michael@0: // Copyright (c) 2010 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: // yuv_row internal functions to handle YUV conversion and scaling to RGB.
michael@0: // These functions are used from both yuv_convert.cc and yuv_scale.cc.
michael@0: 
michael@0: // TODO(fbarchard): Write function that can handle rotation and scaling.
michael@0: 
michael@0: #ifndef MEDIA_BASE_YUV_ROW_H_
michael@0: #define MEDIA_BASE_YUV_ROW_H_
michael@0: 
michael@0: #include "chromium_types.h"
michael@0: 
michael@0: extern "C" {
michael@0: // Can only do 1x.
michael@0: // This is the second fastest of the scalers.
michael@0: void FastConvertYUVToRGB32Row(const uint8* y_buf,
michael@0:                               const uint8* u_buf,
michael@0:                               const uint8* v_buf,
michael@0:                               uint8* rgb_buf,
michael@0:                               int width);
michael@0: 
michael@0: void FastConvertYUVToRGB32Row_C(const uint8* y_buf,
michael@0:                                 const uint8* u_buf,
michael@0:                                 const uint8* v_buf,
michael@0:                                 uint8* rgb_buf,
michael@0:                                 int width,
michael@0:                                 unsigned int x_shift);
michael@0: 
michael@0: void FastConvertYUVToRGB32Row(const uint8* y_buf,
michael@0:                               const uint8* u_buf,
michael@0:                               const uint8* v_buf,
michael@0:                               uint8* rgb_buf,
michael@0:                               int width);
michael@0: 
michael@0: // Can do 1x, half size or any scale down by an integer amount.
michael@0: // Step can be negative (mirroring, rotate 180).
michael@0: // This is the third fastest of the scalers.
michael@0: // Only defined on Windows x86-32.
michael@0: void ConvertYUVToRGB32Row_SSE(const uint8* y_buf,
michael@0:                               const uint8* u_buf,
michael@0:                               const uint8* v_buf,
michael@0:                               uint8* rgb_buf,
michael@0:                               int width,
michael@0:                               int step);
michael@0: 
michael@0: // Rotate is like Convert, but applies different step to Y versus U and V.
michael@0: // This allows rotation by 90 or 270, by stepping by stride.
michael@0: // This is the forth fastest of the scalers.
michael@0: // Only defined on Windows x86-32.
michael@0: void RotateConvertYUVToRGB32Row_SSE(const uint8* y_buf,
michael@0:                                     const uint8* u_buf,
michael@0:                                     const uint8* v_buf,
michael@0:                                     uint8* rgb_buf,
michael@0:                                     int width,
michael@0:                                     int ystep,
michael@0:                                     int uvstep);
michael@0: 
michael@0: // Doubler does 4 pixels at a time.  Each pixel is replicated.
michael@0: // This is the fastest of the scalers.
michael@0: // Only defined on Windows x86-32.
michael@0: void DoubleYUVToRGB32Row_SSE(const uint8* y_buf,
michael@0:                              const uint8* u_buf,
michael@0:                              const uint8* v_buf,
michael@0:                              uint8* rgb_buf,
michael@0:                              int width);
michael@0: 
michael@0: // Handles arbitrary scaling up or down.
michael@0: // Mirroring is supported, but not 90 or 270 degree rotation.
michael@0: // Chroma is under sampled every 2 pixels for performance.
michael@0: void ScaleYUVToRGB32Row(const uint8* y_buf,
michael@0:                         const uint8* u_buf,
michael@0:                         const uint8* v_buf,
michael@0:                         uint8* rgb_buf,
michael@0:                         int width,
michael@0:                         int source_dx);
michael@0: 
michael@0: void ScaleYUVToRGB32Row(const uint8* y_buf,
michael@0:                         const uint8* u_buf,
michael@0:                         const uint8* v_buf,
michael@0:                         uint8* rgb_buf,
michael@0:                         int width,
michael@0:                         int source_dx);
michael@0: 
michael@0: void ScaleYUVToRGB32Row_C(const uint8* y_buf,
michael@0:                           const uint8* u_buf,
michael@0:                           const uint8* v_buf,
michael@0:                           uint8* rgb_buf,
michael@0:                           int width,
michael@0:                           int source_dx);
michael@0: 
michael@0: // Handles arbitrary scaling up or down with bilinear filtering.
michael@0: // Mirroring is supported, but not 90 or 270 degree rotation.
michael@0: // Chroma is under sampled every 2 pixels for performance.
michael@0: // This is the slowest of the scalers.
michael@0: void LinearScaleYUVToRGB32Row(const uint8* y_buf,
michael@0:                               const uint8* u_buf,
michael@0:                               const uint8* v_buf,
michael@0:                               uint8* rgb_buf,
michael@0:                               int width,
michael@0:                               int source_dx);
michael@0: 
michael@0: void LinearScaleYUVToRGB32Row(const uint8* y_buf,
michael@0:                               const uint8* u_buf,
michael@0:                               const uint8* v_buf,
michael@0:                               uint8* rgb_buf,
michael@0:                               int width,
michael@0:                               int source_dx);
michael@0: 
michael@0: void LinearScaleYUVToRGB32Row_C(const uint8* y_buf,
michael@0:                                 const uint8* u_buf,
michael@0:                                 const uint8* v_buf,
michael@0:                                 uint8* rgb_buf,
michael@0:                                 int width,
michael@0:                                 int source_dx);
michael@0: 
michael@0: 
michael@0: #if defined(_MSC_VER)
michael@0: #define SIMD_ALIGNED(var) __declspec(align(16)) var
michael@0: #else
michael@0: #define SIMD_ALIGNED(var) var __attribute__((aligned(16)))
michael@0: #endif
michael@0: extern SIMD_ALIGNED(int16 kCoefficientsRgbY[768][4]);
michael@0: 
michael@0: // x64 uses MMX2 (SSE) so emms is not required.
michael@0: // Warning C4799: function has no EMMS instruction.
michael@0: // EMMS() is slow and should be called by the calling function once per image.
michael@0: #if defined(ARCH_CPU_X86) && !defined(ARCH_CPU_X86_64)
michael@0: #if defined(_MSC_VER)
michael@0: #define EMMS() __asm emms
michael@0: #pragma warning(disable: 4799)
michael@0: #else
michael@0: #define EMMS() asm("emms")
michael@0: #endif
michael@0: #else
michael@0: #define EMMS() ((void)0)
michael@0: #endif
michael@0: 
michael@0: }  // extern "C"
michael@0: 
michael@0: #endif  // MEDIA_BASE_YUV_ROW_H_