/* * 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> #include <hardware/hardware.h> namespace android { static const int COMPONENT_YUV = 0xFF; size_t PixelFormatInfo::getScanlineSize(unsigned int width) const { size_t size; if (components == COMPONENT_YUV) { // YCbCr formats are different. size = (width * bitsPerPixel)>>3; } else { size = width * bytesPerPixel; } return size; } 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; // YUV format from the HAL are handled here switch (format) { case HAL_PIXEL_FORMAT_YCbCr_422_SP: case HAL_PIXEL_FORMAT_YCbCr_422_I: info->bitsPerPixel = 16; goto done; case HAL_PIXEL_FORMAT_YCrCb_420_SP: case HAL_PIXEL_FORMAT_YV12: info->bitsPerPixel = 12; done: info->format = format; info->components = COMPONENT_YUV; info->bytesPerPixel = 1; info->h_alpha = 0; info->l_alpha = 0; info->h_red = info->h_green = info->h_blue = 8; info->l_red = info->l_green = info->l_blue = 0; return NO_ERROR; } size_t numEntries; const GGLFormat *i = gglGetPixelFormatTable(&numEntries) + format; bool valid = uint32_t(format) < numEntries; if (!valid) { return BAD_INDEX; } #define COMPONENT(name) \ case GGL_##name: info->components = PixelFormatInfo::name; break; switch (i->components) { COMPONENT(ALPHA) COMPONENT(RGB) COMPONENT(RGBA) COMPONENT(LUMINANCE) COMPONENT(LUMINANCE_ALPHA) default: return BAD_INDEX; } #undef COMPONENT 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