* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * Author: Bill Dirks <bdirks@pacbell.net>
+ * Author: Bill Dirks <bill@thedirks.org>
* based on code by Alan Cox, <alan@cymru.net>
*
*/
* Video4linux 1/2 integration by Justin Schoeman
* <justin@suntiger.ee.up.ac.za>
* 2.4 PROCFS support ported from 2.4 kernels by
- * Iñaki García Etxebarria <garetxe@euskalnet.net>
+ * Iñaki García Etxebarria <garetxe@euskalnet.net>
* Makefile fix by "W. Michael Petullo" <mike@flyn.org>
* 2.4 devfs support ported from 2.4 kernels by
* Dan Merillat <dan@merillat.org>
* Added Gerd Knorrs v4l1 enhancements (Justin Schoeman)
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/errno.h>
+#include <linux/i2c.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/div64.h>
+#define __OLD_VIDIOC_ /* To allow fixing old calls*/
+#include <media/v4l2-common.h>
+#include <media/v4l2-chip-ident.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
-#if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE)
-#include <linux/ust.h>
-#endif
-
-
#include <linux/videodev.h>
MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
*/
-/* Fill in the fields of a v4l2_standard structure according to the
- 'id' and 'transmission' parameters. Returns negative on error. */
-int v4l2_video_std_construct(struct v4l2_standard *vs,
- int id, char *name)
-{
- u32 index = vs->index;
-
- memset(vs, 0, sizeof(struct v4l2_standard));
- vs->index = index;
- vs->id = id;
- if (id & (V4L2_STD_NTSC | V4L2_STD_PAL_M)) {
- vs->frameperiod.numerator = 1001;
- vs->frameperiod.denominator = 30000;
- vs->framelines = 525;
- } else {
- vs->frameperiod.numerator = 1;
- vs->frameperiod.denominator = 25;
- vs->framelines = 625;
- }
- strlcpy(vs->name,name,sizeof(vs->name));
- return 0;
-}
-
-
/* ----------------------------------------------------------------- */
/* priority handling */
memset(global,0,sizeof(*global));
return 0;
}
+EXPORT_SYMBOL(v4l2_prio_init);
int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
enum v4l2_priority new)
*local = new;
return 0;
}
+EXPORT_SYMBOL(v4l2_prio_change);
int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
return v4l2_prio_change(global,local,V4L2_PRIORITY_DEFAULT);
}
+EXPORT_SYMBOL(v4l2_prio_open);
int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
atomic_dec(&global->prios[*local]);
return 0;
}
+EXPORT_SYMBOL(v4l2_prio_close);
enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
{
return V4L2_PRIORITY_BACKGROUND;
return V4L2_PRIORITY_UNSET;
}
+EXPORT_SYMBOL(v4l2_prio_max);
int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local)
{
return -EBUSY;
return 0;
}
-
+EXPORT_SYMBOL(v4l2_prio_check);
/* ----------------------------------------------------------------- */
-/* some arrays for pretty-printing debug messages */
-
-char *v4l2_field_names[] = {
- [V4L2_FIELD_ANY] = "any",
- [V4L2_FIELD_NONE] = "none",
- [V4L2_FIELD_TOP] = "top",
- [V4L2_FIELD_BOTTOM] = "bottom",
- [V4L2_FIELD_INTERLACED] = "interlaced",
- [V4L2_FIELD_SEQ_TB] = "seq-tb",
- [V4L2_FIELD_SEQ_BT] = "seq-bt",
- [V4L2_FIELD_ALTERNATE] = "alternate",
-};
-
-char *v4l2_type_names[] = {
- [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
- [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
- [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out",
- [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
- [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
-};
-
-char *v4l2_ioctl_names[256] = {
-#if __GNUC__ >= 3
- [0 ... 255] = "UNKNOWN",
-#endif
- [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP",
- [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED",
- [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT",
- [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT",
- [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT",
- [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS",
- [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF",
- [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF",
- [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF",
- [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY",
- [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF",
- [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF",
- [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON",
- [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF",
- [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM",
- [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM",
- [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD",
- [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD",
- [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD",
- [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT",
- [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL",
- [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL",
- [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER",
- [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER",
- [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO",
- [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO",
- [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL",
- [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU",
- [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT",
- [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT",
- [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT",
- [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT",
- [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT",
- [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT",
- [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT",
- [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR",
- [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR",
- [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY",
- [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY",
- [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP",
- [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP",
- [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP",
- [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP",
- [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP",
- [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD",
- [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT",
-};
+
+/* 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;
+}
+EXPORT_SYMBOL(v4l2_ctrl_check);
+
+/* 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
+ };
+ static const char *mpeg_stream_vbi_fmt[] = {
+ "No VBI",
+ "Private packet, IVTV format",
+ 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;
+ case V4L2_CID_MPEG_STREAM_VBI_FMT:
+ return mpeg_stream_vbi_fmt;
+ default:
+ return NULL;
+ }
+}
+EXPORT_SYMBOL(v4l2_ctrl_get_menu);
+
+/* 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_AUDIO_MUTE: name = "Audio Mute"; 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_VIDEO_MUTE: name = "Video Mute"; break;
+ case V4L2_CID_MPEG_VIDEO_MUTE_YUV: name = "Video Mute YUV"; 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;
+ case V4L2_CID_MPEG_STREAM_VBI_FMT: name = "Stream VBI Format"; break;
+
+ default:
+ return -EINVAL;
+ }
+ switch (qctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ case V4L2_CID_MPEG_AUDIO_MUTE:
+ case V4L2_CID_MPEG_VIDEO_MUTE:
+ 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:
+ case V4L2_CID_MPEG_STREAM_VBI_FMT:
+ 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;
+}
+EXPORT_SYMBOL(v4l2_ctrl_query_fill);
+
+/* 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_AUDIO_MUTE:
+ return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
+ 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_VIDEO_MUTE:
+ return v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 0);
+ case V4L2_CID_MPEG_VIDEO_MUTE_YUV: /* Init YUV (really YCbCr) to black */
+ return v4l2_ctrl_query_fill(qctrl, 0, 0xffffff, 1, 0x008080);
+ 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);
+ case V4L2_CID_MPEG_STREAM_VBI_FMT:
+ return v4l2_ctrl_query_fill(qctrl,
+ V4L2_MPEG_STREAM_VBI_FMT_NONE,
+ V4L2_MPEG_STREAM_VBI_FMT_IVTV, 1,
+ V4L2_MPEG_STREAM_VBI_FMT_NONE);
+ default:
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL(v4l2_ctrl_query_fill_std);
+
+/* 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;
+}
+EXPORT_SYMBOL(v4l2_ctrl_query_menu);
+
+/* 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 = V4L2_CTRL_ID2CLASS(id);
+ const u32 *pctrl;
+
+ if (ctrl_classes == NULL)
+ return 0;
+
+ /* if no query is desired, then check if the ID is part of ctrl_classes */
+ if ((id & V4L2_CTRL_FLAG_NEXT_CTRL) == 0) {
+ /* find class */
+ while (*ctrl_classes && V4L2_CTRL_ID2CLASS(**ctrl_classes) != ctrl_class)
+ ctrl_classes++;
+ if (*ctrl_classes == NULL)
+ return 0;
+ pctrl = *ctrl_classes;
+ /* find control ID */
+ while (*pctrl && *pctrl != id) pctrl++;
+ return *pctrl ? id : 0;
+ }
+ id &= V4L2_CTRL_ID_MASK;
+ 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_ctrl_next);
+
+int v4l2_chip_match_host(u32 match_type, u32 match_chip)
+{
+ switch (match_type) {
+ case V4L2_CHIP_MATCH_HOST:
+ return match_chip == 0;
+ default:
+ return 0;
+ }
+}
+EXPORT_SYMBOL(v4l2_chip_match_host);
+
+#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
+int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 match_type, u32 match_chip)
+{
+ switch (match_type) {
+ case V4L2_CHIP_MATCH_I2C_DRIVER:
+ return (c != NULL && c->driver != NULL && c->driver->id == match_chip);
+ case V4L2_CHIP_MATCH_I2C_ADDR:
+ return (c != NULL && c->addr == match_chip);
+ default:
+ return 0;
+ }
+}
+EXPORT_SYMBOL(v4l2_chip_match_i2c_client);
+
+int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
+ u32 ident, u32 revision)
+{
+ if (!v4l2_chip_match_i2c_client(c, chip->match_type, chip->match_chip))
+ return 0;
+ if (chip->ident == V4L2_IDENT_NONE) {
+ chip->ident = ident;
+ chip->revision = revision;
+ }
+ else {
+ chip->ident = V4L2_IDENT_AMBIGUOUS;
+ chip->revision = 0;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_chip_ident_i2c_client);
/* ----------------------------------------------------------------- */
-EXPORT_SYMBOL(v4l2_video_std_construct);
+/* Helper function for I2C legacy drivers */
-EXPORT_SYMBOL(v4l2_prio_init);
-EXPORT_SYMBOL(v4l2_prio_change);
-EXPORT_SYMBOL(v4l2_prio_open);
-EXPORT_SYMBOL(v4l2_prio_close);
-EXPORT_SYMBOL(v4l2_prio_max);
-EXPORT_SYMBOL(v4l2_prio_check);
+int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver,
+ const char *name,
+ int (*probe)(struct i2c_client *, const struct i2c_device_id *))
+{
+ struct i2c_client *client;
+ int err;
-EXPORT_SYMBOL(v4l2_field_names);
-EXPORT_SYMBOL(v4l2_type_names);
-EXPORT_SYMBOL(v4l2_ioctl_names);
+ client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (!client)
+ return -ENOMEM;
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = driver;
+ strlcpy(client->name, name, sizeof(client->name));
+
+ err = probe(client, NULL);
+ if (err == 0) {
+ i2c_attach_client(client);
+ } else {
+ kfree(client);
+ }
+ return err != -ENOMEM ? 0 : err;
+}
+EXPORT_SYMBOL(v4l2_i2c_attach);
+#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff