mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-17 22:06:41 +00:00
Code Issues 1 Projects Releases Wiki Activity

videobox: Add support for grayscale input/output

Browse source 
This doesn't do any conversion and is the next step to
replacing videocrop by supporting all remaining formats
in passthrough mode.
This commit is contained in:
Sebastian Dröge 2010-04-07 17:27:12 +02:00
parent 02a4a150e8
commit b4e3532c1f
1 changed files with 85 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

87
gst/videobox/gstvideobox.c
View file

@ -1099,6 +1099,69 @@ copy_ayuv_rgb32 (guint i_alpha, GstVideoFormat dest_format, guint8 * dest,
}
}
static void
fill_gray (GstVideoBoxFill fill_type, guint b_alpha, GstVideoFormat format,
guint8 * dest, gboolean sdtv, gint width, gint height)
{
gint i, j;
gint dest_stride;
if (format == GST_VIDEO_FORMAT_GRAY8) {
guint8 val = yuv_sdtv_colors_Y[fill_type];
dest_stride = GST_ROUND_UP_4 (width);
for (i = 0; i < height; i++) {
oil_splat_u8_ns (dest, &val, width);
dest += dest_stride;
}
} else {
guint16 val = yuv_sdtv_colors_Y[fill_type] << 8;
dest_stride = GST_ROUND_UP_4 (width * 2);
if (format == GST_VIDEO_FORMAT_GRAY16_BE) {
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
GST_WRITE_UINT16_BE (dest + 2 * j, val);
}
dest += dest_stride;
}
} else {
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
GST_WRITE_UINT16_LE (dest + 2 * j, val);
}
dest += dest_stride;
}
}
}
}
static void
copy_packed_simple (guint i_alpha, GstVideoFormat dest_format, guint8 * dest,
gboolean dest_sdtv, gint dest_width, gint dest_height, gint dest_x,
gint dest_y, GstVideoFormat src_format, const guint8 * src,
gboolean src_sdtv, gint src_width, gint src_height, gint src_x, gint src_y,
gint w, gint h)
{
gint i;
gint src_stride, dest_stride;
gint pixel_stride, row_size;
src_stride = gst_video_format_get_row_stride (src_format, 0, src_width);
dest_stride = gst_video_format_get_row_stride (dest_format, 0, dest_width);
pixel_stride = gst_video_format_get_pixel_stride (dest_format, 0);
row_size = w * pixel_stride;
dest = dest + dest_y * dest_stride + dest_x * pixel_stride;
src = src + src_y * src_stride + src_x * pixel_stride;
for (i = 0; i < h; i++) {
oil_copy_u8 (dest, src, row_size);
dest += dest_stride;
src += src_stride;
}
}
#define DEFAULT_LEFT 0
#define DEFAULT_RIGHT 0
#define DEFAULT_TOP 0
@ -1131,7 +1194,10 @@ static GstStaticPadTemplate gst_video_box_src_template =
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR)
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_GRAY8 ";"
GST_VIDEO_CAPS_GRAY16 ("BIG_ENDIAN") ";"
GST_VIDEO_CAPS_GRAY16 ("LITTLE_ENDIAN"))
);
static GstStaticPadTemplate gst_video_box_sink_template =
@ -1144,7 +1210,10 @@ static GstStaticPadTemplate gst_video_box_sink_template =
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR)
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_GRAY8 ";"
GST_VIDEO_CAPS_GRAY16 ("BIG_ENDIAN") ";"
GST_VIDEO_CAPS_GRAY16 ("LITTLE_ENDIAN"))
);
GST_BOILERPLATE (GstVideoBox, gst_video_box, GstBaseTransform,
@ -1719,6 +1788,20 @@ gst_video_box_select_processing_functions (GstVideoBox * video_box)
break;
}
break;
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_GRAY16_BE:
case GST_VIDEO_FORMAT_GRAY16_LE:
video_box->fill = fill_gray;
switch (video_box->in_format) {
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_GRAY16_BE:
case GST_VIDEO_FORMAT_GRAY16_LE:
video_box->copy = copy_packed_simple;
break;
default:
break;
}
break;
default:
break;
}