1026 lines
30 KiB
C
1026 lines
30 KiB
C
|
/*
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init/start/stop/exit stream functions
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Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
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Copyright (C) 2004 Chris Kennedy <c@groovy.org>
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Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* License: GPL
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* Author: Kevin Thayer <nufan_wfk at yahoo dot com>
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*
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* This file will hold API related functions, both internal (firmware api)
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* and external (v4l2, etc)
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*
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* -----
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* MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com>
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* and Takeru KOMORIYA<komoriya@paken.org>
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*
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* AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
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* using information provided by Jiun-Kuei Jung @ AVerMedia.
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*/
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#include "ivtv-driver.h"
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#include "ivtv-fileops.h"
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#include "ivtv-queue.h"
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#include "ivtv-mailbox.h"
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#include "ivtv-ioctl.h"
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#include "ivtv-irq.h"
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#include "ivtv-yuv.h"
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#include "ivtv-cards.h"
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#include "ivtv-streams.h"
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#include "ivtv-firmware.h"
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#include <media/v4l2-event.h>
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static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
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.owner = THIS_MODULE,
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.read = ivtv_v4l2_read,
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.write = ivtv_v4l2_write,
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.open = ivtv_v4l2_open,
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.unlocked_ioctl = video_ioctl2,
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.release = ivtv_v4l2_close,
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.poll = ivtv_v4l2_enc_poll,
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};
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static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
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.owner = THIS_MODULE,
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.read = ivtv_v4l2_read,
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.write = ivtv_v4l2_write,
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.open = ivtv_v4l2_open,
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.unlocked_ioctl = video_ioctl2,
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.release = ivtv_v4l2_close,
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.poll = ivtv_v4l2_dec_poll,
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};
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static const struct v4l2_file_operations ivtv_v4l2_radio_fops = {
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.owner = THIS_MODULE,
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.open = ivtv_v4l2_open,
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.unlocked_ioctl = video_ioctl2,
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.release = ivtv_v4l2_close,
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.poll = ivtv_v4l2_enc_poll,
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};
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#define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */
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#define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */
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#define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */
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#define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */
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#define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */
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#define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */
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static struct {
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const char *name;
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int vfl_type;
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int num_offset;
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int dma, pio;
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u32 v4l2_caps;
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const struct v4l2_file_operations *fops;
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} ivtv_stream_info[] = {
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{ /* IVTV_ENC_STREAM_TYPE_MPG */
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"encoder MPG",
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VFL_TYPE_GRABBER, 0,
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PCI_DMA_FROMDEVICE, 0,
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V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
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V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
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&ivtv_v4l2_enc_fops
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},
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{ /* IVTV_ENC_STREAM_TYPE_YUV */
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"encoder YUV",
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VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET,
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PCI_DMA_FROMDEVICE, 0,
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V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
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V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
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&ivtv_v4l2_enc_fops
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},
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{ /* IVTV_ENC_STREAM_TYPE_VBI */
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"encoder VBI",
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VFL_TYPE_VBI, 0,
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PCI_DMA_FROMDEVICE, 0,
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V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER |
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V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
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&ivtv_v4l2_enc_fops
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},
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{ /* IVTV_ENC_STREAM_TYPE_PCM */
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"encoder PCM",
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VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET,
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PCI_DMA_FROMDEVICE, 0,
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V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
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&ivtv_v4l2_enc_fops
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},
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{ /* IVTV_ENC_STREAM_TYPE_RAD */
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"encoder radio",
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VFL_TYPE_RADIO, 0,
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PCI_DMA_NONE, 1,
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V4L2_CAP_RADIO | V4L2_CAP_TUNER,
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&ivtv_v4l2_radio_fops
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},
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{ /* IVTV_DEC_STREAM_TYPE_MPG */
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"decoder MPG",
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VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET,
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PCI_DMA_TODEVICE, 0,
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V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
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V4L2_CAP_VIDEO_OUTPUT_OVERLAY,
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&ivtv_v4l2_dec_fops
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},
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{ /* IVTV_DEC_STREAM_TYPE_VBI */
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"decoder VBI",
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VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET,
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PCI_DMA_NONE, 1,
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V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE,
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&ivtv_v4l2_enc_fops
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},
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{ /* IVTV_DEC_STREAM_TYPE_VOUT */
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"decoder VOUT",
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VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET,
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PCI_DMA_NONE, 1,
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V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE,
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&ivtv_v4l2_dec_fops
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},
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{ /* IVTV_DEC_STREAM_TYPE_YUV */
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"decoder YUV",
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VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET,
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PCI_DMA_TODEVICE, 0,
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V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
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V4L2_CAP_VIDEO_OUTPUT_OVERLAY,
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&ivtv_v4l2_dec_fops
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}
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};
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static void ivtv_stream_init(struct ivtv *itv, int type)
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{
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struct ivtv_stream *s = &itv->streams[type];
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/* we need to keep vdev, so restore it afterwards */
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memset(s, 0, sizeof(*s));
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/* initialize ivtv_stream fields */
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s->itv = itv;
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s->type = type;
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s->name = ivtv_stream_info[type].name;
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s->caps = ivtv_stream_info[type].v4l2_caps;
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if (ivtv_stream_info[type].pio)
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s->dma = PCI_DMA_NONE;
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else
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s->dma = ivtv_stream_info[type].dma;
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s->buf_size = itv->stream_buf_size[type];
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if (s->buf_size)
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s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size;
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spin_lock_init(&s->qlock);
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init_waitqueue_head(&s->waitq);
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s->sg_handle = IVTV_DMA_UNMAPPED;
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ivtv_queue_init(&s->q_free);
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ivtv_queue_init(&s->q_full);
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ivtv_queue_init(&s->q_dma);
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ivtv_queue_init(&s->q_predma);
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ivtv_queue_init(&s->q_io);
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}
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static int ivtv_prep_dev(struct ivtv *itv, int type)
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{
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struct ivtv_stream *s = &itv->streams[type];
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int num_offset = ivtv_stream_info[type].num_offset;
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int num = itv->instance + ivtv_first_minor + num_offset;
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/* These four fields are always initialized. If vdev.v4l2_dev == NULL, then
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this stream is not in use. In that case no other fields but these
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four can be used. */
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s->vdev.v4l2_dev = NULL;
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s->itv = itv;
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s->type = type;
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s->name = ivtv_stream_info[type].name;
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/* Check whether the radio is supported */
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if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO))
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return 0;
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if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
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return 0;
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/* User explicitly selected 0 buffers for these streams, so don't
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create them. */
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if (ivtv_stream_info[type].dma != PCI_DMA_NONE &&
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itv->options.kilobytes[type] == 0) {
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IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name);
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return 0;
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}
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ivtv_stream_init(itv, type);
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snprintf(s->vdev.name, sizeof(s->vdev.name), "%s %s",
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itv->v4l2_dev.name, s->name);
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s->vdev.num = num;
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s->vdev.v4l2_dev = &itv->v4l2_dev;
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if (ivtv_stream_info[type].v4l2_caps &
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(V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_SLICED_VBI_OUTPUT))
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s->vdev.vfl_dir = VFL_DIR_TX;
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s->vdev.fops = ivtv_stream_info[type].fops;
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s->vdev.ctrl_handler = itv->v4l2_dev.ctrl_handler;
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s->vdev.release = video_device_release_empty;
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s->vdev.tvnorms = V4L2_STD_ALL;
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s->vdev.lock = &itv->serialize_lock;
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if (s->type == IVTV_DEC_STREAM_TYPE_VBI) {
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v4l2_disable_ioctl(&s->vdev, VIDIOC_S_AUDIO);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_G_AUDIO);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_ENUMAUDIO);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_ENUMINPUT);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_S_INPUT);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_G_INPUT);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_S_FREQUENCY);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_G_FREQUENCY);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_S_TUNER);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_G_TUNER);
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v4l2_disable_ioctl(&s->vdev, VIDIOC_S_STD);
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||
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}
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ivtv_set_funcs(&s->vdev);
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return 0;
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}
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||
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|
||
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/* Initialize v4l2 variables and prepare v4l2 devices */
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int ivtv_streams_setup(struct ivtv *itv)
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{
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int type;
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|
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/* Setup V4L2 Devices */
|
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for (type = 0; type < IVTV_MAX_STREAMS; type++) {
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||
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/* Prepare device */
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||
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if (ivtv_prep_dev(itv, type))
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break;
|
||
|
|
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if (itv->streams[type].vdev.v4l2_dev == NULL)
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continue;
|
||
|
|
||
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/* Allocate Stream */
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||
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if (ivtv_stream_alloc(&itv->streams[type]))
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||
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break;
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||
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}
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||
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if (type == IVTV_MAX_STREAMS)
|
||
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return 0;
|
||
|
|
||
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/* One or more streams could not be initialized. Clean 'em all up. */
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||
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ivtv_streams_cleanup(itv);
|
||
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return -ENOMEM;
|
||
|
}
|
||
|
|
||
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static int ivtv_reg_dev(struct ivtv *itv, int type)
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||
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{
|
||
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struct ivtv_stream *s = &itv->streams[type];
|
||
|
int vfl_type = ivtv_stream_info[type].vfl_type;
|
||
|
const char *name;
|
||
|
int num;
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
return 0;
|
||
|
|
||
|
num = s->vdev.num;
|
||
|
/* card number + user defined offset + device offset */
|
||
|
if (type != IVTV_ENC_STREAM_TYPE_MPG) {
|
||
|
struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG];
|
||
|
|
||
|
if (s_mpg->vdev.v4l2_dev)
|
||
|
num = s_mpg->vdev.num + ivtv_stream_info[type].num_offset;
|
||
|
}
|
||
|
video_set_drvdata(&s->vdev, s);
|
||
|
|
||
|
/* Register device. First try the desired minor, then any free one. */
|
||
|
if (video_register_device_no_warn(&s->vdev, vfl_type, num)) {
|
||
|
IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n",
|
||
|
s->name, num);
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
name = video_device_node_name(&s->vdev);
|
||
|
|
||
|
switch (vfl_type) {
|
||
|
case VFL_TYPE_GRABBER:
|
||
|
IVTV_INFO("Registered device %s for %s (%d kB)\n",
|
||
|
name, s->name, itv->options.kilobytes[type]);
|
||
|
break;
|
||
|
case VFL_TYPE_RADIO:
|
||
|
IVTV_INFO("Registered device %s for %s\n",
|
||
|
name, s->name);
|
||
|
break;
|
||
|
case VFL_TYPE_VBI:
|
||
|
if (itv->options.kilobytes[type])
|
||
|
IVTV_INFO("Registered device %s for %s (%d kB)\n",
|
||
|
name, s->name, itv->options.kilobytes[type]);
|
||
|
else
|
||
|
IVTV_INFO("Registered device %s for %s\n",
|
||
|
name, s->name);
|
||
|
break;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/* Register v4l2 devices */
|
||
|
int ivtv_streams_register(struct ivtv *itv)
|
||
|
{
|
||
|
int type;
|
||
|
int err = 0;
|
||
|
|
||
|
/* Register V4L2 devices */
|
||
|
for (type = 0; type < IVTV_MAX_STREAMS; type++)
|
||
|
err |= ivtv_reg_dev(itv, type);
|
||
|
|
||
|
if (err == 0)
|
||
|
return 0;
|
||
|
|
||
|
/* One or more streams could not be initialized. Clean 'em all up. */
|
||
|
ivtv_streams_cleanup(itv);
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
|
||
|
/* Unregister v4l2 devices */
|
||
|
void ivtv_streams_cleanup(struct ivtv *itv)
|
||
|
{
|
||
|
int type;
|
||
|
|
||
|
/* Teardown all streams */
|
||
|
for (type = 0; type < IVTV_MAX_STREAMS; type++) {
|
||
|
struct video_device *vdev = &itv->streams[type].vdev;
|
||
|
|
||
|
if (vdev->v4l2_dev == NULL)
|
||
|
continue;
|
||
|
|
||
|
video_unregister_device(vdev);
|
||
|
ivtv_stream_free(&itv->streams[type]);
|
||
|
itv->streams[type].vdev.v4l2_dev = NULL;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void ivtv_vbi_setup(struct ivtv *itv)
|
||
|
{
|
||
|
int raw = ivtv_raw_vbi(itv);
|
||
|
u32 data[CX2341X_MBOX_MAX_DATA];
|
||
|
int lines;
|
||
|
int i;
|
||
|
|
||
|
/* Reset VBI */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0);
|
||
|
|
||
|
/* setup VBI registers */
|
||
|
if (raw)
|
||
|
v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi);
|
||
|
else
|
||
|
v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced);
|
||
|
|
||
|
/* determine number of lines and total number of VBI bytes.
|
||
|
A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1
|
||
|
The '- 1' byte is probably an unused U or V byte. Or something...
|
||
|
A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal
|
||
|
header, 42 data bytes + checksum (to be confirmed) */
|
||
|
if (raw) {
|
||
|
lines = itv->vbi.count * 2;
|
||
|
} else {
|
||
|
lines = itv->is_60hz ? 24 : 38;
|
||
|
if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840))
|
||
|
lines += 2;
|
||
|
}
|
||
|
|
||
|
itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
|
||
|
|
||
|
/* Note: sliced vs raw flag doesn't seem to have any effect
|
||
|
TODO: check mode (0x02) value with older ivtv versions. */
|
||
|
data[0] = raw | 0x02 | (0xbd << 8);
|
||
|
|
||
|
/* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */
|
||
|
data[1] = 1;
|
||
|
/* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */
|
||
|
data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size);
|
||
|
/* The start/stop codes determine which VBI lines end up in the raw VBI data area.
|
||
|
The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line
|
||
|
is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video)
|
||
|
code. These values for raw VBI are obtained from a driver disassembly. The sliced
|
||
|
start/stop codes was deduced from this, but they do not appear in the driver.
|
||
|
Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54.
|
||
|
However, I have no idea what these values are for. */
|
||
|
if (itv->hw_flags & IVTV_HW_CX25840) {
|
||
|
/* Setup VBI for the cx25840 digitizer */
|
||
|
if (raw) {
|
||
|
data[3] = 0x20602060;
|
||
|
data[4] = 0x30703070;
|
||
|
} else {
|
||
|
data[3] = 0xB0F0B0F0;
|
||
|
data[4] = 0xA0E0A0E0;
|
||
|
}
|
||
|
/* Lines per frame */
|
||
|
data[5] = lines;
|
||
|
/* bytes per line */
|
||
|
data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size);
|
||
|
} else {
|
||
|
/* Setup VBI for the saa7115 digitizer */
|
||
|
if (raw) {
|
||
|
data[3] = 0x25256262;
|
||
|
data[4] = 0x387F7F7F;
|
||
|
} else {
|
||
|
data[3] = 0xABABECEC;
|
||
|
data[4] = 0xB6F1F1F1;
|
||
|
}
|
||
|
/* Lines per frame */
|
||
|
data[5] = lines;
|
||
|
/* bytes per line */
|
||
|
data[6] = itv->vbi.enc_size / lines;
|
||
|
}
|
||
|
|
||
|
IVTV_DEBUG_INFO(
|
||
|
"Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n",
|
||
|
data[0], data[1], data[2], data[5], data[6]);
|
||
|
|
||
|
ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data);
|
||
|
|
||
|
/* returns the VBI encoder memory area. */
|
||
|
itv->vbi.enc_start = data[2];
|
||
|
itv->vbi.fpi = data[0];
|
||
|
if (!itv->vbi.fpi)
|
||
|
itv->vbi.fpi = 1;
|
||
|
|
||
|
IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n",
|
||
|
itv->vbi.enc_start, data[1], itv->vbi.fpi);
|
||
|
|
||
|
/* select VBI lines.
|
||
|
Note that the sliced argument seems to have no effect. */
|
||
|
for (i = 2; i <= 24; i++) {
|
||
|
int valid;
|
||
|
|
||
|
if (itv->is_60hz) {
|
||
|
valid = i >= 10 && i < 22;
|
||
|
} else {
|
||
|
valid = i >= 6 && i < 24;
|
||
|
}
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1,
|
||
|
valid, 0 , 0, 0);
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000,
|
||
|
valid, 0, 0, 0);
|
||
|
}
|
||
|
|
||
|
/* Remaining VBI questions:
|
||
|
- Is it possible to select particular VBI lines only for inclusion in the MPEG
|
||
|
stream? Currently you can only get the first X lines.
|
||
|
- Is mixed raw and sliced VBI possible?
|
||
|
- What's the meaning of the raw/sliced flag?
|
||
|
- What's the meaning of params 2, 3 & 4 of the Select VBI command? */
|
||
|
}
|
||
|
|
||
|
int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s)
|
||
|
{
|
||
|
u32 data[CX2341X_MBOX_MAX_DATA];
|
||
|
struct ivtv *itv = s->itv;
|
||
|
int captype = 0, subtype = 0;
|
||
|
int enable_passthrough = 0;
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
return -EINVAL;
|
||
|
|
||
|
IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name);
|
||
|
|
||
|
switch (s->type) {
|
||
|
case IVTV_ENC_STREAM_TYPE_MPG:
|
||
|
captype = 0;
|
||
|
subtype = 3;
|
||
|
|
||
|
/* Stop Passthrough */
|
||
|
if (itv->output_mode == OUT_PASSTHROUGH) {
|
||
|
ivtv_passthrough_mode(itv, 0);
|
||
|
enable_passthrough = 1;
|
||
|
}
|
||
|
itv->mpg_data_received = itv->vbi_data_inserted = 0;
|
||
|
itv->dualwatch_jiffies = jiffies;
|
||
|
itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode);
|
||
|
itv->search_pack_header = 0;
|
||
|
break;
|
||
|
|
||
|
case IVTV_ENC_STREAM_TYPE_YUV:
|
||
|
if (itv->output_mode == OUT_PASSTHROUGH) {
|
||
|
captype = 2;
|
||
|
subtype = 11; /* video+audio+decoder */
|
||
|
break;
|
||
|
}
|
||
|
captype = 1;
|
||
|
subtype = 1;
|
||
|
break;
|
||
|
case IVTV_ENC_STREAM_TYPE_PCM:
|
||
|
captype = 1;
|
||
|
subtype = 2;
|
||
|
break;
|
||
|
case IVTV_ENC_STREAM_TYPE_VBI:
|
||
|
captype = 1;
|
||
|
subtype = 4;
|
||
|
|
||
|
itv->vbi.frame = 0;
|
||
|
itv->vbi.inserted_frame = 0;
|
||
|
memset(itv->vbi.sliced_mpeg_size,
|
||
|
0, sizeof(itv->vbi.sliced_mpeg_size));
|
||
|
break;
|
||
|
default:
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
s->subtype = subtype;
|
||
|
s->buffers_stolen = 0;
|
||
|
|
||
|
/* Clear Streamoff flags in case left from last capture */
|
||
|
clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
|
||
|
|
||
|
if (atomic_read(&itv->capturing) == 0) {
|
||
|
int digitizer;
|
||
|
|
||
|
/* Always use frame based mode. Experiments have demonstrated that byte
|
||
|
stream based mode results in dropped frames and corruption. Not often,
|
||
|
but occasionally. Many thanks go to Leonard Orb who spent a lot of
|
||
|
effort and time trying to trace the cause of the drop outs. */
|
||
|
/* 1 frame per DMA */
|
||
|
/*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1);
|
||
|
|
||
|
/* Stuff from Windows, we don't know what it is */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0);
|
||
|
/* According to the docs, this should be correct. However, this is
|
||
|
untested. I don't dare enable this without having tested it.
|
||
|
Only very few old cards actually have this hardware combination.
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1,
|
||
|
((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0);
|
||
|
*/
|
||
|
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415);
|
||
|
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0);
|
||
|
ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1);
|
||
|
ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12);
|
||
|
|
||
|
/* assign placeholder */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12,
|
||
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
|
||
|
|
||
|
if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
|
||
|
digitizer = 0xF1;
|
||
|
else if (itv->card->hw_all & IVTV_HW_SAA7114)
|
||
|
digitizer = 0xEF;
|
||
|
else /* cx25840 */
|
||
|
digitizer = 0x140;
|
||
|
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer);
|
||
|
|
||
|
/* Setup VBI */
|
||
|
if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) {
|
||
|
ivtv_vbi_setup(itv);
|
||
|
}
|
||
|
|
||
|
/* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */
|
||
|
ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400);
|
||
|
itv->pgm_info_offset = data[0];
|
||
|
itv->pgm_info_num = data[1];
|
||
|
itv->pgm_info_write_idx = 0;
|
||
|
itv->pgm_info_read_idx = 0;
|
||
|
|
||
|
IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n",
|
||
|
itv->pgm_info_offset, itv->pgm_info_num);
|
||
|
|
||
|
/* Setup API for Stream */
|
||
|
cx2341x_handler_setup(&itv->cxhdl);
|
||
|
|
||
|
/* mute if capturing radio */
|
||
|
if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
|
||
|
ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1,
|
||
|
1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8));
|
||
|
}
|
||
|
|
||
|
/* Vsync Setup */
|
||
|
if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
|
||
|
/* event notification (on) */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1);
|
||
|
ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
|
||
|
}
|
||
|
|
||
|
if (atomic_read(&itv->capturing) == 0) {
|
||
|
/* Clear all Pending Interrupts */
|
||
|
ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
|
||
|
|
||
|
clear_bit(IVTV_F_I_EOS, &itv->i_flags);
|
||
|
|
||
|
cx2341x_handler_set_busy(&itv->cxhdl, 1);
|
||
|
|
||
|
/* Initialize Digitizer for Capture */
|
||
|
/* Avoid tinny audio problem - ensure audio clocks are going */
|
||
|
v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1);
|
||
|
/* Avoid unpredictable PCI bus hang - disable video clocks */
|
||
|
v4l2_subdev_call(itv->sd_video, video, s_stream, 0);
|
||
|
ivtv_msleep_timeout(300, 0);
|
||
|
ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0);
|
||
|
v4l2_subdev_call(itv->sd_video, video, s_stream, 1);
|
||
|
}
|
||
|
|
||
|
/* begin_capture */
|
||
|
if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype))
|
||
|
{
|
||
|
IVTV_DEBUG_WARN( "Error starting capture!\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
/* Start Passthrough */
|
||
|
if (enable_passthrough) {
|
||
|
ivtv_passthrough_mode(itv, 1);
|
||
|
}
|
||
|
|
||
|
if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
|
||
|
ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
|
||
|
else
|
||
|
ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
|
||
|
|
||
|
/* you're live! sit back and await interrupts :) */
|
||
|
atomic_inc(&itv->capturing);
|
||
|
return 0;
|
||
|
}
|
||
|
EXPORT_SYMBOL(ivtv_start_v4l2_encode_stream);
|
||
|
|
||
|
static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
|
||
|
{
|
||
|
u32 data[CX2341X_MBOX_MAX_DATA];
|
||
|
struct ivtv *itv = s->itv;
|
||
|
int datatype;
|
||
|
u16 width;
|
||
|
u16 height;
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
return -EINVAL;
|
||
|
|
||
|
IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
|
||
|
|
||
|
width = itv->cxhdl.width;
|
||
|
height = itv->cxhdl.height;
|
||
|
|
||
|
/* set audio mode to left/stereo for dual/stereo mode. */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
|
||
|
|
||
|
/* set number of internal decoder buffers */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0);
|
||
|
|
||
|
/* prebuffering */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1);
|
||
|
|
||
|
/* extract from user packets */
|
||
|
ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1);
|
||
|
itv->vbi.dec_start = data[0];
|
||
|
|
||
|
IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n",
|
||
|
itv->vbi.dec_start, data[1]);
|
||
|
|
||
|
/* set decoder source settings */
|
||
|
/* Data type: 0 = mpeg from host,
|
||
|
1 = yuv from encoder,
|
||
|
2 = yuv_from_host */
|
||
|
switch (s->type) {
|
||
|
case IVTV_DEC_STREAM_TYPE_YUV:
|
||
|
if (itv->output_mode == OUT_PASSTHROUGH) {
|
||
|
datatype = 1;
|
||
|
} else {
|
||
|
/* Fake size to avoid switching video standard */
|
||
|
datatype = 2;
|
||
|
width = 720;
|
||
|
height = itv->is_out_50hz ? 576 : 480;
|
||
|
}
|
||
|
IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
|
||
|
break;
|
||
|
case IVTV_DEC_STREAM_TYPE_MPG:
|
||
|
default:
|
||
|
datatype = 0;
|
||
|
break;
|
||
|
}
|
||
|
if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
|
||
|
width, height, itv->cxhdl.audio_properties)) {
|
||
|
IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
|
||
|
}
|
||
|
|
||
|
/* Decoder sometimes dies here, so wait a moment */
|
||
|
ivtv_msleep_timeout(10, 0);
|
||
|
|
||
|
/* Known failure point for firmware, so check */
|
||
|
return ivtv_firmware_check(itv, "ivtv_setup_v4l2_decode_stream");
|
||
|
}
|
||
|
|
||
|
int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset)
|
||
|
{
|
||
|
struct ivtv *itv = s->itv;
|
||
|
int rc;
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags))
|
||
|
return 0; /* already started */
|
||
|
|
||
|
IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset);
|
||
|
|
||
|
rc = ivtv_setup_v4l2_decode_stream(s);
|
||
|
if (rc < 0) {
|
||
|
clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
|
||
|
return rc;
|
||
|
}
|
||
|
|
||
|
/* set dma size to 65536 bytes */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536);
|
||
|
|
||
|
/* Clear Streamoff */
|
||
|
clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
|
||
|
|
||
|
/* Zero out decoder counters */
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]);
|
||
|
writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]);
|
||
|
|
||
|
/* turn on notification of dual/stereo mode change */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
|
||
|
|
||
|
/* start playback */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0);
|
||
|
|
||
|
/* Let things settle before we actually start */
|
||
|
ivtv_msleep_timeout(10, 0);
|
||
|
|
||
|
/* Clear the following Interrupt mask bits for decoding */
|
||
|
ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
|
||
|
IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask);
|
||
|
|
||
|
/* you're live! sit back and await interrupts :) */
|
||
|
atomic_inc(&itv->decoding);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
void ivtv_stop_all_captures(struct ivtv *itv)
|
||
|
{
|
||
|
int i;
|
||
|
|
||
|
for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) {
|
||
|
struct ivtv_stream *s = &itv->streams[i];
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
continue;
|
||
|
if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
|
||
|
ivtv_stop_v4l2_encode_stream(s, 0);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end)
|
||
|
{
|
||
|
struct ivtv *itv = s->itv;
|
||
|
DECLARE_WAITQUEUE(wait, current);
|
||
|
int cap_type;
|
||
|
int stopmode;
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
return -EINVAL;
|
||
|
|
||
|
/* This function assumes that you are allowed to stop the capture
|
||
|
and that we are actually capturing */
|
||
|
|
||
|
IVTV_DEBUG_INFO("Stop Capture\n");
|
||
|
|
||
|
if (s->type == IVTV_DEC_STREAM_TYPE_VOUT)
|
||
|
return 0;
|
||
|
if (atomic_read(&itv->capturing) == 0)
|
||
|
return 0;
|
||
|
|
||
|
switch (s->type) {
|
||
|
case IVTV_ENC_STREAM_TYPE_YUV:
|
||
|
cap_type = 1;
|
||
|
break;
|
||
|
case IVTV_ENC_STREAM_TYPE_PCM:
|
||
|
cap_type = 1;
|
||
|
break;
|
||
|
case IVTV_ENC_STREAM_TYPE_VBI:
|
||
|
cap_type = 1;
|
||
|
break;
|
||
|
case IVTV_ENC_STREAM_TYPE_MPG:
|
||
|
default:
|
||
|
cap_type = 0;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Stop Capture Mode */
|
||
|
if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
|
||
|
stopmode = 0;
|
||
|
} else {
|
||
|
stopmode = 1;
|
||
|
}
|
||
|
|
||
|
/* end_capture */
|
||
|
/* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype);
|
||
|
|
||
|
if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) {
|
||
|
if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) {
|
||
|
/* only run these if we're shutting down the last cap */
|
||
|
unsigned long duration;
|
||
|
unsigned long then = jiffies;
|
||
|
|
||
|
add_wait_queue(&itv->eos_waitq, &wait);
|
||
|
|
||
|
set_current_state(TASK_INTERRUPTIBLE);
|
||
|
|
||
|
/* wait 2s for EOS interrupt */
|
||
|
while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) &&
|
||
|
time_before(jiffies,
|
||
|
then + msecs_to_jiffies(2000))) {
|
||
|
schedule_timeout(msecs_to_jiffies(10));
|
||
|
}
|
||
|
|
||
|
/* To convert jiffies to ms, we must multiply by 1000
|
||
|
* and divide by HZ. To avoid runtime division, we
|
||
|
* convert this to multiplication by 1000/HZ.
|
||
|
* Since integer division truncates, we get the best
|
||
|
* accuracy if we do a rounding calculation of the constant.
|
||
|
* Think of the case where HZ is 1024.
|
||
|
*/
|
||
|
duration = ((1000 + HZ / 2) / HZ) * (jiffies - then);
|
||
|
|
||
|
if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) {
|
||
|
IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name);
|
||
|
IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration);
|
||
|
} else {
|
||
|
IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration);
|
||
|
}
|
||
|
set_current_state(TASK_RUNNING);
|
||
|
remove_wait_queue(&itv->eos_waitq, &wait);
|
||
|
set_bit(IVTV_F_S_STREAMOFF, &s->s_flags);
|
||
|
}
|
||
|
|
||
|
/* Handle any pending interrupts */
|
||
|
ivtv_msleep_timeout(100, 0);
|
||
|
}
|
||
|
|
||
|
atomic_dec(&itv->capturing);
|
||
|
|
||
|
/* Clear capture and no-read bits */
|
||
|
clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
|
||
|
|
||
|
if (s->type == IVTV_ENC_STREAM_TYPE_VBI)
|
||
|
ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP);
|
||
|
|
||
|
if (atomic_read(&itv->capturing) > 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
cx2341x_handler_set_busy(&itv->cxhdl, 0);
|
||
|
|
||
|
/* Set the following Interrupt mask bits for capture */
|
||
|
ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE);
|
||
|
del_timer(&itv->dma_timer);
|
||
|
|
||
|
/* event notification (off) */
|
||
|
if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) {
|
||
|
/* type: 0 = refresh */
|
||
|
/* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1);
|
||
|
ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST);
|
||
|
}
|
||
|
|
||
|
/* Raw-passthrough is implied on start. Make sure it's stopped so
|
||
|
the encoder will re-initialize when next started */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7);
|
||
|
|
||
|
wake_up(&s->waitq);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
EXPORT_SYMBOL(ivtv_stop_v4l2_encode_stream);
|
||
|
|
||
|
int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts)
|
||
|
{
|
||
|
static const struct v4l2_event ev = {
|
||
|
.type = V4L2_EVENT_EOS,
|
||
|
};
|
||
|
struct ivtv *itv = s->itv;
|
||
|
|
||
|
if (s->vdev.v4l2_dev == NULL)
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG)
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags))
|
||
|
return 0;
|
||
|
|
||
|
IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags);
|
||
|
|
||
|
/* Stop Decoder */
|
||
|
if (!(flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) || pts) {
|
||
|
u32 tmp = 0;
|
||
|
|
||
|
/* Wait until the decoder is no longer running */
|
||
|
if (pts) {
|
||
|
ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3,
|
||
|
0, (u32)(pts & 0xffffffff), (u32)(pts >> 32));
|
||
|
}
|
||
|
while (1) {
|
||
|
u32 data[CX2341X_MBOX_MAX_DATA];
|
||
|
ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0);
|
||
|
if (s->q_full.buffers + s->q_dma.buffers == 0) {
|
||
|
if (tmp == data[3])
|
||
|
break;
|
||
|
tmp = data[3];
|
||
|
}
|
||
|
if (ivtv_msleep_timeout(100, 1))
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & V4L2_DEC_CMD_STOP_TO_BLACK, 0, 0);
|
||
|
|
||
|
/* turn off notification of dual/stereo mode change */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1);
|
||
|
|
||
|
ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE);
|
||
|
del_timer(&itv->dma_timer);
|
||
|
|
||
|
clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags);
|
||
|
clear_bit(IVTV_F_S_STREAMING, &s->s_flags);
|
||
|
ivtv_flush_queues(s);
|
||
|
|
||
|
/* decoder needs time to settle */
|
||
|
ivtv_msleep_timeout(40, 0);
|
||
|
|
||
|
/* decrement decoding */
|
||
|
atomic_dec(&itv->decoding);
|
||
|
|
||
|
set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags);
|
||
|
wake_up(&itv->event_waitq);
|
||
|
v4l2_event_queue(&s->vdev, &ev);
|
||
|
|
||
|
/* wake up wait queues */
|
||
|
wake_up(&s->waitq);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int ivtv_passthrough_mode(struct ivtv *itv, int enable)
|
||
|
{
|
||
|
struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV];
|
||
|
struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
|
||
|
|
||
|
if (yuv_stream->vdev.v4l2_dev == NULL || dec_stream->vdev.v4l2_dev == NULL)
|
||
|
return -EINVAL;
|
||
|
|
||
|
IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n");
|
||
|
|
||
|
/* Prevent others from starting/stopping streams while we
|
||
|
initiate/terminate passthrough mode */
|
||
|
if (enable) {
|
||
|
if (itv->output_mode == OUT_PASSTHROUGH) {
|
||
|
return 0;
|
||
|
}
|
||
|
if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH)
|
||
|
return -EBUSY;
|
||
|
|
||
|
/* Fully initialize stream, and then unflag init */
|
||
|
set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
|
||
|
set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
|
||
|
|
||
|
/* Setup YUV Decoder */
|
||
|
ivtv_setup_v4l2_decode_stream(dec_stream);
|
||
|
|
||
|
/* Start Decoder */
|
||
|
ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1);
|
||
|
atomic_inc(&itv->decoding);
|
||
|
|
||
|
/* Setup capture if not already done */
|
||
|
if (atomic_read(&itv->capturing) == 0) {
|
||
|
cx2341x_handler_setup(&itv->cxhdl);
|
||
|
cx2341x_handler_set_busy(&itv->cxhdl, 1);
|
||
|
}
|
||
|
|
||
|
/* Start Passthrough Mode */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11);
|
||
|
atomic_inc(&itv->capturing);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (itv->output_mode != OUT_PASSTHROUGH)
|
||
|
return 0;
|
||
|
|
||
|
/* Stop Passthrough Mode */
|
||
|
ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11);
|
||
|
ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0);
|
||
|
|
||
|
atomic_dec(&itv->capturing);
|
||
|
atomic_dec(&itv->decoding);
|
||
|
clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags);
|
||
|
clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags);
|
||
|
itv->output_mode = OUT_NONE;
|
||
|
if (atomic_read(&itv->capturing) == 0)
|
||
|
cx2341x_handler_set_busy(&itv->cxhdl, 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|