preliminary DVD support using libcss

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@493 b3059339-0415-0410-9bf9-f77b7e298cf2

Makefile

@@ -1,10 +1,8 @@
-# DirectShow support (test code)
-# make -f makefile.DS
-
 # LINUX Makefile made by A'rpi / Astral
 # Some cleanup by LGB: 	* 'make -C dir' instead of 'cd dir;make;cd..'
 #			* for loops instead of linear sequence of make directories
 #			* some minor problems with make clean and distclean were corrected
+#			* DVD support
 
 include config.mak
 
@@ -22,9 +20,9 @@ PRG_CFG = codec-cfg
 prefix = /usr/local
 BINDIR = ${prefix}/bin
 # BINDIR = /usr/local/bin
-SRCS = codec-cfg.c subreader.c linux/getch2.c linux/timer-lx.c linux/shmem.c xa/xa_gsm.c lirc_mp.c cfgparser.c mixer.c
+SRCS = codec-cfg.c subreader.c linux/getch2.c linux/timer-lx.c linux/shmem.c xa/xa_gsm.c lirc_mp.c cfgparser.c mixer.c dvdauth.c
-OBJS = codec-cfg.o subreader.o linux/getch2.o linux/timer-lx.o linux/shmem.o xa/xa_gsm.o lirc_mp.o cfgparser.o mixer.o
+OBJS = codec-cfg.o subreader.o linux/getch2.o linux/timer-lx.o linux/shmem.o xa/xa_gsm.o lirc_mp.o cfgparser.o mixer.o dvdauth.o
-CFLAGS = $(OPTFLAGS) -Iloader -Ilibvo # -Wall
+CFLAGS = $(OPTFLAGS) $(CSS_INC) -Iloader -Ilibvo # -Wall
 A_LIBS = -Lmp3lib -lMP3 -Llibac3 -lac3
 VO_LIBS = -Llibvo -lvo $(X_LIBS)
 
@@ -65,7 +63,7 @@ encore/libencore.a:
 	$(MAKE) -C encore
 
 $(PRG):	.depend mplayer.o $(OBJS) loader/libloader.a loader/DirectShow/libDS_Filter.a libmpeg2/libmpeg2.a opendivx/libdecore.a $(COMMONLIBS) encore/libencore.a
-	$(CC) $(CFLAGS) -o $(PRG) mplayer.o $(OBJS) $(XMM_LIBS) $(LIRC_LIBS) $(A_LIBS) -lm $(TERMCAP_LIB) -Lloader -lloader -Lloader/DirectShow -lDS_Filter -ldl -Llibmpeg2 -lmpeg2 -Lopendivx -ldecore $(VO_LIBS) -Lencore -lencore -lpthread -lstdc++
+	$(CC) $(CFLAGS) -o $(PRG) mplayer.o $(OBJS) $(XMM_LIBS) $(LIRC_LIBS) $(A_LIBS) -lm $(TERMCAP_LIB) -Lloader -lloader -Lloader/DirectShow -lDS_Filter -ldl -Llibmpeg2 -lmpeg2 -Lopendivx -ldecore $(VO_LIBS) $(CSS_LIB) -Lencore -lencore -lpthread -lstdc++
 
 $(PRG_HQ):	.depend mplayerHQ.o $(OBJS) loader/libloader.a libmpeg2/libmpeg2.a opendivx/libdecore.a $(COMMONLIBS) encore/libencore.a
 	$(CC) $(CFLAGS) -o $(PRG_HQ) mplayerHQ.o $(OBJS) $(XMM_LIBS) $(LIRC_LIBS) $(A_LIBS) -lm $(TERMCAP_LIB) -Lloader -lloader -ldl -Llibmpeg2 -lmpeg2 -Lopendivx -ldecore $(VO_LIBS) -Lencore -lencore -lpthread

cfg-mplayer.h

@@ -20,6 +20,13 @@ struct config conf[]={
 	{"dsp", &dsp, CONF_TYPE_STRING, 0, 0, 0},
         {"mixer", &mixer_device, CONF_TYPE_STRING, 0, 0, 0},
         {"master", &mixer_usemaster, CONF_TYPE_FLAG, 0, 0, 1},
+#ifdef HAVE_LIBCSS
+        {"dvd", &dvd_device, CONF_TYPE_STRING, 0, 0, 0},
+#else
+        {"dvd", "DVD support was not compiled in. See file DOCS/DVD.\n",
+            CONF_TYPE_PRINT, CONF_NOCFG, 0 , 0},
+#endif
+			    
 #ifdef HAVE_FBDEV
 	{"fb", &fb_dev_name, CONF_TYPE_STRING, 0, 0, 0},
 	{"fbmode", &fb_mode_name, CONF_TYPE_STRING, 0, 0, 0},

configure

@@ -6,6 +6,9 @@
 #
 # Changes in reversed order:
 #
+# 2001/04/16 by LGB
+#  - added libcss stuffs
+#
 # 2001/04/15 by Pontscho
 #  - added --disable-select option
 #  - added X11DIR variable in config.mak and fix syncfb Makefile -L/usr/X11/lib bug 
@@ -17,7 +20,7 @@
 #  - new option: --cc  (to specify C compiler path+name)
 #
 # 2001/03/08 by LGB:
-#  - DGA detection-o-matic :)
+#  - DGA detect-o-matic :)
 #  - '--disable-dga' option to force disabling DGA vo driver compiling into mplayer
 #  - line about '--enable-dga' is added to the help message
 #
@@ -100,6 +103,8 @@ params:
 
         --with-x11libdir=DIR    X library files are in DIR
         --with-win32libdir=DIR  windows codec files
+        --with-csslibdir=DIR    directory contains libcss.so shared library
+        --with-cssincdir=DIR    directory contains libcss header file (css.h)
 
 	--size-x=SIZE		default screen width
 	--size-y=SIZE		default screen height
@@ -179,6 +184,7 @@ pfamily=`cat /proc/cpuinfo | grep 'cpu family' | cut -d ':' -f 2 | cut -d ' ' -f
 pmodel=`cat /proc/cpuinfo | grep "model$TAB" | cut -d ':' -f 2 | cut -d ' ' -f 2`
 pstepping=`cat /proc/cpuinfo | grep 'stepping' | cut -d ':' -f 2 | cut -d ' ' -f 2`
 
+_css=no
 _mmx=no
 _mmx2=no
 _3dnow=no
@@ -460,6 +466,9 @@ rm -f $TMPC $TMPO
 for ac_option
 do
  case "$ac_option" in
+  --enable-css)
+	_css=yes
+	;;
   --enable-sse)
         _sse=yes
         ;;
@@ -526,6 +535,9 @@ do
   --enable-select)
         _select='#define HAVE_AUDIO_SELECT'
 	;;
+  --disable-css)
+	_css=no
+	;;
   --disable-sse)
         _sse=no
         ;;
@@ -582,6 +594,14 @@ do
         _win32libdir=`echo $ac_option | cut -d '=' -f 2`
 	_win32libdirnotify=no
         ;;
+  --with-csslibdir=*)
+        _csslibdir=`echo $ac_option | cut -d '=' -f 2`
+	_css='yes';
+	;;
+  --with-cssincdir=*)
+        _cssincdir=`echo $ac_option | cut -d '=' -f 2`
+        _css='yes';
+        ;;
   --size-x=*)
 	_x=`echo $ac_option | cut -d '=' -f 2`
 	;;
@@ -624,12 +644,31 @@ echo "Checking for DGA 2.0 .. $_dga2"
 echo "Checking for Xf86VM ... $_vm"
 echo "Checking for SVGAlib ... $_svga"
 echo "Checking for FBDev ... $_fbdev"
+echo "Checking for DeCSS support ... $_css"
 # write conf files.
 
 if [ $_gl = yes ]; then
    _gllib='-lGL'
 fi
 
+if [ $_css = yes ]; then
+   if [ ! -z $_csslibdir ]; then
+     _csslib="-L${_csslibdir} -lcss"
+   else
+     _csslib='-lcss'
+   fi
+   _css='#define HAVE_LIBCSS'
+   if [ ! -z $_cssincdir ]; then
+     _cssinc="-I${_cssincdir}"
+   else
+     _cssinc=""
+   fi
+else
+   _css='#undef HAVE_LIBCSS'
+   _csslib=''
+   _cssinc=''
+fi
+
 if [ $_x11 = yes ]; then
   if [ $_xdpms = yes ]; then
     _x11lib='-lX11 -lXext -lXdpms'
@@ -697,6 +736,8 @@ X_LIBS=$_x11libdir $_gllib $_sdllib $_dgalib $_x11lib $_xvlib $_vmlib $_svgalib
 TERMCAP_LIB=$_libtermcap
 XMM_LIBS = $_xmmplibs
 LIRC_LIBS = $_lirclibs
+CSS_LIB = $_csslib
+CSS_INC = $_cssinc
 WIN32_PATH=-DWIN32_PATH=\"$_win32libdir\"
 
 EOF
@@ -869,6 +910,9 @@ $_xmmpaudio
 /* LIRC (remote control, see www.lirc.org) support: */
 $_lircdefs
 
+/* DeCSS support using libcss */
+$_css
+
 /* Define this to enable MPEG 1/2 image postprocessing (requires FAST cpu!) */
 #define MPEG12_POSTPROC
 

demux_mpg.c

@@ -17,6 +17,9 @@ static char dvdaudio_table[256];
 static int demux_mpg_read_packet(demuxer_t *demux,int id){
   int d;
   int len;
+#ifdef HAVE_LIBCSS
+  int css=0;
+#endif
   unsigned char c=0;
   unsigned int pts=0;
   unsigned int dts=0;
@@ -31,7 +34,7 @@ static int demux_mpg_read_packet(demuxer_t *demux,int id){
 
   len=stream_read_word(demux->stream);
   if(verbose>=3)  printf("PACKET len=%d",len);
-  if(len==0 || len>4096) return -2;  // invalid packet !!!!!!
+  if(len==0 || len>STREAM_BUFFER_SIZE) return -2;  // invalid packet !!!!!!
 
   while(len>0){   // Skip stuFFing bytes
     c=stream_read_char(demux->stream);--len;
@@ -60,7 +63,13 @@ static int demux_mpg_read_packet(demuxer_t *demux,int id){
     int pts_flags;
     int hdrlen;
     // System-2 (.VOB) stream:
-    if((c>>4)&3) printf("Warning! Encrypted VOB file! (DeCSS not (yet) supported)\n");
+    if((c>>4)&3) {
+#ifdef HAVE_LIBCSS
+        css=1;
+#else
+        printf("Encrypted VOB file (not compiled with libcss support)! Read file DOCS/DVD\n");
+#endif
+    }
     c=stream_read_char(demux->stream); pts_flags=c>>6;
     c=stream_read_char(demux->stream); hdrlen=c;
     len-=2;
@@ -121,7 +130,7 @@ static int demux_mpg_read_packet(demuxer_t *demux,int id){
   }
   if(verbose>=3) printf(" => len=%d\n",len);
 
-  if(len<=0 || len>4096) return -1;  // Invalid packet size
+  if(len<=0 || len>STREAM_BUFFER_SIZE) return -1;  // Invalid packet size
   
   if(id>=0x1C0 && id<=0x1DF){
     // mpeg audio
@@ -148,6 +157,9 @@ static int demux_mpg_read_packet(demuxer_t *demux,int id){
   if(ds){
     if(verbose>=2) printf("DEMUX_MPG: Read %d data bytes from packet %04X\n",len,id);
 //    printf("packet start = 0x%X  \n",stream_tell(demux->stream)-packet_start_pos);
+#ifdef HAVE_LIBCSS
+    if (css) CSSDescramble(demux->stream->buffer,key_title);
+#endif
     ds_read_packet(ds,demux->stream,len,pts/90000.0f,0);
     return 1;
   }
@@ -164,7 +176,7 @@ int demux_mpg_es_fill_buffer(demuxer_t *demux){
   // Elementary video stream
   if(demux->stream->eof) return 0;
   demux->filepos=stream_tell(demux->stream);
-  ds_read_packet(demux->video,demux->stream,4096,0,0);
+  ds_read_packet(demux->video,demux->stream,STREAM_BUFFER_SIZE,0,0);
   return 1;
 }
 

dvdauth.c

@@ -0,0 +1,106 @@
+/* (C)2001 by LGB (Gabor Lenart), based on example programs in libcss
+   Some TODO: root privilegies really needed??  */
+
+/* don't do anything with this source if css support was not requested */
+#include "config.h"
+#ifdef HAVE_LIBCSS
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <linux/cdrom.h>
+// FIXME #include <string.h> conflicts with #include <linux/fs.h> (below)
+//#include <string.h>  // FIXME this conflicts with #include <linux/fs.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+
+#include <css.h>
+
+#include "dvdauth.h"
+
+char *dvd_device=NULL;
+unsigned char key_disc[2048];
+unsigned char key_title[5];
+
+
+#include <linux/fs.h>
+
+#ifndef FIBMAP
+#define FIBMAP 1
+#endif
+
+
+static int path_to_lba ( int fd )
+{
+        int lba = 0;
+        if (ioctl(fd, FIBMAP, &lba) < 0) {
+	        perror ("ioctl FIBMAP");
+		fprintf(stderr,"Hint: run mplayer as root!\n");
+//	        close(fd);
+	        return -1;
+	}
+	return lba;
+}
+
+
+
+static void reset_agids ( int fd )
+{
+        dvd_authinfo ai;
+        int i;
+        for (i = 0; i < 4; i++) {
+	        memset(&ai, 0, sizeof(ai));
+	        ai.type = DVD_INVALIDATE_AGID;
+	        ai.lsa.agid = i;
+	        ioctl(fd, DVD_AUTH, &ai);
+	}
+}
+
+
+
+int dvd_auth ( char *dev , int fd )
+{
+        int devfd;  /* FD of DVD device */
+        int lba;
+
+//	printf("DVD: auth fd=%d on %s.\n",fd,dev);
+
+	if ((devfd=open(dev,O_RDONLY))<0) {
+		fprintf(stderr,"DVD: cannot open DVD device \"%s\".\n",dev);
+		return 1;
+	}
+
+	/* reset AGIDs */
+	reset_agids(devfd);
+
+	/* authenticate disc */
+	if (CSSAuthDisc(devfd,key_disc)) {
+		fprintf(stderr,"DVD: CSSAuthDisc() failed.\n");
+		return 1;
+	}
+
+	/* authenticate title */
+        lba=path_to_lba(fd);
+	if (lba==-1) {
+		fprintf(stderr,"DVD: path_to_lba() failed.\n");
+		return 1;
+	}
+        if (CSSAuthTitle(devfd,key_title,lba)) {
+		fprintf(stderr,"DVD: CSSAuthTitle() failed.\n");
+		return 1;
+	}
+
+	/* decrypting title */
+        if (CSSDecryptTitleKey (key_title, key_disc) < 0) {
+                fprintf(stderr,"DVD: CSSDecryptTitleKey() failed.\n");
+		return 1;
+	}
+
+	close(devfd);
+	return 0;
+}
+
+
+#endif

dvdauth.h

@@ -0,0 +1,14 @@
+#include "config.h"
+#ifdef HAVE_LIBCSS
+#ifndef _MPLAYER_CSS_H
+#define _MPLAYER_CSS_H
+
+extern char *dvd_device;
+extern unsigned char key_disc[];
+extern unsigned char key_title[];
+
+int dvd_auth ( char *, int );
+
+
+#endif
+#endif

mplayer.c

@@ -50,6 +50,8 @@
 
 #include "codec-cfg.h"
 
+#include "dvdauth.h"
+
 #ifdef USE_DIRECTSHOW
 #include "DirectShow/DS_VideoDec.h"
 #include "DirectShow/DS_AudioDec.h"
@@ -605,6 +607,12 @@ if(vcd_track){
 //============ Open plain FILE ============
   f=open(filename,O_RDONLY);
   if(f<0){ printf("File not found: '%s'\n",filename);return 1; }
+#ifdef HAVE_LIBCSS
+  if (dvd_device) {
+    if (dvd_auth(dvd_device,f)) exit(0);
+    printf("DVD auth sequence seems to be OK.\n");
+  }
+#endif
   stream_type=STREAMTYPE_FILE;
 }
 
@@ -1900,6 +1908,9 @@ switch(file_format){
 //       picture->bitrate=2324*75*8; // standard VCD bitrate (75 sectors / sec)
 
         if(newpos<seek_to_byte) newpos=seek_to_byte;
+#ifdef HAVE_LIBCSS
+        if (dvd_device) newpos&=~(STREAM_BUFFER_SIZE-1);  /* sector boundary */
+#endif
         stream_seek(demuxer->stream,newpos);
         // re-sync video:
         videobuf_code_len=0; // reset ES stream buffer

stream.c

@@ -3,7 +3,7 @@
 
 //=================== STREAMER =========================
 
-#define STREAM_BUFFER_SIZE 4096
+#define STREAM_BUFFER_SIZE 2048
 
 #define STREAMTYPE_FILE 0
 #define STREAMTYPE_VCD  1
@@ -126,7 +126,7 @@ if(verbose>=3){
 
   switch(s->type){
   case STREAMTYPE_FILE:
-    newpos=pos&(~4095);break;
+    newpos=pos&(~(STREAM_BUFFER_SIZE-1));break;
   case STREAMTYPE_VCD:
     newpos=(pos/VCD_SECTOR_DATA)*VCD_SECTOR_DATA;break;
   }