[mirror_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 {
            type = PIXMAN_TYPE_RGBA;
        }
    } else if (rshift < gshift && gshift < bshift) {
        if (rshift == 0) {
            type = PIXMAN_TYPE_ABGR;
        } else {
            type = PIXMAN_TYPE_BGRA;
        }
    }
    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 {
d2ec7e24	99	type = PIXMAN_TYPE_RGBA;
d2ec7e24 GH	100	}
	101	} else if (rshift < gshift && gshift < bshift) {
	102	if (rshift == 0) {
	103	type = PIXMAN_TYPE_ABGR;
	104	} else {
	105	type = PIXMAN_TYPE_BGRA;
	106	}
	107	}
	108	return type;
	109	}
	110
	111	pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
	112	{
	113	pixman_format_code_t format;
	114	int type;
	115
	116	type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
	117	format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
	118	pf->abits, pf->rbits, pf->gbits, pf->bbits);
	119	if (!pixman_format_supported_source(format)) {
	120	return 0;
	121	}
	122	return format;
	123	}
	124
8cd996f4 GH	125	/*
	126	* Return true for known-good pixman conversions.
	127	*
	128	* UIs using pixman for format conversion can hook this into
	129	* DisplayChangeListenerOps->dpy_gfx_check_format
	130	*/
	131	bool qemu_pixman_check_format(DisplayChangeListener *dcl,
	132	pixman_format_code_t format)
	133	{
	134	switch (format) {
	135	/* 32 bpp */
	136	case PIXMAN_x8r8g8b8:
	137	case PIXMAN_a8r8g8b8:
	138	case PIXMAN_b8g8r8x8:
	139	case PIXMAN_b8g8r8a8:
	140	/* 24 bpp */
	141	case PIXMAN_r8g8b8:
	142	case PIXMAN_b8g8r8:
	143	/* 16 bpp */
	144	case PIXMAN_x1r5g5b5:
	145	case PIXMAN_r5g6b5:
	146	return true;
	147	default:
	148	return false;
	149	}
	150	}
	151
d2ec7e24 GH	152	pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
	153	int width)
	154	{
	155	pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
	156	assert(image != NULL);
	157	return image;
	158	}
	159
43c7d8bd	160	/* fill linebuf from framebuffer */
d2ec7e24	161	void qemu_pixman_linebuf_fill(pixman_image_t linebuf, pixman_image_t fb,
bc210eb1	162	int width, int x, int y)
d2ec7e24 GH	163	{
d2ec7e24 GH	164	pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
bc210eb1	165	x, y, 0, 0, 0, 0, width, 1);
d2ec7e24 GH	166	}
d2ec7e24 GH	167
43c7d8bd GH	168	/* copy linebuf to framebuffer */
	169	void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
	170	pixman_image_t *linebuf)
	171	{
	172	pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
	173	0, 0, 0, 0, x, y, width, 1);
	174	}
	175
d9a86569 GH	176	pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
	177	pixman_image_t *image)
	178	{
9be38598 EH	179	return pixman_image_create_bits(format,
	180	pixman_image_get_width(image),
	181	pixman_image_get_height(image),
	182	NULL,
	183	pixman_image_get_stride(image));
d9a86569 GH	184	}
d9a86569 GH	185
d2ec7e24 GH	186	void qemu_pixman_image_unref(pixman_image_t *image)
	187	{
	188	if (image == NULL) {
	189	return;
	190	}
	191	pixman_image_unref(image);
	192	}
867c538f GH	193
	194	pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
	195	{
	196	pixman_color_t c;
	197
	198	c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
	199	c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
	200	c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
	201	c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
	202	return c;
	203	}
b7627952 GH	204
	205	pixman_image_t qemu_pixman_glyph_from_vgafont(int height, const uint8_t font,
	206	unsigned int ch)
	207	{
	208	pixman_image_t *glyph;
	209	uint8_t *data;
	210	bool bit;
	211	int x, y;
	212
	213	glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
	214	NULL, 0);
	215	data = (uint8_t *)pixman_image_get_data(glyph);
	216
	217	font += height * ch;
	218	for (y = 0; y < height; y++, font++) {
	219	for (x = 0; x < 8; x++, data++) {
	220	bit = (*font) & (1 << (7-x));
	221	*data = bit ? 0xff : 0x00;
	222	}
	223	}
	224	return glyph;
	225	}
	226
	227	void qemu_pixman_glyph_render(pixman_image_t *glyph,
	228	pixman_image_t *surface,
	229	pixman_color_t *fgcol,
	230	pixman_color_t *bgcol,
	231	int x, int y, int cw, int ch)
	232	{
	233	pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
	234	pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
	235
	236	pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
	237	0, 0, 0, 0,
	238	cw * x, ch * y,
	239	cw, ch);
	240	pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
	241	0, 0, 0, 0,
	242	cw * x, ch * y,
	243	cw, ch);
	244	pixman_image_unref(ifg);
	245	pixman_image_unref(ibg);
	246	}