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video-scaler: fix taps in interlaced mode
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parent
562416bb94
commit
67a4702b19
1 changed files with 10 additions and 2 deletions
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@ -283,7 +283,7 @@ resampler_convert_coeff (const gdouble * src,
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static void
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make_s16_taps (GstVideoScaler * scale, gint precision)
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{
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gint i, j, max_taps, n_phases, out_size;
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gint i, j, max_taps, n_phases, out_size, src_inc;
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gint16 *taps_s16, *taps_s16_4;
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gdouble *taps;
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guint32 *phase, *offset, *offset_n;
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@ -291,6 +291,13 @@ make_s16_taps (GstVideoScaler * scale, gint precision)
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n_phases = scale->resampler.n_phases;
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max_taps = scale->resampler.max_taps;
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if (scale->flags & GST_VIDEO_SCALER_FLAG_INTERLACED)
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src_inc = 2;
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else
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src_inc = 1;
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max_taps /= src_inc;
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taps = scale->resampler.taps;
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taps_s16 = scale->taps_s16 = g_malloc (sizeof (gint16) * n_phases * max_taps);
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@ -312,11 +319,12 @@ make_s16_taps (GstVideoScaler * scale, gint precision)
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offset_n = scale->offset_n =
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g_malloc (sizeof (guint32) * out_size * max_taps);
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for (j = 0; j < max_taps; j++) {
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for (i = 0; i < out_size; i++) {
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gint16 tap;
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offset_n[j * out_size + i] = offset[i] + j;
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offset_n[j * out_size + i] = offset[i] + j * src_inc;
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tap = taps_s16[phase[i] * max_taps + j];
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taps_s16_4[(j * out_size + i) * 4 + 0] = tap;
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taps_s16_4[(j * out_size + i) * 4 + 1] = tap;
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