[qemu.git] / hw / 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 "hw/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;
    }
    if (!qxl->guest_primary.data) {
        trace_qxl_render_blit_guest_primary_initialized();
        qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
    }
    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 = memory_region_get_ram_ptr(&qxl->vga.vram);
        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);
    }
    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 = cursor->header.width * cursor->header.height * sizeof(uint32_t);
        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
83c9f4ca	22	#include "hw/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;
	33	}
	34	if (!qxl->guest_primary.data) {
d53291cf	35	trace_qxl_render_blit_guest_primary_initialized();
4c19ebb5 AL	36	qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
4c19ebb5 AL	37	}
d53291cf	38	trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
4c19ebb5 AL	39	rect->left, rect->right, rect->top, rect->bottom);
4c19ebb5 AL	40	src = qxl->guest_primary.data;
e2efc0a3 GH	41	if (qxl->guest_primary.qxl_stride < 0) {
	42	/* qxl surface is upside down, walk src scanlines
	43	* in reverse order to flip it */
	44	src += (qxl->guest_primary.surface.height - rect->top - 1) *
	45	qxl->guest_primary.abs_stride;
	46	} else {
	47	src += rect->top * qxl->guest_primary.abs_stride;
	48	}
0e2487bd	49	dst += rect->top * qxl->guest_primary.abs_stride;
a19cbfb3 GH	50	src += rect->left * qxl->guest_primary.bytes_pp;
	51	dst += rect->left * qxl->guest_primary.bytes_pp;
	52	len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
	53
	54	for (i = rect->top; i < rect->bottom; i++) {
	55	memcpy(dst, src, len);
0e2487bd	56	dst += qxl->guest_primary.abs_stride;
e2efc0a3	57	src += qxl->guest_primary.qxl_stride;
a19cbfb3 GH	58	}
	59	}
	60
	61	void qxl_render_resize(PCIQXLDevice *qxl)
	62	{
	63	QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
	64
0e2487bd GH	65	qxl->guest_primary.qxl_stride = sc->stride;
0e2487bd GH	66	qxl->guest_primary.abs_stride = abs(sc->stride);
a19cbfb3 GH	67	qxl->guest_primary.resized++;
	68	switch (sc->format) {
	69	case SPICE_SURFACE_FMT_16_555:
	70	qxl->guest_primary.bytes_pp = 2;
	71	qxl->guest_primary.bits_pp = 15;
	72	break;
	73	case SPICE_SURFACE_FMT_16_565:
	74	qxl->guest_primary.bytes_pp = 2;
	75	qxl->guest_primary.bits_pp = 16;
	76	break;
	77	case SPICE_SURFACE_FMT_32_xRGB:
	78	case SPICE_SURFACE_FMT_32_ARGB:
	79	qxl->guest_primary.bytes_pp = 4;
	80	qxl->guest_primary.bits_pp = 32;
	81	break;
	82	default:
	83	fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
	84	qxl->guest_primary.surface.format);
	85	qxl->guest_primary.bytes_pp = 4;
	86	qxl->guest_primary.bits_pp = 32;
	87	break;
	88	}
	89	}
	90
81fb6f15 AL	91	static void qxl_set_rect_to_surface(PCIQXLDevice qxl, QXLRect area)
	92	{
	93	area->left = 0;
	94	area->right = qxl->guest_primary.surface.width;
	95	area->top = 0;
	96	area->bottom = qxl->guest_primary.surface.height;
	97	}
	98
	99	static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
a19cbfb3 GH	100	{
a19cbfb3 GH	101	VGACommonState *vga = &qxl->vga;
da229ef3	102	DisplaySurface *surface;
81fb6f15	103	int i;
a19cbfb3 GH	104
	105	if (qxl->guest_primary.resized) {
	106	qxl->guest_primary.resized = 0;
b1950430	107	qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
81fb6f15 AL	108	qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
81fb6f15 AL	109	qxl->num_dirty_rects = 1;
d53291cf	110	trace_qxl_render_guest_primary_resized(
a19cbfb3 GH	111	qxl->guest_primary.surface.width,
a19cbfb3 GH	112	qxl->guest_primary.surface.height,
0e2487bd	113	qxl->guest_primary.qxl_stride,
a19cbfb3	114	qxl->guest_primary.bytes_pp,
4c19ebb5	115	qxl->guest_primary.bits_pp);
4c19ebb5	116	if (qxl->guest_primary.qxl_stride > 0) {
da229ef3	117	surface = qemu_create_displaysurface_from
2f464b5a GH	118	(qxl->guest_primary.surface.width,
	119	qxl->guest_primary.surface.height,
	120	qxl->guest_primary.bits_pp,
	121	qxl->guest_primary.abs_stride,
b1424e03 GH	122	qxl->guest_primary.data,
b1424e03 GH	123	false);
4c19ebb5	124	} else {
da229ef3 GH	125	surface = qemu_create_displaysurface
	126	(qxl->guest_primary.surface.width,
	127	qxl->guest_primary.surface.height);
4c19ebb5	128	}
c78f7137	129	dpy_gfx_replace_surface(vga->con, surface);
a19cbfb3	130	}
81fb6f15 AL	131	for (i = 0; i < qxl->num_dirty_rects; i++) {
81fb6f15 AL	132	if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
a19cbfb3 GH	133	break;
a19cbfb3 GH	134	}
e2efc0a3	135	qxl_blit(qxl, qxl->dirty+i);
c78f7137	136	dpy_gfx_update(vga->con,
a93a4a22 GH	137	qxl->dirty[i].left, qxl->dirty[i].top,
	138	qxl->dirty[i].right - qxl->dirty[i].left,
	139	qxl->dirty[i].bottom - qxl->dirty[i].top);
a19cbfb3	140	}
81fb6f15 AL	141	qxl->num_dirty_rects = 0;
	142	}
	143
	144	/*
	145	* use ssd.lock to protect render_update_cookie_num.
	146	* qxl_render_update is called by io thread or vcpu thread, and the completion
	147	* callbacks are called by spice_server thread, defering to bh called from the
	148	* io thread.
	149	*/
	150	void qxl_render_update(PCIQXLDevice *qxl)
	151	{
	152	QXLCookie *cookie;
	153
	154	qemu_mutex_lock(&qxl->ssd.lock);
	155
	156	if (!runstate_is_running() \|\| !qxl->guest_primary.commands) {
	157	qxl_render_update_area_unlocked(qxl);
	158	qemu_mutex_unlock(&qxl->ssd.lock);
	159	return;
	160	}
	161
	162	qxl->guest_primary.commands = 0;
	163	qxl->render_update_cookie_num++;
	164	qemu_mutex_unlock(&qxl->ssd.lock);
	165	cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
	166	0);
	167	qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
	168	qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
	169	0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
	170	}
	171
	172	void qxl_render_update_area_bh(void *opaque)
	173	{
	174	PCIQXLDevice *qxl = opaque;
	175
	176	qemu_mutex_lock(&qxl->ssd.lock);
	177	qxl_render_update_area_unlocked(qxl);
	178	qemu_mutex_unlock(&qxl->ssd.lock);
	179	}
	180
	181	void qxl_render_update_area_done(PCIQXLDevice qxl, QXLCookie cookie)
	182	{
	183	qemu_mutex_lock(&qxl->ssd.lock);
d53291cf	184	trace_qxl_render_update_area_done(cookie);
81fb6f15 AL	185	qemu_bh_schedule(qxl->update_area_bh);
	186	qxl->render_update_cookie_num--;
	187	qemu_mutex_unlock(&qxl->ssd.lock);
	188	g_free(cookie);
a19cbfb3 GH	189	}
	190
	191	static QEMUCursor qxl_cursor(PCIQXLDevice qxl, QXLCursor *cursor)
	192	{
	193	QEMUCursor *c;
	194	uint8_t image, mask;
66d3f196	195	size_t size;
a19cbfb3 GH	196
	197	c = cursor_alloc(cursor->header.width, cursor->header.height);
	198	c->hot_x = cursor->header.hot_spot_x;
	199	c->hot_y = cursor->header.hot_spot_y;
	200	switch (cursor->header.type) {
	201	case SPICE_CURSOR_TYPE_ALPHA:
	202	size = cursor->header.width * cursor->header.height * sizeof(uint32_t);
	203	memcpy(c->data, cursor->chunk.data, size);
	204	if (qxl->debug > 2) {
	205	cursor_print_ascii_art(c, "qxl/alpha");
	206	}
	207	break;
	208	case SPICE_CURSOR_TYPE_MONO:
	209	mask = cursor->chunk.data;
	210	image = mask + cursor_get_mono_bpl(c) * c->width;
	211	cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
	212	if (qxl->debug > 2) {
	213	cursor_print_ascii_art(c, "qxl/mono");
	214	}
	215	break;
	216	default:
	217	fprintf(stderr, "%s: not implemented: type %d\n",
	218	__FUNCTION__, cursor->header.type);
	219	goto fail;
	220	}
	221	return c;
	222
	223	fail:
	224	cursor_put(c);
	225	return NULL;
	226	}
	227
	228
	229	/* called from spice server thread context only */
fae2afb1	230	int qxl_render_cursor(PCIQXLDevice qxl, QXLCommandExt ext)
a19cbfb3 GH	231	{
	232	QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
	233	QXLCursor *cursor;
	234	QEMUCursor *c;
a19cbfb3	235
fae2afb1 AL	236	if (!cmd) {
	237	return 1;
	238	}
	239
c78f7137	240	if (!dpy_cursor_define_supported(qxl->vga.con)) {
fae2afb1	241	return 0;
a19cbfb3 GH	242	}
	243
	244	if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
	245	fprintf(stderr, "%s", __FUNCTION__);
	246	qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
	247	fprintf(stderr, "\n");
	248	}
	249	switch (cmd->type) {
	250	case QXL_CURSOR_SET:
a19cbfb3	251	cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
fae2afb1 AL	252	if (!cursor) {
	253	return 1;
	254	}
a19cbfb3 GH	255	if (cursor->chunk.data_size != cursor->data_size) {
a19cbfb3 GH	256	fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
fae2afb1	257	return 1;
a19cbfb3 GH	258	}
	259	c = qxl_cursor(qxl, cursor);
	260	if (c == NULL) {
	261	c = cursor_builtin_left_ptr();
	262	}
07536094 GH	263	qemu_mutex_lock(&qxl->ssd.lock);
	264	if (qxl->ssd.cursor) {
	265	cursor_put(qxl->ssd.cursor);
	266	}
	267	qxl->ssd.cursor = c;
	268	qxl->ssd.mouse_x = cmd->u.set.position.x;
	269	qxl->ssd.mouse_y = cmd->u.set.position.y;
	270	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	271	break;
a19cbfb3 GH	272	case QXL_CURSOR_MOVE:
07536094 GH	273	qemu_mutex_lock(&qxl->ssd.lock);
	274	qxl->ssd.mouse_x = cmd->u.position.x;
	275	qxl->ssd.mouse_y = cmd->u.position.y;
	276	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	277	break;
a19cbfb3 GH	278	}
fae2afb1	279	return 0;
a19cbfb3	280	}