I am trying to use videotoolbox to encode yuv frames for macOS. I am able
to find the appropriate device and successfully create AVHWFramesContext. But
when trying to call av_hwframe_get_buffer, I always get the error (
AVERROR(EINVAL)) because my AVHWFramesContext pool is NULL.
Here is code to create device context:
ret = av_hwdevice_ctx_create(&deviceCtx_, hwType, nullptr, nullptr, 0);
And to create frame context:
framesCtx_ = av_hwframe_ctx_alloc(deviceCtx_);
if (!framesCtx_)
return false;
AVHWFramesContext *ctx = (AVHWFramesContext*)(framesCtx_->data);
ctx->format = format_;
ctx->sw_format = swFormat_;
ctx->width = width;
ctx->height = height;
if ((ret = av_hwframe_ctx_init(framesCtx_)) < 0)
av_buffer_unref(&framesCtx_);
Do I need to set the initial pool size when using videotoolbox? If I do, I
get error when calling av_hwframe_ctx_init. In this case, the internal pool
is NULL.
Do I need to manage the context pool myself or should it be done
automatically?
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