group__DCT4__IDCT4__Table.html 39 KB

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  111. <div class="title">DCT Type IV Tables<div class="ingroups"><a class="el" href="group__DCT4__IDCT4.html">DCT Type IV Functions</a></div></div> </div>
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  113. <div class="contents">
  114. <table class="memberdecls">
  115. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
  116. Variables</h2></td></tr>
  117. <tr class="memitem:gad00f29d896d64d6da7afbbb9d3e182a4"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gad00f29d896d64d6da7afbbb9d3e182a4">Weights_128</a> [256]</td></tr>
  118. <tr class="separator:gad00f29d896d64d6da7afbbb9d3e182a4"><td class="memSeparator" colspan="2">&#160;</td></tr>
  119. <tr class="memitem:gaeb67b0be5b3c2139d660e02cedeed908"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gaeb67b0be5b3c2139d660e02cedeed908">Weights_512</a> [1024]</td></tr>
  120. <tr class="separator:gaeb67b0be5b3c2139d660e02cedeed908"><td class="memSeparator" colspan="2">&#160;</td></tr>
  121. <tr class="memitem:gac3a2a00b3106dfcb5e0a582f50c65692"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gac3a2a00b3106dfcb5e0a582f50c65692">Weights_2048</a> [4096]</td></tr>
  122. <tr class="separator:gac3a2a00b3106dfcb5e0a582f50c65692"><td class="memSeparator" colspan="2">&#160;</td></tr>
  123. <tr class="memitem:ga45a8ec91e5da91790566105bc7e6f0c2"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga45a8ec91e5da91790566105bc7e6f0c2">Weights_8192</a> [16384]</td></tr>
  124. <tr class="separator:ga45a8ec91e5da91790566105bc7e6f0c2"><td class="memSeparator" colspan="2">&#160;</td></tr>
  125. <tr class="memitem:ga16248ed86161ef97538011b49f13e8b7"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga16248ed86161ef97538011b49f13e8b7">cos_factors_128</a> [128]</td></tr>
  126. <tr class="separator:ga16248ed86161ef97538011b49f13e8b7"><td class="memSeparator" colspan="2">&#160;</td></tr>
  127. <tr class="memitem:ga49fd288352ca5bb43f5cec52273b0d80"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga49fd288352ca5bb43f5cec52273b0d80">cos_factors_512</a> [512]</td></tr>
  128. <tr class="separator:ga49fd288352ca5bb43f5cec52273b0d80"><td class="memSeparator" colspan="2">&#160;</td></tr>
  129. <tr class="memitem:ga1ba5306e0bc44730b40ab34cced45fd6"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga1ba5306e0bc44730b40ab34cced45fd6">cos_factors_2048</a> [2048]</td></tr>
  130. <tr class="separator:ga1ba5306e0bc44730b40ab34cced45fd6"><td class="memSeparator" colspan="2">&#160;</td></tr>
  131. <tr class="memitem:gac12484542bc6aaecc754c855457411de"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gac12484542bc6aaecc754c855457411de">cos_factors_8192</a> [8192]</td></tr>
  132. <tr class="separator:gac12484542bc6aaecc754c855457411de"><td class="memSeparator" colspan="2">&#160;</td></tr>
  133. <tr class="memitem:gaa4ff5e6f062efb1d1ec8c6c2207c3727"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gaa4ff5e6f062efb1d1ec8c6c2207c3727">WeightsQ15_128</a> [256]</td></tr>
  134. <tr class="separator:gaa4ff5e6f062efb1d1ec8c6c2207c3727"><td class="memSeparator" colspan="2">&#160;</td></tr>
  135. <tr class="memitem:gadc8ee250fc217d6cb5c84dd7c1eb6d31"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gadc8ee250fc217d6cb5c84dd7c1eb6d31">WeightsQ15_512</a> [1024]</td></tr>
  136. <tr class="separator:gadc8ee250fc217d6cb5c84dd7c1eb6d31"><td class="memSeparator" colspan="2">&#160;</td></tr>
  137. <tr class="memitem:ga2235ec700d0d6925d9733f48541d46f5"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga2235ec700d0d6925d9733f48541d46f5">WeightsQ15_2048</a> [4096]</td></tr>
  138. <tr class="separator:ga2235ec700d0d6925d9733f48541d46f5"><td class="memSeparator" colspan="2">&#160;</td></tr>
  139. <tr class="memitem:ga4fdc60621eb306984a82ce8b2d645bb7"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga4fdc60621eb306984a82ce8b2d645bb7">WeightsQ15_8192</a> [16384]</td></tr>
  140. <tr class="separator:ga4fdc60621eb306984a82ce8b2d645bb7"><td class="memSeparator" colspan="2">&#160;</td></tr>
  141. <tr class="memitem:ga1477edd21c7b08b0b59a564f6c24d6c5"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga1477edd21c7b08b0b59a564f6c24d6c5">cos_factorsQ15_128</a> [128]</td></tr>
  142. <tr class="separator:ga1477edd21c7b08b0b59a564f6c24d6c5"><td class="memSeparator" colspan="2">&#160;</td></tr>
  143. <tr class="memitem:gac056c3d026058eab3ba650828ff5642f"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gac056c3d026058eab3ba650828ff5642f">cos_factorsQ15_512</a> [512]</td></tr>
  144. <tr class="separator:gac056c3d026058eab3ba650828ff5642f"><td class="memSeparator" colspan="2">&#160;</td></tr>
  145. <tr class="memitem:gaeee5df7c1be2374441868ecbbc6c7e5d"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gaeee5df7c1be2374441868ecbbc6c7e5d">cos_factorsQ15_2048</a> [2048]</td></tr>
  146. <tr class="separator:gaeee5df7c1be2374441868ecbbc6c7e5d"><td class="memSeparator" colspan="2">&#160;</td></tr>
  147. <tr class="memitem:ga988ff0563cc9df7848c9348871ac6c07"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga988ff0563cc9df7848c9348871ac6c07">cos_factorsQ15_8192</a> [8192]</td></tr>
  148. <tr class="separator:ga988ff0563cc9df7848c9348871ac6c07"><td class="memSeparator" colspan="2">&#160;</td></tr>
  149. <tr class="memitem:ga02d7024538a87214296b01d83ba36b02"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga02d7024538a87214296b01d83ba36b02">WeightsQ31_128</a> [256]</td></tr>
  150. <tr class="separator:ga02d7024538a87214296b01d83ba36b02"><td class="memSeparator" colspan="2">&#160;</td></tr>
  151. <tr class="memitem:ga31a8217a96f7d3171921e98398f31596"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga31a8217a96f7d3171921e98398f31596">WeightsQ31_512</a> [1024]</td></tr>
  152. <tr class="separator:ga31a8217a96f7d3171921e98398f31596"><td class="memSeparator" colspan="2">&#160;</td></tr>
  153. <tr class="memitem:ga725b65c25a02b3cad329e18bb832f65e"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga725b65c25a02b3cad329e18bb832f65e">WeightsQ31_2048</a> [4096]</td></tr>
  154. <tr class="separator:ga725b65c25a02b3cad329e18bb832f65e"><td class="memSeparator" colspan="2">&#160;</td></tr>
  155. <tr class="memitem:ga16bf6bbe5c4c9b35f88253cf7bdcc435"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga16bf6bbe5c4c9b35f88253cf7bdcc435">WeightsQ31_8192</a> [16384]</td></tr>
  156. <tr class="separator:ga16bf6bbe5c4c9b35f88253cf7bdcc435"><td class="memSeparator" colspan="2">&#160;</td></tr>
  157. <tr class="memitem:gabb8ee2004a3520fd08388db637d43875"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gabb8ee2004a3520fd08388db637d43875">cos_factorsQ31_128</a> [128]</td></tr>
  158. <tr class="separator:gabb8ee2004a3520fd08388db637d43875"><td class="memSeparator" colspan="2">&#160;</td></tr>
  159. <tr class="memitem:ga3559569e603cb918911074be88523d0e"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#ga3559569e603cb918911074be88523d0e">cos_factorsQ31_512</a> [512]</td></tr>
  160. <tr class="separator:ga3559569e603cb918911074be88523d0e"><td class="memSeparator" colspan="2">&#160;</td></tr>
  161. <tr class="memitem:gaa15fc3fb058482defda371113cd12e74"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gaa15fc3fb058482defda371113cd12e74">cos_factorsQ31_2048</a> [2048]</td></tr>
  162. <tr class="separator:gaa15fc3fb058482defda371113cd12e74"><td class="memSeparator" colspan="2">&#160;</td></tr>
  163. <tr class="memitem:gaf687c4bbdbc700a3ad5d807d28de63e4"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__DCT4__IDCT4__Table.html#gaf687c4bbdbc700a3ad5d807d28de63e4">cos_factorsQ31_8192</a> [8192]</td></tr>
  164. <tr class="separator:gaf687c4bbdbc700a3ad5d807d28de63e4"><td class="memSeparator" colspan="2">&#160;</td></tr>
  165. </table>
  166. <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
  167. <h2 class="groupheader">Variable Documentation</h2>
  168. <a class="anchor" id="ga16248ed86161ef97538011b49f13e8b7"></a>
  169. <div class="memitem">
  170. <div class="memproto">
  171. <table class="mlabels">
  172. <tr>
  173. <td class="mlabels-left">
  174. <table class="memname">
  175. <tr>
  176. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> cos_factors_128[128]</td>
  177. </tr>
  178. </table>
  179. </td>
  180. <td class="mlabels-right">
  181. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  182. </tr>
  183. </table>
  184. </div><div class="memdoc">
  185. <dl class="section user"><dt></dt><dd>cosFactor tables are generated using the formula : <pre>cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))</pre> </dd></dl>
  186. <dl class="section user"><dt></dt><dd>C command to generate the table </dd></dl>
  187. <dl class="section user"><dt></dt><dd><pre> for(i = 0; i&lt; N; i++)
  188. {
  189. cos_factors[i]= 2 * cos((2*i+1)*c/2);
  190. } </pre> </dd></dl>
  191. <dl class="section user"><dt></dt><dd>where <code>N</code> is the number of factors to generate and <code>c</code> is <code>pi/(2*N)</code> </dd></dl>
  192. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  193. </div>
  194. </div>
  195. <a class="anchor" id="ga1ba5306e0bc44730b40ab34cced45fd6"></a>
  196. <div class="memitem">
  197. <div class="memproto">
  198. <table class="mlabels">
  199. <tr>
  200. <td class="mlabels-left">
  201. <table class="memname">
  202. <tr>
  203. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> cos_factors_2048[2048]</td>
  204. </tr>
  205. </table>
  206. </td>
  207. <td class="mlabels-right">
  208. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  209. </tr>
  210. </table>
  211. </div><div class="memdoc">
  212. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  213. </div>
  214. </div>
  215. <a class="anchor" id="ga49fd288352ca5bb43f5cec52273b0d80"></a>
  216. <div class="memitem">
  217. <div class="memproto">
  218. <table class="mlabels">
  219. <tr>
  220. <td class="mlabels-left">
  221. <table class="memname">
  222. <tr>
  223. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> cos_factors_512[512]</td>
  224. </tr>
  225. </table>
  226. </td>
  227. <td class="mlabels-right">
  228. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  229. </tr>
  230. </table>
  231. </div><div class="memdoc">
  232. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  233. </div>
  234. </div>
  235. <a class="anchor" id="gac12484542bc6aaecc754c855457411de"></a>
  236. <div class="memitem">
  237. <div class="memproto">
  238. <table class="mlabels">
  239. <tr>
  240. <td class="mlabels-left">
  241. <table class="memname">
  242. <tr>
  243. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> cos_factors_8192[8192]</td>
  244. </tr>
  245. </table>
  246. </td>
  247. <td class="mlabels-right">
  248. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  249. </tr>
  250. </table>
  251. </div><div class="memdoc">
  252. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  253. </div>
  254. </div>
  255. <a class="anchor" id="ga1477edd21c7b08b0b59a564f6c24d6c5"></a>
  256. <div class="memitem">
  257. <div class="memproto">
  258. <table class="mlabels">
  259. <tr>
  260. <td class="mlabels-left">
  261. <table class="memname">
  262. <tr>
  263. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> cos_factorsQ15_128[128]</td>
  264. </tr>
  265. </table>
  266. </td>
  267. <td class="mlabels-right">
  268. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  269. </tr>
  270. </table>
  271. </div><div class="memdoc">
  272. <dl class="section user"><dt></dt><dd>cosFactor tables are generated using the formula : <pre> cos_factors[n] = 2 * cos((2n+1)*pi/(4*N)) </pre> </dd></dl>
  273. <dl class="section user"><dt></dt><dd>C command to generate the table <pre>
  274. for(i = 0; i&lt; N; i++)
  275. {
  276. cos_factors[i]= 2 * cos((2*i+1)*c/2);
  277. } </pre> </dd></dl>
  278. <dl class="section user"><dt></dt><dd>where <code>N</code> is the number of factors to generate and <code>c</code> is <code>pi/(2*N)</code> </dd></dl>
  279. <dl class="section user"><dt></dt><dd>Then converted to q15 format by multiplying with 2^31 and saturated if required. </dd></dl>
  280. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  281. </div>
  282. </div>
  283. <a class="anchor" id="gaeee5df7c1be2374441868ecbbc6c7e5d"></a>
  284. <div class="memitem">
  285. <div class="memproto">
  286. <table class="mlabels">
  287. <tr>
  288. <td class="mlabels-left">
  289. <table class="memname">
  290. <tr>
  291. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> cos_factorsQ15_2048[2048]</td>
  292. </tr>
  293. </table>
  294. </td>
  295. <td class="mlabels-right">
  296. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  297. </tr>
  298. </table>
  299. </div><div class="memdoc">
  300. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  301. </div>
  302. </div>
  303. <a class="anchor" id="gac056c3d026058eab3ba650828ff5642f"></a>
  304. <div class="memitem">
  305. <div class="memproto">
  306. <table class="mlabels">
  307. <tr>
  308. <td class="mlabels-left">
  309. <table class="memname">
  310. <tr>
  311. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> cos_factorsQ15_512[512]</td>
  312. </tr>
  313. </table>
  314. </td>
  315. <td class="mlabels-right">
  316. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  317. </tr>
  318. </table>
  319. </div><div class="memdoc">
  320. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  321. </div>
  322. </div>
  323. <a class="anchor" id="ga988ff0563cc9df7848c9348871ac6c07"></a>
  324. <div class="memitem">
  325. <div class="memproto">
  326. <table class="mlabels">
  327. <tr>
  328. <td class="mlabels-left">
  329. <table class="memname">
  330. <tr>
  331. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> cos_factorsQ15_8192[8192]</td>
  332. </tr>
  333. </table>
  334. </td>
  335. <td class="mlabels-right">
  336. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  337. </tr>
  338. </table>
  339. </div><div class="memdoc">
  340. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  341. </div>
  342. </div>
  343. <a class="anchor" id="gabb8ee2004a3520fd08388db637d43875"></a>
  344. <div class="memitem">
  345. <div class="memproto">
  346. <table class="mlabels">
  347. <tr>
  348. <td class="mlabels-left">
  349. <table class="memname">
  350. <tr>
  351. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> cos_factorsQ31_128[128]</td>
  352. </tr>
  353. </table>
  354. </td>
  355. <td class="mlabels-right">
  356. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  357. </tr>
  358. </table>
  359. </div><div class="memdoc">
  360. <dl class="section user"><dt></dt><dd>cosFactor tables are generated using the formula : <pre>cos_factors[n] = 2 * cos((2n+1)*pi/(4*N))</pre> </dd></dl>
  361. <dl class="section user"><dt></dt><dd>C command to generate the table <pre>
  362. for(i = 0; i&lt; N; i++)
  363. {
  364. cos_factors[i]= 2 * cos((2*i+1)*c/2);
  365. } </pre> </dd></dl>
  366. <dl class="section user"><dt></dt><dd>where <code>N</code> is the number of factors to generate and <code>c</code> is <code>pi/(2*N)</code> </dd></dl>
  367. <dl class="section user"><dt></dt><dd>Then converted to q31 format by multiplying with 2^31 and saturated if required. </dd></dl>
  368. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  369. </div>
  370. </div>
  371. <a class="anchor" id="gaa15fc3fb058482defda371113cd12e74"></a>
  372. <div class="memitem">
  373. <div class="memproto">
  374. <table class="mlabels">
  375. <tr>
  376. <td class="mlabels-left">
  377. <table class="memname">
  378. <tr>
  379. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> cos_factorsQ31_2048[2048]</td>
  380. </tr>
  381. </table>
  382. </td>
  383. <td class="mlabels-right">
  384. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  385. </tr>
  386. </table>
  387. </div><div class="memdoc">
  388. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  389. </div>
  390. </div>
  391. <a class="anchor" id="ga3559569e603cb918911074be88523d0e"></a>
  392. <div class="memitem">
  393. <div class="memproto">
  394. <table class="mlabels">
  395. <tr>
  396. <td class="mlabels-left">
  397. <table class="memname">
  398. <tr>
  399. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> cos_factorsQ31_512[512]</td>
  400. </tr>
  401. </table>
  402. </td>
  403. <td class="mlabels-right">
  404. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  405. </tr>
  406. </table>
  407. </div><div class="memdoc">
  408. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  409. </div>
  410. </div>
  411. <a class="anchor" id="gaf687c4bbdbc700a3ad5d807d28de63e4"></a>
  412. <div class="memitem">
  413. <div class="memproto">
  414. <table class="mlabels">
  415. <tr>
  416. <td class="mlabels-left">
  417. <table class="memname">
  418. <tr>
  419. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> cos_factorsQ31_8192[8192]</td>
  420. </tr>
  421. </table>
  422. </td>
  423. <td class="mlabels-right">
  424. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  425. </tr>
  426. </table>
  427. </div><div class="memdoc">
  428. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  429. </div>
  430. </div>
  431. <a class="anchor" id="gad00f29d896d64d6da7afbbb9d3e182a4"></a>
  432. <div class="memitem">
  433. <div class="memproto">
  434. <table class="mlabels">
  435. <tr>
  436. <td class="mlabels-left">
  437. <table class="memname">
  438. <tr>
  439. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> Weights_128[256]</td>
  440. </tr>
  441. </table>
  442. </td>
  443. <td class="mlabels-right">
  444. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  445. </tr>
  446. </table>
  447. </div><div class="memdoc">
  448. <dl class="section user"><dt></dt><dd>Weights tables are generated using the formula : <pre>weights[n] = e^(-j*n*pi/(2*N))</pre> </dd></dl>
  449. <dl class="section user"><dt></dt><dd>C command to generate the table <pre>
  450. for(i = 0; i&lt; N; i++)
  451. {
  452. weights[2*i]= cos(i*c);
  453. weights[(2*i)+1]= -sin(i * c);
  454. } </pre> </dd></dl>
  455. <dl class="section user"><dt></dt><dd>Where <code>N</code> is the Number of weights to be calculated and <code>c</code> is <code>pi/(2*N)</code> </dd></dl>
  456. <dl class="section user"><dt></dt><dd>In the tables below the real and imaginary values are placed alternatively, hence the array length is <code>2*N</code>. </dd></dl>
  457. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  458. </div>
  459. </div>
  460. <a class="anchor" id="gac3a2a00b3106dfcb5e0a582f50c65692"></a>
  461. <div class="memitem">
  462. <div class="memproto">
  463. <table class="mlabels">
  464. <tr>
  465. <td class="mlabels-left">
  466. <table class="memname">
  467. <tr>
  468. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> Weights_2048[4096]</td>
  469. </tr>
  470. </table>
  471. </td>
  472. <td class="mlabels-right">
  473. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  474. </tr>
  475. </table>
  476. </div><div class="memdoc">
  477. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  478. </div>
  479. </div>
  480. <a class="anchor" id="gaeb67b0be5b3c2139d660e02cedeed908"></a>
  481. <div class="memitem">
  482. <div class="memproto">
  483. <table class="mlabels">
  484. <tr>
  485. <td class="mlabels-left">
  486. <table class="memname">
  487. <tr>
  488. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> Weights_512[1024]</td>
  489. </tr>
  490. </table>
  491. </td>
  492. <td class="mlabels-right">
  493. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  494. </tr>
  495. </table>
  496. </div><div class="memdoc">
  497. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  498. </div>
  499. </div>
  500. <a class="anchor" id="ga45a8ec91e5da91790566105bc7e6f0c2"></a>
  501. <div class="memitem">
  502. <div class="memproto">
  503. <table class="mlabels">
  504. <tr>
  505. <td class="mlabels-left">
  506. <table class="memname">
  507. <tr>
  508. <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> Weights_8192[16384]</td>
  509. </tr>
  510. </table>
  511. </td>
  512. <td class="mlabels-right">
  513. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  514. </tr>
  515. </table>
  516. </div><div class="memdoc">
  517. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gab094ad3bc6fa1b84e8b12a24e1850a06">arm_dct4_init_f32()</a>.</p>
  518. </div>
  519. </div>
  520. <a class="anchor" id="gaa4ff5e6f062efb1d1ec8c6c2207c3727"></a>
  521. <div class="memitem">
  522. <div class="memproto">
  523. <table class="mlabels">
  524. <tr>
  525. <td class="mlabels-left">
  526. <table class="memname">
  527. <tr>
  528. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> WeightsQ15_128[256]</td>
  529. </tr>
  530. </table>
  531. </td>
  532. <td class="mlabels-right">
  533. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  534. </tr>
  535. </table>
  536. </div><div class="memdoc">
  537. <dl class="section user"><dt></dt><dd>Weights tables are generated using the formula : <pre>weights[n] = e^(-j*n*pi/(2*N))</pre> </dd></dl>
  538. <dl class="section user"><dt></dt><dd>C command to generate the table <pre>
  539. for(i = 0; i&lt; N; i++)
  540. {
  541. weights[2*i]= cos(i*c);
  542. weights[(2*i)+1]= -sin(i * c);
  543. } </pre> </dd></dl>
  544. <dl class="section user"><dt></dt><dd>where <code>N</code> is the Number of weights to be calculated and <code>c</code> is <code>pi/(2*N)</code> </dd></dl>
  545. <dl class="section user"><dt></dt><dd>Converted the output to q15 format by multiplying with 2^31 and saturated if required. </dd></dl>
  546. <dl class="section user"><dt></dt><dd>In the tables below the real and imaginary values are placed alternatively, hence the array length is <code>2*N</code>. </dd></dl>
  547. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  548. </div>
  549. </div>
  550. <a class="anchor" id="ga2235ec700d0d6925d9733f48541d46f5"></a>
  551. <div class="memitem">
  552. <div class="memproto">
  553. <table class="mlabels">
  554. <tr>
  555. <td class="mlabels-left">
  556. <table class="memname">
  557. <tr>
  558. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> WeightsQ15_2048[4096]</td>
  559. </tr>
  560. </table>
  561. </td>
  562. <td class="mlabels-right">
  563. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  564. </tr>
  565. </table>
  566. </div><div class="memdoc">
  567. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  568. </div>
  569. </div>
  570. <a class="anchor" id="gadc8ee250fc217d6cb5c84dd7c1eb6d31"></a>
  571. <div class="memitem">
  572. <div class="memproto">
  573. <table class="mlabels">
  574. <tr>
  575. <td class="mlabels-left">
  576. <table class="memname">
  577. <tr>
  578. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> WeightsQ15_512[1024]</td>
  579. </tr>
  580. </table>
  581. </td>
  582. <td class="mlabels-right">
  583. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  584. </tr>
  585. </table>
  586. </div><div class="memdoc">
  587. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  588. </div>
  589. </div>
  590. <a class="anchor" id="ga4fdc60621eb306984a82ce8b2d645bb7"></a>
  591. <div class="memitem">
  592. <div class="memproto">
  593. <table class="mlabels">
  594. <tr>
  595. <td class="mlabels-left">
  596. <table class="memname">
  597. <tr>
  598. <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> WeightsQ15_8192[16384]</td>
  599. </tr>
  600. </table>
  601. </td>
  602. <td class="mlabels-right">
  603. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  604. </tr>
  605. </table>
  606. </div><div class="memdoc">
  607. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga966fd1b66a80873964533703ab5dc054">arm_dct4_init_q15()</a>.</p>
  608. </div>
  609. </div>
  610. <a class="anchor" id="ga02d7024538a87214296b01d83ba36b02"></a>
  611. <div class="memitem">
  612. <div class="memproto">
  613. <table class="mlabels">
  614. <tr>
  615. <td class="mlabels-left">
  616. <table class="memname">
  617. <tr>
  618. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> WeightsQ31_128[256]</td>
  619. </tr>
  620. </table>
  621. </td>
  622. <td class="mlabels-right">
  623. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  624. </tr>
  625. </table>
  626. </div><div class="memdoc">
  627. <dl class="section user"><dt></dt><dd>Weights tables are generated using the formula : <pre>weights[n] = e^(-j*n*pi/(2*N))</pre> </dd></dl>
  628. <dl class="section user"><dt></dt><dd>C command to generate the table <pre>
  629. for(i = 0; i&lt; N; i++)
  630. {
  631. weights[2*i]= cos(i*c);
  632. weights[(2*i)+1]= -sin(i * c);
  633. } </pre> </dd></dl>
  634. <dl class="section user"><dt></dt><dd>where <code>N</code> is the Number of weights to be calculated and <code>c</code> is <code>pi/(2*N)</code> </dd></dl>
  635. <dl class="section user"><dt></dt><dd>Convert the output to q31 format by multiplying with 2^31 and saturated if required. </dd></dl>
  636. <dl class="section user"><dt></dt><dd>In the tables below the real and imaginary values are placed alternatively, hence the array length is <code>2*N</code>. </dd></dl>
  637. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  638. </div>
  639. </div>
  640. <a class="anchor" id="ga725b65c25a02b3cad329e18bb832f65e"></a>
  641. <div class="memitem">
  642. <div class="memproto">
  643. <table class="mlabels">
  644. <tr>
  645. <td class="mlabels-left">
  646. <table class="memname">
  647. <tr>
  648. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> WeightsQ31_2048[4096]</td>
  649. </tr>
  650. </table>
  651. </td>
  652. <td class="mlabels-right">
  653. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  654. </tr>
  655. </table>
  656. </div><div class="memdoc">
  657. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  658. </div>
  659. </div>
  660. <a class="anchor" id="ga31a8217a96f7d3171921e98398f31596"></a>
  661. <div class="memitem">
  662. <div class="memproto">
  663. <table class="mlabels">
  664. <tr>
  665. <td class="mlabels-left">
  666. <table class="memname">
  667. <tr>
  668. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> WeightsQ31_512[1024]</td>
  669. </tr>
  670. </table>
  671. </td>
  672. <td class="mlabels-right">
  673. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  674. </tr>
  675. </table>
  676. </div><div class="memdoc">
  677. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  678. </div>
  679. </div>
  680. <a class="anchor" id="ga16bf6bbe5c4c9b35f88253cf7bdcc435"></a>
  681. <div class="memitem">
  682. <div class="memproto">
  683. <table class="mlabels">
  684. <tr>
  685. <td class="mlabels-left">
  686. <table class="memname">
  687. <tr>
  688. <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> WeightsQ31_8192[16384]</td>
  689. </tr>
  690. </table>
  691. </td>
  692. <td class="mlabels-right">
  693. <span class="mlabels"><span class="mlabel">static</span></span> </td>
  694. </tr>
  695. </table>
  696. </div><div class="memdoc">
  697. <p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga631bb59c7c97c814ff7147ecba6a716a">arm_dct4_init_q31()</a>.</p>
  698. </div>
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