RK3288 MediaCodec ndk 下解码错误求助

qbasicbirthday · July 16, 2020, 4:11am

解码H264 代码如下
AMediaCodec_queueInputBuffer 先是正确返回>=0 一两分钟后
后面就是返回-1,一直解码不成功

#include “DecodeOp.h”
#include <media/NdkMediaCodec.h>
//#include “CommonOp.h”
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <android/log.h>
#include <pthread.h>
#define LOG_TAG “C_MDA”
#define LOGD(…) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, VA_ARGS)

#define MIN(_a,_b) ((_a) > (_b) ? (_b) : (_a))

int DecodeOp::init(int width, int height)
{
const char *mine = “video/avc”;
mMediaCodec = AMediaCodec_createDecoderByType(mine);
//注意这里，如果系统不存在对应的mine，mMediaCodec也会返回对象，
//不过之后涉及到mMediaCodec的任何函数都会直接导致程序崩掉。
if (NULL == mMediaCodec)
{
return 0;
}

AMediaFormat *videoFormat = AMediaFormat_new();
AMediaFormat_setString(videoFormat, "mime", "video/avc");
AMediaFormat_setInt32(videoFormat, AMEDIAFORMAT_KEY_WIDTH, width);
AMediaFormat_setInt32(videoFormat, AMEDIAFORMAT_KEY_HEIGHT, height);
media_status_t status = AMediaCodec_configure(mMediaCodec, videoFormat, NULL, NULL, 0);
if (status != AMEDIA_OK)
{
    AMediaCodec_delete(mMediaCodec);
    mMediaCodec = NULL;
    return 0;
}

mWidth = width;
mHeight = height;

mFramecnt=0;
status = AMediaCodec_start(mMediaCodec);
if (status != AMEDIA_OK)
{
    AMediaCodec_delete(mMediaCodec);
    mMediaCodec = NULL;
    return 0;
}

return 1;

}

int DecodeOp::fini()
{
AMediaCodec_stop(mMediaCodec);
AMediaCodec_delete(mMediaCodec);
mMediaCodec = NULL;
return 1;
}

int DecodeOp::decode(char *bufData, int bufSize, char *outBuf,pthread_mutex_t mutex) {
if (NULL == mMediaCodec)
return 0;
ssize_t bufidx = AMediaCodec_dequeueInputBuffer(mMediaCodec, 10000); //-1);
if (bufidx >= 0) {
// 获取buffer的索引
size_t outsize;
uint8_t inputBuf = AMediaCodec_getInputBuffer(mMediaCodec, bufidx, &outsize);
if (inputBuf != nullptr && bufSize <= outsize) {
// 将待解码的数据copy到硬件中
memcpy(inputBuf, bufData, bufSize);
media_status_t status = AMediaCodec_queueInputBuffer(mMediaCodec, bufidx, 0, bufSize,5mFramecnt++ / pts */, 0);
}
//LOGD(“ie:%lld”,mFramecnt);
}else
{
LOGD(“ib:%d”,bufidx);
AMediaCodec_flush(mMediaCodec);
AMediaCodec_start(mMediaCodec);
}

int ret=0;
AMediaCodecBufferInfo info;
ssize_t outbufidx = AMediaCodec_dequeueOutputBuffer(mMediaCodec, &info, 0);
//LOGD("ob:%d",outbufidx);
if (outbufidx >= 0) {
    size_t outsize;
    uint8_t *outputBuf = AMediaCodec_getOutputBuffer(mMediaCodec, outbufidx, &outsize);
    LOGD("obs:%d",outsize);
    if (outputBuf != nullptr) {
        ret= 1;
    }
    AMediaCodec_releaseOutputBuffer(mMediaCodec, outbufidx, false);
} else {
    switch (outbufidx) {
        case AMEDIACODEC_INFO_OUTPUT_FORMAT_CHANGED:
            // 解码输出的格式发生变化
        {
            auto format = AMediaCodec_getOutputFormat(mMediaCodec);
            AMediaFormat_getInt32(format, "width", &mWidth);
            AMediaFormat_getInt32(format, "height", &mHeight);
            int32_t localColorFMT;
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_COLOR_FORMAT, &localColorFMT);
        }
        case AMEDIACODEC_INFO_OUTPUT_BUFFERS_CHANGED:
            break;
        default:
            break;
    }
}
return ret;

}

qbasicbirthday · July 16, 2020, 4:17am

如果 java 模式下调用 mediacodec 就能一直解码成功
java 调用 mediacodec 解码的代码如下
/**

Created by ZhangHao on 2016/8/5.
用于硬件解码(MediaCodec)H264的工具类
*/
public class MediaCodecUtil {
//自定义的log打印，可以无视
//Logger logger = Logger.getLogger();

private String TAG = “MediaCodecUtil”;
//解码后显示的surface及其宽高
private SurfaceHolder holder;
private int width, height;
//解码器
private MediaCodec mCodec;
private MediaFormat mFormat;
private boolean isFirst = true;
// 需要解码的类型
private final static String MIME_TYPE = “video/avc”; // H.264 Advanced Video
private final static int TIME_INTERNAL = 5;

/**
- 初始化解码器
- @param holder 用于显示视频的surface
- @param width surface宽
- @param height surface高
  */
  public MediaCodecUtil(SurfaceHolder holder, int width, int height) {
  // logger.d("MediaCodecUtil() called with: " + “holder = [” + holder + "], " +
  // “width = [” + width + “], height = [” + height + “]”);
  this.holder = holder;
  this.width = width;
  this.height = height;
  //mFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Flexible);
  }
public MediaCodecUtil(SurfaceHolder holder) {
this(holder, holder.getSurfaceFrame().width(), holder.getSurfaceFrame().height());
}

public void startCodec() {
if (isFirst) {
//第一次打开则初始化解码器
initDecoder();
}
}

private void initDecoder() {
try {
//根据需要解码的类型创建解码器
mCodec = MediaCodec.createDecoderByType(MIME_TYPE);
} catch (IOException e) {
e.printStackTrace();
}
//初始化MediaFormat
MediaFormat mediaFormat = MediaFormat.createVideoFormat(MIME_TYPE,
width, height);
//配置MediaFormat以及需要显示的surface
mCodec.configure(mediaFormat, holder.getSurface(), null, 0);
//开始解码
mCodec.start();
isFirst = false;
}

int mCount = 0;
public boolean onFrame(byte buf, int offset, int length) {
// 获取输入buffer index
ByteBuffer inputBuffers = mCodec.getInputBuffers();
//-1表示一直等待；0表示不等待；其他大于0的参数表示等待毫秒数
int inputBufferIndex = mCodec.dequeueInputBuffer(-1);
if (inputBufferIndex >= 0) {
ByteBuffer inputBuffer = inputBuffers[inputBufferIndex];
//清空buffer
inputBuffer.clear();
//put需要解码的数据
inputBuffer.put(buf, offset, length);
//解码
mCodec.queueInputBuffer(inputBufferIndex, 0, length, mCount * TIME_INTERNAL, 0);
mCount++;
} else {
return false;
}
```
//mCodec.flush();

 // 获取输出buffer index
 MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
 int outputBufferIndex;
 do{
     outputBufferIndex = mCodec.dequeueOutputBuffer(bufferInfo, 0);
     if(outputBufferIndex<0) break;
     mCodec.releaseOutputBuffer(outputBufferIndex, true);
 }while(true);

 if (outputBufferIndex < 0) {
     //logger.e("outputBufferIndex = " + outputBufferIndex);
 }

 return true;
```
}

/**
*停止解码，释放解码器
*/
public void stopCodec() {
```
 try {
     mCodec.stop();
     mCodec.release();
     mCodec = null;
     isFirst = true;
 } catch (Exception e) {
     e.printStackTrace();
     mCodec = null;
 }
```
}
}

RK3288 MediaCodec ndk 下解码错误 求助

RK3288 MediaCodec ndk 下解码错误求助