| /* |
| * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package com.sun.media.sound; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import javax.sound.midi.MidiChannel; |
| import javax.sound.midi.VoiceStatus; |
| |
| /** |
| * Abstract resampler class. |
| * |
| * @author Karl Helgason |
| */ |
| public abstract class SoftAbstractResampler implements SoftResampler { |
| |
| private class ModelAbstractResamplerStream implements SoftResamplerStreamer { |
| |
| AudioFloatInputStream stream; |
| boolean stream_eof = false; |
| int loopmode; |
| boolean loopdirection = true; // true = forward |
| float loopstart; |
| float looplen; |
| float target_pitch; |
| float[] current_pitch = new float[1]; |
| boolean started; |
| boolean eof; |
| int sector_pos = 0; |
| int sector_size = 400; |
| int sector_loopstart = -1; |
| boolean markset = false; |
| int marklimit = 0; |
| int streampos = 0; |
| int nrofchannels = 2; |
| boolean noteOff_flag = false; |
| float[][] ibuffer; |
| boolean ibuffer_order = true; |
| float[] sbuffer; |
| int pad; |
| int pad2; |
| float[] ix = new float[1]; |
| int[] ox = new int[1]; |
| float samplerateconv = 1; |
| float pitchcorrection = 0; |
| |
| ModelAbstractResamplerStream() { |
| pad = getPadding(); |
| pad2 = getPadding() * 2; |
| ibuffer = new float[2][sector_size + pad2]; |
| ibuffer_order = true; |
| } |
| |
| public void noteOn(MidiChannel channel, VoiceStatus voice, |
| int noteNumber, int velocity) { |
| } |
| |
| public void noteOff(int velocity) { |
| noteOff_flag = true; |
| } |
| |
| public void open(ModelWavetable osc, float outputsamplerate) |
| throws IOException { |
| |
| eof = false; |
| nrofchannels = osc.getChannels(); |
| if (ibuffer.length < nrofchannels) { |
| ibuffer = new float[nrofchannels][sector_size + pad2]; |
| } |
| |
| stream = osc.openStream(); |
| streampos = 0; |
| stream_eof = false; |
| pitchcorrection = osc.getPitchcorrection(); |
| samplerateconv |
| = stream.getFormat().getSampleRate() / outputsamplerate; |
| looplen = osc.getLoopLength(); |
| loopstart = osc.getLoopStart(); |
| sector_loopstart = (int) (loopstart / sector_size); |
| sector_loopstart = sector_loopstart - 1; |
| |
| sector_pos = 0; |
| |
| if (sector_loopstart < 0) |
| sector_loopstart = 0; |
| started = false; |
| loopmode = osc.getLoopType(); |
| |
| if (loopmode != 0) { |
| markset = false; |
| marklimit = nrofchannels * (int) (looplen + pad2 + 1); |
| } else |
| markset = true; |
| // loopmode = 0; |
| |
| target_pitch = samplerateconv; |
| current_pitch[0] = samplerateconv; |
| |
| ibuffer_order = true; |
| loopdirection = true; |
| noteOff_flag = false; |
| |
| for (int i = 0; i < nrofchannels; i++) |
| Arrays.fill(ibuffer[i], sector_size, sector_size + pad2, 0); |
| ix[0] = pad; |
| eof = false; |
| |
| ix[0] = sector_size + pad; |
| sector_pos = -1; |
| streampos = -sector_size; |
| |
| nextBuffer(); |
| } |
| |
| public void setPitch(float pitch) { |
| /* |
| this.pitch = (float) Math.pow(2f, |
| (pitchcorrection + pitch) / 1200.0f) |
| * samplerateconv; |
| */ |
| this.target_pitch = (float)Math.exp( |
| (pitchcorrection + pitch) * (Math.log(2.0) / 1200.0)) |
| * samplerateconv; |
| |
| if (!started) |
| current_pitch[0] = this.target_pitch; |
| } |
| |
| public void nextBuffer() throws IOException { |
| if (ix[0] < pad) { |
| if (markset) { |
| // reset to target sector |
| stream.reset(); |
| ix[0] += streampos - (sector_loopstart * sector_size); |
| sector_pos = sector_loopstart; |
| streampos = sector_pos * sector_size; |
| |
| // and go one sector backward |
| ix[0] += sector_size; |
| sector_pos -= 1; |
| streampos -= sector_size; |
| stream_eof = false; |
| } |
| } |
| |
| if (ix[0] >= sector_size + pad) { |
| if (stream_eof) { |
| eof = true; |
| return; |
| } |
| } |
| |
| if (ix[0] >= sector_size * 4 + pad) { |
| int skips = (int)((ix[0] - sector_size * 4 + pad) / sector_size); |
| ix[0] -= sector_size * skips; |
| sector_pos += skips; |
| streampos += sector_size * skips; |
| stream.skip(sector_size * skips); |
| } |
| |
| while (ix[0] >= sector_size + pad) { |
| if (!markset) { |
| if (sector_pos + 1 == sector_loopstart) { |
| stream.mark(marklimit); |
| markset = true; |
| } |
| } |
| ix[0] -= sector_size; |
| sector_pos++; |
| streampos += sector_size; |
| |
| for (int c = 0; c < nrofchannels; c++) { |
| float[] cbuffer = ibuffer[c]; |
| for (int i = 0; i < pad2; i++) |
| cbuffer[i] = cbuffer[i + sector_size]; |
| } |
| |
| int ret; |
| if (nrofchannels == 1) |
| ret = stream.read(ibuffer[0], pad2, sector_size); |
| else { |
| int slen = sector_size * nrofchannels; |
| if (sbuffer == null || sbuffer.length < slen) |
| sbuffer = new float[slen]; |
| int sret = stream.read(sbuffer, 0, slen); |
| if (sret == -1) |
| ret = -1; |
| else { |
| ret = sret / nrofchannels; |
| for (int i = 0; i < nrofchannels; i++) { |
| float[] buff = ibuffer[i]; |
| int ix = i; |
| int ix_step = nrofchannels; |
| int ox = pad2; |
| for (int j = 0; j < ret; j++, ix += ix_step, ox++) |
| buff[ox] = sbuffer[ix]; |
| } |
| } |
| |
| } |
| |
| if (ret == -1) { |
| ret = 0; |
| stream_eof = true; |
| for (int i = 0; i < nrofchannels; i++) |
| Arrays.fill(ibuffer[i], pad2, pad2 + sector_size, 0f); |
| return; |
| } |
| if (ret != sector_size) { |
| for (int i = 0; i < nrofchannels; i++) |
| Arrays.fill(ibuffer[i], pad2 + ret, pad2 + sector_size, 0f); |
| } |
| |
| ibuffer_order = true; |
| |
| } |
| |
| } |
| |
| public void reverseBuffers() { |
| ibuffer_order = !ibuffer_order; |
| for (int c = 0; c < nrofchannels; c++) { |
| float[] cbuff = ibuffer[c]; |
| int len = cbuff.length - 1; |
| int len2 = cbuff.length / 2; |
| for (int i = 0; i < len2; i++) { |
| float x = cbuff[i]; |
| cbuff[i] = cbuff[len - i]; |
| cbuff[len - i] = x; |
| } |
| } |
| } |
| |
| public int read(float[][] buffer, int offset, int len) |
| throws IOException { |
| |
| if (eof) |
| return -1; |
| |
| if (noteOff_flag) |
| if ((loopmode & 2) != 0) |
| if (loopdirection) |
| loopmode = 0; |
| |
| |
| float pitchstep = (target_pitch - current_pitch[0]) / len; |
| float[] current_pitch = this.current_pitch; |
| started = true; |
| |
| int[] ox = this.ox; |
| ox[0] = offset; |
| int ox_end = len + offset; |
| |
| float ixend = sector_size + pad; |
| if (!loopdirection) |
| ixend = pad; |
| while (ox[0] != ox_end) { |
| nextBuffer(); |
| if (!loopdirection) { |
| // If we are in backward playing part of pingpong |
| // or reverse loop |
| |
| if (streampos < (loopstart + pad)) { |
| ixend = loopstart - streampos + pad2; |
| if (ix[0] <= ixend) { |
| if ((loopmode & 4) != 0) { |
| // Ping pong loop, change loopdirection |
| loopdirection = true; |
| ixend = sector_size + pad; |
| continue; |
| } |
| |
| ix[0] += looplen; |
| ixend = pad; |
| continue; |
| } |
| } |
| |
| if (ibuffer_order != loopdirection) |
| reverseBuffers(); |
| |
| ix[0] = (sector_size + pad2) - ix[0]; |
| ixend = (sector_size + pad2) - ixend; |
| ixend++; |
| |
| float bak_ix = ix[0]; |
| int bak_ox = ox[0]; |
| float bak_pitch = current_pitch[0]; |
| for (int i = 0; i < nrofchannels; i++) { |
| if (buffer[i] != null) { |
| ix[0] = bak_ix; |
| ox[0] = bak_ox; |
| current_pitch[0] = bak_pitch; |
| interpolate(ibuffer[i], ix, ixend, current_pitch, |
| pitchstep, buffer[i], ox, ox_end); |
| } |
| } |
| |
| ix[0] = (sector_size + pad2) - ix[0]; |
| ixend--; |
| ixend = (sector_size + pad2) - ixend; |
| |
| if (eof) { |
| current_pitch[0] = this.target_pitch; |
| return ox[0] - offset; |
| } |
| |
| continue; |
| } |
| if (loopmode != 0) { |
| if (streampos + sector_size > (looplen + loopstart + pad)) { |
| ixend = loopstart + looplen - streampos + pad2; |
| if (ix[0] >= ixend) { |
| if ((loopmode & 4) != 0 || (loopmode & 8) != 0) { |
| // Ping pong or revese loop, change loopdirection |
| loopdirection = false; |
| ixend = pad; |
| continue; |
| } |
| ixend = sector_size + pad; |
| ix[0] -= looplen; |
| continue; |
| } |
| } |
| } |
| |
| if (ibuffer_order != loopdirection) |
| reverseBuffers(); |
| |
| float bak_ix = ix[0]; |
| int bak_ox = ox[0]; |
| float bak_pitch = current_pitch[0]; |
| for (int i = 0; i < nrofchannels; i++) { |
| if (buffer[i] != null) { |
| ix[0] = bak_ix; |
| ox[0] = bak_ox; |
| current_pitch[0] = bak_pitch; |
| interpolate(ibuffer[i], ix, ixend, current_pitch, |
| pitchstep, buffer[i], ox, ox_end); |
| } |
| } |
| |
| if (eof) { |
| current_pitch[0] = this.target_pitch; |
| return ox[0] - offset; |
| } |
| } |
| |
| current_pitch[0] = this.target_pitch; |
| return len; |
| } |
| |
| public void close() throws IOException { |
| stream.close(); |
| } |
| } |
| |
| public abstract int getPadding(); |
| |
| public abstract void interpolate(float[] in, float[] in_offset, |
| float in_end, float[] pitch, float pitchstep, float[] out, |
| int[] out_offset, int out_end); |
| |
| public final SoftResamplerStreamer openStreamer() { |
| return new ModelAbstractResamplerStream(); |
| } |
| } |
