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 /* Filter signals and args */
36 static GstStaticPadTemplate gst_mng_dec_src_pad_template =
37 GST_STATIC_PAD_TEMPLATE ("src",
40 GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_RGB)
43 static GstStaticPadTemplate gst_mng_dec_sink_pad_template =
44 GST_STATIC_PAD_TEMPLATE ("sink",
47 GST_STATIC_CAPS ("video/x-mng, "
48 "width = (int) [ 16, 4096 ], "
49 "height = (int) [ 16, 4096 ], " "framerate = (double) [ 0.0, MAX ]")
52 static void gst_mng_dec_get_property (GObject * object,
53 guint prop_id, GValue * value, GParamSpec * pspec);
54 static void gst_mng_dec_set_property (GObject * object,
55 guint prop_id, const GValue * value, GParamSpec * pspec);
57 static GstStateChangeReturn gst_mng_dec_change_state (GstElement * element,
58 GstStateChange transition);
60 static gboolean gst_mng_dec_sink_event (GstPad * pad, GstEvent * event);
62 GST_BOILERPLATE (GstMngDec, gst_mng_dec, GstElement, GST_TYPE_ELEMENT);
65 gst_mng_dec_base_init (gpointer g_class)
67 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
69 gst_element_class_add_pad_template (element_class,
70 gst_static_pad_template_get (&gst_mng_dec_src_pad_template));
71 gst_element_class_add_pad_template (element_class,
72 gst_static_pad_template_get (&gst_mng_dec_sink_pad_template));
73 gst_element_class_set_static_metadata (element_class, "MNG video decoder",
74 "Codec/Decoder/Video",
75 "Decode a mng video to raw images", "Wim Taymans <wim@fluendo.com>");
79 gst_mng_dec_class_init (GstMngDecClass * klass)
81 GObjectClass *gobject_class;
82 GstElementClass *gstelement_class;
84 gobject_class = (GObjectClass *) klass;
85 gstelement_class = (GstElementClass *) klass;
87 gobject_class->get_property = gst_mng_dec_get_property;
88 gobject_class->set_property = gst_mng_dec_set_property;
90 gstelement_class->change_state = gst_mng_dec_change_state;
94 gst_mng_dec_sink_setcaps (GstPad * pad, GstCaps * caps)
97 GstStructure *structure;
99 mngdec = GST_MNG_DEC (gst_pad_get_parent (pad));
101 structure = gst_caps_get_structure (caps, 0);
102 gst_structure_get_double (structure, "framerate", &mngdec->fps);
104 gst_object_unref (mngdec);
110 gst_mng_dec_init (GstMngDec * mngdec, GstMngDecClass * gclass)
113 gst_pad_new_from_static_template (&gst_mng_dec_sink_pad_template, "sink");
114 gst_element_add_pad (GST_ELEMENT (mngdec), mngdec->sinkpad);
117 gst_pad_new_from_static_template (&gst_mng_dec_src_pad_template, "src");
118 gst_element_add_pad (GST_ELEMENT (mngdec), mngdec->srcpad);
120 gst_pad_set_setcaps_function (mngdec->sinkpad, gst_mng_dec_sink_setcaps);
121 gst_pad_set_event_function (mngdec->sinkpad, gst_mng_dec_sink_event);
122 //gst_pad_set_getcaps_function (mngdec->srcpad, gst_mng_dec_src_getcaps);
125 mngdec->buffer_out = NULL;
127 mngdec->color_type = -1;
135 gst_mng_dec_src_getcaps (GstPad * pad)
140 GstPadTemplate *templ;
143 mngdec = GST_MNG_DEC (gst_pad_get_parent (pad));
144 templ = gst_static_pad_template_get (&gst_mng_dec_src_pad_template);
145 caps = gst_caps_copy (gst_pad_template_get_caps (templ));
147 if (mngdec->color_type != -1) {
148 GstCaps *to_inter = NULL;
150 switch (mngdec->color_type) {
151 case MNG_COLORTYPE_RGB:
152 to_inter = gst_caps_new_simple ("video/x-raw-rgb",
153 "bpp", G_TYPE_INT, 24, NULL);
155 case MNG_COLORTYPE_RGBA:
156 to_inter = gst_caps_new_simple ("video/x-raw-rgb",
157 "bpp", G_TYPE_INT, 32, NULL);
159 case MNG_COLORTYPE_GRAY:
160 case MNG_COLORTYPE_INDEXED:
161 case MNG_COLORTYPE_GRAYA:
163 GST_ELEMENT_ERROR (mngdec, STREAM, NOT_IMPLEMENTED, (NULL),
164 ("mngdec does not support grayscale or paletted data yet"));
167 inter = gst_caps_intersect (caps, to_inter);
168 gst_caps_free (caps);
169 gst_caps_free (to_inter);
173 for (i = 0; i < gst_caps_get_size (caps); i++) {
174 GstStructure *structure = gst_caps_get_structure (caps, i);
176 if (mngdec->width != -1) {
177 gst_structure_set (structure, "width", G_TYPE_INT, mngdec->width, NULL);
180 if (mngdec->height != -1) {
181 gst_structure_set (structure, "height", G_TYPE_INT, mngdec->height, NULL);
184 if (mngdec->fps != -1) {
185 gst_structure_set (structure,
186 "framerate", G_TYPE_DOUBLE, mngdec->fps, NULL);
190 gst_object_unref (mngdec);
191 gst_object_unref (templ);
199 gst_mng_dec_loop (GstElement * element)
204 mngdec = GST_MNG_DEC (element);
207 GST_DEBUG ("display");
208 ret = mng_readdisplay (mngdec->mng);
209 mngdec->first = FALSE;
211 GST_DEBUG ("resume");
212 ret = mng_display_resume (mngdec->mng);
214 if (ret == MNG_NEEDTIMERWAIT) {
215 /* libmng needs more data later on */
217 /* assume EOS here */
218 gst_pad_push_event (mngdec->srcpad, (gst_event_new_eos ()));
224 gst_mng_dec_get_property (GObject * object,
225 guint prop_id, GValue * value, GParamSpec * pspec)
229 mngdec = GST_MNG_DEC (object);
233 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
240 gst_mng_dec_set_property (GObject * object,
241 guint prop_id, const GValue * value, GParamSpec * pspec)
245 mngdec = GST_MNG_DEC (object);
249 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
255 mngdec_error (mng_handle mng, mng_int32 code, mng_int8 severity,
256 mng_chunkid chunktype, mng_uint32 chunkseq,
257 mng_int32 extra1, mng_int32 extra2, mng_pchar text)
261 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
263 GST_ERROR_OBJECT (mngdec, "error in chunk %4.4s (%d): %s",
264 (gchar *) & chunktype, chunkseq, text);
270 mngdec_openstream (mng_handle mng)
274 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
280 mngdec_closestream (mng_handle mng)
284 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
290 gst_mng_dec_sink_event (GstPad * pad, GstEvent * event)
295 mngdec = GST_MNG_DEC_CAST (gst_pad_get_parent (pad));
297 type = GST_EVENT_TYPE (event);
299 GST_DEBUG_OBJECT (mngdec, "mngdec: event %p %d", event, type);
304 case GST_EVENT_FLUSH_START:
306 case GST_EVENT_FLUSH_STOP:
308 case GST_EVENT_NEWSEGMENT:
313 gst_event_unref (event);
319 mngdec_readdata (mng_handle mng, mng_ptr buffer,
320 mng_uint32 size, mng_uint32 * bytesread)
328 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
330 GST_DEBUG ("read data %d", size);
334 read = gst_bytestream_peek_bytes (mngdec->bs, &bytes, size);
336 if (!mngdec_handle_sink_event (mngdec)) {
346 memcpy (buffer, bytes, size);
347 gst_bytestream_flush_fast (mngdec->bs, read);
355 mngdec_gettickcount (mng_handle mng)
360 g_get_current_time (&time);
362 val = time.tv_sec * 1000 + time.tv_usec;
363 GST_DEBUG ("get tick count %d", val);
369 mngdec_settimer (mng_handle mng, mng_uint32 msecs)
373 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
374 //mymng->delay = msecs;
375 GST_DEBUG ("set timer %d", msecs);
381 mngdec_processheader (mng_handle mng, mng_uint32 width, mng_uint32 height)
388 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
390 GST_DEBUG ("process header %d %d", width, height);
392 playtime = mng_get_playtime (mng);
393 framecount = mng_get_framecount (mng);
394 ticks = mng_get_ticks (mng);
399 mngdec->fps = ((gfloat) ticks) / playtime;
402 if (mngdec->width != width || mngdec->height != height) {
403 mngdec->width = width;
404 mngdec->stride = ((width + 3) & ~3) * 4;
405 mngdec->height = height;
408 if (GST_PAD_LINK_FAILED (gst_pad_renegotiate (mngdec->srcpad))) {
409 GST_ELEMENT_ERROR (mngdec, CORE, NEGOTIATION, (NULL), (NULL));
415 gst_buffer_new_and_alloc (mngdec->height * mngdec->stride);
421 mngdec_getcanvasline (mng_handle mng, mng_uint32 line)
425 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
427 GST_DEBUG ("get canvas line %d", line);
429 return (mng_ptr) (GST_BUFFER_DATA (mngdec->buffer_out) +
430 (line * mngdec->stride));
434 mngdec_refresh (mng_handle mng, mng_uint32 x, mng_uint32 y,
435 mng_uint32 w, mng_uint32 h)
440 mngdec = GST_MNG_DEC (mng_get_userdata (mng));
442 current = mng_get_currentplaytime (mng);
444 GST_DEBUG ("refresh %d %d %d %d", x, y, w, h);
445 if (h == mngdec->height) {
446 GstBuffer *out = gst_buffer_copy (mngdec->buffer_out);
448 gst_pad_push (mngdec->srcpad, out);
454 static GstStateChangeReturn
455 gst_mng_dec_change_state (GstElement * element, GstStateChange transition)
457 GstStateChangeReturn ret;
458 GstMngDec *mngdec = GST_MNG_DEC (element);
460 switch (transition) {
461 case GST_STATE_CHANGE_NULL_TO_READY:
462 /* init library, make sure to pass an alloc function that sets the
465 mng_initialize (mngdec, (mng_memalloc) g_malloc0,
466 (mng_memfree) g_free, MNG_NULL);
467 if (mngdec->mng == MNG_NULL) {
468 return GST_STATE_CHANGE_FAILURE;
470 /* set the callbacks */
471 mng_setcb_errorproc (mngdec->mng, mngdec_error);
472 mng_setcb_openstream (mngdec->mng, mngdec_openstream);
473 mng_setcb_closestream (mngdec->mng, mngdec_closestream);
474 mng_setcb_readdata (mngdec->mng, mngdec_readdata);
475 mng_setcb_gettickcount (mngdec->mng, mngdec_gettickcount);
476 mng_setcb_settimer (mngdec->mng, mngdec_settimer);
477 mng_setcb_processheader (mngdec->mng, mngdec_processheader);
478 mng_setcb_getcanvasline (mngdec->mng, mngdec_getcanvasline);
479 mng_setcb_refresh (mngdec->mng, mngdec_refresh);
480 mng_set_canvasstyle (mngdec->mng, MNG_CANVAS_RGBA8);
481 mng_set_doprogressive (mngdec->mng, MNG_FALSE);
483 case GST_STATE_CHANGE_READY_TO_PAUSED:
484 mngdec->first = TRUE;
486 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
492 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
494 switch (transition) {
495 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
497 case GST_STATE_CHANGE_PAUSED_TO_READY:
499 case GST_STATE_CHANGE_READY_TO_NULL:
500 mng_cleanup (&mngdec->mng);