[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"
#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 PM	7	#include "qemu-common.h"
0b087861 PM	8	#include "ui/console.h"
a5127bd7	9	#include "standard-headers/drm/drm_fourcc.h"
d2ec7e24	10
a93a3af9 GH	11	PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format)
	12	{
	13	PixelFormat pf;
	14	uint8_t bpp;
	15
	16	bpp = pf.bits_per_pixel = PIXMAN_FORMAT_BPP(format);
	17	pf.bytes_per_pixel = PIXMAN_FORMAT_BPP(format) / 8;
	18	pf.depth = PIXMAN_FORMAT_DEPTH(format);
	19
	20	pf.abits = PIXMAN_FORMAT_A(format);
	21	pf.rbits = PIXMAN_FORMAT_R(format);
	22	pf.gbits = PIXMAN_FORMAT_G(format);
	23	pf.bbits = PIXMAN_FORMAT_B(format);
	24
	25	switch (PIXMAN_FORMAT_TYPE(format)) {
	26	case PIXMAN_TYPE_ARGB:
	27	pf.ashift = pf.bbits + pf.gbits + pf.rbits;
	28	pf.rshift = pf.bbits + pf.gbits;
	29	pf.gshift = pf.bbits;
	30	pf.bshift = 0;
	31	break;
	32	case PIXMAN_TYPE_ABGR:
	33	pf.ashift = pf.rbits + pf.gbits + pf.bbits;
	34	pf.bshift = pf.rbits + pf.gbits;
	35	pf.gshift = pf.rbits;
	36	pf.rshift = 0;
	37	break;
	38	case PIXMAN_TYPE_BGRA:
	39	pf.bshift = bpp - pf.bbits;
	40	pf.gshift = bpp - (pf.bbits + pf.gbits);
	41	pf.rshift = bpp - (pf.bbits + pf.gbits + pf.rbits);
	42	pf.ashift = 0;
	43	break;
	44	case PIXMAN_TYPE_RGBA:
	45	pf.rshift = bpp - pf.rbits;
	46	pf.gshift = bpp - (pf.rbits + pf.gbits);
	47	pf.bshift = bpp - (pf.rbits + pf.gbits + pf.bbits);
	48	pf.ashift = 0;
	49	break;
	50	default:
	51	g_assert_not_reached();
	52	break;
	53	}
	54
	55	pf.amax = (1 << pf.abits) - 1;
	56	pf.rmax = (1 << pf.rbits) - 1;
	57	pf.gmax = (1 << pf.gbits) - 1;
	58	pf.bmax = (1 << pf.bbits) - 1;
	59	pf.amask = pf.amax << pf.ashift;
	60	pf.rmask = pf.rmax << pf.rshift;
	61	pf.gmask = pf.gmax << pf.gshift;
	62	pf.bmask = pf.bmax << pf.bshift;
	63
	64	return pf;
	65	}
	66
1527a25e GH	67	pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian)
	68	{
	69	if (native_endian) {
	70	switch (bpp) {
	71	case 15:
	72	return PIXMAN_x1r5g5b5;
	73	case 16:
	74	return PIXMAN_r5g6b5;
	75	case 24:
	76	return PIXMAN_r8g8b8;
	77	case 32:
	78	return PIXMAN_x8r8g8b8;
	79	}
	80	} else {
	81	switch (bpp) {
	82	case 24:
	83	return PIXMAN_b8g8r8;
	84	case 32:
89ec031b	85	return PIXMAN_b8g8r8x8;
1527a25e GH	86	break;
	87	}
	88	}
aca7aaf6	89	return 0;
1527a25e GH	90	}
1527a25e GH	91
a5127bd7 GH	92	/* Note: drm is little endian, pixman is native endian */
	93	pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
	94	{
	95	static const struct {
	96	uint32_t drm_format;
	97	pixman_format_code_t pixman;
	98	} map[] = {
	99	{ DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
	100	{ DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
	101	{ DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
	102	};
	103	int i;
	104
	105	for (i = 0; i < ARRAY_SIZE(map); i++) {
	106	if (drm_format == map[i].drm_format) {
	107	return map[i].pixman;
	108	}
	109	}
	110	return 0;
	111	}
	112
d2ec7e24 GH	113	int qemu_pixman_get_type(int rshift, int gshift, int bshift)
	114	{
	115	int type = PIXMAN_TYPE_OTHER;
	116
	117	if (rshift > gshift && gshift > bshift) {
	118	if (bshift == 0) {
	119	type = PIXMAN_TYPE_ARGB;
	120	} else {
d2ec7e24	121	type = PIXMAN_TYPE_RGBA;
d2ec7e24 GH	122	}
	123	} else if (rshift < gshift && gshift < bshift) {
	124	if (rshift == 0) {
	125	type = PIXMAN_TYPE_ABGR;
	126	} else {
	127	type = PIXMAN_TYPE_BGRA;
	128	}
	129	}
	130	return type;
	131	}
	132
	133	pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
	134	{
	135	pixman_format_code_t format;
	136	int type;
	137
	138	type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
	139	format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
	140	pf->abits, pf->rbits, pf->gbits, pf->bbits);
	141	if (!pixman_format_supported_source(format)) {
	142	return 0;
	143	}
	144	return format;
	145	}
	146
8cd996f4 GH	147	/*
	148	* Return true for known-good pixman conversions.
	149	*
	150	* UIs using pixman for format conversion can hook this into
	151	* DisplayChangeListenerOps->dpy_gfx_check_format
	152	*/
	153	bool qemu_pixman_check_format(DisplayChangeListener *dcl,
	154	pixman_format_code_t format)
	155	{
	156	switch (format) {
	157	/* 32 bpp */
	158	case PIXMAN_x8r8g8b8:
	159	case PIXMAN_a8r8g8b8:
	160	case PIXMAN_b8g8r8x8:
	161	case PIXMAN_b8g8r8a8:
	162	/* 24 bpp */
	163	case PIXMAN_r8g8b8:
	164	case PIXMAN_b8g8r8:
	165	/* 16 bpp */
	166	case PIXMAN_x1r5g5b5:
	167	case PIXMAN_r5g6b5:
	168	return true;
	169	default:
	170	return false;
	171	}
	172	}
	173
d2ec7e24 GH	174	pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
	175	int width)
	176	{
	177	pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
	178	assert(image != NULL);
	179	return image;
	180	}
	181
43c7d8bd	182	/* fill linebuf from framebuffer */
d2ec7e24	183	void qemu_pixman_linebuf_fill(pixman_image_t linebuf, pixman_image_t fb,
bc210eb1	184	int width, int x, int y)
d2ec7e24 GH	185	{
d2ec7e24 GH	186	pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
bc210eb1	187	x, y, 0, 0, 0, 0, width, 1);
d2ec7e24 GH	188	}
d2ec7e24 GH	189
43c7d8bd GH	190	/* copy linebuf to framebuffer */
	191	void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
	192	pixman_image_t *linebuf)
	193	{
	194	pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
	195	0, 0, 0, 0, x, y, width, 1);
	196	}
	197
d9a86569 GH	198	pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
	199	pixman_image_t *image)
	200	{
9be38598 EH	201	return pixman_image_create_bits(format,
	202	pixman_image_get_width(image),
	203	pixman_image_get_height(image),
	204	NULL,
	205	pixman_image_get_stride(image));
d9a86569 GH	206	}
d9a86569 GH	207
d2ec7e24 GH	208	void qemu_pixman_image_unref(pixman_image_t *image)
	209	{
	210	if (image == NULL) {
	211	return;
	212	}
	213	pixman_image_unref(image);
	214	}
867c538f GH	215
	216	pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
	217	{
	218	pixman_color_t c;
	219
	220	c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
	221	c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
	222	c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
	223	c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
	224	return c;
	225	}
b7627952 GH	226
	227	pixman_image_t qemu_pixman_glyph_from_vgafont(int height, const uint8_t font,
	228	unsigned int ch)
	229	{
	230	pixman_image_t *glyph;
	231	uint8_t *data;
	232	bool bit;
	233	int x, y;
	234
	235	glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
	236	NULL, 0);
	237	data = (uint8_t *)pixman_image_get_data(glyph);
	238
	239	font += height * ch;
	240	for (y = 0; y < height; y++, font++) {
	241	for (x = 0; x < 8; x++, data++) {
	242	bit = (*font) & (1 << (7-x));
	243	*data = bit ? 0xff : 0x00;
	244	}
	245	}
	246	return glyph;
	247	}
	248
	249	void qemu_pixman_glyph_render(pixman_image_t *glyph,
	250	pixman_image_t *surface,
	251	pixman_color_t *fgcol,
	252	pixman_color_t *bgcol,
	253	int x, int y, int cw, int ch)
	254	{
	255	pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
	256	pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
	257
	258	pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
	259	0, 0, 0, 0,
	260	cw * x, ch * y,
	261	cw, ch);
	262	pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
	263	0, 0, 0, 0,
	264	cw * x, ch * y,
	265	cw, ch);
	266	pixman_image_unref(ifg);
	267	pixman_image_unref(ibg);
	268	}