static void
gst_deinterlace_simple_method_deinterlace_frame_packed (GstDeinterlaceMethod *
method, const GstDeinterlaceField * history, guint history_count,
GstBuffer * outbuf)
{
GstDeinterlaceSimpleMethod *self = GST_DEINTERLACE_SIMPLE_METHOD (method);
GstDeinterlaceMethodClass *dm_class = GST_DEINTERLACE_METHOD_GET_CLASS (self);
GstDeinterlaceScanlineData scanlines;
guint8 *out = GST_BUFFER_DATA (outbuf);
const guint8 *field0 = NULL, *field1 = NULL, *field2 = NULL, *field3 = NULL;
gint cur_field_idx = history_count - dm_class->fields_required;
guint cur_field_flags = history[cur_field_idx].flags;
gint line;
gint field_height = self->parent.frame_height / 2;
gint row_stride = self->parent.row_stride[0];
gint field_stride = self->parent.row_stride[0] * 2;
g_assert (self->interpolate_scanline_packed != NULL);
g_assert (self->copy_scanline_packed != NULL);
field0 = GST_BUFFER_DATA (history[cur_field_idx].buf);
if (history[cur_field_idx].flags & PICTURE_INTERLACED_BOTTOM)
field0 += row_stride;
g_assert (dm_class->fields_required <= 4);
if (dm_class->fields_required >= 2) {
field1 = GST_BUFFER_DATA (history[cur_field_idx + 1].buf);
if (history[cur_field_idx + 1].flags & PICTURE_INTERLACED_BOTTOM)
field1 += row_stride;
}
if (dm_class->fields_required >= 3) {
field2 = GST_BUFFER_DATA (history[cur_field_idx + 2].buf);
if (history[cur_field_idx + 2].flags & PICTURE_INTERLACED_BOTTOM)
field2 += row_stride;
}
if (dm_class->fields_required >= 4) {
field3 = GST_BUFFER_DATA (history[cur_field_idx + 3].buf);
if (history[cur_field_idx + 3].flags & PICTURE_INTERLACED_BOTTOM)
field3 += row_stride;
}
if (cur_field_flags == PICTURE_INTERLACED_BOTTOM) {
/* double the first scanline of the bottom field */
oil_memcpy (out, field0, row_stride);
out += row_stride;
}
oil_memcpy (out, field0, row_stride);
out += row_stride;
for (line = 2; line <= field_height; line++) {
memset (&scanlines, 0, sizeof (scanlines));
scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
/* interp. scanline */
scanlines.t0 = field0;
scanlines.b0 = field0 + field_stride;
if (field1 != NULL) {
scanlines.tt1 = field1;
scanlines.m1 = field1 + field_stride;
scanlines.bb1 = field1 + field_stride * 2;
field1 += field_stride;
}
if (field2 != NULL) {
scanlines.t2 = field2;
scanlines.b2 = field2 + field_stride;
}
if (field3 != NULL) {
scanlines.tt3 = field3;
scanlines.m3 = field3 + field_stride;
scanlines.bb3 = field3 + field_stride * 2;
field3 += field_stride;
}
/* set valid data for corner cases */
if (line == 2) {
scanlines.tt1 = scanlines.bb1;
scanlines.tt3 = scanlines.bb3;
} else if (line == field_height) {
scanlines.bb1 = scanlines.tt1;
scanlines.bb3 = scanlines.tt3;
}
self->interpolate_scanline_packed (self, out, &scanlines);
out += row_stride;
memset (&scanlines, 0, sizeof (scanlines));
scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
/* copy a scanline */
scanlines.tt0 = field0;
scanlines.m0 = field0 + field_stride;
scanlines.bb0 = field0 + field_stride * 2;
field0 += field_stride;
if (field1 != NULL) {
scanlines.t1 = field1;
scanlines.b1 = field1 + field_stride;
}
if (field2 != NULL) {
scanlines.tt2 = field2;
scanlines.m2 = field2 + field_stride;
scanlines.bb2 = field2 + field_stride * 2;
field2 += field_stride;
}
if (field3 != NULL) {
scanlines.t3 = field3;
scanlines.b3 = field3 + field_stride;
}
/* set valid data for corner cases */
if (line == field_height) {
scanlines.bb0 = scanlines.tt0;
scanlines.b1 = scanlines.t1;
scanlines.bb2 = scanlines.tt2;
scanlines.b3 = scanlines.t3;
}
self->copy_scanline_packed (self, out, &scanlines);
out += row_stride;
}
if (cur_field_flags == PICTURE_INTERLACED_TOP) {
/* double the last scanline of the top field */
oil_memcpy (out, field0, row_stride);
}
}
static void
gst_deinterlace_simple_method_deinterlace_frame_packed (GstDeinterlaceMethod *
method, const GstDeinterlaceField * history, guint history_count,
GstBuffer * outbuf, gint cur_field_idx)
{
GstDeinterlaceSimpleMethod *self = GST_DEINTERLACE_SIMPLE_METHOD (method);
GstDeinterlaceMethodClass *dm_class = GST_DEINTERLACE_METHOD_GET_CLASS (self);
GstDeinterlaceScanlineData scanlines;
guint8 *dest;
const guint8 *field0, *field1, *field2, *fieldp;
guint cur_field_flags = history[cur_field_idx].flags;
gint i;
gint frame_height = self->parent.frame_height;
gint stride = self->parent.row_stride[0];
g_assert (self->interpolate_scanline_packed != NULL);
g_assert (self->copy_scanline_packed != NULL);
if (cur_field_idx > 0) {
fieldp = GST_BUFFER_DATA (history[cur_field_idx - 1].buf);
} else {
fieldp = NULL;
}
dest = GST_BUFFER_DATA (outbuf);
field0 = GST_BUFFER_DATA (history[cur_field_idx].buf);
g_assert (dm_class->fields_required <= 4);
if (cur_field_idx + 1 < history_count) {
field1 = GST_BUFFER_DATA (history[cur_field_idx + 1].buf);
} else {
field1 = NULL;
}
if (cur_field_idx + 2 < history_count) {
field2 = GST_BUFFER_DATA (history[cur_field_idx + 2].buf);
} else {
field2 = NULL;
}
#define CLAMP_LOW(i) (((i)<0) ? (i+2) : (i))
#define CLAMP_HI(i) (((i)>=(frame_height)) ? (i-2) : (i))
#define LINE(x,i) ((x) + CLAMP_HI(CLAMP_LOW(i)) * (stride))
#define LINE2(x,i) ((x) ? LINE(x,i) : NULL)
for (i = 0; i < frame_height; i++) {
memset (&scanlines, 0, sizeof (scanlines));
scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
if (!((i & 1) ^ scanlines.bottom_field)) {
/* copying */
scanlines.tp = LINE2 (fieldp, i - 1);
scanlines.bp = LINE2 (fieldp, i + 1);
scanlines.tt0 = LINE2 (field0, (i - 2 >= 0) ? i - 2 : i);
scanlines.m0 = LINE2 (field0, i);
scanlines.bb0 = LINE2 (field0, (i + 2 < frame_height ? i + 2 : i));
scanlines.t1 = LINE2 (field1, i - 1);
scanlines.b1 = LINE2 (field1, i + 1);
scanlines.tt2 = LINE2 (field2, (i - 2 >= 0) ? i - 2 : i);
scanlines.m2 = LINE2 (field2, i);
scanlines.bb2 = LINE2 (field2, (i + 2 < frame_height ? i + 2 : i));
self->copy_scanline_packed (self, LINE (dest, i), &scanlines);
} else {
/* interpolating */
scanlines.ttp = LINE2 (fieldp, (i - 2 >= 0) ? i - 2 : i);
scanlines.mp = LINE2 (fieldp, i);
scanlines.bbp = LINE2 (fieldp, (i + 2 < frame_height ? i + 2 : i));
scanlines.t0 = LINE2 (field0, i - 1);
scanlines.b0 = LINE2 (field0, i + 1);
scanlines.tt1 = LINE2 (field1, (i - 2 >= 0) ? i - 2 : i);
scanlines.m1 = LINE2 (field1, i);
scanlines.bb1 = LINE2 (field1, (i + 2 < frame_height ? i + 2 : i));
scanlines.t2 = LINE2 (field2, i - 1);
scanlines.b2 = LINE2 (field2, i + 1);
self->interpolate_scanline_packed (self, LINE (dest, i), &scanlines);
}
}
}
