From 136f01a88b219f2d13455c5b752e73025f90a7f1 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Sun, 18 Nov 2007 21:33:06 +0000
Subject: Updated the libraw1394 code to match a more recent version (post 0.9)
---
src/dv1394.cc | 202 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 202 insertions(+)
create mode 100644 src/dv1394.cc
(limited to 'src')
diff --git a/src/dv1394.cc b/src/dv1394.cc
new file mode 100644
index 0000000..26953d9
--- /dev/null
+++ b/src/dv1394.cc
@@ -0,0 +1,202 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * dv1394.cc
+ *
+ * Tue Apr 19 12:10:34 CEST 2005
+ * Copyright 2005 Bent Bisballe
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of MIaV.
+ *
+ * MIaV 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.
+ *
+ * MIaV 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 MIaV; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include <config.h>
+#include "dv1394.h"
+
+#ifdef USE_GUI
+
+#include "dv.h"
+
+
+#include <stdlib.h>
+#include <memory.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+/**
+ * Callback function for the firewire interface.
+ */
+static raw1394_iso_disposition raw_reader(raw1394handle_t handle,
+ unsigned char *data,
+ unsigned int length,
+ unsigned char channel,
+ unsigned char tag,
+ unsigned char sy,
+ unsigned int cycle,
+ unsigned int dropped)
+{
+ static char *framedata = NULL;
+
+ // Only process packets with reasonable length.
+ if ( length > 16 )
+ {
+ unsigned char * p = ( unsigned char* ) & data[ 8 ];
+ int section_type = p[ 0 ] >> 5; // section type is in bits 5 - 7
+ int dif_sequence = p[ 1 ] >> 4; // dif sequence number is in bits 4 - 7
+ int dif_block = p[ 2 ];
+
+ if ( section_type == 0 && dif_sequence == 0 )
+ {
+ if ( framedata != NULL )
+ {
+ raw1394_set_userdata(handle, (void *)framedata);
+ framedata = NULL;
+ }
+ }
+
+ if(!framedata)
+ {
+ framedata = (char *)malloc(DVPACKAGE_SIZE); // dvframe.h
+ if(!framedata)
+ {
+ // We're fucked
+ fprintf(stderr, "Framedata allocation error: %s.\n", strerror( errno ) ); fflush(stderr);
+ exit(1);
+ }
+ }
+
+ switch ( section_type )
+ {
+ case 0: // 1 Header block
+ // p[3] |= 0x80; // hack to force PAL data
+ memcpy( framedata + dif_sequence * 150 * 80, p, 480 );
+ break;
+
+ case 1: // 2 Subcode blocks
+ memcpy( framedata + dif_sequence * 150 * 80 + ( 1 + dif_block ) * 80, p, 480 );
+ break;
+
+ case 2: // 3 VAUX blocks
+ memcpy( framedata + dif_sequence * 150 * 80 + ( 3 + dif_block ) * 80, p, 480 );
+ break;
+
+ case 3: // 9 Audio blocks interleaved with video
+ memcpy( framedata + dif_sequence * 150 * 80 + ( 6 + dif_block * 16 ) * 80, p, 480 );
+ break;
+
+ case 4: // 135 Video blocks interleaved with audio
+ memcpy( framedata + dif_sequence * 150 * 80 + ( 7 + ( dif_block / 15 ) + dif_block ) * 80, p, 480 );
+ break;
+
+ default: // we can't handle any other data
+ break;
+ }
+ }
+
+ return RAW1394_ISO_OK;
+}
+
+dv1394::dv1394(Info *i, int p, int c)
+{
+ info = i;
+ port = p;
+ channel = c;
+}
+
+dv1394::~dv1394()
+{
+ // Close firewire connection.
+ if(handle) {
+ raw1394_iso_shutdown(handle);
+ raw1394_destroy_handle(handle);
+ }
+}
+
+bool dv1394::connect()
+{
+ int n_ports;
+ struct raw1394_portinfo pinf[ 16 ];
+
+ // Get handle to firewire channels
+ handle = raw1394_new_handle();
+ if(!handle) {
+ info->error("raw1394 - failed to get handle: %s.", strerror( errno ) );
+ return false;
+ }
+
+ // how many adapters are hooked in?
+ if((n_ports = raw1394_get_port_info(handle, pinf, 16)) < 0 ) {
+ info->error("raw1394 - failed to get port info: %s.", strerror( errno ) );
+ raw1394_destroy_handle(handle);
+ handle = NULL;
+ return false;
+ }
+
+ // Tell raw1394 which host adapter to use
+ if(raw1394_set_port(handle, port) < 0 ) {
+ info->error("raw1394 - failed to set port: %s.", strerror( errno ) );
+ raw1394_destroy_handle(handle);
+ handle = NULL;
+ return false;
+ }
+
+ int res = raw1394_iso_recv_init(handle,
+ raw_reader,
+ 488,
+ 512, // Wonder what this size should actually be!?
+ channel,
+ RAW1394_DMA_PACKET_PER_BUFFER,//RAW1394_DMA_DEFAULT,
+ -1);
+ if(res == -1) {
+ fprintf(stderr, "Error in raw1394_iso_recv_init: %s\n", strerror(errno));
+ // exit(1);
+ }
+
+ raw1394_set_userdata( handle, ( void* ) NULL);
+
+ res = raw1394_iso_recv_start(handle, -1, -1, 0);
+
+ if(res == -1) {
+ fprintf(stderr, "Error in raw1394_iso_recv_start: %s\n", strerror(errno));
+ // exit(1);
+ }
+
+ return true;
+}
+
+unsigned char *dv1394::readFrame()
+{
+ // Firewire port not correctly opened.
+ if(!handle) return NULL;
+
+ unsigned char *ptr;
+ while(1) {
+ raw1394_loop_iterate(handle);
+ ptr = (unsigned char *)raw1394_get_userdata(handle);
+ if(ptr) {
+ raw1394_set_userdata(handle, NULL);
+ break;
+ }
+ }
+
+ return ptr;
+}
+
+#endif/*USE_GUI*/
--
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