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The source code is released under:
GNU General Public License
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/* * Copyright (C) 2011-2013 GUIGUI Simon, fyhertz@gmail.com * /*from w ww . j a v a2s .c om*/ * This file is part of Spydroid (http://code.google.com/p/spydroid-ipcamera/) * * Spydroid is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This source 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 for more details. * * You should have received a copy of the GNU General Public License * along with this source code; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package net.majorkernelpanic.streaming.video; import java.util.ArrayList; import java.util.HashMap; import android.annotation.SuppressLint; import android.media.MediaCodecInfo; import android.media.MediaCodecList; import android.os.Build; import android.util.Log; import android.util.SparseArray; @SuppressLint("InlinedApi") public class CodecManager { public final static String TAG = "CodecManager"; public static final int[] SUPPORTED_COLOR_FORMATS = { MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Planar, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420SemiPlanar }; /** * There currently is no way to know if an encoder is software or hardware from the MediaCodecInfo class, * so we need to maintain a list of known software encoders. */ public static final String[] SOFTWARE_ENCODERS = { "OMX.google.h264.encoder" }; /** * Contains a list of encoders and color formats that we may use with a {@link CodecManager.Translator}. */ static class Codecs { /** A hardware encoder supporting a color format we can use. */ public String hardwareCodec; public int hardwareColorFormat; /** A software encoder supporting a color format we can use. */ public String softwareCodec; public int softwareColorFormat; } /** * Contains helper functions to choose an encoder and a color format. */ static class Selector { private static HashMap<String,SparseArray<ArrayList<String>>> sHardwareCodecs = new HashMap<String, SparseArray<ArrayList<String>>>(); private static HashMap<String,SparseArray<ArrayList<String>>> sSoftwareCodecs = new HashMap<String, SparseArray<ArrayList<String>>>(); /** * Determines the most appropriate encoder to compress the video from the Camera */ public static Codecs findCodecsFormMimeType(String mimeType, boolean tryColorFormatSurface) { findSupportedColorFormats(mimeType); SparseArray<ArrayList<String>> hardwareCodecs = sHardwareCodecs.get(mimeType); SparseArray<ArrayList<String>> softwareCodecs = sSoftwareCodecs.get(mimeType); Codecs list = new Codecs(); // On devices running 4.3, we need an encoder supporting the color format used to work with a Surface if (Build.VERSION.SDK_INT>=18 && tryColorFormatSurface) { int colorFormatSurface = MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface; try { // We want a hardware encoder list.hardwareCodec = hardwareCodecs.get(colorFormatSurface).get(0); list.hardwareColorFormat = colorFormatSurface; } catch (Exception e) {} try { // We want a software encoder list.softwareCodec = softwareCodecs.get(colorFormatSurface).get(0); list.softwareColorFormat = colorFormatSurface; } catch (Exception e) {} if (list.hardwareCodec != null) { Log.v(TAG,"Choosen primary codec: "+list.hardwareCodec+" with color format: "+list.hardwareColorFormat); } else { Log.e(TAG,"No supported hardware codec found !"); } if (list.softwareCodec != null) { Log.v(TAG,"Choosen secondary codec: "+list.hardwareCodec+" with color format: "+list.hardwareColorFormat); } else { Log.e(TAG,"No supported software codec found !"); } return list; } for (int i=0;i<SUPPORTED_COLOR_FORMATS.length;i++) { try { list.hardwareCodec = hardwareCodecs.get(SUPPORTED_COLOR_FORMATS[i]).get(0); list.hardwareColorFormat = SUPPORTED_COLOR_FORMATS[i]; break; } catch (Exception e) {} } for (int i=0;i<SUPPORTED_COLOR_FORMATS.length;i++) { try { list.softwareCodec = softwareCodecs.get(SUPPORTED_COLOR_FORMATS[i]).get(0); list.softwareColorFormat = SUPPORTED_COLOR_FORMATS[i]; break; } catch (Exception e) {} } if (list.hardwareCodec != null) { Log.v(TAG,"Choosen primary codec: "+list.hardwareCodec+" with color format: "+list.hardwareColorFormat); } else { Log.e(TAG,"No supported hardware codec found !"); } if (list.softwareCodec != null) { Log.v(TAG,"Choosen secondary codec: "+list.hardwareCodec+" with color format: "+list.softwareColorFormat); } else { Log.e(TAG,"No supported software codec found !"); } return list; } /** * Returns an associative array of the supported color formats and the names of the encoders for a given mime type * This can take up to sec on certain phones the first time you run it... **/ @SuppressLint("NewApi") static private void findSupportedColorFormats(String mimeType) { SparseArray<ArrayList<String>> softwareCodecs = new SparseArray<ArrayList<String>>(); SparseArray<ArrayList<String>> hardwareCodecs = new SparseArray<ArrayList<String>>(); if (sSoftwareCodecs.containsKey(mimeType)) { return; } Log.v(TAG,"Searching supported color formats for mime type \""+mimeType+"\"..."); // We loop through the encoders, apparently this can take up to a sec (testes on a GS3) for(int j = MediaCodecList.getCodecCount() - 1; j >= 0; j--){ MediaCodecInfo codecInfo = MediaCodecList.getCodecInfoAt(j); if (!codecInfo.isEncoder()) continue; String[] types = codecInfo.getSupportedTypes(); for (int i = 0; i < types.length; i++) { if (types[i].equalsIgnoreCase(mimeType)) { MediaCodecInfo.CodecCapabilities capabilities = codecInfo.getCapabilitiesForType(mimeType); boolean software = false; for (int k=0;k<SOFTWARE_ENCODERS.length;k++) { if (codecInfo.getName().equalsIgnoreCase(SOFTWARE_ENCODERS[i])) { software = true; } } // And through the color formats supported for (int k = 0; k < capabilities.colorFormats.length; k++) { int format = capabilities.colorFormats[k]; if (software) { if (softwareCodecs.get(format) == null) softwareCodecs.put(format, new ArrayList<String>()); softwareCodecs.get(format).add(codecInfo.getName()); } else { if (hardwareCodecs.get(format) == null) hardwareCodecs.put(format, new ArrayList<String>()); hardwareCodecs.get(format).add(codecInfo.getName()); } } } } } // Logs the supported color formats on the phone StringBuilder e = new StringBuilder(); e.append("Supported color formats on this phone: "); for (int i=0;i<softwareCodecs.size();i++) e.append(softwareCodecs.keyAt(i)+", "); for (int i=0;i<hardwareCodecs.size();i++) e.append(hardwareCodecs.keyAt(i)+(i==hardwareCodecs.size()-1?".":", ")); Log.v(TAG, e.toString()); sSoftwareCodecs.put(mimeType, softwareCodecs); sHardwareCodecs.put(mimeType, hardwareCodecs); return; } } static class Translator { private int mOutputColorFormat; private int mWidth; private int mHeight; private int mYStride; private int mUVStride; private int mYSize; private int mUVSize; private int bufferSize; private int i; private byte[] tmp; public Translator(int outputColorFormat, int width, int height) { mOutputColorFormat = outputColorFormat; mWidth = width; mHeight = height; mYStride = (int) Math.ceil(mWidth / 16.0) * 16; mUVStride = (int) Math.ceil( (mYStride / 2) / 16.0) * 16; mYSize = mYStride * mHeight; mUVSize = mUVStride * mHeight / 2; bufferSize = mYSize + mUVSize * 2; tmp = new byte[mUVSize*2]; } public int getBufferSize() { return bufferSize; } public int getUVStride() { return mUVStride; } public int getYStride() { return mYStride; } public byte[] translate(byte[] buffer) { if (mOutputColorFormat == MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Planar) { // FIXME: May be issues because of padding here :/ int wh4 = bufferSize/6; //wh4 = width*height/4 byte tmp; for (i=wh4*4; i<wh4*5; i++) { tmp = buffer[i]; buffer[i] = buffer[i+wh4]; buffer[i+wh4] = tmp; } } else if (mOutputColorFormat == MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420SemiPlanar) { // We need to interleave the U and V channel System.arraycopy(buffer, mYSize, tmp, 0, mUVSize*2); // Y for (i = 0; i < mUVSize; i++) { buffer[mYSize + i*2] = tmp[i + mUVSize]; // Cb (U) buffer[mYSize + i*2+1] = tmp[i]; // Cr (V) } } return buffer; } } }