Hi Hans,
desperately needed: the conversion guide :-)
It tried to find myself some answers, but there are still many open questions.
The document rfc-mpeg.txt doesn`t seem to be up to date
(VIDEO_CMD_PAUSE_TO_BLACK is obviosly a flag for VIDEO_CMD_FREEZE and not for
VIDEO_CMD_CONTINUE). The document furthermore raises the question, but gives no
answer how to scale and position the video.
I made some testing with the pvr350-plugin and managed to get OSD and sound,
but have only a black picture. I replaced the struct ivtvfb_ioctl_set_window
/IVTVFB_IOCTL_SET_WINDOW command for setting width, height, left and top with
struct v4l2_rect / VIDIOC_S_FBUF. Is this o.k.?
Although I have only sound (but can see the timecode on OSD), I recognized that
VIDEO_CMD_FREEZE does not stop immidiately the playback. It seems to play until
the end of the gop. The code should be right:
struct video_command cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = VIDEO_CMD_FREEZE;
printf("pvr350: Freeze\n");
if (IOCTL(fd_out, VIDEO_COMMAND, &cmd) < 0) {
esyslog("pvr350: Freeze error=%d", errno);
}
It really should freeze immidiately at the last frame. Any idea why it takes a
few seconds? This shouldn`t even be possible as the API command
CX2341X_DEC_PAUSE_PLAYBACK is designed to stop immidiately.
Same applies to
void cPvr350Device::Stop_Decode_Lastframe(void)
{
struct video_command cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.cmd = VIDEO_CMD_STOP;
cmd.flags = VIDEO_CMD_STOP_IMMEDIATELY;
printf("pvr350: Stop decode lastframe\n");
if (ioctl(fd_out, VIDEO_COMMAND, &cmd) < 0) {
esyslog("pvr350: Stop_Decode_Lastframe error=%d", errno);
}
}
It doesn`t stop immidiately - takes also a few seconds.
And resuming playback with VIDEO_CMD_CONTINUE seems to skip a few seconds.
BTW: I looked into ivtvfbctl to see how some settings have to be done with the
new ioctls. But it is not up to date, still uses old ioctls
(IVTVFB_IOCTL_GET_ALPHA, IVTVFB_IOCTL_SET_ALPHA, IVTVFB_IOCTL_SET_WINDOW).
I also looked in ivtvtv.cpp and tested it. But there is something wrong with
the display setting. I have only small vertical lines on the left and right of
the display. Is there any README how to use the program? Pressing the keys (s,
p, r ...) while playing an mpeg doesn` t seem to do anything.
Greets,
Martin
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