118 lines
2.9 KiB
C++
118 lines
2.9 KiB
C++
/*
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* Copyright (C) 2003-2015 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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#include "config.h"
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#include "MmsInputPlugin.hxx"
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#include "input/ThreadInputStream.hxx"
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#include "input/InputPlugin.hxx"
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#include "util/StringUtil.hxx"
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#include "util/Error.hxx"
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#include "util/Domain.hxx"
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#include <libmms/mmsx.h>
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static constexpr size_t MMS_BUFFER_SIZE = 256 * 1024;
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class MmsInputStream final : public ThreadInputStream {
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mmsx_t *mms;
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public:
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MmsInputStream(const char *_uri, Mutex &_mutex, Cond &_cond)
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:ThreadInputStream(input_plugin_mms.name, _uri, _mutex, _cond,
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MMS_BUFFER_SIZE) {
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}
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protected:
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virtual bool Open(gcc_unused Error &error) override;
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virtual size_t ThreadRead(void *ptr, size_t size,
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Error &error) override;
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void Close() override {
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mmsx_close(mms);
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}
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};
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static constexpr Domain mms_domain("mms");
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bool
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MmsInputStream::Open(Error &error)
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{
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Unlock();
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mms = mmsx_connect(nullptr, nullptr, GetURI(), 128 * 1024);
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if (mms == nullptr) {
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Lock();
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error.Set(mms_domain, "mmsx_connect() failed");
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return false;
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}
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Lock();
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/* TODO: is this correct? at least this selects the ffmpeg
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decoder, which seems to work fine */
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SetMimeType("audio/x-ms-wma");
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return true;
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}
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static InputStream *
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input_mms_open(const char *url,
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Mutex &mutex, Cond &cond,
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Error &error)
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{
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if (!StringStartsWith(url, "mms://") &&
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!StringStartsWith(url, "mmsh://") &&
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!StringStartsWith(url, "mmst://") &&
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!StringStartsWith(url, "mmsu://"))
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return nullptr;
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auto m = new MmsInputStream(url, mutex, cond);
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auto is = m->Start(error);
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if (is == nullptr)
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delete m;
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return is;
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}
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size_t
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MmsInputStream::ThreadRead(void *ptr, size_t read_size, Error &error)
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{
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/* unfortunately, mmsx_read() blocks until the whole buffer
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has been filled; to avoid big latencies, limit the size of
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each chunk we read to a reasonable size */
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constexpr size_t MAX_CHUNK = 16384;
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if (read_size > MAX_CHUNK)
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read_size = MAX_CHUNK;
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int nbytes = mmsx_read(nullptr, mms, (char *)ptr, read_size);
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if (nbytes <= 0) {
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if (nbytes < 0)
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error.SetErrno("mmsx_read() failed");
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return 0;
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}
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return (size_t)nbytes;
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}
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const InputPlugin input_plugin_mms = {
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"mms",
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nullptr,
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nullptr,
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input_mms_open,
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};
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