From 4362e599361bfd0b2c50ce5327654cf9020d745c Mon Sep 17 00:00:00 2001
From: Andreas Oberritter <obi@opendreambox.org>
Date: Thu, 3 Mar 2011 11:51:27 +0100
Subject: [PATCH] dreambox-dvb-tools-v3-1.7

---
 showiframe.c   | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++
 showiframe.pro |  6 ++++
 2 files changed, 84 insertions(+)
 create mode 100644 showiframe.c
 create mode 100644 showiframe.pro

diff --git a/showiframe.c b/showiframe.c
new file mode 100644
index 0000000..1a7e651
--- /dev/null
+++ b/showiframe.c
@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <linux/dvb/video.h>
+
+void c(int a)
+{
+	if (a < 0)
+	{
+		perror("ioctl");
+		exit(6);
+	}
+}
+
+int main(int argc, char **argv)
+{
+	struct stat s;
+	if (argc != 2)
+	{
+		printf("usage: %s <iframe>\n", *argv);
+		return 3;
+	}
+
+	int f = open(argv[1], O_RDONLY);
+	if (f < 0)
+	{
+		perror(argv[1]);
+		return 4;
+	}
+	fstat(f, &s);
+
+	int fd = open("/dev/dvb/adapter0/video0", O_WRONLY|O_NONBLOCK);
+
+	if (fd <= 0)
+	{
+		perror("/dev/dvb/adapter0/video0");
+		return 2;
+	}
+	else if (fork() != 0)
+		return 0;
+	else
+	{
+		size_t pos=0;
+		int seq_end_avail = 0;
+		unsigned char pes_header[] = { 0x00, 0x00, 0x01, 0xE0, 0x00, 0x00, 0x80, 0x00, 0x00 };
+		unsigned char seq_end[] = { 0x00, 0x00, 0x01, 0xB7 };
+		unsigned char iframe[s.st_size];
+		unsigned char stuffing[8192];
+		memset(stuffing, 0, 8192);
+		read(f, iframe, s.st_size);
+		ioctl(fd, VIDEO_SET_STREAMTYPE, 0); // set to mpeg2
+		c(ioctl(fd, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY));
+		c(ioctl(fd, VIDEO_PLAY));
+		c(ioctl(fd, VIDEO_CONTINUE));
+		c(ioctl(fd, VIDEO_CLEAR_BUFFER));
+		while(pos <= (s.st_size-4) && !(seq_end_avail = (!iframe[pos] && !iframe[pos+1] && iframe[pos+2] == 1 && iframe[pos+3] == 0xB7)))
+			++pos;
+		if ((iframe[3] >> 4) != 0xE) // no pes header
+			write(fd, pes_header, sizeof(pes_header));
+		else {
+			iframe[4] = iframe[5] = 0x00;
+		}
+		write(fd, iframe, s.st_size);
+		if (!seq_end_avail)
+			write(fd, seq_end, sizeof(seq_end));
+		write(fd, stuffing, 8192);
+		usleep(150000);
+		c(ioctl(fd, VIDEO_STOP, 0));
+		c(ioctl(fd, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_DEMUX));
+	}
+	return 0;
+}
+
diff --git a/showiframe.pro b/showiframe.pro
new file mode 100644
index 0000000..91fd1e6
--- /dev/null
+++ b/showiframe.pro
@@ -0,0 +1,6 @@
+CONFIG = console
+TEMPLATE = app
+INCLUDEPATH += .
+
+SOURCES += showiframe.c
+
-- 
2.20.1