无损音乐

#include "Page.h"
  2 #include "MusicPage.h"
  3 #include "FileListPage.h"
  4 #include "Resources.h"
  5 
  6  static u32 ReadMusicDir(char *MusicDirPath)
  7 {
  8     FILINFO finfo;
  9 
 10     gMusicTotalNum=0;
 11     
 12 #if _USE_LFN
 13     finfo.lfname = Fs_LongFileName;
 14     finfo.lfsize = sizeof(Fs_LongFileName);
 15 #endif
 16     
 17     if (f_opendir(&gMusicDir, MusicDirPath) != FR_OK) 
 18     {
 19         Debug("Open Music Dir error!\n\r");            
 20         return FALSE;
 21     }
 22 
 23     while (f_readdir(&gMusicDir, &finfo) == FR_OK)  
 24     {
 25         if (finfo.fattrib & AM_ARC) 
 26         {
 27             if(!finfo.fname[0]) break;  
 28             if(!( CheckSuffix(finfo.lfname,".wav")&CheckSuffix(finfo.lfname,".wma")&CheckSuffix(finfo.lfname,".mp3")) ) 
 29             {
 30                 gMusicSet[gMusicTotalNum]=OS_Mallco(strlen(finfo.lfname)+1);
 31                 strcpy((void *)gMusicSet[gMusicTotalNum],(void *)finfo.lfname);
 32                 gMusicTotalNum++;                
 33             }
 34         }
 35     }
 36     
 37     return TRUE;
 38 }
 39 
 40 static u32 PlayMusic(int Selection)
 41 {
 42     if(Selection==-1) return 0;
 43     
 44     Debug("Select:%d.%s\n\r",Selection,gMusicSet[Selection]);
 45 
 46     if(gCurrentSelection!=Selection)
 47     {
 48         if(gCurrentSelection!=-1)
 49         {
 50                 if(f_close(&gMusicObj)!=FR_OK)
 51                 {
 52                     Debug("Close music file error!\n\r");
 53                 }
 54         }
 55         
 56         gCurrentSelection=Selection;
 57         gPlayOperate=Play_Start;
 58     }
 59 
 60     DispPlayName(gMusicSet[gCurrentSelection]);
 61     DispPlayMsg("正在播放...");
 62 
 63     return 0;
 64 }
 65 
 66 //-----------------------本页系统函数----------------------
 67 //当本页面成为系统当前页面时会运行的程序
 68 //一旦本页面变成非当前页面，系统会等待此
 69 //任务完成工作后暂停本线程。通过RunMutex实现
 70 static char MusicBuf[512*8];
 71 static void MusicPageRun_Task(void *Task_Parameters)
 72 {
 73     FRESULT Res;
 74     UINT ReadByte,count,j;
 75     //char MusicBuf[512*2];
 76     char MusicPath[64];
 77     char *pMusic;
 78     
 79     Debug("Music Page Run Task\n\r");
 80         
 81     while(1)
 82     {
 83         PageRunTaskLoopStart();
 84         switch(gPlayOperate)
 85         {
 86             case Play_Nothing:
 87                 OS_TaskDelayMs(200);
 88                 break;
 89             case Play_Start:
 90                 if((gCurrentSelection==-1)||gCurrentSelection>=gMusicTotalNum)
 91                 {
 92                     gPlayOperate=Play_Nothing;
 93                     break;
 94                 }
 95                 
 96                 MusicPath[0]=0;
 97                 strcat((void *)MusicPath,(void *)MUSIC_DIR_PATH"/");
 98                 strcat((void *)MusicPath,(void *)gMusicSet[gCurrentSelection]);
 99                 if ((Res=f_open(&gMusicObj ,MusicPath, FA_OPEN_EXISTING | FA_READ) )!= FR_OK ) 
100                 {
101                     Debug("Open music flie error %d!:%s\n\r",Res,MusicPath);
102                     break;
103                 }
104                 Debug("Playing...\n\r");
105                 gPlayOperate=Play_Continue;
106                 break;
107             case Play_Continue:
108                 Res=f_read(&gMusicObj, MusicBuf, sizeof(MusicBuf), &ReadByte);
109                 if(!Res && ReadByte)
110                 {
111                     pMusic=MusicBuf;                         
112             
113                     for(count=0;count<ReadByte;count+=32)
114                     {                             
115                         VS_XDCS_SET(0);
116                         for(j=32;j>0;j--)//每次送32个数据
117                         {
118                             SPI1_Write_Byte(*pMusic++);                            
119                         }
120                           VS_XDCS_SET(1);
121                           
122                         while(!VS_DREQ)
123                         {
124 
125                         }
126                       }           
127                     
128                    }
129                    else
130                    {
131                        Debug("Read music file %s end!\n\r",MusicPath);
132 
133                     VS_XDCS_SET(0);
134                     for(count=64;count;count--)
135                     {         
136                         for(j=32;j>0;j--)//每次送32个数据
137                         {
138                             SPI1_Write_Byte(0);                            
139                         }
140                         while(!VS_DREQ);// OS_TaskDelayMs(5);
141                       } 
142                       VS_XDCS_SET(1);
143                       
144                     if((gCurrentSelection+1)<gMusicTotalNum)
145                     {
146                         PlayMusic(gCurrentSelection+1);
147                        }
148                        else
149                        {
150                         PlayMusic(0);
151                        }
152                    }                   
153                 break;
154             case Play_Stop:
155                 Debug("Stop playing %s\n\r",MusicPath);
156                 if(f_close(&gMusicObj)!=FR_OK)
157                 {
158                     Debug("Close music file error!\n\r");
159                 }
160                 gPlayOperate=Play_Start;
161                 break;
162             case Play_ChangeVol:
163                 Debug("Set music output vol to %d\n\r",VolumeTable[gMusicVol]);
164                 Mp3SetVolume(VolumeTable[gMusicVol],VolumeTable[gMusicVol]);
165                 if(gCurrentSelection==-1)
166                 {
167                     DispPlayMsg("请选择文件!");
168                     gPlayOperate=Play_Start;
169                 }
170                 else
171                 {
172                     DispPlayMsg("正在播放...");
173                     gPlayOperate=Play_Continue;
174                 }
175                 break;
176         }
177         PageRunTaskLoopStop();
178     }
179 }
180 
181 //在每次本页面变成系统当前页面时会调用的程序
182 static int SystemEventHandlerMusicPage(SYSTEM_EVENT_TYPE SysEvent ,int IntParam, void *pSysParam)
183 {
184     static u8 PageFristInit_Flag=0;
185     GUI_REGION DrawRegion;
186     int i;
187     
188     switch(SysEvent)
189     {
190         case Sys_Page_Init:        
191         case Sys_SubPage_Return:
192             if(!PageFristInit_Flag)  //页面首次创建时需要做的事情
193             {
194                 gMusicPageRunMutex=OS_SemaphoreCreateMutex();
195                 OS_TaskCreate(MusicPageRun_Task , ( signed OS_CHAR * ) "MusicPageRun", OS_MINI_STACK_SIZE, NULL, MUSIC_TASK_PRIORITY, NULL );            
196 
197                 gCurrentSelection=-1;
198                 gPlayOperate=Play_Nothing;
199 
200                 gMusicVol=6;
201                 Mp3Start(VolumeTable[gMusicVol],VolumeTable[gMusicVol]);                    
202             }
203             DrawRegion.x=DrawRegion.y=0;
204             DrawRegion.w=1;
205             DrawRegion.h=320;
206             Gui_FillImageArray_H((u8 *)gImage_MainBg,240,&DrawRegion);
207             DispTime();
208             break;
209         case Sys_TouchRegionSetFinish:
210             DispPlayName("");
211             DispPlayMsg("请选择文件!");
212 
213             if(!PageFristInit_Flag)  //页面首次创建时需要做的事情
214             {
215                 PageFristInit_Flag=1;
216                 ReadMusicDir(MUSIC_DIR_PATH);
217                 for(i=0;i<gMusicTotalNum;i++)
218                 {
219                     Debug("%d:%s\n\r",i,gMusicSet[i]);
220                 }
221             }            
222             
223             if(IntParam!=-1)
224             {
225                 Debug("Play %s\n\r",gMusicSet[IntParam]);
226                 PlayMusic(IntParam);
227             }
228             else
229             {
230                 PlayMusic(gCurrentSelection);
231             }
232             break;
233         case Sys_Page_Clean:
234             break;
235         case Sys_Rtc_Min:
236             DispTime();
237             break;
238     }
239     
240     return 0;
241 }
242 
243 static int TouchEventHandlerMusicPage(int Key,TOUCH_EVENT_TYPE InEvent , TOUCH_INFO *pTouchInfo)
244 {
245     FILE_LIST_PAGE_SET FileListParam;
246     
247     if(InEvent!=Touch_Key_Release) return 0;
248     
249     switch(Key)
250     {
251         case MusicKey_ExtiKey0:
252             PrtScreen();
253             break;
254         case MusicKey_VolumeUp:
255             if(gMusicVol<VOL_STEP-1)
256             {
257                 gMusicVol++;
258                 gPlayOperate=Play_ChangeVol;
259             }
260             break;
261         case MusicKey_VolumeDown:        
262             if(gMusicVol>0)
263             {
264                 gMusicVol--;
265                 gPlayOperate=Play_ChangeVol;
266             }
267             break;
268         case MusicKey_PreOne:
269             if(gCurrentSelection>0)
270             {
271                 PlayMusic(gCurrentSelection-1);
272              }
273             else
274             {
275                 PlayMusic(gMusicTotalNum-1);
276             }
277             break;
278         case MusicKey_NextOne:
279             if((gCurrentSelection+1)<gMusicTotalNum)
280             {
281                 PlayMusic(gCurrentSelection+1);
282              }
283             else
284             {
285                 PlayMusic(0);
286             }
287             break;        
288         case MusicKey_Find:
289             FileListParam.pCallerPageRid="0.1";
290             FileListParam.pFileSet=gMusicSet;
291             FileListParam.FileTotalNum=gMusicTotalNum;
292             GotoPage("0.1.1",gCurrentSelection,&FileListParam);
293             break;
294         case MusicKey_Pause:
295             if(gCurrentSelection!=-1)
296             {
297                 DispPlayMsg("暂停播放");
298                 gPlayOperate=Play_Nothing;
299             }
300             break;            
301         case MusicKey_Play:
302             if(gCurrentSelection==-1)
303             {
304                 DispPlayMsg("请选择文件!");
305                 gPlayOperate=Play_Start;
306             }
307             else
308             {
309                 DispPlayMsg("正在播放...");
310                 gPlayOperate=Play_Continue;
311             }
312             break;
313         case MusicKey_Return:
314             GotoPage("0",-1,NULL);
315             break;
316     }
317     
318     return 0;
319 }