summaryrefslogtreecommitdiffstats
path: root/apps/codec_thread.c
blob: f166f2ba18c37e4033c8b3e5965643929e6c3593 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2005-2007 Miika Pekkarinen
 * Copyright (C) 2007-2008 Nicolas Pennequin
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include "config.h"
#include "system.h"
#include "playback.h"
#include "codec_thread.h"
#include "kernel.h"
#include "codecs.h"
#include "buffering.h"
#include "pcmbuf.h"
#include "dsp.h"
#include "abrepeat.h"
#include "metadata.h"
#include "splash.h"

/* Define LOGF_ENABLE to enable logf output in this file */
/*#define LOGF_ENABLE*/
#include "logf.h"

/* macros to enable logf for queues
   logging on SYS_TIMEOUT can be disabled */
#ifdef SIMULATOR
/* Define this for logf output of all queuing except SYS_TIMEOUT */
#define PLAYBACK_LOGQUEUES
/* Define this to logf SYS_TIMEOUT messages */
/*#define PLAYBACK_LOGQUEUES_SYS_TIMEOUT*/
#endif

#ifdef PLAYBACK_LOGQUEUES
#define LOGFQUEUE logf
#else
#define LOGFQUEUE(...)
#endif

#ifdef PLAYBACK_LOGQUEUES_SYS_TIMEOUT
#define LOGFQUEUE_SYS_TIMEOUT logf
#else
#define LOGFQUEUE_SYS_TIMEOUT(...)
#endif


/* Variables are commented with the threads that use them:
 * A=audio, C=codec, V=voice. A suffix of - indicates that
 * the variable is read but not updated on that thread.

 * Unless otherwise noted, the extern variables are located
 * in playback.c.
 */

/* Main state control */

/* Type of codec loaded? (C/A) */
static int current_codectype SHAREDBSS_ATTR = AFMT_UNKNOWN;

extern struct mp3entry *thistrack_id3,  /* the currently playing track */
                       *othertrack_id3; /* prev track during track-change-transition, or end of playlist,
                                         * next track otherwise */

/* Track change controls */
extern struct event_queue audio_queue SHAREDBSS_ATTR;


extern struct codec_api ci; /* from codecs.c */

/* Codec thread */
static unsigned int codec_thread_id; /* For modifying thread priority later */
static struct event_queue codec_queue SHAREDBSS_ATTR;
static struct queue_sender_list codec_queue_sender_list SHAREDBSS_ATTR;
static long codec_stack[(DEFAULT_STACK_SIZE + 0x2000)/sizeof(long)]
                IBSS_ATTR;
static const char codec_thread_name[] = "codec";

/* static routines */
static void codec_queue_ack(intptr_t ackme)
{
    queue_reply(&codec_queue, ackme);
}

static intptr_t codec_queue_send(long id, intptr_t data)
{
    return queue_send(&codec_queue, id, data);
}

/**************************************/

/** misc external functions */

/* Used to check whether a new codec must be loaded. See array audio_formats[]
 * in metadata.c */
int get_codec_base_type(int type)
{
    int base_type = type;
    switch (type) {
        case AFMT_MPA_L1:
        case AFMT_MPA_L2:
        case AFMT_MPA_L3:
            base_type = AFMT_MPA_L3;
            break;
        case AFMT_MPC_SV7:
        case AFMT_MPC_SV8:
            base_type = AFMT_MPC_SV7;
            break;
        case AFMT_MP4_AAC:
        case AFMT_MP4_AAC_HE:
            base_type = AFMT_MP4_AAC;
            break;
        case AFMT_SAP:
        case AFMT_CMC:
        case AFMT_CM3:
        case AFMT_CMR:
        case AFMT_CMS:
        case AFMT_DMC:
        case AFMT_DLT:
        case AFMT_MPT:
        case AFMT_MPD:
        case AFMT_RMT:
        case AFMT_TMC:
        case AFMT_TM8:
        case AFMT_TM2:
            base_type = AFMT_SAP;
            break;
        default:
            break;
    }

    return base_type;
}

const char *get_codec_filename(int cod_spec)
{
    const char *fname;

#ifdef HAVE_RECORDING
    /* Can choose decoder or encoder if one available */
    int type = cod_spec & CODEC_TYPE_MASK;
    int afmt = cod_spec & CODEC_AFMT_MASK;

    if ((unsigned)afmt >= AFMT_NUM_CODECS)
        type = AFMT_UNKNOWN | (type & CODEC_TYPE_MASK);

    fname = (type == CODEC_TYPE_ENCODER) ?
                audio_formats[afmt].codec_enc_root_fn :
                audio_formats[afmt].codec_root_fn;

    logf("%s: %d - %s",
        (type == CODEC_TYPE_ENCODER) ? "Encoder" : "Decoder",
        afmt, fname ? fname : "<unknown>");
#else /* !HAVE_RECORDING */
    /* Always decoder */
    if ((unsigned)cod_spec >= AFMT_NUM_CODECS)
        cod_spec = AFMT_UNKNOWN;
    fname = audio_formats[cod_spec].codec_root_fn;
    logf("Codec: %d - %s",  cod_spec, fname ? fname : "<unknown>");
#endif /* HAVE_RECORDING */

    return fname;
} /* get_codec_filename */

/* Borrow the codec thread and return the ID */
void codec_thread_do_callback(void (*fn)(void), unsigned int *id)
{
    /* Set id before telling thread to call something; it may be
     * needed before this function returns. */
    if (id != NULL)
        *id = codec_thread_id;

    /* Codec thread will signal just before entering callback */
    LOGFQUEUE("codec >| Q_CODEC_DO_CALLBACK");
    codec_queue_send(Q_CODEC_DO_CALLBACK, (intptr_t)fn);
}


/** codec API callbacks */

static void* codec_get_buffer(size_t *size)
{
    if (codec_size >= CODEC_SIZE)
        return NULL;
    *size = CODEC_SIZE - codec_size;
    return &codecbuf[codec_size];
}

static void codec_pcmbuf_insert_callback(
        const void *ch1, const void *ch2, int count)
{
    const char *src[2] = { ch1, ch2 };

    while (count > 0)
    {
        int out_count = dsp_output_count(ci.dsp, count);
        int inp_count;
        char *dest;

        /* Prevent audio from a previous track from playing */
        if (ci.new_track || ci.stop_codec)
            return;

        while ((dest = pcmbuf_request_buffer(&out_count)) == NULL)
        {
            cancel_cpu_boost();
            sleep(1);
            if (ci.seek_time || ci.new_track || ci.stop_codec)
                return;
        }

        /* Get the real input_size for output_size bytes, guarding
         * against resampling buffer overflows. */
        inp_count = dsp_input_count(ci.dsp, out_count);

        if (inp_count <= 0)
            return;

        /* Input size has grown, no error, just don't write more than length */
        if (inp_count > count)
            inp_count = count;

        out_count = dsp_process(ci.dsp, dest, src, inp_count);

        if (out_count <= 0)
            return;

        pcmbuf_write_complete(out_count);

        count -= inp_count;
    }
} /* codec_pcmbuf_insert_callback */

static void codec_set_elapsed_callback(unsigned long value)
{
    if (ci.seek_time)
        return;

#ifdef AB_REPEAT_ENABLE
    ab_position_report(value);
#endif

    unsigned long latency = pcmbuf_get_latency();
    if (value < latency)
        thistrack_id3->elapsed = 0;
    else
    {
        unsigned long elapsed = value - latency;
        if (elapsed > thistrack_id3->elapsed ||
            elapsed < thistrack_id3->elapsed - 2)
            {
                thistrack_id3->elapsed = elapsed;
            }
    }
}

static void codec_set_offset_callback(size_t value)
{
    if (ci.seek_time)
        return;

    unsigned long latency = pcmbuf_get_latency() * thistrack_id3->bitrate / 8;
    if (value < latency)
        thistrack_id3->offset = 0;
    else
        thistrack_id3->offset = value - latency;
}

/* helper function, not a callback */
static void codec_advance_buffer_counters(size_t amount)
{
    bufadvance(get_audio_hid(), amount);
    ci.curpos += amount;
}

/* copy up-to size bytes into ptr and return the actual size copied */
static size_t codec_filebuf_callback(void *ptr, size_t size)
{
    ssize_t copy_n;

    if (ci.stop_codec)
        return 0;

    copy_n = bufread(get_audio_hid(), size, ptr);

    /* Nothing requested OR nothing left */
    if (copy_n == 0)
        return 0;

    /* Update read and other position pointers */
    codec_advance_buffer_counters(copy_n);

    /* Return the actual amount of data copied to the buffer */
    return copy_n;
} /* codec_filebuf_callback */

static void* codec_request_buffer_callback(size_t *realsize, size_t reqsize)
{
    size_t copy_n = reqsize;
    ssize_t ret;
    void *ptr;

    ret = bufgetdata(get_audio_hid(), reqsize, &ptr);
    if (ret >= 0)
        copy_n = MIN((size_t)ret, reqsize);
    else
        copy_n = 0;

    if (copy_n == 0)
        ptr = NULL;

    *realsize = copy_n;
    return ptr;
} /* codec_request_buffer_callback */

static void codec_advance_buffer_callback(size_t amount)
{
    codec_advance_buffer_counters(amount);
    codec_set_offset_callback(ci.curpos);
}

static void codec_advance_buffer_loc_callback(void *ptr)
{
    size_t amount = buf_get_offset(get_audio_hid(), ptr);
    codec_advance_buffer_callback(amount);
}

static bool codec_seek_buffer_callback(size_t newpos)
{
    logf("codec_seek_buffer_callback");

    int ret = bufseek(get_audio_hid(), newpos);
    if (ret == 0) {
        ci.curpos = newpos;
        return true;
    }
    else {
        return false;
    }
}

static void codec_seek_complete_callback(void)
{
    struct queue_event ev;

    logf("seek_complete");

    /* Clear DSP */
    dsp_configure(ci.dsp, DSP_FLUSH, 0);

    /* Post notification to audio thread */
    LOGFQUEUE("audio > Q_AUDIO_SEEK_COMPLETE");
    queue_post(&audio_queue, Q_AUDIO_SEEK_COMPLETE, 0);

    /* Wait for ACK */
    queue_wait(&codec_queue, &ev);

    /* ACK back in context */
    codec_queue_ack(Q_AUDIO_SEEK_COMPLETE);
}

static bool codec_request_next_track_callback(void)
{
    struct queue_event ev;

    logf("Request new track");

    audio_set_prev_elapsed(thistrack_id3->elapsed);

#ifdef AB_REPEAT_ENABLE
    ab_end_of_track_report();
#endif

    if (ci.stop_codec)
    {
        /* Handle ACK in outer loop */
        LOGFQUEUE("codec: already stopping");
        return false;
    }

    trigger_cpu_boost();

    /* Post request to audio thread */
    LOGFQUEUE("codec > audio Q_AUDIO_CHECK_NEW_TRACK");
    queue_post(&audio_queue, Q_AUDIO_CHECK_NEW_TRACK, 0);

    /* Wait for ACK */
    queue_wait(&codec_queue, &ev);

    if (ev.data == Q_CODEC_REQUEST_COMPLETE)
    {
        /* Seek to the beginning of the new track because if the struct
           mp3entry was buffered, "elapsed" might not be zero (if the track has
           been played already but not unbuffered) */
        codec_seek_buffer_callback(thistrack_id3->first_frame_offset);
    }

    /* ACK back in context */
    codec_queue_ack(Q_AUDIO_CHECK_NEW_TRACK);

    if (ev.data != Q_CODEC_REQUEST_COMPLETE || ci.stop_codec)
    {
        LOGFQUEUE("codec <= request failed (%d)", ev.data);
        return false;
    }

    LOGFQUEUE("codec <= Q_CODEC_REQEST_COMPLETE");
    return true;
}

static void codec_configure_callback(int setting, intptr_t value)
{
    if (!dsp_configure(ci.dsp, setting, value))
        { logf("Illegal key:%d", setting); }
}

/* Initialize codec API */
void codec_init_codec_api(void)
{
    ci.dsp                 = (struct dsp_config *)dsp_configure(NULL, DSP_MYDSP,
                                                                CODEC_IDX_AUDIO);
    ci.codec_get_buffer    = codec_get_buffer;
    ci.pcmbuf_insert       = codec_pcmbuf_insert_callback;
    ci.set_elapsed         = codec_set_elapsed_callback;
    ci.read_filebuf        = codec_filebuf_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.seek_buffer         = codec_seek_buffer_callback;
    ci.seek_complete       = codec_seek_complete_callback;
    ci.request_next_track  = codec_request_next_track_callback;
    ci.set_offset          = codec_set_offset_callback;
    ci.configure           = codec_configure_callback;
}


/* track change */

/** CODEC THREAD */
static void codec_thread(void)
{
    struct queue_event ev;


    while (1)   
    {
        int status = CODEC_OK;
        void *handle = NULL;
        int hid;
        const char *codec_fn;
        
#ifdef HAVE_CROSSFADE
        if (!pcmbuf_is_crossfade_active())
#endif
        {
            cancel_cpu_boost();
        }

        queue_wait(&codec_queue, &ev);

        switch (ev.id)
        {
            case Q_CODEC_LOAD_DISK:
                LOGFQUEUE("codec < Q_CODEC_LOAD_DISK");
                codec_fn = get_codec_filename(ev.data);
                if (!codec_fn)
                    break;
#ifdef AUDIO_HAVE_RECORDING
                if (ev.data & CODEC_TYPE_ENCODER)
                {
                    ev.id = Q_ENCODER_LOAD_DISK;
                    handle = codec_load_file(codec_fn, &ci);
                    if (handle)
                        codec_queue_ack(Q_ENCODER_LOAD_DISK);
                }
                else
#endif
                {
                    codec_queue_ack(Q_CODEC_LOAD_DISK);
                    handle = codec_load_file(codec_fn, &ci);
                }
                break;

            case Q_CODEC_LOAD:
                LOGFQUEUE("codec < Q_CODEC_LOAD");
                codec_queue_ack(Q_CODEC_LOAD);
                hid = (int)ev.data;
                handle = codec_load_buf(hid, &ci);
                bufclose(hid);
                break;

            case Q_CODEC_DO_CALLBACK:
                LOGFQUEUE("codec < Q_CODEC_DO_CALLBACK");
                codec_queue_ack(Q_CODEC_DO_CALLBACK);
                if ((void*)ev.data != NULL)
                {
                    cpucache_commit_discard();
                    ((void (*)(void))ev.data)();
                    cpucache_commit();
                }
                break;

            default:
                LOGFQUEUE("codec < default : %ld", ev.id);
        }

        if (handle)
        {
            /* Codec loaded - call the entrypoint */
            yield();
            logf("codec running");
            status = codec_begin(handle);
            logf("codec stopped");
            codec_close(handle);
            current_codectype = AFMT_UNKNOWN;

            if (ci.stop_codec)
                status = CODEC_OK;
        }

        switch (ev.id)
        {
#ifdef AUDIO_HAVE_RECORDING
            case Q_ENCODER_LOAD_DISK:
#endif
            case Q_CODEC_LOAD_DISK:
            case Q_CODEC_LOAD:
                /* Notify about the status */
                if (!handle)
                    status = CODEC_ERROR;
                LOGFQUEUE("codec > audio notify status: %d", status);
                queue_post(&audio_queue, ev.id, status);
                break;
        }
    }
}

void make_codec_thread(void)
{
    queue_init(&codec_queue, false);
    codec_thread_id = create_thread(
            codec_thread, codec_stack, sizeof(codec_stack),
            CREATE_THREAD_FROZEN,
            codec_thread_name IF_PRIO(, PRIORITY_PLAYBACK)
            IF_COP(, CPU));
    queue_enable_queue_send(&codec_queue, &codec_queue_sender_list,
                            codec_thread_id);
}

void codec_thread_resume(void)
{
    thread_thaw(codec_thread_id);
}

bool is_codec_thread(void)
{
    return thread_get_current() == codec_thread_id;
}

#ifdef HAVE_PRIORITY_SCHEDULING
int codec_thread_get_priority(void)
{
    return thread_get_priority(codec_thread_id);
}

int codec_thread_set_priority(int priority)
{
    return thread_set_priority(codec_thread_id, priority);
}
#endif /* HAVE_PRIORITY_SCHEDULING */

/* functions for audio thread use */
intptr_t codec_ack_msg(intptr_t data, bool stop_codec)
{
    intptr_t resp;
    LOGFQUEUE("codec >| Q_CODEC_ACK: %d", data);
    if (stop_codec)
        ci.stop_codec = true;
    resp = codec_queue_send(Q_CODEC_ACK, data);
    if (stop_codec)
        codec_stop();
    LOGFQUEUE("  ack: %ld", resp);
    return resp;
}

bool codec_load(int hid, int cod_spec)
{
    bool retval = false;

    ci.stop_codec = false;
    current_codectype = cod_spec;

    if (hid >= 0)
    {
        LOGFQUEUE("audio >| codec Q_CODEC_LOAD: %d", hid);
        retval = codec_queue_send(Q_CODEC_LOAD, hid) != Q_NULL;
    }
    else
    {
        LOGFQUEUE("audio >| codec Q_CODEC_LOAD_DISK: %d", cod_spec);
        retval = codec_queue_send(Q_CODEC_LOAD_DISK, cod_spec) != Q_NULL;
    }

    if (!retval)
    {
        ci.stop_codec = true;
        current_codectype = AFMT_UNKNOWN;
    }

    return retval;
}

void codec_stop(void)
{
    ci.stop_codec = true;
    /* Wait until it's in the main loop */
    while (codec_ack_msg(0, false) != Q_NULL);
    current_codectype = AFMT_UNKNOWN;
}

int codec_loaded(void)
{
    return current_codectype;
}