V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoder
It took three core maintainers, over four years of work, eight new i2c
modules, eleven new V4L2 ioctls, three new DVB video ioctls, a Sliced
VBI API, a new MPEG encoder API, an enhanced DVB video MPEG decoding
API, major YUV/OSD contributions from Ian and John, web/wiki/svn/trac
support from Axel Thimm, (hardware) support from Hauppauge, support and
assistance from the v4l-dvb people and the many, many users of ivtv to
finally make it possible to merge this driver into the kernel.
Thank you all!
Signed-off-by: Kevin Thayer <nufan_wfk@yahoo.com>
Signed-off-by: Chris Kennedy <c@groovy.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: John P Harvey <john.p.harvey@btinternet.com>
Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/ivtv/ivtv-controls.c b/drivers/media/video/ivtv/ivtv-controls.c
new file mode 100644
index 0000000..7a876c3
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtv-controls.c
@@ -0,0 +1,303 @@
+/*
+ ioctl control functions
+ Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com>
+ Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
+
+ 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 "ivtv-driver.h"
+#include "ivtv-cards.h"
+#include "ivtv-ioctl.h"
+#include "ivtv-audio.h"
+#include "ivtv-i2c.h"
+#include "ivtv-mailbox.h"
+#include "ivtv-controls.h"
+
+static const u32 user_ctrls[] = {
+ V4L2_CID_USER_CLASS,
+ V4L2_CID_BRIGHTNESS,
+ V4L2_CID_CONTRAST,
+ V4L2_CID_SATURATION,
+ V4L2_CID_HUE,
+ V4L2_CID_AUDIO_VOLUME,
+ V4L2_CID_AUDIO_BALANCE,
+ V4L2_CID_AUDIO_BASS,
+ V4L2_CID_AUDIO_TREBLE,
+ V4L2_CID_AUDIO_MUTE,
+ V4L2_CID_AUDIO_LOUDNESS,
+ 0
+};
+
+static const u32 *ctrl_classes[] = {
+ user_ctrls,
+ cx2341x_mpeg_ctrls,
+ NULL
+};
+
+static int ivtv_queryctrl(struct ivtv *itv, struct v4l2_queryctrl *qctrl)
+{
+ const char *name;
+
+ IVTV_DEBUG_IOCTL("VIDIOC_QUERYCTRL(%08x)\n", qctrl->id);
+
+ qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
+ if (qctrl->id == 0)
+ return -EINVAL;
+
+ switch (qctrl->id) {
+ /* Standard V4L2 controls */
+ case V4L2_CID_BRIGHTNESS:
+ case V4L2_CID_HUE:
+ case V4L2_CID_SATURATION:
+ case V4L2_CID_CONTRAST:
+ if (itv->video_dec_func(itv, VIDIOC_QUERYCTRL, qctrl))
+ qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+ return 0;
+
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ if (ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl))
+ qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+ return 0;
+
+ default:
+ if (cx2341x_ctrl_query(&itv->params, qctrl))
+ qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+ return 0;
+ }
+ strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
+ qctrl->name[sizeof(qctrl->name) - 1] = 0;
+ return 0;
+}
+
+static int ivtv_querymenu(struct ivtv *itv, struct v4l2_querymenu *qmenu)
+{
+ struct v4l2_queryctrl qctrl;
+
+ qctrl.id = qmenu->id;
+ ivtv_queryctrl(itv, &qctrl);
+ return v4l2_ctrl_query_menu(qmenu, &qctrl, cx2341x_ctrl_get_menu(qmenu->id));
+}
+
+static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
+{
+ s32 v = vctrl->value;
+
+ IVTV_DEBUG_IOCTL("VIDIOC_S_CTRL(%08x, %x)\n", vctrl->id, v);
+
+ switch (vctrl->id) {
+ /* Standard V4L2 controls */
+ case V4L2_CID_BRIGHTNESS:
+ case V4L2_CID_HUE:
+ case V4L2_CID_SATURATION:
+ case V4L2_CID_CONTRAST:
+ return itv->video_dec_func(itv, VIDIOC_S_CTRL, vctrl);
+
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ return ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl);
+
+ default:
+ IVTV_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
+{
+ IVTV_DEBUG_IOCTL("VIDIOC_G_CTRL(%08x)\n", vctrl->id);
+
+ switch (vctrl->id) {
+ /* Standard V4L2 controls */
+ case V4L2_CID_BRIGHTNESS:
+ case V4L2_CID_HUE:
+ case V4L2_CID_SATURATION:
+ case V4L2_CID_CONTRAST:
+ return itv->video_dec_func(itv, VIDIOC_G_CTRL, vctrl);
+
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ return ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl);
+ default:
+ IVTV_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
+{
+ if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
+ return -EINVAL;
+ if (atomic_read(&itv->capturing) > 0)
+ return -EBUSY;
+
+ /* First try to allocate sliced VBI buffers if needed. */
+ if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
+ int i;
+
+ for (i = 0; i < IVTV_VBI_FRAMES; i++) {
+ /* Yuck, hardcoded. Needs to be a define */
+ itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
+ if (itv->vbi.sliced_mpeg_data[i] == NULL) {
+ while (--i >= 0) {
+ kfree(itv->vbi.sliced_mpeg_data[i]);
+ itv->vbi.sliced_mpeg_data[i] = NULL;
+ }
+ return -ENOMEM;
+ }
+ }
+ }
+
+ itv->vbi.insert_mpeg = fmt;
+
+ if (itv->vbi.insert_mpeg == 0) {
+ return 0;
+ }
+ /* Need sliced data for mpeg insertion */
+ if (get_service_set(itv->vbi.sliced_in) == 0) {
+ if (itv->is_60hz)
+ itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
+ else
+ itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
+ expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
+ }
+ return 0;
+}
+
+int ivtv_control_ioctls(struct ivtv *itv, unsigned int cmd, void *arg)
+{
+ struct v4l2_control ctrl;
+
+ switch (cmd) {
+ case VIDIOC_QUERYMENU:
+ IVTV_DEBUG_IOCTL("VIDIOC_QUERYMENU\n");
+ return ivtv_querymenu(itv, arg);
+
+ case VIDIOC_QUERYCTRL:
+ return ivtv_queryctrl(itv, arg);
+
+ case VIDIOC_S_CTRL:
+ return ivtv_s_ctrl(itv, arg);
+
+ case VIDIOC_G_CTRL:
+ return ivtv_g_ctrl(itv, arg);
+
+ case VIDIOC_S_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *c = arg;
+
+ if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
+ int i;
+ int err = 0;
+
+ for (i = 0; i < c->count; i++) {
+ ctrl.id = c->controls[i].id;
+ ctrl.value = c->controls[i].value;
+ err = ivtv_s_ctrl(itv, &ctrl);
+ c->controls[i].value = ctrl.value;
+ if (err) {
+ c->error_idx = i;
+ break;
+ }
+ }
+ return err;
+ }
+ IVTV_DEBUG_IOCTL("VIDIOC_S_EXT_CTRLS\n");
+ if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
+ struct cx2341x_mpeg_params p = itv->params;
+ int err = cx2341x_ext_ctrls(&p, arg, cmd);
+
+ if (err)
+ return err;
+
+ if (p.video_encoding != itv->params.video_encoding) {
+ int is_mpeg1 = p.video_encoding ==
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
+ struct v4l2_format fmt;
+
+ /* fix videodecoder resolution */
+ fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
+ fmt.fmt.pix.height = itv->params.height;
+ itv->video_dec_func(itv, VIDIOC_S_FMT, &fmt);
+ }
+ err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
+ if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt) {
+ err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
+ }
+ itv->params = p;
+ itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
+ ivtv_audio_set_audio_clock_freq(itv, p.audio_properties & 0x03);
+ return err;
+ }
+ return -EINVAL;
+ }
+
+ case VIDIOC_G_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *c = arg;
+
+ if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
+ int i;
+ int err = 0;
+
+ for (i = 0; i < c->count; i++) {
+ ctrl.id = c->controls[i].id;
+ ctrl.value = c->controls[i].value;
+ err = ivtv_g_ctrl(itv, &ctrl);
+ c->controls[i].value = ctrl.value;
+ if (err) {
+ c->error_idx = i;
+ break;
+ }
+ }
+ return err;
+ }
+ IVTV_DEBUG_IOCTL("VIDIOC_G_EXT_CTRLS\n");
+ if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
+ return cx2341x_ext_ctrls(&itv->params, arg, cmd);
+ return -EINVAL;
+ }
+
+ case VIDIOC_TRY_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *c = arg;
+
+ IVTV_DEBUG_IOCTL("VIDIOC_TRY_EXT_CTRLS\n");
+ if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
+ return cx2341x_ext_ctrls(&itv->params, arg, cmd);
+ return -EINVAL;
+ }
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}