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Merge "gralloc: Support HAL_PIXEL_FORMAT_YCrCb_420_SP (NV21)"

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Eino-Ville Talvala
2012-07-16 14:26:44 -07:00
committed by Android (Google) Code Review
parent f0aa9b50db 3461561ccf
commit bd1c139a5c
1 changed files with 15 additions and 3 deletions
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12
tools/emulator/opengl/system/gralloc/gralloc.cpp
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@@ -145,6 +145,7 @@ static int gralloc_alloc(alloc_device_t* dev,
return -EINVAL;
}
bool sw_read = (0 != (usage & GRALLOC_USAGE_SW_READ_MASK));
bool yuv_format = false;
int ashmem_size = 0;
int stride = w;
@@ -203,6 +204,11 @@ static int gralloc_alloc(alloc_device_t* dev,
glFormat = GL_LUMINANCE;
glType = GL_UNSIGNED_BYTE;
break;
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
bpp = 0; // Chroma-subsampled format has fractional bpp
yuv_format = true;
// Not expecting to actually create any GL surfaces for this
break;
default:
return -EINVAL;
}
@@ -215,10 +221,16 @@ static int gralloc_alloc(alloc_device_t* dev,
if (sw_read || sw_write) {
// keep space for image on guest memory if SW access is needed
if (yuv_format) {
// For NV21
ashmem_size += w * h * 3 / 2;
stride = w;
} else {
size_t bpr = (w*bpp + (align-1)) & ~(align-1);
ashmem_size += (bpr * h);
stride = bpr / bpp;
}
}
D("gralloc_alloc ashmem_size=%d, stride=%d, tid %d\n", ashmem_size, stride,
gettid());