1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * av7110_av.c: audio and video MPEG decoder stuff
4  *
5  * Copyright (C) 1999-2002 Ralph  Metzler
6  *                       & Marcus Metzler for convergence integrated media GmbH
7  *
8  * originally based on code by:
9  * Copyright (C) 1998,1999 Christian Theiss <mistert@rz.fh-augsburg.de>
10  *
11  * the project's page is at https://linuxtv.org
12  */
13 
14 #include <linux/ethtool.h>
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/string.h>
18 #include <linux/delay.h>
19 #include <linux/fs.h>
20 
21 #include "av7110.h"
22 #include "av7110_hw.h"
23 #include "av7110_av.h"
24 #include "av7110_ipack.h"
25 
26 /* MPEG-2 (ISO 13818 / H.222.0) stream types */
27 #define PROG_STREAM_MAP  0xBC
28 #define PRIVATE_STREAM1  0xBD
29 #define PADDING_STREAM	 0xBE
30 #define PRIVATE_STREAM2  0xBF
31 #define AUDIO_STREAM_S	 0xC0
32 #define AUDIO_STREAM_E	 0xDF
33 #define VIDEO_STREAM_S	 0xE0
34 #define VIDEO_STREAM_E	 0xEF
35 #define ECM_STREAM	 0xF0
36 #define EMM_STREAM	 0xF1
37 #define DSM_CC_STREAM	 0xF2
38 #define ISO13522_STREAM  0xF3
39 #define PROG_STREAM_DIR  0xFF
40 
41 #define PTS_DTS_FLAGS	 0xC0
42 
43 //pts_dts flags
44 #define PTS_ONLY	 0x80
45 #define PTS_DTS		 0xC0
46 #define TS_SIZE		 188
47 #define TRANS_ERROR	 0x80
48 #define PAY_START	 0x40
49 #define TRANS_PRIO	 0x20
50 #define PID_MASK_HI	 0x1F
51 //flags
52 #define TRANS_SCRMBL1	 0x80
53 #define TRANS_SCRMBL2	 0x40
54 #define ADAPT_FIELD	 0x20
55 #define PAYLOAD		 0x10
56 #define COUNT_MASK	 0x0F
57 
58 // adaptation flags
59 #define DISCON_IND	 0x80
60 #define RAND_ACC_IND	 0x40
61 #define ES_PRI_IND	 0x20
62 #define PCR_FLAG	 0x10
63 #define OPCR_FLAG	 0x08
64 #define SPLICE_FLAG	 0x04
65 #define TRANS_PRIV	 0x02
66 #define ADAP_EXT_FLAG	 0x01
67 
68 // adaptation extension flags
69 #define LTW_FLAG	 0x80
70 #define PIECE_RATE	 0x40
71 #define SEAM_SPLICE	 0x20
72 
73 
74 static void p_to_t(u8 const *buf, long int length, u16 pid,
75 		   u8 *counter, struct dvb_demux_feed *feed);
76 static int write_ts_to_decoder(struct av7110 *av7110, int type, const u8 *buf, size_t len);
77 
78 
av7110_record_cb(struct dvb_filter_pes2ts * p2t,u8 * buf,size_t len)79 int av7110_record_cb(struct dvb_filter_pes2ts *p2t, u8 *buf, size_t len)
80 {
81 	struct dvb_demux_feed *dvbdmxfeed = p2t->priv;
82 
83 	if (!(dvbdmxfeed->ts_type & TS_PACKET))
84 		return 0;
85 	if (buf[3] == 0xe0)	 // video PES do not have a length in TS
86 		buf[4] = buf[5] = 0;
87 	if (dvbdmxfeed->ts_type & TS_PAYLOAD_ONLY)
88 		return dvbdmxfeed->cb.ts(buf, len, NULL, 0,
89 					 &dvbdmxfeed->feed.ts, NULL);
90 	else
91 		return dvb_filter_pes2ts(p2t, buf, len, 1);
92 }
93 
dvb_filter_pes2ts_cb(void * priv,unsigned char * data)94 static int dvb_filter_pes2ts_cb(void *priv, unsigned char *data)
95 {
96 	struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) priv;
97 
98 	dvbdmxfeed->cb.ts(data, 188, NULL, 0,
99 			  &dvbdmxfeed->feed.ts, NULL);
100 	return 0;
101 }
102 
av7110_av_start_record(struct av7110 * av7110,int av,struct dvb_demux_feed * dvbdmxfeed)103 int av7110_av_start_record(struct av7110 *av7110, int av,
104 			   struct dvb_demux_feed *dvbdmxfeed)
105 {
106 	int ret = 0;
107 	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
108 
109 	dprintk(2, "av7110:%p, dvb_demux_feed:%p\n", av7110, dvbdmxfeed);
110 
111 	if (av7110->playing || (av7110->rec_mode & av))
112 		return -EBUSY;
113 	av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0);
114 	dvbdmx->recording = 1;
115 	av7110->rec_mode |= av;
116 
117 	switch (av7110->rec_mode) {
118 	case RP_AUDIO:
119 		dvb_filter_pes2ts_init(&av7110->p2t[0],
120 				       dvbdmx->pesfilter[0]->pid,
121 				       dvb_filter_pes2ts_cb,
122 				       (void *) dvbdmx->pesfilter[0]);
123 		ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, AudioPES, 0);
124 		break;
125 
126 	case RP_VIDEO:
127 		dvb_filter_pes2ts_init(&av7110->p2t[1],
128 				       dvbdmx->pesfilter[1]->pid,
129 				       dvb_filter_pes2ts_cb,
130 				       (void *) dvbdmx->pesfilter[1]);
131 		ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, VideoPES, 0);
132 		break;
133 
134 	case RP_AV:
135 		dvb_filter_pes2ts_init(&av7110->p2t[0],
136 				       dvbdmx->pesfilter[0]->pid,
137 				       dvb_filter_pes2ts_cb,
138 				       (void *) dvbdmx->pesfilter[0]);
139 		dvb_filter_pes2ts_init(&av7110->p2t[1],
140 				       dvbdmx->pesfilter[1]->pid,
141 				       dvb_filter_pes2ts_cb,
142 				       (void *) dvbdmx->pesfilter[1]);
143 		ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, AV_PES, 0);
144 		break;
145 	}
146 	return ret;
147 }
148 
av7110_av_start_play(struct av7110 * av7110,int av)149 int av7110_av_start_play(struct av7110 *av7110, int av)
150 {
151 	int ret = 0;
152 	dprintk(2, "av7110:%p, \n", av7110);
153 
154 	if (av7110->rec_mode)
155 		return -EBUSY;
156 	if (av7110->playing & av)
157 		return -EBUSY;
158 
159 	av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0);
160 
161 	if (av7110->playing == RP_NONE) {
162 		av7110_ipack_reset(&av7110->ipack[0]);
163 		av7110_ipack_reset(&av7110->ipack[1]);
164 	}
165 
166 	av7110->playing |= av;
167 	switch (av7110->playing) {
168 	case RP_AUDIO:
169 		ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AudioPES, 0);
170 		break;
171 	case RP_VIDEO:
172 		ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, VideoPES, 0);
173 		av7110->sinfo = 0;
174 		break;
175 	case RP_AV:
176 		av7110->sinfo = 0;
177 		ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AV_PES, 0);
178 		break;
179 	}
180 	return ret;
181 }
182 
av7110_av_stop(struct av7110 * av7110,int av)183 int av7110_av_stop(struct av7110 *av7110, int av)
184 {
185 	int ret = 0;
186 	dprintk(2, "av7110:%p, \n", av7110);
187 
188 	if (!(av7110->playing & av) && !(av7110->rec_mode & av))
189 		return 0;
190 	av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0);
191 	if (av7110->playing) {
192 		av7110->playing &= ~av;
193 		switch (av7110->playing) {
194 		case RP_AUDIO:
195 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, AudioPES, 0);
196 			break;
197 		case RP_VIDEO:
198 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Play, 2, VideoPES, 0);
199 			break;
200 		case RP_NONE:
201 			ret = av7110_set_vidmode(av7110, av7110->vidmode);
202 			break;
203 		}
204 	} else {
205 		av7110->rec_mode &= ~av;
206 		switch (av7110->rec_mode) {
207 		case RP_AUDIO:
208 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, AudioPES, 0);
209 			break;
210 		case RP_VIDEO:
211 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Record, 2, VideoPES, 0);
212 			break;
213 		case RP_NONE:
214 			break;
215 		}
216 	}
217 	return ret;
218 }
219 
220 
av7110_pes_play(void * dest,struct dvb_ringbuffer * buf,int dlen)221 int av7110_pes_play(void *dest, struct dvb_ringbuffer *buf, int dlen)
222 {
223 	int len;
224 	u32 sync;
225 	u16 blen;
226 
227 	if (!dlen) {
228 		wake_up(&buf->queue);
229 		return -1;
230 	}
231 	while (1) {
232 		len = dvb_ringbuffer_avail(buf);
233 		if (len < 6) {
234 			wake_up(&buf->queue);
235 			return -1;
236 		}
237 		sync =  DVB_RINGBUFFER_PEEK(buf, 0) << 24;
238 		sync |= DVB_RINGBUFFER_PEEK(buf, 1) << 16;
239 		sync |= DVB_RINGBUFFER_PEEK(buf, 2) << 8;
240 		sync |= DVB_RINGBUFFER_PEEK(buf, 3);
241 
242 		if (((sync &~ 0x0f) == 0x000001e0) ||
243 		    ((sync &~ 0x1f) == 0x000001c0) ||
244 		    (sync == 0x000001bd))
245 			break;
246 		printk("resync\n");
247 		DVB_RINGBUFFER_SKIP(buf, 1);
248 	}
249 	blen =  DVB_RINGBUFFER_PEEK(buf, 4) << 8;
250 	blen |= DVB_RINGBUFFER_PEEK(buf, 5);
251 	blen += 6;
252 	if (len < blen || blen > dlen) {
253 		//printk("buffer empty - avail %d blen %u dlen %d\n", len, blen, dlen);
254 		wake_up(&buf->queue);
255 		return -1;
256 	}
257 
258 	dvb_ringbuffer_read(buf, dest, (size_t) blen);
259 
260 	dprintk(2, "pread=0x%08lx, pwrite=0x%08lx\n",
261 	       (unsigned long) buf->pread, (unsigned long) buf->pwrite);
262 	wake_up(&buf->queue);
263 	return blen;
264 }
265 
266 
av7110_set_volume(struct av7110 * av7110,unsigned int volleft,unsigned int volright)267 int av7110_set_volume(struct av7110 *av7110, unsigned int volleft,
268 		      unsigned int volright)
269 {
270 	unsigned int vol, val, balance = 0;
271 	int err;
272 
273 	dprintk(2, "av7110:%p, \n", av7110);
274 
275 	av7110->mixer.volume_left = volleft;
276 	av7110->mixer.volume_right = volright;
277 
278 	switch (av7110->adac_type) {
279 	case DVB_ADAC_TI:
280 		volleft = (volleft * 256) / 1036;
281 		volright = (volright * 256) / 1036;
282 		if (volleft > 0x3f)
283 			volleft = 0x3f;
284 		if (volright > 0x3f)
285 			volright = 0x3f;
286 		if ((err = SendDAC(av7110, 3, 0x80 + volleft)))
287 			return err;
288 		return SendDAC(av7110, 4, volright);
289 
290 	case DVB_ADAC_CRYSTAL:
291 		volleft = 127 - volleft / 2;
292 		volright = 127 - volright / 2;
293 		i2c_writereg(av7110, 0x20, 0x03, volleft);
294 		i2c_writereg(av7110, 0x20, 0x04, volright);
295 		return 0;
296 
297 	case DVB_ADAC_MSP34x0:
298 		vol  = (volleft > volright) ? volleft : volright;
299 		val	= (vol * 0x73 / 255) << 8;
300 		if (vol > 0)
301 		       balance = ((volright - volleft) * 127) / vol;
302 		msp_writereg(av7110, MSP_WR_DSP, 0x0001, balance << 8);
303 		msp_writereg(av7110, MSP_WR_DSP, 0x0000, val); /* loudspeaker */
304 		msp_writereg(av7110, MSP_WR_DSP, 0x0006, val); /* headphonesr */
305 		return 0;
306 
307 	case DVB_ADAC_MSP34x5:
308 		vol = (volleft > volright) ? volleft : volright;
309 		val = (vol * 0x73 / 255) << 8;
310 		if (vol > 0)
311 			balance = ((volright - volleft) * 127) / vol;
312 		msp_writereg(av7110, MSP_WR_DSP, 0x0001, balance << 8);
313 		msp_writereg(av7110, MSP_WR_DSP, 0x0000, val); /* loudspeaker */
314 		return 0;
315 	}
316 
317 	return 0;
318 }
319 
av7110_set_vidmode(struct av7110 * av7110,enum av7110_video_mode mode)320 int av7110_set_vidmode(struct av7110 *av7110, enum av7110_video_mode mode)
321 {
322 	int ret;
323 	dprintk(2, "av7110:%p, \n", av7110);
324 
325 	ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, LoadVidCode, 1, mode);
326 
327 	if (!ret && !av7110->playing) {
328 		ret = ChangePIDs(av7110, av7110->pids[DMX_PES_VIDEO],
329 			   av7110->pids[DMX_PES_AUDIO],
330 			   av7110->pids[DMX_PES_TELETEXT],
331 			   0, av7110->pids[DMX_PES_PCR]);
332 		if (!ret)
333 			ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, Scan, 0);
334 	}
335 	return ret;
336 }
337 
338 
339 static enum av7110_video_mode sw2mode[16] = {
340 	AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_NTSC,
341 	AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_PAL,
342 	AV7110_VIDEO_MODE_NTSC, AV7110_VIDEO_MODE_NTSC,
343 	AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_NTSC,
344 	AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL,
345 	AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL,
346 	AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL,
347 	AV7110_VIDEO_MODE_PAL, AV7110_VIDEO_MODE_PAL,
348 };
349 
get_video_format(struct av7110 * av7110,u8 * buf,int count)350 static int get_video_format(struct av7110 *av7110, u8 *buf, int count)
351 {
352 	int i;
353 	int hsize, vsize;
354 	int sw;
355 	u8 *p;
356 	int ret = 0;
357 
358 	dprintk(2, "av7110:%p, \n", av7110);
359 
360 	if (av7110->sinfo)
361 		return 0;
362 	for (i = 7; i < count - 10; i++) {
363 		p = buf + i;
364 		if (p[0] || p[1] || p[2] != 0x01 || p[3] != 0xb3)
365 			continue;
366 		p += 4;
367 		hsize = ((p[1] &0xF0) >> 4) | (p[0] << 4);
368 		vsize = ((p[1] &0x0F) << 8) | (p[2]);
369 		sw = (p[3] & 0x0F);
370 		ret = av7110_set_vidmode(av7110, sw2mode[sw]);
371 		if (!ret) {
372 			dprintk(2, "playback %dx%d fr=%d\n", hsize, vsize, sw);
373 			av7110->sinfo = 1;
374 		}
375 		break;
376 	}
377 	return ret;
378 }
379 
380 
381 /****************************************************************************
382  * I/O buffer management and control
383  ****************************************************************************/
384 
aux_ring_buffer_write(struct dvb_ringbuffer * rbuf,const u8 * buf,unsigned long count)385 static inline long aux_ring_buffer_write(struct dvb_ringbuffer *rbuf,
386 					 const u8 *buf, unsigned long count)
387 {
388 	unsigned long todo = count;
389 	int free;
390 
391 	while (todo > 0) {
392 		if (dvb_ringbuffer_free(rbuf) < 2048) {
393 			if (wait_event_interruptible(rbuf->queue,
394 						     (dvb_ringbuffer_free(rbuf) >= 2048)))
395 				return count - todo;
396 		}
397 		free = dvb_ringbuffer_free(rbuf);
398 		if (free > todo)
399 			free = todo;
400 		dvb_ringbuffer_write(rbuf, buf, free);
401 		todo -= free;
402 		buf += free;
403 	}
404 
405 	return count - todo;
406 }
407 
play_video_cb(u8 * buf,int count,void * priv)408 static void play_video_cb(u8 *buf, int count, void *priv)
409 {
410 	struct av7110 *av7110 = (struct av7110 *) priv;
411 	dprintk(2, "av7110:%p, \n", av7110);
412 
413 	if ((buf[3] & 0xe0) == 0xe0) {
414 		get_video_format(av7110, buf, count);
415 		aux_ring_buffer_write(&av7110->avout, buf, count);
416 	} else
417 		aux_ring_buffer_write(&av7110->aout, buf, count);
418 }
419 
play_audio_cb(u8 * buf,int count,void * priv)420 static void play_audio_cb(u8 *buf, int count, void *priv)
421 {
422 	struct av7110 *av7110 = (struct av7110 *) priv;
423 	dprintk(2, "av7110:%p, \n", av7110);
424 
425 	aux_ring_buffer_write(&av7110->aout, buf, count);
426 }
427 
428 
429 #define FREE_COND_TS (dvb_ringbuffer_free(rb) >= 4096)
430 
ts_play(struct av7110 * av7110,const char __user * buf,unsigned long count,int nonblock,int type)431 static ssize_t ts_play(struct av7110 *av7110, const char __user *buf,
432 		       unsigned long count, int nonblock, int type)
433 {
434 	struct dvb_ringbuffer *rb;
435 	u8 *kb;
436 	unsigned long todo = count;
437 
438 	dprintk(2, "%s: type %d cnt %lu\n", __func__, type, count);
439 
440 	rb = (type) ? &av7110->avout : &av7110->aout;
441 	kb = av7110->kbuf[type];
442 
443 	if (!kb)
444 		return -ENOBUFS;
445 
446 	if (nonblock && !FREE_COND_TS)
447 		return -EWOULDBLOCK;
448 
449 	while (todo >= TS_SIZE) {
450 		if (!FREE_COND_TS) {
451 			if (nonblock)
452 				return count - todo;
453 			if (wait_event_interruptible(rb->queue, FREE_COND_TS))
454 				return count - todo;
455 		}
456 		if (copy_from_user(kb, buf, TS_SIZE))
457 			return -EFAULT;
458 		write_ts_to_decoder(av7110, type, kb, TS_SIZE);
459 		todo -= TS_SIZE;
460 		buf += TS_SIZE;
461 	}
462 
463 	return count - todo;
464 }
465 
466 
467 #define FREE_COND (dvb_ringbuffer_free(&av7110->avout) >= 20 * 1024 && \
468 		   dvb_ringbuffer_free(&av7110->aout) >= 20 * 1024)
469 
dvb_play(struct av7110 * av7110,const char __user * buf,unsigned long count,int nonblock,int type)470 static ssize_t dvb_play(struct av7110 *av7110, const char __user *buf,
471 			unsigned long count, int nonblock, int type)
472 {
473 	unsigned long todo = count, n;
474 	dprintk(2, "av7110:%p, \n", av7110);
475 
476 	if (!av7110->kbuf[type])
477 		return -ENOBUFS;
478 
479 	if (nonblock && !FREE_COND)
480 		return -EWOULDBLOCK;
481 
482 	while (todo > 0) {
483 		if (!FREE_COND) {
484 			if (nonblock)
485 				return count - todo;
486 			if (wait_event_interruptible(av7110->avout.queue,
487 						     FREE_COND))
488 				return count - todo;
489 		}
490 		n = todo;
491 		if (n > IPACKS * 2)
492 			n = IPACKS * 2;
493 		if (copy_from_user(av7110->kbuf[type], buf, n))
494 			return -EFAULT;
495 		av7110_ipack_instant_repack(av7110->kbuf[type], n,
496 					    &av7110->ipack[type]);
497 		todo -= n;
498 		buf += n;
499 	}
500 	return count - todo;
501 }
502 
dvb_play_kernel(struct av7110 * av7110,const u8 * buf,unsigned long count,int nonblock,int type)503 static ssize_t dvb_play_kernel(struct av7110 *av7110, const u8 *buf,
504 			unsigned long count, int nonblock, int type)
505 {
506 	unsigned long todo = count, n;
507 	dprintk(2, "av7110:%p, \n", av7110);
508 
509 	if (!av7110->kbuf[type])
510 		return -ENOBUFS;
511 
512 	if (nonblock && !FREE_COND)
513 		return -EWOULDBLOCK;
514 
515 	while (todo > 0) {
516 		if (!FREE_COND) {
517 			if (nonblock)
518 				return count - todo;
519 			if (wait_event_interruptible(av7110->avout.queue,
520 						     FREE_COND))
521 				return count - todo;
522 		}
523 		n = todo;
524 		if (n > IPACKS * 2)
525 			n = IPACKS * 2;
526 		av7110_ipack_instant_repack(buf, n, &av7110->ipack[type]);
527 		todo -= n;
528 		buf += n;
529 	}
530 	return count - todo;
531 }
532 
dvb_aplay(struct av7110 * av7110,const char __user * buf,unsigned long count,int nonblock,int type)533 static ssize_t dvb_aplay(struct av7110 *av7110, const char __user *buf,
534 			 unsigned long count, int nonblock, int type)
535 {
536 	unsigned long todo = count, n;
537 	dprintk(2, "av7110:%p, \n", av7110);
538 
539 	if (!av7110->kbuf[type])
540 		return -ENOBUFS;
541 	if (nonblock && dvb_ringbuffer_free(&av7110->aout) < 20 * 1024)
542 		return -EWOULDBLOCK;
543 
544 	while (todo > 0) {
545 		if (dvb_ringbuffer_free(&av7110->aout) < 20 * 1024) {
546 			if (nonblock)
547 				return count - todo;
548 			if (wait_event_interruptible(av7110->aout.queue,
549 					(dvb_ringbuffer_free(&av7110->aout) >= 20 * 1024)))
550 				return count-todo;
551 		}
552 		n = todo;
553 		if (n > IPACKS * 2)
554 			n = IPACKS * 2;
555 		if (copy_from_user(av7110->kbuf[type], buf, n))
556 			return -EFAULT;
557 		av7110_ipack_instant_repack(av7110->kbuf[type], n,
558 					    &av7110->ipack[type]);
559 		todo -= n;
560 		buf += n;
561 	}
562 	return count - todo;
563 }
564 
av7110_p2t_init(struct av7110_p2t * p,struct dvb_demux_feed * feed)565 void av7110_p2t_init(struct av7110_p2t *p, struct dvb_demux_feed *feed)
566 {
567 	memset(p->pes, 0, TS_SIZE);
568 	p->counter = 0;
569 	p->pos = 0;
570 	p->frags = 0;
571 	if (feed)
572 		p->feed = feed;
573 }
574 
clear_p2t(struct av7110_p2t * p)575 static void clear_p2t(struct av7110_p2t *p)
576 {
577 	memset(p->pes, 0, TS_SIZE);
578 //	p->counter = 0;
579 	p->pos = 0;
580 	p->frags = 0;
581 }
582 
583 
find_pes_header(u8 const * buf,long int length,int * frags)584 static int find_pes_header(u8 const *buf, long int length, int *frags)
585 {
586 	int c = 0;
587 	int found = 0;
588 
589 	*frags = 0;
590 
591 	while (c < length - 3 && !found) {
592 		if (buf[c] == 0x00 && buf[c + 1] == 0x00 &&
593 		    buf[c + 2] == 0x01) {
594 			switch ( buf[c + 3] ) {
595 			case PROG_STREAM_MAP:
596 			case PRIVATE_STREAM2:
597 			case PROG_STREAM_DIR:
598 			case ECM_STREAM:
599 			case EMM_STREAM:
600 			case PADDING_STREAM:
601 			case DSM_CC_STREAM:
602 			case ISO13522_STREAM:
603 			case PRIVATE_STREAM1:
604 			case AUDIO_STREAM_S ... AUDIO_STREAM_E:
605 			case VIDEO_STREAM_S ... VIDEO_STREAM_E:
606 				found = 1;
607 				break;
608 
609 			default:
610 				c++;
611 				break;
612 			}
613 		} else
614 			c++;
615 	}
616 	if (c == length - 3 && !found) {
617 		if (buf[length - 1] == 0x00)
618 			*frags = 1;
619 		if (buf[length - 2] == 0x00 &&
620 		    buf[length - 1] == 0x00)
621 			*frags = 2;
622 		if (buf[length - 3] == 0x00 &&
623 		    buf[length - 2] == 0x00 &&
624 		    buf[length - 1] == 0x01)
625 			*frags = 3;
626 		return -1;
627 	}
628 
629 	return c;
630 }
631 
av7110_p2t_write(u8 const * buf,long int length,u16 pid,struct av7110_p2t * p)632 void av7110_p2t_write(u8 const *buf, long int length, u16 pid, struct av7110_p2t *p)
633 {
634 	int c, c2, l, add;
635 	int check, rest;
636 
637 	c = 0;
638 	c2 = 0;
639 	if (p->frags){
640 		check = 0;
641 		switch(p->frags) {
642 		case 1:
643 			if (buf[c] == 0x00 && buf[c + 1] == 0x01) {
644 				check = 1;
645 				c += 2;
646 			}
647 			break;
648 		case 2:
649 			if (buf[c] == 0x01) {
650 				check = 1;
651 				c++;
652 			}
653 			break;
654 		case 3:
655 			check = 1;
656 		}
657 		if (check) {
658 			switch (buf[c]) {
659 			case PROG_STREAM_MAP:
660 			case PRIVATE_STREAM2:
661 			case PROG_STREAM_DIR:
662 			case ECM_STREAM:
663 			case EMM_STREAM:
664 			case PADDING_STREAM:
665 			case DSM_CC_STREAM:
666 			case ISO13522_STREAM:
667 			case PRIVATE_STREAM1:
668 			case AUDIO_STREAM_S ... AUDIO_STREAM_E:
669 			case VIDEO_STREAM_S ... VIDEO_STREAM_E:
670 				p->pes[0] = 0x00;
671 				p->pes[1] = 0x00;
672 				p->pes[2] = 0x01;
673 				p->pes[3] = buf[c];
674 				p->pos = 4;
675 				memcpy(p->pes + p->pos, buf + c, (TS_SIZE - 4) - p->pos);
676 				c += (TS_SIZE - 4) - p->pos;
677 				p_to_t(p->pes, (TS_SIZE - 4), pid, &p->counter, p->feed);
678 				clear_p2t(p);
679 				break;
680 
681 			default:
682 				c = 0;
683 				break;
684 			}
685 		}
686 		p->frags = 0;
687 	}
688 
689 	if (p->pos) {
690 		c2 = find_pes_header(buf + c, length - c, &p->frags);
691 		if (c2 >= 0 && c2 < (TS_SIZE - 4) - p->pos)
692 			l = c2+c;
693 		else
694 			l = (TS_SIZE - 4) - p->pos;
695 		memcpy(p->pes + p->pos, buf, l);
696 		c += l;
697 		p->pos += l;
698 		p_to_t(p->pes, p->pos, pid, &p->counter, p->feed);
699 		clear_p2t(p);
700 	}
701 
702 	add = 0;
703 	while (c < length) {
704 		c2 = find_pes_header(buf + c + add, length - c - add, &p->frags);
705 		if (c2 >= 0) {
706 			c2 += c + add;
707 			if (c2 > c){
708 				p_to_t(buf + c, c2 - c, pid, &p->counter, p->feed);
709 				c = c2;
710 				clear_p2t(p);
711 				add = 0;
712 			} else
713 				add = 1;
714 		} else {
715 			l = length - c;
716 			rest = l % (TS_SIZE - 4);
717 			l -= rest;
718 			p_to_t(buf + c, l, pid, &p->counter, p->feed);
719 			memcpy(p->pes, buf + c + l, rest);
720 			p->pos = rest;
721 			c = length;
722 		}
723 	}
724 }
725 
726 
write_ts_header2(u16 pid,u8 * counter,int pes_start,u8 * buf,u8 length)727 static int write_ts_header2(u16 pid, u8 *counter, int pes_start, u8 *buf, u8 length)
728 {
729 	int i;
730 	int c = 0;
731 	int fill;
732 	u8 tshead[4] = { 0x47, 0x00, 0x00, 0x10 };
733 
734 	fill = (TS_SIZE - 4) - length;
735 	if (pes_start)
736 		tshead[1] = 0x40;
737 	if (fill)
738 		tshead[3] = 0x30;
739 	tshead[1] |= (u8)((pid & 0x1F00) >> 8);
740 	tshead[2] |= (u8)(pid & 0x00FF);
741 	tshead[3] |= ((*counter)++ & 0x0F);
742 	memcpy(buf, tshead, 4);
743 	c += 4;
744 
745 	if (fill) {
746 		buf[4] = fill - 1;
747 		c++;
748 		if (fill > 1) {
749 			buf[5] = 0x00;
750 			c++;
751 		}
752 		for (i = 6; i < fill + 4; i++) {
753 			buf[i] = 0xFF;
754 			c++;
755 		}
756 	}
757 
758 	return c;
759 }
760 
761 
p_to_t(u8 const * buf,long int length,u16 pid,u8 * counter,struct dvb_demux_feed * feed)762 static void p_to_t(u8 const *buf, long int length, u16 pid, u8 *counter,
763 		   struct dvb_demux_feed *feed)
764 {
765 	int l, pes_start;
766 	u8 obuf[TS_SIZE];
767 	long c = 0;
768 
769 	pes_start = 0;
770 	if (length > 3 &&
771 	     buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0x01)
772 		switch (buf[3]) {
773 		case PROG_STREAM_MAP:
774 		case PRIVATE_STREAM2:
775 		case PROG_STREAM_DIR:
776 		case ECM_STREAM:
777 		case EMM_STREAM:
778 		case PADDING_STREAM:
779 		case DSM_CC_STREAM:
780 		case ISO13522_STREAM:
781 		case PRIVATE_STREAM1:
782 		case AUDIO_STREAM_S ... AUDIO_STREAM_E:
783 		case VIDEO_STREAM_S ... VIDEO_STREAM_E:
784 			pes_start = 1;
785 			break;
786 
787 		default:
788 			break;
789 		}
790 
791 	while (c < length) {
792 		memset(obuf, 0, TS_SIZE);
793 		if (length - c >= (TS_SIZE - 4)){
794 			l = write_ts_header2(pid, counter, pes_start,
795 					     obuf, (TS_SIZE - 4));
796 			memcpy(obuf + l, buf + c, TS_SIZE - l);
797 			c += TS_SIZE - l;
798 		} else {
799 			l = write_ts_header2(pid, counter, pes_start,
800 					     obuf, length - c);
801 			memcpy(obuf + l, buf + c, TS_SIZE - l);
802 			c = length;
803 		}
804 		feed->cb.ts(obuf, 188, NULL, 0, &feed->feed.ts, NULL);
805 		pes_start = 0;
806 	}
807 }
808 
809 
write_ts_to_decoder(struct av7110 * av7110,int type,const u8 * buf,size_t len)810 static int write_ts_to_decoder(struct av7110 *av7110, int type, const u8 *buf, size_t len)
811 {
812 	struct ipack *ipack = &av7110->ipack[type];
813 
814 	if (buf[1] & TRANS_ERROR) {
815 		av7110_ipack_reset(ipack);
816 		return -1;
817 	}
818 
819 	if (!(buf[3] & PAYLOAD))
820 		return -1;
821 
822 	if (buf[1] & PAY_START)
823 		av7110_ipack_flush(ipack);
824 
825 	if (buf[3] & ADAPT_FIELD) {
826 		if (buf[4] > len - 1 - 4)
827 			return 0;
828 		len -= buf[4] + 1;
829 		buf += buf[4] + 1;
830 	}
831 
832 	av7110_ipack_instant_repack(buf + 4, len - 4, ipack);
833 	return 0;
834 }
835 
836 
av7110_write_to_decoder(struct dvb_demux_feed * feed,const u8 * buf,size_t len)837 int av7110_write_to_decoder(struct dvb_demux_feed *feed, const u8 *buf, size_t len)
838 {
839 	struct dvb_demux *demux = feed->demux;
840 	struct av7110 *av7110 = demux->priv;
841 
842 	dprintk(2, "av7110:%p, \n", av7110);
843 
844 	if (av7110->full_ts && demux->dmx.frontend->source != DMX_MEMORY_FE)
845 		return 0;
846 
847 	switch (feed->pes_type) {
848 	case 0:
849 		if (av7110->audiostate.stream_source == AUDIO_SOURCE_MEMORY)
850 			return -EINVAL;
851 		break;
852 	case 1:
853 		if (av7110->videostate.stream_source == VIDEO_SOURCE_MEMORY)
854 			return -EINVAL;
855 		break;
856 	default:
857 		return -1;
858 	}
859 
860 	return write_ts_to_decoder(av7110, feed->pes_type, buf, len);
861 }
862 
863 
864 
865 /******************************************************************************
866  * Video MPEG decoder events
867  ******************************************************************************/
dvb_video_add_event(struct av7110 * av7110,struct video_event * event)868 void dvb_video_add_event(struct av7110 *av7110, struct video_event *event)
869 {
870 	struct dvb_video_events *events = &av7110->video_events;
871 	int wp;
872 
873 	spin_lock_bh(&events->lock);
874 
875 	wp = (events->eventw + 1) % MAX_VIDEO_EVENT;
876 	if (wp == events->eventr) {
877 		events->overflow = 1;
878 		events->eventr = (events->eventr + 1) % MAX_VIDEO_EVENT;
879 	}
880 
881 	//FIXME: timestamp?
882 	memcpy(&events->events[events->eventw], event, sizeof(struct video_event));
883 	events->eventw = wp;
884 
885 	spin_unlock_bh(&events->lock);
886 
887 	wake_up_interruptible(&events->wait_queue);
888 }
889 
890 
dvb_video_get_event(struct av7110 * av7110,struct video_event * event,int flags)891 static int dvb_video_get_event (struct av7110 *av7110, struct video_event *event, int flags)
892 {
893 	struct dvb_video_events *events = &av7110->video_events;
894 
895 	if (events->overflow) {
896 		events->overflow = 0;
897 		return -EOVERFLOW;
898 	}
899 	if (events->eventw == events->eventr) {
900 		int ret;
901 
902 		if (flags & O_NONBLOCK)
903 			return -EWOULDBLOCK;
904 
905 		ret = wait_event_interruptible(events->wait_queue,
906 					       events->eventw != events->eventr);
907 		if (ret < 0)
908 			return ret;
909 	}
910 
911 	spin_lock_bh(&events->lock);
912 
913 	memcpy(event, &events->events[events->eventr],
914 	       sizeof(struct video_event));
915 	events->eventr = (events->eventr + 1) % MAX_VIDEO_EVENT;
916 
917 	spin_unlock_bh(&events->lock);
918 
919 	return 0;
920 }
921 
922 /******************************************************************************
923  * DVB device file operations
924  ******************************************************************************/
925 
dvb_video_poll(struct file * file,poll_table * wait)926 static __poll_t dvb_video_poll(struct file *file, poll_table *wait)
927 {
928 	struct dvb_device *dvbdev = file->private_data;
929 	struct av7110 *av7110 = dvbdev->priv;
930 	__poll_t mask = 0;
931 
932 	dprintk(2, "av7110:%p, \n", av7110);
933 
934 	if ((file->f_flags & O_ACCMODE) != O_RDONLY)
935 		poll_wait(file, &av7110->avout.queue, wait);
936 
937 	poll_wait(file, &av7110->video_events.wait_queue, wait);
938 
939 	if (av7110->video_events.eventw != av7110->video_events.eventr)
940 		mask = EPOLLPRI;
941 
942 	if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
943 		if (av7110->playing) {
944 			if (FREE_COND)
945 				mask |= (EPOLLOUT | EPOLLWRNORM);
946 		} else {
947 			/* if not playing: may play if asked for */
948 			mask |= (EPOLLOUT | EPOLLWRNORM);
949 		}
950 	}
951 
952 	return mask;
953 }
954 
dvb_video_write(struct file * file,const char __user * buf,size_t count,loff_t * ppos)955 static ssize_t dvb_video_write(struct file *file, const char __user *buf,
956 			       size_t count, loff_t *ppos)
957 {
958 	struct dvb_device *dvbdev = file->private_data;
959 	struct av7110 *av7110 = dvbdev->priv;
960 	unsigned char c;
961 
962 	dprintk(2, "av7110:%p, \n", av7110);
963 
964 	if ((file->f_flags & O_ACCMODE) == O_RDONLY)
965 		return -EPERM;
966 
967 	if (av7110->videostate.stream_source != VIDEO_SOURCE_MEMORY)
968 		return -EPERM;
969 
970 	if (get_user(c, buf))
971 		return -EFAULT;
972 	if (c == 0x47 && count % TS_SIZE == 0)
973 		return ts_play(av7110, buf, count, file->f_flags & O_NONBLOCK, 1);
974 	else
975 		return dvb_play(av7110, buf, count, file->f_flags & O_NONBLOCK, 1);
976 }
977 
dvb_audio_poll(struct file * file,poll_table * wait)978 static __poll_t dvb_audio_poll(struct file *file, poll_table *wait)
979 {
980 	struct dvb_device *dvbdev = file->private_data;
981 	struct av7110 *av7110 = dvbdev->priv;
982 	__poll_t mask = 0;
983 
984 	dprintk(2, "av7110:%p, \n", av7110);
985 
986 	poll_wait(file, &av7110->aout.queue, wait);
987 
988 	if (av7110->playing) {
989 		if (dvb_ringbuffer_free(&av7110->aout) >= 20 * 1024)
990 			mask |= (EPOLLOUT | EPOLLWRNORM);
991 	} else /* if not playing: may play if asked for */
992 		mask = (EPOLLOUT | EPOLLWRNORM);
993 
994 	return mask;
995 }
996 
dvb_audio_write(struct file * file,const char __user * buf,size_t count,loff_t * ppos)997 static ssize_t dvb_audio_write(struct file *file, const char __user *buf,
998 			       size_t count, loff_t *ppos)
999 {
1000 	struct dvb_device *dvbdev = file->private_data;
1001 	struct av7110 *av7110 = dvbdev->priv;
1002 	unsigned char c;
1003 
1004 	dprintk(2, "av7110:%p, \n", av7110);
1005 
1006 	if (av7110->audiostate.stream_source != AUDIO_SOURCE_MEMORY) {
1007 		printk(KERN_ERR "not audio source memory\n");
1008 		return -EPERM;
1009 	}
1010 
1011 	if (get_user(c, buf))
1012 		return -EFAULT;
1013 	if (c == 0x47 && count % TS_SIZE == 0)
1014 		return ts_play(av7110, buf, count, file->f_flags & O_NONBLOCK, 0);
1015 	else
1016 		return dvb_aplay(av7110, buf, count, file->f_flags & O_NONBLOCK, 0);
1017 }
1018 
1019 static u8 iframe_header[] = { 0x00, 0x00, 0x01, 0xe0, 0x00, 0x00, 0x80, 0x00, 0x00 };
1020 
1021 #define MIN_IFRAME 400000
1022 
play_iframe(struct av7110 * av7110,char __user * buf,unsigned int len,int nonblock)1023 static int play_iframe(struct av7110 *av7110, char __user *buf, unsigned int len, int nonblock)
1024 {
1025 	unsigned i, n;
1026 	int progressive = 0;
1027 	int match = 0;
1028 
1029 	dprintk(2, "av7110:%p, \n", av7110);
1030 
1031 	if (len == 0)
1032 		return 0;
1033 
1034 	if (!(av7110->playing & RP_VIDEO)) {
1035 		if (av7110_av_start_play(av7110, RP_VIDEO) < 0)
1036 			return -EBUSY;
1037 	}
1038 
1039 	/* search in buf for instances of 00 00 01 b5 1? */
1040 	for (i = 0; i < len; i++) {
1041 		unsigned char c;
1042 		if (get_user(c, buf + i))
1043 			return -EFAULT;
1044 		if (match == 5) {
1045 			progressive = c & 0x08;
1046 			match = 0;
1047 		}
1048 		if (c == 0x00) {
1049 			match = (match == 1 || match == 2) ? 2 : 1;
1050 			continue;
1051 		}
1052 		switch (match++) {
1053 		case 2: if (c == 0x01)
1054 				continue;
1055 			break;
1056 		case 3: if (c == 0xb5)
1057 				continue;
1058 			break;
1059 		case 4: if ((c & 0xf0) == 0x10)
1060 				continue;
1061 			break;
1062 		}
1063 		match = 0;
1064 	}
1065 
1066 	/* setting n always > 1, fixes problems when playing stillframes
1067 	   consisting of I- and P-Frames */
1068 	n = MIN_IFRAME / len + 1;
1069 
1070 	/* FIXME: nonblock? */
1071 	dvb_play_kernel(av7110, iframe_header, sizeof(iframe_header), 0, 1);
1072 
1073 	for (i = 0; i < n; i++)
1074 		dvb_play(av7110, buf, len, 0, 1);
1075 
1076 	av7110_ipack_flush(&av7110->ipack[1]);
1077 
1078 	if (progressive)
1079 		return vidcom(av7110, AV_VIDEO_CMD_FREEZE, 1);
1080 	else
1081 		return 0;
1082 }
1083 
1084 #ifdef CONFIG_COMPAT
1085 struct compat_video_still_picture {
1086 	compat_uptr_t iFrame;
1087 	int32_t size;
1088 };
1089 #define VIDEO_STILLPICTURE32 _IOW('o', 30, struct compat_video_still_picture)
1090 
1091 struct compat_video_event {
1092 	__s32 type;
1093 	/* unused, make sure to use atomic time for y2038 if it ever gets used */
1094 	compat_long_t timestamp;
1095 	union {
1096 		video_size_t size;
1097 		unsigned int frame_rate;        /* in frames per 1000sec */
1098 		unsigned char vsync_field;      /* unknown/odd/even/progressive */
1099 	} u;
1100 };
1101 #define VIDEO_GET_EVENT32 _IOR('o', 28, struct compat_video_event)
1102 
dvb_compat_video_get_event(struct av7110 * av7110,struct compat_video_event * event,int flags)1103 static int dvb_compat_video_get_event(struct av7110 *av7110,
1104 				      struct compat_video_event *event, int flags)
1105 {
1106 	struct video_event ev;
1107 	int ret;
1108 
1109 	ret = dvb_video_get_event(av7110, &ev, flags);
1110 
1111 	*event = (struct compat_video_event) {
1112 		.type = ev.type,
1113 		.timestamp = ev.timestamp,
1114 		.u.size = ev.u.size,
1115 	};
1116 
1117 	return ret;
1118 }
1119 #endif
1120 
dvb_video_ioctl(struct file * file,unsigned int cmd,void * parg)1121 static int dvb_video_ioctl(struct file *file,
1122 			   unsigned int cmd, void *parg)
1123 {
1124 	struct dvb_device *dvbdev = file->private_data;
1125 	struct av7110 *av7110 = dvbdev->priv;
1126 	unsigned long arg = (unsigned long) parg;
1127 	int ret = 0;
1128 
1129 	dprintk(1, "av7110:%p, cmd=%04x\n", av7110,cmd);
1130 
1131 	if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
1132 		if ( cmd != VIDEO_GET_STATUS && cmd != VIDEO_GET_EVENT &&
1133 		     cmd != VIDEO_GET_SIZE ) {
1134 			return -EPERM;
1135 		}
1136 	}
1137 
1138 	if (mutex_lock_interruptible(&av7110->ioctl_mutex))
1139 		return -ERESTARTSYS;
1140 
1141 	switch (cmd) {
1142 	case VIDEO_STOP:
1143 		av7110->videostate.play_state = VIDEO_STOPPED;
1144 		if (av7110->videostate.stream_source == VIDEO_SOURCE_MEMORY)
1145 			ret = av7110_av_stop(av7110, RP_VIDEO);
1146 		else
1147 			ret = vidcom(av7110, AV_VIDEO_CMD_STOP,
1148 			       av7110->videostate.video_blank ? 0 : 1);
1149 		if (!ret)
1150 			av7110->trickmode = TRICK_NONE;
1151 		break;
1152 
1153 	case VIDEO_PLAY:
1154 		av7110->trickmode = TRICK_NONE;
1155 		if (av7110->videostate.play_state == VIDEO_FREEZED) {
1156 			av7110->videostate.play_state = VIDEO_PLAYING;
1157 			ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0);
1158 			if (ret)
1159 				break;
1160 		}
1161 		if (av7110->videostate.stream_source == VIDEO_SOURCE_MEMORY) {
1162 			if (av7110->playing == RP_AV) {
1163 				ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Stop, 0);
1164 				if (ret)
1165 					break;
1166 				av7110->playing &= ~RP_VIDEO;
1167 			}
1168 			ret = av7110_av_start_play(av7110, RP_VIDEO);
1169 		}
1170 		if (!ret)
1171 			ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0);
1172 		if (!ret)
1173 			av7110->videostate.play_state = VIDEO_PLAYING;
1174 		break;
1175 
1176 	case VIDEO_FREEZE:
1177 		av7110->videostate.play_state = VIDEO_FREEZED;
1178 		if (av7110->playing & RP_VIDEO)
1179 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Pause, 0);
1180 		else
1181 			ret = vidcom(av7110, AV_VIDEO_CMD_FREEZE, 1);
1182 		if (!ret)
1183 			av7110->trickmode = TRICK_FREEZE;
1184 		break;
1185 
1186 	case VIDEO_CONTINUE:
1187 		if (av7110->playing & RP_VIDEO)
1188 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Continue, 0);
1189 		if (!ret)
1190 			ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0);
1191 		if (!ret) {
1192 			av7110->videostate.play_state = VIDEO_PLAYING;
1193 			av7110->trickmode = TRICK_NONE;
1194 		}
1195 		break;
1196 
1197 	case VIDEO_SELECT_SOURCE:
1198 		av7110->videostate.stream_source = (video_stream_source_t) arg;
1199 		break;
1200 
1201 	case VIDEO_SET_BLANK:
1202 		av7110->videostate.video_blank = (int) arg;
1203 		break;
1204 
1205 	case VIDEO_GET_STATUS:
1206 		memcpy(parg, &av7110->videostate, sizeof(struct video_status));
1207 		break;
1208 
1209 #ifdef CONFIG_COMPAT
1210 	case VIDEO_GET_EVENT32:
1211 		ret = dvb_compat_video_get_event(av7110, parg, file->f_flags);
1212 		break;
1213 #endif
1214 
1215 	case VIDEO_GET_EVENT:
1216 		ret = dvb_video_get_event(av7110, parg, file->f_flags);
1217 		break;
1218 
1219 	case VIDEO_GET_SIZE:
1220 		memcpy(parg, &av7110->video_size, sizeof(video_size_t));
1221 		break;
1222 
1223 	case VIDEO_SET_DISPLAY_FORMAT:
1224 	{
1225 		video_displayformat_t format = (video_displayformat_t) arg;
1226 		switch (format) {
1227 		case VIDEO_PAN_SCAN:
1228 			av7110->display_panscan = VID_PAN_SCAN_PREF;
1229 			break;
1230 		case VIDEO_LETTER_BOX:
1231 			av7110->display_panscan = VID_VC_AND_PS_PREF;
1232 			break;
1233 		case VIDEO_CENTER_CUT_OUT:
1234 			av7110->display_panscan = VID_CENTRE_CUT_PREF;
1235 			break;
1236 		default:
1237 			ret = -EINVAL;
1238 		}
1239 		if (ret < 0)
1240 			break;
1241 		av7110->videostate.display_format = format;
1242 		ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetPanScanType,
1243 				    1, av7110->display_panscan);
1244 		break;
1245 	}
1246 
1247 	case VIDEO_SET_FORMAT:
1248 		if (arg > 1) {
1249 			ret = -EINVAL;
1250 			break;
1251 		}
1252 		av7110->display_ar = arg;
1253 		ret = av7110_fw_cmd(av7110, COMTYPE_ENCODER, SetMonitorType,
1254 				    1, (u16) arg);
1255 		break;
1256 
1257 #ifdef CONFIG_COMPAT
1258 	case VIDEO_STILLPICTURE32:
1259 	{
1260 		struct compat_video_still_picture *pic =
1261 			(struct compat_video_still_picture *) parg;
1262 		av7110->videostate.stream_source = VIDEO_SOURCE_MEMORY;
1263 		dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout);
1264 		ret = play_iframe(av7110, compat_ptr(pic->iFrame),
1265 				  pic->size, file->f_flags & O_NONBLOCK);
1266 		break;
1267 	}
1268 #endif
1269 
1270 	case VIDEO_STILLPICTURE:
1271 	{
1272 		struct video_still_picture *pic =
1273 			(struct video_still_picture *) parg;
1274 		av7110->videostate.stream_source = VIDEO_SOURCE_MEMORY;
1275 		dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout);
1276 		ret = play_iframe(av7110, pic->iFrame, pic->size,
1277 				  file->f_flags & O_NONBLOCK);
1278 		break;
1279 	}
1280 
1281 	case VIDEO_FAST_FORWARD:
1282 		//note: arg is ignored by firmware
1283 		if (av7110->playing & RP_VIDEO)
1284 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY,
1285 					    __Scan_I, 2, AV_PES, 0);
1286 		else
1287 			ret = vidcom(av7110, AV_VIDEO_CMD_FFWD, arg);
1288 		if (!ret) {
1289 			av7110->trickmode = TRICK_FAST;
1290 			av7110->videostate.play_state = VIDEO_PLAYING;
1291 		}
1292 		break;
1293 
1294 	case VIDEO_SLOWMOTION:
1295 		if (av7110->playing&RP_VIDEO) {
1296 			if (av7110->trickmode != TRICK_SLOW)
1297 				ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY, __Slow, 2, 0, 0);
1298 			if (!ret)
1299 				ret = vidcom(av7110, AV_VIDEO_CMD_SLOW, arg);
1300 		} else {
1301 			ret = vidcom(av7110, AV_VIDEO_CMD_PLAY, 0);
1302 			if (!ret)
1303 				ret = vidcom(av7110, AV_VIDEO_CMD_STOP, 0);
1304 			if (!ret)
1305 				ret = vidcom(av7110, AV_VIDEO_CMD_SLOW, arg);
1306 		}
1307 		if (!ret) {
1308 			av7110->trickmode = TRICK_SLOW;
1309 			av7110->videostate.play_state = VIDEO_PLAYING;
1310 		}
1311 		break;
1312 
1313 	case VIDEO_GET_CAPABILITIES:
1314 		*(int *)parg = VIDEO_CAP_MPEG1 | VIDEO_CAP_MPEG2 |
1315 			VIDEO_CAP_SYS | VIDEO_CAP_PROG;
1316 		break;
1317 
1318 	case VIDEO_CLEAR_BUFFER:
1319 		dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout);
1320 		av7110_ipack_reset(&av7110->ipack[1]);
1321 		if (av7110->playing == RP_AV) {
1322 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY,
1323 					    __Play, 2, AV_PES, 0);
1324 			if (ret)
1325 				break;
1326 			if (av7110->trickmode == TRICK_FAST)
1327 				ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY,
1328 						    __Scan_I, 2, AV_PES, 0);
1329 			if (av7110->trickmode == TRICK_SLOW) {
1330 				ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY,
1331 						    __Slow, 2, 0, 0);
1332 				if (!ret)
1333 					ret = vidcom(av7110, AV_VIDEO_CMD_SLOW, arg);
1334 			}
1335 			if (av7110->trickmode == TRICK_FREEZE)
1336 				ret = vidcom(av7110, AV_VIDEO_CMD_STOP, 1);
1337 		}
1338 		break;
1339 
1340 	case VIDEO_SET_STREAMTYPE:
1341 		break;
1342 
1343 	default:
1344 		ret = -ENOIOCTLCMD;
1345 		break;
1346 	}
1347 
1348 	mutex_unlock(&av7110->ioctl_mutex);
1349 	return ret;
1350 }
1351 
dvb_audio_ioctl(struct file * file,unsigned int cmd,void * parg)1352 static int dvb_audio_ioctl(struct file *file,
1353 			   unsigned int cmd, void *parg)
1354 {
1355 	struct dvb_device *dvbdev = file->private_data;
1356 	struct av7110 *av7110 = dvbdev->priv;
1357 	unsigned long arg = (unsigned long) parg;
1358 	int ret = 0;
1359 
1360 	dprintk(1, "av7110:%p, cmd=%04x\n", av7110,cmd);
1361 
1362 	if (((file->f_flags & O_ACCMODE) == O_RDONLY) &&
1363 	    (cmd != AUDIO_GET_STATUS))
1364 		return -EPERM;
1365 
1366 	if (mutex_lock_interruptible(&av7110->ioctl_mutex))
1367 		return -ERESTARTSYS;
1368 
1369 	switch (cmd) {
1370 	case AUDIO_STOP:
1371 		if (av7110->audiostate.stream_source == AUDIO_SOURCE_MEMORY)
1372 			ret = av7110_av_stop(av7110, RP_AUDIO);
1373 		else
1374 			ret = audcom(av7110, AUDIO_CMD_MUTE);
1375 		if (!ret)
1376 			av7110->audiostate.play_state = AUDIO_STOPPED;
1377 		break;
1378 
1379 	case AUDIO_PLAY:
1380 		if (av7110->audiostate.stream_source == AUDIO_SOURCE_MEMORY)
1381 			ret = av7110_av_start_play(av7110, RP_AUDIO);
1382 		if (!ret)
1383 			ret = audcom(av7110, AUDIO_CMD_UNMUTE);
1384 		if (!ret)
1385 			av7110->audiostate.play_state = AUDIO_PLAYING;
1386 		break;
1387 
1388 	case AUDIO_PAUSE:
1389 		ret = audcom(av7110, AUDIO_CMD_MUTE);
1390 		if (!ret)
1391 			av7110->audiostate.play_state = AUDIO_PAUSED;
1392 		break;
1393 
1394 	case AUDIO_CONTINUE:
1395 		if (av7110->audiostate.play_state == AUDIO_PAUSED) {
1396 			av7110->audiostate.play_state = AUDIO_PLAYING;
1397 			ret = audcom(av7110, AUDIO_CMD_UNMUTE | AUDIO_CMD_PCM16);
1398 		}
1399 		break;
1400 
1401 	case AUDIO_SELECT_SOURCE:
1402 		av7110->audiostate.stream_source = (audio_stream_source_t) arg;
1403 		break;
1404 
1405 	case AUDIO_SET_MUTE:
1406 	{
1407 		ret = audcom(av7110, arg ? AUDIO_CMD_MUTE : AUDIO_CMD_UNMUTE);
1408 		if (!ret)
1409 			av7110->audiostate.mute_state = (int) arg;
1410 		break;
1411 	}
1412 
1413 	case AUDIO_SET_AV_SYNC:
1414 		av7110->audiostate.AV_sync_state = (int) arg;
1415 		ret = audcom(av7110, arg ? AUDIO_CMD_SYNC_ON : AUDIO_CMD_SYNC_OFF);
1416 		break;
1417 
1418 	case AUDIO_SET_BYPASS_MODE:
1419 		if (FW_VERSION(av7110->arm_app) < 0x2621)
1420 			ret = -EINVAL;
1421 		av7110->audiostate.bypass_mode = (int)arg;
1422 		break;
1423 
1424 	case AUDIO_CHANNEL_SELECT:
1425 		av7110->audiostate.channel_select = (audio_channel_select_t) arg;
1426 		switch(av7110->audiostate.channel_select) {
1427 		case AUDIO_STEREO:
1428 			ret = audcom(av7110, AUDIO_CMD_STEREO);
1429 			if (!ret) {
1430 				if (av7110->adac_type == DVB_ADAC_CRYSTAL)
1431 					i2c_writereg(av7110, 0x20, 0x02, 0x49);
1432 				else if (av7110->adac_type == DVB_ADAC_MSP34x5)
1433 					msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0220);
1434 			}
1435 			break;
1436 		case AUDIO_MONO_LEFT:
1437 			ret = audcom(av7110, AUDIO_CMD_MONO_L);
1438 			if (!ret) {
1439 				if (av7110->adac_type == DVB_ADAC_CRYSTAL)
1440 					i2c_writereg(av7110, 0x20, 0x02, 0x4a);
1441 				else if (av7110->adac_type == DVB_ADAC_MSP34x5)
1442 					msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0200);
1443 			}
1444 			break;
1445 		case AUDIO_MONO_RIGHT:
1446 			ret = audcom(av7110, AUDIO_CMD_MONO_R);
1447 			if (!ret) {
1448 				if (av7110->adac_type == DVB_ADAC_CRYSTAL)
1449 					i2c_writereg(av7110, 0x20, 0x02, 0x45);
1450 				else if (av7110->adac_type == DVB_ADAC_MSP34x5)
1451 					msp_writereg(av7110, MSP_WR_DSP, 0x0008, 0x0210);
1452 			}
1453 			break;
1454 		default:
1455 			ret = -EINVAL;
1456 			break;
1457 		}
1458 		break;
1459 
1460 	case AUDIO_GET_STATUS:
1461 		memcpy(parg, &av7110->audiostate, sizeof(struct audio_status));
1462 		break;
1463 
1464 	case AUDIO_GET_CAPABILITIES:
1465 		if (FW_VERSION(av7110->arm_app) < 0x2621)
1466 			*(unsigned int *)parg = AUDIO_CAP_LPCM | AUDIO_CAP_MP1 | AUDIO_CAP_MP2;
1467 		else
1468 			*(unsigned int *)parg = AUDIO_CAP_LPCM | AUDIO_CAP_DTS | AUDIO_CAP_AC3 |
1469 						AUDIO_CAP_MP1 | AUDIO_CAP_MP2;
1470 		break;
1471 
1472 	case AUDIO_CLEAR_BUFFER:
1473 		dvb_ringbuffer_flush_spinlock_wakeup(&av7110->aout);
1474 		av7110_ipack_reset(&av7110->ipack[0]);
1475 		if (av7110->playing == RP_AV)
1476 			ret = av7110_fw_cmd(av7110, COMTYPE_REC_PLAY,
1477 					    __Play, 2, AV_PES, 0);
1478 		break;
1479 
1480 	case AUDIO_SET_ID:
1481 		break;
1482 
1483 	case AUDIO_SET_MIXER:
1484 	{
1485 		struct audio_mixer *amix = (struct audio_mixer *)parg;
1486 		ret = av7110_set_volume(av7110, amix->volume_left, amix->volume_right);
1487 		break;
1488 	}
1489 
1490 	case AUDIO_SET_STREAMTYPE:
1491 		break;
1492 
1493 	default:
1494 		ret = -ENOIOCTLCMD;
1495 	}
1496 
1497 	mutex_unlock(&av7110->ioctl_mutex);
1498 	return ret;
1499 }
1500 
1501 
dvb_video_open(struct inode * inode,struct file * file)1502 static int dvb_video_open(struct inode *inode, struct file *file)
1503 {
1504 	struct dvb_device *dvbdev = file->private_data;
1505 	struct av7110 *av7110 = dvbdev->priv;
1506 	int err;
1507 
1508 	dprintk(2, "av7110:%p, \n", av7110);
1509 
1510 	if ((err = dvb_generic_open(inode, file)) < 0)
1511 		return err;
1512 
1513 	if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1514 		dvb_ringbuffer_flush_spinlock_wakeup(&av7110->aout);
1515 		dvb_ringbuffer_flush_spinlock_wakeup(&av7110->avout);
1516 		av7110->video_blank = 1;
1517 		av7110->audiostate.AV_sync_state = 1;
1518 		av7110->videostate.stream_source = VIDEO_SOURCE_DEMUX;
1519 
1520 		/*  empty event queue */
1521 		av7110->video_events.eventr = av7110->video_events.eventw = 0;
1522 	}
1523 
1524 	return 0;
1525 }
1526 
dvb_video_release(struct inode * inode,struct file * file)1527 static int dvb_video_release(struct inode *inode, struct file *file)
1528 {
1529 	struct dvb_device *dvbdev = file->private_data;
1530 	struct av7110 *av7110 = dvbdev->priv;
1531 
1532 	dprintk(2, "av7110:%p, \n", av7110);
1533 
1534 	if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1535 		av7110_av_stop(av7110, RP_VIDEO);
1536 	}
1537 
1538 	return dvb_generic_release(inode, file);
1539 }
1540 
dvb_audio_open(struct inode * inode,struct file * file)1541 static int dvb_audio_open(struct inode *inode, struct file *file)
1542 {
1543 	struct dvb_device *dvbdev = file->private_data;
1544 	struct av7110 *av7110 = dvbdev->priv;
1545 	int err = dvb_generic_open(inode, file);
1546 
1547 	dprintk(2, "av7110:%p, \n", av7110);
1548 
1549 	if (err < 0)
1550 		return err;
1551 	dvb_ringbuffer_flush_spinlock_wakeup(&av7110->aout);
1552 	av7110->audiostate.stream_source = AUDIO_SOURCE_DEMUX;
1553 	return 0;
1554 }
1555 
dvb_audio_release(struct inode * inode,struct file * file)1556 static int dvb_audio_release(struct inode *inode, struct file *file)
1557 {
1558 	struct dvb_device *dvbdev = file->private_data;
1559 	struct av7110 *av7110 = dvbdev->priv;
1560 
1561 	dprintk(2, "av7110:%p, \n", av7110);
1562 
1563 	av7110_av_stop(av7110, RP_AUDIO);
1564 	return dvb_generic_release(inode, file);
1565 }
1566 
1567 
1568 
1569 /******************************************************************************
1570  * driver registration
1571  ******************************************************************************/
1572 
1573 static const struct file_operations dvb_video_fops = {
1574 	.owner		= THIS_MODULE,
1575 	.write		= dvb_video_write,
1576 	.unlocked_ioctl	= dvb_generic_ioctl,
1577 	.compat_ioctl	= dvb_generic_ioctl,
1578 	.open		= dvb_video_open,
1579 	.release	= dvb_video_release,
1580 	.poll		= dvb_video_poll,
1581 	.llseek		= noop_llseek,
1582 };
1583 
1584 static struct dvb_device dvbdev_video = {
1585 	.priv		= NULL,
1586 	.users		= 6,
1587 	.readers	= 5,	/* arbitrary */
1588 	.writers	= 1,
1589 	.fops		= &dvb_video_fops,
1590 	.kernel_ioctl	= dvb_video_ioctl,
1591 };
1592 
1593 static const struct file_operations dvb_audio_fops = {
1594 	.owner		= THIS_MODULE,
1595 	.write		= dvb_audio_write,
1596 	.unlocked_ioctl	= dvb_generic_ioctl,
1597 	.compat_ioctl	= dvb_generic_ioctl,
1598 	.open		= dvb_audio_open,
1599 	.release	= dvb_audio_release,
1600 	.poll		= dvb_audio_poll,
1601 	.llseek		= noop_llseek,
1602 };
1603 
1604 static struct dvb_device dvbdev_audio = {
1605 	.priv		= NULL,
1606 	.users		= 1,
1607 	.writers	= 1,
1608 	.fops		= &dvb_audio_fops,
1609 	.kernel_ioctl	= dvb_audio_ioctl,
1610 };
1611 
1612 
av7110_av_register(struct av7110 * av7110)1613 int av7110_av_register(struct av7110 *av7110)
1614 {
1615 	av7110->audiostate.AV_sync_state = 0;
1616 	av7110->audiostate.mute_state = 0;
1617 	av7110->audiostate.play_state = AUDIO_STOPPED;
1618 	av7110->audiostate.stream_source = AUDIO_SOURCE_DEMUX;
1619 	av7110->audiostate.channel_select = AUDIO_STEREO;
1620 	av7110->audiostate.bypass_mode = 0;
1621 
1622 	av7110->videostate.video_blank = 0;
1623 	av7110->videostate.play_state = VIDEO_STOPPED;
1624 	av7110->videostate.stream_source = VIDEO_SOURCE_DEMUX;
1625 	av7110->videostate.video_format = VIDEO_FORMAT_4_3;
1626 	av7110->videostate.display_format = VIDEO_LETTER_BOX;
1627 	av7110->display_ar = VIDEO_FORMAT_4_3;
1628 	av7110->display_panscan = VID_VC_AND_PS_PREF;
1629 
1630 	init_waitqueue_head(&av7110->video_events.wait_queue);
1631 	spin_lock_init(&av7110->video_events.lock);
1632 	av7110->video_events.eventw = av7110->video_events.eventr = 0;
1633 	av7110->video_events.overflow = 0;
1634 	memset(&av7110->video_size, 0, sizeof (video_size_t));
1635 
1636 	dvb_register_device(&av7110->dvb_adapter, &av7110->video_dev,
1637 			    &dvbdev_video, av7110, DVB_DEVICE_VIDEO, 0);
1638 
1639 	dvb_register_device(&av7110->dvb_adapter, &av7110->audio_dev,
1640 			    &dvbdev_audio, av7110, DVB_DEVICE_AUDIO, 0);
1641 
1642 	return 0;
1643 }
1644 
av7110_av_unregister(struct av7110 * av7110)1645 void av7110_av_unregister(struct av7110 *av7110)
1646 {
1647 	dvb_unregister_device(av7110->audio_dev);
1648 	dvb_unregister_device(av7110->video_dev);
1649 }
1650 
av7110_av_init(struct av7110 * av7110)1651 int av7110_av_init(struct av7110 *av7110)
1652 {
1653 	void (*play[])(u8 *, int, void *) = { play_audio_cb, play_video_cb };
1654 	int i, ret;
1655 
1656 	for (i = 0; i < 2; i++) {
1657 		struct ipack *ipack = av7110->ipack + i;
1658 
1659 		ret = av7110_ipack_init(ipack, IPACKS, play[i]);
1660 		if (ret < 0) {
1661 			if (i)
1662 				av7110_ipack_free(--ipack);
1663 			goto out;
1664 		}
1665 		ipack->data = av7110;
1666 	}
1667 
1668 	dvb_ringbuffer_init(&av7110->avout, av7110->iobuf, AVOUTLEN);
1669 	dvb_ringbuffer_init(&av7110->aout, av7110->iobuf + AVOUTLEN, AOUTLEN);
1670 
1671 	av7110->kbuf[0] = (u8 *)(av7110->iobuf + AVOUTLEN + AOUTLEN + BMPLEN);
1672 	av7110->kbuf[1] = av7110->kbuf[0] + 2 * IPACKS;
1673 out:
1674 	return ret;
1675 }
1676 
av7110_av_exit(struct av7110 * av7110)1677 void av7110_av_exit(struct av7110 *av7110)
1678 {
1679 	av7110_ipack_free(&av7110->ipack[0]);
1680 	av7110_ipack_free(&av7110->ipack[1]);
1681 }
1682