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[media] ivtv: add IVTV_IOC_PASSTHROUGH_MODE

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With this private ioctl it is possible to use the ivtv decoder without
requiring the dvb/video.h and dvb/audio.h headers.

Eventually support for those DVB APIs will be dropped from ivtv.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2011-12-15 10:40:23 -03:00 committed by Mauro Carvalho Chehab
parent 85eeece773
commit 6e82a6a2a0
2 changed files with 13 additions and 1 deletions
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8
drivers/media/video/ivtv/ivtv-ioctl.c
View file

@ -1625,6 +1625,12 @@ static int ivtv_decoder_ioctls(struct file *filp, unsigned int cmd, void *arg)
return ivtv_yuv_prep_frame(itv, args);
}
case IVTV_IOC_PASSTHROUGH_MODE:
IVTV_DEBUG_IOCTL("IVTV_IOC_PASSTHROUGH_MODE\n");
if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
return -EINVAL;
return ivtv_passthrough_mode(itv, *(int *)arg != 0);
case VIDEO_GET_PTS: {
s64 *pts = arg;
s64 frame;
@ -1786,6 +1792,7 @@ static long ivtv_default(struct file *file, void *fh, bool valid_prio,
if (!valid_prio) {
switch (cmd) {
case IVTV_IOC_PASSTHROUGH_MODE:
case VIDEO_PLAY:
case VIDEO_STOP:
case VIDEO_FREEZE:
@ -1811,6 +1818,7 @@ static long ivtv_default(struct file *file, void *fh, bool valid_prio,
}
case IVTV_IOC_DMA_FRAME:
case IVTV_IOC_PASSTHROUGH_MODE:
case VIDEO_GET_PTS:
case VIDEO_GET_FRAME_COUNT:
case VIDEO_GET_EVENT:

6
include/linux/ivtv.h
View file

@ -58,7 +58,11 @@ struct ivtv_dma_frame {
__u32 src_height;
};
#define IVTV_IOC_DMA_FRAME _IOW ('V', BASE_VIDIOC_PRIVATE+0, struct ivtv_dma_frame)
#define IVTV_IOC_DMA_FRAME _IOW ('V', BASE_VIDIOC_PRIVATE+0, struct ivtv_dma_frame)
/* Select the passthrough mode (if the argument is non-zero). In the passthrough
mode the output of the encoder is passed immediately into the decoder. */
#define IVTV_IOC_PASSTHROUGH_MODE _IOW ('V', BASE_VIDIOC_PRIVATE+1, int)
/* Deprecated defines: applications should use the defines from videodev2.h */
#define IVTV_SLICED_TYPE_TELETEXT_B V4L2_MPEG_VBI_IVTV_TELETEXT_B