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author | Björn Stenberg <bjorn@haxx.se> | 2002-05-24 12:22:14 +0000 |
---|---|---|
committer | Björn Stenberg <bjorn@haxx.se> | 2002-05-24 12:22:14 +0000 |
commit | 1ac4600e5bf3ff937d404622158111b576651829 (patch) | |
tree | 0d2d106b3f9a44aef8a6900a4142be0cafb241cc | |
parent | ffb6a9db8e1aeef43306e5f0c83c1547bd82546b (diff) | |
download | rockbox-1ac4600e5bf3ff937d404622158111b576651829.tar.gz rockbox-1ac4600e5bf3ff937d404622158111b576651829.zip |
First version
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@695 a1c6a512-1295-4272-9138-f99709370657
-rw-r--r-- | firmware/mpeg.c | 494 | ||||
-rw-r--r-- | firmware/mpeg.h | 31 |
2 files changed, 525 insertions, 0 deletions
diff --git a/firmware/mpeg.c b/firmware/mpeg.c new file mode 100644 index 0000000000..5bf4fe0fd8 --- /dev/null +++ b/firmware/mpeg.c | |||
@@ -0,0 +1,494 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Linus Nielsen Feltzing | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | #include <stdbool.h> | ||
20 | #include "i2c.h" | ||
21 | #include "mas.h" | ||
22 | #include "dac.h" | ||
23 | #include "sh7034.h" | ||
24 | #include "system.h" | ||
25 | #include "debug.h" | ||
26 | #include "kernel.h" | ||
27 | #include "thread.h" | ||
28 | #include "panic.h" | ||
29 | #include "file.h" | ||
30 | |||
31 | #define MPEG_STACK_SIZE 0x2000 | ||
32 | #define MPEG_BUFSIZE 0x100000 | ||
33 | #define MPEG_CHUNKSIZE 0x20000 | ||
34 | #define MPEG_LOW_WATER 0x30000 | ||
35 | |||
36 | #define MPEG_PLAY 1 | ||
37 | #define MPEG_STOP 2 | ||
38 | #define MPEG_PAUSE 3 | ||
39 | #define MPEG_RESUME 4 | ||
40 | #define MPEG_NEED_DATA 100 | ||
41 | |||
42 | static unsigned int bass_table[] = | ||
43 | { | ||
44 | 0, | ||
45 | 0x800, /* 1dB */ | ||
46 | 0x10000, /* 2dB */ | ||
47 | 0x17c00, /* 3dB */ | ||
48 | 0x1f800, /* 4dB */ | ||
49 | 0x27000, /* 5dB */ | ||
50 | 0x2e400, /* 6dB */ | ||
51 | 0x35800, /* 7dB */ | ||
52 | 0x3c000, /* 8dB */ | ||
53 | 0x42800, /* 9dB */ | ||
54 | 0x48800, /* 10dB */ | ||
55 | 0x4e400, /* 11dB */ | ||
56 | 0x53800, /* 12dB */ | ||
57 | 0x58800, /* 13dB */ | ||
58 | 0x5d400, /* 14dB */ | ||
59 | 0x61800 /* 15dB */ | ||
60 | }; | ||
61 | |||
62 | static unsigned int treble_table[] = | ||
63 | { | ||
64 | 0, | ||
65 | 0x5400, /* 1dB */ | ||
66 | 0xac00, /* 2dB */ | ||
67 | 0x10400, /* 3dB */ | ||
68 | 0x16000, /* 4dB */ | ||
69 | 0x1c000, /* 5dB */ | ||
70 | 0x22400, /* 6dB */ | ||
71 | 0x28400, /* 7dB */ | ||
72 | 0x2ec00, /* 8dB */ | ||
73 | 0x35400, /* 9dB */ | ||
74 | 0x3c000, /* 10dB */ | ||
75 | 0x42c00, /* 11dB */ | ||
76 | 0x49c00, /* 12dB */ | ||
77 | 0x51800, /* 13dB */ | ||
78 | 0x58400, /* 14dB */ | ||
79 | 0x5f800 /* 15dB */ | ||
80 | }; | ||
81 | |||
82 | static unsigned char fliptable[] = | ||
83 | { | ||
84 | 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, | ||
85 | 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, | ||
86 | 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, | ||
87 | 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, | ||
88 | 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, | ||
89 | 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, | ||
90 | 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, | ||
91 | 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, | ||
92 | 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, | ||
93 | 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, | ||
94 | 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, | ||
95 | 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, | ||
96 | 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, | ||
97 | 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, | ||
98 | 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, | ||
99 | 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, | ||
100 | 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, | ||
101 | 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, | ||
102 | 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, | ||
103 | 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, | ||
104 | 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, | ||
105 | 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, | ||
106 | 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, | ||
107 | 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, | ||
108 | 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, | ||
109 | 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, | ||
110 | 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, | ||
111 | 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, | ||
112 | 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, | ||
113 | 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, | ||
114 | 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, | ||
115 | 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff | ||
116 | }; | ||
117 | |||
118 | static struct event_queue mpeg_queue; | ||
119 | static int mpeg_stack[MPEG_STACK_SIZE/sizeof(int)]; | ||
120 | |||
121 | static unsigned char mp3buf[ MPEG_BUFSIZE ]; | ||
122 | static int mp3buf_write; | ||
123 | static int mp3buf_read; | ||
124 | |||
125 | static int last_dma_chunk_size; | ||
126 | |||
127 | static bool dma_on; /* The DMA is active */ | ||
128 | static bool playing; /* We are playing an MP3 stream */ | ||
129 | static bool filling; /* We are filling the buffer with data from disk */ | ||
130 | |||
131 | static int mpeg_file = -1; | ||
132 | |||
133 | static void mas_poll_start(int interval_in_ms) | ||
134 | { | ||
135 | unsigned int count; | ||
136 | |||
137 | count = FREQ / 1000 / 8 * interval_in_ms; | ||
138 | |||
139 | if(count > 0xffff) | ||
140 | { | ||
141 | panicf("Error! The MAS poll interval is too long (%d ms)\n", | ||
142 | interval_in_ms); | ||
143 | return; | ||
144 | } | ||
145 | |||
146 | /* We are using timer 1 */ | ||
147 | |||
148 | TSTR &= ~0x02; /* Stop the timer */ | ||
149 | TSNC &= ~0x02; /* No synchronization */ | ||
150 | TMDR &= ~0x02; /* Operate normally */ | ||
151 | |||
152 | TCNT1 = 0; /* Start counting at 0 */ | ||
153 | GRA1 = count; | ||
154 | TCR1 = 0x23; /* Clear at GRA match, sysclock/8 */ | ||
155 | |||
156 | /* Enable interrupt on level 2 */ | ||
157 | IPRC = (IPRC & ~0x000f) | 0x0002; | ||
158 | |||
159 | TSR1 &= ~0x02; | ||
160 | TIER1 = 0xf9; /* Enable GRA match interrupt */ | ||
161 | |||
162 | TSTR |= 0x02; /* Start timer 2 */ | ||
163 | } | ||
164 | |||
165 | static void init_dma(void) | ||
166 | { | ||
167 | SAR3 = (unsigned int) mp3buf + mp3buf_read; | ||
168 | DAR3 = 0x5FFFEC3; | ||
169 | CHCR3 &= ~0x0002; /* Clear interrupt */ | ||
170 | CHCR3 = 0x1504; /* Single address destination, TXI0, IE=1 */ | ||
171 | last_dma_chunk_size = MIN(65536, mp3buf_write - mp3buf_read); | ||
172 | DTCR3 = last_dma_chunk_size & 0xffff; | ||
173 | DMAOR = 0x0001; /* Enable DMA */ | ||
174 | CHCR3 |= 0x0001; /* Enable DMA IRQ */ | ||
175 | } | ||
176 | |||
177 | static void start_dma(void) | ||
178 | { | ||
179 | SCR0 |= 0x80; | ||
180 | dma_on = true; | ||
181 | } | ||
182 | |||
183 | static void stop_dma(void) | ||
184 | { | ||
185 | SCR0 &= 0x7f; | ||
186 | dma_on = false; | ||
187 | } | ||
188 | |||
189 | static void dma_tick(void) | ||
190 | { | ||
191 | /* Start DMA if it isn't running */ | ||
192 | if(playing && !dma_on) | ||
193 | { | ||
194 | if(PBDR & 0x4000) | ||
195 | { | ||
196 | if(!(SCR0 & 0x80)) | ||
197 | start_dma(); | ||
198 | } | ||
199 | } | ||
200 | } | ||
201 | |||
202 | static void bitswap(unsigned char *data, int length) | ||
203 | { | ||
204 | int i; | ||
205 | for(i = 0;i < length;i++) | ||
206 | { | ||
207 | data[i] = fliptable[data[i]]; | ||
208 | } | ||
209 | } | ||
210 | |||
211 | static void reset_mp3_buffer(void) | ||
212 | { | ||
213 | mp3buf_read = 0; | ||
214 | mp3buf_write = 0; | ||
215 | } | ||
216 | |||
217 | #pragma interrupt | ||
218 | void IMIA1(void) | ||
219 | { | ||
220 | dma_tick(); | ||
221 | TSR1 &= ~0x01; | ||
222 | } | ||
223 | |||
224 | static void mpeg_thread(void) | ||
225 | { | ||
226 | struct event ev; | ||
227 | int len; | ||
228 | int free_space_left; | ||
229 | int amount_to_read; | ||
230 | bool play_pending; | ||
231 | |||
232 | play_pending = false; | ||
233 | playing = false; | ||
234 | |||
235 | while(1) | ||
236 | { | ||
237 | DEBUGF("S\n"); | ||
238 | queue_wait(&mpeg_queue, &ev); | ||
239 | switch(ev.id) | ||
240 | { | ||
241 | case MPEG_PLAY: | ||
242 | /* Stop the current stream */ | ||
243 | play_pending = false; | ||
244 | playing = false; | ||
245 | stop_dma(); | ||
246 | |||
247 | reset_mp3_buffer(); | ||
248 | |||
249 | mpeg_file = open((char*)ev.data, O_RDONLY); | ||
250 | if(mpeg_file < 0) | ||
251 | { | ||
252 | DEBUGF("Couldn't open %s\n",ev.data); | ||
253 | break; | ||
254 | } | ||
255 | |||
256 | /* Make it read more data */ | ||
257 | filling = true; | ||
258 | queue_post(&mpeg_queue, MPEG_NEED_DATA, 0); | ||
259 | |||
260 | /* Tell the file loading code that we want to start playing | ||
261 | as soon as we have some data */ | ||
262 | play_pending = true; | ||
263 | break; | ||
264 | |||
265 | case MPEG_STOP: | ||
266 | /* Stop the current stream */ | ||
267 | playing = false; | ||
268 | stop_dma(); | ||
269 | break; | ||
270 | |||
271 | case MPEG_PAUSE: | ||
272 | /* Stop the current stream */ | ||
273 | playing = false; | ||
274 | stop_dma(); | ||
275 | break; | ||
276 | |||
277 | case MPEG_RESUME: | ||
278 | /* Stop the current stream */ | ||
279 | playing = true; | ||
280 | start_dma(); | ||
281 | break; | ||
282 | |||
283 | case MPEG_NEED_DATA: | ||
284 | free_space_left = mp3buf_read - mp3buf_write; | ||
285 | |||
286 | /* We interpret 0 as "empty buffer" */ | ||
287 | if(free_space_left <= 0) | ||
288 | free_space_left = MPEG_BUFSIZE + free_space_left; | ||
289 | |||
290 | if(free_space_left <= MPEG_CHUNKSIZE) | ||
291 | { | ||
292 | DEBUGF("0\n"); | ||
293 | filling = false; | ||
294 | break;; | ||
295 | } | ||
296 | |||
297 | amount_to_read = MIN(MPEG_CHUNKSIZE, free_space_left); | ||
298 | amount_to_read = MIN(MPEG_BUFSIZE - mp3buf_write, amount_to_read); | ||
299 | |||
300 | /* Read in a few seconds worth of MP3 data. We don't want to | ||
301 | read too large chunks because the bitswapping will take | ||
302 | too much time. We must keep the DMA happy and also give | ||
303 | the other threads a chance to run. */ | ||
304 | DEBUGF("R\n"); | ||
305 | len = read(mpeg_file, mp3buf+mp3buf_write, amount_to_read); | ||
306 | if(len) | ||
307 | { | ||
308 | DEBUGF("B\n"); | ||
309 | bitswap(mp3buf + mp3buf_write, len); | ||
310 | |||
311 | mp3buf_write += len; | ||
312 | if(mp3buf_write >= MPEG_BUFSIZE) | ||
313 | { | ||
314 | mp3buf_write = 0; | ||
315 | DEBUGF("W\n"); | ||
316 | } | ||
317 | |||
318 | /* Tell ourselves that we want more data */ | ||
319 | queue_post(&mpeg_queue, MPEG_NEED_DATA, 0); | ||
320 | |||
321 | /* And while we're at it, see if we have startet playing | ||
322 | yet. If not, do it. */ | ||
323 | if(play_pending) | ||
324 | { | ||
325 | play_pending = false; | ||
326 | playing = true; | ||
327 | |||
328 | init_dma(); | ||
329 | start_dma(); | ||
330 | } | ||
331 | } | ||
332 | else | ||
333 | { | ||
334 | close(mpeg_file); | ||
335 | |||
336 | /* Make sure that the write pointer is at a word | ||
337 | boundary */ | ||
338 | mp3buf_write &= 0xfffffffe; | ||
339 | |||
340 | #if 1 | ||
341 | /* No more data to play */ | ||
342 | DEBUGF("Finished playing\n"); | ||
343 | playing = false; | ||
344 | filling = false; | ||
345 | #else | ||
346 | next_track(); | ||
347 | if(new_file() < 0) | ||
348 | { | ||
349 | /* No more data to play */ | ||
350 | DEBUGF("Finished playing\n"); | ||
351 | playing = false; | ||
352 | filling = false; | ||
353 | } | ||
354 | else | ||
355 | { | ||
356 | /* Tell ourselves that we want more data */ | ||
357 | queue_post(&mpeg_queue, MPEG_NEED_DATA, 0); | ||
358 | } | ||
359 | #endif | ||
360 | } | ||
361 | break; | ||
362 | } | ||
363 | } | ||
364 | } | ||
365 | |||
366 | static void setup_sci0(void) | ||
367 | { | ||
368 | /* PB15 is I/O, PB14 is IRQ6, PB12 is SCK0 */ | ||
369 | PBCR1 = (PBCR1 & 0x0cff) | 0x1200; | ||
370 | |||
371 | /* Set PB12 to output */ | ||
372 | PBIOR |= 0x1000; | ||
373 | |||
374 | /* Disable serial port */ | ||
375 | SCR0 = 0x00; | ||
376 | |||
377 | /* Synchronous, no prescale */ | ||
378 | SMR0 = 0x80; | ||
379 | |||
380 | /* Set baudrate 1Mbit/s */ | ||
381 | BRR0 = 0x03; | ||
382 | |||
383 | /* use SCK as serial clock output */ | ||
384 | SCR0 = 0x01; | ||
385 | |||
386 | /* Clear FER and PER */ | ||
387 | SSR0 &= 0xe7; | ||
388 | |||
389 | /* Set interrupt ITU2 and SCI0 priority to 0 */ | ||
390 | IPRD &= 0x0ff0; | ||
391 | |||
392 | /* set IRQ6 and IRQ7 to edge detect */ | ||
393 | ICR |= 0x03; | ||
394 | |||
395 | /* set PB15 and PB14 to inputs */ | ||
396 | PBIOR &= 0x7fff; | ||
397 | PBIOR &= 0xbfff; | ||
398 | |||
399 | /* set IRQ6 prio 8 and IRQ7 prio 0 */ | ||
400 | IPRB = ( IPRB & 0xff00 ) | 0x0080; | ||
401 | |||
402 | /* Enable End of DMA interrupt at prio 8 */ | ||
403 | IPRC = (IPRC & 0xf0ff) | 0x0800; | ||
404 | |||
405 | /* Enable Tx (only!) */ | ||
406 | SCR0 |= 0x20; | ||
407 | } | ||
408 | |||
409 | void mpeg_init(void) | ||
410 | { | ||
411 | int rc; | ||
412 | |||
413 | setup_sci0(); | ||
414 | |||
415 | #ifdef DEBUG | ||
416 | { | ||
417 | unsigned char buf[32]; | ||
418 | unsigned char str[32]; | ||
419 | int i; | ||
420 | |||
421 | rc = mas_readmem(MAS_BANK_D1,0xff6,(unsigned long*)buf,2); | ||
422 | if (rc) | ||
423 | panicf("Error - mas_readmem(0xff6) returned %d\n", rc); | ||
424 | |||
425 | i = buf[0] | buf[1] << 8; | ||
426 | DEBUGF("MAS version: %x\n", i); | ||
427 | i = buf[4] | buf[5] << 8; | ||
428 | DEBUGF("MAS revision: %x\n", i); | ||
429 | |||
430 | rc = mas_readmem(MAS_BANK_D1,0xff9,(unsigned long*)buf,7); | ||
431 | if (rc) | ||
432 | panicf("Error - mas_readmem(0xff9) returned %d\n", rc); | ||
433 | |||
434 | for (i = 0;i < 7;i++) { | ||
435 | str[i*2+1] = buf[i*4]; | ||
436 | str[i*2] = buf[i*4+1]; | ||
437 | } | ||
438 | str[i*2] = 0; | ||
439 | DEBUGF("Description: %s\n", str); | ||
440 | } | ||
441 | #endif | ||
442 | |||
443 | rc = mas_writereg(0x3b, 0x20); | ||
444 | if (rc < 0) | ||
445 | panicf("Error - mas_writereg(0x3b) returned %d\n", rc); | ||
446 | |||
447 | rc = mas_run(1); | ||
448 | if (rc < 0) | ||
449 | panicf("Error - mas_run(1) returned %d\n", rc); | ||
450 | |||
451 | queue_init(&mpeg_queue); | ||
452 | create_thread(mpeg_thread, mpeg_stack, sizeof(mpeg_stack)); | ||
453 | mas_poll_start(2); | ||
454 | |||
455 | mas_writereg(MAS_REG_KPRESCALE, 0xe9400); | ||
456 | } | ||
457 | |||
458 | void mpeg_play(char* trackname) | ||
459 | { | ||
460 | queue_post(&mpeg_queue, MPEG_PLAY, trackname); | ||
461 | } | ||
462 | |||
463 | void mpeg_stop(void) | ||
464 | { | ||
465 | queue_post(&mpeg_queue, MPEG_STOP, NULL); | ||
466 | } | ||
467 | |||
468 | void mpeg_pause(void) | ||
469 | { | ||
470 | queue_post(&mpeg_queue, MPEG_PAUSE, NULL); | ||
471 | } | ||
472 | |||
473 | void mpeg_resume(void) | ||
474 | { | ||
475 | queue_post(&mpeg_queue, MPEG_RESUME, NULL); | ||
476 | } | ||
477 | |||
478 | void mpeg_volume(int percent) | ||
479 | { | ||
480 | int volume = 0x2c * percent / 100; | ||
481 | dac_volume(volume); | ||
482 | } | ||
483 | |||
484 | void mpeg_bass(int percent) | ||
485 | { | ||
486 | int bass = 15 * percent / 100; | ||
487 | mas_writereg(MAS_REG_KBASS, bass_table[bass]); | ||
488 | } | ||
489 | |||
490 | void mpeg_treble(int percent) | ||
491 | { | ||
492 | int treble = 15 * percent / 100; | ||
493 | mas_writereg(MAS_REG_KTREBLE, treble_table[treble]); | ||
494 | } | ||
diff --git a/firmware/mpeg.h b/firmware/mpeg.h new file mode 100644 index 0000000000..493e5f55a2 --- /dev/null +++ b/firmware/mpeg.h | |||
@@ -0,0 +1,31 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Linus Nielsen Feltzing | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | #ifndef _MPEG_H_ | ||
20 | #define _MPEG_H_ | ||
21 | |||
22 | void mpeg_init(void); | ||
23 | void mpeg_play(char* trackname); | ||
24 | void mpeg_stop(void); | ||
25 | void mpeg_pause(void); | ||
26 | void mpeg_resume(void); | ||
27 | void mpeg_volume(int percent); | ||
28 | void mpeg_bass(int percent); | ||
29 | void mpeg_treble(int percent); | ||
30 | |||
31 | #endif | ||