Commit | Line | Data |
---|---|---|
1a0adaf3 HV |
1 | /* |
2 | file operation functions | |
3 | Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> | |
4 | Copyright (C) 2004 Chris Kennedy <c@groovy.org> | |
5 | Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include "ivtv-driver.h" | |
23 | #include "ivtv-fileops.h" | |
24 | #include "ivtv-i2c.h" | |
25 | #include "ivtv-queue.h" | |
26 | #include "ivtv-udma.h" | |
27 | #include "ivtv-irq.h" | |
28 | #include "ivtv-vbi.h" | |
29 | #include "ivtv-mailbox.h" | |
33c0fcad | 30 | #include "ivtv-routing.h" |
1a0adaf3 HV |
31 | #include "ivtv-streams.h" |
32 | #include "ivtv-yuv.h" | |
1a0adaf3 | 33 | #include "ivtv-ioctl.h" |
f2100d82 HV |
34 | #include "ivtv-cards.h" |
35 | #include <media/saa7115.h> | |
1a0adaf3 HV |
36 | |
37 | /* This function tries to claim the stream for a specific file descriptor. | |
38 | If no one else is using this stream then the stream is claimed and | |
39 | associated VBI streams are also automatically claimed. | |
40 | Possible error returns: -EBUSY if someone else has claimed | |
41 | the stream or 0 on success. */ | |
95f73c5b | 42 | static int ivtv_claim_stream(struct ivtv_open_id *id, int type) |
1a0adaf3 HV |
43 | { |
44 | struct ivtv *itv = id->itv; | |
45 | struct ivtv_stream *s = &itv->streams[type]; | |
46 | struct ivtv_stream *s_vbi; | |
47 | int vbi_type; | |
48 | ||
49 | if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
50 | /* someone already claimed this stream */ | |
51 | if (s->id == id->open_id) { | |
52 | /* yes, this file descriptor did. So that's OK. */ | |
53 | return 0; | |
54 | } | |
55 | if (s->id == -1 && (type == IVTV_DEC_STREAM_TYPE_VBI || | |
56 | type == IVTV_ENC_STREAM_TYPE_VBI)) { | |
57 | /* VBI is handled already internally, now also assign | |
58 | the file descriptor to this stream for external | |
59 | reading of the stream. */ | |
60 | s->id = id->open_id; | |
61 | IVTV_DEBUG_INFO("Start Read VBI\n"); | |
62 | return 0; | |
63 | } | |
64 | /* someone else is using this stream already */ | |
65 | IVTV_DEBUG_INFO("Stream %d is busy\n", type); | |
66 | return -EBUSY; | |
67 | } | |
68 | s->id = id->open_id; | |
69 | if (type == IVTV_DEC_STREAM_TYPE_VBI) { | |
70 | /* Enable reinsertion interrupt */ | |
71 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
72 | } | |
73 | ||
74 | /* IVTV_DEC_STREAM_TYPE_MPG needs to claim IVTV_DEC_STREAM_TYPE_VBI, | |
75 | IVTV_ENC_STREAM_TYPE_MPG needs to claim IVTV_ENC_STREAM_TYPE_VBI | |
76 | (provided VBI insertion is on and sliced VBI is selected), for all | |
77 | other streams we're done */ | |
78 | if (type == IVTV_DEC_STREAM_TYPE_MPG) { | |
79 | vbi_type = IVTV_DEC_STREAM_TYPE_VBI; | |
80 | } else if (type == IVTV_ENC_STREAM_TYPE_MPG && | |
a8b86435 | 81 | itv->vbi.insert_mpeg && !ivtv_raw_vbi(itv)) { |
1a0adaf3 HV |
82 | vbi_type = IVTV_ENC_STREAM_TYPE_VBI; |
83 | } else { | |
84 | return 0; | |
85 | } | |
86 | s_vbi = &itv->streams[vbi_type]; | |
87 | ||
88 | if (!test_and_set_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags)) { | |
89 | /* Enable reinsertion interrupt */ | |
90 | if (vbi_type == IVTV_DEC_STREAM_TYPE_VBI) | |
91 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
92 | } | |
93 | /* mark that it is used internally */ | |
94 | set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags); | |
95 | return 0; | |
96 | } | |
97 | ||
98 | /* This function releases a previously claimed stream. It will take into | |
99 | account associated VBI streams. */ | |
100 | void ivtv_release_stream(struct ivtv_stream *s) | |
101 | { | |
102 | struct ivtv *itv = s->itv; | |
103 | struct ivtv_stream *s_vbi; | |
104 | ||
105 | s->id = -1; | |
106 | if ((s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type == IVTV_ENC_STREAM_TYPE_VBI) && | |
107 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
108 | /* this stream is still in use internally */ | |
109 | return; | |
110 | } | |
111 | if (!test_and_clear_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
112 | IVTV_DEBUG_WARN("Release stream %s not in use!\n", s->name); | |
113 | return; | |
114 | } | |
115 | ||
116 | ivtv_flush_queues(s); | |
117 | ||
118 | /* disable reinsertion interrupt */ | |
119 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) | |
120 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
121 | ||
122 | /* IVTV_DEC_STREAM_TYPE_MPG needs to release IVTV_DEC_STREAM_TYPE_VBI, | |
123 | IVTV_ENC_STREAM_TYPE_MPG needs to release IVTV_ENC_STREAM_TYPE_VBI, | |
124 | for all other streams we're done */ | |
125 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
126 | s_vbi = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI]; | |
127 | else if (s->type == IVTV_ENC_STREAM_TYPE_MPG) | |
128 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
129 | else | |
130 | return; | |
131 | ||
132 | /* clear internal use flag */ | |
133 | if (!test_and_clear_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags)) { | |
134 | /* was already cleared */ | |
135 | return; | |
136 | } | |
137 | if (s_vbi->id != -1) { | |
138 | /* VBI stream still claimed by a file descriptor */ | |
139 | return; | |
140 | } | |
141 | /* disable reinsertion interrupt */ | |
142 | if (s_vbi->type == IVTV_DEC_STREAM_TYPE_VBI) | |
143 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
144 | clear_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags); | |
145 | ivtv_flush_queues(s_vbi); | |
146 | } | |
147 | ||
148 | static void ivtv_dualwatch(struct ivtv *itv) | |
149 | { | |
150 | struct v4l2_tuner vt; | |
151 | u16 new_bitmap; | |
152 | u16 new_stereo_mode; | |
153 | const u16 stereo_mask = 0x0300; | |
154 | const u16 dual = 0x0200; | |
155 | ||
156 | new_stereo_mode = itv->params.audio_properties & stereo_mask; | |
157 | memset(&vt, 0, sizeof(vt)); | |
158 | ivtv_call_i2c_clients(itv, VIDIOC_G_TUNER, &vt); | |
159 | if (vt.audmode == V4L2_TUNER_MODE_LANG1_LANG2 && (vt.rxsubchans & V4L2_TUNER_SUB_LANG2)) | |
160 | new_stereo_mode = dual; | |
161 | ||
162 | if (new_stereo_mode == itv->dualwatch_stereo_mode) | |
163 | return; | |
164 | ||
165 | new_bitmap = new_stereo_mode | (itv->params.audio_properties & ~stereo_mask); | |
166 | ||
167 | IVTV_DEBUG_INFO("dualwatch: change stereo flag from 0x%x to 0x%x. new audio_bitmask=0x%ux\n", | |
168 | itv->dualwatch_stereo_mode, new_stereo_mode, new_bitmap); | |
169 | ||
170 | if (ivtv_vapi(itv, CX2341X_ENC_SET_AUDIO_PROPERTIES, 1, new_bitmap) == 0) { | |
171 | itv->dualwatch_stereo_mode = new_stereo_mode; | |
172 | return; | |
173 | } | |
174 | IVTV_DEBUG_INFO("dualwatch: changing stereo flag failed\n"); | |
175 | } | |
176 | ||
177 | static void ivtv_update_pgm_info(struct ivtv *itv) | |
178 | { | |
179 | u32 wr_idx = (read_enc(itv->pgm_info_offset) - itv->pgm_info_offset - 4) / 24; | |
180 | int cnt; | |
181 | int i = 0; | |
182 | ||
183 | if (wr_idx >= itv->pgm_info_num) { | |
184 | IVTV_DEBUG_WARN("Invalid PGM index %d (>= %d)\n", wr_idx, itv->pgm_info_num); | |
185 | return; | |
186 | } | |
187 | cnt = (wr_idx + itv->pgm_info_num - itv->pgm_info_write_idx) % itv->pgm_info_num; | |
188 | while (i < cnt) { | |
189 | int idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
190 | struct v4l2_enc_idx_entry *e = itv->pgm_info + idx; | |
191 | u32 addr = itv->pgm_info_offset + 4 + idx * 24; | |
5614b021 HV |
192 | const int mapping[8] = { -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P, -1, |
193 | V4L2_ENC_IDX_FRAME_B, -1, -1, -1 }; | |
194 | // 1=I, 2=P, 4=B | |
1a0adaf3 HV |
195 | |
196 | e->offset = read_enc(addr + 4) + ((u64)read_enc(addr + 8) << 32); | |
197 | if (e->offset > itv->mpg_data_received) { | |
198 | break; | |
199 | } | |
200 | e->offset += itv->vbi_data_inserted; | |
201 | e->length = read_enc(addr); | |
202 | e->pts = read_enc(addr + 16) + ((u64)(read_enc(addr + 20) & 1) << 32); | |
5614b021 | 203 | e->flags = mapping[read_enc(addr + 12) & 7]; |
1a0adaf3 HV |
204 | i++; |
205 | } | |
206 | itv->pgm_info_write_idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
207 | } | |
208 | ||
209 | static struct ivtv_buffer *ivtv_get_buffer(struct ivtv_stream *s, int non_block, int *err) | |
210 | { | |
211 | struct ivtv *itv = s->itv; | |
212 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
213 | struct ivtv_buffer *buf; | |
214 | DEFINE_WAIT(wait); | |
215 | ||
216 | *err = 0; | |
217 | while (1) { | |
218 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) { | |
219 | /* Process pending program info updates and pending VBI data */ | |
220 | ivtv_update_pgm_info(itv); | |
221 | ||
168c626c JL |
222 | if (time_after(jiffies, |
223 | itv->dualwatch_jiffies + | |
224 | msecs_to_jiffies(1000))) { | |
1a0adaf3 HV |
225 | itv->dualwatch_jiffies = jiffies; |
226 | ivtv_dualwatch(itv); | |
227 | } | |
228 | ||
229 | if (test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
230 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
231 | while ((buf = ivtv_dequeue(s_vbi, &s_vbi->q_full))) { | |
232 | /* byteswap and process VBI data */ | |
233 | ivtv_process_vbi_data(itv, buf, s_vbi->dma_pts, s_vbi->type); | |
234 | ivtv_enqueue(s_vbi, buf, &s_vbi->q_free); | |
235 | } | |
236 | } | |
237 | buf = &itv->vbi.sliced_mpeg_buf; | |
238 | if (buf->readpos != buf->bytesused) { | |
239 | return buf; | |
240 | } | |
241 | } | |
242 | ||
243 | /* do we have leftover data? */ | |
244 | buf = ivtv_dequeue(s, &s->q_io); | |
245 | if (buf) | |
246 | return buf; | |
247 | ||
248 | /* do we have new data? */ | |
249 | buf = ivtv_dequeue(s, &s->q_full); | |
250 | if (buf) { | |
f4071b85 | 251 | if ((buf->b_flags & IVTV_F_B_NEED_BUF_SWAP) == 0) |
1a0adaf3 | 252 | return buf; |
f4071b85 | 253 | buf->b_flags &= ~IVTV_F_B_NEED_BUF_SWAP; |
1a0adaf3 HV |
254 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) |
255 | /* byteswap MPG data */ | |
256 | ivtv_buf_swap(buf); | |
257 | else if (s->type != IVTV_DEC_STREAM_TYPE_VBI) { | |
258 | /* byteswap and process VBI data */ | |
259 | ivtv_process_vbi_data(itv, buf, s->dma_pts, s->type); | |
260 | } | |
261 | return buf; | |
262 | } | |
1a0adaf3 HV |
263 | |
264 | /* return if end of stream */ | |
265 | if (s->type != IVTV_DEC_STREAM_TYPE_VBI && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
1a0adaf3 HV |
266 | IVTV_DEBUG_INFO("EOS %s\n", s->name); |
267 | return NULL; | |
268 | } | |
269 | ||
559e196a HV |
270 | /* return if file was opened with O_NONBLOCK */ |
271 | if (non_block) { | |
272 | *err = -EAGAIN; | |
273 | return NULL; | |
274 | } | |
275 | ||
1a0adaf3 HV |
276 | /* wait for more data to arrive */ |
277 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); | |
278 | /* New buffers might have become available before we were added to the waitqueue */ | |
279 | if (!s->q_full.buffers) | |
280 | schedule(); | |
281 | finish_wait(&s->waitq, &wait); | |
282 | if (signal_pending(current)) { | |
283 | /* return if a signal was received */ | |
284 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
285 | *err = -EINTR; | |
286 | return NULL; | |
287 | } | |
288 | } | |
289 | } | |
290 | ||
291 | static void ivtv_setup_sliced_vbi_buf(struct ivtv *itv) | |
292 | { | |
293 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
294 | ||
295 | itv->vbi.sliced_mpeg_buf.buf = itv->vbi.sliced_mpeg_data[idx]; | |
296 | itv->vbi.sliced_mpeg_buf.bytesused = itv->vbi.sliced_mpeg_size[idx]; | |
297 | itv->vbi.sliced_mpeg_buf.readpos = 0; | |
298 | } | |
299 | ||
300 | static size_t ivtv_copy_buf_to_user(struct ivtv_stream *s, struct ivtv_buffer *buf, | |
301 | char __user *ubuf, size_t ucount) | |
302 | { | |
303 | struct ivtv *itv = s->itv; | |
304 | size_t len = buf->bytesused - buf->readpos; | |
305 | ||
306 | if (len > ucount) len = ucount; | |
307 | if (itv->vbi.insert_mpeg && s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
a8b86435 | 308 | !ivtv_raw_vbi(itv) && buf != &itv->vbi.sliced_mpeg_buf) { |
1a0adaf3 HV |
309 | const char *start = buf->buf + buf->readpos; |
310 | const char *p = start + 1; | |
311 | const u8 *q; | |
312 | u8 ch = itv->search_pack_header ? 0xba : 0xe0; | |
313 | int stuffing, i; | |
314 | ||
315 | while (start + len > p && (q = memchr(p, 0, start + len - p))) { | |
316 | p = q + 1; | |
317 | if ((char *)q + 15 >= buf->buf + buf->bytesused || | |
318 | q[1] != 0 || q[2] != 1 || q[3] != ch) { | |
319 | continue; | |
320 | } | |
321 | if (!itv->search_pack_header) { | |
322 | if ((q[6] & 0xc0) != 0x80) | |
323 | continue; | |
324 | if (((q[7] & 0xc0) == 0x80 && (q[9] & 0xf0) == 0x20) || | |
325 | ((q[7] & 0xc0) == 0xc0 && (q[9] & 0xf0) == 0x30)) { | |
326 | ch = 0xba; | |
327 | itv->search_pack_header = 1; | |
328 | p = q + 9; | |
329 | } | |
330 | continue; | |
331 | } | |
332 | stuffing = q[13] & 7; | |
333 | /* all stuffing bytes must be 0xff */ | |
334 | for (i = 0; i < stuffing; i++) | |
335 | if (q[14 + i] != 0xff) | |
336 | break; | |
337 | if (i == stuffing && (q[4] & 0xc4) == 0x44 && (q[12] & 3) == 3 && | |
338 | q[14 + stuffing] == 0 && q[15 + stuffing] == 0 && | |
339 | q[16 + stuffing] == 1) { | |
340 | itv->search_pack_header = 0; | |
341 | len = (char *)q - start; | |
342 | ivtv_setup_sliced_vbi_buf(itv); | |
343 | break; | |
344 | } | |
345 | } | |
346 | } | |
347 | if (copy_to_user(ubuf, (u8 *)buf->buf + buf->readpos, len)) { | |
348 | IVTV_DEBUG_WARN("copy %zd bytes to user failed for %s\n", len, s->name); | |
349 | return -EFAULT; | |
350 | } | |
351 | /*IVTV_INFO("copied %lld %d %d %d %d %d vbi %d\n", itv->mpg_data_received, len, ucount, | |
352 | buf->readpos, buf->bytesused, buf->bytesused - buf->readpos - len, | |
353 | buf == &itv->vbi.sliced_mpeg_buf); */ | |
354 | buf->readpos += len; | |
355 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && buf != &itv->vbi.sliced_mpeg_buf) | |
356 | itv->mpg_data_received += len; | |
357 | return len; | |
358 | } | |
359 | ||
360 | static ssize_t ivtv_read(struct ivtv_stream *s, char __user *ubuf, size_t tot_count, int non_block) | |
361 | { | |
362 | struct ivtv *itv = s->itv; | |
363 | size_t tot_written = 0; | |
364 | int single_frame = 0; | |
365 | ||
366 | if (atomic_read(&itv->capturing) == 0 && s->id == -1) { | |
367 | /* shouldn't happen */ | |
368 | IVTV_DEBUG_WARN("Stream %s not initialized before read\n", s->name); | |
369 | return -EIO; | |
370 | } | |
371 | ||
372 | /* Each VBI buffer is one frame, the v4l2 API says that for VBI the frames should | |
373 | arrive one-by-one, so make sure we never output more than one VBI frame at a time */ | |
374 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI || | |
a8b86435 | 375 | (s->type == IVTV_ENC_STREAM_TYPE_VBI && !ivtv_raw_vbi(itv))) |
1a0adaf3 HV |
376 | single_frame = 1; |
377 | ||
378 | for (;;) { | |
379 | struct ivtv_buffer *buf; | |
380 | int rc; | |
381 | ||
382 | buf = ivtv_get_buffer(s, non_block, &rc); | |
559e196a HV |
383 | /* if there is no data available... */ |
384 | if (buf == NULL) { | |
385 | /* if we got data, then return that regardless */ | |
386 | if (tot_written) | |
387 | break; | |
388 | /* EOS condition */ | |
389 | if (rc == 0) { | |
390 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
391 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
392 | ivtv_release_stream(s); | |
393 | } | |
394 | /* set errno */ | |
1a0adaf3 | 395 | return rc; |
559e196a | 396 | } |
1a0adaf3 HV |
397 | rc = ivtv_copy_buf_to_user(s, buf, ubuf + tot_written, tot_count - tot_written); |
398 | if (buf != &itv->vbi.sliced_mpeg_buf) { | |
399 | ivtv_enqueue(s, buf, (buf->readpos == buf->bytesused) ? &s->q_free : &s->q_io); | |
400 | } | |
401 | else if (buf->readpos == buf->bytesused) { | |
402 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
403 | itv->vbi.sliced_mpeg_size[idx] = 0; | |
404 | itv->vbi.inserted_frame++; | |
405 | itv->vbi_data_inserted += buf->bytesused; | |
406 | } | |
407 | if (rc < 0) | |
408 | return rc; | |
409 | tot_written += rc; | |
410 | ||
411 | if (tot_written == tot_count || single_frame) | |
412 | break; | |
413 | } | |
414 | return tot_written; | |
415 | } | |
416 | ||
417 | static ssize_t ivtv_read_pos(struct ivtv_stream *s, char __user *ubuf, size_t count, | |
418 | loff_t *pos, int non_block) | |
419 | { | |
420 | ssize_t rc = count ? ivtv_read(s, ubuf, count, non_block) : 0; | |
421 | struct ivtv *itv = s->itv; | |
422 | ||
1aa32c2f | 423 | IVTV_DEBUG_HI_FILE("read %zd from %s, got %zd\n", count, s->name, rc); |
1a0adaf3 HV |
424 | if (rc > 0) |
425 | pos += rc; | |
426 | return rc; | |
427 | } | |
428 | ||
429 | int ivtv_start_capture(struct ivtv_open_id *id) | |
430 | { | |
431 | struct ivtv *itv = id->itv; | |
432 | struct ivtv_stream *s = &itv->streams[id->type]; | |
433 | struct ivtv_stream *s_vbi; | |
434 | ||
435 | if (s->type == IVTV_ENC_STREAM_TYPE_RAD || | |
436 | s->type == IVTV_DEC_STREAM_TYPE_MPG || | |
437 | s->type == IVTV_DEC_STREAM_TYPE_YUV || | |
438 | s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
439 | /* you cannot read from these stream types. */ | |
440 | return -EPERM; | |
441 | } | |
442 | ||
443 | /* Try to claim this stream. */ | |
444 | if (ivtv_claim_stream(id, s->type)) | |
445 | return -EBUSY; | |
446 | ||
447 | /* This stream does not need to start capturing */ | |
448 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
449 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
450 | return 0; | |
451 | } | |
452 | ||
453 | /* If capture is already in progress, then we also have to | |
454 | do nothing extra. */ | |
455 | if (test_bit(IVTV_F_S_STREAMOFF, &s->s_flags) || test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
456 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | /* Start VBI capture if required */ | |
461 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
462 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
463 | test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
464 | !test_and_set_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
465 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is claimed | |
466 | automatically when the MPG stream is claimed. | |
467 | We only need to start the VBI capturing. */ | |
468 | if (ivtv_start_v4l2_encode_stream(s_vbi)) { | |
469 | IVTV_DEBUG_WARN("VBI capture start failed\n"); | |
470 | ||
471 | /* Failure, clean up and return an error */ | |
472 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
473 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
474 | /* also releases the associated VBI stream */ | |
475 | ivtv_release_stream(s); | |
476 | return -EIO; | |
477 | } | |
478 | IVTV_DEBUG_INFO("VBI insertion started\n"); | |
479 | } | |
480 | ||
481 | /* Tell the card to start capturing */ | |
482 | if (!ivtv_start_v4l2_encode_stream(s)) { | |
483 | /* We're done */ | |
484 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
485 | /* Resume a possibly paused encoder */ | |
486 | if (test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags)) | |
487 | ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 1); | |
488 | return 0; | |
489 | } | |
490 | ||
491 | /* failure, clean up */ | |
492 | IVTV_DEBUG_WARN("Failed to start capturing for stream %s\n", s->name); | |
493 | ||
494 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is released | |
495 | automatically when the MPG stream is released. | |
496 | We only need to stop the VBI capturing. */ | |
497 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
498 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
499 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
500 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
501 | } | |
502 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
503 | ivtv_release_stream(s); | |
504 | return -EIO; | |
505 | } | |
506 | ||
507 | ssize_t ivtv_v4l2_read(struct file * filp, char __user *buf, size_t count, loff_t * pos) | |
508 | { | |
509 | struct ivtv_open_id *id = filp->private_data; | |
510 | struct ivtv *itv = id->itv; | |
511 | struct ivtv_stream *s = &itv->streams[id->type]; | |
512 | int rc; | |
513 | ||
1aa32c2f | 514 | IVTV_DEBUG_HI_FILE("read %zd bytes from %s\n", count, s->name); |
1a0adaf3 | 515 | |
baa4072d | 516 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 | 517 | rc = ivtv_start_capture(id); |
baa4072d | 518 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
519 | if (rc) |
520 | return rc; | |
521 | return ivtv_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK); | |
522 | } | |
523 | ||
524 | int ivtv_start_decoding(struct ivtv_open_id *id, int speed) | |
525 | { | |
526 | struct ivtv *itv = id->itv; | |
527 | struct ivtv_stream *s = &itv->streams[id->type]; | |
528 | ||
529 | if (atomic_read(&itv->decoding) == 0) { | |
530 | if (ivtv_claim_stream(id, s->type)) { | |
531 | /* someone else is using this stream already */ | |
532 | IVTV_DEBUG_WARN("start decode, stream already claimed\n"); | |
533 | return -EBUSY; | |
534 | } | |
535 | ivtv_start_v4l2_decode_stream(s, 0); | |
536 | } | |
537 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
538 | return ivtv_set_speed(itv, speed); | |
539 | return 0; | |
540 | } | |
541 | ||
542 | ssize_t ivtv_v4l2_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *pos) | |
543 | { | |
544 | struct ivtv_open_id *id = filp->private_data; | |
545 | struct ivtv *itv = id->itv; | |
546 | struct ivtv_stream *s = &itv->streams[id->type]; | |
c240ad00 | 547 | struct yuv_playback_info *yi = &itv->yuv_info; |
1a0adaf3 HV |
548 | struct ivtv_buffer *buf; |
549 | struct ivtv_queue q; | |
550 | int bytes_written = 0; | |
551 | int mode; | |
552 | int rc; | |
553 | DEFINE_WAIT(wait); | |
554 | ||
1aa32c2f | 555 | IVTV_DEBUG_HI_FILE("write %zd bytes to %s\n", count, s->name); |
1a0adaf3 HV |
556 | |
557 | if (s->type != IVTV_DEC_STREAM_TYPE_MPG && | |
558 | s->type != IVTV_DEC_STREAM_TYPE_YUV && | |
559 | s->type != IVTV_DEC_STREAM_TYPE_VOUT) | |
560 | /* not decoder streams */ | |
561 | return -EPERM; | |
562 | ||
563 | /* Try to claim this stream */ | |
564 | if (ivtv_claim_stream(id, s->type)) | |
565 | return -EBUSY; | |
566 | ||
567 | /* This stream does not need to start any decoding */ | |
568 | if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
2f3a9893 HV |
569 | int elems = count / sizeof(struct v4l2_sliced_vbi_data); |
570 | ||
1a0adaf3 | 571 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); |
2f3a9893 HV |
572 | ivtv_write_vbi(itv, (const struct v4l2_sliced_vbi_data *)user_buf, elems); |
573 | return elems * sizeof(struct v4l2_sliced_vbi_data); | |
1a0adaf3 HV |
574 | } |
575 | ||
576 | mode = s->type == IVTV_DEC_STREAM_TYPE_MPG ? OUT_MPG : OUT_YUV; | |
577 | ||
578 | if (ivtv_set_output_mode(itv, mode) != mode) { | |
579 | ivtv_release_stream(s); | |
580 | return -EBUSY; | |
581 | } | |
582 | ivtv_queue_init(&q); | |
583 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
584 | ||
464e9f3a IA |
585 | /* Start decoder (returns 0 if already started) */ |
586 | mutex_lock(&itv->serialize_lock); | |
587 | rc = ivtv_start_decoding(id, itv->speed); | |
588 | mutex_unlock(&itv->serialize_lock); | |
589 | if (rc) { | |
590 | IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name); | |
591 | ||
592 | /* failure, clean up */ | |
593 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
594 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
595 | return rc; | |
596 | } | |
597 | ||
1a0adaf3 | 598 | retry: |
77aded6b IA |
599 | /* If possible, just DMA the entire frame - Check the data transfer size |
600 | since we may get here before the stream has been fully set-up */ | |
601 | if (mode == OUT_YUV && s->q_full.length == 0 && itv->dma_data_req_size) { | |
602 | while (count >= itv->dma_data_req_size) { | |
b0510f8d | 603 | if (!ivtv_yuv_udma_stream_frame (itv, (void __user *)user_buf)) { |
77aded6b IA |
604 | bytes_written += itv->dma_data_req_size; |
605 | user_buf += itv->dma_data_req_size; | |
606 | count -= itv->dma_data_req_size; | |
607 | } else { | |
608 | break; | |
609 | } | |
610 | } | |
611 | if (count == 0) { | |
612 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); | |
613 | return bytes_written; | |
614 | } | |
615 | } | |
616 | ||
1a0adaf3 HV |
617 | for (;;) { |
618 | /* Gather buffers */ | |
619 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_io))) | |
620 | ivtv_enqueue(s, buf, &q); | |
621 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_free))) { | |
622 | ivtv_enqueue(s, buf, &q); | |
623 | } | |
624 | if (q.buffers) | |
625 | break; | |
626 | if (filp->f_flags & O_NONBLOCK) | |
627 | return -EAGAIN; | |
628 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); | |
629 | /* New buffers might have become free before we were added to the waitqueue */ | |
630 | if (!s->q_free.buffers) | |
631 | schedule(); | |
632 | finish_wait(&s->waitq, &wait); | |
633 | if (signal_pending(current)) { | |
634 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
635 | return -EINTR; | |
636 | } | |
637 | } | |
638 | ||
639 | /* copy user data into buffers */ | |
640 | while ((buf = ivtv_dequeue(s, &q))) { | |
c240ad00 IA |
641 | /* yuv is a pain. Don't copy more data than needed for a single |
642 | frame, otherwise we lose sync with the incoming stream */ | |
643 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && | |
644 | yi->stream_size + count > itv->dma_data_req_size) | |
645 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, | |
646 | itv->dma_data_req_size - yi->stream_size); | |
647 | else | |
648 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, count); | |
1a0adaf3 | 649 | |
c240ad00 | 650 | /* Make sure we really got all the user data */ |
1a0adaf3 HV |
651 | if (rc < 0) { |
652 | ivtv_queue_move(s, &q, NULL, &s->q_free, 0); | |
653 | return rc; | |
654 | } | |
655 | user_buf += rc; | |
656 | count -= rc; | |
657 | bytes_written += rc; | |
658 | ||
c240ad00 IA |
659 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
660 | yi->stream_size += rc; | |
661 | /* If we have a complete yuv frame, break loop now */ | |
662 | if (yi->stream_size == itv->dma_data_req_size) { | |
663 | ivtv_enqueue(s, buf, &s->q_full); | |
664 | yi->stream_size = 0; | |
665 | break; | |
666 | } | |
667 | } | |
668 | ||
1a0adaf3 HV |
669 | if (buf->bytesused != s->buf_size) { |
670 | /* incomplete, leave in q_io for next time */ | |
671 | ivtv_enqueue(s, buf, &s->q_io); | |
672 | break; | |
673 | } | |
674 | /* Byteswap MPEG buffer */ | |
675 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
676 | ivtv_buf_swap(buf); | |
677 | ivtv_enqueue(s, buf, &s->q_full); | |
678 | } | |
679 | ||
1a0adaf3 HV |
680 | if (test_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags)) { |
681 | if (s->q_full.length >= itv->dma_data_req_size) { | |
682 | int got_sig; | |
683 | ||
77aded6b IA |
684 | if (mode == OUT_YUV) |
685 | ivtv_yuv_setup_stream_frame(itv); | |
686 | ||
1a0adaf3 HV |
687 | prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE); |
688 | while (!(got_sig = signal_pending(current)) && | |
689 | test_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) { | |
690 | schedule(); | |
691 | } | |
692 | finish_wait(&itv->dma_waitq, &wait); | |
693 | if (got_sig) { | |
694 | IVTV_DEBUG_INFO("User interrupted %s\n", s->name); | |
695 | return -EINTR; | |
696 | } | |
697 | ||
698 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
699 | ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size); | |
700 | ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 1); | |
701 | } | |
702 | } | |
703 | /* more user data is available, wait until buffers become free | |
704 | to transfer the rest. */ | |
705 | if (count && !(filp->f_flags & O_NONBLOCK)) | |
706 | goto retry; | |
1aa32c2f | 707 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); |
1a0adaf3 HV |
708 | return bytes_written; |
709 | } | |
710 | ||
711 | unsigned int ivtv_v4l2_dec_poll(struct file *filp, poll_table *wait) | |
712 | { | |
713 | struct ivtv_open_id *id = filp->private_data; | |
714 | struct ivtv *itv = id->itv; | |
715 | struct ivtv_stream *s = &itv->streams[id->type]; | |
716 | int res = 0; | |
717 | ||
718 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 719 | IVTV_DEBUG_HI_FILE("Decoder poll\n"); |
1a0adaf3 HV |
720 | poll_wait(filp, &s->waitq, wait); |
721 | ||
722 | set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags); | |
723 | if (test_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags) || | |
724 | test_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags)) | |
725 | res = POLLPRI; | |
726 | ||
727 | /* Allow write if buffers are available for writing */ | |
728 | if (s->q_free.buffers) | |
729 | res |= POLLOUT | POLLWRNORM; | |
730 | return res; | |
731 | } | |
732 | ||
733 | unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait) | |
734 | { | |
735 | struct ivtv_open_id *id = filp->private_data; | |
736 | struct ivtv *itv = id->itv; | |
737 | struct ivtv_stream *s = &itv->streams[id->type]; | |
738 | int eof = test_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
739 | ||
740 | /* Start a capture if there is none */ | |
741 | if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
baa4072d | 742 | int rc; |
1a0adaf3 | 743 | |
baa4072d HV |
744 | mutex_lock(&itv->serialize_lock); |
745 | rc = ivtv_start_capture(id); | |
746 | mutex_unlock(&itv->serialize_lock); | |
1a0adaf3 HV |
747 | if (rc) { |
748 | IVTV_DEBUG_INFO("Could not start capture for %s (%d)\n", | |
749 | s->name, rc); | |
750 | return POLLERR; | |
751 | } | |
1aa32c2f | 752 | IVTV_DEBUG_FILE("Encoder poll started capture\n"); |
1a0adaf3 HV |
753 | } |
754 | ||
755 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 756 | IVTV_DEBUG_HI_FILE("Encoder poll\n"); |
1a0adaf3 HV |
757 | poll_wait(filp, &s->waitq, wait); |
758 | ||
16928be3 | 759 | if (s->q_full.length || s->q_io.length) |
1a0adaf3 | 760 | return POLLIN | POLLRDNORM; |
16928be3 HV |
761 | if (eof) |
762 | return POLLHUP; | |
1a0adaf3 HV |
763 | return 0; |
764 | } | |
765 | ||
766 | void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end) | |
767 | { | |
768 | struct ivtv *itv = id->itv; | |
769 | struct ivtv_stream *s = &itv->streams[id->type]; | |
770 | ||
1aa32c2f | 771 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 HV |
772 | |
773 | /* 'Unclaim' this stream */ | |
774 | ||
775 | /* Stop capturing */ | |
776 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
777 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
778 | ||
779 | IVTV_DEBUG_INFO("close stopping capture\n"); | |
780 | /* Special case: a running VBI capture for VBI insertion | |
781 | in the mpeg stream. Need to stop that too. */ | |
782 | if (id->type == IVTV_ENC_STREAM_TYPE_MPG && | |
783 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags) && | |
784 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
785 | IVTV_DEBUG_INFO("close stopping embedded VBI capture\n"); | |
786 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
787 | } | |
788 | if ((id->type == IVTV_DEC_STREAM_TYPE_VBI || | |
789 | id->type == IVTV_ENC_STREAM_TYPE_VBI) && | |
790 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
791 | /* Also used internally, don't stop capturing */ | |
792 | s->id = -1; | |
793 | } | |
794 | else { | |
795 | ivtv_stop_v4l2_encode_stream(s, gop_end); | |
796 | } | |
797 | } | |
559e196a HV |
798 | if (!gop_end) { |
799 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
800 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
801 | ivtv_release_stream(s); | |
802 | } | |
1a0adaf3 HV |
803 | } |
804 | ||
31ec1356 | 805 | static void ivtv_stop_decoding(struct ivtv_open_id *id, int flags, u64 pts) |
1a0adaf3 HV |
806 | { |
807 | struct ivtv *itv = id->itv; | |
808 | struct ivtv_stream *s = &itv->streams[id->type]; | |
809 | ||
1aa32c2f | 810 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 HV |
811 | |
812 | /* Stop decoding */ | |
813 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
814 | IVTV_DEBUG_INFO("close stopping decode\n"); | |
815 | ||
816 | ivtv_stop_v4l2_decode_stream(s, flags, pts); | |
ad8ff0f1 | 817 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
818 | } |
819 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
820 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
821 | if (id->type == IVTV_DEC_STREAM_TYPE_YUV && test_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags)) { | |
822 | /* Restore registers we've changed & clean up any mess we've made */ | |
823 | ivtv_yuv_close(itv); | |
824 | } | |
ad8ff0f1 | 825 | if (itv->output_mode == OUT_UDMA_YUV && id->yuv_frames) |
cb50f548 | 826 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
827 | |
828 | itv->speed = 0; | |
ac425144 | 829 | clear_bit(IVTV_F_I_DEC_PAUSED, &itv->i_flags); |
1a0adaf3 HV |
830 | ivtv_release_stream(s); |
831 | } | |
832 | ||
833 | int ivtv_v4l2_close(struct inode *inode, struct file *filp) | |
834 | { | |
835 | struct ivtv_open_id *id = filp->private_data; | |
836 | struct ivtv *itv = id->itv; | |
837 | struct ivtv_stream *s = &itv->streams[id->type]; | |
838 | ||
1aa32c2f | 839 | IVTV_DEBUG_FILE("close %s\n", s->name); |
1a0adaf3 | 840 | |
d46c17d7 HV |
841 | v4l2_prio_close(&itv->prio, &id->prio); |
842 | ||
1a0adaf3 HV |
843 | /* Easy case first: this stream was never claimed by us */ |
844 | if (s->id != id->open_id) { | |
845 | kfree(id); | |
846 | return 0; | |
847 | } | |
848 | ||
849 | /* 'Unclaim' this stream */ | |
850 | ||
851 | /* Stop radio */ | |
baa4072d | 852 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
853 | if (id->type == IVTV_ENC_STREAM_TYPE_RAD) { |
854 | /* Closing radio device, return to TV mode */ | |
855 | ivtv_mute(itv); | |
856 | /* Mark that the radio is no longer in use */ | |
857 | clear_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
858 | /* Switch tuner to TV */ | |
859 | ivtv_call_i2c_clients(itv, VIDIOC_S_STD, &itv->std); | |
860 | /* Select correct audio input (i.e. TV tuner or Line in) */ | |
861 | ivtv_audio_set_io(itv); | |
f2100d82 HV |
862 | if (itv->hw_flags & IVTV_HW_SAA711X) |
863 | { | |
864 | struct v4l2_crystal_freq crystal_freq; | |
865 | crystal_freq.freq = SAA7115_FREQ_32_11_MHZ; | |
866 | crystal_freq.flags = 0; | |
867 | ivtv_saa7115(itv, VIDIOC_INT_S_CRYSTAL_FREQ, &crystal_freq); | |
868 | } | |
2f7362ef HV |
869 | if (atomic_read(&itv->capturing) > 0) { |
870 | /* Undo video mute */ | |
871 | ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, | |
872 | itv->params.video_mute | (itv->params.video_mute_yuv << 8)); | |
873 | } | |
1a0adaf3 HV |
874 | /* Done! Unmute and continue. */ |
875 | ivtv_unmute(itv); | |
876 | ivtv_release_stream(s); | |
877 | } else if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) { | |
5a338c38 HV |
878 | struct ivtv_stream *s_vout = &itv->streams[IVTV_DEC_STREAM_TYPE_VOUT]; |
879 | ||
1a0adaf3 | 880 | ivtv_stop_decoding(id, VIDEO_CMD_STOP_TO_BLACK | VIDEO_CMD_STOP_IMMEDIATELY, 0); |
5a338c38 HV |
881 | |
882 | /* If all output streams are closed, and if the user doesn't have | |
2f3a9893 | 883 | IVTV_DEC_STREAM_TYPE_VOUT open, then disable CC on TV-out. */ |
5a338c38 | 884 | if (itv->output_mode == OUT_NONE && !test_bit(IVTV_F_S_APPL_IO, &s_vout->s_flags)) { |
2f3a9893 HV |
885 | /* disable CC on TV-out */ |
886 | ivtv_disable_cc(itv); | |
5a338c38 | 887 | } |
1a0adaf3 HV |
888 | } else { |
889 | ivtv_stop_capture(id, 0); | |
890 | } | |
891 | kfree(id); | |
baa4072d | 892 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
893 | return 0; |
894 | } | |
895 | ||
baa4072d | 896 | static int ivtv_serialized_open(struct ivtv_stream *s, struct file *filp) |
1a0adaf3 | 897 | { |
baa4072d | 898 | struct ivtv *itv = s->itv; |
1a0adaf3 | 899 | struct ivtv_open_id *item; |
1a0adaf3 | 900 | |
1aa32c2f | 901 | IVTV_DEBUG_FILE("open %s\n", s->name); |
c976bc82 | 902 | |
baa4072d | 903 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG && |
1a0adaf3 HV |
904 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_YUV].s_flags)) |
905 | return -EBUSY; | |
906 | ||
baa4072d | 907 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && |
1a0adaf3 HV |
908 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_MPG].s_flags)) |
909 | return -EBUSY; | |
910 | ||
baa4072d | 911 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 HV |
912 | if (read_reg(0x82c) == 0) { |
913 | IVTV_ERR("Tried to open YUV output device but need to send data to mpeg decoder before it can be used\n"); | |
914 | /* return -ENODEV; */ | |
915 | } | |
916 | ivtv_udma_alloc(itv); | |
917 | } | |
918 | ||
919 | /* Allocate memory */ | |
920 | item = kmalloc(sizeof(struct ivtv_open_id), GFP_KERNEL); | |
921 | if (NULL == item) { | |
922 | IVTV_DEBUG_WARN("nomem on v4l2 open\n"); | |
923 | return -ENOMEM; | |
924 | } | |
925 | item->itv = itv; | |
baa4072d | 926 | item->type = s->type; |
d46c17d7 | 927 | v4l2_prio_open(&itv->prio, &item->prio); |
1a0adaf3 HV |
928 | |
929 | item->open_id = itv->open_id++; | |
930 | filp->private_data = item; | |
931 | ||
932 | if (item->type == IVTV_ENC_STREAM_TYPE_RAD) { | |
933 | /* Try to claim this stream */ | |
934 | if (ivtv_claim_stream(item, item->type)) { | |
935 | /* No, it's already in use */ | |
936 | kfree(item); | |
937 | return -EBUSY; | |
938 | } | |
939 | ||
3562c43b HV |
940 | if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) { |
941 | if (atomic_read(&itv->capturing) > 0) { | |
942 | /* switching to radio while capture is | |
943 | in progress is not polite */ | |
af3420b4 | 944 | ivtv_release_stream(s); |
3562c43b HV |
945 | kfree(item); |
946 | return -EBUSY; | |
947 | } | |
948 | } | |
949 | /* Mark that the radio is being used. */ | |
950 | set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
1a0adaf3 HV |
951 | /* We have the radio */ |
952 | ivtv_mute(itv); | |
953 | /* Switch tuner to radio */ | |
954 | ivtv_call_i2c_clients(itv, AUDC_SET_RADIO, NULL); | |
1a0adaf3 HV |
955 | /* Select the correct audio input (i.e. radio tuner) */ |
956 | ivtv_audio_set_io(itv); | |
f2100d82 HV |
957 | if (itv->hw_flags & IVTV_HW_SAA711X) |
958 | { | |
959 | struct v4l2_crystal_freq crystal_freq; | |
960 | crystal_freq.freq = SAA7115_FREQ_32_11_MHZ; | |
961 | crystal_freq.flags = SAA7115_FREQ_FL_APLL; | |
962 | ivtv_saa7115(itv, VIDIOC_INT_S_CRYSTAL_FREQ, &crystal_freq); | |
963 | } | |
1a0adaf3 HV |
964 | /* Done! Unmute and continue. */ |
965 | ivtv_unmute(itv); | |
966 | } | |
967 | ||
968 | /* YUV or MPG Decoding Mode? */ | |
c240ad00 | 969 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) { |
1a0adaf3 | 970 | clear_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
c240ad00 | 971 | } else if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 | 972 | set_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
c240ad00 IA |
973 | /* For yuv, we need to know the dma size before we start */ |
974 | itv->dma_data_req_size = | |
77aded6b | 975 | 1080 * ((itv->yuv_info.v4l2_src_h + 31) & ~31); |
c240ad00 IA |
976 | itv->yuv_info.stream_size = 0; |
977 | } | |
baa4072d HV |
978 | return 0; |
979 | } | |
980 | ||
981 | int ivtv_v4l2_open(struct inode *inode, struct file *filp) | |
982 | { | |
983 | int res, x, y = 0; | |
984 | struct ivtv *itv = NULL; | |
985 | struct ivtv_stream *s = NULL; | |
986 | int minor = iminor(inode); | |
987 | ||
988 | /* Find which card this open was on */ | |
989 | spin_lock(&ivtv_cards_lock); | |
990 | for (x = 0; itv == NULL && x < ivtv_cards_active; x++) { | |
07c87a83 AW |
991 | if (ivtv_cards[x] == NULL) |
992 | continue; | |
baa4072d HV |
993 | /* find out which stream this open was on */ |
994 | for (y = 0; y < IVTV_MAX_STREAMS; y++) { | |
995 | s = &ivtv_cards[x]->streams[y]; | |
996 | if (s->v4l2dev && s->v4l2dev->minor == minor) { | |
997 | itv = ivtv_cards[x]; | |
998 | break; | |
999 | } | |
1000 | } | |
1a0adaf3 | 1001 | } |
baa4072d | 1002 | spin_unlock(&ivtv_cards_lock); |
1a0adaf3 | 1003 | |
baa4072d HV |
1004 | if (itv == NULL) { |
1005 | /* Couldn't find a device registered | |
1006 | on that minor, shouldn't happen! */ | |
7e7f05ca | 1007 | printk(KERN_WARNING "No ivtv device found on minor %d\n", minor); |
baa4072d HV |
1008 | return -ENXIO; |
1009 | } | |
1010 | ||
1011 | mutex_lock(&itv->serialize_lock); | |
1012 | if (ivtv_init_on_first_open(itv)) { | |
1013 | IVTV_ERR("Failed to initialize on minor %d\n", minor); | |
1014 | mutex_unlock(&itv->serialize_lock); | |
1015 | return -ENXIO; | |
1016 | } | |
1017 | res = ivtv_serialized_open(s, filp); | |
1018 | mutex_unlock(&itv->serialize_lock); | |
1019 | return res; | |
1a0adaf3 HV |
1020 | } |
1021 | ||
1022 | void ivtv_mute(struct ivtv *itv) | |
1023 | { | |
1a0adaf3 HV |
1024 | if (atomic_read(&itv->capturing)) |
1025 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 1); | |
1a0adaf3 HV |
1026 | IVTV_DEBUG_INFO("Mute\n"); |
1027 | } | |
1028 | ||
1029 | void ivtv_unmute(struct ivtv *itv) | |
1030 | { | |
1a0adaf3 | 1031 | if (atomic_read(&itv->capturing)) { |
3562c43b | 1032 | ivtv_msleep_timeout(100, 0); |
1a0adaf3 HV |
1033 | ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); |
1034 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 0); | |
1035 | } | |
1a0adaf3 HV |
1036 | IVTV_DEBUG_INFO("Unmute\n"); |
1037 | } |