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_flip(PCIQXLDevice *qxl, QXLRect *rect)
  25 {
  26     uint8_t *src = qxl->guest_primary.data;
  27     uint8_t *dst = qxl->guest_primary.flipped;
  28     int len, i;
  29
  30     src += (qxl->guest_primary.surface.height - rect->top - 1) *
  31         qxl->guest_primary.stride;
  32     dst += rect->top  * qxl->guest_primary.stride;
  33     src += rect->left * qxl->guest_primary.bytes_pp;
  34     dst += rect->left * qxl->guest_primary.bytes_pp;
  35     len  = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
  36
  37     for (i = rect->top; i < rect->bottom; i++) {
  38         memcpy(dst, src, len);
  39         dst += qxl->guest_primary.stride;
  40         src -= qxl->guest_primary.stride;
  41     }
  42 }
  43
  44 void qxl_render_resize(PCIQXLDevice *qxl)
  45 {
  46     QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
  47
  48     qxl->guest_primary.stride = sc->stride;
  49     qxl->guest_primary.resized++;
  50     switch (sc->format) {
  51     case SPICE_SURFACE_FMT_16_555:
  52         qxl->guest_primary.bytes_pp = 2;
  53         qxl->guest_primary.bits_pp = 15;
  54         break;
  55     case SPICE_SURFACE_FMT_16_565:
  56         qxl->guest_primary.bytes_pp = 2;
  57         qxl->guest_primary.bits_pp = 16;
  58         break;
  59     case SPICE_SURFACE_FMT_32_xRGB:
  60     case SPICE_SURFACE_FMT_32_ARGB:
  61         qxl->guest_primary.bytes_pp = 4;
  62         qxl->guest_primary.bits_pp = 32;
  63         break;
  64     default:
  65         fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
  66                 qxl->guest_primary.surface.format);
  67         qxl->guest_primary.bytes_pp = 4;
  68         qxl->guest_primary.bits_pp = 32;
  69         break;
  70     }
  71 }
  72
  73 void qxl_render_update(PCIQXLDevice *qxl)
  74 {
  75     VGACommonState *vga = &qxl->vga;
  76     QXLRect dirty[32], update;
  77     void *ptr;
  78     int i;
  79
  80     if (qxl->guest_primary.resized) {
  81         qxl->guest_primary.resized = 0;
  82
  83         if (qxl->guest_primary.flipped) {
  84             qemu_free(qxl->guest_primary.flipped);
  85             qxl->guest_primary.flipped = NULL;
  86         }
  87         qemu_free_displaysurface(vga->ds);
  88
  89         qxl->guest_primary.data = qemu_get_ram_ptr(qxl->vga.vram_offset);
  90         if (qxl->guest_primary.stride < 0) {
  91             /* spice surface is upside down -> need extra buffer to flip */
  92             qxl->guest_primary.stride = -qxl->guest_primary.stride;
  93             qxl->guest_primary.flipped = qemu_malloc(qxl->guest_primary.surface.width *
  94                                                      qxl->guest_primary.stride);
  95             ptr = qxl->guest_primary.flipped;
  96         } else {
  97             ptr = qxl->guest_primary.data;
  98         }
  99         dprint(qxl, 1, "%s: %dx%d, stride %d, bpp %d, depth %d, flip %s\n",
 100                __FUNCTION__,
 101                qxl->guest_primary.surface.width,
 102                qxl->guest_primary.surface.height,
 103                qxl->guest_primary.stride,
 104                qxl->guest_primary.bytes_pp,
 105                qxl->guest_primary.bits_pp,
 106                qxl->guest_primary.flipped ? "yes" : "no");
 107         vga->ds->surface =
 108             qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
 109                                             qxl->guest_primary.surface.height,
 110                                             qxl->guest_primary.bits_pp,
 111                                             qxl->guest_primary.stride,
 112                                             ptr);
 113         dpy_resize(vga->ds);
 114     }
 115
 116     if (!qxl->guest_primary.commands) {
 117         return;
 118     }
 119     qxl->guest_primary.commands = 0;
 120
 121     update.left   = 0;
 122     update.right  = qxl->guest_primary.surface.width;
 123     update.top    = 0;
 124     update.bottom = qxl->guest_primary.surface.height;
 125
 126     memset(dirty, 0, sizeof(dirty));
 127     qxl->ssd.worker->update_area(qxl->ssd.worker, 0, &update,
 128                                  dirty, ARRAY_SIZE(dirty), 1);
 129
 130     for (i = 0; i < ARRAY_SIZE(dirty); i++) {
 131         if (qemu_spice_rect_is_empty(dirty+i)) {
 132             break;
 133         }
 134         if (qxl->guest_primary.flipped) {
 135             qxl_flip(qxl, dirty+i);
 136         }
 137         dpy_update(vga->ds,
 138                    dirty[i].left, dirty[i].top,
 139                    dirty[i].right - dirty[i].left,
 140                    dirty[i].bottom - dirty[i].top);
 141     }
 142 }
 143
 144 static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
 145 {
 146     QEMUCursor *c;
 147     uint8_t *image, *mask;
 148     int size;
 149
 150     c = cursor_alloc(cursor->header.width, cursor->header.height);
 151     c->hot_x = cursor->header.hot_spot_x;
 152     c->hot_y = cursor->header.hot_spot_y;
 153     switch (cursor->header.type) {
 154     case SPICE_CURSOR_TYPE_ALPHA:
 155         size = cursor->header.width * cursor->header.height * sizeof(uint32_t);
 156         memcpy(c->data, cursor->chunk.data, size);
 157         if (qxl->debug > 2) {
 158             cursor_print_ascii_art(c, "qxl/alpha");
 159         }
 160         break;
 161     case SPICE_CURSOR_TYPE_MONO:
 162         mask  = cursor->chunk.data;
 163         image = mask + cursor_get_mono_bpl(c) * c->width;
 164         cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
 165         if (qxl->debug > 2) {
 166             cursor_print_ascii_art(c, "qxl/mono");
 167         }
 168         break;
 169     default:
 170         fprintf(stderr, "%s: not implemented: type %d\n",
 171                 __FUNCTION__, cursor->header.type);
 172         goto fail;
 173     }
 174     return c;
 175
 176 fail:
 177     cursor_put(c);
 178     return NULL;
 179 }
 180
 181
 182 /* called from spice server thread context only */
 183 void qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
 184 {
 185     QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
 186     QXLCursor *cursor;
 187     QEMUCursor *c;
 188     int x = -1, y = -1;
 189
 190     if (!qxl->ssd.ds->mouse_set || !qxl->ssd.ds->cursor_define) {
 191         return;
 192     }
 193
 194     if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
 195         fprintf(stderr, "%s", __FUNCTION__);
 196         qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
 197         fprintf(stderr, "\n");
 198     }
 199     switch (cmd->type) {
 200     case QXL_CURSOR_SET:
 201         x = cmd->u.set.position.x;
 202         y = cmd->u.set.position.y;
 203         cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
 204         if (cursor->chunk.data_size != cursor->data_size) {
 205             fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
 206             return;
 207         }
 208         c = qxl_cursor(qxl, cursor);
 209         if (c == NULL) {
 210             c = cursor_builtin_left_ptr();
 211         }
 212         qemu_mutex_lock_iothread();
 213         qxl->ssd.ds->cursor_define(c);
 214         qxl->ssd.ds->mouse_set(x, y, 1);
 215         qemu_mutex_unlock_iothread();
 216         cursor_put(c);
 217         break;
 218     case QXL_CURSOR_MOVE:
 219         x = cmd->u.position.x;
 220         y = cmd->u.position.y;
 221         qemu_mutex_lock_iothread();
 222         qxl->ssd.ds->mouse_set(x, y, 1);
 223         qemu_mutex_unlock_iothread();
 224         break;
 225     }
 226 }