#if 1
[_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
#endif
- [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS"
+ [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS",
+ [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS",
+ [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS",
+ [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS"
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
printk ("%s: id=%d, value=%d\n", s, p->id, p->value);
break;
}
+ case VIDIOC_G_EXT_CTRLS:
+ case VIDIOC_S_EXT_CTRLS:
+ case VIDIOC_TRY_EXT_CTRLS:
+ {
+ struct v4l2_ext_controls *p = arg;
+ int i;
+
+ printk("%s: ctrl_class=%d, count=%d\n", s, p->ctrl_class, p->count);
+ for (i = 0; i < p->count; i++) {
+ struct v4l2_ext_control *c = &p->controls[i];
+ if (cmd == VIDIOC_G_EXT_CTRLS)
+ printk("%s: id=%d\n", s, c->id);
+ else
+ printk("%s: id=%d, value=%d\n", s, c->id, c->value);
+ }
+ break;
+ }
case VIDIOC_G_CROP:
case VIDIOC_S_CROP:
{
/* ----------------------------------------------------------------- */
+/* Helper functions for control handling */
+
+/* Check for correctness of the ctrl's value based on the data from
+ struct v4l2_queryctrl and the available menu items. Note that
+ menu_items may be NULL, in that case it is ignored. */
+int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
+ const char **menu_items)
+{
+ if (qctrl->flags & V4L2_CTRL_FLAG_DISABLED)
+ return -EINVAL;
+ if (qctrl->flags & V4L2_CTRL_FLAG_GRABBED)
+ return -EBUSY;
+ if (qctrl->type == V4L2_CTRL_TYPE_BUTTON ||
+ qctrl->type == V4L2_CTRL_TYPE_INTEGER64 ||
+ qctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
+ return 0;
+ if (ctrl->value < qctrl->minimum || ctrl->value > qctrl->maximum)
+ return -ERANGE;
+ if (qctrl->type == V4L2_CTRL_TYPE_MENU && menu_items != NULL) {
+ if (menu_items[ctrl->value] == NULL ||
+ menu_items[ctrl->value][0] == '\0')
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* Returns NULL or a character pointer array containing the menu for
+ the given control ID. The pointer array ends with a NULL pointer.
+ An empty string signifies a menu entry that is invalid. This allows
+ drivers to disable certain options if it is not supported. */
+const char **v4l2_ctrl_get_menu(u32 id)
+{
+ static const char *mpeg_audio_sampling_freq[] = {
+ "44.1 kHz",
+ "48 kHz",
+ "32 kHz",
+ NULL
+ };
+ static const char *mpeg_audio_encoding[] = {
+ "Layer I",
+ "Layer II",
+ "Layer III",
+ NULL
+ };
+ static const char *mpeg_audio_l1_bitrate[] = {
+ "32 kbps",
+ "64 kbps",
+ "96 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "288 kbps",
+ "320 kbps",
+ "352 kbps",
+ "384 kbps",
+ "416 kbps",
+ "448 kbps",
+ NULL
+ };
+ static const char *mpeg_audio_l2_bitrate[] = {
+ "32 kbps",
+ "48 kbps",
+ "56 kbps",
+ "64 kbps",
+ "80 kbps",
+ "96 kbps",
+ "112 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "320 kbps",
+ "384 kbps",
+ NULL
+ };
+ static const char *mpeg_audio_l3_bitrate[] = {
+ "32 kbps",
+ "40 kbps",
+ "48 kbps",
+ "56 kbps",
+ "64 kbps",
+ "80 kbps",
+ "96 kbps",
+ "112 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "320 kbps",
+ NULL
+ };
+ static const char *mpeg_audio_mode[] = {
+ "Stereo",
+ "Joint Stereo",
+ "Dual",
+ "Mono",
+ NULL
+ };
+ static const char *mpeg_audio_mode_extension[] = {
+ "Bound 4",
+ "Bound 8",
+ "Bound 12",
+ "Bound 16",
+ NULL
+ };
+ static const char *mpeg_audio_emphasis[] = {
+ "No Emphasis",
+ "50/15 us",
+ "CCITT J17",
+ NULL
+ };
+ static const char *mpeg_audio_crc[] = {
+ "No CRC",
+ "16-bit CRC",
+ NULL
+ };
+ static const char *mpeg_video_encoding[] = {
+ "MPEG-1",
+ "MPEG-2",
+ NULL
+ };
+ static const char *mpeg_video_aspect[] = {
+ "1x1",
+ "4x3",
+ "16x9",
+ "2.21x1",
+ NULL
+ };
+ static const char *mpeg_video_bitrate_mode[] = {
+ "Variable Bitrate",
+ "Constant Bitrate",
+ NULL
+ };
+ static const char *mpeg_stream_type[] = {
+ "MPEG-2 Program Stream",
+ "MPEG-2 Transport Stream",
+ "MPEG-1 System Stream",
+ "MPEG-2 DVD-compatible Stream",
+ "MPEG-1 VCD-compatible Stream",
+ "MPEG-2 SVCD-compatible Stream",
+ NULL
+ };
+
+ switch (id) {
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ return mpeg_audio_sampling_freq;
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ return mpeg_audio_encoding;
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+ return mpeg_audio_l1_bitrate;
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ return mpeg_audio_l2_bitrate;
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+ return mpeg_audio_l3_bitrate;
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ return mpeg_audio_mode;
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+ return mpeg_audio_mode_extension;
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+ return mpeg_audio_emphasis;
+ case V4L2_CID_MPEG_AUDIO_CRC:
+ return mpeg_audio_crc;
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ return mpeg_video_encoding;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ return mpeg_video_aspect;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ return mpeg_video_bitrate_mode;
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ return mpeg_stream_type;
+ default:
+ return NULL;
+ }
+}
+
+/* Fill in a struct v4l2_queryctrl */
+int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def)
+{
+ const char *name;
+
+ qctrl->flags = 0;
+ switch (qctrl->id) {
+ /* USER controls */
+ case V4L2_CID_USER_CLASS: name = "User Controls"; break;
+ case V4L2_CID_AUDIO_VOLUME: name = "Volume"; break;
+ case V4L2_CID_AUDIO_MUTE: name = "Mute"; break;
+ case V4L2_CID_AUDIO_BALANCE: name = "Balance"; break;
+ case V4L2_CID_AUDIO_BASS: name = "Bass"; break;
+ case V4L2_CID_AUDIO_TREBLE: name = "Treble"; break;
+ case V4L2_CID_AUDIO_LOUDNESS: name = "Loudness"; break;
+ case V4L2_CID_BRIGHTNESS: name = "Brightness"; break;
+ case V4L2_CID_CONTRAST: name = "Contrast"; break;
+ case V4L2_CID_SATURATION: name = "Saturation"; break;
+ case V4L2_CID_HUE: name = "Hue"; break;
+
+ /* MPEG controls */
+ case V4L2_CID_MPEG_CLASS: name = "MPEG Encoder Controls"; break;
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: name = "Audio Sampling Frequency"; break;
+ case V4L2_CID_MPEG_AUDIO_ENCODING: name = "Audio Encoding Layer"; break;
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE: name = "Audio Layer I Bitrate"; break;
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE: name = "Audio Layer II Bitrate"; break;
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE: name = "Audio Layer III Bitrate"; break;
+ case V4L2_CID_MPEG_AUDIO_MODE: name = "Audio Stereo Mode"; break;
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: name = "Audio Stereo Mode Extension"; break;
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS: name = "Audio Emphasis"; break;
+ case V4L2_CID_MPEG_AUDIO_CRC: name = "Audio CRC"; break;
+ case V4L2_CID_MPEG_VIDEO_ENCODING: name = "Video Encoding"; break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT: name = "Video Aspect"; break;
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES: name = "Video B Frames"; break;
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE: name = "Video GOP Size"; break;
+ case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: name = "Video GOP Closure"; break;
+ case V4L2_CID_MPEG_VIDEO_PULLDOWN: name = "Video Pulldown"; break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: name = "Video Bitrate Mode"; break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE: name = "Video Bitrate"; break;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: name = "Video Peak Bitrate"; break;
+ case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: name = "Video Temporal Decimation"; break;
+ case V4L2_CID_MPEG_STREAM_TYPE: name = "Stream Type"; break;
+ case V4L2_CID_MPEG_STREAM_PID_PMT: name = "Stream PMT Program ID"; break;
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO: name = "Stream Audio Program ID"; break;
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO: name = "Stream Video Program ID"; break;
+ case V4L2_CID_MPEG_STREAM_PID_PCR: name = "Stream PCR Program ID"; break;
+ case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: name = "Stream PES Audio ID"; break;
+ case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: name = "Stream PES Video ID"; break;
+
+ default:
+ return -EINVAL;
+ }
+ switch (qctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
+ case V4L2_CID_MPEG_VIDEO_PULLDOWN:
+ qctrl->type = V4L2_CTRL_TYPE_BOOLEAN;
+ min = 0;
+ max = step = 1;
+ break;
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+ case V4L2_CID_MPEG_AUDIO_CRC:
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ qctrl->type = V4L2_CTRL_TYPE_MENU;
+ step = 1;
+ break;
+ case V4L2_CID_USER_CLASS:
+ case V4L2_CID_MPEG_CLASS:
+ qctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS;
+ qctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ min = max = step = def = 0;
+ break;
+ default:
+ qctrl->type = V4L2_CTRL_TYPE_INTEGER;
+ break;
+ }
+ switch (qctrl->id) {
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ qctrl->flags |= V4L2_CTRL_FLAG_UPDATE;
+ break;
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ case V4L2_CID_BRIGHTNESS:
+ case V4L2_CID_CONTRAST:
+ case V4L2_CID_SATURATION:
+ case V4L2_CID_HUE:
+ qctrl->flags |= V4L2_CTRL_FLAG_SLIDER;
+ break;
+ }
+ qctrl->minimum = min;
+ qctrl->maximum = max;
+ qctrl->step = step;
+ qctrl->default_value = def;
+ qctrl->reserved[0] = qctrl->reserved[1] = 0;
+ snprintf(qctrl->name, sizeof(qctrl->name), name);
+ return 0;
+}
+
+/* Fill in a struct v4l2_queryctrl with standard values based on
+ the control ID. */
+int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl)
+{
+ switch (qctrl->id) {
+ /* USER controls */
+ case V4L2_CID_USER_CLASS:
+ case V4L2_CID_MPEG_CLASS:
+ return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
+ case V4L2_CID_AUDIO_VOLUME:
+ return v4l2_ctrl_query_fill(qctrl, 0, 65535, 65535 / 100, 58880);
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ return v4l2_ctrl_query_fill(qctrl, 0, 65535, 65535 / 100, 32768);
+ case V4L2_CID_BRIGHTNESS:
+ return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 128);
+ case V4L2_CID_CONTRAST:
+ case V4L2_CID_SATURATION:
+ return v4l2_ctrl_query_fill(qctrl, 0, 127, 1, 64);
+ case V4L2_CID_HUE:
+ return v4l2_ctrl_query_fill(qctrl, -128, 127, 1, 0);
+
+ /* MPEG controls */
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100,
+ V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000, 1,
+ V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_1,
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_3, 1,
+ V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_L1_BITRATE_32K,
+ V4L2_MPEG_AUDIO_L1_BITRATE_448K, 1,
+ V4L2_MPEG_AUDIO_L1_BITRATE_256K);
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_L2_BITRATE_32K,
+ V4L2_MPEG_AUDIO_L2_BITRATE_384K, 1,
+ V4L2_MPEG_AUDIO_L2_BITRATE_224K);
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_L3_BITRATE_32K,
+ V4L2_MPEG_AUDIO_L3_BITRATE_320K, 1,
+ V4L2_MPEG_AUDIO_L3_BITRATE_192K);
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_MODE_STEREO,
+ V4L2_MPEG_AUDIO_MODE_MONO, 1,
+ V4L2_MPEG_AUDIO_MODE_STEREO);
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4,
+ V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16, 1,
+ V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4);
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_EMPHASIS_NONE,
+ V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17, 1,
+ V4L2_MPEG_AUDIO_EMPHASIS_NONE);
+ case V4L2_CID_MPEG_AUDIO_CRC:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_AUDIO_CRC_NONE,
+ V4L2_MPEG_AUDIO_CRC_CRC16, 1,
+ V4L2_MPEG_AUDIO_CRC_NONE);
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_1,
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_2, 1,
+ V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_VIDEO_ASPECT_1x1,
+ V4L2_MPEG_VIDEO_ASPECT_221x100, 1,
+ V4L2_MPEG_VIDEO_ASPECT_4x3);
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ return v4l2_ctrl_query_fill(qctrl, 0, 33, 1, 2);
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ return v4l2_ctrl_query_fill(qctrl, 1, 34, 1, 12);
+ case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
+ return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 1);
+ case V4L2_CID_MPEG_VIDEO_PULLDOWN:
+ return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 6000000);
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
+ return v4l2_ctrl_query_fill(qctrl, 0, 27000000, 1, 8000000);
+ case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION:
+ return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_PS,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD, 1,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
+ case V4L2_CID_MPEG_STREAM_PID_PMT:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 16);
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 260);
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 256);
+ case V4L2_CID_MPEG_STREAM_PID_PCR:
+ return v4l2_ctrl_query_fill(qctrl, 0, (1 << 14) - 1, 1, 259);
+ case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO:
+ return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
+ case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO:
+ return v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 0);
+ default:
+ return -EINVAL;
+ }
+}
+
+/* Fill in a struct v4l2_querymenu based on the struct v4l2_queryctrl and
+ the menu. The qctrl pointer may be NULL, in which case it is ignored. */
+int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, struct v4l2_queryctrl *qctrl,
+ const char **menu_items)
+{
+ int i;
+
+ if (menu_items == NULL ||
+ (qctrl && (qmenu->index < qctrl->minimum || qmenu->index > qctrl->maximum)))
+ return -EINVAL;
+ for (i = 0; i < qmenu->index && menu_items[i]; i++) ;
+ if (menu_items[i] == NULL || menu_items[i][0] == '\0')
+ return -EINVAL;
+ snprintf(qmenu->name, sizeof(qmenu->name), menu_items[qmenu->index]);
+ qmenu->reserved = 0;
+ return 0;
+}
+
+/* ctrl_classes points to an array of u32 pointers, the last element is
+ a NULL pointer. Each u32 array is a 0-terminated array of control IDs.
+ Each array must be sorted low to high and belong to the same control
+ class. The array of u32 pointer must also be sorted, from low class IDs
+ to high class IDs.
+
+ This function returns the first ID that follows after the given ID.
+ When no more controls are available 0 is returned. */
+u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
+{
+ u32 ctrl_class;
+ const u32 *pctrl;
+
+ /* if no query is desired, then just return the control ID */
+ if ((id & V4L2_CTRL_FLAG_NEXT_CTRL) == 0)
+ return id;
+ if (ctrl_classes == NULL)
+ return 0;
+ id &= V4L2_CTRL_ID_MASK;
+ ctrl_class = V4L2_CTRL_ID2CLASS(id);
+ id++; /* select next control */
+ /* find first class that matches (or is greater than) the class of
+ the ID */
+ while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) < ctrl_class)
+ ctrl_classes++;
+ /* no more classes */
+ if (*ctrl_classes == NULL)
+ return 0;
+ pctrl = *ctrl_classes;
+ /* find first ctrl within the class that is >= ID */
+ while (*pctrl && *pctrl < id) pctrl++;
+ if (*pctrl)
+ return *pctrl;
+ /* we are at the end of the controls of the current class. */
+ /* continue with next class if available */
+ ctrl_classes++;
+ if (*ctrl_classes == NULL)
+ return 0;
+ return **ctrl_classes;
+}
+
+/* ----------------------------------------------------------------- */
+
EXPORT_SYMBOL(v4l2_video_std_construct);
EXPORT_SYMBOL(v4l2_prio_init);
EXPORT_SYMBOL(v4l_printk_ioctl);
EXPORT_SYMBOL(v4l_printk_ioctl_arg);
+EXPORT_SYMBOL(v4l2_ctrl_next);
+EXPORT_SYMBOL(v4l2_ctrl_check);
+EXPORT_SYMBOL(v4l2_ctrl_get_menu);
+EXPORT_SYMBOL(v4l2_ctrl_query_menu);
+EXPORT_SYMBOL(v4l2_ctrl_query_fill);
+EXPORT_SYMBOL(v4l2_ctrl_query_fill_std);
+
/*
* Local variables:
* c-basic-offset: 8
git.openpandora.org / pandora-kernel.git / commitdiff