added pdp_v4l2

svn path=/trunk/externals/pidip/; revision=9949

6 files changed, 3275 insertions, 0 deletions

diff --git a/doc/pdp_v4l2-help.pd b/doc/pdp_v4l2-help.pd
new file mode 100755
index 0000000..af298b6
--- /dev/null
+++ b/doc/pdp_v4l2-help.pd
@@ -0,0 +1,65 @@
+#N canvas 508 213 927 686 10;
+#X obj 35 20 metro 40;
+#X msg 87 -19 stop;
+#X msg 35 -19 bang;
+#X msg 207 -159 open /dev/video0;
+#X msg 207 -135 open /dev/video1;
+#X text 339 -162 you can choose the input device using the 'open' message.
+the default is /dev/video0;
+#X msg 207 -110 close;
+#X text 347 -110 closes the video port;
+#X msg 208 -84 dim 320 240;
+#X msg 208 -61 dim 640 480;
+#X floatatom 209 -28 5 0 0 0 - - -;
+#X floatatom 212 137 5 0 0 0 - - -;
+#X msg 212 161 freq \$1;
+#X floatatom 273 137 5 0 0 0 - - -;
+#X msg 273 161 freqMHz \$1;
+#X text 317 135 sets the v4l tuner frequency (in v4l units and MHz)
+;
+#X text 325 253 pdp_v4l2 is an interface for video 4 linux 2 devices
+;
+#X text 324 268 it's very similar to pdp_v4l but should support more
+recent cameras \, if it doesn't with yours report bugs to ydegoyon@free.fr
+;
+#X obj 96 247 pdp_v4l2;
+#X text 321 202 creation arguments: <input device>;
+#X floatatom 210 20 5 0 0 0 - - -;
+#X msg 210 40 format \$1;
+#X text 294 18 sets the pixel format (like YUYV \, RGB32 \, ...);
+#X msg 209 -8 input \$1;
+#X text 293 -30 sets the v4l input (like camera \, tuner \, svideo
+\, ...);
+#X text 292 -19 see initialization phase for valid inputs;
+#X text 297 69 sets the video standard ( for tuner cards );
+#X text 294 29 see initialization phase for valid formats;
+#X text 297 81 see initialization phase for valid standards;
+#X floatatom 213 71 5 0 0 0 - - -;
+#X msg 213 91 standard \$1;
+#X obj 96 300 pdp_xv;
+#X msg 179 299 cursor 1;
+#X msg 167 271 posdim 0 0 1440 800;
+#X text 324 303 authors : Yves Degoyon and Lluis Gomez i Bigorda;
+#X text 325 317 code was inspired by pdp_v4l by Tom Schouten and xawtv
+by Gerd Knorr;
+#X connect 0 0 18 0;
+#X connect 1 0 0 0;
+#X connect 2 0 0 0;
+#X connect 3 0 18 0;
+#X connect 4 0 18 0;
+#X connect 6 0 18 0;
+#X connect 8 0 18 0;
+#X connect 9 0 18 0;
+#X connect 10 0 23 0;
+#X connect 11 0 12 0;
+#X connect 12 0 18 0;
+#X connect 13 0 14 0;
+#X connect 14 0 18 0;
+#X connect 18 0 31 0;
+#X connect 20 0 21 0;
+#X connect 21 0 18 0;
+#X connect 23 0 18 0;
+#X connect 29 0 30 0;
+#X connect 30 0 18 0;
+#X connect 32 0 31 0;
+#X connect 33 0 31 0;
diff --git a/modules/pdp_v4l2.c b/modules/pdp_v4l2.c
new file mode 100755
index 0000000..0b5f655
--- /dev/null
+++ b/modules/pdp_v4l2.c
@@ -0,0 +1,852 @@
+/*
+ *   PiDiP module
+ *   Authors : Yves Degoyon ( ydegoyon@free.fr ) and Lluis Gomez i Bigorda
+ *
+ *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*  This object is a video 4 linux 2 driver wrapper,
+ *  inspired by pdp_v4l by Tom Schouten
+ *  and some driver code from xawtv ( thanks to Gerd Knorr <kraxel@bytesex.org> )
+ */
+
+
+#include "pdp_config.h"
+#include "pdp.h"
+#include "pdp_llconv.h"
+#include "pdp_imageproc.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <linux/types.h>
+#include <linux/videodev.h>
+#include <linux/videodev2.h>
+#include <sys/mman.h>
+#include <sched.h>
+#include <pthread.h>
+
+// dont open any more after a set number 
+// of failed attempts
+// this is to prevent locks on auto-open
+// is reset when manually opened or closed
+#define PDP_XV_RETRIES 10
+
+
+#define DEVICENO 0
+#define NBUF 2
+#define COMPOSITEIN 1
+#define WANTED_BUFFERS 2
+#define MAX_INPUT   16
+#define MAX_NORM    16
+#define MAX_FORMAT  32
+#define MAX_CTRL    32
+
+
+typedef struct pdp_v4l2_struct
+{
+  t_object x_obj;
+  t_float x_f;
+  
+  t_outlet *x_outlet0;
+
+  bool x_initialized;
+  bool x_auto_open;
+
+  unsigned int x_width;
+  unsigned int x_height;
+
+  int x_curinput;
+  int x_curstandard;
+  int x_curformat;
+  int x_freq;
+
+  // video 4 linux 2 structures
+  int x_ninputs;
+  int x_nstandards;
+  int x_nformats;
+  struct v4l2_capability x_vcap;
+  struct v4l2_input x_inputs[MAX_INPUT];
+  struct v4l2_standard x_standards[MAX_NORM];
+  struct v4l2_fmtdesc x_formats[MAX_FORMAT];
+  struct v4l2_streamparm x_streamparam;
+  struct v4l2_queryctrl x_controls[MAX_CTRL*2];
+  struct v4l2_buffer x_v4l2_buf[WANTED_BUFFERS];
+  struct v4l2_format x_v4l2_format;
+  struct v4l2_requestbuffers x_reqbufs;
+
+  unsigned char *x_pdp_buf[WANTED_BUFFERS];
+ 
+  int x_tvfd;
+  int x_frame;
+  int x_skipnext;
+  int x_mytopmargin, x_mybottommargin;
+  int x_myleftmargin, x_myrightmargin;
+
+  t_symbol *x_device;
+
+  pthread_t x_thread_id;
+  int x_continue_thread;
+  int x_frame_ready;
+  int x_only_new_frames;
+  int x_last_frame;
+
+  int x_open_retry;
+
+  u32 x_minwidth;
+  u32 x_maxwidth;
+  u32 x_minheight;
+  u32 x_maxheight;
+
+  int x_debug;
+} t_pdp_v4l2;
+
+static void pdp_v4l2_close(t_pdp_v4l2 *x)
+{
+  /* close the v4l device and dealloc buffer */
+
+  void *dummy;
+  int i;
+
+    /* terminate thread if there is one */
+    if(x->x_continue_thread){
+	x->x_continue_thread = 0;
+	pthread_join (x->x_thread_id, &dummy);
+    }
+
+    if (x->x_tvfd >= 0)
+    {
+        close(x->x_tvfd);
+        x->x_tvfd = -1;
+    }
+
+    if (x->x_initialized){
+        for( i=0; i<WANTED_BUFFERS; i++ )
+        {
+           munmap(x->x_pdp_buf[i], x->x_v4l2_buf[i].length);
+        }
+	x->x_initialized = false;
+    }
+
+}
+
+static void pdp_v4l2_close_manual(t_pdp_v4l2 *x)
+{
+    x->x_open_retry = PDP_XV_RETRIES;
+    pdp_v4l2_close(x);
+}
+
+static void pdp_v4l2_close_error(t_pdp_v4l2 *x)
+{
+    pdp_v4l2_close(x);
+    if(x->x_open_retry) x->x_open_retry--;
+}
+
+static int pdp_v4l2_capture_frame(t_pdp_v4l2* x)
+{
+    x->x_v4l2_buf[x->x_frame].index  = x->x_frame;
+    x->x_v4l2_buf[x->x_frame].type   = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+    x->x_v4l2_buf[x->x_frame].memory = V4L2_MEMORY_MMAP;
+ 
+    if (-1 == ioctl (x->x_tvfd, VIDIOC_DQBUF, &x->x_v4l2_buf[x->x_frame])) 
+    {
+       switch (errno) 
+       {
+          case EAGAIN:
+            return 0;
+
+          case EIO:
+           // could ignore EIO, see spec
+
+          default:
+            post( "pdp_v4l2 : error reading buffer : thread exiting");
+            exit(-1);
+       }
+    }
+
+    // reenqueing buffer
+    if (-1 == ioctl (x->x_tvfd, VIDIOC_QBUF, &x->x_v4l2_buf[x->x_frame]))
+    {
+       perror("pdp_v4l2 : error queing buffers : thread exiting");
+       exit(-1);
+    }
+
+    return 0;
+} 
+
+static void pdp_v4l2_wait_frame(t_pdp_v4l2* x)
+{
+    // wait an event on file descriptor
+    fd_set fds;
+    struct timeval tv;
+    int ret;
+
+    FD_ZERO (&fds);
+    FD_SET (x->x_tvfd, &fds);
+
+    // Timeout. 
+    tv.tv_sec = 2;
+    tv.tv_usec = 0;
+
+    ret = select (x->x_tvfd + 1, &fds, NULL, NULL, &tv);
+
+    if (-1 == ret) {
+       if (EINTR == errno) return;
+       post ( "pdp_v4l2 : select timeout : thread exiting");
+       exit (-1);
+    }
+    if (0 == ret) 
+    {
+       post ( "pdp_v4l2 : select timeout : thread exiting");
+       exit (-1);
+    }
+}
+
+static int pdp_v4l2_start_capturing(t_pdp_v4l2 *x)
+{
+  enum v4l2_buf_type type;
+
+    type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+    if (-1 == ioctl (x->x_tvfd, VIDIOC_STREAMON, &type))
+    {
+       perror("pdp_v4l2 : error starting streaming");
+       return -1;
+    }
+    post("pdp_v4l2 : capture started");
+    return 0;
+}
+
+static int pdp_v4l2_stop_capturing(t_pdp_v4l2 *x)
+{
+  enum v4l2_buf_type type;
+
+    type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+    if (-1 == ioctl (x->x_tvfd, VIDIOC_STREAMOFF, &type))
+    {
+       perror("pdp_v4l2 : error stopping streaming");
+       return -1;
+    }
+    return 0;
+}
+
+static void *pdp_v4l2_thread(void *voidx)
+{
+    t_pdp_v4l2 *x = ((t_pdp_v4l2 *)voidx);
+
+    x->x_frame ^= 0x1;
+    if ( -1 == pdp_v4l2_start_capturing( x ) )
+    {
+       post( "pdp_v4l2 : problem starting capture.. exiting " );
+       exit( -1 );
+    }
+
+    /* capture with a double buffering scheme */
+    while (x->x_continue_thread)
+    {
+        /* schedule capture command for next frame */
+        pdp_v4l2_wait_frame(x);
+
+        /* wait until previous capture is ready */
+        x->x_frame ^= 0x1;
+        pdp_v4l2_capture_frame(x);
+
+        /* setup pointers for main thread */
+        x->x_frame_ready = 1;
+        x->x_last_frame = x->x_frame;
+    }
+
+    if ( -1 == pdp_v4l2_stop_capturing( x ) )
+    {
+       post( "pdp_v4l2 : problem stopping capture.. " );
+    }
+
+    post( "pdp_v4l2 : capture thread quitting" );
+    return 0;
+}
+
+static void pdp_v4l2_setlegaldim(t_pdp_v4l2 *x, int xx, int yy);
+
+static int pdp_v4l2_set_format(t_pdp_v4l2 *x, t_int index)
+{
+    x->x_v4l2_format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+    x->x_v4l2_format.fmt.pix.pixelformat = x->x_formats[index].pixelformat;
+    x->x_v4l2_format.fmt.pix.width = x->x_width;
+    x->x_v4l2_format.fmt.pix.height = x->x_height;
+    x->x_v4l2_format.fmt.pix.field = V4L2_FIELD_ANY;
+    x->x_v4l2_format.fmt.pix.bytesperline = 0;
+
+    post( "pdp_v4l2 : setting format : pixel format : %c%c%c%c", 
+            x->x_v4l2_format.fmt.pix.pixelformat & 0xff,
+            (x->x_v4l2_format.fmt.pix.pixelformat >>  8) & 0xff,
+            (x->x_v4l2_format.fmt.pix.pixelformat >> 16) & 0xff,
+            (x->x_v4l2_format.fmt.pix.pixelformat >> 24) & 0xff );
+
+    if (-1 == ioctl(x->x_tvfd, VIDIOC_S_FMT, &x->x_v4l2_format, EINVAL))
+    { 
+       perror( "pdp_v4l2 : setting format" );
+       return -1;
+    }
+
+    if ( x->x_v4l2_format.fmt.pix.pixelformat != x->x_formats[index].pixelformat )
+    {
+       post( "pdp_v4l2 : couldn't set format : wrong pixel format " );
+       return -1;
+    }
+    post( "pdp_v4l2 : capture format : width : %d : height :%d : bytesperline : %d : image size : %d",
+          x->x_v4l2_format.fmt.pix.width , x->x_v4l2_format.fmt.pix.height,
+          x->x_v4l2_format.fmt.pix.bytesperline, x->x_v4l2_format.fmt.pix.sizeimage );
+    return 0;
+}
+
+static int pdp_v4l2_init_mmap(t_pdp_v4l2 *x)
+{
+  unsigned int i;
+
+    // get mmap numbers 
+    x->x_reqbufs.count  = WANTED_BUFFERS;
+    x->x_reqbufs.type   = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+    x->x_reqbufs.memory = V4L2_MEMORY_MMAP;
+    if (-1 == ioctl(x->x_tvfd, VIDIOC_REQBUFS, &x->x_reqbufs, 0))
+    {
+        post( "pdp_v4l2 : error : couldn't init driver buffers" ); 
+        return -1;
+    }
+    post("pdp_v4l2: got %d buffers type %d memory %d", 
+        x->x_reqbufs.count, x->x_reqbufs.type, x->x_reqbufs.memory );
+
+    for (i = 0; i < x->x_reqbufs.count; i++) 
+    {
+        x->x_v4l2_buf[i].index  = i;
+        x->x_v4l2_buf[i].type   = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        x->x_v4l2_buf[i].memory = V4L2_MEMORY_MMAP;
+        if (-1 == ioctl(x->x_tvfd, VIDIOC_QUERYBUF, &x->x_v4l2_buf[i], 0))
+        {
+            post( "pdp_v4l2 : error : couldn't query buffer %d", i ); 
+            return -1;
+        }
+        x->x_pdp_buf[i] = (unsigned char *) mmap(NULL, x->x_v4l2_buf[i].length,
+                          PROT_READ | PROT_WRITE, MAP_SHARED,
+                          x->x_tvfd, x->x_v4l2_buf[i].m.offset);
+        if (MAP_FAILED == x->x_pdp_buf[i]) 
+        {
+            perror("pdp_v4l2 : mmap");
+            return -1;
+        }
+    }
+    post( "pdp_v4l2 : mapped %d buffers", x->x_reqbufs.count ); 
+
+    for (i = 0; i < WANTED_BUFFERS; i++) 
+    {
+        x->x_v4l2_buf[i].type        = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        x->x_v4l2_buf[i].memory      = V4L2_MEMORY_MMAP;
+        x->x_v4l2_buf[i].index       = i;
+
+        if (-1 == ioctl (x->x_tvfd, VIDIOC_QBUF, &x->x_v4l2_buf[i]))
+        {
+            perror("pdp_v4l2 : error queing buffers");
+            return -1;
+        }
+    }
+    post( "pdp_v4l2 : queued %d buffers", x->x_reqbufs.count ); 
+
+    return 0;
+}
+
+static void pdp_v4l2_open(t_pdp_v4l2 *x, t_symbol *name)
+{
+    // open a v4l device and allocate a buffer
+
+    unsigned int size;
+    int i;
+
+    unsigned int width, height;
+
+    /* if already opened -> close */
+    if (x->x_initialized) pdp_v4l2_close(x);
+
+    /* exit if retried too much */
+    if (!x->x_open_retry){
+	post("pdp_v4l2: retry count reached zero for %s", name->s_name);
+	post("pdp_v4l2: try to open manually");
+	return;
+    }
+
+    post("pdp_v4l2: opening %s", name->s_name);
+
+    x->x_device = name;
+
+    if ((x->x_tvfd = open(name->s_name, O_RDWR)) < 0)
+    {
+        post("pdp_v4l2: error: open %s: %s",name->s_name,strerror(errno));
+        perror(name->s_name);
+        pdp_v4l2_close_error(x);
+        x->x_initialized = false;
+        return;
+    }
+
+    if (ioctl(x->x_tvfd, VIDIOC_QUERYCAP, &x->x_vcap) < 0)
+    {
+        perror("get capabilities");
+        return;
+    }
+
+    post("pdp_v4l2: driver info: %s %d.%d.%d / %s @ %s",
+          x->x_vcap.driver, (x->x_vcap.version >> 16) & 0xff, (x->x_vcap.version >>  8) & 0xff, x->x_vcap.version & 0xff, x->x_vcap.card, x->x_vcap.bus_info);
+
+    for (x->x_ninputs = 0; x->x_ninputs < MAX_INPUT; x->x_ninputs++) {
+        x->x_inputs[x->x_ninputs].index = x->x_ninputs;
+        if (-1 == ioctl(x->x_tvfd, VIDIOC_ENUMINPUT, &x->x_inputs[x->x_ninputs], EINVAL))
+        {
+            // perror("get inputs");
+            break;
+        }
+        else
+        {
+            post ("pdp_v4l2 : input %d : %s",  x->x_ninputs, x->x_inputs[x->x_ninputs].name );
+        }
+    }
+    if (x->x_debug) post("pdp_v4l2: device has %d inputs", x->x_ninputs );
+
+    if ( x->x_ninputs > 0 )
+    {
+      if (x->x_curinput < 0) x->x_curinput = 0;
+      if (x->x_curinput >= x->x_ninputs) x->x_curinput = x->x_ninputs-1;
+
+      if (ioctl(x->x_tvfd, VIDIOC_S_INPUT, &x->x_curinput) < 0)
+      {
+          perror("pdp_v4l2: error: VIDIOC_S_INPUT");
+          post("pdp_v4l2: cant switch to input %d",x->x_curinput);
+      }
+      else
+      {
+         post("pdp_v4l2: switched to input %d", x->x_curinput);
+      }
+
+      if (ioctl(x->x_tvfd, VIDIOC_G_INPUT, &x->x_curinput) < 0)
+      {
+          post("pdp_v4l2: cant get current input %d",x->x_curinput);
+      }
+      else
+      {
+          post("pdp_v4l2: current input is %d",x->x_curinput);
+      }
+    }
+
+    for (x->x_nstandards = 0; x->x_nstandards < MAX_NORM; x->x_nstandards++) {
+        x->x_standards[x->x_nstandards].index = x->x_nstandards;
+        if (-1 == ioctl(x->x_tvfd, VIDIOC_ENUMSTD, &x->x_standards[x->x_nstandards], EINVAL))
+        {
+            // perror("get standards");
+            break;
+        }
+        else
+        {
+            post ("pdp_v4l2 : standard %d : %s",  x->x_nstandards, x->x_standards[x->x_nstandards].name );
+        }
+    }
+    if (x->x_debug) post("pdp_v4l2: device supports %d standards", x->x_nstandards );
+
+    // switch to desired norm ( if available )
+    if ( x->x_nstandards > 0 )
+    {
+      if (x->x_curstandard < 0) x->x_curstandard = 0;
+      if (x->x_curstandard >= x->x_nstandards) x->x_curstandard = x->x_nstandards-1;
+
+      if (ioctl(x->x_tvfd, VIDIOC_S_STD, &x->x_curstandard) < 0)
+      {
+          perror("pdp_v4l2: error: VIDIOC_S_STD");
+          post("pdp_v4l2: cant switch to standard %d",x->x_curstandard);
+      }
+      else
+      {
+         post("pdp_v4l2: switched to standard %d", x->x_curstandard);
+      }
+
+      if (ioctl(x->x_tvfd, VIDIOC_G_STD, &x->x_curstandard) < 0)
+      {
+          post("pdp_v4l2: cant get current standard %d",x->x_curstandard);
+      }
+      else
+      {
+          post("pdp_v4l2: current standard is %d",x->x_curstandard);
+      }
+    }
+
+    if (x->x_freq > 0){
+        if (ioctl(x->x_tvfd, VIDIOC_S_FREQUENCY, &x->x_freq) < 0)
+            perror ("couldn't set frequency :");
+    }
+
+    for (x->x_nformats = 0; x->x_nformats < MAX_FORMAT; x->x_nformats++) {
+        x->x_formats[x->x_nformats].index = x->x_nformats;
+        x->x_formats[x->x_nformats].type  = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+        if (-1 == ioctl(x->x_tvfd, VIDIOC_ENUM_FMT, &x->x_formats[x->x_nformats], EINVAL))
+        {
+            // perror("get formats");
+            break;
+        }
+        else
+        {
+            post ("pdp_v4l2 : format %d : %s",  x->x_nformats, x->x_formats[x->x_nformats].description );
+        }
+    }
+    if (x->x_debug) post("pdp_v4l2: device supports %d formats", x->x_nformats );
+
+    x->x_streamparam.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+    ioctl(x->x_tvfd,VIDIOC_G_PARM,&x->x_streamparam);
+
+        /* controls */
+    for (i = 0; i < MAX_CTRL; i++) {
+        x->x_controls[i].id = V4L2_CID_BASE+i;
+        if (-1 == ioctl(x->x_tvfd, VIDIOC_QUERYCTRL, &x->x_controls[i], EINVAL) ||
+            (x->x_controls[i].flags & V4L2_CTRL_FLAG_DISABLED))
+            x->x_controls[i].id = -1;
+        else if (x->x_debug) post( "control %d active (i:%d)", x->x_controls[i].id, i );
+    }
+    for (i = 0; i < MAX_CTRL; i++) {
+        x->x_controls[i+MAX_CTRL].id = V4L2_CID_PRIVATE_BASE+i;
+        if (-1 == ioctl(x->x_tvfd, VIDIOC_QUERYCTRL, &x->x_controls[i+MAX_CTRL], EINVAL) ||
+            (x->x_controls[i+MAX_CTRL].flags & V4L2_CTRL_FLAG_DISABLED))
+            x->x_controls[i+MAX_CTRL].id = -1;
+        else if (x->x_debug) post( "control %d active (i:%d)", x->x_controls[i+MAX_CTRL].id, i );
+    }
+
+    if ( x->x_nformats > 0 )
+    {
+      if (x->x_curformat < 0) x->x_curformat = 0;
+      if (x->x_curformat >= x->x_nformats) x->x_curformat = x->x_nformats-1;
+
+      // set the first available format
+      if ( pdp_v4l2_set_format(x, x->x_curformat) < 0 )
+      {
+         post( "pdp_v4l2 : couldn't set format : closing..." );
+         pdp_v4l2_close_error(x);
+         x->x_initialized = false;
+         return;
+      }
+    }
+    else
+    {
+      post( "pdp_v4l2 : error : no available formats : closing..." );
+      pdp_v4l2_close_error(x);
+      x->x_initialized = false;
+      return;
+    }
+
+    if ( pdp_v4l2_init_mmap(x) < 0 )
+    {
+      post( "pdp_v4l2 : error : couldn't initialize memory mapping : closing..." );
+      pdp_v4l2_close_error(x);
+      x->x_initialized = false;
+      return;
+    }
+
+    x->x_initialized=true;
+    post( "pdp_v4l2 : device initialized" );
+
+    // create thread 
+    x->x_continue_thread = 1;
+    x->x_frame_ready = 0;
+    pthread_create(&x->x_thread_id, 0, pdp_v4l2_thread, x);
+    post( "pdp_v4l2 : created thread : %u", x->x_thread_id );
+
+}
+
+static void pdp_v4l2_open_manual(t_pdp_v4l2 *x, t_symbol *name)
+{
+    x->x_open_retry = PDP_XV_RETRIES;
+    pdp_v4l2_open(x, name);
+}
+
+
+static void pdp_v4l2_input(t_pdp_v4l2 *x, t_float f)
+{
+    if (!x->x_initialized){
+       post( "pdp_v4l2 : cannot set input : no device opened ");
+       return;
+    }
+    if ( ( (int)f < 0 ) || ( (int)f >= x->x_ninputs ) )
+    {
+       post( "pdp_v4l2 : input number %d out of range", (int)f );
+       return;
+    }
+    if (x->x_initialized){
+        pdp_v4l2_close(x);
+        x->x_curinput = (int)f;
+        pdp_v4l2_open(x, x->x_device);
+    }
+}
+
+static void pdp_v4l2_standard(t_pdp_v4l2 *x, t_float f)
+{
+    if (!x->x_initialized){
+       post( "pdp_v4l2 : cannot set standard : no device opened ");
+       return;
+    }
+    if ( ( (int)f < 0 ) || ( (int)f >= x->x_nstandards ) )
+    {
+       post( "pdp_v4l2 : standard number %d out of range", (int)f );
+       return;
+    }
+    if (x->x_initialized){
+        pdp_v4l2_close(x);
+        x->x_curstandard = (int)f;
+        pdp_v4l2_open(x, x->x_device);
+    }
+}
+
+static void pdp_v4l2_format(t_pdp_v4l2 *x, t_float f)
+{
+    if (!x->x_initialized){
+       post( "pdp_v4l2 : cannot set format : no device opened ");
+       return;
+    }
+    if ( ( (int)f < 0 ) || ( (int)f >= x->x_nformats ) )
+    {
+       post( "pdp_v4l2 : format number %d out of range", (int)f );
+       return;
+    }
+    if (x->x_initialized){
+        pdp_v4l2_close(x);
+        x->x_curformat = (int)f;
+        pdp_v4l2_open(x, x->x_device);
+    }
+}
+
+static void pdp_v4l2_freq(t_pdp_v4l2 *x, t_float f)
+{
+    if (!x->x_initialized){
+       post( "pdp_v4l2 : cannot set format : no device opened ");
+       return;
+    }
+    x->x_freq = (int)f;
+    if (x->x_freq > 0)
+    {
+       if (ioctl(x->x_tvfd, VIDIOC_S_FREQUENCY, &x->x_freq) < 0)
+       {
+         perror ("couldn't set frequency :");
+       }
+       else 
+       {
+         post("pdp_v4l2: tuner frequency set to : %f MHz", f / 16.0f);
+       }
+    }
+}
+
+static void pdp_v4l2_freqMHz(t_pdp_v4l2 *x, t_float f)
+{
+   pdp_v4l2_freq(x, f*16.0f); 
+}
+
+
+static void pdp_v4l2_bang(t_pdp_v4l2 *x)
+{
+   
+  /* if initialized, grab a frame and output it */
+
+  unsigned int w,h,nbpixels,packet_size,plane1,plane2;
+  unsigned char *newimage=NULL;
+  int pdp_packt,length,pos,i,encoding;
+  t_pdp* header;
+  t_image* image;
+  short int * data;
+
+  static short int gain[4] = {0x7fff, 0x7fff, 0x7fff, 0x7fff};
+
+  if (!(x->x_initialized)){
+	post("pdp_v4l2: no device opened");
+
+	if (x->x_auto_open){
+	  post("pdp_v4l2: attempting auto open");
+	  pdp_v4l2_open(x, x->x_device);
+	  if (!(x->x_initialized)){
+	    post("pdp_v4l2: auto open failed");
+	    return;
+	  }
+	}
+	else return;
+    }
+
+    /* do nothing if there is no frame ready */
+    if((!x->x_frame_ready) && (x->x_only_new_frames)) return;
+    x->x_frame_ready = 0;
+
+    newimage = x->x_pdp_buf[x->x_last_frame];
+
+    /* create new packet */
+
+    pdp_packt = pdp_packet_new_image(PDP_IMAGE_YV12, x->x_width, x->x_height);
+    header = pdp_packet_header(pdp_packt);
+    image = pdp_packet_image_info(pdp_packt);
+
+    if (!header){
+	post("pdp_v4l2: ERROR: can't allocate packet");
+	return;
+    }
+
+    data = (short int *) pdp_packet_data(pdp_packt);
+
+    /* convert data to pdp packet */
+
+    switch(x->x_v4l2_format.fmt.pix.pixelformat){
+    case  V4L2_PIX_FMT_YUV420:
+	pdp_llconv(newimage, RIF_YUV__P411_U8, data, RIF_YVU__P411_S16, x->x_width, x->x_height); 
+	break;
+	
+	/* long live standards. v4l's rgb is in fact ogl's bgr */
+    case  V4L2_PIX_FMT_RGB24:
+	pdp_llconv(newimage, RIF_BGR__P____U8, data, RIF_YVU__P411_S16, x->x_width, x->x_height); 
+	break;
+
+    case  V4L2_PIX_FMT_RGB32:
+	pdp_llconv(newimage, RIF_BGRA_P____U8, data, RIF_YVU__P411_S16, x->x_width, x->x_height); 
+	break;
+
+    case  V4L2_PIX_FMT_YUYV:
+	pdp_llconv(newimage, RIF_YUYV_P____U8, data, RIF_YVU__P411_S16, x->x_width, x->x_height); 
+	break;
+
+    case  V4L2_PIX_FMT_UYVY: 
+        pdp_llconv(newimage, RIF_UYVY_P____U8, data, RIF_YVU__P411_S16, x->x_width, x->x_height);
+        break;
+
+    default:
+	post("pdp_v4l2: unsupported color model");
+	break;
+    }
+
+    pdp_packet_pass_if_valid(x->x_outlet0, &pdp_packt);
+
+}
+
+
+static void pdp_v4l2_setlegaldim(t_pdp_v4l2 *x, int xx, int yy)
+{
+
+    unsigned int w,h;
+
+    w  = pdp_imageproc_legalwidth((int)xx);
+    h  = pdp_imageproc_legalheight((int)yy);
+    
+    w = (w < x->x_maxwidth) ? w : x->x_maxwidth;
+    w = (w > x->x_minwidth) ? w : x->x_minwidth;
+
+    h = (h < x->x_maxheight) ? h : x->x_maxheight;
+    h = (h > x->x_minheight) ? h : x->x_minheight;
+
+    x->x_width = w;
+    x->x_height = h;
+}
+
+static void pdp_v4l2_dim(t_pdp_v4l2 *x, t_floatarg xx, t_floatarg yy)
+{
+    if (!x->x_initialized){
+       post( "pdp_v4l2 : cannot set dim : no device opened ");
+       return;
+    }
+    if (x->x_initialized){
+        pdp_v4l2_close(x);
+        pdp_v4l2_setlegaldim(x, (int)xx, (int)yy);
+        pdp_v4l2_open(x, x->x_device);
+    }
+}
+
+static void pdp_v4l2_free(t_pdp_v4l2 *x)
+{
+    pdp_v4l2_close(x);
+}
+
+t_class *pdp_v4l2_class;
+
+void *pdp_v4l2_new(t_symbol *vdef)
+{
+    t_pdp_v4l2 *x = (t_pdp_v4l2 *)pd_new(pdp_v4l2_class);
+
+    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+
+    x->x_initialized = false;
+
+    x->x_tvfd = -1;
+    x->x_ninputs = 0;
+    x->x_curinput = -1;
+    x->x_curstandard = -1;
+    x->x_curformat = -1;
+    x->x_freq = -1;
+    x->x_nstandards = 0;
+    x->x_nformats = 0;
+    x->x_frame = 0;
+    x->x_last_frame = 0;
+
+    x->x_auto_open = true;
+    if (vdef != gensym("")){
+	x->x_device = vdef;
+    }
+    else{
+	x->x_device = gensym("/dev/video0");
+    }
+
+    x->x_continue_thread = 0;
+    x->x_only_new_frames = 1;
+
+    x->x_width = 320;
+    x->x_height = 240;
+
+    x->x_open_retry = PDP_XV_RETRIES;
+
+    x->x_minwidth = pdp_imageproc_legalwidth(0);
+    x->x_maxwidth = pdp_imageproc_legalwidth_round_down(0x7fffffff);
+    x->x_minheight = pdp_imageproc_legalheight(0);
+    x->x_maxheight = pdp_imageproc_legalheight_round_down(0x7fffffff);
+
+    x->x_debug = 1;
+
+    return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_v4l2_setup(void)
+{
+    pdp_v4l2_class = class_new(gensym("pdp_v4l2"), (t_newmethod)pdp_v4l2_new,
+    	(t_method)pdp_v4l2_free, sizeof(t_pdp_v4l2), 0, A_DEFSYMBOL, A_DEFSYMBOL, A_NULL);
+
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_close_manual, gensym("close"), A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_open_manual, gensym("open"), A_SYMBOL, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_input, gensym("input"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_format, gensym("format"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_standard, gensym("standard"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_dim, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_freq, gensym("freq"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_freqMHz, gensym("freqMHz"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_v4l2_class, (t_method)pdp_v4l2_bang, gensym("bang"), A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/patches/giss-audio-mp3.pd b/patches/giss-audio-mp3.pd
new file mode 100755
index 0000000..f186452
--- /dev/null
+++ b/patches/giss-audio-mp3.pd
@@ -0,0 +1,531 @@
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diff --git a/patches/giss-dv-linux.pd b/patches/giss-dv-linux.pd
new file mode 100755
index 0000000..bc1d512
--- /dev/null
+++ b/patches/giss-dv-linux.pd
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