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video-converter: keep separate lines with border

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Make separate with a border around them so that we can avoid a memcpy.
This commit is contained in:
Wim Taymans 2014-11-05 11:54:31 +01:00
parent cf970376df
commit 7888b4f9fa
1 changed files with 54 additions and 26 deletions
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80
gst-libs/gst/video/video-converter.c
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@ -96,6 +96,10 @@ struct _GstVideoConverter
guint16 *errline;
guint tmplines_idx;
guint n_btmplines;
gpointer *btmplines;
guint btmplines_idx;
gboolean fill_border;
gpointer borderline;
guint32 border_argb;
@ -289,18 +293,25 @@ static gboolean do_hscale_lines (GstLineCache * cache, gint out_line,
gint in_line, gpointer user_data);
static void
alloc_tmplines (GstVideoConverter * convert, guint lines, gint width)
alloc_tmplines (GstVideoConverter * convert, guint lines, guint blines,
gint width)
{
gint i;
convert->n_tmplines = lines;
convert->tmplines = g_malloc (lines * sizeof (gpointer));
for (i = 0; i < lines; i++) {
for (i = 0; i < lines; i++)
convert->tmplines[i] = g_malloc (sizeof (guint16) * (width + 8) * 4);
if (convert->borderline)
memcpy (convert->tmplines[i], convert->borderline, width * 8);
}
convert->tmplines_idx = 0;
convert->n_btmplines = blines;
convert->btmplines = g_malloc (blines * sizeof (gpointer));
for (i = 0; i < blines; i++) {
convert->btmplines[i] = g_malloc (sizeof (guint16) * (width + 8) * 4);
if (convert->borderline)
memcpy (convert->btmplines[i], convert->borderline, width * 8);
}
convert->btmplines_idx = 0;
}
static gpointer
@ -317,6 +328,20 @@ get_temp_line (GstLineCache * cache, gint idx, gpointer user_data)
return tmpline;
}
static gpointer
get_border_temp_line (GstLineCache * cache, gint idx, gpointer user_data)
{
GstVideoConverter *convert = user_data;
gpointer tmpline;
GST_DEBUG ("get border temp line %d", idx);
tmpline = (guint8 *) convert->btmplines[convert->btmplines_idx] +
(convert->out_x * convert->pack_pstride);
convert->btmplines_idx = (convert->btmplines_idx + 1) % convert->n_btmplines;
return tmpline;
}
static GstLineCache *
chain_unpack_line (GstVideoConverter * convert)
{
@ -495,7 +520,7 @@ setup_allocators (GstVideoConverter * convert)
if (convert->identity_pack)
alloc_line = get_dest_line;
else
alloc_line = get_temp_line;
alloc_line = get_border_temp_line;
/* now walk backwards, we try to write into the dest lines directly
* and keep track if the source needs to be writable */
@ -699,7 +724,7 @@ gst_video_converter_new (GstVideoInfo * in_info, GstVideoInfo * out_info,
}
/* FIXME */
alloc_tmplines (convert, 64, width);
alloc_tmplines (convert, 64, 4, width);
done:
return convert;
@ -761,6 +786,9 @@ gst_video_converter_free (GstVideoConverter * convert)
for (i = 0; i < convert->n_tmplines; i++)
g_free (convert->tmplines[i]);
g_free (convert->tmplines);
for (i = 0; i < convert->n_btmplines; i++)
g_free (convert->btmplines[i]);
g_free (convert->btmplines);
g_free (convert->errline);
g_free (convert->borderline);
@ -1347,10 +1375,22 @@ get_dest_line (GstLineCache * cache, gint idx, gpointer user_data)
{
GstVideoConverter *convert = user_data;
guint8 *line;
gint pstride = convert->pack_pstride;
gint out_x = convert->out_x;
GST_DEBUG ("get dest line %d", idx);
line = FRAME_GET_LINE (convert->dest, idx);
line += convert->out_x * convert->pack_pstride;
if (convert->borderline) {
gint r_border = (out_x + convert->out_width) * pstride;
gint rb_width = convert->out_maxwidth * pstride - r_border;
gint lb_width = out_x * pstride;
memcpy (line, convert->borderline, lb_width);
memcpy (line + r_border, convert->borderline, rb_width);
}
line += out_x * pstride;
return line;
}
@ -1520,9 +1560,8 @@ video_converter_generic (GstVideoConverter * convert, const GstVideoFrame * src,
gint out_maxwidth, out_maxheight;
gint out_x, out_y, out_height;
gint pack_lines, pstride;
gint r_border, out_width, lb_width, rb_width;
gint lb_width;
out_width = convert->out_width;
out_height = convert->out_height;
out_maxwidth = convert->out_maxwidth;
out_maxheight = convert->out_maxheight;
@ -1536,8 +1575,6 @@ video_converter_generic (GstVideoConverter * convert, const GstVideoFrame * src,
pack_lines = convert->lines; /* only 1 for now */
pstride = convert->pack_pstride;
r_border = (out_x + out_width) * pstride;
rb_width = out_maxwidth * pstride - r_border;
lb_width = out_x * pstride;
if (convert->borderline) {
@ -1548,23 +1585,14 @@ video_converter_generic (GstVideoConverter * convert, const GstVideoFrame * src,
for (i = 0; i < out_height; i += pack_lines) {
gpointer *lines;
guint8 *l;
/* load the lines needed to pack */
lines =
gst_line_cache_get_lines (convert->pack_lines, i + out_y, i,
pack_lines);
lines = gst_line_cache_get_lines (convert->pack_lines, i + out_y,
i, pack_lines);
/* take away the border */
l = ((guint8 *) lines[0]) - lb_width;
if (convert->borderline) {
/* FIXME this can be optimized if we make separate temp lines with
* border for the output lines */
memcpy (l, convert->borderline, lb_width);
memcpy (l + r_border, convert->borderline, rb_width);
}
if (!convert->identity_pack) {
/* take away the border */
guint8 *l = ((guint8 *) lines[0]) - lb_width;
/* and pack into destination */
GST_DEBUG ("pack line %d", i + out_y);
PACK_FRAME (dest, l, i + out_y, out_maxwidth);
@ -2417,7 +2445,7 @@ video_converter_lookup_fastpath (GstVideoConverter * convert)
if (transforms[i].needs_color_matrix)
video_converter_compute_matrix (convert);
convert->convert = transforms[i].convert;
alloc_tmplines (convert, 1, GST_VIDEO_INFO_WIDTH (&convert->in_info));
alloc_tmplines (convert, 1, 0, GST_VIDEO_INFO_WIDTH (&convert->in_info));
return TRUE;
}
}