2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is distributed in the hope that it will be useful,
5 * but WITHOUT ANY WARRANTY; without even the implied warranty of
6 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
7 * Library General Public License for more details.
9 * You should have received a copy of the GNU Library General Public
10 * License along with this library; if not, write to the
11 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
12 * Boston, MA 02111-1307, USA.
21 #include "gstmngdec.h"
22 #include <gst/video/video.h>
24 static GstElementDetails gst_mngdec_details = {
26 "Codec/Decoder/Image",
27 "Decode a mng video to raw images",
28 "Wim Taymans <wim@fluendo.com>",
32 /* Filter signals and args */
44 static void gst_mngdec_base_init (gpointer g_class);
45 static void gst_mngdec_class_init (GstMngDecClass * klass);
46 static void gst_mngdec_init (GstMngDec * mngdec);
48 static void gst_mngdec_get_property (GObject * object,
49 guint prop_id, GValue * value, GParamSpec * pspec);
50 static void gst_mngdec_set_property (GObject * object,
51 guint prop_id, const GValue * value, GParamSpec * pspec);
53 static GstStateChangeReturn gst_mngdec_change_state (GstElement * element,
54 GstStateChange transition);
56 static void gst_mngdec_loop (GstElement * element);
58 static GstCaps *gst_mngdec_src_getcaps (GstPad * pad);
60 static GstElementClass *parent_class = NULL;
64 gst_mngdec_get_type (void)
66 static GType mngdec_type = 0;
69 static const GTypeInfo mngdec_info = {
70 sizeof (GstMngDecClass),
73 (GClassInitFunc) gst_mngdec_class_init,
78 (GInstanceInitFunc) gst_mngdec_init,
81 mngdec_type = g_type_register_static (GST_TYPE_ELEMENT, "GstMngDec",
87 static GstStaticPadTemplate gst_mngdec_src_pad_template =
88 GST_STATIC_PAD_TEMPLATE ("src",
91 GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_RGB)
94 static GstStaticPadTemplate gst_mngdec_sink_pad_template =
95 GST_STATIC_PAD_TEMPLATE ("sink",
98 GST_STATIC_CAPS ("video/x-mng, "
99 "width = (int) [ 16, 4096 ], "
100 "height = (int) [ 16, 4096 ], " "framerate = (double) [ 0.0, MAX ]")
104 gst_mngdec_base_init (gpointer g_class)
106 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
108 gst_element_class_add_pad_template (element_class,
109 gst_static_pad_template_get (&gst_mngdec_src_pad_template));
110 gst_element_class_add_pad_template (element_class,
111 gst_static_pad_template_get (&gst_mngdec_sink_pad_template));
112 gst_element_class_set_details (element_class, &gst_mngdec_details);
116 gst_mngdec_class_init (GstMngDecClass * klass)
118 GObjectClass *gobject_class;
119 GstElementClass *gstelement_class;
121 gobject_class = (GObjectClass *) klass;
122 gstelement_class = (GstElementClass *) klass;
124 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
126 gstelement_class->change_state = gst_mngdec_change_state;
128 gstelement_class->get_property = gst_mngdec_get_property;
129 gstelement_class->set_property = gst_mngdec_set_property;
134 static GstPadLinkReturn
135 gst_mngdec_sinklink (GstPad * pad, const GstCaps * caps)
138 GstStructure *structure;
140 mngdec = GST_MNGDEC (gst_pad_get_parent (pad));
142 structure = gst_caps_get_structure (caps, 0);
143 gst_structure_get_double (structure, "framerate", &mngdec->fps);
144 gst_object_unref (mngdec);
150 gst_mngdec_init (GstMngDec * mngdec)
152 mngdec->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get
153 (&gst_mngdec_sink_pad_template), "sink");
154 gst_element_add_pad (GST_ELEMENT (mngdec), mngdec->sinkpad);
156 mngdec->srcpad = gst_pad_new_from_template (gst_static_pad_template_get
157 (&gst_mngdec_src_pad_template), "src");
158 gst_element_add_pad (GST_ELEMENT (mngdec), mngdec->srcpad);
160 gst_pad_set_link_function (mngdec->sinkpad, gst_mngdec_sinklink);
162 gst_pad_set_getcaps_function (mngdec->srcpad, gst_mngdec_src_getcaps);
165 mngdec->buffer_out = NULL;
167 mngdec->color_type = -1;
172 gst_element_set_loop_function (GST_ELEMENT (mngdec), gst_mngdec_loop);
176 gst_mngdec_src_getcaps (GstPad * pad)
181 GstPadTemplate *templ;
184 mngdec = GST_MNGDEC (gst_pad_get_parent (pad));
185 templ = gst_static_pad_template_get (&gst_mngdec_src_pad_template);
186 caps = gst_caps_copy (gst_pad_template_get_caps (templ));
188 if (mngdec->color_type != -1) {
189 GstCaps *to_inter = NULL;
191 switch (mngdec->color_type) {
192 case MNG_COLORTYPE_RGB:
193 to_inter = gst_caps_new_simple ("video/x-raw-rgb",
194 "bpp", G_TYPE_INT, 24, NULL);
196 case MNG_COLORTYPE_RGBA:
197 to_inter = gst_caps_new_simple ("video/x-raw-rgb",
198 "bpp", G_TYPE_INT, 32, NULL);
200 case MNG_COLORTYPE_GRAY:
201 case MNG_COLORTYPE_INDEXED:
202 case MNG_COLORTYPE_GRAYA:
204 GST_ELEMENT_ERROR (mngdec, STREAM, NOT_IMPLEMENTED, (NULL),
205 ("mngdec does not support grayscale or paletted data yet"));
208 inter = gst_caps_intersect (caps, to_inter);
209 gst_caps_free (caps);
210 gst_caps_free (to_inter);
214 for (i = 0; i < gst_caps_get_size (caps); i++) {
215 GstStructure *structure = gst_caps_get_structure (caps, i);
217 if (mngdec->width != -1) {
218 gst_structure_set (structure, "width", G_TYPE_INT, mngdec->width, NULL);
221 if (mngdec->height != -1) {
222 gst_structure_set (structure, "height", G_TYPE_INT, mngdec->height, NULL);
225 if (mngdec->fps != -1) {
226 gst_structure_set (structure,
227 "framerate", G_TYPE_DOUBLE, mngdec->fps, NULL);
231 gst_object_unref (mngdec);
238 gst_mngdec_loop (GstElement * element)
243 mngdec = GST_MNGDEC (element);
246 GST_DEBUG ("display");
247 ret = mng_readdisplay (mngdec->mng);
248 mngdec->first = FALSE;
250 GST_DEBUG ("resume");
251 ret = mng_display_resume (mngdec->mng);
253 if (ret == MNG_NEEDTIMERWAIT) {
254 /* libmng needs more data later on */
256 /* assume EOS here */
257 gst_pad_push (mngdec->srcpad, GST_DATA (gst_event_new (GST_EVENT_EOS)));
258 gst_element_set_eos (element);
263 gst_mngdec_get_property (GObject * object,
264 guint prop_id, GValue * value, GParamSpec * pspec)
268 mngdec = GST_MNGDEC (object);
272 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
279 gst_mngdec_set_property (GObject * object,
280 guint prop_id, const GValue * value, GParamSpec * pspec)
284 mngdec = GST_MNGDEC (object);
288 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
294 mngdec_error (mng_handle mng, mng_int32 code, mng_int8 severity,
295 mng_chunkid chunktype, mng_uint32 chunkseq,
296 mng_int32 extra1, mng_int32 extra2, mng_pchar text)
300 mngdec = GST_MNGDEC (mng_get_userdata (mng));
302 GST_ERROR_OBJECT (mngdec, "error in chunk %4.4s (%d): %s",
303 (gchar *) & chunktype, chunkseq, text);
309 mngdec_openstream (mng_handle mng)
313 mngdec = GST_MNGDEC (mng_get_userdata (mng));
315 mngdec->bs = gst_bytestream_new (mngdec->sinkpad);
321 mngdec_closestream (mng_handle mng)
325 mngdec = GST_MNGDEC (mng_get_userdata (mng));
327 gst_bytestream_destroy (mngdec->bs);
333 mngdec_handle_sink_event (GstMngDec * mngdec)
339 gst_bytestream_get_status (mngdec->bs, &remaining, &event);
341 type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
342 GST_DEBUG ("mngdec: event %p %d", event, type);
346 gst_bytestream_flush (mngdec->bs, remaining);
347 gst_pad_event_default (mngdec->sinkpad, event);
349 case GST_EVENT_FLUSH:
351 case GST_EVENT_DISCONTINUOUS:
352 GST_DEBUG ("discontinuous event");
355 g_warning ("unhandled event %d", type);
359 gst_event_unref (event);
364 mngdec_readdata (mng_handle mng, mng_ptr buffer,
365 mng_uint32 size, mng_uint32 * bytesread)
371 mngdec = GST_MNGDEC (mng_get_userdata (mng));
373 GST_DEBUG ("read data %d", size);
376 read = gst_bytestream_peek_bytes (mngdec->bs, &bytes, size);
378 if (!mngdec_handle_sink_event (mngdec)) {
388 memcpy (buffer, bytes, size);
389 gst_bytestream_flush_fast (mngdec->bs, read);
396 mngdec_gettickcount (mng_handle mng)
401 g_get_current_time (&time);
403 val = time.tv_sec * 1000 + time.tv_usec;
404 GST_DEBUG ("get tick count %d", val);
410 mngdec_settimer (mng_handle mng, mng_uint32 msecs)
414 mngdec = GST_MNGDEC (mng_get_userdata (mng));
415 //mymng->delay = msecs;
416 GST_DEBUG ("set timer %d", msecs);
422 mngdec_processheader (mng_handle mng, mng_uint32 width, mng_uint32 height)
429 mngdec = GST_MNGDEC (mng_get_userdata (mng));
431 GST_DEBUG ("process header %d %d", width, height);
433 playtime = mng_get_playtime (mng);
434 framecount = mng_get_framecount (mng);
435 ticks = mng_get_ticks (mng);
440 mngdec->fps = ((gfloat) ticks) / playtime;
443 if (mngdec->width != width || mngdec->height != height) {
444 mngdec->width = width;
445 mngdec->stride = ((width + 3) & ~3) * 4;
446 mngdec->height = height;
448 if (GST_PAD_LINK_FAILED (gst_pad_renegotiate (mngdec->srcpad))) {
449 GST_ELEMENT_ERROR (mngdec, CORE, NEGOTIATION, (NULL), (NULL));
454 gst_buffer_new_and_alloc (mngdec->height * mngdec->stride);
460 mngdec_getcanvasline (mng_handle mng, mng_uint32 line)
464 mngdec = GST_MNGDEC (mng_get_userdata (mng));
466 GST_DEBUG ("get canvas line %d", line);
468 return (mng_ptr) (GST_BUFFER_DATA (mngdec->buffer_out) +
469 (line * mngdec->stride));
473 mngdec_refresh (mng_handle mng, mng_uint32 x, mng_uint32 y,
474 mng_uint32 w, mng_uint32 h)
479 mngdec = GST_MNGDEC (mng_get_userdata (mng));
481 current = mng_get_currentplaytime (mng);
483 GST_DEBUG ("refresh %d %d %d %d", x, y, w, h);
484 if (h == mngdec->height) {
485 GstBuffer *out = gst_buffer_copy (mngdec->buffer_out);
487 gst_pad_push (mngdec->srcpad, GST_DATA (out));
493 static GstStateChangeReturn
494 gst_mngdec_change_state (GstElement * element, GstStateChange transition)
496 GstMngDec *mngdec = GST_MNGDEC (element);
498 switch (transition) {
499 case GST_STATE_CHANGE_NULL_TO_READY:
500 /* init library, make sure to pass an alloc function that sets the
503 mng_initialize (mngdec, (mng_memalloc) g_malloc0,
504 (mng_memfree) g_free, MNG_NULL);
505 if (mngdec->mng == MNG_NULL) {
506 return GST_STATE_CHANGE_FAILURE;
508 /* set the callbacks */
509 mng_setcb_errorproc (mngdec->mng, mngdec_error);
510 mng_setcb_openstream (mngdec->mng, mngdec_openstream);
511 mng_setcb_closestream (mngdec->mng, mngdec_closestream);
512 mng_setcb_readdata (mngdec->mng, mngdec_readdata);
513 mng_setcb_gettickcount (mngdec->mng, mngdec_gettickcount);
514 mng_setcb_settimer (mngdec->mng, mngdec_settimer);
515 mng_setcb_processheader (mngdec->mng, mngdec_processheader);
516 mng_setcb_getcanvasline (mngdec->mng, mngdec_getcanvasline);
517 mng_setcb_refresh (mngdec->mng, mngdec_refresh);
518 mng_set_canvasstyle (mngdec->mng, MNG_CANVAS_RGBA8);
519 mng_set_doprogressive (mngdec->mng, MNG_FALSE);
521 case GST_STATE_CHANGE_READY_TO_PAUSED:
522 mngdec->first = TRUE;
524 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
526 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
528 case GST_STATE_CHANGE_PAUSED_TO_READY:
530 case GST_STATE_CHANGE_READY_TO_NULL:
531 mng_cleanup (&mngdec->mng);
537 if (GST_ELEMENT_CLASS (parent_class)->change_state)
538 return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
540 return GST_STATE_CHANGE_SUCCESS;