[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 "qxl.h"

static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
{
    uint8_t *src;
    uint8_t *dst = ds_get_data(qxl->vga.ds);
    int len, i;

    if (is_buffer_shared(qxl->vga.ds->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;
    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) {
            qemu_free_displaysurface(vga->ds);
            vga->ds->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 {
            qemu_resize_displaysurface(vga->ds,
                    qxl->guest_primary.surface.width,
                    qxl->guest_primary.surface.height);
        }
        dpy_gfx_resize(vga->ds);
    }
    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->ds,
                       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->ssd.ds)) {
        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
	22	#include "qxl.h"
	23
e2efc0a3	24	static void qxl_blit(PCIQXLDevice qxl, QXLRect rect)
a19cbfb3	25	{
4c19ebb5	26	uint8_t *src;
b6e9f637	27	uint8_t *dst = ds_get_data(qxl->vga.ds);
a19cbfb3 GH	28	int len, i;
a19cbfb3 GH	29
e2efc0a3	30	if (is_buffer_shared(qxl->vga.ds->surface)) {
4c19ebb5 AL	31	return;
	32	}
	33	if (!qxl->guest_primary.data) {
d53291cf	34	trace_qxl_render_blit_guest_primary_initialized();
4c19ebb5 AL	35	qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
4c19ebb5 AL	36	}
d53291cf	37	trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
4c19ebb5 AL	38	rect->left, rect->right, rect->top, rect->bottom);
4c19ebb5 AL	39	src = qxl->guest_primary.data;
e2efc0a3 GH	40	if (qxl->guest_primary.qxl_stride < 0) {
	41	/* qxl surface is upside down, walk src scanlines
	42	* in reverse order to flip it */
	43	src += (qxl->guest_primary.surface.height - rect->top - 1) *
	44	qxl->guest_primary.abs_stride;
	45	} else {
	46	src += rect->top * qxl->guest_primary.abs_stride;
	47	}
0e2487bd	48	dst += rect->top * qxl->guest_primary.abs_stride;
a19cbfb3 GH	49	src += rect->left * qxl->guest_primary.bytes_pp;
	50	dst += rect->left * qxl->guest_primary.bytes_pp;
	51	len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
	52
	53	for (i = rect->top; i < rect->bottom; i++) {
	54	memcpy(dst, src, len);
0e2487bd	55	dst += qxl->guest_primary.abs_stride;
e2efc0a3	56	src += qxl->guest_primary.qxl_stride;
a19cbfb3 GH	57	}
	58	}
	59
	60	void qxl_render_resize(PCIQXLDevice *qxl)
	61	{
	62	QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
	63
0e2487bd GH	64	qxl->guest_primary.qxl_stride = sc->stride;
0e2487bd GH	65	qxl->guest_primary.abs_stride = abs(sc->stride);
a19cbfb3 GH	66	qxl->guest_primary.resized++;
	67	switch (sc->format) {
	68	case SPICE_SURFACE_FMT_16_555:
	69	qxl->guest_primary.bytes_pp = 2;
	70	qxl->guest_primary.bits_pp = 15;
	71	break;
	72	case SPICE_SURFACE_FMT_16_565:
	73	qxl->guest_primary.bytes_pp = 2;
	74	qxl->guest_primary.bits_pp = 16;
	75	break;
	76	case SPICE_SURFACE_FMT_32_xRGB:
	77	case SPICE_SURFACE_FMT_32_ARGB:
	78	qxl->guest_primary.bytes_pp = 4;
	79	qxl->guest_primary.bits_pp = 32;
	80	break;
	81	default:
	82	fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
	83	qxl->guest_primary.surface.format);
	84	qxl->guest_primary.bytes_pp = 4;
	85	qxl->guest_primary.bits_pp = 32;
	86	break;
	87	}
	88	}
	89
81fb6f15 AL	90	static void qxl_set_rect_to_surface(PCIQXLDevice qxl, QXLRect area)
	91	{
	92	area->left = 0;
	93	area->right = qxl->guest_primary.surface.width;
	94	area->top = 0;
	95	area->bottom = qxl->guest_primary.surface.height;
	96	}
	97
	98	static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
a19cbfb3 GH	99	{
a19cbfb3 GH	100	VGACommonState *vga = &qxl->vga;
81fb6f15	101	int i;
a19cbfb3 GH	102
	103	if (qxl->guest_primary.resized) {
	104	qxl->guest_primary.resized = 0;
b1950430	105	qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
81fb6f15 AL	106	qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
81fb6f15 AL	107	qxl->num_dirty_rects = 1;
d53291cf	108	trace_qxl_render_guest_primary_resized(
a19cbfb3 GH	109	qxl->guest_primary.surface.width,
a19cbfb3 GH	110	qxl->guest_primary.surface.height,
0e2487bd	111	qxl->guest_primary.qxl_stride,
a19cbfb3	112	qxl->guest_primary.bytes_pp,
4c19ebb5	113	qxl->guest_primary.bits_pp);
4c19ebb5 AL	114	if (qxl->guest_primary.qxl_stride > 0) {
4c19ebb5 AL	115	qemu_free_displaysurface(vga->ds);
2f464b5a GH	116	vga->ds->surface = qemu_create_displaysurface_from
	117	(qxl->guest_primary.surface.width,
	118	qxl->guest_primary.surface.height,
	119	qxl->guest_primary.bits_pp,
	120	qxl->guest_primary.abs_stride,
d49fed4c GH	121	qxl->guest_primary.data,
d49fed4c GH	122	false);
4c19ebb5 AL	123	} else {
	124	qemu_resize_displaysurface(vga->ds,
	125	qxl->guest_primary.surface.width,
	126	qxl->guest_primary.surface.height);
	127	}
a93a4a22	128	dpy_gfx_resize(vga->ds);
a19cbfb3	129	}
81fb6f15 AL	130	for (i = 0; i < qxl->num_dirty_rects; i++) {
81fb6f15 AL	131	if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
a19cbfb3 GH	132	break;
a19cbfb3 GH	133	}
e2efc0a3	134	qxl_blit(qxl, qxl->dirty+i);
a93a4a22 GH	135	dpy_gfx_update(vga->ds,
	136	qxl->dirty[i].left, qxl->dirty[i].top,
	137	qxl->dirty[i].right - qxl->dirty[i].left,
	138	qxl->dirty[i].bottom - qxl->dirty[i].top);
a19cbfb3	139	}
81fb6f15 AL	140	qxl->num_dirty_rects = 0;
	141	}
	142
	143	/*
	144	* use ssd.lock to protect render_update_cookie_num.
	145	* qxl_render_update is called by io thread or vcpu thread, and the completion
	146	* callbacks are called by spice_server thread, defering to bh called from the
	147	* io thread.
	148	*/
	149	void qxl_render_update(PCIQXLDevice *qxl)
	150	{
	151	QXLCookie *cookie;
	152
	153	qemu_mutex_lock(&qxl->ssd.lock);
	154
	155	if (!runstate_is_running() \|\| !qxl->guest_primary.commands) {
	156	qxl_render_update_area_unlocked(qxl);
	157	qemu_mutex_unlock(&qxl->ssd.lock);
	158	return;
	159	}
	160
	161	qxl->guest_primary.commands = 0;
	162	qxl->render_update_cookie_num++;
	163	qemu_mutex_unlock(&qxl->ssd.lock);
	164	cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
	165	0);
	166	qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
	167	qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
	168	0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
	169	}
	170
	171	void qxl_render_update_area_bh(void *opaque)
	172	{
	173	PCIQXLDevice *qxl = opaque;
	174
	175	qemu_mutex_lock(&qxl->ssd.lock);
	176	qxl_render_update_area_unlocked(qxl);
	177	qemu_mutex_unlock(&qxl->ssd.lock);
	178	}
	179
	180	void qxl_render_update_area_done(PCIQXLDevice qxl, QXLCookie cookie)
	181	{
	182	qemu_mutex_lock(&qxl->ssd.lock);
d53291cf	183	trace_qxl_render_update_area_done(cookie);
81fb6f15 AL	184	qemu_bh_schedule(qxl->update_area_bh);
	185	qxl->render_update_cookie_num--;
	186	qemu_mutex_unlock(&qxl->ssd.lock);
	187	g_free(cookie);
a19cbfb3 GH	188	}
	189
	190	static QEMUCursor qxl_cursor(PCIQXLDevice qxl, QXLCursor *cursor)
	191	{
	192	QEMUCursor *c;
	193	uint8_t image, mask;
66d3f196	194	size_t size;
a19cbfb3 GH	195
	196	c = cursor_alloc(cursor->header.width, cursor->header.height);
	197	c->hot_x = cursor->header.hot_spot_x;
	198	c->hot_y = cursor->header.hot_spot_y;
	199	switch (cursor->header.type) {
	200	case SPICE_CURSOR_TYPE_ALPHA:
	201	size = cursor->header.width * cursor->header.height * sizeof(uint32_t);
	202	memcpy(c->data, cursor->chunk.data, size);
	203	if (qxl->debug > 2) {
	204	cursor_print_ascii_art(c, "qxl/alpha");
	205	}
	206	break;
	207	case SPICE_CURSOR_TYPE_MONO:
	208	mask = cursor->chunk.data;
	209	image = mask + cursor_get_mono_bpl(c) * c->width;
	210	cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
	211	if (qxl->debug > 2) {
	212	cursor_print_ascii_art(c, "qxl/mono");
	213	}
	214	break;
	215	default:
	216	fprintf(stderr, "%s: not implemented: type %d\n",
	217	__FUNCTION__, cursor->header.type);
	218	goto fail;
	219	}
	220	return c;
	221
	222	fail:
	223	cursor_put(c);
	224	return NULL;
	225	}
	226
	227
	228	/* called from spice server thread context only */
fae2afb1	229	int qxl_render_cursor(PCIQXLDevice qxl, QXLCommandExt ext)
a19cbfb3 GH	230	{
	231	QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
	232	QXLCursor *cursor;
	233	QEMUCursor *c;
a19cbfb3	234
fae2afb1 AL	235	if (!cmd) {
	236	return 1;
	237	}
	238
bf2fde70	239	if (!dpy_cursor_define_supported(qxl->ssd.ds)) {
fae2afb1	240	return 0;
a19cbfb3 GH	241	}
	242
	243	if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
	244	fprintf(stderr, "%s", __FUNCTION__);
	245	qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
	246	fprintf(stderr, "\n");
	247	}
	248	switch (cmd->type) {
	249	case QXL_CURSOR_SET:
a19cbfb3	250	cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
fae2afb1 AL	251	if (!cursor) {
	252	return 1;
	253	}
a19cbfb3 GH	254	if (cursor->chunk.data_size != cursor->data_size) {
a19cbfb3 GH	255	fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
fae2afb1	256	return 1;
a19cbfb3 GH	257	}
	258	c = qxl_cursor(qxl, cursor);
	259	if (c == NULL) {
	260	c = cursor_builtin_left_ptr();
	261	}
07536094 GH	262	qemu_mutex_lock(&qxl->ssd.lock);
	263	if (qxl->ssd.cursor) {
	264	cursor_put(qxl->ssd.cursor);
	265	}
	266	qxl->ssd.cursor = c;
	267	qxl->ssd.mouse_x = cmd->u.set.position.x;
	268	qxl->ssd.mouse_y = cmd->u.set.position.y;
	269	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	270	break;
a19cbfb3 GH	271	case QXL_CURSOR_MOVE:
07536094 GH	272	qemu_mutex_lock(&qxl->ssd.lock);
	273	qxl->ssd.mouse_x = cmd->u.position.x;
	274	qxl->ssd.mouse_y = cmd->u.position.y;
	275	qemu_mutex_unlock(&qxl->ssd.lock);
a19cbfb3 GH	276	break;
a19cbfb3 GH	277	}
fae2afb1	278	return 0;
a19cbfb3	279	}