[qemu.git] / hw / display / qxl-render.c

/*
 * qxl local rendering (aka display on sdl/vnc)
 *
 * Copyright (C) 2010 Red Hat, Inc.
 *
 * maintained by Gerd Hoffmann <kraxel@redhat.com>
 *
 * 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 "qxl.h"

static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
{
    DisplaySurface *surface = qemu_console_surface(qxl->vga.con);
    uint8_t *dst = surface_data(surface);
    uint8_t *src;
    int len, i;

    if (is_buffer_shared(surface)) {
        return;
    }
    trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
            rect->left, rect->right, rect->top, rect->bottom);
    src = qxl->guest_primary.data;
    if (qxl->guest_primary.qxl_stride < 0) {
        /* qxl surface is upside down, walk src scanlines
         * in reverse order to flip it */
        src += (qxl->guest_primary.surface.height - rect->top - 1) *
            qxl->guest_primary.abs_stride;
    } else {
        src += rect->top * qxl->guest_primary.abs_stride;
    }
    dst += rect->top  * qxl->guest_primary.abs_stride;
    src += rect->left * qxl->guest_primary.bytes_pp;
    dst += rect->left * qxl->guest_primary.bytes_pp;
    len  = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;

    for (i = rect->top; i < rect->bottom; i++) {
        memcpy(dst, src, len);
        dst += qxl->guest_primary.abs_stride;
        src += qxl->guest_primary.qxl_stride;
    }
}

void qxl_render_resize(PCIQXLDevice *qxl)
{
    QXLSurfaceCreate *sc = &qxl->guest_primary.surface;

    qxl->guest_primary.qxl_stride = sc->stride;
    qxl->guest_primary.abs_stride = abs(sc->stride);
    qxl->guest_primary.resized++;
    switch (sc->format) {
    case SPICE_SURFACE_FMT_16_555:
        qxl->guest_primary.bytes_pp = 2;
        qxl->guest_primary.bits_pp = 15;
        break;
    case SPICE_SURFACE_FMT_16_565:
        qxl->guest_primary.bytes_pp = 2;
        qxl->guest_primary.bits_pp = 16;
        break;
    case SPICE_SURFACE_FMT_32_xRGB:
    case SPICE_SURFACE_FMT_32_ARGB:
        qxl->guest_primary.bytes_pp = 4;
        qxl->guest_primary.bits_pp = 32;
        break;
    default:
        fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
                qxl->guest_primary.surface.format);
        qxl->guest_primary.bytes_pp = 4;
        qxl->guest_primary.bits_pp = 32;
        break;
    }
}

static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area)
{
    area->left   = 0;
    area->right  = qxl->guest_primary.surface.width;
    area->top    = 0;
    area->bottom = qxl->guest_primary.surface.height;
}

static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
{
    VGACommonState *vga = &qxl->vga;
    DisplaySurface *surface;
    int i;

    if (qxl->guest_primary.resized) {
        qxl->guest_primary.resized = 0;
        qxl->guest_primary.data = qxl_phys2virt(qxl,
                                                qxl->guest_primary.surface.mem,
                                                MEMSLOT_GROUP_GUEST);
        if (!qxl->guest_primary.data) {
            return;
        }
        qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
        qxl->num_dirty_rects = 1;
        trace_qxl_render_guest_primary_resized(
               qxl->guest_primary.surface.width,
               qxl->guest_primary.surface.height,
               qxl->guest_primary.qxl_stride,
               qxl->guest_primary.bytes_pp,
               qxl->guest_primary.bits_pp);
        if (qxl->guest_primary.qxl_stride > 0) {
            surface = qemu_create_displaysurface_from
                (qxl->guest_primary.surface.width,
                 qxl->guest_primary.surface.height,
                 qxl->guest_primary.bits_pp,
                 qxl->guest_primary.abs_stride,
                 qxl->guest_primary.data,
                 false);
        } else {
            surface = qemu_create_displaysurface
                (qxl->guest_primary.surface.width,
                 qxl->guest_primary.surface.height);
        }
        dpy_gfx_replace_surface(vga->con, surface);
    }

    if (!qxl->guest_primary.data) {
        return;
    }
    for (i = 0; i < qxl->num_dirty_rects; i++) {
        if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
            break;
        }
        qxl_blit(qxl, qxl->dirty+i);
        dpy_gfx_update(vga->con,
                       qxl->dirty[i].left, qxl->dirty[i].top,
                       qxl->dirty[i].right - qxl->dirty[i].left,
                       qxl->dirty[i].bottom - qxl->dirty[i].top);
    }
    qxl->num_dirty_rects = 0;
}

/*
 * use ssd.lock to protect render_update_cookie_num.
 * qxl_render_update is called by io thread or vcpu thread, and the completion
 * callbacks are called by spice_server thread, defering to bh called from the
 * io thread.
 */
void qxl_render_update(PCIQXLDevice *qxl)
{
    QXLCookie *cookie;

    qemu_mutex_lock(&qxl->ssd.lock);

    if (!runstate_is_running() || !qxl->guest_primary.commands) {
        qxl_render_update_area_unlocked(qxl);
        qemu_mutex_unlock(&qxl->ssd.lock);
        return;
    }

    qxl->guest_primary.commands = 0;
    qxl->render_update_cookie_num++;
    qemu_mutex_unlock(&qxl->ssd.lock);
    cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
                            0);
    qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
    qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
                          0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
}

void qxl_render_update_area_bh(void *opaque)
{
    PCIQXLDevice *qxl = opaque;

    qemu_mutex_lock(&qxl->ssd.lock);
    qxl_render_update_area_unlocked(qxl);
    qemu_mutex_unlock(&qxl->ssd.lock);
}

void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
{
    qemu_mutex_lock(&qxl->ssd.lock);
    trace_qxl_render_update_area_done(cookie);
    qemu_bh_schedule(qxl->update_area_bh);
    qxl->render_update_cookie_num--;
    qemu_mutex_unlock(&qxl->ssd.lock);
    g_free(cookie);
}

static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
{
    QEMUCursor *c;
    uint8_t *image, *mask;
    size_t size;

    c = cursor_alloc(cursor->header.width, cursor->header.height);
    c->hot_x = cursor->header.hot_spot_x;
    c->hot_y = cursor->header.hot_spot_y;
    switch (cursor->header.type) {
    case SPICE_CURSOR_TYPE_ALPHA:
        size = sizeof(uint32_t) * cursor->header.width * cursor->header.height;
        memcpy(c->data, cursor->chunk.data, size);
        if (qxl->debug > 2) {
            cursor_print_ascii_art(c, "qxl/alpha");
        }
        break;
    case SPICE_CURSOR_TYPE_MONO:
        mask  = cursor->chunk.data;
        image = mask + cursor_get_mono_bpl(c) * c->width;
        cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
        if (qxl->debug > 2) {
            cursor_print_ascii_art(c, "qxl/mono");
        }
        break;
    default:
        fprintf(stderr, "%s: not implemented: type %d\n",
                __FUNCTION__, cursor->header.type);
        goto fail;
    }
    return c;

fail:
    cursor_put(c);
    return NULL;
}


/* called from spice server thread context only */
int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
{
    QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
    QXLCursor *cursor;
    QEMUCursor *c;

    if (!cmd) {
        return 1;
    }

    if (!dpy_cursor_define_supported(qxl->vga.con)) {
        return 0;
    }

    if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
        fprintf(stderr, "%s", __FUNCTION__);
        qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
        fprintf(stderr, "\n");
    }
    switch (cmd->type) {
    case QXL_CURSOR_SET:
        cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
        if (!cursor) {
            return 1;
        }
        if (cursor->chunk.data_size != cursor->data_size) {
            fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
            return 1;
        }
        c = qxl_cursor(qxl, cursor);
        if (c == NULL) {
            c = cursor_builtin_left_ptr();
        }
        qemu_mutex_lock(&qxl->ssd.lock);
        if (qxl->ssd.cursor) {
            cursor_put(qxl->ssd.cursor);
        }
        qxl->ssd.cursor = c;
        qxl->ssd.mouse_x = cmd->u.set.position.x;
        qxl->ssd.mouse_y = cmd->u.set.position.y;
        qemu_mutex_unlock(&qxl->ssd.lock);
        break;
    case QXL_CURSOR_MOVE:
        qemu_mutex_lock(&qxl->ssd.lock);
        qxl->ssd.mouse_x = cmd->u.position.x;
        qxl->ssd.mouse_y = cmd->u.position.y;
        qemu_mutex_unlock(&qxl->ssd.lock);
        break;
    }
    return 0;
}
Commit	Line	Data
a19cbfb3 GH	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
47b43a1f	22	#include "qxl.h"
a19cbfb3	23
e2efc0a3	24	static void qxl_blit(PCIQXLDevice qxl, QXLRect rect)
a19cbfb3	25	{
c78f7137 GH	26	DisplaySurface *surface = qemu_console_surface(qxl->vga.con);
c78f7137 GH	27	uint8_t *dst = surface_data(surface);
4c19ebb5	28	uint8_t *src;
a19cbfb3 GH	29	int len, i;
a19cbfb3 GH	30
c78f7137	31	if (is_buffer_shared(surface)) {
4c19ebb5 AL	32	return;
4c19ebb5 AL	33	}
d53291cf	34	trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
4c19ebb5 AL	35	rect->left, rect->right, rect->top, rect->bottom);
4c19ebb5 AL	36	src = qxl->guest_primary.data;
e2efc0a3 GH	37	if (qxl->guest_primary.qxl_stride < 0) {
	38	/* qxl surface is upside down, walk src scanlines
	39	* in reverse order to flip it */
	40	src += (qxl->guest_primary.surface.height - rect->top - 1) *
	41	qxl->guest_primary.abs_stride;
	42	} else {
	43	src += rect->top * qxl->guest_primary.abs_stride;
	44	}
0e2487bd	45	dst += rect->top * qxl->guest_primary.abs_stride;
a19cbfb3 GH	46	src += rect->left * qxl->guest_primary.bytes_pp;
	47	dst += rect->left * qxl->guest_primary.bytes_pp;
	48	len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
	49
	50	for (i = rect->top; i < rect->bottom; i++) {
	51	memcpy(dst, src, len);
0e2487bd	52	dst += qxl->guest_primary.abs_stride;
e2efc0a3	53	src += qxl->guest_primary.qxl_stride;
a19cbfb3 GH	54	}
	55	}
	56
	57	void qxl_render_resize(PCIQXLDevice *qxl)
	58	{
	59	QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
	60
0e2487bd GH	61	qxl->guest_primary.qxl_stride = sc->stride;
0e2487bd GH	62	qxl->guest_primary.abs_stride = abs(sc->stride);
a19cbfb3 GH	63	qxl->guest_primary.resized++;
	64	switch (sc->format) {
	65	case SPICE_SURFACE_FMT_16_555:
	66	qxl->guest_primary.bytes_pp = 2;
	67	qxl->guest_primary.bits_pp = 15;
	68	break;
	69	case SPICE_SURFACE_FMT_16_565:
	70	qxl->guest_primary.bytes_pp = 2;
	71	qxl->guest_primary.bits_pp = 16;
	72	break;
	73	case SPICE_SURFACE_FMT_32_xRGB:
	74	case SPICE_SURFACE_FMT_32_ARGB:
	75	qxl->guest_primary.bytes_pp = 4;
	76	qxl->guest_primary.bits_pp = 32;
	77	break;
	78	default:
	79	fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
	80	qxl->guest_primary.surface.format);
	81	qxl->guest_primary.bytes_pp = 4;
	82	qxl->guest_primary.bits_pp = 32;
	83	break;
	84	}
	85	}
	86
81fb6f15 AL	87	static void qxl_set_rect_to_surface(PCIQXLDevice qxl, QXLRect area)
	88	{
	89	area->left = 0;
	90	area->right = qxl->guest_primary.surface.width;
	91	area->top = 0;
	92	area->bottom = qxl->guest_primary.surface.height;
	93	}
	94
	95	static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
a19cbfb3 GH	96	{
a19cbfb3 GH	97	VGACommonState *vga = &qxl->vga;
da229ef3	98	DisplaySurface *surface;
81fb6f15	99	int i;
a19cbfb3 GH	100
	101	if (qxl->guest_primary.resized) {
	102	qxl->guest_primary.resized = 0;
c58c7b95 GH	103	qxl->guest_primary.data = qxl_phys2virt(qxl,
	104	qxl->guest_primary.surface.mem,
	105	MEMSLOT_GROUP_GUEST);
	106	if (!qxl->guest_primary.data) {
	107	return;
	108	}
81fb6f15 AL	109	qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
81fb6f15 AL	110	qxl->num_dirty_rects = 1;
d53291cf	111	trace_qxl_render_guest_primary_resized(
a19cbfb3 GH	112	qxl->guest_primary.surface.width,
a19cbfb3 GH	113	qxl->guest_primary.surface.height,
0e2487bd	114	qxl->guest_primary.qxl_stride,
a19cbfb3	115	qxl->guest_primary.bytes_pp,
4c19ebb5	116	qxl->guest_primary.bits_pp);
4c19ebb5	117	if (qxl->guest_primary.qxl_stride > 0) {
da229ef3	118	surface = qemu_create_displaysurface_from
2f464b5a GH	119	(qxl->guest_primary.surface.width,
	120	qxl->guest_primary.surface.height,
	121	qxl->guest_primary.bits_pp,
	122	qxl->guest_primary.abs_stride,
b1424e03 GH	123	qxl->guest_primary.data,
b1424e03 GH	124	false);
4c19ebb5	125	} else {
da229ef3 GH	126	surface = qemu_create_displaysurface
	127	(qxl->guest_primary.surface.width,
	128	qxl->guest_primary.surface.height);
4c19ebb5	129	}
c78f7137	130	dpy_gfx_replace_surface(vga->con, surface);
a19cbfb3	131	}
c58c7b95 GH	132
	133	if (!qxl->guest_primary.data) {
	134	return;
	135	}
81fb6f15 AL	136	for (i = 0; i < qxl->num_dirty_rects; i++) {
81fb6f15 AL	137	if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
a19cbfb3 GH	138	break;
a19cbfb3 GH	139	}
e2efc0a3	140	qxl_blit(qxl, qxl->dirty+i);
c78f7137	141	dpy_gfx_update(vga->con,
a93a4a22 GH	142	qxl->dirty[i].left, qxl->dirty[i].top,
	143	qxl->dirty[i].right - qxl->dirty[i].left,
	144	qxl->dirty[i].bottom - qxl->dirty[i].top);
a19cbfb3	145	}
81fb6f15 AL	146	qxl->num_dirty_rects = 0;
	147	}
	148
	149	/*
	150	* use ssd.lock to protect render_update_cookie_num.
	151	* qxl_render_update is called by io thread or vcpu thread, and the completion
	152	* callbacks are called by spice_server thread, defering to bh called from the
	153	* io thread.
	154	*/
	155	void qxl_render_update(PCIQXLDevice *qxl)
	156	{
	157	QXLCookie *cookie;
	158
	159	qemu_mutex_lock(&qxl->ssd.lock);
	160
	161	if (!runstate_is_running() \|\| !qxl->guest_primary.commands) {
	162	qxl_render_update_area_unlocked(qxl);
	163	qemu_mutex_unlock(&qxl->ssd.lock);
	164	return;
	165	}
	166
	167	qxl->guest_primary.commands = 0;
	168	qxl->render_update_cookie_num++;
	169	qemu_mutex_unlock(&qxl->ssd.lock);
	170	cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
	171	0);
	172	qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
	173	qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
	174	0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
	175	}
	176
	177	void qxl_render_update_area_bh(void *opaque)
	178	{
	179	PCIQXLDevice *qxl = opaque;
	180
	181	qemu_mutex_lock(&qxl->ssd.lock);
	182	qxl_render_update_area_unlocked(qxl);
	183	qemu_mutex_unlock(&qxl->ssd.lock);
	184	}
	185
	186	void qxl_render_update_area_done(PCIQXLDevice qxl, QXLCookie cookie)
	187	{
	188	qemu_mutex_lock(&qxl->ssd.lock);
d53291cf	189	trace_qxl_render_update_area_done(cookie);
81fb6f15 AL	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);
a19cbfb3 GH	194	}
	195
	196	static QEMUCursor qxl_cursor(PCIQXLDevice qxl, QXLCursor *cursor)
	197	{
	198	QEMUCursor *c;
	199	uint8_t image, mask;
66d3f196	200	size_t size;
a19cbfb3 GH	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:
bfc10122	207	size = sizeof(uint32_t) * cursor->header.width * cursor->header.height;
a19cbfb3 GH	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 */
fae2afb1	235	int qxl_render_cursor(PCIQXLDevice qxl, QXLCommandExt ext)
a19cbfb3 GH	236	{
	237	QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
	238	QXLCursor *cursor;
	239	QEMUCursor *c;
a19cbfb3	240
fae2afb1 AL	241	if (!cmd) {
	242	return 1;
	243	}
	244
c78f7137	245	if (!dpy_cursor_define_supported(qxl->vga.con)) {
fae2afb1	246	return 0;
a19cbfb3 GH	247	}
	248
	249	if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
	250	fprintf(stderr, "%s", __FUNCTION__);
	251	qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
	252	fprintf(stderr, "\n");
	253	}
	254	switch (cmd->type) {
	255	case QXL_CURSOR_SET:
a19cbfb3	256	cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
fae2afb1 AL	257	if (!cursor) {
	258	return 1;
	259	}
a19cbfb3 GH	260	if (cursor->chunk.data_size != cursor->data_size) {
a19cbfb3 GH	261	fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
fae2afb1	262	return 1;
a19cbfb3 GH	263	}
	264	c = qxl_cursor(qxl, cursor);
	265	if (c == NULL) {
	266	c = cursor_builtin_left_ptr();
	267	}
07536094 GH	268	qemu_mutex_lock(&qxl->ssd.lock);
	269	if (qxl->ssd.cursor) {
	270	cursor_put(qxl->ssd.cursor);
	271	}
	272	qxl->ssd.cursor = c;
	273	qxl->ssd.mouse_x = cmd->u.set.position.x;
	274	qxl->ssd.mouse_y = cmd->u.set.position.y;
	275	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	276	break;
a19cbfb3 GH	277	case QXL_CURSOR_MOVE:
07536094 GH	278	qemu_mutex_lock(&qxl->ssd.lock);
	279	qxl->ssd.mouse_x = cmd->u.position.x;
	280	qxl->ssd.mouse_y = cmd->u.position.y;
	281	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	282	break;
a19cbfb3 GH	283	}
fae2afb1	284	return 0;
a19cbfb3	285	}