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<a href="samplefmt_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_SAMPLEFMT_H</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_SAMPLEFMT_H</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <stdint.h></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="avutil_8h.html">avutil.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="attributes_8h.html">attributes.h</a>"</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"></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"> * @addtogroup lavu_audio</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * @defgroup lavu_sampfmts Audio sample formats</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * Audio sample format enumeration and related convenience functions.</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"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> */</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">/**</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * Audio sample formats</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * - The data described by the sample format is always in native-endian order.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * Sample values can be expressed by native C types, hence the lack of a signed</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * 24-bit sample format even though it is a common raw audio data format.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * - The floating-point formats are based on full volume being in the range</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * [-1.0, 1.0]. Any values outside this range are beyond full volume level.</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * - The data layout as used in av_samples_fill_arrays() and elsewhere in FFmpeg</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * (such as AVFrame in libavcodec) is as follows:</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * @par</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * For planar sample formats, each audio channel is in a separate data plane,</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * and linesize is the buffer size, in bytes, for a single plane. All data</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * planes must be the same size. For packed sample formats, only the first data</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * plane is used, and samples for each channel are interleaved. In this case,</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * linesize is the buffer size, in bytes, for the 1 plane.</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> *</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"><a class="line" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5"> 59</a></span> <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> {</div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ac5d4bb5b0fb0dc7316fb3c7a73029912"> 60</a></span>  <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ac5d4bb5b0fb0dc7316fb3c7a73029912">AV_SAMPLE_FMT_NONE</a> = -1,</div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf0f66f21492f8fd5db6debb8b3f932a"> 61</a></span>  <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf0f66f21492f8fd5db6debb8b3f932a">AV_SAMPLE_FMT_U8</a>, <span class="comment">///< unsigned 8 bits</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aea6132df57aebc3f76e10665395c46af"> 62</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aea6132df57aebc3f76e10665395c46af">AV_SAMPLE_FMT_S16</a>, <span class="comment">///< signed 16 bits</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ab7ae6bb6718c07cd316778783a57a63b"> 63</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ab7ae6bb6718c07cd316778783a57a63b">AV_SAMPLE_FMT_S32</a>, <span class="comment">///< signed 32 bits</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a5251d62cc3c7f18e56bc8e0c48a27903"> 64</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a5251d62cc3c7f18e56bc8e0c48a27903">AV_SAMPLE_FMT_FLT</a>, <span class="comment">///< float</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ae35a2a6a7593723d9fe4bcefb2876606"> 65</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ae35a2a6a7593723d9fe4bcefb2876606">AV_SAMPLE_FMT_DBL</a>, <span class="comment">///< double</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span></div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a6ab0109a23af37e29ea3a7282c00d311"> 67</a></span>  <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a6ab0109a23af37e29ea3a7282c00d311">AV_SAMPLE_FMT_U8P</a>, <span class="comment">///< unsigned 8 bits, planar</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a35eaaad9da207aa4e63fa02fd67fae68"> 68</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a35eaaad9da207aa4e63fa02fd67fae68">AV_SAMPLE_FMT_S16P</a>, <span class="comment">///< signed 16 bits, planar</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aa215d25dfbf927aa362c837fed4b15a8"> 69</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aa215d25dfbf927aa362c837fed4b15a8">AV_SAMPLE_FMT_S32P</a>, <span class="comment">///< signed 32 bits, planar</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a2d21c520e4ab21100b6440ec2d81ba1b"> 70</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a2d21c520e4ab21100b6440ec2d81ba1b">AV_SAMPLE_FMT_FLTP</a>, <span class="comment">///< float, planar</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf1348382a7c7473a425e05530989ae5"> 71</a></span> <span class="comment"></span> <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf1348382a7c7473a425e05530989ae5">AV_SAMPLE_FMT_DBLP</a>, <span class="comment">///< double, planar</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span></div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a8c2ef4962274b33e2828fb9629c104fd"> 73</a></span>  <a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a8c2ef4962274b33e2828fb9629c104fd">AV_SAMPLE_FMT_NB</a> <span class="comment">///< Number of sample formats. DO NOT USE if linking dynamically</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span>};</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * Return the name of sample_fmt, or NULL if sample_fmt is not</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> * recognized.</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="group__lavu__sampfmts.html#ga31b9d149b2de9821a65f4f5612970838">av_get_sample_fmt_name</a>(<span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> * Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * on error.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> <a class="code" href="group__lavu__sampfmts.html#ga655c989b749667468e5e839e26fe63db">av_get_sample_fmt</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"></span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * Return the planar<->packed alternative form of the given sample format, or</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * AV_SAMPLE_FMT_NONE on error. If the passed sample_fmt is already in the</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * requested planar/packed format, the format returned is the same as the</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * input.</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="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> <a class="code" href="group__lavu__sampfmts.html#ga8e66c3f813ea02afcaa56a8a964c749a">av_get_alt_sample_fmt</a>(<span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt, <span class="keywordtype">int</span> planar);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span></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"> * Get the packed alternative form of the given sample format.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> * If the passed sample_fmt is already in packed format, the format returned is</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> * the same as the input.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> * @return the packed alternative form of the given sample format or</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> AV_SAMPLE_FMT_NONE on error.</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> <a class="code" href="group__lavu__sampfmts.html#ga7817ec0eff4dc6fc0962f31e6d138bca">av_get_packed_sample_fmt</a>(<span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"></span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> * Get the planar alternative form of the given sample format.</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> * If the passed sample_fmt is already in planar format, the format returned is</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * the same as the input.</span></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"> * @return the planar alternative form of the given sample format or</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> AV_SAMPLE_FMT_NONE on error.</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="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> <a class="code" href="group__lavu__sampfmts.html#ga82caf838259d95cc6c4fd87633bb0e19">av_get_planar_sample_fmt</a>(<span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"></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="comment"> * Generate a string corresponding to the sample format with</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> * sample_fmt, or a header if sample_fmt is negative.</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * @param buf the buffer where to write the string</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> * @param buf_size the size of buf</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * @param sample_fmt the number of the sample format to print the</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * corresponding info string, or a negative value to print the</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * corresponding header.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> * @return the pointer to the filled buffer or NULL if sample_fmt is</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> * unknown or in case of other errors</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keywordtype">char</span> *<a class="code" href="group__lavu__sampfmts.html#gabdc8c2172c33fe9d36cbedaf3c5f83bb">av_get_sample_fmt_string</a>(<span class="keywordtype">char</span> *buf, <span class="keywordtype">int</span> buf_size, <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"></span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * Return number of bytes per sample.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> * @param sample_fmt the sample format</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * @return number of bytes per sample or zero if unknown for the given</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> * sample format</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="keywordtype">int</span> <a class="code" href="group__lavu__sampfmts.html#ga0c3c218e1dd570ad4917c69a35a6c77d">av_get_bytes_per_sample</a>(<span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"></span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> * Check if the sample format is planar.</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"> * @param sample_fmt the sample format to inspect</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> * @return 1 if the sample format is planar, 0 if it is interleaved</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__sampfmts.html#ga06ba8a64dc4382c422789a5d0b6bf592">av_sample_fmt_is_planar</a>(<span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</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="comment">/**</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> * Get the required buffer size for the given audio parameters.</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> * @param[out] linesize calculated linesize, may be NULL</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> * @param nb_channels the number of channels</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> * @param nb_samples the number of samples in a single channel</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> * @param sample_fmt the sample format</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> * @param align buffer size alignment (0 = default, 1 = no alignment)</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> * @return required buffer size, or negative error code on failure</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__sampfmts.html#gaa7368bc4e3a366b688e81938ed55eb06">av_samples_get_buffer_size</a>(<span class="keywordtype">int</span> *linesize, <span class="keywordtype">int</span> nb_channels, <span class="keywordtype">int</span> nb_samples,</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt, <span class="keywordtype">int</span> align);</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">/**</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"> *</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * @defgroup lavu_sampmanip Samples manipulation</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"> * Functions that manipulate audio samples</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"></span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> * Fill plane data pointers and linesize for samples with sample</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * format sample_fmt.</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * The audio_data array is filled with the pointers to the samples data planes:</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> * for planar, set the start point of each channel's data within the buffer,</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> * for packed, set the start point of the entire buffer only.</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"> * The value pointed to by linesize is set to the aligned size of each</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"> * channel's data buffer for planar layout, or to the aligned size of the</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> * buffer for all channels for packed layout.</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"> * The buffer in buf must be big enough to contain all the samples</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> * (use av_samples_get_buffer_size() to compute its minimum size),</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment"> * otherwise the audio_data pointers will point to invalid data.</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> * @see enum AVSampleFormat</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> * The documentation for AVSampleFormat describes the data layout.</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> * @param[out] audio_data array to be filled with the pointer for each channel</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> * @param[out] linesize calculated linesize, may be NULL</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment"> * @param buf the pointer to a buffer containing the samples</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"> * @param nb_channels the number of channels</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> * @param nb_samples the number of samples in a single channel</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> * @param sample_fmt the sample format</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> * @param align buffer size alignment (0 = default, 1 = no alignment)</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> * @return >=0 on success or a negative error code on failure</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"> * @todo return minimum size in bytes required for the buffer in case</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> * of success at the next bump</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="keywordtype">int</span> <a class="code" href="group__lavu__sampmanip.html#ga673254a62fa75dab3211caf17c73c6eb">av_samples_fill_arrays</a>(uint8_t **audio_data, <span class="keywordtype">int</span> *linesize,</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">const</span> uint8_t *buf,</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordtype">int</span> nb_channels, <span class="keywordtype">int</span> nb_samples,</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt, <span class="keywordtype">int</span> align);</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="comment">/**</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"> * Allocate a samples buffer for nb_samples samples, and fill data pointers and</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment"> * linesize accordingly.</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment"> * The allocated samples buffer can be freed by using av_freep(&audio_data[0])</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="comment"> * Allocated data will be initialized to silence.</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"> * @see enum AVSampleFormat</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment"> * The documentation for AVSampleFormat describes the data layout.</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment"> * @param[out] audio_data array to be filled with the pointer for each channel</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment"> * @param[out] linesize aligned size for audio buffer(s), may be NULL</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment"> * @param nb_channels number of audio channels</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="comment"> * @param nb_samples number of samples per channel</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment"> * @param align buffer size alignment (0 = default, 1 = no alignment)</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment"> * @return >=0 on success or a negative error code on failure</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> * @todo return the size of the allocated buffer in case of success at the next bump</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment"> * @see av_samples_fill_arrays()</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment"> * @see av_samples_alloc_array_and_samples()</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__sampmanip.html#ga4db4c77f928d32c7d8854732f50b8c04">av_samples_alloc</a>(uint8_t **audio_data, <span class="keywordtype">int</span> *linesize, <span class="keywordtype">int</span> nb_channels,</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordtype">int</span> nb_samples, <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt, <span class="keywordtype">int</span> align);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="comment"></span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment"> * Allocate a data pointers array, samples buffer for nb_samples</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"> * samples, and fill data pointers and linesize accordingly.</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> * This is the same as av_samples_alloc(), but also allocates the data</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> * pointers array.</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment"> * @see av_samples_alloc()</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__sampmanip.html#gae8b9f22f2f659d023f111390d9545273">av_samples_alloc_array_and_samples</a>(uint8_t ***audio_data, <span class="keywordtype">int</span> *linesize, <span class="keywordtype">int</span> nb_channels,</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordtype">int</span> nb_samples, <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt, <span class="keywordtype">int</span> align);</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment"></span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment"> * Copy samples from src to dst.</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="comment"> * @param dst destination array of pointers to data planes</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment"> * @param src source array of pointers to data planes</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment"> * @param dst_offset offset in samples at which the data will be written to dst</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment"> * @param src_offset offset in samples at which the data will be read from src</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment"> * @param nb_samples number of samples to be copied</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"> * @param nb_channels number of audio channels</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="comment"> * @param sample_fmt audio sample format</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__sampmanip.html#ga5fdc6b1118f3ba7ad9ac9f67308b9597">av_samples_copy</a>(uint8_t **dst, uint8_t * <span class="keyword">const</span> *src, <span class="keywordtype">int</span> dst_offset,</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordtype">int</span> src_offset, <span class="keywordtype">int</span> nb_samples, <span class="keywordtype">int</span> nb_channels,</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="comment"></span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment"> * Fill an audio buffer with silence.</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment"> * @param audio_data array of pointers to data planes</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"> * @param offset offset in samples at which to start filling</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment"> * @param nb_samples number of samples to fill</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * @param nb_channels number of audio channels</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> * @param sample_fmt audio sample format</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keywordtype">int</span> <a class="code" href="group__lavu__sampmanip.html#ga6f287e5c4f426a8be8a8b5b8f708a05c">av_samples_set_silence</a>(uint8_t **audio_data, <span class="keywordtype">int</span> offset, <span class="keywordtype">int</span> nb_samples,</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordtype">int</span> nb_channels, <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt);</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment"></span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment"> * @}</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment"> * @}</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_SAMPLEFMT_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5a2d21c520e4ab21100b6440ec2d81ba1b"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a2d21c520e4ab21100b6440ec2d81ba1b">AV_SAMPLE_FMT_FLTP</a></div><div class="ttdoc">float, planar </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00070">samplefmt.h:70</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5a8c2ef4962274b33e2828fb9629c104fd"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a8c2ef4962274b33e2828fb9629c104fd">AV_SAMPLE_FMT_NB</a></div><div class="ttdoc">Number of sample formats. DO NOT USE if linking dynamically. </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00073">samplefmt.h:73</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_gabdc8c2172c33fe9d36cbedaf3c5f83bb"><div class="ttname"><a href="group__lavu__sampfmts.html#gabdc8c2172c33fe9d36cbedaf3c5f83bb">av_get_sample_fmt_string</a></div><div class="ttdeci">char * av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Generate a string corresponding to the sample format with sample_fmt, or a header if sample_fmt is ne...</div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5ac5d4bb5b0fb0dc7316fb3c7a73029912"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ac5d4bb5b0fb0dc7316fb3c7a73029912">AV_SAMPLE_FMT_NONE</a></div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00060">samplefmt.h:60</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5adf1348382a7c7473a425e05530989ae5"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf1348382a7c7473a425e05530989ae5">AV_SAMPLE_FMT_DBLP</a></div><div class="ttdoc">double, planar </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00071">samplefmt.h:71</a></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__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5a5251d62cc3c7f18e56bc8e0c48a27903"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a5251d62cc3c7f18e56bc8e0c48a27903">AV_SAMPLE_FMT_FLT</a></div><div class="ttdoc">float </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00064">samplefmt.h:64</a></div></div>
<div class="ttc" id="group__lavu__sampmanip_html_gae8b9f22f2f659d023f111390d9545273"><div class="ttname"><a href="group__lavu__sampmanip.html#gae8b9f22f2f659d023f111390d9545273">av_samples_alloc_array_and_samples</a></div><div class="ttdeci">int av_samples_alloc_array_and_samples(uint8_t ***audio_data, int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)</div><div class="ttdoc">Allocate a data pointers array, samples buffer for nb_samples samples, and fill data pointers and lin...</div></div>
<div class="ttc" id="attributes_8h_html"><div class="ttname"><a href="attributes_8h.html">attributes.h</a></div><div class="ttdoc">Macro definitions for various function/variable attributes. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga82caf838259d95cc6c4fd87633bb0e19"><div class="ttname"><a href="group__lavu__sampfmts.html#ga82caf838259d95cc6c4fd87633bb0e19">av_get_planar_sample_fmt</a></div><div class="ttdeci">enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Get the planar alternative form of the given sample format. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5ab7ae6bb6718c07cd316778783a57a63b"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ab7ae6bb6718c07cd316778783a57a63b">AV_SAMPLE_FMT_S32</a></div><div class="ttdoc">signed 32 bits </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00063">samplefmt.h:63</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga06ba8a64dc4382c422789a5d0b6bf592"><div class="ttname"><a href="group__lavu__sampfmts.html#ga06ba8a64dc4382c422789a5d0b6bf592">av_sample_fmt_is_planar</a></div><div class="ttdeci">int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Check if the sample format is planar. </div></div>
<div class="ttc" id="group__lavu__sampmanip_html_ga6f287e5c4f426a8be8a8b5b8f708a05c"><div class="ttname"><a href="group__lavu__sampmanip.html#ga6f287e5c4f426a8be8a8b5b8f708a05c">av_samples_set_silence</a></div><div class="ttdeci">int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Fill an audio buffer with silence. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga31b9d149b2de9821a65f4f5612970838"><div class="ttname"><a href="group__lavu__sampfmts.html#ga31b9d149b2de9821a65f4f5612970838">av_get_sample_fmt_name</a></div><div class="ttdeci">const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Return the name of sample_fmt, or NULL if sample_fmt is not recognized. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5adf0f66f21492f8fd5db6debb8b3f932a"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf0f66f21492f8fd5db6debb8b3f932a">AV_SAMPLE_FMT_U8</a></div><div class="ttdoc">unsigned 8 bits </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00061">samplefmt.h:61</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5aa215d25dfbf927aa362c837fed4b15a8"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aa215d25dfbf927aa362c837fed4b15a8">AV_SAMPLE_FMT_S32P</a></div><div class="ttdoc">signed 32 bits, planar </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00069">samplefmt.h:69</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5ae35a2a6a7593723d9fe4bcefb2876606"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ae35a2a6a7593723d9fe4bcefb2876606">AV_SAMPLE_FMT_DBL</a></div><div class="ttdoc">double </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00065">samplefmt.h:65</a></div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5a6ab0109a23af37e29ea3a7282c00d311"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a6ab0109a23af37e29ea3a7282c00d311">AV_SAMPLE_FMT_U8P</a></div><div class="ttdoc">unsigned 8 bits, planar </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00067">samplefmt.h:67</a></div></div>
<div class="ttc" id="group__lavu__sampmanip_html_ga4db4c77f928d32c7d8854732f50b8c04"><div class="ttname"><a href="group__lavu__sampmanip.html#ga4db4c77f928d32c7d8854732f50b8c04">av_samples_alloc</a></div><div class="ttdeci">int av_samples_alloc(uint8_t **audio_data, int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)</div><div class="ttdoc">Allocate a samples buffer for nb_samples samples, and fill data pointers and linesize accordingly...</div></div>
<div class="ttc" id="group__lavu__sampfmts_html_gaf9a51ca15301871723577c730b5865c5"><div class="ttname"><a href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a></div><div class="ttdeci">AVSampleFormat</div><div class="ttdoc">Audio sample formats. </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00059">samplefmt.h:59</a></div></div>
<div class="ttc" id="group__lavu__sampmanip_html_ga5fdc6b1118f3ba7ad9ac9f67308b9597"><div class="ttname"><a href="group__lavu__sampmanip.html#ga5fdc6b1118f3ba7ad9ac9f67308b9597">av_samples_copy</a></div><div class="ttdeci">int av_samples_copy(uint8_t **dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Copy samples from src to dst. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_gaa7368bc4e3a366b688e81938ed55eb06"><div class="ttname"><a href="group__lavu__sampfmts.html#gaa7368bc4e3a366b688e81938ed55eb06">av_samples_get_buffer_size</a></div><div class="ttdeci">int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)</div><div class="ttdoc">Get the required buffer size for the given audio parameters. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga655c989b749667468e5e839e26fe63db"><div class="ttname"><a href="group__lavu__sampfmts.html#ga655c989b749667468e5e839e26fe63db">av_get_sample_fmt</a></div><div class="ttdeci">enum AVSampleFormat av_get_sample_fmt(const char *name)</div><div class="ttdoc">Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE on error. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga0c3c218e1dd570ad4917c69a35a6c77d"><div class="ttname"><a href="group__lavu__sampfmts.html#ga0c3c218e1dd570ad4917c69a35a6c77d">av_get_bytes_per_sample</a></div><div class="ttdeci">int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Return number of bytes per sample. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga8e66c3f813ea02afcaa56a8a964c749a"><div class="ttname"><a href="group__lavu__sampfmts.html#ga8e66c3f813ea02afcaa56a8a964c749a">av_get_alt_sample_fmt</a></div><div class="ttdeci">enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar)</div><div class="ttdoc">Return the planar<->packed alternative form of the given sample format, or AV_SAMPLE_FMT_NONE on erro...</div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ga7817ec0eff4dc6fc0962f31e6d138bca"><div class="ttname"><a href="group__lavu__sampfmts.html#ga7817ec0eff4dc6fc0962f31e6d138bca">av_get_packed_sample_fmt</a></div><div class="ttdeci">enum AVSampleFormat av_get_packed_sample_fmt(enum AVSampleFormat sample_fmt)</div><div class="ttdoc">Get the packed alternative form of the given sample format. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5aea6132df57aebc3f76e10665395c46af"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aea6132df57aebc3f76e10665395c46af">AV_SAMPLE_FMT_S16</a></div><div class="ttdoc">signed 16 bits </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00062">samplefmt.h:62</a></div></div>
<div class="ttc" id="group__lavu__sampmanip_html_ga673254a62fa75dab3211caf17c73c6eb"><div class="ttname"><a href="group__lavu__sampmanip.html#ga673254a62fa75dab3211caf17c73c6eb">av_samples_fill_arrays</a></div><div class="ttdeci">int av_samples_fill_arrays(uint8_t **audio_data, int *linesize, const uint8_t *buf, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)</div><div class="ttdoc">Fill plane data pointers and linesize for samples with sample format sample_fmt. </div></div>
<div class="ttc" id="group__lavu__sampfmts_html_ggaf9a51ca15301871723577c730b5865c5a35eaaad9da207aa4e63fa02fd67fae68"><div class="ttname"><a href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a35eaaad9da207aa4e63fa02fd67fae68">AV_SAMPLE_FMT_S16P</a></div><div class="ttdoc">signed 16 bits, planar </div><div class="ttdef"><b>Definition:</b> <a href="samplefmt_8h_source.html#l00068">samplefmt.h:68</a></div></div>
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