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 | 34 | #include "ivtv-cards.h" |
914610e8 | 35 | #include "ivtv-firmware.h" |
09250193 | 36 | #include <media/v4l2-event.h> |
f2100d82 | 37 | #include <media/saa7115.h> |
1a0adaf3 HV |
38 | |
39 | /* This function tries to claim the stream for a specific file descriptor. | |
40 | If no one else is using this stream then the stream is claimed and | |
41 | associated VBI streams are also automatically claimed. | |
42 | Possible error returns: -EBUSY if someone else has claimed | |
43 | the stream or 0 on success. */ | |
95f73c5b | 44 | static int ivtv_claim_stream(struct ivtv_open_id *id, int type) |
1a0adaf3 HV |
45 | { |
46 | struct ivtv *itv = id->itv; | |
47 | struct ivtv_stream *s = &itv->streams[type]; | |
48 | struct ivtv_stream *s_vbi; | |
49 | int vbi_type; | |
50 | ||
51 | if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
52 | /* someone already claimed this stream */ | |
61bb725e | 53 | if (s->fh == &id->fh) { |
1a0adaf3 HV |
54 | /* yes, this file descriptor did. So that's OK. */ |
55 | return 0; | |
56 | } | |
61bb725e | 57 | if (s->fh == NULL && (type == IVTV_DEC_STREAM_TYPE_VBI || |
1a0adaf3 HV |
58 | type == IVTV_ENC_STREAM_TYPE_VBI)) { |
59 | /* VBI is handled already internally, now also assign | |
60 | the file descriptor to this stream for external | |
61 | reading of the stream. */ | |
61bb725e | 62 | s->fh = &id->fh; |
1a0adaf3 HV |
63 | IVTV_DEBUG_INFO("Start Read VBI\n"); |
64 | return 0; | |
65 | } | |
66 | /* someone else is using this stream already */ | |
67 | IVTV_DEBUG_INFO("Stream %d is busy\n", type); | |
68 | return -EBUSY; | |
69 | } | |
61bb725e | 70 | s->fh = &id->fh; |
1a0adaf3 HV |
71 | if (type == IVTV_DEC_STREAM_TYPE_VBI) { |
72 | /* Enable reinsertion interrupt */ | |
73 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
74 | } | |
75 | ||
76 | /* IVTV_DEC_STREAM_TYPE_MPG needs to claim IVTV_DEC_STREAM_TYPE_VBI, | |
77 | IVTV_ENC_STREAM_TYPE_MPG needs to claim IVTV_ENC_STREAM_TYPE_VBI | |
78 | (provided VBI insertion is on and sliced VBI is selected), for all | |
79 | other streams we're done */ | |
80 | if (type == IVTV_DEC_STREAM_TYPE_MPG) { | |
81 | vbi_type = IVTV_DEC_STREAM_TYPE_VBI; | |
82 | } else if (type == IVTV_ENC_STREAM_TYPE_MPG && | |
a8b86435 | 83 | itv->vbi.insert_mpeg && !ivtv_raw_vbi(itv)) { |
1a0adaf3 HV |
84 | vbi_type = IVTV_ENC_STREAM_TYPE_VBI; |
85 | } else { | |
86 | return 0; | |
87 | } | |
88 | s_vbi = &itv->streams[vbi_type]; | |
89 | ||
90 | if (!test_and_set_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags)) { | |
91 | /* Enable reinsertion interrupt */ | |
92 | if (vbi_type == IVTV_DEC_STREAM_TYPE_VBI) | |
93 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
94 | } | |
95 | /* mark that it is used internally */ | |
96 | set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | /* This function releases a previously claimed stream. It will take into | |
101 | account associated VBI streams. */ | |
102 | void ivtv_release_stream(struct ivtv_stream *s) | |
103 | { | |
104 | struct ivtv *itv = s->itv; | |
105 | struct ivtv_stream *s_vbi; | |
106 | ||
61bb725e | 107 | s->fh = NULL; |
1a0adaf3 HV |
108 | if ((s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type == IVTV_ENC_STREAM_TYPE_VBI) && |
109 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
110 | /* this stream is still in use internally */ | |
111 | return; | |
112 | } | |
113 | if (!test_and_clear_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
114 | IVTV_DEBUG_WARN("Release stream %s not in use!\n", s->name); | |
115 | return; | |
116 | } | |
117 | ||
118 | ivtv_flush_queues(s); | |
119 | ||
120 | /* disable reinsertion interrupt */ | |
121 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) | |
122 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
123 | ||
124 | /* IVTV_DEC_STREAM_TYPE_MPG needs to release IVTV_DEC_STREAM_TYPE_VBI, | |
125 | IVTV_ENC_STREAM_TYPE_MPG needs to release IVTV_ENC_STREAM_TYPE_VBI, | |
126 | for all other streams we're done */ | |
127 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
128 | s_vbi = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI]; | |
129 | else if (s->type == IVTV_ENC_STREAM_TYPE_MPG) | |
130 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
131 | else | |
132 | return; | |
133 | ||
134 | /* clear internal use flag */ | |
135 | if (!test_and_clear_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags)) { | |
136 | /* was already cleared */ | |
137 | return; | |
138 | } | |
61bb725e | 139 | if (s_vbi->fh) { |
1a0adaf3 HV |
140 | /* VBI stream still claimed by a file descriptor */ |
141 | return; | |
142 | } | |
143 | /* disable reinsertion interrupt */ | |
144 | if (s_vbi->type == IVTV_DEC_STREAM_TYPE_VBI) | |
145 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
146 | clear_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags); | |
147 | ivtv_flush_queues(s_vbi); | |
148 | } | |
149 | ||
150 | static void ivtv_dualwatch(struct ivtv *itv) | |
151 | { | |
152 | struct v4l2_tuner vt; | |
0d82fe80 | 153 | u32 new_stereo_mode; |
f7b80e69 | 154 | const u32 dual = 0x02; |
1a0adaf3 | 155 | |
f7b80e69 | 156 | new_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode); |
1a0adaf3 | 157 | memset(&vt, 0, sizeof(vt)); |
67ec09fd | 158 | ivtv_call_all(itv, tuner, g_tuner, &vt); |
1a0adaf3 HV |
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 | ||
f7b80e69 HV |
165 | IVTV_DEBUG_INFO("dualwatch: change stereo flag from 0x%x to 0x%x.\n", |
166 | itv->dualwatch_stereo_mode, new_stereo_mode); | |
167 | if (v4l2_ctrl_s_ctrl(itv->cxhdl.audio_mode, new_stereo_mode)) | |
168 | IVTV_DEBUG_INFO("dualwatch: changing stereo flag failed\n"); | |
1a0adaf3 HV |
169 | } |
170 | ||
171 | static void ivtv_update_pgm_info(struct ivtv *itv) | |
172 | { | |
173 | u32 wr_idx = (read_enc(itv->pgm_info_offset) - itv->pgm_info_offset - 4) / 24; | |
174 | int cnt; | |
175 | int i = 0; | |
176 | ||
177 | if (wr_idx >= itv->pgm_info_num) { | |
178 | IVTV_DEBUG_WARN("Invalid PGM index %d (>= %d)\n", wr_idx, itv->pgm_info_num); | |
179 | return; | |
180 | } | |
181 | cnt = (wr_idx + itv->pgm_info_num - itv->pgm_info_write_idx) % itv->pgm_info_num; | |
182 | while (i < cnt) { | |
183 | int idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
184 | struct v4l2_enc_idx_entry *e = itv->pgm_info + idx; | |
185 | u32 addr = itv->pgm_info_offset + 4 + idx * 24; | |
5614b021 HV |
186 | const int mapping[8] = { -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P, -1, |
187 | V4L2_ENC_IDX_FRAME_B, -1, -1, -1 }; | |
188 | // 1=I, 2=P, 4=B | |
1a0adaf3 HV |
189 | |
190 | e->offset = read_enc(addr + 4) + ((u64)read_enc(addr + 8) << 32); | |
191 | if (e->offset > itv->mpg_data_received) { | |
192 | break; | |
193 | } | |
194 | e->offset += itv->vbi_data_inserted; | |
195 | e->length = read_enc(addr); | |
196 | e->pts = read_enc(addr + 16) + ((u64)(read_enc(addr + 20) & 1) << 32); | |
5614b021 | 197 | e->flags = mapping[read_enc(addr + 12) & 7]; |
1a0adaf3 HV |
198 | i++; |
199 | } | |
200 | itv->pgm_info_write_idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
201 | } | |
202 | ||
203 | static struct ivtv_buffer *ivtv_get_buffer(struct ivtv_stream *s, int non_block, int *err) | |
204 | { | |
205 | struct ivtv *itv = s->itv; | |
206 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
207 | struct ivtv_buffer *buf; | |
208 | DEFINE_WAIT(wait); | |
209 | ||
210 | *err = 0; | |
211 | while (1) { | |
212 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) { | |
213 | /* Process pending program info updates and pending VBI data */ | |
214 | ivtv_update_pgm_info(itv); | |
215 | ||
168c626c JL |
216 | if (time_after(jiffies, |
217 | itv->dualwatch_jiffies + | |
218 | msecs_to_jiffies(1000))) { | |
1a0adaf3 HV |
219 | itv->dualwatch_jiffies = jiffies; |
220 | ivtv_dualwatch(itv); | |
221 | } | |
222 | ||
223 | if (test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
224 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
225 | while ((buf = ivtv_dequeue(s_vbi, &s_vbi->q_full))) { | |
226 | /* byteswap and process VBI data */ | |
227 | ivtv_process_vbi_data(itv, buf, s_vbi->dma_pts, s_vbi->type); | |
228 | ivtv_enqueue(s_vbi, buf, &s_vbi->q_free); | |
229 | } | |
230 | } | |
231 | buf = &itv->vbi.sliced_mpeg_buf; | |
232 | if (buf->readpos != buf->bytesused) { | |
233 | return buf; | |
234 | } | |
235 | } | |
236 | ||
237 | /* do we have leftover data? */ | |
238 | buf = ivtv_dequeue(s, &s->q_io); | |
239 | if (buf) | |
240 | return buf; | |
241 | ||
242 | /* do we have new data? */ | |
243 | buf = ivtv_dequeue(s, &s->q_full); | |
244 | if (buf) { | |
f4071b85 | 245 | if ((buf->b_flags & IVTV_F_B_NEED_BUF_SWAP) == 0) |
1a0adaf3 | 246 | return buf; |
f4071b85 | 247 | buf->b_flags &= ~IVTV_F_B_NEED_BUF_SWAP; |
1a0adaf3 HV |
248 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) |
249 | /* byteswap MPG data */ | |
250 | ivtv_buf_swap(buf); | |
251 | else if (s->type != IVTV_DEC_STREAM_TYPE_VBI) { | |
252 | /* byteswap and process VBI data */ | |
253 | ivtv_process_vbi_data(itv, buf, s->dma_pts, s->type); | |
254 | } | |
255 | return buf; | |
256 | } | |
1a0adaf3 HV |
257 | |
258 | /* return if end of stream */ | |
259 | if (s->type != IVTV_DEC_STREAM_TYPE_VBI && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
1a0adaf3 HV |
260 | IVTV_DEBUG_INFO("EOS %s\n", s->name); |
261 | return NULL; | |
262 | } | |
263 | ||
559e196a HV |
264 | /* return if file was opened with O_NONBLOCK */ |
265 | if (non_block) { | |
266 | *err = -EAGAIN; | |
267 | return NULL; | |
268 | } | |
269 | ||
1a0adaf3 | 270 | /* wait for more data to arrive */ |
cdc03781 | 271 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
272 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); |
273 | /* New buffers might have become available before we were added to the waitqueue */ | |
274 | if (!s->q_full.buffers) | |
275 | schedule(); | |
276 | finish_wait(&s->waitq, &wait); | |
cdc03781 | 277 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
278 | if (signal_pending(current)) { |
279 | /* return if a signal was received */ | |
280 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
281 | *err = -EINTR; | |
282 | return NULL; | |
283 | } | |
284 | } | |
285 | } | |
286 | ||
287 | static void ivtv_setup_sliced_vbi_buf(struct ivtv *itv) | |
288 | { | |
289 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
290 | ||
291 | itv->vbi.sliced_mpeg_buf.buf = itv->vbi.sliced_mpeg_data[idx]; | |
292 | itv->vbi.sliced_mpeg_buf.bytesused = itv->vbi.sliced_mpeg_size[idx]; | |
293 | itv->vbi.sliced_mpeg_buf.readpos = 0; | |
294 | } | |
295 | ||
296 | static size_t ivtv_copy_buf_to_user(struct ivtv_stream *s, struct ivtv_buffer *buf, | |
297 | char __user *ubuf, size_t ucount) | |
298 | { | |
299 | struct ivtv *itv = s->itv; | |
300 | size_t len = buf->bytesused - buf->readpos; | |
301 | ||
302 | if (len > ucount) len = ucount; | |
303 | if (itv->vbi.insert_mpeg && s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
a8b86435 | 304 | !ivtv_raw_vbi(itv) && buf != &itv->vbi.sliced_mpeg_buf) { |
1a0adaf3 HV |
305 | const char *start = buf->buf + buf->readpos; |
306 | const char *p = start + 1; | |
307 | const u8 *q; | |
308 | u8 ch = itv->search_pack_header ? 0xba : 0xe0; | |
309 | int stuffing, i; | |
310 | ||
311 | while (start + len > p && (q = memchr(p, 0, start + len - p))) { | |
312 | p = q + 1; | |
313 | if ((char *)q + 15 >= buf->buf + buf->bytesused || | |
314 | q[1] != 0 || q[2] != 1 || q[3] != ch) { | |
315 | continue; | |
316 | } | |
317 | if (!itv->search_pack_header) { | |
318 | if ((q[6] & 0xc0) != 0x80) | |
319 | continue; | |
320 | if (((q[7] & 0xc0) == 0x80 && (q[9] & 0xf0) == 0x20) || | |
321 | ((q[7] & 0xc0) == 0xc0 && (q[9] & 0xf0) == 0x30)) { | |
322 | ch = 0xba; | |
323 | itv->search_pack_header = 1; | |
324 | p = q + 9; | |
325 | } | |
326 | continue; | |
327 | } | |
328 | stuffing = q[13] & 7; | |
329 | /* all stuffing bytes must be 0xff */ | |
330 | for (i = 0; i < stuffing; i++) | |
331 | if (q[14 + i] != 0xff) | |
332 | break; | |
333 | if (i == stuffing && (q[4] & 0xc4) == 0x44 && (q[12] & 3) == 3 && | |
334 | q[14 + stuffing] == 0 && q[15 + stuffing] == 0 && | |
335 | q[16 + stuffing] == 1) { | |
336 | itv->search_pack_header = 0; | |
337 | len = (char *)q - start; | |
338 | ivtv_setup_sliced_vbi_buf(itv); | |
339 | break; | |
340 | } | |
341 | } | |
342 | } | |
343 | if (copy_to_user(ubuf, (u8 *)buf->buf + buf->readpos, len)) { | |
344 | IVTV_DEBUG_WARN("copy %zd bytes to user failed for %s\n", len, s->name); | |
345 | return -EFAULT; | |
346 | } | |
347 | /*IVTV_INFO("copied %lld %d %d %d %d %d vbi %d\n", itv->mpg_data_received, len, ucount, | |
348 | buf->readpos, buf->bytesused, buf->bytesused - buf->readpos - len, | |
349 | buf == &itv->vbi.sliced_mpeg_buf); */ | |
350 | buf->readpos += len; | |
351 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && buf != &itv->vbi.sliced_mpeg_buf) | |
352 | itv->mpg_data_received += len; | |
353 | return len; | |
354 | } | |
355 | ||
356 | static ssize_t ivtv_read(struct ivtv_stream *s, char __user *ubuf, size_t tot_count, int non_block) | |
357 | { | |
358 | struct ivtv *itv = s->itv; | |
359 | size_t tot_written = 0; | |
360 | int single_frame = 0; | |
361 | ||
61bb725e | 362 | if (atomic_read(&itv->capturing) == 0 && s->fh == NULL) { |
1a0adaf3 HV |
363 | /* shouldn't happen */ |
364 | IVTV_DEBUG_WARN("Stream %s not initialized before read\n", s->name); | |
365 | return -EIO; | |
366 | } | |
367 | ||
368 | /* Each VBI buffer is one frame, the v4l2 API says that for VBI the frames should | |
369 | arrive one-by-one, so make sure we never output more than one VBI frame at a time */ | |
370 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI || | |
a8b86435 | 371 | (s->type == IVTV_ENC_STREAM_TYPE_VBI && !ivtv_raw_vbi(itv))) |
1a0adaf3 HV |
372 | single_frame = 1; |
373 | ||
374 | for (;;) { | |
375 | struct ivtv_buffer *buf; | |
376 | int rc; | |
377 | ||
378 | buf = ivtv_get_buffer(s, non_block, &rc); | |
559e196a HV |
379 | /* if there is no data available... */ |
380 | if (buf == NULL) { | |
381 | /* if we got data, then return that regardless */ | |
382 | if (tot_written) | |
383 | break; | |
384 | /* EOS condition */ | |
385 | if (rc == 0) { | |
386 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
387 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
388 | ivtv_release_stream(s); | |
389 | } | |
390 | /* set errno */ | |
1a0adaf3 | 391 | return rc; |
559e196a | 392 | } |
1a0adaf3 HV |
393 | rc = ivtv_copy_buf_to_user(s, buf, ubuf + tot_written, tot_count - tot_written); |
394 | if (buf != &itv->vbi.sliced_mpeg_buf) { | |
395 | ivtv_enqueue(s, buf, (buf->readpos == buf->bytesused) ? &s->q_free : &s->q_io); | |
396 | } | |
397 | else if (buf->readpos == buf->bytesused) { | |
398 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
399 | itv->vbi.sliced_mpeg_size[idx] = 0; | |
400 | itv->vbi.inserted_frame++; | |
401 | itv->vbi_data_inserted += buf->bytesused; | |
402 | } | |
403 | if (rc < 0) | |
404 | return rc; | |
405 | tot_written += rc; | |
406 | ||
407 | if (tot_written == tot_count || single_frame) | |
408 | break; | |
409 | } | |
410 | return tot_written; | |
411 | } | |
412 | ||
413 | static ssize_t ivtv_read_pos(struct ivtv_stream *s, char __user *ubuf, size_t count, | |
414 | loff_t *pos, int non_block) | |
415 | { | |
416 | ssize_t rc = count ? ivtv_read(s, ubuf, count, non_block) : 0; | |
417 | struct ivtv *itv = s->itv; | |
418 | ||
1aa32c2f | 419 | IVTV_DEBUG_HI_FILE("read %zd from %s, got %zd\n", count, s->name, rc); |
1a0adaf3 HV |
420 | if (rc > 0) |
421 | pos += rc; | |
422 | return rc; | |
423 | } | |
424 | ||
425 | int ivtv_start_capture(struct ivtv_open_id *id) | |
426 | { | |
427 | struct ivtv *itv = id->itv; | |
428 | struct ivtv_stream *s = &itv->streams[id->type]; | |
429 | struct ivtv_stream *s_vbi; | |
430 | ||
431 | if (s->type == IVTV_ENC_STREAM_TYPE_RAD || | |
432 | s->type == IVTV_DEC_STREAM_TYPE_MPG || | |
433 | s->type == IVTV_DEC_STREAM_TYPE_YUV || | |
434 | s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
435 | /* you cannot read from these stream types. */ | |
436 | return -EPERM; | |
437 | } | |
438 | ||
439 | /* Try to claim this stream. */ | |
440 | if (ivtv_claim_stream(id, s->type)) | |
441 | return -EBUSY; | |
442 | ||
443 | /* This stream does not need to start capturing */ | |
444 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
445 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
446 | return 0; | |
447 | } | |
448 | ||
449 | /* If capture is already in progress, then we also have to | |
450 | do nothing extra. */ | |
451 | if (test_bit(IVTV_F_S_STREAMOFF, &s->s_flags) || test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
452 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
453 | return 0; | |
454 | } | |
455 | ||
456 | /* Start VBI capture if required */ | |
457 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
458 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
459 | test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
460 | !test_and_set_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
461 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is claimed | |
462 | automatically when the MPG stream is claimed. | |
463 | We only need to start the VBI capturing. */ | |
464 | if (ivtv_start_v4l2_encode_stream(s_vbi)) { | |
465 | IVTV_DEBUG_WARN("VBI capture start failed\n"); | |
466 | ||
467 | /* Failure, clean up and return an error */ | |
468 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
469 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
470 | /* also releases the associated VBI stream */ | |
471 | ivtv_release_stream(s); | |
472 | return -EIO; | |
473 | } | |
474 | IVTV_DEBUG_INFO("VBI insertion started\n"); | |
475 | } | |
476 | ||
477 | /* Tell the card to start capturing */ | |
478 | if (!ivtv_start_v4l2_encode_stream(s)) { | |
479 | /* We're done */ | |
480 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
481 | /* Resume a possibly paused encoder */ | |
482 | if (test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags)) | |
483 | ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 1); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | /* failure, clean up */ | |
488 | IVTV_DEBUG_WARN("Failed to start capturing for stream %s\n", s->name); | |
489 | ||
490 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is released | |
491 | automatically when the MPG stream is released. | |
492 | We only need to stop the VBI capturing. */ | |
493 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
494 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
495 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
496 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
497 | } | |
498 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
499 | ivtv_release_stream(s); | |
500 | return -EIO; | |
501 | } | |
502 | ||
503 | ssize_t ivtv_v4l2_read(struct file * filp, char __user *buf, size_t count, loff_t * pos) | |
504 | { | |
09250193 | 505 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
506 | struct ivtv *itv = id->itv; |
507 | struct ivtv_stream *s = &itv->streams[id->type]; | |
85397ef6 | 508 | ssize_t rc; |
1a0adaf3 | 509 | |
1aa32c2f | 510 | IVTV_DEBUG_HI_FILE("read %zd bytes from %s\n", count, s->name); |
1a0adaf3 | 511 | |
85397ef6 HV |
512 | if (mutex_lock_interruptible(&itv->serialize_lock)) |
513 | return -ERESTARTSYS; | |
1a0adaf3 | 514 | rc = ivtv_start_capture(id); |
85397ef6 HV |
515 | if (!rc) |
516 | rc = ivtv_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK); | |
517 | mutex_unlock(&itv->serialize_lock); | |
518 | return rc; | |
1a0adaf3 HV |
519 | } |
520 | ||
521 | int ivtv_start_decoding(struct ivtv_open_id *id, int speed) | |
522 | { | |
523 | struct ivtv *itv = id->itv; | |
524 | struct ivtv_stream *s = &itv->streams[id->type]; | |
914610e8 | 525 | int rc; |
1a0adaf3 HV |
526 | |
527 | if (atomic_read(&itv->decoding) == 0) { | |
528 | if (ivtv_claim_stream(id, s->type)) { | |
529 | /* someone else is using this stream already */ | |
530 | IVTV_DEBUG_WARN("start decode, stream already claimed\n"); | |
531 | return -EBUSY; | |
532 | } | |
914610e8 | 533 | rc = ivtv_start_v4l2_decode_stream(s, 0); |
215659d1 IA |
534 | if (rc < 0) { |
535 | if (rc == -EAGAIN) | |
536 | rc = ivtv_start_v4l2_decode_stream(s, 0); | |
537 | if (rc < 0) | |
538 | return rc; | |
539 | } | |
1a0adaf3 HV |
540 | } |
541 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
542 | return ivtv_set_speed(itv, speed); | |
543 | return 0; | |
544 | } | |
545 | ||
85397ef6 | 546 | static ssize_t ivtv_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *pos) |
1a0adaf3 | 547 | { |
09250193 | 548 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
549 | struct ivtv *itv = id->itv; |
550 | struct ivtv_stream *s = &itv->streams[id->type]; | |
c240ad00 | 551 | struct yuv_playback_info *yi = &itv->yuv_info; |
1a0adaf3 HV |
552 | struct ivtv_buffer *buf; |
553 | struct ivtv_queue q; | |
554 | int bytes_written = 0; | |
555 | int mode; | |
556 | int rc; | |
557 | DEFINE_WAIT(wait); | |
558 | ||
1aa32c2f | 559 | IVTV_DEBUG_HI_FILE("write %zd bytes to %s\n", count, s->name); |
1a0adaf3 HV |
560 | |
561 | if (s->type != IVTV_DEC_STREAM_TYPE_MPG && | |
562 | s->type != IVTV_DEC_STREAM_TYPE_YUV && | |
563 | s->type != IVTV_DEC_STREAM_TYPE_VOUT) | |
564 | /* not decoder streams */ | |
565 | return -EPERM; | |
566 | ||
567 | /* Try to claim this stream */ | |
568 | if (ivtv_claim_stream(id, s->type)) | |
569 | return -EBUSY; | |
570 | ||
571 | /* This stream does not need to start any decoding */ | |
572 | if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
2f3a9893 HV |
573 | int elems = count / sizeof(struct v4l2_sliced_vbi_data); |
574 | ||
1a0adaf3 | 575 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); |
ddda4249 | 576 | return ivtv_write_vbi_from_user(itv, |
b0c45686 | 577 | (const struct v4l2_sliced_vbi_data __user *)user_buf, elems); |
1a0adaf3 HV |
578 | } |
579 | ||
580 | mode = s->type == IVTV_DEC_STREAM_TYPE_MPG ? OUT_MPG : OUT_YUV; | |
581 | ||
582 | if (ivtv_set_output_mode(itv, mode) != mode) { | |
583 | ivtv_release_stream(s); | |
584 | return -EBUSY; | |
585 | } | |
586 | ivtv_queue_init(&q); | |
587 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
588 | ||
464e9f3a | 589 | /* Start decoder (returns 0 if already started) */ |
464e9f3a | 590 | rc = ivtv_start_decoding(id, itv->speed); |
464e9f3a IA |
591 | if (rc) { |
592 | IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name); | |
593 | ||
594 | /* failure, clean up */ | |
595 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
596 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
597 | return rc; | |
598 | } | |
599 | ||
1a0adaf3 | 600 | retry: |
77aded6b IA |
601 | /* If possible, just DMA the entire frame - Check the data transfer size |
602 | since we may get here before the stream has been fully set-up */ | |
603 | if (mode == OUT_YUV && s->q_full.length == 0 && itv->dma_data_req_size) { | |
604 | while (count >= itv->dma_data_req_size) { | |
2e668962 IA |
605 | rc = ivtv_yuv_udma_stream_frame(itv, (void __user *)user_buf); |
606 | ||
607 | if (rc < 0) | |
608 | return rc; | |
609 | ||
610 | bytes_written += itv->dma_data_req_size; | |
611 | user_buf += itv->dma_data_req_size; | |
612 | count -= itv->dma_data_req_size; | |
77aded6b IA |
613 | } |
614 | if (count == 0) { | |
615 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); | |
616 | return bytes_written; | |
617 | } | |
618 | } | |
619 | ||
1a0adaf3 HV |
620 | for (;;) { |
621 | /* Gather buffers */ | |
622 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_io))) | |
623 | ivtv_enqueue(s, buf, &q); | |
624 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_free))) { | |
625 | ivtv_enqueue(s, buf, &q); | |
626 | } | |
627 | if (q.buffers) | |
628 | break; | |
629 | if (filp->f_flags & O_NONBLOCK) | |
630 | return -EAGAIN; | |
cdc03781 | 631 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
632 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); |
633 | /* New buffers might have become free before we were added to the waitqueue */ | |
634 | if (!s->q_free.buffers) | |
635 | schedule(); | |
636 | finish_wait(&s->waitq, &wait); | |
cdc03781 | 637 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
638 | if (signal_pending(current)) { |
639 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
640 | return -EINTR; | |
641 | } | |
642 | } | |
643 | ||
644 | /* copy user data into buffers */ | |
645 | while ((buf = ivtv_dequeue(s, &q))) { | |
c240ad00 IA |
646 | /* yuv is a pain. Don't copy more data than needed for a single |
647 | frame, otherwise we lose sync with the incoming stream */ | |
648 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && | |
649 | yi->stream_size + count > itv->dma_data_req_size) | |
650 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, | |
651 | itv->dma_data_req_size - yi->stream_size); | |
652 | else | |
653 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, count); | |
1a0adaf3 | 654 | |
c240ad00 | 655 | /* Make sure we really got all the user data */ |
1a0adaf3 HV |
656 | if (rc < 0) { |
657 | ivtv_queue_move(s, &q, NULL, &s->q_free, 0); | |
658 | return rc; | |
659 | } | |
660 | user_buf += rc; | |
661 | count -= rc; | |
662 | bytes_written += rc; | |
663 | ||
c240ad00 IA |
664 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
665 | yi->stream_size += rc; | |
666 | /* If we have a complete yuv frame, break loop now */ | |
667 | if (yi->stream_size == itv->dma_data_req_size) { | |
668 | ivtv_enqueue(s, buf, &s->q_full); | |
669 | yi->stream_size = 0; | |
670 | break; | |
671 | } | |
672 | } | |
673 | ||
1a0adaf3 HV |
674 | if (buf->bytesused != s->buf_size) { |
675 | /* incomplete, leave in q_io for next time */ | |
676 | ivtv_enqueue(s, buf, &s->q_io); | |
677 | break; | |
678 | } | |
679 | /* Byteswap MPEG buffer */ | |
680 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
681 | ivtv_buf_swap(buf); | |
682 | ivtv_enqueue(s, buf, &s->q_full); | |
683 | } | |
684 | ||
1a0adaf3 HV |
685 | if (test_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags)) { |
686 | if (s->q_full.length >= itv->dma_data_req_size) { | |
687 | int got_sig; | |
688 | ||
77aded6b IA |
689 | if (mode == OUT_YUV) |
690 | ivtv_yuv_setup_stream_frame(itv); | |
691 | ||
cdc03781 | 692 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
693 | prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE); |
694 | while (!(got_sig = signal_pending(current)) && | |
695 | test_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) { | |
696 | schedule(); | |
697 | } | |
698 | finish_wait(&itv->dma_waitq, &wait); | |
cdc03781 | 699 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
700 | if (got_sig) { |
701 | IVTV_DEBUG_INFO("User interrupted %s\n", s->name); | |
702 | return -EINTR; | |
703 | } | |
704 | ||
705 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
706 | ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size); | |
707 | ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 1); | |
708 | } | |
709 | } | |
710 | /* more user data is available, wait until buffers become free | |
711 | to transfer the rest. */ | |
712 | if (count && !(filp->f_flags & O_NONBLOCK)) | |
713 | goto retry; | |
1aa32c2f | 714 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); |
1a0adaf3 HV |
715 | return bytes_written; |
716 | } | |
717 | ||
85397ef6 HV |
718 | ssize_t ivtv_v4l2_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *pos) |
719 | { | |
720 | struct ivtv_open_id *id = fh2id(filp->private_data); | |
721 | struct ivtv *itv = id->itv; | |
722 | ssize_t res; | |
723 | ||
724 | if (mutex_lock_interruptible(&itv->serialize_lock)) | |
725 | return -ERESTARTSYS; | |
726 | res = ivtv_write(filp, user_buf, count, pos); | |
727 | mutex_unlock(&itv->serialize_lock); | |
728 | return res; | |
729 | } | |
730 | ||
1a0adaf3 HV |
731 | unsigned int ivtv_v4l2_dec_poll(struct file *filp, poll_table *wait) |
732 | { | |
09250193 | 733 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
734 | struct ivtv *itv = id->itv; |
735 | struct ivtv_stream *s = &itv->streams[id->type]; | |
736 | int res = 0; | |
737 | ||
738 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 739 | IVTV_DEBUG_HI_FILE("Decoder poll\n"); |
1a0adaf3 | 740 | |
09250193 HV |
741 | /* If there are subscribed events, then only use the new event |
742 | API instead of the old video.h based API. */ | |
523f46d6 HV |
743 | if (!list_empty(&id->fh.subscribed)) { |
744 | poll_wait(filp, &id->fh.wait, wait); | |
09250193 HV |
745 | /* Turn off the old-style vsync events */ |
746 | clear_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags); | |
747 | if (v4l2_event_pending(&id->fh)) | |
748 | res = POLLPRI; | |
749 | } else { | |
750 | /* This is the old-style API which is here only for backwards | |
751 | compatibility. */ | |
752 | poll_wait(filp, &s->waitq, wait); | |
753 | set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags); | |
754 | if (test_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags) || | |
755 | test_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags)) | |
756 | res = POLLPRI; | |
757 | } | |
1a0adaf3 HV |
758 | |
759 | /* Allow write if buffers are available for writing */ | |
760 | if (s->q_free.buffers) | |
761 | res |= POLLOUT | POLLWRNORM; | |
762 | return res; | |
763 | } | |
764 | ||
d0b66fdf | 765 | unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table *wait) |
1a0adaf3 | 766 | { |
d0b66fdf | 767 | unsigned long req_events = poll_requested_events(wait); |
09250193 | 768 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
769 | struct ivtv *itv = id->itv; |
770 | struct ivtv_stream *s = &itv->streams[id->type]; | |
771 | int eof = test_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
5138870d | 772 | unsigned res = 0; |
1a0adaf3 HV |
773 | |
774 | /* Start a capture if there is none */ | |
d0b66fdf HV |
775 | if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags) && |
776 | (req_events & (POLLIN | POLLRDNORM))) { | |
baa4072d | 777 | int rc; |
1a0adaf3 | 778 | |
85397ef6 | 779 | mutex_lock(&itv->serialize_lock); |
baa4072d | 780 | rc = ivtv_start_capture(id); |
85397ef6 | 781 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
782 | if (rc) { |
783 | IVTV_DEBUG_INFO("Could not start capture for %s (%d)\n", | |
784 | s->name, rc); | |
785 | return POLLERR; | |
786 | } | |
1aa32c2f | 787 | IVTV_DEBUG_FILE("Encoder poll started capture\n"); |
1a0adaf3 HV |
788 | } |
789 | ||
790 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 791 | IVTV_DEBUG_HI_FILE("Encoder poll\n"); |
1a0adaf3 | 792 | poll_wait(filp, &s->waitq, wait); |
5138870d HV |
793 | if (v4l2_event_pending(&id->fh)) |
794 | res |= POLLPRI; | |
795 | else | |
523f46d6 | 796 | poll_wait(filp, &id->fh.wait, wait); |
1a0adaf3 | 797 | |
16928be3 | 798 | if (s->q_full.length || s->q_io.length) |
5138870d | 799 | return res | POLLIN | POLLRDNORM; |
16928be3 | 800 | if (eof) |
5138870d HV |
801 | return res | POLLHUP; |
802 | return res; | |
1a0adaf3 HV |
803 | } |
804 | ||
805 | void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end) | |
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 | /* 'Unclaim' this stream */ | |
813 | ||
814 | /* Stop capturing */ | |
815 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
816 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
817 | ||
818 | IVTV_DEBUG_INFO("close stopping capture\n"); | |
819 | /* Special case: a running VBI capture for VBI insertion | |
820 | in the mpeg stream. Need to stop that too. */ | |
821 | if (id->type == IVTV_ENC_STREAM_TYPE_MPG && | |
822 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags) && | |
823 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
824 | IVTV_DEBUG_INFO("close stopping embedded VBI capture\n"); | |
825 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
826 | } | |
827 | if ((id->type == IVTV_DEC_STREAM_TYPE_VBI || | |
828 | id->type == IVTV_ENC_STREAM_TYPE_VBI) && | |
829 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
830 | /* Also used internally, don't stop capturing */ | |
61bb725e | 831 | s->fh = NULL; |
1a0adaf3 HV |
832 | } |
833 | else { | |
834 | ivtv_stop_v4l2_encode_stream(s, gop_end); | |
835 | } | |
836 | } | |
559e196a HV |
837 | if (!gop_end) { |
838 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
839 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
840 | ivtv_release_stream(s); | |
841 | } | |
1a0adaf3 HV |
842 | } |
843 | ||
31ec1356 | 844 | static void ivtv_stop_decoding(struct ivtv_open_id *id, int flags, u64 pts) |
1a0adaf3 HV |
845 | { |
846 | struct ivtv *itv = id->itv; | |
847 | struct ivtv_stream *s = &itv->streams[id->type]; | |
848 | ||
1aa32c2f | 849 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 | 850 | |
666092c6 IA |
851 | if (id->type == IVTV_DEC_STREAM_TYPE_YUV && |
852 | test_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags)) { | |
853 | /* Restore registers we've changed & clean up any mess */ | |
854 | ivtv_yuv_close(itv); | |
855 | } | |
856 | ||
1a0adaf3 HV |
857 | /* Stop decoding */ |
858 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
859 | IVTV_DEBUG_INFO("close stopping decode\n"); | |
860 | ||
861 | ivtv_stop_v4l2_decode_stream(s, flags, pts); | |
ad8ff0f1 | 862 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
863 | } |
864 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
865 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
666092c6 | 866 | |
ad8ff0f1 | 867 | if (itv->output_mode == OUT_UDMA_YUV && id->yuv_frames) |
cb50f548 | 868 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
869 | |
870 | itv->speed = 0; | |
ac425144 | 871 | clear_bit(IVTV_F_I_DEC_PAUSED, &itv->i_flags); |
1a0adaf3 HV |
872 | ivtv_release_stream(s); |
873 | } | |
874 | ||
bec43661 | 875 | int ivtv_v4l2_close(struct file *filp) |
1a0adaf3 | 876 | { |
09250193 HV |
877 | struct v4l2_fh *fh = filp->private_data; |
878 | struct ivtv_open_id *id = fh2id(fh); | |
1a0adaf3 HV |
879 | struct ivtv *itv = id->itv; |
880 | struct ivtv_stream *s = &itv->streams[id->type]; | |
881 | ||
1aa32c2f | 882 | IVTV_DEBUG_FILE("close %s\n", s->name); |
1a0adaf3 | 883 | |
85397ef6 HV |
884 | mutex_lock(&itv->serialize_lock); |
885 | ||
3f3edd7c HV |
886 | /* Stop radio */ |
887 | if (id->type == IVTV_ENC_STREAM_TYPE_RAD && | |
888 | v4l2_fh_is_singular_file(filp)) { | |
1a0adaf3 HV |
889 | /* Closing radio device, return to TV mode */ |
890 | ivtv_mute(itv); | |
891 | /* Mark that the radio is no longer in use */ | |
892 | clear_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
893 | /* Switch tuner to TV */ | |
f41737ec | 894 | ivtv_call_all(itv, core, s_std, itv->std); |
1a0adaf3 HV |
895 | /* Select correct audio input (i.e. TV tuner or Line in) */ |
896 | ivtv_audio_set_io(itv); | |
3ff4ad81 HV |
897 | if (itv->hw_flags & IVTV_HW_SAA711X) { |
898 | ivtv_call_hw(itv, IVTV_HW_SAA711X, video, s_crystal_freq, | |
899 | SAA7115_FREQ_32_11_MHZ, 0); | |
f2100d82 | 900 | } |
2f7362ef HV |
901 | if (atomic_read(&itv->capturing) > 0) { |
902 | /* Undo video mute */ | |
903 | ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, | |
3f3edd7c HV |
904 | v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute) | |
905 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8)); | |
2f7362ef | 906 | } |
1a0adaf3 HV |
907 | /* Done! Unmute and continue. */ |
908 | ivtv_unmute(itv); | |
3f3edd7c HV |
909 | } |
910 | ||
911 | v4l2_fh_del(fh); | |
912 | v4l2_fh_exit(fh); | |
913 | ||
914 | /* Easy case first: this stream was never claimed by us */ | |
85397ef6 HV |
915 | if (s->fh != &id->fh) |
916 | goto close_done; | |
3f3edd7c HV |
917 | |
918 | /* 'Unclaim' this stream */ | |
919 | ||
920 | if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) { | |
5a338c38 HV |
921 | struct ivtv_stream *s_vout = &itv->streams[IVTV_DEC_STREAM_TYPE_VOUT]; |
922 | ||
da8ec560 | 923 | ivtv_stop_decoding(id, V4L2_DEC_CMD_STOP_TO_BLACK | V4L2_DEC_CMD_STOP_IMMEDIATELY, 0); |
5a338c38 HV |
924 | |
925 | /* If all output streams are closed, and if the user doesn't have | |
2f3a9893 | 926 | IVTV_DEC_STREAM_TYPE_VOUT open, then disable CC on TV-out. */ |
5a338c38 | 927 | if (itv->output_mode == OUT_NONE && !test_bit(IVTV_F_S_APPL_IO, &s_vout->s_flags)) { |
2f3a9893 HV |
928 | /* disable CC on TV-out */ |
929 | ivtv_disable_cc(itv); | |
5a338c38 | 930 | } |
1a0adaf3 HV |
931 | } else { |
932 | ivtv_stop_capture(id, 0); | |
933 | } | |
85397ef6 | 934 | close_done: |
1a0adaf3 | 935 | kfree(id); |
85397ef6 | 936 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
937 | return 0; |
938 | } | |
939 | ||
85397ef6 | 940 | static int ivtv_open(struct file *filp) |
1a0adaf3 | 941 | { |
914610e8 | 942 | struct video_device *vdev = video_devdata(filp); |
cdc03781 | 943 | struct ivtv_stream *s = video_get_drvdata(vdev); |
baa4072d | 944 | struct ivtv *itv = s->itv; |
1a0adaf3 | 945 | struct ivtv_open_id *item; |
09250193 | 946 | int res = 0; |
1a0adaf3 | 947 | |
1aa32c2f | 948 | IVTV_DEBUG_FILE("open %s\n", s->name); |
c976bc82 | 949 | |
cdc03781 HV |
950 | if (ivtv_init_on_first_open(itv)) { |
951 | IVTV_ERR("Failed to initialize on device %s\n", | |
952 | video_device_node_name(vdev)); | |
953 | return -ENXIO; | |
954 | } | |
955 | ||
914610e8 | 956 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
215659d1 | 957 | /* Unless ivtv_fw_debug is set, error out if firmware dead. */ |
914610e8 IA |
958 | if (ivtv_fw_debug) { |
959 | IVTV_WARN("Opening %s with dead firmware lockout disabled\n", | |
960 | video_device_node_name(vdev)); | |
961 | IVTV_WARN("Selected firmware errors will be ignored\n"); | |
215659d1 | 962 | } else { |
914610e8 | 963 | #else |
215659d1 | 964 | if (1) { |
914610e8 | 965 | #endif |
215659d1 IA |
966 | res = ivtv_firmware_check(itv, "ivtv_serialized_open"); |
967 | if (res == -EAGAIN) | |
968 | res = ivtv_firmware_check(itv, "ivtv_serialized_open"); | |
969 | if (res < 0) | |
970 | return -EIO; | |
971 | } | |
914610e8 | 972 | |
baa4072d | 973 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG && |
1a0adaf3 HV |
974 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_YUV].s_flags)) |
975 | return -EBUSY; | |
976 | ||
baa4072d | 977 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && |
1a0adaf3 HV |
978 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_MPG].s_flags)) |
979 | return -EBUSY; | |
980 | ||
baa4072d | 981 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 HV |
982 | if (read_reg(0x82c) == 0) { |
983 | IVTV_ERR("Tried to open YUV output device but need to send data to mpeg decoder before it can be used\n"); | |
984 | /* return -ENODEV; */ | |
985 | } | |
986 | ivtv_udma_alloc(itv); | |
987 | } | |
988 | ||
989 | /* Allocate memory */ | |
09250193 | 990 | item = kzalloc(sizeof(struct ivtv_open_id), GFP_KERNEL); |
1a0adaf3 HV |
991 | if (NULL == item) { |
992 | IVTV_DEBUG_WARN("nomem on v4l2 open\n"); | |
993 | return -ENOMEM; | |
994 | } | |
09250193 | 995 | v4l2_fh_init(&item->fh, s->vdev); |
1a0adaf3 | 996 | item->itv = itv; |
baa4072d | 997 | item->type = s->type; |
1a0adaf3 | 998 | |
09250193 | 999 | filp->private_data = &item->fh; |
3f3edd7c | 1000 | v4l2_fh_add(&item->fh); |
1a0adaf3 | 1001 | |
3f3edd7c HV |
1002 | if (item->type == IVTV_ENC_STREAM_TYPE_RAD && |
1003 | v4l2_fh_is_singular_file(filp)) { | |
3562c43b HV |
1004 | if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) { |
1005 | if (atomic_read(&itv->capturing) > 0) { | |
1006 | /* switching to radio while capture is | |
1007 | in progress is not polite */ | |
3f3edd7c | 1008 | v4l2_fh_del(&item->fh); |
09250193 | 1009 | v4l2_fh_exit(&item->fh); |
3562c43b HV |
1010 | kfree(item); |
1011 | return -EBUSY; | |
1012 | } | |
1013 | } | |
1014 | /* Mark that the radio is being used. */ | |
1015 | set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
1a0adaf3 HV |
1016 | /* We have the radio */ |
1017 | ivtv_mute(itv); | |
1018 | /* Switch tuner to radio */ | |
67ec09fd | 1019 | ivtv_call_all(itv, tuner, s_radio); |
1a0adaf3 HV |
1020 | /* Select the correct audio input (i.e. radio tuner) */ |
1021 | ivtv_audio_set_io(itv); | |
67ec09fd | 1022 | if (itv->hw_flags & IVTV_HW_SAA711X) { |
3ff4ad81 HV |
1023 | ivtv_call_hw(itv, IVTV_HW_SAA711X, video, s_crystal_freq, |
1024 | SAA7115_FREQ_32_11_MHZ, SAA7115_FREQ_FL_APLL); | |
f2100d82 | 1025 | } |
1a0adaf3 HV |
1026 | /* Done! Unmute and continue. */ |
1027 | ivtv_unmute(itv); | |
1028 | } | |
1029 | ||
1030 | /* YUV or MPG Decoding Mode? */ | |
c240ad00 | 1031 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) { |
1a0adaf3 | 1032 | clear_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
c240ad00 | 1033 | } else if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 | 1034 | set_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
c240ad00 IA |
1035 | /* For yuv, we need to know the dma size before we start */ |
1036 | itv->dma_data_req_size = | |
77aded6b | 1037 | 1080 * ((itv->yuv_info.v4l2_src_h + 31) & ~31); |
c240ad00 IA |
1038 | itv->yuv_info.stream_size = 0; |
1039 | } | |
baa4072d HV |
1040 | return 0; |
1041 | } | |
1042 | ||
85397ef6 HV |
1043 | int ivtv_v4l2_open(struct file *filp) |
1044 | { | |
1045 | struct video_device *vdev = video_devdata(filp); | |
1046 | int res; | |
1047 | ||
1048 | if (mutex_lock_interruptible(vdev->lock)) | |
1049 | return -ERESTARTSYS; | |
1050 | res = ivtv_open(filp); | |
1051 | mutex_unlock(vdev->lock); | |
1052 | return res; | |
1053 | } | |
1054 | ||
1a0adaf3 HV |
1055 | void ivtv_mute(struct ivtv *itv) |
1056 | { | |
1a0adaf3 HV |
1057 | if (atomic_read(&itv->capturing)) |
1058 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 1); | |
1a0adaf3 HV |
1059 | IVTV_DEBUG_INFO("Mute\n"); |
1060 | } | |
1061 | ||
1062 | void ivtv_unmute(struct ivtv *itv) | |
1063 | { | |
1a0adaf3 | 1064 | if (atomic_read(&itv->capturing)) { |
3562c43b | 1065 | ivtv_msleep_timeout(100, 0); |
1a0adaf3 HV |
1066 | ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); |
1067 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 0); | |
1068 | } | |
1a0adaf3 HV |
1069 | IVTV_DEBUG_INFO("Unmute\n"); |
1070 | } |