/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Code that has been in mpeg.c before, now creating an encapsulated play * data module, to be used by other sources than file playback as well. * * Copyright (C) 2004 by Linus Nielsen Feltzing * * 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 "config.h" #include "debug.h" #include "panic.h" #include #include "mpeg.h" /* ToDo: remove crosslinks */ #include "mp3_playback.h" #ifndef SIMULATOR #include "i2c.h" #include "mas.h" #include "dac.h" #include "system.h" #include "hwcompat.h" #endif /* hacking into mpeg.c, recording is still there */ #ifdef HAVE_MAS3587F enum { MPEG_DECODER, MPEG_ENCODER } mpeg_mode; unsigned long shadow_7f1; #endif /* #ifdef HAVE_MAS3587F */ /**** globals ****/ /* own version, independent of mpeg.c */ static bool paused; /* playback is paused */ static bool playing; /* We are playing an MP3 stream */ #ifndef SIMULATOR /* for measuring the play time */ static long playstart_tick; static long cumulative_ticks; /* the registered callback function to ask for more mp3 data */ static void (*callback_for_more)(unsigned char**, int*); #endif /* #ifndef SIMULATOR */ static char *units[] = { "%", /* Volume */ "dB", /* Bass */ "dB", /* Treble */ "%", /* Balance */ "dB", /* Loudness */ "%", /* Bass boost */ "", /* AVC */ "", /* Channels */ "dB", /* Left gain */ "dB", /* Right gain */ "dB", /* Mic gain */ }; static int numdecimals[] = { 0, /* Volume */ 0, /* Bass */ 0, /* Treble */ 0, /* Balance */ 0, /* Loudness */ 0, /* Bass boost */ 0, /* AVC */ 0, /* Channels */ 1, /* Left gain */ 1, /* Right gain */ 1, /* Mic gain */ }; static int minval[] = { 0, /* Volume */ 0, /* Bass */ 0, /* Treble */ -50, /* Balance */ 0, /* Loudness */ 0, /* Bass boost */ -1, /* AVC */ 0, /* Channels */ 0, /* Left gain */ 0, /* Right gain */ 0, /* Mic gain */ }; static int maxval[] = { 100, /* Volume */ #ifdef HAVE_MAS3587F 24, /* Bass */ 24, /* Treble */ #else 30, /* Bass */ 30, /* Treble */ #endif 50, /* Balance */ 17, /* Loudness */ 10, /* Bass boost */ 3, /* AVC */ 6, /* Channels */ 15, /* Left gain */ 15, /* Right gain */ 15, /* Mic gain */ }; static int defaultval[] = { 70, /* Volume */ #ifdef HAVE_MAS3587F 12+6, /* Bass */ 12+6, /* Treble */ #else 15+7, /* Bass */ 15+7, /* Treble */ #endif 0, /* Balance */ 0, /* Loudness */ 0, /* Bass boost */ 0, /* AVC */ 0, /* Channels */ 8, /* Left gain */ 8, /* Right gain */ 2, /* Mic gain */ }; char *mpeg_sound_unit(int setting) { return units[setting]; } int mpeg_sound_numdecimals(int setting) { return numdecimals[setting]; } int mpeg_sound_min(int setting) { return minval[setting]; } int mpeg_sound_max(int setting) { return maxval[setting]; } int mpeg_sound_default(int setting) { return defaultval[setting]; } /* list of tracks in memory */ #define MAX_ID3_TAGS (1<<4) /* Must be power of 2 */ #define MAX_ID3_TAGS_MASK (MAX_ID3_TAGS - 1) #ifndef SIMULATOR static bool mpeg_is_initialized = false; #endif #ifndef SIMULATOR unsigned long mas_version_code; #ifdef HAVE_MAS3507D static unsigned int bass_table[] = { 0x9e400, /* -15dB */ 0xa2800, /* -14dB */ 0xa7400, /* -13dB */ 0xac400, /* -12dB */ 0xb1800, /* -11dB */ 0xb7400, /* -10dB */ 0xbd400, /* -9dB */ 0xc3c00, /* -8dB */ 0xca400, /* -7dB */ 0xd1800, /* -6dB */ 0xd8c00, /* -5dB */ 0xe0400, /* -4dB */ 0xe8000, /* -3dB */ 0xefc00, /* -2dB */ 0xf7c00, /* -1dB */ 0, 0x800, /* 1dB */ 0x10000, /* 2dB */ 0x17c00, /* 3dB */ 0x1f800, /* 4dB */ 0x27000, /* 5dB */ 0x2e400, /* 6dB */ 0x35800, /* 7dB */ 0x3c000, /* 8dB */ 0x42800, /* 9dB */ 0x48800, /* 10dB */ 0x4e400, /* 11dB */ 0x53800, /* 12dB */ 0x58800, /* 13dB */ 0x5d400, /* 14dB */ 0x61800 /* 15dB */ }; static unsigned int treble_table[] = { 0xb2c00, /* -15dB */ 0xbb400, /* -14dB */ 0xc1800, /* -13dB */ 0xc6c00, /* -12dB */ 0xcbc00, /* -11dB */ 0xd0400, /* -10dB */ 0xd5000, /* -9dB */ 0xd9800, /* -8dB */ 0xde000, /* -7dB */ 0xe2800, /* -6dB */ 0xe7e00, /* -5dB */ 0xec000, /* -4dB */ 0xf0c00, /* -3dB */ 0xf5c00, /* -2dB */ 0xfac00, /* -1dB */ 0, 0x5400, /* 1dB */ 0xac00, /* 2dB */ 0x10400, /* 3dB */ 0x16000, /* 4dB */ 0x1c000, /* 5dB */ 0x22400, /* 6dB */ 0x28400, /* 7dB */ 0x2ec00, /* 8dB */ 0x35400, /* 9dB */ 0x3c000, /* 10dB */ 0x42c00, /* 11dB */ 0x49c00, /* 12dB */ 0x51800, /* 13dB */ 0x58400, /* 14dB */ 0x5f800 /* 15dB */ }; static unsigned int prescale_table[] = { 0x80000, /* 0db */ 0x8e000, /* 1dB */ 0x9a400, /* 2dB */ 0xa5800, /* 3dB */ 0xaf400, /* 4dB */ 0xb8000, /* 5dB */ 0xbfc00, /* 6dB */ 0xc6c00, /* 7dB */ 0xcd000, /* 8dB */ 0xd25c0, /* 9dB */ 0xd7800, /* 10dB */ 0xdc000, /* 11dB */ 0xdfc00, /* 12dB */ 0xe3400, /* 13dB */ 0xe6800, /* 14dB */ 0xe9400 /* 15dB */ }; #endif bool dma_on; /* The DMA is active */ #ifdef HAVE_MAS3507D static void mas_poll_start(int interval_in_ms) { unsigned int count; count = (FREQ * interval_in_ms) / 1000 / 8; if(count > 0xffff) { panicf("Error! The MAS poll interval is too long (%d ms)\n", interval_in_ms); return; } /* We are using timer 1 */ TSTR &= ~0x02; /* Stop the timer */ TSNC &= ~0x02; /* No synchronization */ TMDR &= ~0x02; /* Operate normally */ TCNT1 = 0; /* Start counting at 0 */ GRA1 = count; TCR1 = 0x23; /* Clear at GRA match, sysclock/8 */ /* Enable interrupt on level 5 */ IPRC = (IPRC & ~0x000f) | 0x0005; TSR1 &= ~0x02; TIER1 = 0xf9; /* Enable GRA match interrupt */ TSTR |= 0x02; /* Start timer 1 */ } #else static void postpone_dma_tick(void) { unsigned int count; count = FREQ / 2000 / 8; /* We are using timer 1 */ TSTR &= ~0x02; /* Stop the timer */ TSNC &= ~0x02; /* No synchronization */ TMDR &= ~0x02; /* Operate normally */ TCNT1 = 0; /* Start counting at 0 */ GRA1 = count; TCR1 = 0x23; /* Clear at GRA match, sysclock/8 */ /* Enable interrupt on level 5 */ IPRC = (IPRC & ~0x000f) | 0x0005; TSR1 &= ~0x02; TIER1 = 0xf9; /* Enable GRA match interrupt */ TSTR |= 0x02; /* Start timer 1 */ } #endif #ifdef HAVE_MAS3587F void demand_irq_enable(bool on) { int oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL); if(on) { IPRA = (IPRA & 0xfff0) | 0x000b; ICR &= ~0x0010; /* IRQ3 level sensitive */ } else IPRA &= 0xfff0; set_irq_level(oldlevel); } #endif /* #ifdef HAVE_MAS3587F */ void play_tick(void) { if(playing && !paused) { /* Start DMA if it is disabled and the DEMAND pin is high */ if(!(SCR0 & 0x80) && (PBDR & 0x4000)) { SCR0 |= 0x80; } playback_tick(); /* dirty call to mpeg.c */ } } #pragma interrupt void DEI3(void) { unsigned char* start; int size = 0; if (callback_for_more != NULL) { callback_for_more(&start, &size); } if (size > 0) { DTCR3 = size & 0xffff; SAR3 = (unsigned int) start; } else { CHCR3 &= ~0x0001; /* Disable the DMA interrupt */ } CHCR3 &= ~0x0002; /* Clear DMA interrupt */ } #pragma interrupt void IMIA1(void) /* Timer 1 interrupt */ { if(playing) play_tick(); TSR1 &= ~0x01; #ifdef HAVE_MAS3587F /* Disable interrupt */ IPRC &= ~0x000f; #endif /* #ifdef HAVE_MAS3587F */ } #pragma interrupt void IRQ6(void) /* PB14: MAS stop demand IRQ */ { SCR0 &= ~0x80; } #ifdef HAVE_MAS3587F #pragma interrupt void IRQ3(void) /* PA15: MAS demand IRQ */ { /* Begin with setting the IRQ to edge sensitive */ ICR |= 0x0010; if(mpeg_mode == MPEG_ENCODER) rec_tick(); else postpone_dma_tick(); } #endif /* #ifdef HAVE_MAS3587F */ static void setup_sci0(void) { /* PB15 is I/O, PB14 is IRQ6, PB12 is SCK0, PB9 is TxD0 */ PBCR1 = (PBCR1 & 0x0cff) | 0x1208; /* Set PB12 to output */ or_b(0x10, &PBIORH); /* Disable serial port */ SCR0 = 0x00; /* Synchronous, no prescale */ SMR0 = 0x80; /* Set baudrate 1Mbit/s */ BRR0 = 0x03; /* use SCK as serial clock output */ SCR0 = 0x01; /* Clear FER and PER */ SSR0 &= 0xe7; /* Set interrupt ITU2 and SCI0 priority to 0 */ IPRD &= 0x0ff0; /* set PB15 and PB14 to inputs */ and_b(~0x80, &PBIORH); and_b(~0x40, &PBIORH); /* Enable End of DMA interrupt at prio 8 */ IPRC = (IPRC & 0xf0ff) | 0x0800; /* Enable Tx (only!) */ SCR0 |= 0x20; } #endif /* SIMULATOR */ #ifdef HAVE_MAS3587F static void init_playback(void) { unsigned long val; int rc; mp3_play_pause(false); mas_reset(); /* Enable the audio CODEC and the DSP core, max analog voltage range */ rc = mas_direct_config_write(MAS_CONTROL, 0x8c00); if(rc < 0) panicf("mas_ctrl_w: %d", rc); /* Stop the current application */ val = 0; mas_writemem(MAS_BANK_D0,0x7f6,&val,1); do { mas_readmem(MAS_BANK_D0, 0x7f7, &val, 1); } while(val); /* Enable the D/A Converter */ mas_codec_writereg(0x0, 0x0001); /* ADC scale 0%, DSP scale 100% */ mas_codec_writereg(6, 0x0000); mas_codec_writereg(7, 0x4000); /* Disable SDO and SDI */ val = 0x0d; mas_writemem(MAS_BANK_D0,0x7f2,&val,1); /* Set Demand mode and validate all settings */ val = 0x25; mas_writemem(MAS_BANK_D0,0x7f1,&val,1); /* Start the Layer2/3 decoder applications */ val = 0x0c; mas_writemem(MAS_BANK_D0,0x7f6,&val,1); do { mas_readmem(MAS_BANK_D0, 0x7f7, &val, 1); } while((val & 0x0c) != 0x0c); mpeg_sound_channel_config(MPEG_SOUND_STEREO); mpeg_mode = MPEG_DECODER; /* set IRQ6 to edge detect */ ICR |= 0x02; /* set IRQ6 prio 8 */ IPRB = ( IPRB & 0xff0f ) | 0x0080; DEBUGF("MAS Decoding application started\n"); } #endif /* #ifdef HAVE_MAS3587F */ #ifndef SIMULATOR #ifdef HAVE_MAS3507D int current_left_volume = 0; /* all values in tenth of dB */ int current_right_volume = 0; /* all values in tenth of dB */ int current_treble = 0; int current_bass = 0; int current_balance = 0; /* convert tenth of dB volume to register value */ static int tenthdb2reg(int db) { if (db < -540) return (db + 780) / 30; else return (db + 660) / 15; } void set_prescaled_volume(void) { int prescale; int l, r; prescale = MAX(current_bass, current_treble); if (prescale < 0) prescale = 0; /* no need to prescale if we don't boost bass or treble */ mas_writereg(MAS_REG_KPRESCALE, prescale_table[prescale/10]); /* gain up the analog volume to compensate the prescale reduction gain */ l = current_left_volume + prescale; r = current_right_volume + prescale; dac_volume(tenthdb2reg(l), tenthdb2reg(r), false); } #endif /* HAVE_MAS3507D */ #endif /* !SIMULATOR */ void mpeg_sound_set(int setting, int value) { #ifdef SIMULATOR setting = value; #else #ifdef HAVE_MAS3507D int l, r; #else int tmp; #endif if(!mpeg_is_initialized) return; switch(setting) { case SOUND_VOLUME: #ifdef HAVE_MAS3587F tmp = 0x7f00 * value / 100; mas_codec_writereg(0x10, tmp & 0xff00); #else l = value; r = value; if(current_balance > 0) { l -= current_balance; if(l < 0) l = 0; } if(current_balance < 0) { r += current_balance; if(r < 0) r = 0; } l = 0x38 * l / 100; r = 0x38 * r / 100; /* store volume in tenth of dB */ current_left_volume = ( l < 0x08 ? l*30 - 780 : l*15 - 660 ); current_right_volume = ( r < 0x08 ? r*30 - 780 : r*15 - 660 ); set_prescaled_volume(); #endif break; case SOUND_BALANCE: #ifdef HAVE_MAS3587F tmp = ((value * 127 / 100) & 0xff) << 8; mas_codec_writereg(0x11, tmp & 0xff00); #else /* Convert to percent */ current_balance = value * 2; #endif break; case SOUND_BASS: #ifdef HAVE_MAS3587F tmp = (((value-12) * 8) & 0xff) << 8; mas_codec_writereg(0x14, tmp & 0xff00); #else mas_writereg(MAS_REG_KBASS, bass_table[value]); current_bass = (value-15) * 10; set_prescaled_volume(); #endif break; case SOUND_TREBLE: #ifdef HAVE_MAS3587F tmp = (((value-12) * 8) & 0xff) << 8; mas_codec_writereg(0x15, tmp & 0xff00); #else mas_writereg(MAS_REG_KTREBLE, treble_table[value]); current_treble = (value-15) * 10; set_prescaled_volume(); #endif break; #ifdef HAVE_MAS3587F case SOUND_SUPERBASS: if (value) { tmp = MAX(MIN(value * 12, 0x7f), 0); mas_codec_writereg(MAS_REG_KMDB_STR, (tmp & 0xff) << 8); tmp = 0x30; /* MDB_HAR: Space for experiment here */ mas_codec_writereg(MAS_REG_KMDB_HAR, (tmp & 0xff) << 8); tmp = 60 / 10; /* calculate MDB_FC, 60hz - experiment here, this would depend on the earphones... perhaps make it tunable? */ mas_codec_writereg(MAS_REG_KMDB_FC, (tmp & 0xff) << 8); tmp = (3 * tmp) / 2; /* calculate MDB_SHAPE */ mas_codec_writereg(MAS_REG_KMDB_SWITCH, ((tmp & 0xff) << 8) /* MDB_SHAPE */ | 2); /* MDB_SWITCH enable */ } else { mas_codec_writereg(MAS_REG_KMDB_STR, 0); mas_codec_writereg(MAS_REG_KMDB_HAR, 0); mas_codec_writereg(MAS_REG_KMDB_SWITCH, 0); /* MDB_SWITCH disable */ } break; case SOUND_LOUDNESS: tmp = MAX(MIN(value * 4, 0x44), 0); mas_codec_writereg(MAS_REG_KLOUDNESS, (tmp & 0xff) << 8); break; case SOUND_AVC: switch (value) { case 1: /* 2s */ tmp = (0x2 << 8) | (0x8 << 12); break; case 2: /* 4s */ tmp = (0x4 << 8) | (0x8 << 12); break; case 3: /* 8s */ tmp = (0x8 << 8) | (0x8 << 12); break; case -1: /* turn off and then turn on again to decay quickly */ tmp = mas_codec_readreg(MAS_REG_KAVC); mas_codec_writereg(MAS_REG_KAVC, 0); break; default: /* off */ tmp = 0; break; } mas_codec_writereg(MAS_REG_KAVC, tmp); break; #endif case SOUND_CHANNELS: mpeg_sound_channel_config(value); break; } #endif /* SIMULATOR */ } int mpeg_val2phys(int setting, int value) { int result = 0; switch(setting) { case SOUND_VOLUME: result = value; break; case SOUND_BALANCE: result = value * 2; break; case SOUND_BASS: #ifdef HAVE_MAS3587F result = value - 12; #else result = value - 15; #endif break; case SOUND_TREBLE: #ifdef HAVE_MAS3587F result = value - 12; #else result = value - 15; #endif break; #ifdef HAVE_MAS3587F case SOUND_LOUDNESS: result = value; break; case SOUND_SUPERBASS: result = value * 10; break; case SOUND_LEFT_GAIN: case SOUND_RIGHT_GAIN: result = (value - 2) * 15; break; case SOUND_MIC_GAIN: result = value * 15 + 210; break; #endif } return result; } int mpeg_phys2val(int setting, int value) { int result = 0; switch(setting) { case SOUND_VOLUME: result = value; break; case SOUND_BALANCE: result = value / 2; break; case SOUND_BASS: #ifdef HAVE_MAS3587F result = value + 12; #else result = value + 15; #endif break; case SOUND_TREBLE: #ifdef HAVE_MAS3587F result = value + 12; #else result = value + 15; #endif break; #ifdef HAVE_MAS3587F case SOUND_SUPERBASS: result = value / 10; break; case SOUND_LOUDNESS: case SOUND_AVC: case SOUND_LEFT_GAIN: case SOUND_RIGHT_GAIN: case SOUND_MIC_GAIN: result = value; break; #endif } return result; } void mpeg_sound_channel_config(int configuration) { #ifdef SIMULATOR (void)configuration; #else unsigned long val_ll = 0x80000; unsigned long val_lr = 0; unsigned long val_rl = 0; unsigned long val_rr = 0x80000; switch(configuration) { case MPEG_SOUND_STEREO: val_ll = 0x80000; val_lr = 0; val_rl = 0; val_rr = 0x80000; break; case MPEG_SOUND_MONO: val_ll = 0xc0000; val_lr = 0xc0000; val_rl = 0xc0000; val_rr = 0xc0000; break; case MPEG_SOUND_MONO_LEFT: val_ll = 0x80000; val_lr = 0x80000; val_rl = 0; val_rr = 0; break; case MPEG_SOUND_MONO_RIGHT: val_ll = 0; val_lr = 0; val_rl = 0x80000; val_rr = 0x80000; break; case MPEG_SOUND_STEREO_NARROW: val_ll = 0xa0000; val_lr = 0xe0000; val_rl = 0xe0000; val_rr = 0xa0000; break; case MPEG_SOUND_STEREO_WIDE: val_ll = 0x80000; val_lr = 0x40000; val_rl = 0x40000; val_rr = 0x80000; break; case MPEG_SOUND_KARAOKE: val_ll = 0x80001; val_lr = 0x7ffff; val_rl = 0x7ffff; val_rr = 0x80001; break; } #ifdef HAVE_MAS3587F mas_writemem(MAS_BANK_D0, 0x7fc, &val_ll, 1); /* LL */ mas_writemem(MAS_BANK_D0, 0x7fd, &val_lr, 1); /* LR */ mas_writemem(MAS_BANK_D0, 0x7fe, &val_rl, 1); /* RL */ mas_writemem(MAS_BANK_D0, 0x7ff, &val_rr, 1); /* RR */ #else mas_writemem(MAS_BANK_D1, 0x7f8, &val_ll, 1); /* LL */ mas_writemem(MAS_BANK_D1, 0x7f9, &val_lr, 1); /* LR */ mas_writemem(MAS_BANK_D1, 0x7fa, &val_rl, 1); /* RL */ mas_writemem(MAS_BANK_D1, 0x7fb, &val_rr, 1); /* RR */ #endif #endif } #ifdef HAVE_MAS3587F /* This function works by telling the decoder that we have another crystal frequency than we actually have. It will adjust its internal parameters and the result is that the audio is played at another pitch. The pitch value is in tenths of percent. */ void mpeg_set_pitch(int pitch) { unsigned long val; /* invert pitch value */ pitch = 1000000/pitch; /* Calculate the new (bogus) frequency */ val = 18432*pitch/1000; mas_writemem(MAS_BANK_D0,0x7f3,&val,1); /* We must tell the MAS that the frequency has changed. This will unfortunately cause a short silence. */ mas_writemem(MAS_BANK_D0,0x7f1,&shadow_7f1,1); } #endif void mp3_init(int volume, int bass, int treble, int balance, int loudness, int bass_boost, int avc, int channel_config) { #ifdef SIMULATOR volume = bass = treble = balance = loudness = bass_boost = avc = channel_config; #else #ifdef HAVE_MAS3507D unsigned long val; loudness = bass_boost = avc; #endif setup_sci0(); #ifdef HAVE_MAS3587F or_b(0x08, &PAIORH); /* output for /PR */ init_playback(); mas_version_code = mas_readver(); DEBUGF("MAS3587 derivate %d, version B%d\n", (mas_version_code & 0xff00) >> 8, mas_version_code & 0xff); #endif #ifdef HAVE_DAC3550A dac_init(); #endif #ifdef HAVE_MAS3507D and_b(~0x20, &PBDRL); sleep(HZ/5); or_b(0x20, &PBDRL); sleep(HZ/5); /* set IRQ6 to edge detect */ ICR |= 0x02; /* set IRQ6 prio 8 */ IPRB = ( IPRB & 0xff0f ) | 0x0080; mas_readmem(MAS_BANK_D1, 0xff7, &mas_version_code, 1); mas_writereg(0x3b, 0x20); /* Don't ask why. The data sheet doesn't say */ mas_run(1); sleep(HZ); /* Clear the upper 12 bits of the 32-bit samples */ mas_writereg(0xc5, 0); mas_writereg(0xc6, 0); /* We need to set the PLL for a 14.1318MHz crystal */ if(mas_version_code == 0x0601) /* Version F10? */ { val = 0x5d9d0; mas_writemem(MAS_BANK_D0, 0x32d, &val, 1); val = 0xfffceceb; mas_writemem(MAS_BANK_D0, 0x32e, &val, 1); val = 0x0; mas_writemem(MAS_BANK_D0, 0x32f, &val, 1); mas_run(0x475); } else { val = 0x5d9d0; mas_writemem(MAS_BANK_D0, 0x36d, &val, 1); val = 0xfffceceb; mas_writemem(MAS_BANK_D0, 0x36e, &val, 1); val = 0x0; mas_writemem(MAS_BANK_D0, 0x36f, &val, 1); mas_run(0xfcb); } #endif #ifdef HAVE_MAS3507D mas_poll_start(1); mas_writereg(MAS_REG_KPRESCALE, 0xe9400); dac_enable(true); mpeg_sound_channel_config(channel_config); #endif #ifdef HAVE_MAS3587F ICR &= ~0x0010; /* IRQ3 level sensitive */ PACR1 = (PACR1 & 0x3fff) | 0x4000; /* PA15 is IRQ3 */ #endif /* Must be done before calling mpeg_sound_set() */ mpeg_is_initialized = true; mpeg_sound_set(SOUND_BASS, bass); mpeg_sound_set(SOUND_TREBLE, treble); mpeg_sound_set(SOUND_BALANCE, balance); mpeg_sound_set(SOUND_VOLUME, volume); #ifdef HAVE_MAS3587F mpeg_sound_channel_config(channel_config); mpeg_sound_set(SOUND_LOUDNESS, loudness); mpeg_sound_set(SOUND_SUPERBASS, bass_boost); mpeg_sound_set(SOUND_AVC, avc); #endif #endif /* !SIMULATOR */ playing = false; paused = true; } /* new functions, to be exported to plugin API */ #ifndef SIMULATOR void mp3_play_init(void) { #ifdef HAVE_MAS3587F init_playback(); #endif playing = false; paused = true; callback_for_more = NULL; mp3_reset_playtime(); } void mp3_play_data(unsigned char* start, int size, void (*get_more)(unsigned char** start, int* size) /* callback fn */ ) { /* init DMA */ DAR3 = 0x5FFFEC3; CHCR3 &= ~0x0002; /* Clear interrupt */ CHCR3 = 0x1504; /* Single address destination, TXI0, IE=1 */ DMAOR = 0x0001; /* Enable DMA */ callback_for_more = get_more; SAR3 = (unsigned int)start; DTCR3 = size & 0xffff; playing = true; paused = true; CHCR3 |= 0x0001; /* Enable DMA IRQ */ #ifdef HAVE_MAS3587F demand_irq_enable(true); #endif } void mp3_play_pause(bool play) { if (paused && play) { /* resume playback */ SCR0 |= 0x80; paused = false; playstart_tick = current_tick; } else if (!paused && !play) { /* stop playback */ SCR0 &= 0x7f; paused = true; cumulative_ticks += current_tick - playstart_tick; } } void mp3_play_stop(void) { playing = false; mp3_play_pause(false); CHCR3 &= ~0x0001; /* Disable the DMA interrupt */ #ifdef HAVE_MAS3587F demand_irq_enable(false); #endif } long mp3_get_playtime(void) { if (paused) return cumulative_ticks; else return cumulative_ticks + current_tick - playstart_tick; } void mp3_reset_playtime(void) { cumulative_ticks = 0; playstart_tick = current_tick; } bool mp3_is_playing(void) { return playing; } /* returns the next byte position which would be transferred */ unsigned char* mp3_get_pos(void) { return (unsigned char*)SAR3; } #endif /* #ifndef SIMULATOR */