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path: root/drivers/media/video/v4l2-common.c
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Diffstat (limited to 'drivers/media/video/v4l2-common.c')
-rw-r--r--drivers/media/video/v4l2-common.c736
1 files changed, 0 insertions, 736 deletions
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
deleted file mode 100644
index 34deb68ae56..00000000000
--- a/drivers/media/video/v4l2-common.c
+++ /dev/null
@@ -1,736 +0,0 @@
-/*
- * Video for Linux Two
- *
- * A generic video device interface for the LINUX operating system
- * using a set of device structures/vectors for low level operations.
- *
- * This file replaces the videodev.c file that comes with the
- * regular kernel distribution.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Author: Bill Dirks <bill@thedirks.org>
- * based on code by Alan Cox, <alan@cymru.net>
- *
- */
-
-/*
- * Video capture interface for Linux
- *
- * A generic video device interface for the LINUX operating system
- * using a set of device structures/vectors for low level operations.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Author: Alan Cox, <alan@redhat.com>
- *
- * Fixes:
- */
-
-/*
- * 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>
- * 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/module.h>
-#include <linux/types.h>
-#include <linux/kernel.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
-
-#include <linux/videodev.h>
-
-MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr");
-MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers");
-MODULE_LICENSE("GPL");
-
-/*
- *
- * V 4 L 2 D R I V E R H E L P E R A P I
- *
- */
-
-/*
- * Video Standard Operations (contributed by Michael Schimek)
- */
-
-
-/* ----------------------------------------------------------------- */
-/* priority handling */
-
-#define V4L2_PRIO_VALID(val) (val == V4L2_PRIORITY_BACKGROUND || \
- val == V4L2_PRIORITY_INTERACTIVE || \
- val == V4L2_PRIORITY_RECORD)
-
-int v4l2_prio_init(struct v4l2_prio_state *global)
-{
- 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)
-{
- if (!V4L2_PRIO_VALID(new))
- return -EINVAL;
- if (*local == new)
- return 0;
-
- atomic_inc(&global->prios[new]);
- if (V4L2_PRIO_VALID(*local))
- atomic_dec(&global->prios[*local]);
- *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)
-{
- if (V4L2_PRIO_VALID(*local))
- atomic_dec(&global->prios[*local]);
- return 0;
-}
-EXPORT_SYMBOL(v4l2_prio_close);
-
-enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)
-{
- if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)
- return V4L2_PRIORITY_RECORD;
- if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)
- return V4L2_PRIORITY_INTERACTIVE;
- if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)
- 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)
-{
- if (*local < v4l2_prio_max(global))
- return -EBUSY;
- return 0;
-}
-EXPORT_SYMBOL(v4l2_prio_check);
-
-/* ----------------------------------------------------------------- */
-
-/* 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);
-
-/* ----------------------------------------------------------------- */
-
-/* Helper function for I2C legacy drivers */
-
-int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver,
- const char *name, int (*probe)(struct i2c_client *))
-{
- struct i2c_client *client;
- int err;
-
- client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (client == 0)
- return -ENOMEM;
-
- client->addr = address;
- client->adapter = adapter;
- client->driver = driver;
- strlcpy(client->name, name, sizeof(client->name));
-
- err = probe(client);
- if (err == 0) {
- i2c_attach_client(client);
- } else {
- kfree(client);
- }
- return err != -ENOMEM ? 0 : err;
-}
-EXPORT_SYMBOL(v4l2_i2c_attach);
-#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 11:42:50 +0000