/usr/share/gtk-doc/html/cogl-2.0-experimental/cogl-2.0-experimental-Bitmap.html is in libcogl-doc 1.16.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Bitmap</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="Cogl 2.0 Reference Manual">
<link rel="up" href="cogl-textures.html" title="Textures">
<link rel="prev" href="cogl-textures.html" title="Textures">
<link rel="next" href="cogl-2.0-experimental-The-Texture-Interface.html" title="The Texture Interface">
<meta name="generator" content="GTK-Doc V1.19 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="cogl-textures.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="cogl-textures.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">Cogl 2.0 Reference Manual</th>
<td><a accesskey="n" href="cogl-2.0-experimental-The-Texture-Interface.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#cogl-2.0-experimental-Bitmap.synopsis" class="shortcut">Top</a>
|
<a href="#cogl-2.0-experimental-Bitmap.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry">
<a name="cogl-2.0-experimental-Bitmap"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="cogl-2.0-experimental-Bitmap.top_of_page"></a>Bitmap</span></h2>
<p>Bitmap — Functions for loading images</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="cogl-2.0-experimental-Bitmap.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"> <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap">CoglBitmap</a>;
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a> <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-is-bitmap" title="cogl_is_bitmap ()">cogl_is_bitmap</a> (<em class="parameter"><code><span class="type">void</span> *object</code></em>);
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-from-file" title="cogl_bitmap_new_from_file ()">cogl_bitmap_new_from_file</a> (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-from-buffer" title="cogl_bitmap_new_from_buffer ()">cogl_bitmap_new_from_buffer</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> *buffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>,
<em class="parameter"><code><span class="type">int</span> offset</code></em>);
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-with-size" title="cogl_bitmap_new_with_size ()">cogl_bitmap_new_with_size</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> width</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> height</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>);
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-for-data" title="cogl_bitmap_new_for_data ()">cogl_bitmap_new_for_data</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *data</code></em>);
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="returnvalue">CoglPixelFormat</span></a> <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-format" title="cogl_bitmap_get_format ()">cogl_bitmap_get_format</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-width" title="cogl_bitmap_get_width ()">cogl_bitmap_get_width</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-height" title="cogl_bitmap_get_height ()">cogl_bitmap_get_height</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);
<span class="returnvalue">int</span> <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-rowstride" title="cogl_bitmap_get_rowstride ()">cogl_bitmap_get_rowstride</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);
<a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="returnvalue">CoglPixelBuffer</span></a> * <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-buffer" title="cogl_bitmap_get_buffer ()">cogl_bitmap_get_buffer</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a> <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-size-from-file" title="cogl_bitmap_get_size_from_file ()">cogl_bitmap_get_size_from_file</a> (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><span class="type">int</span> *width</code></em>,
<em class="parameter"><code><span class="type">int</span> *height</code></em>);
<a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="returnvalue">CoglTexture</span></a> * <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-texture-new-from-bitmap" title="cogl_texture_new_from_bitmap ()">cogl_texture_new_from_bitmap</a> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglTextureFlags" title="enum CoglTextureFlags"><span class="type">CoglTextureFlags</span></a> flags</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> internal_format</code></em>);
#define <a class="link" href="cogl-2.0-experimental-Bitmap.html#COGL-BITMAP-ERROR:CAPS" title="COGL_BITMAP_ERROR">COGL_BITMAP_ERROR</a>
enum <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmapError" title="enum CoglBitmapError">CoglBitmapError</a>;
</pre>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.description"></a><h2>Description</h2>
<p>
Cogl allows loading image data into memory as CoglBitmaps without
loading them immediately into GPU textures.
</p>
<p>
<a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> is available since Cogl 1.0
</p>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Bitmap.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="CoglBitmap"></a><h3>CoglBitmap</h3>
<pre class="programlisting">typedef struct _CoglBitmap CoglBitmap;</pre>
</div>
<hr>
<div class="refsect2">
<a name="cogl-is-bitmap"></a><h3>cogl_is_bitmap ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a> cogl_is_bitmap (<em class="parameter"><code><span class="type">void</span> *object</code></em>);</pre>
<p>
Checks whether <em class="parameter"><code>object</code></em> is a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>a <a class="link" href="cogl-2.0-experimental-The-Object-Interface.html#CoglObject" title="CoglObject"><span class="type">CoglObject</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the passed <em class="parameter"><code>object</code></em> represents a bitmap,
and <code class="literal">FALSE</code> otherwise</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-from-file"></a><h3>cogl_bitmap_new_from_file ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * cogl_bitmap_new_from_file (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>
Loads an image file from disk. This function can be safely called from
within a thread.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>the file to load.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> or <code class="literal">NULL</code>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> to the new loaded
image data, or <code class="literal">NULL</code> if loading the image failed. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-from-buffer"></a><h3>cogl_bitmap_new_from_buffer ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * cogl_bitmap_new_from_buffer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> *buffer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>,
<em class="parameter"><code><span class="type">int</span> offset</code></em>);</pre>
<p>
Wraps some image data that has been uploaded into a <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> as
a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>. The data is not copied in this process.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> containing image data</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>The <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> defining the format of the image data
in the given <em class="parameter"><code>buffer</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>The width of the image data in the given <em class="parameter"><code>buffer</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>The height of the image data in the given <em class="parameter"><code>buffer</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rowstride</code></em> :</span></p></td>
<td>The rowstride in bytes of the image data in the given <em class="parameter"><code>buffer</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>offset</code></em> :</span></p></td>
<td>The offset into the given <em class="parameter"><code>buffer</code></em> to the first pixel that
should be considered part of the <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> encapsulating the given <em class="parameter"><code>buffer</code></em>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-with-size"></a><h3>cogl_bitmap_new_with_size ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * cogl_bitmap_new_with_size (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> width</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> height</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>);</pre>
<p>
Creates a new <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> with the given width, height and format.
The initial contents of the bitmap are undefined.
</p>
<p>
The data for the bitmap will be stored in a newly created
<a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="type">CoglPixelBuffer</span></a>. You can get a pointer to the pixel buffer using
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-buffer" title="cogl_bitmap_get_buffer ()"><code class="function">cogl_bitmap_get_buffer()</code></a>. The <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglBuffer" title="CoglBuffer"><span class="type">CoglBuffer</span></a> API can then be
used to fill the bitmap with data.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>Cogl will try its best to provide a hardware array you can
map, write into and effectively do a zero copy upload when creating
a texture from it with <a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-texture-new-from-bitmap" title="cogl_texture_new_from_bitmap ()"><code class="function">cogl_texture_new_from_bitmap()</code></a>. For various
reasons, such arrays are likely to have a stride larger than width
* bytes_per_pixel. The user must take the stride into account when
writing into it. The stride can be retrieved with
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-get-rowstride" title="cogl_bitmap_get_rowstride ()"><code class="function">cogl_bitmap_get_rowstride()</code></a>.</div>
<p>
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>width of the bitmap in pixels</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>height of the bitmap in pixels</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>the format of the pixels the array will store</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="type">CoglPixelBuffer</span></a> representing the
newly created array or <code class="literal">NULL</code> on failure. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-new-for-data"></a><h3>cogl_bitmap_new_for_data ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="returnvalue">CoglBitmap</span></a> * cogl_bitmap_new_for_data (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> format</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> *data</code></em>);</pre>
<p>
Creates a bitmap using some existing data. The data is not copied
so the application must keep the buffer alive for the lifetime of
the <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>. This can be used for example with
<a class="link" href="cogl-2.0-experimental-CoglFramebuffer---The-Framebuffer-Interface.html#cogl-framebuffer-read-pixels-into-bitmap" title="cogl_framebuffer_read_pixels_into_bitmap ()"><code class="function">cogl_framebuffer_read_pixels_into_bitmap()</code></a> to read data directly
into an application buffer with the specified rowstride.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>The width of the bitmap.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>The height of the bitmap.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>format</code></em> :</span></p></td>
<td>The format of the pixel data.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rowstride</code></em> :</span></p></td>
<td>The rowstride of the bitmap (the number of bytes from
the start of one row of the bitmap to the next).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>A pointer to the data. The bitmap will take ownership of this data.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A new <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-format"></a><h3>cogl_bitmap_get_format ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="returnvalue">CoglPixelFormat</span></a> cogl_bitmap_get_format (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> that the data for the bitmap is in.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-width"></a><h3>cogl_bitmap_get_width ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_bitmap_get_width (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the width of the bitmap</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-height"></a><h3>cogl_bitmap_get_height ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_bitmap_get_height (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the height of the bitmap</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-rowstride"></a><h3>cogl_bitmap_get_rowstride ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> cogl_bitmap_get_rowstride (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the rowstride of the bitmap. This is the number of
bytes between the address of start of one row to the address of the
next row in the image.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-buffer"></a><h3>cogl_bitmap_get_buffer ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="returnvalue">CoglPixelBuffer</span></a> * cogl_bitmap_get_buffer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>);</pre>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the <a class="link" href="cogl-2.0-experimental-CoglBuffer---The-Buffer-Interface.html#CoglPixelBuffer" title="CoglPixelBuffer"><span class="type">CoglPixelBuffer</span></a> that this
buffer uses for storage. Note that if the bitmap was created with
<a class="link" href="cogl-2.0-experimental-Bitmap.html#cogl-bitmap-new-from-file" title="cogl_bitmap_new_from_file ()"><code class="function">cogl_bitmap_new_from_file()</code></a> then it will not actually be using a
pixel buffer and this function will return <code class="literal">NULL</code>. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: Unstable</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-bitmap-get-size-from-file"></a><h3>cogl_bitmap_get_size_from_file ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a> cogl_bitmap_get_size_from_file (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>,
<em class="parameter"><code><span class="type">int</span> *width</code></em>,
<em class="parameter"><code><span class="type">int</span> *height</code></em>);</pre>
<p>
Parses an image file enough to extract the width and height
of the bitmap.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>the file to check</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>return location for the bitmap width, or <code class="literal">NULL</code>. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>return location for the bitmap height, or <code class="literal">NULL</code>. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the image was successfully parsed</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-texture-new-from-bitmap"></a><h3>cogl_texture_new_from_bitmap ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="returnvalue">CoglTexture</span></a> * cogl_texture_new_from_bitmap (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> *bitmap</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglTextureFlags" title="enum CoglTextureFlags"><span class="type">CoglTextureFlags</span></a> flags</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> internal_format</code></em>);</pre>
<p>
Creates a <a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="type">CoglTexture</span></a> from a <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a>.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bitmap</code></em> :</span></p></td>
<td>A <a class="link" href="cogl-2.0-experimental-Bitmap.html#CoglBitmap" title="CoglBitmap"><span class="type">CoglBitmap</span></a> pointer</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>Optional flags for the texture, or <a class="link" href="cogl-2.0-experimental-Common-Types.html#COGL-TEXTURE-NONE:CAPS"><code class="literal">COGL_TEXTURE_NONE</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>internal_format</code></em> :</span></p></td>
<td>the <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglPixelFormat" title="enum CoglPixelFormat"><span class="type">CoglPixelFormat</span></a> to use for the GPU storage of the
texture</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A newly created <a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="type">CoglTexture</span></a> or
<code class="literal">NULL</code> on failure. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="COGL-BITMAP-ERROR:CAPS"></a><h3>COGL_BITMAP_ERROR</h3>
<pre class="programlisting">#define COGL_BITMAP_ERROR (cogl_bitmap_error_quark ())
</pre>
<p>
<a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> domain for bitmap errors.
</p>
<p class="since">Since 1.4</p>
</div>
<hr>
<div class="refsect2">
<a name="CoglBitmapError"></a><h3>enum CoglBitmapError</h3>
<pre class="programlisting">typedef enum {
COGL_BITMAP_ERROR_FAILED,
COGL_BITMAP_ERROR_UNKNOWN_TYPE,
COGL_BITMAP_ERROR_CORRUPT_IMAGE
} CoglBitmapError;
</pre>
<p>
Error codes that can be thrown when performing bitmap
operations. Note that <code class="function">gdk_pixbuf_new_from_file()</code> can also throw
errors directly from the underlying image loading library. For
example, if GdkPixbuf is used then errors <span class="type">GdkPixbufError</span>s
will be used directly.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><a name="COGL-BITMAP-ERROR-FAILED:CAPS"></a><span class="term"><code class="literal">COGL_BITMAP_ERROR_FAILED</code></span></p></td>
<td>Generic failure code, something went
wrong.
</td>
</tr>
<tr>
<td><p><a name="COGL-BITMAP-ERROR-UNKNOWN-TYPE:CAPS"></a><span class="term"><code class="literal">COGL_BITMAP_ERROR_UNKNOWN_TYPE</code></span></p></td>
<td>Unknown image type.
</td>
</tr>
<tr>
<td><p><a name="COGL-BITMAP-ERROR-CORRUPT-IMAGE:CAPS"></a><span class="term"><code class="literal">COGL_BITMAP_ERROR_CORRUPT_IMAGE</code></span></p></td>
<td>An image file was broken somehow.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.4</p>
</div>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.19</div>
</body>
</html>
|