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path: root/drivers/media/video/pwc/pwc-v4l.c
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Diffstat (limited to 'drivers/media/video/pwc/pwc-v4l.c')
-rw-r--r--drivers/media/video/pwc/pwc-v4l.c60
1 files changed, 59 insertions, 1 deletions
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c
index d5e6bc85064..32fbe1ae625 100644
--- a/drivers/media/video/pwc/pwc-v4l.c
+++ b/drivers/media/video/pwc/pwc-v4l.c
@@ -1168,7 +1168,7 @@ int pwc_video_do_ioctl(struct inode *inode, struct file *file,
buf->sequence = 0;
buf->memory = V4L2_MEMORY_MMAP;
buf->m.offset = pdev->fill_image * pdev->len_per_image;
- buf->length = buf->bytesused;
+ buf->length = pdev->len_per_image;
pwc_next_image(pdev);
PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->index=%d\n",buf->index);
@@ -1193,6 +1193,64 @@ int pwc_video_do_ioctl(struct inode *inode, struct file *file,
return 0;
}
+ case VIDIOC_ENUM_FRAMESIZES:
+ {
+ struct v4l2_frmsizeenum *fsize = arg;
+ unsigned int i = 0, index = fsize->index;
+
+ if (fsize->pixel_format == V4L2_PIX_FMT_YUV420) {
+ for (i = 0; i < PSZ_MAX; i++) {
+ if (pdev->image_mask & (1UL << i)) {
+ if (!index--) {
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete.width = pwc_image_sizes[i].x;
+ fsize->discrete.height = pwc_image_sizes[i].y;
+ return 0;
+ }
+ }
+ }
+ } else if (fsize->index == 0 &&
+ ((fsize->pixel_format == V4L2_PIX_FMT_PWC1 && DEVICE_USE_CODEC1(pdev->type)) ||
+ (fsize->pixel_format == V4L2_PIX_FMT_PWC2 && DEVICE_USE_CODEC23(pdev->type)))) {
+
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete.width = pdev->abs_max.x;
+ fsize->discrete.height = pdev->abs_max.y;
+ return 0;
+ }
+ return -EINVAL;
+ }
+
+ case VIDIOC_ENUM_FRAMEINTERVALS:
+ {
+ struct v4l2_frmivalenum *fival = arg;
+ int size = -1;
+ unsigned int i;
+
+ for (i = 0; i < PSZ_MAX; i++) {
+ if (pwc_image_sizes[i].x == fival->width &&
+ pwc_image_sizes[i].y == fival->height) {
+ size = i;
+ break;
+ }
+ }
+
+ /* TODO: Support raw format */
+ if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420) {
+ return -EINVAL;
+ }
+
+ i = pwc_get_fps(pdev, fival->index, size);
+ if (!i)
+ return -EINVAL;
+
+ fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+ fival->discrete.numerator = 1;
+ fival->discrete.denominator = i;
+
+ return 0;
+ }
+
default:
return pwc_ioctl(pdev, cmd, arg);
} /* ..switch */