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video-converter: align offsets to subsampling

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Only apply an offset that is a multiple of the subsampling. To handle
arbitrary offsets in the future, we need to be able to chroma-resample
part of the borders.
This commit is contained in:
Wim Taymans 2014-10-31 11:07:06 +01:00
parent 308d21c71f
commit b3ff9c030f
1 changed files with 10 additions and 0 deletions
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10
gst-libs/gst/video/video-converter.c
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@ -437,6 +437,7 @@ gst_video_converter_new (GstVideoInfo * in_info, GstVideoInfo * out_info,
gint width;
GstLineCacheNeedLineFunc need_line;
gint s2, s3;
const GstVideoFormatInfo *fin, *fout;
g_return_val_if_fail (in_info != NULL, NULL);
g_return_val_if_fail (out_info != NULL, NULL);
@ -449,6 +450,9 @@ gst_video_converter_new (GstVideoInfo * in_info, GstVideoInfo * out_info,
convert = g_slice_new0 (GstVideoConverter);
fin = in_info->finfo;
fout = out_info->finfo;
convert->in_info = *in_info;
convert->out_info = *out_info;
@ -470,6 +474,9 @@ gst_video_converter_new (GstVideoInfo * in_info, GstVideoInfo * out_info,
convert->in_height = get_opt_int (convert,
GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT, convert->in_maxheight);
convert->in_x &= ~((1 << fin->w_sub[1]) - 1);
convert->in_y &= ~((1 << fin->h_sub[1]) - 1);
convert->out_x = get_opt_int (convert, GST_VIDEO_CONVERTER_OPT_DEST_X, 0);
convert->out_y = get_opt_int (convert, GST_VIDEO_CONVERTER_OPT_DEST_Y, 0);
convert->out_width = get_opt_int (convert,
@ -477,6 +484,9 @@ gst_video_converter_new (GstVideoInfo * in_info, GstVideoInfo * out_info,
convert->out_height = get_opt_int (convert,
GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, convert->out_maxheight);
convert->out_x &= ~((1 << fout->w_sub[1]) - 1);
convert->out_y &= ~((1 << fout->h_sub[1]) - 1);
convert->fill_border = get_opt_bool (convert,
GST_VIDEO_CONVERTER_OPT_FILL_BORDER, TRUE);
convert->border_argb = get_opt_uint (convert,