translate the note of HardwareDecode into English

translate the note of HardwareDecode into English
pull/112/head
xufulong 5 years ago
parent d236171c01
commit 918fe2bc12
  1. 17
      app/src/main/java/com/frank/ffmpeg/hardware/HardwareDecode.java
  2. 2
      app/src/main/java/com/frank/ffmpeg/listener/OnHandleListener.java
  3. 2
      app/src/main/java/com/frank/ffmpeg/listener/OnItemClickListener.java

@ -10,7 +10,7 @@ import android.view.Surface;
import java.nio.ByteBuffer;
/**
* 使用MediaExtractor抽帧MediaCodec解码然后渲染到Surface
* Extract by MediaExtractor, decode by MediaCodec, and render to Surface
* Created by frank on 2019/11/16.
*/
@ -105,7 +105,8 @@ public class HardwareDecode {
}
/**
* 根据原分辨率大小动态设置预览分辨率
* setting the preview resolution according to video aspect ratio
*
* @param mediaFormat mediaFormat
*/
private void setPreviewRatio(MediaFormat mediaFormat) {
@ -160,11 +161,11 @@ public class HardwareDecode {
}
Log.i(TAG, "width=" + width + "--height=" + height + "--duration==" + duration);
//重新设置预览分辨率
//setting preview resolution
setPreviewRatio(mediaFormat);
Log.i(TAG, "mediaFormat=" + mediaFormat.toString());
//配置MediaCodec,并且start
//config MediaCodec, and start
mediaCodec = MediaCodec.createDecoderByType(mimeType);
mediaCodec.configure(mediaFormat, mSurface, null, 0);
mediaCodec.start();
@ -176,12 +177,12 @@ public class HardwareDecode {
SystemClock.sleep(SLEEP_TIME);
continue;
}
//从缓冲区取出一个缓冲块,如果当前无可用缓冲块,返回inputIndex<0
//dequeue from input buffer
int inputIndex = mediaCodec.dequeueInputBuffer(DEQUEUE_TIME);
if (inputIndex >= 0) {
ByteBuffer inputBuffer = inputBuffers[inputIndex];
int sampleSize = mediaExtractor.readSampleData(inputBuffer, 0);
//入队列
//enqueue to input buffer
if (sampleSize < 0) {
mediaCodec.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
} else {
@ -190,7 +191,7 @@ public class HardwareDecode {
}
}
//出队列
//dequeue from output buffer
int outputIndex = mediaCodec.dequeueOutputBuffer(bufferInfo, DEQUEUE_TIME);
switch (outputIndex) {
case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
@ -203,7 +204,7 @@ public class HardwareDecode {
Log.i(TAG, "output buffer changed...");
break;
default:
//渲染到surface
//render to surface
mediaCodec.releaseOutputBuffer(outputIndex, true);
break;
}

@ -1,7 +1,7 @@
package com.frank.ffmpeg.listener;
/**
* 流程执行监听器
* listener of FFmpeg processing
* Created by frank on 2019/11/11.
*/
public interface OnHandleListener {

@ -1,7 +1,7 @@
package com.frank.ffmpeg.listener;
/**
* RecyclerView item点击监听器
* listener of RecyclerView item clicking
* Created by frank on 2018/6/6.
*/

Loading…
Cancel
Save