List of usage examples for java.nio ByteBuffer getFloat
public abstract float getFloat();
From source file:net.pms.util.AudioUtils.java
/** * Parses the old RealAudio 1.0 and 2.0 formats that's not supported by * neither {@link org.jaudiotagger} nor MediaInfo. Returns {@code false} if * {@code channel} isn't one of these formats or the parsing fails. * <p>/* ww w. ja v a 2s .com*/ * Primary references: * <ul> * <li><a href="https://wiki.multimedia.cx/index.php/RealMedia">RealAudio on * MultimediaWiki</a></li> * <li><a * href="https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/rmdec.c" * >FFmpeg rmdec.c</a></li> * </ul> * * @param channel the {@link Channel} containing the input. Size will only * be parsed if {@code channel} is a {@link FileChannel} * instance. * @param media the {@link DLNAMediaInfo} instance to write the parsing * results to. * @return {@code true} if the {@code channel} input is in RealAudio 1.0 or * 2.0 format and the parsing succeeds; false otherwise */ public static boolean parseRealAudio(ReadableByteChannel channel, DLNAMediaInfo media) { final byte[] magicBytes = { 0x2E, 0x72, 0x61, (byte) 0xFD }; ByteBuffer buffer = ByteBuffer.allocate(8); buffer.order(ByteOrder.BIG_ENDIAN); DLNAMediaAudio audio = new DLNAMediaAudio(); try { int count = channel.read(buffer); if (count < 4) { LOGGER.trace("Input is too short to be RealAudio"); return false; } buffer.flip(); byte[] signature = new byte[4]; buffer.get(signature); if (!Arrays.equals(magicBytes, signature)) { if (LOGGER.isTraceEnabled()) { LOGGER.trace("Input signature ({}) mismatches RealAudio version 1.0 or 2.0", new String(signature, StandardCharsets.US_ASCII)); } return false; } media.setContainer(FormatConfiguration.RA); short version = buffer.getShort(); int reportedHeaderSize = 0; int reportedDataSize = 0; if (version == 3) { audio.setCodecA(FormatConfiguration.REALAUDIO_14_4); audio.getAudioProperties().setNumberOfChannels(1); audio.getAudioProperties().setSampleFrequency(8000); short headerSize = buffer.getShort(); buffer = ByteBuffer.allocate(headerSize); channel.read(buffer); buffer.flip(); buffer.position(8); int bytesPerMinute = buffer.getShort() & 0xFFFF; reportedDataSize = buffer.getInt(); byte b = buffer.get(); if (b != 0) { byte[] title = new byte[b & 0xFF]; buffer.get(title); String titleString = new String(title, StandardCharsets.US_ASCII); audio.setSongname(titleString); audio.setAudioTrackTitleFromMetadata(titleString); } b = buffer.get(); if (b != 0) { byte[] artist = new byte[b & 0xFF]; buffer.get(artist); audio.setArtist(new String(artist, StandardCharsets.US_ASCII)); } audio.setBitRate(bytesPerMinute * 8 / 60); media.setBitrate(bytesPerMinute * 8 / 60); } else if (version == 4 || version == 5) { buffer = ByteBuffer.allocate(14); channel.read(buffer); buffer.flip(); buffer.get(signature); if (!".ra4".equals(new String(signature, StandardCharsets.US_ASCII))) { LOGGER.debug("Invalid RealAudio 2.0 signature \"{}\"", new String(signature, StandardCharsets.US_ASCII)); return false; } reportedDataSize = buffer.getInt(); buffer.getShort(); //skip version repeated reportedHeaderSize = buffer.getInt(); buffer = ByteBuffer.allocate(reportedHeaderSize); channel.read(buffer); buffer.flip(); buffer.getShort(); // skip codec flavor buffer.getInt(); // skip coded frame size buffer.getInt(); // skip unknown long bytesPerMinute = buffer.getInt() & 0xFFFFFFFFL; buffer.getInt(); // skip unknown buffer.getShort(); // skip sub packet buffer.getShort(); // skip frame size buffer.getShort(); // skip sub packet size buffer.getShort(); // skip unknown if (version == 5) { buffer.position(buffer.position() + 6); // skip unknown } short sampleRate = buffer.getShort(); buffer.getShort(); // skip unknown short sampleSize = buffer.getShort(); short nrChannels = buffer.getShort(); byte[] fourCC; if (version == 4) { buffer.position(buffer.get() + buffer.position()); // skip interleaver id fourCC = new byte[buffer.get()]; buffer.get(fourCC); } else { buffer.getFloat(); // skip deinterlace id fourCC = new byte[4]; buffer.get(fourCC); } String fourCCString = new String(fourCC, StandardCharsets.US_ASCII).toLowerCase(Locale.ROOT); switch (fourCCString) { case "lpcJ": audio.setCodecA(FormatConfiguration.REALAUDIO_14_4); break; case "28_8": audio.setCodecA(FormatConfiguration.REALAUDIO_28_8); break; case "dnet": audio.setCodecA(FormatConfiguration.AC3); break; case "sipr": audio.setCodecA(FormatConfiguration.SIPRO); break; case "cook": audio.setCodecA(FormatConfiguration.COOK); case "atrc": audio.setCodecA(FormatConfiguration.ATRAC); case "ralf": audio.setCodecA(FormatConfiguration.RALF); case "raac": audio.setCodecA(FormatConfiguration.AAC_LC); case "racp": audio.setCodecA(FormatConfiguration.HE_AAC); default: LOGGER.debug("Unknown RealMedia codec FourCC \"{}\" - parsing failed", fourCCString); return false; } if (buffer.hasRemaining()) { parseRealAudioMetaData(buffer, audio, version); } audio.setBitRate((int) (bytesPerMinute * 8 / 60)); media.setBitrate((int) (bytesPerMinute * 8 / 60)); audio.setBitsperSample(sampleSize); audio.getAudioProperties().setNumberOfChannels(nrChannels); audio.getAudioProperties().setSampleFrequency(sampleRate); } else { LOGGER.error("Could not parse RealAudio format - unknown format version {}", version); return false; } media.getAudioTracksList().add(audio); long fileSize = 0; if (channel instanceof FileChannel) { fileSize = ((FileChannel) channel).size(); media.setSize(fileSize); } // Duration is estimated based on bitrate and might not be accurate if (audio.getBitRate() > 0) { int dataSize; if (fileSize > 0 && reportedHeaderSize > 0) { int fullHeaderSize = reportedHeaderSize + (version == 3 ? 8 : 16); if (reportedDataSize > 0) { dataSize = (int) Math.min(reportedDataSize, fileSize - fullHeaderSize); } else { dataSize = (int) (fileSize - fullHeaderSize); } } else { dataSize = reportedDataSize; } media.setDuration((double) dataSize / audio.getBitRate() * 8); } } catch (IOException e) { LOGGER.debug("Error while trying to parse RealAudio version 1 or 2: {}", e.getMessage()); LOGGER.trace("", e); return false; } if (PMS.getConfiguration() != null && !PMS.getConfiguration().getAudioThumbnailMethod().equals(CoverSupplier.NONE) && (StringUtils.isNotBlank(media.getFirstAudioTrack().getSongname()) || StringUtils.isNotBlank(media.getFirstAudioTrack().getArtist()))) { ID3v1Tag tag = new ID3v1Tag(); if (StringUtils.isNotBlank(media.getFirstAudioTrack().getSongname())) { tag.setTitle(media.getFirstAudioTrack().getSongname()); } if (StringUtils.isNotBlank(media.getFirstAudioTrack().getArtist())) { tag.setArtist(media.getFirstAudioTrack().getArtist()); } try { media.setThumb(DLNAThumbnail.toThumbnail(CoverUtil.get().getThumbnail(tag), 640, 480, ScaleType.MAX, ImageFormat.SOURCE, false)); } catch (IOException e) { LOGGER.error("An error occurred while generating thumbnail for RealAudio source: [\"{}\", \"{}\"]", tag.getFirstTitle(), tag.getFirstArtist()); } } media.setThumbready(true); media.setMediaparsed(true); return true; }
From source file:au.org.ala.layers.intersect.Grid.java
public float[] getGrid() { int maxArrayLength = Integer.MAX_VALUE - 10; if (grid_data != null) { return grid_data; }/*from w w w. ja va2 s . c o m*/ Grid loadedAlready = getLoadedGrid(filename); if (loadedAlready != null && loadedAlready.grid_data != null) { return loadedAlready.grid_data; } int length = nrows * ncols; float[] ret = new float[length]; RandomAccessFile afile = null; File f2 = new File(filename + ".GRI"); try { //read of random access file can throw an exception if (!f2.exists()) { afile = new RandomAccessFile(filename + ".gri", "r"); } else { afile = new RandomAccessFile(filename + ".GRI", "r"); } byte[] b = new byte[(int) Math.min(afile.length(), maxArrayLength)]; int i = 0; int max = 0; int len; while ((len = afile.read(b)) > 0) { ByteBuffer bb = ByteBuffer.wrap(b); if (byteorderLSB) { bb.order(ByteOrder.LITTLE_ENDIAN); } if (datatype.equalsIgnoreCase("UBYTE")) { max += len; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = bb.get(); if (ret[i] < 0) { ret[i] += 256; } } } else if (datatype.equalsIgnoreCase("BYTE")) { max += len; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = bb.get(); } } else if (datatype.equalsIgnoreCase("SHORT")) { max += len / 2; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = bb.getShort(); } } else if (datatype.equalsIgnoreCase("INT")) { max += len / 4; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = bb.getInt(); } } else if (datatype.equalsIgnoreCase("LONG")) { max += len / 8; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = bb.getLong(); } } else if (datatype.equalsIgnoreCase("FLOAT")) { max += len / 4; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = bb.getFloat(); } } else if (datatype.equalsIgnoreCase("DOUBLE")) { max += len / 8; max = Math.min(max, ret.length); for (; i < max; i++) { ret[i] = (float) bb.getDouble(); } } else { // / should not happen; catch anyway... max += len / 4; for (; i < max; i++) { ret[i] = Float.NaN; } } } //replace not a number for (i = 0; i < length; i++) { if ((float) ret[i] == (float) nodatavalue) { ret[i] = Float.NaN; } else { ret[i] *= rescale; } } } catch (Exception e) { logger.error("An error has occurred - probably a file error", e); } finally { if (afile != null) { try { afile.close(); } catch (Exception e) { logger.error(e.getMessage(), e); } } } grid_data = ret; return ret; }
From source file:au.org.ala.layers.intersect.Grid.java
public void getClassInfo(Map<Float, float[]> info) { long length = ((long) nrows) * ((long) ncols); RandomAccessFile afile = null; File f2 = new File(filename + ".GRI"); try { //read of random access file can throw an exception if (!f2.exists()) { afile = new RandomAccessFile(filename + ".gri", "r"); } else {/* w w w. java 2 s. c o m*/ afile = new RandomAccessFile(filename + ".GRI", "r"); } byte[] b = new byte[65536]; long i = 0; long max = 0; long len; float v; float ndv = (float) nodatavalue; while ((len = afile.read(b)) > 0) { ByteBuffer bb = ByteBuffer.wrap(b); if (byteorderLSB) { bb.order(ByteOrder.LITTLE_ENDIAN); } if (datatype.equalsIgnoreCase("UBYTE")) { max += len; max = Math.min(max, length); for (; i < max; i++) { v = bb.get(); if (v < 0) v += 256; if (v != ndv) updatesStats(info, i, v * rescale); } } else if (datatype.equalsIgnoreCase("BYTE")) { max += len; max = Math.min(max, length); for (; i < max; i++) { v = bb.get(); if (v != ndv) updatesStats(info, i, v * rescale); } } else if (datatype.equalsIgnoreCase("SHORT")) { max += len / 2; max = Math.min(max, length); for (; i < max; i++) { v = bb.getShort(); if (v != ndv) updatesStats(info, i, v * rescale); } } else if (datatype.equalsIgnoreCase("INT")) { max += len / 4; max = Math.min(max, length); for (; i < max; i++) { v = bb.getInt(); if (v != ndv) updatesStats(info, i, v * rescale); } } else if (datatype.equalsIgnoreCase("LONG")) { max += len / 8; max = Math.min(max, length); for (; i < max; i++) { v = bb.getLong(); if (v != ndv) updatesStats(info, i, v * rescale); } } else if (datatype.equalsIgnoreCase("FLOAT")) { max += len / 4; max = Math.min(max, length); for (; i < max; i++) { v = bb.getFloat(); if (v != ndv) updatesStats(info, i, v * rescale); } } else if (datatype.equalsIgnoreCase("DOUBLE")) { max += len / 8; max = Math.min(max, length); for (; i < max; i++) { v = (float) bb.getDouble(); if (v != ndv) updatesStats(info, i, v * rescale); } } else { max += len / 4; for (; i < max; i++) { // should not happen; catch anyway... } } } } catch (Exception e) { logger.error("An error has occurred getting grid class stats", e); } finally { if (afile != null) { try { afile.close(); } catch (Exception e) { logger.error(e.getMessage(), e); } } } }
From source file:au.org.ala.layers.intersect.Grid.java
/** * Increase sampleEveryNthPoint to return a smaller grid. * * Grid max and min values may be skipped. * * This does not used previously cached data. * * @param sampleEveryNthPoint/*from w w w . j a v a 2s .c om*/ * @return */ public float[] getGrid(int sampleEveryNthPoint) { int maxArrayLength = Integer.MAX_VALUE - 10; if (subgrids != null) { //sample points int size = 1000; double[][] points = new double[size * size][2]; int pos = 0; for (int i = 0; i < 1000; i++) { for (int j = 0; j < 1000; j++) { points[pos][0] = xmin + (xmax - xmin) * j / (double) size; points[pos][1] = ymax - (ymax - ymin) * i / (double) size; pos++; } } return getValues3(points, 64); } int length = (nrows / sampleEveryNthPoint) * (ncols); float[] ret = new float[length]; RandomAccessFile afile = null; File f2 = new File(filename + ".GRI"); try { //read of random access file can throw an exception if (!f2.exists()) { afile = new RandomAccessFile(filename + ".gri", "r"); } else { afile = new RandomAccessFile(filename + ".GRI", "r"); } int sz = (int) Math.min(afile.length() / sampleEveryNthPoint / sampleEveryNthPoint, maxArrayLength); sz += 8 - sz % 8; byte[] b = new byte[sz]; long i = 0; long max = 0; int len; while ((len = afile.read(b)) > 0) { ByteBuffer bb = ByteBuffer.wrap(b); if (byteorderLSB) { bb.order(ByteOrder.LITTLE_ENDIAN); } if (datatype.equalsIgnoreCase("UBYTE")) { max += len; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / sampleEveryNthPoint)] = bb.get(); if (ret[(int) (i / sampleEveryNthPoint)] < 0) { ret[(int) (i / sampleEveryNthPoint)] += 256; } } } else if (datatype.equalsIgnoreCase("BYTE")) { max += len; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / sampleEveryNthPoint)] = bb.get(); } } else if (datatype.equalsIgnoreCase("SHORT")) { max += len / 2; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / sampleEveryNthPoint)] = bb.getShort(); } } else if (datatype.equalsIgnoreCase("INT")) { max += len / 4; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / sampleEveryNthPoint)] = bb.getInt(); } } else if (datatype.equalsIgnoreCase("LONG")) { max += len / 8; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / sampleEveryNthPoint)] = bb.getLong(); } } else if (datatype.equalsIgnoreCase("FLOAT")) { max += len / 4; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / sampleEveryNthPoint)] = bb.getFloat(); } } else if (datatype.equalsIgnoreCase("DOUBLE")) { max += len / 8; max = Math.min(max, ret.length * (long) sampleEveryNthPoint); for (; i < max; i++) { ret[(int) (i / (long) sampleEveryNthPoint)] = (float) bb.getDouble(); } } else { // / should not happen; catch anyway... max += len / 4; for (; i < max; i++) { ret[(int) (i / (long) sampleEveryNthPoint)] = Float.NaN; } } } //replace not a number for (i = 0; i < length; i++) { if ((float) ret[(int) i] == (float) nodatavalue) { ret[(int) i] = Float.NaN; } else { ret[(int) i] *= rescale; } } } catch (Exception e) { logger.error("An error has occurred - probably a file error", e); } finally { if (afile != null) { try { afile.close(); } catch (Exception e) { logger.error(e.getMessage(), e); } } } grid_data = ret; return ret; }
From source file:au.org.ala.layers.intersect.Grid.java
float[] getGrid(double xmin, double ymin, double xmax, double ymax) { //expects largest y at the top //expects input ranges inside of grid ranges int width = (int) ((xmax - xmin) / xres); int height = (int) ((ymax - ymin) / yres); int startx = (int) ((xmin - this.xmin) / xres); int endx = startx + width; int starty = (int) ((ymin - this.ymin) / yres); //int endy = starty + height; int length = width * height; float[] ret = new float[length]; int pos = 0;/*from w w w . jav a 2 s. c o m*/ int i; RandomAccessFile afile = null; File f2 = new File(filename + ".GRI"); int size = 4; if (datatype.equals("BYTE") || datatype.equals("UBYTE")) { size = 1; } else if (datatype.equals("SHORT")) { size = 2; } else if (datatype.equals("INT")) { size = 4; } else if (datatype.equals("LONG")) { size = 8; } else if (datatype.equals("FLOAT")) { size = 4; } else if (datatype.equals("DOUBLE")) { size = 8; } try { //read of random access file can throw an exception if (!f2.exists()) { afile = new RandomAccessFile(filename + ".gri", "r"); } else { afile = new RandomAccessFile(filename + ".GRI", "r"); } //seek to first raster afile.seek(((long) this.ncols) * starty * size); //read relevant rasters int readSize = this.ncols * height * size; int readLen = this.ncols * height; byte[] b = new byte[readSize]; afile.read(b); ByteBuffer bb = ByteBuffer.wrap(b); if (byteorderLSB) { bb.order(ByteOrder.LITTLE_ENDIAN); } if (datatype.equalsIgnoreCase("BYTE")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.get(); } else { ret[pos++] = bb.get(); } } } else if (datatype.equalsIgnoreCase("UBYTE")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.get(); } else { ret[pos] = bb.get(); if (ret[pos] < 0) { ret[pos] += 256; } pos++; } } } else if (datatype.equalsIgnoreCase("SHORT")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.getShort(); } else { ret[pos++] = bb.getShort(); } } } else if (datatype.equalsIgnoreCase("INT")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.getInt(); } else { ret[pos++] = bb.getInt(); } } } else if (datatype.equalsIgnoreCase("LONG")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.getLong(); } else { ret[pos++] = bb.getLong(); } } } else if (datatype.equalsIgnoreCase("FLOAT")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.getFloat(); } else { ret[pos++] = bb.getFloat(); } } } else if (datatype.equalsIgnoreCase("DOUBLE")) { for (i = 0; i < readLen; i++) { int x = i % this.ncols; if (x < startx || x >= endx) { bb.getDouble(); } else { ret[pos++] = (float) bb.getDouble(); } } } else { // / should not happen; catch anyway... for (i = 0; i < length; i++) { ret[i] = Float.NaN; } } //replace not a number for (i = 0; i < length; i++) { if ((float) ret[i] == (float) nodatavalue) { ret[i] = Float.NaN; } else { ret[i] *= rescale; } } } catch (Exception e) { logger.error("GRID: " + e.toString(), e); } finally { if (afile != null) { try { afile.close(); } catch (Exception e) { logger.error(e.getMessage(), e); } } } grid_data = ret; return ret; }