diff options
Diffstat (limited to 'drivers/media/video/cx2341x.c')
| -rw-r--r-- | drivers/media/video/cx2341x.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/media/video/cx2341x.c b/drivers/media/video/cx2341x.c index 657e0b96914..2f5ca71e026 100644 --- a/drivers/media/video/cx2341x.c +++ b/drivers/media/video/cx2341x.c @@ -742,7 +742,6 @@ int cx2341x_update(void *priv, cx2341x_mbox_func func, if (old == NULL || old->width != new->width || old->height != new->height || old->video_encoding != new->video_encoding) { - int is_scaling; u16 w = new->width; u16 h = new->height; @@ -752,20 +751,18 @@ int cx2341x_update(void *priv, cx2341x_mbox_func func, } err = cx2341x_api(priv, func, CX2341X_ENC_SET_FRAME_SIZE, 2, h, w); if (err) return err; + } + if (new->width != 720 || new->height != (new->is_50hz ? 576 : 480)) { /* Adjust temporal filter if necessary. The problem with the temporal filter is that it works well with full resolution capturing, but not when the capture window is scaled (the filter introduces - a ghosting effect). So if the capture window changed, and there is - no updated filter value, then the filter is set depending on whether - the new window is full resolution or not. + a ghosting effect). So if the capture window is scaled, then + force the filter to 0. - For full resolution a setting of 8 really improves the video + For full resolution the filter really improves the video quality, especially if the original video quality is suboptimal. */ - is_scaling = new->width != 720 || new->height != (new->is_50hz ? 576 : 480); - if (old && old->video_temporal_filter == temporal) { - temporal = is_scaling ? 0 : 8; - } + temporal = 0; } if (old == NULL || old->stream_type != new->stream_type) { @@ -866,6 +863,7 @@ invalid: void cx2341x_log_status(struct cx2341x_mpeg_params *p, const char *prefix) { int is_mpeg1 = p->video_encoding == V4L2_MPEG_VIDEO_ENCODING_MPEG_1; + int temporal = p->video_temporal_filter; /* Stream */ printk(KERN_INFO "%s: Stream: %s\n", @@ -922,10 +920,13 @@ void cx2341x_log_status(struct cx2341x_mpeg_params *p, const char *prefix) cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE), cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE), p->video_spatial_filter); + if (p->width != 720 || p->height != (p->is_50hz ? 576 : 480)) { + temporal = 0; + } printk(KERN_INFO "%s: Temporal Filter: %s, %d\n", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE), - p->video_temporal_filter); + temporal); printk(KERN_INFO "%s: Median Filter: %s, Luma [%d, %d], Chroma [%d, %d]\n", prefix, cx2341x_menu_item(p, V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE), |