* v4l.c : Video4Linux input module for vlc
*****************************************************************************
* Copyright (C) 2002 VideoLAN
- * $Id: v4l.c,v 1.4 2003/03/30 18:14:36 gbazin Exp $
+ * $Id: v4l.c,v 1.5 2003/03/31 03:46:11 fenrir Exp $
*
* Author: Samuel Hocevar <sam@zoy.org>
*
* 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 "encoder.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>
+#include <linux/videodev.h>
+
+/* enable audio grabbing */
+#undef _V4L_AUDIO_
+
+#ifdef _V4L_AUDIO_
+ #include <sys/soundcard.h>
+#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
-static int V4lOpen ( vlc_object_t * );
-static void V4lClose ( vlc_object_t * );
-static int V4lRead ( input_thread_t *, byte_t *, size_t );
+static int AccessOpen ( vlc_object_t * );
+static void AccessClose ( vlc_object_t * );
+static int Read ( input_thread_t *, byte_t *, size_t );
+
+static int DemuxOpen ( vlc_object_t * );
+static void DemuxClose ( vlc_object_t * );
+static int Demux ( input_thread_t * );
+
/*****************************************************************************
* Module descriptior
*****************************************************************************/
+#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." )
+
vlc_module_begin();
set_description( _("Video4Linux input") );
- set_capability( "access", 80 );
- set_callbacks( V4lOpen, V4lClose );
+ add_category_hint( N_("v4l"), NULL, VLC_TRUE );
+ add_integer( "v4l-caching", DEFAULT_PTS_DELAY / 1000, NULL,
+ CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
+ add_submodule();
+ add_shortcut( "v4l" );
+ set_capability( "access", 0 );
+ set_callbacks( AccessOpen, AccessClose );
+ add_submodule();
+ add_shortcut( "v4l" );
+ set_capability( "demux", 200 );
+ set_callbacks( DemuxOpen, DemuxClose );
vlc_module_end();
-static int i_fd;
+
+/****************************************************************************
+ * I. Access Part
+ ****************************************************************************/
+struct access_sys_t
+{
+ char *psz_video_device;
+ int fd;
+
+ vlc_fourcc_t i_codec; // if i_codec != i_chroma then we need a compressor
+ video_encoder_t *p_encoder;
+ picture_t pic;
+
+ int i_channel;
+ int i_audio;
+ int i_norm;
+ int i_tuner;
+ int i_frequency;
+ int i_chroma;
+ int i_width;
+ int i_height;
+
+ struct video_capability vid_cap;
+ struct video_mbuf vid_mbuf;
+
+ uint8_t *p_video_mmap;
+ int i_frame_pos;
+ struct video_mmap vid_mmap;
+
+ uint8_t *p_video_frame;
+ int i_video_frame_size;
+ int i_video_frame_size_allocated;
+
+#ifdef _V4L_AUDIO_
+ char *psz_adev;
+ int fd_audio;
+ 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;
+
+#endif
+
+ /* header */
+ 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 uint32_t GetDWBE( uint8_t *p_buff )
+{
+ return( ( p_buff[0] << 24 ) + ( p_buff[1] << 16 ) +
+ ( p_buff[2] << 8 ) + p_buff[3] );
+}
/*****************************************************************************
- * V4lOpen: open device
+ * Open: open device:
+ *****************************************************************************
+ *
+ * url: <video device>::::
+ *
*****************************************************************************/
-static int V4lOpen( vlc_object_t *p_this )
-{
- input_thread_t * p_input = (input_thread_t *)p_this;
+static int AccessOpen( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ access_sys_t *p_sys;
+ char *psz_dup, *psz_parser;
+
+ struct video_channel vid_channel;
+
+ /* create access private data */
+ p_sys = malloc( sizeof( access_sys_t ) );
+ memset( p_sys, 0, sizeof( access_sys_t ) );
+
+ p_sys->psz_video_device = NULL;
+ p_sys->fd = -1;
+ p_sys->i_channel = -1;
+ 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->i_width = 0;
+ p_sys->i_height = 0;
+
+ p_sys->i_frame_pos = 0;
+
+ p_sys->i_codec = VLC_FOURCC( 0, 0, 0, 0 );
+ p_sys->i_video_frame_size_allocated = 0;
+#ifdef _V4L_AUDIO_
+ p_sys->psz_adev = NULL;
+ p_sys->fd_audio = -1;
+ p_sys->i_sample_rate = 44100;
+ p_sys->b_stereo = VLC_TRUE;
+#endif
+
+ p_sys->i_data_size = 0;
+ p_sys->i_data_pos = 0;
+ p_sys->p_data = NULL;
+
+ /* parse url and open device(s) */
+ psz_dup = strdup( p_input->psz_name );
+ 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 );
+ }
+ 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, "codec=", strlen( "codec=" ) ) )
+ {
+ psz_parser += strlen( "codec=" );
+ if( !strncmp( psz_parser, "mpeg4", strlen( "mpeg4" ) ) )
+ {
+ p_sys->i_codec = VLC_FOURCC( 'm', 'p', '4', 'v' );
+ }
+ else if( !strncmp( psz_parser, "mpeg1", strlen( "mpeg1" ) ) )
+ {
+ p_sys->i_codec = VLC_FOURCC( 'm', 'p', '1', 'v' );
+ }
+ else
+ {
+ msg_Warn( p_input, "unknow codec" );
+ }
+ }
+#ifdef _V4L_AUDIO_
+ 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;
+ }
+#endif
+ else
+ {
+ msg_Warn( p_input, "unknow option" );
+ }
+
+ while( *psz_parser && *psz_parser != ':' )
+ {
+ psz_parser++;
+ }
+
+ if( *psz_parser == '\0' )
+ {
+ break;
+ }
+ }
+ }
+
+ if( *psz_dup )
+ {
+ p_sys->psz_video_device = strdup( psz_dup );
+ }
+ else
+ {
+ p_sys->psz_video_device = strdup( "/dev/video" );
+ }
+ msg_Dbg( p_input, "video device=`%s'", p_sys->psz_video_device );
+
+#ifdef _V4L_AUDIO_
+ if( p_sys->psz_adev && *p_sys->psz_adev == '\0' )
+ {
+ p_sys->psz_adev = strdup( "/dev/dsp" );
+ }
+ msg_Dbg( p_input, "audio device=`%s'", p_sys->psz_adev );
+#endif
+
+
+
+ if( ( p_sys->fd = open( p_sys->psz_video_device, O_RDWR ) ) < 0 )
+ {
+ msg_Err( p_input, "cannot open device" );
+ goto failed;
+ }
+
+ if( ioctl( p_sys->fd, VIDIOCGCAP, &p_sys->vid_cap ) < 0 )
+ {
+ msg_Err( p_input, "cannot get capabilities" );
+ goto 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" );
+ 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" );
+ p_sys->i_height = 0;
+ }
+
+ if( !( p_sys->vid_cap.type&VID_TYPE_CAPTURE ) )
+ {
+ msg_Err( p_input, "cannot grab" );
+ goto failed;
+ }
+
+ vid_channel.channel = p_sys->i_channel;
+ if( ioctl( p_sys->fd, VIDIOCGCHAN, &vid_channel ) < 0 )
+ {
+ msg_Err( p_input, "cannot get channel infos" );
+ goto 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( p_sys->fd, VIDIOCSCHAN, &vid_channel ) < 0 )
+ {
+ msg_Err( p_input, "cannot set channel" );
+ goto 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( p_sys->fd, VIDIOCGTUNER, &vid_tuner ) < 0 )
+ {
+ msg_Err( p_input, "cannot get tuner" );
+ goto 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 );
+
+ //vid_tuner.mode = p_sys->i_norm; /* FIXME FIXME to be checked FIXME FIXME */
+ if( ioctl( p_sys->fd, VIDIOCSTUNER, &vid_tuner ) < 0 )
+ {
+ msg_Err( p_input, "cannot set tuner" );
+ goto failed;
+ }
+ }
+#endif
+ /* set frequency */
+ if( p_sys->i_frequency >= 0 )
+ {
+ if( ioctl( p_sys->fd, VIDIOCSFREQ, &p_sys->i_frequency ) < 0 )
+ {
+ msg_Err( p_input, "cannot set frequency" );
+ goto failed;
+ }
+ msg_Dbg( p_input, "frequency %d", p_sys->i_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( p_sys->fd, VIDIOCGAUDIO, &vid_audio ) < 0 )
+ {
+ msg_Err( p_input, "cannot get audio" );
+ goto failed;
+ }
+
+ /* unmute audio */
+ vid_audio.flags &= ~VIDEO_AUDIO_MUTE;
+
+ if( ioctl( p_sys->fd, VIDIOCSAUDIO, &vid_audio ) < 0 )
+ {
+ msg_Err( p_input, "cannot set audio" );
+ goto failed;
+ }
+
+#ifdef _V4L_AUDIO_
+ if( p_sys->psz_adev )
+ {
+ int i_format;
+ if( ( p_sys->fd_audio = open( p_sys->psz_adev, O_RDONLY ) ) < 0 )
+ {
+ msg_Err( p_input, "cannot open audio device" );
+ goto failed;
+ }
+
+ i_format = AFMT_S16_LE;
+ if( ioctl( p_sys->fd_audio, SNDCTL_DSP_SETFMT, &i_format ) < 0 ||
+ i_format != AFMT_S16_LE )
+ {
+ msg_Err( p_input, "cannot set audio format (16b little endian)" );
+ goto failed;
+ }
+
+ if( ioctl( p_sys->fd_audio, SNDCTL_DSP_STEREO, &p_sys->b_stereo ) < 0 )
+ {
+ msg_Err( p_input, "cannot set audio channels count" );
+ goto failed;
+ }
+
+ if( ioctl( p_sys->fd_audio, SNDCTL_DSP_SPEED, &p_sys->i_sample_rate ) < 0 )
+ {
+ msg_Err( p_input, "cannot set audio sample rate" );
+ goto failed;
+ }
+
+ msg_Dbg( p_input,
+ "adev=`%s' %s %dHz",
+ p_sys->psz_adev,
+ 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 = 10*1024;
+ p_sys->p_audio_frame = malloc( p_sys->i_audio_frame_size_allocated );
+ }
+#endif
+ }
+ }
+
+ /* fix width/heigh */
+ if( p_sys->i_width == 0 || p_sys->i_height == 0 )
+ {
+ struct video_window vid_win;
+
+ if( ioctl( p_sys->fd, VIDIOCGWIN, &vid_win ) < 0 )
+ {
+ msg_Err( p_input, "cannot get win" );
+ goto 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 );
+ }
+
+ if( ioctl( p_sys->fd, VIDIOCGMBUF, &p_sys->vid_mbuf ) < 0 )
+ {
+ msg_Err( p_input, "mmap unsupported" );
+ goto failed;
+ }
+
+ p_sys->p_video_mmap = mmap( 0, p_sys->vid_mbuf.size,
+ PROT_READ|PROT_WRITE,
+ MAP_SHARED,
+ p_sys->fd,
+ 0 );
+ if( p_sys->p_video_mmap == MAP_FAILED )
+ {
+ /* FIXME -> normal read */
+ msg_Err( p_input, "mmap failed" );
+ goto failed;
+ }
+
+ p_sys->p_video_frame = NULL;
+
+ /* 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 = VIDEO_PALETTE_YUV420P;
+ p_sys->i_chroma = VLC_FOURCC( 'I', '4', '2', '0' );
+ if( ioctl( p_sys->fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
+ {
+ msg_Warn( p_input, "%4.4s refused", (char*)&p_sys->i_chroma );
+
+ p_sys->vid_mmap.format = VIDEO_PALETTE_YUV422P;
+ p_sys->i_chroma = VLC_FOURCC( 'I', '4', '2', '2' );
+
+ if( ioctl( p_sys->fd, VIDIOCMCAPTURE, &p_sys->vid_mmap ) < 0 )
+ {
+ msg_Warn( p_input, "%4.4s refused", (char*)&p_sys->i_chroma );
+
+ msg_Err( p_input, "chroma selection failed" );
+ goto failed;
+ }
+ else
+ {
+ p_sys->i_video_frame_size = p_sys->i_width * p_sys->i_height * 2;
+ }
+ }
+ else
+ {
+ p_sys->i_video_frame_size = p_sys->i_width * p_sys->i_height * 3 / 2;
+ }
+ /* encoder part */
+ if( p_sys->i_codec != VLC_FOURCC( 0, 0, 0, 0 ) )
+ {
+ msg_Dbg( p_input,
+ "need a rencoder from %4.4s to %4.4s",
+ (char*)&p_sys->i_chroma,
+ (char*)&p_sys->i_codec );
+#define p_enc p_sys->p_encoder
+ p_enc = vlc_object_create( p_input, sizeof( video_encoder_t ) );
+ p_enc->i_codec = p_sys->i_codec;
+ p_enc->i_chroma= p_sys->i_chroma;
+ p_enc->i_width = p_sys->i_width;
+ p_enc->i_height= p_sys->i_height;
+ p_enc->i_aspect= 0;
+
+
+ p_enc->p_module = module_Need( p_enc,
+ "video encoder",
+ "$video-encoder" );
+ if( !p_enc->p_module )
+ {
+ msg_Warn( p_input,
+ "no suitable encoder to %4.4s",
+ (char*)&p_enc->i_codec );
+ vlc_object_destroy( p_enc );
+ goto failed;
+ }
+
+ /* *** init the codec *** */
+ if( p_enc->pf_init( p_enc ) )
+ {
+ msg_Err( p_input, "failed to initialize video encoder plugin" );
+ vlc_object_destroy( p_enc );
+ goto failed;
+ }
+
+ /* *** alloacted buffer *** */
+ if( p_enc->i_buffer_size <= 0 )
+ {
+ p_enc->i_buffer_size = 10 * p_enc->i_width * p_enc->i_height;
+ }
+ p_sys->i_video_frame_size = p_enc->i_buffer_size;
+ p_sys->i_video_frame_size_allocated = p_enc->i_buffer_size;
+ if( !( p_sys->p_video_frame = malloc( p_enc->i_buffer_size ) ) )
+ {
+ msg_Err( p_input, "out of memory" );
+ goto failed;
+ }
+
+ switch( p_sys->i_chroma )
+ {
+ case VLC_FOURCC( 'I', '4', '2', '0' ):
+ p_sys->pic.i_planes = 3;
+ p_sys->pic.p[0].i_pitch = p_sys->i_width;
+ p_sys->pic.p[0].i_lines = p_sys->i_height;
+ p_sys->pic.p[0].i_pixel_pitch = 1;
+ p_sys->pic.p[0].i_visible_pitch = p_sys->i_width;
+
+ p_sys->pic.p[1].i_pitch = p_sys->i_width / 2;
+ p_sys->pic.p[1].i_lines = p_sys->i_height / 2;
+ p_sys->pic.p[1].i_pixel_pitch = 1;
+ p_sys->pic.p[1].i_visible_pitch = p_sys->i_width / 2;
+
+ p_sys->pic.p[2].i_pitch = p_sys->i_width / 2;
+ p_sys->pic.p[2].i_lines = p_sys->i_height / 2;
+ p_sys->pic.p[2].i_pixel_pitch = 1;
+ p_sys->pic.p[2].i_visible_pitch = p_sys->i_width / 2;
+ break;
+ default:
+ msg_Err( p_input, "unsuported chroma" );
+ vlc_object_destroy( p_enc );
+ goto failed;
+ }
+#undef p_enc
+ }
+ else
+ {
+ p_sys->i_codec = p_sys->i_chroma;
+ p_sys->p_encoder = NULL;
+ }
+
- p_input->pf_read = V4lRead;
- p_input->pf_seek = NULL;
- p_input->pf_set_area = NULL;
+ p_input->pf_read = Read;
+ p_input->pf_seek = NULL;
+ p_input->pf_set_area = NULL;
p_input->pf_set_program = NULL;
+ p_input->p_access_data = p_sys;
+
vlc_mutex_lock( &p_input->stream.stream_lock );
p_input->stream.b_pace_control = 0;
p_input->stream.b_seekable = 0;
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 */
+ p_input->i_pts_delay = config_GetInt( p_input, "v4l-caching" ) * 1000;
- return 0;
+ msg_Info( p_input, "v4l grabbing started" );
+
+ /* create header */
+ p_sys->i_header_size = 8 + 20;
+ p_sys->i_header_pos = 0;
+ p_sys->p_header = malloc( p_sys->i_header_size );
+
+ memcpy( &p_sys->p_header[0], ".v4l", 4 );
+ SetDWBE( &p_sys->p_header[4], 1 );
+
+ memcpy( &p_sys->p_header[ 8], "vids", 4 );
+ memcpy( &p_sys->p_header[12], &p_sys->i_codec, 4 );
+ SetDWBE( &p_sys->p_header[16], p_sys->i_width );
+ SetDWBE( &p_sys->p_header[20], p_sys->i_height );
+ SetDWBE( &p_sys->p_header[24], 0 );
+
+#ifdef _V4L_AUDIO_
+ 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], 2 );
+
+ memcpy( &p_sys->p_header[28], "auds", 4 );
+ memcpy( &p_sys->p_header[32], "araw", 4 );
+ SetDWBE( &p_sys->p_header[36], p_sys->b_stereo ? 2 : 1 );
+ SetDWBE( &p_sys->p_header[40], p_sys->i_sample_rate );
+ SetDWBE( &p_sys->p_header[44], 16 );
+ }
+#endif
+ return VLC_SUCCESS;
+
+failed:
+ free( p_sys->psz_video_device );
+ if( p_sys->fd >= 0 )
+ {
+ close( p_sys->fd );
+ }
+ free( p_sys );
+ return VLC_EGENERIC;
}
/*****************************************************************************
* V4lClose: close device
*****************************************************************************/
-static void V4lClose( vlc_object_t *p_this )
+static void AccessClose( vlc_object_t *p_this )
{
- input_thread_t * p_input = (input_thread_t *)p_this;
- //thread_data_t *p_data = (thread_data_t *)p_input->p_access_data;
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ access_sys_t *p_sys = p_input->p_access_data;
+
+ msg_Info( p_input, "v4l grabbing stoped" );
+
+ free( p_sys->psz_video_device );
+ close( p_sys->fd );
+
+ if( p_sys->p_encoder )
+ {
+ p_sys->p_encoder->pf_end( p_sys->p_encoder );
- //close( p_data->i_handle );
- close( i_fd );
- //free( p_data );
+ module_Unneed( p_sys->p_encoder,
+ p_sys->p_encoder->p_module );
+ vlc_object_destroy( p_sys->p_encoder );
+
+ free( p_sys->p_video_frame );
+ }
+ free( p_sys );
+}
+
+#ifdef _V4L_AUDIO_
+static int GrabAudio( input_thread_t * p_input,
+ uint8_t **pp_data,
+ int *pi_data )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+ fd_set fds;
+ struct timeval timeout;
+ int i_ret;
+ int i_read;
+
+ /* we first try to get an audio frame */
+ FD_ZERO( &fds );
+ FD_SET( p_sys->fd_audio, &fds );
+
+ timeout.tv_sec = 0;
+ timeout.tv_usec = 0;
+
+ i_ret = select( p_sys->fd_audio + 1, &fds, NULL, NULL, &timeout );
+
+ if( i_ret < 0 && errno != EINTR )
+ {
+ msg_Warn( p_input, "audio select failed" );
+ return VLC_EGENERIC;
+ }
+
+ if( !FD_ISSET( p_sys->fd_audio , &fds) )
+ {
+ return VLC_EGENERIC;
+ }
+
+ 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;
+
+
+ *pp_data = p_sys->p_audio_frame;
+ *pi_data = p_sys->i_audio_frame_size;
+ return VLC_SUCCESS;
+}
+#endif
+
+static int GrabVideo( input_thread_t * p_input,
+ uint8_t **pp_data,
+ int *pi_data )
+{
+ 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, VIDIOCMCAPTURE, &p_sys->vid_mmap ) >= 0 )
+ {
+ break;
+ }
+
+ if( errno != EAGAIN )
+ {
+ msg_Err( p_input, "failed while grabbing new frame" );
+ return( -1 );
+ }
+ msg_Dbg( p_input, "another try ?" );
+ }
+
+ //msg_Warn( p_input, "grab a new frame" );
+
+ while( ioctl(p_sys->fd, VIDIOCSYNC, &p_sys->i_frame_pos) < 0 &&
+ ( errno == EAGAIN || errno == EINTR ) );
+
+
+ p_sys->i_frame_pos = p_sys->vid_mmap.frame;
+
+ if( p_sys->p_encoder )
+ {
+ p_sys->pic.p[0].p_pixels = p_sys->p_video_mmap + p_sys->vid_mbuf.offsets[p_sys->i_frame_pos];
+ p_sys->pic.p[1].p_pixels = p_sys->pic.p[0].p_pixels +
+ p_sys->pic.p[0].i_pitch * p_sys->pic.p[0].i_lines;
+ p_sys->pic.p[2].p_pixels = p_sys->pic.p[1].p_pixels +
+ p_sys->pic.p[1].i_pitch * p_sys->pic.p[1].i_lines;
+
+ p_sys->i_video_frame_size = p_sys->i_video_frame_size_allocated;
+ p_sys->p_encoder->pf_encode( p_sys->p_encoder,
+ &p_sys->pic,
+ p_sys->p_video_frame,
+ &p_sys->i_video_frame_size );
+ }
+ else
+ {
+ p_sys->p_video_frame = p_sys->p_video_mmap + p_sys->vid_mbuf.offsets[p_sys->i_frame_pos];
+ }
+
+ *pp_data = p_sys->p_video_frame;
+ *pi_data = p_sys->i_video_frame_size;
+ 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;
+
+ msg_Info( p_input, "access read" );
+ while( i_len > 0 )
+ {
+
+ /* First copy header if any */
+ if( i_len > 0 && 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;
-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;
+ p_buffer += i_copy;
+ i_len -= i_copy;
+ i_data += i_copy;
+ }
- char *map = NULL;
+ if( i_len <= 0 )
+ {
+ return( i_data );
+ }
- //thread_data_t * p_data;
- int i_read = 0;
+ /* re fill data by grabbing audio/video */
+ p_sys->i_data_pos = 0;
- if( ioctl( i_fd, VIDIOCGCAP, &vid_caps ) == -1 )
+ /* try grabbing audio frames */
+#ifdef _V4L_AUDIO_
+ i_stream = 1;
+ if( p_sys->fd_audio < 0 || GrabAudio( p_input, &p_sys->p_data, &p_sys->i_data_size ) )
+ {
+ /* and then get video frame if no audio */
+ i_stream = 0;
+ if( GrabVideo( p_input, &p_sys->p_data, &p_sys->i_data_size ) )
+ {
+ return -1;
+ }
+ }
+#else
+ /* and then get video frame if no audio */
+ i_stream = 0;
+ if( GrabVideo( p_input, &p_sys->p_data, &p_sys->i_data_size ) )
+ {
+ return -1;
+ }
+#endif
+
+ /* create pseudo header */
+ p_sys->i_header_size = 8;
+ 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 );
+ }
+
+ return i_data;
+}
+
+/****************************************************************************
+ * I. Demux Part
+ ****************************************************************************/
+#define MAX_PACKETS_IN_FIFO 3
+
+static int DemuxOpen ( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ //demux_sys_t *p_sys;
+
+ uint8_t *p_peek;
+ int i_streams;
+ int i;
+
+ data_packet_t *p_pk;
+
+ /* Initialize access plug-in structures. */
+ if( p_input->i_mtu == 0 )
{
- printf("ioctl (VIDIOCGCAP) failed\n");
- return 0;
+ /* Improve speed. */
+ p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE ;
+ }
+
+ /* a little test to see if it's a v4l stream */
+ if( input_Peek( p_input, &p_peek, 8 ) < 8 )
+ {
+ msg_Warn( p_input, "v4l plugin discarded (cannot peek)" );
+ return( VLC_EGENERIC );
+ }
+
+ if( strncmp( p_peek, ".v4l", 4 ) || GetDWBE( &p_peek[4] ) <= 0 )
+ {
+ msg_Warn( p_input, "v4l plugin discarded (not a valid stream)" );
+ return VLC_EGENERIC;
+ }
+
+ /* create one program */
+ 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 );
+ }
+ if( input_AddProgram( p_input, 0, 0) == NULL )
+ {
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+ msg_Err( p_input, "cannot add program" );
+ return( VLC_EGENERIC );
}
- if( ioctl( i_fd, VIDIOCGMBUF, &vid_buf ) == -1 )
+ p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
+ p_input->stream.i_mux_rate = 0;
+
+ i_streams = GetDWBE( &p_peek[4] );
+ if( input_Peek( p_input, &p_peek, 8 + 20 * i_streams ) < 8 + 20 * i_streams )
{
- // 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_streams; i++ )
+ {
+ es_descriptor_t *p_es;
+
+
+ p_es = input_AddES( p_input, p_input->stream.pp_programs[0], i + 1, 0 );
+ p_es->i_stream_id = i + 1;
+ if( !strncmp( p_peek, "auds", 4 ) )
+ {
+#define wf ((WAVEFORMATEX*)p_es->p_waveformatex)
+ p_es->i_cat = AUDIO_ES;
+ p_es->i_fourcc = VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] );
+ p_es->p_waveformatex= malloc( sizeof( WAVEFORMATEX ) );
+
+ wf->wFormatTag = WAVE_FORMAT_UNKNOWN;
+ wf->nChannels = GetDWBE( &p_peek[8] );
+ wf->nSamplesPerSec = GetDWBE( &p_peek[12] );
+ wf->wBitsPerSample = GetDWBE( &p_peek[16] );
+ wf->nBlockAlign = wf->wBitsPerSample * wf->nChannels / 8;
+ wf->nAvgBytesPerSec = wf->nBlockAlign * wf->nSamplesPerSec;
+ wf->cbSize = 0;
+
+ msg_Dbg( p_input, "added new audio es %d channels %dHz",
+ wf->nChannels,
+ wf->nSamplesPerSec );
+
+ input_SelectES( p_input, p_es );
+#undef wf
+ }
+ else if( !strncmp( p_peek, "vids", 4 ) )
{
- free (map);
- return (NULL);
+#define bih ((BITMAPINFOHEADER*)p_es->p_bitmapinfoheader)
+ p_es->i_cat = VIDEO_ES;
+ p_es->i_fourcc = VLC_FOURCC( p_peek[4], p_peek[5], p_peek[6], p_peek[7] );
+
+ p_es->p_bitmapinfoheader = malloc( sizeof( BITMAPINFOHEADER ) );
+
+ bih->biSize = sizeof( BITMAPINFOHEADER );
+ bih->biWidth = GetDWBE( &p_peek[8] );
+ bih->biHeight = GetDWBE( &p_peek[12] );
+ bih->biPlanes = 0;
+ bih->biBitCount = 0;
+ bih->biCompression = 0;
+ bih->biSizeImage= 0;
+ bih->biXPelsPerMeter = 0;
+ bih->biYPelsPerMeter = 0;
+ bih->biClrUsed = 0;
+ bih->biClrImportant = 0;
+
+ msg_Dbg( p_input, "added new video es %4.4s %dx%d",
+ (char*)&p_es->i_fourcc,
+ bih->biWidth,
+ bih->biHeight );
+
+ input_SelectES( p_input, p_es );
+#undef bih
}
- *size = 0;
- return (map);
+
+ p_peek += 20;
+ }
+
+ p_input->stream.p_selected_program->b_is_ok = 1;
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+ if( input_SplitBuffer( p_input, &p_pk, 8 + i_streams * 20 ) > 0 )
+ {
+ input_DeletePacket( p_input->p_method_data, p_pk );
}
- //p_data = (thread_data_t *)p_input->p_access_data;
- return i_read;
+ p_input->pf_demux = Demux;
+ return VLC_SUCCESS;
}
+static void DemuxClose ( vlc_object_t *p_this )
+{
+ return;
+}
+
+
+static int Demux ( input_thread_t *p_input )
+{
+ es_descriptor_t *p_es;
+ pes_packet_t *p_pes;
+
+ int i_stream;
+ int i_size;
+ uint8_t *p_peek;
+
+ if( input_Peek( p_input, &p_peek, 8 ) < 8 )
+ {
+ msg_Warn( p_input, "cannot peek (EOF ?)" );
+ return( 0 );
+ }
+
+ i_stream = GetDWBE( &p_peek[0] );
+ i_size = GetDWBE( &p_peek[4] );
+
+ msg_Dbg( p_input, "stream=%d size=%d", i_stream, i_size );
+// p_es = input_FindES( p_input, i_stream );
+ p_es = p_input->stream.p_selected_program->pp_es[i_stream];
+
+ if( p_es == NULL || p_es->p_decoder_fifo == NULL )
+ {
+ msg_Err( p_input, "cannot find decoder" );
+ return 0;
+ }
+
+ p_pes = input_NewPES( p_input->p_method_data );
+ if( p_pes == NULL )
+ {
+ msg_Warn( p_input, "cannot allocate PES" );
+ msleep( 1000 );
+ return( 1 );
+ }
+ i_size += 8;
+ while( i_size > 0 )
+ {
+ data_packet_t *p_data;
+ int i_read;
+
+ if( (i_read = input_SplitBuffer( p_input,
+ &p_data,
+ __MIN( i_size, 10000 ) ) ) <= 0 )
+ {
+ input_DeletePES( p_input->p_method_data, p_pes );
+ return( 0 );
+ }
+ if( !p_pes->p_first )
+ {
+ p_pes->p_first = p_data;
+ p_pes->i_nb_data = 1;
+ p_pes->i_pes_size = i_read;
+ }
+ else
+ {
+ p_pes->p_last->p_next = p_data;
+ p_pes->i_nb_data++;
+ p_pes->i_pes_size += i_read;
+ }
+ p_pes->p_last = p_data;
+ i_size -= i_read;
+ }
+// input_SplitBuffer( p_input, &p_pk, i_size + 8 );
+ p_pes->p_first->p_payload_start += 8;
+
+ vlc_mutex_lock( &p_es->p_decoder_fifo->data_lock );
+ if( p_es->p_decoder_fifo->i_depth >= MAX_PACKETS_IN_FIFO )
+ {
+ /* Wait for the decoder. */
+ vlc_cond_wait( &p_es->p_decoder_fifo->data_wait, &p_es->p_decoder_fifo->data_lock );
+ }
+ vlc_mutex_unlock( &p_es->p_decoder_fifo->data_lock );
+
+ p_pes->i_pts = mdate() + p_input->i_pts_delay;
+
+ input_DecodePES( p_es->p_decoder_fifo, p_pes );
+
+ return 1;
+}
--- /dev/null
+/*****************************************************************************
+ * rawvideo.c: Pseudo audio decoder; for raw video data
+ *****************************************************************************
+ * Copyright (C) 2001, 2002 VideoLAN
+ * $Id: rawvideo.c,v 1.1 2003/03/31 03:46:11 fenrir Exp $
+ *
+ * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ *
+ * 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
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <vlc/vlc.h>
+#include <vlc/vout.h>
+#include <vlc/decoder.h>
+#include <vlc/input.h>
+
+#include <stdlib.h> /* malloc(), free() */
+#include <string.h> /* strdup() */
+#include "codecs.h"
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+
+typedef struct
+{
+ /* Input properties */
+ decoder_fifo_t *p_fifo;
+ int i_raw_size;
+
+ /* Output properties */
+
+ mtime_t pts;
+
+ vout_thread_t *p_vout;
+
+} vdec_thread_t;
+
+static int OpenDecoder ( vlc_object_t * );
+
+static int RunDecoder ( decoder_fifo_t * );
+static int InitThread ( vdec_thread_t * );
+static void DecodeThread ( vdec_thread_t * );
+static void EndThread ( vdec_thread_t * );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+
+vlc_module_begin();
+ set_description( _("Pseudo Raw Video decoder") );
+ set_capability( "decoder", 50 );
+ set_callbacks( OpenDecoder, NULL );
+vlc_module_end();
+
+
+/*****************************************************************************
+ * OpenDecoder: probe the decoder and return score
+ *****************************************************************************
+ * Tries to launch a decoder and return score so that the interface is able
+ * to choose.
+ *****************************************************************************/
+static int OpenDecoder( vlc_object_t *p_this )
+{
+ decoder_fifo_t *p_fifo = (decoder_fifo_t*) p_this;
+
+ switch( p_fifo->i_fourcc )
+ {
+ case VLC_FOURCC('I','4','2','0'):
+ case VLC_FOURCC('I','4','2','2'):
+ p_fifo->pf_run = RunDecoder;
+ return VLC_SUCCESS;
+
+ default:
+ return VLC_EGENERIC;
+ }
+
+}
+
+/*****************************************************************************
+ * RunDecoder: this function is called just after the thread is created
+ *****************************************************************************/
+static int RunDecoder( decoder_fifo_t *p_fifo )
+{
+ vdec_thread_t *p_vdec;
+ int b_error;
+
+ if( !( p_vdec = malloc( sizeof( vdec_thread_t ) ) ) )
+ {
+ msg_Err( p_fifo, "out of memory" );
+ DecoderError( p_fifo );
+ return( -1 );
+ }
+ memset( p_vdec, 0, sizeof( vdec_thread_t ) );
+
+ p_vdec->p_fifo = p_fifo;
+
+ if( InitThread( p_vdec ) != 0 )
+ {
+ DecoderError( p_fifo );
+ return( -1 );
+ }
+
+ while( ( !p_vdec->p_fifo->b_die )&&( !p_vdec->p_fifo->b_error ) )
+ {
+ DecodeThread( p_vdec );
+ }
+
+
+ if( ( b_error = p_vdec->p_fifo->b_error ) )
+ {
+ DecoderError( p_vdec->p_fifo );
+ }
+
+ EndThread( p_vdec );
+ if( b_error )
+ {
+ return( -1 );
+ }
+
+ return( 0 );
+}
+
+
+#define FREE( p ) if( p ) { free( p ); p = NULL; }
+
+
+/*****************************************************************************
+ * InitThread: initialize data before entering main loop
+ *****************************************************************************/
+static int InitThread( vdec_thread_t * p_vdec )
+{
+ vlc_fourcc_t i_chroma;
+
+#define bih ((BITMAPINFOHEADER*)p_vdec->p_fifo->p_bitmapinfoheader)
+ if( bih == NULL )
+ {
+ msg_Err( p_vdec->p_fifo,
+ "info missing, fatal" );
+ return( VLC_EGENERIC );
+ }
+ if( bih->biWidth <= 0 || bih->biHeight <= 0 )
+ {
+ msg_Err( p_vdec->p_fifo,
+ "invalid display size %dx%d",
+ bih->biWidth, bih->biHeight );
+ return( VLC_EGENERIC );
+ }
+
+ switch( p_vdec->p_fifo->i_fourcc )
+ {
+ case VLC_FOURCC( 'I', '4', '2', '0' ):
+ i_chroma = VLC_FOURCC( 'I', '4', '2', '0' );
+ p_vdec->i_raw_size = bih->biWidth * bih->biHeight * 3 / 2;
+ break;
+ default:
+ msg_Err( p_vdec->p_fifo, "invalid codec=%4.4s", (char*)&p_vdec->p_fifo->i_fourcc );
+ return( VLC_EGENERIC );
+ }
+
+ p_vdec->p_vout = vout_Request( p_vdec->p_fifo, NULL,
+ bih->biWidth, bih->biHeight,
+ i_chroma,
+ VOUT_ASPECT_FACTOR * bih->biWidth / bih->biHeight );
+
+ if( p_vdec->p_vout == NULL )
+ {
+ msg_Err( p_vdec->p_fifo, "failled created vout" );
+ return( VLC_EGENERIC );
+ }
+
+ return( VLC_SUCCESS );
+#undef bih
+}
+
+
+static void FillPicture( pes_packet_t *p_pes, picture_t *p_pic )
+{
+ int i_plane;
+
+ data_packet_t *p_data;
+ uint8_t *p_src;
+ int i_src;
+
+ p_data = p_pes->p_first;
+ p_src = p_data->p_payload_start;
+ i_src = p_data->p_payload_end - p_data->p_payload_start;
+
+ for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
+ {
+
+ uint8_t *p_dst;
+ int i_dst;
+
+ p_dst = p_pic->p[i_plane].p_pixels;
+ i_dst = p_pic->p[i_plane].i_pitch * p_pic->p[i_plane].i_lines;
+
+ while( i_dst > 0 )
+ {
+ int i_copy;
+
+ i_copy = __MIN( i_src, i_dst );
+ if( i_copy > 0 )
+ {
+ memcpy( p_dst, p_src, i_copy );
+ }
+ i_dst -= i_copy;
+
+ i_src -= i_copy;
+ if( i_src <= 0 )
+ {
+ do
+ {
+ p_data = p_data->p_next;
+ if( p_data == NULL )
+ {
+ return;
+ }
+ p_src = p_data->p_payload_start;
+ i_src = p_data->p_payload_end - p_data->p_payload_start;
+ } while( i_src <= 0 );
+ }
+ }
+ }
+}
+
+/*****************************************************************************
+ * DecodeThread: decodes a frame
+ *****************************************************************************/
+static void DecodeThread( vdec_thread_t *p_vdec )
+{
+ int i_size;
+ pes_packet_t *p_pes;
+ picture_t *p_pic;
+
+ /* **** get frame **** */
+ input_ExtractPES( p_vdec->p_fifo, &p_pes );
+ if( !p_pes )
+ {
+ p_vdec->p_fifo->b_error = 1;
+ return;
+ }
+ i_size = p_pes->i_pes_size;
+
+ if( i_size < p_vdec->i_raw_size )
+ {
+ msg_Warn( p_vdec->p_fifo, "invalid frame size (%d < %d)", i_size, p_vdec->i_raw_size );
+ input_DeletePES( p_vdec->p_fifo->p_packets_mgt, p_pes );
+ return;
+ }
+
+ /* **** get video picture **** */
+ while( !(p_pic = vout_CreatePicture( p_vdec->p_vout, 0, 0, 0 ) ) )
+ {
+ if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error )
+ {
+ return;
+ }
+ msleep( VOUT_OUTMEM_SLEEP );
+ }
+
+
+ /* **** fill p_pic **** */
+ FillPicture( p_pes, p_pic );
+
+ /* **** display p_pic **** */
+ vout_DatePicture( p_vdec->p_vout, p_pic, p_pes->i_pts);
+ vout_DisplayPicture( p_vdec->p_vout, p_pic );
+
+
+ input_DeletePES( p_vdec->p_fifo->p_packets_mgt, p_pes );
+}
+
+
+/*****************************************************************************
+ * EndThread : faad decoder thread destruction
+ *****************************************************************************/
+static void EndThread (vdec_thread_t *p_vdec)
+{
+ if( p_vdec->p_vout )
+ {
+ vout_Request( p_vdec->p_fifo, p_vdec->p_vout, 0, 0, 0, 0 );
+ }
+
+ msg_Dbg( p_vdec->p_fifo, "raw video decoder closed" );
+
+ free( p_vdec );
+}
+
+
projects / vlc / commitdiff