Lines Matching defs:alpha
242 int16_t *alpha;
370 s->alpha = av_calloc(avctx->width * avctx->height, sizeof(*s->alpha));
371 if (!s->alpha)
405 int alpha = src[j];
407 if (alpha > 0 && alpha < 4080) {
408 alpha *= 223;
409 alpha += 128;
410 alpha >>= 8;
411 alpha += 256;
414 dst[j] = av_clip_uintp2(alpha, 12);
448 in_stride, s->alpha);
449 input = s->alpha;
816 av_freep(&s->alpha);