[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 "ui/console.h"
#include "standard-headers/drm/drm_fourcc.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;
}

/* Note: drm is little endian, pixman is native endian */
pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
{
    static const struct {
        uint32_t drm_format;
        pixman_format_code_t pixman;
    } map[] = {
        { DRM_FORMAT_RGB888,   PIXMAN_LE_r8g8b8   },
        { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
        { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
    };
    int i;

    for (i = 0; i < ARRAY_SIZE(map); i++) {
        if (drm_format == map[i].drm_format) {
            return map[i].pixman;
        }
    }
    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	7	#include "ui/console.h"
a5127bd7	8	#include "standard-headers/drm/drm_fourcc.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:
7d37435b	38	pf.bshift = bpp - pf.bbits;
a93a3af9 GH	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
a5127bd7 GH	91	/* Note: drm is little endian, pixman is native endian */
	92	pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
	93	{
	94	static const struct {
	95	uint32_t drm_format;
	96	pixman_format_code_t pixman;
	97	} map[] = {
	98	{ DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
	99	{ DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
	100	{ DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
	101	};
	102	int i;
	103
	104	for (i = 0; i < ARRAY_SIZE(map); i++) {
	105	if (drm_format == map[i].drm_format) {
	106	return map[i].pixman;
	107	}
	108	}
	109	return 0;
	110	}
	111
d2ec7e24 GH	112	int qemu_pixman_get_type(int rshift, int gshift, int bshift)
	113	{
	114	int type = PIXMAN_TYPE_OTHER;
	115
	116	if (rshift > gshift && gshift > bshift) {
	117	if (bshift == 0) {
	118	type = PIXMAN_TYPE_ARGB;
	119	} else {
d2ec7e24	120	type = PIXMAN_TYPE_RGBA;
d2ec7e24 GH	121	}
	122	} else if (rshift < gshift && gshift < bshift) {
	123	if (rshift == 0) {
	124	type = PIXMAN_TYPE_ABGR;
	125	} else {
	126	type = PIXMAN_TYPE_BGRA;
	127	}
	128	}
	129	return type;
	130	}
	131
	132	pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
	133	{
	134	pixman_format_code_t format;
	135	int type;
	136
	137	type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
	138	format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
	139	pf->abits, pf->rbits, pf->gbits, pf->bbits);
	140	if (!pixman_format_supported_source(format)) {
	141	return 0;
	142	}
	143	return format;
	144	}
	145
8cd996f4 GH	146	/*
	147	* Return true for known-good pixman conversions.
	148	*
	149	* UIs using pixman for format conversion can hook this into
	150	* DisplayChangeListenerOps->dpy_gfx_check_format
	151	*/
	152	bool qemu_pixman_check_format(DisplayChangeListener *dcl,
	153	pixman_format_code_t format)
	154	{
	155	switch (format) {
	156	/* 32 bpp */
	157	case PIXMAN_x8r8g8b8:
	158	case PIXMAN_a8r8g8b8:
	159	case PIXMAN_b8g8r8x8:
	160	case PIXMAN_b8g8r8a8:
	161	/* 24 bpp */
	162	case PIXMAN_r8g8b8:
	163	case PIXMAN_b8g8r8:
	164	/* 16 bpp */
	165	case PIXMAN_x1r5g5b5:
	166	case PIXMAN_r5g6b5:
	167	return true;
	168	default:
	169	return false;
	170	}
	171	}
	172
d2ec7e24 GH	173	pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
	174	int width)
	175	{
	176	pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
	177	assert(image != NULL);
	178	return image;
	179	}
	180
43c7d8bd	181	/* fill linebuf from framebuffer */
d2ec7e24	182	void qemu_pixman_linebuf_fill(pixman_image_t linebuf, pixman_image_t fb,
bc210eb1	183	int width, int x, int y)
d2ec7e24 GH	184	{
d2ec7e24 GH	185	pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
bc210eb1	186	x, y, 0, 0, 0, 0, width, 1);
d2ec7e24 GH	187	}
d2ec7e24 GH	188
43c7d8bd GH	189	/* copy linebuf to framebuffer */
	190	void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
	191	pixman_image_t *linebuf)
	192	{
	193	pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
	194	0, 0, 0, 0, x, y, width, 1);
	195	}
	196
d9a86569 GH	197	pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
	198	pixman_image_t *image)
	199	{
9be38598 EH	200	return pixman_image_create_bits(format,
	201	pixman_image_get_width(image),
	202	pixman_image_get_height(image),
	203	NULL,
	204	pixman_image_get_stride(image));
d9a86569 GH	205	}
d9a86569 GH	206
d2ec7e24 GH	207	void qemu_pixman_image_unref(pixman_image_t *image)
	208	{
	209	if (image == NULL) {
	210	return;
	211	}
	212	pixman_image_unref(image);
	213	}
867c538f GH	214
	215	pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
	216	{
	217	pixman_color_t c;
	218
	219	c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
	220	c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
	221	c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
	222	c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
	223	return c;
	224	}
b7627952 GH	225
	226	pixman_image_t qemu_pixman_glyph_from_vgafont(int height, const uint8_t font,
	227	unsigned int ch)
	228	{
	229	pixman_image_t *glyph;
	230	uint8_t *data;
	231	bool bit;
	232	int x, y;
	233
	234	glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
	235	NULL, 0);
	236	data = (uint8_t *)pixman_image_get_data(glyph);
	237
	238	font += height * ch;
	239	for (y = 0; y < height; y++, font++) {
	240	for (x = 0; x < 8; x++, data++) {
	241	bit = (*font) & (1 << (7-x));
	242	*data = bit ? 0xff : 0x00;
	243	}
	244	}
	245	return glyph;
	246	}
	247
	248	void qemu_pixman_glyph_render(pixman_image_t *glyph,
	249	pixman_image_t *surface,
	250	pixman_color_t *fgcol,
	251	pixman_color_t *bgcol,
	252	int x, int y, int cw, int ch)
	253	{
	254	pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
	255	pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
	256
	257	pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
	258	0, 0, 0, 0,
	259	cw * x, ch * y,
	260	cw, ch);
	261	pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
	262	0, 0, 0, 0,
	263	cw * x, ch * y,
	264	cw, ch);
	265	pixman_image_unref(ifg);
	266	pixman_image_unref(ibg);
	267	}