summaryrefslogtreecommitdiff
path: root/ui/spice-display.c
blob: 020b423bd6bcce8961a8c5c427ee420690f8cb6e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
/*
 * Copyright (C) 2010 Red Hat, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 or
 * (at your option) version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include <pthread.h>

#include "qemu-common.h"
#include "qemu-spice.h"
#include "qemu-timer.h"
#include "qemu-queue.h"
#include "monitor.h"
#include "console.h"
#include "sysemu.h"

#include "spice-display.h"

static int debug = 0;

static void GCC_FMT_ATTR(2, 3) dprint(int level, const char *fmt, ...)
{
    va_list args;

    if (level <= debug) {
        va_start(args, fmt);
        vfprintf(stderr, fmt, args);
        va_end(args);
    }
}

int qemu_spice_rect_is_empty(const QXLRect* r)
{
    return r->top == r->bottom || r->left == r->right;
}

void qemu_spice_rect_union(QXLRect *dest, const QXLRect *r)
{
    if (qemu_spice_rect_is_empty(r)) {
        return;
    }

    if (qemu_spice_rect_is_empty(dest)) {
        *dest = *r;
        return;
    }

    dest->top = MIN(dest->top, r->top);
    dest->left = MIN(dest->left, r->left);
    dest->bottom = MAX(dest->bottom, r->bottom);
    dest->right = MAX(dest->right, r->right);
}

/*
 * Called from spice server thread context (via interface_get_command).
 *
 * We must aquire the global qemu mutex here to make sure the
 * DisplayState (+DisplaySurface) we are accessing doesn't change
 * underneath us.
 */
SimpleSpiceUpdate *qemu_spice_create_update(SimpleSpiceDisplay *ssd)
{
    SimpleSpiceUpdate *update;
    QXLDrawable *drawable;
    QXLImage *image;
    QXLCommand *cmd;
    uint8_t *src, *dst;
    int by, bw, bh;

    qemu_mutex_lock_iothread();
    if (qemu_spice_rect_is_empty(&ssd->dirty)) {
        qemu_mutex_unlock_iothread();
        return NULL;
    };

    dprint(2, "%s: lr %d -> %d,  tb -> %d -> %d\n", __FUNCTION__,
           ssd->dirty.left, ssd->dirty.right,
           ssd->dirty.top, ssd->dirty.bottom);

    update   = qemu_mallocz(sizeof(*update));
    drawable = &update->drawable;
    image    = &update->image;
    cmd      = &update->ext.cmd;

    bw       = ssd->dirty.right - ssd->dirty.left;
    bh       = ssd->dirty.bottom - ssd->dirty.top;
    update->bitmap = qemu_malloc(bw * bh * 4);

    drawable->bbox            = ssd->dirty;
    drawable->clip.type       = SPICE_CLIP_TYPE_NONE;
    drawable->effect          = QXL_EFFECT_OPAQUE;
    drawable->release_info.id = (intptr_t)update;
    drawable->type            = QXL_DRAW_COPY;
    drawable->surfaces_dest[0] = -1;
    drawable->surfaces_dest[1] = -1;
    drawable->surfaces_dest[2] = -1;

    drawable->u.copy.rop_descriptor  = SPICE_ROPD_OP_PUT;
    drawable->u.copy.src_bitmap      = (intptr_t)image;
    drawable->u.copy.src_area.right  = bw;
    drawable->u.copy.src_area.bottom = bh;

    QXL_SET_IMAGE_ID(image, QXL_IMAGE_GROUP_DEVICE, ssd->unique++);
    image->descriptor.type   = SPICE_IMAGE_TYPE_BITMAP;
    image->bitmap.flags      = QXL_BITMAP_DIRECT | QXL_BITMAP_TOP_DOWN;
    image->bitmap.stride     = bw * 4;
    image->descriptor.width  = image->bitmap.x = bw;
    image->descriptor.height = image->bitmap.y = bh;
    image->bitmap.data = (intptr_t)(update->bitmap);
    image->bitmap.palette = 0;
    image->bitmap.format = SPICE_BITMAP_FMT_32BIT;

    if (ssd->conv == NULL) {
        PixelFormat dst = qemu_default_pixelformat(32);
        ssd->conv = qemu_pf_conv_get(&dst, &ssd->ds->surface->pf);
        assert(ssd->conv);
    }

    src = ds_get_data(ssd->ds) +
        ssd->dirty.top * ds_get_linesize(ssd->ds) +
        ssd->dirty.left * ds_get_bytes_per_pixel(ssd->ds);
    dst = update->bitmap;
    for (by = 0; by < bh; by++) {
        qemu_pf_conv_run(ssd->conv, dst, src, bw);
        src += ds_get_linesize(ssd->ds);
        dst += image->bitmap.stride;
    }

    cmd->type = QXL_CMD_DRAW;
    cmd->data = (intptr_t)drawable;

    memset(&ssd->dirty, 0, sizeof(ssd->dirty));
    qemu_mutex_unlock_iothread();
    return update;
}

/*
 * Called from spice server thread context (via interface_release_ressource)
 * We do *not* hold the global qemu mutex here, so extra care is needed
 * when calling qemu functions.  Qemu interfaces used:
 *    - qemu_free (underlying glibc free is re-entrant).
 */
void qemu_spice_destroy_update(SimpleSpiceDisplay *sdpy, SimpleSpiceUpdate *update)
{
    qemu_free(update->bitmap);
    qemu_free(update);
}

void qemu_spice_create_host_memslot(SimpleSpiceDisplay *ssd)
{
    QXLDevMemSlot memslot;

    dprint(1, "%s:\n", __FUNCTION__);

    memset(&memslot, 0, sizeof(memslot));
    memslot.slot_group_id = MEMSLOT_GROUP_HOST;
    memslot.virt_end = ~0;
    ssd->worker->add_memslot(ssd->worker, &memslot);
}

void qemu_spice_create_host_primary(SimpleSpiceDisplay *ssd)
{
    QXLDevSurfaceCreate surface;

    dprint(1, "%s: %dx%d\n", __FUNCTION__,
           ds_get_width(ssd->ds), ds_get_height(ssd->ds));

    surface.format     = SPICE_SURFACE_FMT_32_xRGB;
    surface.width      = ds_get_width(ssd->ds);
    surface.height     = ds_get_height(ssd->ds);
    surface.stride     = -surface.width * 4;
    surface.mouse_mode = true;
    surface.flags      = 0;
    surface.type       = 0;
    surface.mem        = (intptr_t)ssd->buf;
    surface.group_id   = MEMSLOT_GROUP_HOST;

    qemu_mutex_unlock_iothread();
    ssd->worker->create_primary_surface(ssd->worker, 0, &surface);
    qemu_mutex_lock_iothread();
}

void qemu_spice_destroy_host_primary(SimpleSpiceDisplay *ssd)
{
    dprint(1, "%s:\n", __FUNCTION__);

    qemu_mutex_unlock_iothread();
    ssd->worker->destroy_primary_surface(ssd->worker, 0);
    qemu_mutex_lock_iothread();
}

void qemu_spice_vm_change_state_handler(void *opaque, int running, int reason)
{
    SimpleSpiceDisplay *ssd = opaque;

    if (running) {
        ssd->worker->start(ssd->worker);
    } else {
        qemu_mutex_unlock_iothread();
        ssd->worker->stop(ssd->worker);
        qemu_mutex_lock_iothread();
    }
    ssd->running = running;
}

/* display listener callbacks */

void qemu_spice_display_update(SimpleSpiceDisplay *ssd,
                               int x, int y, int w, int h)
{
    QXLRect update_area;

    dprint(2, "%s: x %d y %d w %d h %d\n", __FUNCTION__, x, y, w, h);
    update_area.left = x,
    update_area.right = x + w;
    update_area.top = y;
    update_area.bottom = y + h;

    if (qemu_spice_rect_is_empty(&ssd->dirty)) {
        ssd->notify++;
    }
    qemu_spice_rect_union(&ssd->dirty, &update_area);
}

void qemu_spice_display_resize(SimpleSpiceDisplay *ssd)
{
    dprint(1, "%s:\n", __FUNCTION__);

    memset(&ssd->dirty, 0, sizeof(ssd->dirty));
    qemu_pf_conv_put(ssd->conv);
    ssd->conv = NULL;

    qemu_spice_destroy_host_primary(ssd);
    qemu_spice_create_host_primary(ssd);

    memset(&ssd->dirty, 0, sizeof(ssd->dirty));
    ssd->notify++;
}

void qemu_spice_display_refresh(SimpleSpiceDisplay *ssd)
{
    dprint(3, "%s:\n", __FUNCTION__);
    vga_hw_update();
    if (ssd->notify) {
        ssd->notify = 0;
        ssd->worker->wakeup(ssd->worker);
        dprint(2, "%s: notify\n", __FUNCTION__);
    }
}

/* spice display interface callbacks */

static void interface_attach_worker(QXLInstance *sin, QXLWorker *qxl_worker)
{
    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);

    dprint(1, "%s:\n", __FUNCTION__);
    ssd->worker = qxl_worker;
}

static void interface_set_compression_level(QXLInstance *sin, int level)
{
    dprint(1, "%s:\n", __FUNCTION__);
    /* nothing to do */
}

static void interface_set_mm_time(QXLInstance *sin, uint32_t mm_time)
{
    dprint(3, "%s:\n", __FUNCTION__);
    /* nothing to do */
}

static void interface_get_init_info(QXLInstance *sin, QXLDevInitInfo *info)
{
    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);

    info->memslot_gen_bits = MEMSLOT_GENERATION_BITS;
    info->memslot_id_bits  = MEMSLOT_SLOT_BITS;
    info->num_memslots = NUM_MEMSLOTS;
    info->num_memslots_groups = NUM_MEMSLOTS_GROUPS;
    info->internal_groupslot_id = 0;
    info->qxl_ram_size = ssd->bufsize;
    info->n_surfaces = NUM_SURFACES;
}

static int interface_get_command(QXLInstance *sin, struct QXLCommandExt *ext)
{
    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
    SimpleSpiceUpdate *update;

    dprint(3, "%s:\n", __FUNCTION__);
    update = qemu_spice_create_update(ssd);
    if (update == NULL) {
        return false;
    }
    *ext = update->ext;
    return true;
}

static int interface_req_cmd_notification(QXLInstance *sin)
{
    dprint(1, "%s:\n", __FUNCTION__);
    return 1;
}

static void interface_release_resource(QXLInstance *sin,
                                       struct QXLReleaseInfoExt ext)
{
    SimpleSpiceDisplay *ssd = container_of(sin, SimpleSpiceDisplay, qxl);
    uintptr_t id;

    dprint(2, "%s:\n", __FUNCTION__);
    id = ext.info->id;
    qemu_spice_destroy_update(ssd, (void*)id);
}

static int interface_get_cursor_command(QXLInstance *sin, struct QXLCommandExt *ext)
{
    dprint(3, "%s:\n", __FUNCTION__);
    return false;
}

static int interface_req_cursor_notification(QXLInstance *sin)
{
    dprint(1, "%s:\n", __FUNCTION__);
    return 1;
}

static void interface_notify_update(QXLInstance *sin, uint32_t update_id)
{
    fprintf(stderr, "%s: abort()\n", __FUNCTION__);
    abort();
}

static int interface_flush_resources(QXLInstance *sin)
{
    fprintf(stderr, "%s: abort()\n", __FUNCTION__);
    abort();
    return 0;
}

static const QXLInterface dpy_interface = {
    .base.type               = SPICE_INTERFACE_QXL,
    .base.description        = "qemu simple display",
    .base.major_version      = SPICE_INTERFACE_QXL_MAJOR,
    .base.minor_version      = SPICE_INTERFACE_QXL_MINOR,

    .attache_worker          = interface_attach_worker,
    .set_compression_level   = interface_set_compression_level,
    .set_mm_time             = interface_set_mm_time,
    .get_init_info           = interface_get_init_info,

    /* the callbacks below are called from spice server thread context */
    .get_command             = interface_get_command,
    .req_cmd_notification    = interface_req_cmd_notification,
    .release_resource        = interface_release_resource,
    .get_cursor_command      = interface_get_cursor_command,
    .req_cursor_notification = interface_req_cursor_notification,
    .notify_update           = interface_notify_update,
    .flush_resources         = interface_flush_resources,
};

static SimpleSpiceDisplay sdpy;

static void display_update(struct DisplayState *ds, int x, int y, int w, int h)
{
    qemu_spice_display_update(&sdpy, x, y, w, h);
}

static void display_resize(struct DisplayState *ds)
{
    qemu_spice_display_resize(&sdpy);
}

static void display_refresh(struct DisplayState *ds)
{
    qemu_spice_display_refresh(&sdpy);
}

static DisplayChangeListener display_listener = {
    .dpy_update  = display_update,
    .dpy_resize  = display_resize,
    .dpy_refresh = display_refresh,
};

void qemu_spice_display_init(DisplayState *ds)
{
    assert(sdpy.ds == NULL);
    sdpy.ds = ds;
    sdpy.bufsize = (16 * 1024 * 1024);
    sdpy.buf = qemu_malloc(sdpy.bufsize);
    register_displaychangelistener(ds, &display_listener);

    sdpy.qxl.base.sif = &dpy_interface.base;
    qemu_spice_add_interface(&sdpy.qxl.base);
    assert(sdpy.worker);

    qemu_add_vm_change_state_handler(qemu_spice_vm_change_state_handler, &sdpy);
    qemu_spice_create_host_memslot(&sdpy);
    qemu_spice_create_host_primary(&sdpy);
}