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video-scaler: Enforce same taps on Y and UV scalers for merged formats

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Make sure we have the same number of taps for the Y and UV scalers so
that the scalers can be merged correctly.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=749764
This commit is contained in:
Wim Taymans 2015-06-12 16:47:03 +02:00
parent 37684b35b6
commit f4f3894836
3 changed files with 19 additions and 1 deletions
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3
gst-libs/gst/video/video-converter.c
View file

@ -4040,7 +4040,8 @@ setup_scale (GstVideoConverter * convert)
in_width), GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (out_finfo,
GST_VIDEO_COMP_Y, out_width), convert->config);
uv_scaler =
gst_video_scaler_new (method, GST_VIDEO_SCALER_FLAG_NONE, taps,
gst_video_scaler_new (method, GST_VIDEO_SCALER_FLAG_NONE,
gst_video_scaler_get_max_taps (y_scaler),
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (in_finfo, GST_VIDEO_COMP_U,
in_width), GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (out_finfo,
GST_VIDEO_COMP_U, out_width), convert->config);

16
gst-libs/gst/video/video-scaler.c
View file

@ -248,6 +248,22 @@ gst_video_scaler_free (GstVideoScaler * scale)
g_slice_free (GstVideoScaler, scale);
}
/**
* gst_video_scaler_get_max_taps:
* @scale: a #GstVideoScaler
*
* Get the maximum number of taps for @scale.
*
* Returns: the maximum number of taps
*/
guint
gst_video_scaler_get_max_taps (GstVideoScaler * scale)
{
g_return_val_if_fail (scale != NULL, 0);
return scale->resampler.max_taps;
}
/**
* gst_video_scaler_get_coeff:
* @scale: a #GstVideoScaler

1
gst-libs/gst/video/video-scaler.h
View file

@ -57,6 +57,7 @@ GstVideoScaler * gst_video_scaler_new (GstVideoResamplerMethod m
GstStructure * options);
void gst_video_scaler_free (GstVideoScaler *scale);
guint gst_video_scaler_get_max_taps (GstVideoScaler *scale);
const gdouble * gst_video_scaler_get_coeff (GstVideoScaler *scale,
guint out_offset,
guint *in_offset,