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Emulator gralloc: Support YV12

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Bug: 6243944
Change-Id: I5f416ab0ae15143df422c0f79d91841984b4fabe
This commit is contained in:
Eino-Ville Talvala
2012-08-17 09:48:15 -07:00
parent 77201b5414
commit 34a4d2d519
1 changed files with 13 additions and 4 deletions
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17
tools/emulator/opengl/system/gralloc/gralloc.cpp
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@@ -236,7 +236,14 @@ static int gralloc_alloc(alloc_device_t* dev,
glType = GL_UNSIGNED_BYTE;
break;
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
bpp = 0; // Chroma-subsampled format has fractional bpp
align = 1;
bpp = 1; // per-channel bpp
yuv_format = true;
// Not expecting to actually create any GL surfaces for this
break;
case HAL_PIXEL_FORMAT_YV12:
align = 16;
bpp = 1; // per-channel bpp
yuv_format = true;
// Not expecting to actually create any GL surfaces for this
break;
@@ -254,9 +261,11 @@ static int gralloc_alloc(alloc_device_t* dev,
// keep space for image on guest memory if SW access is needed
// or if the camera is doing writing
if (yuv_format) {
// For NV21
ashmem_size += w * h * 3 / 2;
stride = w;
size_t yStride = (w*bpp + (align - 1)) & ~(align-1);
size_t uvStride = (yStride / 2 + (align - 1)) & ~(align-1);
size_t uvHeight = h / 2;
ashmem_size += yStride * h + 2 * (uvHeight * uvStride);
stride = yStride / bpp;
} else {
size_t bpr = (w*bpp + (align-1)) & ~(align-1);
ashmem_size += (bpr * h);