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429 lines
13 KiB
C
429 lines
13 KiB
C
/* GStreamer
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* Copyright (C) <2007> Wim Taymans <wim@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-videomark
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* @see_also: #GstVideoDetect
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*
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* This plugin produces #GstVideoMark::pattern-count squares in the bottom left
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* corner of the video frames. The squares have a width and height of
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* respectively #GstVideoMark:pattern-width and #GstVideoMark:pattern-height.
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* Even squares will be black and odd squares will be white.
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*
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* After writing the pattern, #GstVideoMark:pattern-data-count squares after the
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* pattern squares are produced as the bitarray given in
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* #GstVideoMark:pattern-data. 1 bits will produce white squares and 0 bits will
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* produce black squares.
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*
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* The element can be enabled with the #GstVideoMark:enabled property. It is
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* mostly used together with the #GstVideoDetect plugin.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch videotestsrc ! videomark ! ximagesink
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* ]| Add the default black/white squares at the bottom left of the video frames.
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* </refsect2>
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*
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* Last reviewed on 2007-06-01 (0.10.6)
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstvideomark.h"
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#include <string.h>
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#include <math.h>
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#include <gst/video/video.h>
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/* GstVideoMark signals and args */
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#define DEFAULT_PATTERN_WIDTH 4
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#define DEFAULT_PATTERN_HEIGHT 16
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#define DEFAULT_PATTERN_COUNT 4
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#define DEFAULT_PATTERN_DATA_COUNT 5
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#define DEFAULT_PATTERN_DATA 10
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#define DEFAULT_ENABLED TRUE
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#define DEFAULT_LEFT_OFFSET 0
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#define DEFAULT_BOTTOM_OFFSET 0
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enum
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{
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PROP_0,
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PROP_PATTERN_WIDTH,
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PROP_PATTERN_HEIGHT,
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PROP_PATTERN_COUNT,
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PROP_PATTERN_DATA_COUNT,
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PROP_PATTERN_DATA,
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PROP_PATTERN_DATA_64,
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PROP_ENABLED,
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PROP_LEFT_OFFSET,
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PROP_BOTTOM_OFFSET
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};
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GST_DEBUG_CATEGORY_STATIC (video_mark_debug);
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#define GST_CAT_DEFAULT video_mark_debug
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static const GstElementDetails video_mark_details =
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GST_ELEMENT_DETAILS ("Video marker",
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"Filter/Effect/Video",
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"Marks a video signal with a pattern",
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"Wim Taymans <wim@fluendo.com>");
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static GstStaticPadTemplate gst_video_mark_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
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("{ I420, YV12, Y41B, Y42B, Y444, YUY2, UYVY, AYUV, YVYU }"))
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);
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static GstStaticPadTemplate gst_video_mark_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
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("{ I420, YV12, Y41B, Y42B, Y444, YUY2, UYVY, AYUV, YVYU }"))
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);
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static GstVideoFilterClass *parent_class = NULL;
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static gboolean
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gst_video_mark_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
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GstCaps * outcaps)
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{
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GstVideoMark *vf;
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GstStructure *in_s;
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guint32 fourcc;
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gboolean ret;
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vf = GST_VIDEO_MARK (btrans);
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in_s = gst_caps_get_structure (incaps, 0);
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ret = gst_structure_get_int (in_s, "width", &vf->width);
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ret &= gst_structure_get_int (in_s, "height", &vf->height);
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ret &= gst_structure_get_fourcc (in_s, "format", &fourcc);
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if (ret)
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vf->format = gst_video_format_from_fourcc (fourcc);
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return ret;
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}
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static void
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gst_video_mark_draw_box (GstVideoMark * videomark, guint8 * data,
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gint width, gint height, gint row_stride, gint pixel_stride, guint8 color)
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{
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gint i, j;
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for (i = 0; i < height; i++) {
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for (j = 0; j < width; j++) {
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data[pixel_stride * j] = color;
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}
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data += row_stride;
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}
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}
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static GstFlowReturn
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gst_video_mark_yuv (GstVideoMark * videomark, GstBuffer * buffer)
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{
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GstVideoFormat format;
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gint i, pw, ph, row_stride, pixel_stride, offset;
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gint width, height, req_width, req_height;
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guint8 *d, *data;
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guint64 pattern_shift;
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guint8 color;
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data = GST_BUFFER_DATA (buffer);
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format = videomark->format;
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width = videomark->width;
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height = videomark->height;
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pw = videomark->pattern_width;
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ph = videomark->pattern_height;
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row_stride = gst_video_format_get_row_stride (format, 0, width);
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pixel_stride = gst_video_format_get_pixel_stride (format, 0);
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offset = gst_video_format_get_component_offset (format, 0, width, height);
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req_width =
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(videomark->pattern_count + videomark->pattern_data_count) * pw +
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videomark->left_offset;
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req_height = videomark->bottom_offset + ph;
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if (req_width > width || req_height > height) {
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GST_ELEMENT_ERROR (videomark, STREAM, WRONG_TYPE, (NULL),
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("videomark pattern doesn't fit video, need at least %ix%i (stream has %ix%i)",
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req_width, req_height, width, height));
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return GST_FLOW_ERROR;
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}
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/* draw the bottom left pixels */
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for (i = 0; i < videomark->pattern_count; i++) {
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d = data + offset;
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/* move to start of bottom left */
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d += row_stride * (height - ph - videomark->bottom_offset) +
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pixel_stride * videomark->left_offset;
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/* move to i-th pattern */
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d += pixel_stride * pw * i;
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if (i & 1)
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/* odd pixels must be white */
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color = 255;
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else
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color = 0;
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/* draw box of width * height */
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gst_video_mark_draw_box (videomark, d, pw, ph, row_stride, pixel_stride,
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color);
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}
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pattern_shift = G_GUINT64_CONSTANT (1) << (videomark->pattern_data_count - 1);
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/* get the data of the pattern */
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for (i = 0; i < videomark->pattern_data_count; i++) {
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d = data + offset;
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/* move to start of bottom left, adjust for offsets */
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d += row_stride * (height - ph - videomark->bottom_offset) +
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pixel_stride * videomark->left_offset;
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/* move after the fixed pattern */
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d += pixel_stride * videomark->pattern_count * pw;
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/* move to i-th pattern data */
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d += pixel_stride * pw * i;
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if (videomark->pattern_data & pattern_shift)
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color = 255;
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else
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color = 0;
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gst_video_mark_draw_box (videomark, d, pw, ph, row_stride, pixel_stride,
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color);
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pattern_shift >>= 1;
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}
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_video_mark_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
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{
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GstVideoMark *videomark;
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GstFlowReturn ret = GST_FLOW_OK;
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videomark = GST_VIDEO_MARK (trans);
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if (videomark->enabled)
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return gst_video_mark_yuv (videomark, buf);
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return ret;
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}
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static void
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gst_video_mark_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVideoMark *videomark;
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videomark = GST_VIDEO_MARK (object);
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switch (prop_id) {
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case PROP_PATTERN_WIDTH:
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videomark->pattern_width = g_value_get_int (value);
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break;
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case PROP_PATTERN_HEIGHT:
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videomark->pattern_height = g_value_get_int (value);
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break;
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case PROP_PATTERN_COUNT:
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videomark->pattern_count = g_value_get_int (value);
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break;
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case PROP_PATTERN_DATA_COUNT:
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videomark->pattern_data_count = g_value_get_int (value);
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break;
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case PROP_PATTERN_DATA_64:
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videomark->pattern_data = g_value_get_uint64 (value);
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break;
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case PROP_PATTERN_DATA:
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videomark->pattern_data = g_value_get_int (value);
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break;
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case PROP_ENABLED:
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videomark->enabled = g_value_get_boolean (value);
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break;
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case PROP_LEFT_OFFSET:
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videomark->left_offset = g_value_get_int (value);
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break;
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case PROP_BOTTOM_OFFSET:
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videomark->bottom_offset = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_video_mark_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstVideoMark *videomark;
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videomark = GST_VIDEO_MARK (object);
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switch (prop_id) {
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case PROP_PATTERN_WIDTH:
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g_value_set_int (value, videomark->pattern_width);
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break;
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case PROP_PATTERN_HEIGHT:
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g_value_set_int (value, videomark->pattern_height);
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break;
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case PROP_PATTERN_COUNT:
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g_value_set_int (value, videomark->pattern_count);
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break;
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case PROP_PATTERN_DATA_COUNT:
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g_value_set_int (value, videomark->pattern_data_count);
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break;
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case PROP_PATTERN_DATA_64:
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g_value_set_uint64 (value, videomark->pattern_data);
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break;
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case PROP_PATTERN_DATA:
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g_value_set_int (value, MIN (videomark->pattern_data, G_MAXINT));
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break;
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case PROP_ENABLED:
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g_value_set_boolean (value, videomark->enabled);
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break;
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case PROP_LEFT_OFFSET:
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g_value_set_int (value, videomark->left_offset);
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break;
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case PROP_BOTTOM_OFFSET:
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g_value_set_int (value, videomark->bottom_offset);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_video_mark_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details (element_class, &video_mark_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_video_mark_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_video_mark_src_template));
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}
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static void
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gst_video_mark_class_init (gpointer klass, gpointer class_data)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *trans_class;
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gobject_class = (GObjectClass *) klass;
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trans_class = (GstBaseTransformClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->set_property = gst_video_mark_set_property;
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gobject_class->get_property = gst_video_mark_get_property;
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g_object_class_install_property (gobject_class, PROP_PATTERN_WIDTH,
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g_param_spec_int ("pattern-width", "Pattern width",
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"The width of the pattern markers", 1, G_MAXINT,
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DEFAULT_PATTERN_WIDTH, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_PATTERN_HEIGHT,
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g_param_spec_int ("pattern-height", "Pattern height",
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"The height of the pattern markers", 1, G_MAXINT,
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DEFAULT_PATTERN_HEIGHT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_PATTERN_COUNT,
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g_param_spec_int ("pattern-count", "Pattern count",
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"The number of pattern markers", 0, G_MAXINT,
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DEFAULT_PATTERN_COUNT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_PATTERN_DATA_COUNT,
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g_param_spec_int ("pattern-data-count", "Pattern data count",
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"The number of extra data pattern markers", 0, 64,
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DEFAULT_PATTERN_DATA_COUNT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_PATTERN_DATA_64,
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g_param_spec_uint64 ("pattern-data-uint64", "Pattern data",
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"The extra data pattern markers", 0, G_MAXUINT64,
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DEFAULT_PATTERN_DATA, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_PATTERN_DATA,
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g_param_spec_int ("pattern-data", "Pattern data",
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"The extra data pattern markers", 0, G_MAXINT,
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DEFAULT_PATTERN_DATA, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_ENABLED,
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g_param_spec_boolean ("enabled", "Enabled",
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"Enable or disable the filter",
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DEFAULT_ENABLED, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_LEFT_OFFSET,
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g_param_spec_int ("left-offset", "Left Offset",
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"The offset from the left border where the pattern starts", 0,
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G_MAXINT, DEFAULT_LEFT_OFFSET,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class, PROP_BOTTOM_OFFSET,
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g_param_spec_int ("bottom-offset", "Bottom Offset",
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"The offset from the bottom border where the pattern starts", 0,
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G_MAXINT, DEFAULT_BOTTOM_OFFSET,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_mark_set_caps);
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trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_video_mark_transform_ip);
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GST_DEBUG_CATEGORY_INIT (video_mark_debug, "videomark", 0, "Video mark");
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}
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static void
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gst_video_mark_init (GTypeInstance * instance, gpointer g_class)
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{
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GstVideoMark *videomark;
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videomark = GST_VIDEO_MARK (instance);
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GST_DEBUG_OBJECT (videomark, "gst_video_mark_init");
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}
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GType
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gst_video_mark_get_type (void)
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{
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static GType video_mark_type = 0;
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if (!video_mark_type) {
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static const GTypeInfo video_mark_info = {
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sizeof (GstVideoMarkClass),
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gst_video_mark_base_init,
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NULL,
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gst_video_mark_class_init,
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NULL,
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NULL,
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sizeof (GstVideoMark),
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0,
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gst_video_mark_init,
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};
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video_mark_type = g_type_register_static (GST_TYPE_VIDEO_FILTER,
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"GstVideoMark", &video_mark_info, 0);
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}
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return video_mark_type;
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}
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