--- a/gst_plugins_base/sys/v4l/v4l_calls.c Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,723 +0,0 @@
-/* GStreamer
- *
- * v4l_calls.c: generic V4L calls
- *
- * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include <gst/gst.h>
-#include <gst/interfaces/tuner.h>
-#include <gst/interfaces/colorbalance.h>
-
-#include "v4l_calls.h"
-#include "gstv4ltuner.h"
-#include "gstv4lcolorbalance.h"
-
-#include "gstv4lsrc.h"
-/* #include "gstv4lmjpegsrc.h" */
-/* #include "gstv4lmjpegsink.h" */
-
-GST_DEBUG_CATEGORY_EXTERN (v4l_debug);
-#define GST_CAT_DEFAULT v4l_debug
-
-static const char *picture_name[] = {
- "Hue",
- "Brightness",
- "Contrast",
- "Saturation",
- NULL
-};
-
-G_GNUC_UNUSED static const char *audio_name[] = {
- "Volume",
- "Mute",
- "Mode",
- NULL
-};
-
-static const char *norm_name[] = {
- "PAL",
- "NTSC",
- "SECAM",
- NULL
-};
-
-/******************************************************
- * gst_v4l_get_capabilities():
- * get the device's capturing capabilities
- * sets v4lelement->vcap and v4lelement->vwin
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_get_capabilities (GstV4lElement * v4lelement)
-{
- GST_DEBUG_OBJECT (v4lelement, "getting capabilities");
- GST_V4L_CHECK_OPEN (v4lelement);
-
- if (ioctl (v4lelement->video_fd, VIDIOCGCAP, &(v4lelement->vcap)) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("error getting capabilities %s of from device %s",
- g_strerror (errno), v4lelement->videodev));
- return FALSE;
- }
-
- if (ioctl (v4lelement->video_fd, VIDIOCGWIN, &(v4lelement->vwin)) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("error getting window properties %s of from device %s",
- g_strerror (errno), v4lelement->videodev));
- return FALSE;
- }
-
- return TRUE;
-}
-
-/******************************************************
- * gst_v4l_set_window_properties():
- * set the device's capturing parameters (vwin)
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_set_window_properties (GstV4lElement * v4lelement)
-{
- struct video_window vwin;
-
- GST_DEBUG_OBJECT (v4lelement, "setting window flags 0x%x to device %s",
- v4lelement->vwin.flags, v4lelement->videodev);
- GST_V4L_CHECK_OPEN (v4lelement);
-
- if (ioctl (v4lelement->video_fd, VIDIOCSWIN, &(v4lelement->vwin)) < 0) {
- GST_DEBUG_OBJECT (v4lelement,
- "could not ioctl window properties 0x%x to device %s",
- v4lelement->vwin.flags, v4lelement->videodev);
- return FALSE;
- }
-
- /* get it again to make sure we have it correctly */
- if (ioctl (v4lelement->video_fd, VIDIOCGWIN, &(vwin)) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("error getting window properties %s of from device %s",
- g_strerror (errno), v4lelement->videodev));
- return FALSE;
- }
- if (vwin.flags != v4lelement->vwin.flags) {
- GST_DEBUG_OBJECT (v4lelement, "set 0x%x but got 0x%x back",
- v4lelement->vwin.flags, vwin.flags);
- return FALSE;
- }
-
- return TRUE;
-}
-
-/******************************************************
- * gst_v4l_open():
- * open the video device (v4lelement->videodev)
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_open (GstV4lElement * v4lelement)
-{
- int num;
-
- GST_DEBUG_OBJECT (v4lelement, "opening device %s", v4lelement->videodev);
- GST_V4L_CHECK_NOT_OPEN (v4lelement);
- GST_V4L_CHECK_NOT_ACTIVE (v4lelement);
-
- /* be sure we have a device */
- if (!v4lelement->videodev) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, NOT_FOUND,
- (_("No device specified.")), (NULL));
- return FALSE;
- }
-
- /* open the device */
- v4lelement->video_fd = open (v4lelement->videodev, O_RDWR);
- if (!GST_V4L_IS_OPEN (v4lelement)) {
- if (errno == ENODEV || errno == ENOENT) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, NOT_FOUND,
- (_("Device \"%s\" does not exist."), v4lelement->videodev), (NULL));
- return FALSE;
- }
- if (errno == EBUSY) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, BUSY,
- (_("Device \"%s\" is already being used."), v4lelement->videodev),
- (NULL));
- return FALSE;
- }
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, OPEN_READ_WRITE,
- (_("Could not open device \"%s\" for reading and writing."),
- v4lelement->videodev), GST_ERROR_SYSTEM);
- return FALSE;
- }
-
- /* get capabilities */
- if (!gst_v4l_get_capabilities (v4lelement)) {
- close (v4lelement->video_fd);
- v4lelement->video_fd = -1;
- return FALSE;
- }
-
- /* device type check */
- if ((GST_IS_V4LSRC (v4lelement) &&
- !(v4lelement->vcap.type & VID_TYPE_CAPTURE))) {
-/* (GST_IS_V4LMJPEGSRC (v4lelement) && */
-/* !(v4lelement->vcap.type & VID_TYPE_MJPEG_ENCODER)) || */
-/* (GST_IS_V4LMJPEGSINK (v4lelement) && */
-/* !(v4lelement->vcap.type & VID_TYPE_MJPEG_DECODER))) { */
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Device opened, but wrong type (0x%x)", v4lelement->vcap.type));
- close (v4lelement->video_fd);
- v4lelement->video_fd = -1;
- return FALSE;
- }
-
- GST_INFO_OBJECT (v4lelement, "Opened device \'%s\' (\'%s\') successfully",
- v4lelement->vcap.name, v4lelement->videodev);
-
- /* norms + inputs, for the tuner interface */
- for (num = 0; norm_name[num] != NULL; num++) {
- GstV4lTunerNorm *v4lnorm = g_object_new (GST_TYPE_V4L_TUNER_NORM,
- NULL);
- GstTunerNorm *norm = GST_TUNER_NORM (v4lnorm);
-
- norm->label = g_strdup (norm_name[num]);
- if (num == 1)
- gst_value_set_fraction (&norm->framerate, 30000, 1001);
- else
- gst_value_set_fraction (&norm->framerate, 25, 1);
-
- v4lnorm->index = num;
- v4lelement->norms = g_list_append (v4lelement->norms, (gpointer) norm);
- }
- v4lelement->channels = gst_v4l_get_chan_names (v4lelement);
-
- for (num = 0; picture_name[num] != NULL; num++) {
- GstV4lColorBalanceChannel *v4lchannel =
- g_object_new (GST_TYPE_V4L_COLOR_BALANCE_CHANNEL, NULL);
- GstColorBalanceChannel *channel = GST_COLOR_BALANCE_CHANNEL (v4lchannel);
-
- channel->label = g_strdup (picture_name[num]);
- channel->min_value = 0;
- channel->max_value = 65535;
- v4lchannel->index = num;
- v4lelement->colors = g_list_append (v4lelement->colors, channel);
- }
-
- GST_DEBUG_OBJECT (v4lelement, "Setting default norm/input");
- gst_v4l_set_chan_norm (v4lelement, 0, 0);
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_close():
- * close the video device (v4lelement->video_fd)
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_close (GstV4lElement * v4lelement)
-{
- GST_DEBUG_OBJECT (v4lelement, "closing device");
- GST_V4L_CHECK_OPEN (v4lelement);
- GST_V4L_CHECK_NOT_ACTIVE (v4lelement);
-
- close (v4lelement->video_fd);
- v4lelement->video_fd = -1;
-
- g_list_foreach (v4lelement->channels, (GFunc) g_object_unref, NULL);
- g_list_free (v4lelement->channels);
- v4lelement->channels = NULL;
-
- g_list_foreach (v4lelement->norms, (GFunc) g_object_unref, NULL);
- g_list_free (v4lelement->norms);
- v4lelement->norms = NULL;
-
- g_list_foreach (v4lelement->colors, (GFunc) g_object_unref, NULL);
- g_list_free (v4lelement->colors);
- v4lelement->colors = NULL;
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_get_num_chans()
- * return value: the number of video input channels
- ******************************************************/
-
-static gint
-gst_v4l_get_num_chans (GstV4lElement * v4lelement)
-{
- GST_DEBUG_OBJECT (v4lelement, "getting number of channels");
- GST_V4L_CHECK_OPEN (v4lelement);
-
- return v4lelement->vcap.channels;
-}
-
-
-/******************************************************
- * gst_v4l_get_chan_names()
- * return value: a GList containing the channel names
- ******************************************************/
-
-GList *
-gst_v4l_get_chan_names (GstV4lElement * v4lelement)
-{
- struct video_channel vchan;
- GList *list = NULL;
- gint i;
-
- GST_DEBUG_OBJECT (v4lelement, "getting channel names");
-
- if (!GST_V4L_IS_OPEN (v4lelement))
- return NULL;
-
- for (i = 0; i < gst_v4l_get_num_chans (v4lelement); i++) {
- GstV4lTunerChannel *v4lchannel = g_object_new (GST_TYPE_V4L_TUNER_CHANNEL,
- NULL);
- GstTunerChannel *channel = GST_TUNER_CHANNEL (v4lchannel);
-
- vchan.channel = i;
- if (ioctl (v4lelement->video_fd, VIDIOCGCHAN, &vchan) < 0)
- return NULL; /* memleak... */
- channel->label = g_strdup (vchan.name);
- channel->flags = GST_TUNER_CHANNEL_INPUT;
- v4lchannel->index = i;
- if (vchan.flags & VIDEO_VC_TUNER) {
- struct video_tuner vtun;
- gint n;
-
- for (n = 0;; n++) {
- if (n >= vchan.tuners) {
- vtun.tuner = 0; /* default */
- } else {
- vtun.tuner = n;
- if (ioctl (v4lelement->video_fd, VIDIOCGTUNER, &vtun) < 0)
- continue; /* no more tuners */
- if (strcmp (vtun.name, vchan.name) != 0) {
- continue; /* not this one */
- }
- }
- v4lchannel->tuner = n;
- channel->flags |= GST_TUNER_CHANNEL_FREQUENCY;
- channel->freq_multiplicator =
- 62.5 * ((vtun.flags & VIDEO_TUNER_LOW) ? 1 : 1000);
- channel->min_frequency = vtun.rangelow;
- channel->max_frequency = vtun.rangehigh;
- channel->min_signal = 0;
- channel->max_signal = 0xffff;
- break;
- }
-
- }
- if (vchan.flags & VIDEO_VC_AUDIO) {
- struct video_audio vaud;
- gint n;
-
- for (n = 0; n < v4lelement->vcap.audios; n++) {
- vaud.audio = n;
- if (ioctl (v4lelement->video_fd, VIDIOCGAUDIO, &vaud) < 0)
- continue;
- if (!strcmp (vaud.name, vchan.name)) {
- v4lchannel->audio = n;
- channel->flags |= GST_TUNER_CHANNEL_AUDIO;
- break;
- }
- }
- }
- list = g_list_append (list, (gpointer) channel);
- }
-
- return list;
-}
-
-
-/******************************************************
- * gst_v4l_get_chan_norm():
- * get the currently active video-channel and it's
- * norm (VIDEO_MODE_{PAL|NTSC|SECAM|AUTO})
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_get_chan_norm (GstV4lElement * v4lelement, gint * channel, gint * norm)
-{
- GST_DEBUG_OBJECT (v4lelement, "getting current channel and norm");
- GST_V4L_CHECK_OPEN (v4lelement);
-
- if (channel)
- *channel = v4lelement->vchan.channel;
- if (norm)
- *norm = v4lelement->vchan.norm;
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_set_chan_norm():
- * set a new active channel and it's norm
- * (VIDEO_MODE_{PAL|NTSC|SECAM|AUTO})
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_set_chan_norm (GstV4lElement * v4lelement, gint channel, gint norm)
-{
- GST_DEBUG_OBJECT (v4lelement, "setting channel = %d, norm = %d (%s)",
- channel, norm, norm_name[norm]);
- GST_V4L_CHECK_OPEN (v4lelement);
- //GST_V4L_CHECK_NOT_ACTIVE (v4lelement);
-
- v4lelement->vchan.channel = channel;
- v4lelement->vchan.norm = norm;
-
- if (ioctl (v4lelement->video_fd, VIDIOCSCHAN, &(v4lelement->vchan)) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error setting the channel/norm settings: %s", g_strerror (errno)));
- return FALSE;
- }
-
- if (ioctl (v4lelement->video_fd, VIDIOCGCHAN, &(v4lelement->vchan)) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting the channel/norm settings: %s", g_strerror (errno)));
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_get_signal():
- * get the current signal
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_get_signal (GstV4lElement * v4lelement, gint tunernum, guint * signal)
-{
- struct video_tuner tuner;
-
- GST_DEBUG_OBJECT (v4lelement, "getting tuner signal");
- GST_V4L_CHECK_OPEN (v4lelement);
-
- tuner.tuner = tunernum;
- if (ioctl (v4lelement->video_fd, VIDIOCGTUNER, &tuner) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting tuner signal: %s", g_strerror (errno)));
- return FALSE;
- }
-
- *signal = tuner.signal;
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_get_frequency():
- * get the current frequency
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_get_frequency (GstV4lElement * v4lelement,
- gint tunernum, gulong * frequency)
-{
- struct video_tuner vtun;
- GstTunerChannel *channel;
-
- GST_DEBUG_OBJECT (v4lelement, "getting tuner frequency");
- GST_V4L_CHECK_OPEN (v4lelement);
-
- channel = gst_tuner_get_channel (GST_TUNER (v4lelement));
-
- /* check that this is the current input */
- vtun.tuner = tunernum;
- if (ioctl (v4lelement->video_fd, VIDIOCGTUNER, &vtun) < 0)
- return FALSE;
- if (strcmp (vtun.name, v4lelement->vchan.name))
- return FALSE;
-
- if (ioctl (v4lelement->video_fd, VIDIOCGFREQ, frequency) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting tuner frequency: %s", g_strerror (errno)));
- return FALSE;
- }
-
- *frequency = *frequency * channel->freq_multiplicator;
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_set_frequency():
- * set frequency
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_set_frequency (GstV4lElement * v4lelement,
- gint tunernum, gulong frequency)
-{
- struct video_tuner vtun;
- GstTunerChannel *channel;
-
- GST_DEBUG_OBJECT (v4lelement, "setting tuner frequency to %lu", frequency);
- GST_V4L_CHECK_OPEN (v4lelement);
-
- channel = gst_tuner_get_channel (GST_TUNER (v4lelement));
-
- /* check that this is the current input */
- vtun.tuner = tunernum;
- if (ioctl (v4lelement->video_fd, VIDIOCGTUNER, &vtun) < 0)
- return FALSE;
- if (strcmp (vtun.name, v4lelement->vchan.name))
- return FALSE;
-
- frequency = frequency / channel->freq_multiplicator;
-
- if (ioctl (v4lelement->video_fd, VIDIOCSFREQ, &frequency) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error setting tuner frequency: %s", g_strerror (errno)));
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_get_picture():
- * get a picture value
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_get_picture (GstV4lElement * v4lelement,
- GstV4lPictureType type, gint * value)
-{
- struct video_picture vpic;
-
- GST_DEBUG_OBJECT (v4lelement, "getting picture property type %d (%s)", type,
- picture_name[type]);
- GST_V4L_CHECK_OPEN (v4lelement);
-
- if (ioctl (v4lelement->video_fd, VIDIOCGPICT, &vpic) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting picture parameters: %s", g_strerror (errno)));
- return FALSE;
- }
-
- switch (type) {
- case V4L_PICTURE_HUE:
- *value = vpic.hue;
- break;
- case V4L_PICTURE_BRIGHTNESS:
- *value = vpic.brightness;
- break;
- case V4L_PICTURE_CONTRAST:
- *value = vpic.contrast;
- break;
- case V4L_PICTURE_SATURATION:
- *value = vpic.colour;
- break;
- default:
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting picture parameters: unknown type %d", type));
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_set_picture():
- * set a picture value
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_set_picture (GstV4lElement * v4lelement,
- GstV4lPictureType type, gint value)
-{
- struct video_picture vpic;
-
- GST_DEBUG_OBJECT (v4lelement, "setting picture type %d (%s) to value %d",
- type, picture_name[type], value);
- GST_V4L_CHECK_OPEN (v4lelement);
-
- if (ioctl (v4lelement->video_fd, VIDIOCGPICT, &vpic) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting picture parameters: %s", g_strerror (errno)));
- return FALSE;
- }
-
- switch (type) {
- case V4L_PICTURE_HUE:
- vpic.hue = value;
- break;
- case V4L_PICTURE_BRIGHTNESS:
- vpic.brightness = value;
- break;
- case V4L_PICTURE_CONTRAST:
- vpic.contrast = value;
- break;
- case V4L_PICTURE_SATURATION:
- vpic.colour = value;
- break;
- default:
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error setting picture parameters: unknown type %d", type));
- return FALSE;
- }
-
- if (ioctl (v4lelement->video_fd, VIDIOCSPICT, &vpic) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error setting picture parameters: %s", g_strerror (errno)));
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_get_audio():
- * get some audio value
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_get_audio (GstV4lElement * v4lelement,
- gint audionum, GstV4lAudioType type, gint * value)
-{
- struct video_audio vau;
-
- GST_DEBUG_OBJECT (v4lelement, "getting audio parameter type %d (%s)", type,
- audio_name[type]);
- GST_V4L_CHECK_OPEN (v4lelement);
-
- vau.audio = audionum;
- if (ioctl (v4lelement->video_fd, VIDIOCGAUDIO, &vau) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting audio parameters: %s", g_strerror (errno)));
- return FALSE;
- }
-
- switch (type) {
- case V4L_AUDIO_MUTE:
- *value = (vau.flags & VIDEO_AUDIO_MUTE);
- break;
- case V4L_AUDIO_VOLUME:
- *value = vau.volume;
- break;
- case V4L_AUDIO_MODE:
- *value = vau.mode;
- break;
- default:
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting audio parameters: unknown type %d", type));
- return FALSE;
- }
-
- return TRUE;
-}
-
-
-/******************************************************
- * gst_v4l_set_audio():
- * set some audio value
- * return value: TRUE on success, FALSE on error
- ******************************************************/
-
-gboolean
-gst_v4l_set_audio (GstV4lElement * v4lelement,
- gint audionum, GstV4lAudioType type, gint value)
-{
- struct video_audio vau;
-
- GST_DEBUG_OBJECT (v4lelement,
- "setting audio parameter type %d (%s) to value %d", type,
- audio_name[type], value);
- GST_V4L_CHECK_OPEN (v4lelement);
-
- vau.audio = audionum;
- if (ioctl (v4lelement->video_fd, VIDIOCGAUDIO, &vau) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error getting audio parameters: %s", g_strerror (errno)));
- return FALSE;
- }
-
- switch (type) {
- case V4L_AUDIO_MUTE:
- if (!(vau.flags & VIDEO_AUDIO_MUTABLE)) {
- GST_ELEMENT_ERROR (v4lelement, CORE, NOT_IMPLEMENTED, (NULL),
- ("Error setting audio mute: (un)setting mute is not supported"));
- return FALSE;
- }
- if (value)
- vau.flags |= VIDEO_AUDIO_MUTE;
- else
- vau.flags &= ~VIDEO_AUDIO_MUTE;
- break;
- case V4L_AUDIO_VOLUME:
- if (!(vau.flags & VIDEO_AUDIO_VOLUME)) {
- GST_ELEMENT_ERROR (v4lelement, CORE, NOT_IMPLEMENTED, (NULL),
- ("Error setting audio volume: setting volume is not supported"));
- return FALSE;
- }
- vau.volume = value;
- break;
- case V4L_AUDIO_MODE:
- vau.mode = value;
- break;
- default:
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error setting audio parameters: unknown type %d", type));
- return FALSE;
- }
-
- if (ioctl (v4lelement->video_fd, VIDIOCSAUDIO, &vau) < 0) {
- GST_ELEMENT_ERROR (v4lelement, RESOURCE, SETTINGS, (NULL),
- ("Error setting audio parameters: %s", g_strerror (errno)));
- return FALSE;
- }
-
- return TRUE;
-}