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", __FUNCTION__, 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 i; 102 103 if (qxl->guest_primary.resized) { 104 qxl->guest_primary.resized = 0; 105 qxl->guest_primary.data = qxl_phys2virt(qxl, 106 qxl->guest_primary.surface.mem, 107 MEMSLOT_GROUP_GUEST); 108 if (!qxl->guest_primary.data) { 109 return; 110 } 111 qxl_set_rect_to_surface(qxl, &qxl->dirty[0]); 112 qxl->num_dirty_rects = 1; 113 trace_qxl_render_guest_primary_resized( 114 qxl->guest_primary.surface.width, 115 qxl->guest_primary.surface.height, 116 qxl->guest_primary.qxl_stride, 117 qxl->guest_primary.bytes_pp, 118 qxl->guest_primary.bits_pp); 119 if (qxl->guest_primary.qxl_stride > 0) { 120 pixman_format_code_t format = 121 qemu_default_pixman_format(qxl->guest_primary.bits_pp, true); 122 surface = qemu_create_displaysurface_from 123 (qxl->guest_primary.surface.width, 124 qxl->guest_primary.surface.height, 125 format, 126 qxl->guest_primary.abs_stride, 127 qxl->guest_primary.data); 128 } else { 129 surface = qemu_create_displaysurface 130 (qxl->guest_primary.surface.width, 131 qxl->guest_primary.surface.height); 132 } 133 dpy_gfx_replace_surface(vga->con, surface); 134 } 135 136 if (!qxl->guest_primary.data) { 137 return; 138 } 139 for (i = 0; i < qxl->num_dirty_rects; i++) { 140 if (qemu_spice_rect_is_empty(qxl->dirty+i)) { 141 break; 142 } 143 if (qxl->dirty[i].left < 0 || 144 qxl->dirty[i].top < 0 || 145 qxl->dirty[i].left > qxl->dirty[i].right || 146 qxl->dirty[i].top > qxl->dirty[i].bottom || 147 qxl->dirty[i].right > qxl->guest_primary.surface.width || 148 qxl->dirty[i].bottom > qxl->guest_primary.surface.height) { 149 continue; 150 } 151 qxl_blit(qxl, qxl->dirty+i); 152 dpy_gfx_update(vga->con, 153 qxl->dirty[i].left, qxl->dirty[i].top, 154 qxl->dirty[i].right - qxl->dirty[i].left, 155 qxl->dirty[i].bottom - qxl->dirty[i].top); 156 } 157 qxl->num_dirty_rects = 0; 158 } 159 160 /* 161 * use ssd.lock to protect render_update_cookie_num. 162 * qxl_render_update is called by io thread or vcpu thread, and the completion 163 * callbacks are called by spice_server thread, deferring to bh called from the 164 * io thread. 165 */ 166 void qxl_render_update(PCIQXLDevice *qxl) 167 { 168 QXLCookie *cookie; 169 170 qemu_mutex_lock(&qxl->ssd.lock); 171 172 if (!runstate_is_running() || !qxl->guest_primary.commands) { 173 qxl_render_update_area_unlocked(qxl); 174 qemu_mutex_unlock(&qxl->ssd.lock); 175 return; 176 } 177 178 qxl->guest_primary.commands = 0; 179 qxl->render_update_cookie_num++; 180 qemu_mutex_unlock(&qxl->ssd.lock); 181 cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA, 182 0); 183 qxl_set_rect_to_surface(qxl, &cookie->u.render.area); 184 qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL, 185 0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie); 186 } 187 188 void qxl_render_update_area_bh(void *opaque) 189 { 190 PCIQXLDevice *qxl = opaque; 191 192 qemu_mutex_lock(&qxl->ssd.lock); 193 qxl_render_update_area_unlocked(qxl); 194 qemu_mutex_unlock(&qxl->ssd.lock); 195 } 196 197 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie) 198 { 199 qemu_mutex_lock(&qxl->ssd.lock); 200 trace_qxl_render_update_area_done(cookie); 201 qemu_bh_schedule(qxl->update_area_bh); 202 qxl->render_update_cookie_num--; 203 qemu_mutex_unlock(&qxl->ssd.lock); 204 g_free(cookie); 205 } 206 207 static void qxl_unpack_chunks(void *dest, size_t size, PCIQXLDevice *qxl, 208 QXLDataChunk *chunk, uint32_t group_id) 209 { 210 uint32_t max_chunks = 32; 211 size_t offset = 0; 212 size_t bytes; 213 214 for (;;) { 215 bytes = MIN(size - offset, chunk->data_size); 216 memcpy(dest + offset, chunk->data, bytes); 217 offset += bytes; 218 if (offset == size) { 219 return; 220 } 221 chunk = qxl_phys2virt(qxl, chunk->next_chunk, group_id); 222 if (!chunk) { 223 return; 224 } 225 max_chunks--; 226 if (max_chunks == 0) { 227 return; 228 } 229 } 230 } 231 232 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor, 233 uint32_t group_id) 234 { 235 QEMUCursor *c; 236 size_t size; 237 238 c = cursor_alloc(cursor->header.width, cursor->header.height); 239 c->hot_x = cursor->header.hot_spot_x; 240 c->hot_y = cursor->header.hot_spot_y; 241 switch (cursor->header.type) { 242 case SPICE_CURSOR_TYPE_ALPHA: 243 size = sizeof(uint32_t) * cursor->header.width * cursor->header.height; 244 qxl_unpack_chunks(c->data, size, qxl, &cursor->chunk, group_id); 245 if (qxl->debug > 2) { 246 cursor_print_ascii_art(c, "qxl/alpha"); 247 } 248 break; 249 default: 250 fprintf(stderr, "%s: not implemented: type %d\n", 251 __FUNCTION__, cursor->header.type); 252 goto fail; 253 } 254 return c; 255 256 fail: 257 cursor_put(c); 258 return NULL; 259 } 260 261 262 /* called from spice server thread context only */ 263 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext) 264 { 265 QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id); 266 QXLCursor *cursor; 267 QEMUCursor *c; 268 269 if (!cmd) { 270 return 1; 271 } 272 273 if (!dpy_cursor_define_supported(qxl->vga.con)) { 274 return 0; 275 } 276 277 if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) { 278 fprintf(stderr, "%s", __FUNCTION__); 279 qxl_log_cmd_cursor(qxl, cmd, ext->group_id); 280 fprintf(stderr, "\n"); 281 } 282 switch (cmd->type) { 283 case QXL_CURSOR_SET: 284 cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id); 285 if (!cursor) { 286 return 1; 287 } 288 c = qxl_cursor(qxl, cursor, ext->group_id); 289 if (c == NULL) { 290 c = cursor_builtin_left_ptr(); 291 } 292 qemu_mutex_lock(&qxl->ssd.lock); 293 if (qxl->ssd.cursor) { 294 cursor_put(qxl->ssd.cursor); 295 } 296 qxl->ssd.cursor = c; 297 qxl->ssd.mouse_x = cmd->u.set.position.x; 298 qxl->ssd.mouse_y = cmd->u.set.position.y; 299 qemu_mutex_unlock(&qxl->ssd.lock); 300 qemu_bh_schedule(qxl->ssd.cursor_bh); 301 break; 302 case QXL_CURSOR_MOVE: 303 qemu_mutex_lock(&qxl->ssd.lock); 304 qxl->ssd.mouse_x = cmd->u.position.x; 305 qxl->ssd.mouse_y = cmd->u.position.y; 306 qemu_mutex_unlock(&qxl->ssd.lock); 307 qemu_bh_schedule(qxl->ssd.cursor_bh); 308 break; 309 } 310 return 0; 311 } 312