/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Plugin for video playback * Reads raw image data + audio data from a file * !!!!!!!!!! Code Police free zone !!!!!!!!!! * * Copyright (C) 2003-2004 Jörg Hohensohn aka [IDC]Dragon * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ /****************** imports ******************/ #include "plugin.h" #include "sh7034.h" #include "system.h" #include "../apps/recorder/widgets.h" // not in search path, booh #ifndef SIMULATOR // not for simulator by now #ifdef HAVE_LCD_BITMAP // and definitely not for the Player, haha /****************** constants ******************/ #define IMIA4 (*((volatile unsigned long*)0x09000180)) // timer 4 #define INT_MAX ((int)(~(unsigned)0 >> 1)) #define INT_MIN (-INT_MAX-1) #define SCREENSIZE (LCD_WIDTH*LCD_HEIGHT/8) // in bytes #define FPS 68 // default fps for headerless (old video-only) file #define MAX_ACC 20 // maximum FF/FR speedup #define FF_TICKS 3000; // experimentally found nice // trigger levels, we need about 80 kB/sec #define PRECHARGE (1024 * 64) // the initial filling before starting to play #define SPINUP 3300 // from what level on to refill, in milliseconds #define CHUNK (1024*32) // read size /****************** prototypes ******************/ void timer_set(unsigned period); // setup ISR and timer registers void timer4_isr(void) __attribute__((interrupt_handler)); // IMIA4 ISR int check_button(void); // determine next relative frame /****************** data types ******************/ // plugins don't introduce headers, so structs are repeated from rvf_format.h #define HEADER_MAGIC 0x52564668 // "RVFh" at file start #define AUDIO_MAGIC 0x41756446 // "AudF" for each audio block #define FILEVERSION 100 // 1.00 #define CLOCK 11059200 // SH CPU clock // format type definitions #define VIDEOFORMAT_NO_VIDEO 0 #define VIDEOFORMAT_RAW 1 #define AUDIOFORMAT_NO_AUDIO 0 #define AUDIOFORMAT_MP3 1 #define AUDIOFORMAT_MP3_BITSWAPPED 2 // bit flags #define FLAG_LOOP 0x00000001 // loop the playback, e.g. for stills typedef struct // contains whatever might be useful to the player { // general info (16 entries = 64 byte) unsigned long magic; // HEADER_MAGIC unsigned long version; // file version unsigned long flags; // combination of FLAG_xx unsigned long blocksize; // how many bytes per block (=video frame) unsigned long bps_average; // bits per second of the whole stream unsigned long bps_peak; // max. of above (audio may be VBR) unsigned long resume_pos; // file position to resume to unsigned long reserved[9]; // reserved, should be zero // video info (16 entries = 64 byte) unsigned long video_format; // one of VIDEOFORMAT_xxx unsigned long video_1st_frame; // byte position of first video frame unsigned long video_duration; // total length of video part, in ms unsigned long video_payload_size; // total amount of video data, in bytes unsigned long video_bitrate; // derived from resolution and frame time, in bps unsigned long video_frametime; // frame interval in 11.0592 MHz clocks long video_preroll; // video is how much ahead, in 11.0592 MHz clocks unsigned long video_width; // in pixels unsigned long video_height; // in pixels unsigned long video_reserved[7]; // reserved, should be zero // audio info (16 entries = 64 byte) unsigned long audio_format; // one of AUDIOFORMAT_xxx unsigned long audio_1st_frame; // byte position of first video frame unsigned long audio_duration; // total length of audio part, in ms unsigned long audio_payload_size; // total amount of audio data, in bytes unsigned long audio_avg_bitrate; // average audio bitrate, in bits per second unsigned long audio_peak_bitrate; // maximum bitrate unsigned long audio_headersize; // offset to payload in audio frames long audio_min_associated; // minimum offset to video frame, in bytes long audio_max_associated; // maximum offset to video frame, in bytes unsigned long audio_reserved[7]; // reserved, should be zero // more to come... ? // Note: padding up to 'blocksize' with zero following this header } tFileHeader; typedef struct // the little header for all audio blocks { unsigned long magic; // AUDIO_MAGIC indicates an audio block unsigned char previous_block; // previous how many blocks backwards unsigned char next_block; // next how many blocks forward short associated_video; // offset to block with corresponding video unsigned short frame_start; // offset to first frame starting in this block unsigned short frame_end; // offset to behind last frame ending in this block } tAudioFrameHeader; /****************** globals ******************/ static struct plugin_api* rb; /* here is a global api struct pointer */ static char gPrint[32]; /* a global printf buffer, saves stack */ // playstate static struct { enum { paused, playing, } state; bool bAudioUnderrun; bool bVideoUnderrun; bool bHasAudio; bool bHasVideo; int nTimeOSD; // OSD should stay for this many frames bool bDirtyOSD; // OSD needs redraw bool bRefilling; // set if refilling buffer bool bSeeking; int nSeekAcc; // accelleration value for seek int nSeekPos; // current file position for seek } gPlay; // buffer information static struct { int bufsize; int granularity; // common multiple of block and sector size unsigned char* pBufStart; // start of ring buffer unsigned char* pBufEnd; // end of ring buffer unsigned char* pOSD; // OSD memory (112 bytes for 112*8 pixels) int vidcount; // how many video blocks are known in a row unsigned char* pBufFill; // write pointer for disk, owned by main task unsigned char* pReadVideo; // video readout, maintained by timer ISR unsigned char* pReadAudio; // audio readout, maintained by demand ISR bool bEOF; // flag for end of file int low_water; // reload threshold int high_water; // end of reload threshold int nReadChunk; // how much data for normal buffer fill int nSeekChunk; // how much data while seeking } gBuf; // statistics static struct { int minAudioAvail; int minVideoAvail; int nAudioUnderruns; int nVideoUnderruns; } gStats; tFileHeader gFileHdr; // file header /****************** implementation ******************/ // tool function: return how much playable audio/video is left int Available(unsigned char* pSnapshot) { if (pSnapshot <= gBuf.pBufFill) return gBuf.pBufFill - pSnapshot; else return gBuf.bufsize - (pSnapshot - gBuf.pBufFill); } // debug function to draw buffer indicators void DrawBuf(void) { int fill, video, audio; rb->memset(gBuf.pOSD, 0x10, LCD_WIDTH); // draw line gBuf.pOSD[0] = gBuf.pOSD[LCD_WIDTH-1] = 0xFE; // ends // calculate new tick positions fill = 1 + ((gBuf.pBufFill - gBuf.pBufStart) * (LCD_WIDTH-2)) / gBuf.bufsize; video = 1 + ((gBuf.pReadVideo - gBuf.pBufStart) * (LCD_WIDTH-2)) / gBuf.bufsize; audio = 1 + ((gBuf.pReadAudio - gBuf.pBufStart) * (LCD_WIDTH-2)) / gBuf.bufsize; gBuf.pOSD[fill] |= 0x20; // below the line, two pixels gBuf.pOSD[video] |= 0x08; // one above gBuf.pOSD[audio] |= 0x04; // two above if (gPlay.state == paused) // we have to draw ourselves rb->lcd_update_rect(0, LCD_HEIGHT-8, LCD_WIDTH, 8); else gPlay.bDirtyOSD = true; // redraw it with next timer IRQ } // helper function to draw a position indicator void DrawPosition(int pos, int total) { int w,h; int sec; // estimated seconds int percent; /* print the estimated position */ sec = pos / (gFileHdr.bps_average/8); if (sec < 100*60) /* fits into mm:ss format */ rb->snprintf(gPrint, sizeof(gPrint), "%02d:%02dm", sec/60, sec%60); else /* a very long clip, hh:mm format */ rb->snprintf(gPrint, sizeof(gPrint), "%02d:%02dh", sec/3600, (sec/60)%60); rb->lcd_puts(0, 7, gPrint); /* draw a slider over the rest of the line */ rb->lcd_getstringsize(gPrint, &w, &h); w++; percent = pos/(total/100); rb->slidebar(w, LCD_HEIGHT-7, LCD_WIDTH-w, 7, percent, Grow_Right); if (gPlay.state == paused) // we have to draw ourselves rb->lcd_update_rect(0, LCD_HEIGHT-8, LCD_WIDTH, 8); else // let the display time do it { gPlay.nTimeOSD = 70; gPlay.bDirtyOSD = true; // redraw it with next timer IRQ } } // helper function to change the volume by a certain amount, +/- void ChangeVolume(int delta) { int vol = rb->global_settings->volume + delta; if (vol > 100) vol = 100; else if (vol < 0) vol = 0; if (vol != rb->global_settings->volume) { rb->mpeg_sound_set(SOUND_VOLUME, vol); rb->global_settings->volume = vol; rb->snprintf(gPrint, sizeof(gPrint), "Vol: %d", vol); rb->lcd_puts(0, 7, gPrint); if (gPlay.state == paused) // we have to draw ourselves rb->lcd_update_rect(0, LCD_HEIGHT-8, LCD_WIDTH, 8); else // let the display time do it { gPlay.nTimeOSD = 50; // display it for 50 frames gPlay.bDirtyOSD = true; // let the refresh copy it to LCD } } } // sync the video to the current audio void SyncVideo(void) { tAudioFrameHeader* pAudioBuf; pAudioBuf = (tAudioFrameHeader*)(gBuf.pReadAudio); if (pAudioBuf->magic == AUDIO_MAGIC) { gBuf.vidcount = 0; // nothing known // sync the video position gBuf.pReadVideo = gBuf.pReadAudio + (long)pAudioBuf->associated_video * (long)gFileHdr.blocksize; // handle possible wrap if (gBuf.pReadVideo >= gBuf.pBufEnd) gBuf.pReadVideo -= gBuf.bufsize; else if (gBuf.pReadVideo < gBuf.pBufStart) gBuf.pReadVideo += gBuf.bufsize; } } // setup ISR and timer registers void timer_set(unsigned period) { if (period) { and_b(~0x10, &TSTR); // Stop the timer 4 and_b(~0x10, &TSNC); // No synchronization and_b(~0x10, &TMDR); // Operate normally IMIA4 = (unsigned long)timer4_isr; // install ISR TSR4 &= ~0x01; TIER4 = 0xF9; // Enable GRA match interrupt GRA4 = (unsigned short)(period/4 - 1); TCR4 = 0x22; // clear at GRA match, sysclock/4 IPRD = (IPRD & 0xFF0F) | 0x0010; // interrupt priority 1 (lowest) or_b(0x10, &TSTR); // start timer 4 } else { and_b(~0x10, &TSTR); // stop the timer 4 IPRD = (IPRD & 0xFF0F); // disable interrupt } } // timer interrupt handler to display a frame void timer4_isr(void) // IMIA4 { int available; tAudioFrameHeader* pAudioBuf; int height; // height to display TSR4 &= ~0x01; // clear the interrupt // xor_b(0x40, &PBDRL); // test: toggle LED (PB6) // debug code /* gPlay.nTimeOSD = 1; DrawBuf(); gPlay.bDirtyOSD = true; */ // reduce height if we have OSD on height = gFileHdr.video_height/8; if (gPlay.nTimeOSD > 0) { gPlay.nTimeOSD--; height = MIN(LCD_HEIGHT/8-1, height); // reserve bottom line if (gPlay.bDirtyOSD) { // OSD to bottom line rb->lcd_blit(gBuf.pOSD, 0, LCD_HEIGHT/8-1, LCD_WIDTH, 1, LCD_WIDTH); gPlay.bDirtyOSD = false; } } rb->lcd_blit(gBuf.pReadVideo, 0, 0, gFileHdr.video_width, height, gFileHdr.video_width); available = Available(gBuf.pReadVideo); // loop to skip audio frame(s) while(1) { // just for the statistics if (!gBuf.bEOF && available < gStats.minVideoAvail) gStats.minVideoAvail = available; if (available < (int)gFileHdr.blocksize) { // no data for next frame if (gBuf.bEOF && (gFileHdr.flags & FLAG_LOOP)) { // loop now, assuming the looped clip fits in memory gBuf.pReadVideo = gBuf.pBufStart + gFileHdr.video_1st_frame; } else { gPlay.bVideoUnderrun = true; timer_set(0); // disable ourselves return; // no data available } } gBuf.pReadVideo += gFileHdr.blocksize; if (gBuf.pReadVideo >= gBuf.pBufEnd) gBuf.pReadVideo -= gBuf.bufsize; // wraparound available -= gFileHdr.blocksize; if (!gPlay.bHasAudio) break; // no need to skip any audio if (gBuf.vidcount) { // we know the next is a video frame gBuf.vidcount--; break; // exit the loop } pAudioBuf = (tAudioFrameHeader*)(gBuf.pReadVideo); if (pAudioBuf->magic == AUDIO_MAGIC) { // we ran into audio, can happen after seek gBuf.vidcount = pAudioBuf->next_block; if (gBuf.vidcount) gBuf.vidcount--; // minus the audio block } } // while } // ISR function to get more mp3 data void GetMoreMp3(unsigned char** start, int* size) { int available; int advance; tAudioFrameHeader* pAudioBuf = (tAudioFrameHeader*)(gBuf.pReadAudio); advance = pAudioBuf->next_block * gFileHdr.blocksize; available = Available(gBuf.pReadAudio); // just for the statistics if (!gBuf.bEOF && available < gStats.minAudioAvail) gStats.minAudioAvail = available; if (available < advance || advance == 0) { gPlay.bAudioUnderrun = true; return; // no data available } gBuf.pReadAudio += advance; if (gBuf.pReadAudio >= gBuf.pBufEnd) gBuf.pReadAudio -= gBuf.bufsize; // wraparound *start = gBuf.pReadAudio + gFileHdr.audio_headersize; *size = gFileHdr.blocksize - gFileHdr.audio_headersize; } int WaitForButton(void) { int button; do { button = rb->button_get(true); } while ((button & BUTTON_REL) && button != SYS_USB_CONNECTED); return button; } bool WantResume(int fd) { int button; rb->lcd_puts(0, 0, "Resume to this"); rb->lcd_puts(0, 1, "last position?"); rb->lcd_puts(0, 2, "PLAY = yes"); rb->lcd_puts(0, 3, "Any Other = no"); rb->lcd_puts(0, 4, " (plays from start)"); DrawPosition(gFileHdr.resume_pos, rb->filesize(fd)); rb->lcd_update(); button = WaitForButton(); return (button == BUTTON_PLAY); } int SeekTo(int fd, int nPos) { int read_now, got_now; if (gPlay.bHasAudio) rb->mp3_play_stop(); // stop audio ISR if (gPlay.bHasVideo) timer_set(0); // stop the timer 4 rb->lseek(fd, nPos, SEEK_SET); gBuf.pBufFill = gBuf.pBufStart; // all empty gBuf.pReadVideo = gBuf.pReadAudio = gBuf.pBufStart; read_now = (PRECHARGE + gBuf.granularity - 1); // round up read_now -= read_now % gBuf.granularity; // to granularity got_now = rb->read(fd, gBuf.pBufFill, read_now); gBuf.bEOF = (read_now != got_now); gBuf.pBufFill += got_now; if (nPos == 0) { // we seeked to the start if (gPlay.bHasVideo) gBuf.pReadVideo += gFileHdr.video_1st_frame; if (gPlay.bHasAudio) gBuf.pReadAudio += gFileHdr.audio_1st_frame; } else { // we have to search for the positions if (gPlay.bHasAudio) // prepare audio playback, if contained { // search for audio frame while (((tAudioFrameHeader*)(gBuf.pReadAudio))->magic != AUDIO_MAGIC) gBuf.pReadAudio += gFileHdr.blocksize; if (gPlay.bHasVideo) SyncVideo(); // pick the right video for that } } // synchronous start gPlay.state = playing; if (gPlay.bHasAudio) { gPlay.bAudioUnderrun = false; rb->mp3_play_data(gBuf.pReadAudio + gFileHdr.audio_headersize, gFileHdr.blocksize - gFileHdr.audio_headersize, GetMoreMp3); rb->mp3_play_pause(true); // kickoff audio } if (gPlay.bHasVideo) { gPlay.bVideoUnderrun = false; timer_set(gFileHdr.video_frametime); // start display interrupt } return 0; } // returns >0 if continue, =0 to stop, <0 to abort (USB) int PlayTick(int fd) { int button; int avail_audio = -1, avail_video = -1; int retval = 1; int filepos; // check buffer level if (gPlay.bHasAudio) avail_audio = Available(gBuf.pReadAudio); if (gPlay.bHasVideo) avail_video = Available(gBuf.pReadVideo); if ((gPlay.bHasAudio && avail_audio < gBuf.low_water) || (gPlay.bHasVideo && avail_video < gBuf.low_water)) { gPlay.bRefilling = true; /* go to refill mode */ } if ((!gPlay.bHasAudio || gPlay.bAudioUnderrun) && (!gPlay.bHasVideo || gPlay.bVideoUnderrun) && gBuf.bEOF) { if (gFileHdr.resume_pos) { // we played til the end, clear resume position gFileHdr.resume_pos = 0; rb->lseek(fd, 0, SEEK_SET); // save resume position rb->write(fd, &gFileHdr, sizeof(gFileHdr)); } return 0; // all expired } if (!gPlay.bRefilling || gBuf.bEOF) { // nothing to do button = rb->button_get_w_tmo(HZ/10); } else { // refill buffer int read_now, got_now; int buf_free; // how much can we reload, don't fill completely, would appear empty buf_free = gBuf.bufsize - MAX(avail_audio, avail_video) - gBuf.high_water; if (buf_free < 0) buf_free = 0; // just for safety buf_free -= buf_free % gBuf.granularity; // round down to granularity // in one piece max. up to buffer end (wrap after that) read_now = MIN(buf_free, gBuf.pBufEnd - gBuf.pBufFill); // load piecewise, to stay responsive read_now = MIN(read_now, gBuf.nReadChunk); if (read_now == buf_free) gPlay.bRefilling = false; // last piece requested got_now = rb->read(fd, gBuf.pBufFill, read_now); if (got_now != read_now || read_now == 0) { gBuf.bEOF = true; gPlay.bRefilling = false; } if (!gPlay.bRefilling && rb->global_settings->disk_spindown < 20) // condition for test only { rb->ata_sleep(); // no point in leaving the disk run til timeout } gBuf.pBufFill += got_now; if (gBuf.pBufFill >= gBuf.pBufEnd) gBuf.pBufFill = gBuf.pBufStart; // wrap rb->yield(); // have mercy with the other threads button = rb->button_get(false); } // check keypresses if (button != BUTTON_NONE) { filepos = rb->lseek(fd, 0, SEEK_CUR); if (gPlay.bHasVideo) // video position is more accurate filepos -= Available(gBuf.pReadVideo); // take video position else filepos -= Available(gBuf.pReadAudio); // else audio switch (button) { // set exit conditions case BUTTON_OFF: if (gFileHdr.magic == HEADER_MAGIC // only if file has header && !(gFileHdr.flags & FLAG_LOOP)) // not for stills { gFileHdr.resume_pos = filepos; rb->lseek(fd, 0, SEEK_SET); // save resume position rb->write(fd, &gFileHdr, sizeof(gFileHdr)); } retval = 0; // signal "stop" to caller break; case SYS_USB_CONNECTED: retval = -1; // signal "abort" to caller break; case BUTTON_PLAY: if (gPlay.bSeeking) { gPlay.bSeeking = false; gPlay.state = playing; SeekTo(fd, gPlay.nSeekPos); } else if (gPlay.state == playing) { gPlay.state = paused; if (gPlay.bHasAudio) rb->mp3_play_pause(false); // pause audio if (gPlay.bHasVideo) and_b(~0x10, &TSTR); // stop the timer 4 } else if (gPlay.state == paused) { gPlay.state = playing; if (gPlay.bHasAudio) { if (gPlay.bHasVideo) SyncVideo(); rb->mp3_play_pause(true); // play audio } if (gPlay.bHasVideo) or_b(0x10, &TSTR); // start the video } break; case BUTTON_UP: case BUTTON_UP | BUTTON_REPEAT: if (gPlay.bHasAudio) ChangeVolume(1); break; case BUTTON_DOWN: case BUTTON_DOWN | BUTTON_REPEAT: if (gPlay.bHasAudio) ChangeVolume(-1); break; case BUTTON_LEFT: case BUTTON_LEFT | BUTTON_REPEAT: if (!gPlay.bSeeking) // prepare seek { gPlay.nSeekPos = filepos; gPlay.bSeeking = true; gPlay.nSeekAcc = 0; } else if (gPlay.nSeekAcc > 0) // other direction, stop sliding gPlay.nSeekAcc = 0; else gPlay.nSeekAcc--; break; case BUTTON_RIGHT: case BUTTON_RIGHT | BUTTON_REPEAT: if (!gPlay.bSeeking) // prepare seek { gPlay.nSeekPos = filepos; gPlay.bSeeking = true; gPlay.nSeekAcc = 0; } else if (gPlay.nSeekAcc < 0) // other direction, stop sliding gPlay.nSeekAcc = 0; else gPlay.nSeekAcc++; break; case BUTTON_F1: // debug key case BUTTON_F1 | BUTTON_REPEAT: DrawBuf(); // show buffer status gPlay.nTimeOSD = 30; gPlay.bDirtyOSD = true; break; } } /* if (button != BUTTON_NONE) */ // handle seeking if (gPlay.bSeeking) // seeking? { if (gPlay.nSeekAcc < -MAX_ACC) gPlay.nSeekAcc = -MAX_ACC; else if (gPlay.nSeekAcc > MAX_ACC) gPlay.nSeekAcc = MAX_ACC; gPlay.nSeekPos += gPlay.nSeekAcc * gBuf.nSeekChunk; if (gPlay.nSeekPos < 0) gPlay.nSeekPos = 0; if (gPlay.nSeekPos > rb->filesize(fd) - gBuf.granularity) { gPlay.nSeekPos = rb->filesize(fd); gPlay.nSeekPos -= gPlay.nSeekPos % gBuf.granularity; } DrawPosition(gPlay.nSeekPos, rb->filesize(fd)); } // check + recover underruns if ((gPlay.bAudioUnderrun || gPlay.bVideoUnderrun) && !gBuf.bEOF) { filepos = rb->lseek(fd, 0, SEEK_CUR); if (gPlay.bHasVideo && gPlay.bVideoUnderrun) { gStats.nVideoUnderruns++; filepos -= Available(gBuf.pReadVideo); // take video position SeekTo(fd, filepos); } else if (gPlay.bHasAudio && gPlay.bAudioUnderrun) { gStats.nAudioUnderruns++; filepos -= Available(gBuf.pReadAudio); // else audio SeekTo(fd, filepos); } } return retval; } int main(char* filename) { int file_size; int fd; /* file descriptor handle */ int read_now, got_now; int button = 0; int retval; // try to open the file fd = rb->open(filename, O_RDWR); if (fd < 0) return PLUGIN_ERROR; file_size = rb->filesize(fd); // init statistics rb->memset(&gStats, 0, sizeof(gStats)); gStats.minAudioAvail = gStats.minVideoAvail = INT_MAX; // init playback state rb->memset(&gPlay, 0, sizeof(gPlay)); // init buffer rb->memset(&gBuf, 0, sizeof(gBuf)); gBuf.pOSD = rb->lcd_framebuffer + LCD_WIDTH*7; // last screen line gBuf.pBufStart = rb->plugin_get_mp3_buffer(&gBuf.bufsize); //gBuf.bufsize = 1700*1024; // test, like 2MB version!!!! gBuf.pBufFill = gBuf.pBufStart; // all empty // load file header read_now = sizeof(gFileHdr); got_now = rb->read(fd, &gFileHdr, read_now); rb->lseek(fd, 0, SEEK_SET); // rewind to restart sector-aligned if (got_now != read_now) { rb->close(fd); return (PLUGIN_ERROR); } // check header if (gFileHdr.magic != HEADER_MAGIC) { // old file, use default info rb->memset(&gFileHdr, 0, sizeof(gFileHdr)); gFileHdr.blocksize = SCREENSIZE; if (file_size < SCREENSIZE * FPS) // less than a second gFileHdr.flags |= FLAG_LOOP; gFileHdr.video_format = VIDEOFORMAT_RAW; gFileHdr.video_width = LCD_WIDTH; gFileHdr.video_height = LCD_HEIGHT; gFileHdr.video_frametime = CLOCK / FPS; gFileHdr.bps_peak = gFileHdr.bps_average = LCD_WIDTH * LCD_HEIGHT * FPS; } // continue buffer init: align the end, calc low water, read sizes gBuf.granularity = gFileHdr.blocksize; while (gBuf.granularity % 512) // common multiple of sector size gBuf.granularity *= 2; gBuf.bufsize -= gBuf.bufsize % gBuf.granularity; // round down gBuf.pBufEnd = gBuf.pBufStart + gBuf.bufsize; gBuf.low_water = SPINUP * gFileHdr.bps_peak / 8000; if (gFileHdr.audio_min_associated < 0) gBuf.high_water = 0 - gFileHdr.audio_min_associated; else gBuf.high_water = 1; // never fill buffer completely, would appear empty gBuf.nReadChunk = (CHUNK + gBuf.granularity - 1); // round up gBuf.nReadChunk -= gBuf.nReadChunk % gBuf.granularity;// and align gBuf.nSeekChunk = rb->filesize(fd) / FF_TICKS; gBuf.nSeekChunk += gBuf.granularity - 1; // round up gBuf.nSeekChunk -= gBuf.nSeekChunk % gBuf.granularity; // and align // prepare video playback, if contained if (gFileHdr.video_format == VIDEOFORMAT_RAW) { gPlay.bHasVideo = true; if (rb->global_settings->backlight_timeout > 0) rb->backlight_set_timeout(1); // keep the light on } // prepare audio playback, if contained if (gFileHdr.audio_format == AUDIOFORMAT_MP3_BITSWAPPED) { gPlay.bHasAudio = true; } // start playback by seeking to zero or resume position if (gFileHdr.resume_pos && WantResume(fd)) // ask the user SeekTo(fd, gFileHdr.resume_pos); else SeekTo(fd, 0); // all that's left to do is keep the buffer full do // the main loop { retval = PlayTick(fd); } while (retval > 0); rb->close(fd); // close the file if (gPlay.bHasVideo) timer_set(0); // stop video ISR, now I can use the display again if (gPlay.bHasAudio) rb->mp3_play_stop(); // stop audio ISR // restore normal backlight setting rb->backlight_set_timeout(rb->global_settings->backlight_timeout); if (retval < 0) // aborted? { return PLUGIN_USB_CONNECTED; } #ifndef DEBUG // for release compilations, only display the stats in case of error if (gStats.nAudioUnderruns || gStats.nVideoUnderruns) #endif { // display statistics rb->lcd_clear_display(); rb->snprintf(gPrint, sizeof(gPrint), "%d Audio Underruns", gStats.nAudioUnderruns); rb->lcd_puts(0, 0, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "%d Video Underruns", gStats.nVideoUnderruns); rb->lcd_puts(0, 1, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "%d MinAudio bytes", gStats.minAudioAvail); rb->lcd_puts(0, 2, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "%d MinVideo bytes", gStats.minVideoAvail); rb->lcd_puts(0, 3, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "ReadChunk: %d", gBuf.nReadChunk); rb->lcd_puts(0, 4, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "SeekChunk: %d", gBuf.nSeekChunk); rb->lcd_puts(0, 5, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "LowWater: %d", gBuf.low_water); rb->lcd_puts(0, 6, gPrint); rb->snprintf(gPrint, sizeof(gPrint), "HighWater: %d", gBuf.high_water); rb->lcd_puts(0, 7, gPrint); rb->lcd_update(); button = WaitForButton(); } return (button == SYS_USB_CONNECTED) ? PLUGIN_USB_CONNECTED : PLUGIN_OK; } /***************** Plugin Entry Point *****************/ enum plugin_status plugin_start(struct plugin_api* api, void* parameter) { int ret; /* this macro should be called as the first thing you do in the plugin. it test that the api version and model the plugin was compiled for matches the machine it is running on */ TEST_PLUGIN_API(api); rb = api; // copy to global api pointer if (parameter == NULL) { rb->splash(HZ*2, true, "Play .rvf file!"); return PLUGIN_ERROR; } // now go ahead and have fun! ret = main((char*) parameter); if (ret==PLUGIN_USB_CONNECTED) rb->usb_screen(); return ret; } #endif // #ifdef HAVE_LCD_BITMAP #endif // #ifndef SIMULATOR