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[MOVED FROM BAD 36/56] gst/deinterlace2/gstdeinterlace2.*: Add a GstDeinterlaceSimpleMethod subclass of GstDeinterlaceMethod that can be use...
Original commit message from CVS: * gst/deinterlace2/gstdeinterlace2.c: (gst_deinterlace_simple_method_interpolate_scanline), (gst_deinterlace_simple_method_copy_scanline), (gst_deinterlace_simple_method_deinterlace_frame), (gst_deinterlace_simple_method_class_init), (gst_deinterlace_simple_method_init): * gst/deinterlace2/gstdeinterlace2.h: Add a GstDeinterlaceSimpleMethod subclass of GstDeinterlaceMethod that can be used by simple deinterlacing methods. They only have to provide a function for interpolating a scanline or copying a scanline.
This commit is contained in:
Sebastian Dröge
Sebastian Dröge
parent
720506a499
commit
2403fa4e4c
2 changed files with 225 additions and 0 deletions
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@ -89,6 +89,169 @@ gst_deinterlace_method_get_latency (GstDeinterlaceMethod * self)
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return klass->latency;
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}
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G_DEFINE_TYPE (GstDeinterlaceSimpleMethod, gst_deinterlace_simple_method,
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GST_TYPE_DEINTERLACE_METHOD);
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static void
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gst_deinterlace_simple_method_interpolate_scanline (GstDeinterlaceMethod * self,
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GstDeinterlace2 * parent, guint8 * out,
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GstDeinterlaceScanlineData * scanlines, gint width)
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{
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memcpy (out, scanlines->m1, parent->line_length);
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}
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static void
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gst_deinterlace_simple_method_copy_scanline (GstDeinterlaceMethod * self,
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GstDeinterlace2 * parent, guint8 * out,
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GstDeinterlaceScanlineData * scanlines, gint width)
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{
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memcpy (out, scanlines->m0, parent->line_length);
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}
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static void
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gst_deinterlace_simple_method_deinterlace_frame (GstDeinterlaceMethod * self,
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GstDeinterlace2 * parent)
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{
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GstDeinterlaceSimpleMethodClass *dsm_class =
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GST_DEINTERLACE_SIMPLE_METHOD_GET_CLASS (self);
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GstDeinterlaceMethodClass *dm_class = GST_DEINTERLACE_METHOD_GET_CLASS (self);
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GstDeinterlaceScanlineData scanlines;
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guint8 *out = GST_BUFFER_DATA (parent->out_buf);
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guint8 *field0 = NULL, *field1 = NULL, *field2 = NULL, *field3 = NULL;
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gint cur_field_idx = parent->history_count - dm_class->fields_required;
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guint cur_field_flags = parent->field_history[cur_field_idx].flags;
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gint line;
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field0 = GST_BUFFER_DATA (parent->field_history[cur_field_idx].buf);
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g_assert (dm_class->fields_required <= 4);
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if (dm_class->fields_required >= 2)
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field1 = field0 =
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GST_BUFFER_DATA (parent->field_history[cur_field_idx + 1].buf);
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if (dm_class->fields_required >= 3)
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field1 = field0 =
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GST_BUFFER_DATA (parent->field_history[cur_field_idx + 2].buf);
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if (dm_class->fields_required >= 4)
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field1 = field0 =
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GST_BUFFER_DATA (parent->field_history[cur_field_idx + 3].buf);
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if (cur_field_flags == PICTURE_INTERLACED_BOTTOM) {
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/* double the first scanline of the bottom field */
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memcpy (out, field0, parent->line_length);
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out += parent->output_stride;
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}
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memcpy (out, field0, parent->line_length);
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out += parent->output_stride;
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for (line = 2; line <= parent->field_height; line++) {
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memset (&scanlines, 0, sizeof (scanlines));
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scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
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/* interp. scanline */
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scanlines.t0 = field0;
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scanlines.b0 = field0 + parent->field_stride;
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if (field1 != NULL) {
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scanlines.tt1 = field1;
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scanlines.m1 = field1 + parent->field_stride;
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scanlines.bb1 = field1 + parent->field_stride * 2;
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field1 += parent->field_stride;
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}
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if (field2 != NULL) {
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scanlines.t2 = field2;
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scanlines.b2 = field2 + parent->field_stride;
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}
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if (field3 != NULL) {
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scanlines.tt3 = field3;
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scanlines.m3 = field3 + parent->field_stride;
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scanlines.bb3 = field3 + parent->field_stride * 2;
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field3 += parent->field_stride;
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}
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/* set valid data for corner cases */
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if (line == 2) {
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scanlines.tt1 = scanlines.bb1;
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scanlines.tt3 = scanlines.bb3;
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} else if (line == parent->field_height) {
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scanlines.bb1 = scanlines.tt1;
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scanlines.bb3 = scanlines.tt3;
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}
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dsm_class->interpolate_scanline (self, parent, out, &scanlines,
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parent->frame_width);
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out += parent->output_stride;
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memset (&scanlines, 0, sizeof (scanlines));
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scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
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/* copy a scanline */
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scanlines.tt0 = field0;
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scanlines.m0 = field0 + parent->field_stride;
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scanlines.bb0 = field0 + parent->field_stride * 2;
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field0 += parent->field_stride;
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if (field1 != NULL) {
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scanlines.t1 = field1;
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scanlines.b1 = field1 + parent->field_stride;
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}
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if (field2 != NULL) {
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scanlines.tt2 = field2;
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scanlines.m2 = field2 + parent->field_stride;
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scanlines.bb2 = field2 + parent->field_stride * 2;
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field2 += parent->field_stride;
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}
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if (field3 != NULL) {
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scanlines.t3 = field3;
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scanlines.b3 = field3 + parent->field_stride;
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}
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/* set valid data for corner cases */
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if (line == parent->field_height) {
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scanlines.bb0 = scanlines.tt0;
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scanlines.b1 = scanlines.t1;
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scanlines.bb2 = scanlines.tt2;
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scanlines.b3 = scanlines.t3;
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}
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dsm_class->copy_scanline (self, parent, out, &scanlines,
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parent->frame_width);
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out += parent->output_stride;
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}
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if (cur_field_flags == PICTURE_INTERLACED_TOP) {
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/* double the last scanline of the top field */
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memcpy (out, field0, parent->line_length);
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}
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}
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static void
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gst_deinterlace_simple_method_class_init (GstDeinterlaceSimpleMethodClass *
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klass)
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{
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GstDeinterlaceMethodClass *dm_class = (GstDeinterlaceMethodClass *) klass;
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dm_class->deinterlace_frame = gst_deinterlace_simple_method_deinterlace_frame;
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dm_class->fields_required = 2;
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klass->interpolate_scanline =
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gst_deinterlace_simple_method_interpolate_scanline;
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klass->copy_scanline = gst_deinterlace_simple_method_copy_scanline;
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}
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static void
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gst_deinterlace_simple_method_init (GstDeinterlaceSimpleMethod * self)
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{
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}
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#define GST_TYPE_DEINTERLACE2_METHODS (gst_deinterlace2_methods_get_type ())
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static GType
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gst_deinterlace2_methods_get_type (void)
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@ -84,6 +84,68 @@ struct _GstDeinterlaceMethodClass {
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GType gst_deinterlace_method_get_type (void);
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#define GST_TYPE_DEINTERLACE_SIMPLE_METHOD (gst_deinterlace_simple_method_get_type ())
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#define GST_IS_DEINTERLACE_SIMPLE_METHOD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DEINTERLACE_SIMPLE_METHOD))
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#define GST_IS_DEINTERLACE_SIMPLE_METHOD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DEINTERLACE_SIMPLE_METHOD))
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#define GST_DEINTERLACE_SIMPLE_METHOD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DEINTERLACE_SIMPLE_METHOD, GstDeinterlaceSimpleMethodClass))
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#define GST_DEINTERLACE_SIMPLE_METHOD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DEINTERLACE_SIMPLE_METHOD, GstDeinterlaceSimpleMethod))
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#define GST_DEINTERLACE_SIMPLE_METHOD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DEINTERLACE_SIMPLE_METHOD, GstDeinterlaceSimpleMethodClass))
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#define GST_DEINTERLACE_SIMPLE_METHOD_CAST(obj) ((GstDeinterlaceSimpleMethod*)(obj))
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typedef struct _GstDeinterlaceSimpleMethod GstDeinterlaceSimpleMethod;
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typedef struct _GstDeinterlaceSimpleMethodClass GstDeinterlaceSimpleMethodClass;
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typedef struct _GstDeinterlaceScanlineData GstDeinterlaceScanlineData;
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/*
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* This structure defines the simple deinterlacer plugin.
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*/
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struct _GstDeinterlaceScanlineData {
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guint8 *tt0, *t0, *m0, *b0, *bb0;
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guint8 *tt1, *t1, *m1, *b1, *bb1;
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guint8 *tt2, *t2, *m2, *b2, *bb2;
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guint8 *tt3, *t3, *m3, *b3, *bb3;
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gboolean bottom_field;
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};
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/**
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* For interpolate_scanline the input is:
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*
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* | t-3 t-2 t-1 t
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* | Field 3 | Field 2 | Field 1 | Field 0 |
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* | TT3 | | TT1 | |
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* | | T2 | | T0 |
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* | M3 | | M1 | |
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* | | B2 | | B0 |
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* | BB3 | | BB1 | |
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*
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* For copy_scanline the input is:
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*
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* | t-3 t-2 t-1 t
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* | Field 3 | Field 2 | Field 1 | Field 0 |
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* | | TT2 | | TT0 |
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* | T3 | | T1 | |
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* | | M2 | | M0 |
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* | B3 | | B1 | |
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* | | BB2 | | BB0 |
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*
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* All other values are NULL.
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*/
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struct _GstDeinterlaceSimpleMethod {
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GstDeinterlaceMethod parent;
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};
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struct _GstDeinterlaceSimpleMethodClass {
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GstDeinterlaceMethodClass parent_class;
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void (*interpolate_scanline) (GstDeinterlaceMethod *self, GstDeinterlace2 * parent, guint8 *out, GstDeinterlaceScanlineData *scanlines, gint width);
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void (*copy_scanline) (GstDeinterlaceMethod *self, GstDeinterlace2 * parent, guint8 *out, GstDeinterlaceScanlineData *scanlines, gint width);
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};
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GType gst_deinterlace_simple_method_get_type (void);
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#define MAX_FIELD_HISTORY 10
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#define PICTURE_PROGRESSIVE 0
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