HarmonyOS 鸿蒙Next Native侧如何将ArkTS侧Uint8Array的H264实时流传给VideoDecoder解码

首先感谢网友的分享和帮助！！！
问题已解决，参见issues：https://gitee.com/kairen-13/AVCodecSample/issues
直接读裸码流官方demo： https://gitee.com/openharmony/multimedia_av_codec/tree/master/test/unittest/video_test/video_test/sample/decoder
实现思路：
0. 通过demo1导入工程直接可运行（https://gitee.com/harmonyos_samples/AVCodecVideo）

1. ArkTS层传Uint8Array到Native，参考（2. Native侧如何获取ArkTS侧的Uint8Array实例）

2. 屏蔽demo读文件的代码，修改为读码流，大概修改如下：
 

/ Player.cpp
void Player::DecInputThread() {
    //...省略
        CodecBufferInfo bufferInfo = signal->inputBufferInfoQueue_.front();
        signal->inputBufferInfoQueue_.pop();
        signal->inputFrameCount_++;
        lock.unlock();
        // 按理解，应该改这里，将Uint8Array数据写入bufferInfo
        // - demuxer_->ReadSample(reinterpret_cast<OH_AVBuffer *>(bufferInfo.buffer), bufferInfo.attr);
        // =========Native不大懂，尝试修改======
        uint8_t * buf = ...; // ArkTS传的Uint8Array H264码流数据
        int bufSize = ...; // 码流长度
        OH_AVBuffer *buffer = reinterpret_cast<OH_AVBuffer *>(bufferInfo.buffer);
        std::memcpy(OH_AVBuffer_GetAddr(buffer), reinterpret_cast<char *>(buf), bufSize);
    <span class="hljs-comment"><span class="hljs-comment">// 赋值attr</span></span>
    <span class="hljs-comment"><span class="hljs-comment">// 解析buf是否包含”00 00 00 01 65“为I帧 flags=AVCODEC_BUFFER_FLAGS_SYNC_FRAME</span></span>
    <span class="hljs-comment"><span class="hljs-comment">// 解析buf是否包含”00 00 00 01 67/68“为SPS/PPS flags=AVCODEC_BUFFER_FLAGS_CODEC_DATA</span></span>
    <span class="hljs-comment"><span class="hljs-comment">// 其他为=AVCODEC_BUFFER_FLAGS_NONE</span></span>
    uint32_t flags = ...;
    bufferInfo.attr.size = bufSize;
    bufferInfo.attr.offset = <span class="hljs-number"><span class="hljs-number">0</span></span>;
    int64_t microseconds = <span class="hljs-number"><span class="hljs-number">1000000</span></span> / <span class="hljs-number"><span class="hljs-number">30</span></span> * (videoDecContext_-&gt;inputFrameCount - <span class="hljs-number"><span class="hljs-number">1</span></span>);
    bufferInfo.attr.pts = microseconds; <span class="hljs-comment"><span class="hljs-comment">// 此缓冲区的显示时间戳（以微秒为单位）</span></span>
    bufferInfo.attr.flags = flags;
    <span class="hljs-comment"><span class="hljs-comment">// =============</span></span>
    <span class="hljs-comment"><span class="hljs-comment">//--！！！非常重要--改码流后，需要再调下OH_AVBuffer_SetBufferAttr--</span></span>
    <span class="hljs-comment"><span class="hljs-comment">//---之前漏了这句，写入成功，导致无法解码出来</span></span>
    int32_t ret1 = OH_AVBuffer_SetBufferAttr(<span class="hljs-keyword"><span class="hljs-keyword">reinterpret_cast</span></span>&lt;OH_AVBuffer *&gt;(info.buffer), &amp;info.attr);
    CHECK_AND_RETURN_RET_LOG(ret1 == AV_ERR_OK, AVCODEC_SAMPLE_ERR_ERROR, <span class="hljs-string"><span class="hljs-string">"Set avbuffer attr failed"</span></span>);
//-------------------
int32_t ret = videoDecoder_->PushInputData(bufferInfo);
if (ret != AV_ERR_OK) {
OH_LOG_ERROR(LOG_APP, “Push data failed, thread out”);
break;
}
//…省略
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>