2 * Copyright (C) 2006 David A. Schleef <ds@schleef.org>
3 * Copyright (C) 2007,2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 * SECTION:element-videoparse
25 * Converts a byte stream into video frames.
32 #include "gstvideoparse.h"
34 static void gst_video_parse_set_property (GObject * object, guint prop_id,
35 const GValue * value, GParamSpec * pspec);
36 static void gst_video_parse_get_property (GObject * object, guint prop_id,
37 GValue * value, GParamSpec * pspec);
39 static GstCaps *gst_video_parse_get_caps (GstRawParse * rp);
40 static void gst_video_parse_set_buffer_flags (GstRawParse * rp,
43 static void gst_video_parse_update_frame_size (GstVideoParse * vp);
45 GST_DEBUG_CATEGORY_STATIC (gst_video_parse_debug);
46 #define GST_CAT_DEFAULT gst_video_parse_debug
60 GST_BOILERPLATE (GstVideoParse, gst_video_parse, GstRawParse,
64 gst_video_parse_base_init (gpointer g_class)
66 GstRawParseClass *rp_class = GST_RAW_PARSE_CLASS (g_class);
67 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
70 GST_DEBUG_CATEGORY_INIT (gst_video_parse_debug, "videoparse", 0,
71 "videoparse element");
73 gst_element_class_set_details_simple (gstelement_class, "Video Parse",
75 "Converts stream into video frames",
76 "David Schleef <ds@schleef.org>, "
77 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
81 ("video/x-raw-rgb; video/x-raw-yuv; video/x-raw-gray; video/x-raw-bayer");
83 gst_raw_parse_class_set_src_pad_template (rp_class, caps);
84 gst_raw_parse_class_set_multiple_frames_per_buffer (rp_class, FALSE);
85 gst_caps_unref (caps);
89 gst_video_parse_class_init (GstVideoParseClass * klass)
91 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
92 GstRawParseClass *rp_class = GST_RAW_PARSE_CLASS (klass);
94 gobject_class->set_property = gst_video_parse_set_property;
95 gobject_class->get_property = gst_video_parse_get_property;
97 rp_class->get_caps = gst_video_parse_get_caps;
98 rp_class->set_buffer_flags = gst_video_parse_set_buffer_flags;
100 g_object_class_install_property (gobject_class, PROP_FORMAT,
101 g_param_spec_enum ("format", "Format", "Format of images in raw stream",
102 GST_TYPE_VIDEO_FORMAT, GST_VIDEO_FORMAT_I420,
103 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
104 g_object_class_install_property (gobject_class, PROP_WIDTH,
105 g_param_spec_int ("width", "Width", "Width of images in raw stream",
106 0, INT_MAX, 320, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
107 g_object_class_install_property (gobject_class, PROP_HEIGHT,
108 g_param_spec_int ("height", "Height", "Height of images in raw stream",
109 0, INT_MAX, 240, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
110 g_object_class_install_property (gobject_class, PROP_FRAMERATE,
111 gst_param_spec_fraction ("framerate", "Frame Rate",
112 "Frame rate of images in raw stream", 0, 1, 100, 1, 25, 1,
113 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
114 g_object_class_install_property (gobject_class, PROP_PAR,
115 gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
116 "Pixel aspect ratio of images in raw stream", 1, 100, 100, 1, 1, 1,
117 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
118 g_object_class_install_property (gobject_class, PROP_INTERLACED,
119 g_param_spec_boolean ("interlaced", "Interlaced flag",
120 "True if video is interlaced", FALSE,
121 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
122 g_object_class_install_property (gobject_class, PROP_TOP_FIELD_FIRST,
123 g_param_spec_boolean ("top-field-first", "Top field first",
124 "True if top field is earlier than bottom field", TRUE,
125 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
129 gst_video_parse_init (GstVideoParse * vp, GstVideoParseClass * g_class)
133 vp->format = GST_VIDEO_FORMAT_I420;
137 gst_video_parse_update_frame_size (vp);
138 gst_raw_parse_set_fps (GST_RAW_PARSE (vp), 25, 1);
142 gst_video_parse_set_property (GObject * object, guint prop_id,
143 const GValue * value, GParamSpec * pspec)
145 GstVideoParse *vp = GST_VIDEO_PARSE (object);
147 g_return_if_fail (!gst_raw_parse_is_negotiated (GST_RAW_PARSE (vp)));
151 vp->format = g_value_get_enum (value);
154 vp->width = g_value_get_int (value);
157 vp->height = g_value_get_int (value);
160 gst_raw_parse_set_fps (GST_RAW_PARSE (vp),
161 gst_value_get_fraction_numerator (value),
162 gst_value_get_fraction_denominator (value));
165 vp->par_n = gst_value_get_fraction_numerator (value);
166 vp->par_d = gst_value_get_fraction_denominator (value);
168 case PROP_INTERLACED:
169 vp->interlaced = g_value_get_boolean (value);
171 case PROP_TOP_FIELD_FIRST:
172 vp->top_field_first = g_value_get_boolean (value);
175 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
179 gst_video_parse_update_frame_size (vp);
183 gst_video_parse_get_property (GObject * object, guint prop_id, GValue * value,
186 GstVideoParse *vp = GST_VIDEO_PARSE (object);
190 g_value_set_enum (value, vp->format);
193 g_value_set_int (value, vp->width);
196 g_value_set_int (value, vp->height);
198 case PROP_FRAMERATE:{
201 gst_raw_parse_get_fps (GST_RAW_PARSE (vp), &fps_n, &fps_d);
202 gst_value_set_fraction (value, fps_n, fps_d);
206 gst_value_set_fraction (value, vp->par_n, vp->par_d);
208 case PROP_INTERLACED:
209 g_value_set_boolean (value, vp->interlaced);
211 case PROP_TOP_FIELD_FIRST:
212 g_value_set_boolean (value, vp->top_field_first);
215 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
221 gst_video_parse_update_frame_size (GstVideoParse * vp)
225 framesize = gst_video_format_get_size (vp->format, vp->width, vp->height);
227 gst_raw_parse_set_framesize (GST_RAW_PARSE (vp), framesize);
231 gst_video_parse_get_caps (GstRawParse * rp)
233 GstVideoParse *vp = GST_VIDEO_PARSE (rp);
238 gst_raw_parse_get_fps (rp, &fps_n, &fps_d);
241 gst_video_format_new_caps_interlaced (vp->format, vp->width, vp->height,
242 fps_n, fps_d, vp->par_n, vp->par_d, vp->interlaced);
248 gst_video_parse_set_buffer_flags (GstRawParse * rp, GstBuffer * buffer)
250 GstVideoParse *vp = GST_VIDEO_PARSE (rp);
252 if (vp->interlaced) {
253 if (vp->top_field_first) {
254 GST_BUFFER_FLAG_SET (buffer, GST_VIDEO_BUFFER_TFF);
256 GST_BUFFER_FLAG_UNSET (buffer, GST_VIDEO_BUFFER_TFF);