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authorMichele Calgaro <[email protected]>2020-12-06 19:28:06 +0900
committerMichele Calgaro <[email protected]>2020-12-06 19:28:06 +0900
commit00d4f92b717fbcbed6f9eee361975d6ee5380d59 (patch)
tree043b5970d66e539e1fbf6dde03440d6569e34c4e /soundserver/fileinputstream_impl.cpp
parent2f53bfe61c8ee78ff36ac6c66ae714b01e407b33 (diff)
downloadarts-00d4f92b717fbcbed6f9eee361975d6ee5380d59.tar.gz
arts-00d4f92b717fbcbed6f9eee361975d6ee5380d59.zip
Renaming of files in preparation for code style tools.
Signed-off-by: Michele Calgaro <[email protected]>
Diffstat (limited to 'soundserver/fileinputstream_impl.cpp')
-rw-r--r--soundserver/fileinputstream_impl.cpp193
1 files changed, 193 insertions, 0 deletions
diff --git a/soundserver/fileinputstream_impl.cpp b/soundserver/fileinputstream_impl.cpp
new file mode 100644
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+++ b/soundserver/fileinputstream_impl.cpp
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+ /*
+
+ Copyright (C) 2001 Stefan Westerfeld
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+
+ */
+
+#include "kmedia2.h"
+#include "stdsynthmodule.h"
+#include "debug.h"
+
+#include <unistd.h>
+#include <sys/mman.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <iostream>
+#include <cstring>
+
+using namespace std;
+using namespace Arts;
+
+namespace Arts {
+class FileInputStream_impl : virtual public FileInputStream_skel,
+ virtual public StdSynthModule
+{
+protected:
+ string _filename;
+ int age, fd;
+ unsigned int _size, position;
+ mcopbyte *data;
+ queue< DataPacket<mcopbyte>* > wqueue;
+
+public:
+ static const unsigned int PACKET_COUNT;
+ static const unsigned int PACKET_SIZE;
+
+ FileInputStream_impl()
+ {
+ fd = -1;
+ position = 0;
+ data = 0;
+ age = 0;
+ _size = 0;
+ }
+ ~FileInputStream_impl()
+ {
+ arts_assert(wqueue.size() == 0);
+
+ close();
+ }
+
+ void close()
+ {
+ if(data != 0)
+ {
+ munmap((char*)data, _size);
+ data = 0;
+ }
+
+ if(fd >= 0)
+ {
+ ::close(fd);
+ fd = -1;
+ }
+ }
+
+ bool open(const string& filename)
+ {
+ close();
+
+ fd = ::open(filename.c_str(), O_RDONLY);
+ if(fd < 0)
+ return false;
+
+ _size = lseek(fd, 0, SEEK_END);
+ lseek(fd, 0, SEEK_SET);
+
+ data = (mcopbyte *)mmap(0, _size, PROT_READ, MAP_SHARED, fd, 0);
+ if(data == 0)
+ {
+ close();
+ return false;
+ }
+
+ position = 0;
+ if(_filename != filename)
+ {
+ _filename = filename;
+ filename_changed(filename);
+ }
+ return true;
+ }
+
+ string filename() { return _filename; }
+ void filename(const string& newfilename) { open(newfilename); }
+
+ long size() { return _size; }
+ bool eof()
+ {
+ return (fd < 0 || position >= _size)
+ && (wqueue.size() == PACKET_COUNT);
+ }
+ bool seekOk() { return true; }
+
+ long seek(long newPosition)
+ {
+ arts_return_val_if_fail(fd < 0, -1);
+ arts_return_val_if_fail(newPosition < 0, -1);
+ arts_return_val_if_fail(newPosition > (long)_size, -1);
+
+ long ageBeforeSeek = age;
+ position = newPosition;
+
+ processQueue();
+ return ageBeforeSeek;
+ }
+
+ void processQueue()
+ {
+ unsigned int qsize = wqueue.size();
+
+ for(unsigned int i = 0; i < qsize; i++)
+ {
+ if(position < _size)
+ {
+ DataPacket<mcopbyte> *packet = wqueue.front();
+ wqueue.pop();
+
+ packet->size = min(PACKET_SIZE, _size - position);
+ memcpy(packet->contents, data+position, packet->size);
+ age += packet->size;
+ position += packet->size;
+ packet->send();
+ }
+ }
+ }
+
+ void request_outdata(DataPacket<mcopbyte> *packet)
+ {
+ wqueue.push(packet);
+ processQueue();
+ }
+
+ void streamStart()
+ {
+ /*
+ * start streaming
+ */
+ outdata.setPull(PACKET_COUNT, PACKET_SIZE);
+ }
+
+ void streamEnd()
+ {
+ /*
+ * end streaming
+ */
+ outdata.endPull();
+
+ while(!wqueue.empty())
+ {
+ DataPacket<mcopbyte> *packet = wqueue.front();
+ packet->size = 0;
+ packet->send();
+ wqueue.pop();
+ }
+ }
+};
+
+REGISTER_IMPLEMENTATION(FileInputStream_impl);
+
+const unsigned int
+FileInputStream_impl::PACKET_COUNT = 8;
+
+const unsigned int
+FileInputStream_impl::PACKET_SIZE = 8192;
+
+}