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video-converter: activate scaler fastpath depending on method

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Only activate the scaler fastpath for x2 up and downscale when the
scaler method is respectively nearest and linear because that is what
those fastpaths really implement.
This commit is contained in:
Wim Taymans 2015-02-25 16:15:52 +01:00
parent 9e8799924b
commit 3046935e03
1 changed files with 17 additions and 10 deletions
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27
gst-libs/gst/video/video-converter.c
View file

@ -3948,6 +3948,7 @@ setup_scale (GstVideoConverter * convert)
gint comp, n_comp, j, iw, ih, ow, oh, pstride;
gboolean need_v_scaler, need_h_scaler;
GstStructure *config;
gint resample_method;
n_comp = GST_VIDEO_FORMAT_INFO_N_COMPONENTS (in_finfo);
@ -4016,16 +4017,20 @@ setup_scale (GstVideoConverter * convert)
config = gst_structure_copy (convert->config);
resample_method = (i == 0 ? method : cr_method);
need_v_scaler = FALSE;
need_h_scaler = FALSE;
if (iw == ow) {
if (ih == oh) {
convert->fconvert[i] = convert_plane_copy;
GST_DEBUG ("plane %d: copy", i);
} else if (ih == 2 * oh && pstride == 1) {
} else if (ih == 2 * oh && pstride == 1
&& resample_method == GST_VIDEO_RESAMPLER_METHOD_LINEAR) {
convert->fconvert[i] = convert_plane_v_halve;
GST_DEBUG ("plane %d: vertical halve", i);
} else if (2 * ih == oh && pstride == 1) {
} else if (2 * ih == oh && pstride == 1
&& resample_method == GST_VIDEO_RESAMPLER_METHOD_NEAREST) {
convert->fconvert[i] = convert_plane_v_double;
GST_DEBUG ("plane %d: vertical double", i);
} else {
@ -4034,10 +4039,12 @@ setup_scale (GstVideoConverter * convert)
need_v_scaler = TRUE;
}
} else if (ih == oh) {
if (iw == 2 * ow && pstride == 1) {
if (iw == 2 * ow && pstride == 1
&& resample_method == GST_VIDEO_RESAMPLER_METHOD_LINEAR) {
convert->fconvert[i] = convert_plane_h_halve;
GST_DEBUG ("plane %d: horizontal halve", i);
} else if (2 * iw == ow && pstride == 1) {
} else if (2 * iw == ow && pstride == 1
&& resample_method == GST_VIDEO_RESAMPLER_METHOD_NEAREST) {
convert->fconvert[i] = convert_plane_h_double;
GST_DEBUG ("plane %d: horizontal double", i);
} else {
@ -4046,10 +4053,12 @@ setup_scale (GstVideoConverter * convert)
need_h_scaler = TRUE;
}
} else {
if (iw == 2 * ow && ih == 2 * oh && pstride == 1) {
if (iw == 2 * ow && ih == 2 * oh && pstride == 1
&& resample_method == GST_VIDEO_RESAMPLER_METHOD_LINEAR) {
convert->fconvert[i] = convert_plane_hv_halve;
GST_DEBUG ("plane %d: horizontal/vertical halve", i);
} else if (2 * iw == ow && 2 * ih == oh && pstride == 1) {
} else if (2 * iw == ow && 2 * ih == oh && pstride == 1
&& resample_method == GST_VIDEO_RESAMPLER_METHOD_NEAREST) {
convert->fconvert[i] = convert_plane_hv_double;
GST_DEBUG ("plane %d: horizontal/vertical double", i);
} else {
@ -4061,15 +4070,13 @@ setup_scale (GstVideoConverter * convert)
}
if (need_h_scaler) {
convert->fh_scaler[i] =
gst_video_scaler_new (i == 0 ? method : cr_method,
convert->fh_scaler[i] = gst_video_scaler_new (resample_method,
GST_VIDEO_SCALER_FLAG_NONE, taps, iw, ow, config);
} else
convert->fh_scaler[i] = NULL;
if (need_v_scaler) {
convert->fv_scaler[i] =
gst_video_scaler_new (i == 0 ? method : cr_method,
convert->fv_scaler[i] = gst_video_scaler_new (resample_method,
GST_VIDEO_SCALER_FLAG_NONE, taps, ih, oh, config);
gst_video_scaler_get_coeff (convert->fv_scaler[i], 0, NULL, &n_taps);
} else