Prepare MediaCodecVideoEncoder for surface textures.

talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoEncoder.java

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 78 matching lines @@
   // see /hardware/qcom/media/mm-core/inc/OMX_QCOMExtns.h
   private static final int
     COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m = 0x7FA30C04;
   // Allowable color formats supported by codec - in order of preference.
   private static final int[] supportedColorList = {
     CodecCapabilities.COLOR_FormatYUV420Planar,
     CodecCapabilities.COLOR_FormatYUV420SemiPlanar,
     CodecCapabilities.COLOR_QCOM_FormatYUV420SemiPlanar,
     COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m
   };
-  private int colorFormat;
-  // Video encoder type.
   private VideoCodecType type;
+  private int colorFormat;  // Used by native code.
+
   // SPS and PPS NALs (Config frame) for H.264.
   private ByteBuffer configData = null;
 
-  private MediaCodecVideoEncoder() {
+  MediaCodecVideoEncoder() {
     mediaCodecThread = null;
   }
 
   // Helper struct for findHwEncoder() below.
   private static class EncoderProperties {
     public EncoderProperties(String codecName, int colorFormat) {
       this.codecName = codecName;
       this.colorFormat = colorFormat;
     }
     public final String codecName; // OpenMax component name for HW codec.
@@ skipping 86 matching lines @@
   static MediaCodec createByCodecName(String codecName) {
     try {
       // In the L-SDK this call can throw IOException so in order to work in
       // both cases catch an exception.
       return MediaCodec.createByCodecName(codecName);
     } catch (Exception e) {
       return null;
     }
   }
 
-  // Return the array of input buffers, or null on failure.
-  private ByteBuffer[] initEncode(
-      VideoCodecType type, int width, int height, int kbps, int fps) {
+  // Returns false if the hardware encoder currently can't be used.
+  boolean initEncode(VideoCodecType type, int width, int height, int kbps, int fps) {
     Logging.d(TAG, "Java initEncode: " + type + " : " + width + " x " + height +
-        ". @ " + kbps + " kbps. Fps: " + fps +
-        ". Color: 0x" + Integer.toHexString(colorFormat));
+        ". @ " + kbps + " kbps. Fps: " + fps + ".");
+
     if (mediaCodecThread != null) {
       throw new RuntimeException("Forgot to release()?");
     }
-    this.type = type;
     EncoderProperties properties = null;
     String mime = null;
     int keyFrameIntervalSec = 0;
     if (type == VideoCodecType.VIDEO_CODEC_VP8) {
       mime = VP8_MIME_TYPE;
       properties = findHwEncoder(VP8_MIME_TYPE, supportedVp8HwCodecPrefixes);
       keyFrameIntervalSec = 100;
     } else if (type == VideoCodecType.VIDEO_CODEC_H264) {
       mime = H264_MIME_TYPE;
       properties = findHwEncoder(H264_MIME_TYPE, supportedH264HwCodecPrefixes);
       keyFrameIntervalSec = 20;
     }
     if (properties == null) {
       throw new RuntimeException("Can not find HW encoder for " + type);
     }
+    colorFormat = properties.colorFormat;
     mediaCodecThread = Thread.currentThread();
     try {
       MediaFormat format = MediaFormat.createVideoFormat(mime, width, height);
       format.setInteger(MediaFormat.KEY_BIT_RATE, 1000 * kbps);
       format.setInteger("bitrate-mode", VIDEO_ControlRateConstant);
       format.setInteger(MediaFormat.KEY_COLOR_FORMAT, properties.colorFormat);
       format.setInteger(MediaFormat.KEY_FRAME_RATE, fps);
       format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, keyFrameIntervalSec);
       Logging.d(TAG, "  Format: " + format);
       mediaCodec = createByCodecName(properties.codecName);
+      this.type = type;
       if (mediaCodec == null) {
-        return null;
+        return false;
       }
       mediaCodec.configure(
           format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
+
       mediaCodec.start();
-      colorFormat = properties.colorFormat;
       outputBuffers = mediaCodec.getOutputBuffers();
-      ByteBuffer[] inputBuffers = mediaCodec.getInputBuffers();
-      Logging.d(TAG, "Input buffers: " + inputBuffers.length +
-          ". Output buffers: " + outputBuffers.length);
-      return inputBuffers;
+
     } catch (IllegalStateException e) {
       Logging.e(TAG, "initEncode failed", e);
-      return null;
+      return false;
     }
+    return true;
   }
 
-  private boolean encode(
+  ByteBuffer[]  getInputBuffers() {
+    ByteBuffer[] inputBuffers = mediaCodec.getInputBuffers();
+    Logging.d(TAG, "Input buffers: " + inputBuffers.length);
+    return inputBuffers;
+  }
+
+  boolean encodeBuffer(
       boolean isKeyframe, int inputBuffer, int size,
       long presentationTimestampUs) {
     checkOnMediaCodecThread();
     try {
       if (isKeyframe) {
         // Ideally MediaCodec would honor BUFFER_FLAG_SYNC_FRAME so we could
         // indicate this in queueInputBuffer() below and guarantee _this_ frame
         // be encoded as a key frame, but sadly that flag is ignored.  Instead,
         // we request a key frame "soon".
         Logging.d(TAG, "Sync frame request");
         Bundle b = new Bundle();
         b.putInt(MediaCodec.PARAMETER_KEY_REQUEST_SYNC_FRAME, 0);
         mediaCodec.setParameters(b);
       }
       mediaCodec.queueInputBuffer(
           inputBuffer, 0, size, presentationTimestampUs, 0);
       return true;
     }
     catch (IllegalStateException e) {
-      Logging.e(TAG, "encode failed", e);
+      Logging.e(TAG, "encodeBuffer failed", e);
       return false;
     }
   }
 
-  private void release() {
+  void release() {
     Logging.d(TAG, "Java releaseEncoder");
     checkOnMediaCodecThread();
     try {
       mediaCodec.stop();
       mediaCodec.release();
     } catch (IllegalStateException e) {
       Logging.e(TAG, "release failed", e);
     }
     mediaCodec = null;
     mediaCodecThread = null;
@@ skipping 10 matching lines @@
       mediaCodec.setParameters(params);
       return true;
     } catch (IllegalStateException e) {
       Logging.e(TAG, "setRates failed", e);
       return false;
     }
   }
 
   // Dequeue an input buffer and return its index, -1 if no input buffer is
   // available, or -2 if the codec is no longer operative.
-  private int dequeueInputBuffer() {
+  int dequeueInputBuffer() {
     checkOnMediaCodecThread();
     try {
       return mediaCodec.dequeueInputBuffer(DEQUEUE_TIMEOUT);
     } catch (IllegalStateException e) {
       Logging.e(TAG, "dequeueIntputBuffer failed", e);
       return -2;
     }
   }
 
   // Helper struct for dequeueOutputBuffer() below.
-  private static class OutputBufferInfo {
+  static class OutputBufferInfo {
     public OutputBufferInfo(
         int index, ByteBuffer buffer,
         boolean isKeyFrame, long presentationTimestampUs) {
       this.index = index;
       this.buffer = buffer;
       this.isKeyFrame = isKeyFrame;
       this.presentationTimestampUs = presentationTimestampUs;
     }
 
-    private final int index;
-    private final ByteBuffer buffer;
-    private final boolean isKeyFrame;
-    private final long presentationTimestampUs;
+    public final int index;
+    public final ByteBuffer buffer;
+    public final boolean isKeyFrame;
+    public final long presentationTimestampUs;
   }
 
   // Dequeue and return an output buffer, or null if no output is ready.  Return
   // a fake OutputBufferInfo with index -1 if the codec is no longer operable.
-  private OutputBufferInfo dequeueOutputBuffer() {
+  OutputBufferInfo dequeueOutputBuffer() {
     checkOnMediaCodecThread();
     try {
       MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
       int result = mediaCodec.dequeueOutputBuffer(info, DEQUEUE_TIMEOUT);
       // Check if this is config frame and save configuration data.
       if (result >= 0) {
         boolean isConfigFrame =
             (info.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0;
         if (isConfigFrame) {
           Logging.d(TAG, "Config frame generated. Offset: " + info.offset +
@@ skipping 48 matching lines @@
       }
       throw new RuntimeException("dequeueOutputBuffer: " + result);
     } catch (IllegalStateException e) {
       Logging.e(TAG, "dequeueOutputBuffer failed", e);
       return new OutputBufferInfo(-1, null, false, -1);
     }
   }
 
   // Release a dequeued output buffer back to the codec for re-use.  Return
   // false if the codec is no longer operable.
-  private boolean releaseOutputBuffer(int index) {
+  boolean releaseOutputBuffer(int index) {
     checkOnMediaCodecThread();
     try {
       mediaCodec.releaseOutputBuffer(index, false);
       return true;
     } catch (IllegalStateException e) {
       Logging.e(TAG, "releaseOutputBuffer failed", e);
       return false;
     }
   }
 }