* v4l.c : Video4Linux input module for vlc
*****************************************************************************
* Copyright (C) 2002 VideoLAN
- * $Id: v4l.c,v 1.1 2002/08/08 00:35:10 sam Exp $
+ * $Id: v4l.c,v 1.36 2003/12/04 16:49:43 sam Exp $
*
- * Author: Samuel Hocevar <sam@zoy.org>
+ * Author: Laurent Aimar <fenrir@via.ecp.fr>
+ * Paul Forgey <paulf at aphrodite dot com>
+ * Gildas Bazin <gbazin@netcourrier.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/*****************************************************************************
* Preamble
*****************************************************************************/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
#include <vlc/vlc.h>
#include <vlc/input.h>
+#include <vlc/vout.h>
+#include <codecs.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <errno.h>
#include <fcntl.h>
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int V4lOpen ( vlc_object_t * );
-static void V4lClose ( vlc_object_t * );
-static int V4lRead ( input_thread_t *, byte_t *, size_t );
+/* From GStreamer's v4l plugin:
+ * Because of some really cool feature in video4linux1, also known as
+ * 'not including sys/types.h and sys/time.h', we had to include it
+ * ourselves. In all their intelligence, these people decided to fix
+ * this in the next version (video4linux2) in such a cool way that it
+ * breaks all compilations of old stuff...
+ * The real problem is actually that linux/time.h doesn't use proper
+ * macro checks before defining types like struct timeval. The proper
+ * fix here is to either fuck the kernel header (which is what we do
+ * by defining _LINUX_TIME_H, an innocent little hack) or by fixing it
+ * upstream, which I'll consider doing later on. If you get compiler
+ * errors here, check your linux/time.h && sys/time.h header setup.
+*/
+#define _LINUX_TIME_H
+
+#include <linux/videodev.h>
+#include "videodev_mjpeg.h"
+
+#include <sys/soundcard.h>
/*****************************************************************************
* Module descriptior
*****************************************************************************/
+static int AccessOpen ( vlc_object_t * );
+static void AccessClose( vlc_object_t * );
+
+static int DemuxOpen ( vlc_object_t * );
+static void DemuxClose ( vlc_object_t * );
+
+#define CACHING_TEXT N_("Caching value in ms")
+#define CACHING_LONGTEXT N_( \
+ "Allows you to modify the default caching value for v4l streams. This " \
+ "value should be set in miliseconds units." )
+#define VDEV_TEXT N_("Video device name")
+#define VDEV_LONGTEXT N_( \
+ "Specify the name of the video device that will be used. " \
+ "If you don't specify anything, no video device will be used.")
+#define ADEV_TEXT N_("Audio device name")
+#define ADEV_LONGTEXT N_( \
+ "Specify the name of the audio device that will be used. " \
+ "If you don't specify anything, no audio device will be used.")
+#define CHROMA_TEXT N_("Video input chroma format")
+#define CHROMA_LONGTEXT N_( \
+ "Force the Video4Linux video device to use a specific chroma format " \
+ "(eg. I420 (default), RV24, etc.)")
+
vlc_module_begin();
- set_description( _("Video4Linux input module") );
- set_capability( "access", 80 );
- set_callbacks( V4lOpen, V4lClose );
+ set_description( _("Video4Linux input") );
+ add_category_hint( N_("v4l"), NULL, VLC_TRUE );
+ add_integer( "v4l-caching", DEFAULT_PTS_DELAY / 1000, NULL,
+ CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
+ add_shortcut( "v4l" );
+ set_capability( "access", 10 );
+ set_callbacks( AccessOpen, AccessClose );
+
+ add_string( "v4l-vdev", "/dev/video", 0, VDEV_TEXT, VDEV_LONGTEXT,
+ VLC_FALSE );
+ add_string( "v4l-adev", "/dev/dsp", 0, ADEV_TEXT, ADEV_LONGTEXT,
+ VLC_FALSE );
+ add_string( "v4l-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
+ VLC_TRUE );
+
+ add_submodule();
+ set_description( _("Video4Linux demuxer") );
+ add_shortcut( "v4l" );
+ set_capability( "demux", 200 );
+ set_callbacks( DemuxOpen, DemuxClose );
vlc_module_end();
-static int i_fd;
/*****************************************************************************
- * V4lOpen: open device
+ * Access: local prototypes
*****************************************************************************/
-static int V4lOpen( vlc_object_t *p_this )
-{
- input_thread_t * p_input = (input_thread_t *)p_this;
+static int Read ( input_thread_t *, byte_t *, size_t );
+
+static void ParseMRL ( input_thread_t * );
+static int OpenVideoDev( input_thread_t *, char * );
+static int OpenAudioDev( input_thread_t *, char * );
+
+#define MJPEG_BUFFER_SIZE (256*1024)
+
+struct quicktime_mjpeg_app1
+{
+ uint32_t i_reserved; /* set to 0 */
+ uint32_t i_tag; /* 'mjpg' */
+ uint32_t i_field_size; /* offset following EOI */
+ uint32_t i_padded_field_size; /* offset following EOI+pad */
+ uint32_t i_next_field; /* offset to next field */
+ uint32_t i_DQT_offset;
+ uint32_t i_DHT_offset;
+ uint32_t i_SOF_offset;
+ uint32_t i_SOS_offset;
+ uint32_t i_data_offset; /* following SOS marker data */
+};
+
+static struct
+{
+ int i_v4l;
+ int i_fourcc;
+
+} v4lchroma_to_fourcc[] =
+{
+ { VIDEO_PALETTE_GREY, VLC_FOURCC( 'G', 'R', 'E', 'Y' ) },
+ { VIDEO_PALETTE_HI240, VLC_FOURCC( 'I', '2', '4', '0' ) },
+ { VIDEO_PALETTE_RGB565, VLC_FOURCC( 'R', 'V', '1', '6' ) },
+ { VIDEO_PALETTE_RGB555, VLC_FOURCC( 'R', 'V', '1', '5' ) },
+ { VIDEO_PALETTE_RGB24, VLC_FOURCC( 'R', 'V', '2', '4' ) },
+ { VIDEO_PALETTE_RGB32, VLC_FOURCC( 'R', 'V', '3', '2' ) },
+ { VIDEO_PALETTE_YUV422, VLC_FOURCC( 'I', '4', '2', '2' ) },
+ { VIDEO_PALETTE_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', 'V' ) },
+ { VIDEO_PALETTE_UYVY, VLC_FOURCC( 'U', 'Y', 'V', 'Y' ) },
+ { VIDEO_PALETTE_YUV420, VLC_FOURCC( 'I', '4', '2', 'N' ) },
+ { VIDEO_PALETTE_YUV411, VLC_FOURCC( 'I', '4', '1', 'N' ) },
+ { VIDEO_PALETTE_RAW, VLC_FOURCC( 'G', 'R', 'A', 'W' ) },
+ { VIDEO_PALETTE_YUV422P, VLC_FOURCC( 'I', '4', '2', '2' ) },
+ { VIDEO_PALETTE_YUV420P, VLC_FOURCC( 'I', '4', '2', '0' ) },
+ { VIDEO_PALETTE_YUV411P, VLC_FOURCC( 'I', '4', '1', '1' ) },
+ { 0, 0 }
+};
+
+struct access_sys_t
+{
+ /* Devices */
+ char *psz_device; /* Main device from MRL, can be video or audio */
+
+ char *psz_vdev;
+ int fd_video;
+
+ char *psz_adev;
+ int fd_audio;
+
+ /* Video properties */
+ picture_t pic;
+
+ int i_fourcc;
+ int i_channel;
+ int i_audio;
+ int i_norm;
+ int i_tuner;
+ int i_frequency;
+ int i_width;
+ int i_height;
+
+ float f_fps; /* <= 0.0 mean to grab at full rate */
+ mtime_t i_video_pts; /* only used when f_fps > 0 */
+
+ vlc_bool_t b_mjpeg;
+ int i_decimation;
+ int i_quality;
+
+ struct video_capability vid_cap;
+ struct video_mbuf vid_mbuf;
+ struct mjpeg_requestbuffers mjpeg_buffers;
+
+ uint8_t *p_video_mmap;
+ int i_frame_pos;
+
+ struct video_mmap vid_mmap;
+ struct video_picture vid_picture;
+
+ uint8_t *p_video_frame;
+ int i_video_frame_size;
+ int i_video_frame_size_allocated;
+
+ /* Audio properties */
+ vlc_fourcc_t i_acodec_raw;
+ int i_sample_rate;
+ vlc_bool_t b_stereo;
+
+ uint8_t *p_audio_frame;
+ int i_audio_frame_size;
+ int i_audio_frame_size_allocated;
+
+ /* header */
+ int i_streams;
+ int i_header_size;
+ int i_header_pos;
+ uint8_t *p_header; // at lest 8 bytes allocated
+
+ /* data */
+ int i_data_size;
+ int i_data_pos;
+ uint8_t *p_data; // never allocated
+
+};
+
+/*
+ * header:
+ * fcc ".v4l"
+ * u32 stream count
+ * fcc "auds"|"vids" 0
+ * fcc codec 4
+ * if vids
+ * u32 width 8
+ * u32 height 12
+ * u32 padding 16
+ * if auds
+ * u32 channels 12
+ * u32 samplerate 8
+ * u32 samplesize 16
+ *
+ * data:
+ * u32 stream number
+ * u32 data size
+ * u8 data
+ */
+
+static void SetDWBE( uint8_t *p, uint32_t dw )
+{
+ p[0] = (dw >> 24)&0xff;
+ p[1] = (dw >> 16)&0xff;
+ p[2] = (dw >> 8)&0xff;
+ p[3] = (dw )&0xff;
+}
+
+static void SetQWBE( uint8_t *p, uint64_t qw )
+{
+ SetDWBE( p, (qw >> 32)&0xffffffff );
+ SetDWBE( &p[4], qw&0xffffffff);
+}
+
+/*****************************************************************************
+ * AccessOpen: opens v4l device
+ *****************************************************************************
+ *
+ * url: <video device>::::
+ *
+ *****************************************************************************/
+static int AccessOpen( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ access_sys_t *p_sys;
+ vlc_value_t val;
+
+ /* create access private data */
+ p_input->p_access_data = p_sys = malloc( sizeof( access_sys_t ) );
+ memset( p_sys, 0, sizeof( access_sys_t ) );
+
+ p_sys->i_audio = -1;
+ p_sys->i_norm = VIDEO_MODE_AUTO; // auto
+ p_sys->i_tuner = -1;
+ p_sys->i_frequency = -1;
+
+ p_sys->f_fps = -1.0;
+ p_sys->i_video_pts = -1;
+
+ p_sys->b_mjpeg = VLC_FALSE;
+ p_sys->i_decimation = 1;
+ p_sys->i_quality = 100;
- p_input->pf_read = V4lRead;
- p_input->pf_seek = NULL;
- p_input->pf_set_area = NULL;
+ p_sys->i_video_frame_size_allocated = 0;
+ p_sys->i_frame_pos = 0;
+
+ p_sys->p_audio_frame = 0;
+ p_sys->i_sample_rate = 44100;
+ p_sys->b_stereo = VLC_TRUE;
+
+ p_sys->p_header = NULL;
+ p_sys->i_data_size = 0;
+ p_sys->i_data_pos = 0;
+ p_sys->p_data = NULL;
+
+ p_sys->psz_device = p_sys->psz_vdev = p_sys->psz_adev = NULL;
+ p_sys->fd_video = -1;
+ p_sys->fd_audio = -1;
+
+ ParseMRL( p_input );
+
+ /* Find main device (video or audio) */
+ if( p_sys->psz_device && *p_sys->psz_device )
+ {
+ msg_Dbg( p_input, "main device=`%s'", p_sys->psz_device );
+
+ /* Try to open as video device */
+ p_sys->fd_video = OpenVideoDev( p_input, p_sys->psz_device );
+
+ if( p_sys->fd_video < 0 )
+ {
+ /* Try to open as audio device */
+ p_sys->fd_audio = OpenAudioDev( p_input, p_sys->psz_device );
+ if( p_sys->fd_audio >= 0 )
+ {
+ if( p_sys->psz_adev ) free( p_sys->psz_adev );
+ p_sys->psz_adev = p_sys->psz_device;
+ p_sys->psz_device = NULL;
+ }
+ }
+ else
+ {
+ if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
+ p_sys->psz_vdev = p_sys->psz_device;
+ p_sys->psz_device = NULL;
+ }
+ }
+
+ /* If no device opened, only continue if the access was forced */
+ if( p_sys->fd_video < 0 && p_sys->fd_audio < 0 )
+ {
+ if( !p_input->psz_access ||
+ strcmp( p_input->psz_access, "v4l" ) )
+ {
+ AccessClose( p_this );
+ return VLC_EGENERIC;
+ }
+ }
+
+ /* Find video device */
+ if( p_sys->fd_video < 0 )
+ {
+ if( !p_sys->psz_vdev || !*p_sys->psz_vdev )
+ {
+ var_Create( p_input, "v4l-vdev",
+ VLC_VAR_STRING | VLC_VAR_DOINHERIT );
+ var_Get( p_input, "v4l-vdev", &val );
+
+ if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
+ p_sys->psz_vdev = val.psz_string;
+ }
+
+ if( p_sys->psz_vdev && *p_sys->psz_vdev )
+ {
+ p_sys->fd_video = OpenVideoDev( p_input, p_sys->psz_vdev );
+ }
+ }
+
+ /* Find audio device */
+ if( p_sys->fd_audio < 0 )
+ {
+ if( !p_sys->psz_adev || !*p_sys->psz_adev )
+ {
+ var_Create( p_input, "v4l-adev",
+ VLC_VAR_STRING | VLC_VAR_DOINHERIT );
+ var_Get( p_input, "v4l-adev", &val );
+
+ if( p_sys->psz_adev ) free( p_sys->psz_adev );
+ p_sys->psz_adev = val.psz_string;
+ }
+
+ if( p_sys->psz_adev && *p_sys->psz_adev )
+ {
+ p_sys->fd_audio = OpenAudioDev( p_input, p_sys->psz_adev );
+ }
+ }
+
+ if( p_sys->fd_video < 0 && p_sys->fd_audio < 0 )
+ {
+ AccessClose( p_this );
+ return VLC_EGENERIC;
+ }
+
+ p_input->pf_read = Read;
+ p_input->pf_seek = NULL;
+ p_input->pf_set_area = NULL;
p_input->pf_set_program = NULL;
vlc_mutex_lock( &p_input->stream.stream_lock );
p_input->stream.i_method = INPUT_METHOD_FILE;
vlc_mutex_unlock( &p_input->stream.stream_lock );
- i_fd = open( "/dev/v4l/video0", O_RDWR );
+ /* Update default_pts to a suitable value for access */
+ var_Create( p_input, "v4l-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
+ var_Get( p_input, "v4l-caching", &val );
+ p_input->i_pts_delay = val.i_int * 1000;
+
+ msg_Info( p_input, "v4l grabbing started" );
+
+ /* create header */
+ p_sys->i_streams = 0;
+ p_sys->i_header_size = 8;
+ p_sys->i_header_pos = 8;
+ p_sys->p_header = malloc( p_sys->i_header_size );
+
+ memcpy( p_sys->p_header, ".v4l", 4 );
+
+ if( p_sys->fd_video >= 0 )
+ {
+ p_sys->i_header_size += 20;
+ p_sys->p_header = realloc( p_sys->p_header, p_sys->i_header_size );
+
+ SetDWBE( &p_sys->p_header[4], ++p_sys->i_streams );
+
+ memcpy( &p_sys->p_header[p_sys->i_header_pos], "vids", 4 );
+ memcpy( &p_sys->p_header[p_sys->i_header_pos+4],
+ &p_sys->i_fourcc, 4 );
+ SetDWBE( &p_sys->p_header[p_sys->i_header_pos+8], p_sys->i_width );
+ SetDWBE( &p_sys->p_header[p_sys->i_header_pos+12], p_sys->i_height );
+ SetDWBE( &p_sys->p_header[p_sys->i_header_pos+16], 0 );
+
+ p_sys->i_header_pos = p_sys->i_header_size;
+ }
+
+ if( p_sys->fd_audio >= 0 )
+ {
+ p_sys->i_header_size += 20;
+ p_sys->p_header = realloc( p_sys->p_header, p_sys->i_header_size );
+
+ SetDWBE( &p_sys->p_header[4], ++p_sys->i_streams );
+
+ memcpy( &p_sys->p_header[p_sys->i_header_pos], "auds", 4 );
+ memcpy( &p_sys->p_header[p_sys->i_header_pos+4], "araw", 4 );
+ SetDWBE( &p_sys->p_header[p_sys->i_header_pos+8],
+ p_sys->b_stereo ? 2 : 1 );
+ SetDWBE( &p_sys->p_header[p_sys->i_header_pos+12],
+ p_sys->i_sample_rate );
+ SetDWBE( &p_sys->p_header[p_sys->i_header_pos+16], 16 );
+
+ p_sys->i_header_pos = p_sys->i_header_size;
+ }
+ p_sys->i_header_pos = 0;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * ParseMRL: parse the options contained in the MRL
+ *****************************************************************************/
+static void ParseMRL( input_thread_t *p_input )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+
+ char *psz_dup = strdup( p_input->psz_name );
+ 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, "channel=", strlen( "channel=" ) ) )
+ {
+ p_sys->i_channel = strtol( psz_parser + strlen( "channel=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "norm=", strlen( "norm=" ) ) )
+ {
+ psz_parser += strlen( "norm=" );
+ if( !strncmp( psz_parser, "pal", strlen( "pal" ) ) )
+ {
+ p_sys->i_norm = VIDEO_MODE_PAL;
+ psz_parser += strlen( "pal" );
+ }
+ else if( !strncmp( psz_parser, "ntsc", strlen( "ntsc" ) ) )
+ {
+ p_sys->i_norm = VIDEO_MODE_NTSC;
+ psz_parser += strlen( "ntsc" );
+ }
+ else if( !strncmp( psz_parser, "secam", strlen( "secam" ) ) )
+ {
+ p_sys->i_norm = VIDEO_MODE_SECAM;
+ psz_parser += strlen( "secam" );
+ }
+ else if( !strncmp( psz_parser, "auto", strlen( "auto" ) ) )
+ {
+ p_sys->i_norm = VIDEO_MODE_AUTO;
+ psz_parser += strlen( "auto" );
+ }
+ else
+ {
+ p_sys->i_norm = strtol( psz_parser, &psz_parser, 0 );
+ }
+ }
+ else if( !strncmp( psz_parser, "frequency=",
+ strlen( "frequency=" ) ) )
+ {
+ p_sys->i_frequency =
+ strtol( psz_parser + strlen( "frequency=" ),
+ &psz_parser, 0 );
+ if( p_sys->i_frequency < 30000 )
+ {
+ msg_Warn( p_input, "v4l syntax has changed : "
+ "'frequency' is now channel frequency in kHz");
+ }
+ }
+ else if( !strncmp( psz_parser, "audio=", strlen( "audio=" ) ) )
+ {
+ p_sys->i_audio = strtol( psz_parser + strlen( "audio=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "size=", strlen( "size=" ) ) )
+ {
+ psz_parser += strlen( "size=" );
+ if( !strncmp( psz_parser, "subqcif", strlen( "subqcif" ) ) )
+ {
+ p_sys->i_width = 128;
+ p_sys->i_height = 96;
+ }
+ else if( !strncmp( psz_parser, "qsif", strlen( "qsif" ) ) )
+ {
+ p_sys->i_width = 160;
+ p_sys->i_height = 120;
+ }
+ else if( !strncmp( psz_parser, "qcif", strlen( "qcif" ) ) )
+ {
+ p_sys->i_width = 176;
+ p_sys->i_height = 144;
+ }
+ else if( !strncmp( psz_parser, "sif", strlen( "sif" ) ) )
+ {
+ p_sys->i_width = 320;
+ p_sys->i_height = 244;
+ }
+ else if( !strncmp( psz_parser, "cif", strlen( "cif" ) ) )
+ {
+ p_sys->i_width = 352;
+ p_sys->i_height = 288;
+ }
+ else if( !strncmp( psz_parser, "vga", strlen( "vga" ) ) )
+ {
+ p_sys->i_width = 640;
+ p_sys->i_height = 480;
+ }
+ else
+ {
+ /* widthxheight */
+ p_sys->i_width = strtol( psz_parser, &psz_parser, 0 );
+ if( *psz_parser == 'x' || *psz_parser == 'X')
+ {
+ p_sys->i_height = strtol( psz_parser + 1,
+ &psz_parser, 0 );
+ }
+ msg_Dbg( p_input, "WxH %dx%d", p_sys->i_width,
+ p_sys->i_height );
+ }
+ }
+ else if( !strncmp( psz_parser, "tuner=", strlen( "tuner=" ) ) )
+ {
+ p_sys->i_tuner = strtol( psz_parser + strlen( "tuner=" ),
+ &psz_parser, 0 );
+ }
+ else 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 );
+
+ psz_parser += i_len;
+ }
+ else if( !strncmp( psz_parser, "samplerate=",
+ strlen( "samplerate=" ) ) )
+ {
+ p_sys->i_sample_rate =
+ strtol( psz_parser + strlen( "samplerate=" ),
+ &psz_parser, 0 );
+ }
+ 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, "mjpeg", strlen( "mjpeg" ) ) )
+ {
+ psz_parser += strlen( "mjpeg" );
+
+ p_sys->b_mjpeg = VLC_TRUE;
+ }
+ else if( !strncmp( psz_parser, "decimation=",
+ strlen( "decimation=" ) ) )
+ {
+ p_sys->i_decimation =
+ strtol( psz_parser + strlen( "decimation=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "quality=",
+ strlen( "quality=" ) ) )
+ {
+ p_sys->i_quality =
+ strtol( psz_parser + strlen( "quality=" ),
+ &psz_parser, 0 );
+ }
+ else if( !strncmp( psz_parser, "fps=", strlen( "fps=" ) ) )
+ {
+ p_sys->f_fps = strtof( psz_parser + strlen( "fps=" ),
+ &psz_parser );
+ }
+ else
+ {
+ msg_Warn( p_input, "unknown option" );
+ }
+
+ while( *psz_parser && *psz_parser != ':' )
+ {
+ psz_parser++;
+ }
+
+ if( *psz_parser == '\0' )
+ {
+ break;
+ }
+ }
+ }
+
+ if( *psz_dup )
+ {
+ p_sys->psz_device = strdup( psz_dup );
+ }
+ if( psz_dup ) free( psz_dup );
+}
+
+/*****************************************************************************
+ * OpenVideoDev:
+ *****************************************************************************/
+int OpenVideoDev( input_thread_t *p_input, char *psz_device )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ int i_fd;
+
+ struct video_channel vid_channel;
+ struct mjpeg_params mjpeg;
+ int i;
+
+ if( ( i_fd = open( psz_device, O_RDWR ) ) < 0 )
+ {
+ msg_Err( p_input, "cannot open device (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+
+ if( ioctl( i_fd, VIDIOCGCAP, &p_sys->vid_cap ) < 0 )
+ {
+ msg_Err( p_input, "cannot get capabilities (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+
+ msg_Dbg( p_input,
+ "V4L device %s %d channels %d audios %d < w < %d %d < h < %d",
+ p_sys->vid_cap.name,
+ p_sys->vid_cap.channels,
+ p_sys->vid_cap.audios,
+ p_sys->vid_cap.minwidth, p_sys->vid_cap.maxwidth,
+ p_sys->vid_cap.minheight, p_sys->vid_cap.maxheight );
+
+ if( p_sys->i_channel < 0 || p_sys->i_channel >= p_sys->vid_cap.channels )
+ {
+ msg_Dbg( p_input, "invalid channel, falling back on channel 0" );
+ p_sys->i_channel = 0;
+ }
+ if( p_sys->i_audio >= p_sys->vid_cap.audios )
+ {
+ msg_Dbg( p_input, "invalid audio, falling back with no audio" );
+ p_sys->i_audio = -1;
+ }
+
+ if( p_sys->i_width < p_sys->vid_cap.minwidth ||
+ p_sys->i_width > p_sys->vid_cap.maxwidth )
+ {
+ msg_Dbg( p_input, "invalid width %i", p_sys->i_width );
+ p_sys->i_width = 0;
+ }
+ if( p_sys->i_height < p_sys->vid_cap.minheight ||
+ p_sys->i_height > p_sys->vid_cap.maxheight )
+ {
+ msg_Dbg( p_input, "invalid height %i", p_sys->i_height );
+ p_sys->i_height = 0;
+ }
+
+ if( !( p_sys->vid_cap.type & VID_TYPE_CAPTURE ) )
+ {
+ msg_Err( p_input, "cannot grab" );
+ goto vdev_failed;
+ }
+
+ vid_channel.channel = p_sys->i_channel;
+ if( ioctl( i_fd, VIDIOCGCHAN, &vid_channel ) < 0 )
+ {
+ msg_Err( p_input, "cannot get channel infos (%s)",
+ strerror( errno ) );
+ goto vdev_failed;
+ }
+ msg_Dbg( p_input,
+ "setting channel %s(%d) %d tuners flags=0x%x type=0x%x norm=0x%x",
+ vid_channel.name,
+ vid_channel.channel,
+ vid_channel.tuners,
+ vid_channel.flags,
+ vid_channel.type,
+ vid_channel.norm );
+
+ if( p_sys->i_tuner >= vid_channel.tuners )
+ {
+ msg_Dbg( p_input, "invalid tuner, falling back on tuner 0" );
+ p_sys->i_tuner = 0;
+ }
+
+ vid_channel.norm = p_sys->i_norm;
+ if( ioctl( i_fd, VIDIOCSCHAN, &vid_channel ) < 0 )
+ {
+ msg_Err( p_input, "cannot set channel (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+
+ if( vid_channel.flags & VIDEO_VC_TUNER )
+ {
+
+ /* set tuner */
+#if 0
+ struct video_tuner vid_tuner;
+ if( p_sys->i_tuner >= 0 )
+ {
+ vid_tuner.tuner = p_sys->i_tuner;
+ if( ioctl( i_fd, VIDIOCGTUNER, &vid_tuner ) < 0 )
+ {
+ msg_Err( p_input, "cannot get tuner (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+ msg_Dbg( p_input, "tuner %s low=%d high=%d, flags=0x%x "
+ "mode=0x%x signal=0x%x",
+ vid_tuner.name, vid_tuner.rangelow, vid_tuner.rangehigh,
+ vid_tuner.flags, vid_tuner.mode, vid_tuner.signal );
+
+ msg_Dbg( p_input, "setting tuner %s (%d)",
+ vid_tuner.name, vid_tuner.tuner );
+
+ /* FIXME FIXME to be checked FIXME FIXME */
+ //vid_tuner.mode = p_sys->i_norm;
+ if( ioctl( i_fd, VIDIOCSTUNER, &vid_tuner ) < 0 )
+ {
+ msg_Err( p_input, "cannot set tuner (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+ }
+#endif
+
+ /* Show a warning if frequency is < than 30000.
+ * User is certainly usint old syntax. */
+
+
+ /* set frequency */
+ if( p_sys->i_frequency >= 0 )
+ {
+ int driver_frequency = p_sys->i_frequency * 16 /1000;
+ if( ioctl( i_fd, VIDIOCSFREQ, &driver_frequency ) < 0 )
+ {
+ msg_Err( p_input, "cannot set frequency (%s)",
+ strerror( errno ) );
+ goto vdev_failed;
+ }
+ msg_Dbg( p_input, "frequency %d (%d)", p_sys->i_frequency,
+ driver_frequency );
+ }
+ }
+
+ /* set audio */
+ if( vid_channel.flags & VIDEO_VC_AUDIO )
+ {
+ struct video_audio vid_audio;
+
+ /* XXX TODO volume, balance, ... */
+ if( p_sys->i_audio >= 0 )
+ {
+ vid_audio.audio = p_sys->i_audio;
+ if( ioctl( i_fd, VIDIOCGAUDIO, &vid_audio ) < 0 )
+ {
+ msg_Err( p_input, "cannot get audio (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+
+ /* unmute audio */
+ vid_audio.flags &= ~VIDEO_AUDIO_MUTE;
+
+ if( ioctl( i_fd, VIDIOCSAUDIO, &vid_audio ) < 0 )
+ {
+ msg_Err( p_input, "cannot set audio (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+ }
+
+ }
+
+ /* establish basic params with input and norm before feeling width
+ * or height */
+ if( p_sys->b_mjpeg )
+ {
+ struct quicktime_mjpeg_app1 *p_app1;
+ int32_t i_offset;
+
+ if( ioctl( i_fd, MJPIOC_G_PARAMS, &mjpeg ) < 0 )
+ {
+ msg_Err( p_input, "cannot get mjpeg params (%s)",
+ strerror( errno ) );
+ goto vdev_failed;
+ }
+ mjpeg.input = p_sys->i_channel;
+ mjpeg.norm = p_sys->i_norm;
+ mjpeg.decimation = p_sys->i_decimation;
+
+ if( p_sys->i_width )
+ mjpeg.img_width = p_sys->i_width / p_sys->i_decimation;
+ if( p_sys->i_height )
+ mjpeg.img_height = p_sys->i_height / p_sys->i_decimation;
+
+ /* establish Quicktime APP1 marker while we are here */
+ mjpeg.APPn = 1;
+ mjpeg.APP_len = 40;
+
+ /* aligned */
+ p_app1 = (struct quicktime_mjpeg_app1 *)mjpeg.APP_data;
+ p_app1->i_reserved = 0;
+ p_app1->i_tag = VLC_FOURCC( 'm','j','p','g' );
+ p_app1->i_field_size = 0;
+ p_app1->i_padded_field_size = 0;
+ p_app1->i_next_field = 0;
+ /* XXX WARNING XXX */
+ /* these's nothing magic about these values. We are dangerously
+ * assuming the encoder card is encoding mjpeg-a and is not throwing
+ * in marker tags we aren't expecting. It's bad enough we have to
+ * search through the jpeg output for every frame we grab just to
+ * find the first field's end marker, so we take this risk to boost
+ * performance.
+ * This is really something the driver could do for us because this
+ * does conform to standards outside of Apple Quicktime.
+ */
+ i_offset = 0x2e;
+ p_app1->i_DQT_offset = hton32( i_offset );
+ i_offset = 0xb4;
+ p_app1->i_DHT_offset = hton32( i_offset );
+ i_offset = 0x258;
+ p_app1->i_SOF_offset = hton32( i_offset );
+ i_offset = 0x26b;
+ p_app1->i_SOS_offset = hton32( i_offset );
+ i_offset = 0x279;
+ p_app1->i_data_offset = hton32( i_offset );
+
+ /* SOF and SOS aren't specified by the mjpeg API because they aren't
+ * optional. They will be present in the output. */
+ mjpeg.jpeg_markers = JPEG_MARKER_DHT | JPEG_MARKER_DQT;
+
+ if( ioctl( i_fd, MJPIOC_S_PARAMS, &mjpeg ) < 0 )
+ {
+ msg_Err( p_input, "cannot set mjpeg params (%s)",
+ strerror( errno ) );
+ goto vdev_failed;
+ }
+
+ p_sys->i_width = mjpeg.img_width * mjpeg.HorDcm;
+ p_sys->i_height = mjpeg.img_height * mjpeg.VerDcm *
+ mjpeg.field_per_buff;
+ }
+
+ /* fix width/height */
+ if( !p_sys->b_mjpeg && ( p_sys->i_width == 0 || p_sys->i_height == 0 ) )
+ {
+ struct video_window vid_win;
+
+ if( ioctl( i_fd, VIDIOCGWIN, &vid_win ) < 0 )
+ {
+ msg_Err( p_input, "cannot get win (%s)", strerror( errno ) );
+ goto vdev_failed;
+ }
+ p_sys->i_width = vid_win.width;
+ p_sys->i_height = vid_win.height;
+
+ msg_Dbg( p_input, "will use %dx%d", p_sys->i_width, p_sys->i_height );
+ }
+
+ p_sys->p_video_frame = NULL;
+
+ if( !p_sys->b_mjpeg )
+ {
+ /* Find out video format used by device */
+ if( ioctl( i_fd, VIDIOCGPICT, &p_sys->vid_picture ) == 0 )
+ {
+ struct video_picture vid_picture = p_sys->vid_picture;
+ vlc_value_t val;
+ int i;
+
+ vid_picture.palette = 0;
+ p_sys->i_fourcc = 0;
+
+ var_Create( p_input, "v4l-chroma",
+ VLC_VAR_STRING | VLC_VAR_DOINHERIT );
+ var_Get( p_input, "v4l-chroma", &val );
+ if( val.psz_string && strlen( val.psz_string ) >= 4 )
+ {
+ int i_chroma =
+ VLC_FOURCC( val.psz_string[0], val.psz_string[1],
+ val.psz_string[2], val.psz_string[3] );
- return 0;
+ /* Find out v4l chroma code */
+ for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
+ {
+ if( v4lchroma_to_fourcc[i].i_fourcc == i_chroma )
+ {
+ vid_picture.palette = v4lchroma_to_fourcc[i].i_v4l;
+ break;
+ }
+ }
+ }
+ if( val.psz_string ) free( val.psz_string );
+
+ if( vid_picture.palette &&
+ !ioctl( i_fd, VIDIOCSPICT, &vid_picture ) )
+ {
+ p_sys->vid_picture = vid_picture;
+ }
+ else
+ {
+ /* Try to set the format to something easy to encode */
+ vid_picture.palette = VIDEO_PALETTE_YUV420P;
+ if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
+ {
+ p_sys->vid_picture = vid_picture;
+ }
+ else
+ {
+ vid_picture.palette = VIDEO_PALETTE_YUV422P;
+ if( ioctl( i_fd, VIDIOCSPICT, &vid_picture ) == 0 )
+ {
+ p_sys->vid_picture = vid_picture;
+ }
+ }
+ }
+
+ /* Find out final format */
+ for( i = 0; v4lchroma_to_fourcc[i].i_v4l != 0; i++ )
+ {
+ if( v4lchroma_to_fourcc[i].i_v4l == p_sys->vid_picture.palette)
+ {
+ p_sys->i_fourcc = v4lchroma_to_fourcc[i].i_fourcc;
+ break;
+ }
+ }
+
+ }
+ else
+ {
+ msg_Err( p_input, "ioctl VIDIOCGPICT failed" );
+ goto vdev_failed;
+ }
+ }
+
+ if( p_sys->b_mjpeg )
+ {
+ int i;
+
+ p_sys->mjpeg_buffers.count = 8;
+ p_sys->mjpeg_buffers.size = MJPEG_BUFFER_SIZE;
+
+ if( ioctl( i_fd, MJPIOC_REQBUFS, &p_sys->mjpeg_buffers ) < 0 )
+ {
+ msg_Err( p_input, "mmap unsupported" );
+ goto vdev_failed;
+ }
+
+ p_sys->p_video_mmap = mmap( 0,
+ p_sys->mjpeg_buffers.size * p_sys->mjpeg_buffers.count,
+ PROT_READ | PROT_WRITE, MAP_SHARED, i_fd, 0 );
+ if( p_sys->p_video_mmap == MAP_FAILED )
+ {
+ msg_Err( p_input, "mmap failed" );
+ goto vdev_failed;
+ }
+
+ p_sys->i_fourcc = VLC_FOURCC( 'm','j','p','g' );
+ p_sys->i_frame_pos = -1;
+
+ /* queue up all the frames */
+ for( i = 0; i < (int)p_sys->mjpeg_buffers.count; i++ )
+ {
+ if( ioctl( i_fd, MJPIOC_QBUF_CAPT, &i ) < 0 )
+ {
+ msg_Err( p_input, "unable to queue frame" );
+ goto vdev_failed;
+ }
+ }
+ }
+ else
+ {
+ /* Fill in picture_t fields */
+ vout_InitPicture( VLC_OBJECT(p_input), &p_sys->pic, p_sys->i_fourcc,
+ p_sys->i_width, p_sys->i_height, p_sys->i_width *
+ VOUT_ASPECT_FACTOR / p_sys->i_height );
+ if( !p_sys->pic.i_planes )
+ {
+ msg_Err( p_input, "unsupported chroma" );
+ goto vdev_failed;
+ }
+ p_sys->i_video_frame_size = 0;
+ for( i = 0; i < p_sys->pic.i_planes; i++ )
+ {
+ p_sys->i_video_frame_size += p_sys->pic.p[i].i_lines *
+ p_sys->pic.p[i].i_visible_pitch;
+ }
+
+ msg_Dbg( p_input, "v4l device uses frame size: %i",
+ p_sys->i_video_frame_size );
+ msg_Dbg( p_input, "v4l device uses chroma: %4.4s",
+ (char*)&p_sys->i_fourcc );
+
+ /* Allocate mmap buffer */
+ if( ioctl( i_fd, VIDIOCGMBUF, &p_sys->vid_mbuf ) < 0 )
+ {
+ msg_Err( p_input, "mmap unsupported" );
+ goto vdev_failed;
+ }
+
+ p_sys->p_video_mmap = mmap( 0, p_sys->vid_mbuf.size,
+ PROT_READ|PROT_WRITE, MAP_SHARED,
+ i_fd, 0 );
+ if( p_sys->p_video_mmap == MAP_FAILED )
+ {
+ /* FIXME -> normal read */
+ msg_Err( p_input, "mmap failed" );
+ goto vdev_failed;
+ }
+
+ /* init grabbing */
+ p_sys->vid_mmap.frame = 0;
+ p_sys->vid_mmap.width = p_sys->i_width;
+ p_sys->vid_mmap.height = p_sys->i_height;
+ p_sys->vid_mmap.format = p_sys->vid_picture.palette;
+ if( ioctl( i_fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
+ {
+ msg_Warn( p_input, "%4.4s refused", (char*)&p_sys->i_fourcc );
+ msg_Err( p_input, "chroma selection failed" );
+ goto vdev_failed;
+ }
+ }
+ return i_fd;
+
+vdev_failed:
+
+ if( i_fd >= 0 ) close( i_fd );
+ return -1;
+}
+
+/*****************************************************************************
+ * OpenAudioDev:
+ *****************************************************************************/
+int OpenAudioDev( input_thread_t *p_input, char *psz_device )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ int i_fd, i_format;
+
+ if( (i_fd = open( psz_device, O_RDONLY | O_NONBLOCK )) < 0 )
+ {
+ msg_Err( p_input, "cannot open audio device (%s)", strerror( errno ) );
+ 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_input, "cannot set audio format (16b little endian) "
+ "(%s)", strerror( errno ) );
+ goto adev_fail;
+ }
+
+ if( ioctl( i_fd, SNDCTL_DSP_STEREO,
+ &p_sys->b_stereo ) < 0 )
+ {
+ msg_Err( p_input, "cannot set audio channels count (%s)",
+ strerror( errno ) );
+ goto adev_fail;
+ }
+
+ if( ioctl( i_fd, SNDCTL_DSP_SPEED,
+ &p_sys->i_sample_rate ) < 0 )
+ {
+ msg_Err( p_input, "cannot set audio sample rate (%s)",
+ strerror( errno ) );
+ goto adev_fail;
+ }
+
+ msg_Dbg( p_input, "openened adev=`%s' %s %dHz",
+ psz_device, p_sys->b_stereo ? "stereo" : "mono",
+ p_sys->i_sample_rate );
+
+ p_sys->i_audio_frame_size = 0;
+ p_sys->i_audio_frame_size_allocated = 6*1024;
+ p_sys->p_audio_frame = malloc( p_sys->i_audio_frame_size_allocated );
+
+ return i_fd;
+
+ adev_fail:
+
+ if( i_fd >= 0 ) close( i_fd );
+ return -1;
+}
+
+/*****************************************************************************
+ * AccessClose: close device, free resources
+ *****************************************************************************/
+static void AccessClose( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ access_sys_t *p_sys = p_input->p_access_data;
+
+ if( p_sys->psz_device ) free( p_sys->psz_device );
+ if( p_sys->psz_vdev ) free( p_sys->psz_vdev );
+ if( p_sys->psz_adev ) free( p_sys->psz_adev );
+ if( p_sys->fd_video >= 0 ) close( p_sys->fd_video );
+ if( p_sys->fd_audio >= 0 ) close( p_sys->fd_audio );
+
+ if( p_sys->p_header ) free( p_sys->p_header );
+ if( p_sys->p_audio_frame ) free( p_sys->p_audio_frame );
+
+ if( p_sys->b_mjpeg )
+ {
+ int i_noframe = -1;
+ ioctl( p_sys->fd_video, MJPIOC_QBUF_CAPT, &i_noframe );
+ }
+
+ if( p_sys->p_video_mmap && p_sys->p_video_mmap != MAP_FAILED )
+ {
+ if( p_sys->b_mjpeg )
+ munmap( p_sys->p_video_mmap, p_sys->mjpeg_buffers.size *
+ p_sys->mjpeg_buffers.count );
+ else
+ munmap( p_sys->p_video_mmap, p_sys->vid_mbuf.size );
+ }
+
+ free( p_sys );
}
/*****************************************************************************
- * V4lClose: close device
+ * GrabAudio: grab audio
*****************************************************************************/
-static void V4lClose( vlc_object_t *p_this )
+static int GrabAudio( input_thread_t * p_input,
+ uint8_t **pp_data,
+ int *pi_data,
+ mtime_t *pi_pts )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ struct audio_buf_info buf_info;
+ int i_read;
+ int i_correct;
+
+ i_read = read( p_sys->fd_audio, p_sys->p_audio_frame,
+ p_sys->i_audio_frame_size_allocated );
+
+ if( i_read <= 0 )
+ {
+ return VLC_EGENERIC;
+ }
+
+ p_sys->i_audio_frame_size = i_read;
+
+ /* from vls : correct the date because of kernel buffering */
+ i_correct = i_read;
+ if( ioctl( p_sys->fd_audio, SNDCTL_DSP_GETISPACE, &buf_info ) == 0 )
+ {
+ i_correct += buf_info.bytes;
+ }
+
+
+ *pp_data = p_sys->p_audio_frame;
+ *pi_data = p_sys->i_audio_frame_size;
+ *pi_pts = mdate() - (mtime_t)1000000 * (mtime_t)i_correct /
+ 2 / ( p_sys->b_stereo ? 2 : 1) / p_sys->i_sample_rate;
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * GrabVideo:
+ *****************************************************************************/
+static uint8_t *GrabCapture( input_thread_t *p_input )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ p_sys->vid_mmap.frame = ( p_sys->i_frame_pos + 1 ) %
+ p_sys->vid_mbuf.frames;
+ for( ;; )
+ {
+ if( ioctl( p_sys->fd_video, VIDIOCMCAPTURE, &p_sys->vid_mmap ) >= 0 )
+ {
+ break;
+ }
+
+ if( errno != EAGAIN )
+ {
+ msg_Err( p_input, "failed while grabbing new frame" );
+ return( NULL );
+ }
+ msg_Dbg( p_input, "another try ?" );
+ }
+
+ //msg_Warn( p_input, "grab a new frame" );
+
+ while( ioctl(p_sys->fd_video, VIDIOCSYNC, &p_sys->i_frame_pos) < 0 &&
+ ( errno == EAGAIN || errno == EINTR ) );
+
+ p_sys->i_frame_pos = p_sys->vid_mmap.frame;
+ /* leave i_video_frame_size alone */
+ return p_sys->p_video_mmap + p_sys->vid_mbuf.offsets[p_sys->i_frame_pos];
+}
+
+static uint8_t *GrabMJPEG( input_thread_t *p_input )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ struct mjpeg_sync sync;
+ uint8_t *p_frame, *p_field, *p;
+ uint16_t tag;
+ uint32_t i_size;
+ struct quicktime_mjpeg_app1 *p_app1 = NULL;
+
+ /* re-queue the last frame we sync'd */
+ if( p_sys->i_frame_pos != -1 )
+ while( ioctl( p_sys->fd_video, MJPIOC_QBUF_CAPT, &p_sys->i_frame_pos ) < 0 &&
+ ( errno == EAGAIN || errno == EINTR ) );
+
+ /* sync on the next frame */
+ while( ioctl( p_sys->fd_video, MJPIOC_SYNC, &sync ) < 0 &&
+ ( errno == EAGAIN || errno == EINTR ) );
+
+ p_sys->i_frame_pos = sync.frame;
+ p_frame = p_sys->p_video_mmap + p_sys->mjpeg_buffers.size * sync.frame;
+
+ /* p_frame now points to the data. fix up the Quicktime APP1 marker */
+ tag = 0xffd9;
+ tag = hton16( tag );
+ p_field = p_frame;
+
+ /* look for EOI */
+ p = memmem( p_field, sync.length, &tag, 2 );
+
+ if( p )
+ {
+ p += 2; /* data immediately following EOI */
+ /* UNALIGNED! */
+ p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
+
+ i_size = ((uint32_t)(p - p_field));
+ i_size = hton32( i_size );
+ memcpy( &p_app1->i_field_size, &i_size, 4 );
+
+ while( *p == 0xff && *(p+1) == 0xff )
+ p++;
+
+ i_size = ((uint32_t)(p - p_field));
+ i_size = hton32( i_size );
+ memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
+ }
+
+ tag = 0xffd8;
+ tag = hton16( tag );
+ p_field = memmem( p, sync.length - (size_t)(p - p_frame), &tag, 2 );
+
+ if( p_field )
+ {
+ i_size = (uint32_t)(p_field - p_frame);
+ i_size = hton32( i_size );
+ memcpy( &p_app1->i_next_field, &i_size, 4 );
+
+ /* UNALIGNED! */
+ p_app1 = (struct quicktime_mjpeg_app1 *)(p_field + 6);
+ tag = 0xffd9;
+ tag = hton16( tag );
+ p = memmem( p_field, sync.length - (size_t)(p_field - p_frame),
+ &tag, 2 );
+
+ if( !p )
+ {
+ /* sometimes the second field doesn't have the EOI. just put it
+ * there
+ */
+ p = p_frame + sync.length;
+ memcpy( p, &tag, 2 );
+ sync.length += 2;
+ }
+
+ p += 2;
+ i_size = (uint32_t)(p - p_field);
+ i_size = hton32( i_size );
+ memcpy( &p_app1->i_field_size, &i_size, 4 );
+ i_size = (uint32_t)(sync.length - (uint32_t)(p_field - p_frame));
+ i_size = hton32( i_size );
+ memcpy( &p_app1->i_padded_field_size, &i_size, 4 );
+ }
+
+ p_sys->i_video_frame_size = sync.length;
+ return p_frame;
+}
+
+static int GrabVideo( input_thread_t * p_input,
+ uint8_t **pp_data,
+ int *pi_data,
+ mtime_t *pi_pts )
{
- input_thread_t * p_input = (input_thread_t *)p_this;
- //thread_data_t *p_data = (thread_data_t *)p_input->p_access_data;
+ access_sys_t *p_sys = p_input->p_access_data;
+ uint8_t *p_frame;
+
+
+ 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);
+
+ /* Dif we wait long enougth ? */
+ if( p_sys->i_video_pts + i_dur > mdate() )
+ {
+ return VLC_EGENERIC;
+ }
+ }
+
+ if( p_sys->b_mjpeg )
+ p_frame = GrabMJPEG( p_input );
+ else
+ p_frame = GrabCapture( p_input );
+
+ if( !p_frame )
+ return VLC_EGENERIC;
+
+ p_sys->i_video_pts = mdate();
+ p_sys->p_video_frame = p_frame;
+
+ *pp_data = p_sys->p_video_frame;
+ *pi_data = p_sys->i_video_frame_size;
+ *pi_pts = p_sys->i_video_pts;
- //close( p_data->i_handle );
- close( i_fd );
- //free( p_data );
+ return VLC_SUCCESS;
}
/*****************************************************************************
- * V4lRead: reads from the device into PES packets.
+ * Read: reads from the device into PES packets.
*****************************************************************************
* Returns -1 in case of error, 0 in case of EOF, otherwise the number of
* bytes.
*****************************************************************************/
-#define WIDTH 640
-#define HEIGHT 480
+static int Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ int i_data = 0;
+ int i_stream;
+ mtime_t i_pts;
+
+ while( i_len > 0 )
+ {
+ /* First copy header if any */
+ if( p_sys->i_header_pos < p_sys->i_header_size )
+ {
+ int i_copy;
+
+ i_copy = __MIN( p_sys->i_header_size - p_sys->i_header_pos,
+ (int)i_len );
+ memcpy( p_buffer, &p_sys->p_header[p_sys->i_header_pos], i_copy );
+ p_sys->i_header_pos += i_copy;
+
+ p_buffer += i_copy;
+ i_len -= i_copy;
+ i_data += i_copy;
+ }
+
+ /* then data */
+ if( i_len > 0 && p_sys->i_data_pos < p_sys->i_data_size )
+ {
+ int i_copy;
+
+ i_copy = __MIN( p_sys->i_data_size - p_sys->i_data_pos,
+ (int)i_len );
+
+ memcpy( p_buffer, &p_sys->p_data[p_sys->i_data_pos], i_copy );
+ p_sys->i_data_pos += i_copy;
+
+ p_buffer += i_copy;
+ i_len -= i_copy;
+ i_data += i_copy;
+ }
+
+ /* The caller got what he wanted */
+ if( i_len == 0 )
+ {
+ return i_data;
+ }
+
+ /* Read no more than one frame at a time.
+ * That kills latency, especially for encoded v4l streams */
+ if( p_sys->i_data_size && p_sys->i_data_pos == p_sys->i_data_size )
+ {
+ p_sys->i_data_pos = 0; p_sys->i_data_size = 0;
+ return i_data;
+ }
+
+ /* Re-fill data by grabbing audio/video */
+ p_sys->i_data_pos = p_sys->i_data_size = 0;
+
+ /* Try grabbing audio frames first */
+ i_stream = p_sys->i_streams - 1;
+ if( p_sys->fd_audio < 0 ||
+ GrabAudio( p_input, &p_sys->p_data,
+ &p_sys->i_data_size, &i_pts ) != VLC_SUCCESS )
+ {
+ /* Try grabbing video frame */
+ i_stream = 0;
+ if( p_sys->fd_video < 0 ||
+ GrabVideo( p_input, &p_sys->p_data,
+ &p_sys->i_data_size, &i_pts ) != VLC_SUCCESS )
+ {
+ /* Sleep so we do not consume all the cpu, 10ms seems
+ * like a good value (100fps) */
+ msleep( 10000 );
+ continue;
+ }
+ }
+
+ /* create pseudo header */
+ p_sys->i_header_size = 16;
+ p_sys->i_header_pos = 0;
+ SetDWBE( &p_sys->p_header[0], i_stream );
+ SetDWBE( &p_sys->p_header[4], p_sys->i_data_size );
+ SetQWBE( &p_sys->p_header[8], i_pts );
+ }
+
+ return i_data;
+}
+
+
+
+/*****************************************************************************
+ * Demux: local prototypes
+ *****************************************************************************/
+struct demux_sys_t
+{
+ int i_es;
+ es_out_id_t **es;
+};
+
+static int Demux ( input_thread_t * );
-static int V4lRead( input_thread_t * p_input, byte_t * p_buffer,
- size_t i_len )
-{
- struct video_capability vid_caps;
- struct video_mbuf vid_buf;
- struct video_mmap vid_mmap;
+/****************************************************************************
+ * DemuxOpen:
+ ****************************************************************************/
+static int DemuxOpen( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ demux_sys_t *p_sys;
- char *map = NULL;
+ uint8_t *p_peek;
+ int i_es;
+ int i;
- //thread_data_t * p_data;
- int i_read = 0;
+ /* a little test to see if it's a v4l stream */
+ if( stream_Peek( p_input->s, &p_peek, 8 ) < 8 )
+ {
+ msg_Warn( p_input, "v4l plugin discarded (cannot peek)" );
+ return VLC_EGENERIC;
+ }
- if( ioctl( i_fd, VIDIOCGCAP, &vid_caps ) == -1 )
+ if( strncmp( p_peek, ".v4l", 4 ) ||
+ ( i_es = GetDWBE( &p_peek[4] ) ) <= 0 )
{
- printf("ioctl (VIDIOCGCAP) failed\n");
- return 0;
+ msg_Warn( p_input, "v4l plugin discarded (not a valid stream)" );
+ return VLC_EGENERIC;
+ }
+
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+ if( input_InitStream( p_input, 0 ) == -1)
+ {
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+ msg_Err( p_input, "cannot init stream" );
+ return( VLC_EGENERIC );
}
+ p_input->stream.i_mux_rate = 0 / 50;
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
- if( ioctl( i_fd, VIDIOCGMBUF, &vid_buf ) == -1 )
+ p_input->pf_demux = Demux;
+ p_input->pf_demux_control = demux_vaControlDefault;
+ p_input->p_demux_data = p_sys = malloc( sizeof( demux_sys_t ) );
+ p_sys->i_es = 0;
+ p_sys->es = NULL;
+
+ if( stream_Peek( p_input->s, &p_peek, 8 + 20 * i_es ) < 8 + 20 * i_es )
{
- // to do a normal read()
- map = malloc (WIDTH * HEIGHT * 3);
- len = read (fd_webcam, map, WIDTH * HEIGHT * 3);
- if (len <= 0)
+ msg_Err( p_input, "v4l plugin discarded (cannot peek)" );
+ return VLC_EGENERIC;
+ }
+ p_peek += 8;
+
+ for( i = 0; i < i_es; i++ )
+ {
+ es_format_t fmt;
+
+ if( !strncmp( p_peek, "auds", 4 ) )
{
- free (map);
- return (NULL);
+ es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC( p_peek[4], p_peek[5],
+ p_peek[6], p_peek[7] ) );
+
+ fmt.audio.i_channels = GetDWBE( &p_peek[8] );
+ fmt.audio.i_rate = GetDWBE( &p_peek[12] );
+ fmt.audio.i_bitspersample = GetDWBE( &p_peek[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_input, "new audio es %d channels %dHz",
+ fmt.audio.i_channels, fmt.audio.i_rate );
+
+ TAB_APPEND( p_sys->i_es, p_sys->es,
+ es_out_Add( p_input->p_es_out, &fmt ) );
}
- *size = 0;
- return (map);
+ else if( !strncmp( p_peek, "vids", 4 ) )
+ {
+ es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC( p_peek[4], p_peek[5],
+ p_peek[6], p_peek[7] ) );
+ fmt.video.i_width = GetDWBE( &p_peek[8] );
+ fmt.video.i_height = GetDWBE( &p_peek[12] );
+
+ msg_Dbg( p_input, "added new video es %4.4s %dx%d",
+ (char*)&fmt.i_codec,
+ fmt.video.i_width, fmt.video.i_height );
+ TAB_APPEND( p_sys->i_es, p_sys->es,
+ es_out_Add( p_input->p_es_out, &fmt ) );
+ }
+
+ p_peek += 20;
}
- //p_data = (thread_data_t *)p_input->p_access_data;
- return i_read;
+ /* Skip header */
+ stream_Read( p_input->s, NULL, 8 + 20 * i_es );
+
+ return VLC_SUCCESS;
+}
+
+/****************************************************************************
+ * DemuxClose:
+ ****************************************************************************/
+static void DemuxClose( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ demux_sys_t *p_sys = p_input->p_demux_data;
+
+ if( p_sys->i_es > 0 )
+ {
+ free( p_sys->es );
+ }
+ free( p_sys );
}
+/****************************************************************************
+ * Demux:
+ ****************************************************************************/
+static int Demux( input_thread_t *p_input )
+{
+ demux_sys_t *p_sys = p_input->p_demux_data;
+ block_t *p_block;
+
+ int i_es;
+ int i_size;
+
+ uint8_t *p_peek;
+ mtime_t i_pts;
+
+ if( stream_Peek( p_input->s, &p_peek, 16 ) < 16 )
+ {
+ msg_Warn( p_input, "cannot peek (EOF ?)" );
+ return 0;
+ }
+
+ i_es = GetDWBE( &p_peek[0] );
+ if( i_es < 0 || i_es >= p_sys->i_es )
+ {
+ msg_Err( p_input, "cannot find ES" );
+ return -1;
+ }
+
+ i_size = GetDWBE( &p_peek[4] );
+ i_pts = GetQWBE( &p_peek[8] );
+
+ if( ( p_block = stream_Block( p_input->s, 16 + i_size ) ) == NULL )
+ {
+ msg_Warn( p_input, "cannot read data" );
+ return 0;
+ }
+
+ p_block->p_buffer += 16;
+ p_block->i_buffer -= 16;
+
+ p_block->i_dts =
+ p_block->i_pts = i_pts + p_input->i_pts_delay;
+
+ es_out_Send( p_input->p_es_out, p_sys->es[i_es], p_block );
+
+ return 1;
+}
projects / vlc / blobdiff