Lines Matching refs:alpha
41 uint8_t alpha[256];
48 static void yuv_a_to_rgba(const uint8_t *ycbcr, const uint8_t *alpha, uint32_t *rgba, int num_values)
61 *rgba++ = ((unsigned)*alpha++ << 24) | (r << 16) | (g << 8) | b;
158 uint8_t *colormap = ctx->colormap, *alpha = ctx->alpha;
163 | ((alpha[i] * 17U) << 24);
172 if (alpha[i] != 0 && !color_used[colormap[i]]) {
184 if (alpha[i] != 0) {
190 rgba_palette[i] = b | (g << 8) | (r << 16) | ((alpha[i] * 17U) << 24);
195 ((alpha[i] * 17U) << 24);
224 uint8_t *colormap = ctx->colormap, *alpha = ctx->alpha;
291 /* set alpha */
294 alpha[3] = buf[pos] >> 4;
295 alpha[2] = buf[pos] & 0x0f;
296 alpha[1] = buf[pos + 1] >> 4;
297 alpha[0] = buf[pos + 1] & 0x0f;
299 ff_dlog(NULL, "alpha=%x%x%x%x\n", alpha[0],alpha[1],alpha[2],alpha[3]);
339 /* HD set contrast (alpha) */
343 alpha[i] = 0xFF - buf[pos+i];
395 yuv_a_to_rgba(yuv_palette, alpha,