hw/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     uint8_t *src;
  27     uint8_t *dst = qxl->vga.ds->surface->data;
  28     int len, i;
  29
  30     if (is_buffer_shared(qxl->vga.ds->surface)) {
  31         return;
  32     }
  33     if (!qxl->guest_primary.data) {
  34         dprint(qxl, 1, "%s: initializing guest_primary.data\n", __func__);
  35         qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
  36     }
  37     dprint(qxl, 2, "%s: stride %d, [%d, %d, %d, %d]\n", __func__,
  38             qxl->guest_primary.qxl_stride,
  39             rect->left, rect->right, rect->top, rect->bottom);
  40     src = qxl->guest_primary.data;
  41     if (qxl->guest_primary.qxl_stride < 0) {
  42         /* qxl surface is upside down, walk src scanlines
  43          * in reverse order to flip it */
  44         src += (qxl->guest_primary.surface.height - rect->top - 1) *
  45             qxl->guest_primary.abs_stride;
  46     } else {
  47         src += rect->top * qxl->guest_primary.abs_stride;
  48     }
  49     dst += rect->top  * qxl->guest_primary.abs_stride;
  50     src += rect->left * qxl->guest_primary.bytes_pp;
  51     dst += rect->left * qxl->guest_primary.bytes_pp;
  52     len  = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
  53
  54     for (i = rect->top; i < rect->bottom; i++) {
  55         memcpy(dst, src, len);
  56         dst += qxl->guest_primary.abs_stride;
  57         src += qxl->guest_primary.qxl_stride;
  58     }
  59 }
  60
  61 void qxl_render_resize(PCIQXLDevice *qxl)
  62 {
  63     QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
  64
  65     qxl->guest_primary.qxl_stride = sc->stride;
  66     qxl->guest_primary.abs_stride = abs(sc->stride);
  67     qxl->guest_primary.resized++;
  68     switch (sc->format) {
  69     case SPICE_SURFACE_FMT_16_555:
  70         qxl->guest_primary.bytes_pp = 2;
  71         qxl->guest_primary.bits_pp = 15;
  72         break;
  73     case SPICE_SURFACE_FMT_16_565:
  74         qxl->guest_primary.bytes_pp = 2;
  75         qxl->guest_primary.bits_pp = 16;
  76         break;
  77     case SPICE_SURFACE_FMT_32_xRGB:
  78     case SPICE_SURFACE_FMT_32_ARGB:
  79         qxl->guest_primary.bytes_pp = 4;
  80         qxl->guest_primary.bits_pp = 32;
  81         break;
  82     default:
  83         fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
  84                 qxl->guest_primary.surface.format);
  85         qxl->guest_primary.bytes_pp = 4;
  86         qxl->guest_primary.bits_pp = 32;
  87         break;
  88     }
  89 }
  90
  91 static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area)
  92 {
  93     area->left   = 0;
  94     area->right  = qxl->guest_primary.surface.width;
  95     area->top    = 0;
  96     area->bottom = qxl->guest_primary.surface.height;
  97 }
  98
  99 static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
 100 {
 101     VGACommonState *vga = &qxl->vga;
 102     int i;
 103     DisplaySurface *surface = vga->ds->surface;
 104
 105     if (qxl->guest_primary.resized) {
 106         qxl->guest_primary.resized = 0;
 107         qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
 108         qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
 109         qxl->num_dirty_rects = 1;
 110         dprint(qxl, 1, "%s: %dx%d, stride %d, bpp %d, depth %d\n",
 111                __FUNCTION__,
 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     }
 118     if (surface->width != qxl->guest_primary.surface.width ||
 119         surface->height != qxl->guest_primary.surface.height) {
 120         if (qxl->guest_primary.qxl_stride > 0) {
 121             dprint(qxl, 1, "%s: using guest_primary for displaysurface\n",
 122                    __func__);
 123             qemu_free_displaysurface(vga->ds);
 124             qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
 125                                             qxl->guest_primary.surface.height,
 126                                             qxl->guest_primary.bits_pp,
 127                                             qxl->guest_primary.abs_stride,
 128                                             qxl->guest_primary.data);
 129         } else {
 130             dprint(qxl, 1, "%s: resizing displaysurface to guest_primary\n",
 131                    __func__);
 132             qemu_resize_displaysurface(vga->ds,
 133                     qxl->guest_primary.surface.width,
 134                     qxl->guest_primary.surface.height);
 135         }
 136     }
 137     for (i = 0; i < qxl->num_dirty_rects; i++) {
 138         if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
 139             break;
 140         }
 141         qxl_blit(qxl, qxl->dirty+i);
 142         dpy_update(vga->ds,
 143                    qxl->dirty[i].left, qxl->dirty[i].top,
 144                    qxl->dirty[i].right - qxl->dirty[i].left,
 145                    qxl->dirty[i].bottom - qxl->dirty[i].top);
 146     }
 147     qxl->num_dirty_rects = 0;
 148 }
 149
 150 /*
 151  * use ssd.lock to protect render_update_cookie_num.
 152  * qxl_render_update is called by io thread or vcpu thread, and the completion
 153  * callbacks are called by spice_server thread, defering to bh called from the
 154  * io thread.
 155  */
 156 void qxl_render_update(PCIQXLDevice *qxl)
 157 {
 158     QXLCookie *cookie;
 159
 160     qemu_mutex_lock(&qxl->ssd.lock);
 161
 162     if (!runstate_is_running() || !qxl->guest_primary.commands) {
 163         qxl_render_update_area_unlocked(qxl);
 164         qemu_mutex_unlock(&qxl->ssd.lock);
 165         return;
 166     }
 167
 168     qxl->guest_primary.commands = 0;
 169     qxl->render_update_cookie_num++;
 170     qemu_mutex_unlock(&qxl->ssd.lock);
 171     cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
 172                             0);
 173     qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
 174     qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
 175                           0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
 176 }
 177
 178 void qxl_render_update_area_bh(void *opaque)
 179 {
 180     PCIQXLDevice *qxl = opaque;
 181
 182     qemu_mutex_lock(&qxl->ssd.lock);
 183     qxl_render_update_area_unlocked(qxl);
 184     qemu_mutex_unlock(&qxl->ssd.lock);
 185 }
 186
 187 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
 188 {
 189     qemu_mutex_lock(&qxl->ssd.lock);
 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 = cursor->header.width * cursor->header.height * sizeof(uint32_t);
 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 void 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 (!qxl->ssd.ds->mouse_set || !qxl->ssd.ds->cursor_define) {
 242         return;
 243     }
 244
 245     if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
 246         fprintf(stderr, "%s", __FUNCTION__);
 247         qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
 248         fprintf(stderr, "\n");
 249     }
 250     switch (cmd->type) {
 251     case QXL_CURSOR_SET:
 252         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
 253         if (cursor->chunk.data_size != cursor->data_size) {
 254             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
 255             return;
 256         }
 257         c = qxl_cursor(qxl, cursor);
 258         if (c == NULL) {
 259             c = cursor_builtin_left_ptr();
 260         }
 261         qemu_mutex_lock(&qxl->ssd.lock);
 262         if (qxl->ssd.cursor) {
 263             cursor_put(qxl->ssd.cursor);
 264         }
 265         qxl->ssd.cursor = c;
 266         qxl->ssd.mouse_x = cmd->u.set.position.x;
 267         qxl->ssd.mouse_y = cmd->u.set.position.y;
 268         qemu_mutex_unlock(&qxl->ssd.lock);
 269         break;
 270     case QXL_CURSOR_MOVE:
 271         qemu_mutex_lock(&qxl->ssd.lock);
 272         qxl->ssd.mouse_x = cmd->u.position.x;
 273         qxl->ssd.mouse_y = cmd->u.position.y;
 274         qemu_mutex_unlock(&qxl->ssd.lock);
 275         break;
 276     }
 277 }