1 /* 2 * qxl local rendering (aka display on sdl/vnc) 3 * 4 * Copyright (C) 2010 Red Hat, Inc. 5 * 6 * maintained by Gerd Hoffmann <kraxel@redhat.com> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 or 11 * (at your option) version 3 of the License. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "qxl.h" 24 #include "trace.h" 25 26 static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect) 27 { 28 DisplaySurface *surface = qemu_console_surface(qxl->vga.con); 29 uint8_t *dst = surface_data(surface); 30 uint8_t *src; 31 int len, i; 32 33 if (is_buffer_shared(surface)) { 34 return; 35 } 36 trace_qxl_render_blit(qxl->guest_primary.qxl_stride, 37 rect->left, rect->right, rect->top, rect->bottom); 38 src = qxl->guest_primary.data; 39 if (qxl->guest_primary.qxl_stride < 0) { 40 /* qxl surface is upside down, walk src scanlines 41 * in reverse order to flip it */ 42 src += (qxl->guest_primary.surface.height - rect->top - 1) * 43 qxl->guest_primary.abs_stride; 44 } else { 45 src += rect->top * qxl->guest_primary.abs_stride; 46 } 47 dst += rect->top * qxl->guest_primary.abs_stride; 48 src += rect->left * qxl->guest_primary.bytes_pp; 49 dst += rect->left * qxl->guest_primary.bytes_pp; 50 len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp; 51 52 for (i = rect->top; i < rect->bottom; i++) { 53 memcpy(dst, src, len); 54 dst += qxl->guest_primary.abs_stride; 55 src += qxl->guest_primary.qxl_stride; 56 } 57 } 58 59 void qxl_render_resize(PCIQXLDevice *qxl) 60 { 61 QXLSurfaceCreate *sc = &qxl->guest_primary.surface; 62 63 qxl->guest_primary.qxl_stride = sc->stride; 64 qxl->guest_primary.abs_stride = abs(sc->stride); 65 qxl->guest_primary.resized++; 66 switch (sc->format) { 67 case SPICE_SURFACE_FMT_16_555: 68 qxl->guest_primary.bytes_pp = 2; 69 qxl->guest_primary.bits_pp = 15; 70 break; 71 case SPICE_SURFACE_FMT_16_565: 72 qxl->guest_primary.bytes_pp = 2; 73 qxl->guest_primary.bits_pp = 16; 74 break; 75 case SPICE_SURFACE_FMT_32_xRGB: 76 case SPICE_SURFACE_FMT_32_ARGB: 77 qxl->guest_primary.bytes_pp = 4; 78 qxl->guest_primary.bits_pp = 32; 79 break; 80 default: 81 fprintf(stderr, "%s: unhandled format: %x\n", __func__, 82 qxl->guest_primary.surface.format); 83 qxl->guest_primary.bytes_pp = 4; 84 qxl->guest_primary.bits_pp = 32; 85 break; 86 } 87 } 88 89 static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area) 90 { 91 area->left = 0; 92 area->right = qxl->guest_primary.surface.width; 93 area->top = 0; 94 area->bottom = qxl->guest_primary.surface.height; 95 } 96 97 static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl) 98 { 99 VGACommonState *vga = &qxl->vga; 100 DisplaySurface *surface; 101 int width = qxl->guest_head0_width ?: qxl->guest_primary.surface.width; 102 int height = qxl->guest_head0_height ?: qxl->guest_primary.surface.height; 103 int i; 104 105 if (qxl->guest_primary.resized) { 106 qxl->guest_primary.resized = 0; 107 qxl->guest_primary.data = qxl_phys2virt(qxl, 108 qxl->guest_primary.surface.mem, 109 MEMSLOT_GROUP_GUEST); 110 if (!qxl->guest_primary.data) { 111 return; 112 } 113 qxl_set_rect_to_surface(qxl, &qxl->dirty[0]); 114 qxl->num_dirty_rects = 1; 115 trace_qxl_render_guest_primary_resized( 116 width, 117 height, 118 qxl->guest_primary.qxl_stride, 119 qxl->guest_primary.bytes_pp, 120 qxl->guest_primary.bits_pp); 121 if (qxl->guest_primary.qxl_stride > 0) { 122 pixman_format_code_t format = 123 qemu_default_pixman_format(qxl->guest_primary.bits_pp, true); 124 surface = qemu_create_displaysurface_from 125 (width, 126 height, 127 format, 128 qxl->guest_primary.abs_stride, 129 qxl->guest_primary.data); 130 } else { 131 surface = qemu_create_displaysurface 132 (width, 133 height); 134 } 135 dpy_gfx_replace_surface(vga->con, surface); 136 } 137 138 if (!qxl->guest_primary.data) { 139 return; 140 } 141 for (i = 0; i < qxl->num_dirty_rects; i++) { 142 if (qemu_spice_rect_is_empty(qxl->dirty+i)) { 143 break; 144 } 145 if (qxl->dirty[i].left < 0 || 146 qxl->dirty[i].top < 0 || 147 qxl->dirty[i].left > qxl->dirty[i].right || 148 qxl->dirty[i].top > qxl->dirty[i].bottom || 149 qxl->dirty[i].right > width || 150 qxl->dirty[i].bottom > height) { 151 continue; 152 } 153 qxl_blit(qxl, qxl->dirty+i); 154 dpy_gfx_update(vga->con, 155 qxl->dirty[i].left, qxl->dirty[i].top, 156 qxl->dirty[i].right - qxl->dirty[i].left, 157 qxl->dirty[i].bottom - qxl->dirty[i].top); 158 } 159 qxl->num_dirty_rects = 0; 160 } 161 162 /* 163 * use ssd.lock to protect render_update_cookie_num. 164 * qxl_render_update is called by io thread or vcpu thread, and the completion 165 * callbacks are called by spice_server thread, deferring to bh called from the 166 * io thread. 167 */ 168 void qxl_render_update(PCIQXLDevice *qxl) 169 { 170 QXLCookie *cookie; 171 172 qemu_mutex_lock(&qxl->ssd.lock); 173 174 if (!runstate_is_running() || !qxl->guest_primary.commands || 175 qxl->mode == QXL_MODE_UNDEFINED) { 176 qxl_render_update_area_unlocked(qxl); 177 qemu_mutex_unlock(&qxl->ssd.lock); 178 return; 179 } 180 181 qxl->guest_primary.commands = 0; 182 qxl->render_update_cookie_num++; 183 qemu_mutex_unlock(&qxl->ssd.lock); 184 cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA, 185 0); 186 qxl_set_rect_to_surface(qxl, &cookie->u.render.area); 187 qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL, 188 0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie); 189 } 190 191 void qxl_render_update_area_bh(void *opaque) 192 { 193 PCIQXLDevice *qxl = opaque; 194 195 qemu_mutex_lock(&qxl->ssd.lock); 196 qxl_render_update_area_unlocked(qxl); 197 qemu_mutex_unlock(&qxl->ssd.lock); 198 } 199 200 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie) 201 { 202 qemu_mutex_lock(&qxl->ssd.lock); 203 trace_qxl_render_update_area_done(cookie); 204 qemu_bh_schedule(qxl->update_area_bh); 205 qxl->render_update_cookie_num--; 206 qemu_mutex_unlock(&qxl->ssd.lock); 207 g_free(cookie); 208 } 209 210 static void qxl_unpack_chunks(void *dest, size_t size, PCIQXLDevice *qxl, 211 QXLDataChunk *chunk, uint32_t group_id) 212 { 213 uint32_t max_chunks = 32; 214 size_t offset = 0; 215 size_t bytes; 216 217 for (;;) { 218 bytes = MIN(size - offset, chunk->data_size); 219 memcpy(dest + offset, chunk->data, bytes); 220 offset += bytes; 221 if (offset == size) { 222 return; 223 } 224 chunk = qxl_phys2virt(qxl, chunk->next_chunk, group_id); 225 if (!chunk) { 226 return; 227 } 228 max_chunks--; 229 if (max_chunks == 0) { 230 return; 231 } 232 } 233 } 234 235 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor, 236 uint32_t group_id) 237 { 238 QEMUCursor *c; 239 uint8_t *and_mask, *xor_mask; 240 size_t size; 241 242 c = cursor_alloc(cursor->header.width, cursor->header.height); 243 c->hot_x = cursor->header.hot_spot_x; 244 c->hot_y = cursor->header.hot_spot_y; 245 switch (cursor->header.type) { 246 case SPICE_CURSOR_TYPE_MONO: 247 /* Assume that the full cursor is available in a single chunk. */ 248 size = 2 * cursor_get_mono_bpl(c) * c->height; 249 if (size != cursor->data_size) { 250 fprintf(stderr, "%s: bad monochrome cursor %ux%u with size %u\n", 251 __func__, c->width, c->height, cursor->data_size); 252 goto fail; 253 } 254 and_mask = cursor->chunk.data; 255 xor_mask = and_mask + cursor_get_mono_bpl(c) * c->height; 256 cursor_set_mono(c, 0xffffff, 0x000000, xor_mask, 1, and_mask); 257 if (qxl->debug > 2) { 258 cursor_print_ascii_art(c, "qxl/mono"); 259 } 260 break; 261 case SPICE_CURSOR_TYPE_ALPHA: 262 size = sizeof(uint32_t) * cursor->header.width * cursor->header.height; 263 qxl_unpack_chunks(c->data, size, qxl, &cursor->chunk, group_id); 264 if (qxl->debug > 2) { 265 cursor_print_ascii_art(c, "qxl/alpha"); 266 } 267 break; 268 default: 269 fprintf(stderr, "%s: not implemented: type %d\n", 270 __func__, cursor->header.type); 271 goto fail; 272 } 273 return c; 274 275 fail: 276 cursor_put(c); 277 return NULL; 278 } 279 280 281 /* called from spice server thread context only */ 282 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext) 283 { 284 QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id); 285 QXLCursor *cursor; 286 QEMUCursor *c; 287 288 if (!cmd) { 289 return 1; 290 } 291 292 if (!dpy_cursor_define_supported(qxl->vga.con)) { 293 return 0; 294 } 295 296 if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) { 297 fprintf(stderr, "%s", __func__); 298 qxl_log_cmd_cursor(qxl, cmd, ext->group_id); 299 fprintf(stderr, "\n"); 300 } 301 switch (cmd->type) { 302 case QXL_CURSOR_SET: 303 cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id); 304 if (!cursor) { 305 return 1; 306 } 307 c = qxl_cursor(qxl, cursor, ext->group_id); 308 if (c == NULL) { 309 c = cursor_builtin_left_ptr(); 310 } 311 qemu_mutex_lock(&qxl->ssd.lock); 312 if (qxl->ssd.cursor) { 313 cursor_put(qxl->ssd.cursor); 314 } 315 qxl->ssd.cursor = c; 316 qxl->ssd.mouse_x = cmd->u.set.position.x; 317 qxl->ssd.mouse_y = cmd->u.set.position.y; 318 qemu_mutex_unlock(&qxl->ssd.lock); 319 qemu_bh_schedule(qxl->ssd.cursor_bh); 320 break; 321 case QXL_CURSOR_MOVE: 322 qemu_mutex_lock(&qxl->ssd.lock); 323 qxl->ssd.mouse_x = cmd->u.position.x; 324 qxl->ssd.mouse_y = cmd->u.position.y; 325 qemu_mutex_unlock(&qxl->ssd.lock); 326 qemu_bh_schedule(qxl->ssd.cursor_bh); 327 break; 328 } 329 return 0; 330 } 331