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Diffstat (limited to 'drivers/media/video/cx18/cx18-streams.c')
-rw-r--r--drivers/media/video/cx18/cx18-streams.c654
1 files changed, 0 insertions, 654 deletions
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
deleted file mode 100644
index 89c1ec94f33..00000000000
--- a/drivers/media/video/cx18/cx18-streams.c
+++ /dev/null
@@ -1,654 +0,0 @@
-/*
- * cx18 init/start/stop/exit stream functions
- *
- * Derived from ivtv-streams.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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
- */
-
-#include "cx18-driver.h"
-#include "cx18-io.h"
-#include "cx18-fileops.h"
-#include "cx18-mailbox.h"
-#include "cx18-i2c.h"
-#include "cx18-queue.h"
-#include "cx18-ioctl.h"
-#include "cx18-streams.h"
-#include "cx18-cards.h"
-#include "cx18-scb.h"
-#include "cx18-av-core.h"
-#include "cx18-dvb.h"
-
-#define CX18_DSP0_INTERRUPT_MASK 0xd0004C
-
-static struct v4l2_file_operations cx18_v4l2_enc_fops = {
- .owner = THIS_MODULE,
- .read = cx18_v4l2_read,
- .open = cx18_v4l2_open,
- /* FIXME change to video_ioctl2 if serialization lock can be removed */
- .ioctl = cx18_v4l2_ioctl,
- .release = cx18_v4l2_close,
- .poll = cx18_v4l2_enc_poll,
-};
-
-/* offset from 0 to register ts v4l2 minors on */
-#define CX18_V4L2_ENC_TS_OFFSET 16
-/* offset from 0 to register pcm v4l2 minors on */
-#define CX18_V4L2_ENC_PCM_OFFSET 24
-/* offset from 0 to register yuv v4l2 minors on */
-#define CX18_V4L2_ENC_YUV_OFFSET 32
-
-static struct {
- const char *name;
- int vfl_type;
- int num_offset;
- int dma;
- enum v4l2_buf_type buf_type;
-} cx18_stream_info[] = {
- { /* CX18_ENC_STREAM_TYPE_MPG */
- "encoder MPEG",
- VFL_TYPE_GRABBER, 0,
- PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
- },
- { /* CX18_ENC_STREAM_TYPE_TS */
- "TS",
- VFL_TYPE_GRABBER, -1,
- PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
- },
- { /* CX18_ENC_STREAM_TYPE_YUV */
- "encoder YUV",
- VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET,
- PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
- },
- { /* CX18_ENC_STREAM_TYPE_VBI */
- "encoder VBI",
- VFL_TYPE_VBI, 0,
- PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VBI_CAPTURE,
- },
- { /* CX18_ENC_STREAM_TYPE_PCM */
- "encoder PCM audio",
- VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET,
- PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_PRIVATE,
- },
- { /* CX18_ENC_STREAM_TYPE_IDX */
- "encoder IDX",
- VFL_TYPE_GRABBER, -1,
- PCI_DMA_FROMDEVICE, V4L2_BUF_TYPE_VIDEO_CAPTURE,
- },
- { /* CX18_ENC_STREAM_TYPE_RAD */
- "encoder radio",
- VFL_TYPE_RADIO, 0,
- PCI_DMA_NONE, V4L2_BUF_TYPE_PRIVATE,
- },
-};
-
-static void cx18_stream_init(struct cx18 *cx, int type)
-{
- struct cx18_stream *s = &cx->streams[type];
- struct video_device *dev = s->v4l2dev;
-
- /* we need to keep v4l2dev, so restore it afterwards */
- memset(s, 0, sizeof(*s));
- s->v4l2dev = dev;
-
- /* initialize cx18_stream fields */
- s->cx = cx;
- s->type = type;
- s->name = cx18_stream_info[type].name;
- s->handle = CX18_INVALID_TASK_HANDLE;
-
- s->dma = cx18_stream_info[type].dma;
- s->buffers = cx->stream_buffers[type];
- s->buf_size = cx->stream_buf_size[type];
-
- mutex_init(&s->qlock);
- init_waitqueue_head(&s->waitq);
- s->id = -1;
- cx18_queue_init(&s->q_free);
- cx18_queue_init(&s->q_busy);
- cx18_queue_init(&s->q_full);
-}
-
-static int cx18_prep_dev(struct cx18 *cx, int type)
-{
- struct cx18_stream *s = &cx->streams[type];
- u32 cap = cx->v4l2_cap;
- int num_offset = cx18_stream_info[type].num_offset;
- int num = cx->num + cx18_first_minor + num_offset;
-
- /* These four fields are always initialized. If v4l2dev == NULL, then
- this stream is not in use. In that case no other fields but these
- four can be used. */
- s->v4l2dev = NULL;
- s->cx = cx;
- s->type = type;
- s->name = cx18_stream_info[type].name;
-
- /* Check whether the radio is supported */
- if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO))
- return 0;
-
- /* Check whether VBI is supported */
- if (type == CX18_ENC_STREAM_TYPE_VBI &&
- !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE)))
- return 0;
-
- /* User explicitly selected 0 buffers for these streams, so don't
- create them. */
- if (cx18_stream_info[type].dma != PCI_DMA_NONE &&
- cx->stream_buffers[type] == 0) {
- CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name);
- return 0;
- }
-
- cx18_stream_init(cx, type);
-
- if (num_offset == -1)
- return 0;
-
- /* allocate and initialize the v4l2 video device structure */
- s->v4l2dev = video_device_alloc();
- if (s->v4l2dev == NULL) {
- CX18_ERR("Couldn't allocate v4l2 video_device for %s\n",
- s->name);
- return -ENOMEM;
- }
-
- snprintf(s->v4l2dev->name, sizeof(s->v4l2dev->name), "cx18-%d",
- cx->num);
-
- s->v4l2dev->num = num;
- s->v4l2dev->parent = &cx->dev->dev;
- s->v4l2dev->fops = &cx18_v4l2_enc_fops;
- s->v4l2dev->release = video_device_release;
- s->v4l2dev->tvnorms = V4L2_STD_ALL;
- cx18_set_funcs(s->v4l2dev);
- return 0;
-}
-
-/* Initialize v4l2 variables and register v4l2 devices */
-int cx18_streams_setup(struct cx18 *cx)
-{
- int type, ret;
-
- /* Setup V4L2 Devices */
- for (type = 0; type < CX18_MAX_STREAMS; type++) {
- /* Prepare device */
- ret = cx18_prep_dev(cx, type);
- if (ret < 0)
- break;
-
- /* Allocate Stream */
- ret = cx18_stream_alloc(&cx->streams[type]);
- if (ret < 0)
- break;
- }
- if (type == CX18_MAX_STREAMS)
- return 0;
-
- /* One or more streams could not be initialized. Clean 'em all up. */
- cx18_streams_cleanup(cx, 0);
- return ret;
-}
-
-static int cx18_reg_dev(struct cx18 *cx, int type)
-{
- struct cx18_stream *s = &cx->streams[type];
- int vfl_type = cx18_stream_info[type].vfl_type;
- int num, ret;
-
- /* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something?
- * We need a VFL_TYPE_TS defined.
- */
- if (strcmp("TS", s->name) == 0) {
- /* just return if no DVB is supported */
- if ((cx->card->hw_all & CX18_HW_DVB) == 0)
- return 0;
- ret = cx18_dvb_register(s);
- if (ret < 0) {
- CX18_ERR("DVB failed to register\n");
- return ret;
- }
- }
-
- if (s->v4l2dev == NULL)
- return 0;
-
- num = s->v4l2dev->num;
- /* card number + user defined offset + device offset */
- if (type != CX18_ENC_STREAM_TYPE_MPG) {
- struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
-
- if (s_mpg->v4l2dev)
- num = s_mpg->v4l2dev->num + cx18_stream_info[type].num_offset;
- }
-
- /* Register device. First try the desired minor, then any free one. */
- ret = video_register_device(s->v4l2dev, vfl_type, num);
- if (ret < 0) {
- CX18_ERR("Couldn't register v4l2 device for %s kernel number %d\n",
- s->name, num);
- video_device_release(s->v4l2dev);
- s->v4l2dev = NULL;
- return ret;
- }
- num = s->v4l2dev->num;
-
- 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);
- break;
-
- case VFL_TYPE_RADIO:
- CX18_INFO("Registered device radio%d for %s\n",
- num, s->name);
- break;
-
- case VFL_TYPE_VBI:
- if (cx->stream_buffers[type])
- CX18_INFO("Registered device vbi%d for %s "
- "(%d x %d bytes)\n",
- num, s->name, cx->stream_buffers[type],
- cx->stream_buf_size[type]);
- else
- CX18_INFO("Registered device vbi%d for %s\n",
- num, s->name);
- break;
- }
-
- return 0;
-}
-
-/* Register v4l2 devices */
-int cx18_streams_register(struct cx18 *cx)
-{
- int type;
- int err;
- int ret = 0;
-
- /* Register V4L2 devices */
- for (type = 0; type < CX18_MAX_STREAMS; type++) {
- err = cx18_reg_dev(cx, type);
- if (err && ret == 0)
- ret = err;
- }
-
- if (ret == 0)
- return 0;
-
- /* One or more streams could not be initialized. Clean 'em all up. */
- cx18_streams_cleanup(cx, 1);
- return ret;
-}
-
-/* Unregister v4l2 devices */
-void cx18_streams_cleanup(struct cx18 *cx, int unregister)
-{
- struct video_device *vdev;
- int type;
-
- /* 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;
- }
-
- vdev = cx->streams[type].v4l2dev;
-
- cx->streams[type].v4l2dev = NULL;
- if (vdev == NULL)
- continue;
-
- cx18_stream_free(&cx->streams[type]);
-
- /* Unregister or release device */
- if (unregister)
- video_unregister_device(vdev);
- else
- video_device_release(vdev);
- }
-}
-
-static void cx18_vbi_setup(struct cx18_stream *s)
-{
- struct cx18 *cx = s->cx;
- int raw = cx18_raw_vbi(cx);
- u32 data[CX2341X_MBOX_MAX_DATA];
- int lines;
-
- if (cx->is_60hz) {
- cx->vbi.count = 12;
- cx->vbi.start[0] = 10;
- cx->vbi.start[1] = 273;
- } else { /* PAL/SECAM */
- cx->vbi.count = 18;
- cx->vbi.start[0] = 6;
- cx->vbi.start[1] = 318;
- }
-
- /* setup VBI registers */
- cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in);
-
- /* determine number of lines and total number of VBI bytes.
- A raw line takes 1444 bytes: 4 byte SAV code + 2 * 720
- A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
- header, 42 data bytes + checksum (to be confirmed) */
- if (raw) {
- lines = cx->vbi.count * 2;
- } else {
- lines = cx->is_60hz ? 24 : 38;
- if (cx->is_60hz)
- lines += 2;
- }
-
- cx->vbi.enc_size = lines *
- (raw ? cx->vbi.raw_size : cx->vbi.sliced_size);
-
- data[0] = s->handle;
- /* Lines per field */
- data[1] = (lines / 2) | ((lines / 2) << 16);
- /* bytes per line */
- data[2] = (raw ? cx->vbi.raw_decoder_line_size
- : cx->vbi.sliced_decoder_line_size);
- /* Every X number of frames a VBI interrupt arrives
- (frames as in 25 or 30 fps) */
- data[3] = 1;
- /* Setup VBI for the cx25840 digitizer */
- if (raw) {
- data[4] = 0x20602060;
- data[5] = 0x307090d0;
- } else {
- data[4] = 0xB0F0B0F0;
- data[5] = 0xA0E0A0E0;
- }
-
- CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n",
- data[0], data[1], data[2], data[3], data[4], data[5]);
-
- if (s->type == CX18_ENC_STREAM_TYPE_VBI)
- 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)
-{
- 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_STREAMING, &s->s_flags))
- return cx18_enqueue(s, buf, &s->q_free);
-
- q = cx18_enqueue(s, buf, &s->q_busy);
- if (q != &s->q_busy)
- return q; /* The firmware has the max buffers it can handle */
-
- cx18_buf_sync_for_device(s, buf);
- 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);
- return q;
-}
-
-void cx18_stream_load_fw_queue(struct cx18_stream *s)
-{
- struct cx18_queue *q;
- struct cx18_buffer *buf;
-
- if (atomic_read(&s->q_free.buffers) == 0 ||
- atomic_read(&s->q_busy.buffers) >= 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)
- break;
- q = cx18_stream_put_buf_fw(s, buf);
- } while (atomic_read(&s->q_busy.buffers) < CX18_MAX_FW_MDLS_PER_STREAM
- && q == &s->q_busy);
-}
-
-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 ts = 0;
- int captype = 0;
-
- if (s->v4l2dev == NULL && s->dvb.enabled == 0)
- return -EINVAL;
-
- CX18_DEBUG_INFO("Start encoder stream %s\n", s->name);
-
- switch (s->type) {
- case CX18_ENC_STREAM_TYPE_MPG:
- captype = CAPTURE_CHANNEL_TYPE_MPEG;
- cx->mpg_data_received = cx->vbi_data_inserted = 0;
- cx->dualwatch_jiffies = jiffies;
- cx->dualwatch_stereo_mode = cx->params.audio_properties & 0x300;
- cx->search_pack_header = 0;
- break;
-
- case CX18_ENC_STREAM_TYPE_TS:
- captype = CAPTURE_CHANNEL_TYPE_TS;
- ts = 1;
- break;
- case CX18_ENC_STREAM_TYPE_YUV:
- captype = CAPTURE_CHANNEL_TYPE_YUV;
- break;
- case CX18_ENC_STREAM_TYPE_PCM:
- captype = CAPTURE_CHANNEL_TYPE_PCM;
- break;
- case CX18_ENC_STREAM_TYPE_VBI:
- captype = cx18_raw_vbi(cx) ?
- CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI;
- cx->vbi.frame = 0;
- cx->vbi.inserted_frame = 0;
- memset(cx->vbi.sliced_mpeg_size,
- 0, sizeof(cx->vbi.sliced_mpeg_size));
- break;
- default:
- return -EINVAL;
- }
-
- /* mute/unmute video */
- cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2,
- s->handle, !!test_bit(CX18_F_I_RADIO_USER, &cx->i_flags));
-
- /* Clear Streamoff flags in case left from last capture */
- clear_bit(CX18_F_S_STREAMOFF, &s->s_flags);
-
- cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE);
- s->handle = data[0];
- cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype);
-
- if (atomic_read(&cx->ana_capturing) == 0 && !ts) {
- struct cx18_api_func_private priv;
-
- /* Stuff from Windows, we don't know what it is */
- cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0);
- cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1);
- cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0);
- cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);
- cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, s->handle, 12);
-
- cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
- s->handle, cx->digitizer, cx->digitizer);
-
- /* Setup VBI */
- if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
- cx18_vbi_setup(s);
-
- /* assign program index info.
- Mask 7: select I/P/B, Num_req: 400 max */
- cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 1, 0);
-
- /* Setup API for Stream */
- priv.cx = cx;
- priv.s = s;
- cx2341x_update(&priv, cx18_api_func, NULL, &cx->params);
- }
-
- if (atomic_read(&cx->tot_capturing) == 0) {
- clear_bit(CX18_F_I_EOS, &cx->i_flags);
- cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK);
- }
-
- cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
- (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
- (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);
-
- /* 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 */
- 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_CAPTURE_STOP, 1, s->handle);
- clear_bit(CX18_F_S_STREAMING, &s->s_flags);
- /* FIXME - CX18_F_S_STREAMOFF as well? */
- 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;
- 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);
- }
- return -EINVAL;
- }
-
- /* you're live! sit back and await interrupts :) */
- if (!ts)
- atomic_inc(&cx->ana_capturing);
- atomic_inc(&cx->tot_capturing);
- return 0;
-}
-
-void cx18_stop_all_captures(struct cx18 *cx)
-{
- int i;
-
- for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) {
- struct cx18_stream *s = &cx->streams[i];
-
- if (s->v4l2dev == NULL && s->dvb.enabled == 0)
- continue;
- if (test_bit(CX18_F_S_STREAMING, &s->s_flags))
- cx18_stop_v4l2_encode_stream(s, 0);
- }
-}
-
-int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end)
-{
- struct cx18 *cx = s->cx;
- unsigned long then;
-
- if (s->v4l2dev == NULL && s->dvb.enabled == 0)
- return -EINVAL;
-
- /* This function assumes that you are allowed to stop the capture
- and that we are actually capturing */
-
- CX18_DEBUG_INFO("Stop Capture\n");
-
- if (atomic_read(&cx->tot_capturing) == 0)
- return 0;
-
- 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_CPU_CAPTURE_STOP, 1, s->handle);
-
- then = jiffies;
-
- if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) {
- CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n");
- }
-
- if (s->type != CX18_ENC_STREAM_TYPE_TS)
- atomic_dec(&cx->ana_capturing);
- atomic_dec(&cx->tot_capturing);
-
- /* Clear capture and no-read bits */
- clear_bit(CX18_F_S_STREAMING, &s->s_flags);
-
- /* Tell the CX23418 it can't use our buffers anymore */
- 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;
-
- if (atomic_read(&cx->tot_capturing) > 0)
- return 0;
-
- cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
- wake_up(&s->waitq);
-
- return 0;
-}
-
-u32 cx18_find_handle(struct cx18 *cx)
-{
- int i;
-
- /* find first available handle to be used for global settings */
- for (i = 0; i < CX18_MAX_STREAMS; i++) {
- struct cx18_stream *s = &cx->streams[i];
-
- if (s->v4l2dev && (s->handle != CX18_INVALID_TASK_HANDLE))
- return s->handle;
- }
- return CX18_INVALID_TASK_HANDLE;
-}
-
-struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle)
-{
- int i;
- struct cx18_stream *s;
-
- if (handle == CX18_INVALID_TASK_HANDLE)
- return NULL;
-
- for (i = 0; i < CX18_MAX_STREAMS; i++) {
- s = &cx->streams[i];
- if (s->handle != handle)
- continue;
- if (s->v4l2dev || s->dvb.enabled)
- return s;
- }
- return NULL;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 06:49:12 +0000