[FFmpeg-devel] [PATCH 2/3] avcodec/vvc/cabac: remove vvc_refill2
Nuo Mi
nuomi2021 at gmail.com
Fri Aug 2 15:20:02 EEST 2024
On Wed, Jul 24, 2024 at 2:56 AM <toqsxw at outlook.com> wrote:
> From: Wu Jianhua <toqsxw at outlook.com>
>
> See https://github.com/ffvvc/FFmpeg/issues/178
>
> Signed-off-by: Wu Jianhua <toqsxw at outlook.com>
>
Hi Jianhua,
https://patchwork.ffmpeg.org/check/105889/
build failed.
Could you help check?
thank you
> ---
> libavcodec/vvc/cabac.c | 28 +---------------------------
> 1 file changed, 1 insertion(+), 27 deletions(-)
>
> diff --git a/libavcodec/vvc/cabac.c b/libavcodec/vvc/cabac.c
> index 0d45eec751..c9b6f9bf3e 100644
> --- a/libavcodec/vvc/cabac.c
> +++ b/libavcodec/vvc/cabac.c
> @@ -856,32 +856,6 @@ int ff_vvc_cabac_init(VVCLocalContext *lc,
> return ret;
> }
>
> -//fixme
> -static void vvc_refill2(CABACContext* c) {
> - int i;
> - unsigned x;
> -#if !HAVE_FAST_CLZ
> - x = c->low ^ (c->low - 1);
> - i = 7 - ff_h264_norm_shift[x >> (CABAC_BITS - 1)];
> -#else
> - i = ff_ctz(c->low) - CABAC_BITS;
> -#endif
> -
> - x = -CABAC_MASK;
> -
> -#if CABAC_BITS == 16
> - x += (c->bytestream[0] << 9) + (c->bytestream[1] << 1);
> -#else
> - x += c->bytestream[0] << 1;
> -#endif
> -
> - c->low += x << i;
> -#if !UNCHECKED_BITSTREAM_READER
> - if (c->bytestream < c->bytestream_end)
> -#endif
> - c->bytestream += CABAC_BITS / 8;
> -}
> -
> static int inline vvc_get_cabac(CABACContext *c, VVCCabacState* base,
> const int ctx)
> {
> VVCCabacState *s = base + ctx;
> @@ -904,7 +878,7 @@ static int inline vvc_get_cabac(CABACContext *c,
> VVCCabacState* base, const int
> c->low <<= lps_mask;
>
> if (!(c->low & CABAC_MASK))
> - vvc_refill2(c);
> + refill2(c);
> s->state[0] = s->state[0] - (s->state[0] >> s->shift[0]) + (1023 *
> bit >> s->shift[0]);
> s->state[1] = s->state[1] - (s->state[1] >> s->shift[1]) + (16383 *
> bit >> s->shift[1]);
> return bit;
> --
> 2.44.0.windows.1
>
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