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 "hw/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     if (!qxl->guest_primary.data) {
  35         trace_qxl_render_blit_guest_primary_initialized();
  36         qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
  37     }
  38     trace_qxl_render_blit(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     DisplaySurface *surface;
 103     int i;
 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         trace_qxl_render_guest_primary_resized(
 111                qxl->guest_primary.surface.width,
 112                qxl->guest_primary.surface.height,
 113                qxl->guest_primary.qxl_stride,
 114                qxl->guest_primary.bytes_pp,
 115                qxl->guest_primary.bits_pp);
 116         if (qxl->guest_primary.qxl_stride > 0) {
 117             surface = qemu_create_displaysurface_from
 118                 (qxl->guest_primary.surface.width,
 119                  qxl->guest_primary.surface.height,
 120                  qxl->guest_primary.bits_pp,
 121                  qxl->guest_primary.abs_stride,
 122                  qxl->guest_primary.data,
 123                  false);
 124         } else {
 125             surface = qemu_create_displaysurface
 126                 (qxl->guest_primary.surface.width,
 127                  qxl->guest_primary.surface.height);
 128         }
 129         dpy_gfx_replace_surface(vga->con, surface);
 130     }
 131     for (i = 0; i < qxl->num_dirty_rects; i++) {
 132         if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
 133             break;
 134         }
 135         qxl_blit(qxl, qxl->dirty+i);
 136         dpy_gfx_update(vga->con,
 137                        qxl->dirty[i].left, qxl->dirty[i].top,
 138                        qxl->dirty[i].right - qxl->dirty[i].left,
 139                        qxl->dirty[i].bottom - qxl->dirty[i].top);
 140     }
 141     qxl->num_dirty_rects = 0;
 142 }
 143
 144 /*
 145  * use ssd.lock to protect render_update_cookie_num.
 146  * qxl_render_update is called by io thread or vcpu thread, and the completion
 147  * callbacks are called by spice_server thread, defering to bh called from the
 148  * io thread.
 149  */
 150 void qxl_render_update(PCIQXLDevice *qxl)
 151 {
 152     QXLCookie *cookie;
 153
 154     qemu_mutex_lock(&qxl->ssd.lock);
 155
 156     if (!runstate_is_running() || !qxl->guest_primary.commands) {
 157         qxl_render_update_area_unlocked(qxl);
 158         qemu_mutex_unlock(&qxl->ssd.lock);
 159         return;
 160     }
 161
 162     qxl->guest_primary.commands = 0;
 163     qxl->render_update_cookie_num++;
 164     qemu_mutex_unlock(&qxl->ssd.lock);
 165     cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
 166                             0);
 167     qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
 168     qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
 169                           0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
 170 }
 171
 172 void qxl_render_update_area_bh(void *opaque)
 173 {
 174     PCIQXLDevice *qxl = opaque;
 175
 176     qemu_mutex_lock(&qxl->ssd.lock);
 177     qxl_render_update_area_unlocked(qxl);
 178     qemu_mutex_unlock(&qxl->ssd.lock);
 179 }
 180
 181 void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
 182 {
 183     qemu_mutex_lock(&qxl->ssd.lock);
 184     trace_qxl_render_update_area_done(cookie);
 185     qemu_bh_schedule(qxl->update_area_bh);
 186     qxl->render_update_cookie_num--;
 187     qemu_mutex_unlock(&qxl->ssd.lock);
 188     g_free(cookie);
 189 }
 190
 191 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
 192 {
 193     QEMUCursor *c;
 194     uint8_t *image, *mask;
 195     size_t size;
 196
 197     c = cursor_alloc(cursor->header.width, cursor->header.height);
 198     c->hot_x = cursor->header.hot_spot_x;
 199     c->hot_y = cursor->header.hot_spot_y;
 200     switch (cursor->header.type) {
 201     case SPICE_CURSOR_TYPE_ALPHA:
 202         size = cursor->header.width * cursor->header.height * sizeof(uint32_t);
 203         memcpy(c->data, cursor->chunk.data, size);
 204         if (qxl->debug > 2) {
 205             cursor_print_ascii_art(c, "qxl/alpha");
 206         }
 207         break;
 208     case SPICE_CURSOR_TYPE_MONO:
 209         mask  = cursor->chunk.data;
 210         image = mask + cursor_get_mono_bpl(c) * c->width;
 211         cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
 212         if (qxl->debug > 2) {
 213             cursor_print_ascii_art(c, "qxl/mono");
 214         }
 215         break;
 216     default:
 217         fprintf(stderr, "%s: not implemented: type %d\n",
 218                 __FUNCTION__, cursor->header.type);
 219         goto fail;
 220     }
 221     return c;
 222
 223 fail:
 224     cursor_put(c);
 225     return NULL;
 226 }
 227
 228
 229 /* called from spice server thread context only */
 230 int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
 231 {
 232     QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
 233     QXLCursor *cursor;
 234     QEMUCursor *c;
 235
 236     if (!cmd) {
 237         return 1;
 238     }
 239
 240     if (!dpy_cursor_define_supported(qxl->vga.con)) {
 241         return 0;
 242     }
 243
 244     if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
 245         fprintf(stderr, "%s", __FUNCTION__);
 246         qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
 247         fprintf(stderr, "\n");
 248     }
 249     switch (cmd->type) {
 250     case QXL_CURSOR_SET:
 251         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
 252         if (!cursor) {
 253             return 1;
 254         }
 255         if (cursor->chunk.data_size != cursor->data_size) {
 256             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
 257             return 1;
 258         }
 259         c = qxl_cursor(qxl, cursor);
 260         if (c == NULL) {
 261             c = cursor_builtin_left_ptr();
 262         }
 263         qemu_mutex_lock(&qxl->ssd.lock);
 264         if (qxl->ssd.cursor) {
 265             cursor_put(qxl->ssd.cursor);
 266         }
 267         qxl->ssd.cursor = c;
 268         qxl->ssd.mouse_x = cmd->u.set.position.x;
 269         qxl->ssd.mouse_y = cmd->u.set.position.y;
 270         qemu_mutex_unlock(&qxl->ssd.lock);
 271         break;
 272     case QXL_CURSOR_MOVE:
 273         qemu_mutex_lock(&qxl->ssd.lock);
 274         qxl->ssd.mouse_x = cmd->u.position.x;
 275         qxl->ssd.mouse_y = cmd->u.position.y;
 276         qemu_mutex_unlock(&qxl->ssd.lock);
 277         break;
 278     }
 279     return 0;
 280 }