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add support for YUV formats

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This commit is contained in:
Mathias Agopian 2009-06-25 17:38:50 -07:00
parent 689fa73c06
commit 8bf1f75268
1 changed files with 38 additions and 18 deletions
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56
modules/gralloc/gralloc.cpp
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@ -294,32 +294,52 @@ static int gralloc_alloc(alloc_device_t* dev,
if (!pHandle || !pStride)
return -EINVAL;
int align = 4;
int bpp = 0;
switch (format) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
bpp = 4;
break;
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_RGBA_5551:
case HAL_PIXEL_FORMAT_RGBA_4444:
bpp = 2;
break;
default:
return -EINVAL;
size_t size, stride;
if (format == HAL_PIXEL_FORMAT_YCbCr_420_SP ||
format == HAL_PIXEL_FORMAT_YCbCr_422_SP)
{
// FIXME: there is no way to return the vstride
int vstride;
stride = (w + 1) & ~1;
switch (format) {
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
size = stride * h * 2;
break;
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
vstride = (h+1) & ~1;
size = (stride * vstride) + (w/2 * h/2) * 2;
break;
default:
return -EINVAL;
}
} else {
int align = 4;
int bpp = 0;
switch (format) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
bpp = 4;
break;
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_RGBA_5551:
case HAL_PIXEL_FORMAT_RGBA_4444:
bpp = 2;
break;
default:
return -EINVAL;
}
size_t bpr = (w*bpp + (align-1)) & ~(align-1);
size = bpr * h;
stride = bpr / bpp;
}
size_t bpr = (w*bpp + (align-1)) & ~(align-1);
size_t size = bpr * h;
size_t stride = bpr / bpp;
int err;
if (usage & GRALLOC_USAGE_HW_FB) {
err = gralloc_alloc_framebuffer(dev, size, usage, pHandle);
} else {
err = gralloc_alloc_buffer(dev, size, usage, pHandle);
}
if (err < 0) {
return err;
}