2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * <2005> Wim Taymans <wim@fluendo.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
30 static GstElementDetails dvdec_details =
31 GST_ELEMENT_DETAILS ("DV (smpte314) decoder plugin",
32 "Codec/Decoder/Video",
33 "Uses libdv to decode DV video (libdv.sourceforge.net)",
34 "Erik Walthinsen <omega@cse.ogi.edu>," "Wim Taymans <wim@fluendo.com>");
37 #define DV_DEFAULT_QUALITY DV_QUALITY_BEST
38 #define DV_DEFAULT_DECODE_NTH 1
49 const gint qualities[] = {
53 DV_QUALITY_DC | DV_QUALITY_COLOR,
54 DV_QUALITY_AC_1 | DV_QUALITY_COLOR,
55 DV_QUALITY_AC_2 | DV_QUALITY_COLOR
58 static GstStaticPadTemplate sink_temp = GST_STATIC_PAD_TEMPLATE ("sink",
61 GST_STATIC_CAPS ("video/x-dv, systemstream = (boolean) false")
64 static GstStaticPadTemplate src_temp = GST_STATIC_PAD_TEMPLATE ("src",
67 GST_STATIC_CAPS ("video/x-raw-yuv, "
68 "format = (fourcc) YUY2, "
70 "framerate = (double) [ 1.0, 60.0 ];"
74 "endianness = (int) " G_STRINGIFY (G_BIG_ENDIAN) ", "
75 "red_mask = (int) 0x0000ff00, "
76 "green_mask = (int) 0x00ff0000, "
77 "blue_mask = (int) 0xff000000, "
79 "framerate = (double) [ 1.0, 60.0 ];"
83 "endianness = (int) " G_STRINGIFY (G_BIG_ENDIAN) ", "
84 "red_mask = (int) 0x00ff0000, "
85 "green_mask = (int) 0x0000ff00, "
86 "blue_mask = (int) 0x000000ff, "
87 "width = (int) 720, " "framerate = (double) [ 1.0, 60.0 ]")
90 #define GST_TYPE_DVDEC_QUALITY (gst_dvdec_quality_get_type())
92 gst_dvdec_quality_get_type (void)
94 static GType qtype = 0;
97 static const GEnumValue values[] = {
98 {0, "DV_QUALITY_FASTEST", "Fastest decoding, low-quality mono"},
99 {1, "DV_QUALITY_AC_1", "Mono decoding using the first AC coefficient"},
100 {2, "DV_QUALITY_AC_2", "Highest quality mono decoding"},
101 {3, "DV_QUALITY_DC|DV_QUALITY_COLOUR", "Fastest colour decoding"},
102 {4, "DV_QUALITY_AC_1|DV_QUALITY_COLOUR",
103 "Colour, using only the first AC coefficient"},
104 {5, "DV_QUALITY_BEST", "Highest quality colour decoding"},
108 qtype = g_enum_register_static ("GstDVDecQualityEnum", values);
113 GST_BOILERPLATE (GstDVDec, gst_dvdec, GstElement, GST_TYPE_ELEMENT);
115 static gboolean gst_dvdec_sink_setcaps (GstPad * pad, GstCaps * caps);
116 static GstFlowReturn gst_dvdec_chain (GstPad * pad, GstBuffer * buffer);
118 static GstElementStateReturn gst_dvdec_change_state (GstElement * element);
120 static void gst_dvdec_set_property (GObject * object, guint prop_id,
121 const GValue * value, GParamSpec * pspec);
122 static void gst_dvdec_get_property (GObject * object, guint prop_id,
123 GValue * value, GParamSpec * pspec);
126 gst_dvdec_base_init (gpointer g_class)
128 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
130 gst_element_class_add_pad_template (element_class,
131 gst_static_pad_template_get (&sink_temp));
132 gst_element_class_add_pad_template (element_class,
133 gst_static_pad_template_get (&src_temp));
135 gst_element_class_set_details (element_class, &dvdec_details);
139 gst_dvdec_class_init (GstDVDecClass * klass)
141 GObjectClass *gobject_class;
142 GstElementClass *gstelement_class;
144 gobject_class = (GObjectClass *) klass;
145 gstelement_class = (GstElementClass *) klass;
147 gobject_class->set_property = gst_dvdec_set_property;
148 gobject_class->get_property = gst_dvdec_get_property;
150 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CLAMP_LUMA,
151 g_param_spec_boolean ("clamp_luma", "Clamp luma", "Clamp luma",
152 FALSE, G_PARAM_READWRITE));
153 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CLAMP_CHROMA,
154 g_param_spec_boolean ("clamp_chroma", "Clamp chroma", "Clamp chroma",
155 FALSE, G_PARAM_READWRITE));
156 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QUALITY,
157 g_param_spec_enum ("quality", "Quality", "Decoding quality",
158 GST_TYPE_DVDEC_QUALITY, DV_DEFAULT_QUALITY, G_PARAM_READWRITE));
159 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DECODE_NTH,
160 g_param_spec_int ("drop-factor", "Drop Factor", "Only decode Nth frame",
161 1, G_MAXINT, DV_DEFAULT_DECODE_NTH, G_PARAM_READWRITE));
163 gstelement_class->change_state = gst_dvdec_change_state;
165 /* table initialization, only do once */
170 gst_dvdec_init (GstDVDec * dvdec)
173 gst_pad_new_from_template (gst_static_pad_template_get (&sink_temp),
175 gst_pad_set_setcaps_function (dvdec->sinkpad,
176 GST_DEBUG_FUNCPTR (gst_dvdec_sink_setcaps));
177 gst_pad_set_chain_function (dvdec->sinkpad, gst_dvdec_chain);
178 gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->sinkpad);
181 gst_pad_new_from_template (gst_static_pad_template_get (&src_temp),
184 gst_pad_use_fixed_caps (dvdec->srcpad);
186 gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->srcpad);
188 dvdec->framerate = 0;
191 dvdec->drop_factor = 1;
192 dvdec->headers_seen = FALSE;
194 dvdec->clamp_luma = FALSE;
195 dvdec->clamp_chroma = FALSE;
196 dvdec->quality = DV_DEFAULT_QUALITY;
200 gst_dvdec_sink_setcaps (GstPad * pad, GstCaps * caps)
207 dvdec = GST_DVDEC (gst_pad_get_parent (pad));
209 /* first parse the caps */
210 s = gst_caps_get_structure (caps, 0);
212 if (!gst_structure_get_int (s, "height", &dvdec->height))
214 if (!(v = gst_structure_get_value (s, "pixel-aspect-ratio")))
216 if (!gst_structure_get_double (s, "framerate", &dvdec->framerate))
219 /* ignoring rgb, bgr0 for now */
223 othercaps = gst_caps_new_simple ("video/x-raw-yuv",
224 "format", GST_TYPE_FOURCC, GST_STR_FOURCC ("YUY2"),
225 "width", G_TYPE_INT, 720,
226 "height", G_TYPE_INT, dvdec->height,
227 "framerate", G_TYPE_DOUBLE, dvdec->framerate, NULL);
228 gst_structure_set_value (gst_caps_get_structure (othercaps, 0),
229 "pixel-aspect-ratio", v);
231 gst_pad_set_caps (dvdec->srcpad, othercaps);
233 gst_caps_unref (othercaps);
235 gst_object_unref (dvdec);
241 gst_object_unref (dvdec);
248 gst_dvdec_chain (GstPad * pad, GstBuffer * buf)
253 guint8 *outframe_ptrs[3];
254 gint outframe_pitches[3];
256 GstFlowReturn ret = GST_FLOW_OK;
258 dvdec = GST_DVDEC (gst_pad_get_parent (pad));
259 inframe = GST_BUFFER_DATA (buf);
261 if (dv_parse_header (dvdec->decoder, inframe) < 0)
262 g_assert_not_reached ();
263 dv_parse_packs (dvdec->decoder, inframe);
265 if (dvdec->video_offset % dvdec->drop_factor != 0)
269 gst_pad_alloc_buffer (dvdec->srcpad, 0,
270 (720 * dvdec->height) * dvdec->bpp,
271 GST_PAD_CAPS (dvdec->srcpad), &outbuf);
272 if (ret != GST_FLOW_OK)
275 outframe = GST_BUFFER_DATA (outbuf);
277 outframe_ptrs[0] = outframe;
278 outframe_pitches[0] = 720 * dvdec->bpp;
280 /* the rest only matters for YUY2 */
281 if (dvdec->bpp < 3) {
282 outframe_ptrs[1] = outframe_ptrs[0] + 720 * dvdec->height;
283 outframe_ptrs[2] = outframe_ptrs[1] + 360 * dvdec->height;
285 outframe_pitches[1] = dvdec->height / 2;
286 outframe_pitches[2] = outframe_pitches[1];
289 dv_decode_full_frame (dvdec->decoder, inframe,
290 e_dv_color_yuv, outframe_ptrs, outframe_pitches);
292 gst_buffer_stamp (outbuf, buf);
294 ret = gst_pad_push (dvdec->srcpad, outbuf);
297 gst_buffer_unref (buf);
298 dvdec->video_offset++;
299 gst_object_unref (dvdec);
306 gst_buffer_unref (buf);
307 gst_object_unref (dvdec);
312 static GstElementStateReturn
313 gst_dvdec_change_state (GstElement * element)
315 GstDVDec *dvdec = GST_DVDEC (element);
316 GstElementStateReturn ret;
319 transition = GST_STATE_TRANSITION (element);
321 switch (transition) {
322 case GST_STATE_NULL_TO_READY:
324 case GST_STATE_READY_TO_PAUSED:
326 dv_decoder_new (0, dvdec->clamp_luma, dvdec->clamp_chroma);
327 dvdec->decoder->quality = qualities[dvdec->quality];
329 * Enable this function call when libdv2 0.100 or higher is more
332 /* dv_set_quality (dvdec->decoder, qualities [dvdec->quality]); */
334 case GST_STATE_PAUSED_TO_PLAYING:
340 ret = parent_class->change_state (element);
342 switch (transition) {
343 case GST_STATE_PLAYING_TO_PAUSED:
345 case GST_STATE_PAUSED_TO_READY:
346 dv_decoder_free (dvdec->decoder);
347 dvdec->decoder = NULL;
348 dvdec->headers_seen = FALSE;
350 case GST_STATE_READY_TO_NULL:
359 gst_dvdec_set_property (GObject * object, guint prop_id, const GValue * value,
362 GstDVDec *dvdec = GST_DVDEC (object);
365 case PROP_CLAMP_LUMA:
366 dvdec->clamp_luma = g_value_get_boolean (value);
368 case PROP_CLAMP_CHROMA:
369 dvdec->clamp_chroma = g_value_get_boolean (value);
372 dvdec->quality = g_value_get_enum (value);
373 if ((dvdec->quality < 0) || (dvdec->quality > 5))
376 case PROP_DECODE_NTH:
377 dvdec->drop_factor = g_value_get_int (value);
380 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
386 gst_dvdec_get_property (GObject * object, guint prop_id, GValue * value,
389 GstDVDec *dvdec = GST_DVDEC (object);
392 case PROP_CLAMP_LUMA:
393 g_value_set_boolean (value, dvdec->clamp_luma);
395 case PROP_CLAMP_CHROMA:
396 g_value_set_boolean (value, dvdec->clamp_chroma);
399 g_value_set_enum (value, dvdec->quality);
401 case PROP_DECODE_NTH:
402 g_value_set_int (value, dvdec->drop_factor);
405 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);