/* * Copyright (C) 2011 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. */ /* * Contains implemenation of framebuffer conversion routines. */ #define LOG_NDEBUG 0 #define LOG_TAG "EmulatedCamera_Converter" #include #include "Converters.h" namespace android { static void _YUV420SToRGB565(const uint8_t* Y, const uint8_t* U, const uint8_t* V, int dUV, uint16_t* rgb, int width, int height) { const uint8_t* U_pos = U; const uint8_t* V_pos = V; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x += 2, U += dUV, V += dUV) { const uint8_t nU = *U; const uint8_t nV = *V; *rgb = YUVToRGB565(*Y, nU, nV); Y++; rgb++; *rgb = YUVToRGB565(*Y, nU, nV); Y++; rgb++; } if (y & 0x1) { U_pos = U; V_pos = V; } else { U = U_pos; V = V_pos; } } } static void _YUV420SToRGB32(const uint8_t* Y, const uint8_t* U, const uint8_t* V, int dUV, uint32_t* rgb, int width, int height) { const uint8_t* U_pos = U; const uint8_t* V_pos = V; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x += 2, U += dUV, V += dUV) { const uint8_t nU = *U; const uint8_t nV = *V; *rgb = YUVToRGB32(*Y, nU, nV); Y++; rgb++; *rgb = YUVToRGB32(*Y, nU, nV); Y++; rgb++; } if (y & 0x1) { U_pos = U; V_pos = V; } else { U = U_pos; V = V_pos; } } } void YV12ToRGB565(const void* yv12, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* Y = reinterpret_cast(yv12); const uint8_t* U = Y + pix_total; const uint8_t* V = U + pix_total / 4; _YUV420SToRGB565(Y, U, V, 1, reinterpret_cast(rgb), width, height); } void YV12ToRGB32(const void* yv12, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* Y = reinterpret_cast(yv12); const uint8_t* V = Y + pix_total; const uint8_t* U = V + pix_total / 4; _YUV420SToRGB32(Y, U, V, 1, reinterpret_cast(rgb), width, height); } void YU12ToRGB32(const void* yu12, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* Y = reinterpret_cast(yu12); const uint8_t* U = Y + pix_total; const uint8_t* V = U + pix_total / 4; _YUV420SToRGB32(Y, U, V, 1, reinterpret_cast(rgb), width, height); } /* Common converter for YUV 4:2:0 interleaved to RGB565. * y, u, and v point to Y,U, and V panes, where U and V values are interleaved. */ static void _NVXXToRGB565(const uint8_t* Y, const uint8_t* U, const uint8_t* V, uint16_t* rgb, int width, int height) { _YUV420SToRGB565(Y, U, V, 2, rgb, width, height); } /* Common converter for YUV 4:2:0 interleaved to RGB32. * y, u, and v point to Y,U, and V panes, where U and V values are interleaved. */ static void _NVXXToRGB32(const uint8_t* Y, const uint8_t* U, const uint8_t* V, uint32_t* rgb, int width, int height) { _YUV420SToRGB32(Y, U, V, 2, rgb, width, height); } void NV12ToRGB565(const void* nv12, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* y = reinterpret_cast(nv12); _NVXXToRGB565(y, y + pix_total, y + pix_total + 1, reinterpret_cast(rgb), width, height); } void NV12ToRGB32(const void* nv12, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* y = reinterpret_cast(nv12); _NVXXToRGB32(y, y + pix_total, y + pix_total + 1, reinterpret_cast(rgb), width, height); } void NV21ToRGB565(const void* nv21, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* y = reinterpret_cast(nv21); _NVXXToRGB565(y, y + pix_total + 1, y + pix_total, reinterpret_cast(rgb), width, height); } void NV21ToRGB32(const void* nv21, void* rgb, int width, int height) { const int pix_total = width * height; const uint8_t* y = reinterpret_cast(nv21); _NVXXToRGB32(y, y + pix_total + 1, y + pix_total, reinterpret_cast(rgb), width, height); } }; /* namespace android */