* Derived from ivtv-streams.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
s->dma = cx18_stream_info[type].dma;
s->buffers = cx->stream_buffers[type];
s->buf_size = cx->stream_buf_size[type];
+ INIT_LIST_HEAD(&s->buf_pool);
+ s->bufs_per_mdl = 1;
+ s->mdl_size = s->buf_size * s->bufs_per_mdl;
- mutex_init(&s->qlock);
init_waitqueue_head(&s->waitq);
s->id = -1;
+ spin_lock_init(&s->q_free.lock);
cx18_queue_init(&s->q_free);
+ spin_lock_init(&s->q_busy.lock);
cx18_queue_init(&s->q_busy);
+ spin_lock_init(&s->q_full.lock);
cx18_queue_init(&s->q_full);
+ spin_lock_init(&s->q_idle.lock);
+ cx18_queue_init(&s->q_idle);
+
+ INIT_WORK(&s->out_work_order, cx18_out_work_handler);
}
static int cx18_prep_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
int vfl_type = cx18_stream_info[type].vfl_type;
+ const char *name;
int num, ret;
/* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something?
video_set_drvdata(s->video_dev, s);
/* Register device. First try the desired minor, then any free one. */
- ret = video_register_device(s->video_dev, vfl_type, num);
+ ret = video_register_device_no_warn(s->video_dev, vfl_type, num);
if (ret < 0) {
- CX18_ERR("Couldn't register v4l2 device for %s kernel number %d\n",
+ CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
s->name, num);
video_device_release(s->video_dev);
s->video_dev = NULL;
return ret;
}
- num = s->video_dev->num;
+
+ name = video_device_node_name(s->video_dev);
switch (vfl_type) {
case VFL_TYPE_GRABBER:
- CX18_INFO("Registered device video%d for %s (%d x %d kB)\n",
- num, s->name, cx->stream_buffers[type],
- cx->stream_buf_size[type]/1024);
+ CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n",
+ name, s->name, cx->stream_buffers[type],
+ cx->stream_buf_size[type] / 1024,
+ (cx->stream_buf_size[type] * 100 / 1024) % 100);
break;
case VFL_TYPE_RADIO:
- CX18_INFO("Registered device radio%d for %s\n",
- num, s->name);
+ CX18_INFO("Registered device %s for %s\n", name, s->name);
break;
case VFL_TYPE_VBI:
if (cx->stream_buffers[type])
- CX18_INFO("Registered device vbi%d for %s "
+ CX18_INFO("Registered device %s for %s "
"(%d x %d bytes)\n",
- num, s->name, cx->stream_buffers[type],
+ name, s->name, cx->stream_buffers[type],
cx->stream_buf_size[type]);
else
- CX18_INFO("Registered device vbi%d for %s\n",
- num, s->name);
+ CX18_INFO("Registered device %s for %s\n",
+ name, s->name);
break;
}
/* Teardown all streams */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
- if (cx->streams[type].dvb.enabled) {
- cx18_dvb_unregister(&cx->streams[type]);
- cx->streams[type].dvb.enabled = false;
+
+ /* No struct video_device, but can have buffers allocated */
+ if (type == CX18_ENC_STREAM_TYPE_TS) {
+ if (cx->streams[type].dvb.enabled) {
+ cx18_dvb_unregister(&cx->streams[type]);
+ cx->streams[type].dvb.enabled = false;
+ cx18_stream_free(&cx->streams[type]);
+ }
+ continue;
}
+ /* No struct video_device, but can have buffers allocated */
+ if (type == CX18_ENC_STREAM_TYPE_IDX) {
+ if (cx->stream_buffers[type] != 0) {
+ cx->stream_buffers[type] = 0;
+ cx18_stream_free(&cx->streams[type]);
+ }
+ continue;
+ }
+
+ /* If struct video_device exists, can have buffers allocated */
vdev = cx->streams[type].video_dev;
cx->streams[type].video_dev = NULL;
}
/* setup VBI registers */
- v4l2_subdev_call(cx->sd_av, video, s_fmt, &cx->vbi.in);
+ if (raw)
+ v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi);
+ else
+ v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced);
/*
* Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw
* Tell the encoder to capture 21-4+1=18 lines per field,
* since we want lines 10 through 21.
*
- * FIXME - revisit for 625/50 systems
+ * For 625/50 systems, according to the VIP 2 & BT.656 std:
+ * The EAV RP code's Field bit toggles on line 1, a few lines
+ * after the Vertcal Blank bit has already toggled.
+ * (We've actually set the digitizer so that the Field bit
+ * toggles on line 2.) Tell the encoder to capture 23-2+1=22
+ * lines per field, since we want lines 6 through 23.
*/
- lines = cx->is_60hz ? (21 - 4 + 1) * 2 : 38;
+ lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2;
}
data[0] = s->handle;
cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data);
}
-struct cx18_queue *cx18_stream_put_buf_fw(struct cx18_stream *s,
- struct cx18_buffer *buf)
+void cx18_stream_rotate_idx_mdls(struct cx18 *cx)
+{
+ struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ struct cx18_mdl *mdl;
+
+ if (!cx18_stream_enabled(s))
+ return;
+
+ /* Return if the firmware is not running low on MDLs */
+ if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >=
+ CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN)
+ return;
+
+ /* Return if there are no MDLs to rotate back to the firmware */
+ if (atomic_read(&s->q_full.depth) < 2)
+ return;
+
+ /*
+ * Take the oldest IDX MDL still holding data, and discard its index
+ * entries by scheduling the MDL to go back to the firmware
+ */
+ mdl = cx18_dequeue(s, &s->q_full);
+ if (mdl != NULL)
+ cx18_enqueue(s, mdl, &s->q_free);
+}
+
+static
+struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s,
+ struct cx18_mdl *mdl)
{
struct cx18 *cx = s->cx;
struct cx18_queue *q;
/* Don't give it to the firmware, if we're not running a capture */
if (s->handle == CX18_INVALID_TASK_HANDLE ||
+ test_bit(CX18_F_S_STOPPING, &s->s_flags) ||
!test_bit(CX18_F_S_STREAMING, &s->s_flags))
- return cx18_enqueue(s, buf, &s->q_free);
+ return cx18_enqueue(s, mdl, &s->q_free);
- q = cx18_enqueue(s, buf, &s->q_busy);
+ q = cx18_enqueue(s, mdl, &s->q_busy);
if (q != &s->q_busy)
- return q; /* The firmware has the max buffers it can handle */
+ return q; /* The firmware has the max MDLs it can handle */
- cx18_buf_sync_for_device(s, buf);
+ cx18_mdl_sync_for_device(s, mdl);
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);
+ (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem,
+ s->bufs_per_mdl, mdl->id, s->mdl_size);
return q;
}
-void cx18_stream_load_fw_queue(struct cx18_stream *s)
+static
+void _cx18_stream_load_fw_queue(struct cx18_stream *s)
{
struct cx18_queue *q;
- struct cx18_buffer *buf;
+ struct cx18_mdl *mdl;
- if (atomic_read(&s->q_free.buffers) == 0 ||
- atomic_read(&s->q_busy.buffers) >= CX18_MAX_FW_MDLS_PER_STREAM)
+ if (atomic_read(&s->q_free.depth) == 0 ||
+ atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM)
return;
/* Move from q_free to q_busy notifying the firmware, until the limit */
do {
- buf = cx18_dequeue(s, &s->q_free);
- if (buf == NULL)
+ mdl = cx18_dequeue(s, &s->q_free);
+ if (mdl == NULL)
break;
- q = cx18_stream_put_buf_fw(s, buf);
- } while (atomic_read(&s->q_busy.buffers) < CX18_MAX_FW_MDLS_PER_STREAM
+ q = _cx18_stream_put_mdl_fw(s, mdl);
+ } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM
&& q == &s->q_busy);
}
+void cx18_out_work_handler(struct work_struct *work)
+{
+ struct cx18_stream *s =
+ container_of(work, struct cx18_stream, out_work_order);
+
+ _cx18_stream_load_fw_queue(s);
+}
+
+static void cx18_stream_configure_mdls(struct cx18_stream *s)
+{
+ cx18_unload_queues(s);
+
+ switch (s->type) {
+ case CX18_ENC_STREAM_TYPE_YUV:
+ /*
+ * Height should be a multiple of 32 lines.
+ * Set the MDL size to the exact size needed for one frame.
+ * Use enough buffers per MDL to cover the MDL size
+ */
+ s->mdl_size = 720 * s->cx->params.height * 3 / 2;
+ s->bufs_per_mdl = s->mdl_size / s->buf_size;
+ if (s->mdl_size % s->buf_size)
+ s->bufs_per_mdl++;
+ break;
+ case CX18_ENC_STREAM_TYPE_VBI:
+ s->bufs_per_mdl = 1;
+ if (cx18_raw_vbi(s->cx)) {
+ s->mdl_size = (s->cx->is_60hz ? 12 : 18)
+ * 2 * vbi_active_samples;
+ } else {
+ /*
+ * See comment in cx18_vbi_setup() below about the
+ * extra lines we capture in sliced VBI mode due to
+ * the lines on which EAV RP codes toggle.
+ */
+ s->mdl_size = s->cx->is_60hz
+ ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
+ : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
+ }
+ break;
+ default:
+ s->bufs_per_mdl = 1;
+ s->mdl_size = s->buf_size * s->bufs_per_mdl;
+ break;
+ }
+
+ cx18_load_queues(s);
+}
+
int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
{
u32 data[MAX_MB_ARGUMENTS];
struct cx18 *cx = s->cx;
- struct cx18_buffer *buf;
int captype = 0;
struct cx18_api_func_private priv;
+ struct cx18_stream *s_idx;
- if (s->video_dev == NULL && s->dvb.enabled == 0)
+ if (!cx18_stream_enabled(s))
return -EINVAL;
CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
cx->search_pack_header = 0;
break;
+ case CX18_ENC_STREAM_TYPE_IDX:
+ captype = CAPTURE_CHANNEL_TYPE_INDEX;
+ break;
case CX18_ENC_STREAM_TYPE_TS:
captype = CAPTURE_CHANNEL_TYPE_TS;
break;
cx18_vbi_setup(s);
/*
- * assign program index info.
- * Mask 7: select I/P/B, Num_req: 400 max
- * FIXME - currently we have this hardcoded as disabled
+ * Select to receive I, P, and B frame index entries, if the
+ * index stream is enabled. Otherwise disable index entry
+ * generation.
*/
- cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0);
+ s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
+ cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2,
+ s->handle, cx18_stream_enabled(s_idx) ? 7 : 0);
/* Call out to the common CX2341x API setup for user controls */
priv.cx = cx;
(void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);
/* Init all the cpu_mdls for this stream */
- cx18_flush_queues(s);
- mutex_lock(&s->qlock);
- list_for_each_entry(buf, &s->q_free.list, list) {
- cx18_writel(cx, buf->dma_handle,
- &cx->scb->cpu_mdl[buf->id].paddr);
- cx18_writel(cx, s->buf_size, &cx->scb->cpu_mdl[buf->id].length);
- }
- mutex_unlock(&s->qlock);
- cx18_stream_load_fw_queue(s);
+ cx18_stream_configure_mdls(s);
+ _cx18_stream_load_fw_queue(s);
/* begin_capture */
if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
CX18_DEBUG_WARN("Error starting capture!\n");
/* Ensure we're really not capturing before releasing MDLs */
+ set_bit(CX18_F_S_STOPPING, &s->s_flags);
if (s->type == CX18_ENC_STREAM_TYPE_MPG)
cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
else
cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
s->handle = CX18_INVALID_TASK_HANDLE;
+ clear_bit(CX18_F_S_STOPPING, &s->s_flags);
if (atomic_read(&cx->tot_capturing) == 0) {
set_bit(CX18_F_I_EOS, &cx->i_flags);
cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
atomic_inc(&cx->tot_capturing);
return 0;
}
+EXPORT_SYMBOL(cx18_start_v4l2_encode_stream);
void cx18_stop_all_captures(struct cx18 *cx)
{
for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
struct cx18_stream *s = &cx->streams[i];
- if (s->video_dev == NULL && s->dvb.enabled == 0)
+ if (!cx18_stream_enabled(s))
continue;
if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
cx18_stop_v4l2_encode_stream(s, 0);
struct cx18 *cx = s->cx;
unsigned long then;
- if (s->video_dev == NULL && s->dvb.enabled == 0)
+ if (!cx18_stream_enabled(s))
return -EINVAL;
/* This function assumes that you are allowed to stop the capture
if (atomic_read(&cx->tot_capturing) == 0)
return 0;
+ set_bit(CX18_F_S_STOPPING, &s->s_flags);
if (s->type == CX18_ENC_STREAM_TYPE_MPG)
cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end);
else
cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
s->handle = CX18_INVALID_TASK_HANDLE;
+ clear_bit(CX18_F_S_STOPPING, &s->s_flags);
if (atomic_read(&cx->tot_capturing) > 0)
return 0;
return 0;
}
+EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream);
u32 cx18_find_handle(struct cx18 *cx)
{
s = &cx->streams[i];
if (s->handle != handle)
continue;
- if (s->video_dev || s->dvb.enabled)
+ if (cx18_stream_enabled(s))
return s;
}
return NULL;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff