[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 "ui/console.h"
#include "standard-headers/drm/drm_fourcc.h"
#include "trace.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 */
static const struct {
    uint32_t drm_format;
    pixman_format_code_t pixman_format;
} drm_format_pixman_map[] = {
    { DRM_FORMAT_RGB888,   PIXMAN_LE_r8g8b8   },
    { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
    { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
};

pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
        if (drm_format == drm_format_pixman_map[i].drm_format) {
            return drm_format_pixman_map[i].pixman_format;
        }
    }
    return 0;
}

uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
        if (pixman_format == drm_format_pixman_map[i].pixman_format) {
            return drm_format_pixman_map[i].drm_format;
        }
    }
    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"
09b4c198	9	#include "trace.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:
7d37435b	39	pf.bshift = bpp - pf.bbits;
a93a3af9 GH	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	92	/* Note: drm is little endian, pixman is native endian */
8069b73b VK	93	static const struct {
	94	uint32_t drm_format;
	95	pixman_format_code_t pixman_format;
	96	} drm_format_pixman_map[] = {
	97	{ DRM_FORMAT_RGB888, PIXMAN_LE_r8g8b8 },
	98	{ DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
	99	{ DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
	100	};
	101
a5127bd7 GH	102	pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
a5127bd7 GH	103	{
a5127bd7 GH	104	int i;
a5127bd7 GH	105
8069b73b VK	106	for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
	107	if (drm_format == drm_format_pixman_map[i].drm_format) {
	108	return drm_format_pixman_map[i].pixman_format;
	109	}
	110	}
	111	return 0;
	112	}
	113
	114	uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman_format)
	115	{
	116	int i;
	117
	118	for (i = 0; i < ARRAY_SIZE(drm_format_pixman_map); i++) {
	119	if (pixman_format == drm_format_pixman_map[i].pixman_format) {
	120	return drm_format_pixman_map[i].drm_format;
a5127bd7 GH	121	}
	122	}
	123	return 0;
	124	}
	125
d2ec7e24 GH	126	int qemu_pixman_get_type(int rshift, int gshift, int bshift)
	127	{
	128	int type = PIXMAN_TYPE_OTHER;
	129
	130	if (rshift > gshift && gshift > bshift) {
	131	if (bshift == 0) {
	132	type = PIXMAN_TYPE_ARGB;
	133	} else {
d2ec7e24	134	type = PIXMAN_TYPE_RGBA;
d2ec7e24 GH	135	}
	136	} else if (rshift < gshift && gshift < bshift) {
	137	if (rshift == 0) {
	138	type = PIXMAN_TYPE_ABGR;
	139	} else {
	140	type = PIXMAN_TYPE_BGRA;
	141	}
	142	}
	143	return type;
	144	}
	145
	146	pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
	147	{
	148	pixman_format_code_t format;
	149	int type;
	150
	151	type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
	152	format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
	153	pf->abits, pf->rbits, pf->gbits, pf->bbits);
	154	if (!pixman_format_supported_source(format)) {
	155	return 0;
	156	}
	157	return format;
	158	}
	159
8cd996f4 GH	160	/*
	161	* Return true for known-good pixman conversions.
	162	*
	163	* UIs using pixman for format conversion can hook this into
	164	* DisplayChangeListenerOps->dpy_gfx_check_format
	165	*/
	166	bool qemu_pixman_check_format(DisplayChangeListener *dcl,
	167	pixman_format_code_t format)
	168	{
	169	switch (format) {
	170	/* 32 bpp */
	171	case PIXMAN_x8r8g8b8:
	172	case PIXMAN_a8r8g8b8:
	173	case PIXMAN_b8g8r8x8:
	174	case PIXMAN_b8g8r8a8:
	175	/* 24 bpp */
	176	case PIXMAN_r8g8b8:
	177	case PIXMAN_b8g8r8:
	178	/* 16 bpp */
	179	case PIXMAN_x1r5g5b5:
	180	case PIXMAN_r5g6b5:
	181	return true;
	182	default:
	183	return false;
	184	}
	185	}
	186
d2ec7e24 GH	187	pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
	188	int width)
	189	{
	190	pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL, 0);
	191	assert(image != NULL);
	192	return image;
	193	}
	194
43c7d8bd	195	/* fill linebuf from framebuffer */
d2ec7e24	196	void qemu_pixman_linebuf_fill(pixman_image_t linebuf, pixman_image_t fb,
bc210eb1	197	int width, int x, int y)
d2ec7e24 GH	198	{
d2ec7e24 GH	199	pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
bc210eb1	200	x, y, 0, 0, 0, 0, width, 1);
d2ec7e24 GH	201	}
d2ec7e24 GH	202
43c7d8bd GH	203	/* copy linebuf to framebuffer */
	204	void qemu_pixman_linebuf_copy(pixman_image_t *fb, int width, int x, int y,
	205	pixman_image_t *linebuf)
	206	{
	207	pixman_image_composite(PIXMAN_OP_SRC, linebuf, NULL, fb,
	208	0, 0, 0, 0, x, y, width, 1);
	209	}
	210
d9a86569 GH	211	pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
	212	pixman_image_t *image)
	213	{
9be38598 EH	214	return pixman_image_create_bits(format,
	215	pixman_image_get_width(image),
	216	pixman_image_get_height(image),
	217	NULL,
	218	pixman_image_get_stride(image));
d9a86569 GH	219	}
d9a86569 GH	220
d2ec7e24 GH	221	void qemu_pixman_image_unref(pixman_image_t *image)
	222	{
	223	if (image == NULL) {
	224	return;
	225	}
	226	pixman_image_unref(image);
	227	}
867c538f GH	228
	229	pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
	230	{
	231	pixman_color_t c;
	232
	233	c.red = ((color & pf->rmask) >> pf->rshift) << (16 - pf->rbits);
	234	c.green = ((color & pf->gmask) >> pf->gshift) << (16 - pf->gbits);
	235	c.blue = ((color & pf->bmask) >> pf->bshift) << (16 - pf->bbits);
	236	c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
	237	return c;
	238	}
b7627952 GH	239
	240	pixman_image_t qemu_pixman_glyph_from_vgafont(int height, const uint8_t font,
	241	unsigned int ch)
	242	{
	243	pixman_image_t *glyph;
	244	uint8_t *data;
	245	bool bit;
	246	int x, y;
	247
	248	glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
	249	NULL, 0);
	250	data = (uint8_t *)pixman_image_get_data(glyph);
	251
	252	font += height * ch;
	253	for (y = 0; y < height; y++, font++) {
	254	for (x = 0; x < 8; x++, data++) {
	255	bit = (*font) & (1 << (7-x));
	256	*data = bit ? 0xff : 0x00;
	257	}
	258	}
	259	return glyph;
	260	}
	261
	262	void qemu_pixman_glyph_render(pixman_image_t *glyph,
	263	pixman_image_t *surface,
	264	pixman_color_t *fgcol,
	265	pixman_color_t *bgcol,
	266	int x, int y, int cw, int ch)
	267	{
	268	pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
	269	pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
	270
	271	pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
	272	0, 0, 0, 0,
	273	cw * x, ch * y,
	274	cw, ch);
	275	pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
	276	0, 0, 0, 0,
	277	cw * x, ch * y,
	278	cw, ch);
	279	pixman_image_unref(ifg);
	280	pixman_image_unref(ibg);
	281	}