/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2005 Miika Pekkarinen * * 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. * ****************************************************************************/ #include #include #include #include #include "system.h" #include "thread.h" #include "file.h" #include "lcd.h" #include "font.h" #include "backlight.h" #include "button.h" #include "kernel.h" #include "tree.h" #include "debug.h" #include "sprintf.h" #include "settings.h" #include "codecs.h" #include "wps.h" #include "wps-display.h" #include "audio.h" #include "logf.h" #include "mp3_playback.h" #include "usb.h" #include "status.h" #include "main_menu.h" #include "ata.h" #include "screens.h" #include "playlist.h" #include "playback.h" #include "pcm_playback.h" #include "buffer.h" #include "dsp.h" #ifdef HAVE_LCD_BITMAP #include "icons.h" #include "peakmeter.h" #include "action.h" #endif #include "lang.h" #include "bookmark.h" #include "misc.h" #include "sound.h" #include "metadata.h" static volatile bool codec_loaded; static volatile bool playing; static volatile bool paused; #define CODEC_VORBIS "/.rockbox/codecs/vorbis.codec"; #define CODEC_MPA_L3 "/.rockbox/codecs/mpa.codec"; #define CODEC_FLAC "/.rockbox/codecs/flac.codec"; #define CODEC_WAV "/.rockbox/codecs/wav.codec"; #define CODEC_A52 "/.rockbox/codecs/a52.codec"; #define CODEC_MPC "/.rockbox/codecs/mpc.codec"; #define CODEC_WAVPACK "/.rockbox/codecs/wavpack.codec"; #define AUDIO_FILL_CYCLE (1024*256) #define AUDIO_DEFAULT_WATERMARK (1024*512) #define AUDIO_DEFAULT_FILECHUNK (1024*32) #define AUDIO_PLAY 1 #define AUDIO_STOP 2 #define AUDIO_PAUSE 3 #define AUDIO_RESUME 4 #define AUDIO_NEXT 5 #define AUDIO_PREV 6 #define AUDIO_FF_REWIND 7 #define AUDIO_FLUSH_RELOAD 8 #define AUDIO_CODEC_DONE 9 #define AUDIO_FLUSH 10 #define AUDIO_TRACK_CHANGED 11 #define CODEC_LOAD 1 #define CODEC_LOAD_DISK 2 /* As defined in plugins/lib/xxx2wav.h */ #define MALLOC_BUFSIZE (512*1024) #define GUARD_BUFSIZE (8*1024) /* TODO: Handle playlist_peek in mpeg.c Track changing */ extern bool audio_is_initialized; /* Buffer control thread. */ static struct event_queue audio_queue; static long audio_stack[(DEFAULT_STACK_SIZE + 0x1000)/sizeof(long)]; static const char audio_thread_name[] = "audio"; /* Codec thread. */ static struct event_queue codec_queue; static long codec_stack[(DEFAULT_STACK_SIZE + 0x2500)/sizeof(long)] IDATA_ATTR; static const char codec_thread_name[] = "codec"; static struct mutex mutex_bufferfill; /* Is file buffer currently being refilled? */ static volatile bool filling; /* Ring buffer where tracks and codecs are loaded. */ static char *codecbuf; /* Total size of the ring buffer. */ int codecbuflen; /* Bytes available in the buffer. */ int codecbufused; /* Ring buffer read and write indexes. */ static volatile int buf_ridx; static volatile int buf_widx; static int last_peek_offset; /* Track information (count in file buffer, read/write indexes for track ring structure. */ int track_count; static volatile int track_ridx; static volatile int track_widx; static bool track_changed; /* Partially loaded song's file handle to continue buffering later. */ static int current_fd; /* Information about how many bytes left on the buffer re-fill run. */ static long fill_bytesleft; /* Track info structure about songs in the file buffer. */ static struct track_info tracks[MAX_TRACK]; /* Pointer to track info structure about current song playing. */ static struct track_info *cur_ti; /* Codec API including function callbacks. */ extern struct codec_api ci; /* When we change a song and buffer is not in filling state, this variable keeps information about whether to go a next/previous track. */ static int new_track; /* Callback function to call when current track has really changed. */ void (*track_changed_callback)(struct track_info *ti); void (*track_buffer_callback)(struct mp3entry *id3, bool last_track); void (*track_unbuffer_callback)(struct mp3entry *id3, bool last_track); /* Configuration */ static int conf_bufferlimit; static int conf_watermark; static int conf_filechunk; static bool v1first = false; static void mp3_set_elapsed(struct mp3entry* id3); int mp3_get_file_pos(void); /* Simulator stubs. */ #ifdef SIMULATOR bool pcm_insert_buffer(char *buf, long length) { (void)buf; (void)length; return true; } void pcm_flush_buffer(long length) { (void)length; } void* pcm_request_buffer(long length, long *realsize) { (void)length; (void)realsize; return NULL; } void audiobuffer_add_event(void (*event_handler)(void)) { (void)event_handler; } unsigned int audiobuffer_get_latency() { return 0; } void pcm_play_stop(void) { } bool pcm_is_playing(void) { return false; } bool pcm_is_crossfade_active(void) { return false; } bool pcm_is_lowdata(void) { return false; } void pcm_flush_audio(void) { } bool pcm_crossfade_init(void) { return false; } void pcm_set_boost_mode(bool state) { (void)state; } bool pcm_is_crossfade_enabled(void) { return false; } void pcm_play_pause(bool state) { (void)state; } int ata_sleep(void) { return 0; } #endif bool codec_audiobuffer_insert_callback(char *buf, long length) { char *dest; long realsize; int factor; int next_channel = 0; int processed_length; int mono = 0; /* If non-interleaved stereo mode. */ if (dsp_config.stereo_mode == STEREO_NONINTERLEAVED) next_channel = length / 2; else if (dsp_config.stereo_mode == STEREO_MONO) { length *= 2; mono = 1; } if (dsp_config.sample_depth > 16) { length /= 2; factor = 1; } else { factor = 0; } while (length > 0) { /* Request a few extra bytes for resampling. */ /* FIXME: Required extra bytes SHOULD be calculated. */ while ((dest = pcm_request_buffer(length+16384, &realsize)) == NULL) yield(); if (realsize < 16384) { pcm_flush_buffer(0); continue ; } realsize -= 16384; if (next_channel) { processed_length = dsp_process(dest, buf, realsize / 4) * 2; dsp_process(dest, buf + next_channel, realsize / 4); } else { processed_length = dsp_process(dest, buf, realsize >> (mono + 1)); } pcm_flush_buffer(processed_length); length -= realsize; buf += realsize << (factor + mono); } return true; } bool codec_audiobuffer_insert_split_callback(void *ch1, void *ch2, long length) { char *dest; long realsize; int factor; int processed_length; /* non-interleaved stereo mode. */ if (dsp_config.sample_depth > 16) { factor = 0; } else { length /= 2; factor = 1; } while (length > 0) { /* Request a few extra bytes for resampling. */ while ((dest = pcm_request_buffer(length+4096, &realsize)) == NULL) yield(); if (realsize < 4096) { pcm_flush_buffer(0); continue ; } realsize -= 4096; processed_length = dsp_process(dest, ch1, realsize / 4) * 2; dsp_process(dest, ch2, realsize / 4); pcm_flush_buffer(processed_length); length -= realsize; ch1 += realsize >> factor; ch2 += realsize >> factor; } return true; } void* get_codec_memory_callback(long *size) { *size = MALLOC_BUFSIZE; return &audiobuf[0]; } void codec_set_elapsed_callback(unsigned int value) { unsigned int latency; if (ci.stop_codec) return ; latency = audiobuffer_get_latency(); if (value < latency) { cur_ti->id3.elapsed = 0; } else if (value - latency > cur_ti->id3.elapsed || value - latency < cur_ti->id3.elapsed - 2) { cur_ti->id3.elapsed = value - latency; } } long codec_filebuf_callback(void *ptr, long size) { char *buf = (char *)ptr; int copy_n; int part_n; if (ci.stop_codec || !playing) return 0; copy_n = MIN((off_t)size, (off_t)cur_ti->available + cur_ti->filerem); while (copy_n > cur_ti->available) { yield(); if (ci.stop_codec) return 0; } if (copy_n == 0) return 0; part_n = MIN(copy_n, codecbuflen - buf_ridx); memcpy(buf, &codecbuf[buf_ridx], part_n); if (part_n < copy_n) { memcpy(&buf[part_n], &codecbuf[0], copy_n - part_n); } buf_ridx += copy_n; if (buf_ridx >= codecbuflen) buf_ridx -= codecbuflen; ci.curpos += copy_n; cur_ti->available -= copy_n; codecbufused -= copy_n; return copy_n; } void* codec_request_buffer_callback(long *realsize, long reqsize) { long part_n; if (ci.stop_codec || !playing) { *realsize = 0; return NULL; } *realsize = MIN((off_t)reqsize, (off_t)cur_ti->available + cur_ti->filerem); if (*realsize == 0) { return NULL; } while ((int)*realsize > cur_ti->available) { yield(); if (ci.stop_codec) { *realsize = 0; return NULL; } } part_n = MIN((int)*realsize, codecbuflen - buf_ridx); if (part_n < *realsize) { part_n += GUARD_BUFSIZE; if (part_n < *realsize) *realsize = part_n; memcpy(&codecbuf[codecbuflen], &codecbuf[0], *realsize - (codecbuflen - buf_ridx)); } return (char *)&codecbuf[buf_ridx]; } static bool rebuffer_and_seek(int newpos) { int fd; logf("Re-buffering song"); mutex_lock(&mutex_bufferfill); /* (Re-)open current track's file handle. */ fd = open(playlist_peek(0), O_RDONLY); if (fd < 0) { logf("Open failed!"); mutex_unlock(&mutex_bufferfill); return false; } if (current_fd >= 0) close(current_fd); current_fd = fd; /* Clear codec buffer. */ audio_invalidate_tracks(); codecbufused = 0; buf_ridx = buf_widx = 0; cur_ti->filerem = cur_ti->filesize - newpos; cur_ti->filepos = newpos; cur_ti->start_pos = newpos; ci.curpos = newpos; cur_ti->available = 0; lseek(current_fd, newpos, SEEK_SET); pcm_flush_audio(); mutex_unlock(&mutex_bufferfill); while (cur_ti->available == 0 && cur_ti->filerem > 0) { yield(); if (ci.stop_codec) return false; } return true; } void codec_advance_buffer_callback(long amount) { if (amount > cur_ti->available + cur_ti->filerem) amount = cur_ti->available + cur_ti->filerem; if (amount > cur_ti->available) { if (!rebuffer_and_seek(ci.curpos + amount)) ci.stop_codec = true; return ; } buf_ridx += amount; if (buf_ridx >= codecbuflen) buf_ridx -= codecbuflen; cur_ti->available -= amount; codecbufused -= amount; ci.curpos += amount; cur_ti->id3.offset = ci.curpos; } void codec_advance_buffer_loc_callback(void *ptr) { long amount; amount = (int)ptr - (int)&codecbuf[buf_ridx]; codec_advance_buffer_callback(amount); } off_t codec_mp3_get_filepos_callback(int newtime) { off_t newpos; cur_ti->id3.elapsed = newtime; newpos = mp3_get_file_pos(); return newpos; } bool codec_seek_buffer_callback(off_t newpos) { int difference; if (newpos < 0) newpos = 0; if (newpos >= cur_ti->filesize) newpos = cur_ti->filesize - 1; difference = newpos - ci.curpos; /* Seeking forward */ if (difference >= 0) { logf("seek: +%d", difference); codec_advance_buffer_callback(difference); if (!pcm_is_crossfade_active()) pcm_play_stop(); return true; } /* Seeking backward */ difference = -difference; if (ci.curpos - difference < 0) difference = ci.curpos; /* We need to reload the song. */ if (newpos < cur_ti->start_pos) return rebuffer_and_seek(newpos); /* Seeking inside buffer space. */ logf("seek: -%d", difference); codecbufused += difference; cur_ti->available += difference; buf_ridx -= difference; if (buf_ridx < 0) buf_ridx = codecbuflen + buf_ridx; ci.curpos -= difference; if (!pcm_is_crossfade_active()) pcm_play_stop(); return true; } void codec_configure_callback(int setting, void *value) { switch (setting) { case CODEC_SET_FILEBUF_WATERMARK: conf_watermark = (unsigned int)value; break; case CODEC_SET_FILEBUF_CHUNKSIZE: conf_filechunk = (unsigned int)value; break; case CODEC_SET_FILEBUF_LIMIT: conf_bufferlimit = (unsigned int)value; break; case CODEC_DSP_ENABLE: if ((bool)value) ci.audiobuffer_insert = codec_audiobuffer_insert_callback; else ci.audiobuffer_insert = pcm_insert_buffer; break ; default: if (!dsp_configure(setting, value)) { logf("Illegal key: %d", setting); } } } void audio_set_track_buffer_event(void (*handler)(struct mp3entry *id3, bool last_track)) { track_buffer_callback = handler; } void audio_set_track_unbuffer_event(void (*handler)(struct mp3entry *id3, bool last_track)) { track_unbuffer_callback = handler; } void audio_set_track_changed_event(void (*handler)(struct track_info *ti)) { track_changed_callback = handler; } void codec_track_changed(void) { track_changed = true; queue_post(&audio_queue, AUDIO_TRACK_CHANGED, 0); } /* Give codecs or file buffering the right amount of processing time to prevent pcm audio buffer from going empty. */ void yield_codecs(void) { yield(); if (!pcm_is_playing()) sleep(5); while ((pcm_is_crossfade_active() || pcm_is_lowdata()) && !ci.stop_codec && playing && queue_empty(&audio_queue) && codecbufused > (128*1024)) yield(); } void audio_fill_file_buffer(void) { long i, size; int rc; if (current_fd < 0) return ; /* Throw away buffered codec. */ if (tracks[track_widx].start_pos != 0) tracks[track_widx].codecsize = 0; i = 0; size = MIN(tracks[track_widx].filerem, AUDIO_FILL_CYCLE); while (i < size) { /* Give codecs some processing time. */ yield_codecs(); if (fill_bytesleft == 0) break ; rc = MIN(conf_filechunk, codecbuflen - buf_widx); rc = MIN(rc, (off_t)fill_bytesleft); rc = read(current_fd, &codecbuf[buf_widx], rc); if (rc <= 0) { tracks[track_widx].filerem = 0; break ; } buf_widx += rc; if (buf_widx >= codecbuflen) buf_widx -= codecbuflen; i += rc; tracks[track_widx].available += rc; tracks[track_widx].filerem -= rc; tracks[track_widx].filepos += rc; codecbufused += rc; fill_bytesleft -= rc; } /*logf("Filled:%d/%d", tracks[track_widx].available, tracks[track_widx].filerem);*/ } bool loadcodec(const char *trackname, bool start_play) { char msgbuf[80]; off_t size; int filetype; int fd; int i, rc; const char *codec_path; int copy_n; int prev_track; filetype = probe_file_format(trackname); switch (filetype) { case AFMT_OGG_VORBIS: logf("Codec: Vorbis"); codec_path = CODEC_VORBIS; break; case AFMT_MPA_L1: case AFMT_MPA_L2: case AFMT_MPA_L3: logf("Codec: MPA L1/L2/L3"); codec_path = CODEC_MPA_L3; break; case AFMT_PCM_WAV: logf("Codec: PCM WAV"); codec_path = CODEC_WAV; break; case AFMT_FLAC: logf("Codec: FLAC"); codec_path = CODEC_FLAC; break; case AFMT_A52: logf("Codec: A52"); codec_path = CODEC_A52; break; case AFMT_MPC: logf("Codec: Musepack"); codec_path = CODEC_MPC; break; case AFMT_WAVPACK: logf("Codec: WAVPACK"); codec_path = CODEC_WAVPACK; break; default: logf("Codec: Unsupported"); snprintf(msgbuf, sizeof(msgbuf)-1, "No codec for: %s", trackname); splash(HZ*2, true, msgbuf); codec_path = NULL; } tracks[track_widx].id3.codectype = filetype; tracks[track_widx].codecsize = 0; if (codec_path == NULL) return false; if (!start_play) { prev_track = track_widx - 1; if (prev_track < 0) prev_track = MAX_TRACK-1; if (track_count > 0 && filetype == tracks[prev_track].id3.codectype) { logf("Reusing prev. codec"); return true; } } else { /* Load the codec directly from disk and save some memory. */ cur_ti = &tracks[track_widx]; ci.filesize = cur_ti->filesize; ci.id3 = (struct mp3entry *)&cur_ti->id3; ci.taginfo_ready = (bool *)&cur_ti->taginfo_ready; ci.curpos = 0; playing = true; logf("Starting codec"); queue_post(&codec_queue, CODEC_LOAD_DISK, (void *)codec_path); return true; } fd = open(codec_path, O_RDONLY); if (fd < 0) { logf("Codec doesn't exist!"); snprintf(msgbuf, sizeof(msgbuf)-1, "Couldn't load codec: %s", codec_path); splash(HZ*2, true, msgbuf); return false; } size = filesize(fd); if ((off_t)fill_bytesleft < size + conf_watermark) { logf("Not enough space"); fill_bytesleft = 0; close(fd); return false; } i = 0; while (i < size) { yield_codecs(); copy_n = MIN(conf_filechunk, codecbuflen - buf_widx); rc = read(fd, &codecbuf[buf_widx], copy_n); if (rc < 0) return false; buf_widx += rc; if (buf_widx >= codecbuflen) buf_widx -= codecbuflen; i += rc; } close(fd); logf("Done: %dB", i); codecbufused += size; fill_bytesleft -= size; tracks[track_widx].codecsize = size; return true; } bool read_next_metadata(void) { int fd; char *trackname; int next_track; int status; trackname = playlist_peek(last_peek_offset); if (!trackname) return false; fd = open(trackname, O_RDONLY); if (fd < 0) return false; next_track = track_ridx + 1; if (next_track >= MAX_TRACK) next_track -= MAX_TRACK; /* Start buffer refilling also because we need to spin-up the disk. */ filling = true; status = get_metadata(&tracks[next_track],fd,trackname,v1first); track_changed = true; close(fd); return status; } bool audio_load_track(int offset, bool start_play, int peek_offset) { char *trackname; int fd; off_t size; int rc, i; int copy_n; /* Stop buffer filling if there is no free track entries. */ if (track_count >= MAX_TRACK) { fill_bytesleft = 0; return false; } /* Don't start loading track if the current write position already contains a BUFFERED track. The entry may contain the metadata which is ok. */ if (tracks[track_widx].filesize != 0) return false; /* Get track name from current playlist read position. */ logf("Buffering track:%d/%d", track_widx, track_ridx); trackname = playlist_peek(peek_offset); if (!trackname) { logf("End-of-playlist"); conf_watermark = 0; return false; } fd = open(trackname, O_RDONLY); if (fd < 0) { logf("Open failed"); return false; } /* Initialize track entry. */ size = filesize(fd); tracks[track_widx].filerem = size; tracks[track_widx].filesize = size; tracks[track_widx].filepos = 0; tracks[track_widx].available = 0; tracks[track_widx].taginfo_ready = false; tracks[track_widx].playlist_offset = offset; if (buf_widx >= codecbuflen) buf_widx -= codecbuflen; /* Set default values */ if (start_play) { conf_bufferlimit = 0; conf_watermark = AUDIO_DEFAULT_WATERMARK; conf_filechunk = AUDIO_DEFAULT_FILECHUNK; dsp_configure(DSP_RESET, 0); ci.configure(CODEC_DSP_ENABLE, false); } /* Load the codec. */ tracks[track_widx].codecbuf = &codecbuf[buf_widx]; if (!loadcodec(trackname, start_play)) { close(fd); /* Stop buffer filling if codec load failed. */ fill_bytesleft = 0; return false; } // tracks[track_widx].filebuf = &codecbuf[buf_widx]; tracks[track_widx].start_pos = 0; /* Get track metadata if we don't already have it. */ if (!tracks[track_widx].taginfo_ready) { if (!get_metadata(&tracks[track_widx],fd,trackname,v1first)) { close(fd); return false; } } tracks[track_widx].id3.elapsed = 0; /* Starting playback from an offset is only support in MPA at the moment */ if (offset > 0) { switch (tracks[track_widx].id3.codectype) { case AFMT_MPA_L2: case AFMT_MPA_L3: lseek(fd, offset, SEEK_SET); tracks[track_widx].id3.offset = offset; mp3_set_elapsed(&tracks[track_widx].id3); tracks[track_widx].filepos = offset; tracks[track_widx].filerem = tracks[track_widx].filesize - offset; ci.curpos = offset; tracks[track_widx].start_pos = offset; break; case AFMT_WAVPACK: lseek(fd, offset, SEEK_SET); tracks[track_widx].id3.offset = offset; tracks[track_widx].id3.elapsed = tracks[track_widx].id3.length / 2; tracks[track_widx].filepos = offset; tracks[track_widx].filerem = tracks[track_widx].filesize - offset; ci.curpos = offset; tracks[track_widx].start_pos = offset; break; } } if (start_play) { track_count++; audiobuffer_add_event(codec_track_changed); } /* Do some initial file buffering. */ i = tracks[track_widx].start_pos; size = MIN(size, AUDIO_FILL_CYCLE); while (i < size) { /* Give codecs some processing time to prevent glitches. */ yield_codecs(); if (fill_bytesleft == 0) break ; copy_n = MIN(conf_filechunk, codecbuflen - buf_widx); copy_n = MIN(size - i, copy_n); copy_n = MIN((int)fill_bytesleft, copy_n); rc = read(fd, &codecbuf[buf_widx], copy_n); if (rc <= 0) { logf("File error!"); close(fd); return false; } buf_widx += rc; if (buf_widx >= codecbuflen) buf_widx -= codecbuflen; i += rc; tracks[track_widx].available += rc; tracks[track_widx].filerem -= rc; codecbufused += rc; fill_bytesleft -= rc; } if (!start_play) track_count++; tracks[track_widx].filepos = i; if (current_fd >= 0) { close(current_fd); current_fd = -1; } /* Leave the file handle open for faster buffer refill. */ if (tracks[track_widx].filerem != 0) { current_fd = fd; logf("Partially buf:%d", tracks[track_widx].available); } else { logf("Completely buf."); close(fd); if (++track_widx >= MAX_TRACK) { track_widx = 0; } tracks[track_widx].filerem = 0; } return true; } void audio_play_start(int offset) { if (current_fd >= 0) { close(current_fd); current_fd = -1; } memset(&tracks, 0, sizeof(struct track_info) * MAX_TRACK); sound_set(SOUND_VOLUME, global_settings.volume); track_count = 0; track_widx = 0; track_ridx = 0; buf_ridx = 0; buf_widx = 0; codecbufused = 0; pcm_set_boost_mode(true); fill_bytesleft = codecbuflen; filling = true; last_peek_offset = 0; if (audio_load_track(offset, true, 0)) { last_peek_offset++; if (track_buffer_callback) { cur_ti->event_sent = true; track_buffer_callback(&cur_ti->id3, true); } ata_sleep(); } else { logf("Failure"); } pcm_set_boost_mode(false); } void audio_clear_track_entries(void) { int cur_idx, event_count; int i; cur_idx = track_widx; event_count = 0; for (i = 0; i < MAX_TRACK - track_count; i++) { if (++cur_idx >= MAX_TRACK) cur_idx = 0; if (tracks[cur_idx].event_sent) event_count++; if (!track_unbuffer_callback) memset(&tracks[cur_idx], 0, sizeof(struct track_info)); } if (!track_unbuffer_callback) return ; cur_idx = track_widx; for (i = 0; i < MAX_TRACK - track_count; i++) { if (++cur_idx >= MAX_TRACK) cur_idx = 0; /* Send an event to notify that track has finished. */ if (tracks[cur_idx].event_sent) { tracks[cur_idx].event_sent = true; event_count--; track_unbuffer_callback(&tracks[cur_idx].id3, event_count == 0); } memset(&tracks[cur_idx], 0, sizeof(struct track_info)); } } /* Send callback events to notify about new tracks. */ static void generate_postbuffer_events(void) { int i; int cur_ridx, event_count; if (!track_buffer_callback) return ; /* At first determine how many unsent events we have. */ cur_ridx = track_ridx; event_count = 0; for (i = 0; i < track_count; i++) { if (!tracks[cur_ridx].event_sent) event_count++; if (++cur_ridx >= MAX_TRACK) cur_ridx -= MAX_TRACK; } /* Now sent these events. */ cur_ridx = track_ridx; for (i = 0; i < track_count; i++) { if (!tracks[cur_ridx].event_sent) { tracks[cur_ridx].event_sent = true; event_count--; track_buffer_callback(&tracks[cur_ridx].id3, event_count == 0); } if (++cur_ridx >= MAX_TRACK) cur_ridx -= MAX_TRACK; } } void initialize_buffer_fill(void) { int cur_idx, i; fill_bytesleft = codecbuflen - codecbufused; cur_ti->start_pos = ci.curpos; if (filling) return ; filling = true; pcm_set_boost_mode(true); /* Calculate real track count after throwing away old tracks. */ cur_idx = track_ridx; for (i = 0; i < track_count; i++) { if (cur_idx == track_widx) break ; if (++cur_idx >= MAX_TRACK) cur_idx = 0; } track_count = i; if (tracks[track_widx].filesize != 0) track_count++; /* Mark all other entries null. */ audio_clear_track_entries(); } void audio_check_buffer(void) { /* Start buffer filling as necessary. */ if ((codecbufused > conf_watermark || !queue_empty(&audio_queue) || !playing || ci.stop_codec || ci.reload_codec) && !filling) return ; initialize_buffer_fill(); /* Limit buffering size at first run. */ if (conf_bufferlimit && (int)fill_bytesleft >= conf_bufferlimit) { fill_bytesleft = conf_bufferlimit - codecbufused; } /* Try to load remainings of the file. */ if (tracks[track_widx].filerem > 0) audio_fill_file_buffer(); /* Increase track write index as necessary. */ if (tracks[track_widx].filerem == 0 && tracks[track_widx].filesize != 0) { if (++track_widx == MAX_TRACK) track_widx = 0; } /* Load new files to fill the entire buffer. */ if (audio_load_track(0, false, last_peek_offset)) { last_peek_offset++; } else if (tracks[track_widx].filerem == 0 || fill_bytesleft == 0) { if (track_count <= 1) read_next_metadata(); generate_postbuffer_events(); filling = false; conf_bufferlimit = 0; pcm_set_boost_mode(false); if (playing) ata_sleep(); } } void audio_update_trackinfo(void) { if (new_track >= 0) { buf_ridx += cur_ti->available; codecbufused -= cur_ti->available; cur_ti = &tracks[track_ridx]; buf_ridx += cur_ti->codecsize; codecbufused -= cur_ti->codecsize; if (buf_ridx >= codecbuflen) buf_ridx -= codecbuflen; if (!filling) pcm_set_boost_mode(false); } else { buf_ridx -= ci.curpos + cur_ti->codecsize; codecbufused += ci.curpos + cur_ti->codecsize; cur_ti->available = cur_ti->filesize; cur_ti = &tracks[track_ridx]; buf_ridx -= cur_ti->filesize; codecbufused += cur_ti->filesize; cur_ti->available = cur_ti->filesize; if (buf_ridx < 0) buf_ridx = codecbuflen + buf_ridx; } ci.filesize = cur_ti->filesize; cur_ti->id3.elapsed = 0; cur_ti->id3.offset = 0; ci.id3 = (struct mp3entry *)&cur_ti->id3; ci.curpos = 0; cur_ti->start_pos = 0; ci.taginfo_ready = (bool *)&cur_ti->taginfo_ready; if (!pcm_crossfade_init()) audiobuffer_add_event(codec_track_changed); else codec_track_changed(); } static void audio_stop_playback(void) { paused = false; playing = false; ci.stop_codec = true; if (current_fd >= 0) { close(current_fd); current_fd = -1; } pcm_play_stop(); pcm_play_pause(true); track_count = 0; audio_clear_track_entries(); filling = false; } /* Request the next track with new codec. */ void audio_change_track(void) { logf("change track"); /* Wait for new track data. */ while (track_count <= 1 && filling) yield(); /* If we are not filling, then it must be end-of-playlist. */ if (track_count <= 1) { logf("No more tracks"); while (pcm_is_playing()) yield(); audio_stop_playback(); return ; } if (++track_ridx >= MAX_TRACK) track_ridx = 0; audio_update_trackinfo(); queue_post(&codec_queue, CODEC_LOAD, 0); } bool codec_request_next_track_callback(void) { if (ci.stop_codec || !playing || !queue_empty(&audio_queue)) return false; logf("Request new track"); /* Advance to next track. */ if (ci.reload_codec && new_track > 0) { if (!playlist_check(1)) return false; last_peek_offset--; playlist_next(1); if (++track_ridx == MAX_TRACK) track_ridx = 0; /* Wait for new track data (codectype 0 is invalid). When a correct codectype is set, we can assume that the filesize is correct. */ while (tracks[track_ridx].id3.codectype == 0 && filling && !ci.stop_codec) yield(); if (tracks[track_ridx].filesize == 0) { logf("Loading from disk..."); new_track = 0; queue_post(&audio_queue, AUDIO_PLAY, 0); return false; } } /* Advance to previous track. */ else if (ci.reload_codec && new_track < 0) { if (!playlist_check(-1)) return false; last_peek_offset++; playlist_next(-1); if (--track_ridx < 0) track_ridx = MAX_TRACK-1; if (tracks[track_ridx].filesize == 0 || codecbufused+ci.curpos+tracks[track_ridx].filesize /*+ (off_t)tracks[track_ridx].codecsize*/ > codecbuflen) { logf("Loading from disk..."); new_track = 0; queue_post(&audio_queue, AUDIO_PLAY, 0); return false; } } /* Codec requested track change (next track). */ else { if (!playlist_check(1)) return false; last_peek_offset--; playlist_next(1); if (++track_ridx >= MAX_TRACK) track_ridx = 0; /* Wait for new track data (codectype 0 is invalid). When a correct codectype is set, we can assume that the filesize is correct. */ while (tracks[track_ridx].id3.codectype == 0 && filling && !ci.stop_codec) yield(); if (tracks[track_ridx].filesize == 0) { logf("No more tracks"); new_track = 0; return false; } } ci.reload_codec = false; if (cur_ti->id3.codectype != tracks[track_ridx].id3.codectype) { if (--track_ridx < 0) track_ridx = MAX_TRACK-1; logf("New codec"); new_track = 0; return false; } logf("On-the-fly change"); audio_update_trackinfo(); new_track = 0; return true; } /* Invalidates all but currently playing track. */ void audio_invalidate_tracks(void) { if (track_count == 0) { queue_post(&audio_queue, AUDIO_PLAY, 0); return ; } track_count = 1; last_peek_offset = 1; track_widx = track_ridx; audio_clear_track_entries(); codecbufused = cur_ti->available; buf_widx = buf_ridx + cur_ti->available; if (buf_widx >= codecbuflen) buf_widx -= codecbuflen; read_next_metadata(); } static void initiate_track_change(int peek_index) { if (!playlist_check(peek_index)) return ; new_track = peek_index; ci.reload_codec = true; /* Detect if disk is spinning.. */ if (filling) { ci.stop_codec = true; playlist_next(peek_index); queue_post(&audio_queue, AUDIO_PLAY, 0); } else if (!pcm_crossfade_init()) pcm_flush_audio(); else codec_track_changed(); } void audio_thread(void) { struct event ev; while (1) { yield_codecs(); mutex_lock(&mutex_bufferfill); audio_check_buffer(); mutex_unlock(&mutex_bufferfill); queue_wait_w_tmo(&audio_queue, &ev, 0); switch (ev.id) { case AUDIO_PLAY: logf("starting..."); playing = true; ci.stop_codec = true; ci.reload_codec = false; ci.seek_time = 0; pcm_crossfade_init(); audio_play_start((int)ev.data); playlist_update_resume_info(audio_current_track()); break ; case AUDIO_STOP: if (playing) playlist_update_resume_info(audio_current_track()); audio_stop_playback(); break ; case AUDIO_PAUSE: logf("audio_pause"); pcm_play_pause(false); paused = true; break ; case AUDIO_RESUME: logf("audio_resume"); pcm_play_pause(true); paused = false; break ; case AUDIO_NEXT: logf("audio_next"); initiate_track_change(1); break ; case AUDIO_PREV: logf("audio_prev"); initiate_track_change(-1); break; case AUDIO_FLUSH: audio_invalidate_tracks(); break ; case AUDIO_TRACK_CHANGED: if (track_changed_callback) track_changed_callback(cur_ti); playlist_update_resume_info(audio_current_track()); break ; case AUDIO_CODEC_DONE: //if (playing) // audio_change_track(); break ; #ifndef SIMULATOR case SYS_USB_CONNECTED: logf("USB Connection"); audio_stop_playback(); usb_acknowledge(SYS_USB_CONNECTED_ACK); usb_wait_for_disconnect(&audio_queue); break ; #endif case SYS_TIMEOUT: if (playing) playlist_update_resume_info(audio_current_track()); break; } } } void codec_thread(void) { struct event ev; long codecsize; int status; int wrap; while (1) { status = 0; queue_wait(&codec_queue, &ev); switch (ev.id) { case CODEC_LOAD_DISK: ci.stop_codec = false; codec_loaded = true; status = codec_load_file((char *)ev.data); break ; case CODEC_LOAD: logf("Codec start"); codecsize = cur_ti->codecsize; if (codecsize == 0) { logf("Codec slot is empty!"); audio_stop_playback(); break ; } ci.stop_codec = false; wrap = (int)&codecbuf[codecbuflen] - (int)cur_ti->codecbuf; codec_loaded = true; status = codec_load_ram(cur_ti->codecbuf, codecsize, &codecbuf[0], wrap); break ; #ifndef SIMULATOR case SYS_USB_CONNECTED: usb_acknowledge(SYS_USB_CONNECTED_ACK); usb_wait_for_disconnect(&codec_queue); break ; #endif } codec_loaded = false; switch (ev.id) { case CODEC_LOAD_DISK: case CODEC_LOAD: if (status != CODEC_OK) { logf("Codec failure"); splash(HZ*2, true, "Codec failure"); audio_stop_playback(); } else { logf("Codec finished"); } if (playing && !ci.stop_codec && !ci.reload_codec) { audio_change_track(); continue ; } else if (ci.stop_codec) { //playing = false; } //queue_post(&audio_queue, AUDIO_CODEC_DONE, (void *)status); } } } struct mp3entry* audio_current_track(void) { // logf("audio_current_track"); if (track_count > 0 && cur_ti->taginfo_ready) return (struct mp3entry *)&cur_ti->id3; else return NULL; } struct mp3entry* audio_next_track(void) { int next_idx = track_ridx + 1; if (track_count == 0) return NULL; if (next_idx >= MAX_TRACK) next_idx = 0; if (!tracks[next_idx].taginfo_ready) return NULL; //logf("audio_next_track"); return &tracks[next_idx].id3; } bool audio_has_changed_track(void) { if (track_changed && track_count > 0 && playing) { if (!cur_ti->taginfo_ready) return false; track_changed = false; return true; } return false; } void audio_play(int offset) { logf("audio_play"); ci.stop_codec = true; if (!pcm_crossfade_init()) pcm_flush_audio(); else codec_track_changed(); pcm_play_pause(true); paused = false; queue_post(&audio_queue, AUDIO_PLAY, (void *)offset); } void audio_stop(void) { logf("audio_stop"); queue_post(&audio_queue, AUDIO_STOP, 0); while (playing || codec_loaded) yield(); } void audio_pause(void) { queue_post(&audio_queue, AUDIO_PAUSE, 0); } void audio_resume(void) { queue_post(&audio_queue, AUDIO_RESUME, 0); } void audio_next(void) { queue_post(&audio_queue, AUDIO_NEXT, 0); } void audio_prev(void) { queue_post(&audio_queue, AUDIO_PREV, 0); } void audio_ff_rewind(int newpos) { int counter; logf("rewind: %d", newpos); /* Keep playback paused until seek is complete. */ if (playing) { ci.seek_time = newpos+1; counter = 30; pcm_flush_audio(); while (ci.seek_time) { sleep(10); if (counter-- == 0) break ; } pcm_play_stop(); } } void audio_flush_and_reload_tracks(void) { logf("flush & reload"); queue_post(&audio_queue, AUDIO_FLUSH, 0); } void audio_error_clear(void) { } int audio_status(void) { int ret = 0; if (playing) ret |= AUDIO_STATUS_PLAY; if (paused) ret |= AUDIO_STATUS_PAUSE; return ret; } int audio_get_file_pos(void) { return 0; } /* Copied from mpeg.c. Should be moved somewhere else. */ static void mp3_set_elapsed(struct mp3entry* id3) { if ( id3->vbr ) { if ( id3->has_toc ) { /* calculate elapsed time using TOC */ int i; unsigned int remainder, plen, relpos, nextpos; /* find wich percent we're at */ for (i=0; i<100; i++ ) { if ( id3->offset < (int)(id3->toc[i] * (id3->filesize / 256)) ) { break; } } i--; if (i < 0) i = 0; relpos = id3->toc[i]; if (i < 99) { nextpos = id3->toc[i+1]; } else { nextpos = 256; } remainder = id3->offset - (relpos * (id3->filesize / 256)); /* set time for this percent (divide before multiply to prevent overflow on long files. loss of precision is negligible on short files) */ id3->elapsed = i * (id3->length / 100); /* calculate remainder time */ plen = (nextpos - relpos) * (id3->filesize / 256); id3->elapsed += (((remainder * 100) / plen) * (id3->length / 10000)); } else { /* no TOC exists. set a rough estimate using average bitrate */ int tpk = id3->length / (id3->filesize / 1024); id3->elapsed = id3->offset / 1024 * tpk; } } else /* constant bitrate == simple frame calculation */ id3->elapsed = id3->offset / id3->bpf * id3->tpf; } /* Copied from mpeg.c. Should be moved somewhere else. */ int mp3_get_file_pos(void) { int pos = -1; struct mp3entry *id3 = audio_current_track(); if (id3->vbr) { if (id3->has_toc) { /* Use the TOC to find the new position */ unsigned int percent, remainder; int curtoc, nexttoc, plen; percent = (id3->elapsed*100)/id3->length; if (percent > 99) percent = 99; curtoc = id3->toc[percent]; if (percent < 99) nexttoc = id3->toc[percent+1]; else nexttoc = 256; pos = (id3->filesize/256)*curtoc; /* Use the remainder to get a more accurate position */ remainder = (id3->elapsed*100)%id3->length; remainder = (remainder*100)/id3->length; plen = (nexttoc - curtoc)*(id3->filesize/256); pos += (plen/100)*remainder; } else { /* No TOC exists, estimate the new position */ pos = (id3->filesize / (id3->length / 1000)) * (id3->elapsed / 1000); } } else if (id3->bpf && id3->tpf) pos = (id3->elapsed/id3->tpf)*id3->bpf; else { return -1; } if (pos >= (int)(id3->filesize - id3->id3v1len)) { /* Don't seek right to the end of the file so that we can transition properly to the next song */ pos = id3->filesize - id3->id3v1len - 1; } else if (pos < (int)id3->first_frame_offset) { /* skip past id3v2 tag and other leading garbage */ pos = id3->first_frame_offset; } return pos; } #ifndef SIMULATOR void audio_set_buffer_margin(int seconds) { (void)seconds; logf("bufmargin: %d", seconds); } #endif void mpeg_id3_options(bool _v1first) { v1first = _v1first; } void test_buffer_event(struct mp3entry *id3, bool last_track) { (void)id3; (void)last_track; logf("be:%d%s", last_track, id3->title); } void test_unbuffer_event(struct mp3entry *id3, bool last_track) { (void)id3; (void)last_track; logf("ube:%d%s", last_track, id3->title); } void audio_init(void) { logf("audio api init"); codecbuflen = audiobufend - audiobuf - PCMBUF_SIZE - PCMBUF_GUARD - MALLOC_BUFSIZE - GUARD_BUFSIZE; //codecbuflen = 2*512*1024; codecbufused = 0; filling = false; codecbuf = &audiobuf[MALLOC_BUFSIZE]; playing = false; codec_loaded = false; paused = false; track_changed = false; current_fd = -1; track_buffer_callback = NULL; track_unbuffer_callback = NULL; track_changed_callback = NULL; /* Just to prevent cur_ti never be anything random. */ cur_ti = &tracks[0]; logf("abuf:%0x", PCMBUF_SIZE); logf("fbuf:%0x", codecbuflen); logf("mbuf:%0x", MALLOC_BUFSIZE); audio_set_track_buffer_event(test_buffer_event); audio_set_track_unbuffer_event(test_unbuffer_event); /* Initialize codec api. */ ci.read_filebuf = codec_filebuf_callback; ci.audiobuffer_insert = pcm_insert_buffer; ci.audiobuffer_insert_split = codec_audiobuffer_insert_split_callback; ci.get_codec_memory = get_codec_memory_callback; ci.request_buffer = codec_request_buffer_callback; ci.advance_buffer = codec_advance_buffer_callback; ci.advance_buffer_loc = codec_advance_buffer_loc_callback; ci.request_next_track = codec_request_next_track_callback; ci.mp3_get_filepos = codec_mp3_get_filepos_callback; ci.seek_buffer = codec_seek_buffer_callback; ci.set_elapsed = codec_set_elapsed_callback; ci.configure = codec_configure_callback; mutex_init(&mutex_bufferfill); queue_init(&audio_queue); queue_init(&codec_queue); create_thread(codec_thread, codec_stack, sizeof(codec_stack), codec_thread_name); create_thread(audio_thread, audio_stack, sizeof(audio_stack), audio_thread_name); #ifndef SIMULATOR audio_is_initialized = true; #endif }