/*****************************************************************************
* v4l2.c : Video4Linux2 input module for vlc
*****************************************************************************
- * Copyright (C) 2002-2004 the VideoLAN team
- * $Id: v4l.c 16084 2006-07-19 09:45:02Z zorglub $
+ * Copyright (C) 2002-2009 the VideoLAN team
+ * $Id$
*
- * Author: Benjamin Pracht <bigben at videolan dot org>
+ * Authors: Benjamin Pracht <bigben at videolan dot org>
+ * Richard Hosking <richard at hovis dot net>
+ * Antoine Cellerier <dionoea at videolan d.t org>
+ * Dennis Lou <dlou99 at yahoo dot com>
*
* 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
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*
+ * Sections based on the reference V4L2 capture example at
+ * http://v4l2spec.bytesex.org/spec/capture-example.html
+ */
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <vlc/vlc.h>
-#include <vlc/input.h>
-#include <vlc/vout.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_access.h>
+#include <vlc_demux.h>
+#include <vlc_input.h>
+
+#include <ctype.h>
#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/time.h>
#include <sys/ioctl.h>
-#include <sys/errno.h>
-
-#include <asm/types.h> /* for videodev2.h */
+#include <sys/mman.h>
#include <linux/videodev2.h>
+#include <poll.h>
+
+#ifdef HAVE_LIBV4L2
+# include <libv4l2.h>
+#else
+# define v4l2_close close
+# define v4l2_dup dup
+# define v4l2_ioctl ioctl
+# define v4l2_read read
+# define v4l2_mmap mmap
+# define v4l2_munmap munmap
+#endif
+
/*****************************************************************************
* Module descriptior
- *****************************************************************************/
+ *****************************************************************************/
+
+static int DemuxOpen ( vlc_object_t * );
+static void DemuxClose( vlc_object_t * );
+static int AccessOpen ( vlc_object_t * );
+static void AccessClose( vlc_object_t * );
+
+#define STANDARD_TEXT N_( "Standard" )
+#define STANDARD_LONGTEXT N_( \
+ "Video standard (Default, SECAM, PAL, or NTSC)." )
+#define CHROMA_TEXT N_("Video input chroma format")
+#define CHROMA_LONGTEXT N_( \
+ "Force the Video4Linux2 video device to use a specific chroma format " \
+ "(eg. I420 or I422 for raw images, MJPG for M-JPEG compressed input) " \
+ "(Complete list: GREY, I240, RV16, RV15, RV24, RV32, YUY2, YUYV, UYVY, " \
+ "I41N, I422, I420, I411, I410, MJPG)")
+#define INPUT_TEXT N_( "Input" )
+#define INPUT_LONGTEXT N_( \
+ "Input of the card to use (see debug)." )
+#define AUDIO_INPUT_TEXT N_( "Audio input" )
+#define AUDIO_INPUT_LONGTEXT N_( \
+ "Audio input of the card to use (see debug)." )
+#define IOMETHOD_TEXT N_( "IO Method" )
+#define IOMETHOD_LONGTEXT N_( \
+ "IO Method (READ, MMAP, USERPTR)." )
+#define WIDTH_TEXT N_( "Width" )
+#define WIDTH_LONGTEXT N_( \
+ "Force width (-1 for autodetect, 0 for driver default)." )
+#define HEIGHT_TEXT N_( "Height" )
+#define HEIGHT_LONGTEXT N_( \
+ "Force height (-1 for autodetect, 0 for driver default)." )
+#define FPS_TEXT N_( "Framerate" )
+#define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
+ "(0 for autodetect)." )
+
+#define CTRL_RESET_TEXT N_( "Reset v4l2 controls" )
+#define CTRL_RESET_LONGTEXT N_( \
+ "Reset controls to defaults provided by the v4l2 driver." )
+#define BRIGHTNESS_TEXT N_( "Brightness" )
+#define BRIGHTNESS_LONGTEXT N_( \
+ "Brightness of the video input (if supported by the v4l2 driver)." )
+#define CONTRAST_TEXT N_( "Contrast" )
+#define CONTRAST_LONGTEXT N_( \
+ "Contrast of the video input (if supported by the v4l2 driver)." )
+#define SATURATION_TEXT N_( "Saturation" )
+#define SATURATION_LONGTEXT N_( \
+ "Saturation of the video input (if supported by the v4l2 driver)." )
+#define HUE_TEXT N_( "Hue" )
+#define HUE_LONGTEXT N_( \
+ "Hue of the video input (if supported by the v4l2 driver)." )
+#define BLACKLEVEL_TEXT N_( "Black level" )
+#define BLACKLEVEL_LONGTEXT N_( \
+ "Black level of the video input (if supported by the v4l2 driver)." )
+#define AUTOWHITEBALANCE_TEXT N_( "Auto white balance" )
+#define AUTOWHITEBALANCE_LONGTEXT N_( \
+ "Automatically set the white balance of the video input " \
+ "(if supported by the v4l2 driver)." )
+#define DOWHITEBALANCE_TEXT N_( "Do white balance" )
+#define DOWHITEBALANCE_LONGTEXT N_( \
+ "Trigger a white balancing action, useless if auto white balance is " \
+ "activated (if supported by the v4l2 driver)." )
+#define REDBALANCE_TEXT N_( "Red balance" )
+#define REDBALANCE_LONGTEXT N_( \
+ "Red balance of the video input (if supported by the v4l2 driver)." )
+#define BLUEBALANCE_TEXT N_( "Blue balance" )
+#define BLUEBALANCE_LONGTEXT N_( \
+ "Blue balance of the video input (if supported by the v4l2 driver)." )
+#define GAMMA_TEXT N_( "Gamma" )
+#define GAMMA_LONGTEXT N_( \
+ "Gamma of the video input (if supported by the v4l2 driver)." )
+#define EXPOSURE_TEXT N_( "Exposure" )
+#define EXPOSURE_LONGTEXT N_( \
+ "Exposure of the video input (if supported by the v4L2 driver)." )
+#define AUTOGAIN_TEXT N_( "Auto gain" )
+#define AUTOGAIN_LONGTEXT N_( \
+ "Automatically set the video input's gain (if supported by the " \
+ "v4l2 driver)." )
+#define GAIN_TEXT N_( "Gain" )
+#define GAIN_LONGTEXT N_( \
+ "Video input's gain (if supported by the v4l2 driver)." )
+#define HFLIP_TEXT N_( "Horizontal flip" )
+#define HFLIP_LONGTEXT N_( \
+ "Flip the video horizontally (if supported by the v4l2 driver)." )
+#define VFLIP_TEXT N_( "Vertical flip" )
+#define VFLIP_LONGTEXT N_( \
+ "Flip the video vertically (if supported by the v4l2 driver)." )
+#define HCENTER_TEXT N_( "Horizontal centering" )
+#define HCENTER_LONGTEXT N_( \
+ "Set the camera's horizontal centering (if supported by the v4l2 driver)." )
+#define VCENTER_TEXT N_( "Vertical centering" )
+#define VCENTER_LONGTEXT N_( \
+ "Set the camera's vertical centering (if supported by the v4l2 driver)." )
+
+#define AUDIO_VOLUME_TEXT N_( "Volume" )
+#define AUDIO_VOLUME_LONGTEXT N_( \
+ "Volume of the audio input (if supported by the v4l2 driver)." )
+#define AUDIO_BALANCE_TEXT N_( "Balance" )
+#define AUDIO_BALANCE_LONGTEXT N_( \
+ "Balance of the audio input (if supported by the v4l2 driver)." )
+#define AUDIO_MUTE_TEXT N_( "Mute" )
+#define AUDIO_MUTE_LONGTEXT N_( \
+ "Mute audio input (if supported by the v4l2 driver)." )
+#define AUDIO_BASS_TEXT N_( "Bass" )
+#define AUDIO_BASS_LONGTEXT N_( \
+ "Bass level of the audio input (if supported by the v4l2 driver)." )
+#define AUDIO_TREBLE_TEXT N_( "Treble" )
+#define AUDIO_TREBLE_LONGTEXT N_( \
+ "Treble level of the audio input (if supported by the v4l2 driver)." )
+#define AUDIO_LOUDNESS_TEXT N_( "Loudness" )
+#define AUDIO_LOUDNESS_LONGTEXT N_( \
+ "Loudness of the audio input (if supported by the v4l2 driver)." )
+
+#define CACHING_TEXT N_("Caching value in ms")
+#define CACHING_LONGTEXT N_( \
+ "Caching value for V4L2 captures. This " \
+ "value should be set in milliseconds." )
+#define S_CTRLS_TEXT N_("v4l2 driver controls")
+#define S_CTRLS_LONGTEXT N_( \
+ "Set the v4l2 driver controls to the values specified using a comma " \
+ "separated list optionally encapsulated by curly braces " \
+ "(e.g.: {video_bitrate=6000000,audio_crc=0,stream_type=3} ). " \
+ "To list available controls, increase verbosity (-vvv) " \
+ "or use the v4l2-ctl application." )
+
+#define TUNER_TEXT N_("Tuner id")
+#define TUNER_LONGTEXT N_( \
+ "Tuner id (see debug output)." )
+#define FREQUENCY_TEXT N_("Frequency")
+#define FREQUENCY_LONGTEXT N_( \
+ "Tuner frequency in Hz or kHz (see debug output)" )
+#define TUNER_AUDIO_MODE_TEXT N_("Audio mode")
+#define TUNER_AUDIO_MODE_LONGTEXT N_( \
+ "Tuner audio mono/stereo and track selection." )
+
+#define AUDIO_DEPRECATED_ERROR N_( \
+ "Alsa or OSS audio capture in the v4l2 access is deprecated. " \
+ "please use 'v4l2:/""/ :input-slave=alsa:/""/' or " \
+ "'v4l2:/""/ :input-slave=oss:/""/' instead." )
+
+typedef enum {
+ IO_METHOD_READ,
+ IO_METHOD_MMAP,
+ IO_METHOD_USERPTR,
+} io_method;
+
+static const int i_standards_list[] =
+ { V4L2_STD_UNKNOWN, V4L2_STD_SECAM, V4L2_STD_PAL, V4L2_STD_NTSC };
+static const char *const psz_standards_list_text[] =
+ { N_("Default"), N_("SECAM"), N_("PAL"), N_("NTSC") };
-static int Open ( vlc_object_t * );
-static void Close( vlc_object_t * );
+static const int i_iomethod_list[] =
+ { IO_METHOD_READ, IO_METHOD_MMAP, IO_METHOD_USERPTR };
+static const char *const psz_iomethod_list_text[] =
+ { N_("READ"), N_("MMAP"), N_("USERPTR") };
-#define DEV_TEXT N_("Device name")
-#define DEV_LONGTEXT N_( \
- "Name of the device to use. " \
- "If you don't specify anything, /dev/video0 will be used.")
+static const int i_tuner_audio_modes_list[] =
+ { V4L2_TUNER_MODE_MONO, V4L2_TUNER_MODE_STEREO,
+ V4L2_TUNER_MODE_LANG1, V4L2_TUNER_MODE_LANG2,
+ V4L2_TUNER_MODE_SAP, V4L2_TUNER_MODE_LANG1_LANG2 };
+static const char *const psz_tuner_audio_modes_list_text[] =
+ { N_( "Mono" ),
+ N_( "Stereo" ),
+ N_( "Primary language (Analog TV tuners only)" ),
+ N_( "Secondary language (Analog TV tuners only)" ),
+ N_( "Second audio program (Analog TV tuners only)" ),
+ N_( "Primary language left, Secondary language right" ) };
+#define V4L2_DEFAULT "/dev/video0"
+#define CFG_PREFIX "v4l2-"
-vlc_module_begin();
- set_shortname( _("Video4Linux2") );
- set_description( _("Video4Linux2 input") );
- set_category( CAT_INPUT );
- set_subcategory( SUBCAT_INPUT_ACCESS );
+vlc_module_begin ()
+ set_shortname( N_("Video4Linux2") )
+ set_description( N_("Video4Linux2 input") )
+ set_category( CAT_INPUT )
+ set_subcategory( SUBCAT_INPUT_ACCESS )
- add_string( "v4l2-dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
- VLC_FALSE );
+ set_section( N_( "Video input" ), NULL )
+ add_integer( CFG_PREFIX "standard", 0, NULL, STANDARD_TEXT,
+ STANDARD_LONGTEXT, false )
+ change_integer_list( i_standards_list, psz_standards_list_text, NULL )
+ add_string( CFG_PREFIX "chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
+ true )
+ add_integer( CFG_PREFIX "input", 0, NULL, INPUT_TEXT, INPUT_LONGTEXT,
+ true )
+ add_integer( CFG_PREFIX "audio-input", 0, NULL, AUDIO_INPUT_TEXT,
+ AUDIO_INPUT_LONGTEXT, true )
+ add_integer( CFG_PREFIX "io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
+ IOMETHOD_LONGTEXT, true )
+ change_integer_list( i_iomethod_list, psz_iomethod_list_text, NULL )
+ add_integer( CFG_PREFIX "width", -1, NULL, WIDTH_TEXT,
+ WIDTH_LONGTEXT, true )
+ add_integer( CFG_PREFIX "height", -1, NULL, HEIGHT_TEXT,
+ HEIGHT_LONGTEXT, true )
+ add_float( CFG_PREFIX "fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, true )
+ add_integer( CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
+ CACHING_TEXT, CACHING_LONGTEXT, true )
- add_shortcut( "v4l2" );
- set_capability( "access_demux", 10 );
- set_callbacks( Open, Close );
-vlc_module_end();
+ set_section( N_( "Tuner" ), NULL )
+ add_integer( CFG_PREFIX "tuner", 0, NULL, TUNER_TEXT, TUNER_LONGTEXT,
+ true )
+ add_integer( CFG_PREFIX "tuner-frequency", -1, NULL, FREQUENCY_TEXT,
+ FREQUENCY_LONGTEXT, true )
+ add_integer( CFG_PREFIX "tuner-audio-mode", -1, NULL, TUNER_AUDIO_MODE_TEXT,
+ TUNER_AUDIO_MODE_LONGTEXT, true )
+ change_integer_list( i_tuner_audio_modes_list,
+ psz_tuner_audio_modes_list_text, 0 )
+
+ set_section( N_( "Controls" ),
+ N_( "v4l2 driver controls, if supported by your v4l2 driver." ) )
+ add_bool( CFG_PREFIX "controls-reset", false, NULL, CTRL_RESET_TEXT,
+ CTRL_RESET_LONGTEXT, true )
+ add_integer( CFG_PREFIX "brightness", -1, NULL, BRIGHTNESS_TEXT,
+ BRIGHTNESS_LONGTEXT, true )
+ add_integer( CFG_PREFIX "contrast", -1, NULL, CONTRAST_TEXT,
+ CONTRAST_LONGTEXT, true )
+ add_integer( CFG_PREFIX "saturation", -1, NULL, SATURATION_TEXT,
+ SATURATION_LONGTEXT, true )
+ add_integer( CFG_PREFIX "hue", -1, NULL, HUE_TEXT,
+ HUE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "black-level", -1, NULL, BLACKLEVEL_TEXT,
+ BLACKLEVEL_LONGTEXT, true )
+ add_integer( CFG_PREFIX "auto-white-balance", -1, NULL,
+ AUTOWHITEBALANCE_TEXT, AUTOWHITEBALANCE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "do-white-balance", -1, NULL, DOWHITEBALANCE_TEXT,
+ DOWHITEBALANCE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "red-balance", -1, NULL, REDBALANCE_TEXT,
+ REDBALANCE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "blue-balance", -1, NULL, BLUEBALANCE_TEXT,
+ BLUEBALANCE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "gamma", -1, NULL, GAMMA_TEXT,
+ GAMMA_LONGTEXT, true )
+ add_integer( CFG_PREFIX "exposure", -1, NULL, EXPOSURE_TEXT,
+ EXPOSURE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "autogain", -1, NULL, AUTOGAIN_TEXT,
+ AUTOGAIN_LONGTEXT, true )
+ add_integer( CFG_PREFIX "gain", -1, NULL, GAIN_TEXT,
+ GAIN_LONGTEXT, true )
+ add_integer( CFG_PREFIX "hflip", -1, NULL, HFLIP_TEXT,
+ HFLIP_LONGTEXT, true )
+ add_integer( CFG_PREFIX "vflip", -1, NULL, VFLIP_TEXT,
+ VFLIP_LONGTEXT, true )
+ add_integer( CFG_PREFIX "hcenter", -1, NULL, HCENTER_TEXT,
+ HCENTER_LONGTEXT, true )
+ add_integer( CFG_PREFIX "vcenter", -1, NULL, VCENTER_TEXT,
+ VCENTER_LONGTEXT, true )
+ add_integer( CFG_PREFIX "audio-volume", -1, NULL, AUDIO_VOLUME_TEXT,
+ AUDIO_VOLUME_LONGTEXT, true )
+ add_integer( CFG_PREFIX "audio-balance", -1, NULL, AUDIO_BALANCE_TEXT,
+ AUDIO_BALANCE_LONGTEXT, true )
+ add_bool( CFG_PREFIX "audio-mute", false, NULL, AUDIO_MUTE_TEXT,
+ AUDIO_MUTE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "audio-bass", -1, NULL, AUDIO_BASS_TEXT,
+ AUDIO_BASS_LONGTEXT, true )
+ add_integer( CFG_PREFIX "audio-treble", -1, NULL, AUDIO_TREBLE_TEXT,
+ AUDIO_TREBLE_LONGTEXT, true )
+ add_integer( CFG_PREFIX "audio-loudness", -1, NULL, AUDIO_LOUDNESS_TEXT,
+ AUDIO_LOUDNESS_LONGTEXT, true )
+ add_string( CFG_PREFIX "set-ctrls", NULL, NULL, S_CTRLS_TEXT,
+ S_CTRLS_LONGTEXT, true )
+
+ add_obsolete_string( CFG_PREFIX "dev" )
+
+ add_obsolete_string( CFG_PREFIX "adev" )
+ add_obsolete_integer( CFG_PREFIX "audio-method" )
+ add_obsolete_bool( CFG_PREFIX "stereo" )
+ add_obsolete_integer( CFG_PREFIX "samplerate" )
+
+ add_shortcut( "v4l2" )
+ set_capability( "access_demux", 10 )
+ set_callbacks( DemuxOpen, DemuxClose )
+
+ add_submodule ()
+ add_shortcut( "v4l2c" )
+ set_description( N_("Video4Linux2 Compressed A/V") )
+ set_capability( "access", 0 )
+ /* use these when open as access_demux fails; VLC will use another demux */
+ set_callbacks( AccessOpen, AccessClose )
+
+vlc_module_end ()
/*****************************************************************************
* Access: local prototypes
*****************************************************************************/
-static int Demux ( demux_t * );
-static int Control( demux_t *, int, va_list );
+static void CommonClose( vlc_object_t *, demux_sys_t * );
+static void ParseMRL( demux_sys_t *, char *, vlc_object_t * );
+static void GetV4L2Params( demux_sys_t *, vlc_object_t * );
+static void SetAvailControlsByString( vlc_object_t *, demux_sys_t *, int );
+
+static int DemuxControl( demux_t *, int, va_list );
+static int AccessControl( access_t *, int, va_list );
+
+static int Demux( demux_t * );
+static ssize_t AccessRead( access_t *, uint8_t *, size_t );
+
+static block_t* GrabVideo( demux_t *p_demux );
+static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t );
+
+static bool IsPixelFormatSupported( demux_t *p_demux,
+ unsigned int i_pixelformat );
+
+static int OpenVideoDev( vlc_object_t *, demux_sys_t *, bool );
+static bool ProbeVideoDev( vlc_object_t *, demux_sys_t *,
+ const char *psz_device );
+
+static int ControlList( vlc_object_t *, int , bool, bool );
+static int Control( vlc_object_t *, int i_fd,
+ const char *psz_name, int i_cid, int i_value );
+
+static int DemuxControlCallback( vlc_object_t *p_this, const char *psz_var,
+ vlc_value_t oldval, vlc_value_t newval,
+ void *p_data );
+static int DemuxControlResetCallback( vlc_object_t *p_this, const char *psz_var,
+ vlc_value_t oldval, vlc_value_t newval,
+ void *p_data );
+static int AccessControlCallback( vlc_object_t *p_this, const char *psz_var,
+ vlc_value_t oldval, vlc_value_t newval,
+ void *p_data );
+static int AccessControlResetCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval,
+ vlc_value_t newval, void *p_data );
+
+static const struct
+{
+ unsigned int i_v4l2;
+ int i_fourcc;
+ int i_rmask;
+ int i_gmask;
+ int i_bmask;
+} v4l2chroma_to_fourcc[] =
+{
+ /* Raw data types */
+ { V4L2_PIX_FMT_GREY, VLC_FOURCC('G','R','E','Y'), 0, 0, 0 },
+ { V4L2_PIX_FMT_HI240, VLC_FOURCC('I','2','4','0'), 0, 0, 0 },
+ { V4L2_PIX_FMT_RGB555, VLC_FOURCC('R','V','1','5'), 0x001f,0x03e0,0x7c00 },
+ { V4L2_PIX_FMT_RGB565, VLC_FOURCC('R','V','1','6'), 0x001f,0x07e0,0xf800 },
+ /* Won't work since we don't know how to handle such gmask values
+ * correctly
+ { V4L2_PIX_FMT_RGB555X, VLC_FOURCC('R','V','1','5'), 0x007c,0xe003,0x1f00 },
+ { V4L2_PIX_FMT_RGB565X, VLC_FOURCC('R','V','1','6'), 0x00f8,0xe007,0x1f00 },
+ */
+ { V4L2_PIX_FMT_BGR24, VLC_FOURCC('R','V','2','4'), 0xff0000,0xff00,0xff },
+ { V4L2_PIX_FMT_RGB24, VLC_FOURCC('R','V','2','4'), 0xff,0xff00,0xff0000 },
+ { V4L2_PIX_FMT_BGR32, VLC_FOURCC('R','V','3','2'), 0xff0000,0xff00,0xff },
+ { V4L2_PIX_FMT_RGB32, VLC_FOURCC('R','V','3','2'), 0xff,0xff00,0xff0000 },
+ { V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','2'), 0, 0, 0 },
+ { V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','V'), 0, 0, 0 },
+ { V4L2_PIX_FMT_UYVY, VLC_FOURCC('U','Y','V','Y'), 0, 0, 0 },
+ { V4L2_PIX_FMT_Y41P, VLC_FOURCC('I','4','1','N'), 0, 0, 0 },
+ { V4L2_PIX_FMT_YUV422P, VLC_FOURCC('I','4','2','2'), 0, 0, 0 },
+ { V4L2_PIX_FMT_YVU420, VLC_FOURCC('Y','V','1','2'), 0, 0, 0 },
+ { V4L2_PIX_FMT_YUV411P, VLC_FOURCC('I','4','1','1'), 0, 0, 0 },
+ { V4L2_PIX_FMT_YUV410, VLC_FOURCC('I','4','1','0'), 0, 0, 0 },
+
+ /* Raw data types, not in V4L2 spec but still in videodev2.h and supported
+ * by VLC */
+ { V4L2_PIX_FMT_YUV420, VLC_FOURCC('I','4','2','0'), 0, 0, 0 },
+ /* FIXME { V4L2_PIX_FMT_RGB444, VLC_FOURCC('R','V','3','2') }, */
+
+ /* Compressed data types */
+ { V4L2_PIX_FMT_MJPEG, VLC_FOURCC('M','J','P','G'), 0, 0, 0 },
+#if 0
+ { V4L2_PIX_FMT_JPEG, VLC_FOURCC('J','P','E','G') },
+ { V4L2_PIX_FMT_DV, VLC_FOURCC('?','?','?','?') },
+ { V4L2_PIX_FMT_MPEG, VLC_FOURCC('?','?','?','?') },
+#endif
+ { 0, 0, 0, 0, 0 }
+};
+
+/**
+ * List of V4L2 chromas were confident enough to use as fallbacks if the
+ * user hasn't provided a --v4l2-chroma value.
+ *
+ * Try YUV chromas first, then RGB little endian and MJPEG as last resort.
+ */
+static const __u32 p_chroma_fallbacks[] =
+{ V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_YVU420, V4L2_PIX_FMT_YUV422P,
+ V4L2_PIX_FMT_YUYV, V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_BGR24,
+ V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_MJPEG };
+
+static const struct
+{
+ const char *psz_name;
+ unsigned int i_cid;
+} controls[] =
+{
+ { "brightness", V4L2_CID_BRIGHTNESS },
+ { "contrast", V4L2_CID_CONTRAST },
+ { "saturation", V4L2_CID_SATURATION },
+ { "hue", V4L2_CID_HUE },
+ { "audio-volume", V4L2_CID_AUDIO_VOLUME },
+ { "audio-balance", V4L2_CID_AUDIO_BALANCE },
+ { "audio-bass", V4L2_CID_AUDIO_BASS },
+ { "audio-treble", V4L2_CID_AUDIO_TREBLE },
+ { "audio-mute", V4L2_CID_AUDIO_MUTE },
+ { "audio-loudness", V4L2_CID_AUDIO_LOUDNESS },
+ { "black-level", V4L2_CID_BLACK_LEVEL },
+ { "auto-white-balance", V4L2_CID_AUTO_WHITE_BALANCE },
+ { "do-white-balance", V4L2_CID_DO_WHITE_BALANCE },
+ { "red-balance", V4L2_CID_RED_BALANCE },
+ { "blue-balance", V4L2_CID_BLUE_BALANCE },
+ { "gamma", V4L2_CID_GAMMA },
+ { "exposure", V4L2_CID_EXPOSURE },
+ { "autogain", V4L2_CID_AUTOGAIN },
+ { "gain", V4L2_CID_GAIN },
+ { "hflip", V4L2_CID_HFLIP },
+ { "vflip", V4L2_CID_VFLIP },
+ { "hcenter", V4L2_CID_HCENTER },
+ { "vcenter", V4L2_CID_VCENTER },
+ { NULL, 0 }
+};
-static int OpenDev( demux_t * );
+struct buffer_t
+{
+ void * start;
+ size_t length;
+};
struct demux_sys_t
{
- char *psz_device;
+ char *psz_device; /* Main device from MRL */
+ int i_fd;
+
+ char *psz_requested_chroma;
- int i_fd_video;
+ /* Video */
+ io_method io;
+
+ int i_cache;
struct v4l2_capability dev_cap;
int i_input;
struct v4l2_input *p_inputs;
+ int i_selected_input;
+
+ int i_standard;
+ struct v4l2_standard *p_standards;
+ v4l2_std_id i_selected_standard_id;
int i_audio;
/* V4L2 devices cannot have more than 32 audio inputs */
struct v4l2_audio p_audios[32];
+ int i_selected_audio_input;
int i_tuner;
struct v4l2_tuner *p_tuners;
+
+ int i_codec;
+ struct v4l2_fmtdesc *p_codecs;
+
+ struct buffer_t *p_buffers;
+ unsigned int i_nbuffers;
+
+ int i_width;
+ int i_height;
+ float f_fps; /* <= 0.0 mean to grab at full rate */
+ mtime_t i_video_pts; /* only used when f_fps > 0 */
+ int i_fourcc;
+
+ es_out_id_t *p_es;
+
+ /* Tuner */
+ int i_cur_tuner;
+ int i_frequency;
+ int i_audio_mode;
+
+ /* Controls */
+ char *psz_set_ctrls;
};
+static int FindMainDevice( vlc_object_t *p_this, demux_sys_t *p_sys,
+ bool b_demux )
+{
+ /* TODO: if using default device, loop through all /dev/video* until
+ * one works */
+ msg_Dbg( p_this, "opening device '%s'", p_sys->psz_device );
+ if( ProbeVideoDev( p_this, p_sys, p_sys->psz_device ) )
+ {
+ msg_Dbg( p_this, "'%s' is a video device", p_sys->psz_device );
+ p_sys->i_fd = OpenVideoDev( p_this, p_sys, b_demux );
+ }
+
+ if( p_sys->i_fd < 0 ) return VLC_EGENERIC;
+ return VLC_SUCCESS;
+}
+
/*****************************************************************************
- * Open: opens v4l device
+ * DemuxOpen: opens v4l2 device, access_demux callback
*****************************************************************************
*
* url: <video device>::::
*
*****************************************************************************/
-static int Open( vlc_object_t *p_this )
+static int DemuxOpen( vlc_object_t *p_this )
{
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
- demux_sys_t sys;
+
+ /* Only when selected */
+ if( strcmp( p_demux->psz_access, "v4l2" ) )
+ return VLC_EGENERIC;
/* Set up p_demux */
+ p_demux->pf_control = DemuxControl;
p_demux->pf_demux = Demux;
- p_demux->pf_control = Control;
p_demux->info.i_update = 0;
p_demux->info.i_title = 0;
p_demux->info.i_seekpoint = 0;
- p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
+ p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
if( p_sys == NULL ) return VLC_ENOMEM;
- memset( p_sys, 0, sizeof( demux_sys_t ) );
- p_sys->psz_device = var_CreateGetString( p_demux, "v4l2-dev" );
+ GetV4L2Params(p_sys, (vlc_object_t *) p_demux);
- if( OpenDev( p_demux ) < 0 ) return VLC_EGENERIC;
+ ParseMRL( p_sys, p_demux->psz_path, (vlc_object_t *) p_demux );
+
+ if( FindMainDevice( p_this, p_sys, true ) != VLC_SUCCESS)
+ {
+ DemuxClose( p_this );
+ return VLC_EGENERIC;
+ }
return VLC_SUCCESS;
}
/*****************************************************************************
- * Close: close device, free resources
+ * GetV4L2Params: fill in p_sys parameters (shared by DemuxOpen and AccessOpen)
*****************************************************************************/
-static void Close( vlc_object_t *p_this )
+static void GetV4L2Params( demux_sys_t *p_sys, vlc_object_t *p_obj )
{
- demux_t *p_demux = (demux_t *)p_this;
- demux_sys_t *p_sys = p_demux->p_sys;
+ p_sys->i_video_pts = -1;
- if( p_sys->psz_device ) free( p_sys->psz_device );
- if( p_sys->p_inputs ) free( p_sys->p_inputs );
+ p_sys->i_selected_standard_id =
+ i_standards_list[var_CreateGetInteger( p_obj, "v4l2-standard" )];
- free( p_sys );
-}
+ p_sys->i_selected_input = var_CreateGetInteger( p_obj, "v4l2-input" );
+ p_sys->i_selected_audio_input =
+ var_CreateGetInteger( p_obj, "v4l2-audio-input" );
-/*****************************************************************************
- * Control:
- *****************************************************************************/
-static int Control( demux_t *p_demux, int i_query, va_list args )
-{
-}
+ p_sys->io = var_CreateGetInteger( p_obj, "v4l2-io" );
-/*****************************************************************************
- * Demux:
- *****************************************************************************/
-static int Demux( demux_t *p_demux )
-{
-}
+ p_sys->i_width = var_CreateGetInteger( p_obj, "v4l2-width" );
+ p_sys->i_height = var_CreateGetInteger( p_obj, "v4l2-height" );
+
+ var_Create( p_obj, "v4l2-controls-reset", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
+
+ p_sys->f_fps = var_CreateGetFloat( p_obj, "v4l2-fps" );
+ p_sys->psz_requested_chroma = var_CreateGetString( p_obj, "v4l2-chroma" );
+
+ p_sys->i_cache = var_CreateGetInteger( p_obj, "v4l2-caching" );
+ p_sys->i_cur_tuner = var_CreateGetInteger( p_obj, "v4l2-tuner" );
+ p_sys->i_frequency = var_CreateGetInteger( p_obj, "v4l2-tuner-frequency" );
+ p_sys->i_audio_mode = var_CreateGetInteger( p_obj, "v4l2-tuner-audio-mode" );
+
+ p_sys->psz_set_ctrls = var_CreateGetString( p_obj, "v4l2-set-ctrls" );
+
+ p_sys->psz_device = NULL;
+ p_sys->i_fd = -1;
+
+ p_sys->p_es = NULL;
+}
/*****************************************************************************
- * OpenDev: open the device and probe for capabilities
+ * ParseMRL: parse the options contained in the MRL
*****************************************************************************/
-int OpenDev( demux_t *p_demux )
+static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
{
- int i_device_index;
+ char *psz_dup = strdup( psz_path );
+ char *psz_parser = psz_dup;
- int i_fd;
- demux_sys_t *p_sys = p_demux->p_sys;
-
- if( ( i_fd = open( p_sys->psz_device, O_RDWR ) ) < 0 )
+ while( *psz_parser && *psz_parser != ':' )
{
- msg_Err( p_demux, "cannot open device (%s)", strerror( errno ) );
- goto open_failed;
+ psz_parser++;
}
- /* Get device capabilites */
-
- if( ioctl( i_fd, VIDIOC_QUERYCAP, &p_sys->dev_cap ) < 0 )
+ if( *psz_parser == ':' )
{
- msg_Err( p_demux, "cannot get capabilities (%s)", strerror( errno ) );
- goto open_failed;
- }
+ /* read options */
+ for( ;; )
+ {
+ *psz_parser++ = '\0';
- msg_Dbg( p_demux, "V4L2 device: %s using driver: %s (version: %u.%u.%u) on %s",
- p_sys->dev_cap.card,
- p_sys->dev_cap.driver,
- (p_sys->dev_cap.version >> 16) & 0xFF,
- (p_sys->dev_cap.version >> 8) & 0xFF,
- p_sys->dev_cap.version & 0xFF,
- p_sys->dev_cap.bus_info );
+ if( !strncmp( psz_parser, "standard=", strlen( "standard=" ) ) )
+ {
+ psz_parser += strlen( "standard=" );
+ if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
+ {
+ p_sys->i_selected_standard_id = V4L2_STD_PAL;
+ psz_parser += strlen( "pal" );
+ }
+ else if( !strncmp( psz_parser, "ntsc", strlen( "ntsc" ) ) )
+ {
+ p_sys->i_selected_standard_id = V4L2_STD_NTSC;
+ psz_parser += strlen( "ntsc" );
+ }
+ else if( !strncmp( psz_parser, "secam", strlen( "secam" ) ) )
+ {
+ p_sys->i_selected_standard_id = V4L2_STD_SECAM;
+ psz_parser += strlen( "secam" );
+ }
+ else if( !strncmp( psz_parser, "default", strlen( "default" ) ) )
+ {
+ p_sys->i_selected_standard_id = V4L2_STD_UNKNOWN;
+ psz_parser += strlen( "default" );
+ }
+ else
+ {
+ p_sys->i_selected_standard_id = i_standards_list[strtol( psz_parser, &psz_parser, 0 )];
+ }
+ }
+ else if( !strncmp( psz_parser, "chroma=", strlen( "chroma=" ) ) )
+ {
+ int i_len;
- msg_Dbg( p_demux, "The device has the capabilities: (%c) Video Capure, "
- "(%c) Audio, "
- "(%c) Tuner",
- ( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE ? 'X':' '),
- ( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO ? 'X':' '),
- ( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER ? 'X':' ') );
-
+ psz_parser += strlen( "chroma=" );
+ if( strchr( psz_parser, ':' ) )
+ {
+ i_len = strchr( psz_parser, ':' ) - psz_parser;
+ }
+ else
+ {
+ i_len = strlen( psz_parser );
+ }
- /* Now, enumerate all the video inputs. This is useless at the moment
- since we have no way to present that info to the user except with
- debug messages */
+ free( p_sys->psz_requested_chroma );
+ p_sys->psz_requested_chroma = strndup( psz_parser, i_len );
- if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
- {
- while( ioctl( i_fd, VIDIOC_S_INPUT, &p_sys->i_input ) >= 0 )
- {
- p_sys->i_input++;
- }
+ psz_parser += i_len;
+ }
+ else if( !strncmp( psz_parser, "input=", strlen( "input=" ) ) )
+ {
+ p_sys->i_selected_input = strtol( psz_parser + strlen( "input=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "audio-input=", strlen( "audio-input=" ) ) )
+ {
+ p_sys->i_selected_audio_input = strtol( psz_parser + strlen( "audio-input=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "fps=", strlen( "fps=" ) ) )
+ {
+ p_sys->f_fps = strtof( psz_parser + strlen( "fps=" ),
+ &psz_parser );
+ }
+ else if( !strncmp( psz_parser, "io=", strlen( "io=" ) ) )
+ {
+ psz_parser += strlen( "io=" );
+ if( !strncmp( psz_parser, "read", strlen( "read" ) ) )
+ {
+ p_sys->io = IO_METHOD_READ;
+ psz_parser += strlen( "read" );
+ }
+ else if( !strncmp( psz_parser, "mmap", strlen( "mmap" ) ) )
+ {
+ p_sys->io = IO_METHOD_MMAP;
+ psz_parser += strlen( "mmap" );
+ }
+ else if( !strncmp( psz_parser, "userptr", strlen( "userptr" ) ) )
+ {
+ p_sys->io = IO_METHOD_USERPTR;
+ psz_parser += strlen( "userptr" );
+ }
+ else
+ {
+ p_sys->io = strtol( psz_parser, &psz_parser, 0 );
+ }
+ }
+ else if( !strncmp( psz_parser, "width=",
+ strlen( "width=" ) ) )
+ {
+ p_sys->i_width =
+ strtol( psz_parser + strlen( "width=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "height=",
+ strlen( "height=" ) ) )
+ {
+ p_sys->i_height =
+ strtol( psz_parser + strlen( "height=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "controls-reset",
+ strlen( "controls-reset" ) ) )
+ {
+ var_SetBool( p_obj, "v4l2-controls-reset", true );
+ psz_parser += strlen( "controls-reset" );
+ }
+#if 0
+ else if( !strncmp( psz_parser, "brightness=",
+ strlen( "brightness=" ) ) )
+ {
+ var_SetInteger( p_obj, "brightness",
+ strtol( psz_parser + strlen( "brightness=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "contrast=",
+ strlen( "contrast=" ) ) )
+ {
+ var_SetInteger( p_obj, "contrast",
+ strtol( psz_parser + strlen( "contrast=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "saturation=",
+ strlen( "saturation=" ) ) )
+ {
+ var_SetInteger( p_obj, "saturation",
+ strtol( psz_parser + strlen( "saturation=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "hue=",
+ strlen( "hue=" ) ) )
+ {
+ var_SetInteger( p_obj, "hue",
+ strtol( psz_parser + strlen( "hue=" ),
+ &psz_parser, 0 ) );
+ }
+ else if( !strncmp( psz_parser, "gamma=",
+ strlen( "gamma=" ) ) )
+ {
+ var_SetInteger( p_obj, "gamma",
+ strtol( psz_parser + strlen( "gamma=" ),
+ &psz_parser, 0 ) );
+ }
+#endif
+ else if( !strncmp( psz_parser, "caching=", strlen( "caching=" ) ) )
+ {
+ p_sys->i_cache = strtol( psz_parser + strlen( "caching=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "tuner=", strlen( "tuner=" ) ) )
+ {
+ p_sys->i_cur_tuner = strtol( psz_parser + strlen( "tuner=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "tuner-frequency=", strlen( "tuner-frequency=" ) ) )
+ {
+ p_sys->i_frequency = strtol( psz_parser
+ + strlen( "tuner-frequency=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "tuner-audio-mode=", strlen( "tuner-audio-mode=" ) ) )
+ {
+ p_sys->i_audio_mode = strtol( psz_parser
+ + strlen( "tuner-audio-mode=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "set-ctrls=", strlen( "set-ctrls=" )) )
+ {
+ int i_len;
- p_sys->p_inputs = malloc( p_sys->i_input * sizeof( struct v4l2_input ) );
- if( !p_sys->p_inputs ) goto open_failed;
- memset( p_sys->p_inputs, 0, sizeof( struct v4l2_input ) );
+ psz_parser += strlen( "set-ctrls=" );
+ if( strchr( psz_parser, ':' ) )
+ {
+ i_len = strchr( psz_parser, ':' ) - psz_parser;
+ }
+ else
+ {
+ i_len = strlen( psz_parser );
+ }
- for( i_device_index = 0; i_device_index < p_sys->i_input; i_device_index++ )
- {
- p_sys->p_inputs[i_device_index].index = i_device_index;
+ p_sys->psz_set_ctrls = strndup( psz_parser, i_len );
+
+ psz_parser += i_len;
+ }
+ else if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) )
+ || !strncmp( psz_parser, "samplerate=", strlen( "samplerate=" ) )
+ || !strncmp( psz_parser, "audio-method", strlen( "audio-method" ) )
+ || !strncmp( psz_parser, "stereo", strlen( "stereo" ) )
+ || !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
+ {
+ if( strchr( psz_parser, ':' ) )
+ {
+ psz_parser = strchr( psz_parser, ':' );
+ }
+ else
+ {
+ psz_parser += strlen( psz_parser );
+ }
- if( ioctl( i_fd, VIDIOC_ENUMINPUT, &p_sys->p_inputs[i_device_index] ) )
+ msg_Err( p_obj, AUDIO_DEPRECATED_ERROR );
+ }
+ else
{
- msg_Err( p_demux, "cannot get video input characteristics (%s)",
- strerror( errno ) );
- goto open_failed;
+ char *psz_unk = strchr( psz_parser, ':' );
+ if (psz_unk)
+ psz_unk = strndup( psz_parser, psz_unk - psz_parser );
+ else
+ psz_unk = strdup( psz_parser);
+ msg_Warn( p_obj, "unknown option %s", psz_unk );
+ free (psz_unk);
+ }
+
+ while( *psz_parser && *psz_parser != ':' )
+ {
+ psz_parser++;
+ }
+
+ if( *psz_parser == '\0' )
+ {
+ break;
}
- msg_Dbg( p_demux, "Video input %i (%s) has type: %s",
- i_device_index,
- p_sys->p_inputs[i_device_index].name,
- p_sys->p_inputs[i_device_index].type
- == V4L2_INPUT_TYPE_TUNER ?
- "Tuner adapter" :
- "External analog input" );
}
}
- /* initialize the structures for the ioctls */
- for( i_device_index = 0; i_device_index < 32; i_device_index++ )
- {
- p_sys->p_audios[i_device_index].index = i_device_index;
- }
+ /* Main device */
+ if( *psz_dup )
+ p_sys->psz_device = strdup( psz_dup );
+ else
+ p_sys->psz_device = strdup( V4L2_DEFAULT );
+ free( psz_dup );
+}
- /* Probe audio inputs */
+/*****************************************************************************
+ * Close: close device, free resources
+ *****************************************************************************/
+static void AccessClose( vlc_object_t *p_this )
+{
+ access_t *p_access = (access_t *)p_this;
+ demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
- if( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO )
+ CommonClose( p_this, p_sys );
+}
+
+static void DemuxClose( vlc_object_t *p_this )
+{
+ struct v4l2_buffer buf;
+ enum v4l2_buf_type buf_type;
+ unsigned int i;
+
+ demux_t *p_demux = (demux_t *)p_this;
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ /* Stop video capture */
+ if( p_sys->i_fd >= 0 )
{
- while( p_sys->i_audio < 32 &&
- ioctl( i_fd, VIDIOC_S_AUDIO, &p_sys->p_audios[p_sys->i_audio] ) >= 0 )
+ switch( p_sys->io )
{
- if( ioctl( i_fd, VIDIOC_G_AUDIO, &p_sys->p_audios[ p_sys->i_audio] ) < 0 )
+ case IO_METHOD_READ:
+ /* Nothing to do */
+ break;
+
+ case IO_METHOD_MMAP:
+ case IO_METHOD_USERPTR:
+ /* Some drivers 'hang' internally if this is not done before streamoff */
+ for( unsigned int i = 0; i < p_sys->i_nbuffers; i++ )
{
- msg_Err( p_demux, "cannot get video input characteristics (%s)",
- strerror( errno ) );
- goto open_failed;
+ memset( &buf, 0, sizeof(buf) );
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = ( p_sys->io == IO_METHOD_USERPTR ) ?
+ V4L2_MEMORY_USERPTR : V4L2_MEMORY_MMAP;
+ v4l2_ioctl( p_sys->i_fd, VIDIOC_DQBUF, &buf ); /* ignore result */
}
- msg_Dbg( p_demux, "Audio device %i (%s) is %s",
- p_sys->i_audio,
- p_sys->p_audios[p_sys->i_audio].name,
- p_sys->p_audios[p_sys->i_audio].capability &
- V4L2_AUDCAP_STEREO ?
- "Stereo" : "Mono" );
+ buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ if( v4l2_ioctl( p_sys->i_fd, VIDIOC_STREAMOFF, &buf_type ) < 0 ) {
+ msg_Err( p_this, "VIDIOC_STREAMOFF failed" );
+ }
- p_sys->i_audio++;
+ break;
}
}
- if( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER )
- {
- struct v4l2_tuner tuner;
- memset( &tuner, 0, sizeof( struct v4l2_tuner ) );
-
- while( ioctl( i_fd, VIDIOC_S_TUNER, &tuner ) >= 0 )
+ /* Free Video Buffers */
+ if( p_sys->p_buffers ) {
+ switch( p_sys->io )
{
- p_sys->i_tuner++;
- tuner.index = p_sys->i_tuner;
- }
-
- p_sys->p_tuners = malloc( p_sys->i_tuner * sizeof( struct v4l2_tuner ) );
- if( !p_sys->p_tuners ) goto open_failed;
- memset( p_sys->p_tuners, 0, sizeof( struct v4l2_tuner ) );
+ case IO_METHOD_READ:
+ free( p_sys->p_buffers[0].start );
+ break;
- for( i_device_index = 0; i_device_index < p_sys->i_tuner; i_device_index++ )
- {
- p_sys->p_tuners[i_device_index].index = i_device_index;
+ case IO_METHOD_MMAP:
+ for( i = 0; i < p_sys->i_nbuffers; ++i )
+ {
+ if( v4l2_munmap( p_sys->p_buffers[i].start, p_sys->p_buffers[i].length ) )
+ {
+ msg_Err( p_this, "munmap failed" );
+ }
+ }
+ break;
- if( ioctl( i_fd, VIDIOC_G_TUNER, &p_sys->p_tuners[i_device_index] ) )
+ case IO_METHOD_USERPTR:
+ for( i = 0; i < p_sys->i_nbuffers; ++i )
{
- msg_Err( p_demux, "cannot get tuner characteristics (%s)",
- strerror( errno ) );
- goto open_failed;
+ free( p_sys->p_buffers[i].start );
}
- msg_Dbg( p_demux, "Tuner %i (%s) has type: %s, "
- "frequency range: %.1f %s -> %.1f %s",
- i_device_index,
- p_sys->p_tuners[i_device_index].name,
- p_sys->p_tuners[i_device_index].type
- == V4L2_TUNER_RADIO ?
- "Radio" : "Analog TV",
- p_sys->p_tuners[i_device_index].rangelow * 62.5,
- p_sys->p_tuners[i_device_index].capability &
- V4L2_TUNER_CAP_LOW ?
- "Hz" : "kHz",
- p_sys->p_tuners[i_device_index].rangehigh * 62.5,
- p_sys->p_tuners[i_device_index].capability &
- V4L2_TUNER_CAP_LOW ?
- "Hz" : "kHz" );
+ break;
}
+ free( p_sys->p_buffers );
+ }
+
+ CommonClose( p_this, p_sys );
+}
+
+static void CommonClose( vlc_object_t *p_this, demux_sys_t *p_sys )
+{
+ (void)p_this;
+ /* Close */
+ if( p_sys->i_fd >= 0 ) v4l2_close( p_sys->i_fd );
+ free( p_sys->psz_device );
+ free( p_sys->p_standards );
+ free( p_sys->p_inputs );
+ free( p_sys->p_tuners );
+ free( p_sys->p_codecs );
+ free( p_sys->psz_requested_chroma );
+ free( p_sys->psz_set_ctrls );
+
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * AccessOpen: opens v4l2 device, access callback
+ *****************************************************************************
+ *
+ * url: <video device>::::
+ *
+ *****************************************************************************/
+static int AccessOpen( vlc_object_t * p_this )
+{
+ access_t *p_access = (access_t*) p_this;
+ demux_sys_t * p_sys;
+
+ /* Only when selected */
+ if( *p_access->psz_access == '\0' ) return VLC_EGENERIC;
+
+ access_InitFields( p_access );
+ ACCESS_SET_CALLBACKS( AccessRead, NULL, AccessControl, NULL );
+ p_sys = calloc( 1, sizeof( demux_sys_t ));
+ if( !p_sys ) return VLC_ENOMEM;
+ p_access->p_sys = (access_sys_t*)p_sys;
+
+ GetV4L2Params( p_sys, (vlc_object_t *) p_access );
+
+ ParseMRL( p_sys, p_access->psz_path, (vlc_object_t *) p_access );
+
+ if( FindMainDevice( p_this, p_sys, false ) != VLC_SUCCESS )
+ {
+ AccessClose( p_this );
+ return VLC_EGENERIC;
}
- if( i_fd >= 0 ) close( i_fd );
return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * DemuxControl:
+ *****************************************************************************/
+static int DemuxControl( demux_t *p_demux, int i_query, va_list args )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ bool *pb;
+ int64_t *pi64;
+
+ switch( i_query )
+ {
+ /* Special for access_demux */
+ case DEMUX_CAN_PAUSE:
+ case DEMUX_CAN_SEEK:
+ case DEMUX_SET_PAUSE_STATE:
+ case DEMUX_CAN_CONTROL_PACE:
+ pb = (bool*)va_arg( args, bool * );
+ *pb = false;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_PTS_DELAY:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+ *pi64 = (int64_t)p_sys->i_cache * 1000;
+ return VLC_SUCCESS;
+
+ case DEMUX_GET_TIME:
+ pi64 = (int64_t*)va_arg( args, int64_t * );
+ *pi64 = mdate();
+ return VLC_SUCCESS;
+
+ /* TODO implement others */
+ default:
+ return VLC_EGENERIC;
+ }
-open_failed:
-
- if( i_fd >= 0 ) close( i_fd );
return VLC_EGENERIC;
+}
+
+/*****************************************************************************
+ * AccessControl: access callback
+ *****************************************************************************/
+static int AccessControl( access_t *p_access, int i_query, va_list args )
+{
+ bool *pb_bool;
+ int64_t *pi_64;
+ demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
+
+ switch( i_query )
+ {
+ /* */
+ case ACCESS_CAN_SEEK:
+ case ACCESS_CAN_FASTSEEK:
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = false;
+ break;
+ case ACCESS_CAN_PAUSE:
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = false;
+ break;
+ case ACCESS_CAN_CONTROL_PACE:
+ pb_bool = (bool*)va_arg( args, bool* );
+ *pb_bool = false;
+ break;
+
+ /* */
+ case ACCESS_GET_PTS_DELAY:
+ pi_64 = (int64_t*)va_arg( args, int64_t * );
+ *pi_64 = (int64_t) p_sys->i_cache * 1000;
+ break;
+
+ /* */
+ case ACCESS_SET_PAUSE_STATE:
+ /* Nothing to do */
+ break;
+
+ case ACCESS_GET_TITLE_INFO:
+ case ACCESS_SET_TITLE:
+ case ACCESS_SET_SEEKPOINT:
+ case ACCESS_SET_PRIVATE_ID_STATE:
+ case ACCESS_GET_CONTENT_TYPE:
+ case ACCESS_GET_META:
+ return VLC_EGENERIC;
+
+ default:
+ msg_Warn( p_access, "Unimplemented query in control(%d).", i_query);
+ return VLC_EGENERIC;
+ }
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * AccessRead: access callback
+ ******************************************************************************/
+static ssize_t AccessRead( access_t * p_access, uint8_t * p_buffer, size_t i_len )
+{
+ demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
+ struct pollfd ufd;
+ int i_ret;
+
+ ufd.fd = p_sys->i_fd;
+ ufd.events = POLLIN;
+
+ if( p_access->info.b_eof )
+ return 0;
+
+ do
+ {
+ if( !vlc_object_alive (p_access) )
+ return 0;
+
+ ufd.revents = 0;
+ }
+ while( ( i_ret = poll( &ufd, 1, 500 ) ) == 0 );
+
+ if( i_ret < 0 )
+ {
+ msg_Err( p_access, "Polling error (%m)." );
+ return -1;
+ }
+
+ i_ret = v4l2_read( p_sys->i_fd, p_buffer, i_len );
+ if( i_ret == 0 )
+ {
+ p_access->info.b_eof = true;
+ }
+ else if( i_ret > 0 )
+ {
+ p_access->info.i_pos += i_ret;
+ }
+
+ return i_ret;
+}
+
+/*****************************************************************************
+ * Demux: Processes the audio or video frame
+ *****************************************************************************/
+static int Demux( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ struct pollfd fd;
+ fd.fd = p_sys->i_fd;
+ fd.events = POLLIN|POLLPRI;
+ fd.revents = 0;
+
+ /* Wait for data */
+ if( poll( &fd, 1, 500 ) ) /* Timeout after 0.5 seconds since I don't know if pf_demux can be blocking. */
+ {
+ if( fd.revents & (POLLIN|POLLPRI) )
+ {
+ block_t *p_block = GrabVideo( p_demux );
+ if( p_block )
+ {
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
+ es_out_Send( p_demux->out, p_sys->p_es, p_block );
+ }
+ }
+ }
+
+ return 1;
+}
+
+/*****************************************************************************
+ * GrabVideo: Grab a video frame
+ *****************************************************************************/
+static block_t* GrabVideo( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ block_t *p_block = NULL;
+ struct v4l2_buffer buf;
+ ssize_t i_ret;
+
+ if( p_sys->f_fps >= 0.1 && p_sys->i_video_pts > 0 )
+ {
+ mtime_t i_dur = (mtime_t)((double)1000000 / (double)p_sys->f_fps);
+
+ /* Did we wait long enough ? (frame rate reduction) */
+ if( p_sys->i_video_pts + i_dur > mdate() ) return 0;
+ }
+
+ /* Grab Video Frame */
+ switch( p_sys->io )
+ {
+ case IO_METHOD_READ:
+ i_ret = v4l2_read( p_sys->i_fd, p_sys->p_buffers[0].start, p_sys->p_buffers[0].length );
+ if( i_ret == -1 )
+ {
+ switch( errno )
+ {
+ case EAGAIN:
+ return 0;
+ case EIO:
+ /* Could ignore EIO, see spec. */
+ /* fall through */
+ default:
+ msg_Err( p_demux, "Failed to read frame" );
+ return 0;
+ }
+ }
+
+ p_block = ProcessVideoFrame( p_demux, (uint8_t*)p_sys->p_buffers[0].start, i_ret );
+ if( !p_block ) return 0;
+
+ break;
+
+ case IO_METHOD_MMAP:
+ memset( &buf, 0, sizeof(buf) );
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_MMAP;
+
+ /* Wait for next frame */
+ if (v4l2_ioctl( p_sys->i_fd, VIDIOC_DQBUF, &buf ) < 0 )
+ {
+ switch( errno )
+ {
+ case EAGAIN:
+ return 0;
+ case EIO:
+ /* Could ignore EIO, see spec. */
+ /* fall through */
+ default:
+ msg_Err( p_demux, "Failed to wait (VIDIOC_DQBUF)" );
+ return 0;
+ }
+ }
+
+ if( buf.index >= p_sys->i_nbuffers ) {
+ msg_Err( p_demux, "Failed capturing new frame as i>=nbuffers" );
+ return 0;
+ }
+
+ p_block = ProcessVideoFrame( p_demux, p_sys->p_buffers[buf.index].start, buf.bytesused );
+ if( !p_block ) return 0;
+
+ /* Unlock */
+ if( v4l2_ioctl( p_sys->i_fd, VIDIOC_QBUF, &buf ) < 0 )
+ {
+ msg_Err( p_demux, "Failed to unlock (VIDIOC_QBUF)" );
+ block_Release( p_block );
+ return 0;
+ }
+
+ break;
+
+ case IO_METHOD_USERPTR:
+ memset( &buf, 0, sizeof(buf) );
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_USERPTR;
+
+ /* Wait for next frame */
+ if (v4l2_ioctl( p_sys->i_fd, VIDIOC_DQBUF, &buf ) < 0 )
+ {
+ switch( errno )
+ {
+ case EAGAIN:
+ return 0;
+ case EIO:
+ /* Could ignore EIO, see spec. */
+ /* fall through */
+ default:
+ msg_Err( p_demux, "Failed to wait (VIDIOC_DQBUF)" );
+ return 0;
+ }
+ }
+
+ /* Find frame? */
+ unsigned int i;
+ for( i = 0; i < p_sys->i_nbuffers; i++ )
+ {
+ if( buf.m.userptr == (unsigned long)p_sys->p_buffers[i].start &&
+ buf.length == p_sys->p_buffers[i].length ) break;
+ }
+
+ if( i >= p_sys->i_nbuffers )
+ {
+ msg_Err( p_demux, "Failed capturing new frame as i>=nbuffers" );
+ return 0;
+ }
+
+ p_block = ProcessVideoFrame( p_demux, (uint8_t*)buf.m.userptr, buf.bytesused );
+ if( !p_block ) return 0;
+
+ /* Unlock */
+ if( v4l2_ioctl( p_sys->i_fd, VIDIOC_QBUF, &buf ) < 0 )
+ {
+ msg_Err( p_demux, "Failed to unlock (VIDIOC_QBUF)" );
+ block_Release( p_block );
+ return 0;
+ }
+
+ break;
+
+ }
+
+ /* Timestamp */
+ p_sys->i_video_pts = p_block->i_pts = p_block->i_dts = mdate();
+
+ return p_block;
+}
+
+/*****************************************************************************
+ * ProcessVideoFrame: Helper function to take a buffer and copy it into
+ * a new block
+ *****************************************************************************/
+static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t i_size )
+{
+ block_t *p_block;
+
+ if( !p_frame ) return 0;
+
+ /* New block */
+ if( !( p_block = block_New( p_demux, i_size ) ) )
+ {
+ msg_Warn( p_demux, "Cannot get new block" );
+ return 0;
+ }
+
+ /* Copy frame */
+ memcpy( p_block->p_buffer, p_frame, i_size );
+
+ return p_block;
+}
+
+/*****************************************************************************
+ * Helper function to initalise video IO using the Read method
+ *****************************************************************************/
+static int InitRead( demux_t *p_demux, unsigned int i_buffer_size )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ p_sys->p_buffers = calloc( 1, sizeof( *p_sys->p_buffers ) );
+ if( !p_sys->p_buffers )
+ return VLC_EGENERIC;
+
+ p_sys->p_buffers[0].length = i_buffer_size;
+ p_sys->p_buffers[0].start = malloc( i_buffer_size );
+ if( !p_sys->p_buffers[0].start )
+ return VLC_ENOMEM;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Helper function to initalise video IO using the mmap method
+ *****************************************************************************/
+static int InitMmap( demux_t *p_demux, int i_fd )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ struct v4l2_requestbuffers req;
+
+ memset( &req, 0, sizeof(req) );
+ req.count = 4;
+ req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ req.memory = V4L2_MEMORY_MMAP;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_REQBUFS, &req ) < 0 )
+ {
+ msg_Err( p_demux, "device does not support mmap i/o" );
+ goto open_failed;
+ }
+
+ if( req.count < 2 )
+ {
+ msg_Err( p_demux, "Insufficient buffer memory" );
+ goto open_failed;
+ }
+
+ p_sys->p_buffers = calloc( req.count, sizeof( *p_sys->p_buffers ) );
+ if( !p_sys->p_buffers )
+ goto open_failed;
+
+ for( p_sys->i_nbuffers = 0; p_sys->i_nbuffers < req.count; ++p_sys->i_nbuffers )
+ {
+ struct v4l2_buffer buf;
+
+ memset( &buf, 0, sizeof(buf) );
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_MMAP;
+ buf.index = p_sys->i_nbuffers;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYBUF, &buf ) < 0 )
+ {
+ msg_Err( p_demux, "VIDIOC_QUERYBUF" );
+ goto open_failed;
+ }
+
+ p_sys->p_buffers[p_sys->i_nbuffers].length = buf.length;
+ p_sys->p_buffers[p_sys->i_nbuffers].start =
+ v4l2_mmap( NULL, buf.length, PROT_READ | PROT_WRITE, MAP_SHARED, i_fd, buf.m.offset );
+
+ if( p_sys->p_buffers[p_sys->i_nbuffers].start == MAP_FAILED )
+ {
+ msg_Err( p_demux, "mmap failed (%m)" );
+ goto open_failed;
+ }
+ }
+
+ return VLC_SUCCESS;
+
+open_failed:
+ return VLC_EGENERIC;
+
+}
+
+/*****************************************************************************
+ * Helper function to initalise video IO using the userbuf method
+ *****************************************************************************/
+static int InitUserP( demux_t *p_demux, int i_fd, unsigned int i_buffer_size )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ struct v4l2_requestbuffers req;
+ unsigned int i_page_size;
+
+ i_page_size = sysconf(_SC_PAGESIZE);
+ i_buffer_size = ( i_buffer_size + i_page_size - 1 ) & ~( i_page_size - 1);
+
+ memset( &req, 0, sizeof(req) );
+ req.count = 4;
+ req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ req.memory = V4L2_MEMORY_USERPTR;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_REQBUFS, &req ) < 0 )
+ {
+ msg_Err( p_demux, "device does not support user pointer i/o" );
+ return VLC_EGENERIC;
+ }
+
+ p_sys->p_buffers = calloc( 4, sizeof( *p_sys->p_buffers ) );
+ if( !p_sys->p_buffers )
+ goto open_failed;
+
+ for( p_sys->i_nbuffers = 0; p_sys->i_nbuffers < 4; ++p_sys->i_nbuffers )
+ {
+ p_sys->p_buffers[p_sys->i_nbuffers].length = i_buffer_size;
+ if( posix_memalign( &p_sys->p_buffers[p_sys->i_nbuffers].start,
+ /* boundary */ i_page_size, i_buffer_size ) )
+ goto open_failed;
+ }
+
+ return VLC_SUCCESS;
+
+open_failed:
+ free( p_sys->p_buffers );
+ return VLC_EGENERIC;
+
+}
+
+/*****************************************************************************
+ * IsPixelFormatSupported: returns true if the specified V4L2 pixel format is
+ * in the array of supported formats returned by the driver
+ *****************************************************************************/
+static bool IsPixelFormatSupported( demux_t *p_demux, unsigned int i_pixelformat )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ for( int i_index = 0; i_index < p_sys->i_codec; i_index++ )
+ {
+ if( p_sys->p_codecs[i_index].pixelformat == i_pixelformat )
+ return true;
+ }
+
+ return false;
+}
+
+static float GetMaxFrameRate( demux_t *p_demux, int i_fd,
+ uint32_t i_pixel_format,
+ uint32_t i_width, uint32_t i_height )
+{
+ (void)p_demux;
+#ifdef VIDIOC_ENUM_FRAMEINTERVALS
+ /* This is new in Linux 2.6.19 */
+ struct v4l2_frmivalenum frmival;
+ frmival.index = 0;
+ frmival.pixel_format = i_pixel_format;
+ frmival.width = i_width;
+ frmival.height = i_height;
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 )
+ {
+ switch( frmival.type )
+ {
+ case V4L2_FRMIVAL_TYPE_DISCRETE:
+ {
+ float f_fps_max = -1;
+ do
+ {
+ float f_fps = (float)frmival.discrete.denominator
+ / (float)frmival.discrete.numerator;
+ if( f_fps > f_fps_max ) f_fps_max = f_fps;
+ frmival.index++;
+ } while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS,
+ &frmival ) >= 0 );
+ return f_fps_max;
+ }
+ case V4L2_FRMSIZE_TYPE_STEPWISE:
+ case V4L2_FRMIVAL_TYPE_CONTINUOUS:
+ return __MAX( (float)frmival.stepwise.max.denominator
+ / (float)frmival.stepwise.max.numerator,
+ (float)frmival.stepwise.min.denominator
+ / (float)frmival.stepwise.min.numerator );
+ }
+ }
+#endif
+ return -1.;
+}
+
+static float GetAbsoluteMaxFrameRate( demux_t *p_demux, int i_fd,
+ uint32_t i_pixel_format )
+{
+ float f_fps_max = -1.;
+#ifdef VIDIOC_ENUM_FRAMESIZES
+ /* This is new in Linux 2.6.19 */
+ struct v4l2_frmsizeenum frmsize;
+ frmsize.index = 0;
+ frmsize.pixel_format = i_pixel_format;
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) >= 0 )
+ {
+ switch( frmsize.type )
+ {
+ case V4L2_FRMSIZE_TYPE_DISCRETE:
+ do
+ {
+ frmsize.index++;
+ float f_fps = GetMaxFrameRate( p_demux, i_fd,
+ i_pixel_format,
+ frmsize.discrete.width,
+ frmsize.discrete.height );
+ if( f_fps > f_fps_max ) f_fps_max = f_fps;
+ } while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES,
+ &frmsize ) >= 0 );
+ break;
+ case V4L2_FRMSIZE_TYPE_STEPWISE:
+ {
+ uint32_t i_width = frmsize.stepwise.min_width;
+ uint32_t i_height = frmsize.stepwise.min_height;
+ for( ;
+ i_width <= frmsize.stepwise.max_width &&
+ i_height <= frmsize.stepwise.max_width;
+ i_width += frmsize.stepwise.step_width,
+ i_height += frmsize.stepwise.step_height )
+ {
+ float f_fps = GetMaxFrameRate( p_demux, i_fd,
+ i_pixel_format,
+ i_width, i_height );
+ if( f_fps > f_fps_max ) f_fps_max = f_fps;
+ }
+ break;
+ }
+ case V4L2_FRMSIZE_TYPE_CONTINUOUS:
+ /* FIXME */
+ msg_Err( p_demux, "GetAbsoluteMaxFrameRate implementation for V4L2_FRMSIZE_TYPE_CONTINUOUS isn't correct" );
+ f_fps_max = GetMaxFrameRate( p_demux, i_fd,
+ i_pixel_format,
+ frmsize.stepwise.max_width,
+ frmsize.stepwise.max_height );
+ break;
+ }
+ }
+#endif
+ return f_fps_max;
+}
+
+static void GetMaxDimensions( demux_t *p_demux, int i_fd,
+ uint32_t i_pixel_format, float f_fps_min,
+ uint32_t *pi_width, uint32_t *pi_height )
+{
+ *pi_width = 0;
+ *pi_height = 0;
+#ifdef VIDIOC_ENUM_FRAMESIZES
+ /* This is new in Linux 2.6.19 */
+ struct v4l2_frmsizeenum frmsize;
+ frmsize.index = 0;
+ frmsize.pixel_format = i_pixel_format;
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) >= 0 )
+ {
+ switch( frmsize.type )
+ {
+ case V4L2_FRMSIZE_TYPE_DISCRETE:
+ do
+ {
+ frmsize.index++;
+ float f_fps = GetMaxFrameRate( p_demux, i_fd,
+ i_pixel_format,
+ frmsize.discrete.width,
+ frmsize.discrete.height );
+ if( f_fps >= f_fps_min &&
+ frmsize.discrete.width > *pi_width )
+ {
+ *pi_width = frmsize.discrete.width;
+ *pi_height = frmsize.discrete.height;
+ }
+ } while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES,
+ &frmsize ) >= 0 );
+ break;
+ case V4L2_FRMSIZE_TYPE_STEPWISE:
+ {
+ uint32_t i_width = frmsize.stepwise.min_width;
+ uint32_t i_height = frmsize.stepwise.min_height;
+ for( ;
+ i_width <= frmsize.stepwise.max_width &&
+ i_height <= frmsize.stepwise.max_width;
+ i_width += frmsize.stepwise.step_width,
+ i_height += frmsize.stepwise.step_height )
+ {
+ float f_fps = GetMaxFrameRate( p_demux, i_fd,
+ i_pixel_format,
+ i_width, i_height );
+ if( f_fps >= f_fps_min && i_width > *pi_width )
+ {
+ *pi_width = i_width;
+ *pi_height = i_height;
+ }
+ }
+ break;
+ }
+ case V4L2_FRMSIZE_TYPE_CONTINUOUS:
+ /* FIXME */
+ msg_Err( p_demux, "GetMaxDimension implementation for V4L2_FRMSIZE_TYPE_CONTINUOUS isn't correct" );
+ float f_fps = GetMaxFrameRate( p_demux, i_fd,
+ i_pixel_format,
+ frmsize.stepwise.max_width,
+ frmsize.stepwise.max_height );
+ if( f_fps >= f_fps_min &&
+ frmsize.stepwise.max_width > *pi_width )
+ {
+ *pi_width = frmsize.stepwise.max_width;
+ *pi_height = frmsize.stepwise.max_height;
+ }
+ break;
+ }
+ }
+#endif
+}
+
+/*****************************************************************************
+ * OpenVideoDev: open and set up the video device and probe for capabilities
+ *****************************************************************************/
+static int OpenVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys, bool b_demux )
+{
+ int i_fd;
+ struct v4l2_cropcap cropcap;
+ struct v4l2_crop crop;
+ struct v4l2_format fmt;
+ unsigned int i_min;
+ enum v4l2_buf_type buf_type;
+ const char *psz_device = p_sys->psz_device;
+ es_format_t es_fmt;
+ int libv4l2_fd;
+
+ if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
+ {
+ msg_Err( p_obj, "cannot open device (%m)" );
+ goto open_failed;
+ }
+
+#ifdef HAVE_LIBV4L2
+ /* Note the v4l2_xxx functions are designed so that if they get passed an
+ unknown fd, the will behave exactly as their regular xxx counterparts,
+ so if v4l2_fd_open fails, we continue as normal (missing the libv4l2
+ custom cam format to normal formats conversion). Chances are big we will
+ still fail then though, as normally v4l2_fd_open only fails if the
+ device is not a v4l2 device. */
+ libv4l2_fd = v4l2_fd_open( i_fd, V4L2_ENABLE_ENUM_FMT_EMULATION );
+ if( libv4l2_fd != -1 )
+ i_fd = libv4l2_fd;
+#else
+ libv4l2_fd = i_fd;
+#endif
+
+ /* Tune the tuner */
+ if( p_sys->i_frequency >= 0 )
+ {
+ if( p_sys->i_cur_tuner < 0 || p_sys->i_cur_tuner >= p_sys->i_tuner )
+ {
+ msg_Err( p_obj, "invalid tuner %d.", p_sys->i_cur_tuner );
+ goto open_failed;
+ }
+ struct v4l2_frequency frequency;
+ memset( &frequency, 0, sizeof( frequency ) );
+ frequency.tuner = p_sys->i_cur_tuner;
+ frequency.type = p_sys->p_tuners[p_sys->i_cur_tuner].type;
+ frequency.frequency = p_sys->i_frequency / 62.5;
+ if( v4l2_ioctl( i_fd, VIDIOC_S_FREQUENCY, &frequency ) < 0 )
+ {
+ msg_Err( p_obj, "cannot set tuner frequency (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "Tuner frequency set" );
+ }
+
+ /* Set the tuner's audio mode */
+ if( p_sys->i_audio_mode >= 0 )
+ {
+ if( p_sys->i_cur_tuner < 0 || p_sys->i_cur_tuner >= p_sys->i_tuner )
+ {
+ msg_Err( p_obj, "invalid tuner %d.", p_sys->i_cur_tuner );
+ goto open_failed;
+ }
+ struct v4l2_tuner tuner;
+ memset( &tuner, 0, sizeof( tuner ) );
+ tuner.index = p_sys->i_cur_tuner;
+ tuner.audmode = p_sys->i_audio_mode;
+ if( v4l2_ioctl( i_fd, VIDIOC_S_TUNER, &tuner ) < 0 )
+ {
+ msg_Err( p_obj, "cannot set tuner audio mode (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "Tuner audio mode set" );
+ }
+
+ /* Select standard */
+
+ if( p_sys->i_selected_standard_id != V4L2_STD_UNKNOWN )
+ {
+ if( v4l2_ioctl( i_fd, VIDIOC_S_STD, &p_sys->i_selected_standard_id ) < 0 )
+ {
+ msg_Err( p_obj, "cannot set standard (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "Set standard" );
+ }
+
+ /* Select input */
+
+ if( p_sys->i_selected_input >= p_sys->i_input )
+ {
+ msg_Warn( p_obj, "invalid input. Using the default one" );
+ p_sys->i_selected_input = 0;
+ }
+
+ if( v4l2_ioctl( i_fd, VIDIOC_S_INPUT, &p_sys->i_selected_input ) < 0 )
+ {
+ msg_Err( p_obj, "cannot set input (%m)" );
+ goto open_failed;
+ }
+
+ /* Set audio input */
+
+ if( p_sys->i_audio > 0 )
+ {
+ if( p_sys->i_selected_audio_input < 0
+ || p_sys->i_selected_audio_input >= p_sys->i_audio )
+ {
+ msg_Warn( p_obj, "invalid audio input. Using the default one" );
+ p_sys->i_selected_audio_input = 0;
+ }
+
+ if( v4l2_ioctl( i_fd, VIDIOC_S_AUDIO, &p_sys->p_audios[p_sys->i_selected_audio_input] ) < 0 )
+ {
+ msg_Err( p_obj, "cannot set audio input (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "Audio input set to %d", p_sys->i_selected_audio_input );
+ }
+
+
+ /* TODO: Move the resolution stuff up here */
+ /* if MPEG encoder card, no need to do anything else after this */
+ ControlList( p_obj, i_fd,
+ var_GetBool( p_obj, "v4l2-controls-reset" ), b_demux );
+ SetAvailControlsByString( p_obj, p_sys, i_fd );
+ if( false == b_demux)
+ {
+ return i_fd;
+ }
+
+ demux_t *p_demux = (demux_t *) p_obj;
+
+ /* Verify device support for the various IO methods */
+ switch( p_sys->io )
+ {
+ case IO_METHOD_READ:
+ if( !(p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE) )
+ {
+ msg_Err( p_demux, "device does not support read i/o" );
+ goto open_failed;
+ }
+ break;
+
+ case IO_METHOD_MMAP:
+ case IO_METHOD_USERPTR:
+ if( !(p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING) )
+ {
+ msg_Err( p_demux, "device does not support streaming i/o" );
+ goto open_failed;
+ }
+ break;
+
+ default:
+ msg_Err( p_demux, "io method not supported" );
+ goto open_failed;
+ }
+
+ /* Reset Cropping */
+ memset( &cropcap, 0, sizeof(cropcap) );
+ cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ if( v4l2_ioctl( i_fd, VIDIOC_CROPCAP, &cropcap ) >= 0 )
+ {
+ crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ crop.c = cropcap.defrect; /* reset to default */
+ if( v4l2_ioctl( i_fd, VIDIOC_S_CROP, &crop ) < 0 )
+ {
+ switch( errno )
+ {
+ case EINVAL:
+ /* Cropping not supported. */
+ break;
+ default:
+ /* Errors ignored. */
+ break;
+ }
+ }
+ }
+
+ /* Try and find default resolution if not specified */
+ memset( &fmt, 0, sizeof(fmt) );
+ fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ if( p_sys->i_width == 0 || p_sys->i_height == 0 )
+ {
+ /* Use current width and height settings */
+ if( v4l2_ioctl( i_fd, VIDIOC_G_FMT, &fmt ) < 0 )
+ {
+ msg_Err( p_demux, "Cannot get default width and height." );
+ goto open_failed;
+ }
+
+ p_sys->i_width = fmt.fmt.pix.width;
+ p_sys->i_height = fmt.fmt.pix.height;
+
+ if( fmt.fmt.pix.field == V4L2_FIELD_ALTERNATE )
+ {
+ p_sys->i_height = p_sys->i_height * 2;
+ }
+ }
+ else if( p_sys->i_width < 0 || p_sys->i_height < 0 )
+ {
+ msg_Dbg( p_demux, "will try to find optimal width and height." );
+ }
+ else
+ {
+ /* Use user specified width and height */
+ msg_Dbg( p_demux, "trying specified size %dx%d", p_sys->i_width, p_sys->i_height );
+ }
+
+ fmt.fmt.pix.width = p_sys->i_width;
+ fmt.fmt.pix.height = p_sys->i_height;
+ fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
+
+ /* Test and set Chroma */
+ fmt.fmt.pix.pixelformat = 0;
+ if( p_sys->psz_requested_chroma && strlen( p_sys->psz_requested_chroma ) > 0 )
+ {
+ /* User specified chroma */
+ if( strlen( p_sys->psz_requested_chroma ) >= 4 )
+ {
+ int i_requested_fourcc = VLC_FOURCC(
+ p_sys->psz_requested_chroma[0], p_sys->psz_requested_chroma[1],
+ p_sys->psz_requested_chroma[2], p_sys->psz_requested_chroma[3] );
+ for( int i = 0; v4l2chroma_to_fourcc[i].i_v4l2 != 0; i++ )
+ {
+ if( v4l2chroma_to_fourcc[i].i_fourcc == i_requested_fourcc )
+ {
+ fmt.fmt.pix.pixelformat = v4l2chroma_to_fourcc[i].i_v4l2;
+ break;
+ }
+ }
+ }
+ /* Try and set user chroma */
+ if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ( fmt.fmt.pix.pixelformat && v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) )
+ {
+ msg_Warn( p_demux, "Driver is unable to use specified chroma %s. Trying defaults.", p_sys->psz_requested_chroma );
+ fmt.fmt.pix.pixelformat = 0;
+ }
+ }
+
+ /* If no user specified chroma, find best */
+ /* This also decides if MPEG encoder card or not */
+ if( !fmt.fmt.pix.pixelformat )
+ {
+ unsigned int i;
+ for( i = 0; i < ARRAY_SIZE( p_chroma_fallbacks ); i++ )
+ {
+ fmt.fmt.pix.pixelformat = p_chroma_fallbacks[i];
+ if( IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat )
+ && v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) >= 0 )
+ break;
+ }
+ if( i == ARRAY_SIZE( p_chroma_fallbacks ) )
+ {
+ msg_Warn( p_demux, "Could not select any of the default chromas; attempting to open as MPEG encoder card (access)" );
+ goto open_failed;
+ }
+ }
+
+ if( p_sys->i_width < 0 || p_sys->i_height < 0 )
+ {
+ if( p_sys->f_fps <= 0 )
+ {
+ p_sys->f_fps = GetAbsoluteMaxFrameRate( p_demux, i_fd,
+ fmt.fmt.pix.pixelformat );
+ msg_Dbg( p_demux, "Found maximum framerate of %f", p_sys->f_fps );
+ }
+ GetMaxDimensions( p_demux, i_fd,
+ fmt.fmt.pix.pixelformat, p_sys->f_fps,
+ &fmt.fmt.pix.width, &fmt.fmt.pix.height );
+ msg_Dbg( p_demux, "Found optimal dimensions for framerate %f of %dx%d",
+ p_sys->f_fps, fmt.fmt.pix.width, fmt.fmt.pix.height );
+ if( v4l2_ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 ) {;}
+ }
+
+ /* Reassign width, height and chroma incase driver override */
+ p_sys->i_width = fmt.fmt.pix.width;
+ p_sys->i_height = fmt.fmt.pix.height;
+
+ /* Look up final fourcc */
+ p_sys->i_fourcc = 0;
+ for( int i = 0; v4l2chroma_to_fourcc[i].i_fourcc != 0; i++ )
+ {
+ if( v4l2chroma_to_fourcc[i].i_v4l2 == fmt.fmt.pix.pixelformat )
+ {
+ p_sys->i_fourcc = v4l2chroma_to_fourcc[i].i_fourcc;
+ es_format_Init( &es_fmt, VIDEO_ES, p_sys->i_fourcc );
+ es_fmt.video.i_rmask = v4l2chroma_to_fourcc[i].i_rmask;
+ es_fmt.video.i_gmask = v4l2chroma_to_fourcc[i].i_gmask;
+ es_fmt.video.i_bmask = v4l2chroma_to_fourcc[i].i_bmask;
+ break;
+ }
+ }
+
+ /* Buggy driver paranoia */
+ i_min = fmt.fmt.pix.width * 2;
+ if( fmt.fmt.pix.bytesperline < i_min )
+ fmt.fmt.pix.bytesperline = i_min;
+ i_min = fmt.fmt.pix.bytesperline * fmt.fmt.pix.height;
+ if( fmt.fmt.pix.sizeimage < i_min )
+ fmt.fmt.pix.sizeimage = i_min;
+
+#ifdef VIDIOC_ENUM_FRAMEINTERVALS
+ /* This is new in Linux 2.6.19 */
+ /* List supported frame rates */
+ struct v4l2_frmivalenum frmival;
+ frmival.index = 0;
+ frmival.pixel_format = fmt.fmt.pix.pixelformat;
+ frmival.width = p_sys->i_width;
+ frmival.height = p_sys->i_height;
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 )
+ {
+ char psz_fourcc[5];
+ memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
+ vlc_fourcc_to_char( p_sys->i_fourcc, &psz_fourcc );
+ msg_Dbg( p_demux, "supported frame intervals for %4s, %dx%d:",
+ psz_fourcc, frmival.width, frmival.height );
+ switch( frmival.type )
+ {
+ case V4L2_FRMIVAL_TYPE_DISCRETE:
+ do
+ {
+ msg_Dbg( p_demux, " supported frame interval: %d/%d",
+ frmival.discrete.numerator,
+ frmival.discrete.denominator );
+ frmival.index++;
+ } while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 );
+ break;
+ case V4L2_FRMIVAL_TYPE_STEPWISE:
+ msg_Dbg( p_demux, " supported frame intervals: %d/%d to "
+ "%d/%d using %d/%d increments",
+ frmival.stepwise.min.numerator,
+ frmival.stepwise.min.denominator,
+ frmival.stepwise.max.numerator,
+ frmival.stepwise.max.denominator,
+ frmival.stepwise.step.numerator,
+ frmival.stepwise.step.denominator );
+ break;
+ case V4L2_FRMIVAL_TYPE_CONTINUOUS:
+ msg_Dbg( p_demux, " supported frame intervals: %d/%d to %d/%d",
+ frmival.stepwise.min.numerator,
+ frmival.stepwise.min.denominator,
+ frmival.stepwise.max.numerator,
+ frmival.stepwise.max.denominator );
+ break;
+ }
+ }
+#endif
+
+
+ /* Init IO method */
+ switch( p_sys->io )
+ {
+ case IO_METHOD_READ:
+ if( InitRead( p_demux, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
+ break;
+
+ case IO_METHOD_MMAP:
+ if( InitMmap( p_demux, i_fd ) != VLC_SUCCESS ) goto open_failed;
+ break;
+
+ case IO_METHOD_USERPTR:
+ if( InitUserP( p_demux, i_fd, fmt.fmt.pix.sizeimage ) != VLC_SUCCESS ) goto open_failed;
+ break;
+
+ }
+
+ /* Add */
+ es_fmt.video.i_width = p_sys->i_width;
+ es_fmt.video.i_height = p_sys->i_height;
+ es_fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
+
+ msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
+ (char*)&es_fmt.i_codec, es_fmt.video.i_width, es_fmt.video.i_height );
+ p_sys->p_es = es_out_Add( p_demux->out, &es_fmt );
+
+ /* Start Capture */
+
+ switch( p_sys->io )
+ {
+ case IO_METHOD_READ:
+ /* Nothing to do */
+ break;
+
+ case IO_METHOD_MMAP:
+ for (unsigned int i = 0; i < p_sys->i_nbuffers; ++i)
+ {
+ struct v4l2_buffer buf;
+
+ memset( &buf, 0, sizeof(buf) );
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_MMAP;
+ buf.index = i;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_QBUF, &buf ) < 0 )
+ {
+ msg_Err( p_demux, "VIDIOC_QBUF failed" );
+ goto open_failed;
+ }
+ }
+
+ buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ if( v4l2_ioctl( i_fd, VIDIOC_STREAMON, &buf_type ) < 0 )
+ {
+ msg_Err( p_demux, "VIDIOC_STREAMON failed" );
+ goto open_failed;
+ }
+
+ break;
+
+ case IO_METHOD_USERPTR:
+ for( unsigned int i = 0; i < p_sys->i_nbuffers; ++i )
+ {
+ struct v4l2_buffer buf;
+
+ memset( &buf, 0, sizeof(buf) );
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_USERPTR;
+ buf.index = i;
+ buf.m.userptr = (unsigned long)p_sys->p_buffers[i].start;
+ buf.length = p_sys->p_buffers[i].length;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_QBUF, &buf ) < 0 )
+ {
+ msg_Err( p_demux, "VIDIOC_QBUF failed" );
+ goto open_failed;
+ }
+ }
+
+ buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ if( v4l2_ioctl( i_fd, VIDIOC_STREAMON, &buf_type ) < 0 )
+ {
+ msg_Err( p_demux, "VIDIOC_STREAMON failed" );
+ goto open_failed;
+ }
+
+ break;
+ }
+
+ /* report fps */
+ if( p_sys->f_fps >= 0.1 )
+ {
+ msg_Dbg( p_demux, "User set fps=%f", p_sys->f_fps );
+ }
+
+ return i_fd;
+
+open_failed:
+ if( i_fd >= 0 ) v4l2_close( i_fd );
+ return -1;
+
+}
+
+/*****************************************************************************
+ * ProbeVideoDev: probe video for capabilities
+ *****************************************************************************/
+static bool ProbeVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys,
+ const char *psz_device )
+{
+ int i_index;
+ int i_standard;
+
+ int i_fd;
+ int libv4l2_fd;
+
+ if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
+ {
+ msg_Err( p_obj, "cannot open video device '%s' (%m)", psz_device );
+ goto open_failed;
+ }
+
+#ifdef HAVE_LIBV4L2
+ /* Note the v4l2_xxx functions are designed so that if they get passed an
+ unknown fd, the will behave exactly as their regular xxx counterparts,
+ so if v4l2_fd_open fails, we continue as normal (missing the libv4l2
+ custom cam format to normal formats conversion). Chances are big we will
+ still fail then though, as normally v4l2_fd_open only fails if the
+ device is not a v4l2 device. */
+ libv4l2_fd = v4l2_fd_open( i_fd, V4L2_ENABLE_ENUM_FMT_EMULATION );
+ if( libv4l2_fd != -1 )
+ i_fd = libv4l2_fd;
+#else
+ libv4l2_fd = i_fd;
+#endif
+
+ /* Get device capabilites */
+
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCAP, &p_sys->dev_cap ) < 0 )
+ {
+ msg_Err( p_obj, "cannot get video capabilities (%m)" );
+ goto open_failed;
+ }
+
+ msg_Dbg( p_obj, "V4L2 device: %s using driver: %s (version: %u.%u.%u) on %s",
+ p_sys->dev_cap.card,
+ p_sys->dev_cap.driver,
+ (p_sys->dev_cap.version >> 16) & 0xFF,
+ (p_sys->dev_cap.version >> 8) & 0xFF,
+ p_sys->dev_cap.version & 0xFF,
+ p_sys->dev_cap.bus_info );
+
+ msg_Dbg( p_obj, "the device has the capabilities: (%c) Video Capure, "
+ "(%c) Audio, "
+ "(%c) Tuner",
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE ? 'X':' '),
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO ? 'X':' '),
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER ? 'X':' ') );
+
+ msg_Dbg( p_obj, "supported I/O methods are: (%c) Read/Write, "
+ "(%c) Streaming, "
+ "(%c) Asynchronous",
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_READWRITE ? 'X':' ' ),
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_STREAMING ? 'X':' ' ),
+ ( p_sys->dev_cap.capabilities & V4L2_CAP_ASYNCIO ? 'X':' ' ) );
+
+ /* Now, enumerate all the video inputs. This is useless at the moment
+ since we have no way to present that info to the user except with
+ debug messages */
+
+ if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
+ {
+ struct v4l2_input t_input;
+ t_input.index = 0;
+ while( v4l2_ioctl( i_fd, VIDIOC_ENUMINPUT, &t_input ) >= 0 )
+ {
+ p_sys->i_input++;
+ t_input.index = p_sys->i_input;
+ }
+
+ p_sys->p_inputs = calloc( 1, p_sys->i_input * sizeof( struct v4l2_input ) );
+ if( !p_sys->p_inputs ) goto open_failed;
+
+ for( i_index = 0; i_index < p_sys->i_input; i_index++ )
+ {
+ p_sys->p_inputs[i_index].index = i_index;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUMINPUT, &p_sys->p_inputs[i_index] ) )
+ {
+ msg_Err( p_obj, "cannot get video input characteristics (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "video input %i (%s) has type: %s %c",
+ i_index,
+ p_sys->p_inputs[i_index].name,
+ p_sys->p_inputs[i_index].type
+ == V4L2_INPUT_TYPE_TUNER ?
+ "Tuner adapter" :
+ "External analog input",
+ i_index == p_sys->i_selected_input ? '*' : ' ' );
+ }
+ }
+
+ /* Probe video standards */
+ if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
+ {
+ struct v4l2_standard t_standards;
+ t_standards.index = 0;
+ while( v4l2_ioctl( i_fd, VIDIOC_ENUMSTD, &t_standards ) >=0 )
+ {
+ p_sys->i_standard++;
+ t_standards.index = p_sys->i_standard;
+ }
+
+ p_sys->p_standards = calloc( 1, p_sys->i_standard * sizeof( struct v4l2_standard ) );
+ if( !p_sys->p_standards ) goto open_failed;
+
+ for( i_standard = 0; i_standard < p_sys->i_standard; i_standard++ )
+ {
+ p_sys->p_standards[i_standard].index = i_standard;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUMSTD, &p_sys->p_standards[i_standard] ) )
+ {
+ msg_Err( p_obj, "cannot get video input standards (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "video standard %i is: %s %c",
+ i_standard,
+ p_sys->p_standards[i_standard].name,
+ (unsigned)i_standard == p_sys->i_selected_standard_id ? '*' : ' ' );
+ }
+ }
+
+ /* initialize the structures for the ioctls */
+ for( i_index = 0; i_index < 32; i_index++ )
+ {
+ p_sys->p_audios[i_index].index = i_index;
+ }
+
+ /* Probe audio inputs */
+ if( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO )
+ {
+ while( p_sys->i_audio < 32 &&
+ v4l2_ioctl( i_fd, VIDIOC_S_AUDIO, &p_sys->p_audios[p_sys->i_audio] ) >= 0 )
+ {
+ if( v4l2_ioctl( i_fd, VIDIOC_G_AUDIO, &p_sys->p_audios[ p_sys->i_audio] ) < 0 )
+ {
+ msg_Err( p_obj, "cannot get audio input characteristics (%m)" );
+ goto open_failed;
+ }
+
+ msg_Dbg( p_obj, "audio input %i (%s) is %s %s %c",
+ p_sys->i_audio,
+ p_sys->p_audios[p_sys->i_audio].name,
+ p_sys->p_audios[p_sys->i_audio].capability &
+ V4L2_AUDCAP_STEREO ?
+ "Stereo" : "Mono",
+ p_sys->p_audios[p_sys->i_audio].capability &
+ V4L2_AUDCAP_AVL ?
+ "(Automatic Volume Level supported)" : "",
+ p_sys->i_audio == p_sys->i_selected_audio_input ? '*' : ' ' );
+
+ p_sys->i_audio++;
+ }
+ }
+
+ /* List tuner caps */
+ if( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER )
+ {
+ struct v4l2_tuner tuner;
+ memset( &tuner, 0, sizeof(tuner) );
+ while( v4l2_ioctl( i_fd, VIDIOC_G_TUNER, &tuner ) >= 0 )
+ {
+ p_sys->i_tuner++;
+ memset( &tuner, 0, sizeof(tuner) );
+ tuner.index = p_sys->i_tuner;
+ }
+
+ p_sys->p_tuners = calloc( 1, p_sys->i_tuner * sizeof( struct v4l2_tuner ) );
+ if( !p_sys->p_tuners ) goto open_failed;
+
+ for( i_index = 0; i_index < p_sys->i_tuner; i_index++ )
+ {
+ p_sys->p_tuners[i_index].index = i_index;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_G_TUNER, &p_sys->p_tuners[i_index] ) )
+ {
+ msg_Err( p_obj, "cannot get tuner characteristics (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "tuner %i (%s) has type: %s, "
+ "frequency range: %.1f %s -> %.1f %s",
+ i_index,
+ p_sys->p_tuners[i_index].name,
+ p_sys->p_tuners[i_index].type
+ == V4L2_TUNER_RADIO ?
+ "Radio" : "Analog TV",
+ p_sys->p_tuners[i_index].rangelow * 62.5,
+ p_sys->p_tuners[i_index].capability &
+ V4L2_TUNER_CAP_LOW ?
+ "Hz" : "kHz",
+ p_sys->p_tuners[i_index].rangehigh * 62.5,
+ p_sys->p_tuners[i_index].capability &
+ V4L2_TUNER_CAP_LOW ?
+ "Hz" : "kHz" );
+
+ struct v4l2_frequency frequency;
+ memset( &frequency, 0, sizeof( frequency ) );
+ if( v4l2_ioctl( i_fd, VIDIOC_G_FREQUENCY, &frequency ) < 0 )
+ {
+ msg_Err( p_obj, "cannot get tuner frequency (%m)" );
+ goto open_failed;
+ }
+ msg_Dbg( p_obj, "tuner %i (%s) frequency: %.1f %s",
+ i_index,
+ p_sys->p_tuners[i_index].name,
+ frequency.frequency * 62.5,
+ p_sys->p_tuners[i_index].capability &
+ V4L2_TUNER_CAP_LOW ?
+ "Hz" : "kHz" );
+ }
+ }
+
+ /* Probe for available chromas */
+ if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
+ {
+ struct v4l2_fmtdesc codec;
+
+ i_index = 0;
+ memset( &codec, 0, sizeof(codec) );
+ codec.index = i_index;
+ codec.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FMT, &codec ) >= 0 )
+ {
+ i_index++;
+ codec.index = i_index;
+ }
+
+ p_sys->i_codec = i_index;
+
+ p_sys->p_codecs = calloc( 1, p_sys->i_codec * sizeof( struct v4l2_fmtdesc ) );
+
+ for( i_index = 0; i_index < p_sys->i_codec; i_index++ )
+ {
+ p_sys->p_codecs[i_index].index = i_index;
+ p_sys->p_codecs[i_index].type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUM_FMT, &p_sys->p_codecs[i_index] ) < 0 )
+ {
+ msg_Err( p_obj, "cannot get codec description (%m)" );
+ goto open_failed;
+ }
+
+ /* only print if vlc supports the format */
+ char psz_fourcc_v4l2[5];
+ memset( &psz_fourcc_v4l2, 0, sizeof( psz_fourcc_v4l2 ) );
+ vlc_fourcc_to_char( p_sys->p_codecs[i_index].pixelformat,
+ &psz_fourcc_v4l2 );
+ bool b_codec_supported = false;
+ for( int i = 0; v4l2chroma_to_fourcc[i].i_v4l2 != 0; i++ )
+ {
+ if( v4l2chroma_to_fourcc[i].i_v4l2 == p_sys->p_codecs[i_index].pixelformat )
+ {
+ b_codec_supported = true;
+
+ char psz_fourcc[5];
+ memset( &psz_fourcc, 0, sizeof( psz_fourcc ) );
+ vlc_fourcc_to_char( v4l2chroma_to_fourcc[i].i_fourcc,
+ &psz_fourcc );
+ msg_Dbg( p_obj, "device supports chroma %4s [%s, %s]",
+ psz_fourcc,
+ p_sys->p_codecs[i_index].description,
+ psz_fourcc_v4l2 );
+
+#ifdef VIDIOC_ENUM_FRAMESIZES
+ /* This is new in Linux 2.6.19 */
+ /* List valid frame sizes for this format */
+ struct v4l2_frmsizeenum frmsize;
+ frmsize.index = 0;
+ frmsize.pixel_format = p_sys->p_codecs[i_index].pixelformat;
+ if( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) < 0 )
+ {
+ /* Not all devices support this ioctl */
+ msg_Warn( p_obj, "Unable to query for frame sizes" );
+ }
+ else
+ {
+ switch( frmsize.type )
+ {
+ case V4L2_FRMSIZE_TYPE_DISCRETE:
+ do
+ {
+ msg_Dbg( p_obj,
+ " device supports size %dx%d",
+ frmsize.discrete.width, frmsize.discrete.height );
+ frmsize.index++;
+ } while( v4l2_ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) >= 0 );
+ break;
+ case V4L2_FRMSIZE_TYPE_STEPWISE:
+ msg_Dbg( p_obj,
+ " device supports sizes %dx%d to %dx%d using %dx%d increments",
+ frmsize.stepwise.min_width, frmsize.stepwise.min_height,
+ frmsize.stepwise.max_width, frmsize.stepwise.max_height,
+ frmsize.stepwise.step_width, frmsize.stepwise.step_height );
+ break;
+ case V4L2_FRMSIZE_TYPE_CONTINUOUS:
+ msg_Dbg( p_obj,
+ " device supports all sizes %dx%d to %dx%d",
+ frmsize.stepwise.min_width, frmsize.stepwise.min_height,
+ frmsize.stepwise.max_width, frmsize.stepwise.max_height );
+ break;
+ }
+ }
+#endif
+ }
+ }
+ if( !b_codec_supported )
+ {
+ msg_Dbg( p_obj,
+ "device codec %4s (%s) not supported",
+ psz_fourcc_v4l2,
+ p_sys->p_codecs[i_index].description );
+ }
+ }
+ }
+
+
+ if( i_fd >= 0 ) v4l2_close( i_fd );
+ return true;
+
+open_failed:
+
+ if( i_fd >= 0 ) v4l2_close( i_fd );
+ return false;
+
+}
+
+static void name2var( unsigned char *name )
+{
+ for( ; *name; name++ )
+ *name = (*name == ' ') ? '_' : tolower( *name );
+}
+
+/*****************************************************************************
+ * Print a user-class v4l2 control's details, create the relevant variable,
+ * change the value if needed.
+ *****************************************************************************/
+static void ControlListPrint( vlc_object_t *p_obj, int i_fd,
+ struct v4l2_queryctrl queryctrl,
+ bool b_reset, bool b_demux )
+{
+ struct v4l2_querymenu querymenu;
+ unsigned int i_mid;
+
+ int i;
+ int i_val;
+
+ char *psz_name;
+ vlc_value_t val, val2;
+
+ if( queryctrl.flags & V4L2_CTRL_FLAG_GRABBED )
+ msg_Dbg( p_obj, " control is busy" );
+ if( queryctrl.flags & V4L2_CTRL_FLAG_READ_ONLY )
+ msg_Dbg( p_obj, " control is read-only" );
+
+ for( i = 0; controls[i].psz_name != NULL; i++ )
+ if( controls[i].i_cid == queryctrl.id ) break;
+
+ if( controls[i].psz_name )
+ {
+ psz_name = strdup( controls[i].psz_name );
+ char psz_cfg_name[40];
+ sprintf( psz_cfg_name, CFG_PREFIX "%s", psz_name );
+ i_val = var_CreateGetInteger( p_obj, psz_cfg_name );
+ var_Destroy( p_obj, psz_cfg_name );
+ }
+ else
+ {
+ psz_name = strdup( (const char *)queryctrl.name );
+ name2var( (unsigned char *)psz_name );
+ i_val = -1;
+ }
+
+ switch( queryctrl.type )
+ {
+ case V4L2_CTRL_TYPE_INTEGER:
+ msg_Dbg( p_obj, " integer control" );
+ msg_Dbg( p_obj,
+ " valid values: %d to %d by steps of %d",
+ queryctrl.minimum, queryctrl.maximum,
+ queryctrl.step );
+
+ var_Create( p_obj, psz_name,
+ VLC_VAR_INTEGER | VLC_VAR_HASMIN | VLC_VAR_HASMAX
+ | VLC_VAR_HASSTEP | VLC_VAR_ISCOMMAND );
+ val.i_int = queryctrl.minimum;
+ var_Change( p_obj, psz_name, VLC_VAR_SETMIN, &val, NULL );
+ val.i_int = queryctrl.maximum;
+ var_Change( p_obj, psz_name, VLC_VAR_SETMAX, &val, NULL );
+ val.i_int = queryctrl.step;
+ var_Change( p_obj, psz_name, VLC_VAR_SETSTEP, &val, NULL );
+ break;
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ msg_Dbg( p_obj, " boolean control" );
+ var_Create( p_obj, psz_name,
+ VLC_VAR_BOOL | VLC_VAR_ISCOMMAND );
+ break;
+ case V4L2_CTRL_TYPE_MENU:
+ msg_Dbg( p_obj, " menu control" );
+ var_Create( p_obj, psz_name,
+ VLC_VAR_INTEGER | VLC_VAR_HASCHOICE
+ | VLC_VAR_ISCOMMAND );
+ memset( &querymenu, 0, sizeof( querymenu ) );
+ for( i_mid = queryctrl.minimum;
+ i_mid <= (unsigned)queryctrl.maximum;
+ i_mid++ )
+ {
+ querymenu.index = i_mid;
+ querymenu.id = queryctrl.id;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYMENU, &querymenu ) >= 0 )
+ {
+ msg_Dbg( p_obj, " %d: %s",
+ querymenu.index, querymenu.name );
+ val.i_int = querymenu.index;
+ val2.psz_string = (char *)querymenu.name;
+ var_Change( p_obj, psz_name,
+ VLC_VAR_ADDCHOICE, &val, &val2 );
+ }
+ }
+ break;
+ case V4L2_CTRL_TYPE_BUTTON:
+ msg_Dbg( p_obj, " button control" );
+ var_Create( p_obj, psz_name,
+ VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
+ break;
+ case V4L2_CTRL_TYPE_CTRL_CLASS:
+ msg_Dbg( p_obj, " control class" );
+ var_Create( p_obj, psz_name, VLC_VAR_VOID );
+ break;
+ default:
+ msg_Dbg( p_obj, " unknown control type (FIXME)" );
+ /* FIXME */
+ break;
+ }
+
+ switch( queryctrl.type )
+ {
+ case V4L2_CTRL_TYPE_INTEGER:
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ case V4L2_CTRL_TYPE_MENU:
+ {
+ struct v4l2_control control;
+ msg_Dbg( p_obj, " default value: %d",
+ queryctrl.default_value );
+ memset( &control, 0, sizeof( control ) );
+ control.id = queryctrl.id;
+ if( v4l2_ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0 )
+ {
+ msg_Dbg( p_obj, " current value: %d", control.value );
+ }
+ if( i_val == -1 )
+ {
+ i_val = control.value;
+ if( b_reset && queryctrl.default_value != control.value )
+ {
+ msg_Dbg( p_obj, " reset value to default" );
+ Control( p_obj, i_fd, psz_name,
+ queryctrl.id, queryctrl.default_value );
+ }
+ }
+ else
+ {
+ Control( p_obj, i_fd, psz_name,
+ queryctrl.id, i_val );
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ val.psz_string = (char *)queryctrl.name;
+ var_Change( p_obj, psz_name, VLC_VAR_SETTEXT, &val, NULL );
+ val.i_int = queryctrl.id;
+ val2.psz_string = (char *)psz_name;
+ var_Change( p_obj, "allcontrols", VLC_VAR_ADDCHOICE, &val, &val2 );
+ /* bad things happen changing MPEG mid-stream
+ * so don't add to Ext Settings GUI */
+ if( V4L2_CTRL_ID2CLASS( queryctrl.id ) != V4L2_CTRL_CLASS_MPEG )
+ var_Change( p_obj, "controls", VLC_VAR_ADDCHOICE, &val, &val2 );
+
+ switch( var_Type( p_obj, psz_name ) & VLC_VAR_TYPE )
+ {
+ case VLC_VAR_BOOL:
+ var_SetBool( p_obj, psz_name, i_val );
+ break;
+ case VLC_VAR_INTEGER:
+ var_SetInteger( p_obj, psz_name, i_val );
+ break;
+ case VLC_VAR_VOID:
+ break;
+ default:
+ msg_Warn( p_obj, "FIXME: %s %s %d", __FILE__, __func__,
+ __LINE__ );
+ break;
+ }
+
+ if( b_demux )
+ var_AddCallback( p_obj, psz_name,
+ DemuxControlCallback, (void*)(intptr_t)queryctrl.id );
+ else
+ var_AddCallback( p_obj, psz_name,
+ AccessControlCallback, (void*)(intptr_t)queryctrl.id );
+
+ free( psz_name );
+}
+
+/*****************************************************************************
+ * List all user-class v4l2 controls, set them to the user specified
+ * value and create the relevant variables to enable runtime changes
+ *****************************************************************************/
+static int ControlList( vlc_object_t *p_obj, int i_fd,
+ bool b_reset, bool b_demux )
+{
+ struct v4l2_queryctrl queryctrl;
+ int i_cid;
+
+ memset( &queryctrl, 0, sizeof( queryctrl ) );
+
+ /* A list of available controls (aka the variable name) will be
+ * stored as choices in the "allcontrols" variable. We'll thus be able
+ * to use those to create an appropriate interface
+ * A list of available controls that can be changed mid-stream will
+ * be stored in the "controls" variable */
+ var_Create( p_obj, "controls", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
+ var_Create( p_obj, "allcontrols", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
+
+ var_Create( p_obj, "controls-update", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
+
+ /* Add a control to reset all controls to their default values */
+ vlc_value_t val, val2;
+ var_Create( p_obj, "controls-reset", VLC_VAR_VOID | VLC_VAR_ISCOMMAND );
+ val.psz_string = _( "Reset controls to default" );
+ var_Change( p_obj, "controls-reset", VLC_VAR_SETTEXT, &val, NULL );
+ val.i_int = -1;
+ val2.psz_string = (char *)"controls-reset";
+ var_Change( p_obj, "controls", VLC_VAR_ADDCHOICE, &val, &val2 );
+ if (b_demux)
+ var_AddCallback( p_obj, "controls-reset", DemuxControlResetCallback, NULL );
+ else
+ var_AddCallback( p_obj, "controls-reset", AccessControlResetCallback, NULL );
+
+ queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ msg_Dbg( p_obj, "Extended control API supported by v4l2 driver" );
+
+ /* List extended controls */
+ queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
+ while( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ if( queryctrl.type == V4L2_CTRL_TYPE_CTRL_CLASS )
+ {
+ msg_Dbg( p_obj, "%s", queryctrl.name );
+ queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+ continue;
+ }
+ switch( V4L2_CTRL_ID2CLASS( queryctrl.id ) )
+ {
+ case V4L2_CTRL_CLASS_USER:
+ msg_Dbg( p_obj, "Available control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ break;
+ case V4L2_CTRL_CLASS_MPEG:
+ name2var( queryctrl.name );
+ msg_Dbg( p_obj, "Available MPEG control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ break;
+ default:
+ msg_Dbg( p_obj, "Available private control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ break;
+ }
+ ControlListPrint( p_obj, i_fd, queryctrl, b_reset, b_demux );
+ queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+ }
+ }
+ else
+ {
+ msg_Dbg( p_obj, "Extended control API not supported by v4l2 driver" );
+
+ /* List public controls */
+ for( i_cid = V4L2_CID_BASE;
+ i_cid < V4L2_CID_LASTP1;
+ i_cid ++ )
+ {
+ queryctrl.id = i_cid;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ continue;
+ msg_Dbg( p_obj, "Available control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ ControlListPrint( p_obj, i_fd, queryctrl, b_reset, b_demux );
+ }
+ }
+
+ /* List private controls */
+ for( i_cid = V4L2_CID_PRIVATE_BASE;
+ ;
+ i_cid ++ )
+ {
+ queryctrl.id = i_cid;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ continue;
+ msg_Dbg( p_obj, "Available private control: %s (%x)",
+ queryctrl.name, queryctrl.id );
+ ControlListPrint( p_obj, i_fd, queryctrl, b_reset, b_demux );
+ }
+ else
+ break;
+ }
+ }
+
+ return VLC_SUCCESS;
+}
+
+static void SetAvailControlsByString( vlc_object_t *p_obj, demux_sys_t *p_sys,
+ int i_fd )
+{
+ char *psz_parser = p_sys->psz_set_ctrls;
+ vlc_value_t val, text, name;
+
+ if( psz_parser == NULL )
+ return;
+
+ if( *psz_parser == '{' )
+ psz_parser++;
+
+ int i_ret = var_Change( p_obj, "allcontrols", VLC_VAR_GETCHOICES,
+ &val, &text );
+ if( i_ret < 0 )
+ {
+ msg_Err( p_obj, "Oops, can't find 'allcontrols' variable." );
+ return;
+ }
+
+ while( *psz_parser && *psz_parser != '}' )
+ {
+ char *psz_delim, *psz_assign;
+
+ while( *psz_parser == ',' || *psz_parser == ' ' )
+ psz_parser++;
+
+ psz_delim = strchr( psz_parser, ',' );
+ if( psz_delim == NULL )
+ psz_delim = strchr( psz_parser, '}' );
+ if( psz_delim == NULL )
+ psz_delim = psz_parser + strlen( psz_parser );
+
+ psz_assign = memchr( psz_parser, '=', psz_delim - psz_parser );
+ if( psz_assign == NULL )
+ {
+ char *psz_name = strndup( psz_parser, psz_delim - psz_parser );
+ msg_Err( p_obj, "%s missing '='", psz_name );
+ free( psz_name );
+ psz_parser = psz_delim + 1;
+ continue;
+ }
+
+ for( int i = 0;
+ i < val.p_list->i_count ;//&& psz_parser < psz_assign;
+ i++ )
+ {
+ const char *psz_var = text.p_list->p_values[i].psz_string;
+ int i_cid = val.p_list->p_values[i].i_int;
+ var_Change( p_obj, psz_var, VLC_VAR_GETTEXT, &name, NULL );
+ const char *psz_name = name.psz_string;
+
+ int i_availstrlen = strlen( psz_name );
+ int i_parsestrlen = psz_assign - psz_parser;
+ int i_maxstrlen = __MAX( i_availstrlen, i_parsestrlen);
+
+ if( !strncasecmp( psz_name, psz_parser, i_maxstrlen ) )
+ {
+ Control( p_obj, i_fd, psz_name, i_cid,
+ strtol( ++psz_assign, &psz_parser, 0) );
+ }
+ }
+
+ if( psz_parser < psz_assign )
+ {
+ char *psz_name = strndup( psz_parser, psz_assign - psz_parser );
+ msg_Err( p_obj, "Control %s not available", psz_name );
+ free( psz_name );
+ psz_parser = ( *psz_delim ) ? ( psz_delim + 1 ) : psz_delim;
+ }
+ }
+}
+
+/*****************************************************************************
+ * Reset all user-class v4l2 controls to their default value
+ *****************************************************************************/
+static int ControlReset( vlc_object_t *p_obj, int i_fd )
+{
+ struct v4l2_queryctrl queryctrl;
+ int i_cid;
+ memset( &queryctrl, 0, sizeof( queryctrl ) );
+
+ queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ /* Extended control API supported */
+ queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
+ while( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ if( queryctrl.type == V4L2_CTRL_TYPE_CTRL_CLASS
+ || V4L2_CTRL_ID2CLASS( queryctrl.id ) == V4L2_CTRL_CLASS_MPEG )
+ {
+ queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+ continue;
+ }
+ struct v4l2_control control;
+ memset( &control, 0, sizeof( control ) );
+ control.id = queryctrl.id;
+ if( v4l2_ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
+ && queryctrl.default_value != control.value )
+ {
+ int i;
+ for( i = 0; controls[i].psz_name != NULL; i++ )
+ if( controls[i].i_cid == queryctrl.id ) break;
+ name2var( queryctrl.name );
+ Control( p_obj, i_fd,
+ controls[i].psz_name ? : (const char *)queryctrl.name,
+ queryctrl.id, queryctrl.default_value );
+ }
+ queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+ }
+ }
+ else
+ {
+
+ /* public controls */
+ for( i_cid = V4L2_CID_BASE;
+ i_cid < V4L2_CID_LASTP1;
+ i_cid ++ )
+ {
+ queryctrl.id = i_cid;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ struct v4l2_control control;
+ if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ continue;
+ memset( &control, 0, sizeof( control ) );
+ control.id = queryctrl.id;
+ if( v4l2_ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
+ && queryctrl.default_value != control.value )
+ {
+ int i;
+ for( i = 0; controls[i].psz_name != NULL; i++ )
+ if( controls[i].i_cid == queryctrl.id ) break;
+ name2var( queryctrl.name );
+ Control( p_obj, i_fd,
+ controls[i].psz_name ? : (const char *)queryctrl.name,
+ queryctrl.id, queryctrl.default_value );
+ }
+ }
+ }
+
+ /* private controls */
+ for( i_cid = V4L2_CID_PRIVATE_BASE;
+ ;
+ i_cid ++ )
+ {
+ queryctrl.id = i_cid;
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
+ {
+ struct v4l2_control control;
+ if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ continue;
+ memset( &control, 0, sizeof( control ) );
+ control.id = queryctrl.id;
+ if( v4l2_ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
+ && queryctrl.default_value != control.value )
+ {
+ name2var( queryctrl.name );
+ Control( p_obj, i_fd, (const char *)queryctrl.name,
+ queryctrl.id, queryctrl.default_value );
+ }
+ }
+ else
+ break;
+ }
+ }
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Issue user-class v4l2 controls
+ *****************************************************************************/
+static int Control( vlc_object_t *p_obj, int i_fd,
+ const char *psz_name, int i_cid, int i_value )
+{
+ struct v4l2_queryctrl queryctrl;
+ struct v4l2_control control;
+ struct v4l2_ext_control ext_control;
+ struct v4l2_ext_controls ext_controls;
+
+ if( i_value == -1 )
+ return VLC_SUCCESS;
+
+ memset( &queryctrl, 0, sizeof( queryctrl ) );
+
+ queryctrl.id = i_cid;
+
+ if( v4l2_ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) < 0
+ || queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
+ {
+ msg_Dbg( p_obj, "%s (%x) control is not supported.", psz_name, i_cid );
+ return VLC_EGENERIC;
+ }
+
+ memset( &control, 0, sizeof( control ) );
+ memset( &ext_control, 0, sizeof( ext_control ) );
+ memset( &ext_controls, 0, sizeof( ext_controls ) );
+ control.id = i_cid;
+ ext_control.id = i_cid;
+ ext_controls.ctrl_class = V4L2_CTRL_ID2CLASS( i_cid );
+ ext_controls.count = 1;
+ ext_controls.controls = &ext_control;
+
+ int i_ret = -1;
+
+ if( i_value >= 0 )
+ {
+ ext_control.value = i_value;
+ if( v4l2_ioctl( i_fd, VIDIOC_S_EXT_CTRLS, &ext_controls ) < 0 )
+ {
+ control.value = i_value;
+ if( v4l2_ioctl( i_fd, VIDIOC_S_CTRL, &control ) < 0 )
+ {
+ msg_Err( p_obj, "unable to set %s (%x) to %d (%m)",
+ psz_name, i_cid, i_value );
+ return VLC_EGENERIC;
+ }
+ i_ret = v4l2_ioctl( i_fd, VIDIOC_G_CTRL, &control );
+ }
+ else
+ {
+ i_ret = v4l2_ioctl( i_fd, VIDIOC_G_EXT_CTRLS, &ext_controls );
+ control.value = ext_control.value;
+ }
+ }
+
+ if( i_ret >= 0 )
+ {
+ vlc_value_t val;
+ msg_Dbg( p_obj, "video %s: %d", psz_name, control.value );
+ switch( var_Type( p_obj, psz_name ) & VLC_VAR_TYPE )
+ {
+ case VLC_VAR_BOOL:
+ val.b_bool = control.value;
+ var_Change( p_obj, psz_name, VLC_VAR_SETVALUE, &val, NULL );
+ var_SetVoid( p_obj, "controls-update" );
+ break;
+ case VLC_VAR_INTEGER:
+ val.i_int = control.value;
+ var_Change( p_obj, psz_name, VLC_VAR_SETVALUE, &val, NULL );
+ var_SetVoid( p_obj, "controls-update" );
+ break;
+ }
+ }
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * On the fly change settings callback
+ *****************************************************************************/
+static int DemuxControlCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
+ void *p_data )
+{
+ (void)oldval;
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys = p_demux->p_sys;
+ int i_cid = (long int)p_data;
+
+ int i_fd = p_sys->i_fd;
+
+ if( i_fd < 0 )
+ return VLC_EGENERIC;
+
+ Control( p_this, i_fd, psz_var, i_cid, newval.i_int );
+
+ return VLC_EGENERIC;
+}
+
+static int DemuxControlResetCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ (void)psz_var; (void)oldval; (void)newval; (void)p_data;
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ int i_fd = p_sys->i_fd;
+
+ if( i_fd < 0 )
+ return VLC_EGENERIC;
+
+ ControlReset( p_this, i_fd );
+
+ return VLC_EGENERIC;
+}
+
+static int AccessControlCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval, vlc_value_t newval,
+ void *p_data )
+{
+ (void)oldval;
+ access_t *p_access = (access_t *)p_this;
+ demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
+ int i_cid = (long int)p_data;
+
+ int i_fd = p_sys->i_fd;
+
+ if( i_fd < 0 )
+ return VLC_EGENERIC;
+
+ Control( p_this, i_fd, psz_var, i_cid, newval.i_int );
+
+ return VLC_EGENERIC;
+}
+
+static int AccessControlResetCallback( vlc_object_t *p_this,
+ const char *psz_var, vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ (void)psz_var; (void)oldval; (void)newval; (void)p_data;
+ access_t *p_access = (access_t *)p_this;
+ demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
+
+ int i_fd = p_sys->i_fd;
+
+ if( i_fd < 0 )
+ return VLC_EGENERIC;
+
+ ControlReset( p_this, i_fd );
+
+ return VLC_EGENERIC;
}
projects / vlc / blobdiff