mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-10-02 08:42:32 +00:00
Code Issues 1 Projects Releases Wiki Activity

videosignal: add support for packed YUV formats

Browse source
This commit is contained in:
René Stadler 2009-09-04 22:50:34 +03:00
parent d171d713f3
commit 36ae3ad844
2 changed files with 50 additions and 42 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

47
gst/videosignal/gstvideodetect.c
View file

@ -145,14 +145,16 @@ static GstStaticPadTemplate gst_video_detect_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YV12, Y41B, Y42B, Y444 }"))
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
("{ I420, YV12, Y41B, Y42B, Y444, YUY2, UYVY, AYUV, YVYU }"))
);
static GstStaticPadTemplate gst_video_detect_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YV12, Y41B, Y42B, Y444 }"))
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
("{ I420, YV12, Y41B, Y42B, Y444, YUY2, UYVY, AYUV, YVYU }"))
);
static GstVideoFilterClass *parent_class = NULL;
@ -212,7 +214,7 @@ gst_video_detect_post_message (GstVideoDetect * videodetect, GstBuffer * buffer,
static gdouble
gst_video_detect_calc_brightness (GstVideoDetect * videodetect, guint8 * data,
gint width, gint height, gint stride)
gint width, gint height, gint row_stride, gint pixel_stride)
{
gint i, j;
guint64 sum;
@ -220,10 +222,9 @@ gst_video_detect_calc_brightness (GstVideoDetect * videodetect, guint8 * data,
sum = 0;
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
sum += data[j];
sum += data[pixel_stride * j];
}
/* move to next line */
data += stride;
data += row_stride;
}
return sum / (255.0 * width * height);
}
@ -233,8 +234,8 @@ gst_video_detect_yuv (GstVideoDetect * videodetect, GstBuffer * buffer)
{
GstVideoFormat format;
gdouble brightness;
gint i, pw, ph, stride, width, height;
gint req_width, req_height;
gint i, pw, ph, row_stride, pixel_stride, offset;
gint width, height, req_width, req_height;
guint8 *d, *data;
guint pattern_data;
@ -246,7 +247,9 @@ gst_video_detect_yuv (GstVideoDetect * videodetect, GstBuffer * buffer)
pw = videodetect->pattern_width;
ph = videodetect->pattern_height;
stride = gst_video_format_get_row_stride (format, 0, width);
row_stride = gst_video_format_get_row_stride (format, 0, width);
pixel_stride = gst_video_format_get_pixel_stride (format, 0);
offset = gst_video_format_get_component_offset (format, 0, width, height);
req_width =
(videodetect->pattern_count + videodetect->pattern_data_count) * pw +
@ -258,16 +261,16 @@ gst_video_detect_yuv (GstVideoDetect * videodetect, GstBuffer * buffer)
/* analyse the bottom left pixels */
for (i = 0; i < videodetect->pattern_count; i++) {
d = data;
d = data + offset;
/* move to start of bottom left, adjust for offsets */
d += stride * (height - ph - videodetect->bottom_offset) +
videodetect->left_offset;
d += row_stride * (height - ph - videodetect->bottom_offset) +
pixel_stride * videodetect->left_offset;
/* move to i-th pattern */
d += pw * i;
d += pixel_stride * pw * i;
/* calc brightness of width * height box */
brightness =
gst_video_detect_calc_brightness (videodetect, d, pw, ph, stride);
brightness = gst_video_detect_calc_brightness (videodetect, d, pw, ph,
row_stride, pixel_stride);
GST_DEBUG_OBJECT (videodetect, "brightness %f", brightness);
@ -291,18 +294,18 @@ gst_video_detect_yuv (GstVideoDetect * videodetect, GstBuffer * buffer)
/* get the data of the pattern */
for (i = 0; i < videodetect->pattern_data_count; i++) {
d = data;
d = data + offset;
/* move to start of bottom left, adjust for offsets */
d += stride * (height - ph - videodetect->bottom_offset) +
videodetect->left_offset;
d += row_stride * (height - ph - videodetect->bottom_offset) +
pixel_stride * videodetect->left_offset;
/* move after the fixed pattern */
d += (videodetect->pattern_count * pw);
d += pixel_stride * (videodetect->pattern_count * pw);
/* move to i-th pattern data */
d += pw * i;
d += pixel_stride * pw * i;
/* calc brightness of width * height box */
brightness =
gst_video_detect_calc_brightness (videodetect, d, pw, ph, stride);
brightness = gst_video_detect_calc_brightness (videodetect, d, pw, ph,
row_stride, pixel_stride);
/* update pattern, we just use the center to decide between black and white. */
pattern_data <<= 1;
if (brightness > videodetect->pattern_center)

45
gst/videosignal/gstvideomark.c
View file

@ -92,14 +92,16 @@ static GstStaticPadTemplate gst_video_mark_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YV12, Y41B, Y42B, Y444 }"))
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
("{ I420, YV12, Y41B, Y42B, Y444, YUY2, UYVY, AYUV, YVYU }"))
);
static GstStaticPadTemplate gst_video_mark_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YV12, Y41B, Y42B, Y444 }"))
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
("{ I420, YV12, Y41B, Y42B, Y444, YUY2, UYVY, AYUV, YVYU }"))
);
static GstVideoFilterClass *parent_class = NULL;
@ -129,16 +131,15 @@ gst_video_mark_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
static void
gst_video_mark_draw_box (GstVideoMark * videomark, guint8 * data,
gint width, gint height, gint stride, guint8 color)
gint width, gint height, gint row_stride, gint pixel_stride, guint8 color)
{
gint i, j;
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
data[j] = color;
data[pixel_stride * j] = color;
}
/* move to next line */
data += stride;
data += row_stride;
}
}
@ -146,8 +147,8 @@ static GstFlowReturn
gst_video_mark_yuv (GstVideoMark * videomark, GstBuffer * buffer)
{
GstVideoFormat format;
gint i, pw, ph, stride, width, height;
gint req_width, req_height;
gint i, pw, ph, row_stride, pixel_stride, offset;
gint width, height, req_width, req_height;
guint8 *d, *data;
guint pattern_shift;
guint8 color;
@ -160,7 +161,9 @@ gst_video_mark_yuv (GstVideoMark * videomark, GstBuffer * buffer)
pw = videomark->pattern_width;
ph = videomark->pattern_height;
stride = gst_video_format_get_row_stride (format, 0, width);
row_stride = gst_video_format_get_row_stride (format, 0, width);
pixel_stride = gst_video_format_get_pixel_stride (format, 0);
offset = gst_video_format_get_component_offset (format, 0, width, height);
req_width =
(videomark->pattern_count + videomark->pattern_data_count) * pw +
@ -175,12 +178,12 @@ gst_video_mark_yuv (GstVideoMark * videomark, GstBuffer * buffer)
/* draw the bottom left pixels */
for (i = 0; i < videomark->pattern_count; i++) {
d = data;
d = data + offset;
/* move to start of bottom left */
d += stride * (height - ph - videomark->bottom_offset) +
videomark->left_offset;
d += row_stride * (height - ph - videomark->bottom_offset) +
pixel_stride * videomark->left_offset;
/* move to i-th pattern */
d += pw * i;
d += pixel_stride * pw * i;
if (i & 1)
/* odd pixels must be white */
@ -189,28 +192,30 @@ gst_video_mark_yuv (GstVideoMark * videomark, GstBuffer * buffer)
color = 0;
/* draw box of width * height */
gst_video_mark_draw_box (videomark, d, pw, ph, stride, color);
gst_video_mark_draw_box (videomark, d, pw, ph, row_stride, pixel_stride,
color);
}
pattern_shift = 1 << (videomark->pattern_data_count - 1);
/* get the data of the pattern */
for (i = 0; i < videomark->pattern_data_count; i++) {
d = data;
d = data + offset;
/* move to start of bottom left, adjust for offsets */
d += stride * (height - ph - videomark->bottom_offset) +
videomark->left_offset;
d += row_stride * (height - ph - videomark->bottom_offset) +
pixel_stride * videomark->left_offset;
/* move after the fixed pattern */
d += (videomark->pattern_count * pw);
d += pixel_stride * videomark->pattern_count * pw;
/* move to i-th pattern data */
d += pw * i;
d += pixel_stride * pw * i;
if (videomark->pattern_data & pattern_shift)
color = 255;
else
color = 0;
gst_video_mark_draw_box (videomark, d, pw, ph, stride, color);
gst_video_mark_draw_box (videomark, d, pw, ph, row_stride, pixel_stride,
color);
pattern_shift >>= 1;
}