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 "qapi/error.h"
8 #include "ui/console.h"
9 #include "standard-headers/drm/drm_fourcc.h"
10 #include "trace.h"
11
qemu_pixelformat_from_pixman(pixman_format_code_t format)12 PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
13 {
14 PixelFormat pf;
15 uint8_t bpp;
16
17 bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
18 pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
19 pf.depth = PIXMAN_FORMAT_DEPTH(format);
20
21 pf.abits = PIXMAN_FORMAT_A(format);
22 pf.rbits = PIXMAN_FORMAT_R(format);
23 pf.gbits = PIXMAN_FORMAT_G(format);
24 pf.bbits = PIXMAN_FORMAT_B(format);
25
26 switch (PIXMAN_FORMAT_TYPE(format)) {
27 case PIXMAN_TYPE_ARGB:
28 pf.ashift = pf.bbits + pf.gbits + pf.rbits;
29 pf.rshift = pf.bbits + pf.gbits;
30 pf.gshift = pf.bbits;
31 pf.bshift = 0;
32 break;
33 case PIXMAN_TYPE_ABGR:
34 pf.ashift = pf.rbits + pf.gbits + pf.bbits;
35 pf.bshift = pf.rbits + pf.gbits;
36 pf.gshift = pf.rbits;
37 pf.rshift = 0;
38 break;
39 case PIXMAN_TYPE_BGRA:
40 pf.bshift = bpp - pf.bbits;
41 pf.gshift = bpp - (pf.bbits + pf.gbits);
42 pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
43 pf.ashift = 0;
44 break;
45 case PIXMAN_TYPE_RGBA:
46 pf.rshift = bpp - pf.rbits;
47 pf.gshift = bpp - (pf.rbits + pf.gbits);
48 pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
49 pf.ashift = 0;
50 break;
51 default:
52 g_assert_not_reached();
53 break;
54 }
55
56 pf.amax = (1 << pf.abits) - 1;
57 pf.rmax = (1 << pf.rbits) - 1;
58 pf.gmax = (1 << pf.gbits) - 1;
59 pf.bmax = (1 << pf.bbits) - 1;
60 pf.amask = pf.amax << pf.ashift;
61 pf.rmask = pf.rmax << pf.rshift;
62 pf.gmask = pf.gmax << pf.gshift;
63 pf.bmask = pf.bmax << pf.bshift;
64
65 return pf;
66 }
67
qemu_default_pixman_format(int bpp,bool native_endian)68 pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
69 {
70 if (native_endian) {
71 switch (bpp) {
72 case 15:
73 return PIXMAN_x1r5g5b5;
74 case 16:
75 return PIXMAN_r5g6b5;
76 case 24:
77 return PIXMAN_r8g8b8;
78 case 32:
79 return PIXMAN_x8r8g8b8;
80 }
81 } else {
82 switch (bpp) {
83 case 24:
84 return PIXMAN_b8g8r8;
85 case 32:
86 return PIXMAN_b8g8r8x8;
87 break;
88 }
89 }
90 return 0;
91 }
92
93 /* Note: drm is little endian, pixman is native endian */
94 static const struct {
95 uint32_t drm_format;
96 pixman_format_code_t pixman_format;
97 } drm_format_pixman_map[] = {
98 { DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
99 { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
100 { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 },
101 { DRM_FORMAT_XBGR8888, PIXMAN_LE_x8b8g8r8 },
102 { DRM_FORMAT_ABGR8888, PIXMAN_LE_a8b8g8r8 },
103 };
104
qemu_drm_format_to_pixman(uint32_t drm_format)105 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
106 {
107 int i;
108
109 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
110 if (drm_format == drm_format_pixman_map[i].drm_format) {
111 return drm_format_pixman_map[i].pixman_format;
112 }
113 }
114 return 0;
115 }
116
qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)117 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)
118 {
119 int i;
120
121 for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
122 if (pixman_format == drm_format_pixman_map[i].pixman_format) {
123 return drm_format_pixman_map[i].drm_format;
124 }
125 }
126 return 0;
127 }
128
qemu_pixman_get_type(int rshift,int gshift,int bshift)129 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
130 {
131 int type = PIXMAN_TYPE_OTHER;
132
133 if (rshift > gshift && gshift > bshift) {
134 if (bshift == 0) {
135 type = PIXMAN_TYPE_ARGB;
136 } else {
137 type = PIXMAN_TYPE_RGBA;
138 }
139 } else if (rshift < gshift && gshift < bshift) {
140 if (rshift == 0) {
141 type = PIXMAN_TYPE_ABGR;
142 } else {
143 type = PIXMAN_TYPE_BGRA;
144 }
145 }
146 return type;
147 }
148
149 #ifdef CONFIG_PIXMAN
qemu_pixman_get_format(PixelFormat * pf)150 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
151 {
152 pixman_format_code_t format;
153 int type;
154
155 type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
156 format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
157 pf->abits, pf->rbits, pf->gbits, pf->bbits);
158 if (!pixman_format_supported_source(format)) {
159 return 0;
160 }
161 return format;
162 }
163 #endif
164
165 /*
166 * Return true for known-good pixman conversions.
167 *
168 * UIs using pixman for format conversion can hook this into
169 * DisplayChangeListenerOps->dpy_gfx_check_format
170 */
qemu_pixman_check_format(DisplayChangeListener * dcl,pixman_format_code_t format)171 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
172 pixman_format_code_t format)
173 {
174 switch (format) {
175 /* 32 bpp */
176 case PIXMAN_x8r8g8b8:
177 case PIXMAN_a8r8g8b8:
178 case PIXMAN_b8g8r8x8:
179 case PIXMAN_b8g8r8a8:
180 /* 24 bpp */
181 case PIXMAN_r8g8b8:
182 case PIXMAN_b8g8r8:
183 /* 16 bpp */
184 case PIXMAN_x1r5g5b5:
185 case PIXMAN_r5g6b5:
186 return true;
187 default:
188 return false;
189 }
190 }
191
192 #ifdef CONFIG_PIXMAN
qemu_pixman_linebuf_create(pixman_format_code_t format,int width)193 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
194 int width)
195 {
196 pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
197 assert(image != NULL);
198 return image;
199 }
200
201 /* fill linebuf from framebuffer */
qemu_pixman_linebuf_fill(pixman_image_t * linebuf,pixman_image_t * fb,int width,int x,int y)202 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
203 int width, int x, int y)
204 {
205 pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
206 x, y, 0, 0, 0, 0, width, 1);
207 }
208
qemu_pixman_mirror_create(pixman_format_code_t format,pixman_image_t * image)209 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
210 pixman_image_t *image)
211 {
212 return pixman_image_create_bits(format,
213 pixman_image_get_width(image),
214 pixman_image_get_height(image),
215 NULL,
216 pixman_image_get_stride(image));
217 }
218 #endif
219
qemu_pixman_image_unref(pixman_image_t * image)220 void qemu_pixman_image_unref(pixman_image_t *image)
221 {
222 if (image == NULL) {
223 return;
224 }
225 pixman_image_unref(image);
226 }
227
228 #ifdef CONFIG_PIXMAN
qemu_pixman_glyph_from_vgafont(int height,const uint8_t * font,unsigned int ch)229 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
230 unsigned int ch)
231 {
232 pixman_image_t *glyph;
233 uint8_t *data;
234 bool bit;
235 int x, y;
236
237 glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
238 NULL, 0);
239 data = (uint8_t *)pixman_image_get_data(glyph);
240
241 font += height * ch;
242 for (y = 0; y < height; y++, font++) {
243 for (x = 0; x < 8; x++, data++) {
244 bit = (*font) & (1 << (7-x));
245 *data = bit ? 0xff : 0x00;
246 }
247 }
248 return glyph;
249 }
250
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)251 void qemu_pixman_glyph_render(pixman_image_t *glyph,
252 pixman_image_t *surface,
253 pixman_color_t *fgcol,
254 pixman_color_t *bgcol,
255 int x, int y, int cw, int ch)
256 {
257 pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
258 pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
259
260 pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
261 0, 0, 0, 0,
262 cw * x, ch * y,
263 cw, ch);
264 pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
265 0, 0, 0, 0,
266 cw * x, ch * y,
267 cw, ch);
268 pixman_image_unref(ifg);
269 pixman_image_unref(ibg);
270 }
271 #endif /* CONFIG_PIXMAN */
272
273 #ifdef WIN32
274 void
qemu_pixman_win32_image_destroy(pixman_image_t * image,void * data)275 qemu_pixman_win32_image_destroy(pixman_image_t *image, void *data)
276 {
277 HANDLE handle = data;
278
279 qemu_win32_map_free(
280 pixman_image_get_data(image),
281 handle,
282 &error_warn
283 );
284 }
285 #endif
286