hw/display/qxl-render.c

   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 "qxl.h"
  23
  24 static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
  25 {
  26     DisplaySurface *surface = qemu_console_surface(qxl->vga.con);
  27     uint8_t *dst = surface_data(surface);
  28     uint8_t *src;
  29     int len, i;
  30
  31     if (is_buffer_shared(surface)) {
  32         return;
  33     }
  34     trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
  35             rect->left, rect->right, rect->top, rect->bottom);
  36     src = qxl->guest_primary.data;
  37     if (qxl->guest_primary.qxl_stride < 0) {
  38         /* qxl surface is upside down, walk src scanlines
  39          * in reverse order to flip it */
  40         src += (qxl->guest_primary.surface.height - rect->top - 1) *
  41             qxl->guest_primary.abs_stride;
  42     } else {
  43         src += rect->top * qxl->guest_primary.abs_stride;
  44     }
  45     dst += rect->top  * qxl->guest_primary.abs_stride;
  46     src += rect->left * qxl->guest_primary.bytes_pp;
  47     dst += rect->left * qxl->guest_primary.bytes_pp;
  48     len  = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
  49
  50     for (i = rect->top; i < rect->bottom; i++) {
  51         memcpy(dst, src, len);
  52         dst += qxl->guest_primary.abs_stride;
  53         src += qxl->guest_primary.qxl_stride;
  54     }
  55 }
  56
  57 void qxl_render_resize(PCIQXLDevice *qxl)
  58 {
  59     QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
  60
  61     qxl->guest_primary.qxl_stride = sc->stride;
  62     qxl->guest_primary.abs_stride = abs(sc->stride);
  63     qxl->guest_primary.resized++;
  64     switch (sc->format) {
  65     case SPICE_SURFACE_FMT_16_555:
  66         qxl->guest_primary.bytes_pp = 2;
  67         qxl->guest_primary.bits_pp = 15;
  68         break;
  69     case SPICE_SURFACE_FMT_16_565:
  70         qxl->guest_primary.bytes_pp = 2;
  71         qxl->guest_primary.bits_pp = 16;
  72         break;
  73     case SPICE_SURFACE_FMT_32_xRGB:
  74     case SPICE_SURFACE_FMT_32_ARGB:
  75         qxl->guest_primary.bytes_pp = 4;
  76         qxl->guest_primary.bits_pp = 32;
  77         break;
  78     default:
  79         fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
  80                 qxl->guest_primary.surface.format);
  81         qxl->guest_primary.bytes_pp = 4;
  82         qxl->guest_primary.bits_pp = 32;
  83         break;
  84     }
  85 }
  86
  87 static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area)
  88 {
  89     area->left   = 0;
  90     area->right  = qxl->guest_primary.surface.width;
  91     area->top    = 0;
  92     area->bottom = qxl->guest_primary.surface.height;
  93 }
  94
  95 static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
  96 {
  97     VGACommonState *vga = &qxl->vga;
  98     DisplaySurface *surface;
  99     int i;
 100
 101     if (qxl->guest_primary.resized) {
 102         qxl->guest_primary.resized = 0;
 103         qxl->guest_primary.data = qxl_phys2virt(qxl,
 104                                                 qxl->guest_primary.surface.mem,
 105                                                 MEMSLOT_GROUP_GUEST);
 106         if (!qxl->guest_primary.data) {
 107             return;
 108         }
 109         qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
 110         qxl->num_dirty_rects = 1;
 111         trace_qxl_render_guest_primary_resized(
 112                qxl->guest_primary.surface.width,
 113                qxl->guest_primary.surface.height,
 114                qxl->guest_primary.qxl_stride,
 115                qxl->guest_primary.bytes_pp,
 116                qxl->guest_primary.bits_pp);
 117         if (qxl->guest_primary.qxl_stride > 0) {
 118             surface = qemu_create_displaysurface_from
 119                 (qxl->guest_primary.surface.width,
 120                  qxl->guest_primary.surface.height,
 121                  qxl->guest_primary.bits_pp,
 122                  qxl->guest_primary.abs_stride,
 123                  qxl->guest_primary.data,
 124                  false);
 125         } else {
 126             surface = qemu_create_displaysurface
 127                 (qxl->guest_primary.surface.width,
 128                  qxl->guest_primary.surface.height);
 129         }
 130         dpy_gfx_replace_surface(vga->con, surface);
 131     }
 132
 133     if (!qxl->guest_primary.data) {
 134         return;
 135     }
 136     for (i = 0; i < qxl->num_dirty_rects; i++) {
 137         if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
 138             break;
 139         }
 140         qxl_blit(qxl, qxl->dirty+i);
 141         dpy_gfx_update(vga->con,
 142                        qxl->dirty[i].left, qxl->dirty[i].top,
 143                        qxl->dirty[i].right - qxl->dirty[i].left,
 144                        qxl->dirty[i].bottom - qxl->dirty[i].top);
 145     }
 146     qxl->num_dirty_rects = 0;
 147 }
 148
 149 /*
 150  * use ssd.lock to protect render_update_cookie_num.
 151  * qxl_render_update is called by io thread or vcpu thread, and the completion
 152  * callbacks are called by spice_server thread, defering to bh called from the
 153  * io thread.
 154  */
 155 void qxl_render_update(PCIQXLDevice *qxl)
 156 {
 157     QXLCookie *cookie;
 158
 159     qemu_mutex_lock(&qxl->ssd.lock);
 160
 161     if (!runstate_is_running() || !qxl->guest_primary.commands) {
 162         qxl_render_update_area_unlocked(qxl);
 163         qemu_mutex_unlock(&qxl->ssd.lock);
 164         return;
 165     }
 166
 167     qxl->guest_primary.commands = 0;
 168     qxl->render_update_cookie_num++;
 169     qemu_mutex_unlock(&qxl->ssd.lock);
 170     cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
 171                             0);
 172     qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
 173     qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
 174                           0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
 175 }
 176
 177 void qxl_render_update_area_bh(void *opaque)
 178 {
 179     PCIQXLDevice *qxl = opaque;
 180
 181     qemu_mutex_lock(&qxl->ssd.lock);
 182     qxl_render_update_area_unlocked(qxl);
 183     qemu_mutex_unlock(&qxl->ssd.lock);
 184 }
 185
 186 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
 187 {
 188     qemu_mutex_lock(&qxl->ssd.lock);
 189     trace_qxl_render_update_area_done(cookie);
 190     qemu_bh_schedule(qxl->update_area_bh);
 191     qxl->render_update_cookie_num--;
 192     qemu_mutex_unlock(&qxl->ssd.lock);
 193     g_free(cookie);
 194 }
 195
 196 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
 197 {
 198     QEMUCursor *c;
 199     uint8_t *image, *mask;
 200     size_t size;
 201
 202     c = cursor_alloc(cursor->header.width, cursor->header.height);
 203     c->hot_x = cursor->header.hot_spot_x;
 204     c->hot_y = cursor->header.hot_spot_y;
 205     switch (cursor->header.type) {
 206     case SPICE_CURSOR_TYPE_ALPHA:
 207         size = sizeof(uint32_t) * cursor->header.width * cursor->header.height;
 208         memcpy(c->data, cursor->chunk.data, size);
 209         if (qxl->debug > 2) {
 210             cursor_print_ascii_art(c, "qxl/alpha");
 211         }
 212         break;
 213     case SPICE_CURSOR_TYPE_MONO:
 214         mask  = cursor->chunk.data;
 215         image = mask + cursor_get_mono_bpl(c) * c->width;
 216         cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
 217         if (qxl->debug > 2) {
 218             cursor_print_ascii_art(c, "qxl/mono");
 219         }
 220         break;
 221     default:
 222         fprintf(stderr, "%s: not implemented: type %d\n",
 223                 __FUNCTION__, cursor->header.type);
 224         goto fail;
 225     }
 226     return c;
 227
 228 fail:
 229     cursor_put(c);
 230     return NULL;
 231 }
 232
 233
 234 /* called from spice server thread context only */
 235 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
 236 {
 237     QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
 238     QXLCursor *cursor;
 239     QEMUCursor *c;
 240
 241     if (!cmd) {
 242         return 1;
 243     }
 244
 245     if (!dpy_cursor_define_supported(qxl->vga.con)) {
 246         return 0;
 247     }
 248
 249     if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
 250         fprintf(stderr, "%s", __FUNCTION__);
 251         qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
 252         fprintf(stderr, "\n");
 253     }
 254     switch (cmd->type) {
 255     case QXL_CURSOR_SET:
 256         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
 257         if (!cursor) {
 258             return 1;
 259         }
 260         if (cursor->chunk.data_size != cursor->data_size) {
 261             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
 262             return 1;
 263         }
 264         c = qxl_cursor(qxl, cursor);
 265         if (c == NULL) {
 266             c = cursor_builtin_left_ptr();
 267         }
 268         qemu_mutex_lock(&qxl->ssd.lock);
 269         if (qxl->ssd.cursor) {
 270             cursor_put(qxl->ssd.cursor);
 271         }
 272         qxl->ssd.cursor = c;
 273         qxl->ssd.mouse_x = cmd->u.set.position.x;
 274         qxl->ssd.mouse_y = cmd->u.set.position.y;
 275         qemu_mutex_unlock(&qxl->ssd.lock);
 276         break;
 277     case QXL_CURSOR_MOVE:
 278         qemu_mutex_lock(&qxl->ssd.lock);
 279         qxl->ssd.mouse_x = cmd->u.position.x;
 280         qxl->ssd.mouse_y = cmd->u.position.y;
 281         qemu_mutex_unlock(&qxl->ssd.lock);
 282         break;
 283     }
 284     return 0;
 285 }