Le sextidi 16 germinal, an CCXXV, Matthias C. M. Troffaes a écrit :
> +#define DEFINE_BLEND(NAME, TYPE, DECL, EXPR)
> \
> +static void blend_##NAME##_##TYPE(AVFilterContext *ctx, AVFrame *in, int
> plane)\
> +{
> \
> + FrameStepContext *s = ctx->priv;
> \
> + DECL
> \
> + const int height = s->planeheight[plane];
> \
> + const int width = s->planewidth[plane];
> \
> + const int stride = in->linesize[plane] / sizeof(TYPE);
> \
> + TYPE *src = (TYPE *)in->data[plane];
> \
> + uint32_t *dst = s->data[plane];
> \
> + int y, x;
> \
> +
> \
> + for (y = 0; y < height; y++) {
> \
> + for (x = 0; x < width; x++) {
> \
> + EXPR;
> \
> + }
> \
> + src += stride;
> \
> + }
> \
> +}
> +
> +#define SET_DECL
> +#define SET_EXPR *dst++ = src[x]
> +#define ADD_DECL
> +#define ADD_EXPR *dst++ += src[x]
> +#define DIV_DECL const int frame_blend = s->frame_blend;
> +#define DIV_EXPR src[x] = *dst++ / frame_blend
> +
> +DEFINE_BLEND(set, uint8_t, SET_DECL, SET_EXPR)
> +DEFINE_BLEND(set, uint16_t, SET_DECL, SET_EXPR)
> +DEFINE_BLEND(add, uint8_t, ADD_DECL, ADD_EXPR)
> +DEFINE_BLEND(add, uint16_t, ADD_DECL, ADD_EXPR)
> +DEFINE_BLEND(div, uint8_t, DIV_DECL, DIV_EXPR)
> +DEFINE_BLEND(div, uint16_t, DIV_DECL, DIV_EXPR)There is already blending code in vf_framerate and vf_overlay, I think we should not add new similar code without sharing it as much as possible. Regards, -- Nicolas George
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
