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<div class="title">sparse_array.h File Reference</div> </div>
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<p>Sparse array management.
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include "<a class="el" href="opj__includes_8h_source.html">opj_includes.h</a>"</code><br />
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<p><a href="sparse__array_8h_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a>
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Typedefs</h2></td></tr>
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<tr class="memitem:gab63770624f4ec03e6e022c6a0b80e6ff"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="structopj__sparse__array__int32.html">opj_sparse_array_int32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">opj_sparse_array_int32_t</a></td></tr>
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<tr class="memdesc:gab63770624f4ec03e6e022c6a0b80e6ff"><td class="mdescLeft"> </td><td class="mdescRight">Opaque type for sparse arrays that contain int32 values. <a href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">More...</a><br /></td></tr>
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<tr class="separator:gab63770624f4ec03e6e022c6a0b80e6ff"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga41953de4fab74677337c2597a67c9843"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">opj_sparse_array_int32_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga41953de4fab74677337c2597a67c9843">opj_sparse_array_int32_create</a> (<a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> width, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> height, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> block_width, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> block_height)</td></tr>
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<tr class="memdesc:ga41953de4fab74677337c2597a67c9843"><td class="mdescLeft"> </td><td class="mdescRight">Creates a new sparse array. <a href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga41953de4fab74677337c2597a67c9843">More...</a><br /></td></tr>
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<tr class="separator:ga41953de4fab74677337c2597a67c9843"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gad70f920d05b4915853b474d010a9a336"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gad70f920d05b4915853b474d010a9a336">opj_sparse_array_int32_free</a> (<a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">opj_sparse_array_int32_t</a> *sa)</td></tr>
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<tr class="memdesc:gad70f920d05b4915853b474d010a9a336"><td class="mdescLeft"> </td><td class="mdescRight">Frees a sparse array. <a href="group___s_p_a_r_s_e___a_r_r_a_y.html#gad70f920d05b4915853b474d010a9a336">More...</a><br /></td></tr>
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<tr class="separator:gad70f920d05b4915853b474d010a9a336"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga2b5c5075af6a30d35569e4378931ed4c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="openjpeg_8h.html#abb5dad6294f4611f1925388e919b16f4">OPJ_BOOL</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga2b5c5075af6a30d35569e4378931ed4c">opj_sparse_array_is_region_valid</a> (const <a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">opj_sparse_array_int32_t</a> *sa, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> x0, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> y0, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> x1, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> y1)</td></tr>
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<tr class="memdesc:ga2b5c5075af6a30d35569e4378931ed4c"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether region bounds are valid (non empty and within array bounds) <a href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga2b5c5075af6a30d35569e4378931ed4c">More...</a><br /></td></tr>
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<tr class="separator:ga2b5c5075af6a30d35569e4378931ed4c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga092675bfa99d062ce36fa45aff4766da"><td class="memItemLeft" align="right" valign="top"><a class="el" href="openjpeg_8h.html#abb5dad6294f4611f1925388e919b16f4">OPJ_BOOL</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga092675bfa99d062ce36fa45aff4766da">opj_sparse_array_int32_read</a> (const <a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">opj_sparse_array_int32_t</a> *sa, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> x0, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> y0, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> x1, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> y1, <a class="el" href="openjpeg_8h.html#a3cec91ef9e73677f0dbd60d4e42401b9">OPJ_INT32</a> *dest, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> dest_col_stride, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> dest_line_stride, <a class="el" href="openjpeg_8h.html#abb5dad6294f4611f1925388e919b16f4">OPJ_BOOL</a> forgiving)</td></tr>
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<tr class="memdesc:ga092675bfa99d062ce36fa45aff4766da"><td class="mdescLeft"> </td><td class="mdescRight">Read the content of a rectangular region of the sparse array into a user buffer. <a href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga092675bfa99d062ce36fa45aff4766da">More...</a><br /></td></tr>
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<tr class="separator:ga092675bfa99d062ce36fa45aff4766da"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga174b3ef4cb89af58cdd7c2b9f0a20559"><td class="memItemLeft" align="right" valign="top"><a class="el" href="openjpeg_8h.html#abb5dad6294f4611f1925388e919b16f4">OPJ_BOOL</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga174b3ef4cb89af58cdd7c2b9f0a20559">opj_sparse_array_int32_write</a> (<a class="el" href="group___s_p_a_r_s_e___a_r_r_a_y.html#gab63770624f4ec03e6e022c6a0b80e6ff">opj_sparse_array_int32_t</a> *sa, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> x0, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> y0, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> x1, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> y1, const <a class="el" href="openjpeg_8h.html#a3cec91ef9e73677f0dbd60d4e42401b9">OPJ_INT32</a> *src, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> src_col_stride, <a class="el" href="openjpeg_8h.html#a4cb1e6e6b6ef2df499d5c02f7df54cbb">OPJ_UINT32</a> src_line_stride, <a class="el" href="openjpeg_8h.html#abb5dad6294f4611f1925388e919b16f4">OPJ_BOOL</a> forgiving)</td></tr>
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<tr class="memdesc:ga174b3ef4cb89af58cdd7c2b9f0a20559"><td class="mdescLeft"> </td><td class="mdescRight">Write the content of a rectangular region into the sparse array from a user buffer. <a href="group___s_p_a_r_s_e___a_r_r_a_y.html#ga174b3ef4cb89af58cdd7c2b9f0a20559">More...</a><br /></td></tr>
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<tr class="separator:ga174b3ef4cb89af58cdd7c2b9f0a20559"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Sparse array management. </p>
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<p>The functions in this file manage sparse arrays. Sparse arrays are arrays with potential big dimensions, but with very few samples actually set. Such sparse arrays require allocating a low amount of memory, by just allocating memory for blocks of the array that are set. The minimum memory allocation unit is a a block. There is a trade-off to pick up an appropriate dimension for blocks. If it is too big, and pixels set are far from each other, too much memory will be used. If blocks are too small, the book-keeping costs of blocks will raise. </p>
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