Commit a93a3af9 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

console: add qemu_pixelformat_from_pixman 



Function to convert pixman format codes to qemu PixelFormat.

[ Benjamin Herrenschmidt: fix BGRA+RGBA shifts ]

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent fd884c07

include/ui/qemu-pixman.h

+1 −0
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@@ -33,6 +33,7 @@ 


/* -------------------------------------------------------------------- */



PixelFormat qemu_pixelformat_from_pixman(pixman_format_code_t format);

int qemu_pixman_get_type(int rshift, int gshift, int bshift);

pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);

ui/qemu-pixman.c

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@@ -6,6 +6,62 @@ 
#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;

}



int qemu_pixman_get_type(int rshift, int gshift, int bshift)

{

    int type = PIXMAN_TYPE_OTHER;