[qemu.git] / ui / qemu-pixman.c

/*
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "qemu/osdep.h"
#include "qemu-common.h"
#include "ui/console.h"

PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
{
    PixelFormat pf;
    uint8_t bpp;

    bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
    pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
    pf.depth = PIXMAN_FORMAT_DEPTH(format);

    pf.abits = PIXMAN_FORMAT_A(format);
    pf.rbits = PIXMAN_FORMAT_R(format);
    pf.gbits = PIXMAN_FORMAT_G(format);
    pf.bbits = PIXMAN_FORMAT_B(format);

    switch (PIXMAN_FORMAT_TYPE(format)) {
    case PIXMAN_TYPE_ARGB:
        pf.ashift = pf.bbits + pf.gbits + pf.rbits;
        pf.rshift = pf.bbits + pf.gbits;
        pf.gshift = pf.bbits;
        pf.bshift = 0;
        break;
    case PIXMAN_TYPE_ABGR:
        pf.ashift = pf.rbits + pf.gbits + pf.bbits;
        pf.bshift = pf.rbits + pf.gbits;
        pf.gshift = pf.rbits;
        pf.rshift = 0;
        break;
    case PIXMAN_TYPE_BGRA:
	pf.bshift = bpp - pf.bbits;
        pf.gshift = bpp - (pf.bbits + pf.gbits);
        pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
        pf.ashift = 0;
        break;
    case PIXMAN_TYPE_RGBA:
        pf.rshift = bpp - pf.rbits;
        pf.gshift = bpp - (pf.rbits + pf.gbits);
        pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
        pf.ashift = 0;
        break;
    default:
        g_assert_not_reached();
        break;
    }

    pf.amax = (1 << pf.abits) - 1;
    pf.rmax = (1 << pf.rbits) - 1;
    pf.gmax = (1 << pf.gbits) - 1;
    pf.bmax = (1 << pf.bbits) - 1;
    pf.amask = pf.amax << pf.ashift;
    pf.rmask = pf.rmax << pf.rshift;
    pf.gmask = pf.gmax << pf.gshift;
    pf.bmask = pf.bmax << pf.bshift;

    return pf;
}

pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
{
    if (native_endian) {
        switch (bpp) {
        case 15:
            return PIXMAN_x1r5g5b5;
        case 16:
            return PIXMAN_r5g6b5;
        case 24:
            return PIXMAN_r8g8b8;
        case 32:
            return PIXMAN_x8r8g8b8;
        }
    } else {
        switch (bpp) {
        case 24:
            return PIXMAN_b8g8r8;
        case 32:
            return PIXMAN_b8g8r8x8;
        break;
        }
    }
    return 0;
}

int qemu_pixman_get_type(int rshift, int gshift, int bshift)
{
    int type = PIXMAN_TYPE_OTHER;

    if (rshift > gshift && gshift > bshift) {
        if (bshift == 0) {
            type = PIXMAN_TYPE_ARGB;
        } else {
#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
            type = PIXMAN_TYPE_RGBA;
#endif
        }
    } else if (rshift < gshift && gshift < bshift) {
        if (rshift == 0) {
            type = PIXMAN_TYPE_ABGR;
        } else {
#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)
            type = PIXMAN_TYPE_BGRA;
#endif
        }
    }
    return type;
}

pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
{
    pixman_format_code_t format;
    int type;

    type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
    format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
                           pf->abits, pf->rbits, pf->gbits, pf->bbits);
    if (!pixman_format_supported_source(format)) {
        return 0;
    }
    return format;
}

/*
 * Return true for known-good pixman conversions.
 *
 * UIs using pixman for format conversion can hook this into
 * DisplayChangeListenerOps->dpy_gfx_check_format
 */
bool qemu_pixman_check_format(DisplayChangeListener *dcl,
                              pixman_format_code_t format)
{
    switch (format) {
    /* 32 bpp */
    case PIXMAN_x8r8g8b8:
    case PIXMAN_a8r8g8b8:
    case PIXMAN_b8g8r8x8:
    case PIXMAN_b8g8r8a8:
    /* 24 bpp */
    case PIXMAN_r8g8b8:
    case PIXMAN_b8g8r8:
    /* 16 bpp */
    case PIXMAN_x1r5g5b5:
    case PIXMAN_r5g6b5:
        return true;
    default:
        return false;
    }
}

pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
                                           int width)
{
    pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
    assert(image != NULL);
    return image;
}

/* fill linebuf from framebuffer */
void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
                              int width, int x, int y)
{
    pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
                           x, y, 0, 0, 0, 0, width, 1);
}

/* copy linebuf to framebuffer */
void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
                              pixman_image_t *linebuf)
{
    pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
                           0, 0, 0, 0, x, y, width, 1);
}

pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
                                          pixman_image_t *image)
{
    return pixman_image_create_bits(format,
                                    pixman_image_get_width(image),
                                    pixman_image_get_height(image),
                                    NULL,
                                    pixman_image_get_stride(image));
}

void qemu_pixman_image_unref(pixman_image_t *image)
{
    if (image == NULL) {
        return;
    }
    pixman_image_unref(image);
}

pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
{
    pixman_color_t c;

    c.red   = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
    c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
    c.blue  = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
    c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
    return c;
}

pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
                                               unsigned int ch)
{
    pixman_image_t *glyph;
    uint8_t *data;
    bool bit;
    int x, y;

    glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
                                     NULL, 0);
    data = (uint8_t *)pixman_image_get_data(glyph);

    font += height * ch;
    for (y = 0; y < height; y++, font++) {
        for (x = 0; x < 8; x++, data++) {
            bit = (*font) & (1 << (7-x));
            *data = bit ? 0xff : 0x00;
        }
    }
    return glyph;
}

void qemu_pixman_glyph_render(pixman_image_t *glyph,
                              pixman_image_t *surface,
                              pixman_color_t *fgcol,
                              pixman_color_t *bgcol,
                              int x, int y, int cw, int ch)
{
    pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
    pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);

    pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
                           0, 0, 0, 0,
                           cw * x, ch * y,
                           cw, ch);
    pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
                           0, 0, 0, 0,
                           cw * x, ch * y,
                           cw, ch);
    pixman_image_unref(ifg);
    pixman_image_unref(ibg);
}
Commit	Line	Data
daa8e5a0 GH	1	/*
	2	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	3	* See the COPYING file in the top-level directory.
	4	*/
	5
e16f4c87	6	#include "qemu/osdep.h"
0b087861 PM	7	#include "qemu-common.h"
0b087861 PM	8	#include "ui/console.h"
d2ec7e24	9
a93a3af9 GH	10	PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
	11	{
	12	PixelFormat pf;
	13	uint8_t bpp;
	14
	15	bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
	16	pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
	17	pf.depth = PIXMAN_FORMAT_DEPTH(format);
	18
	19	pf.abits = PIXMAN_FORMAT_A(format);
	20	pf.rbits = PIXMAN_FORMAT_R(format);
	21	pf.gbits = PIXMAN_FORMAT_G(format);
	22	pf.bbits = PIXMAN_FORMAT_B(format);
	23
	24	switch (PIXMAN_FORMAT_TYPE(format)) {
	25	case PIXMAN_TYPE_ARGB:
	26	pf.ashift = pf.bbits + pf.gbits + pf.rbits;
	27	pf.rshift = pf.bbits + pf.gbits;
	28	pf.gshift = pf.bbits;
	29	pf.bshift = 0;
	30	break;
	31	case PIXMAN_TYPE_ABGR:
	32	pf.ashift = pf.rbits + pf.gbits + pf.bbits;
	33	pf.bshift = pf.rbits + pf.gbits;
	34	pf.gshift = pf.rbits;
	35	pf.rshift = 0;
	36	break;
	37	case PIXMAN_TYPE_BGRA:
	38	pf.bshift = bpp - pf.bbits;
	39	pf.gshift = bpp - (pf.bbits + pf.gbits);
	40	pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
	41	pf.ashift = 0;
	42	break;
	43	case PIXMAN_TYPE_RGBA:
	44	pf.rshift = bpp - pf.rbits;
	45	pf.gshift = bpp - (pf.rbits + pf.gbits);
	46	pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
	47	pf.ashift = 0;
	48	break;
	49	default:
	50	g_assert_not_reached();
	51	break;
	52	}
	53
	54	pf.amax = (1 << pf.abits) - 1;
	55	pf.rmax = (1 << pf.rbits) - 1;
	56	pf.gmax = (1 << pf.gbits) - 1;
	57	pf.bmax = (1 << pf.bbits) - 1;
	58	pf.amask = pf.amax << pf.ashift;
	59	pf.rmask = pf.rmax << pf.rshift;
	60	pf.gmask = pf.gmax << pf.gshift;
	61	pf.bmask = pf.bmax << pf.bshift;
	62
	63	return pf;
	64	}
	65
1527a25e GH	66	pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
	67	{
	68	if (native_endian) {
	69	switch (bpp) {
	70	case 15:
	71	return PIXMAN_x1r5g5b5;
	72	case 16:
	73	return PIXMAN_r5g6b5;
	74	case 24:
	75	return PIXMAN_r8g8b8;
	76	case 32:
	77	return PIXMAN_x8r8g8b8;
	78	}
	79	} else {
	80	switch (bpp) {
	81	case 24:
	82	return PIXMAN_b8g8r8;
	83	case 32:
89ec031b	84	return PIXMAN_b8g8r8x8;
1527a25e GH	85	break;
	86	}
	87	}
aca7aaf6	88	return 0;
1527a25e GH	89	}
1527a25e GH	90
d2ec7e24 GH	91	int qemu_pixman_get_type(int rshift, int gshift, int bshift)
	92	{
	93	int type = PIXMAN_TYPE_OTHER;
	94
	95	if (rshift > gshift && gshift > bshift) {
	96	if (bshift == 0) {
	97	type = PIXMAN_TYPE_ARGB;
	98	} else {
	99	#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
	100	type = PIXMAN_TYPE_RGBA;
	101	#endif
	102	}
	103	} else if (rshift < gshift && gshift < bshift) {
	104	if (rshift == 0) {
	105	type = PIXMAN_TYPE_ABGR;
	106	} else {
fbddfc72	107	#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)
d2ec7e24	108	type = PIXMAN_TYPE_BGRA;
6e72719e	109	#endif
d2ec7e24 GH	110	}
	111	}
	112	return type;
	113	}
	114
	115	pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
	116	{
	117	pixman_format_code_t format;
	118	int type;
	119
	120	type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
	121	format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
	122	pf->abits, pf->rbits, pf->gbits, pf->bbits);
	123	if (!pixman_format_supported_source(format)) {
	124	return 0;
	125	}
	126	return format;
	127	}
	128
8cd996f4 GH	129	/*
	130	* Return true for known-good pixman conversions.
	131	*
	132	* UIs using pixman for format conversion can hook this into
	133	* DisplayChangeListenerOps->dpy_gfx_check_format
	134	*/
	135	bool qemu_pixman_check_format(DisplayChangeListener *dcl,
	136	pixman_format_code_t format)
	137	{
	138	switch (format) {
	139	/* 32 bpp */
	140	case PIXMAN_x8r8g8b8:
	141	case PIXMAN_a8r8g8b8:
	142	case PIXMAN_b8g8r8x8:
	143	case PIXMAN_b8g8r8a8:
	144	/* 24 bpp */
	145	case PIXMAN_r8g8b8:
	146	case PIXMAN_b8g8r8:
	147	/* 16 bpp */
	148	case PIXMAN_x1r5g5b5:
	149	case PIXMAN_r5g6b5:
	150	return true;
	151	default:
	152	return false;
	153	}
	154	}
	155
d2ec7e24 GH	156	pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
	157	int width)
	158	{
	159	pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
	160	assert(image != NULL);
	161	return image;
	162	}
	163
43c7d8bd	164	/* fill linebuf from framebuffer */
d2ec7e24	165	void qemu_pixman_linebuf_fill(pixman_image_t linebuf, pixman_image_t fb,
bc210eb1	166	int width, int x, int y)
d2ec7e24 GH	167	{
d2ec7e24 GH	168	pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
bc210eb1	169	x, y, 0, 0, 0, 0, width, 1);
d2ec7e24 GH	170	}
d2ec7e24 GH	171
43c7d8bd GH	172	/* copy linebuf to framebuffer */
	173	void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
	174	pixman_image_t *linebuf)
	175	{
	176	pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
	177	0, 0, 0, 0, x, y, width, 1);
	178	}
	179
d9a86569 GH	180	pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
	181	pixman_image_t *image)
	182	{
9be38598 EH	183	return pixman_image_create_bits(format,
	184	pixman_image_get_width(image),
	185	pixman_image_get_height(image),
	186	NULL,
	187	pixman_image_get_stride(image));
d9a86569 GH	188	}
d9a86569 GH	189
d2ec7e24 GH	190	void qemu_pixman_image_unref(pixman_image_t *image)
	191	{
	192	if (image == NULL) {
	193	return;
	194	}
	195	pixman_image_unref(image);
	196	}
867c538f GH	197
	198	pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
	199	{
	200	pixman_color_t c;
	201
	202	c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
	203	c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
	204	c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
	205	c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
	206	return c;
	207	}
b7627952 GH	208
	209	pixman_image_t qemu_pixman_glyph_from_vgafont(int height, const uint8_t font,
	210	unsigned int ch)
	211	{
	212	pixman_image_t *glyph;
	213	uint8_t *data;
	214	bool bit;
	215	int x, y;
	216
	217	glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
	218	NULL, 0);
	219	data = (uint8_t *)pixman_image_get_data(glyph);
	220
	221	font += height * ch;
	222	for (y = 0; y < height; y++, font++) {
	223	for (x = 0; x < 8; x++, data++) {
	224	bit = (*font) & (1 << (7-x));
	225	*data = bit ? 0xff : 0x00;
	226	}
	227	}
	228	return glyph;
	229	}
	230
	231	void qemu_pixman_glyph_render(pixman_image_t *glyph,
	232	pixman_image_t *surface,
	233	pixman_color_t *fgcol,
	234	pixman_color_t *bgcol,
	235	int x, int y, int cw, int ch)
	236	{
	237	pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
	238	pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
	239
	240	pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
	241	0, 0, 0, 0,
	242	cw * x, ch * y,
	243	cw, ch);
	244	pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
	245	0, 0, 0, 0,
	246	cw * x, ch * y,
	247	cw, ch);
	248	pixman_image_unref(ifg);
	249	pixman_image_unref(ibg);
	250	}