gfx/ycbcr/yuv_row.h@97036ab72558 (annotated)
gfx/ycbcr/yuv_row.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | // yuv_row internal functions to handle YUV conversion and scaling to RGB. |
| michael@0 | 6 | // These functions are used from both yuv_convert.cc and yuv_scale.cc. |
| michael@0 | 7 | |
| michael@0 | 8 | // TODO(fbarchard): Write function that can handle rotation and scaling. |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef MEDIA_BASE_YUV_ROW_H_ |
| michael@0 | 11 | #define MEDIA_BASE_YUV_ROW_H_ |
| michael@0 | 12 | |
| michael@0 | 13 | #include "chromium_types.h" |
| michael@0 | 14 | |
| michael@0 | 15 | extern "C" { |
| michael@0 | 16 | // Can only do 1x. |
| michael@0 | 17 | // This is the second fastest of the scalers. |
| michael@0 | 18 | void FastConvertYUVToRGB32Row(const uint8* y_buf, |
| michael@0 | 19 | const uint8* u_buf, |
| michael@0 | 20 | const uint8* v_buf, |
| michael@0 | 21 | uint8* rgb_buf, |
| michael@0 | 22 | int width); |
| michael@0 | 23 | |
| michael@0 | 24 | void FastConvertYUVToRGB32Row_C(const uint8* y_buf, |
| michael@0 | 25 | const uint8* u_buf, |
| michael@0 | 26 | const uint8* v_buf, |
| michael@0 | 27 | uint8* rgb_buf, |
| michael@0 | 28 | int width, |
| michael@0 | 29 | unsigned int x_shift); |
| michael@0 | 30 | |
| michael@0 | 31 | void FastConvertYUVToRGB32Row(const uint8* y_buf, |
| michael@0 | 32 | const uint8* u_buf, |
| michael@0 | 33 | const uint8* v_buf, |
| michael@0 | 34 | uint8* rgb_buf, |
| michael@0 | 35 | int width); |
| michael@0 | 36 | |
| michael@0 | 37 | // Can do 1x, half size or any scale down by an integer amount. |
| michael@0 | 38 | // Step can be negative (mirroring, rotate 180). |
| michael@0 | 39 | // This is the third fastest of the scalers. |
| michael@0 | 40 | // Only defined on Windows x86-32. |
| michael@0 | 41 | void ConvertYUVToRGB32Row_SSE(const uint8* y_buf, |
| michael@0 | 42 | const uint8* u_buf, |
| michael@0 | 43 | const uint8* v_buf, |
| michael@0 | 44 | uint8* rgb_buf, |
| michael@0 | 45 | int width, |
| michael@0 | 46 | int step); |
| michael@0 | 47 | |
| michael@0 | 48 | // Rotate is like Convert, but applies different step to Y versus U and V. |
| michael@0 | 49 | // This allows rotation by 90 or 270, by stepping by stride. |
| michael@0 | 50 | // This is the forth fastest of the scalers. |
| michael@0 | 51 | // Only defined on Windows x86-32. |
| michael@0 | 52 | void RotateConvertYUVToRGB32Row_SSE(const uint8* y_buf, |
| michael@0 | 53 | const uint8* u_buf, |
| michael@0 | 54 | const uint8* v_buf, |
| michael@0 | 55 | uint8* rgb_buf, |
| michael@0 | 56 | int width, |
| michael@0 | 57 | int ystep, |
| michael@0 | 58 | int uvstep); |
| michael@0 | 59 | |
| michael@0 | 60 | // Doubler does 4 pixels at a time. Each pixel is replicated. |
| michael@0 | 61 | // This is the fastest of the scalers. |
| michael@0 | 62 | // Only defined on Windows x86-32. |
| michael@0 | 63 | void DoubleYUVToRGB32Row_SSE(const uint8* y_buf, |
| michael@0 | 64 | const uint8* u_buf, |
| michael@0 | 65 | const uint8* v_buf, |
| michael@0 | 66 | uint8* rgb_buf, |
| michael@0 | 67 | int width); |
| michael@0 | 68 | |
| michael@0 | 69 | // Handles arbitrary scaling up or down. |
| michael@0 | 70 | // Mirroring is supported, but not 90 or 270 degree rotation. |
| michael@0 | 71 | // Chroma is under sampled every 2 pixels for performance. |
| michael@0 | 72 | void ScaleYUVToRGB32Row(const uint8* y_buf, |
| michael@0 | 73 | const uint8* u_buf, |
| michael@0 | 74 | const uint8* v_buf, |
| michael@0 | 75 | uint8* rgb_buf, |
| michael@0 | 76 | int width, |
| michael@0 | 77 | int source_dx); |
| michael@0 | 78 | |
| michael@0 | 79 | void ScaleYUVToRGB32Row(const uint8* y_buf, |
| michael@0 | 80 | const uint8* u_buf, |
| michael@0 | 81 | const uint8* v_buf, |
| michael@0 | 82 | uint8* rgb_buf, |
| michael@0 | 83 | int width, |
| michael@0 | 84 | int source_dx); |
| michael@0 | 85 | |
| michael@0 | 86 | void ScaleYUVToRGB32Row_C(const uint8* y_buf, |
| michael@0 | 87 | const uint8* u_buf, |
| michael@0 | 88 | const uint8* v_buf, |
| michael@0 | 89 | uint8* rgb_buf, |
| michael@0 | 90 | int width, |
| michael@0 | 91 | int source_dx); |
| michael@0 | 92 | |
| michael@0 | 93 | // Handles arbitrary scaling up or down with bilinear filtering. |
| michael@0 | 94 | // Mirroring is supported, but not 90 or 270 degree rotation. |
| michael@0 | 95 | // Chroma is under sampled every 2 pixels for performance. |
| michael@0 | 96 | // This is the slowest of the scalers. |
| michael@0 | 97 | void LinearScaleYUVToRGB32Row(const uint8* y_buf, |
| michael@0 | 98 | const uint8* u_buf, |
| michael@0 | 99 | const uint8* v_buf, |
| michael@0 | 100 | uint8* rgb_buf, |
| michael@0 | 101 | int width, |
| michael@0 | 102 | int source_dx); |
| michael@0 | 103 | |
| michael@0 | 104 | void LinearScaleYUVToRGB32Row(const uint8* y_buf, |
| michael@0 | 105 | const uint8* u_buf, |
| michael@0 | 106 | const uint8* v_buf, |
| michael@0 | 107 | uint8* rgb_buf, |
| michael@0 | 108 | int width, |
| michael@0 | 109 | int source_dx); |
| michael@0 | 110 | |
| michael@0 | 111 | void LinearScaleYUVToRGB32Row_C(const uint8* y_buf, |
| michael@0 | 112 | const uint8* u_buf, |
| michael@0 | 113 | const uint8* v_buf, |
| michael@0 | 114 | uint8* rgb_buf, |
| michael@0 | 115 | int width, |
| michael@0 | 116 | int source_dx); |
| michael@0 | 117 | |
| michael@0 | 118 | |
| michael@0 | 119 | #if defined(_MSC_VER) |
| michael@0 | 120 | #define SIMD_ALIGNED(var) __declspec(align(16)) var |
| michael@0 | 121 | #else |
| michael@0 | 122 | #define SIMD_ALIGNED(var) var __attribute__((aligned(16))) |
| michael@0 | 123 | #endif |
| michael@0 | 124 | extern SIMD_ALIGNED(int16 kCoefficientsRgbY[768][4]); |
| michael@0 | 125 | |
| michael@0 | 126 | // x64 uses MMX2 (SSE) so emms is not required. |
| michael@0 | 127 | // Warning C4799: function has no EMMS instruction. |
| michael@0 | 128 | // EMMS() is slow and should be called by the calling function once per image. |
| michael@0 | 129 | #if defined(ARCH_CPU_X86) && !defined(ARCH_CPU_X86_64) |
| michael@0 | 130 | #if defined(_MSC_VER) |
| michael@0 | 131 | #define EMMS() __asm emms |
| michael@0 | 132 | #pragma warning(disable: 4799) |
| michael@0 | 133 | #else |
| michael@0 | 134 | #define EMMS() asm("emms") |
| michael@0 | 135 | #endif |
| michael@0 | 136 | #else |
| michael@0 | 137 | #define EMMS() ((void)0) |
| michael@0 | 138 | #endif |
| michael@0 | 139 | |
| michael@0 | 140 | } // extern "C" |
| michael@0 | 141 | |
| michael@0 | 142 | #endif // MEDIA_BASE_YUV_ROW_H_ |
