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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QtCore/qpointer.h> |
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43 #include <QtCore/qdatetime.h> |
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44 #include <QtCore/qbasictimer.h> |
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45 #include <QtCore/qcoreevent.h> |
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46 #include <QtGui/qgraphicsscene.h> |
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47 #include <QtGui/qgraphicsview.h> |
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48 #include <QtGui/qscrollbar.h> |
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49 #include <QtGui/qx11info_x11.h> |
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50 |
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51 #include "qgraphicsvideoitem.h" |
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52 |
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53 #include <qmediaobject.h> |
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54 #include <qmediaservice.h> |
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55 #include <qpaintervideosurface_p.h> |
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56 #include <qvideorenderercontrol.h> |
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57 |
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58 #include <qvideosurfaceformat.h> |
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59 |
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60 #include "qxvideosurface_maemo5_p.h" |
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61 |
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62 |
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63 QT_BEGIN_NAMESPACE |
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64 |
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65 //update overlay geometry slightly later, |
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66 //to ensure color key is alredy replaced with static frame |
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67 #define GEOMETRY_UPDATE_DELAY 20 |
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68 //this is necessary to prevent flickering, see maemo bug 8798 |
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69 //on geometry changes, the color key is replaced with static image frame |
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70 //until the overlay is re-initialized |
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71 #define SOFTWARE_RENDERING_DURATION 150 |
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72 |
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73 #ifdef __ARM_NEON__ |
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74 |
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75 /* |
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76 * ARM NEON optimized implementation of UYVY -> RGB16 convertor |
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77 */ |
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78 static void uyvy422_to_rgb16_line_neon (uint8_t * dst, const uint8_t * src, int n) |
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79 { |
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80 /* and this is the NEON code itself */ |
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81 static __attribute__ ((aligned (16))) uint16_t acc_r[8] = { |
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82 22840, 22840, 22840, 22840, 22840, 22840, 22840, 22840, |
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83 }; |
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84 static __attribute__ ((aligned (16))) uint16_t acc_g[8] = { |
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85 17312, 17312, 17312, 17312, 17312, 17312, 17312, 17312, |
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86 }; |
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87 static __attribute__ ((aligned (16))) uint16_t acc_b[8] = { |
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88 28832, 28832, 28832, 28832, 28832, 28832, 28832, 28832, |
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89 }; |
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90 /* |
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91 * Registers: |
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92 * q0, q1 : d0, d1, d2, d3 - are used for initial loading of YUV data |
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93 * q2 : d4, d5 - are used for storing converted RGB data |
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94 * q3 : d6, d7 - are used for temporary storage |
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95 * |
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96 * q6 : d12, d13 - are used for converting to RGB16 |
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97 * q7 : d14, d15 - are used for storing RGB16 data |
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98 * q4-q5 - reserved |
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99 * |
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100 * q8, q9 : d16, d17, d18, d19 - are used for expanded Y data |
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101 * q10 : d20, d21 |
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102 * q11 : d22, d23 |
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103 * q12 : d24, d25 |
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104 * q13 : d26, d27 |
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105 * q13, q14, q15 - various constants (#16, #149, #204, #50, #104, #154) |
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106 */ |
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107 asm volatile (".macro convert_macroblock size\n" |
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108 /* load up to 16 source pixels in UYVY format */ |
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109 ".if \\size == 16\n" |
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110 "pld [%[src], #128]\n" |
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111 "vld1.32 {d0, d1, d2, d3}, [%[src]]!\n" |
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112 ".elseif \\size == 8\n" |
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113 "vld1.32 {d0, d1}, [%[src]]!\n" |
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114 ".elseif \\size == 4\n" |
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115 "vld1.32 {d0}, [%[src]]!\n" |
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116 ".elseif \\size == 2\n" |
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117 "vld1.32 {d0[0]}, [%[src]]!\n" |
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118 ".else\n" ".error \"unsupported macroblock size\"\n" ".endif\n" |
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119 /* convert from 'packed' to 'planar' representation */ |
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120 "vuzp.8 d0, d1\n" /* d1 - separated Y data (first 8 bytes) */ |
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121 "vuzp.8 d2, d3\n" /* d3 - separated Y data (next 8 bytes) */ |
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122 "vuzp.8 d0, d2\n" /* d0 - separated U data, d2 - separated V data */ |
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123 /* split even and odd Y color components */ |
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124 "vuzp.8 d1, d3\n" /* d1 - evenY, d3 - oddY */ |
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125 /* clip upper and lower boundaries */ |
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126 "vqadd.u8 q0, q0, q4\n" |
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127 "vqadd.u8 q1, q1, q4\n" |
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128 "vqsub.u8 q0, q0, q5\n" |
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129 "vqsub.u8 q1, q1, q5\n" |
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130 "vshr.u8 d4, d2, #1\n" /* d4 = V >> 1 */ |
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131 "vmull.u8 q8, d1, d27\n" /* q8 = evenY * 149 */ |
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132 "vmull.u8 q9, d3, d27\n" /* q9 = oddY * 149 */ |
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133 "vld1.16 {d20, d21}, [%[acc_r], :128]\n" /* q10 - initialize accumulator for red */ |
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134 "vsubw.u8 q10, q10, d4\n" /* red acc -= (V >> 1) */ |
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135 "vmlsl.u8 q10, d2, d28\n" /* red acc -= V * 204 */ |
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136 "vld1.16 {d22, d23}, [%[acc_g], :128]\n" /* q11 - initialize accumulator for green */ |
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137 "vmlsl.u8 q11, d2, d30\n" /* green acc -= V * 104 */ |
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138 "vmlsl.u8 q11, d0, d29\n" /* green acc -= U * 50 */ |
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139 "vld1.16 {d24, d25}, [%[acc_b], :128]\n" /* q12 - initialize accumulator for blue */ |
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140 "vmlsl.u8 q12, d0, d30\n" /* blue acc -= U * 104 */ |
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141 "vmlsl.u8 q12, d0, d31\n" /* blue acc -= U * 154 */ |
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142 "vhsub.s16 q3, q8, q10\n" /* calculate even red components */ |
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143 "vhsub.s16 q10, q9, q10\n" /* calculate odd red components */ |
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144 "vqshrun.s16 d0, q3, #6\n" /* right shift, narrow and saturate even red components */ |
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145 "vqshrun.s16 d3, q10, #6\n" /* right shift, narrow and saturate odd red components */ |
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146 "vhadd.s16 q3, q8, q11\n" /* calculate even green components */ |
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147 "vhadd.s16 q11, q9, q11\n" /* calculate odd green components */ |
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148 "vqshrun.s16 d1, q3, #6\n" /* right shift, narrow and saturate even green components */ |
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149 "vqshrun.s16 d4, q11, #6\n" /* right shift, narrow and saturate odd green components */ |
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150 "vhsub.s16 q3, q8, q12\n" /* calculate even blue components */ |
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151 "vhsub.s16 q12, q9, q12\n" /* calculate odd blue components */ |
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152 "vqshrun.s16 d2, q3, #6\n" /* right shift, narrow and saturate even blue components */ |
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153 "vqshrun.s16 d5, q12, #6\n" /* right shift, narrow and saturate odd blue components */ |
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154 "vzip.8 d0, d3\n" /* join even and odd red components */ |
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155 "vzip.8 d1, d4\n" /* join even and odd green components */ |
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156 "vzip.8 d2, d5\n" /* join even and odd blue components */ |
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157 "vshll.u8 q7, d0, #8\n" //red |
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158 "vshll.u8 q6, d1, #8\n" //greed |
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159 "vsri.u16 q7, q6, #5\n" |
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160 "vshll.u8 q6, d2, #8\n" //blue |
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161 "vsri.u16 q7, q6, #11\n" //now there is rgb16 in q7 |
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162 ".if \\size == 16\n" |
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163 "vst1.16 {d14, d15}, [%[dst]]!\n" |
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164 //"vst3.8 {d0, d1, d2}, [%[dst]]!\n" |
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165 "vshll.u8 q7, d3, #8\n" //red |
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166 "vshll.u8 q6, d4, #8\n" //greed |
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167 "vsri.u16 q7, q6, #5\n" |
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168 "vshll.u8 q6, d5, #8\n" //blue |
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169 "vsri.u16 q7, q6, #11\n" //now there is rgb16 in q7 |
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170 //"vst3.8 {d3, d4, d5}, [%[dst]]!\n" |
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171 "vst1.16 {d14, d15}, [%[dst]]!\n" |
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172 ".elseif \\size == 8\n" |
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173 "vst1.16 {d14, d15}, [%[dst]]!\n" |
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174 //"vst3.8 {d0, d1, d2}, [%[dst]]!\n" |
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175 ".elseif \\size == 4\n" |
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176 "vst1.8 {d14}, [%[dst]]!\n" |
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177 ".elseif \\size == 2\n" |
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178 "vst1.8 {d14[0]}, [%[dst]]!\n" |
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179 "vst1.8 {d14[1]}, [%[dst]]!\n" |
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180 ".else\n" |
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181 ".error \"unsupported macroblock size\"\n" |
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182 ".endif\n" |
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183 ".endm\n" |
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184 "vmov.u8 d8, #15\n" /* add this to U/V to saturate upper boundary */ |
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185 "vmov.u8 d9, #20\n" /* add this to Y to saturate upper boundary */ |
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186 "vmov.u8 d10, #31\n" /* sub this from U/V to saturate lower boundary */ |
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187 "vmov.u8 d11, #36\n" /* sub this from Y to saturate lower boundary */ |
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188 "vmov.u8 d26, #16\n" |
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189 "vmov.u8 d27, #149\n" |
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190 "vmov.u8 d28, #204\n" |
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191 "vmov.u8 d29, #50\n" |
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192 "vmov.u8 d30, #104\n" |
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193 "vmov.u8 d31, #154\n" |
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194 "subs %[n], %[n], #16\n" |
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195 "blt 2f\n" |
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196 "1:\n" |
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197 "convert_macroblock 16\n" |
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198 "subs %[n], %[n], #16\n" |
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199 "bge 1b\n" |
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200 "2:\n" |
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201 "tst %[n], #8\n" |
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202 "beq 3f\n" |
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203 "convert_macroblock 8\n" |
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204 "3:\n" |
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205 "tst %[n], #4\n" |
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206 "beq 4f\n" |
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207 "convert_macroblock 4\n" |
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208 "4:\n" |
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209 "tst %[n], #2\n" |
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210 "beq 5f\n" |
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211 "convert_macroblock 2\n" |
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212 "5:\n" |
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213 ".purgem convert_macroblock\n":[src] "+&r" (src),[dst] "+&r" (dst), |
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214 [n] "+&r" (n) |
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215 :[acc_r] "r" (&acc_r[0]),[acc_g] "r" (&acc_g[0]),[acc_b] "r" (&acc_b[0]) |
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216 :"cc", "memory", "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "d8", "d9", "d10", "d11", "d12", "d13", "d14", "d15", |
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217 "d16", "d17", "d18", "d19", "d20", "d21", "d22", "d23", |
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218 "d24", "d25", "d26", "d27", "d28", "d29", "d30", "d31"); |
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219 } |
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220 |
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221 #endif |
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222 |
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223 class QGraphicsVideoItemPrivate |
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224 { |
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225 public: |
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226 QGraphicsVideoItemPrivate() |
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227 : q_ptr(0) |
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228 , surface(0) |
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229 , mediaObject(0) |
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230 , service(0) |
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231 , rendererControl(0) |
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232 , savedViewportUpdateMode(QGraphicsView::FullViewportUpdate) |
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233 , aspectRatioMode(Qt::KeepAspectRatio) |
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234 , rect(0.0, 0.0, 320, 240) |
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235 , softwareRenderingEnabled(false) |
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236 { |
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237 } |
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238 |
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239 QGraphicsVideoItem *q_ptr; |
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240 |
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241 QXVideoSurface *surface; |
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242 QMediaObject *mediaObject; |
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243 QMediaService *service; |
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244 QVideoRendererControl *rendererControl; |
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245 QPointer<QGraphicsView> currentView; |
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246 QGraphicsView::ViewportUpdateMode savedViewportUpdateMode; |
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247 |
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248 Qt::AspectRatioMode aspectRatioMode; |
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249 QRectF rect; |
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250 QRectF boundingRect; |
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251 QRectF sourceRect; |
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252 QSizeF nativeSize; |
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253 |
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254 QPixmap lastFrame; |
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255 QBasicTimer softwareRenderingTimer; |
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256 QBasicTimer geometryUpdateTimer; |
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257 bool softwareRenderingEnabled; |
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258 QRect overlayRect; |
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259 |
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260 void clearService(); |
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261 void updateRects(); |
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262 void updateLastFrame(); |
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263 |
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264 void _q_present(); |
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265 void _q_formatChanged(const QVideoSurfaceFormat &format); |
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266 void _q_serviceDestroyed(); |
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267 void _q_mediaObjectDestroyed(); |
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268 }; |
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269 |
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270 void QGraphicsVideoItemPrivate::clearService() |
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271 { |
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272 if (rendererControl) { |
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273 surface->stop(); |
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274 rendererControl->setSurface(0); |
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275 service->releaseControl(rendererControl); |
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276 rendererControl = 0; |
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277 } |
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278 |
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279 if (service) { |
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280 QObject::disconnect(service, SIGNAL(destroyed()), q_ptr, SLOT(_q_serviceDestroyed())); |
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281 service = 0; |
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282 } |
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283 } |
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284 |
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285 void QGraphicsVideoItemPrivate::updateRects() |
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286 { |
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287 q_ptr->prepareGeometryChange(); |
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288 |
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289 if (nativeSize.isEmpty()) { |
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290 boundingRect = QRectF(); |
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291 } else if (aspectRatioMode == Qt::IgnoreAspectRatio) { |
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292 boundingRect = rect; |
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293 sourceRect = QRectF(0, 0, 1, 1); |
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294 } else if (aspectRatioMode == Qt::KeepAspectRatio) { |
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295 QSizeF size = nativeSize; |
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296 size.scale(rect.size(), Qt::KeepAspectRatio); |
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297 |
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298 boundingRect = QRectF(0, 0, size.width(), size.height()); |
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299 boundingRect.moveCenter(rect.center()); |
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300 |
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301 sourceRect = QRectF(0, 0, 1, 1); |
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302 } else if (aspectRatioMode == Qt::KeepAspectRatioByExpanding) { |
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303 boundingRect = rect; |
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304 |
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305 QSizeF size = rect.size(); |
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306 size.scale(nativeSize, Qt::KeepAspectRatio); |
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307 |
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308 sourceRect = QRectF( |
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309 0, 0, size.width() / nativeSize.width(), size.height() / nativeSize.height()); |
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310 sourceRect.moveCenter(QPointF(0.5, 0.5)); |
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311 } |
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312 } |
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313 |
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314 void QGraphicsVideoItemPrivate::updateLastFrame() |
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315 { |
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316 lastFrame = QPixmap(); |
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317 |
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318 if (!softwareRenderingEnabled) |
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319 return; |
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320 |
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321 QVideoFrame lastVideoFrame = surface->lastFrame(); |
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322 |
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323 if (!lastVideoFrame.isValid()) |
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324 return; |
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325 |
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326 if (lastVideoFrame.map(QAbstractVideoBuffer::ReadOnly)) { |
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327 |
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328 #ifdef __ARM_NEON__ |
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329 if (lastVideoFrame.pixelFormat() == QVideoFrame::Format_UYVY) { |
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330 QImage lastImage(lastVideoFrame.size(), QImage::Format_RGB16); |
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331 |
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332 const uchar *src = lastVideoFrame.bits(); |
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333 uchar *dst = lastImage.bits(); |
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334 const int srcLineStep = lastVideoFrame.bytesPerLine(); |
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335 const int dstLineStep = lastImage.bytesPerLine(); |
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336 const int h = lastVideoFrame.height(); |
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337 const int w = lastVideoFrame.width(); |
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338 |
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339 for (int y=0; y<h; y++) { |
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340 uyvy422_to_rgb16_line_neon(dst, src, w); |
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341 src += srcLineStep; |
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342 dst += dstLineStep; |
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343 } |
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344 lastFrame = QPixmap::fromImage( |
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345 lastImage.scaled(boundingRect.size().toSize(), Qt::IgnoreAspectRatio, Qt::FastTransformation)); |
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346 } else |
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347 #endif |
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348 { |
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349 QImage::Format imgFormat = QVideoFrame::imageFormatFromPixelFormat(lastVideoFrame.pixelFormat()); |
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350 |
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351 if (imgFormat != QImage::Format_Invalid) { |
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352 QImage lastImage(lastVideoFrame.bits(), |
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353 lastVideoFrame.width(), |
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354 lastVideoFrame.height(), |
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355 lastVideoFrame.bytesPerLine(), |
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356 imgFormat); |
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357 |
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358 lastFrame = QPixmap::fromImage( |
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359 lastImage.scaled(boundingRect.size().toSize(), Qt::IgnoreAspectRatio, Qt::FastTransformation)); |
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360 } |
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361 } |
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362 |
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363 lastVideoFrame.unmap(); |
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364 } |
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365 |
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366 } |
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367 |
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368 void QGraphicsVideoItemPrivate::_q_present() |
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369 { |
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370 q_ptr->update(boundingRect); |
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371 } |
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372 |
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373 void QGraphicsVideoItemPrivate::_q_formatChanged(const QVideoSurfaceFormat &format) |
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374 { |
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375 nativeSize = format.sizeHint(); |
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376 lastFrame = QPixmap(); |
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377 |
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378 updateRects(); |
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379 |
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380 emit q_ptr->nativeSizeChanged(nativeSize); |
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381 } |
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382 |
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383 void QGraphicsVideoItemPrivate::_q_serviceDestroyed() |
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384 { |
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385 rendererControl = 0; |
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386 service = 0; |
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387 |
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388 surface->stop(); |
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389 } |
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390 |
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391 void QGraphicsVideoItemPrivate::_q_mediaObjectDestroyed() |
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392 { |
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393 mediaObject = 0; |
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394 |
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395 clearService(); |
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396 } |
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397 |
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398 QGraphicsVideoItem::QGraphicsVideoItem(QGraphicsItem *parent) |
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399 : QGraphicsObject(parent) |
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400 , d_ptr(new QGraphicsVideoItemPrivate) |
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401 { |
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402 d_ptr->q_ptr = this; |
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403 d_ptr->surface = new QXVideoSurface; |
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404 |
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405 setCacheMode(NoCache); |
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406 setFlag(QGraphicsItem::ItemIgnoresParentOpacity); |
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407 setFlag(QGraphicsItem::ItemSendsGeometryChanges); |
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408 setFlag(QGraphicsItem::ItemSendsScenePositionChanges); |
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409 |
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410 connect(d_ptr->surface, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)), |
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411 this, SLOT(_q_formatChanged(QVideoSurfaceFormat))); |
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412 |
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413 connect(d_ptr->surface, SIGNAL(activeChanged(bool)), this, SLOT(_q_present())); |
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414 } |
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415 |
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416 QGraphicsVideoItem::~QGraphicsVideoItem() |
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417 { |
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418 if (d_ptr->rendererControl) { |
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419 d_ptr->rendererControl->setSurface(0); |
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420 d_ptr->service->releaseControl(d_ptr->rendererControl); |
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421 } |
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422 |
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423 if (d_ptr->currentView) |
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424 d_ptr->currentView->setViewportUpdateMode(d_ptr->savedViewportUpdateMode); |
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425 |
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426 delete d_ptr->surface; |
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427 delete d_ptr; |
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428 } |
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429 |
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430 QMediaObject *QGraphicsVideoItem::mediaObject() const |
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431 { |
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432 return d_func()->mediaObject; |
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433 } |
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434 |
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435 bool QGraphicsVideoItem::setMediaObject(QMediaObject *object) |
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436 { |
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437 Q_D(QGraphicsVideoItem); |
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438 |
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439 if (object == d->mediaObject) |
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440 return true; |
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441 |
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442 d->clearService(); |
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443 |
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444 d->mediaObject = object; |
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445 |
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446 if (d->mediaObject) { |
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447 d->service = d->mediaObject->service(); |
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448 |
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449 if (d->service) { |
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450 d->rendererControl = qobject_cast<QVideoRendererControl *>( |
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451 d->service->requestControl(QVideoRendererControl_iid)); |
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452 |
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453 if (d->rendererControl != 0) { |
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454 connect(d->service, SIGNAL(destroyed()), this, SLOT(_q_serviceDestroyed())); |
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455 d->rendererControl->setSurface(d->surface); |
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456 return true; |
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457 } |
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458 |
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459 } |
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460 } |
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461 |
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462 return false; |
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463 } |
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464 |
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465 Qt::AspectRatioMode QGraphicsVideoItem::aspectRatioMode() const |
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466 { |
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467 return d_func()->aspectRatioMode; |
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468 } |
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469 |
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470 void QGraphicsVideoItem::setAspectRatioMode(Qt::AspectRatioMode mode) |
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471 { |
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472 Q_D(QGraphicsVideoItem); |
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473 |
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474 d->aspectRatioMode = mode; |
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475 d->updateRects(); |
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476 } |
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477 |
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478 QPointF QGraphicsVideoItem::offset() const |
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479 { |
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480 return d_func()->rect.topLeft(); |
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481 } |
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482 |
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483 void QGraphicsVideoItem::setOffset(const QPointF &offset) |
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484 { |
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485 Q_D(QGraphicsVideoItem); |
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486 |
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487 d->rect.moveTo(offset); |
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488 d->updateRects(); |
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489 } |
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490 |
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491 QSizeF QGraphicsVideoItem::size() const |
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492 { |
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493 return d_func()->rect.size(); |
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494 } |
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495 |
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496 void QGraphicsVideoItem::setSize(const QSizeF &size) |
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497 { |
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498 Q_D(QGraphicsVideoItem); |
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499 |
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500 d->rect.setSize(size.isValid() ? size : QSizeF(0, 0)); |
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501 d->updateRects(); |
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502 } |
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503 |
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504 QSizeF QGraphicsVideoItem::nativeSize() const |
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505 { |
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506 return d_func()->nativeSize; |
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507 } |
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508 |
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509 QRectF QGraphicsVideoItem::boundingRect() const |
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510 { |
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511 return d_func()->boundingRect; |
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512 } |
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513 |
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514 void QGraphicsVideoItem::paint( |
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515 QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) |
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516 { |
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517 qDebug() << "QGraphicsVideoItem::paint"; |
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518 Q_UNUSED(option); |
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519 Q_D(QGraphicsVideoItem); |
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520 |
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521 QGraphicsView *view = 0; |
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522 if (scene() && !scene()->views().isEmpty()) |
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523 view = scene()->views().first(); |
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524 |
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525 //it's necessary to switch vieport update mode to FullViewportUpdate |
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526 //otherwise the video item area can be just scrolled without notifying overlay |
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527 //about geometry changes |
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528 if (view != d->currentView) { |
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529 if (d->currentView) { |
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530 d->currentView->setViewportUpdateMode(d->savedViewportUpdateMode); |
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531 } |
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532 |
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533 d->currentView = view; |
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534 if (view) { |
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535 d->savedViewportUpdateMode = view->viewportUpdateMode(); |
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536 view->setViewportUpdateMode(QGraphicsView::FullViewportUpdate); |
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537 } |
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538 } |
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539 |
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540 QColor colorKey = Qt::black; |
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541 bool geometryChanged = false; |
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542 |
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543 if (d->surface) { |
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544 if (widget) |
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545 d->surface->setWinId(widget->winId()); |
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546 |
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547 QTransform transform = painter->combinedTransform(); |
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548 QRect overlayRect = transform.mapRect(boundingRect()).toRect(); |
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549 QRect currentSurfaceRect = d->surface->displayRect(); |
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550 |
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551 if (widget) { |
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552 //workaround for xvideo issue with U/V planes swapped |
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553 QPoint topLeft = widget->mapToGlobal(overlayRect.topLeft()); |
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554 if ((topLeft.x() & 1) == 0) |
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555 overlayRect.moveLeft(overlayRect.left()-1); |
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556 } |
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557 |
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558 d->overlayRect = overlayRect; |
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559 |
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560 if (currentSurfaceRect != overlayRect) { |
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561 if (!d->surface->displayRect().isEmpty()) { |
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562 if (d->softwareRenderingEnabled) { |
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563 //recalculate scaled frame pixmap if area is resized |
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564 if (currentSurfaceRect.size() != overlayRect.size()) { |
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565 d->updateLastFrame(); |
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566 d->surface->setDisplayRect( overlayRect ); |
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567 } |
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568 } else { |
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569 d->softwareRenderingEnabled = true; |
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570 d->updateLastFrame(); |
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571 |
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572 //don't set new geometry right now, |
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573 //but with small delay, to ensure the frame is already |
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574 //rendered on top of color key |
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575 if (!d->geometryUpdateTimer.isActive()) |
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576 d->geometryUpdateTimer.start(GEOMETRY_UPDATE_DELAY, this); |
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577 } |
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578 } else |
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579 d->surface->setDisplayRect( overlayRect ); |
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580 |
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581 geometryChanged = true; |
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582 d->softwareRenderingTimer.start(SOFTWARE_RENDERING_DURATION, this); |
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583 |
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584 //qDebug() << "set video display rect:" << deviceRect; |
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585 |
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586 } |
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587 |
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588 colorKey = d->surface->colorKey(); |
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589 } |
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590 |
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591 |
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592 if (!d->softwareRenderingEnabled) { |
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593 painter->fillRect(d->boundingRect, colorKey); |
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594 } else { |
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595 if (!d->lastFrame.isNull()) { |
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596 painter->drawPixmap(d->boundingRect.topLeft(), d->lastFrame ); |
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597 |
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598 } else |
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599 painter->fillRect(d->boundingRect, Qt::black); |
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600 } |
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601 } |
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602 |
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603 QVariant QGraphicsVideoItem::itemChange(GraphicsItemChange change, const QVariant &value) |
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604 { |
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605 Q_D(QGraphicsVideoItem); |
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606 |
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607 if (change == ItemScenePositionHasChanged) { |
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608 update(boundingRect()); |
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609 } else { |
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610 return QGraphicsItem::itemChange(change, value); |
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611 } |
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612 |
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613 return value; |
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614 } |
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615 |
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616 void QGraphicsVideoItem::timerEvent(QTimerEvent *event) |
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617 { |
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618 Q_D(QGraphicsVideoItem); |
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619 |
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620 if (event->timerId() == d->softwareRenderingTimer.timerId() && d->softwareRenderingEnabled) { |
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621 d->softwareRenderingTimer.stop(); |
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622 d->softwareRenderingEnabled = false; |
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623 d->updateLastFrame(); |
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624 // repaint last frame, to ensure geometry change is applyed in paused state |
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625 d->surface->repaintLastFrame(); |
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626 d->_q_present(); |
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627 } else if ((event->timerId() == d->geometryUpdateTimer.timerId())) { |
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628 d->geometryUpdateTimer.stop(); |
|
629 //slightly delayed geometry update, |
|
630 //to avoid flicker at the first geometry change |
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631 d->surface->setDisplayRect( d->overlayRect ); |
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632 } |
|
633 |
|
634 QGraphicsObject::timerEvent(event); |
|
635 } |
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636 |
|
637 #include "moc_qgraphicsvideoitem.cpp" |
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638 QT_END_NAMESPACE |