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580 lines
13 KiB
580 lines
13 KiB
/*
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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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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#ifdef HAVE_LIBAUDIOFILE
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#include "artsflow.h"
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#include "stdsynthmodule.h"
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#include "debug.h"
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#include "cachedwav.h"
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#include "convert.h"
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#include <stdio.h>
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#include <iostream>
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#include <climits>
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#include <cstdlib>
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#include <cstring>
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extern "C" {
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/* Some versions of libaudiofile seem to lack the extern "C" declaration,
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* so you you may need that extra one.
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*
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* Other versions of libaudiofile seem to have two closing "}" in aupvlist.h,
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* so if you can't compile, this, check that /usr/include/aupvlist.h tqcontains
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* something like that
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*
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* #ifdef __cplusplus
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* }
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* #endif
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*
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* only once not twice.
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*/
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#include "audiofile.h"
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}
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#include <sys/stat.h>
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#include <unistd.h>
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using namespace std;
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using namespace Arts;
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CachedWav *CachedWav::load(Cache *cache, string filename)
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{
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CachedWav *wav;
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wav = (CachedWav *)cache->get(string("CachedWav:")+filename);
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if(!wav) {
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wav = new CachedWav(cache,filename);
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if(!wav->initOk) // loading failed
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{
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wav->decRef();
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return 0;
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}
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}
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return(wav);
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}
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bool CachedWav::isValid()
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{
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if(!initOk)
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return false;
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struct stat newstat;
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lstat(filename.c_str(),&newstat);
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return(newstat.st_mtime == oldstat.st_mtime);
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}
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int CachedWav::memoryUsage()
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{
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return(bufferSize);
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}
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CachedWav::CachedWav(Cache *cache, string filename) : CachedObject(cache),
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filename(filename),initOk(false), buffer(0)
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{
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int sampleFormat;
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AFframecount frameCount;
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AFfilehandle file;
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setKey(string("CachedWav:")+filename);
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if(lstat(filename.c_str(),&oldstat) == -1)
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{
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arts_info("CachedWav: Can't stat file '%s'", filename.c_str());
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return;
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}
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file = afOpenFile(filename.c_str(), "r", NULL);
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if(!file)
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{
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arts_info("CachedWav: Can't read file '%s'", filename.c_str());
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return;
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}
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frameCount = afGetFrameCount(file, AF_DEFAULT_TRACK);
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if(frameCount <= 0 || frameCount >= INT_MAX)
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{
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arts_info("CachedWav: Invalid length for '%s'", filename.c_str());
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afCloseFile(file);
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return;
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}
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channelCount = afGetChannels(file, AF_DEFAULT_TRACK);
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afGetSampleFormat(file, AF_DEFAULT_TRACK, &sampleFormat, &sampleWidth);
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// we want everything converted to little endian unconditionally
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afSetVirtualByteOrder(file,AF_DEFAULT_TRACK, AF_BYTEORDER_LITTLEENDIAN);
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arts_debug("loaded wav %s",filename.c_str());
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arts_debug(" sample format: %d, sample width: %d",
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sampleFormat,sampleWidth);
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arts_debug(" channelCount: %d",channelCount);
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arts_debug(" frameCount: %d",frameCount);
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// different handling required for other sample widths
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assert(sampleWidth == 16 || sampleWidth == 8);
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long frameSize = (sampleWidth/8)*channelCount;
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samplingRate = afGetRate(file, AF_DEFAULT_TRACK);
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/*
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* if we don't know the track bytes, we'll have to figure out ourselves
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* how many frames are stored here - it would be nicer if libaudiofile
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* let us know somehow whether the value returned for getFrameCount
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* means "don't know" or is really the correct length
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*/
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int trackBytes = afGetTrackBytes(file, AF_DEFAULT_TRACK);
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if(trackBytes == -1)
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{
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arts_debug("unknown length");
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long fcount = 0, f = 0;
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list<void *> blocks;
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do
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{
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void *block = malloc(1024 * frameSize);
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f = afReadFrames(file, AF_DEFAULT_TRACK,block,1024);
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if(f > 0)
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{
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fcount += f;
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blocks.push_back(block);
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}
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else
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{
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free(block);
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}
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} while(f > 0);
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frameCount = fcount;
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arts_debug("figured out frameCount = %ld", fcount);
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bufferSize = frameCount * frameSize;
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buffer = new uchar[bufferSize];
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assert(buffer);
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// reassemble and free the blocks
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while(!blocks.empty())
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{
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void *block = blocks.front();
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blocks.pop_front();
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f = (fcount>1024)?1024:fcount;
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memcpy(&buffer[(frameCount-fcount)*frameSize],block,f*frameSize);
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fcount -= f;
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}
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assert(fcount == 0);
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}
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else
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{
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bufferSize = frameCount * frameSize;
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buffer = new uchar[bufferSize];
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assert(buffer);
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afReadFrames(file, AF_DEFAULT_TRACK,buffer,frameCount);
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}
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afCloseFile(file);
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initOk = true;
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}
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CachedWav::~CachedWav()
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{
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if(buffer)
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delete[] buffer;
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}
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namespace Arts {
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class Synth_PLAY_WAV_impl : public Synth_PLAY_WAV_skel, public StdSynthModule {
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protected:
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double flpos;
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float _speed;
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string _filename;
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bool _finished;
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CachedWav *cachedwav;
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void unload()
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{
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if(cachedwav)
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{
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cachedwav->decRef();
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cachedwav = 0;
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}
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}
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void load()
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{
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// unload the old file if necessary
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unload();
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// load the new (which will reset the position)
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cachedwav = CachedWav::load(Cache::the(), _filename);
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flpos = 0.0;
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}
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public:
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float speed() { return _speed; }
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void speed(float newSpeed) { _speed = newSpeed; }
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string filename() { return _filename; }
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void filename(const string& filename) { _filename = filename; load(); }
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void finished(bool f)
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{
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if(_finished != f)
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{
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_finished = f;
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finished_changed(f);
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}
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}
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bool finished() { return _finished; }
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Synth_PLAY_WAV_impl();
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~Synth_PLAY_WAV_impl();
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void streamInit();
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void calculateBlock(unsigned long samples);
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};
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REGISTER_IMPLEMENTATION(Synth_PLAY_WAV_impl);
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}
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Synth_PLAY_WAV_impl::Synth_PLAY_WAV_impl()
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{
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cachedwav = 0;
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_speed = 1.0;
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_filename = "";
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_finished = false;
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}
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Synth_PLAY_WAV_impl::~Synth_PLAY_WAV_impl()
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{
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unload();
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}
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void Synth_PLAY_WAV_impl::streamInit()
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{
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finished(false);
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}
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void Synth_PLAY_WAV_impl::calculateBlock(unsigned long samples)
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{
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unsigned long haveSamples = 0;
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if(cachedwav)
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{
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double speed = cachedwav->samplingRate / samplingRateFloat * _speed;
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haveSamples = uni_convert_stereo_2float(samples, cachedwav->buffer,
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cachedwav->bufferSize,cachedwav->channelCount,cachedwav->sampleWidth,
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left,right,speed,flpos);
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flpos += (double)haveSamples * speed;
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}
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if(haveSamples != samples)
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{
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unsigned long i;
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for(i=haveSamples;i<samples;i++)
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left[i] = right[i] = 0.0;
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finished(true);
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}
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/*
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float speed = 0.0;
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unsigned long haveSamples = 0;
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if(cachedwav)
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{
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float allSamples = cachedwav->bufferSize*8 /
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cachedwav->sampleWidth/cachedwav->channelCount;
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float fHaveSamples = allSamples - flpos;
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speed = cachedwav->samplingRate / (float)samplingRate * _speed;
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fHaveSamples /= speed;
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fHaveSamples -= 2.0; // one due to interpolation and another against
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// rounding errors
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if(fHaveSamples > 0)
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{
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haveSamples = (int)fHaveSamples;
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if(haveSamples > samples) haveSamples = samples;
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}
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}
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if(haveSamples) // something left to play?
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{
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if(cachedwav->channelCount == 1)
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{
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if(cachedwav->sampleWidth == 16) {
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interpolate_mono_16le_float(haveSamples,
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flpos,speed,cachedwav->buffer,left);
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}
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else {
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interpolate_mono_8_float(haveSamples,
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flpos,speed,cachedwav->buffer,left);
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}
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memcpy(right,left,sizeof(float)*haveSamples);
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}
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else if(cachedwav->channelCount == 2)
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{
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if(cachedwav->sampleWidth == 16) {
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interpolate_stereo_i16le_2float(haveSamples,
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flpos,speed,cachedwav->buffer,left,right);
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}
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else {
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interpolate_stereo_i8_2float(haveSamples,
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flpos,speed,cachedwav->buffer,left,right);
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}
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} else {
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assert(false);
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}
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flpos += (float)haveSamples * speed;
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}
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if(haveSamples != samples)
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{
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unsigned long i;
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for(i=haveSamples;i<samples;i++)
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left[i] = right[i] = 0.0;
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_finished = true;
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}
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*/
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}
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#if 0
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class Synth_PLAY_WAV :public SynthModule {
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protected:
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CachedWav *cachedwav;
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unsigned char *buffer;
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int channelCount;
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unsigned long bufferSize, position, bytesPerSample;
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// inputs:
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enum { PROP_FILENAME };
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// outputs:
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enum { LEFT, RIGHT, DONE };
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public:
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void Initialize();
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void DeInitialize();
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void Calculate() { assert(false); }
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void CalculateBlock(unsigned long samples);
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string getParams() { return("_filename;left,right,done"); }
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static void *Creator() { return new Synth_PLAY_WAV; }
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};
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ModuleClient MC_Synth_PLAY_WAV(SynthModule::get_MS,"Synth_PLAY_WAV",Synth_PLAY_WAV::Creator);
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void Synth_PLAY_WAV::CalculateBlock(unsigned long samples)
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{
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unsigned long haveSamples = samples;
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unsigned long remainingSamples;
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remainingSamples = (bufferSize-position)/bytesPerSample;
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if(haveSamples > remainingSamples) haveSamples = remainingSamples;
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float *left = out[LEFT], *right = out[RIGHT], *done = out[DONE];
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unsigned long i;
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if(haveSamples)
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{
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if(channelCount == 1)
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{
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if(bytesPerSample == 2) {
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convert_mono_16le_float(haveSamples,&buffer[position],left);
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}
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else {
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convert_mono_8_float(haveSamples,&buffer[position],left);
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}
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memcpy(right,left,sizeof(float)*haveSamples);
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}
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else if(channelCount == 2)
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{
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if(bytesPerSample == 2) {
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convert_stereo_i16le_2float(haveSamples,&buffer[position],
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left,right);
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}
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else {
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convert_stereo_i8_2float(haveSamples,&buffer[position],
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left,right);
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}
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} else {
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assert(false);
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}
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for(i=0;i<haveSamples;i++) done[i] = 0.0;
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position += bytesPerSample*channelCount*haveSamples;
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}
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for(i=haveSamples;i<samples;i++)
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{
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left[i] = right[i] = 0.0; done[i] = 1.0; // ready, kill me ;)
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}
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}
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void Synth_PLAY_WAV::DeInitialize()
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{
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cachedwav->decRef();
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}
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void Synth_PLAY_WAV::Initialize()
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{
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cachedwav = CachedWav::load(Synthesizer->getCache(),
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getStringProperty(PROP_FILENAME));
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// may take some speed to access cachedwav every time
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bufferSize = cachedwav->bufferSize;
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channelCount = cachedwav->channelCount;
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buffer = cachedwav->buffer;
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bytesPerSample = cachedwav->sampleWidth/8;
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haveCalculateBlock = true;
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position = 0;
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}
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class Synth_PLAY_PITCHED_WAV :public SynthModule {
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protected:
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CachedWav *cachedwav;
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float flpos;
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// inputs:
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enum { FREQUENCY,RECFREQUENCY, PROP_FILENAME };
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// outputs:
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enum { LEFT, RIGHT, DONE };
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public:
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void Initialize();
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void DeInitialize();
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void Calculate() { assert(false); }
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void CalculateBlock(unsigned long samples);
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string getParams() { return("frequency,recfrequency,_filename;left,right,done"); }
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static void *Creator() { return new Synth_PLAY_PITCHED_WAV; }
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};
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ModuleClient MC_Synth_PLAY_PITCHED_WAV(SynthModule::get_MS,"Synth_PLAY_PITCHED_WAV",Synth_PLAY_PITCHED_WAV::Creator);
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void Synth_PLAY_PITCHED_WAV::CalculateBlock(unsigned long samples)
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{
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float frequency = in[FREQUENCY][0], recfrequency = in[RECFREQUENCY][0];
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float allSamples = cachedwav->bufferSize*8 /
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cachedwav->sampleWidth/cachedwav->channelCount;
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float fHaveSamples = allSamples - flpos;
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float speed = cachedwav->samplingRate / (float)samplingRate *
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frequency / recfrequency;
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fHaveSamples /= speed;
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fHaveSamples -= 2.0; // one due to interpolation and another against
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// rounding errors
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unsigned long haveSamples;
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if(fHaveSamples < 0)
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{
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haveSamples = 0;
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}
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else
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{
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haveSamples = fHaveSamples;
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if(haveSamples > samples) haveSamples = samples;
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}
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float *left = out[LEFT], *right = out[RIGHT], *done = out[DONE];
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unsigned long i;
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if(haveSamples)
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{
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if(cachedwav->channelCount == 1)
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{
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if(cachedwav->sampleWidth == 16) {
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interpolate_mono_16le_float(haveSamples,
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flpos,speed,cachedwav->buffer,left);
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}
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else {
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interpolate_mono_8_float(haveSamples,
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flpos,speed,cachedwav->buffer,left);
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}
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memcpy(right,left,sizeof(float)*haveSamples);
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}
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else if(cachedwav->channelCount == 2)
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{
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if(cachedwav->sampleWidth == 16) {
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interpolate_stereo_i16le_2float(haveSamples,
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flpos,speed,cachedwav->buffer,left,right);
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}
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else {
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interpolate_stereo_i8_2float(haveSamples,
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flpos,speed,cachedwav->buffer,left,right);
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}
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} else {
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assert(false);
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}
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for(i=0;i<haveSamples;i++) done[i] = 0.0;
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flpos += (float)haveSamples * speed;
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}
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for(i=haveSamples;i<samples;i++)
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{
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left[i] = right[i] = 0.0; done[i] = 1.0; // ready, kill me ;)
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}
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}
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void Synth_PLAY_PITCHED_WAV::DeInitialize()
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{
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cachedwav->decRef();
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}
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void Synth_PLAY_PITCHED_WAV::Initialize()
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{
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cachedwav = CachedWav::load(Synthesizer->getCache(),
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getStringProperty(PROP_FILENAME));
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haveCalculateBlock = true;
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flpos = 0.0;
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}
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#endif
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#else
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#ifdef __GNUC__
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#warning "No libaudiofile available, that means, you won't be able to play wavs"
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#endif
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#endif
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