apps/plugins/video.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Plugin for video playback
  11 * Reads raw image data + audio data from a file
  12 * !!!!!!!!!! Code Police free zone !!!!!!!!!!
  13 *
  14 * Copyright (C) 2003-2004 J�g Hohensohn aka [IDC]Dragon
  15 *
  16 * This program is free software; you can redistribute it and/or
  17 * modify it under the terms of the GNU General Public License
  18 * as published by the Free Software Foundation; either version 2
  19 * of the License, or (at your option) any later version.
  20 *
  21 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  22 * KIND, either express or implied.
  23 *
  24 ****************************************************************************/
  25
  26
  27 /****************** imports ******************/
  28
  29 #include "plugin.h"
  30 #include "sh7034.h"
  31 #include "system.h"
  32 #include "lib/helper.h"
  33
  34 #ifdef HAVE_LCD_BITMAP /* and definitely not for the Player, haha */
  35
  36 PLUGIN_HEADER
  37
  38 /* variable button definitions */
  39 #if CONFIG_KEYPAD == RECORDER_PAD
  40 #define VIDEO_STOP_SEEK BUTTON_PLAY
  41 #define VIDEO_RESUME BUTTON_PLAY
  42 #define VIDEO_DEBUG BUTTON_F1
  43 #define VIDEO_CONTRAST_DOWN BUTTON_F2
  44 #define VIDEO_CONTRAST_UP BUTTON_F3
  45
  46 #elif CONFIG_KEYPAD == ONDIO_PAD
  47 #define VIDEO_STOP_SEEK_PRE BUTTON_MENU
  48 #define VIDEO_STOP_SEEK (BUTTON_MENU | BUTTON_REL)
  49 #define VIDEO_RESUME BUTTON_RIGHT
  50 #define VIDEO_CONTRAST_DOWN (BUTTON_MENU | BUTTON_DOWN)
  51 #define VIDEO_CONTRAST_UP (BUTTON_MENU | BUTTON_UP)
  52
  53 #endif
  54 /****************** constants ******************/
  55
  56 #define SCREENSIZE (LCD_WIDTH*LCD_HEIGHT/8) /* in bytes */
  57 #define FPS 68 /* default fps for headerless (old video-only) file */
  58 #define MAX_ACC 20 /* maximum FF/FR speedup */
  59 #define FF_TICKS 3000; /* experimentally found nice */
  60
  61 /* trigger levels, we need about 80 kB/sec */
  62 #define SPINUP_INIT 5000 /* from what level on to refill, in milliseconds */
  63 #define SPINUP_SAFETY 700 /* how much on top of the measured spinup time */
  64 #define CHUNK (1024*32) /* read size */
  65
  66
  67 /****************** prototypes ******************/
  68 void timer4_isr(void); /* IMIA4 ISR */
  69 int check_button(void); /* determine next relative frame */
  70
  71
  72 /****************** data types ******************/
  73
  74 /* plugins don't introduce headers, so structs are repeated from rvf_format.h */
  75
  76 #define HEADER_MAGIC 0x52564668 /* "RVFh" at file start  */
  77 #define AUDIO_MAGIC  0x41756446 /* "AudF" for each audio block */
  78 #define FILEVERSION  100 /* 1.00 */
  79
  80 /* format type definitions */
  81 #define VIDEOFORMAT_NO_VIDEO       0
  82 #define VIDEOFORMAT_RAW            1
  83 #define AUDIOFORMAT_NO_AUDIO       0
  84 #define AUDIOFORMAT_MP3            1
  85 #define AUDIOFORMAT_MP3_BITSWAPPED 2
  86
  87 /* bit flags */
  88 #define FLAG_LOOP 0x00000001 /* loop the playback, e.g. for stills */
  89
  90 typedef struct /* contains whatever might be useful to the player */
  91 {
  92     /* general info (16 entries = 64 byte) */
  93     unsigned long magic; /* HEADER_MAGIC */
  94     unsigned long version; /* file version */
  95     unsigned long flags; /* combination of FLAG_xx */
  96     unsigned long blocksize; /* how many bytes per block (=video frame) */
  97     unsigned long bps_average; /* bits per second of the whole stream */
  98     unsigned long bps_peak; /* max. of above (audio may be VBR) */
  99     unsigned long resume_pos; /* file position to resume to */
 100     unsigned long reserved[9]; /* reserved, should be zero */
 101
 102     /* video info (16 entries = 64 byte) */
 103     unsigned long video_format; /* one of VIDEOFORMAT_xxx */
 104     unsigned long video_1st_frame; /* byte position of first video frame */
 105     unsigned long video_duration; /* total length of video part, in ms */
 106     unsigned long video_payload_size; /* total amount of video data, in bytes */
 107     unsigned long video_bitrate; /* derived from resolution and frame time, in bps */
 108     unsigned long video_frametime; /* frame interval in 11.0592 MHz clocks */
 109     long video_preroll; /* video is how much ahead, in 11.0592 MHz clocks */
 110     unsigned long video_width; /* in pixels */
 111     unsigned long video_height; /* in pixels */
 112     unsigned long video_reserved[7]; /* reserved, should be zero */
 113
 114     /* audio info (16 entries = 64 byte) */
 115     unsigned long audio_format; /* one of AUDIOFORMAT_xxx */
 116     unsigned long audio_1st_frame; /* byte position of first video frame */
 117     unsigned long audio_duration; /* total length of audio part, in ms */
 118     unsigned long audio_payload_size; /* total amount of audio data, in bytes */
 119     unsigned long audio_avg_bitrate; /* average audio bitrate, in bits per second */
 120     unsigned long audio_peak_bitrate; /* maximum bitrate */
 121     unsigned long audio_headersize; /* offset to payload in audio frames */
 122     long audio_min_associated; /* minimum offset to video frame, in bytes */
 123     long audio_max_associated; /* maximum offset to video frame, in bytes */
 124     unsigned long audio_reserved[7]; /* reserved, should be zero */
 125
 126     /* more to come... ? */
 127
 128     /* Note: padding up to 'blocksize' with zero following this header */
 129 } tFileHeader;
 130
 131 typedef struct /* the little header for all audio blocks */
 132 {
 133     unsigned long magic; /* AUDIO_MAGIC indicates an audio block */
 134     unsigned char previous_block; /* previous how many blocks backwards */
 135     unsigned char next_block; /* next how many blocks forward */
 136     short associated_video; /* offset to block with corresponding video */
 137     unsigned short frame_start; /* offset to first frame starting in this block */
 138     unsigned short frame_end; /* offset to behind last frame ending in this block */
 139 } tAudioFrameHeader;
 140
 141
 142
 143 /****************** globals ******************/
 144
 145 static char gPrint[32]; /* a global printf buffer, saves stack */
 146
 147
 148 /* playstate */
 149 static struct
 150 {
 151     enum
 152     {
 153         paused,
 154         playing,
 155     } state;
 156     bool bAudioUnderrun;
 157     bool bVideoUnderrun;
 158     bool bHasAudio;
 159     bool bHasVideo;
 160     int nTimeOSD; /* OSD should stay for this many frames */
 161     bool bDirtyOSD; /* OSD needs redraw */
 162     bool bRefilling; /* set if refilling buffer */
 163     bool bSeeking;
 164     int nSeekAcc; /* accelleration value for seek */
 165     int nSeekPos; /* current file position for seek */
 166     bool bDiskSleep; /* disk is suspended */
 167 #if FREQ == 12000000 /* Ondio speed kludge */
 168     int nFrameTimeAdjusted;
 169 #endif
 170 } gPlay;
 171
 172 /* buffer information */
 173 static struct
 174 {
 175     ssize_t bufsize;
 176     int granularity; /* common multiple of block and sector size */
 177     unsigned char* pBufStart; /* start of ring buffer */
 178     unsigned char* pBufEnd; /* end of ring buffer */
 179     int osd_ypos;
 180     int osd_height;
 181
 182     int vidcount; /* how many video blocks are known in a row */
 183     unsigned char* pBufFill; /* write pointer for disk, owned by main task */
 184     unsigned char* pReadVideo; /* video readout, maintained by timer ISR */
 185     unsigned char* pReadAudio; /* audio readout, maintained by demand ISR */
 186     bool bEOF; /* flag for end of file */
 187     int low_water; /* reload threshold  */
 188     int high_water; /* end of reload threshold */
 189     int spinup_safety; /* safety margin when recalculating low_water */
 190     int nReadChunk; /* how much data for normal buffer fill */
 191     int nSeekChunk; /* how much data while seeking */
 192 } gBuf;
 193
 194 /* statistics */
 195 static struct
 196 {
 197     int minAudioAvail;
 198     int minVideoAvail;
 199     int nAudioUnderruns;
 200     int nVideoUnderruns;
 201     long minSpinup;
 202     long maxSpinup;
 203 } gStats;
 204
 205 tFileHeader gFileHdr; /* file header */
 206
 207 /****************** implementation ******************/
 208
 209 /* tool function: return how much playable audio/video is left */
 210 int Available(unsigned char* pSnapshot)
 211 {
 212     if (pSnapshot <= gBuf.pBufFill)
 213         return gBuf.pBufFill - pSnapshot;
 214     else
 215         return gBuf.bufsize - (pSnapshot - gBuf.pBufFill);
 216 }
 217
 218 /* debug function to draw buffer indicators */
 219 void DrawBuf(void)
 220 {
 221     int ypos, fill, video, audio;
 222
 223     rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 224     rb->lcd_fillrect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 225     rb->lcd_set_drawmode(DRMODE_SOLID);
 226
 227     ypos = gBuf.osd_ypos + gBuf.osd_height/2 - 3; /* center vertically */
 228
 229     rb->lcd_hline(1, LCD_WIDTH-2, ypos + 3);
 230     rb->lcd_vline(0, ypos, ypos + 6);
 231     rb->lcd_vline(LCD_WIDTH-1, ypos, ypos + 6);
 232
 233     /* calculate new tick positions */
 234     fill = 1 + ((gBuf.pBufFill - gBuf.pBufStart) * (LCD_WIDTH-2)) / gBuf.bufsize;
 235     video = 1 + ((gBuf.pReadVideo - gBuf.pBufStart) * (LCD_WIDTH-2)) / gBuf.bufsize;
 236     audio = 1 + ((gBuf.pReadAudio - gBuf.pBufStart) * (LCD_WIDTH-2)) / gBuf.bufsize;
 237
 238     rb->lcd_drawpixel(fill, ypos + 4);
 239     rb->lcd_drawpixel(video, ypos + 2);
 240     rb->lcd_drawpixel(audio, ypos + 1);
 241
 242     if (gPlay.state == paused) /* we have to draw ourselves */
 243         rb->lcd_update_rect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 244     else
 245         gPlay.bDirtyOSD = true; /* redraw it with next timer IRQ */
 246 }
 247
 248
 249 /* helper function to draw a position indicator */
 250 void DrawPosition(int pos, int total)
 251 {
 252     int w, h;
 253     int sec; /* estimated seconds */
 254     int ypos;
 255
 256     rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 257     rb->lcd_fillrect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 258     rb->lcd_set_drawmode(DRMODE_SOLID);
 259
 260     /* print the estimated position */
 261     sec = pos / (gFileHdr.bps_average/8);
 262     if (sec < 100*60) /* fits into mm:ss format */
 263         rb->snprintf(gPrint, sizeof(gPrint), "%02d:%02dm", sec/60, sec%60);
 264     else /* a very long clip, hh:mm format */
 265         rb->snprintf(gPrint, sizeof(gPrint), "%02d:%02dh", sec/3600, (sec/60)%60);
 266
 267     rb->lcd_getstringsize(gPrint, &w, &h);
 268     w++;
 269     ypos = gBuf.osd_ypos + (gBuf.osd_height - h) / 2;
 270     rb->lcd_putsxy(0, ypos, gPrint);
 271
 272     /* draw a slider over the rest of the line */
 273     rb->gui_scrollbar_draw(rb->screens[SCREEN_MAIN], w, ypos, LCD_WIDTH-w,
 274                              h, total, 0, pos, HORIZONTAL);
 275
 276     if (gPlay.state == paused) /* we have to draw ourselves */
 277         rb->lcd_update_rect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 278     else /* let the display time do it */
 279     {
 280         gPlay.nTimeOSD = FPS;
 281         gPlay.bDirtyOSD = true; /* redraw it with next timer IRQ */
 282     }
 283 }
 284
 285 /* Put text on OSD and activate it for 1 second */
 286 void osd_show_text(void)
 287 {
 288     int h, ypos;
 289
 290     rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 291     rb->lcd_fillrect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 292     rb->lcd_set_drawmode(DRMODE_SOLID);
 293
 294     rb->lcd_getstringsize(gPrint, NULL, &h);
 295     ypos = gBuf.osd_ypos + (gBuf.osd_height - h) / 2;
 296     rb->lcd_putsxy(0, ypos, gPrint);
 297
 298     if (gPlay.state == paused) /* we have to draw ourselves */
 299         rb->lcd_update_rect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 300     else /* let the display time do it */
 301     {
 302         gPlay.nTimeOSD = FPS; /* display it for 1 sec */
 303         gPlay.bDirtyOSD = true; /* let the refresh copy it to LCD */
 304     }
 305 }
 306
 307 /* helper function to change the volume by a certain amount, +/- */
 308 void ChangeVolume(int delta)
 309 {
 310     int minvol = rb->sound_min(SOUND_VOLUME);
 311     int maxvol = rb->sound_max(SOUND_VOLUME);
 312     int vol = rb->global_settings->volume + delta;
 313
 314     if (vol > maxvol) vol = maxvol;
 315     else if (vol < minvol) vol = minvol;
 316     if (vol != rb->global_settings->volume)
 317     {
 318         rb->sound_set(SOUND_VOLUME, vol);
 319         rb->global_settings->volume = vol;
 320
 321         rb->snprintf(gPrint, sizeof(gPrint), "Vol: %d dB", vol);
 322         osd_show_text();
 323     }
 324 }
 325
 326
 327 /* helper function to change the LCD contrast by a certain amount, +/- */
 328 void ChangeContrast(int delta)
 329 {
 330     static int mycontrast = -1; /* the "permanent" value while running */
 331     int contrast; /* updated value */
 332
 333     if (mycontrast == -1)
 334         mycontrast = rb->global_settings->contrast;
 335
 336     contrast = mycontrast + delta;
 337     if (contrast > 63) contrast = 63;
 338     else if (contrast < 5) contrast = 5;
 339     if (contrast != mycontrast)
 340     {
 341         rb->lcd_set_contrast(contrast);
 342         mycontrast = contrast;
 343
 344         rb->snprintf(gPrint, sizeof(gPrint), "Contrast: %d", contrast);
 345         osd_show_text();
 346     }
 347 }
 348
 349
 350 /* sync the video to the current audio */
 351 void SyncVideo(void)
 352 {
 353     tAudioFrameHeader* pAudioBuf;
 354
 355     pAudioBuf = (tAudioFrameHeader*)(gBuf.pReadAudio);
 356     if (pAudioBuf->magic == AUDIO_MAGIC)
 357     {
 358         gBuf.vidcount = 0; /* nothing known */
 359         /* sync the video position */
 360         gBuf.pReadVideo = gBuf.pReadAudio +
 361             (long)pAudioBuf->associated_video * (long)gFileHdr.blocksize;
 362
 363         /* handle possible wrap */
 364         if (gBuf.pReadVideo >= gBuf.pBufEnd)
 365             gBuf.pReadVideo -= gBuf.bufsize;
 366         else if (gBuf.pReadVideo < gBuf.pBufStart)
 367             gBuf.pReadVideo += gBuf.bufsize;
 368     }
 369 }
 370
 371
 372 /* timer interrupt handler to display a frame */
 373 void timer4_isr(void)
 374 {
 375     int available;
 376     tAudioFrameHeader* pAudioBuf;
 377     int height; /* height to display */
 378
 379     /* reduce height if we have OSD on */
 380     height = gFileHdr.video_height;
 381     if (gPlay.nTimeOSD > 0)
 382     {
 383         gPlay.nTimeOSD--;
 384         height = MIN(gBuf.osd_ypos, height);
 385         if (gPlay.bDirtyOSD)
 386         {
 387             rb->lcd_update_rect(0, gBuf.osd_ypos, LCD_WIDTH, gBuf.osd_height);
 388             gPlay.bDirtyOSD = false;
 389         }
 390     }
 391
 392     rb->lcd_blit_mono(gBuf.pReadVideo, 0, 0,
 393         gFileHdr.video_width, height/8, gFileHdr.video_width);
 394
 395     available = Available(gBuf.pReadVideo);
 396
 397     /* loop to skip audio frame(s) */
 398     while(1)
 399     {
 400         /* just for the statistics */
 401         if (!gBuf.bEOF && available < gStats.minVideoAvail)
 402             gStats.minVideoAvail = available;
 403
 404         if (available <= (int)gFileHdr.blocksize)
 405         {   /* no data for next frame */
 406
 407             if (gBuf.bEOF && (gFileHdr.flags & FLAG_LOOP))
 408             {   /* loop now, assuming the looped clip fits in memory */
 409                 gBuf.pReadVideo = gBuf.pBufStart + gFileHdr.video_1st_frame;
 410                 /* FixMe: pReadVideo is incremented below */
 411             }
 412             else
 413             {
 414                 gPlay.bVideoUnderrun = true;
 415                 rb->timer_unregister(); /* disable ourselves */
 416                 return; /* no data available */
 417             }
 418         }
 419         else /* normal advance for next time */
 420         {
 421             gBuf.pReadVideo += gFileHdr.blocksize;
 422             if (gBuf.pReadVideo >= gBuf.pBufEnd)
 423                 gBuf.pReadVideo -= gBuf.bufsize; /* wraparound */
 424             available -= gFileHdr.blocksize;
 425         }
 426
 427         if (!gPlay.bHasAudio)
 428             break; /* no need to skip any audio */
 429
 430         if (gBuf.vidcount)
 431         {
 432             /* we know the next is a video frame */
 433             gBuf.vidcount--;
 434             break; /* exit the loop */
 435         }
 436
 437         pAudioBuf = (tAudioFrameHeader*)(gBuf.pReadVideo);
 438         if (pAudioBuf->magic == AUDIO_MAGIC)
 439         {   /* we ran into audio, can happen after seek */
 440             gBuf.vidcount = pAudioBuf->next_block;
 441             if (gBuf.vidcount)
 442                 gBuf.vidcount--; /* minus the audio block */
 443         }
 444     } /* while */
 445 }
 446
 447
 448 /* ISR function to get more mp3 data */
 449 void GetMoreMp3(unsigned char** start, size_t* size)
 450 {
 451     int available;
 452     int advance;
 453
 454     tAudioFrameHeader* pAudioBuf = (tAudioFrameHeader*)(gBuf.pReadAudio);
 455
 456     advance = pAudioBuf->next_block * gFileHdr.blocksize;
 457
 458     available = Available(gBuf.pReadAudio);
 459
 460     /* just for the statistics */
 461     if (!gBuf.bEOF && available < gStats.minAudioAvail)
 462         gStats.minAudioAvail = available;
 463
 464     if (available < advance + (int)gFileHdr.blocksize || advance == 0)
 465     {
 466         gPlay.bAudioUnderrun = true;
 467         return; /* no data available */
 468     }
 469
 470     gBuf.pReadAudio += advance;
 471     if (gBuf.pReadAudio >= gBuf.pBufEnd)
 472         gBuf.pReadAudio -= gBuf.bufsize; /* wraparound */
 473
 474     *start = gBuf.pReadAudio + gFileHdr.audio_headersize;
 475     *size = gFileHdr.blocksize - gFileHdr.audio_headersize;
 476 }
 477
 478
 479 int WaitForButton(void)
 480 {
 481     int button;
 482
 483     do
 484     {
 485         button = rb->button_get(true);
 486         rb->default_event_handler(button);
 487     } while ((button & BUTTON_REL) && button != SYS_USB_CONNECTED);
 488
 489     return button;
 490 }
 491
 492
 493 bool WantResume(int fd)
 494 {
 495     int button;
 496
 497     rb->lcd_puts(0, 0, "Resume to this");
 498     rb->lcd_puts(0, 1, "last position?");
 499     rb->lcd_puts(0, 2, "PLAY = yes");
 500     rb->lcd_puts(0, 3, "Any Other = no");
 501     rb->lcd_puts(0, 4, " (plays from start)");
 502     DrawPosition(gFileHdr.resume_pos, rb->filesize(fd));
 503     rb->lcd_update();
 504
 505     button = WaitForButton();
 506     return (button == VIDEO_RESUME);
 507 }
 508
 509
 510 int SeekTo(int fd, int nPos)
 511 {
 512     int read_now, got_now;
 513
 514     if (gPlay.bHasAudio)
 515         rb->mp3_play_stop(); /* stop audio ISR */
 516     if (gPlay.bHasVideo)
 517         rb->timer_unregister(); /* stop the timer */
 518
 519     rb->lseek(fd, nPos, SEEK_SET);
 520
 521     gBuf.pBufFill = gBuf.pBufStart; /* all empty */
 522     gBuf.pReadVideo = gBuf.pReadAudio = gBuf.pBufStart;
 523
 524     read_now = gBuf.low_water - 1; /* less than low water, so loading will continue */
 525     read_now -= read_now % gBuf.granularity; /* round down to granularity */
 526     got_now = rb->read(fd, gBuf.pBufFill, read_now);
 527     gBuf.bEOF = (read_now != got_now);
 528     gBuf.pBufFill += got_now;
 529
 530     if (nPos == 0)
 531     {   /* we seeked to the start */
 532         if (gPlay.bHasVideo)
 533             gBuf.pReadVideo += gFileHdr.video_1st_frame;
 534
 535         if (gPlay.bHasAudio)
 536             gBuf.pReadAudio += gFileHdr.audio_1st_frame;
 537     }
 538     else
 539     {   /* we have to search for the positions */
 540         if (gPlay.bHasAudio) /* prepare audio playback, if contained */
 541         {
 542             /* search for audio frame */
 543             while (((tAudioFrameHeader*)(gBuf.pReadAudio))->magic != AUDIO_MAGIC)
 544                 gBuf.pReadAudio += gFileHdr.blocksize;
 545
 546             if (gPlay.bHasVideo)
 547                 SyncVideo(); /* pick the right video for that */
 548         }
 549     }
 550
 551     /* synchronous start */
 552     gPlay.state = playing;
 553     if (gPlay.bHasAudio)
 554     {
 555         gPlay.bAudioUnderrun = false;
 556         rb->mp3_play_data(gBuf.pReadAudio + gFileHdr.audio_headersize,
 557                 gFileHdr.blocksize - gFileHdr.audio_headersize, GetMoreMp3);
 558         rb->mp3_play_pause(true); /* kickoff audio */
 559     }
 560     if (gPlay.bHasVideo)
 561     {
 562         gPlay.bVideoUnderrun = false;
 563         /* start display interrupt */
 564 #if FREQ == 12000000 /* Ondio speed kludge */
 565         rb->timer_register(1, NULL, gPlay.nFrameTimeAdjusted,
 566                            timer4_isr IF_COP(, CPU));
 567 #else
 568         rb->timer_register(1, NULL, gFileHdr.video_frametime,
 569                            timer4_isr IF_COP(, CPU));
 570 #endif
 571     }
 572
 573     return 0;
 574 }
 575
 576 /* called from default_event_handler_ex() or at end of playback */
 577 void Cleanup(void *fd)
 578 {
 579     rb->close(*(int*)fd); /* close the file */
 580
 581     if (gPlay.bHasVideo)
 582         rb->timer_unregister(); /* stop video ISR, now I can use the display again */
 583
 584     if (gPlay.bHasAudio)
 585         rb->mp3_play_stop(); /* stop audio ISR */
 586
 587     /* Turn on backlight timeout (revert to settings) */
 588     backlight_use_settings(); /* backlight control in lib/helper.c */
 589
 590     /* restore normal contrast */
 591     rb->lcd_set_contrast(rb->global_settings->contrast);
 592 }
 593
 594 /* returns >0 if continue, =0 to stop, <0 to abort (USB) */
 595 int PlayTick(int fd)
 596 {
 597     int button;
 598     static int lastbutton = 0;
 599     int avail_audio = -1, avail_video = -1;
 600     int retval = 1;
 601     int filepos;
 602
 603     /* check buffer level */
 604
 605     if (gPlay.bHasAudio)
 606         avail_audio = Available(gBuf.pReadAudio);
 607     if (gPlay.bHasVideo)
 608         avail_video = Available(gBuf.pReadVideo);
 609
 610     if ((gPlay.bHasAudio && avail_audio < gBuf.low_water)
 611      || (gPlay.bHasVideo && avail_video < gBuf.low_water))
 612     {
 613         gPlay.bRefilling = true; /* go to refill mode */
 614     }
 615
 616     if ((!gPlay.bHasAudio || gPlay.bAudioUnderrun)
 617      && (!gPlay.bHasVideo || gPlay.bVideoUnderrun)
 618      && gBuf.bEOF)
 619     {
 620         if (gFileHdr.resume_pos)
 621         {   /* we played til the end, clear resume position */
 622             gFileHdr.resume_pos = 0;
 623             rb->lseek(fd, 0, SEEK_SET); /* save resume position */
 624             rb->write(fd, &gFileHdr, sizeof(gFileHdr));
 625         }
 626         Cleanup(&fd);
 627         return 0; /* all expired */
 628     }
 629
 630     if (!gPlay.bRefilling || gBuf.bEOF)
 631     {   /* nothing to do */
 632         button = rb->button_get_w_tmo(HZ/10);
 633     }
 634     else
 635     {   /* refill buffer */
 636         int read_now, got_now;
 637         int buf_free;
 638         long spinup; /* measure the spinup time */
 639
 640         /* how much can we reload, don't fill completely, would appear empty */
 641         buf_free = gBuf.bufsize - MAX(avail_audio, avail_video) - gBuf.high_water;
 642         if (buf_free < 0)
 643             buf_free = 0; /* just for safety */
 644         buf_free -= buf_free % gBuf.granularity; /* round down to granularity */
 645
 646         /* in one piece max. up to buffer end (wrap after that) */
 647         read_now = MIN(buf_free, gBuf.pBufEnd - gBuf.pBufFill);
 648
 649         /* load piecewise, to stay responsive */
 650         read_now = MIN(read_now, gBuf.nReadChunk);
 651
 652         if (read_now == buf_free)
 653             gPlay.bRefilling = false; /* last piece requested */
 654
 655         spinup = *rb->current_tick; /* in case this is interesting below */
 656
 657         got_now = rb->read(fd, gBuf.pBufFill, read_now);
 658         if (got_now != read_now || read_now == 0)
 659         {
 660             gBuf.bEOF = true;
 661             gPlay.bRefilling = false;
 662         }
 663
 664         if (gPlay.bDiskSleep) /* statistics about the spinup time */
 665         {
 666             spinup = *rb->current_tick - spinup;
 667             gPlay.bDiskSleep = false;
 668             if (spinup > gStats.maxSpinup)
 669                 gStats.maxSpinup = spinup;
 670             if (spinup < gStats.minSpinup)
 671                 gStats.minSpinup = spinup;
 672
 673             /* recalculate the low water mark from real measurements */
 674             gBuf.low_water = (gStats.maxSpinup + gBuf.spinup_safety)
 675                              * gFileHdr.bps_peak / 8 / HZ;
 676         }
 677
 678         if (!gPlay.bRefilling
 679 #ifdef HAVE_DISK_STORAGE
 680             && rb->global_settings->disk_spindown < 20  /* condition for test only */
 681 #endif
 682             )
 683         {
 684             rb->storage_sleep(); /* no point in leaving the disk run til timeout */
 685             gPlay.bDiskSleep = true;
 686         }
 687
 688         gBuf.pBufFill += got_now;
 689         if (gBuf.pBufFill >= gBuf.pBufEnd)
 690             gBuf.pBufFill = gBuf.pBufStart; /* wrap */
 691
 692         rb->yield(); /* have mercy with the other threads */
 693         button = rb->button_get(false);
 694     }
 695
 696     /* check keypresses */
 697
 698     if (button != BUTTON_NONE)
 699     {
 700         filepos = rb->lseek(fd, 0, SEEK_CUR);
 701
 702         if (gPlay.bHasVideo) /* video position is more accurate */
 703             filepos -= Available(gBuf.pReadVideo); /* take video position */
 704         else
 705             filepos -= Available(gBuf.pReadAudio); /* else audio */
 706
 707         switch (button) {   /* set exit conditions */
 708         case BUTTON_OFF:
 709             if (gFileHdr.magic == HEADER_MAGIC /* only if file has header */
 710                 && !(gFileHdr.flags & FLAG_LOOP)) /* not for stills */
 711             {
 712                 gFileHdr.resume_pos = filepos;
 713                 rb->lseek(fd, 0, SEEK_SET); /* save resume position */
 714                 rb->write(fd, &gFileHdr, sizeof(gFileHdr));
 715             }
 716             Cleanup(&fd);
 717             retval = 0; /* signal "stopped" to caller */
 718             break;
 719         case VIDEO_STOP_SEEK:
 720 #ifdef VIDEO_STOP_SEEK_PRE
 721             if (lastbutton != VIDEO_STOP_SEEK_PRE)
 722                 break;
 723 #endif
 724             if (gPlay.bSeeking)
 725             {
 726                 gPlay.bSeeking = false;
 727                 gPlay.state = playing;
 728                 SeekTo(fd, gPlay.nSeekPos);
 729             }
 730             else if (gPlay.state == playing)
 731             {
 732                 gPlay.state = paused;
 733                 if (gPlay.bHasAudio)
 734                     rb->mp3_play_pause(false); /* pause audio */
 735                 if (gPlay.bHasVideo)
 736                     rb->timer_unregister(); /* stop the timer */
 737             }
 738             else if (gPlay.state == paused)
 739             {
 740                 gPlay.state = playing;
 741                 if (gPlay.bHasAudio)
 742                 {
 743                     if (gPlay.bHasVideo)
 744                         SyncVideo();
 745                     rb->mp3_play_pause(true); /* play audio */
 746                 }
 747                 if (gPlay.bHasVideo)
 748                 {   /* start the video */
 749 #if FREQ == 12000000 /* Ondio speed kludge */
 750                     rb->timer_register(1, NULL,
 751                         gPlay.nFrameTimeAdjusted, timer4_isr);
 752 #else
 753                     rb->timer_register(1, NULL,
 754                         gFileHdr.video_frametime, timer4_isr);
 755 #endif
 756                 }
 757             }
 758             break;
 759         case BUTTON_UP:
 760         case BUTTON_UP | BUTTON_REPEAT:
 761             if (gPlay.bHasAudio)
 762                 ChangeVolume(1);
 763             break;
 764         case BUTTON_DOWN:
 765         case BUTTON_DOWN | BUTTON_REPEAT:
 766             if (gPlay.bHasAudio)
 767                 ChangeVolume(-1);
 768             break;
 769         case BUTTON_LEFT:
 770         case BUTTON_LEFT | BUTTON_REPEAT:
 771             if (!gPlay.bSeeking) /* prepare seek */
 772             {
 773                 gPlay.nSeekPos = filepos;
 774                 gPlay.bSeeking = true;
 775                 gPlay.nSeekAcc = 0;
 776             }
 777             else if (gPlay.nSeekAcc > 0) /* other direction, stop sliding */
 778                 gPlay.nSeekAcc = 0;
 779             else
 780                 gPlay.nSeekAcc--;
 781             break;
 782         case BUTTON_RIGHT:
 783         case BUTTON_RIGHT | BUTTON_REPEAT:
 784             if (!gPlay.bSeeking) /* prepare seek */
 785             {
 786                 gPlay.nSeekPos = filepos;
 787                 gPlay.bSeeking = true;
 788                 gPlay.nSeekAcc = 0;
 789             }
 790             else if (gPlay.nSeekAcc < 0) /* other direction, stop sliding */
 791                 gPlay.nSeekAcc = 0;
 792             else
 793                 gPlay.nSeekAcc++;
 794             break;
 795 #ifdef VIDEO_DEBUG
 796         case VIDEO_DEBUG: /* debug key */
 797         case VIDEO_DEBUG | BUTTON_REPEAT:
 798             DrawBuf(); /* show buffer status */
 799             gPlay.nTimeOSD = FPS/2;
 800             gPlay.bDirtyOSD = true;
 801             break;
 802 #endif
 803         case VIDEO_CONTRAST_DOWN: /* contrast down */
 804         case VIDEO_CONTRAST_DOWN | BUTTON_REPEAT:
 805             if (gPlay.bHasVideo)
 806                 ChangeContrast(-1);
 807             break;
 808         case VIDEO_CONTRAST_UP: /* contrast up */
 809         case VIDEO_CONTRAST_UP | BUTTON_REPEAT:
 810             if (gPlay.bHasVideo)
 811                 ChangeContrast(1);
 812             break;
 813         default:
 814             if (rb->default_event_handler_ex(button, Cleanup, &fd)
 815                 == SYS_USB_CONNECTED)
 816                 retval = -1; /* signal "aborted" to caller */
 817             break;
 818         }
 819
 820         lastbutton = button;
 821     } /*  if (button != BUTTON_NONE) */
 822
 823
 824     /* handle seeking */
 825
 826     if (gPlay.bSeeking) /* seeking? */
 827     {
 828         if (gPlay.nSeekAcc < -MAX_ACC)
 829             gPlay.nSeekAcc = -MAX_ACC;
 830         else if (gPlay.nSeekAcc > MAX_ACC)
 831             gPlay.nSeekAcc = MAX_ACC;
 832
 833         gPlay.nSeekPos += gPlay.nSeekAcc * gBuf.nSeekChunk;
 834         if (gPlay.nSeekPos < 0)
 835             gPlay.nSeekPos = 0;
 836         if (gPlay.nSeekPos > rb->filesize(fd) - gBuf.granularity)
 837         {
 838             gPlay.nSeekPos = rb->filesize(fd);
 839             gPlay.nSeekPos -= gPlay.nSeekPos % gBuf.granularity;
 840         }
 841         DrawPosition(gPlay.nSeekPos, rb->filesize(fd));
 842     }
 843
 844
 845     /* check + recover underruns */
 846
 847     if ((gPlay.bAudioUnderrun || gPlay.bVideoUnderrun) && !gBuf.bEOF)
 848     {
 849         gBuf.spinup_safety += HZ/2; /* add extra spinup time for the future */
 850         filepos = rb->lseek(fd, 0, SEEK_CUR);
 851
 852         if (gPlay.bHasVideo && gPlay.bVideoUnderrun)
 853         {
 854             gStats.nVideoUnderruns++;
 855             filepos -= Available(gBuf.pReadVideo); /* take video position */
 856             SeekTo(fd, filepos);
 857         }
 858         else if (gPlay.bHasAudio && gPlay.bAudioUnderrun)
 859         {
 860             gStats.nAudioUnderruns++;
 861             filepos -= Available(gBuf.pReadAudio); /* else audio */
 862             SeekTo(fd, filepos);
 863         }
 864     }
 865
 866     return retval;
 867 }
 868
 869
 870 int main(char* filename)
 871 {
 872     int file_size;
 873     int fd; /* file descriptor handle */
 874     int read_now, got_now;
 875     int button = 0;
 876     int retval;
 877
 878     /* try to open the file */
 879     fd = rb->open(filename, O_RDWR);
 880     if (fd < 0)
 881         return PLUGIN_ERROR;
 882     file_size =  rb->filesize(fd);
 883
 884     /* reset pitch value to ensure synchronous playback */
 885     rb->sound_set_pitch(PITCH_SPEED_100);
 886
 887     /* init statistics */
 888     rb->memset(&gStats, 0, sizeof(gStats));
 889     gStats.minAudioAvail = gStats.minVideoAvail = INT_MAX;
 890     gStats.minSpinup = INT_MAX;
 891
 892     /* init playback state */
 893     rb->memset(&gPlay, 0, sizeof(gPlay));
 894
 895     /* init buffer */
 896     rb->memset(&gBuf, 0, sizeof(gBuf));
 897     gBuf.pBufStart = rb->plugin_get_audio_buffer((size_t *)&gBuf.bufsize);
 898     /*gBuf.bufsize = 1700*1024; // test, like 2MB version!!!! */
 899     gBuf.pBufFill = gBuf.pBufStart; /* all empty */
 900
 901     /* init OSD */
 902     rb->lcd_getstringsize("X", NULL, &retval);
 903     gBuf.osd_height = (retval + 7) & ~7;
 904     gBuf.osd_ypos = LCD_HEIGHT - gBuf.osd_height;
 905
 906     /* load file header */
 907     read_now = sizeof(gFileHdr);
 908     got_now = rb->read(fd, &gFileHdr, read_now);
 909     rb->lseek(fd, 0, SEEK_SET); /* rewind to restart sector-aligned */
 910     if (got_now != read_now)
 911     {
 912         rb->close(fd);
 913         return (PLUGIN_ERROR);
 914     }
 915
 916     /* check header */
 917     if (gFileHdr.magic != HEADER_MAGIC)
 918     {   /* old file, use default info */
 919         rb->memset(&gFileHdr, 0, sizeof(gFileHdr));
 920         gFileHdr.blocksize = SCREENSIZE;
 921         if (file_size < SCREENSIZE * FPS) /* less than a second */
 922             gFileHdr.flags |= FLAG_LOOP;
 923         gFileHdr.video_format = VIDEOFORMAT_RAW;
 924         gFileHdr.video_width = LCD_WIDTH;
 925         gFileHdr.video_height = LCD_HEIGHT;
 926         gFileHdr.video_frametime = 11059200 / FPS;
 927         gFileHdr.bps_peak = gFileHdr.bps_average = LCD_WIDTH * LCD_HEIGHT * FPS;
 928     }
 929
 930 #if FREQ == 12000000 /* Ondio speed kludge, 625 / 576 == 12000000 / 11059200 */
 931     gPlay.nFrameTimeAdjusted = (gFileHdr.video_frametime * 625) / 576;
 932 #endif
 933
 934     /* continue buffer init: align the end, calc low water, read sizes */
 935     gBuf.granularity = gFileHdr.blocksize;
 936     while (gBuf.granularity % 512) /* common multiple of sector size */
 937         gBuf.granularity *= 2;
 938     gBuf.bufsize -= gBuf.bufsize % gBuf.granularity; /* round down */
 939     gBuf.pBufEnd = gBuf.pBufStart + gBuf.bufsize;
 940     gBuf.low_water = SPINUP_INIT * gFileHdr.bps_peak / 8000;
 941     gBuf.spinup_safety = SPINUP_SAFETY * HZ / 1000; /* in time ticks */
 942     if (gFileHdr.audio_min_associated < 0)
 943         gBuf.high_water = 0 - gFileHdr.audio_min_associated;
 944     else
 945         gBuf.high_water = 1; /* never fill buffer completely, would appear empty */
 946     gBuf.nReadChunk = (CHUNK + gBuf.granularity - 1); /* round up */
 947     gBuf.nReadChunk -= gBuf.nReadChunk % gBuf.granularity;/* and align */
 948     gBuf.nSeekChunk = rb->filesize(fd) / FF_TICKS;
 949     gBuf.nSeekChunk += gBuf.granularity - 1; /* round up */
 950     gBuf.nSeekChunk -= gBuf.nSeekChunk % gBuf.granularity; /* and align */
 951
 952     /* prepare video playback, if contained */
 953     if (gFileHdr.video_format == VIDEOFORMAT_RAW)
 954     {
 955         gPlay.bHasVideo = true;
 956         /* Turn off backlight timeout */
 957         backlight_force_on(); /* backlight control in lib/helper.c */
 958     }
 959
 960     /* prepare audio playback, if contained */
 961     if (gFileHdr.audio_format == AUDIOFORMAT_MP3_BITSWAPPED)
 962     {
 963         gPlay.bHasAudio = true;
 964     }
 965
 966     /* start playback by seeking to zero or resume position */
 967     if (gFileHdr.resume_pos && WantResume(fd)) /* ask the user */
 968         SeekTo(fd, gFileHdr.resume_pos);
 969     else
 970         SeekTo(fd, 0);
 971
 972     /* all that's left to do is keep the buffer full */
 973     do /* the main loop */
 974     {
 975         retval = PlayTick(fd);
 976     } while (retval > 0);
 977
 978     if (retval < 0) /* aborted? */
 979     {
 980         return PLUGIN_USB_CONNECTED;
 981     }
 982
 983 #ifndef DEBUG /* for release compilations, only display the stats in case of error */
 984     if (gStats.nAudioUnderruns || gStats.nVideoUnderruns)
 985 #endif
 986     {
 987         /* display statistics */
 988         rb->lcd_clear_display();
 989         rb->snprintf(gPrint, sizeof(gPrint), "%d Audio Underruns", gStats.nAudioUnderruns);
 990         rb->lcd_puts(0, 0, gPrint);
 991         rb->snprintf(gPrint, sizeof(gPrint), "%d Video Underruns", gStats.nVideoUnderruns);
 992         rb->lcd_puts(0, 1, gPrint);
 993         rb->snprintf(gPrint, sizeof(gPrint), "%d MinAudio bytes", gStats.minAudioAvail);
 994         rb->lcd_puts(0, 2, gPrint);
 995         rb->snprintf(gPrint, sizeof(gPrint), "%d MinVideo bytes", gStats.minVideoAvail);
 996         rb->lcd_puts(0, 3, gPrint);
 997         rb->snprintf(gPrint, sizeof(gPrint), "MinSpinup %ld.%02ld", gStats.minSpinup/HZ, gStats.minSpinup%HZ);
 998         rb->lcd_puts(0, 4, gPrint);
 999         rb->snprintf(gPrint, sizeof(gPrint), "MaxSpinup %ld.%02ld", gStats.maxSpinup/HZ, gStats.maxSpinup%HZ);
1000         rb->lcd_puts(0, 5, gPrint);
1001         rb->snprintf(gPrint, sizeof(gPrint), "LowWater: %d", gBuf.low_water);
1002         rb->lcd_puts(0, 6, gPrint);
1003         rb->snprintf(gPrint, sizeof(gPrint), "HighWater: %d", gBuf.high_water);
1004         rb->lcd_puts(0, 7, gPrint);
1005
1006         rb->lcd_update();
1007         button = WaitForButton();
1008     }
1009     return (button == SYS_USB_CONNECTED) ? PLUGIN_USB_CONNECTED : PLUGIN_OK;
1010 }
1011
1012
1013 /***************** Plugin Entry Point *****************/
1014
1015 enum plugin_status plugin_start(const void* parameter)
1016 {
1017     if (parameter == NULL)
1018     {
1019         rb->splash(HZ*2, "Play .rvf file!");
1020         return PLUGIN_ERROR;
1021     }
1022
1023     /* now go ahead and have fun! */
1024     return main((char*) parameter);
1025 }
1026
1027 #endif /* #ifdef HAVE_LCD_BITMAP */
1028