Commit d5d568e2 authored by Gildas Bazin's avatar Gildas Bazin

* modules/demux/rawdv.c: new raw dv demuxer (only video for now). I

didn't find a way to detect correctly a raw dv file so for now we just
check the file extension (.dv). You can additionaly force this demuxer.

PS: the ffmpeg plugin works quite well for decoding dv videos.
parent 3355ba5c
......@@ -1287,6 +1287,16 @@ then
],[])
fi
dnl
dnl raw dv demux plugin
dnl
AC_ARG_ENABLE(rawdv,
[ --enable-rawdv raw dv demux module (default enabled)])
if test "x${enable_rawdv}" != "xno"
then
PLUGINS="${PLUGINS} rawdv"
fi
dnl
dnl Codec plugins
dnl
......@@ -2264,7 +2274,7 @@ then
then
AC_MSG_ERROR([Your development package for wxWindows is too old, you need at least version 2.3.0. Please upgrade and try again. Alternatively you can also configure with --disable-wxwindows.])
fi
CXXFLAGS_wxwindows="${CXXFLAGS_wxwindows} `${WX_CONFIG} --cflags`"
CXXFLAGS_wxwindows="${CXXFLAGS_wxwindows} `${WX_CONFIG} --cxxflags`"
LDFLAGS_wxwindows="${LDFLAGS_wxwindows} `${WX_CONFIG} --libs`"
# now look for the wxprec.h header
CPPFLAGS="${save_CPPFLAGS} ${CXXFLAGS_wxwindows}"
......
......@@ -2,3 +2,4 @@ SOURCES_a52sys = modules/demux/a52sys.c
SOURCES_ogg = modules/demux/ogg.c
SOURCES_m3u = modules/demux/m3u.c
SOURCES_demuxdump = modules/demux/demuxdump.c
SOURCES_rawdv = modules/demux/rawdv.c
/*****************************************************************************
* rawdv.c : raw dv input module for vlc
*****************************************************************************
* Copyright (C) 2001 VideoLAN
* $Id: rawdv.c,v 1.1 2002/12/17 21:15:43 gbazin Exp $
*
* Authors: 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
* 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 <stdlib.h> /* malloc(), free() */
#include <string.h> /* strdup() */
#include <errno.h>
#include <vlc/vlc.h>
#include <vlc/input.h>
#include <sys/types.h>
#include <codecs.h> /* BITMAPINFOHEADER, WAVEFORMATEX */
/*****************************************************************************
A little bit of background information (copied over from libdv glossary).
- DIF block: A block of 80 bytes. This is the basic data framing unit of the
DVC tape format, analogous to sectors of hard disc.
- Video Section: Each DIF sequence contains a video section, consisting of
135 DIF blocks, which are further subdivided into Video Segments.
- Video Segment: A video segment consists of 5 DIF blocks, each corresponding
to a single compressed macroblock.
*****************************************************************************/
/*****************************************************************************
* Constants
*****************************************************************************/
#define DV_PAL_FRAME_SIZE 144000
#define DV_NTSC_FRAME_SIZE 122000
/*****************************************************************************
* Definitions of structures used by this plugin
*****************************************************************************/
typedef struct {
int8_t sct; /* Section type (header,subcode,aux,audio,video) */
int8_t dsn; /* DIF sequence number (0-12) */
int fsc; /* First (0)/Second channel (1) */
int8_t dbn; /* DIF block number (0-134) */
} dv_id_t;
typedef struct {
int dsf; /* DIF sequence flag: 525/60 (0) or 625,50 (1) */
int8_t apt;
int tf1;
int8_t ap1;
int tf2;
int8_t ap2;
int tf3;
int8_t ap3;
} dv_header_t;
struct demux_sys_t
{
int frame_size;
es_descriptor_t *p_video_es;
es_descriptor_t *p_audio_es;
/* codec specific stuff */
BITMAPINFOHEADER *p_bih;
double f_rate;
int i_bitrate;
/* program clock reference (in units of 90kHz) */
mtime_t i_pcr;
};
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Activate ( vlc_object_t * );
static void Deactivate( vlc_object_t * );
static int Demux ( input_thread_t * );
static uint32_t GetDWBE( uint8_t *p_buff )
{
return (uint32_t)p_buff[3] | ( ((uint32_t)p_buff[2]) << 8 ) |
( ((uint32_t)p_buff[1]) << 16 ) | ( ((uint32_t)p_buff[0]) << 24 );
}
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("raw dv demux") );
set_capability( "demux", 2 );
set_callbacks( Activate, NULL );
add_shortcut( "rawdv" );
vlc_module_end();
/*****************************************************************************
* Activate: initializes raw dv demux structures
*****************************************************************************/
static int Activate( vlc_object_t * p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
byte_t *p_peek;
uint32_t i_dword;
demux_sys_t *p_rawdv;
dv_header_t dv_header;
dv_id_t dv_id;
char *psz_ext;
/* It isn't easy to recognize a raw dv stream. The chances that we'll
* mistake a stream from another type for a raw dv stream are too high, so
* we'll rely on the file extension to trigger this demux. Alternatively,
* it is possible to force this demux. */
/* Check for dv file extension */
psz_ext = strrchr ( p_input->psz_name, '.' );
if( strcasecmp( psz_ext, ".dv") &&
( !p_input->psz_demux || strcmp(p_input->psz_demux, "rawdv") ) )
{
return -1;
}
p_input->pf_demux = Demux;
/* Have a peep at the show. */
if( input_Peek(p_input, &p_peek, DV_PAL_FRAME_SIZE) < DV_NTSC_FRAME_SIZE )
{
/* Stream too short ... */
msg_Err( p_input, "cannot peek()" );
return -1;
}
/* fill in the dv_id_t structure */
i_dword = GetDWBE( p_peek ); p_peek += 4;
dv_id.sct = i_dword >> (32 - 3);
i_dword <<= 8;
dv_id.dsn = i_dword >> (32 - 4);
i_dword <<= 4;
dv_id.fsc = i_dword >> (32 - 1);
i_dword <<= 4;
dv_id.dbn = i_dword >> (32 - 8);
i_dword <<= 8;
if( dv_id.sct != 0 )
{
msg_Warn( p_input, "not a raw dv stream header" );
return -1;
}
/* fill in the dv_header_t structure */
dv_header.dsf = i_dword >> (32 - 1);
i_dword <<= 1;
if( i_dword >> (32 - 1) ) /* incorrect bit */
{
msg_Warn( p_input, "incorrect bit" );
return -1;
}
i_dword = GetDWBE( p_peek ); p_peek += 4;
i_dword <<= 5;
dv_header.apt = i_dword >> (32 - 3);
i_dword <<= 3;
dv_header.tf1 = i_dword >> (32 - 1);
i_dword <<= 5;
dv_header.ap1 = i_dword >> (32 - 3);
i_dword <<= 3;
dv_header.tf2 = i_dword >> (32 - 1);
i_dword <<= 5;
dv_header.ap2 = i_dword >> (32 - 3);
i_dword <<= 3;
dv_header.tf3 = i_dword >> (32 - 1);
i_dword <<= 5;
dv_header.ap3 = i_dword >> (32 - 3);
p_peek += 72; /* skip rest of DIF block */
/* Setup the structures for our demuxer */
if( !( p_rawdv = malloc( sizeof( demux_sys_t ) ) ) )
{
msg_Err( p_input, "out of memory" );
return -1;
}
memset( p_rawdv, 0, sizeof( demux_sys_t ) );
p_rawdv->p_bih = NULL;
p_input->p_demux_data = p_rawdv;
p_rawdv->p_bih = (BITMAPINFOHEADER *) malloc( sizeof(BITMAPINFOHEADER) );
if( !p_rawdv->p_bih )
{
msg_Err( p_input, "out of memory" );
goto error;
}
p_rawdv->p_bih->biSize = sizeof(BITMAPINFOHEADER);
p_rawdv->p_bih->biCompression = VLC_FOURCC( 'd','v','s','d' );
p_rawdv->p_bih->biSize = 40;
p_rawdv->p_bih->biWidth = 720;
p_rawdv->p_bih->biHeight = dv_header.dsf ? 576 : 480;
p_rawdv->p_bih->biPlanes = 1;
p_rawdv->p_bih->biBitCount = 24;
p_rawdv->p_bih->biSizeImage =
p_rawdv->p_bih->biWidth * p_rawdv->p_bih->biHeight
* (p_rawdv->p_bih->biBitCount >> 3);
/* Properties of our video */
if( dv_header.dsf )
{
p_rawdv->frame_size = 12 * 150 * 80;
p_rawdv->f_rate = 25;
}
else
{
p_rawdv->frame_size = 10 * 150 * 80;
p_rawdv->f_rate = 29.97;
}
/* necessary because input_SplitBuffer() will only get
* INPUT_DEFAULT_BUFSIZE bytes at a time. */
p_input->i_bufsize = p_rawdv->frame_size;
/* 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" );
goto error;
}
if( input_AddProgram( p_input, 0, 0) == NULL )
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
msg_Err( p_input, "cannot add program" );
goto error;
}
p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
p_input->stream.i_mux_rate = p_rawdv->frame_size * p_rawdv->f_rate;
vlc_mutex_unlock( &p_input->stream.stream_lock );
/* Add video stream */
vlc_mutex_lock( &p_input->stream.stream_lock );
p_rawdv->p_video_es = input_AddES( p_input,
p_input->stream.p_selected_program,
1, 0 );
p_rawdv->p_video_es->i_stream_id = 0;
p_rawdv->p_video_es->i_fourcc = VLC_FOURCC( 'd','v','s','d' );
p_rawdv->p_video_es->i_cat = VIDEO_ES;
p_rawdv->p_video_es->p_demux_data = (void *)p_rawdv->p_bih;
input_SelectES( p_input, p_rawdv->p_video_es );
vlc_mutex_unlock( &p_input->stream.stream_lock );
/* Init pcr */
p_rawdv->i_pcr = 0;
return 0;
error:
if( p_rawdv->p_bih ) free( p_rawdv->p_bih );
Deactivate( (vlc_object_t *)p_input );
return -1;
}
/*****************************************************************************
* Deactivate: frees unused data
*****************************************************************************/
static void Deactivate( vlc_object_t *p_this )
{
input_thread_t *p_input = (input_thread_t *)p_this;
demux_sys_t *p_rawdv = (demux_sys_t *)p_input->p_demux_data;
free( p_rawdv );
}
/*****************************************************************************
* Demux: reads and demuxes data packets
*****************************************************************************
* Returns -1 in case of error, 0 in case of EOF, 1 otherwise
*****************************************************************************/
static int Demux( input_thread_t * p_input )
{
demux_sys_t *p_rawdv = (demux_sys_t *)p_input->p_demux_data;
decoder_fifo_t *p_fifo =
p_input->stream.p_selected_program->pp_es[0]->p_decoder_fifo;
pes_packet_t *p_pes;
data_packet_t *p_data;
ssize_t i_read;
if( p_fifo == NULL )
{
return -1;
}
if( p_input->stream.p_selected_program->i_synchro_state == SYNCHRO_REINIT )
{
off_t i_pos;
msg_Warn( p_input, "synchro reinit" );
/* If the user tried to seek in the stream, we need to make sure
* the new position is at a DIF block boundary. */
vlc_mutex_lock( &p_input->stream.stream_lock );
i_pos= p_input->stream.p_selected_area->i_tell;
vlc_mutex_unlock( &p_input->stream.stream_lock );
if( (i_pos % p_rawdv->frame_size) &&
p_input->stream.b_seekable &&
p_input->stream.i_method == INPUT_METHOD_FILE )
{
p_input->pf_seek( p_input, (i_pos / p_rawdv->frame_size)
* p_rawdv->frame_size );
input_AccessReinit( p_input );
}
}
/* Call the pace control */
input_ClockManageRef( p_input, p_input->stream.p_selected_program,
p_rawdv->i_pcr );
i_read = input_SplitBuffer( p_input, &p_data, p_rawdv->frame_size );
if( i_read <= 0 )
{
return i_read;
}
p_pes = input_NewPES( p_input->p_method_data );
if( p_pes == NULL )
{
msg_Err( p_input, "out of memory" );
input_DeletePacket( p_input->p_method_data, p_data );
return -1;
}
p_pes->i_rate = p_input->stream.control.i_rate;
p_pes->p_first = p_pes->p_last = p_data;
p_pes->i_pes_size = i_read;
p_pes->i_nb_data = 1;
p_pes->i_pts =
input_ClockGetTS( p_input, p_input->stream.p_selected_program,
p_rawdv->i_pcr );
input_DecodePES( p_fifo, p_pes );
p_rawdv->i_pcr += ( 90000 / p_rawdv->f_rate );
return 1;
}
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