batik-codec/src/main/java/org/apache/batik/ext/awt/image/codec/png/PNGImageDecoder.java [360:485]: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - throws IOException { if (!stream.markSupported()) { stream = new BufferedInputStream(stream); } DataInputStream distream = new DataInputStream(stream); if (decodeParam == null) { decodeParam = new PNGDecodeParam(); } this.decodeParam = decodeParam; // Get parameter values this.suppressAlpha = decodeParam.getSuppressAlpha(); this.expandPalette = decodeParam.getExpandPalette(); this.output8BitGray = decodeParam.getOutput8BitGray(); this.expandGrayAlpha = decodeParam.getExpandGrayAlpha(); if (decodeParam.getPerformGammaCorrection()) { this.userExponent = decodeParam.getUserExponent(); this.displayExponent = decodeParam.getDisplayExponent(); performGammaCorrection = true; output8BitGray = true; } this.generateEncodeParam = decodeParam.getGenerateEncodeParam(); if (emitProperties) { properties.put("file_type", "PNG v. 1.0"); } try { long magic = distream.readLong(); if (magic != 0x89504e470d0a1a0aL) { String msg = PropertyUtil.getString("PNGImageDecoder0"); throw new RuntimeException(msg); } } catch (Exception e) { e.printStackTrace(); String msg = PropertyUtil.getString("PNGImageDecoder1"); throw new RuntimeException(msg); } do { try { PNGChunk chunk; String chunkType = getChunkType(distream); if (chunkType.equals("IHDR")) { chunk = readChunk(distream); parse_IHDR_chunk(chunk); } else if (chunkType.equals("PLTE")) { chunk = readChunk(distream); parse_PLTE_chunk(chunk); } else if (chunkType.equals("IDAT")) { chunk = readChunk(distream); streamVec.add(new ByteArrayInputStream(chunk.getData())); } else if (chunkType.equals("IEND")) { chunk = readChunk(distream); parse_IEND_chunk(chunk); break; // fall through to the bottom } else if (chunkType.equals("bKGD")) { chunk = readChunk(distream); parse_bKGD_chunk(chunk); } else if (chunkType.equals("cHRM")) { chunk = readChunk(distream); parse_cHRM_chunk(chunk); } else if (chunkType.equals("gAMA")) { chunk = readChunk(distream); parse_gAMA_chunk(chunk); } else if (chunkType.equals("hIST")) { chunk = readChunk(distream); parse_hIST_chunk(chunk); } else if (chunkType.equals("iCCP")) { chunk = readChunk(distream); parse_iCCP_chunk(chunk); } else if (chunkType.equals("pHYs")) { chunk = readChunk(distream); parse_pHYs_chunk(chunk); } else if (chunkType.equals("sBIT")) { chunk = readChunk(distream); parse_sBIT_chunk(chunk); } else if (chunkType.equals("sRGB")) { chunk = readChunk(distream); parse_sRGB_chunk(chunk); } else if (chunkType.equals("tEXt")) { chunk = readChunk(distream); parse_tEXt_chunk(chunk); } else if (chunkType.equals("tIME")) { chunk = readChunk(distream); parse_tIME_chunk(chunk); } else if (chunkType.equals("tRNS")) { chunk = readChunk(distream); parse_tRNS_chunk(chunk); } else if (chunkType.equals("zTXt")) { chunk = readChunk(distream); parse_zTXt_chunk(chunk); } else { chunk = readChunk(distream); // Output the chunk data in raw form String type = chunk.getTypeString(); byte[] data = chunk.getData(); if (encodeParam != null) { encodeParam.addPrivateChunk(type, data); } if (emitProperties) { String key = "chunk_" + chunkIndex++ + ':' + type; properties.put(key.toLowerCase(), data); } } } catch (Exception e) { e.printStackTrace(); String msg = PropertyUtil.getString("PNGImageDecoder2"); throw new RuntimeException(msg); } } while (true); // Final post-processing if (significantBits == null) { significantBits = new int[inputBands]; for (int i = 0; i < inputBands; i++) { significantBits[i] = bitDepth; } if (emitProperties) { properties.put("significant_bits", significantBits); - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - batik-codec/src/main/java/org/apache/batik/ext/awt/image/codec/png/PNGRed.java [354:479]: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - throws IOException { if (!stream.markSupported()) { stream = new BufferedInputStream(stream); } DataInputStream distream = new DataInputStream(stream); if (decodeParam == null) { decodeParam = new PNGDecodeParam(); } this.decodeParam = decodeParam; // Get parameter values this.suppressAlpha = decodeParam.getSuppressAlpha(); this.expandPalette = decodeParam.getExpandPalette(); this.output8BitGray = decodeParam.getOutput8BitGray(); this.expandGrayAlpha = decodeParam.getExpandGrayAlpha(); if (decodeParam.getPerformGammaCorrection()) { this.userExponent = decodeParam.getUserExponent(); this.displayExponent = decodeParam.getDisplayExponent(); performGammaCorrection = true; output8BitGray = true; } this.generateEncodeParam = decodeParam.getGenerateEncodeParam(); if (emitProperties) { properties.put("file_type", "PNG v. 1.0"); } try { long magic = distream.readLong(); if (magic != 0x89504e470d0a1a0aL) { String msg = PropertyUtil.getString("PNGImageDecoder0"); throw new RuntimeException(msg); } } catch (Exception e) { e.printStackTrace(); String msg = PropertyUtil.getString("PNGImageDecoder1"); throw new RuntimeException(msg); } do { try { PNGChunk chunk; String chunkType = getChunkType(distream); if (chunkType.equals("IHDR")) { chunk = readChunk(distream); parse_IHDR_chunk(chunk); } else if (chunkType.equals("PLTE")) { chunk = readChunk(distream); parse_PLTE_chunk(chunk); } else if (chunkType.equals("IDAT")) { chunk = readChunk(distream); streamVec.add(new ByteArrayInputStream(chunk.getData())); } else if (chunkType.equals("IEND")) { chunk = readChunk(distream); parse_IEND_chunk(chunk); break; // fall through to the bottom } else if (chunkType.equals("bKGD")) { chunk = readChunk(distream); parse_bKGD_chunk(chunk); } else if (chunkType.equals("cHRM")) { chunk = readChunk(distream); parse_cHRM_chunk(chunk); } else if (chunkType.equals("gAMA")) { chunk = readChunk(distream); parse_gAMA_chunk(chunk); } else if (chunkType.equals("hIST")) { chunk = readChunk(distream); parse_hIST_chunk(chunk); } else if (chunkType.equals("iCCP")) { chunk = readChunk(distream); parse_iCCP_chunk(chunk); } else if (chunkType.equals("pHYs")) { chunk = readChunk(distream); parse_pHYs_chunk(chunk); } else if (chunkType.equals("sBIT")) { chunk = readChunk(distream); parse_sBIT_chunk(chunk); } else if (chunkType.equals("sRGB")) { chunk = readChunk(distream); parse_sRGB_chunk(chunk); } else if (chunkType.equals("tEXt")) { chunk = readChunk(distream); parse_tEXt_chunk(chunk); } else if (chunkType.equals("tIME")) { chunk = readChunk(distream); parse_tIME_chunk(chunk); } else if (chunkType.equals("tRNS")) { chunk = readChunk(distream); parse_tRNS_chunk(chunk); } else if (chunkType.equals("zTXt")) { chunk = readChunk(distream); parse_zTXt_chunk(chunk); } else { chunk = readChunk(distream); // Output the chunk data in raw form String type = chunk.getTypeString(); byte[] data = chunk.getData(); if (encodeParam != null) { encodeParam.addPrivateChunk(type, data); } if (emitProperties) { String key = "chunk_" + chunkIndex++ + ':' + type; properties.put(key.toLowerCase(), data); } } } catch (Exception e) { e.printStackTrace(); String msg = PropertyUtil.getString("PNGImageDecoder2"); throw new RuntimeException(msg); } } while (true); // Final post-processing if (significantBits == null) { significantBits = new int[inputBands]; for (int i = 0; i < inputBands; i++) { significantBits[i] = bitDepth; } if (emitProperties) { properties.put("significant_bits", significantBits); - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -