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<li class="navelem"><a class="el" href="dir_8d855866ba5d436d839c7fc557836cd9.html">libavutil</a></li> </ul>
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<div class="title">imgutils.h</div> </div>
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<a href="imgutils_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * This file is part of FFmpeg.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * License as published by the Free Software Foundation; either</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifndef AVUTIL_IMGUTILS_H</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_IMGUTILS_H</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * @file</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * misc image utilities</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @addtogroup lavu_picture</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="avutil_8h.html">avutil.h</a>"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="pixdesc_8h.html">pixdesc.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="rational_8h.html">rational.h</a>"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * Compute the max pixel step for each plane of an image with a</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * format described by pixdesc.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * The pixel step is the distance in bytes between the first byte of</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * the group of bytes which describe a pixel component and the first</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * byte of the successive group in the same plane for the same</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * component.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * @param max_pixsteps an array which is filled with the max pixel step</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * for each plane. Since a plane may contain different pixel</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * components, the computed max_pixsteps[plane] is relative to the</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * component in the plane with the max pixel step.</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * @param max_pixstep_comps an array which is filled with the component</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * for each plane which has the max pixel step. May be NULL.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keywordtype">void</span> <a class="code" href="group__lavu__picture.html#gad3af84de3a86a9ebb71715e3c0ebf627">av_image_fill_max_pixsteps</a>(<span class="keywordtype">int</span> max_pixsteps[4], <span class="keywordtype">int</span> max_pixstep_comps[4],</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">const</span> <a class="code" href="structAVPixFmtDescriptor.html">AVPixFmtDescriptor</a> *pixdesc);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * Compute the size of an image line with format pix_fmt and width</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * width for the plane plane.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> * @return the computed size in bytes</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga8eddd074d5eb6a235591013675ac1055">av_image_get_linesize</a>(<span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> plane);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * Fill plane linesizes for an image with pixel format pix_fmt and</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> * width width.</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * @param linesizes array to be filled with the linesize for each plane</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * @return >= 0 in case of success, a negative error code otherwise</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#gaccd7fda79188060dadb28408223946ef">av_image_fill_linesizes</a>(<span class="keywordtype">int</span> linesizes[4], <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * Fill plane data pointers for an image with pixel format pix_fmt and</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * height height.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * @param data pointers array to be filled with the pointer for each image plane</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * @param ptr the pointer to a buffer which will contain the image</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * @param linesizes the array containing the linesize for each</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * plane, should be filled by av_image_fill_linesizes()</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> * @return the size in bytes required for the image buffer, a negative</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * error code in case of failure</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga4513d36f527c1476e89845631d975542">av_image_fill_pointers</a>(uint8_t *data[4], <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>,</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  uint8_t *ptr, <span class="keyword">const</span> <span class="keywordtype">int</span> linesizes[4]);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"></span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * Allocate an image with size w and h and pixel format pix_fmt, and</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> * fill pointers and linesizes accordingly.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> * The allocated image buffer has to be freed by using</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> * av_freep(&pointers[0]).</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * @param align the value to use for buffer size alignment</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * @return the size in bytes required for the image buffer, a negative</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * error code in case of failure</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga841e0a89a642e24141af1918a2c10448">av_image_alloc</a>(uint8_t *pointers[4], <span class="keywordtype">int</span> linesizes[4],</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h, <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> align);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"></span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * Copy image plane from src to dst.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> * That is, copy "height" number of lines of "bytewidth" bytes each.</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> * The first byte of each successive line is separated by *_linesize</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> * bytes.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> * bytewidth must be contained by both absolute values of dst_linesize</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> * and src_linesize, otherwise the function behavior is undefined.</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * @param dst_linesize linesize for the image plane in dst</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> * @param src_linesize linesize for the image plane in src</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keywordtype">void</span> <a class="code" href="group__lavu__picture.html#ga735cb949320867e9c2fffcb327d0ece2">av_image_copy_plane</a>(uint8_t *dst, <span class="keywordtype">int</span> dst_linesize,</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> uint8_t *src, <span class="keywordtype">int</span> src_linesize,</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">int</span> bytewidth, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"></span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> * Copy image in src_data to dst_data.</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * @param dst_linesizes linesizes for the image in dst_data</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> * @param src_linesizes linesizes for the image in src_data</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keywordtype">void</span> <a class="code" href="group__lavu__picture.html#ga6b5a267e202daadf81cbde6584055d1e">av_image_copy</a>(uint8_t *dst_data[4], <span class="keywordtype">int</span> dst_linesizes[4],</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">const</span> uint8_t *src_data[4], <span class="keyword">const</span> <span class="keywordtype">int</span> src_linesizes[4],</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"></span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * Setup the data pointers and linesizes based on the specified image</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * parameters and the provided array.</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> * The fields of the given image are filled in by using the src</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> * address which points to the image data buffer. Depending on the</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * specified pixel format, one or multiple image data pointers and</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * line sizes will be set. If a planar format is specified, several</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * pointers will be set pointing to the different picture planes and</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * the line sizes of the different planes will be stored in the</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * lines_sizes array. Call with src == NULL to get the required</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> * size for the src buffer.</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * To allocate the buffer and fill in the dst_data and dst_linesize in</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> * one call, use av_image_alloc().</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> * @param dst_data data pointers to be filled in</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> * @param dst_linesizes linesizes for the image in dst_data to be filled in</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> * @param src buffer which will contain or contains the actual image data, can be NULL</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> * @param pix_fmt the pixel format of the image</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> * @param width the width of the image in pixels</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"> * @param height the height of the image in pixels</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> * @param align the value used in src for linesize alignment</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> * @return the size in bytes required for src, a negative error code</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> * in case of failure</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga5b6ead346a70342ae8a303c16d2b3629">av_image_fill_arrays</a>(uint8_t *dst_data[4], <span class="keywordtype">int</span> dst_linesize[4],</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">const</span> uint8_t *src,</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <span class="keywordtype">int</span> align);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"></span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> * Return the size in bytes of the amount of data required to store an</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> * image with the given parameters.</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> * @param[in] align the assumed linesize alignment</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga24a67963c3ae0054a2a4bab35930e694">av_image_get_buffer_size</a>(<span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <span class="keywordtype">int</span> align);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"></span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> * Copy image data from an image into a buffer.</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> * av_image_get_buffer_size() can be used to compute the required size</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * for the buffer to fill.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> * @param dst a buffer into which picture data will be copied</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> * @param dst_size the size in bytes of dst</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> * @param src_data pointers containing the source image data</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"> * @param src_linesizes linesizes for the image in src_data</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"> * @param pix_fmt the pixel format of the source image</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> * @param width the width of the source image in pixels</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * @param height the height of the source image in pixels</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> * @param align the assumed linesize alignment for dst</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * @return the number of bytes written to dst, or a negative value</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> * (error code) on error</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga6f8576f1ef0c2d9a9f7c5ac7f9a28c52">av_image_copy_to_buffer</a>(uint8_t *dst, <span class="keywordtype">int</span> dst_size,</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">const</span> uint8_t * <span class="keyword">const</span> src_data[4], <span class="keyword">const</span> <span class="keywordtype">int</span> src_linesize[4],</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <span class="keywordtype">int</span> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <span class="keywordtype">int</span> align);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"></span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> * Check if the given dimension of an image is valid, meaning that all</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> * bytes of the image can be addressed with a signed int.</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> * @param w the width of the picture</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> * @param h the height of the picture</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> * @param log_offset the offset to sum to the log level for logging with log_ctx</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> * @param log_ctx the parent logging context, it may be NULL</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> * @return >= 0 if valid, a negative error code otherwise</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#ga3a867b6180ddad1e0c382ef0c5940b8e">av_image_check_size</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> w, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> h, <span class="keywordtype">int</span> log_offset, <span class="keywordtype">void</span> *log_ctx);</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"></span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> * Check if the given sample aspect ratio of an image is valid.</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> * It is considered invalid if the denominator is 0 or if applying the ratio</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"> * to the image size would make the smaller dimension less than 1. If the</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> * sar numerator is 0, it is considered unknown and will return as valid.</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment"> * @param w width of the image</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment"> * @param h height of the image</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment"> * @param sar sample aspect ratio of the image</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment"> * @return 0 if valid, a negative AVERROR code otherwise</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__picture.html#gada0f86cd0051ff8b9eef214e83e7ad1f">av_image_check_sar</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> w, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> h, <a class="code" href="structAVRational.html">AVRational</a> sar);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"></span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment"> * @}</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_IMGUTILS_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="group__lavu__picture_html_ga8eddd074d5eb6a235591013675ac1055"><div class="ttname"><a href="group__lavu__picture.html#ga8eddd074d5eb6a235591013675ac1055">av_image_get_linesize</a></div><div class="ttdeci">int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)</div><div class="ttdoc">Compute the size of an image line with format pix_fmt and width width for the plane plane...</div></div>
<div class="ttc" id="demuxing__decoding_8c_html_a7331e302ea7bb48e0b605a069576e135"><div class="ttname"><a href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a></div><div class="ttdeci">static enum AVPixelFormat pix_fmt</div><div class="ttdef"><b>Definition:</b> <a href="demuxing__decoding_8c_source.html#l00040">demuxing_decoding.c:40</a></div></div>
<div class="ttc" id="group__lavu__picture_html_ga6f8576f1ef0c2d9a9f7c5ac7f9a28c52"><div class="ttname"><a href="group__lavu__picture.html#ga6f8576f1ef0c2d9a9f7c5ac7f9a28c52">av_image_copy_to_buffer</a></div><div class="ttdeci">int av_image_copy_to_buffer(uint8_t *dst, int dst_size, const uint8_t *const src_data[4], const int src_linesize[4], enum AVPixelFormat pix_fmt, int width, int height, int align)</div><div class="ttdoc">Copy image data from an image into a buffer. </div></div>
<div class="ttc" id="group__lavu__picture_html_ga841e0a89a642e24141af1918a2c10448"><div class="ttname"><a href="group__lavu__picture.html#ga841e0a89a642e24141af1918a2c10448">av_image_alloc</a></div><div class="ttdeci">int av_image_alloc(uint8_t *pointers[4], int linesizes[4], int w, int h, enum AVPixelFormat pix_fmt, int align)</div><div class="ttdoc">Allocate an image with size w and h and pixel format pix_fmt, and fill pointers and linesizes accordi...</div></div>
<div class="ttc" id="group__lavu__picture_html_ga5b6ead346a70342ae8a303c16d2b3629"><div class="ttname"><a href="group__lavu__picture.html#ga5b6ead346a70342ae8a303c16d2b3629">av_image_fill_arrays</a></div><div class="ttdeci">int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4], const uint8_t *src, enum AVPixelFormat pix_fmt, int width, int height, int align)</div><div class="ttdoc">Setup the data pointers and linesizes based on the specified image parameters and the provided array...</div></div>
<div class="ttc" id="avutil_8h_html"><div class="ttname"><a href="avutil_8h.html">avutil.h</a></div><div class="ttdoc">external API header </div></div>
<div class="ttc" id="group__lavu__picture_html_gad3af84de3a86a9ebb71715e3c0ebf627"><div class="ttname"><a href="group__lavu__picture.html#gad3af84de3a86a9ebb71715e3c0ebf627">av_image_fill_max_pixsteps</a></div><div class="ttdeci">void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4], const AVPixFmtDescriptor *pixdesc)</div><div class="ttdoc">Compute the max pixel step for each plane of an image with a format described by pixdesc. </div></div>
<div class="ttc" id="group__lavu__picture_html_gada0f86cd0051ff8b9eef214e83e7ad1f"><div class="ttname"><a href="group__lavu__picture.html#gada0f86cd0051ff8b9eef214e83e7ad1f">av_image_check_sar</a></div><div class="ttdeci">int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)</div><div class="ttdoc">Check if the given sample aspect ratio of an image is valid. </div></div>
<div class="ttc" id="group__lavu__picture_html_ga24a67963c3ae0054a2a4bab35930e694"><div class="ttname"><a href="group__lavu__picture.html#ga24a67963c3ae0054a2a4bab35930e694">av_image_get_buffer_size</a></div><div class="ttdeci">int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)</div><div class="ttdoc">Return the size in bytes of the amount of data required to store an image with the given parameters...</div></div>
<div class="ttc" id="group__lavu__picture_html_ga6b5a267e202daadf81cbde6584055d1e"><div class="ttname"><a href="group__lavu__picture.html#ga6b5a267e202daadf81cbde6584055d1e">av_image_copy</a></div><div class="ttdeci">void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)</div><div class="ttdoc">Copy image in src_data to dst_data. </div></div>
<div class="ttc" id="group__lavu__picture_html_ga3a867b6180ddad1e0c382ef0c5940b8e"><div class="ttname"><a href="group__lavu__picture.html#ga3a867b6180ddad1e0c382ef0c5940b8e">av_image_check_size</a></div><div class="ttdeci">int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)</div><div class="ttdoc">Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...</div></div>
<div class="ttc" id="pixdesc_8h_html"><div class="ttname"><a href="pixdesc_8h.html">pixdesc.h</a></div></div>
<div class="ttc" id="group__lavu__picture_html_ga4513d36f527c1476e89845631d975542"><div class="ttname"><a href="group__lavu__picture.html#ga4513d36f527c1476e89845631d975542">av_image_fill_pointers</a></div><div class="ttdeci">int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height, uint8_t *ptr, const int linesizes[4])</div><div class="ttdoc">Fill plane data pointers for an image with pixel format pix_fmt and height height. </div></div>
<div class="ttc" id="structAVPixFmtDescriptor_html"><div class="ttname"><a href="structAVPixFmtDescriptor.html">AVPixFmtDescriptor</a></div><div class="ttdoc">Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...</div><div class="ttdef"><b>Definition:</b> <a href="pixdesc_8h_source.html#l00081">pixdesc.h:81</a></div></div>
<div class="ttc" id="group__lavu__picture_html_gaccd7fda79188060dadb28408223946ef"><div class="ttname"><a href="group__lavu__picture.html#gaccd7fda79188060dadb28408223946ef">av_image_fill_linesizes</a></div><div class="ttdeci">int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)</div><div class="ttdoc">Fill plane linesizes for an image with pixel format pix_fmt and width width. </div></div>
<div class="ttc" id="structAVRational_html"><div class="ttname"><a href="structAVRational.html">AVRational</a></div><div class="ttdoc">rational number numerator/denominator </div><div class="ttdef"><b>Definition:</b> <a href="rational_8h_source.html#l00043">rational.h:43</a></div></div>
<div class="ttc" id="rational_8h_html"><div class="ttname"><a href="rational_8h.html">rational.h</a></div><div class="ttdoc">rational numbers </div></div>
<div class="ttc" id="demuxing__decoding_8c_html_ad12fc34ce789bce6c8a05d8a17138534"><div class="ttname"><a href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a></div><div class="ttdeci">static int height</div><div class="ttdef"><b>Definition:</b> <a href="demuxing__decoding_8c_source.html#l00039">demuxing_decoding.c:39</a></div></div>
<div class="ttc" id="group__lavu__picture_html_ga735cb949320867e9c2fffcb327d0ece2"><div class="ttname"><a href="group__lavu__picture.html#ga735cb949320867e9c2fffcb327d0ece2">av_image_copy_plane</a></div><div class="ttdeci">void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)</div><div class="ttdoc">Copy image plane from src to dst. </div></div>
<div class="ttc" id="pixfmt_8h_html_a9a8e335cf3be472042bc9f0cf80cd4c5"><div class="ttname"><a href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a></div><div class="ttdeci">AVPixelFormat</div><div class="ttdoc">Pixel format. </div><div class="ttdef"><b>Definition:</b> <a href="pixfmt_8h_source.html#l00061">pixfmt.h:61</a></div></div>
<div class="ttc" id="demuxing__decoding_8c_html_a2474a5474cbff19523a51eb1de01cda4"><div class="ttname"><a href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a></div><div class="ttdeci">static int width</div><div class="ttdef"><b>Definition:</b> <a href="demuxing__decoding_8c_source.html#l00039">demuxing_decoding.c:39</a></div></div>
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