HarmonyOS 视频解码输出异常？

Question

先调用视频解码器Flush。

int32_t ret = OH_VideoDecoder_Flush(video_codec_); 
ret = OH_VideoDecoder_Start(video_codec_); 

然后调用start，之后收到解码器

void OhosVideoDecoder::OnNeedInputBuffer(OH_AVCodec *codec, uint32_t index, OH_AVBuffer *buffer, void *userData) {   XLOG_INFO("index: %d, buffer: %p", index, buffer); 

的回调，打印的log：

[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 2, buffer: 0x5c8eeffbf0
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 1, buffer: 0x5c84ef18d0
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 2, buffer: 0x5c84ef1840
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 3, buffer: 0x5c84ef1990
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 4, buffer: 0x5c95b62350

看index是2的回调了两次，并且两次的buffer地址也不一样。开始从上面返回的index和buffer中塞视频帧

XLOG_INFO("info.pts: %lld, info.size: %d, info.flags: %d, index: %d", info.pts, info.size, info.flags, index);
OH_AVBuffer_SetBufferAttr(buffer, &info);
int32_t ret = OH_VideoDecoder_PushInputBuffer(video_codec_, index);

log输出：

[ohos_video_decoder.cpp][234][TryDecode]: info.pts: 0, info.size: 147054, info.flags: 0, index: 1
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 1, buffer: 0x5c84ef18d0
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][234][TryDecode]: info.pts: 33000, info.size: 95116, info.flags: 0, index: 2
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 2, buffer: 0x5c84ef1840
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][234][TryDecode]: info.pts: 67000, info.size: 83603, info.flags: 0, index: 3
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 3, buffer: 0x5c84ef1990

继续

[ohos_video_decoder.cpp][234][TryDecode]: info.pts: 1567000, info.size: 65027, info.flags: 0, index: 4
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 4, buffer: 0x5c95b62350
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][190][TryDecode]:
[ohos_video_decoder.cpp][234][TryDecode]: info.pts: 1600000, info.size: 162304, info.flags: 10, index: 2
[ohos_video_decoder.cpp][22][OnNeedInputBuffer]: index: 2, buffer: 0x5c84ef1840
[ohos_video_decoder.cpp][190][TryDecode]:

直到现在才有output的回调。

[ohos_video_decoder.cpp][37][OnNewOutputBuffer]:
[ohos_video_decoder.cpp][52][OnFrameAvailable]:
[ohos_video_decoder.cpp][59][operator()]:
[ohos_video_decoder.cpp][71][operator()]: xxx pts_ms: 1600000

这个时间是从surfacetexture中取到的。

int64_t pts_ms = OH_NativeImage_GetTimestamp(decoder->native_image_); // 输出单位是微妙 
XLOG_INFO("xxx pts_ms: %lld", pts_ms);

Answer 1

运行了应用（抓取no filter日志）。得到以下错误信息：

09-02 17:19:51.514 1466-28845 C02B32/av_codec_service/HCODEC av_codec_service I [76][dec.avc][Running][OnQueueInputBuffer 896] this is not a eos buffer but not filled, ask user to re-fill it
09-02 17:19:51.515 1466-28845 C02B32/av_codec_service/HCODEC av_codec_service I [76][dec.avc][Running][OnQueueInputBuffer 896] this is not a eos buffer but not filled, ask user to re-fill it
09-02 17:19:51.515 1466-28845 C02B32/av_codec_service/HCODEC av_codec_service I [76][dec.avc][Running][OnQueueInputBuffer 896] this is not a eos buffer but not filled, ask user to re-fill it
09-02 17:19:51.515 1466-28845 C02B32/av_codec_service/HCODEC av_codec_service I [76][dec.avc][Running][OnQueueInputBuffer 896] this is not a eos buffer but not filled, ask user to re-fill it

以上日志说明pushinputbuffer时，size没设或设成0。

09-02 17:19:54.896 1466-28845 C02B32/av_codec_service/HCODEC av_codec_service E [76][dec.avc][Running][OnQueueInputBuffer 865] wrong ownership: buffer id=3, owner=omx
09-02 17:19:54.897 25495-28836 C02B30/ E {OH_VideoDecoder_PushInputBuffer():578} videoDecoder QueueInputBuffer failed!
09-02 17:19:54.897 25495-28836 A0FF00/ E [ohos_video_decoder.cpp][236][TryDecode]: OH_VideoDecoder_PushInputBuffer failed, ret: 3

以上日志说明push时，没用回调给的index，而是用的正在解码的buffer的index，所以提示buffer的所有者是omx。请参考上面的错误说明，修改代码。