On Tue, Aug 12, 2014 at 11:32:20AM +0000, Paul B Mahol wrote:
> Signed-off-by: Paul B Mahol <one...@gmail.com>
> ---
> libavfilter/vf_perspective.c | 69
> +++++++++++++++++++++++++++++++++-----------
> 1 file changed, 52 insertions(+), 17 deletions(-)
>
> diff --git a/libavfilter/vf_perspective.c b/libavfilter/vf_perspective.c
> index f433226..c5471b0 100644
> --- a/libavfilter/vf_perspective.c
> +++ b/libavfilter/vf_perspective.c
> @@ -47,10 +47,8 @@ typedef struct PerspectiveContext {
> int hsub, vsub;
> int nb_planes;
>
> - void (*perspective)(struct PerspectiveContext *s,
> - uint8_t *dst, int dst_linesize,
> - uint8_t *src, int src_linesize,
> - int w, int h, int hsub, int vsub);
> + int (*perspective)(AVFilterContext *ctx,
> + void *arg, int job, int nb_jobs);
> } PerspectiveContext;
>
> #define OFFSET(x) offsetof(PerspectiveContext, x)
> @@ -193,15 +191,34 @@ static int config_input(AVFilterLink *inlink)
> return 0;
> }
>
> -static void resample_cubic(PerspectiveContext *s,
> - uint8_t *dst, int dst_linesize,
> - uint8_t *src, int src_linesize,
> - int w, int h, int hsub, int vsub)
> +typedef struct ThreadData {
> + uint8_t *dst;
> + int dst_linesize;
> + uint8_t *src;
> + int src_linesize;
> + int w, h;
> + int hsub, vsub;
> +} ThreadData;
> +
> +static int resample_cubic(AVFilterContext *ctx, void *arg,
> + int job, int nb_jobs)
> {
> + PerspectiveContext *s = ctx->priv;
> + ThreadData *td = arg;
> + uint8_t *dst = td->dst;
> + int dst_linesize = td->dst_linesize;
> + uint8_t *src = td->src;
> + int src_linesize = td->src_linesize;
> + int w = td->w;
> + int h = td->h;
> + int hsub = td->hsub;
> + int vsub = td->vsub;
> + int start = (h * job) / nb_jobs;
> + int end = (h * (job+1)) / nb_jobs;I would guess this doesn't work unless you src += start * src_linesize (same for dst) [...] -- Clément B.
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