基于ffmpeg的音频处理Java SDK

package com.ypp.jave; import java.io.File; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Hashtable; import java.util.StringTokenizer; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Encoder { private static final Pattern FORMAT_PATTERN = Pattern.compile("^\\s*([D ])([E ])\\s+([\\w,]+)\\s+.+$"); private static final Pattern ENCODER_DECODER_PATTERN = Pattern .compile("^\\s*([D.])([E.])([AVS.])([I.])([L.])([S.])\\s+(.+?)\\s+(.+)$", 2); private static final Pattern PROGRESS_INFO_PATTERN = Pattern.compile("\\s*(\\w+)\\s*=\\s*(\\S+)\\s*", 2); private static final Pattern SIZE_PATTERN = Pattern.compile("(\\d+)x(\\d+)", 2); private static final Pattern FRAME_RATE_PATTERN = Pattern.compile("([\\d.]+)\\s+(?:fps|tb\\(r\\))", 2); private static final Pattern BIT_RATE_PATTERN = Pattern.compile("(\\d+)\\s+kb/s", 2); private static final Pattern SAMPLING_RATE_PATTERN = Pattern.compile("(\\d+)\\s+Hz", 2); private static final Pattern CHANNELS_PATTERN = Pattern.compile("(mono|stereo)", 2); private static final Pattern SUCCESS_PATTERN = Pattern.compile("^\\s*video\\:\\S+\\s+audio\\:\\S+\\s+.*$", 2); private static final Pattern TIME_PATTERN = Pattern.compile("^(\\d\\d):(\\d\\d):(\\d\\d)\\.(\\d*)$", 2); private FFMPEGLocator locator; public Encoder() { this.locator = new DefaultFFMPEGLocator(); } public Encoder(FFMPEGLocator locator) { this.locator = locator; } public String[] getAudioDecoders() throws EncoderException { ArrayList res = new ArrayList(); FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-codecs"); try { ffmpeg.execute(); RBufferedReader reader = null; reader = new RBufferedReader(new InputStreamReader(ffmpeg.getInputStream())); boolean evaluate = false; String line; while ((line = reader.readLine()) != null) { if (line.trim().length() != 0) { if (evaluate) { Matcher matcher = ENCODER_DECODER_PATTERN.matcher(line); if (!matcher.matches()) break; String decoderFlag = matcher.group(1); String audioVideoFlag = matcher.group(3); if (("D".equals(decoderFlag)) && ("A".equals(audioVideoFlag))) { String name = matcher.group(7); res.add(name); } } else if (line.trim().equals("-------")) { evaluate = true; } } } } catch (IOException e) { throw new EncoderException(e); } finally { ffmpeg.destroy(); } int size = res.size(); String[] ret = new String[size]; for (int i = 0; i < size; i++) { ret[i] = ((String) res.get(i)); } return ret; } public String[] getAudioEncoders() throws EncoderException { ArrayList res = new ArrayList(); FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-codecs"); try { ffmpeg.execute(); RBufferedReader reader = null; reader = new RBufferedReader(new InputStreamReader(ffmpeg.getInputStream())); boolean evaluate = false; String line; while ((line = reader.readLine()) != null) { if (line.trim().length() != 0) { if (evaluate) { Matcher matcher = ENCODER_DECODER_PATTERN.matcher(line); if (!matcher.matches()) break; String encoderFlag = matcher.group(2); String audioVideoFlag = matcher.group(3); if (("E".equals(encoderFlag)) && ("A".equals(audioVideoFlag))) { String name = matcher.group(7); res.add(name); } } else if (line.trim().equals("-------")) { evaluate = true; } } } } catch (IOException e) { throw new EncoderException(e); } finally { ffmpeg.destroy(); } int size = res.size(); String[] ret = new String[size]; for (int i = 0; i < size; i++) { ret[i] = ((String) res.get(i)); } return ret; } public String[] getVideoDecoders() throws EncoderException { ArrayList res = new ArrayList(); FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-codecs"); try { ffmpeg.execute(); RBufferedReader reader = null; reader = new RBufferedReader(new InputStreamReader(ffmpeg.getInputStream())); boolean evaluate = false; String line; while ((line = reader.readLine()) != null) { if (line.trim().length() != 0) { if (evaluate) { Matcher matcher = ENCODER_DECODER_PATTERN.matcher(line); if (!matcher.matches()) break; String decoderFlag = matcher.group(1); String audioVideoFlag = matcher.group(3); if (("D".equals(decoderFlag)) && ("V".equals(audioVideoFlag))) { String name = matcher.group(7); res.add(name); } } else if (line.trim().equals("-------")) { evaluate = true; } } } } catch (IOException e) { throw new EncoderException(e); } finally { ffmpeg.destroy(); } int size = res.size(); String[] ret = new String[size]; for (int i = 0; i < size; i++) { ret[i] = ((String) res.get(i)); } return ret; } public String[] getVideoEncoders() throws EncoderException { ArrayList res = new ArrayList(); FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-codecs"); try { ffmpeg.execute(); RBufferedReader reader = null; reader = new RBufferedReader(new InputStreamReader(ffmpeg.getInputStream())); boolean evaluate = false; String line; while ((line = reader.readLine()) != null) { if (line.trim().length() != 0) { if (evaluate) { Matcher matcher = ENCODER_DECODER_PATTERN.matcher(line); if (!matcher.matches()) break; String encoderFlag = matcher.group(2); String audioVideoFlag = matcher.group(3); if (("E".equals(encoderFlag)) && ("V".equals(audioVideoFlag))) { String name = matcher.group(7); res.add(name); } } else if (line.trim().equals("-------")) { evaluate = true; } } } } catch (IOException e) { throw new EncoderException(e); } finally { ffmpeg.destroy(); } int size = res.size(); String[] ret = new String[size]; for (int i = 0; i < size; i++) { ret[i] = ((String) res.get(i)); } return ret; } public String[] getSupportedEncodingFormats() throws EncoderException { ArrayList res = new ArrayList(); FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-formats"); try { ffmpeg.execute(); RBufferedReader reader = null; reader = new RBufferedReader(new InputStreamReader(ffmpeg.getInputStream())); boolean evaluate = false; String line; while ((line = reader.readLine()) != null) { if (line.trim().length() != 0) { if (evaluate) { Matcher matcher = FORMAT_PATTERN.matcher(line); if (!matcher.matches()) break; String encoderFlag = matcher.group(2); if ("E".equals(encoderFlag)) { String aux = matcher.group(3); StringTokenizer st = new StringTokenizer(aux, ","); while (st.hasMoreTokens()) { String token = st.nextToken().trim(); if (!res.contains(token)) { res.add(token); } } } } else if (line.trim().equals("File formats:")) { reader.readLine(); reader.readLine(); reader.readLine(); evaluate = true; } } } } catch (IOException e) { throw new EncoderException(e); } finally { ffmpeg.destroy(); } int size = res.size(); String[] ret = new String[size]; for (int i = 0; i < size; i++) { ret[i] = ((String) res.get(i)); } return ret; } public String[] getSupportedDecodingFormats() throws EncoderException { ArrayList res = new ArrayList(); FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-formats"); try {