LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

gralloc: Report YUV plane info

Browse Source 
The android_ycbcr structure in graphics.h is populated to give
the luma and chroma addresses. Use the same structure to give
this information to graphics via a gralloc perform call.

Change-Id: Ib42866a9ea90873886dcb60a1aac6cb375292642
This commit is contained in:
Naseer Ahmed
2014-04-08 20:23:47 -04:00
committed by Gerrit - the friendly Code Review server
parent 32166191ac
commit b29fdfdd84
4 changed files with 78 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
libgralloc/alloc_controller.cpp
View File

@@ -547,6 +547,71 @@ void getBufferAttributes(int width, int height, int format, int usage,
size = getSize(format, width, height, alignedw, alignedh);
}
int getYUVPlaneInfo(private_handle_t* hnd, struct android_ycbcr* ycbcr)
{
int err = 0;
size_t ystride, cstride;
memset(ycbcr->reserved, 0, sizeof(ycbcr->reserved));
// Get the chroma offsets from the handle width/height. We take advantage
// of the fact the width _is_ the stride
switch (hnd->format) {
//Semiplanar
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
case HAL_PIXEL_FORMAT_YCbCr_422_SP:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: //Same as YCbCr_420_SP_VENUS
ystride = hnd->width;
cstride = hnd->width/2;
ycbcr->y = (void*)hnd->base;
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height + 1);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 2;
break;
case HAL_PIXEL_FORMAT_YCrCb_420_SP:
case HAL_PIXEL_FORMAT_YCrCb_422_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
case HAL_PIXEL_FORMAT_NV21_ZSL:
case HAL_PIXEL_FORMAT_RAW_SENSOR:
ystride = hnd->width;
cstride = hnd->width/2;
ycbcr->y = (void*)hnd->base;
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height + 1);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 2;
break;
//Planar
case HAL_PIXEL_FORMAT_YV12:
ystride = hnd->width;
cstride = hnd->width/2;
ycbcr->y = (void*)hnd->base;
ycbcr->cr = (void*)(hnd->base + ystride * hnd->height);
ycbcr->cb = (void*)(hnd->base + ystride * hnd->height +
cstride * hnd->height/2);
ycbcr->ystride = ystride;
ycbcr->cstride = cstride;
ycbcr->chroma_step = 1;
break;
//Unsupported formats
case HAL_PIXEL_FORMAT_YCbCr_422_I:
case HAL_PIXEL_FORMAT_YCrCb_422_I:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
default:
ALOGD("%s: Invalid format passed: 0x%x", __FUNCTION__,
hnd->format);
err = -EINVAL;
}
return err;
}
// Allocate buffer from width, height and format into a