Hello,
I'm trying to decode a video stream with hevc_qsv.( h265->NV12 )
I succeeded to get a frame, however the frame has a block noise.
Now i dont understand why the noise occur.
decoding code is :
void qsv_decode(AVCodecContext *avctx, unsigned char *hevc_data /* size is more
32 byte than len */, int length)
{
AVFrame *frame = NULL, *sw_frame = NULL;
int ret = 0;
int finish = 0;
AVPacket packet;
av_init_packet(&packet);
ret = av_packet_from_data(&packet, hevc_data, length);
if (ret < 0)
return ;
while (ret >= 0 && finish == 0) {
ret = avcodec_send_packet(avctx, packet);
if (ret < 0)
break;
if (!(frame = av_frame_alloc()) || !(sw_frame =
av_frame_alloc()))
break;
ret = avcodec_receive_frame(avctx, frame);
if (ret == AVERROR(EAGAIN) {
av_frame_free(&frame);
av_frame_free(&sw_frame);
continue;
}
else if (ret < 0) {
break;
}
ret = av_hwframe_transfer_data(sw_frame, frame, 0);
if (ret < 0)
break;
finish = 1;
}
if (finish == 1)
{
// set frame to image buffer
}
return ;
}
What am I missing out here, setting param to packet and so on ? (less buffer,
fast timing...)
If you need any other information, please let me know.
Thanks in advance.
tanaka_______________________________________________
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