36 static uint32_t extract(uint32_t v, int h, int l, int bits);
37 static uint32_t expand(uint32_t v, int sbits, int dbits);
38 static uint32_t downshift_component(uint32_t in, uint32_t v,
119     uint32_t v = 0;  in read_pixel()  local
121         case 1:		v = *data;									break;  in read_pixel()
122         case 2:		v = *(uint16_t*)data;						break;  in read_pixel()
123         case 3:		v = (data[2]<<16)|(data[1]<<8)|data[0];     break;  in read_pixel()
124         case 4:		v = GGL_RGBA_TO_HOST(*(uint32_t*)data);		break;  in read_pixel()
129             pixel->c[i] = extract(v,  f->c[i].h,  f->c[i].l, f->size*8);  in read_pixel()
136     uint16_t v = *(reinterpret_cast<uint16_t*>(s->data) + (x + (s->stride * y)));  in readRGB565()  local
138     pixel->c[1] = v>>11;  in readRGB565()
139     pixel->c[2] = (v>>5)&0x3F;  in readRGB565()
140     pixel->c[3] = v&0x1F;  in readRGB565()
150     uint32_t v = *(reinterpret_cast<uint32_t*>(s->data) + (x + (s->stride * y)));  in readABGR8888()  local
151     v = GGL_RGBA_TO_HOST(v);  in readABGR8888()
152     pixel->c[0] = v>>24;        // A  in readABGR8888()
153     pixel->c[1] = v&0xFF;       // R  in readABGR8888()
154     pixel->c[2] = (v>>8)&0xFF;  // G  in readABGR8888()
155     pixel->c[3] = (v>>16)&0xFF; // B  in readABGR8888()
178     uint32_t v = 0;  in write_pixel()  local
196             v = downshift_component(v, u, pixelSize, 0, h, l, 0, 0, dither);  in write_pixel()
210             v = logic_op(c->state.logic_op.opcode, v, d);              in write_pixel()
211             v &= mask;  in write_pixel()
213         v |= (d & ~mask);  in write_pixel()
217         case 1:		*data = v;									break;  in write_pixel()
218         case 2:		*(uint16_t*)data = v;						break;  in write_pixel()
220             data[0] = v;  in write_pixel()
221             data[1] = v>>8;  in write_pixel()
222             data[2] = v>>16;  in write_pixel()
224         case 4:		*(uint32_t*)data = GGL_HOST_TO_RGBA(v);     break;  in write_pixel()
252 uint32_t ggl_expand(uint32_t v, int sbits, int dbits)  in ggl_expand()  argument
254     return expand(v, sbits, dbits);  in ggl_expand()
278 uint32_t extract(uint32_t v, int h, int l, int bits)  in extract()  argument
282 		v >>= l;  in extract()
285 		v &= (1<<(h-l))-1;  in extract()
287 	return v;  in extract()
291 uint32_t expand(uint32_t v, int sbits, int dbits)  in expand()  argument
296             v = (v<<dbits) - v;  in expand()
299                 v <<= (dbits-sbits);  in expand()
302                     v |= v>>sbits;  in expand()
309                     v |= v<<sbits;  in expand()
318 	return v;  in expand()
323 uint32_t downshift_component(	uint32_t in, uint32_t v,  in downshift_component()  argument
337             v -= (v>>dbits);				// fix up  in downshift_component()
339             if (shift >= 0)   v += (dither >> shift) << sl;  in downshift_component()
340             else              v += (dither << (-shift)) << sl;  in downshift_component()
355 		v <<= 32-sh;  in downshift_component()
362 			v >>= sh-dbits;  in downshift_component()
365             in |= v<<dl;  in downshift_component()
370             in |= v<<shift;  in downshift_component()
376 		if (shift > 0)      in |= v>>shift;  in downshift_component()
377 		else if (shift < 0) in |= v<<shift;  in downshift_component()
378 		else                in |= v;  in downshift_component()