--- /dev/null
+/* 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 = { 0 };
+ 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;
+ GstTunerChannel *channel;
+
+ vchan.channel = i;
+ if (ioctl (v4lelement->video_fd, VIDIOCGCHAN, &vchan) < 0) {
+ /* Skip this channel */
+ continue;
+ }
+ v4lchannel = g_object_new (GST_TYPE_V4L_TUNER_CHANNEL, NULL);
+ v4lchannel->index = i;
+
+ channel = GST_TUNER_CHANNEL (v4lchannel);
+ channel->label = g_strdup (vchan.name);
+ channel->flags = GST_TUNER_CHANNEL_INPUT;
+ if (vchan.flags & VIDEO_VC_TUNER) {
+ struct video_tuner vtun;
+ gint n;
+
+ for (n = 0; n < vchan.tuners; n++) {
+ 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->freq_multiplicator;
+ channel->max_frequency = vtun.rangehigh * channel->freq_multiplicator;
+ 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_prepend (list, (gpointer) channel);
+ }
+
+ return g_list_reverse (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;
+}
projects / mafwsubrenderer / blobdiff