[FFmpeg-devel] [PATCH 2/2] avcodec/videotoolbox: add hevc support

[Hendrik Leppkes]

On Wed, Sep 27, 2017 at 6:37 PM, wm4 <nfxjfg at googlemail.com> wrote:
> On Wed, 27 Sep 2017 09:17:36 -0700
> Aman Gupta <ffmpeg at tmm1.net> wrote:
>
>> On Wed, Sep 27, 2017 at 5:51 AM, wm4 <nfxjfg at googlemail.com> wrote:
>>
>> > On Tue, 26 Sep 2017 18:08:10 -0700
>> > Aman Gupta <ffmpeg at tmm1.net> wrote:
>> >
>> > > From: Aman Gupta <aman at tmm1.net>
>> > >
>> > > ---
>> > >  configure                    |   2 +
>> > >  libavcodec/allcodecs.c       |   1 +
>> > >  libavcodec/hevc_refs.c       |   3 +
>> > >  libavcodec/hevcdec.c         |  12 ++-
>> > >  libavcodec/vda_vt_internal.h |   1 +
>> > >  libavcodec/videotoolbox.c    | 203 ++++++++++++++++++++++++++++++
>> > +++++++++++++
>> > >  6 files changed, 221 insertions(+), 1 deletion(-)
>> >
>> > PS: A final patch should make sure these symbols don't cause build
>> > failures with older SDKs:
>> >
>> > > +        case kCMVideoCodecType_HEVC :
>> >
>> > > +        videotoolbox->cm_codec_type = kCMVideoCodecType_HEVC;
>> >
>> >
>> > Maybe with a configure check.
>> >
>>
>> This is available since macOS 10.11. How far back does ffmpeg support?
>
> Really not sure. If VideoToolbox support is never detected before
> 10.11, then it's OK.

VT is supported since 10.8, if anything newer is required for this,
then it should get a configure check.

- Hendrik