diff options
Diffstat (limited to 'src/com/jsyn/util/soundfile/WAVEFileParser.java')
| -rw-r--r-- | src/com/jsyn/util/soundfile/WAVEFileParser.java | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/src/com/jsyn/util/soundfile/WAVEFileParser.java b/src/com/jsyn/util/soundfile/WAVEFileParser.java deleted file mode 100644 index ec9350c..0000000 --- a/src/com/jsyn/util/soundfile/WAVEFileParser.java +++ /dev/null @@ -1,334 +0,0 @@ -/* - * Copyright 2009 Phil Burk, Mobileer Inc - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.jsyn.util.soundfile; - -import java.io.EOFException; -import java.io.IOException; - -import com.jsyn.data.FloatSample; -import com.jsyn.data.SampleMarker; -import com.jsyn.util.SampleLoader; - -class WAVEFileParser extends AudioFileParser implements ChunkHandler { - static final short WAVE_FORMAT_PCM = 1; - static final short WAVE_FORMAT_IEEE_FLOAT = 3; - static final short WAVE_FORMAT_EXTENSIBLE = (short) 0xFFFE; - - static final byte[] KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = { - 3, 0, 0, 0, 0, 0, 16, 0, -128, 0, 0, -86, 0, 56, -101, 113 - }; - static final byte[] KSDATAFORMAT_SUBTYPE_PCM = { - 1, 0, 0, 0, 0, 0, 16, 0, -128, 0, 0, -86, 0, 56, -101, 113 - }; - - static final int WAVE_ID = ('W' << 24) | ('A' << 16) | ('V' << 8) | 'E'; - static final int FMT_ID = ('f' << 24) | ('m' << 16) | ('t' << 8) | ' '; - static final int DATA_ID = ('d' << 24) | ('a' << 16) | ('t' << 8) | 'a'; - static final int CUE_ID = ('c' << 24) | ('u' << 16) | ('e' << 8) | ' '; - static final int FACT_ID = ('f' << 24) | ('a' << 16) | ('c' << 8) | 't'; - static final int SMPL_ID = ('s' << 24) | ('m' << 16) | ('p' << 8) | 'l'; - static final int LTXT_ID = ('l' << 24) | ('t' << 16) | ('x' << 8) | 't'; - static final int LABL_ID = ('l' << 24) | ('a' << 16) | ('b' << 8) | 'l'; - - int samplesPerBlock = 0; - int blockAlign = 0; - private int numFactSamples = 0; - private short format; - - WAVEFileParser() { - } - - @Override - FloatSample finish() throws IOException { - if ((byteData == null)) { - throw new IOException("No data found in audio sample."); - } - float[] floatData = new float[numFrames * samplesPerFrame]; - if (bitsPerSample == 16) { - SampleLoader.decodeLittleI16ToF32(byteData, 0, byteData.length, floatData, 0); - } else if (bitsPerSample == 24) { - SampleLoader.decodeLittleI24ToF32(byteData, 0, byteData.length, floatData, 0); - } else if (bitsPerSample == 32) { - if (format == WAVE_FORMAT_IEEE_FLOAT) { - SampleLoader.decodeLittleF32ToF32(byteData, 0, byteData.length, floatData, 0); - } else if (format == WAVE_FORMAT_PCM) { - SampleLoader.decodeLittleI32ToF32(byteData, 0, byteData.length, floatData, 0); - } else { - throw new IOException("WAV: Unsupported format = " + format); - } - } else { - throw new IOException("WAV: Unsupported bitsPerSample = " + bitsPerSample); - } - - return makeSample(floatData); - } - - // typedef struct { - // long dwIdentifier; - // long dwPosition; - // ID fccChunk; - // long dwChunkStart; - // long dwBlockStart; - // long dwSampleOffset; - // } CuePoint; - - /* Parse various chunks encountered in WAV file. */ - void parseCueChunk(IFFParser parser, int ckSize) throws IOException { - int numCuePoints = parser.readIntLittle(); - if (IFFParser.debug) { - System.out.println("WAV: numCuePoints = " + numCuePoints); - } - if ((ckSize - 4) != (6 * 4 * numCuePoints)) - throw new EOFException("Cue chunk too short!"); - for (int i = 0; i < numCuePoints; i++) { - int dwName = parser.readIntLittle(); /* dwName */ - int position = parser.readIntLittle(); // dwPosition - parser.skip(3 * 4); // fccChunk, dwChunkStart, dwBlockStart - int sampleOffset = parser.readIntLittle(); // dwPosition - - if (IFFParser.debug) { - System.out.println("WAV: parseCueChunk: #" + i + ", dwPosition = " + position - + ", dwName = " + dwName + ", dwSampleOffset = " + sampleOffset); - } - SampleMarker cuePoint = findOrCreateCuePoint(dwName); - cuePoint.position = position; - } - } - - void parseLablChunk(IFFParser parser, int ckSize) throws IOException { - int dwName = parser.readIntLittle(); - int textLength = (ckSize - 4) - 1; // don't read NUL terminator - String text = parseString(parser, textLength); - if (IFFParser.debug) { - System.out.println("WAV: label id = " + dwName + ", text = " + text); - } - SampleMarker cuePoint = findOrCreateCuePoint(dwName); - cuePoint.name = text; - } - - void parseLtxtChunk(IFFParser parser, int ckSize) throws IOException { - int dwName = parser.readIntLittle(); - int dwSampleLength = parser.readIntLittle(); - parser.skip(4 + (4 * 2)); // purpose through codepage - int textLength = (ckSize - ((4 * 4) + (4 * 2))) - 1; // don't read NUL - // terminator - if (textLength > 0) { - String text = parseString(parser, textLength); - if (IFFParser.debug) { - System.out.println("WAV: ltxt id = " + dwName + ", dwSampleLength = " - + dwSampleLength + ", text = " + text); - } - SampleMarker cuePoint = findOrCreateCuePoint(dwName); - cuePoint.comment = text; - } - } - - void parseFmtChunk(IFFParser parser, int ckSize) throws IOException { - format = parser.readShortLittle(); - samplesPerFrame = parser.readShortLittle(); - frameRate = parser.readIntLittle(); - parser.readIntLittle(); /* skip dwAvgBytesPerSec */ - blockAlign = parser.readShortLittle(); - bitsPerSample = parser.readShortLittle(); - - if (IFFParser.debug) { - System.out.println("WAV: format = 0x" + Integer.toHexString(format)); - System.out.println("WAV: bitsPerSample = " + bitsPerSample); - System.out.println("WAV: samplesPerFrame = " + samplesPerFrame); - } - bytesPerFrame = blockAlign; - bytesPerSample = bytesPerFrame / samplesPerFrame; - samplesPerBlock = (8 * blockAlign) / bitsPerSample; - - if (format == WAVE_FORMAT_EXTENSIBLE) { - int extraSize = parser.readShortLittle(); - short validBitsPerSample = parser.readShortLittle(); - int channelMask = parser.readIntLittle(); - byte[] guid = new byte[16]; - parser.read(guid); - if (IFFParser.debug) { - System.out.println("WAV: extraSize = " + extraSize); - System.out.println("WAV: validBitsPerSample = " + validBitsPerSample); - System.out.println("WAV: channelMask = " + channelMask); - System.out.print("guid = {"); - for (int i = 0; i < guid.length; i++) { - System.out.print(guid[i] + ", "); - } - System.out.println("}"); - } - if (matchBytes(guid, KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) { - format = WAVE_FORMAT_IEEE_FLOAT; - } else if (matchBytes(guid, KSDATAFORMAT_SUBTYPE_PCM)) { - format = WAVE_FORMAT_PCM; - } - } - if ((format != WAVE_FORMAT_PCM) && (format != WAVE_FORMAT_IEEE_FLOAT)) { - throw new IOException( - "Only WAVE_FORMAT_PCM and WAVE_FORMAT_IEEE_FLOAT supported. format = " + format); - } - if ((bitsPerSample != 16) && (bitsPerSample != 24) && (bitsPerSample != 32)) { - throw new IOException( - "Only 16 and 24 bit PCM or 32-bit float WAV files supported. width = " - + bitsPerSample); - } - } - - private boolean matchBytes(byte[] bar1, byte[] bar2) { - if (bar1.length != bar2.length) - return false; - for (int i = 0; i < bar1.length; i++) { - if (bar1[i] != bar2[i]) - return false; - } - return true; - } - - private int convertByteToFrame(int byteOffset) throws IOException { - if (blockAlign == 0) { - throw new IOException("WAV file has bytesPerBlock = zero"); - } - if (samplesPerFrame == 0) { - throw new IOException("WAV file has samplesPerFrame = zero"); - } - int nFrames = (samplesPerBlock * byteOffset) / (samplesPerFrame * blockAlign); - return nFrames; - } - - private int calculateNumFrames(int numBytes) throws IOException { - int nFrames; - if (numFactSamples > 0) { - // nFrames = numFactSamples / samplesPerFrame; - nFrames = numFactSamples; // FIXME which is right - } else { - nFrames = convertByteToFrame(numBytes); - } - return nFrames; - } - - // Read fraction in range of 0 to 0xFFFFFFFF and - // convert to 0.0 to 1.0 range. - private double readFraction(IFFParser parser) throws IOException { - // Put L at end or we get -1. - long maxFraction = 0x0FFFFFFFFL; - // Get unsigned fraction. Have to fit in long. - long fraction = (parser.readIntLittle()) & maxFraction; - return (double) fraction / (double) maxFraction; - } - - void parseSmplChunk(IFFParser parser, int ckSize) throws IOException { - parser.readIntLittle(); // Manufacturer - parser.readIntLittle(); // Product - parser.readIntLittle(); // Sample Period - int unityNote = parser.readIntLittle(); - double pitchFraction = readFraction(parser); - originalPitch = unityNote + pitchFraction; - - parser.readIntLittle(); // SMPTE Format - parser.readIntLittle(); // SMPTE Offset - int numLoops = parser.readIntLittle(); - parser.readIntLittle(); // Sampler Data - - int lastCueID = Integer.MAX_VALUE; - for (int i = 0; i < numLoops; i++) { - int cueID = parser.readIntLittle(); - parser.readIntLittle(); // type - int loopStartPosition = parser.readIntLittle(); - // Point to sample one after. - int loopEndPosition = parser.readIntLittle() + 1; - // TODO handle fractional loop sizes? - double endFraction = readFraction(parser); - parser.readIntLittle(); // playCount - - // Use lowest numbered cue. - if (cueID < lastCueID) { - sustainBegin = loopStartPosition; - sustainEnd = loopEndPosition; - } - } - } - - void parseFactChunk(IFFParser parser, int ckSize) throws IOException { - numFactSamples = parser.readIntLittle(); - } - - void parseDataChunk(IFFParser parser, int ckSize) throws IOException { - long numRead; - dataPosition = parser.getOffset(); - if (ifLoadData) { - byteData = new byte[ckSize]; - numRead = parser.read(byteData); - } else { - numRead = parser.skip(ckSize); - } - if (numRead != ckSize) { - throw new EOFException("WAV data chunk too short! Read " + numRead + " instead of " - + ckSize); - } - numFrames = calculateNumFrames(ckSize); - } - - @Override - public void handleForm(IFFParser parser, int ckID, int ckSize, int type) throws IOException { - if ((ckID == IFFParser.RIFF_ID) && (type != WAVE_ID)) - throw new IOException("Bad WAV form type = " + IFFParser.IDToString(type)); - } - - /** - * Called by parse() method to handle chunks in a WAV specific manner. - * - * @param ckID four byte chunk ID such as 'data' - * @param ckSize size of chunk in bytes - * @return number of bytes left in chunk - */ - @Override - public void handleChunk(IFFParser parser, int ckID, int ckSize) throws IOException { - switch (ckID) { - case FMT_ID: - parseFmtChunk(parser, ckSize); - break; - case DATA_ID: - parseDataChunk(parser, ckSize); - break; - case CUE_ID: - parseCueChunk(parser, ckSize); - break; - case FACT_ID: - parseFactChunk(parser, ckSize); - break; - case SMPL_ID: - parseSmplChunk(parser, ckSize); - break; - case LABL_ID: - parseLablChunk(parser, ckSize); - break; - case LTXT_ID: - parseLtxtChunk(parser, ckSize); - break; - default: - break; - } - } - - /* - * (non-Javadoc) - * @see com.softsynth.javasonics.util.AudioSampleLoader#isLittleEndian() - */ - boolean isLittleEndian() { - return true; - } - -} |