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100 lines
2.5 KiB
100 lines
2.5 KiB
15 years ago
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/*
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Copyright (C) 2000 Stefan Westerfeld
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stefan@space.twc.de
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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15 years ago
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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15 years ago
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*/
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#include "playtofile.h"
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#include "flowsystem.h"
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#include "stdsynthmodule.h"
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#include "convert.h"
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#include "stdio.h"
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using namespace Arts;
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using namespace std;
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namespace Arts {
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class PlayToFile_impl : virtual public PlayToFile_skel,
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virtual public StdSynthModule
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{
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typedef unsigned char uchar;
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unsigned char *outblock;
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unsigned long maxsamples;
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string _filename;
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FILE *out;
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public:
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PlayToFile_impl() : _filename("-")
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{
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}
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void filename(const string& newfilename) {
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_filename = newfilename;
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filename_changed(_filename);
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}
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string filename() { return _filename; }
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void streamInit() {
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maxsamples = 0;
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outblock = 0;
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if(_filename == "-")
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out = stdout;
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else
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out = fopen(_filename.c_str(),"w");
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}
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void streamEnd() {
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if(outblock)
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{
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delete[] outblock;
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outblock = 0;
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}
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if(out != stdout)
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{
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fclose(out);
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}
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}
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void calculateBlock(unsigned long samples)
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{
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if(samples > maxsamples)
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{
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maxsamples = samples;
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if(outblock) delete[] outblock;
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outblock = new uchar[maxsamples * 4]; // 2 channels, 16 bit
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}
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convert_stereo_2float_i16le(samples,left,right, outblock);
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fwrite(outblock, 1, 4 * samples,out);
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}
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/*
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* this is the most tricky part here - since we will run in a context
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* where no audio hardware will play the "give me more data role",
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* we'll have to request things ourselves (requireFlow() tells the
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* flowsystem that more signal flow should happen, so that
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* calculateBlock will get called
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*/
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void goOn()
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{
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_node()->requireFlow();
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}
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};
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REGISTER_IMPLEMENTATION(PlayToFile_impl);
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};
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