[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-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)
{
    pixman_image_t *mirror;

    mirror = pixman_image_create_bits(format,
                                      pixman_image_get_width(image),
                                      pixman_image_get_height(image),
                                      NULL,
                                      pixman_image_get_stride(image));
    return mirror;
}

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
0b087861 PM	6	#include "qemu-common.h"
0b087861 PM	7	#include "ui/console.h"
d2ec7e24	8
a93a3af9 GH	9	PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
	10	{
	11	PixelFormat pf;
	12	uint8_t bpp;
	13
	14	bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
	15	pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
	16	pf.depth = PIXMAN_FORMAT_DEPTH(format);
	17
	18	pf.abits = PIXMAN_FORMAT_A(format);
	19	pf.rbits = PIXMAN_FORMAT_R(format);
	20	pf.gbits = PIXMAN_FORMAT_G(format);
	21	pf.bbits = PIXMAN_FORMAT_B(format);
	22
	23	switch (PIXMAN_FORMAT_TYPE(format)) {
	24	case PIXMAN_TYPE_ARGB:
	25	pf.ashift = pf.bbits + pf.gbits + pf.rbits;
	26	pf.rshift = pf.bbits + pf.gbits;
	27	pf.gshift = pf.bbits;
	28	pf.bshift = 0;
	29	break;
	30	case PIXMAN_TYPE_ABGR:
	31	pf.ashift = pf.rbits + pf.gbits + pf.bbits;
	32	pf.bshift = pf.rbits + pf.gbits;
	33	pf.gshift = pf.rbits;
	34	pf.rshift = 0;
	35	break;
	36	case PIXMAN_TYPE_BGRA:
	37	pf.bshift = bpp - pf.bbits;
	38	pf.gshift = bpp - (pf.bbits + pf.gbits);
	39	pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
	40	pf.ashift = 0;
	41	break;
	42	case PIXMAN_TYPE_RGBA:
	43	pf.rshift = bpp - pf.rbits;
	44	pf.gshift = bpp - (pf.rbits + pf.gbits);
	45	pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
	46	pf.ashift = 0;
	47	break;
	48	default:
	49	g_assert_not_reached();
	50	break;
	51	}
	52
	53	pf.amax = (1 << pf.abits) - 1;
	54	pf.rmax = (1 << pf.rbits) - 1;
	55	pf.gmax = (1 << pf.gbits) - 1;
	56	pf.bmax = (1 << pf.bbits) - 1;
	57	pf.amask = pf.amax << pf.ashift;
	58	pf.rmask = pf.rmax << pf.rshift;
	59	pf.gmask = pf.gmax << pf.gshift;
	60	pf.bmask = pf.bmax << pf.bshift;
	61
	62	return pf;
	63	}
	64
1527a25e GH	65	pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
	66	{
	67	if (native_endian) {
	68	switch (bpp) {
	69	case 15:
	70	return PIXMAN_x1r5g5b5;
	71	case 16:
	72	return PIXMAN_r5g6b5;
	73	case 24:
	74	return PIXMAN_r8g8b8;
	75	case 32:
	76	return PIXMAN_x8r8g8b8;
	77	}
	78	} else {
	79	switch (bpp) {
	80	case 24:
	81	return PIXMAN_b8g8r8;
	82	case 32:
89ec031b	83	return PIXMAN_b8g8r8x8;
1527a25e GH	84	break;
	85	}
	86	}
aca7aaf6	87	return 0;
1527a25e GH	88	}
1527a25e GH	89
d2ec7e24 GH	90	int qemu_pixman_get_type(int rshift, int gshift, int bshift)
	91	{
	92	int type = PIXMAN_TYPE_OTHER;
	93
	94	if (rshift > gshift && gshift > bshift) {
	95	if (bshift == 0) {
	96	type = PIXMAN_TYPE_ARGB;
	97	} else {
	98	#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
	99	type = PIXMAN_TYPE_RGBA;
	100	#endif
	101	}
	102	} else if (rshift < gshift && gshift < bshift) {
	103	if (rshift == 0) {
	104	type = PIXMAN_TYPE_ABGR;
	105	} else {
fbddfc72	106	#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 16, 0)
d2ec7e24	107	type = PIXMAN_TYPE_BGRA;
6e72719e	108	#endif
d2ec7e24 GH	109	}
	110	}
	111	return type;
	112	}
	113
	114	pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
	115	{
	116	pixman_format_code_t format;
	117	int type;
	118
	119	type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
	120	format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
	121	pf->abits, pf->rbits, pf->gbits, pf->bbits);
	122	if (!pixman_format_supported_source(format)) {
	123	return 0;
	124	}
	125	return format;
	126	}
	127
8cd996f4 GH	128	/*
	129	* Return true for known-good pixman conversions.
	130	*
	131	* UIs using pixman for format conversion can hook this into
	132	* DisplayChangeListenerOps->dpy_gfx_check_format
	133	*/
	134	bool qemu_pixman_check_format(DisplayChangeListener *dcl,
	135	pixman_format_code_t format)
	136	{
	137	switch (format) {
	138	/* 32 bpp */
	139	case PIXMAN_x8r8g8b8:
	140	case PIXMAN_a8r8g8b8:
	141	case PIXMAN_b8g8r8x8:
	142	case PIXMAN_b8g8r8a8:
	143	/* 24 bpp */
	144	case PIXMAN_r8g8b8:
	145	case PIXMAN_b8g8r8:
	146	/* 16 bpp */
	147	case PIXMAN_x1r5g5b5:
	148	case PIXMAN_r5g6b5:
	149	return true;
	150	default:
	151	return false;
	152	}
	153	}
	154
d2ec7e24 GH	155	pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
	156	int width)
	157	{
	158	pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
	159	assert(image != NULL);
	160	return image;
	161	}
	162
43c7d8bd	163	/* fill linebuf from framebuffer */
d2ec7e24	164	void qemu_pixman_linebuf_fill(pixman_image_t linebuf, pixman_image_t fb,
bc210eb1	165	int width, int x, int y)
d2ec7e24 GH	166	{
d2ec7e24 GH	167	pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
bc210eb1	168	x, y, 0, 0, 0, 0, width, 1);
d2ec7e24 GH	169	}
d2ec7e24 GH	170
43c7d8bd GH	171	/* copy linebuf to framebuffer */
	172	void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
	173	pixman_image_t *linebuf)
	174	{
	175	pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
	176	0, 0, 0, 0, x, y, width, 1);
	177	}
	178
d9a86569 GH	179	pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
	180	pixman_image_t *image)
	181	{
	182	pixman_image_t *mirror;
	183
	184	mirror = pixman_image_create_bits(format,
	185	pixman_image_get_width(image),
	186	pixman_image_get_height(image),
	187	NULL,
	188	pixman_image_get_stride(image));
	189	return mirror;
	190	}
	191
d2ec7e24 GH	192	void qemu_pixman_image_unref(pixman_image_t *image)
	193	{
	194	if (image == NULL) {
	195	return;
	196	}
	197	pixman_image_unref(image);
	198	}
867c538f GH	199
	200	pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
	201	{
	202	pixman_color_t c;
	203
	204	c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
	205	c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
	206	c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
	207	c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
	208	return c;
	209	}
b7627952 GH	210
	211	pixman_image_t qemu_pixman_glyph_from_vgafont(int height, const uint8_t font,
	212	unsigned int ch)
	213	{
	214	pixman_image_t *glyph;
	215	uint8_t *data;
	216	bool bit;
	217	int x, y;
	218
	219	glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
	220	NULL, 0);
	221	data = (uint8_t *)pixman_image_get_data(glyph);
	222
	223	font += height * ch;
	224	for (y = 0; y < height; y++, font++) {
	225	for (x = 0; x < 8; x++, data++) {
	226	bit = (*font) & (1 << (7-x));
	227	*data = bit ? 0xff : 0x00;
	228	}
	229	}
	230	return glyph;
	231	}
	232
	233	void qemu_pixman_glyph_render(pixman_image_t *glyph,
	234	pixman_image_t *surface,
	235	pixman_color_t *fgcol,
	236	pixman_color_t *bgcol,
	237	int x, int y, int cw, int ch)
	238	{
	239	pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
	240	pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
	241
	242	pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
	243	0, 0, 0, 0,
	244	cw * x, ch * y,
	245	cw, ch);
	246	pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
	247	0, 0, 0, 0,
	248	cw * x, ch * y,
	249	cw, ch);
	250	pixman_image_unref(ifg);
	251	pixman_image_unref(ibg);
	252	}