[FFmpeg-devel] [PATCH] avcodec/clearvideo: add inter-frame decoding

[Paul B Mahol]

On 4/3/18, Michael Niedermayer <michael at niedermayer.cc> wrote:
> On Mon, Apr 02, 2018 at 08:18:02PM +0200, Paul B Mahol wrote:
>> Signed-off-by: Paul B Mahol <onemda at gmail.com>
>> ---
>>  libavcodec/clearvideo.c | 2394
>> ++++++++++++++++++++++++++++++++++++++++++++++-
>>  1 file changed, 2378 insertions(+), 16 deletions(-)
>>
> [...]
>
>> @@ -271,6 +2022,332 @@ static int decode_mb(CLVContext *c, int x, int y)
>>      return 0;
>>  }
>>
>> +static MV pred(MV a, MV b, MV c)
>> +{
>> +    MV mv;
>> +
>> +    if (a.x < b.x) {
>> +        if (b.x < c.x) {
>> +            mv.x = b.x;
>> +        } else {
>> +            if (a.x < c.x) {
>> +                mv.x = c.x;
>> +            } else {
>> +                mv.x = a.x;
>> +            }
>> +        }
>> +    } else {
>> +        if (b.x < c.x) {
>> +            if (a.x < c.x) {
>> +                mv.x = a.x;
>> +            } else {
>> +                mv.x = c.x;
>> +            }
>> +        } else {
>> +            mv.x = b.x;
>> +        }
>> +    }
>> +
>> +    if (a.y < b.y) {
>> +        if (b.y < c.y) {
>> +            mv.y = b.y;
>> +        } else {
>> +            if (a.y < c.y) {
>> +                mv.y = c.y;
>> +            } else {
>> +                mv.y = a.y;
>> +            }
>> +        }
>> +    } else {
>> +        if (b.y < c.y) {
>> +            if (a.y < c.y) {
>> +                mv.y = a.y;
>> +            } else {
>> +                mv.y = c.y;
>> +            }
>> +        } else {
>> +            mv.y = b.y;
>> +        }
>> +    }
>
> is this mid_pred() ?

Yes. Fixed locally.

>
>
> [...]
>> @@ -290,7 +2367,13 @@ static int clv_decode_frame(AVCodecContext *avctx,
>> void *data,
>>
>>      frame_type = bytestream2_get_byte(&gb);
>>
>> -    if (frame_type & 0x2) {
>
>> +    if (frame_type & 0x7f == 0x30) {
>
> missing ()

Added locally.

>
>
> [...]
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> Old school: Use the lowest level language in which you can solve the
> problem
>             conveniently.
> New school: Use the highest level language in which the latest
> supercomputer
>             can solve the problem without the user falling asleep waiting.
>