[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 <[email protected]>
 *
 * 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"
#include "trace.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 <[email protected]>
	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"
b1829cde	23	#include "trace.h"
a19cbfb3	24
e2efc0a3	25	static void qxl_blit(PCIQXLDevice qxl, QXLRect rect)
a19cbfb3	26	{
c78f7137 GH	27	DisplaySurface *surface = qemu_console_surface(qxl->vga.con);
c78f7137 GH	28	uint8_t *dst = surface_data(surface);
4c19ebb5	29	uint8_t *src;
a19cbfb3 GH	30	int len, i;
a19cbfb3 GH	31
c78f7137	32	if (is_buffer_shared(surface)) {
4c19ebb5 AL	33	return;
4c19ebb5 AL	34	}
d53291cf	35	trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
4c19ebb5 AL	36	rect->left, rect->right, rect->top, rect->bottom);
4c19ebb5 AL	37	src = qxl->guest_primary.data;
e2efc0a3 GH	38	if (qxl->guest_primary.qxl_stride < 0) {
	39	/* qxl surface is upside down, walk src scanlines
	40	* in reverse order to flip it */
	41	src += (qxl->guest_primary.surface.height - rect->top - 1) *
	42	qxl->guest_primary.abs_stride;
	43	} else {
	44	src += rect->top * qxl->guest_primary.abs_stride;
	45	}
0e2487bd	46	dst += rect->top * qxl->guest_primary.abs_stride;
a19cbfb3 GH	47	src += rect->left * qxl->guest_primary.bytes_pp;
	48	dst += rect->left * qxl->guest_primary.bytes_pp;
	49	len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
	50
	51	for (i = rect->top; i < rect->bottom; i++) {
	52	memcpy(dst, src, len);
0e2487bd	53	dst += qxl->guest_primary.abs_stride;
e2efc0a3	54	src += qxl->guest_primary.qxl_stride;
a19cbfb3 GH	55	}
	56	}
	57
	58	void qxl_render_resize(PCIQXLDevice *qxl)
	59	{
	60	QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
	61
0e2487bd GH	62	qxl->guest_primary.qxl_stride = sc->stride;
0e2487bd GH	63	qxl->guest_primary.abs_stride = abs(sc->stride);
a19cbfb3 GH	64	qxl->guest_primary.resized++;
	65	switch (sc->format) {
	66	case SPICE_SURFACE_FMT_16_555:
	67	qxl->guest_primary.bytes_pp = 2;
	68	qxl->guest_primary.bits_pp = 15;
	69	break;
	70	case SPICE_SURFACE_FMT_16_565:
	71	qxl->guest_primary.bytes_pp = 2;
	72	qxl->guest_primary.bits_pp = 16;
	73	break;
	74	case SPICE_SURFACE_FMT_32_xRGB:
	75	case SPICE_SURFACE_FMT_32_ARGB:
	76	qxl->guest_primary.bytes_pp = 4;
	77	qxl->guest_primary.bits_pp = 32;
	78	break;
	79	default:
	80	fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
	81	qxl->guest_primary.surface.format);
	82	qxl->guest_primary.bytes_pp = 4;
	83	qxl->guest_primary.bits_pp = 32;
	84	break;
	85	}
	86	}
	87
81fb6f15 AL	88	static void qxl_set_rect_to_surface(PCIQXLDevice qxl, QXLRect area)
	89	{
	90	area->left = 0;
	91	area->right = qxl->guest_primary.surface.width;
	92	area->top = 0;
	93	area->bottom = qxl->guest_primary.surface.height;
	94	}
	95
	96	static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
a19cbfb3 GH	97	{
a19cbfb3 GH	98	VGACommonState *vga = &qxl->vga;
da229ef3	99	DisplaySurface *surface;
81fb6f15	100	int i;
a19cbfb3 GH	101
	102	if (qxl->guest_primary.resized) {
	103	qxl->guest_primary.resized = 0;
c58c7b95 GH	104	qxl->guest_primary.data = qxl_phys2virt(qxl,
	105	qxl->guest_primary.surface.mem,
	106	MEMSLOT_GROUP_GUEST);
	107	if (!qxl->guest_primary.data) {
	108	return;
	109	}
81fb6f15 AL	110	qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
81fb6f15 AL	111	qxl->num_dirty_rects = 1;
d53291cf	112	trace_qxl_render_guest_primary_resized(
a19cbfb3 GH	113	qxl->guest_primary.surface.width,
a19cbfb3 GH	114	qxl->guest_primary.surface.height,
0e2487bd	115	qxl->guest_primary.qxl_stride,
a19cbfb3	116	qxl->guest_primary.bytes_pp,
4c19ebb5	117	qxl->guest_primary.bits_pp);
4c19ebb5	118	if (qxl->guest_primary.qxl_stride > 0) {
da229ef3	119	surface = qemu_create_displaysurface_from
2f464b5a GH	120	(qxl->guest_primary.surface.width,
	121	qxl->guest_primary.surface.height,
	122	qxl->guest_primary.bits_pp,
	123	qxl->guest_primary.abs_stride,
b1424e03 GH	124	qxl->guest_primary.data,
b1424e03 GH	125	false);
4c19ebb5	126	} else {
da229ef3 GH	127	surface = qemu_create_displaysurface
	128	(qxl->guest_primary.surface.width,
	129	qxl->guest_primary.surface.height);
4c19ebb5	130	}
c78f7137	131	dpy_gfx_replace_surface(vga->con, surface);
a19cbfb3	132	}
c58c7b95 GH	133
	134	if (!qxl->guest_primary.data) {
	135	return;
	136	}
81fb6f15 AL	137	for (i = 0; i < qxl->num_dirty_rects; i++) {
81fb6f15 AL	138	if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
a19cbfb3 GH	139	break;
a19cbfb3 GH	140	}
e2efc0a3	141	qxl_blit(qxl, qxl->dirty+i);
c78f7137	142	dpy_gfx_update(vga->con,
a93a4a22 GH	143	qxl->dirty[i].left, qxl->dirty[i].top,
	144	qxl->dirty[i].right - qxl->dirty[i].left,
	145	qxl->dirty[i].bottom - qxl->dirty[i].top);
a19cbfb3	146	}
81fb6f15 AL	147	qxl->num_dirty_rects = 0;
	148	}
	149
	150	/*
	151	* use ssd.lock to protect render_update_cookie_num.
	152	* qxl_render_update is called by io thread or vcpu thread, and the completion
	153	* callbacks are called by spice_server thread, defering to bh called from the
	154	* io thread.
	155	*/
	156	void qxl_render_update(PCIQXLDevice *qxl)
	157	{
	158	QXLCookie *cookie;
	159
	160	qemu_mutex_lock(&qxl->ssd.lock);
	161
	162	if (!runstate_is_running() \|\| !qxl->guest_primary.commands) {
	163	qxl_render_update_area_unlocked(qxl);
	164	qemu_mutex_unlock(&qxl->ssd.lock);
	165	return;
	166	}
	167
	168	qxl->guest_primary.commands = 0;
	169	qxl->render_update_cookie_num++;
	170	qemu_mutex_unlock(&qxl->ssd.lock);
	171	cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
	172	0);
	173	qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
	174	qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
	175	0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
	176	}
	177
	178	void qxl_render_update_area_bh(void *opaque)
	179	{
	180	PCIQXLDevice *qxl = opaque;
	181
	182	qemu_mutex_lock(&qxl->ssd.lock);
	183	qxl_render_update_area_unlocked(qxl);
	184	qemu_mutex_unlock(&qxl->ssd.lock);
	185	}
	186
	187	void qxl_render_update_area_done(PCIQXLDevice qxl, QXLCookie cookie)
	188	{
	189	qemu_mutex_lock(&qxl->ssd.lock);
d53291cf	190	trace_qxl_render_update_area_done(cookie);
81fb6f15 AL	191	qemu_bh_schedule(qxl->update_area_bh);
	192	qxl->render_update_cookie_num--;
	193	qemu_mutex_unlock(&qxl->ssd.lock);
	194	g_free(cookie);
a19cbfb3 GH	195	}
	196
	197	static QEMUCursor qxl_cursor(PCIQXLDevice qxl, QXLCursor *cursor)
	198	{
	199	QEMUCursor *c;
	200	uint8_t image, mask;
66d3f196	201	size_t size;
a19cbfb3 GH	202
	203	c = cursor_alloc(cursor->header.width, cursor->header.height);
	204	c->hot_x = cursor->header.hot_spot_x;
	205	c->hot_y = cursor->header.hot_spot_y;
	206	switch (cursor->header.type) {
	207	case SPICE_CURSOR_TYPE_ALPHA:
bfc10122	208	size = sizeof(uint32_t) * cursor->header.width * cursor->header.height;
a19cbfb3 GH	209	memcpy(c->data, cursor->chunk.data, size);
	210	if (qxl->debug > 2) {
	211	cursor_print_ascii_art(c, "qxl/alpha");
	212	}
	213	break;
	214	case SPICE_CURSOR_TYPE_MONO:
	215	mask = cursor->chunk.data;
	216	image = mask + cursor_get_mono_bpl(c) * c->width;
	217	cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
	218	if (qxl->debug > 2) {
	219	cursor_print_ascii_art(c, "qxl/mono");
	220	}
	221	break;
	222	default:
	223	fprintf(stderr, "%s: not implemented: type %d\n",
	224	__FUNCTION__, cursor->header.type);
	225	goto fail;
	226	}
	227	return c;
	228
	229	fail:
	230	cursor_put(c);
	231	return NULL;
	232	}
	233
	234
	235	/* called from spice server thread context only */
fae2afb1	236	int qxl_render_cursor(PCIQXLDevice qxl, QXLCommandExt ext)
a19cbfb3 GH	237	{
	238	QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
	239	QXLCursor *cursor;
	240	QEMUCursor *c;
a19cbfb3	241
fae2afb1 AL	242	if (!cmd) {
	243	return 1;
	244	}
	245
c78f7137	246	if (!dpy_cursor_define_supported(qxl->vga.con)) {
fae2afb1	247	return 0;
a19cbfb3 GH	248	}
	249
	250	if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
	251	fprintf(stderr, "%s", __FUNCTION__);
	252	qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
	253	fprintf(stderr, "\n");
	254	}
	255	switch (cmd->type) {
	256	case QXL_CURSOR_SET:
a19cbfb3	257	cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
fae2afb1 AL	258	if (!cursor) {
	259	return 1;
	260	}
a19cbfb3 GH	261	if (cursor->chunk.data_size != cursor->data_size) {
a19cbfb3 GH	262	fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
fae2afb1	263	return 1;
a19cbfb3 GH	264	}
	265	c = qxl_cursor(qxl, cursor);
	266	if (c == NULL) {
	267	c = cursor_builtin_left_ptr();
	268	}
07536094 GH	269	qemu_mutex_lock(&qxl->ssd.lock);
	270	if (qxl->ssd.cursor) {
	271	cursor_put(qxl->ssd.cursor);
	272	}
	273	qxl->ssd.cursor = c;
	274	qxl->ssd.mouse_x = cmd->u.set.position.x;
	275	qxl->ssd.mouse_y = cmd->u.set.position.y;
	276	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	277	break;
a19cbfb3 GH	278	case QXL_CURSOR_MOVE:
07536094 GH	279	qemu_mutex_lock(&qxl->ssd.lock);
	280	qxl->ssd.mouse_x = cmd->u.position.x;
	281	qxl->ssd.mouse_y = cmd->u.position.y;
	282	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	283	break;
a19cbfb3 GH	284	}
fae2afb1	285	return 0;
a19cbfb3	286	}