swfdec/swfdec_sprite_movie.c

   1 /* Swfdec
   2  * Copyright (C) 2006-2008 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "swfdec_sprite_movie.h"
  25 #include "swfdec_as_internal.h"
  26 #include "swfdec_as_strings.h"
  27 #include "swfdec_audio_swf_stream.h"
  28 #include "swfdec_audio_event.h"
  29 #include "swfdec_audio_stream.h"
  30 #include "swfdec_debug.h"
  31 #include "swfdec_filter.h"
  32 #include "swfdec_graphic_movie.h"
  33 #include "swfdec_player_internal.h"
  34 #include "swfdec_ringbuffer.h"
  35 #include "swfdec_script_internal.h"
  36 #include "swfdec_sprite.h"
  37 #include "swfdec_resource.h"
  38 #include "swfdec_sandbox.h"
  39 #include "swfdec_tag.h"
  40
  41 /*** SWFDEC_SPRITE_MOVIE ***/
  42
  43 static gboolean
  44 swfdec_sprite_movie_remove_child (SwfdecMovie *movie, int depth)
  45 {
  46   SwfdecMovie *child = swfdec_movie_find (movie, depth);
  47
  48   if (child == NULL)
  49     return FALSE;
  50
  51   swfdec_movie_remove (child);
  52   return TRUE;
  53 }
  54
  55 static int
  56 swfdec_get_clipeventflags (SwfdecMovie *movie, SwfdecBits * bits)
  57 {
  58   if (SWFDEC_SWF_DECODER (movie->resource->decoder)->version <= 5) {
  59     return swfdec_bits_get_u16 (bits);
  60   } else {
  61     return swfdec_bits_get_u32 (bits);
  62   }
  63 }
  64
  65 static gboolean
  66 swfdec_sprite_movie_perform_old_place (SwfdecSpriteMovie *movie,
  67     SwfdecBits *bits, guint tag)
  68 {
  69   SwfdecPlayer *player = SWFDEC_PLAYER (swfdec_gc_object_get_context (movie));
  70   SwfdecMovie *mov = SWFDEC_MOVIE (movie);
  71   SwfdecMovie *cur;
  72   SwfdecSwfDecoder *dec;
  73   int depth;
  74   cairo_matrix_t transform;
  75   gboolean has_ctrans;
  76   SwfdecColorTransform ctrans;
  77   guint id;
  78   SwfdecGraphic *graphic;
  79
  80   dec = SWFDEC_SWF_DECODER (mov->resource->decoder);
  81
  82   SWFDEC_LOG ("performing PlaceObject on movie %s", mov->name);
  83
  84   id = swfdec_bits_get_u16 (bits);
  85   SWFDEC_LOG ("  id = %d", id);
  86
  87   depth = swfdec_bits_get_u16 (bits);
  88   if (depth >= 16384) {
  89     SWFDEC_FIXME ("depth of placement too high: %u >= 16384", depth);
  90   }
  91   SWFDEC_LOG ("  depth = %d (=> %d)", depth, depth - 16384);
  92   depth -= 16384;
  93
  94   swfdec_bits_get_matrix (bits, &transform, NULL);
  95   SWFDEC_LOG ("  matrix = { %g %g, %g %g } + { %g %g }",
  96       transform.xx, transform.yx,
  97       transform.xy, transform.yy,
  98       transform.x0, transform.y0);
  99
 100   if (swfdec_bits_left (bits)) {
 101     has_ctrans = TRUE;
 102     swfdec_bits_get_color_transform (bits, &ctrans);
 103     SWFDEC_LOG ("  color transform = %d %d  %d %d  %d %d  %d %d",
 104         ctrans.ra, ctrans.rb,
 105         ctrans.ga, ctrans.gb,
 106         ctrans.ba, ctrans.bb,
 107         ctrans.aa, ctrans.ab);
 108   } else {
 109     has_ctrans = FALSE;
 110   }
 111
 112   /* 3) perform the actions depending on the set properties */
 113   cur = swfdec_movie_find (mov, depth);
 114   graphic = swfdec_swf_decoder_get_character (dec, id);
 115
 116   if (!SWFDEC_IS_GRAPHIC (graphic)) {
 117     SWFDEC_FIXME ("character %u is not a graphic (does it even exist?), aborting", id);
 118     return FALSE;
 119   }
 120
 121   cur = swfdec_movie_new (player, depth, mov, mov->resource, graphic, NULL);
 122   swfdec_movie_set_static_properties (cur, &transform,
 123       has_ctrans ? &ctrans : NULL, -1, 0, 0, NULL);
 124   if (SWFDEC_IS_ACTOR (cur)) {
 125     SwfdecActor *actor = SWFDEC_ACTOR (cur);
 126     swfdec_actor_queue_script (actor, SWFDEC_EVENT_INITIALIZE);
 127     swfdec_actor_queue_script (actor, SWFDEC_EVENT_CONSTRUCT);
 128     swfdec_actor_queue_script (actor, SWFDEC_EVENT_LOAD);
 129   }
 130   swfdec_movie_initialize (cur);
 131
 132   return TRUE;
 133 }
 134
 135
 136 static gboolean
 137 swfdec_sprite_movie_perform_place (SwfdecSpriteMovie *movie, SwfdecBits *bits, guint tag)
 138 {
 139   SwfdecPlayer *player = SWFDEC_PLAYER (swfdec_gc_object_get_context (movie));
 140   SwfdecMovie *mov = SWFDEC_MOVIE (movie);
 141   SwfdecMovie *cur;
 142   SwfdecSwfDecoder *dec;
 143   gboolean has_clip_actions;
 144   gboolean has_clip_depth;
 145   gboolean has_name;
 146   gboolean has_ratio;
 147   gboolean has_ctrans;
 148   gboolean has_transform;
 149   gboolean has_character;
 150   gboolean move;
 151   int depth;
 152   gboolean cache;
 153   gboolean has_blend_mode = 0;
 154   gboolean has_filter = 0;
 155   int clip_depth;
 156   cairo_matrix_t transform;
 157   SwfdecColorTransform ctrans;
 158   guint ratio, id, version;
 159   SwfdecEventList *events;
 160   const char *name;
 161   guint blend_mode;
 162   SwfdecGraphic *graphic;
 163   GSList *filters;
 164
 165   dec = SWFDEC_SWF_DECODER (mov->resource->decoder);
 166   version = dec->version;
 167
 168   /* 1) check which stuff is set */
 169   has_clip_actions = swfdec_bits_getbit (bits);
 170   has_clip_depth = swfdec_bits_getbit (bits);
 171   has_name = swfdec_bits_getbit (bits);
 172   has_ratio = swfdec_bits_getbit (bits);
 173   has_ctrans = swfdec_bits_getbit (bits);
 174   has_transform = swfdec_bits_getbit (bits);
 175   has_character = swfdec_bits_getbit (bits);
 176   move = swfdec_bits_getbit (bits);
 177
 178   SWFDEC_LOG ("performing PlaceObject%d on movie %s", tag == SWFDEC_TAG_PLACEOBJECT2 ? 2 : 3, mov->name);
 179   SWFDEC_LOG ("  has_clip_actions = %d", has_clip_actions);
 180   SWFDEC_LOG ("  has_clip_depth = %d", has_clip_depth);
 181   SWFDEC_LOG ("  has_name = %d", has_name);
 182   SWFDEC_LOG ("  has_ratio = %d", has_ratio);
 183   SWFDEC_LOG ("  has_ctrans = %d", has_ctrans);
 184   SWFDEC_LOG ("  has_transform = %d", has_transform);
 185   SWFDEC_LOG ("  has_character = %d", has_character);
 186   SWFDEC_LOG ("  move = %d", move);
 187
 188   if (tag == SWFDEC_TAG_PLACEOBJECT3) {
 189     swfdec_bits_getbits (bits, 5);
 190     cache = swfdec_bits_getbit (bits);
 191     has_blend_mode = swfdec_bits_getbit (bits);
 192     has_filter = swfdec_bits_getbit (bits);
 193     SWFDEC_LOG ("  cache = %d", cache);
 194     SWFDEC_LOG ("  has filter = %d", has_filter);
 195     SWFDEC_LOG ("  has blend mode = %d", has_blend_mode);
 196   }
 197
 198   /* 2) read all properties */
 199   depth = swfdec_bits_get_u16 (bits);
 200   if (depth >= 16384) {
 201     SWFDEC_FIXME ("depth of placement too high: %u >= 16384", depth);
 202   }
 203   SWFDEC_LOG ("  depth = %d (=> %d)", depth, depth - 16384);
 204   depth -= 16384;
 205   if (has_character) {
 206     id = swfdec_bits_get_u16 (bits);
 207     SWFDEC_LOG ("  id = %d", id);
 208   } else {
 209     id = 0;
 210   }
 211
 212   if (has_transform) {
 213     swfdec_bits_get_matrix (bits, &transform, NULL);
 214     SWFDEC_LOG ("  matrix = { %g %g, %g %g } + { %g %g }",
 215         transform.xx, transform.yx,
 216         transform.xy, transform.yy,
 217         transform.x0, transform.y0);
 218   }
 219   if (has_ctrans) {
 220     swfdec_bits_get_color_transform (bits, &ctrans);
 221     SWFDEC_LOG ("  color transform = %d %d  %d %d  %d %d  %d %d",
 222         ctrans.ra, ctrans.rb,
 223         ctrans.ga, ctrans.gb,
 224         ctrans.ba, ctrans.bb,
 225         ctrans.aa, ctrans.ab);
 226   }
 227
 228   if (has_ratio) {
 229     ratio = swfdec_bits_get_u16 (bits);
 230     SWFDEC_LOG ("  ratio = %d", ratio);
 231   } else {
 232     ratio = -1;
 233   }
 234
 235   if (has_name) {
 236     char *s = swfdec_bits_get_string (bits, version);
 237     if (s) {
 238       name = swfdec_as_context_give_string (SWFDEC_AS_CONTEXT (player), s);
 239       SWFDEC_LOG ("  name = %s", name);
 240     } else {
 241       name = NULL;
 242     }
 243   } else {
 244     name = NULL;
 245   }
 246
 247   if (has_clip_depth) {
 248     clip_depth = swfdec_bits_get_u16 (bits) - 16384;
 249     SWFDEC_LOG ("  clip_depth = %d (=> %d)", clip_depth + 16384, clip_depth);
 250   } else {
 251     clip_depth = 0;
 252   }
 253
 254   if (has_filter) {
 255     filters = swfdec_filter_parse (player, bits);
 256   } else {
 257     filters = NULL;
 258   }
 259
 260   if (has_blend_mode) {
 261     blend_mode = swfdec_bits_get_u8 (bits);
 262     SWFDEC_LOG ("  blend mode = %u", blend_mode);
 263   } else {
 264     blend_mode = 0;
 265   }
 266
 267   if (has_clip_actions) {
 268     int reserved, clip_event_flags, event_flags, key_code;
 269     char *script_name;
 270
 271     events = swfdec_event_list_new ();
 272     reserved = swfdec_bits_get_u16 (bits);
 273     clip_event_flags = swfdec_get_clipeventflags (mov, bits);
 274
 275     if (name)
 276       script_name = g_strdup (name);
 277     else if (id)
 278       script_name = g_strdup_printf ("Sprite%u", id);
 279     else
 280       script_name = g_strdup ("unknown");
 281     while ((event_flags = swfdec_get_clipeventflags (mov, bits)) != 0) {
 282       guint length = swfdec_bits_get_u32 (bits);
 283       SwfdecBits action_bits;
 284
 285       swfdec_bits_init_bits (&action_bits, bits, length);
 286       if (event_flags & (1<<SWFDEC_EVENT_KEY_PRESS))
 287         key_code = swfdec_bits_get_u8 (&action_bits);
 288       else
 289         key_code = 0;
 290
 291       SWFDEC_INFO ("clip event with flags 0x%X, key code %d", event_flags, key_code);
 292 #define SWFDEC_UNIMPLEMENTED_EVENTS \
 293   ((1<< SWFDEC_EVENT_DATA))
 294       if (event_flags & SWFDEC_UNIMPLEMENTED_EVENTS) {
 295         SWFDEC_ERROR ("using non-implemented clip events %u", event_flags & SWFDEC_UNIMPLEMENTED_EVENTS);
 296       }
 297       swfdec_event_list_parse (events, &action_bits, version,
 298           event_flags, key_code, script_name);
 299       if (swfdec_bits_left (&action_bits)) {
 300         SWFDEC_ERROR ("not all action data was parsed: %u bytes left",
 301             swfdec_bits_left (&action_bits));
 302       }
 303     }
 304     g_free (script_name);
 305   } else {
 306     events = NULL;
 307   }
 308
 309   /* 3) perform the actions depending on the set properties */
 310   cur = swfdec_movie_find (mov, depth);
 311   graphic = swfdec_swf_decoder_get_character (dec, id);
 312   if (move) {
 313     if (cur == NULL) {
 314       SWFDEC_INFO ("no movie at depth %d, ignoring move command", depth);
 315       goto out;
 316     }
 317     if (graphic) {
 318       SwfdecMovieClass *klass = SWFDEC_MOVIE_GET_CLASS (cur);
 319       if (klass->replace)
 320         klass->replace (cur, graphic);
 321     }
 322     swfdec_movie_set_static_properties (cur, has_transform ? &transform : NULL,
 323         has_ctrans ? &ctrans : NULL, ratio, clip_depth, blend_mode, events);
 324   } else {
 325     if (cur != NULL && version > 5) {
 326       SWFDEC_INFO ("depth %d is already occupied by movie %s, not placing", depth, cur->name);
 327       goto out;
 328     }
 329     if (!SWFDEC_IS_GRAPHIC (graphic)) {
 330       SWFDEC_FIXME ("character %u is not a graphic (does it even exist?), aborting", id);
 331       if (events)
 332         swfdec_event_list_free (events);
 333       g_slist_foreach (filters, (GFunc) g_object_unref, NULL);
 334       g_slist_free (filters);
 335       return FALSE;
 336     }
 337     cur = swfdec_movie_new (player, depth, mov, mov->resource, graphic, name);
 338     swfdec_movie_set_static_properties (cur, has_transform ? &transform : NULL,
 339         has_ctrans ? &ctrans : NULL, ratio, clip_depth, blend_mode, events);
 340     if (SWFDEC_IS_ACTOR (cur)) {
 341       SwfdecActor *actor = SWFDEC_ACTOR (cur);
 342       swfdec_actor_queue_script (actor, SWFDEC_EVENT_INITIALIZE);
 343       swfdec_actor_queue_script (actor, SWFDEC_EVENT_CONSTRUCT);
 344       swfdec_actor_queue_script (actor, SWFDEC_EVENT_LOAD);
 345     }
 346     swfdec_movie_initialize (cur);
 347   }
 348 out:
 349   if (has_filter) {
 350     if (cur->filters)
 351       g_slist_free (cur->filters);
 352     swfdec_movie_invalidate_next (cur);
 353     cur->filters = filters;
 354   }
 355
 356   if (events)
 357     swfdec_event_list_free (events);
 358   return TRUE;
 359 }
 360
 361 static void
 362 swfdec_sprite_movie_start_sound (SwfdecMovie *movie, SwfdecBits *bits)
 363 {
 364   SwfdecSoundChunk *chunk;
 365   int id;
 366
 367   id = swfdec_bits_get_u16 (bits);
 368   chunk = swfdec_sound_parse_chunk (SWFDEC_SWF_DECODER (movie->resource->decoder), bits, id);
 369   if (chunk) {
 370     SwfdecAudio *audio = swfdec_audio_event_new_from_chunk (SWFDEC_PLAYER (
 371           swfdec_gc_object_get_context (movie)), chunk);
 372     if (audio)
 373       g_object_unref (audio);
 374   }
 375 }
 376
 377 static gboolean
 378 swfdec_sprite_movie_perform_one_action (SwfdecSpriteMovie *movie, guint tag, SwfdecBuffer *buffer,
 379     gboolean fast_forward, gboolean first_time)
 380 {
 381   SwfdecMovie *mov = SWFDEC_MOVIE (movie);
 382   SwfdecActor *actor = SWFDEC_ACTOR (movie);
 383   SwfdecPlayer *player = SWFDEC_PLAYER (swfdec_gc_object_get_context (mov));
 384   SwfdecBits bits;
 385
 386   g_assert (mov->resource);
 387   swfdec_bits_init (&bits, buffer);
 388
 389   SWFDEC_LOG ("%p: executing %uth tag %s in frame %u", movie, movie->next_action - 1,
 390       swfdec_swf_decoder_get_tag_name (tag), movie->frame);
 391   switch (tag) {
 392     case SWFDEC_TAG_SETBACKGROUNDCOLOR:
 393       swfdec_player_set_background_color (player, swfdec_bits_get_color (&bits));
 394       return TRUE;
 395     case SWFDEC_TAG_DOACTION:
 396       SWFDEC_LOG ("SCRIPT action");
 397       if (!fast_forward) {
 398         SwfdecScript *script = swfdec_swf_decoder_get_script (
 399             SWFDEC_SWF_DECODER (mov->resource->decoder), buffer->data);
 400         if (script) {
 401           swfdec_player_add_action_script (player, actor, script,
 402               SWFDEC_PLAYER_ACTION_QUEUE_NORMAL);
 403         } else {
 404           SWFDEC_ERROR ("Failed to locate script for DoAction tag");
 405         }
 406       }
 407       return TRUE;
 408     case SWFDEC_TAG_PLACEOBJECT:
 409       return swfdec_sprite_movie_perform_old_place (movie, &bits, tag);
 410     case SWFDEC_TAG_PLACEOBJECT2:
 411     case SWFDEC_TAG_PLACEOBJECT3:
 412       return swfdec_sprite_movie_perform_place (movie, &bits, tag);
 413     case SWFDEC_TAG_REMOVEOBJECT:
 414       /* yes, this code is meant to be like this - the following u16 is the
 415        * character id, that we don't care about, the rest is like RemoveObject2
 416        */
 417       swfdec_bits_get_u16 (&bits);
 418       /* fall through */
 419     case SWFDEC_TAG_REMOVEOBJECT2:
 420       {
 421         int depth = swfdec_bits_get_u16 (&bits);
 422         SWFDEC_LOG ("REMOVE action: depth %d => %d", depth, depth - 16384);
 423         depth -= 16384;
 424         if (!swfdec_sprite_movie_remove_child (mov, depth))
 425           SWFDEC_INFO ("could not remove, no child at depth %d", depth);
 426       }
 427       return TRUE;
 428     case SWFDEC_TAG_STARTSOUND:
 429       if (!fast_forward)
 430         swfdec_sprite_movie_start_sound (mov, &bits);
 431       return TRUE;
 432     case SWFDEC_TAG_SHOWFRAME:
 433       if (movie->frame < movie->n_frames) {
 434         movie->frame++;
 435       } else {
 436         SWFDEC_ERROR ("too many ShowFrame tags");
 437       }
 438       return FALSE;
 439     case SWFDEC_TAG_EXPORTASSETS:
 440       {
 441         SwfdecResource *resource = swfdec_movie_get_own_resource (mov);
 442         guint i, count;
 443
 444         g_assert (resource); /* must hold, ExportAssets can only be in root movies */
 445         if (!first_time)
 446           return TRUE;
 447         count = swfdec_bits_get_u16 (&bits);
 448         SWFDEC_LOG ("exporting %u assets", count);
 449         for (i = 0; i < count && swfdec_bits_left (&bits); i++) {
 450           SwfdecSwfDecoder *s = SWFDEC_SWF_DECODER (resource->decoder);
 451           guint id;
 452           SwfdecCharacter *object;
 453           char *name;
 454
 455           id = swfdec_bits_get_u16 (&bits);
 456           object = swfdec_swf_decoder_get_character (s, id);
 457           name = swfdec_bits_get_string (&bits, s->version);
 458           if (object == NULL) {
 459             SWFDEC_ERROR ("cannot export id %u as %s, id wasn't found", id, name);
 460           } else if (name == NULL) {
 461             SWFDEC_ERROR ("cannot export id %u, no name was given", id);
 462           } else {
 463             SWFDEC_LOG ("exporting %s %u as %s", G_OBJECT_TYPE_NAME (object), id, name);
 464             swfdec_resource_add_export (resource, object, name);
 465           }
 466           g_free (name);
 467         }
 468       }
 469       return TRUE;
 470     case SWFDEC_TAG_DOINITACTION:
 471       if (!first_time)
 472         return TRUE;
 473       if (!swfdec_movie_get_own_resource (mov)) {
 474         SWFDEC_FIXME ("behavior of init actions in DefineSprite untested");
 475       }
 476       {
 477         guint id;
 478         SwfdecSprite *sprite;
 479
 480         id = swfdec_bits_get_u16 (&bits);
 481         SWFDEC_LOG ("InitAction");
 482         SWFDEC_LOG ("  id = %u", id);
 483         sprite = swfdec_swf_decoder_get_character (SWFDEC_SWF_DECODER (mov->resource->decoder), id);
 484         if (!SWFDEC_IS_SPRITE (sprite)) {
 485           SWFDEC_ERROR ("character %u is not a sprite", id);
 486           return TRUE;
 487         }
 488         if (sprite->init_action != NULL) {
 489           SWFDEC_ERROR ("sprite %u already has an init action", id);
 490           return TRUE;
 491         }
 492         sprite->init_action = swfdec_script_ref (swfdec_swf_decoder_get_script (
 493             SWFDEC_SWF_DECODER (mov->resource->decoder), buffer->data + 2));
 494         if (sprite->init_action) {
 495           swfdec_player_add_action_script (player, actor, sprite->init_action,
 496               SWFDEC_PLAYER_ACTION_QUEUE_INIT);
 497         } else {
 498           SWFDEC_ERROR ("Failed to locate script for InitAction of Sprite %u", id);
 499         }
 500       }
 501       return TRUE;
 502     case SWFDEC_TAG_SOUNDSTREAMHEAD:
 503     case SWFDEC_TAG_SOUNDSTREAMHEAD2:
 504       /* ignore, those are handled by the sound stream */
 505       return TRUE;
 506     case SWFDEC_TAG_SOUNDSTREAMBLOCK:
 507       if (!fast_forward) {
 508         if (movie->sound_stream == NULL) {
 509           movie->sound_stream = swfdec_audio_swf_stream_new (player, movie->sprite,
 510               movie->next_action - 1);
 511         }
 512         movie->sound_active = TRUE;
 513       }
 514       return TRUE;
 515     default:
 516       g_assert_not_reached ();
 517       return FALSE;
 518   }
 519 }
 520
 521 static gboolean
 522 swfdec_movie_is_compatible (SwfdecMovie *movie, SwfdecMovie *with)
 523 {
 524   g_assert (movie->depth == with->depth);
 525
 526   if (movie->original_ratio != with->original_ratio)
 527     return FALSE;
 528
 529   if (G_OBJECT_TYPE (movie) != G_OBJECT_TYPE (with))
 530     return FALSE;
 531
 532   return TRUE;
 533 }
 534
 535 static GList *
 536 my_g_list_split (GList *list, GList *split)
 537 {
 538   GList *prev;
 539
 540   if (split == NULL)
 541     return list;
 542
 543   prev = split->prev;
 544   if (prev == NULL)
 545     return NULL;
 546   prev->next = NULL;
 547   split->prev = NULL;
 548   return list;
 549 }
 550
 551 void
 552 swfdec_sprite_movie_goto (SwfdecSpriteMovie *movie, guint goto_frame)
 553 {
 554   SwfdecMovie *mov;
 555   SwfdecPlayer *player;
 556   GList *old;
 557   guint n;
 558   gboolean remove_audio;
 559
 560   g_return_if_fail (SWFDEC_IS_SPRITE_MOVIE (movie));
 561
 562   mov = SWFDEC_MOVIE (movie);
 563   /* lots of things where we've got nothing to do */
 564   if (goto_frame == 0 || goto_frame > movie->n_frames ||
 565       movie->sprite == NULL || mov->state >= SWFDEC_MOVIE_STATE_REMOVED || goto_frame == movie->frame)
 566     return;
 567
 568   if (goto_frame > movie->sprite->parse_frame) {
 569     SWFDEC_WARNING ("jumping to not-yet-loaded frame %u (loaded: %u/%u)",
 570         goto_frame, movie->sprite->parse_frame, movie->sprite->n_frames);
 571     return;
 572   }
 573
 574   player = SWFDEC_PLAYER (swfdec_gc_object_get_context (movie));
 575   SWFDEC_LOG ("doing goto %u for %p %d", goto_frame, movie,
 576       SWFDEC_CHARACTER (movie->sprite)->id);
 577
 578   SWFDEC_DEBUG ("performing goto %u -> %u for character %u",
 579       movie->frame, goto_frame, SWFDEC_CHARACTER (movie->sprite)->id);
 580   if (goto_frame < movie->frame) {
 581     GList *walk;
 582     movie->frame = 0;
 583     for (walk = mov->list; walk &&
 584         swfdec_depth_classify (SWFDEC_MOVIE (walk->data)->depth) != SWFDEC_DEPTH_CLASS_TIMELINE;
 585         walk = walk->next) {
 586       /* do nothing */
 587     }
 588     old = walk;
 589     mov->list = my_g_list_split (mov->list, old);
 590     for (walk = old; walk &&
 591         swfdec_depth_classify (SWFDEC_MOVIE (walk->data)->depth) == SWFDEC_DEPTH_CLASS_TIMELINE;
 592         walk = walk->next) {
 593       /* do nothing */
 594     }
 595     old = my_g_list_split (old, walk);
 596     mov->list = g_list_concat (mov->list, walk);
 597     n = goto_frame;
 598     movie->next_action = 0;
 599     remove_audio = TRUE;
 600   } else {
 601     /* NB: this path is also taken on init */
 602     old = NULL;
 603     n = goto_frame - movie->frame;
 604     remove_audio = n > 1;
 605   }
 606   /* remove audio after seeks */
 607   if (remove_audio && movie->sound_stream) {
 608     swfdec_audio_remove (movie->sound_stream);
 609     g_object_unref (movie->sound_stream);
 610     movie->sound_stream = NULL;
 611   }
 612   remove_audio = !movie->sound_active;
 613   movie->sound_active = FALSE;
 614   while (n) {
 615     guint tag;
 616     gboolean first_time;
 617     SwfdecBuffer *buffer;
 618     if (!swfdec_sprite_get_action (movie->sprite, movie->next_action, &tag, &buffer))
 619       break;
 620     movie->next_action++;
 621     if (movie->next_action > movie->max_action) {
 622       first_time = TRUE;
 623       movie->max_action = movie->next_action;
 624     } else {
 625       first_time = FALSE;
 626     }
 627     if (!swfdec_sprite_movie_perform_one_action (movie, tag, buffer, n > 1, first_time))
 628       n--;
 629   }
 630   /* now try to copy eventual movies */
 631   if (old) {
 632     SwfdecMovie *prev, *cur;
 633     GList *old_walk, *walk;
 634     walk = mov->list;
 635     old_walk = old;
 636     if (!walk)
 637       goto out;
 638     cur = walk->data;
 639     for (; old_walk; old_walk = old_walk->next) {
 640       prev = old_walk->data;
 641       while (cur->depth < prev->depth) {
 642         walk = walk->next;
 643         if (!walk)
 644           goto out;
 645         cur = walk->data;
 646       }
 647       if (cur->depth == prev->depth &&
 648           swfdec_movie_is_compatible (prev, cur)) {
 649         SwfdecMovieClass *klass = SWFDEC_MOVIE_GET_CLASS (prev);
 650         walk->data = prev;
 651         /* FIXME: This merging stuff probably needs to be improved a _lot_ */
 652         if (klass->replace)
 653           klass->replace (prev, cur->graphic);
 654         swfdec_movie_set_static_properties (prev, &cur->original_transform,
 655             &cur->color_transform, cur->original_ratio, cur->clip_depth,
 656             cur->blend_mode, SWFDEC_IS_ACTOR (cur) ? SWFDEC_ACTOR (cur)->events : NULL);
 657         swfdec_movie_destroy (cur);
 658         cur = prev;
 659         continue;
 660       }
 661       swfdec_movie_remove (prev);
 662     }
 663 out:
 664     for (; old_walk; old_walk = old_walk->next) {
 665       swfdec_movie_remove (old_walk->data);
 666     }
 667     g_list_free (old);
 668   }
 669
 670   /* after two frames without SoundStreamBlock, audio apparently gets removed */
 671   if (!movie->sound_active && remove_audio && movie->sound_stream != NULL) {
 672     swfdec_audio_remove (movie->sound_stream);
 673     g_object_unref (movie->sound_stream);
 674     movie->sound_stream = NULL;
 675   }
 676 }
 677
 678 /*** MOVIE ***/
 679
 680 G_DEFINE_TYPE (SwfdecSpriteMovie, swfdec_sprite_movie, SWFDEC_TYPE_ACTOR)
 681
 682 static void
 683 swfdec_sprite_movie_dispose (GObject *object)
 684 {
 685   G_GNUC_UNUSED SwfdecSpriteMovie *movie = SWFDEC_SPRITE_MOVIE (object);
 686
 687   g_assert (movie->sound_stream == NULL);
 688
 689   G_OBJECT_CLASS (swfdec_sprite_movie_parent_class)->dispose (object);
 690 }
 691
 692 static void
 693 swfdec_sprite_movie_init_movie (SwfdecMovie *mov)
 694 {
 695   SwfdecSpriteMovie *movie = SWFDEC_SPRITE_MOVIE (mov);
 696
 697   g_assert (movie->frame == (guint) -1);
 698   movie->frame = 0;
 699   swfdec_sprite_movie_goto (movie, 1);
 700 }
 701
 702 static GObject *
 703 swfdec_sprite_movie_constructor (GType type, guint n_construct_properties,
 704     GObjectConstructParam *construct_properties)
 705 {
 706   GObject *object;
 707   SwfdecMovie *movie;
 708
 709   object = G_OBJECT_CLASS (swfdec_sprite_movie_parent_class)->constructor (type,
 710       n_construct_properties, construct_properties);
 711
 712   movie = SWFDEC_MOVIE (object);
 713   if (movie->resource->sandbox) {
 714     /* FIXME: This hack is probably wrong */
 715     SwfdecAsObject *o = swfdec_as_relay_get_as_object (SWFDEC_AS_RELAY (movie));
 716     if (swfdec_sandbox_try_use (movie->resource->sandbox)) {
 717       swfdec_as_object_set_constructor_by_name (o,
 718           SWFDEC_AS_STR_MovieClip, NULL);
 719       swfdec_sandbox_unuse (movie->resource->sandbox);
 720     } else {
 721       swfdec_as_object_set_constructor_by_name (o,
 722           SWFDEC_AS_STR_MovieClip, NULL);
 723     }
 724   }
 725
 726   if (movie->graphic) {
 727     SwfdecSpriteMovie *smovie = SWFDEC_SPRITE_MOVIE (object);
 728     smovie->sprite = SWFDEC_SPRITE (movie->graphic);
 729     smovie->n_frames = smovie->sprite->n_frames;
 730   }
 731
 732   return object;
 733 }
 734
 735 static void
 736 swfdec_sprite_movie_iterate (SwfdecActor *actor)
 737 {
 738   SwfdecSpriteMovie *movie = SWFDEC_SPRITE_MOVIE (actor);
 739   guint goto_frame;
 740
 741   if (SWFDEC_MOVIE (actor)->state >= SWFDEC_MOVIE_STATE_REMOVED)
 742     return;
 743
 744   if (movie->sprite && movie->frame == (guint) -1)
 745     movie->frame = 0;
 746
 747   swfdec_actor_queue_script (actor, SWFDEC_EVENT_ENTER);
 748   if (movie->playing && movie->sprite != NULL) {
 749     if (movie->frame == movie->n_frames)
 750       goto_frame = 1;
 751     else if (movie->sprite && movie->frame == movie->sprite->parse_frame)
 752       goto_frame = movie->frame;
 753     else
 754       goto_frame = movie->frame + 1;
 755     swfdec_sprite_movie_goto (movie, goto_frame);
 756   }
 757 }
 758
 759 static void
 760 swfdec_sprite_movie_finish_movie (SwfdecMovie *mov)
 761 {
 762   SwfdecSpriteMovie *movie = SWFDEC_SPRITE_MOVIE (mov);
 763   SwfdecPlayer *player = SWFDEC_PLAYER (swfdec_gc_object_get_context (mov));
 764
 765   swfdec_player_remove_all_actions (player, SWFDEC_ACTOR (mov));
 766   if (movie->sound_stream) {
 767     swfdec_audio_remove (movie->sound_stream);
 768     g_object_unref (movie->sound_stream);
 769     movie->sound_stream = NULL;
 770   }
 771 }
 772
 773 static SwfdecAsValue
 774 swfdec_sprite_movie_property_get (SwfdecMovie *mov, guint prop_id)
 775 {
 776   SwfdecSpriteMovie *movie = SWFDEC_SPRITE_MOVIE (mov);
 777   SwfdecAsContext *cx = swfdec_gc_object_get_context (mov);
 778
 779   switch (prop_id) {
 780     case SWFDEC_MOVIE_PROPERTY_CURRENTFRAME:
 781       return swfdec_as_value_from_integer (cx, movie->frame);
 782       break;
 783     case SWFDEC_MOVIE_PROPERTY_FRAMESLOADED:
 784       return swfdec_as_value_from_integer (cx, swfdec_sprite_movie_get_frames_loaded (movie));
 785       break;
 786     case SWFDEC_MOVIE_PROPERTY_TOTALFRAMES:
 787       return swfdec_as_value_from_integer (cx, swfdec_sprite_movie_get_frames_total (movie));
 788       break;
 789     default:
 790       return SWFDEC_MOVIE_CLASS (swfdec_sprite_movie_parent_class)->property_get (mov, prop_id);
 791   }
 792 }
 793
 794 static void
 795 swfdec_sprite_movie_class_init (SwfdecSpriteMovieClass * g_class)
 796 {
 797   GObjectClass *object_class = G_OBJECT_CLASS (g_class);
 798   SwfdecMovieClass *movie_class = SWFDEC_MOVIE_CLASS (g_class);
 799   SwfdecActorClass *actor_class = SWFDEC_ACTOR_CLASS (g_class);
 800
 801   object_class->dispose = swfdec_sprite_movie_dispose;
 802   object_class->constructor = swfdec_sprite_movie_constructor;
 803
 804   movie_class->init_movie = swfdec_sprite_movie_init_movie;
 805   movie_class->finish_movie = swfdec_sprite_movie_finish_movie;
 806   movie_class->property_get = swfdec_sprite_movie_property_get;
 807
 808   actor_class->iterate_start = swfdec_sprite_movie_iterate;
 809 }
 810
 811 static void
 812 swfdec_sprite_movie_init (SwfdecSpriteMovie * movie)
 813 {
 814   movie->playing = TRUE;
 815   movie->frame = (guint) -1;
 816 }
 817
 818 /**
 819  * swfdec_sprite_movie_get_frames_loaded:
 820  * @movie: a #SwfdecSpriteMovie
 821  *
 822  * Computes the number of loaded frames as used by the _framesloaded property
 823  * or the WaitForFrame actions. If the @movie is fully loaded, this is the
 824  * amount of total frames of the sprite it displays, or 0 if it has no sprite.
 825  * If the movie is not fully loaded, it is the amount of frames that are
 826  * completely loaded minus one. Welcome to the world of Flash.
 827  *
 828  * Returns: The number of loaded frames as reported by ActionScript.
 829  **/
 830 int
 831 swfdec_sprite_movie_get_frames_loaded (SwfdecSpriteMovie *movie)
 832 {
 833   SwfdecResource *resource;
 834   SwfdecDecoder *dec;
 835
 836   g_return_val_if_fail (SWFDEC_IS_SPRITE_MOVIE (movie), 0);
 837
 838   resource = swfdec_movie_get_own_resource (SWFDEC_MOVIE (movie));
 839   if (resource == NULL) {
 840     /* FIXME: can we set n_frames to 1 for movies without sprites instead? */
 841     if (movie->sprite)
 842       return movie->n_frames;
 843     else
 844       return 1;
 845   }
 846   dec = resource->decoder;
 847   if (dec == NULL)
 848     return -1;
 849   if (dec->frames_loaded < dec->frames_total)
 850     return dec->frames_loaded - 1;
 851   return dec->frames_total;
 852 }
 853
 854 int
 855 swfdec_sprite_movie_get_frames_total (SwfdecSpriteMovie *movie)
 856 {
 857   SwfdecResource *resource;
 858   SwfdecDecoder *dec;
 859
 860   g_return_val_if_fail (SWFDEC_IS_SPRITE_MOVIE (movie), 0);
 861
 862   resource = swfdec_movie_get_own_resource (SWFDEC_MOVIE (movie));
 863   if (resource == NULL) {
 864     /* FIXME: can we set n_frames to 1 for movies without sprites instead? */
 865     if (movie->sprite)
 866       return movie->n_frames;
 867     else
 868       return 1;
 869   }
 870   dec = resource->decoder;
 871   if (dec == NULL)
 872     return 0;
 873   return dec->frames_total;
 874 }