95 #define gst_cast_float(x) ((gint)floor((x)+0.5)) |
94 #define gst_cast_float(x) ((gint)floor((x)+0.5)) |
96 #define gst_cast_double(x) ((gint)floor((x)+0.5)) |
95 #define gst_cast_double(x) ((gint)floor((x)+0.5)) |
97 |
96 |
98 #endif |
97 #endif |
99 |
98 |
100 /* FIXME 0.11: don't use GLib namespace (GDOUBLE_SWAP_LE_BE, GFLOAT_TO_LE, |
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101 * GFLOAT_TO_BE, GDOUBLE_TO_LE, GDOUBLE_TO_BE) */ |
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102 |
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103 /** |
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104 * GFLOAT_SWAP_LE_BE: |
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105 * @in: input value |
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106 * |
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107 * Swap byte order of a 32-bit floating point value (float). |
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108 */ |
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109 inline static gfloat |
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110 GFLOAT_SWAP_LE_BE(gfloat in) |
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111 { |
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112 union |
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113 { |
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114 guint32 i; |
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115 gfloat f; |
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116 } u; |
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117 |
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118 u.f = in; |
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119 u.i = GUINT32_SWAP_LE_BE (u.i); |
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120 return u.f; |
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121 } |
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122 |
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123 /** |
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124 * GDOUBLE_SWAP_LE_BE: |
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125 * @in: input value |
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126 * |
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127 * Swap byte order of a 64-bit floating point value (double). |
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128 */ |
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129 inline static gdouble |
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130 GDOUBLE_SWAP_LE_BE(gdouble in) |
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131 { |
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132 union |
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133 { |
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134 guint64 i; |
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135 gdouble d; |
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136 } u; |
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137 |
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138 u.d = in; |
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139 u.i = GUINT64_SWAP_LE_BE (u.i); |
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140 return u.d; |
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141 } |
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142 |
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143 /** |
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144 * GDOUBLE_TO_LE: |
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145 * @val: value |
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146 * |
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147 * Convert 64-bit floating point value (double) from native byte order into |
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148 * little endian byte order. |
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149 */ |
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150 /** |
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151 * GDOUBLE_TO_BE: |
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152 * @val: value |
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153 * |
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154 * Convert 64-bit floating point value (double) from native byte order into |
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155 * big endian byte order. |
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156 */ |
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157 /** |
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158 * GDOUBLE_FROM_LE: |
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159 * @val: value |
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160 * |
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161 * Convert 64-bit floating point value (double) from little endian byte order |
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162 * into native byte order. |
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163 */ |
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164 /** |
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165 * GDOUBLE_FROM_BE: |
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166 * @val: value |
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167 * |
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168 * Convert 64-bit floating point value (double) from big endian byte order |
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169 * into native byte order. |
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170 */ |
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171 |
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172 /** |
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173 * GFLOAT_TO_LE: |
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174 * @val: value |
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175 * |
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176 * Convert 32-bit floating point value (float) from native byte order into |
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177 * little endian byte order. |
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178 */ |
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179 /** |
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180 * GFLOAT_TO_BE: |
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181 * @val: value |
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182 * |
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183 * Convert 32-bit floating point value (float) from native byte order into |
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184 * big endian byte order. |
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185 */ |
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186 /** |
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187 * GFLOAT_FROM_LE: |
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188 * @val: value |
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189 * |
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190 * Convert 32-bit floating point value (float) from little endian byte order |
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191 * into native byte order. |
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192 */ |
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193 /** |
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194 * GFLOAT_FROM_BE: |
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195 * @val: value |
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196 * |
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197 * Convert 32-bit floating point value (float) from big endian byte order |
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198 * into native byte order. |
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199 */ |
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200 |
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201 #if G_BYTE_ORDER == G_LITTLE_ENDIAN |
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202 #define GFLOAT_TO_LE(val) ((gfloat) (val)) |
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203 #define GFLOAT_TO_BE(val) (GFLOAT_SWAP_LE_BE (val)) |
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204 #define GDOUBLE_TO_LE(val) ((gdouble) (val)) |
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205 #define GDOUBLE_TO_BE(val) (GDOUBLE_SWAP_LE_BE (val)) |
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206 |
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207 #elif G_BYTE_ORDER == G_BIG_ENDIAN |
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208 #define GFLOAT_TO_LE(val) (GFLOAT_SWAP_LE_BE (val)) |
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209 #define GFLOAT_TO_BE(val) ((gfloat) (val)) |
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210 #define GDOUBLE_TO_LE(val) (GDOUBLE_SWAP_LE_BE (val)) |
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211 #define GDOUBLE_TO_BE(val) ((gdouble) (val)) |
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212 |
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213 #else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ |
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214 #error unknown ENDIAN type |
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215 #endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ |
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216 |
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217 #define GFLOAT_FROM_LE(val) (GFLOAT_TO_LE (val)) |
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218 #define GFLOAT_FROM_BE(val) (GFLOAT_TO_BE (val)) |
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219 #define GDOUBLE_FROM_LE(val) (GDOUBLE_TO_LE (val)) |
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220 #define GDOUBLE_FROM_BE(val) (GDOUBLE_TO_BE (val)) |
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221 |
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222 G_END_DECLS |
99 G_END_DECLS |
223 |
100 |
224 #endif /* __FLOATCAST_H__ */ |
101 #endif /* __FLOATCAST_H__ */ |
225 |
102 |