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-rw-r--r--test/test_stillimage.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/test/test_stillimage.c b/test/test_stillimage.c
new file mode 100644
index 0000000..264b2c4
--- /dev/null
+++ b/test/test_stillimage.c
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+/* display single iframes as stillimages
+ * iframes can be created with the 'convert' tool from imagemagick
+ * and mpeg2encode from ftp.mpeg.org, and must have a supported
+ * size, e.g. 702x576:
+ * $ convert -sample 702x576\! test.jpg test.mpg
+ *
+ * or more advanced using netpbm and mpeg2enc (not mpeg2encode) :
+ * $ cat image.jpg | jpegtopnm | pnmscale -xsize=704 -ysize=576 |\
+ * ppmntsc --pal | ppmtoy4m -F 25:1 -A 4:3 |\
+ * mpeg2enc -f 7 -T 90 -F 3 -np -a 2 -o "image.mpg"
+ *
+ */
+
+#include <sys/ioctl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <linux/dvb/video.h>
+
+
+static const char *usage_string = "\n\t"
+ "usage: %s <still.mpg> [still.mpg ...]\n"
+ "\n\t"
+ "to use another videodev than the first, set the environment variable VIDEODEV\n\t"
+ "e.g.[user@linux]$ export VIDEODEV=\"/dev/dvb/adapter1/video1\".\n\t"
+ "to display the image <n> seconds, instead of 10, set the variable SSTIME\n\t"
+ "e.g. [user@linux]$ export SSTIME=\"60\" to display the still for 1 minute.\n\t"
+ "this options can be set in the same line as the %s command:\n\t"
+ "e.g. $ SSTIME=25 VIDEODEV=/dev/dvb/adapter1/video1 %s ...\n";
+
+
+int main (int argc, char **argv)
+{
+ int fd;
+ int filefd;
+ struct stat st;
+ struct video_still_picture sp;
+ char *videodev = "/dev/dvb/adapter0/video0";
+ char *env_sstime;
+ int i = 1;
+ int tsec = 10;
+
+ if (argc < 2) {
+ fprintf (stderr, usage_string, argv[0],argv[0],argv[0]);
+ return -1;
+ }
+
+ if (getenv ("VIDEODEV"))
+ videodev = getenv("VIDEODEV");
+
+ if (getenv ("SSTIME")) {
+ env_sstime = getenv("SSTIME");
+ tsec = atoi(env_sstime);
+ }
+
+ if ((fd = open(videodev, O_RDWR)) < 0) {
+ perror(videodev);
+ return -1;
+ }
+
+next_pic:
+ printf("I-frame : '%s'\n", argv[i]);
+ if ((filefd = open(argv[i], O_RDONLY)) < 0) {
+ perror(argv[i]);
+ return -1;
+ }
+
+ fstat(filefd, &st);
+
+ sp.iFrame = (char *) malloc (st.st_size);
+ sp.size = st.st_size;
+ printf("I-frame size: %d\n", sp.size);
+
+ if (!sp.iFrame) {
+ fprintf (stderr, "No memory for I-Frame\n");
+ return -1;
+ }
+
+ printf ("read: %d bytes\n", read(filefd, sp.iFrame, sp.size));
+ close(filefd);
+
+ if ((ioctl(fd, VIDEO_STILLPICTURE, &sp) < 0)) {
+ perror("ioctl VIDEO_STILLPICTURE");
+ return -1;
+ }
+ free(sp.iFrame);
+
+ printf("Display image %d seconds ...\n",tsec);
+ sleep(tsec);
+ printf("Done.\n");
+ if (argc > ++i)
+ goto next_pic;
+
+ return 0;
+}
+
+