mirror of
https://code.videolan.org/videolan/vlc
synced 2024-09-12 13:44:56 +02:00
0f7683443f
Next step will be to split the module in different source files, the current code is quite a mess. Also fix compilation of the module if HAVE_ALSA isn't defined.
3052 lines
99 KiB
C
3052 lines
99 KiB
C
/*****************************************************************************
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* v4l2.c : Video4Linux2 input module for vlc
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*****************************************************************************
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* Copyright (C) 2002-2007 the VideoLAN team
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* $Id$
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*
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* Authors: Benjamin Pracht <bigben at videolan dot org>
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* Richard Hosking <richard at hovis dot net>
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* Antoine Cellerier <dionoea at videolan d.t org>
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* Dennis Lou <dlou99 at yahoo dot com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*
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* Sections based on the reference V4L2 capture example at
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* http://v4l2spec.bytesex.org/spec/capture-example.html
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*
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* ALSA support based on parts of
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* http://www.equalarea.com/paul/alsa-audio.html
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* and hints taken from alsa-utils (aplay/arecord)
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* http://www.alsa-project.org
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*/
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/*
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* TODO: Tuner partial implementation.
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* TODO: Add more MPEG stream params
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*/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <vlc/vlc.h>
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#include <vlc_access.h>
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#include <vlc_demux.h>
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#include <vlc_input.h>
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#include <vlc_vout.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <linux/videodev2.h>
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#include <sys/soundcard.h>
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#ifdef HAVE_ALSA
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# define ALSA_PCM_NEW_HW_PARAMS_API
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# define ALSA_PCM_NEW_SW_PARAMS_API
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# include <alsa/asoundlib.h>
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#endif
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#include <poll.h>
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/*****************************************************************************
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* Module descriptior
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*****************************************************************************/
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static int DemuxOpen ( vlc_object_t * );
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static void DemuxClose( vlc_object_t * );
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static int AccessOpen ( vlc_object_t * );
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static void AccessClose( vlc_object_t * );
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#define DEV_TEXT N_("Device name")
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#define DEV_LONGTEXT N_( \
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"Name of the device to use. " \
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"If you don't specify anything, /dev/video0 will be used.")
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#define STANDARD_TEXT N_( "Standard" )
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#define STANDARD_LONGTEXT N_( \
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"Video standard (Default, SECAM, PAL, or NTSC)." )
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#define CHROMA_TEXT N_("Video input chroma format")
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#define CHROMA_LONGTEXT N_( \
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"Force the Video4Linux2 video device to use a specific chroma format " \
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"(eg. I420 or I422 for raw images, MJPEG for M-JPEG compressed input) " \
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"(Complete list: GREY, I240, RV16, RV15, RV24, RV32, YUY2, YUYV, UYVY, " \
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"I41N, I422, I420, I411, I410, MJPG)")
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#define INPUT_TEXT N_( "Input" )
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#define INPUT_LONGTEXT N_( \
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"Input of the card to use (Usually, 0 = tuner, " \
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"1 = composite, 2 = svideo)." )
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#define IOMETHOD_TEXT N_( "IO Method" )
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#define IOMETHOD_LONGTEXT N_( \
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"IO Method (READ, MMAP, USERPTR)." )
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#define WIDTH_TEXT N_( "Width" )
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#define WIDTH_LONGTEXT N_( \
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"Force width (-1 for autodetect)." )
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#define HEIGHT_TEXT N_( "Height" )
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#define HEIGHT_LONGTEXT N_( \
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"Force height (-1 for autodetect)." )
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#define FPS_TEXT N_( "Framerate" )
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#define FPS_LONGTEXT N_( "Framerate to capture, if applicable " \
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"(-1 for autodetect)." )
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#define CTRL_RESET_TEXT N_( "Reset v4l2 controls" )
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#define CTRL_RESET_LONGTEXT N_( \
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"Reset controls to defaults provided by the v4l2 driver." )
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#define BRIGHTNESS_TEXT N_( "Brightness" )
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#define BRIGHTNESS_LONGTEXT N_( \
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"Brightness of the video input (if supported by v4l2 driver)." )
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#define CONTRAST_TEXT N_( "Contrast" )
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#define CONTRAST_LONGTEXT N_( \
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"Contrast of the video input (if supported by v4l2 driver)." )
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#define SATURATION_TEXT N_( "Saturation" )
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#define SATURATION_LONGTEXT N_( \
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"Saturation of the video input (if supported by v4l2 driver)." )
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#define HUE_TEXT N_( "Hue" )
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#define HUE_LONGTEXT N_( \
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"Hue of the video input (if supported by v4l2 driver)." )
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#define GAMMA_TEXT N_( "Gamma" )
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#define GAMMA_LONGTEXT N_( \
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"Gamma of the video input (if supported by v4l2 driver)." )
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#define ADEV_TEXT N_("Audio device name")
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#define ADEV_LONGTEXT N_( \
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"Name of the audio device to use. " \
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"If you don't specify anything, \"/dev/dsp\" will be used for OSS, " \
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"\"default\" for Alsa (if Alsa support is enabled).")
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#define AUDIO_METHOD_TEXT N_( "Audio method" )
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#define AUDIO_METHOD_LONGTEXT N_( \
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"Audio method to use: 1 for OSS, 2 for ALSA, 3 for ALSA or OSS " \
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"(ALSA is prefered)." )
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#define STEREO_TEXT N_( "Stereo" )
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#define STEREO_LONGTEXT N_( \
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"Capture the audio stream in stereo." )
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#define SAMPLERATE_TEXT N_( "Samplerate" )
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#define SAMPLERATE_LONGTEXT N_( \
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"Samplerate of the captured audio stream, in Hz (eg: 11025, 22050, 44100, 48000)" )
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#define CACHING_TEXT N_("Caching value in ms")
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#define CACHING_LONGTEXT N_( \
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"Caching value for V4L2 captures. This " \
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"value should be set in milliseconds." )
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typedef enum {
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IO_METHOD_READ,
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IO_METHOD_MMAP,
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IO_METHOD_USERPTR,
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} io_method;
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static int i_standards_list[] =
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{ V4L2_STD_UNKNOWN, V4L2_STD_SECAM, V4L2_STD_PAL, V4L2_STD_NTSC };
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static const char *psz_standards_list_text[] =
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{ N_("Default"), N_("SECAM"), N_("PAL"), N_("NTSC") };
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static int i_iomethod_list[] =
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{ IO_METHOD_READ, IO_METHOD_MMAP, IO_METHOD_USERPTR };
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static const char *psz_iomethod_list_text[] =
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{ N_("READ"), N_("MMAP"), N_("USERPTR") };
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#define FIND_VIDEO 1
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#define FIND_AUDIO 2
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#define AUDIO_METHOD_OSS 1
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#define OSS_DEFAULT "/dev/dsp"
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#define AUDIO_METHOD_ALSA 2
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#define ALSA_DEFAULT "default"
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#define CFG_PREFIX "v4l2-"
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vlc_module_begin();
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set_shortname( _("Video4Linux2") );
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set_description( _("Video4Linux2 input") );
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set_category( CAT_INPUT );
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set_subcategory( SUBCAT_INPUT_ACCESS );
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set_section( N_( "Video input" ), NULL );
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add_string( CFG_PREFIX "dev", "/dev/video0", 0, DEV_TEXT, DEV_LONGTEXT,
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VLC_FALSE );
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add_integer( CFG_PREFIX "standard", 0, NULL, STANDARD_TEXT,
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STANDARD_LONGTEXT, VLC_FALSE );
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change_integer_list( i_standards_list, psz_standards_list_text, 0 );
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add_string( CFG_PREFIX "chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
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VLC_TRUE );
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add_integer( CFG_PREFIX "input", 0, NULL, INPUT_TEXT, INPUT_LONGTEXT,
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VLC_TRUE );
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add_integer( CFG_PREFIX "io", IO_METHOD_MMAP, NULL, IOMETHOD_TEXT,
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IOMETHOD_LONGTEXT, VLC_TRUE );
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change_integer_list( i_iomethod_list, psz_iomethod_list_text, 0 );
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add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
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WIDTH_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
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HEIGHT_LONGTEXT, VLC_TRUE );
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add_float( CFG_PREFIX "fps", 0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
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set_section( N_( "Audio input" ), NULL );
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add_string( CFG_PREFIX "adev", NULL, 0, ADEV_TEXT, ADEV_LONGTEXT,
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VLC_FALSE );
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#ifdef HAVE_ALSA
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add_integer( CFG_PREFIX "audio-method", AUDIO_METHOD_OSS|AUDIO_METHOD_ALSA,
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NULL, AUDIO_METHOD_TEXT, AUDIO_METHOD_LONGTEXT, VLC_TRUE );
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#endif
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add_bool( CFG_PREFIX "stereo", VLC_TRUE, NULL, STEREO_TEXT, STEREO_LONGTEXT,
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VLC_TRUE );
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add_integer( CFG_PREFIX "samplerate", 48000, NULL, SAMPLERATE_TEXT,
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SAMPLERATE_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL,
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CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
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set_section( N_( "Controls" ), N_( "v4l2 driver controls" ) );
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add_bool( CFG_PREFIX "controls-reset", VLC_FALSE, NULL, CTRL_RESET_TEXT,
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CTRL_RESET_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "brightness", -1, NULL, BRIGHTNESS_TEXT,
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BRIGHTNESS_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "contrast", -1, NULL, CONTRAST_TEXT,
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CONTRAST_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "saturation", -1, NULL, SATURATION_TEXT,
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SATURATION_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "hue", -1, NULL, HUE_TEXT,
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HUE_LONGTEXT, VLC_TRUE );
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add_integer( CFG_PREFIX "gamma", -1, NULL, GAMMA_TEXT,
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GAMMA_LONGTEXT, VLC_TRUE );
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add_shortcut( "v4l2" );
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set_capability( "access_demux", 10 );
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set_callbacks( DemuxOpen, DemuxClose );
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add_submodule();
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set_description( _("Video4Linux2 Compressed A/V") );
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set_capability( "access2", 0 );
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/* use these when open as access_demux fails; VLC will use another demux */
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set_callbacks( AccessOpen, AccessClose );
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vlc_module_end();
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/*****************************************************************************
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* Access: local prototypes
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*****************************************************************************/
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static void CommonClose( vlc_object_t *, demux_sys_t * );
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static void ParseMRL( demux_sys_t *, char *, vlc_object_t * );
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static void GetV4L2Params( demux_sys_t *, vlc_object_t * );
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static int DemuxControl( demux_t *, int, va_list );
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static int AccessControl( access_t *, int, va_list );
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static int Demux( demux_t * );
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static ssize_t AccessRead( access_t *, uint8_t *, size_t );
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static block_t* GrabVideo( demux_t *p_demux );
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static block_t* ProcessVideoFrame( demux_t *p_demux, uint8_t *p_frame, size_t );
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static block_t* GrabAudio( demux_t *p_demux );
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static vlc_bool_t IsPixelFormatSupported( demux_t *p_demux,
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unsigned int i_pixelformat );
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static char* ResolveALSADeviceName( const char *psz_device );
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static int OpenVideoDev( vlc_object_t *, demux_sys_t *, vlc_bool_t );
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static int OpenAudioDev( vlc_object_t *, demux_sys_t *, vlc_bool_t );
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static vlc_bool_t ProbeVideoDev( vlc_object_t *, demux_sys_t *,
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char *psz_device );
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static vlc_bool_t ProbeAudioDev( vlc_object_t *, demux_sys_t *,
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char *psz_device );
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static int ControlList( vlc_object_t *, int , vlc_bool_t, vlc_bool_t );
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static int Control( vlc_object_t *, int i_fd,
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const char *psz_name, int i_cid, int i_value );
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static int DemuxControlCallback( vlc_object_t *p_this, const char *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data );
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static int DemuxControlResetCallback( vlc_object_t *p_this, const char *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data );
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static int AccessControlCallback( vlc_object_t *p_this, const char *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data );
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static int AccessControlResetCallback( vlc_object_t *p_this,
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const char *psz_var, vlc_value_t oldval,
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vlc_value_t newval, void *p_data );
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static struct
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{
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unsigned int i_v4l2;
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int i_fourcc;
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} v4l2chroma_to_fourcc[] =
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{
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/* Raw data types */
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{ V4L2_PIX_FMT_GREY, VLC_FOURCC('G','R','E','Y') },
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{ V4L2_PIX_FMT_HI240, VLC_FOURCC('I','2','4','0') },
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{ V4L2_PIX_FMT_RGB565, VLC_FOURCC('R','V','1','6') },
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{ V4L2_PIX_FMT_RGB555, VLC_FOURCC('R','V','1','5') },
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{ V4L2_PIX_FMT_BGR24, VLC_FOURCC('R','V','2','4') },
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{ V4L2_PIX_FMT_BGR32, VLC_FOURCC('R','V','3','2') },
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{ V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','2') },
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{ V4L2_PIX_FMT_YUYV, VLC_FOURCC('Y','U','Y','V') },
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{ V4L2_PIX_FMT_UYVY, VLC_FOURCC('U','Y','V','Y') },
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{ V4L2_PIX_FMT_Y41P, VLC_FOURCC('I','4','1','N') },
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{ V4L2_PIX_FMT_YUV422P, VLC_FOURCC('I','4','2','2') },
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{ V4L2_PIX_FMT_YVU420, VLC_FOURCC('I','4','2','0') },
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{ V4L2_PIX_FMT_YUV411P, VLC_FOURCC('I','4','1','1') },
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{ V4L2_PIX_FMT_YUV410, VLC_FOURCC('I','4','1','0') },
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/* Compressed data types */
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{ V4L2_PIX_FMT_MJPEG, VLC_FOURCC('M','J','P','G') },
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#if 0
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{ V4L2_PIX_FMT_JPEG, VLC_FOURCC('J','P','E','G') },
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{ V4L2_PIX_FMT_DV, VLC_FOURCC('?','?','?','?') },
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{ V4L2_PIX_FMT_MPEG, VLC_FOURCC('?','?','?','?') },
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#endif
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{ 0, 0 }
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};
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static struct
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{
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const char *psz_name;
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unsigned int i_cid;
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} controls[] =
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{
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{ "brightness", V4L2_CID_BRIGHTNESS },
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{ "contrast", V4L2_CID_CONTRAST },
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{ "saturation", V4L2_CID_SATURATION },
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{ "hue", V4L2_CID_HUE },
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{ "audio-volume", V4L2_CID_AUDIO_VOLUME },
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{ "audio-balance", V4L2_CID_AUDIO_BALANCE },
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{ "audio-bass", V4L2_CID_AUDIO_BASS },
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{ "audio-treble", V4L2_CID_AUDIO_TREBLE },
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{ "audio-mute", V4L2_CID_AUDIO_MUTE },
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{ "audio-loudness", V4L2_CID_AUDIO_LOUDNESS },
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{ "black-level", V4L2_CID_BLACK_LEVEL },
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{ "auto-white-balance", V4L2_CID_AUTO_WHITE_BALANCE },
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{ "do-white-balance", V4L2_CID_DO_WHITE_BALANCE },
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{ "red-balance", V4L2_CID_RED_BALANCE },
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{ "blue-balance", V4L2_CID_BLUE_BALANCE },
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{ "gamma", V4L2_CID_GAMMA },
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{ "exposure", V4L2_CID_EXPOSURE },
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{ "autogain", V4L2_CID_AUTOGAIN },
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{ "gain", V4L2_CID_GAIN },
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{ "hflip", V4L2_CID_HFLIP },
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{ "vflip", V4L2_CID_VFLIP },
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{ "hcenter", V4L2_CID_HCENTER },
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{ "vcenter", V4L2_CID_VCENTER },
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{ NULL, 0 }
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};
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struct buffer_t
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{
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void * start;
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size_t length;
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void * orig_userp;
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};
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struct demux_sys_t
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{
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char *psz_device; /* Main device from MRL, can be video or audio */
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char *psz_vdev;
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int i_fd_video;
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char *psz_adev;
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int i_fd_audio;
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char *psz_requested_chroma;
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/* Video */
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io_method io;
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int i_pts;
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struct v4l2_capability dev_cap;
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int i_input;
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struct v4l2_input *p_inputs;
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int i_selected_input;
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int i_standard;
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struct v4l2_standard *p_standards;
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v4l2_std_id i_selected_standard_id;
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int i_audio;
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/* V4L2 devices cannot have more than 32 audio inputs */
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struct v4l2_audio p_audios[32];
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int i_tuner;
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struct v4l2_tuner *p_tuners;
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int i_codec;
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struct v4l2_fmtdesc *p_codecs;
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struct buffer_t *p_buffers;
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unsigned int i_nbuffers;
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int i_width;
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int i_height;
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float f_fps; /* <= 0.0 mean to grab at full rate */
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mtime_t i_video_pts; /* only used when f_fps > 0 */
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int i_fourcc;
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es_out_id_t *p_es_video;
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/* Audio */
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unsigned int i_sample_rate;
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vlc_bool_t b_stereo;
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int i_audio_max_frame_size;
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|
block_t *p_block_audio;
|
|
es_out_id_t *p_es_audio;
|
|
|
|
int i_audio_method;
|
|
|
|
#ifdef HAVE_ALSA
|
|
/* ALSA Audio */
|
|
snd_pcm_t *p_alsa_pcm;
|
|
int i_alsa_frame_size;
|
|
int i_alsa_chunk_size;
|
|
#endif
|
|
};
|
|
|
|
static int FindMainDevice( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
int i_flags, vlc_bool_t b_demux,
|
|
vlc_bool_t b_forced )
|
|
{
|
|
/* Find main device (video or audio) */
|
|
if( p_sys->psz_device && *p_sys->psz_device )
|
|
{
|
|
msg_Dbg( p_this, "main device='%s'", p_sys->psz_device );
|
|
|
|
/* Try to open as video device */
|
|
if( i_flags & FIND_VIDEO )
|
|
{
|
|
msg_Dbg( p_this, "trying device '%s' as video", 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 );
|
|
/* Device was a video device */
|
|
if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
|
|
p_sys->psz_vdev = p_sys->psz_device;
|
|
p_sys->psz_device = NULL;
|
|
p_sys->i_fd_video = OpenVideoDev( p_this, p_sys, b_demux );
|
|
if( p_sys->i_fd_video < 0 )
|
|
return VLC_EGENERIC;
|
|
return VLC_SUCCESS;
|
|
}
|
|
}
|
|
|
|
if( i_flags & FIND_AUDIO )
|
|
{
|
|
/* Try to open as audio device */
|
|
msg_Dbg( p_this, "trying device '%s' as audio", p_sys->psz_device );
|
|
if( ProbeAudioDev( p_this, p_sys, p_sys->psz_device ) )
|
|
{
|
|
msg_Dbg( p_this, "'%s' is an audio device", p_sys->psz_device );
|
|
/* Device was an audio device */
|
|
free( p_sys->psz_adev );
|
|
p_sys->psz_adev = p_sys->psz_device;
|
|
p_sys->psz_device = NULL;
|
|
p_sys->i_fd_audio = OpenAudioDev( p_this, p_sys, b_demux );
|
|
if( p_sys->i_fd_audio < 0 )
|
|
return VLC_EGENERIC;
|
|
return VLC_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If no device opened, only continue if the access was forced */
|
|
if( b_forced == VLC_FALSE
|
|
&& !( ( i_flags & FIND_VIDEO && p_sys->i_fd_video >= 0 )
|
|
|| ( i_flags & FIND_AUDIO && p_sys->i_fd_audio >= 0 ) ) )
|
|
{
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
/* Find video device */
|
|
if( i_flags & FIND_VIDEO && p_sys->i_fd_video < 0 )
|
|
{
|
|
if( !p_sys->psz_vdev || !*p_sys->psz_vdev )
|
|
{
|
|
if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
|
|
p_sys->psz_vdev = var_CreateGetString( p_this, "v4l2-dev" );
|
|
}
|
|
|
|
msg_Dbg( p_this, "opening '%s' as video", p_sys->psz_vdev );
|
|
if( p_sys->psz_vdev && *p_sys->psz_vdev
|
|
&& ProbeVideoDev( p_this, p_sys, p_sys->psz_vdev ) )
|
|
{
|
|
p_sys->i_fd_video = OpenVideoDev( p_this, p_sys, b_demux );
|
|
}
|
|
}
|
|
|
|
/* Find audio device */
|
|
if( i_flags & FIND_AUDIO && p_sys->i_fd_audio < 0 )
|
|
{
|
|
if( !p_sys->psz_adev )
|
|
{
|
|
p_sys->psz_adev = var_CreateGetNonEmptyString( p_this, "v4l2-adev" );
|
|
}
|
|
|
|
msg_Dbg( p_this, "opening '%s' as audio", p_sys->psz_adev );
|
|
if( ProbeAudioDev( p_this, p_sys, p_sys->psz_adev ) )
|
|
{
|
|
p_sys->i_fd_audio = OpenAudioDev( p_this, p_sys, b_demux );
|
|
}
|
|
}
|
|
|
|
if( !( ( i_flags & FIND_VIDEO && p_sys->i_fd_video >= 0 )
|
|
|| ( i_flags & FIND_AUDIO && p_sys->i_fd_audio >= 0 ) ) )
|
|
{
|
|
return VLC_EGENERIC;
|
|
}
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* DemuxOpen: opens v4l2 device, access_demux callback
|
|
*****************************************************************************
|
|
*
|
|
* url: <video device>::::
|
|
*
|
|
*****************************************************************************/
|
|
static int DemuxOpen( vlc_object_t *p_this )
|
|
{
|
|
demux_t *p_demux = (demux_t*)p_this;
|
|
demux_sys_t *p_sys;
|
|
|
|
/* Only when selected */
|
|
if( *p_demux->psz_access == '\0' ) return VLC_EGENERIC;
|
|
|
|
/* Set up p_demux */
|
|
p_demux->pf_control = DemuxControl;
|
|
p_demux->pf_demux = Demux;
|
|
p_demux->info.i_update = 0;
|
|
p_demux->info.i_title = 0;
|
|
p_demux->info.i_seekpoint = 0;
|
|
|
|
p_demux->p_sys = p_sys = calloc( 1, sizeof( demux_sys_t ) );
|
|
if( p_sys == NULL ) return VLC_ENOMEM;
|
|
|
|
GetV4L2Params(p_sys, (vlc_object_t *) p_demux);
|
|
|
|
ParseMRL( p_sys, p_demux->psz_path, (vlc_object_t *) p_demux );
|
|
|
|
#ifdef HAVE_ALSA
|
|
/* Alsa support available? */
|
|
msg_Dbg( p_demux, "ALSA input support available" );
|
|
#endif
|
|
|
|
if( FindMainDevice( p_this, p_sys, FIND_VIDEO|FIND_AUDIO,
|
|
VLC_TRUE, !strcmp( p_demux->psz_access, "v4l2" ) ) != VLC_SUCCESS )
|
|
{
|
|
DemuxClose( p_this );
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* GetV4L2Params: fill in p_sys parameters (shared by DemuxOpen and AccessOpen)
|
|
*****************************************************************************/
|
|
static void GetV4L2Params( demux_sys_t *p_sys, vlc_object_t *p_obj )
|
|
{
|
|
p_sys->i_video_pts = -1;
|
|
|
|
p_sys->i_selected_standard_id =
|
|
i_standards_list[var_CreateGetInteger( p_obj, "v4l2-standard" )];
|
|
|
|
p_sys->i_selected_input = var_CreateGetInteger( p_obj, "v4l2-input" );
|
|
|
|
p_sys->io = var_CreateGetInteger( p_obj, "v4l2-io" );
|
|
|
|
p_sys->i_width = var_CreateGetInteger( p_obj, "v4l2-width" );
|
|
p_sys->i_height = var_CreateGetInteger( p_obj, "v4l2-height" );
|
|
|
|
var_CreateGetBool( p_obj, "v4l2-controls-reset" );
|
|
|
|
p_sys->f_fps = var_CreateGetFloat( p_obj, "v4l2-fps" );
|
|
p_sys->i_sample_rate = var_CreateGetInteger( p_obj, "v4l2-samplerate" );
|
|
p_sys->psz_requested_chroma = var_CreateGetString( p_obj, "v4l2-chroma" );
|
|
|
|
#ifdef HAVE_ALSA
|
|
p_sys->i_audio_method = var_CreateGetInteger( p_obj, "v4l2-audio-method" );
|
|
#else
|
|
p_sys->i_audio_method = AUDIO_METHOD_OSS;
|
|
#endif
|
|
|
|
p_sys->b_stereo = var_CreateGetBool( p_obj, "v4l2-stereo" );
|
|
|
|
p_sys->i_pts = var_CreateGetInteger( p_obj, "v4l2-caching" );
|
|
|
|
p_sys->psz_device = p_sys->psz_vdev = p_sys->psz_adev = NULL;
|
|
p_sys->i_fd_video = -1;
|
|
p_sys->i_fd_audio = -1;
|
|
|
|
p_sys->p_es_video = p_sys->p_es_audio = 0;
|
|
p_sys->p_block_audio = 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* ParseMRL: parse the options contained in the MRL
|
|
*****************************************************************************/
|
|
static void ParseMRL( demux_sys_t *p_sys, char *psz_path, vlc_object_t *p_obj )
|
|
{
|
|
char *psz_dup = strdup( psz_path );
|
|
char *psz_parser = psz_dup;
|
|
|
|
while( *psz_parser && *psz_parser != ':' )
|
|
{
|
|
psz_parser++;
|
|
}
|
|
|
|
if( *psz_parser == ':' )
|
|
{
|
|
/* read options */
|
|
for( ;; )
|
|
{
|
|
*psz_parser++ = '\0';
|
|
|
|
if( !strncmp( psz_parser, "adev=", strlen( "adev=" ) ) )
|
|
{
|
|
int i_len;
|
|
|
|
psz_parser += strlen( "adev=" );
|
|
if( strchr( psz_parser, ':' ) )
|
|
{
|
|
i_len = strchr( psz_parser, ':' ) - psz_parser;
|
|
}
|
|
else
|
|
{
|
|
i_len = strlen( psz_parser );
|
|
}
|
|
|
|
p_sys->psz_adev = strndup( psz_parser, i_len );
|
|
if( !*p_sys->psz_adev )
|
|
{
|
|
free( p_sys->psz_adev );
|
|
p_sys->psz_adev = NULL;
|
|
}
|
|
|
|
psz_parser += i_len;
|
|
}
|
|
else 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;
|
|
|
|
psz_parser += strlen( "chroma=" );
|
|
if( strchr( psz_parser, ':' ) )
|
|
{
|
|
i_len = strchr( psz_parser, ':' ) - psz_parser;
|
|
}
|
|
else
|
|
{
|
|
i_len = strlen( psz_parser );
|
|
}
|
|
|
|
if( p_sys->psz_requested_chroma ) free( p_sys->psz_requested_chroma );
|
|
p_sys->psz_requested_chroma = strndup( psz_parser, i_len );
|
|
|
|
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, "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", VLC_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, "samplerate=",
|
|
strlen( "samplerate=" ) ) )
|
|
{
|
|
p_sys->i_sample_rate =
|
|
strtol( psz_parser + strlen( "samplerate=" ),
|
|
&psz_parser, 0 );
|
|
}
|
|
#ifdef HAVE_ALSA
|
|
else if( !strncmp( psz_parser, "audio-method", strlen( "audio-method" ) ) )
|
|
{
|
|
p_sys->i_audio_method =
|
|
strtol( psz_parser + strlen( "audio-method" ),
|
|
&psz_parser, 0 );
|
|
}
|
|
#endif
|
|
else if( !strncmp( psz_parser, "stereo", strlen( "stereo" ) ) )
|
|
{
|
|
psz_parser += strlen( "stereo" );
|
|
p_sys->b_stereo = VLC_TRUE;
|
|
}
|
|
else if( !strncmp( psz_parser, "mono", strlen( "mono" ) ) )
|
|
{
|
|
psz_parser += strlen( "mono" );
|
|
p_sys->b_stereo = VLC_FALSE;
|
|
}
|
|
else if( !strncmp( psz_parser, "caching=", strlen( "caching=" ) ) )
|
|
{
|
|
p_sys->i_pts = strtol( psz_parser + strlen( "caching=" ),
|
|
&psz_parser, 0 );
|
|
}
|
|
else
|
|
{
|
|
msg_Warn( p_obj, "unknown option" );
|
|
}
|
|
|
|
while( *psz_parser && *psz_parser != ':' )
|
|
{
|
|
psz_parser++;
|
|
}
|
|
|
|
if( *psz_parser == '\0' )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Main device */
|
|
if( *psz_dup )
|
|
{
|
|
p_sys->psz_device = strdup( psz_dup );
|
|
}
|
|
if( psz_dup ) free( psz_dup );
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* 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;
|
|
|
|
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_video >= 0 )
|
|
{
|
|
switch( p_sys->io )
|
|
{
|
|
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++ )
|
|
{
|
|
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;
|
|
ioctl( p_sys->i_fd_video, VIDIOC_DQBUF, &buf ); /* ignore result */
|
|
}
|
|
|
|
buf_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
if( ioctl( p_sys->i_fd_video, VIDIOC_STREAMOFF, &buf_type ) < 0 ) {
|
|
msg_Err( p_this, "VIDIOC_STREAMOFF failed" );
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Free Video Buffers */
|
|
if( p_sys->p_buffers ) {
|
|
switch( p_sys->io )
|
|
{
|
|
case IO_METHOD_READ:
|
|
free( p_sys->p_buffers[0].start );
|
|
break;
|
|
|
|
case IO_METHOD_MMAP:
|
|
for( i = 0; i < p_sys->i_nbuffers; ++i )
|
|
{
|
|
if( munmap( p_sys->p_buffers[i].start, p_sys->p_buffers[i].length ) )
|
|
{
|
|
msg_Err( p_this, "munmap failed" );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case IO_METHOD_USERPTR:
|
|
for( i = 0; i < p_sys->i_nbuffers; ++i )
|
|
{
|
|
free( p_sys->p_buffers[i].orig_userp );
|
|
}
|
|
break;
|
|
}
|
|
free( p_sys->p_buffers );
|
|
}
|
|
|
|
CommonClose( p_this, p_sys );
|
|
}
|
|
|
|
static void CommonClose( vlc_object_t *p_this, demux_sys_t *p_sys )
|
|
{
|
|
/* Close */
|
|
if( p_sys->i_fd_video >= 0 ) close( p_sys->i_fd_video );
|
|
#ifdef HAVE_ALSA
|
|
if( p_sys->p_alsa_pcm ) snd_pcm_close( p_sys->p_alsa_pcm );
|
|
#endif
|
|
if( p_sys->i_fd_audio >= 0 ) close( p_sys->i_fd_audio );
|
|
|
|
if( p_sys->p_block_audio ) block_Release( p_sys->p_block_audio );
|
|
free( p_sys->psz_device );
|
|
free( p_sys->psz_vdev );
|
|
free( p_sys->psz_adev );
|
|
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 );
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* AccessOpen: opens v4l2 device, access2 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;
|
|
|
|
p_access->pf_read = AccessRead;
|
|
p_access->pf_block = NULL;
|
|
p_access->pf_seek = NULL;
|
|
p_access->pf_control = AccessControl;
|
|
p_access->info.i_update = 0;
|
|
p_access->info.i_size = 0;
|
|
p_access->info.i_pos = 0;
|
|
p_access->info.b_eof = VLC_FALSE;
|
|
p_access->info.i_title = 0;
|
|
p_access->info.i_seekpoint = 0;
|
|
|
|
p_sys = calloc( 1, sizeof( demux_sys_t ) );
|
|
p_access->p_sys = (access_sys_t *) p_sys;
|
|
if( p_sys == NULL ) return VLC_ENOMEM;
|
|
|
|
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, FIND_VIDEO,
|
|
VLC_FALSE, !strcmp( p_access->psz_access, "v4l2" ) ) != VLC_SUCCESS )
|
|
{
|
|
AccessClose( p_this );
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
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;
|
|
vlc_bool_t *pb;
|
|
int64_t *pi64;
|
|
|
|
switch( i_query )
|
|
{
|
|
/* Special for access_demux */
|
|
case DEMUX_CAN_PAUSE:
|
|
case DEMUX_SET_PAUSE_STATE:
|
|
case DEMUX_CAN_CONTROL_PACE:
|
|
pb = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
|
|
*pb = VLC_FALSE;
|
|
return VLC_SUCCESS;
|
|
|
|
case DEMUX_GET_PTS_DELAY:
|
|
pi64 = (int64_t*)va_arg( args, int64_t * );
|
|
*pi64 = (int64_t)p_sys->i_pts * 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;
|
|
}
|
|
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* AccessControl: access2 callback
|
|
*****************************************************************************/
|
|
static int AccessControl( access_t *p_access, int i_query, va_list args )
|
|
{
|
|
vlc_bool_t *pb_bool;
|
|
int *pi_int;
|
|
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 = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
|
|
*pb_bool = VLC_FALSE;
|
|
break;
|
|
case ACCESS_CAN_PAUSE:
|
|
pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
|
|
*pb_bool = VLC_FALSE;
|
|
break;
|
|
case ACCESS_CAN_CONTROL_PACE:
|
|
pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
|
|
*pb_bool = VLC_FALSE;
|
|
break;
|
|
|
|
/* */
|
|
case ACCESS_GET_MTU:
|
|
pi_int = (int*)va_arg( args, int * );
|
|
*pi_int = 0;
|
|
break;
|
|
|
|
case ACCESS_GET_PTS_DELAY:
|
|
pi_64 = (int64_t*)va_arg( args, int64_t * );
|
|
*pi_64 = (int64_t) p_sys->i_pts * 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: access2 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_video;
|
|
ufd.events = POLLIN;
|
|
|
|
if( p_access->info.b_eof )
|
|
return 0;
|
|
|
|
do
|
|
{
|
|
if( p_access->b_die )
|
|
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 = read( p_sys->i_fd_video, p_buffer, i_len );
|
|
if( i_ret == 0 )
|
|
{
|
|
p_access->info.b_eof = VLC_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;
|
|
es_out_id_t *p_es = p_sys->p_es_audio;
|
|
block_t *p_block = NULL;
|
|
|
|
/* Try grabbing audio frames first */
|
|
if( p_sys->i_fd_audio < 0 || !( p_block = GrabAudio( p_demux ) ) )
|
|
{
|
|
/* Try grabbing video frame */
|
|
p_es = p_sys->p_es_video;
|
|
if( p_sys->i_fd_video > 0 ) p_block = GrabVideo( p_demux );
|
|
}
|
|
|
|
if( !p_block )
|
|
{
|
|
/* Sleep so we do not consume all the cpu, 10ms seems
|
|
* like a good value (100fps) */
|
|
msleep( 10 );
|
|
return 1;
|
|
}
|
|
|
|
es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
|
|
es_out_Send( p_demux->out, 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 = read( p_sys->i_fd_video, 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 (ioctl( p_sys->i_fd_video, 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( ioctl( p_sys->i_fd_video, VIDIOC_QBUF, &buf ) < 0 )
|
|
{
|
|
msg_Err (p_demux, "Failed to unlock (VIDIOC_QBUF)");
|
|
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 (ioctl( p_sys->i_fd_video, 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( ioctl( p_sys->i_fd_video, VIDIOC_QBUF, &buf ) < 0 )
|
|
{
|
|
msg_Err (p_demux, "Failed to unlock (VIDIOC_QBUF)");
|
|
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;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* GrabAudio: Grab an audio frame
|
|
*****************************************************************************/
|
|
static block_t* GrabAudio( demux_t *p_demux )
|
|
{
|
|
demux_sys_t *p_sys = p_demux->p_sys;
|
|
struct audio_buf_info buf_info;
|
|
int i_read = 0, i_correct;
|
|
block_t *p_block;
|
|
|
|
if( p_sys->p_block_audio ) p_block = p_sys->p_block_audio;
|
|
else p_block = block_New( p_demux, p_sys->i_audio_max_frame_size );
|
|
|
|
if( !p_block )
|
|
{
|
|
msg_Warn( p_demux, "cannot get block" );
|
|
return 0;
|
|
}
|
|
|
|
p_sys->p_block_audio = p_block;
|
|
|
|
#ifdef HAVE_ALSA
|
|
if( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
|
|
{
|
|
/* ALSA */
|
|
i_read = snd_pcm_readi( p_sys->p_alsa_pcm, p_block->p_buffer, p_sys->i_alsa_chunk_size );
|
|
if( i_read <= 0 )
|
|
{
|
|
int i_resume;
|
|
switch( i_read )
|
|
{
|
|
case -EAGAIN:
|
|
break;
|
|
case -EPIPE:
|
|
/* xrun */
|
|
snd_pcm_prepare( p_sys->p_alsa_pcm );
|
|
break;
|
|
case -ESTRPIPE:
|
|
/* suspend */
|
|
i_resume = snd_pcm_resume( p_sys->p_alsa_pcm );
|
|
if( i_resume < 0 && i_resume != -EAGAIN ) snd_pcm_prepare( p_sys->p_alsa_pcm );
|
|
break;
|
|
default:
|
|
msg_Err( p_demux, "Failed to read alsa frame (%s)", snd_strerror( i_read ) );
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* convert from frames to bytes */
|
|
i_read *= p_sys->i_alsa_frame_size;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
if( p_sys->i_audio_method & AUDIO_METHOD_OSS )
|
|
{
|
|
/* OSS */
|
|
i_read = read( p_sys->i_fd_audio, p_block->p_buffer,
|
|
p_sys->i_audio_max_frame_size );
|
|
}
|
|
|
|
if( i_read <= 0 ) return 0;
|
|
|
|
p_block->i_buffer = i_read;
|
|
p_sys->p_block_audio = 0;
|
|
|
|
/* Correct the date because of kernel buffering */
|
|
i_correct = i_read;
|
|
if( p_sys->i_audio_method & AUDIO_METHOD_OSS )
|
|
{
|
|
/* OSS */
|
|
if( ioctl( p_sys->i_fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
|
|
{
|
|
i_correct += buf_info.bytes;
|
|
}
|
|
}
|
|
#ifdef HAVE_ALSA
|
|
else if( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
|
|
{
|
|
/* ALSA */
|
|
int i_err;
|
|
snd_pcm_sframes_t delay = 0;
|
|
if( ( i_err = snd_pcm_delay( p_sys->p_alsa_pcm, &delay ) ) >= 0 )
|
|
{
|
|
int i_correction_delta = delay * p_sys->i_alsa_frame_size;
|
|
/* Test for overrun */
|
|
if( i_correction_delta>p_sys->i_audio_max_frame_size )
|
|
{
|
|
msg_Warn( p_demux, "ALSA read overrun" );
|
|
i_correction_delta = p_sys->i_audio_max_frame_size;
|
|
snd_pcm_prepare( p_sys->p_alsa_pcm );
|
|
}
|
|
i_correct += i_correction_delta;
|
|
}
|
|
else
|
|
{
|
|
/* delay failed so reset */
|
|
msg_Warn( p_demux, "ALSA snd_pcm_delay failed (%s)", snd_strerror( i_err ) );
|
|
snd_pcm_prepare( p_sys->p_alsa_pcm );
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Timestamp */
|
|
p_block->i_pts = p_block->i_dts =
|
|
mdate() - I64C(1000000) * (mtime_t)i_correct /
|
|
2 / ( p_sys->b_stereo ? 2 : 1) / p_sys->i_sample_rate;
|
|
|
|
return p_block;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Helper function to initalise video IO using the Read method
|
|
*****************************************************************************/
|
|
static int InitRead( demux_t *p_demux, int i_fd, 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 )
|
|
{
|
|
msg_Err( p_demux, "Out of memory" );
|
|
goto open_failed;
|
|
}
|
|
|
|
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 )
|
|
{
|
|
msg_Err( p_demux, "Out of memory" );
|
|
goto open_failed;
|
|
}
|
|
|
|
return VLC_SUCCESS;
|
|
|
|
open_failed:
|
|
return VLC_EGENERIC;
|
|
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* 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( 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 )
|
|
{
|
|
msg_Err( p_demux, "Out of memory" );
|
|
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( 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 =
|
|
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 = getpagesize();
|
|
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( ioctl( i_fd, VIDIOC_REQBUFS, &req ) < 0 )
|
|
{
|
|
msg_Err( p_demux, "device does not support user pointer i/o" );
|
|
goto open_failed;
|
|
}
|
|
|
|
p_sys->p_buffers = calloc( 4, sizeof( *p_sys->p_buffers ) );
|
|
if( !p_sys->p_buffers )
|
|
{
|
|
msg_Err( p_demux, "Out of memory" );
|
|
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;
|
|
p_sys->p_buffers[p_sys->i_nbuffers].start =
|
|
vlc_memalign( &p_sys->p_buffers[p_sys->i_nbuffers].orig_userp,
|
|
/* boundary */ i_page_size, i_buffer_size );
|
|
|
|
if( !p_sys->p_buffers[p_sys->i_nbuffers].start )
|
|
{
|
|
msg_Err( p_demux, "out of memory" );
|
|
goto open_failed;
|
|
}
|
|
}
|
|
|
|
return VLC_SUCCESS;
|
|
|
|
open_failed:
|
|
return VLC_EGENERIC;
|
|
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* IsPixelFormatSupported: returns true if the specified V4L2 pixel format is
|
|
* in the array of supported formats returned by the driver
|
|
*****************************************************************************/
|
|
static vlc_bool_t 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 VLC_TRUE;
|
|
}
|
|
|
|
return VLC_FALSE;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* 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, vlc_bool_t 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;
|
|
char *psz_device = p_sys->psz_vdev;
|
|
|
|
if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
|
|
{
|
|
msg_Err( p_obj, "cannot open device (%m)" );
|
|
goto open_failed;
|
|
}
|
|
|
|
/* Select standard */
|
|
|
|
if( p_sys->i_selected_standard_id != V4L2_STD_UNKNOWN )
|
|
{
|
|
if( 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( ioctl( i_fd, VIDIOC_S_INPUT, &p_sys->i_selected_input ) < 0 )
|
|
{
|
|
msg_Err( p_obj, "cannot set input (%m)" );
|
|
goto open_failed;
|
|
}
|
|
|
|
/* 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 );
|
|
if( VLC_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( ioctl( i_fd, VIDIOC_CROPCAP, &cropcap ) >= 0 )
|
|
{
|
|
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
crop.c = cropcap.defrect; /* reset to default */
|
|
if( 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 )
|
|
{
|
|
if( 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
|
|
{
|
|
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 && 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 )
|
|
{
|
|
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YVU420;
|
|
if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 )
|
|
{
|
|
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
|
|
if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 )
|
|
{
|
|
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
|
|
if( !IsPixelFormatSupported( p_demux, fmt.fmt.pix.pixelformat ) || ioctl( i_fd, VIDIOC_S_FMT, &fmt ) < 0 )
|
|
{
|
|
msg_Warn( p_demux, "Could not select any of the default chromas; attempting to open as MPEG encoder card (access2)" );
|
|
goto open_failed;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
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( ioctl( i_fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival ) >= 0 )
|
|
{
|
|
char sz_fourcc[5];
|
|
memset( &sz_fourcc, 0, sizeof( sz_fourcc ) );
|
|
vlc_fourcc_to_char( p_sys->i_fourcc, &sz_fourcc );
|
|
msg_Dbg( p_demux, "supported frame intervals for %4s, %dx%d:",
|
|
sz_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( 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, i_fd, 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_format_t es_fmt;
|
|
es_format_Init( &es_fmt, VIDEO_ES, p_sys->i_fourcc );
|
|
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;
|
|
|
|
/* Setup rgb mask for RGB formats */
|
|
if( p_sys->i_fourcc == VLC_FOURCC( 'R','V','2','4' ) )
|
|
{
|
|
/* This is in BGR format */
|
|
es_fmt.video.i_bmask = 0x00ff0000;
|
|
es_fmt.video.i_gmask = 0x0000ff00;
|
|
es_fmt.video.i_rmask = 0x000000ff;
|
|
}
|
|
|
|
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_video = 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( 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( 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( 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( 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 ) close( i_fd );
|
|
return -1;
|
|
|
|
}
|
|
|
|
#ifdef HAVE_ALSA
|
|
/*****************************************************************************
|
|
* ResolveALSADeviceName: Change any . to : in the ALSA device name
|
|
*****************************************************************************/
|
|
static char *ResolveALSADeviceName( const char *psz_device )
|
|
{
|
|
char* psz_alsa_name = strdup( psz_device );
|
|
for( unsigned int i = 0; i < strlen( psz_device ); i++ )
|
|
{
|
|
if( psz_alsa_name[i] == '.' ) psz_alsa_name[i] = ':';
|
|
}
|
|
return psz_alsa_name;
|
|
}
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* OpenAudioDev: open and set up the audio device and probe for capabilities
|
|
*****************************************************************************/
|
|
#ifdef HAVE_ALSA
|
|
static int OpenAudioDevAlsa( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
vlc_bool_t b_demux )
|
|
{
|
|
char *psz_device = p_sys->psz_adev;
|
|
int i_fd = 0;
|
|
p_sys->p_alsa_pcm = NULL;
|
|
char* psz_alsa_device_name = NULL;
|
|
snd_pcm_hw_params_t *p_hw_params = NULL;
|
|
snd_pcm_uframes_t buffer_size;
|
|
snd_pcm_uframes_t chunk_size;
|
|
|
|
/* ALSA */
|
|
int i_err;
|
|
psz_alsa_device_name =
|
|
ResolveALSADeviceName( psz_device?: ALSA_DEFAULT );
|
|
|
|
if( ( i_err = snd_pcm_open( &p_sys->p_alsa_pcm, psz_alsa_device_name,
|
|
SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0)
|
|
{
|
|
msg_Err( p_this, "Cannot open ALSA audio device %s (%s)",
|
|
psz_alsa_device_name, snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
if( ( i_err = snd_pcm_nonblock( p_sys->p_alsa_pcm, 1 ) ) < 0)
|
|
{
|
|
msg_Err( p_this, "Cannot set ALSA nonblock (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Begin setting hardware parameters */
|
|
|
|
if( ( i_err = snd_pcm_hw_params_malloc( &p_hw_params ) ) < 0 )
|
|
{
|
|
msg_Err( p_this,
|
|
"ALSA: cannot allocate hardware parameter structure (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
if( ( i_err = snd_pcm_hw_params_any( p_sys->p_alsa_pcm, p_hw_params ) ) < 0 )
|
|
{
|
|
msg_Err( p_this,
|
|
"ALSA: cannot initialize hardware parameter structure (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Set Interleaved access */
|
|
if( ( i_err = snd_pcm_hw_params_set_access( p_sys->p_alsa_pcm, p_hw_params, SND_PCM_ACCESS_RW_INTERLEAVED ) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set access type (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Set 16 bit little endian */
|
|
if( ( i_err = snd_pcm_hw_params_set_format( p_sys->p_alsa_pcm, p_hw_params, SND_PCM_FORMAT_S16_LE ) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set sample format (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Set sample rate */
|
|
#ifdef HAVE_ALSA_NEW_API
|
|
i_err = snd_pcm_hw_params_set_rate_near( p_sys->p_alsa_pcm, p_hw_params, &p_sys->i_sample_rate, NULL );
|
|
#else
|
|
i_err = snd_pcm_hw_params_set_rate_near( p_sys->p_alsa_pcm, p_hw_params, p_sys->i_sample_rate, NULL );
|
|
#endif
|
|
if( i_err < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set sample rate (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Set channels */
|
|
unsigned int channels = p_sys->b_stereo ? 2 : 1;
|
|
if( ( i_err = snd_pcm_hw_params_set_channels( p_sys->p_alsa_pcm, p_hw_params, channels ) ) < 0 )
|
|
{
|
|
channels = ( channels==1 ) ? 2 : 1;
|
|
msg_Warn( p_this, "ALSA: cannot set channel count (%s). "
|
|
"Trying with channels=%d",
|
|
snd_strerror( i_err ),
|
|
channels );
|
|
if( ( i_err = snd_pcm_hw_params_set_channels( p_sys->p_alsa_pcm, p_hw_params, channels ) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set channel count (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
p_sys->b_stereo = ( channels == 2 );
|
|
}
|
|
|
|
/* Set metrics for buffer calculations later */
|
|
unsigned int buffer_time;
|
|
if( ( i_err = snd_pcm_hw_params_get_buffer_time_max(p_hw_params, &buffer_time, 0) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot get buffer time max (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
if (buffer_time > 500000) buffer_time = 500000;
|
|
|
|
/* Set period time */
|
|
unsigned int period_time = buffer_time / 4;
|
|
#ifdef HAVE_ALSA_NEW_API
|
|
i_err = snd_pcm_hw_params_set_period_time_near( p_sys->p_alsa_pcm, p_hw_params, &period_time, 0 );
|
|
#else
|
|
i_err = snd_pcm_hw_params_set_period_time_near( p_sys->p_alsa_pcm, p_hw_params, period_time, 0 );
|
|
#endif
|
|
if( i_err < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set period time (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Set buffer time */
|
|
#ifdef HAVE_ALSA_NEW_API
|
|
i_err = snd_pcm_hw_params_set_buffer_time_near( p_sys->p_alsa_pcm, p_hw_params, &buffer_time, 0 );
|
|
#else
|
|
i_err = snd_pcm_hw_params_set_buffer_time_near( p_sys->p_alsa_pcm, p_hw_params, buffer_time, 0 );
|
|
#endif
|
|
if( i_err < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set buffer time (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Apply new hardware parameters */
|
|
if( ( i_err = snd_pcm_hw_params( p_sys->p_alsa_pcm, p_hw_params ) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "ALSA: cannot set hw parameters (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Get various buffer metrics */
|
|
snd_pcm_hw_params_get_period_size( p_hw_params, &chunk_size, 0 );
|
|
snd_pcm_hw_params_get_buffer_size( p_hw_params, &buffer_size );
|
|
if (chunk_size == buffer_size)
|
|
{
|
|
msg_Err( p_this,
|
|
"ALSA: period cannot equal buffer size (%lu == %lu)",
|
|
chunk_size, buffer_size);
|
|
goto adev_fail;
|
|
}
|
|
|
|
int bits_per_sample = snd_pcm_format_physical_width(SND_PCM_FORMAT_S16_LE);
|
|
int bits_per_frame = bits_per_sample * channels;
|
|
|
|
p_sys->i_alsa_chunk_size = chunk_size;
|
|
p_sys->i_alsa_frame_size = (bits_per_sample / 8) * channels;
|
|
p_sys->i_audio_max_frame_size = chunk_size * bits_per_frame / 8;
|
|
|
|
snd_pcm_hw_params_free( p_hw_params );
|
|
p_hw_params = NULL;
|
|
|
|
/* Prep device */
|
|
if( ( i_err = snd_pcm_prepare( p_sys->p_alsa_pcm ) ) < 0 )
|
|
{
|
|
msg_Err( p_this,
|
|
"ALSA: cannot prepare audio interface for use (%s)",
|
|
snd_strerror( i_err ) );
|
|
goto adev_fail;
|
|
}
|
|
|
|
/* Return a fake handle so other tests work */
|
|
i_fd = 1;
|
|
|
|
free( psz_alsa_device_name );
|
|
|
|
if( !p_sys->psz_adev )
|
|
p_sys->psz_adev = strdup( ALSA_DEFAULT );
|
|
return i_fd;
|
|
|
|
adev_fail:
|
|
|
|
if( i_fd >= 0 ) close( i_fd );
|
|
|
|
if( p_hw_params ) snd_pcm_hw_params_free( p_hw_params );
|
|
if( p_sys->p_alsa_pcm ) snd_pcm_close( p_sys->p_alsa_pcm );
|
|
free( psz_alsa_device_name );
|
|
|
|
return -1;
|
|
|
|
}
|
|
#endif
|
|
|
|
static int OpenAudioDevOss( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
vlc_bool_t b_demux )
|
|
{
|
|
char *psz_device = p_sys->psz_adev;
|
|
int i_fd = 0;
|
|
int i_format;
|
|
/* OSS */
|
|
if( !psz_device ) psz_device = strdup( OSS_DEFAULT ); /* FIXME leak */
|
|
|
|
if( (i_fd = open( psz_device, O_RDONLY | O_NONBLOCK )) < 0 )
|
|
{
|
|
msg_Err( p_this, "cannot open OSS audio device (%m)" );
|
|
goto adev_fail;
|
|
}
|
|
|
|
i_format = AFMT_S16_LE;
|
|
if( ioctl( i_fd, SNDCTL_DSP_SETFMT, &i_format ) < 0
|
|
|| i_format != AFMT_S16_LE )
|
|
{
|
|
msg_Err( p_this,
|
|
"cannot set audio format (16b little endian) (%m)" );
|
|
goto adev_fail;
|
|
}
|
|
|
|
if( ioctl( i_fd, SNDCTL_DSP_STEREO,
|
|
&p_sys->b_stereo ) < 0 )
|
|
{
|
|
msg_Err( p_this, "cannot set audio channels count (%m)" );
|
|
goto adev_fail;
|
|
}
|
|
|
|
if( ioctl( i_fd, SNDCTL_DSP_SPEED,
|
|
&p_sys->i_sample_rate ) < 0 )
|
|
{
|
|
msg_Err( p_this, "cannot set audio sample rate (%m)" );
|
|
goto adev_fail;
|
|
}
|
|
|
|
p_sys->i_audio_max_frame_size = 6 * 1024;
|
|
|
|
if( !p_sys->psz_adev )
|
|
p_sys->psz_adev = strdup( OSS_DEFAULT );
|
|
return i_fd;
|
|
|
|
adev_fail:
|
|
|
|
if( i_fd >= 0 ) close( i_fd );
|
|
return -1;
|
|
|
|
}
|
|
|
|
static int OpenAudioDev( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
vlc_bool_t b_demux )
|
|
{
|
|
char *psz_device;
|
|
int i_fd = -1;
|
|
|
|
#ifdef HAVE_ALSA
|
|
if( ( p_sys->i_audio_method & AUDIO_METHOD_ALSA ) && i_fd < 0 )
|
|
i_fd = OpenAudioDevAlsa( p_this, p_sys, b_demux );
|
|
#endif
|
|
|
|
if( ( p_sys->i_audio_method & AUDIO_METHOD_OSS ) && i_fd < 0 )
|
|
i_fd = OpenAudioDevOss( p_this, p_sys, b_demux );
|
|
|
|
if( i_fd < 0 )
|
|
return i_fd;
|
|
|
|
psz_device = p_sys->psz_adev;
|
|
|
|
msg_Dbg( p_this, "opened adev=`%s' %s %dHz",
|
|
psz_device, p_sys->b_stereo ? "stereo" : "mono",
|
|
p_sys->i_sample_rate );
|
|
|
|
es_format_t fmt;
|
|
es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('a','r','a','w') );
|
|
|
|
fmt.audio.i_channels = p_sys->b_stereo ? 2 : 1;
|
|
fmt.audio.i_rate = p_sys->i_sample_rate;
|
|
fmt.audio.i_bitspersample = 16;
|
|
fmt.audio.i_blockalign = fmt.audio.i_channels * fmt.audio.i_bitspersample / 8;
|
|
fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate * fmt.audio.i_bitspersample;
|
|
|
|
msg_Dbg( p_this, "new audio es %d channels %dHz",
|
|
fmt.audio.i_channels, fmt.audio.i_rate );
|
|
|
|
if( b_demux )
|
|
{
|
|
demux_t *p_demux = (demux_t *)p_this;
|
|
p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
|
|
}
|
|
|
|
return i_fd;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* ProbeVideoDev: probe video for capabilities
|
|
*****************************************************************************/
|
|
static vlc_bool_t ProbeVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys,
|
|
char *psz_device )
|
|
{
|
|
int i_index;
|
|
int i_standard;
|
|
|
|
int i_fd;
|
|
|
|
if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
|
|
{
|
|
msg_Err( p_obj, "cannot open video device (%m)" );
|
|
goto open_failed;
|
|
}
|
|
|
|
/* Get device capabilites */
|
|
|
|
if( 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( 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( 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",
|
|
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" );
|
|
}
|
|
}
|
|
|
|
/* Probe video standards */
|
|
if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
|
|
{
|
|
struct v4l2_standard t_standards;
|
|
t_standards.index = 0;
|
|
while( 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( 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",
|
|
i_standard,
|
|
p_sys->p_standards[i_standard].name);
|
|
}
|
|
}
|
|
|
|
/* 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 &&
|
|
ioctl( i_fd, VIDIOC_S_AUDIO, &p_sys->p_audios[p_sys->i_audio] ) >= 0 )
|
|
{
|
|
if( 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 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" );
|
|
|
|
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( 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( 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" );
|
|
}
|
|
}
|
|
|
|
/* 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( 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( 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 */
|
|
vlc_bool_t b_codec_supported = VLC_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 = VLC_TRUE;
|
|
|
|
char sz_fourcc[5];
|
|
memset( &sz_fourcc, 0, sizeof( sz_fourcc ) );
|
|
vlc_fourcc_to_char( v4l2chroma_to_fourcc[i].i_fourcc, &sz_fourcc );
|
|
msg_Dbg( p_obj, "device supports chroma %4s [%s]",
|
|
sz_fourcc,
|
|
p_sys->p_codecs[i_index].description );
|
|
|
|
#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( 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( 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 %s not supported as access_demux",
|
|
p_sys->p_codecs[i_index].description );
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|
|
if( i_fd >= 0 ) close( i_fd );
|
|
return VLC_TRUE;
|
|
|
|
open_failed:
|
|
|
|
if( i_fd >= 0 ) close( i_fd );
|
|
return VLC_FALSE;
|
|
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* ProbeAudioDev: probe audio for capabilities
|
|
*****************************************************************************/
|
|
#ifdef HAVE_ALSA
|
|
static vlc_bool_t ProbeAudioDevAlsa( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
char *psz_device )
|
|
{
|
|
int i_err;
|
|
snd_pcm_t *p_alsa_pcm;
|
|
char* psz_alsa_device_name = ResolveALSADeviceName( psz_device ?: ALSA_DEFAULT );
|
|
|
|
if( ( i_err = snd_pcm_open( &p_alsa_pcm, psz_alsa_device_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK ) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "cannot open device %s for ALSA audio (%s)", psz_alsa_device_name, snd_strerror( i_err ) );
|
|
free( psz_alsa_device_name );
|
|
return VLC_FALSE;
|
|
}
|
|
|
|
snd_pcm_close( p_alsa_pcm );
|
|
free( psz_alsa_device_name );
|
|
|
|
return VLC_TRUE;
|
|
}
|
|
#endif
|
|
|
|
static vlc_bool_t ProbeAudioDevOss( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
char *psz_device )
|
|
{
|
|
int i_fd = 0;
|
|
int i_caps;
|
|
if( !psz_device ) psz_device = strdup( OSS_DEFAULT ); /* FIXME leak */
|
|
|
|
if( ( i_fd = open( psz_device, O_RDONLY | O_NONBLOCK ) ) < 0 )
|
|
{
|
|
msg_Err( p_this, "cannot open device %s for OSS audio (%m)", psz_device );
|
|
goto open_failed;
|
|
}
|
|
|
|
/* this will fail if the device is video */
|
|
if( ioctl( i_fd, SNDCTL_DSP_GETCAPS, &i_caps ) < 0 )
|
|
{
|
|
msg_Err( p_this, "cannot get audio caps (%m)" );
|
|
goto open_failed;
|
|
}
|
|
|
|
if( i_fd >= 0 ) close( i_fd );
|
|
|
|
return VLC_TRUE;
|
|
|
|
open_failed:
|
|
if( i_fd >= 0 ) close( i_fd );
|
|
return VLC_FALSE;
|
|
}
|
|
|
|
static vlc_bool_t ProbeAudioDev( vlc_object_t *p_this, demux_sys_t *p_sys,
|
|
char *psz_device )
|
|
{
|
|
#ifdef HAVE_ALSA
|
|
if( ( p_sys->i_audio_method & AUDIO_METHOD_ALSA )
|
|
&& ProbeAudioDevAlsa( p_this, p_sys, psz_device ) )
|
|
{
|
|
p_sys->i_audio_method = AUDIO_METHOD_ALSA;
|
|
return VLC_TRUE;
|
|
}
|
|
#endif
|
|
|
|
if( ( p_sys->i_audio_method & AUDIO_METHOD_OSS )
|
|
&& ProbeAudioDevOss( p_this, p_sys, psz_device ) )
|
|
{
|
|
p_sys->i_audio_method = AUDIO_METHOD_OSS;
|
|
return VLC_TRUE;
|
|
}
|
|
|
|
p_sys->i_audio_method = 0;
|
|
return VLC_FALSE;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* 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,
|
|
vlc_bool_t b_reset, vlc_bool_t 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
|
|
{
|
|
char *psz_buf;
|
|
psz_name = strdup( (const char *)queryctrl.name );
|
|
for( psz_buf = psz_name; *psz_buf; psz_buf++ )
|
|
{
|
|
if( *psz_buf == ' ' ) *psz_buf = '-';
|
|
}
|
|
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( 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;
|
|
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( 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, "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*)queryctrl.id );
|
|
else
|
|
var_AddCallback( p_obj, psz_name,
|
|
AccessControlCallback, (void*)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,
|
|
vlc_bool_t b_reset, vlc_bool_t 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 "controls" variable. We'll thus be able
|
|
* to use those to create an appropriate interface */
|
|
var_Create( p_obj, "controls", 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 );
|
|
|
|
/* List public controls */
|
|
for( i_cid = V4L2_CID_BASE;
|
|
i_cid < V4L2_CID_LASTP1;
|
|
i_cid ++ )
|
|
{
|
|
queryctrl.id = i_cid;
|
|
if( 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( 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;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* 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 ) );
|
|
|
|
/* public controls */
|
|
for( i_cid = V4L2_CID_BASE;
|
|
i_cid < V4L2_CID_LASTP1;
|
|
i_cid ++ )
|
|
{
|
|
queryctrl.id = i_cid;
|
|
if( 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( 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;
|
|
Control( p_obj, i_fd,
|
|
controls[i].psz_name ? 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( 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( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
|
|
&& queryctrl.default_value != control.value )
|
|
{
|
|
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;
|
|
|
|
if( i_value == -1 )
|
|
return VLC_SUCCESS;
|
|
|
|
memset( &queryctrl, 0, sizeof( queryctrl ) );
|
|
|
|
queryctrl.id = i_cid;
|
|
|
|
if( 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 ) );
|
|
control.id = i_cid;
|
|
|
|
if( i_value >= 0 )
|
|
{
|
|
control.value = i_value;
|
|
if( ioctl( i_fd, VIDIOC_S_CTRL, &control ) < 0 )
|
|
{
|
|
msg_Err( p_obj, "unable to set %s to %d (%m)", psz_name,
|
|
i_value );
|
|
return VLC_EGENERIC;
|
|
}
|
|
}
|
|
if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 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 )
|
|
{
|
|
demux_t *p_demux = (demux_t*)p_this;
|
|
demux_sys_t *p_sys = p_demux->p_sys;
|
|
int i_cid = (int)p_data;
|
|
|
|
int i_fd = p_sys->i_fd_video;
|
|
|
|
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 )
|
|
{
|
|
demux_t *p_demux = (demux_t*)p_this;
|
|
demux_sys_t *p_sys = p_demux->p_sys;
|
|
|
|
int i_fd = p_sys->i_fd_video;
|
|
|
|
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 )
|
|
{
|
|
access_t *p_access = (access_t *)p_this;
|
|
demux_sys_t *p_sys = (demux_sys_t *) p_access->p_sys;
|
|
int i_cid = (int)p_data;
|
|
|
|
int i_fd = p_sys->i_fd_video;
|
|
|
|
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 )
|
|
{
|
|
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_video;
|
|
|
|
if( i_fd < 0 )
|
|
return VLC_EGENERIC;
|
|
|
|
ControlReset( p_this, i_fd );
|
|
|
|
return VLC_EGENERIC;
|
|
}
|