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 #include "trace.h"
  24
  25 static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
  26 {
  27     DisplaySurface *surface = qemu_console_surface(qxl->vga.con);
  28     uint8_t *dst = surface_data(surface);
  29     uint8_t *src;
  30     int len, i;
  31
  32     if (is_buffer_shared(surface)) {
  33         return;
  34     }
  35     trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
  36             rect->left, rect->right, rect->top, rect->bottom);
  37     src = qxl->guest_primary.data;
  38     if (qxl->guest_primary.qxl_stride < 0) {
  39         /* qxl surface is upside down, walk src scanlines
  40          * in reverse order to flip it */
  41         src += (qxl->guest_primary.surface.height - rect->top - 1) *
  42             qxl->guest_primary.abs_stride;
  43     } else {
  44         src += rect->top * qxl->guest_primary.abs_stride;
  45     }
  46     dst += rect->top  * qxl->guest_primary.abs_stride;
  47     src += rect->left * qxl->guest_primary.bytes_pp;
  48     dst += rect->left * qxl->guest_primary.bytes_pp;
  49     len  = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
  50
  51     for (i = rect->top; i < rect->bottom; i++) {
  52         memcpy(dst, src, len);
  53         dst += qxl->guest_primary.abs_stride;
  54         src += qxl->guest_primary.qxl_stride;
  55     }
  56 }
  57
  58 void qxl_render_resize(PCIQXLDevice *qxl)
  59 {
  60     QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
  61
  62     qxl->guest_primary.qxl_stride = sc->stride;
  63     qxl->guest_primary.abs_stride = abs(sc->stride);
  64     qxl->guest_primary.resized++;
  65     switch (sc->format) {
  66     case SPICE_SURFACE_FMT_16_555:
  67         qxl->guest_primary.bytes_pp = 2;
  68         qxl->guest_primary.bits_pp = 15;
  69         break;
  70     case SPICE_SURFACE_FMT_16_565:
  71         qxl->guest_primary.bytes_pp = 2;
  72         qxl->guest_primary.bits_pp = 16;
  73         break;
  74     case SPICE_SURFACE_FMT_32_xRGB:
  75     case SPICE_SURFACE_FMT_32_ARGB:
  76         qxl->guest_primary.bytes_pp = 4;
  77         qxl->guest_primary.bits_pp = 32;
  78         break;
  79     default:
  80         fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
  81                 qxl->guest_primary.surface.format);
  82         qxl->guest_primary.bytes_pp = 4;
  83         qxl->guest_primary.bits_pp = 32;
  84         break;
  85     }
  86 }
  87
  88 static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area)
  89 {
  90     area->left   = 0;
  91     area->right  = qxl->guest_primary.surface.width;
  92     area->top    = 0;
  93     area->bottom = qxl->guest_primary.surface.height;
  94 }
  95
  96 static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
  97 {
  98     VGACommonState *vga = &qxl->vga;
  99     DisplaySurface *surface;
 100     int i;
 101
 102     if (qxl->guest_primary.resized) {
 103         qxl->guest_primary.resized = 0;
 104         qxl->guest_primary.data = qxl_phys2virt(qxl,
 105                                                 qxl->guest_primary.surface.mem,
 106                                                 MEMSLOT_GROUP_GUEST);
 107         if (!qxl->guest_primary.data) {
 108             return;
 109         }
 110         qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
 111         qxl->num_dirty_rects = 1;
 112         trace_qxl_render_guest_primary_resized(
 113                qxl->guest_primary.surface.width,
 114                qxl->guest_primary.surface.height,
 115                qxl->guest_primary.qxl_stride,
 116                qxl->guest_primary.bytes_pp,
 117                qxl->guest_primary.bits_pp);
 118         if (qxl->guest_primary.qxl_stride > 0) {
 119             pixman_format_code_t format =
 120                 qemu_default_pixman_format(qxl->guest_primary.bits_pp, true);
 121             surface = qemu_create_displaysurface_from
 122                 (qxl->guest_primary.surface.width,
 123                  qxl->guest_primary.surface.height,
 124                  format,
 125                  qxl->guest_primary.abs_stride,
 126                  qxl->guest_primary.data);
 127         } else {
 128             surface = qemu_create_displaysurface
 129                 (qxl->guest_primary.surface.width,
 130                  qxl->guest_primary.surface.height);
 131         }
 132         dpy_gfx_replace_surface(vga->con, surface);
 133     }
 134
 135     if (!qxl->guest_primary.data) {
 136         return;
 137     }
 138     for (i = 0; i < qxl->num_dirty_rects; i++) {
 139         if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
 140             break;
 141         }
 142         if (qxl->dirty[i].left < 0 ||
 143             qxl->dirty[i].top < 0 ||
 144             qxl->dirty[i].left > qxl->dirty[i].right ||
 145             qxl->dirty[i].top > qxl->dirty[i].bottom ||
 146             qxl->dirty[i].right > qxl->guest_primary.surface.width ||
 147             qxl->dirty[i].bottom > qxl->guest_primary.surface.height) {
 148             continue;
 149         }
 150         qxl_blit(qxl, qxl->dirty+i);
 151         dpy_gfx_update(vga->con,
 152                        qxl->dirty[i].left, qxl->dirty[i].top,
 153                        qxl->dirty[i].right - qxl->dirty[i].left,
 154                        qxl->dirty[i].bottom - qxl->dirty[i].top);
 155     }
 156     qxl->num_dirty_rects = 0;
 157 }
 158
 159 /*
 160  * use ssd.lock to protect render_update_cookie_num.
 161  * qxl_render_update is called by io thread or vcpu thread, and the completion
 162  * callbacks are called by spice_server thread, defering to bh called from the
 163  * io thread.
 164  */
 165 void qxl_render_update(PCIQXLDevice *qxl)
 166 {
 167     QXLCookie *cookie;
 168
 169     qemu_mutex_lock(&qxl->ssd.lock);
 170
 171     if (!runstate_is_running() || !qxl->guest_primary.commands) {
 172         qxl_render_update_area_unlocked(qxl);
 173         qemu_mutex_unlock(&qxl->ssd.lock);
 174         return;
 175     }
 176
 177     qxl->guest_primary.commands = 0;
 178     qxl->render_update_cookie_num++;
 179     qemu_mutex_unlock(&qxl->ssd.lock);
 180     cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
 181                             0);
 182     qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
 183     qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
 184                           0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
 185 }
 186
 187 void qxl_render_update_area_bh(void *opaque)
 188 {
 189     PCIQXLDevice *qxl = opaque;
 190
 191     qemu_mutex_lock(&qxl->ssd.lock);
 192     qxl_render_update_area_unlocked(qxl);
 193     qemu_mutex_unlock(&qxl->ssd.lock);
 194 }
 195
 196 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
 197 {
 198     qemu_mutex_lock(&qxl->ssd.lock);
 199     trace_qxl_render_update_area_done(cookie);
 200     qemu_bh_schedule(qxl->update_area_bh);
 201     qxl->render_update_cookie_num--;
 202     qemu_mutex_unlock(&qxl->ssd.lock);
 203     g_free(cookie);
 204 }
 205
 206 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
 207 {
 208     QEMUCursor *c;
 209     uint8_t *image, *mask;
 210     size_t size;
 211
 212     c = cursor_alloc(cursor->header.width, cursor->header.height);
 213     c->hot_x = cursor->header.hot_spot_x;
 214     c->hot_y = cursor->header.hot_spot_y;
 215     switch (cursor->header.type) {
 216     case SPICE_CURSOR_TYPE_ALPHA:
 217         size = sizeof(uint32_t) * cursor->header.width * cursor->header.height;
 218         memcpy(c->data, cursor->chunk.data, size);
 219         if (qxl->debug > 2) {
 220             cursor_print_ascii_art(c, "qxl/alpha");
 221         }
 222         break;
 223     case SPICE_CURSOR_TYPE_MONO:
 224         mask  = cursor->chunk.data;
 225         image = mask + cursor_get_mono_bpl(c) * c->width;
 226         cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
 227         if (qxl->debug > 2) {
 228             cursor_print_ascii_art(c, "qxl/mono");
 229         }
 230         break;
 231     default:
 232         fprintf(stderr, "%s: not implemented: type %d\n",
 233                 __FUNCTION__, cursor->header.type);
 234         goto fail;
 235     }
 236     return c;
 237
 238 fail:
 239     cursor_put(c);
 240     return NULL;
 241 }
 242
 243
 244 /* called from spice server thread context only */
 245 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
 246 {
 247     QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
 248     QXLCursor *cursor;
 249     QEMUCursor *c;
 250
 251     if (!cmd) {
 252         return 1;
 253     }
 254
 255     if (!dpy_cursor_define_supported(qxl->vga.con)) {
 256         return 0;
 257     }
 258
 259     if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
 260         fprintf(stderr, "%s", __FUNCTION__);
 261         qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
 262         fprintf(stderr, "\n");
 263     }
 264     switch (cmd->type) {
 265     case QXL_CURSOR_SET:
 266         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
 267         if (!cursor) {
 268             return 1;
 269         }
 270         if (cursor->chunk.data_size != cursor->data_size) {
 271             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
 272             return 1;
 273         }
 274         c = qxl_cursor(qxl, cursor);
 275         if (c == NULL) {
 276             c = cursor_builtin_left_ptr();
 277         }
 278         qemu_mutex_lock(&qxl->ssd.lock);
 279         if (qxl->ssd.cursor) {
 280             cursor_put(qxl->ssd.cursor);
 281         }
 282         qxl->ssd.cursor = c;
 283         qxl->ssd.mouse_x = cmd->u.set.position.x;
 284         qxl->ssd.mouse_y = cmd->u.set.position.y;
 285         qemu_mutex_unlock(&qxl->ssd.lock);
 286         break;
 287     case QXL_CURSOR_MOVE:
 288         qemu_mutex_lock(&qxl->ssd.lock);
 289         qxl->ssd.mouse_x = cmd->u.position.x;
 290         qxl->ssd.mouse_y = cmd->u.position.y;
 291         qemu_mutex_unlock(&qxl->ssd.lock);
 292         break;
 293     }
 294     return 0;
 295 }