49a53750b2
The cx18 private packet insertion code only expects to operate on an MPEG PS when inserting private packets of sliced VBI data. This patch keeps the cx18 driver from corrupting the MPEG TS or other non-PS stream types, in case the user enables sliced VBI insertion for these MPEG stream types. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
346 lines
9 KiB
C
346 lines
9 KiB
C
/*
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* cx18 ioctl control functions
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*
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* Derived from ivtv-controls.c
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*
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* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
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*
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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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*
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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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*
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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
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* 02111-1307 USA
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*/
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#include "cx18-driver.h"
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#include "cx18-cards.h"
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#include "cx18-ioctl.h"
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#include "cx18-audio.h"
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#include "cx18-mailbox.h"
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#include "cx18-controls.h"
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/* Must be sorted from low to high control ID! */
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static const u32 user_ctrls[] = {
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V4L2_CID_USER_CLASS,
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V4L2_CID_BRIGHTNESS,
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V4L2_CID_CONTRAST,
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V4L2_CID_SATURATION,
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V4L2_CID_HUE,
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V4L2_CID_AUDIO_VOLUME,
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V4L2_CID_AUDIO_BALANCE,
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V4L2_CID_AUDIO_BASS,
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V4L2_CID_AUDIO_TREBLE,
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V4L2_CID_AUDIO_MUTE,
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V4L2_CID_AUDIO_LOUDNESS,
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0
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};
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static const u32 *ctrl_classes[] = {
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user_ctrls,
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cx2341x_mpeg_ctrls,
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NULL
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};
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int cx18_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
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{
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struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
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const char *name;
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qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
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if (qctrl->id == 0)
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return -EINVAL;
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switch (qctrl->id) {
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/* Standard V4L2 controls */
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case V4L2_CID_BRIGHTNESS:
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case V4L2_CID_HUE:
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case V4L2_CID_SATURATION:
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case V4L2_CID_CONTRAST:
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if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
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qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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case V4L2_CID_AUDIO_MUTE:
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case V4L2_CID_AUDIO_BALANCE:
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case V4L2_CID_AUDIO_BASS:
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case V4L2_CID_AUDIO_TREBLE:
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case V4L2_CID_AUDIO_LOUDNESS:
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if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
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qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
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return 0;
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default:
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if (cx2341x_ctrl_query(&cx->params, qctrl))
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qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
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return 0;
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}
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strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
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qctrl->name[sizeof(qctrl->name) - 1] = 0;
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return 0;
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}
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int cx18_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
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{
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struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
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struct v4l2_queryctrl qctrl;
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qctrl.id = qmenu->id;
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cx18_queryctrl(file, fh, &qctrl);
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return v4l2_ctrl_query_menu(qmenu, &qctrl,
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cx2341x_ctrl_get_menu(&cx->params, qmenu->id));
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}
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static int cx18_try_ctrl(struct file *file, void *fh,
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struct v4l2_ext_control *vctrl)
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{
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struct v4l2_queryctrl qctrl;
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const char **menu_items = NULL;
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int err;
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qctrl.id = vctrl->id;
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err = cx18_queryctrl(file, fh, &qctrl);
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if (err)
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return err;
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if (qctrl.type == V4L2_CTRL_TYPE_MENU)
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menu_items = v4l2_ctrl_get_menu(qctrl.id);
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return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
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}
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static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
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{
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switch (vctrl->id) {
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/* Standard V4L2 controls */
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case V4L2_CID_BRIGHTNESS:
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case V4L2_CID_HUE:
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case V4L2_CID_SATURATION:
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case V4L2_CID_CONTRAST:
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return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
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case V4L2_CID_AUDIO_VOLUME:
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case V4L2_CID_AUDIO_MUTE:
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case V4L2_CID_AUDIO_BALANCE:
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case V4L2_CID_AUDIO_BASS:
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case V4L2_CID_AUDIO_TREBLE:
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case V4L2_CID_AUDIO_LOUDNESS:
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return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
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default:
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CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
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return -EINVAL;
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}
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return 0;
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}
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static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
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{
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switch (vctrl->id) {
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/* Standard V4L2 controls */
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case V4L2_CID_BRIGHTNESS:
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case V4L2_CID_HUE:
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case V4L2_CID_SATURATION:
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case V4L2_CID_CONTRAST:
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return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
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case V4L2_CID_AUDIO_VOLUME:
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case V4L2_CID_AUDIO_MUTE:
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case V4L2_CID_AUDIO_BALANCE:
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case V4L2_CID_AUDIO_BASS:
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case V4L2_CID_AUDIO_TREBLE:
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case V4L2_CID_AUDIO_LOUDNESS:
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return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
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default:
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CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
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return -EINVAL;
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}
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return 0;
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}
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static int cx18_setup_vbi_fmt(struct cx18 *cx,
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enum v4l2_mpeg_stream_vbi_fmt fmt,
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enum v4l2_mpeg_stream_type type)
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{
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if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
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return -EINVAL;
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if (atomic_read(&cx->ana_capturing) > 0)
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return -EBUSY;
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if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
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type != V4L2_MPEG_STREAM_TYPE_MPEG2_PS) {
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/* We don't do VBI insertion aside from IVTV format in a PS */
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cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
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CX18_DEBUG_INFO("disabled insertion of sliced VBI data into "
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"the MPEG stream\n");
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return 0;
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}
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/* Allocate sliced VBI buffers if needed. */
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if (cx->vbi.sliced_mpeg_data[0] == NULL) {
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int i;
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for (i = 0; i < CX18_VBI_FRAMES; i++) {
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cx->vbi.sliced_mpeg_data[i] =
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kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
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if (cx->vbi.sliced_mpeg_data[i] == NULL) {
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while (--i >= 0) {
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kfree(cx->vbi.sliced_mpeg_data[i]);
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cx->vbi.sliced_mpeg_data[i] = NULL;
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}
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cx->vbi.insert_mpeg =
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V4L2_MPEG_STREAM_VBI_FMT_NONE;
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CX18_WARN("Unable to allocate buffers for "
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"sliced VBI data insertion\n");
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return -ENOMEM;
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}
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}
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}
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cx->vbi.insert_mpeg = fmt;
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CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,"
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"when sliced VBI is enabled\n");
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/*
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* If our current settings have no lines set for capture, store a valid,
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* default set of service lines to capture, in our current settings.
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*/
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if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
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if (cx->is_60hz)
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cx->vbi.sliced_in->service_set =
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V4L2_SLICED_CAPTION_525;
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else
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cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
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cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
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}
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return 0;
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}
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int cx18_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
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{
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struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
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struct v4l2_control ctrl;
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if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
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int i;
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int err = 0;
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for (i = 0; i < c->count; i++) {
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ctrl.id = c->controls[i].id;
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ctrl.value = c->controls[i].value;
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err = cx18_g_ctrl(cx, &ctrl);
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c->controls[i].value = ctrl.value;
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if (err) {
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c->error_idx = i;
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break;
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}
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}
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return err;
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}
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if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
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return cx2341x_ext_ctrls(&cx->params, 0, c, VIDIOC_G_EXT_CTRLS);
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return -EINVAL;
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}
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int cx18_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
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{
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struct cx18_open_id *id = fh;
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struct cx18 *cx = id->cx;
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int ret;
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struct v4l2_control ctrl;
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ret = v4l2_prio_check(&cx->prio, &id->prio);
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if (ret)
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return ret;
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if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
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int i;
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int err = 0;
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for (i = 0; i < c->count; i++) {
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ctrl.id = c->controls[i].id;
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ctrl.value = c->controls[i].value;
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err = cx18_s_ctrl(cx, &ctrl);
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c->controls[i].value = ctrl.value;
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if (err) {
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c->error_idx = i;
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break;
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}
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}
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return err;
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}
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if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
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static u32 freqs[3] = { 44100, 48000, 32000 };
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struct cx18_api_func_private priv;
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struct cx2341x_mpeg_params p = cx->params;
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int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing),
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c, VIDIOC_S_EXT_CTRLS);
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unsigned int idx;
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if (err)
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return err;
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if (p.video_encoding != cx->params.video_encoding) {
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int is_mpeg1 = p.video_encoding ==
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V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
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struct v4l2_format fmt;
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/* fix videodecoder resolution */
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fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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fmt.fmt.pix.width = cx->params.width
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/ (is_mpeg1 ? 2 : 1);
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fmt.fmt.pix.height = cx->params.height;
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v4l2_subdev_call(cx->sd_av, video, s_fmt, &fmt);
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}
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priv.cx = cx;
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priv.s = &cx->streams[id->type];
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err = cx2341x_update(&priv, cx18_api_func, &cx->params, &p);
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if (!err &&
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(cx->params.stream_vbi_fmt != p.stream_vbi_fmt ||
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cx->params.stream_type != p.stream_type))
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err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt,
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p.stream_type);
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cx->params = p;
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cx->dualwatch_stereo_mode = p.audio_properties & 0x0300;
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idx = p.audio_properties & 0x03;
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/* The audio clock of the digitizer must match the codec sample
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rate otherwise you get some very strange effects. */
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if (idx < sizeof(freqs))
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cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
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return err;
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}
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return -EINVAL;
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}
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int cx18_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
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{
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struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
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if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
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int i;
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int err = 0;
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for (i = 0; i < c->count; i++) {
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err = cx18_try_ctrl(file, fh, &c->controls[i]);
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if (err) {
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c->error_idx = i;
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break;
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}
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}
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return err;
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}
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if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
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return cx2341x_ext_ctrls(&cx->params,
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atomic_read(&cx->ana_capturing),
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c, VIDIOC_TRY_EXT_CTRLS);
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return -EINVAL;
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}
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