* Derived from ivtv-fileops.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+ * Copyright (C) 2008 Andy Walls <awalls@radix.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
}
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
+ /* 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) {
+ cx->vbi.insert_mpeg && !cx18_raw_vbi(cx)) {
vbi_type = CX18_ENC_STREAM_TYPE_VBI;
} else {
return 0;
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 new_bitmap;
+ u32 new_stereo_mode;
+ const u32 stereo_mask = 0x0300;
+ const u32 dual = 0x0200;
+ u32 h;
new_stereo_mode = cx->params.audio_properties & stereo_mask;
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);
+ 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);
+ 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);
- if (cx18_vapi(cx, CX18_CPU_SET_AUDIO_PARAMETERS, 2,
- cx18_find_handle(cx), new_bitmap) == 0) {
+ 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;
}
*err = 0;
while (1) {
if (s->type == CX18_ENC_STREAM_TYPE_MPG) {
+ /* Process pending program info updates and pending
+ VBI data */
if (time_after(jiffies, cx->dualwatch_jiffies + msecs_to_jiffies(1000))) {
cx->dualwatch_jiffies = jiffies;
!test_bit(CX18_F_S_APPL_IO, &s_vbi->s_flags)) {
while ((buf = 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, buf,
+ s_vbi->type);
+ cx18_stream_put_buf_fw(s_vbi, buf);
}
}
buf = &cx->vbi.sliced_mpeg_buf;
return buf;
}
- /* do we have leftover data? */
- buf = cx18_dequeue(s, &s->q_io);
- if (buf)
- return buf;
-
/* do we have new data? */
buf = cx18_dequeue(s, &s->q_full);
if (buf) {
cx18_buf_swap(buf);
else {
/* byteswap and process VBI data */
- cx18_process_vbi_data(cx, buf,
- s->dma_pts, s->type);
+ cx18_process_vbi_data(cx, buf, s->type);
}
return buf;
}
prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE);
/* New buffers might have become available before we were added
to the waitqueue */
- if (!s->q_full.buffers)
+ if (!atomic_read(&s->q_full.buffers))
schedule();
finish_wait(&s->waitq, &wait);
if (signal_pending(current)) {
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.
+ */
+ /* FIXME - This only works for an MPEG-2 PS, not a TS */
+ /*
+ * 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);
break;
/* 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 (;;) {
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_enqueue(s, buf, &s->q_io);
+ if (buf->readpos == buf->bytesused)
+ cx18_stream_put_buf_fw(s, buf);
+ else
+ cx18_push(s, buf, &s->q_full);
} else if (buf->readpos == buf->bytesused) {
int idx = cx->vbi.inserted_frame % CX18_VBI_FRAMES;
CX18_DEBUG_HI_FILE("Encoder poll\n");
poll_wait(filp, &s->waitq, wait);
- if (s->q_full.buffers || s->q_io.buffers)
+ if (atomic_read(&s->q_full.buffers))
return POLLIN | POLLRDNORM;
if (eof)
return POLLHUP;
}
}
-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 cx18 *cx = id->cx;
/* 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, tuner, 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) {
/* 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. */
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 minor %d\n",
+ video_dev->minor);
mutex_unlock(&cx->serialize_lock);
return -ENXIO;
}
void cx18_mute(struct cx18 *cx)
{
- if (atomic_read(&cx->ana_capturing))
- cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2,
- cx18_find_handle(cx), 1);
+ u32 h;
+ if (atomic_read(&cx->ana_capturing)) {
+ h = cx18_find_handle(cx);
+ if (h != CX18_INVALID_TASK_HANDLE)
+ cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2, h, 1);
+ else
+ CX18_ERR("Can't find valid task handle for mute\n");
+ }
CX18_DEBUG_INFO("Mute\n");
}
void cx18_unmute(struct cx18 *cx)
{
+ u32 h;
if (atomic_read(&cx->ana_capturing)) {
- cx18_msleep_timeout(100, 0);
- cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
- cx18_find_handle(cx), 12);
- cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2,
- cx18_find_handle(cx), 0);
+ h = cx18_find_handle(cx);
+ if (h != CX18_INVALID_TASK_HANDLE) {
+ cx18_msleep_timeout(100, 0);
+ cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, h, 12);
+ cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2, h, 0);
+ } else
+ CX18_ERR("Can't find valid task handle for unmute\n");
}
CX18_DEBUG_INFO("Unmute\n");
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff