1 /*
2 * This work is licensed under the terms of the GNU GPL, version 2 or later.
3 * See the COPYING file in the top-level directory.
4 */
5
6 #include "qemu/osdep.h"
7 #include "ui/console.h"
8 #include "standard-headers/drm/drm_fourcc.h"
9 #include "trace.h"
10
qemu_pixelformat_from_pixman(pixman_format_code_t format)11 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
12 {
13 PixelFormat pf;
14 uint8_t bpp;
15
16 bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
17 pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
18 pf.depth = PIXMAN_FORMAT_DEPTH(format);
19
20 pf.abits = PIXMAN_FORMAT_A(format);
21 pf.rbits = PIXMAN_FORMAT_R(format);
22 pf.gbits = PIXMAN_FORMAT_G(format);
23 pf.bbits = PIXMAN_FORMAT_B(format);
24
25 switch (PIXMAN_FORMAT_TYPE(format)) {
26 case PIXMAN_TYPE_ARGB:
27 pf.ashift = pf.bbits + pf.gbits + pf.rbits;
28 pf.rshift = pf.bbits + pf.gbits;
29 pf.gshift = pf.bbits;
30 pf.bshift = 0;
31 break;
32 case PIXMAN_TYPE_ABGR:
33 pf.ashift = pf.rbits + pf.gbits + pf.bbits;
34 pf.bshift = pf.rbits + pf.gbits;
35 pf.gshift = pf.rbits;
36 pf.rshift = 0;
37 break;
38 case PIXMAN_TYPE_BGRA:
39 pf.bshift = bpp - pf.bbits;
40 pf.gshift = bpp - (pf.bbits + pf.gbits);
41 pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
42 pf.ashift = 0;
43 break;
44 case PIXMAN_TYPE_RGBA:
45 pf.rshift = bpp - pf.rbits;
46 pf.gshift = bpp - (pf.rbits + pf.gbits);
47 pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
48 pf.ashift = 0;
49 break;
50 default:
51 g_assert_not_reached();
52 }
53
54 pf.amax = (1 << pf.abits) - 1;
55 pf.rmax = (1 << pf.rbits) - 1;
56 pf.gmax = (1 << pf.gbits) - 1;
57 pf.bmax = (1 << pf.bbits) - 1;
58 pf.amask = pf.amax << pf.ashift;
59 pf.rmask = pf.rmax << pf.rshift;
60 pf.gmask = pf.gmax << pf.gshift;
61 pf.bmask = pf.bmax << pf.bshift;
62
63 return pf;
64 }
65
qemu_default_pixman_format(int bpp,bool native_endian)66 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
67 {
68 if (native_endian) {
69 switch (bpp) {
70 case 15:
71 return PIXMAN_x1r5g5b5;
72 case 16:
73 return PIXMAN_r5g6b5;
74 case 24:
75 return PIXMAN_r8g8b8;
76 case 32:
77 return PIXMAN_x8r8g8b8;
78 }
79 } else {
80 switch (bpp) {
81 case 24:
82 return PIXMAN_b8g8r8;
83 case 32:
84 return PIXMAN_b8g8r8x8;
85 break;
86 }
87 }
88 return 0;
89 }
90
91 /* Note: drm is little endian, pixman is native endian */
92 static const struct {
93 uint32_t drm_format;
94 pixman_format_code_t pixman_format;
95 } drm_format_pixman_map[] = {
96 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
97 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
98 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 },
99 { DRM_FORMAT_XBGR8888, PIXMAN_LE_x8b8g8r8 },
100 { DRM_FORMAT_ABGR8888, PIXMAN_LE_a8b8g8r8 },
101 };
102
qemu_drm_format_to_pixman(uint32_t drm_format)103 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
104 {
105 int i;
106
107 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
108 if (drm_format == drm_format_pixman_map[i].drm_format) {
109 return drm_format_pixman_map[i].pixman_format;
110 }
111 }
112 return 0;
113 }
114
qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)115 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)
116 {
117 int i;
118
119 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
120 if (pixman_format == drm_format_pixman_map[i].pixman_format) {
121 return drm_format_pixman_map[i].drm_format;
122 }
123 }
124 return 0;
125 }
126
qemu_pixman_get_type(int rshift,int gshift,int bshift)127 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
128 {
129 int type = PIXMAN_TYPE_OTHER;
130
131 if (rshift > gshift && gshift > bshift) {
132 if (bshift == 0) {
133 type = PIXMAN_TYPE_ARGB;
134 } else {
135 type = PIXMAN_TYPE_RGBA;
136 }
137 } else if (rshift < gshift && gshift < bshift) {
138 if (rshift == 0) {
139 type = PIXMAN_TYPE_ABGR;
140 } else {
141 type = PIXMAN_TYPE_BGRA;
142 }
143 }
144 return type;
145 }
146
147 #ifdef CONFIG_PIXMAN
qemu_pixman_get_format(PixelFormat * pf)148 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
149 {
150 pixman_format_code_t format;
151 int type;
152
153 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
154 format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
155 pf->abits, pf->rbits, pf->gbits, pf->bbits);
156 if (!pixman_format_supported_source(format)) {
157 return 0;
158 }
159 return format;
160 }
161 #endif
162
163 /*
164 * Return true for known-good pixman conversions.
165 *
166 * UIs using pixman for format conversion can hook this into
167 * DisplayChangeListenerOps->dpy_gfx_check_format
168 */
qemu_pixman_check_format(DisplayChangeListener * dcl,pixman_format_code_t format)169 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
170 pixman_format_code_t format)
171 {
172 switch (format) {
173 /* 32 bpp */
174 case PIXMAN_x8r8g8b8:
175 case PIXMAN_a8r8g8b8:
176 case PIXMAN_b8g8r8x8:
177 case PIXMAN_b8g8r8a8:
178 /* 24 bpp */
179 case PIXMAN_r8g8b8:
180 case PIXMAN_b8g8r8:
181 /* 16 bpp */
182 case PIXMAN_x1r5g5b5:
183 case PIXMAN_r5g6b5:
184 return true;
185 default:
186 return false;
187 }
188 }
189
190 #ifdef CONFIG_PIXMAN
qemu_pixman_linebuf_create(pixman_format_code_t format,int width)191 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
192 int width)
193 {
194 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
195 assert(image != NULL);
196 return image;
197 }
198
199 /* fill linebuf from framebuffer */
qemu_pixman_linebuf_fill(pixman_image_t * linebuf,pixman_image_t * fb,int width,int x,int y)200 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
201 int width, int x, int y)
202 {
203 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
204 x, y, 0, 0, 0, 0, width, 1);
205 }
206
qemu_pixman_mirror_create(pixman_format_code_t format,pixman_image_t * image)207 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
208 pixman_image_t *image)
209 {
210 return pixman_image_create_bits(format,
211 pixman_image_get_width(image),
212 pixman_image_get_height(image),
213 NULL,
214 pixman_image_get_stride(image));
215 }
216 #endif
217
qemu_pixman_image_unref(pixman_image_t * image)218 void qemu_pixman_image_unref(pixman_image_t *image)
219 {
220 if (image == NULL) {
221 return;
222 }
223 pixman_image_unref(image);
224 }
225
226 #ifdef CONFIG_PIXMAN
qemu_pixman_glyph_from_vgafont(int height,const uint8_t * font,unsigned int ch)227 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
228 unsigned int ch)
229 {
230 pixman_image_t *glyph;
231 uint8_t *data;
232 bool bit;
233 int x, y;
234
235 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
236 NULL, 0);
237 data = (uint8_t *)pixman_image_get_data(glyph);
238
239 font += height * ch;
240 for (y = 0; y < height; y++, font++) {
241 for (x = 0; x < 8; x++, data++) {
242 bit = (*font) & (1 << (7-x));
243 *data = bit ? 0xff : 0x00;
244 }
245 }
246 return glyph;
247 }
248
qemu_pixman_glyph_render(pixman_image_t * glyph,pixman_image_t * surface,pixman_color_t * fgcol,pixman_color_t * bgcol,int x,int y,int cw,int ch)249 void qemu_pixman_glyph_render(pixman_image_t *glyph,
250 pixman_image_t *surface,
251 pixman_color_t *fgcol,
252 pixman_color_t *bgcol,
253 int x, int y, int cw, int ch)
254 {
255 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
256 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
257
258 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
259 0, 0, 0, 0,
260 cw * x, ch * y,
261 cw, ch);
262 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
263 0, 0, 0, 0,
264 cw * x, ch * y,
265 cw, ch);
266 pixman_image_unref(ifg);
267 pixman_image_unref(ibg);
268 }
269 #endif /* CONFIG_PIXMAN */
270