diff -r 9b2c3c7a1a9c -r 567bb019e3e3 gst_plugins_base/sys/v4l/v4l_calls.c --- 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 - * - * 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 -#endif - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#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; -}