Am Di., 30. Juli 2019 um 15:20 Uhr schrieb James Almer <jamr...@gmail.com>:
>
> On 7/30/2019 2:59 AM, Limin Wang wrote:
> >> + if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
> >> + EB_BUFFERHEADERTYPE *header_ptr = NULL;
> >> +
> >> + svt_ret = EbH265EncStreamHeader(svt_enc->svt_handle, &header_ptr);
> >> + if (svt_ret != EB_ErrorNone) {
> >> + av_log(avctx, AV_LOG_ERROR, "Failed to build stream
> >> header\n");
> >> + goto failed_init_encoder;
> >> + }
> >> +
> >> + avctx->extradata_size = header_ptr->nFilledLen;
> >> + avctx->extradata = av_malloc(avctx->extradata_size +
> >> AV_INPUT_BUFFER_PADDING_SIZE);
> > It's preferalbe to use av_mallocz
>
> He was asked to do it this way as it's faster. No need to zero the whole
> buffer if it's going to be written to immediately afterwards. Only the
> trailing padding bytes needs to be zeroed.
In this case I suspect there is an unneeded cast in the next line.
Carl Eugen
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