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