[x265] [PATCH] Save intra mode in lowres

[Steve Borho]

On 10/30, Nicolas Morey-Chaisemartin wrote:
> # HG changeset patch
> # User Nicolas Morey-Chaisemartin <nmorey at kalray.eu>
> # Date 1414664871 -3600
> #      Thu Oct 30 11:27:51 2014 +0100
> 
> Save intra mode in lowres

I assume this is a precursor to a --superfast-intra param.  It seems
innocuous enough but I leaning towards uint8_t storage to minimize the
memory impact.

> ---
>  source/common/lowres.cpp     | 2 ++
>  source/common/lowres.h       | 1 +
>  source/encoder/slicetype.cpp | 1 +
>  3 files changed, 4 insertions(+)
> 
> diff --git a/source/common/lowres.cpp b/source/common/lowres.cpp
> index fe4f7b9..125760e 100644
> --- a/source/common/lowres.cpp
> +++ b/source/common/lowres.cpp
> @@ -69,6 +69,7 @@ bool Lowres::create(PicYuv *origPic, int _bframes, bool bAQEnabled)
>      lowresPlane[3] = buffer[3] + padoffset;
>      CHECKED_MALLOC(intraCost, int32_t, cuCount);
> +    CHECKED_MALLOC(intraMode, int32_t, cuCount);
>      for (int i = 0; i < bframes + 2; i++)
>      {
> @@ -99,6 +100,7 @@ void Lowres::destroy()
>          X265_FREE(buffer[i]);
>      X265_FREE(intraCost);
> +    X265_FREE(intraMode);
>      for (int i = 0; i < bframes + 2; i++)
>      {
> diff --git a/source/common/lowres.h b/source/common/lowres.h
> index b88ad3e0..605fda9 100644
> --- a/source/common/lowres.h
> +++ b/source/common/lowres.h
> @@ -116,6 +116,7 @@ struct Lowres : public ReferencePlanes
>      int32_t*  rowSatds[X265_BFRAME_MAX + 2][X265_BFRAME_MAX + 2];
>      int       intraMbs[X265_BFRAME_MAX + 2];
>      int32_t*  intraCost;
> +    int32_t*  intraMode;
>      int64_t   satdCost;
>      uint16_t* lowresCostForRc;
>      uint16_t(*lowresCosts[X265_BFRAME_MAX + 2][X265_BFRAME_MAX + 2]);
> diff --git a/source/encoder/slicetype.cpp b/source/encoder/slicetype.cpp
> index cc70c20..3f7a61f 100644
> --- a/source/encoder/slicetype.cpp
> +++ b/source/encoder/slicetype.cpp
> @@ -1701,6 +1701,7 @@ void EstimateRow::estimateCUCost(Lowres **frames, ReferencePlanes *wfref0, int c
>          const int intraPenalty = 5 * m_lookAheadLambda;
>          icost += intraPenalty + lowresPenalty; /* estimate intra signal cost */
>          fenc->intraCost[cuXY] = icost;
> +        fenc->intraMode[cuXY] = lowmode;
>          int icostAq = icost;
>          if (bFrameScoreCU)
>          {
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-- 
Steve Borho