* modules/demux/rawdv.c: new raw dv demuxer (only video for now). I
authorGildas Bazin <gbazin@videolan.org>
Tue, 17 Dec 2002 21:15:43 +0000 (21:15 +0000)
committerGildas Bazin <gbazin@videolan.org>
Tue, 17 Dec 2002 21:15:43 +0000 (21:15 +0000)
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.

configure.ac.in
modules/demux/Modules.am
modules/demux/rawdv.c [new file with mode: 0644]

index 1558101..9b68b0c 100644 (file)
@@ -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}"
index c03a994..a36c606 100644 (file)
@@ -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
diff --git a/modules/demux/rawdv.c b/modules/demux/rawdv.c
new file mode 100644 (file)
index 0000000..ba37b0e
--- /dev/null
@@ -0,0 +1,368 @@
+/*****************************************************************************
+ * 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;
+}