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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ui/PixelFormat.h>
#include <pixelflinger/format.h>
namespace android {
ssize_t bytesPerPixel(PixelFormat format)
{
PixelFormatInfo info;
status_t err = getPixelFormatInfo(format, &info);
return (err < 0) ? err : info.bytesPerPixel;
}
ssize_t bitsPerPixel(PixelFormat format)
{
PixelFormatInfo info;
status_t err = getPixelFormatInfo(format, &info);
return (err < 0) ? err : info.bitsPerPixel;
}
status_t getPixelFormatInfo(PixelFormat format, PixelFormatInfo* info)
{
if (format < 0)
return BAD_VALUE;
if (info->version != sizeof(PixelFormatInfo))
return INVALID_OPERATION;
size_t numEntries;
const GGLFormat *i = gglGetPixelFormatTable(&numEntries) + format;
bool valid = uint32_t(format) < numEntries;
if (!valid) {
return BAD_INDEX;
}
info->format = format;
info->bytesPerPixel = i->size;
info->bitsPerPixel = i->bitsPerPixel;
info->h_alpha = i->ah;
info->l_alpha = i->al;
info->h_red = i->rh;
info->l_red = i->rl;
info->h_green = i->gh;
info->l_green = i->gl;
info->h_blue = i->bh;
info->l_blue = i->bl;
return NO_ERROR;
}
}; // namespace android
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