
|
|
|
const char *error_uri = real_uri;
|
|
|
|
const std::string allocated = uri_remove_auth(error_uri);
|
|
|
|
if (!allocated.empty())
|
|
|
|
error_uri = allocated.c_str();
|
|
|
|
|
2016-09-08 20:47:18 +02:00
|
|
|
std::throw_with_nested(FormatRuntimeError("Failed to decode %s",
|
|
|
|
error_uri));
|
2016-05-13 13:00:40 +02:00
|
|
|
}
|
|
|
|
|
2015-12-31 12:24:57 +01:00
|
|
|
/**
|
|
|
|
* Decode a song addressed by a #DetachedSong.
|
|
|
|
*
|
|
|
|
* Caller holds DecoderControl::mutex.
|
|
|
|
*/
|
2009-10-31 19:22:56 +01:00
|
|
|
static void
|
2013-10-28 10:09:21 +01:00
|
|
|
decoder_run_song(DecoderControl &dc,
|
2014-02-07 18:43:49 +01:00
|
|
|
const DetachedSong &song, const char *uri, Path path_fs)
|
2006-07-20 18:02:40 +02:00
|
|
|
{
|
2014-08-28 13:04:45 +02:00
|
|
|
Decoder decoder(dc, dc.start_time.IsPositive(),
|
2015-06-21 15:02:14 +02:00
|
|
|
/* pass the song tag only if it's
|
|
|
|
authoritative, i.e. if it's a local file -
|
|
|
|
tags on "stream" songs are just remembered
|
|
|
|
from the last time we played it*/
|
|
|
|
song.IsFile() ? new Tag(song.GetTag()) : nullptr);
|
2004-04-11 20:27:12 +02:00
|
|
|
|
2013-10-19 18:48:38 +02:00
|
|
|
dc.state = DecoderState::START;
|
2015-12-31 13:06:31 +01:00
|
|
|
dc.CommandFinishedLocked();
|
2004-05-19 04:14:20 +02:00
|
|
|
|
2015-12-31 13:02:55 +01:00
|
|
|
bool success;
|
2015-12-30 06:16:30 +01:00
|
|
|
{
|
|
|
|
const ScopeUnlock unlock(dc.mutex);
|
2004-05-31 03:21:17 +02:00
|
|
|
|
2016-09-08 20:41:44 +02:00
|
|
|
AtScopeExit(&decoder) {
|
|
|
|
/* flush the last chunk */
|
|
|
|
if (decoder.chunk != nullptr)
|
|
|
|
decoder.FlushChunk();
|
|
|
|
};
|
2010-01-03 22:44:23 +01:00
|
|
|
|
2016-09-08 20:41:44 +02:00
|
|
|
success = DecoderUnlockedRunUri(decoder, uri, path_fs);
|
2008-10-29 17:29:06 +01:00
|
|
|
|
2015-12-30 06:16:30 +01:00
|
|
|
}
|
2009-08-13 23:33:46 +02:00
|
|
|
|
2016-09-08 20:31:06 +02:00
|
|
|
if (decoder.error) {
|
2016-02-26 16:48:23 +01:00
|
|
|
/* copy the Error from struct Decoder to
|
2013-11-13 20:57:09 +01:00
|
|
|
DecoderControl */
|
2016-09-08 20:31:06 +02:00
|
|
|
std::rethrow_exception(decoder.error);
|
2015-12-31 13:02:55 +01:00
|
|
|
} else if (success)
|
2013-10-19 18:48:38 +02:00
|
|
|
dc.state = DecoderState::STOP;
|
2012-08-08 21:54:54 +02:00
|
|
|
else {
|
2014-01-07 21:39:47 +01:00
|
|
|
const char *error_uri = song.GetURI();
|
2013-10-23 21:38:07 +02:00
|
|
|
const std::string allocated = uri_remove_auth(error_uri);
|
|
|
|
if (!allocated.empty())
|
|
|
|
error_uri = allocated.c_str();
|
2012-08-08 21:54:54 +02:00
|
|
|
|
2016-09-08 20:26:40 +02:00
|
|
|
throw FormatRuntimeError("Failed to decode %s", error_uri);
|
2012-08-08 21:54:54 +02:00
|
|
|
}
|
2013-01-10 09:50:43 +01:00
|
|
|
|
2013-10-19 18:48:38 +02:00
|
|
|
dc.client_cond.signal();
|
2004-05-18 15:13:55 +02:00
|
|
|
}
|
|
|
|
|
2015-12-31 12:24:57 +01:00
|
|
|
/**
|
|
|
|
*
|
|
|
|
* Caller holds DecoderControl::mutex.
|
|
|
|
*/
|
2009-10-31 19:22:56 +01:00
|
|
|
static void
|
2013-10-28 10:09:21 +01:00
|
|
|
decoder_run(DecoderControl &dc)
|
2016-09-08 19:24:15 +02:00
|
|
|
try {
|
2013-10-19 18:48:38 +02:00
|
|
|
dc.ClearError();
|
2012-08-08 21:54:54 +02:00
|
|
|
|
2014-01-08 00:35:28 +01:00
|
|
|
assert(dc.song != nullptr);
|
2014-01-07 21:39:47 +01:00
|
|
|
const DetachedSong &song = *dc.song;
|
2009-11-03 20:02:19 +01:00
|
|
|
|
2014-02-07 18:43:49 +01:00
|
|
|
const char *const uri_utf8 = song.GetRealURI();
|
2009-01-02 10:48:55 +01:00
|
|
|
|
2014-02-07 18:43:49 +01:00
|
|
|
Path path_fs = Path::Null();
|
|
|
|
AllocatedPath path_buffer = AllocatedPath::Null();
|
2014-02-07 18:44:26 +01:00
|
|
|
if (PathTraitsUTF8::IsAbsolute(uri_utf8)) {
|
2016-09-08 17:14:11 +02:00
|
|
|
Error error;
|
|
|
|
path_buffer = AllocatedPath::FromUTF8(uri_utf8, error);
|
2014-02-07 18:43:49 +01:00
|
|
|
if (path_buffer.IsNull()) {
|
2015-12-31 13:06:31 +01:00
|
|
|
dc.CommandFinishedLocked();
|
2016-09-08 20:26:40 +02:00
|
|
|
throw std::move(error);
|
2014-02-07 18:43:49 +01:00
|
|
|
}
|
2012-08-15 17:56:06 +02:00
|
|
|
|
2014-02-07 18:43:49 +01:00
|
|
|
path_fs = path_buffer;
|
2009-01-02 10:48:55 +01:00
|
|
|
}
|
|
|
|
|
2014-02-07 18:43:49 +01:00
|
|
|
decoder_run_song(dc, song, uri_utf8, path_fs);
|
2016-09-08 19:24:15 +02:00
|
|
|
} catch (...) {
|
|
|
|
dc.state = DecoderState::ERROR;
|
|
|
|
dc.error = std::current_exception();
|
|
|
|
dc.client_cond.signal();
|
2009-01-02 10:48:55 +01:00
|
|
|
}
|
|
|
|
|
2013-10-17 18:42:14 +02:00
|
|
|
static void
|
|
|
|
decoder_task(void *arg)
|
2006-07-20 18:02:40 +02:00
|
|
|
{
|
2013-10-28 10:09:21 +01:00
|
|
|
DecoderControl &dc = *(DecoderControl *)arg;
|
2009-10-31 19:22:56 +01:00
|
|
|
|
2014-01-23 10:07:14 +01:00
|
|
|
SetThreadName("decoder");
|
|
|
|
|
2015-12-31 12:11:14 +01:00
|
|
|
const ScopeLock protect(dc.mutex);
|
2009-08-13 23:33:46 +02:00
|
|
|
|
2008-12-28 19:48:53 +01:00
|
|
|
do {
|
2013-10-19 18:48:38 +02:00
|
|
|
assert(dc.state == DecoderState::STOP ||
|
|
|
|
dc.state == DecoderState::ERROR);
|
2008-06-02 00:24:35 +02:00
|
|
|
|
2013-10-19 18:48:38 +02:00
|
|
|
switch (dc.command) {
|
2013-09-27 12:11:37 +02:00
|
|
|
case DecoderCommand::START:
|
2013-10-26 14:12:10 +02:00
|
|
|
dc.CycleMixRamp();
|
2013-10-19 18:48:38 +02:00
|
|
|
dc.replay_gain_prev_db = dc.replay_gain_db;
|
|
|
|
dc.replay_gain_db = 0;
|
2010-03-21 18:21:47 +01:00
|
|
|
|
2014-09-07 21:31:10 +02:00
|
|
|
decoder_run(dc);
|
2015-12-31 13:38:27 +01:00
|
|
|
|
2016-09-08 17:14:11 +02:00
|
|
|
if (dc.state == DecoderState::ERROR) {
|
|
|
|
try {
|
|
|
|
std::rethrow_exception(dc.error);
|
|
|
|
} catch (const std::exception &e) {
|
|
|
|
LogError(e);
|
|
|
|
} catch (const Error &error) {
|
|
|
|
LogError(error);
|
|
|
|
} catch (...) {
|
|
|
|
}
|
|
|
|
}
|
2015-12-31 13:38:27 +01:00
|
|
|
|
2014-09-07 21:31:10 +02:00
|
|
|
break;
|
2010-03-21 18:21:47 +01:00
|
|
|
|
2013-09-27 12:11:37 +02:00
|
|
|
case DecoderCommand::SEEK:
|
2014-09-07 21:31:10 +02:00
|
|
|
/* this seek was too late, and the decoder had
|
|
|
|
already finished; start a new decoder */
|
|
|
|
|
|
|
|
/* we need to clear the pipe here; usually the
|
|
|
|
PlayerThread is responsible, but it is not
|
|
|
|
aware that the decoder has finished */
|
|
|
|
dc.pipe->Clear(*dc.buffer);
|
|
|
|
|
2009-10-31 19:22:56 +01:00
|
|
|
decoder_run(dc);
|
2008-10-31 16:29:22 +01:00
|
|
|
break;
|
|
|
|
|
2013-09-27 12:11:37 +02:00
|
|
|
case DecoderCommand::STOP:
|
2015-12-31 13:06:31 +01:00
|
|
|
dc.CommandFinishedLocked();
|
2008-10-31 16:29:22 +01:00
|
|
|
break;
|
|
|
|
|
2013-09-27 12:11:37 +02:00
|
|
|
case DecoderCommand::NONE:
|
2013-10-19 18:48:38 +02:00
|
|
|
dc.Wait();
|
2008-10-31 16:29:22 +01:00
|
|
|
break;
|
2004-02-24 00:41:20 +01:00
|
|
|
}
|
2013-10-19 18:48:38 +02:00
|
|
|
} while (dc.command != DecoderCommand::NONE || !dc.quit);
|
Initial cut of fork() => pthreads() for decoder and player
I initially started to do a heavy rewrite that changed the way processes
communicated, but that was too much to do at once. So this change only
focuses on replacing the player and decode processes with threads and
using condition variables instead of polling in loops; so the changeset
itself is quiet small.
* The shared output buffer variables will still need locking
to guard against race conditions. So in this effect, we're probably
just as buggy as before. The reduced context-switching overhead of
using threads instead of processes may even make bugs show up more or
less often...
* Basic functionality appears to be working for playing local (and NFS)
audio, including:
play, pause, stop, seek, previous, next, and main playlist editing
* I haven't tested HTTP streams yet, they should work.
* I've only tested ALSA and Icecast. ALSA works fine, Icecast
metadata seems to get screwy at times and breaks song
advancement in the playlist at times.
* state file loading works, too (after some last-minute hacks with
non-blocking wakeup functions)
* The non-blocking (*_nb) variants of the task management functions are
probably overused. They're more lenient and easier to use because
much of our code is still based on our previous polling-based system.
* It currently segfaults on exit. I haven't paid much attention
to the exit/signal-handling routines other than ensuring it
compiles. At least the state file seems to work. We don't
do any cleanups of the threads on exit, yet.
* Update is still done in a child process and not in a thread.
To do this in a thread, we'll need to ensure it does proper
locking and communication with the main thread; but should
require less memory in the end because we'll be updating
the database "in-place" rather than updating a copy and
then bulk-loading when done.
* We're more sensitive to bugs in 3rd party libraries now.
My plan is to eventually use a master process which forks()
and restarts the child when it dies:
locking and communication with the main thread; but should
require less memory in the end because we'll be updating
the database "in-place" rather than updating a copy and
then bulk-loading when done.
* We're more sensitive to bugs in 3rd party libraries now.
My plan is to eventually use a master process which forks()
and restarts the child when it dies:
master - just does waitpid() + fork() in a loop
\- main thread
\- decoder thread
\- player thread
At the beginning of every song, the main thread will set
a dirty flag and update the state file. This way, if we
encounter a song that triggers a segfault killing the
main thread, the master will start the replacement main
on the next song.
* The main thread still wakes up every second on select()
to check for signals; which affects power management.
[merged r7138 from branches/ew]
git-svn-id: https://svn.musicpd.org/mpd/trunk@7240 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12 06:08:00 +02:00
|
|
|
}
|
2004-02-24 00:41:20 +01:00
|
|
|
|
2009-10-31 19:22:56 +01:00
|
|
|
void
|
2013-10-28 10:09:21 +01:00
|
|
|
decoder_thread_start(DecoderControl &dc)
|
Initial cut of fork() => pthreads() for decoder and player
I initially started to do a heavy rewrite that changed the way processes
communicated, but that was too much to do at once. So this change only
focuses on replacing the player and decode processes with threads and
using condition variables instead of polling in loops; so the changeset
itself is quiet small.
* The shared output buffer variables will still need locking
to guard against race conditions. So in this effect, we're probably
just as buggy as before. The reduced context-switching overhead of
using threads instead of processes may even make bugs show up more or
less often...
* Basic functionality appears to be working for playing local (and NFS)
audio, including:
play, pause, stop, seek, previous, next, and main playlist editing
* I haven't tested HTTP streams yet, they should work.
* I've only tested ALSA and Icecast. ALSA works fine, Icecast
metadata seems to get screwy at times and breaks song
advancement in the playlist at times.
* state file loading works, too (after some last-minute hacks with
non-blocking wakeup functions)
* The non-blocking (*_nb) variants of the task management functions are
probably overused. They're more lenient and easier to use because
much of our code is still based on our previous polling-based system.
* It currently segfaults on exit. I haven't paid much attention
to the exit/signal-handling routines other than ensuring it
compiles. At least the state file seems to work. We don't
do any cleanups of the threads on exit, yet.
* Update is still done in a child process and not in a thread.
To do this in a thread, we'll need to ensure it does proper
locking and communication with the main thread; but should
require less memory in the end because we'll be updating
the database "in-place" rather than updating a copy and
then bulk-loading when done.
* We're more sensitive to bugs in 3rd party libraries now.
My plan is to eventually use a master process which forks()
and restarts the child when it dies:
locking and communication with the main thread; but should
require less memory in the end because we'll be updating
the database "in-place" rather than updating a copy and
then bulk-loading when done.
* We're more sensitive to bugs in 3rd party libraries now.
My plan is to eventually use a master process which forks()
and restarts the child when it dies:
master - just does waitpid() + fork() in a loop
\- main thread
\- decoder thread
\- player thread
At the beginning of every song, the main thread will set
a dirty flag and update the state file. This way, if we
encounter a song that triggers a segfault killing the
main thread, the master will start the replacement main
on the next song.
* The main thread still wakes up every second on select()
to check for signals; which affects power management.
[merged r7138 from branches/ew]
git-svn-id: https://svn.musicpd.org/mpd/trunk@7240 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12 06:08:00 +02:00
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|
|
{
|
2013-10-19 18:48:38 +02:00
|
|
|
assert(!dc.thread.IsDefined());
|
2009-01-25 13:44:27 +01:00
|
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|
2013-10-19 18:48:38 +02:00
|
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dc.quit = false;
|
2016-06-17 19:06:30 +02:00
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dc.thread.Start(decoder_task, &dc);
|
2004-02-24 00:41:20 +01:00
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}
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