diff options
Diffstat (limited to 'apps/plugins')
| -rw-r--r-- | apps/plugins/pictureflow.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/apps/plugins/pictureflow.c b/apps/plugins/pictureflow.c index b107227..2c59e1a 100644 --- a/apps/plugins/pictureflow.c +++ b/apps/plugins/pictureflow.c @@ -397,6 +397,9 @@ static inline PFreal fcos(int iangle) return fsin(iangle + (IANGLE_MAX >> 2)); } +#define RB_DIV ((31ULL << 32) / 255 + 1) +#define G_DIV ((63ULL << 32) / 255 + 1) + static void output_row_transposed(uint32_t row, void * row_in, struct scaler_context *ctx) { @@ -408,11 +411,11 @@ static void output_row_transposed(uint32_t row, void * row_in, *dest = ((*qp++) + ctx->round) * (uint64_t)ctx->divisor >> 32; #else struct uint32_rgb *qp = (struct uint32_rgb*)row_in; - uint32_t rb_mul = ((uint64_t)ctx->divisor * 31 + 127) / 255, - rb_rnd = ((uint64_t)ctx->round * 31 + 127) / 255, - g_mul = ((uint64_t)ctx->divisor * 63 + 127) / 255, - g_rnd = ((uint64_t)ctx->round * 63 + 127) / 255; - unsigned int r, g, b; + uint32_t rb_mul = ctx->divisor * (uint64_t)RB_DIV >> 32, + rb_rnd = ctx->round * (uint64_t)RB_DIV >> 32, + g_mul = ctx->divisor * (uint64_t)G_DIV >> 32, + g_rnd = ctx->round * (uint64_t)G_DIV >> 32; + int r, g, b; for (; dest < end; dest += ctx->bm->height) { r = (qp->r + rb_rnd) * (uint64_t)rb_mul >> 32; |