* Derived from ivtv-fileops.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- * Copyright (C) 2008 Andy Walls <awalls@radix.net>
+ * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
/* This function tries to claim the stream for a specific file descriptor.
If no one else is using this stream then the stream is claimed and
- associated VBI streams are also automatically claimed.
+ associated VBI and IDX streams are also automatically claimed.
Possible error returns: -EBUSY if someone else has claimed
the stream or 0 on success. */
-static int cx18_claim_stream(struct cx18_open_id *id, int type)
+int cx18_claim_stream(struct cx18_open_id *id, int type)
{
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[type];
- struct cx18_stream *s_vbi;
- int vbi_type;
+ struct cx18_stream *s_assoc;
+
+ /* Nothing should ever try to directly claim the IDX stream */
+ if (type == CX18_ENC_STREAM_TYPE_IDX) {
+ CX18_WARN("MPEG Index stream cannot be claimed "
+ "directly, but something tried.\n");
+ return -EINVAL;
+ }
if (test_and_set_bit(CX18_F_S_CLAIMED, &s->s_flags)) {
/* someone already claimed this stream */
}
s->id = id->open_id;
- /* CX18_DEC_STREAM_TYPE_MPG needs to claim CX18_DEC_STREAM_TYPE_VBI,
- CX18_ENC_STREAM_TYPE_MPG needs to claim CX18_ENC_STREAM_TYPE_VBI
- (provided VBI insertion is on and sliced VBI is selected), for all
- other streams we're done */
- if (type == CX18_ENC_STREAM_TYPE_MPG &&
- cx->vbi.insert_mpeg && cx->vbi.sliced_in->service_set) {
- vbi_type = CX18_ENC_STREAM_TYPE_VBI;
- } else {
+ /*
+ * CX18_ENC_STREAM_TYPE_MPG needs to claim:
+ * CX18_ENC_STREAM_TYPE_VBI, if VBI insertion is on for sliced VBI, or
+ * CX18_ENC_STREAM_TYPE_IDX, if VBI insertion is off for sliced VBI
+ * (We don't yet fix up MPEG Index entries for our inserted packets).
+ *
+ * For all other streams we're done.
+ */
+ if (type != CX18_ENC_STREAM_TYPE_MPG)
+ return 0;
+
+ s_assoc = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ if (cx->vbi.insert_mpeg && !cx18_raw_vbi(cx))
+ s_assoc = &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
+ else if (!cx18_stream_enabled(s_assoc))
return 0;
- }
- s_vbi = &cx->streams[vbi_type];
- set_bit(CX18_F_S_CLAIMED, &s_vbi->s_flags);
+ set_bit(CX18_F_S_CLAIMED, &s_assoc->s_flags);
/* mark that it is used internally */
- set_bit(CX18_F_S_INTERNAL_USE, &s_vbi->s_flags);
+ set_bit(CX18_F_S_INTERNAL_USE, &s_assoc->s_flags);
return 0;
}
+EXPORT_SYMBOL(cx18_claim_stream);
/* This function releases a previously claimed stream. It will take into
account associated VBI streams. */
-static void cx18_release_stream(struct cx18_stream *s)
+void cx18_release_stream(struct cx18_stream *s)
{
struct cx18 *cx = s->cx;
- struct cx18_stream *s_vbi;
+ struct cx18_stream *s_assoc;
s->id = -1;
+ if (s->type == CX18_ENC_STREAM_TYPE_IDX) {
+ /*
+ * The IDX stream is only used internally, and can
+ * only be indirectly unclaimed by unclaiming the MPG stream.
+ */
+ return;
+ }
+
if (s->type == CX18_ENC_STREAM_TYPE_VBI &&
test_bit(CX18_F_S_INTERNAL_USE, &s->s_flags)) {
/* this stream is still in use internally */
cx18_flush_queues(s);
- /* CX18_ENC_STREAM_TYPE_MPG needs to release CX18_ENC_STREAM_TYPE_VBI,
- for all other streams we're done */
- if (s->type == CX18_ENC_STREAM_TYPE_MPG)
- s_vbi = &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
- else
+ /*
+ * CX18_ENC_STREAM_TYPE_MPG needs to release the
+ * CX18_ENC_STREAM_TYPE_VBI and/or CX18_ENC_STREAM_TYPE_IDX streams.
+ *
+ * For all other streams we're done.
+ */
+ if (s->type != CX18_ENC_STREAM_TYPE_MPG)
return;
- /* clear internal use flag */
- if (!test_and_clear_bit(CX18_F_S_INTERNAL_USE, &s_vbi->s_flags)) {
- /* was already cleared */
- return;
+ /* Unclaim the associated MPEG Index stream */
+ s_assoc = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ if (test_and_clear_bit(CX18_F_S_INTERNAL_USE, &s_assoc->s_flags)) {
+ clear_bit(CX18_F_S_CLAIMED, &s_assoc->s_flags);
+ cx18_flush_queues(s_assoc);
}
- if (s_vbi->id != -1) {
- /* VBI stream still claimed by a file descriptor */
- return;
+
+ /* Unclaim the associated VBI stream */
+ s_assoc = &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
+ if (test_and_clear_bit(CX18_F_S_INTERNAL_USE, &s_assoc->s_flags)) {
+ if (s_assoc->id == -1) {
+ /*
+ * The VBI stream is not still claimed by a file
+ * descriptor, so completely unclaim it.
+ */
+ clear_bit(CX18_F_S_CLAIMED, &s_assoc->s_flags);
+ cx18_flush_queues(s_assoc);
+ }
}
- clear_bit(CX18_F_S_CLAIMED, &s_vbi->s_flags);
- cx18_flush_queues(s_vbi);
}
+EXPORT_SYMBOL(cx18_release_stream);
static void cx18_dualwatch(struct cx18 *cx)
{
struct v4l2_tuner vt;
- u16 new_bitmap;
- u16 new_stereo_mode;
- const u16 stereo_mask = 0x0300;
- const u16 dual = 0x0200;
- u32 h;
+ u32 new_stereo_mode;
+ const u32 dual = 0x0200;
- new_stereo_mode = cx->params.audio_properties & stereo_mask;
+ new_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode);
memset(&vt, 0, sizeof(vt));
- cx18_call_i2c_clients(cx, VIDIOC_G_TUNER, &vt);
+ cx18_call_all(cx, tuner, g_tuner, &vt);
if (vt.audmode == V4L2_TUNER_MODE_LANG1_LANG2 &&
(vt.rxsubchans & V4L2_TUNER_SUB_LANG2))
new_stereo_mode = dual;
if (new_stereo_mode == cx->dualwatch_stereo_mode)
return;
- new_bitmap = new_stereo_mode
- | (cx->params.audio_properties & ~stereo_mask);
-
- CX18_DEBUG_INFO("dualwatch: change stereo flag from 0x%x to 0x%x. "
- "new audio_bitmask=0x%ux\n",
- cx->dualwatch_stereo_mode, new_stereo_mode, new_bitmap);
-
- h = cx18_find_handle(cx);
- if (h == CX18_INVALID_TASK_HANDLE) {
- CX18_DEBUG_INFO("dualwatch: can't find valid task handle\n");
- return;
- }
-
- if (cx18_vapi(cx,
- CX18_CPU_SET_AUDIO_PARAMETERS, 2, h, new_bitmap) == 0) {
- cx->dualwatch_stereo_mode = new_stereo_mode;
- return;
- }
- CX18_DEBUG_INFO("dualwatch: changing stereo flag failed\n");
+ CX18_DEBUG_INFO("dualwatch: change stereo flag from 0x%x to 0x%x.\n",
+ cx->dualwatch_stereo_mode, new_stereo_mode);
+ if (v4l2_ctrl_s_ctrl(cx->cxhdl.audio_mode, new_stereo_mode))
+ CX18_DEBUG_INFO("dualwatch: changing stereo flag failed\n");
}
-static struct cx18_buffer *cx18_get_buffer(struct cx18_stream *s, int non_block, int *err)
+static struct cx18_mdl *cx18_get_mdl(struct cx18_stream *s, int non_block,
+ int *err)
{
struct cx18 *cx = s->cx;
struct cx18_stream *s_vbi = &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
- struct cx18_buffer *buf;
+ struct cx18_mdl *mdl;
DEFINE_WAIT(wait);
*err = 0;
while (1) {
if (s->type == CX18_ENC_STREAM_TYPE_MPG) {
-
+ /* Process pending program updates and VBI data */
if (time_after(jiffies, cx->dualwatch_jiffies + msecs_to_jiffies(1000))) {
cx->dualwatch_jiffies = jiffies;
cx18_dualwatch(cx);
}
if (test_bit(CX18_F_S_INTERNAL_USE, &s_vbi->s_flags) &&
!test_bit(CX18_F_S_APPL_IO, &s_vbi->s_flags)) {
- while ((buf = cx18_dequeue(s_vbi, &s_vbi->q_full))) {
+ while ((mdl = cx18_dequeue(s_vbi,
+ &s_vbi->q_full))) {
/* byteswap and process VBI data */
-/* cx18_process_vbi_data(cx, buf, s_vbi->dma_pts, s_vbi->type); */
- cx18_enqueue(s_vbi, buf, &s_vbi->q_free);
+ cx18_process_vbi_data(cx, mdl,
+ s_vbi->type);
+ cx18_stream_put_mdl_fw(s_vbi, mdl);
}
}
- buf = &cx->vbi.sliced_mpeg_buf;
- if (buf->readpos != buf->bytesused)
- return buf;
+ mdl = &cx->vbi.sliced_mpeg_mdl;
+ if (mdl->readpos != mdl->bytesused)
+ return mdl;
}
/* do we have new data? */
- buf = cx18_dequeue(s, &s->q_full);
- if (buf) {
- if (!test_and_clear_bit(CX18_F_B_NEED_BUF_SWAP,
- &buf->b_flags))
- return buf;
+ mdl = cx18_dequeue(s, &s->q_full);
+ if (mdl) {
+ if (!test_and_clear_bit(CX18_F_M_NEED_SWAP,
+ &mdl->m_flags))
+ return mdl;
if (s->type == CX18_ENC_STREAM_TYPE_MPG)
/* byteswap MPG data */
- cx18_buf_swap(buf);
+ cx18_mdl_swap(mdl);
else {
/* byteswap and process VBI data */
- cx18_process_vbi_data(cx, buf,
- s->dma_pts, s->type);
+ cx18_process_vbi_data(cx, mdl, s->type);
}
- return buf;
+ return mdl;
}
/* return if end of stream */
prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE);
/* New buffers might have become available before we were added
to the waitqueue */
- if (!atomic_read(&s->q_full.buffers))
+ if (!atomic_read(&s->q_full.depth))
schedule();
finish_wait(&s->waitq, &wait);
if (signal_pending(current)) {
}
}
-static void cx18_setup_sliced_vbi_buf(struct cx18 *cx)
+static void cx18_setup_sliced_vbi_mdl(struct cx18 *cx)
{
+ struct cx18_mdl *mdl = &cx->vbi.sliced_mpeg_mdl;
+ struct cx18_buffer *buf = &cx->vbi.sliced_mpeg_buf;
int idx = cx->vbi.inserted_frame % CX18_VBI_FRAMES;
- cx->vbi.sliced_mpeg_buf.buf = cx->vbi.sliced_mpeg_data[idx];
- cx->vbi.sliced_mpeg_buf.bytesused = cx->vbi.sliced_mpeg_size[idx];
- cx->vbi.sliced_mpeg_buf.readpos = 0;
+ buf->buf = cx->vbi.sliced_mpeg_data[idx];
+ buf->bytesused = cx->vbi.sliced_mpeg_size[idx];
+ buf->readpos = 0;
+
+ mdl->curr_buf = NULL;
+ mdl->bytesused = cx->vbi.sliced_mpeg_size[idx];
+ mdl->readpos = 0;
}
static size_t cx18_copy_buf_to_user(struct cx18_stream *s,
- struct cx18_buffer *buf, char __user *ubuf, size_t ucount)
+ struct cx18_buffer *buf, char __user *ubuf, size_t ucount, bool *stop)
{
struct cx18 *cx = s->cx;
size_t len = buf->bytesused - buf->readpos;
+ *stop = false;
if (len > ucount)
len = ucount;
if (cx->vbi.insert_mpeg && s->type == CX18_ENC_STREAM_TYPE_MPG &&
- cx->vbi.sliced_in->service_set && buf != &cx->vbi.sliced_mpeg_buf) {
+ !cx18_raw_vbi(cx) && buf != &cx->vbi.sliced_mpeg_buf) {
+ /*
+ * Try to find a good splice point in the PS, just before
+ * an MPEG-2 Program Pack start code, and provide only
+ * up to that point to the user, so it's easy to insert VBI data
+ * the next time around.
+ *
+ * This will not work for an MPEG-2 TS and has only been
+ * verified by analysis to work for an MPEG-2 PS. Helen Buus
+ * pointed out this works for the CX23416 MPEG-2 DVD compatible
+ * stream, and research indicates both the MPEG 2 SVCD and DVD
+ * stream types use an MPEG-2 PS container.
+ */
+ /*
+ * An MPEG-2 Program Stream (PS) is a series of
+ * MPEG-2 Program Packs terminated by an
+ * MPEG Program End Code after the last Program Pack.
+ * A Program Pack may hold a PS System Header packet and any
+ * number of Program Elementary Stream (PES) Packets
+ */
const char *start = buf->buf + buf->readpos;
const char *p = start + 1;
const u8 *q;
int stuffing, i;
while (start + len > p) {
+ /* Scan for a 0 to find a potential MPEG-2 start code */
q = memchr(p, 0, start + len - p);
if (q == NULL)
break;
p = q + 1;
+ /*
+ * Keep looking if not a
+ * MPEG-2 Pack header start code: 0x00 0x00 0x01 0xba
+ * or MPEG-2 video PES start code: 0x00 0x00 0x01 0xe0
+ */
if ((char *)q + 15 >= buf->buf + buf->bytesused ||
q[1] != 0 || q[2] != 1 || q[3] != ch)
continue;
+
+ /* If expecting the primary video PES */
if (!cx->search_pack_header) {
+ /* Continue if it couldn't be a PES packet */
if ((q[6] & 0xc0) != 0x80)
continue;
- if (((q[7] & 0xc0) == 0x80 &&
- (q[9] & 0xf0) == 0x20) ||
- ((q[7] & 0xc0) == 0xc0 &&
- (q[9] & 0xf0) == 0x30)) {
- ch = 0xba;
+ /* Check if a PTS or PTS & DTS follow */
+ if (((q[7] & 0xc0) == 0x80 && /* PTS only */
+ (q[9] & 0xf0) == 0x20) || /* PTS only */
+ ((q[7] & 0xc0) == 0xc0 && /* PTS & DTS */
+ (q[9] & 0xf0) == 0x30)) { /* DTS follows */
+ /* Assume we found the video PES hdr */
+ ch = 0xba; /* next want a Program Pack*/
cx->search_pack_header = 1;
- p = q + 9;
+ p = q + 9; /* Skip this video PES hdr */
}
continue;
}
+
+ /* We may have found a Program Pack start code */
+
+ /* Get the count of stuffing bytes & verify them */
stuffing = q[13] & 7;
/* all stuffing bytes must be 0xff */
for (i = 0; i < stuffing; i++)
if (q[14 + i] != 0xff)
break;
- if (i == stuffing &&
- (q[4] & 0xc4) == 0x44 &&
- (q[12] & 3) == 3 &&
- q[14 + stuffing] == 0 &&
+ if (i == stuffing && /* right number of stuffing bytes*/
+ (q[4] & 0xc4) == 0x44 && /* marker check */
+ (q[12] & 3) == 3 && /* marker check */
+ q[14 + stuffing] == 0 && /* PES Pack or Sys Hdr */
q[15 + stuffing] == 0 &&
q[16 + stuffing] == 1) {
- cx->search_pack_header = 0;
+ /* We declare we actually found a Program Pack*/
+ cx->search_pack_header = 0; /* expect vid PES */
len = (char *)q - start;
- cx18_setup_sliced_vbi_buf(cx);
+ cx18_setup_sliced_vbi_mdl(cx);
+ *stop = true;
break;
}
}
return len;
}
+static size_t cx18_copy_mdl_to_user(struct cx18_stream *s,
+ struct cx18_mdl *mdl, char __user *ubuf, size_t ucount)
+{
+ size_t tot_written = 0;
+ int rc;
+ bool stop = false;
+
+ if (mdl->curr_buf == NULL)
+ mdl->curr_buf = list_first_entry(&mdl->buf_list,
+ struct cx18_buffer, list);
+
+ if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
+ /*
+ * For some reason we've exhausted the buffers, but the MDL
+ * object still said some data was unread.
+ * Fix that and bail out.
+ */
+ mdl->readpos = mdl->bytesused;
+ return 0;
+ }
+
+ list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {
+
+ if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
+ continue;
+
+ rc = cx18_copy_buf_to_user(s, mdl->curr_buf, ubuf + tot_written,
+ ucount - tot_written, &stop);
+ if (rc < 0)
+ return rc;
+ mdl->readpos += rc;
+ tot_written += rc;
+
+ if (stop || /* Forced stopping point for VBI insertion */
+ tot_written >= ucount || /* Reader request statisfied */
+ mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
+ mdl->readpos >= mdl->bytesused) /* MDL buffers drained */
+ break;
+ }
+ return tot_written;
+}
+
static ssize_t cx18_read(struct cx18_stream *s, char __user *ubuf,
size_t tot_count, int non_block)
{
/* Each VBI buffer is one frame, the v4l2 API says that for VBI the
frames should arrive one-by-one, so make sure we never output more
than one VBI frame at a time */
- if (s->type == CX18_ENC_STREAM_TYPE_VBI &&
- cx->vbi.sliced_in->service_set)
+ if (s->type == CX18_ENC_STREAM_TYPE_VBI && !cx18_raw_vbi(cx))
single_frame = 1;
for (;;) {
- struct cx18_buffer *buf;
+ struct cx18_mdl *mdl;
int rc;
- buf = cx18_get_buffer(s, non_block, &rc);
+ mdl = cx18_get_mdl(s, non_block, &rc);
/* if there is no data available... */
- if (buf == NULL) {
+ if (mdl == NULL) {
/* if we got data, then return that regardless */
if (tot_written)
break;
return rc;
}
- rc = cx18_copy_buf_to_user(s, buf, ubuf + tot_written,
+ rc = cx18_copy_mdl_to_user(s, mdl, ubuf + tot_written,
tot_count - tot_written);
- if (buf != &cx->vbi.sliced_mpeg_buf) {
- if (buf->readpos == buf->bytesused) {
- cx18_buf_sync_for_device(s, buf);
- cx18_enqueue(s, buf, &s->q_free);
- cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5,
- s->handle,
- (void __iomem *)&cx->scb->cpu_mdl[buf->id] -
- cx->enc_mem,
- 1, buf->id, s->buf_size);
- } else
- cx18_push(s, buf, &s->q_full);
- } else if (buf->readpos == buf->bytesused) {
+ if (mdl != &cx->vbi.sliced_mpeg_mdl) {
+ if (mdl->readpos == mdl->bytesused)
+ cx18_stream_put_mdl_fw(s, mdl);
+ else
+ cx18_push(s, mdl, &s->q_full);
+ } else if (mdl->readpos == mdl->bytesused) {
int idx = cx->vbi.inserted_frame % CX18_VBI_FRAMES;
cx->vbi.sliced_mpeg_size[idx] = 0;
cx->vbi.inserted_frame++;
- cx->vbi_data_inserted += buf->bytesused;
+ cx->vbi_data_inserted += mdl->bytesused;
}
if (rc < 0)
return rc;
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
struct cx18_stream *s_vbi;
+ struct cx18_stream *s_idx;
if (s->type == CX18_ENC_STREAM_TYPE_RAD) {
/* you cannot read from these stream types. */
return 0;
}
- /* Start VBI capture if required */
+ /* Start associated VBI or IDX stream capture if required */
s_vbi = &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
- if (s->type == CX18_ENC_STREAM_TYPE_MPG &&
- test_bit(CX18_F_S_INTERNAL_USE, &s_vbi->s_flags) &&
- !test_and_set_bit(CX18_F_S_STREAMING, &s_vbi->s_flags)) {
- /* Note: the CX18_ENC_STREAM_TYPE_VBI is claimed
- automatically when the MPG stream is claimed.
- We only need to start the VBI capturing. */
- if (cx18_start_v4l2_encode_stream(s_vbi)) {
- CX18_DEBUG_WARN("VBI capture start failed\n");
-
- /* Failure, clean up and return an error */
- clear_bit(CX18_F_S_STREAMING, &s_vbi->s_flags);
- clear_bit(CX18_F_S_STREAMING, &s->s_flags);
- /* also releases the associated VBI stream */
- cx18_release_stream(s);
- return -EIO;
+ s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ if (s->type == CX18_ENC_STREAM_TYPE_MPG) {
+ /*
+ * The VBI and IDX streams should have been claimed
+ * automatically, if for internal use, when the MPG stream was
+ * claimed. We only need to start these streams capturing.
+ */
+ if (test_bit(CX18_F_S_INTERNAL_USE, &s_idx->s_flags) &&
+ !test_and_set_bit(CX18_F_S_STREAMING, &s_idx->s_flags)) {
+ if (cx18_start_v4l2_encode_stream(s_idx)) {
+ CX18_DEBUG_WARN("IDX capture start failed\n");
+ clear_bit(CX18_F_S_STREAMING, &s_idx->s_flags);
+ goto start_failed;
+ }
+ CX18_DEBUG_INFO("IDX capture started\n");
+ }
+ if (test_bit(CX18_F_S_INTERNAL_USE, &s_vbi->s_flags) &&
+ !test_and_set_bit(CX18_F_S_STREAMING, &s_vbi->s_flags)) {
+ if (cx18_start_v4l2_encode_stream(s_vbi)) {
+ CX18_DEBUG_WARN("VBI capture start failed\n");
+ clear_bit(CX18_F_S_STREAMING, &s_vbi->s_flags);
+ goto start_failed;
+ }
+ CX18_DEBUG_INFO("VBI insertion started\n");
}
- CX18_DEBUG_INFO("VBI insertion started\n");
}
/* Tell the card to start capturing */
return 0;
}
- /* failure, clean up */
+start_failed:
CX18_DEBUG_WARN("Failed to start capturing for stream %s\n", s->name);
- /* Note: the CX18_ENC_STREAM_TYPE_VBI is released
- automatically when the MPG stream is released.
- We only need to stop the VBI capturing. */
- if (s->type == CX18_ENC_STREAM_TYPE_MPG &&
- test_bit(CX18_F_S_STREAMING, &s_vbi->s_flags)) {
- cx18_stop_v4l2_encode_stream(s_vbi, 0);
- clear_bit(CX18_F_S_STREAMING, &s_vbi->s_flags);
+ /*
+ * The associated VBI and IDX streams for internal use are released
+ * automatically when the MPG stream is released. We only need to stop
+ * the associated stream.
+ */
+ if (s->type == CX18_ENC_STREAM_TYPE_MPG) {
+ /* Stop the IDX stream which is always for internal use */
+ if (test_bit(CX18_F_S_STREAMING, &s_idx->s_flags)) {
+ cx18_stop_v4l2_encode_stream(s_idx, 0);
+ clear_bit(CX18_F_S_STREAMING, &s_idx->s_flags);
+ }
+ /* Stop the VBI stream, if only running for internal use */
+ if (test_bit(CX18_F_S_STREAMING, &s_vbi->s_flags) &&
+ !test_bit(CX18_F_S_APPL_IO, &s_vbi->s_flags)) {
+ cx18_stop_v4l2_encode_stream(s_vbi, 0);
+ clear_bit(CX18_F_S_STREAMING, &s_vbi->s_flags);
+ }
}
clear_bit(CX18_F_S_STREAMING, &s->s_flags);
- cx18_release_stream(s);
+ cx18_release_stream(s); /* Also releases associated streams */
return -EIO;
}
ssize_t cx18_v4l2_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
- struct cx18_open_id *id = filp->private_data;
+ struct cx18_open_id *id = file2id(filp);
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
int rc;
mutex_unlock(&cx->serialize_lock);
if (rc)
return rc;
+
+ if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
+ (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
+ return videobuf_read_stream(&s->vbuf_q, buf, count, pos, 0,
+ filp->f_flags & O_NONBLOCK);
+ }
+
return cx18_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK);
}
unsigned int cx18_v4l2_enc_poll(struct file *filp, poll_table *wait)
{
- struct cx18_open_id *id = filp->private_data;
+ struct cx18_open_id *id = file2id(filp);
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
int eof = test_bit(CX18_F_S_STREAMOFF, &s->s_flags);
CX18_DEBUG_FILE("Encoder poll started capture\n");
}
+ if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
+ (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
+ int videobuf_poll = videobuf_poll_stream(filp, &s->vbuf_q, wait);
+ if (eof && videobuf_poll == POLLERR)
+ return POLLHUP;
+ else
+ return videobuf_poll;
+ }
+
/* add stream's waitq to the poll list */
CX18_DEBUG_HI_FILE("Encoder poll\n");
poll_wait(filp, &s->waitq, wait);
- if (atomic_read(&s->q_full.buffers))
+ if (atomic_read(&s->q_full.depth))
return POLLIN | POLLRDNORM;
if (eof)
return POLLHUP;
return 0;
}
+int cx18_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct cx18_open_id *id = file->private_data;
+ struct cx18 *cx = id->cx;
+ struct cx18_stream *s = &cx->streams[id->type];
+ int eof = test_bit(CX18_F_S_STREAMOFF, &s->s_flags);
+
+ if ((s->vb_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
+ (id->type == CX18_ENC_STREAM_TYPE_YUV)) {
+
+ /* Start a capture if there is none */
+ if (!eof && !test_bit(CX18_F_S_STREAMING, &s->s_flags)) {
+ int rc;
+
+ mutex_lock(&cx->serialize_lock);
+ rc = cx18_start_capture(id);
+ mutex_unlock(&cx->serialize_lock);
+ if (rc) {
+ CX18_DEBUG_INFO(
+ "Could not start capture for %s (%d)\n",
+ s->name, rc);
+ return -EINVAL;
+ }
+ CX18_DEBUG_FILE("Encoder mmap started capture\n");
+ }
+
+ return videobuf_mmap_mapper(&s->vbuf_q, vma);
+ }
+
+ return -EINVAL;
+}
+
+void cx18_vb_timeout(unsigned long data)
+{
+ struct cx18_stream *s = (struct cx18_stream *)data;
+ struct cx18_videobuf_buffer *buf;
+ unsigned long flags;
+
+ /* Return all of the buffers in error state, so the vbi/vid inode
+ * can return from blocking.
+ */
+ spin_lock_irqsave(&s->vb_lock, flags);
+ while (!list_empty(&s->vb_capture)) {
+ buf = list_entry(s->vb_capture.next,
+ struct cx18_videobuf_buffer, vb.queue);
+ list_del(&buf->vb.queue);
+ buf->vb.state = VIDEOBUF_ERROR;
+ wake_up(&buf->vb.done);
+ }
+ spin_unlock_irqrestore(&s->vb_lock, flags);
+}
+
void cx18_stop_capture(struct cx18_open_id *id, int gop_end)
{
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
+ struct cx18_stream *s_vbi = &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
+ struct cx18_stream *s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
CX18_DEBUG_IOCTL("close() of %s\n", s->name);
/* Stop capturing */
if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) {
- struct cx18_stream *s_vbi =
- &cx->streams[CX18_ENC_STREAM_TYPE_VBI];
-
CX18_DEBUG_INFO("close stopping capture\n");
- /* Special case: a running VBI capture for VBI insertion
- in the mpeg stream. Need to stop that too. */
- if (id->type == CX18_ENC_STREAM_TYPE_MPG &&
- test_bit(CX18_F_S_STREAMING, &s_vbi->s_flags) &&
- !test_bit(CX18_F_S_APPL_IO, &s_vbi->s_flags)) {
- CX18_DEBUG_INFO("close stopping embedded VBI capture\n");
- cx18_stop_v4l2_encode_stream(s_vbi, 0);
+ if (id->type == CX18_ENC_STREAM_TYPE_MPG) {
+ /* Stop internal use associated VBI and IDX streams */
+ if (test_bit(CX18_F_S_STREAMING, &s_vbi->s_flags) &&
+ !test_bit(CX18_F_S_APPL_IO, &s_vbi->s_flags)) {
+ CX18_DEBUG_INFO("close stopping embedded VBI "
+ "capture\n");
+ cx18_stop_v4l2_encode_stream(s_vbi, 0);
+ }
+ if (test_bit(CX18_F_S_STREAMING, &s_idx->s_flags)) {
+ CX18_DEBUG_INFO("close stopping IDX capture\n");
+ cx18_stop_v4l2_encode_stream(s_idx, 0);
+ }
}
if (id->type == CX18_ENC_STREAM_TYPE_VBI &&
test_bit(CX18_F_S_INTERNAL_USE, &s->s_flags))
}
}
-int cx18_v4l2_close(struct inode *inode, struct file *filp)
+int cx18_v4l2_close(struct file *filp)
{
- struct cx18_open_id *id = filp->private_data;
+ struct v4l2_fh *fh = filp->private_data;
+ struct cx18_open_id *id = fh2id(fh);
struct cx18 *cx = id->cx;
struct cx18_stream *s = &cx->streams[id->type];
CX18_DEBUG_IOCTL("close() of %s\n", s->name);
- v4l2_prio_close(&cx->prio, &id->prio);
+ v4l2_fh_del(fh);
+ v4l2_fh_exit(fh);
/* Easy case first: this stream was never claimed by us */
if (s->id != id->open_id) {
/* Mark that the radio is no longer in use */
clear_bit(CX18_F_I_RADIO_USER, &cx->i_flags);
/* Switch tuner to TV */
- cx18_call_i2c_clients(cx, VIDIOC_S_STD, &cx->std);
+ cx18_call_all(cx, core, s_std, cx->std);
/* Select correct audio input (i.e. TV tuner or Line in) */
cx18_audio_set_io(cx);
if (atomic_read(&cx->ana_capturing) > 0) {
/* Undo video mute */
cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
- cx->params.video_mute |
- (cx->params.video_mute_yuv << 8));
+ (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute) |
+ (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8)));
}
/* Done! Unmute and continue. */
cx18_unmute(cx);
cx18_release_stream(s);
} else {
cx18_stop_capture(id, 0);
+ if (id->type == CX18_ENC_STREAM_TYPE_YUV)
+ videobuf_mmap_free(&id->vbuf_q);
}
kfree(id);
mutex_unlock(&cx->serialize_lock);
CX18_DEBUG_FILE("open %s\n", s->name);
/* Allocate memory */
- item = kmalloc(sizeof(struct cx18_open_id), GFP_KERNEL);
+ item = kzalloc(sizeof(struct cx18_open_id), GFP_KERNEL);
if (NULL == item) {
CX18_DEBUG_WARN("nomem on v4l2 open\n");
return -ENOMEM;
}
+ v4l2_fh_init(&item->fh, s->video_dev);
+
item->cx = cx;
item->type = s->type;
- v4l2_prio_open(&cx->prio, &item->prio);
item->open_id = cx->open_id++;
- filp->private_data = item;
+ filp->private_data = &item->fh;
if (item->type == CX18_ENC_STREAM_TYPE_RAD) {
/* Try to claim this stream */
if (cx18_claim_stream(item, item->type)) {
/* No, it's already in use */
+ v4l2_fh_exit(&item->fh);
kfree(item);
return -EBUSY;
}
/* switching to radio while capture is
in progress is not polite */
cx18_release_stream(s);
+ v4l2_fh_exit(&item->fh);
kfree(item);
return -EBUSY;
}
/* We have the radio */
cx18_mute(cx);
/* Switch tuner to radio */
- cx18_call_i2c_clients(cx, AUDC_SET_RADIO, NULL);
+ cx18_call_all(cx, tuner, s_radio);
/* Select the correct audio input (i.e. radio tuner) */
cx18_audio_set_io(cx);
/* Done! Unmute and continue. */
cx18_unmute(cx);
}
+ v4l2_fh_add(&item->fh);
return 0;
}
-int cx18_v4l2_open(struct inode *inode, struct file *filp)
+int cx18_v4l2_open(struct file *filp)
{
- int res, x, y = 0;
- struct cx18 *cx = NULL;
- struct cx18_stream *s = NULL;
- int minor = iminor(inode);
-
- /* Find which card this open was on */
- spin_lock(&cx18_cards_lock);
- for (x = 0; cx == NULL && x < cx18_cards_active; x++) {
- /* find out which stream this open was on */
- for (y = 0; y < CX18_MAX_STREAMS; y++) {
- if (cx18_cards[x] == NULL)
- continue;
- s = &cx18_cards[x]->streams[y];
- if (s->v4l2dev && s->v4l2dev->minor == minor) {
- cx = cx18_cards[x];
- break;
- }
- }
- }
- spin_unlock(&cx18_cards_lock);
-
- if (cx == NULL) {
- /* Couldn't find a device registered
- on that minor, shouldn't happen! */
- printk(KERN_WARNING "No cx18 device found on minor %d\n",
- minor);
- return -ENXIO;
- }
+ int res;
+ struct video_device *video_dev = video_devdata(filp);
+ struct cx18_stream *s = video_get_drvdata(video_dev);
+ struct cx18 *cx = s->cx;
mutex_lock(&cx->serialize_lock);
if (cx18_init_on_first_open(cx)) {
- CX18_ERR("Failed to initialize on minor %d\n", minor);
+ CX18_ERR("Failed to initialize on %s\n",
+ video_device_node_name(video_dev));
mutex_unlock(&cx->serialize_lock);
return -ENXIO;
}
Code Review / linux-2.6.git / blobdiff