player_8c-source.html

MP3 Player Source Code

00364       <a class="code" href="player_8c.html#a6">uiMode</a> = <a class="code" href="ui_8h.html#a24a2">UI_TITLE</a>;
00365     <span class="keywordflow">else</span>{
00366     }
00367   }<span class="keywordflow">else</span>{
00368     uiReturnDelay--;
00369   }
00370   
00371 <span class="preprocessor">#ifndef VS1003</span>
00372 <span class="preprocessor"></span>  <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a6">uiMode</a>==<a class="code" href="ui_8h.html#a24a3">UI_SPEC</a>) <span class="comment">//Only VS1003 has spectrum analyzer</span>
00373     <a class="code" href="player_8c.html#a6">uiMode</a>++;
00374   <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a6">uiMode</a>==<a class="code" href="ui_8h.html#a24a8">UI_RECLEVEL</a>) <span class="comment">//Only record in VS1003 chips</span>
00375     <a class="code" href="player_8c.html#a6">uiMode</a>++;
00376 <span class="preprocessor">#endif</span>
00377 <span class="preprocessor"></span>
00378   <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a6">uiMode</a>==<a class="code" href="ui_8h.html#a24a9">UI_INFO</a>)
00379     <a class="code" href="player_8c.html#a6">uiMode</a>++; <span class="comment">//Nothing interesting currently in screen UI_INFO.</span>
00380   <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a6">uiMode</a>==<a class="code" href="ui_8h.html#a24a10">UI_STOP</a>)
00381     <a class="code" href="player_8c.html#a6">uiMode</a>++; <span class="comment">//Nothing interesting currently in screen UI_STOP.</span>
00382 
00383   <span class="comment">/* Screen updates */</span>
00384   <span class="keywordflow">switch</span>(<a class="code" href="player_8c.html#a6">uiMode</a>){
00385     
00386   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a2">UI_TITLE</a>:  <span class="comment">//Playing time, song title</span>
00387 
00388     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a1">DS_TEXT</a>;
00389     <a class="code" href="player_8c.html#a11">ScreenSetPlayTime</a>();
00390     
00391     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a23">PS_RECORDING</a>){      
00392       <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a3">DS_PERCENTAGE</a>;
00393     }     
00394     
00395     <span class="keywordflow">break</span>;
00396     
00397   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a10">UI_STOP</a>: <span class="comment">//Ask if the user wants to stop</span>
00398     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a4">DS_NO_YES</a>;
00399     strcpy (<a class="code" href="display_8c.html#a1">displayTitle</a>, <span class="stringliteral">"Stop?   "</span>);
00400     <span class="keywordflow">break</span>;
00401 
00402   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a7">UI_CUE</a>: <span class="comment">//Ask if the user wants to fast forward or rewind</span>
00403     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a6">DS_RAWTEXT</a>;
00404     strcpy (<a class="code" href="display_8c.html#a1">displayTitle</a>, <span class="stringliteral">"REW/CUE  &lt;-   -&gt;"</span>);
00405 
00406     <span class="comment">//i = Mp3ReadRegister(SPI_HDAT1);</span>
00407     <span class="comment">//displayTitle[5] = lcd_hexchars[i&gt;&gt;12];</span>
00408     <span class="comment">//displayTitle[6] = lcd_hexchars[(i&gt;&gt;8)&amp;0x0f];</span>
00409     <span class="comment">//displayTitle[7] = lcd_hexchars[(i&gt;&gt;4)&amp;0x0f];</span>
00410     <span class="comment">//displayTitle[8] = lcd_hexchars[i&amp;0x0f];</span>
00411 
00412     <span class="keywordflow">break</span>;
00413     
00414   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a4">UI_VOLUME</a>: <span class="comment">//Show volume bar</span>
00415     <a class="code" href="lcd_8h.html#a5">LcdSelectFont</a>(<a class="code" href="lcdfonts_8c.html#a0">lcdFont_barchars</a>);
00416     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a3">DS_PERCENTAGE</a>;
00417     strcpy(<a class="code" href="display_8c.html#a1">displayTitle</a>,<span class="stringliteral">"Volume: "</span>);
00418     <a class="code" href="display_8c.html#a5">displayValue</a> = (100-(volume&gt;&gt;1));
00419     <span class="keywordflow">if</span> (<a class="code" href="display_8c.html#a5">displayValue</a>&lt;0) <a class="code" href="display_8c.html#a5">displayValue</a> = 0;
00420     <span class="keywordflow">break</span>;
00421 
00422   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a5">UI_BASS</a>: <span class="comment">//Show bass bar</span>
00423     <a class="code" href="lcd_8h.html#a5">LcdSelectFont</a>(<a class="code" href="lcdfonts_8c.html#a0">lcdFont_barchars</a>);
00424     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a3">DS_PERCENTAGE</a>;
00425     strcpy(<a class="code" href="display_8c.html#a1">displayTitle</a>,<span class="stringliteral">"Bass:   "</span>);
00426     <a class="code" href="display_8c.html#a5">displayValue</a> = (bass/5)*4;
00427     <span class="keywordflow">if</span> (<a class="code" href="display_8c.html#a5">displayValue</a>&lt;1) <a class="code" href="display_8c.html#a5">displayValue</a> = 1;
00428     <span class="keywordflow">break</span>;
00429 
00430   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a6">UI_TREBLE</a>: <span class="comment">//Show treble bar</span>
00431     <a class="code" href="lcd_8h.html#a5">LcdSelectFont</a>(<a class="code" href="lcdfonts_8c.html#a0">lcdFont_barchars</a>);
00432     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a3">DS_PERCENTAGE</a>;
00433     strcpy(<a class="code" href="display_8c.html#a1">displayTitle</a>,<span class="stringliteral">"Treble: "</span>);
00434     <a class="code" href="display_8c.html#a5">displayValue</a> = (treble/5)*4;
00435     <span class="keywordflow">if</span> (<a class="code" href="display_8c.html#a5">displayValue</a>&lt;1) <a class="code" href="display_8c.html#a5">displayValue</a> = 1;
00436     <span class="keywordflow">break</span>;
00437 
00438   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a8">UI_RECLEVEL</a>: <span class="comment">//Show recording level</span>
00439 
00440     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a23">PS_RECORDING</a>){
00441       <a class="code" href="lcd_8h.html#a5">LcdSelectFont</a>(<a class="code" href="lcdfonts_8c.html#a0">lcdFont_barchars</a>);
00442       <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a3">DS_PERCENTAGE</a>;
00443       strcpy(<a class="code" href="display_8c.html#a1">displayTitle</a>,<span class="stringliteral">"RecLevel"</span>);
00444       <a class="code" href="display_8c.html#a5">displayValue</a> = (reclevel);
00445       <span class="keywordflow">if</span> (reclevel==0){
00446         strcpy(<a class="code" href="display_8c.html#a1">displayTitle</a>,<span class="stringliteral">"RecLevel &lt;Auto&gt; "</span>);
00447         <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a6">DS_RAWTEXT</a>; <span class="comment">//Reveal the "auto" text</span>
00448       }
00449     }<span class="keywordflow">else</span>{
00450       <span class="comment">//Not in recording</span>
00451       <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a4">DS_NO_YES</a>;
00452       strcpy (<a class="code" href="display_8c.html#a1">displayTitle</a>, <span class="stringliteral">"Record? "</span>);
00453     }
00454     <span class="keywordflow">break</span>;
00455 
00456 
00457   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a3">UI_SPEC</a>: <span class="comment">// Spectrum analyzer</span>
00458 
00459     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a> == <a class="code" href="ui_8h.html#a25a23">PS_RECORDING</a>){
00460       <a class="code" href="player_8c.html#a6">uiMode</a>++; <span class="comment">//Don't show specana when recording</span>
00461     }
00462 
00463     <a class="code" href="lcd_8h.html#a5">LcdSelectFont</a>(<a class="code" href="lcdfonts_8c.html#a2">lcdFont_vertical_barchars</a>);
00464     <a class="code" href="display_8c.html#a4">displayStyle</a> = <a class="code" href="display_8h.html#a6">DS_RAWTEXT</a>;
00465     <a class="code" href="player_8c.html#a11">ScreenSetPlayTime</a>();
00466 
00467     <span class="comment">// Request to read Spectrum Analyzer register</span>
00468     <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(7, 0x18, 0x04);
00469 
00470     <span class="comment">// Read Spectrum Analyzer registers</span>
00471     {
00472       <span class="keywordflow">for</span> (i=0;i&lt;8;i++) { <span class="comment">//for each band i in [0..7]</span>
00473         <span class="keywordtype">signed</span> <span class="keywordtype">char</span> thisband = <a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(6);
00474         
00475         <span class="comment">/* thisband now has spectrum value 0..63. We adjust it a little</span>
00476 <span class="comment">           for best image on the evakit LCD. You also get peak values</span>
00477 <span class="comment">           etc from the chip but we don't use them in the evakit screen.</span>
00478 <span class="comment">           we use 8 bands, but up to 23 are obtainable from the chip. */</span>
00479 
00480         thisband &amp;= 63;                <span class="comment">/* mask all but level info */</span>
00481         thisband &gt;&gt;= 1;                <span class="comment">/* LCD resolution is not high */</span>
00482         thisband -= 3;                 <span class="comment">/* base offset */</span> 
00483         <span class="keywordflow">if</span> (i==0) thisband -= 2;       <span class="comment">/* decrease bass bar level */</span>
00484         <span class="keywordflow">if</span> (i==6) thisband += 1;       <span class="comment">/* increase treble bar level */</span>
00485         <span class="keywordflow">if</span> (i==7) thisband += 1;       <span class="comment">/* increase treble bar level */</span>
00486         <span class="keywordflow">if</span> (thisband&gt;7) thisband = 7;  <span class="comment">/* high limit */</span>
00487         <span class="keywordflow">if</span> (thisband&lt;0) thisband =<span class="charliteral">' '</span>; <span class="comment">/* low limit */</span>
00488 
00489         <a class="code" href="display_8c.html#a1">displayTitle</a>[i+8] = thisband; <span class="comment">//Store to display mem</span>
00490         
00491       }<span class="comment">//for each band</span>
00492     }
00493     <span class="keywordflow">break</span>;
00494     
00495   } <span class="comment">//switch(uiMode)    </span>
00496 
00497   <span class="comment">// Buttons handler</span>
00498   <span class="comment">// Perform mode-dependent button handling</span>
00499 
00500   <span class="keywordflow">if</span> ((<a class="code" href="board_8h.html#a14">KEY_BUTTON</a>) &amp;&amp; (uiReturnDelay &lt; <a class="code" href="player_8c.html#a2">UI_RETURN_DELAY</a>-20)){
00501     <a class="code" href="lcd_8c.html#a4">LcdReset</a>();
00502     <a class="code" href="player_8c.html#a6">uiMode</a>++;
00503     uiReturnDelay = <a class="code" href="player_8c.html#a2">UI_RETURN_DELAY</a>;
00504   }
00505 
00506   <span class="keywordflow">switch</span>(<a class="code" href="player_8c.html#a6">uiMode</a>){
00507 
00508   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a2">UI_TITLE</a>:
00509   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a3">UI_SPEC</a>:
00510 
00511     <span class="keywordflow">if</span> (<a class="code" href="board_8h.html#a15">KEY_FARRIGHT</a>){
00512       <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a14">PS_NEXT_SONG</a>; <span class="comment">/* Request */</span>
00513     }      
00514     <span class="keywordflow">if</span> (<a class="code" href="board_8h.html#a18">KEY_FARLEFT</a>){
00515       <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a15">PS_PREVIOUS_SONG</a>; <span class="comment">/* Request */</span>
00516     }      
00517     <span class="keywordflow">break</span>;
00518 
00519 
00520   <span class="keywordflow">case</span> <a class="code" href="ui_8h.html#a24a4">UI_VOLUME</a>:
00521     
00522     <span class="keywordflow">if</span> (<a class="code" href="board_8h.html#a18">KEY_FARLEFT</a>){
00523       uiReturnDelay = <a class="code" href="player_8c.html#a2">UI_RETURN_DELAY</a>;