1 | /* The copyright in this software is being made available under the BSD |
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2 | * License, included below. This software may be subject to other third party |
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3 | * and contributor rights, including patent rights, and no such rights are |
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4 | * granted under this license. |
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5 | * |
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6 | * Copyright (c) 2010-2015, ITU/ISO/IEC |
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7 | * All rights reserved. |
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8 | * |
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9 | * Redistribution and use in source and binary forms, with or without |
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10 | * modification, are permitted provided that the following conditions are met: |
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11 | * |
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12 | * * Redistributions of source code must retain the above copyright notice, |
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13 | * this list of conditions and the following disclaimer. |
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14 | * * Redistributions in binary form must reproduce the above copyright notice, |
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15 | * this list of conditions and the following disclaimer in the documentation |
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16 | * and/or other materials provided with the distribution. |
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17 | * * Neither the name of the ITU/ISO/IEC nor the names of its contributors may |
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18 | * be used to endorse or promote products derived from this software without |
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19 | * specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS |
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25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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31 | * THE POSSIBILITY OF SUCH DAMAGE. |
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32 | */ |
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33 | |
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34 | /** \file TVideoIOYuv.cpp |
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35 | \brief YUV file I/O class |
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36 | */ |
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37 | |
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38 | #include <cstdlib> |
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39 | #include <fcntl.h> |
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40 | #include <assert.h> |
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41 | #include <sys/stat.h> |
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42 | #include <fstream> |
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43 | #include <iostream> |
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44 | |
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45 | #include "TLibCommon/TComRom.h" |
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46 | #include "TVideoIOYuv.h" |
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47 | |
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48 | using namespace std; |
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49 | |
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50 | /** |
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51 | * Perform division with rounding of all pixels in img by |
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52 | * 2<sup>shiftbits</sup>. All pixels are clipped to [minval, maxval] |
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53 | * |
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54 | * @param img pointer to image to be transformed |
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55 | * @param stride distance between vertically adjacent pixels of img. |
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56 | * @param width width of active area in img. |
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57 | * @param height height of active area in img. |
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58 | * @param shiftbits number of rounding bits |
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59 | * @param minval minimum clipping value |
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60 | * @param maxval maximum clipping value |
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61 | */ |
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62 | static void invScalePlane(Pel* img, UInt stride, UInt width, UInt height, |
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63 | UInt shiftbits, Pel minval, Pel maxval) |
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64 | { |
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65 | Pel offset = 1 << (shiftbits-1); |
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66 | for (UInt y = 0; y < height; y++) |
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67 | { |
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68 | for (UInt x = 0; x < width; x++) |
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69 | { |
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70 | Pel val = (img[x] + offset) >> shiftbits; |
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71 | img[x] = Clip3(minval, maxval, val); |
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72 | } |
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73 | img += stride; |
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74 | } |
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75 | } |
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76 | |
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77 | /** |
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78 | * Multiply all pixels in img by 2<sup>shiftbits</sup>. |
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79 | * |
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80 | * @param img pointer to image to be transformed |
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81 | * @param stride distance between vertically adjacent pixels of img. |
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82 | * @param width width of active area in img. |
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83 | * @param height height of active area in img. |
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84 | * @param shiftbits number of bits to shift |
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85 | */ |
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86 | static void scalePlane(Pel* img, UInt stride, UInt width, UInt height, |
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87 | UInt shiftbits) |
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88 | { |
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89 | for (UInt y = 0; y < height; y++) |
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90 | { |
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91 | for (UInt x = 0; x < width; x++) |
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92 | { |
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93 | img[x] <<= shiftbits; |
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94 | } |
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95 | img += stride; |
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96 | } |
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97 | } |
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98 | |
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99 | /** |
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100 | * Scale all pixels in img depending upon sign of shiftbits by a factor of |
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101 | * 2<sup>shiftbits</sup>. |
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102 | * |
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103 | * @param img pointer to image to be transformed |
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104 | * @param stride distance between vertically adjacent pixels of img. |
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105 | * @param width width of active area in img. |
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106 | * @param height height of active area in img. |
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107 | * @param shiftbits if zero, no operation performed |
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108 | * if > 0, multiply by 2<sup>shiftbits</sup>, see scalePlane() |
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109 | * if < 0, divide and round by 2<sup>shiftbits</sup> and clip, |
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110 | * see invScalePlane(). |
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111 | * @param minval minimum clipping value when dividing. |
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112 | * @param maxval maximum clipping value when dividing. |
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113 | */ |
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114 | static void scalePlane(Pel* img, UInt stride, UInt width, UInt height, |
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115 | Int shiftbits, Pel minval, Pel maxval) |
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116 | { |
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117 | if (shiftbits == 0) |
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118 | { |
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119 | return; |
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120 | } |
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121 | |
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122 | if (shiftbits > 0) |
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123 | { |
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124 | scalePlane(img, stride, width, height, shiftbits); |
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125 | } |
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126 | else |
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127 | { |
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128 | invScalePlane(img, stride, width, height, -shiftbits, minval, maxval); |
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129 | } |
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130 | } |
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131 | |
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132 | |
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133 | // ==================================================================================================================== |
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134 | // Public member functions |
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135 | // ==================================================================================================================== |
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136 | |
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137 | /** |
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138 | * Open file for reading/writing Y'CbCr frames. |
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139 | * |
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140 | * Frames read/written have bitdepth fileBitDepth, and are automatically |
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141 | * formatted as 8 or 16 bit word values (see TVideoIOYuv::write()). |
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142 | * |
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143 | * Image data read or written is converted to/from internalBitDepth |
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144 | * (See scalePlane(), TVideoIOYuv::read() and TVideoIOYuv::write() for |
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145 | * further details). |
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146 | * |
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147 | * \param pchFile file name string |
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148 | * \param bWriteMode file open mode: true=read, false=write |
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149 | * \param fileBitDepthY bit-depth of input/output file data (luma component). |
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150 | * \param fileBitDepthC bit-depth of input/output file data (chroma components). |
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151 | * \param internalBitDepthY bit-depth to scale image data to/from when reading/writing (luma component). |
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152 | * \param internalBitDepthC bit-depth to scale image data to/from when reading/writing (chroma components). |
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153 | */ |
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154 | Void TVideoIOYuv::open( Char* pchFile, Bool bWriteMode, Int fileBitDepthY, Int fileBitDepthC, Int internalBitDepthY, Int internalBitDepthC) |
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155 | { |
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156 | m_bitDepthShiftY = internalBitDepthY - fileBitDepthY; |
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157 | m_bitDepthShiftC = internalBitDepthC - fileBitDepthC; |
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158 | m_fileBitDepthY = fileBitDepthY; |
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159 | m_fileBitDepthC = fileBitDepthC; |
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160 | |
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161 | if ( bWriteMode ) |
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162 | { |
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163 | m_cHandle.open( pchFile, ios::binary | ios::out ); |
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164 | |
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165 | if( m_cHandle.fail() ) |
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166 | { |
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167 | printf("\nfailed to write reconstructed YUV file\n"); |
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168 | exit(0); |
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169 | } |
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170 | } |
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171 | else |
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172 | { |
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173 | m_cHandle.open( pchFile, ios::binary | ios::in ); |
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174 | |
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175 | if( m_cHandle.fail() ) |
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176 | { |
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177 | printf("\nfailed to open Input YUV file\n"); |
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178 | exit(0); |
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179 | } |
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180 | } |
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181 | |
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182 | return; |
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183 | } |
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184 | |
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185 | Void TVideoIOYuv::close() |
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186 | { |
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187 | m_cHandle.close(); |
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188 | } |
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189 | |
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190 | Bool TVideoIOYuv::isEof() |
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191 | { |
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192 | return m_cHandle.eof(); |
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193 | } |
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194 | |
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195 | Bool TVideoIOYuv::isFail() |
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196 | { |
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197 | return m_cHandle.fail(); |
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198 | } |
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199 | |
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200 | /** |
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201 | * Skip numFrames in input. |
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202 | * |
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203 | * This function correctly handles cases where the input file is not |
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204 | * seekable, by consuming bytes. |
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205 | */ |
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206 | void TVideoIOYuv::skipFrames(UInt numFrames, UInt width, UInt height) |
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207 | { |
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208 | if (!numFrames) |
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209 | return; |
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210 | |
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211 | const UInt wordsize = (m_fileBitDepthY > 8 || m_fileBitDepthC > 8) ? 2 : 1; |
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212 | const streamoff framesize = wordsize * width * height * 3 / 2; |
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213 | const streamoff offset = framesize * numFrames; |
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214 | |
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215 | /* attempt to seek */ |
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216 | if (!!m_cHandle.seekg(offset, ios::cur)) |
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217 | return; /* success */ |
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218 | m_cHandle.clear(); |
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219 | |
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220 | /* fall back to consuming the input */ |
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221 | Char buf[512]; |
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222 | const UInt offset_mod_bufsize = offset % sizeof(buf); |
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223 | for (streamoff i = 0; i < offset - offset_mod_bufsize; i += sizeof(buf)) |
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224 | { |
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225 | m_cHandle.read(buf, sizeof(buf)); |
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226 | } |
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227 | m_cHandle.read(buf, offset_mod_bufsize); |
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228 | } |
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229 | |
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230 | /** |
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231 | * Read width*height pixels from fd into dst, optionally |
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232 | * padding the left and right edges by edge-extension. Input may be |
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233 | * either 8bit or 16bit little-endian lsb-aligned words. |
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234 | * |
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235 | * @param dst destination image |
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236 | * @param fd input file stream |
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237 | * @param is16bit true if input file carries > 8bit data, false otherwise. |
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238 | * @param stride distance between vertically adjacent pixels of dst. |
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239 | * @param width width of active area in dst. |
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240 | * @param height height of active area in dst. |
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241 | * @param pad_x length of horizontal padding. |
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242 | * @param pad_y length of vertical padding. |
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243 | * @return true for success, false in case of error |
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244 | */ |
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245 | static Bool readPlane(Pel* dst, istream& fd, Bool is16bit, |
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246 | UInt stride, |
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247 | UInt width, UInt height, |
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248 | UInt pad_x, UInt pad_y) |
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249 | { |
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250 | Int read_len = width * (is16bit ? 2 : 1); |
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251 | UChar *buf = new UChar[read_len]; |
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252 | for (Int y = 0; y < height; y++) |
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253 | { |
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254 | fd.read(reinterpret_cast<Char*>(buf), read_len); |
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255 | if (fd.eof() || fd.fail() ) |
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256 | { |
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257 | delete[] buf; |
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258 | return false; |
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259 | } |
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260 | |
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261 | if (!is16bit) |
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262 | { |
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263 | for (Int x = 0; x < width; x++) |
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264 | { |
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265 | dst[x] = buf[x]; |
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266 | } |
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267 | } |
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268 | else |
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269 | { |
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270 | for (Int x = 0; x < width; x++) |
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271 | { |
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272 | dst[x] = (buf[2*x+1] << 8) | buf[2*x]; |
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273 | } |
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274 | } |
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275 | |
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276 | for (Int x = width; x < width + pad_x; x++) |
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277 | { |
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278 | dst[x] = dst[width - 1]; |
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279 | } |
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280 | dst += stride; |
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281 | } |
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282 | for (Int y = height; y < height + pad_y; y++) |
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283 | { |
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284 | for (Int x = 0; x < width + pad_x; x++) |
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285 | { |
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286 | dst[x] = (dst - stride)[x]; |
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287 | } |
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288 | dst += stride; |
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289 | } |
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290 | delete[] buf; |
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291 | return true; |
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292 | } |
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293 | |
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294 | /** |
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295 | * Write width*height pixels info fd from src. |
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296 | * |
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297 | * @param fd output file stream |
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298 | * @param src source image |
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299 | * @param is16bit true if input file carries > 8bit data, false otherwise. |
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300 | * @param stride distance between vertically adjacent pixels of src. |
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301 | * @param width width of active area in src. |
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302 | * @param height height of active area in src. |
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303 | * @return true for success, false in case of error |
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304 | */ |
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305 | static Bool writePlane(ostream& fd, Pel* src, Bool is16bit, |
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306 | UInt stride, |
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307 | UInt width, UInt height) |
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308 | { |
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309 | Int write_len = width * (is16bit ? 2 : 1); |
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310 | UChar *buf = new UChar[write_len]; |
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311 | for (Int y = 0; y < height; y++) |
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312 | { |
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313 | if (!is16bit) |
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314 | { |
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315 | for (Int x = 0; x < width; x++) |
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316 | { |
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317 | buf[x] = (UChar) src[x]; |
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318 | } |
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319 | } |
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320 | else |
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321 | { |
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322 | for (Int x = 0; x < width; x++) |
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323 | { |
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324 | buf[2*x] = src[x] & 0xff; |
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325 | buf[2*x+1] = (src[x] >> 8) & 0xff; |
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326 | } |
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327 | } |
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328 | |
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329 | fd.write(reinterpret_cast<Char*>(buf), write_len); |
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330 | if (fd.eof() || fd.fail() ) |
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331 | { |
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332 | delete[] buf; |
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333 | return false; |
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334 | } |
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335 | src += stride; |
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336 | } |
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337 | delete[] buf; |
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338 | return true; |
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339 | } |
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340 | |
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341 | static Bool writeField(ostream& fd, Pel* top, Pel* bottom, Bool is16bit, |
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342 | UInt stride, |
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343 | UInt width, UInt height, bool isTff) |
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344 | { |
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345 | Int write_len = width * (is16bit ? 2 : 1)*2; |
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346 | UChar *buf = new UChar[write_len]; |
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347 | for (Int y = 0; y < height; y++) |
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348 | { |
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349 | if (!is16bit) |
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350 | { |
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351 | for (Int x = 0; x < width; x++) |
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352 | { |
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353 | buf[x] = isTff ? (UChar) top[x] : (UChar) bottom[x]; |
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354 | buf[width+x] = isTff ? (UChar) bottom[x] : (UChar) top[x]; |
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355 | } |
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356 | } |
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357 | else |
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358 | { |
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359 | for (Int x = 0; x < width; x++) |
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360 | { |
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361 | buf[2*x] = isTff ? top[x] & 0xff : bottom[x] & 0xff; |
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362 | buf[2*x+1] = isTff ? (top[x] >> 8) & 0xff : (bottom[x] >> 8) & 0xff; |
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363 | |
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364 | buf[width+2*x] = isTff ? bottom[x] & 0xff : top[x] & 0xff; |
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365 | buf[width+2*x+1] = isTff ? (bottom[x] >> 8) & 0xff : (top[x] >> 8) & 0xff; |
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366 | } |
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367 | } |
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368 | |
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369 | fd.write(reinterpret_cast<Char*>(buf), write_len); |
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370 | if (fd.eof() || fd.fail() ) |
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371 | { |
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372 | delete[] buf; |
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373 | return false; |
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374 | } |
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375 | top += stride; |
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376 | bottom += stride; |
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377 | } |
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378 | delete[] buf; |
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379 | return true; |
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380 | } |
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381 | /** |
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382 | * Read one Y'CbCr frame, performing any required input scaling to change |
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383 | * from the bitdepth of the input file to the internal bit-depth. |
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384 | * |
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385 | * If a bit-depth reduction is required, and internalBitdepth >= 8, then |
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386 | * the input file is assumed to be ITU-R BT.601/709 compliant, and the |
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387 | * resulting data is clipped to the appropriate legal range, as if the |
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388 | * file had been provided at the lower-bitdepth compliant to Rec601/709. |
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389 | * |
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390 | * @param pPicYuv input picture YUV buffer class pointer |
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391 | * @param aiPad source padding size, aiPad[0] = horizontal, aiPad[1] = vertical |
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392 | * @return true for success, false in case of error |
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393 | */ |
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394 | Bool TVideoIOYuv::read ( TComPicYuv* pPicYuv, Int aiPad[2] ) |
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395 | { |
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396 | // check end-of-file |
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397 | if ( isEof() ) return false; |
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398 | |
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399 | Int iStride = pPicYuv->getStride(); |
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400 | |
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401 | // compute actual YUV width & height excluding padding size |
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402 | UInt pad_h = aiPad[0]; |
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403 | UInt pad_v = aiPad[1]; |
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404 | UInt width_full = pPicYuv->getWidth(); |
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405 | UInt height_full = pPicYuv->getHeight(); |
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406 | UInt width = width_full - pad_h; |
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407 | UInt height = height_full - pad_v; |
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408 | Bool is16bit = m_fileBitDepthY > 8 || m_fileBitDepthC > 8; |
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409 | |
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410 | Int desired_bitdepthY = m_fileBitDepthY + m_bitDepthShiftY; |
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411 | Int desired_bitdepthC = m_fileBitDepthC + m_bitDepthShiftC; |
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412 | Pel minvalY = 0; |
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413 | Pel minvalC = 0; |
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414 | Pel maxvalY = (1 << desired_bitdepthY) - 1; |
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415 | Pel maxvalC = (1 << desired_bitdepthC) - 1; |
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416 | #if CLIP_TO_709_RANGE |
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417 | if (m_bitdepthShiftY < 0 && desired_bitdepthY >= 8) |
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418 | { |
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419 | /* ITU-R BT.709 compliant clipping for converting say 10b to 8b */ |
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420 | minvalY = 1 << (desired_bitdepthY - 8); |
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421 | maxvalY = (0xff << (desired_bitdepthY - 8)) -1; |
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422 | } |
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423 | if (m_bitdepthShiftC < 0 && desired_bitdepthC >= 8) |
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424 | { |
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425 | /* ITU-R BT.709 compliant clipping for converting say 10b to 8b */ |
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426 | minvalC = 1 << (desired_bitdepthC - 8); |
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427 | maxvalC = (0xff << (desired_bitdepthC - 8)) -1; |
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428 | } |
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429 | #endif |
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430 | |
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431 | if (! readPlane(pPicYuv->getLumaAddr(), m_cHandle, is16bit, iStride, width, height, pad_h, pad_v)) |
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432 | return false; |
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433 | scalePlane(pPicYuv->getLumaAddr(), iStride, width_full, height_full, m_bitDepthShiftY, minvalY, maxvalY); |
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434 | |
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435 | iStride >>= 1; |
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436 | width_full >>= 1; |
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437 | height_full >>= 1; |
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438 | width >>= 1; |
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439 | height >>= 1; |
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440 | pad_h >>= 1; |
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441 | pad_v >>= 1; |
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442 | |
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443 | if (! readPlane(pPicYuv->getCbAddr(), m_cHandle, is16bit, iStride, width, height, pad_h, pad_v)) |
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444 | return false; |
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445 | scalePlane(pPicYuv->getCbAddr(), iStride, width_full, height_full, m_bitDepthShiftC, minvalC, maxvalC); |
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446 | |
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447 | if (! readPlane(pPicYuv->getCrAddr(), m_cHandle, is16bit, iStride, width, height, pad_h, pad_v)) |
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448 | return false; |
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449 | scalePlane(pPicYuv->getCrAddr(), iStride, width_full, height_full, m_bitDepthShiftC, minvalC, maxvalC); |
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450 | |
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451 | return true; |
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452 | } |
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453 | |
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454 | /** |
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455 | * Write one Y'CbCr frame. No bit-depth conversion is performed, pcPicYuv is |
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456 | * assumed to be at TVideoIO::m_fileBitdepth depth. |
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457 | * |
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458 | * @param pPicYuv input picture YUV buffer class pointer |
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459 | * @param aiPad source padding size, aiPad[0] = horizontal, aiPad[1] = vertical |
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460 | * @return true for success, false in case of error |
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461 | */ |
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462 | Bool TVideoIOYuv::write( TComPicYuv* pPicYuv, Int confLeft, Int confRight, Int confTop, Int confBottom ) |
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463 | { |
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464 | // compute actual YUV frame size excluding padding size |
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465 | Int iStride = pPicYuv->getStride(); |
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466 | UInt width = pPicYuv->getWidth() - confLeft - confRight; |
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467 | UInt height = pPicYuv->getHeight() - confTop - confBottom; |
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468 | Bool is16bit = m_fileBitDepthY > 8 || m_fileBitDepthC > 8; |
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469 | TComPicYuv *dstPicYuv = NULL; |
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470 | Bool retval = true; |
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471 | |
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472 | if ((width==0)||(height==0)) |
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473 | { |
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474 | printf ("\nWarning: writing %d x %d luma sample output picture!", width, height); |
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475 | } |
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476 | |
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477 | if (m_bitDepthShiftY != 0 || m_bitDepthShiftC != 0) |
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478 | { |
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479 | dstPicYuv = new TComPicYuv; |
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480 | dstPicYuv->create( pPicYuv->getWidth(), pPicYuv->getHeight(), 1, 1, 0 ); |
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481 | pPicYuv->copyToPic(dstPicYuv); |
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482 | |
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483 | Pel minvalY = 0; |
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484 | Pel minvalC = 0; |
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485 | Pel maxvalY = (1 << m_fileBitDepthY) - 1; |
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486 | Pel maxvalC = (1 << m_fileBitDepthC) - 1; |
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487 | #if CLIP_TO_709_RANGE |
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488 | if (-m_bitDepthShiftY < 0 && m_fileBitDepthY >= 8) |
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489 | { |
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490 | /* ITU-R BT.709 compliant clipping for converting say 10b to 8b */ |
---|
491 | minvalY = 1 << (m_fileBitDepthY - 8); |
---|
492 | maxvalY = (0xff << (m_fileBitDepthY - 8)) -1; |
---|
493 | } |
---|
494 | if (-m_bitDepthShiftC < 0 && m_fileBitDepthC >= 8) |
---|
495 | { |
---|
496 | /* ITU-R BT.709 compliant clipping for converting say 10b to 8b */ |
---|
497 | minvalC = 1 << (m_fileBitDepthC - 8); |
---|
498 | maxvalC = (0xff << (m_fileBitDepthC - 8)) -1; |
---|
499 | } |
---|
500 | #endif |
---|
501 | scalePlane(dstPicYuv->getLumaAddr(), dstPicYuv->getStride(), dstPicYuv->getWidth(), dstPicYuv->getHeight(), -m_bitDepthShiftY, minvalY, maxvalY); |
---|
502 | scalePlane(dstPicYuv->getCbAddr(), dstPicYuv->getCStride(), dstPicYuv->getWidth()>>1, dstPicYuv->getHeight()>>1, -m_bitDepthShiftC, minvalC, maxvalC); |
---|
503 | scalePlane(dstPicYuv->getCrAddr(), dstPicYuv->getCStride(), dstPicYuv->getWidth()>>1, dstPicYuv->getHeight()>>1, -m_bitDepthShiftC, minvalC, maxvalC); |
---|
504 | } |
---|
505 | else |
---|
506 | { |
---|
507 | dstPicYuv = pPicYuv; |
---|
508 | } |
---|
509 | // location of upper left pel in a plane |
---|
510 | Int planeOffset = confLeft + confTop * iStride; |
---|
511 | |
---|
512 | if (! writePlane(m_cHandle, dstPicYuv->getLumaAddr() + planeOffset, is16bit, iStride, width, height)) |
---|
513 | { |
---|
514 | retval=false; |
---|
515 | goto exit; |
---|
516 | } |
---|
517 | |
---|
518 | width >>= 1; |
---|
519 | height >>= 1; |
---|
520 | iStride >>= 1; |
---|
521 | confLeft >>= 1; |
---|
522 | confRight >>= 1; |
---|
523 | confTop >>= 1; |
---|
524 | confBottom >>= 1; |
---|
525 | |
---|
526 | planeOffset = confLeft + confTop * iStride; |
---|
527 | |
---|
528 | if (! writePlane(m_cHandle, dstPicYuv->getCbAddr() + planeOffset, is16bit, iStride, width, height)) |
---|
529 | { |
---|
530 | retval=false; |
---|
531 | goto exit; |
---|
532 | } |
---|
533 | if (! writePlane(m_cHandle, dstPicYuv->getCrAddr() + planeOffset, is16bit, iStride, width, height)) |
---|
534 | { |
---|
535 | retval=false; |
---|
536 | goto exit; |
---|
537 | } |
---|
538 | |
---|
539 | exit: |
---|
540 | if (m_bitDepthShiftY != 0 || m_bitDepthShiftC != 0) |
---|
541 | { |
---|
542 | dstPicYuv->destroy(); |
---|
543 | delete dstPicYuv; |
---|
544 | } |
---|
545 | return retval; |
---|
546 | } |
---|
547 | |
---|
548 | |
---|
549 | /** |
---|
550 | * Write one Y'CbCr frame. No bit-depth conversion is performed, pcPicYuv is |
---|
551 | * assumed to be at TVideoIO::m_fileBitdepth depth. |
---|
552 | * |
---|
553 | * @param pPicTop input top field YUV buffer class pointer |
---|
554 | * @param pPicBottom input bottom field YUV buffer class pointer |
---|
555 | * @param aiPad source padding size, aiPad[0] = horizontal, aiPad[1] = vertical |
---|
556 | * @return true for success, false in case of error |
---|
557 | */ |
---|
558 | Bool TVideoIOYuv::write( TComPicYuv* pPicTop, TComPicYuv* pPicBottom, Int cropLeft, Int cropRight, Int cropTop, Int cropBottom , bool isTff) |
---|
559 | { |
---|
560 | // compute actual YUV frame size excluding padding size |
---|
561 | Int iStride = pPicTop->getStride(); |
---|
562 | UInt width = pPicTop->getWidth() - cropLeft - cropRight; |
---|
563 | UInt height = pPicTop->getHeight() - cropTop - cropBottom; |
---|
564 | Bool is16bit = m_fileBitDepthY > 8 || m_fileBitDepthC > 8; |
---|
565 | |
---|
566 | TComPicYuv *dstPicTop = NULL; |
---|
567 | TComPicYuv *dstPicBottom = NULL; |
---|
568 | |
---|
569 | Bool retval = true; |
---|
570 | |
---|
571 | if ((width==0)||(height==0)) |
---|
572 | { |
---|
573 | printf ("\nWarning: writing %d x %d luma sample output picture!", width, height); |
---|
574 | } |
---|
575 | |
---|
576 | if (m_bitDepthShiftY != 0 || m_bitDepthShiftC != 0) |
---|
577 | { |
---|
578 | dstPicTop = new TComPicYuv; |
---|
579 | dstPicTop->create( pPicTop->getWidth(), pPicTop->getHeight(), 1, 1, 0 ); |
---|
580 | pPicTop->copyToPic(dstPicTop); |
---|
581 | |
---|
582 | dstPicBottom = new TComPicYuv; |
---|
583 | dstPicBottom->create( pPicBottom->getWidth(), pPicBottom->getHeight(), 1, 1, 0 ); |
---|
584 | pPicBottom->copyToPic(dstPicBottom); |
---|
585 | |
---|
586 | Pel minvalY = 0; |
---|
587 | Pel minvalC = 0; |
---|
588 | Pel maxvalY = (1 << m_fileBitDepthY) - 1; |
---|
589 | Pel maxvalC = (1 << m_fileBitDepthC) - 1; |
---|
590 | #if CLIP_TO_709_RANGE |
---|
591 | if (-m_bitDepthShiftY < 0 && m_fileBitDepthY >= 8) |
---|
592 | { |
---|
593 | /* ITU-R BT.709 compliant clipping for converting say 10b to 8b */ |
---|
594 | minvalY = 1 << (m_fileBitDepthY - 8); |
---|
595 | maxvalY = (0xff << (m_fileBitDepthY - 8)) -1; |
---|
596 | } |
---|
597 | if (-m_bitDepthShiftC < 0 && m_fileBitDepthC >= 8) |
---|
598 | { |
---|
599 | /* ITU-R BT.709 compliant clipping for converting say 10b to 8b */ |
---|
600 | minvalC = 1 << (m_fileBitDepthC - 8); |
---|
601 | maxvalC = (0xff << (m_fileBitDepthC - 8)) -1; |
---|
602 | } |
---|
603 | #endif |
---|
604 | scalePlane(dstPicTop->getLumaAddr(), dstPicTop->getStride(), dstPicTop->getWidth(), dstPicTop->getHeight(), -m_bitDepthShiftY, minvalY, maxvalY); |
---|
605 | scalePlane(dstPicTop->getCbAddr(), dstPicTop->getCStride(), dstPicTop->getWidth()>>1, dstPicTop->getHeight()>>1, -m_bitDepthShiftC, minvalC, maxvalC); |
---|
606 | scalePlane(dstPicTop->getCrAddr(), dstPicTop->getCStride(), dstPicTop->getWidth()>>1, dstPicTop->getHeight()>>1, -m_bitDepthShiftC, minvalC, maxvalC); |
---|
607 | |
---|
608 | scalePlane(dstPicBottom->getLumaAddr(), dstPicBottom->getStride(), dstPicBottom->getWidth(), dstPicBottom->getHeight(), -m_bitDepthShiftY, minvalY, maxvalY); |
---|
609 | scalePlane(dstPicBottom->getCbAddr(), dstPicBottom->getCStride(), dstPicBottom->getWidth()>>1, dstPicBottom->getHeight()>>1, -m_bitDepthShiftC, minvalC, maxvalC); |
---|
610 | scalePlane(dstPicBottom->getCrAddr(), dstPicBottom->getCStride(), dstPicBottom->getWidth()>>1, dstPicBottom->getHeight()>>1, -m_bitDepthShiftC, minvalC, maxvalC); |
---|
611 | } |
---|
612 | else |
---|
613 | { |
---|
614 | dstPicTop = pPicTop; |
---|
615 | dstPicBottom = pPicBottom; |
---|
616 | } |
---|
617 | // location of upper left pel in a plane |
---|
618 | Int planeOffset = 0; //cropLeft + cropTop * iStride; |
---|
619 | //Write luma |
---|
620 | if (! writeField(m_cHandle, dstPicTop->getLumaAddr() + planeOffset, dstPicBottom->getLumaAddr() + planeOffset, is16bit, iStride, width, height, isTff)) |
---|
621 | { |
---|
622 | retval=false; |
---|
623 | goto exit; |
---|
624 | } |
---|
625 | |
---|
626 | width >>= 1; |
---|
627 | height >>= 1; |
---|
628 | iStride >>= 1; |
---|
629 | cropLeft >>= 1; |
---|
630 | cropRight >>= 1; |
---|
631 | |
---|
632 | planeOffset = 0; // cropLeft + cropTop * iStride; |
---|
633 | |
---|
634 | //Write chroma U |
---|
635 | if (! writeField(m_cHandle, dstPicTop->getCbAddr() + planeOffset, dstPicBottom->getCbAddr() + planeOffset, is16bit, iStride, width, height, isTff)) |
---|
636 | { |
---|
637 | retval=false; |
---|
638 | goto exit; |
---|
639 | } |
---|
640 | |
---|
641 | //Write chroma V |
---|
642 | if (! writeField(m_cHandle, dstPicTop->getCrAddr() + planeOffset, dstPicBottom->getCrAddr() + planeOffset, is16bit, iStride, width, height, isTff)) |
---|
643 | |
---|
644 | { |
---|
645 | retval=false; |
---|
646 | goto exit; |
---|
647 | } |
---|
648 | |
---|
649 | exit: |
---|
650 | if (m_bitDepthShiftY != 0 || m_bitDepthShiftC != 0) |
---|
651 | { |
---|
652 | dstPicTop->destroy(); |
---|
653 | delete dstPicTop; |
---|
654 | dstPicBottom->destroy(); |
---|
655 | delete dstPicBottom; |
---|
656 | } |
---|
657 | return retval; |
---|
658 | } |
---|