mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-23 18:21:04 +00:00
Code Issues 1 Projects Releases Wiki Activity

video-converter: ORCify 8<->16 conversion

Browse source
This commit is contained in:
Wim Taymans 2014-11-06 16:18:25 +01:00
parent da6f66e550
commit d35c5fd75c
2 changed files with 38 additions and 35 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

71
gst-libs/gst/video/video-converter.c
View file

@ -389,6 +389,9 @@ chain_convert (GstVideoConverter * convert, GstLineCache * prev)
GST_DEBUG ("chain convert");
prev = convert->convert_lines = gst_line_cache_new (prev);
prev->write_input = TRUE;
if (convert->in_bits != convert->out_bits)
prev->pass_alloc = FALSE;
else
prev->pass_alloc = TRUE;
gst_line_cache_set_need_line_func (convert->convert_lines,
do_convert_lines, convert, NULL);
@ -1327,30 +1330,6 @@ video_converter_compute_resample (GstVideoConverter * convert)
convert->down_n_lines);
}
#define TO_16(x) (((x)<<8) | (x))
static void
convert_to16 (gpointer line, gint width)
{
guint8 *line8 = line;
guint16 *line16 = line;
gint i;
for (i = (width - 1) * 4; i >= 0; i--)
line16[i] = TO_16 (line8[i]);
}
static void
convert_to8 (gpointer line, gint width)
{
guint8 *line8 = line;
guint16 *line16 = line;
gint i;
for (i = 0; i < width * 4; i++)
line8[i] = line16[i] >> 8;
}
#define FRAME_GET_PLANE_STRIDE(frame, plane) \
GST_VIDEO_FRAME_PLANE_STRIDE (frame, plane)
#define FRAME_GET_PLANE_LINE(frame, plane, line) \
@ -1516,35 +1495,47 @@ do_convert_lines (GstLineCache * cache, gint out_line, gint in_line,
gpointer user_data)
{
GstVideoConverter *convert = user_data;
gpointer *lines;
gpointer *lines, destline;
guint in_bits, out_bits;
gint width;
lines = gst_line_cache_get_lines (cache->prev, out_line, in_line, 1);
destline = lines[0];
in_bits = convert->in_bits;
out_bits = convert->out_bits;
width = MIN (convert->in_width, convert->out_width);
GST_DEBUG ("convert line %d", in_line);
if (out_bits == 16 || in_bits == 16) {
gpointer srcline = lines[0];
if (out_bits != in_bits)
destline = gst_line_cache_alloc_line (cache, out_line);
/* FIXME, we can scale in the conversion matrix */
if (in_bits == 8)
convert_to16 (lines[0], width);
if (convert->matrix)
convert->matrix (convert, lines[0]);
if (convert->dither16)
convert->dither16 (convert, lines[0], in_line);
if (out_bits == 8)
convert_to8 (lines[0], width);
} else {
if (convert->matrix)
convert->matrix (convert, lines[0]);
if (in_bits == 8) {
GST_DEBUG ("8->16 line %d", in_line);
video_orc_convert_u8_to_u16 (destline, srcline, width * 4);
srcline = destline;
}
gst_line_cache_add_line (cache, in_line, lines[0]);
if (convert->matrix)
convert->matrix (convert, srcline);
if (convert->dither16)
convert->dither16 (convert, srcline, in_line);
if (out_bits == 8) {
GST_DEBUG ("16->8 line %d", in_line);
video_orc_convert_u16_to_u8 (destline, srcline, width * 4);
}
} else {
GST_DEBUG ("convert line %d", in_line);
if (convert->matrix)
convert->matrix (convert, destline);
}
gst_line_cache_add_line (cache, in_line, destline);
return TRUE;
}

12
gst-libs/gst/video/video-orc.orc
View file

@ -530,6 +530,18 @@ addb d1, t, a
copyb d1, s1
.function video_orc_convert_u16_to_u8
.source 2 s guint16
.dest 1 d guint8
convhwb d, s
.function video_orc_convert_u8_to_u16
.source 1 s guint8
.dest 2 d guint16
mergebw d, s, s
.function video_orc_convert_I420_UYVY
.dest 4 d1 guint8
.dest 4 d2 guint8