2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
23 #include "gstflxdec.h"
25 static GstCaps* flxdec_typefind(GstBuffer *buf, gpointer private);
27 /* flx element information */
28 static GstElementDetails flxdec_details = {
33 "Sepp Wijnands <mrrazz@garbage-coderz.net>"
37 static GstTypeDefinition flxdec_definition = {
44 /* Flx signals and args */
55 GST_PADTEMPLATE_FACTORY (sink_factory,
67 GST_PADTEMPLATE_FACTORY (src_video_factory,
74 "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R', 'G', 'B', ' ')),
75 "bpp", GST_PROPS_INT (32),
76 "depth", GST_PROPS_INT (32),
77 "endianness", GST_PROPS_INT (G_LITTLE_ENDIAN),
78 "red_mask", GST_PROPS_INT (0x00ff0000),
79 "green_mask", GST_PROPS_INT (0x0000ff00),
80 "blue_mask", GST_PROPS_INT (0x000000ff),
81 "width", GST_PROPS_INT_RANGE(320, 1280),
82 "height", GST_PROPS_INT_RANGE(200, 1024)
87 static void gst_flxdec_class_init (GstFlxDecClass *klass);
88 static void gst_flxdec_init (GstFlxDec *flxdec);
90 static void gst_flxdec_loop (GstElement *element);
92 static void gst_flxdec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
93 static void gst_flxdec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
96 static void flx_decode_color(GstFlxDec *, guchar *, guchar *);
97 static void flx_decode_brun(GstFlxDec *, guchar *, guchar *);
98 static void flx_decode_delta_fli(GstFlxDec *, guchar *, guchar *);
99 static void flx_decode_delta_flc(GstFlxDec *, guchar *, guchar *);
101 #define rndalign(off) ((off) + ((off) % 2))
103 static GstElementClass *parent_class = NULL;
106 flxdec_typefind (GstBuffer *buf, gpointer private)
108 guchar *data = GST_BUFFER_DATA(buf);
112 if ((data[4] == 0x11 || data[4] == 0x12
113 || data[4] == 0x30 || data[4] == 0x44) && data[5] == 0xaf) {
114 // check the frame type of the first frame
115 if ((data[132] == 0x00 || data[132] == 0xfa) && data[133] == 0xf1) {
116 g_print("GstFlxDec: found supported flx format\n");
117 new = gst_caps_new("flxdec_typefind","video/fli", NULL);
127 gst_flxdec_get_type(void)
129 static GType flxdec_type = 0;
132 static const GTypeInfo flxdec_info = {
133 sizeof(GstFlxDecClass), NULL,
135 (GClassInitFunc)gst_flxdec_class_init,
140 (GInstanceInitFunc)gst_flxdec_init,
142 flxdec_type = g_type_register_static(GST_TYPE_ELEMENT, "GstFlxDec", &flxdec_info, 0);
148 gst_flxdec_class_init (GstFlxDecClass *klass)
150 GObjectClass *gobject_class;
151 GstElementClass *gstelement_class;
153 gobject_class = (GObjectClass*)klass;
154 gstelement_class = (GstElementClass*)klass;
156 parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
158 gobject_class->set_property = NULL;
159 gobject_class->get_property = NULL;
166 gst_flxdec_init(GstFlxDec *flxdec)
168 flxdec->sinkpad = gst_pad_new_from_template (
169 GST_PADTEMPLATE_GET (sink_factory), "sink");
170 gst_element_add_pad(GST_ELEMENT(flxdec),flxdec->sinkpad);
171 gst_element_set_loop_function(GST_ELEMENT(flxdec),gst_flxdec_loop);
173 flxdec->srcpad = gst_pad_new_from_template (
174 GST_PADTEMPLATE_GET (src_video_factory), "src");
175 gst_element_add_pad(GST_ELEMENT(flxdec),flxdec->srcpad);
179 flxdec->new_buf = TRUE;
184 flx_decode_chunks (GstFlxDec *flxdec , gulong count, gchar *data, gchar *dest)
188 g_return_if_fail(data != NULL);
191 hdr = (FlxFrameChunk *) data;
192 data += FlxFrameChunkSize;
198 flx_decode_color(flxdec, data, dest);
199 data += rndalign(hdr->size) - FlxFrameChunkSize;
203 flx_decode_brun(flxdec, data, dest);
204 data += rndalign(hdr->size) - FlxFrameChunkSize;
208 flx_decode_delta_fli(flxdec, data, dest);
209 data += rndalign(hdr->size) - FlxFrameChunkSize;
213 flx_decode_delta_flc(flxdec, data, dest);
214 data += rndalign(hdr->size) - FlxFrameChunkSize;
218 memset(dest, 0, flxdec->size);
222 data += rndalign(hdr->size) - FlxFrameChunkSize;
226 g_print("GstFlxDec: Unimplented chunk type: 0x%02x size: %d\n",
228 g_print("GstFlxDec: Skipping...\n");
229 data += rndalign(hdr->size) - FlxFrameChunkSize;
237 flx_decode_color(GstFlxDec *flxdec, guchar *data, guchar *dest)
239 guint packs, count, indx;
241 g_return_if_fail(flxdec != NULL);
243 packs = (data[0] + (data[1] << 8));
248 g_print("GstFlxDec: cmap packs: %d\n", packs);
250 /* color map index + skip count */
253 /* number of rgb triplets */
254 count = *data++ & 0xff;
258 g_print("GstFlxDec: cmap count: %d (indx: %d)\n", count, indx);
259 flx_set_palette_vector(flxdec->converter, indx, count, data);
266 flx_decode_brun(GstFlxDec *flxdec, guchar *data, guchar *dest)
268 gulong count, lines, row;
271 g_return_if_fail(flxdec != NULL);
273 lines = flxdec->hdr.height;
276 * should not be used anymore, since the flc format can
277 * contain more then 255 RLE packets. we use the frame
282 row = flxdec->hdr.width;
288 count = 0x100 - count;
307 flx_decode_delta_fli(GstFlxDec *flxdec, guchar *data, guchar *dest)
309 gulong count, packets, lines, start_line, start_l;
312 g_return_if_fail(flxdec != NULL);
313 g_return_if_fail(flxdec->delta != NULL);
316 /* use last frame for delta */
317 memcpy(dest, GST_BUFFER_DATA(flxdec->delta),
318 GST_BUFFER_SIZE(flxdec->delta));
320 start_line = (data[0] + (data[1] << 8));
321 lines = (data[2] + (data[3] << 8));
324 /* start position of delta */
325 dest += (flxdec->hdr.width * start_line);
333 dest = start_p + (flxdec->hdr.width * (start_l - lines));
344 count = 0x100 - count;
360 flx_decode_delta_flc(GstFlxDec *flxdec, guchar *data, guchar *dest)
362 gulong count, lines, start_l, opcode;
365 g_return_if_fail(flxdec != NULL);
366 g_return_if_fail(flxdec->delta != NULL);
369 /* use last frame for delta */
370 memcpy(dest, GST_BUFFER_DATA(flxdec->delta),
371 GST_BUFFER_SIZE(flxdec->delta));
373 lines = (data[0] + (data[1] << 8));
380 dest = start_p + (flxdec->hdr.width * (start_l - lines));
382 /* process opcode(s) */
383 while ((opcode = (data[0] + (data[1] << 8))) & 0xc000) {
385 if ((opcode & 0xc000) == 0xc000) {
387 start_l += (0x10000 - opcode);
388 dest += flxdec->hdr.width * (0x10000 - opcode);
391 dest += flxdec->hdr.width;
392 *dest++ = (opcode & 0xff);
397 /* last opcode is the packet count */
406 /* replicate word run */
407 count = 0x100 - count;
414 /* literal word run */
425 flx_get_data(GstFlxDec *flxdec, gulong size)
429 g_return_val_if_fail (flxdec != NULL, NULL);
431 if (flxdec->new_buf) {
432 retbuf = gst_pad_pullregion(flxdec->sinkpad,
433 GST_REGION_OFFSET_LEN, 0, size);
434 flxdec->new_buf = FALSE;
435 flxdec->offset = size;
437 retbuf = gst_pad_pullregion(flxdec->sinkpad, GST_REGION_OFFSET_LEN,
438 flxdec->offset, size);
439 flxdec->offset += size;
447 gst_flxdec_loop (GstElement *element)
451 guchar *data, *chunk;
455 FlxFrameChunk *flxfh;
457 g_return_if_fail (element != NULL);
458 g_return_if_fail (GST_IS_FLXDEC(element));
460 GST_DEBUG (0, "entering loop function\n");
462 flxdec = GST_FLXDEC(element);
464 databuf = flx_get_data(flxdec, FlxHeaderSize);
466 g_return_if_fail (databuf != NULL);
468 data = GST_BUFFER_DATA(databuf);
470 memcpy((char *) &flxdec->hdr, data, sizeof(FlxHeader));
472 gst_buffer_unref (databuf);
477 if (flxh->type != FLX_MAGICHDR_FLI &&
478 flxh->type != FLX_MAGICHDR_FLC &&
479 flxh->type != FLX_MAGICHDR_FLX)
483 g_print("GstFlxDec: size : %d\n", flxh->size);
484 g_print("GstFlxDec: frames : %d\n", flxh->frames);
485 g_print("GstFlxDec: width : %d\n", flxh->width);
486 g_print("GstFlxDec: height : %d\n", flxh->height);
487 g_print("GstFlxDec: depth : %d\n", flxh->depth);
488 g_print("GstFlxDec: speed : %d\n", flxh->speed);
490 gst_pad_set_caps (flxdec->srcpad,
495 "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('R', 'G', 'B', ' ')),
496 "bpp", GST_PROPS_INT (32),
497 "depth", GST_PROPS_INT (32),
498 "endianness", GST_PROPS_INT (G_LITTLE_ENDIAN),
499 "red_mask", GST_PROPS_INT (0x00ff0000),
500 "green_mask", GST_PROPS_INT (0x0000ff00),
501 "blue_mask", GST_PROPS_INT (0x000000ff),
502 "width", GST_PROPS_INT (flxh->width),
503 "height", GST_PROPS_INT (flxh->height),
506 if (flxh->depth <= 8)
507 flxdec->converter = flx_colorspace_converter_new(flxh->width, flxh->height);
509 if (flxh->type == FLX_MAGICHDR_FLC ||
510 flxh->type == FLX_MAGICHDR_FLX) {
511 g_print("GstFlxDec: (FLC) aspect_dx : %d\n",
513 g_print("GstFlxDec: (FLC) aspect_dy : %d\n",
515 g_print("GstFlxDec: (FLC) oframe1 : 0x%08x\n",
517 g_print("GstFlxDec: (FLC) oframe2 : 0x%08x\n",
522 flxdec->size = (flxh->width * flxh->height);
524 // create delta and output frame
525 flxdec->frame = gst_buffer_new();
526 flxdec->delta = gst_buffer_new();
527 GST_BUFFER_DATA(flxdec->frame) = g_malloc(flxdec->size);
528 GST_BUFFER_SIZE(flxdec->frame) = flxdec->size;
529 GST_BUFFER_DATA(flxdec->delta) = g_malloc(flxdec->size);
530 GST_BUFFER_SIZE(flxdec->delta) = flxdec->size;
535 databuf = flx_get_data(flxdec, FlxFrameChunkSize);
537 flxfh = (FlxFrameChunk *) GST_BUFFER_DATA(databuf);
542 buf = flx_get_data(flxdec, flxfh->size-FlxFrameChunkSize);
544 chunk = GST_BUFFER_DATA(buf);
546 if (((FlxFrameType *)chunk)->chunks == 0)
549 // create 32 bits output frame
550 flxdec->out = gst_buffer_new();
551 GST_BUFFER_DATA(flxdec->out) = g_malloc(flxdec->size * 4);
552 GST_BUFFER_SIZE(flxdec->out) = flxdec->size * 4;
556 flx_decode_chunks(flxdec,
557 ((FlxFrameType *)chunk)->chunks,
558 GST_BUFFER_DATA(buf) + FlxFrameTypeSize,
559 GST_BUFFER_DATA(flxdec->frame));
561 // destroy input buffer
562 gst_buffer_unref(buf);
564 // save copy of the current frame for possible delta.
565 memcpy(GST_BUFFER_DATA(flxdec->delta),
566 GST_BUFFER_DATA(flxdec->frame),
567 GST_BUFFER_SIZE(flxdec->delta));
569 // convert current frame.
570 flx_colorspace_convert(flxdec->converter,
571 GST_BUFFER_DATA(flxdec->frame),
572 GST_BUFFER_DATA(flxdec->out));
574 gst_pad_push(flxdec->srcpad, flxdec->out);
579 // destroy header buffer
580 gst_buffer_unref(databuf);
582 gst_element_yield (element);
589 gst_flxdec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
593 /* it's not null if we got it, but it might not be ours */
594 g_return_if_fail(GST_IS_FLXDEC(object));
595 flxdec = GST_FLXDEC(object);
604 gst_flxdec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
608 /* it's not null if we got it, but it might not be ours */
609 g_return_if_fail(GST_IS_FLXDEC(object));
610 flxdec = GST_FLXDEC(object);
614 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
620 plugin_init (GModule *module, GstPlugin *plugin)
622 GstElementFactory *factory;
623 GstTypeFactory *type;
625 factory = gst_elementfactory_new("flxdec", GST_TYPE_FLXDEC, &flxdec_details);
626 g_return_val_if_fail(factory != NULL, FALSE);
628 gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sink_factory));
629 gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (src_video_factory));
631 gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
633 type = gst_typefactory_new (&flxdec_definition);
634 gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
639 GstPluginDesc plugin_desc = {