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add big endian platform support

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This commit is contained in:
kub 2021-02-22 22:25:03 +01:00
parent b053cb2044
commit 57c5a5e505
21 changed files with 224 additions and 178 deletions
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18
platform/common/plat_sdl.c
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@ -19,7 +19,7 @@
#include "plat_sdl.h"
#include "version.h"
#include <pico/pico.h>
#include <pico/pico_int.h>
static void *shadow_fb;
@ -73,7 +73,11 @@ void bgr_to_uyvy_init(void)
int r = (i >> 11) & 0x1f, g = (i >> 6) & 0x1f, b = (i >> 0) & 0x1f;
int y = (yuv_ry[r] + yuv_gy[g] + yuv_by[b]) >> 16;
yuv_uyvy[i].y = yuv_y[y];
#if CPU_IS_LE
yuv_uyvy[i].vyu = (yuv_v[r-y + 32] << 16) | (yuv_y[y] << 8) | yuv_u[b-y + 32];
#else
yuv_uyvy[i].vyu = (yuv_v[b-y + 32] << 16) | (yuv_y[y] << 8) | yuv_u[r-y + 32];
#endif
}
}
@ -87,17 +91,29 @@ void rgb565_to_uyvy(void *d, const void *s, int pixels, int x2)
{
struct uyvy *uyvy0 = yuv_uyvy + src[0], *uyvy1 = yuv_uyvy + src[1];
struct uyvy *uyvy2 = yuv_uyvy + src[2], *uyvy3 = yuv_uyvy + src[3];
#if CPU_IS_LE
dst[0] = (uyvy0->y << 24) | uyvy0->vyu;
dst[1] = (uyvy1->y << 24) | uyvy1->vyu;
dst[2] = (uyvy2->y << 24) | uyvy2->vyu;
dst[3] = (uyvy3->y << 24) | uyvy3->vyu;
#else
dst[0] = uyvy0->y | (uyvy0->vyu << 8);
dst[1] = uyvy1->y | (uyvy1->vyu << 8);
dst[2] = uyvy2->y | (uyvy2->vyu << 8);
dst[3] = uyvy3->y | (uyvy3->vyu << 8);
#endif
} else
for (; pixels > 0; src += 4, dst += 2, pixels -= 4)
{
struct uyvy *uyvy0 = yuv_uyvy + src[0], *uyvy1 = yuv_uyvy + src[1];
struct uyvy *uyvy2 = yuv_uyvy + src[2], *uyvy3 = yuv_uyvy + src[3];
#if CPU_IS_LE
dst[0] = (uyvy1->y << 24) | uyvy0->vyu;
dst[1] = (uyvy3->y << 24) | uyvy2->vyu;
#else
dst[0] = uyvy1->y | (uyvy0->vyu << 8);
dst[1] = uyvy3->y | (uyvy2->vyu << 8);
#endif
}
}