sequencer_add.c

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * Contributor(s): Blender Foundation, 2003-2009, Campbell Barton
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <stdlib.h>
#include <math.h>
#include <string.h>

#ifndef WIN32
#include <unistd.h>
#else
#include <io.h>
#endif
#include <sys/types.h>

#include "MEM_guardedalloc.h"

#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"

#include "DNA_scene_types.h"
#include "DNA_userdef_types.h"

#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_sequencer.h"
#include "BKE_report.h"


#include "WM_api.h"
#include "WM_types.h"

#include "RNA_define.h"
#include "RNA_enum_types.h"

/* for menu/popup icons etc etc*/

#include "ED_screen.h"

#include "UI_view2d.h"

#include "BKE_sound.h"

#ifdef WITH_AUDASPACE
#  include "AUD_C-API.h"
#endif

/* own include */
#include "sequencer_intern.h"

/* Generic functions, reused by add strip operators */

/* avoid passing multiple args and be more verbose */
#define SEQPROP_STARTFRAME  (1<<0)
#define SEQPROP_ENDFRAME    (1<<1)
#define SEQPROP_NOPATHS     (1<<2)
#define SEQPROP_NOCHAN      (1<<3)

#define SELECT 1

static void sequencer_generic_props__internal(wmOperatorType *ot, int flag)
{
    if(flag & SEQPROP_STARTFRAME)
        RNA_def_int(ot->srna, "frame_start", 0, INT_MIN, INT_MAX, "Start Frame", "Start frame of the sequence strip", INT_MIN, INT_MAX);
    
    if(flag & SEQPROP_ENDFRAME)
        RNA_def_int(ot->srna, "frame_end", 0, INT_MIN, INT_MAX, "End Frame", "End frame for the color strip", INT_MIN, INT_MAX); /* not useual since most strips have a fixed length */
    
    RNA_def_int(ot->srna, "channel", 1, 1, MAXSEQ, "Channel", "Channel to place this strip into", 1, MAXSEQ);
    
    RNA_def_boolean(ot->srna, "replace_sel", 1, "Replace Selection", "replace the current selection");

    RNA_def_boolean(ot->srna, "overlap", 0, "Allow Overlap", "Don't correct overlap on new sequence strips");
}

static void sequencer_generic_invoke_path__internal(bContext *C, wmOperator *op, const char *identifier)
{
    if(RNA_struct_find_property(op->ptr, identifier)) {
        Scene *scene= CTX_data_scene(C);
        Sequence *last_seq= seq_active_get(scene);
        if(last_seq && last_seq->strip && SEQ_HAS_PATH(last_seq)) {
            char path[sizeof(last_seq->strip->dir)];
            BLI_strncpy(path, last_seq->strip->dir, sizeof(path));
            BLI_path_abs(path, G.main->name);
            RNA_string_set(op->ptr, identifier, path);
        }
    }
}

static void sequencer_generic_invoke_xy__internal(bContext *C, wmOperator *op, wmEvent *event, int flag)
{
    View2D *v2d= UI_view2d_fromcontext(C);
    
    float mval_v2d[2];
    
    UI_view2d_region_to_view(v2d, event->mval[0], event->mval[1], &mval_v2d[0], &mval_v2d[1]);

    /* effect strips dont need a channel initialized from the mouse */
    if(!(flag & SEQPROP_NOCHAN)) {
        RNA_int_set(op->ptr, "channel", (int)mval_v2d[1]+0.5f);
    }

    RNA_int_set(op->ptr, "frame_start", (int)mval_v2d[0]);
    
    if ((flag & SEQPROP_ENDFRAME) && RNA_struct_property_is_set(op->ptr, "frame_end")==0)
        RNA_int_set(op->ptr, "frame_end", (int)mval_v2d[0] + 25); // XXX arbitary but ok for now.

    if (!(flag & SEQPROP_NOPATHS)) {
        sequencer_generic_invoke_path__internal(C, op, "filepath");
        sequencer_generic_invoke_path__internal(C, op, "directory");
    }
}

static void seq_load_operator_info(SeqLoadInfo *seq_load, wmOperator *op)
{
    int relative= RNA_struct_find_property(op->ptr, "relative_path") && RNA_boolean_get(op->ptr, "relative_path");
    int is_file= -1;
    memset(seq_load, 0, sizeof(SeqLoadInfo));

    seq_load->start_frame=  RNA_int_get(op->ptr, "frame_start");
    seq_load->end_frame=    seq_load->start_frame; /* un-set */

    seq_load->channel=      RNA_int_get(op->ptr, "channel");
    seq_load->len=          1; // images only, if endframe isnt set!

    if(RNA_struct_find_property(op->ptr, "filepath")) {
        RNA_string_get(op->ptr, "filepath", seq_load->path); /* full path, file is set by the caller */
        is_file= 1;
    } else if (RNA_struct_find_property(op->ptr, "directory")) {
        RNA_string_get(op->ptr, "directory", seq_load->path); /* full path, file is set by the caller */
        is_file= 0;
    }

    if((is_file != -1) && relative)
        BLI_path_rel(seq_load->path, G.main->name);

    
    if (RNA_struct_find_property(op->ptr, "frame_end")) {
        seq_load->end_frame = RNA_int_get(op->ptr, "frame_end");
    }

    if (RNA_struct_find_property(op->ptr, "replace_sel") && RNA_boolean_get(op->ptr, "replace_sel"))
        seq_load->flag |= SEQ_LOAD_REPLACE_SEL;

    if (RNA_struct_find_property(op->ptr, "cache") && RNA_boolean_get(op->ptr, "cache"))
        seq_load->flag |= SEQ_LOAD_SOUND_CACHE;

    if (RNA_struct_find_property(op->ptr, "sound") && RNA_boolean_get(op->ptr, "sound"))
        seq_load->flag |= SEQ_LOAD_MOVIE_SOUND;

    /* always use this for ops */
    seq_load->flag |= SEQ_LOAD_FRAME_ADVANCE;


    if(is_file==1) {
        BLI_strncpy(seq_load->name, BLI_path_basename(seq_load->path), sizeof(seq_load->name));
    }
    else if(RNA_struct_find_property(op->ptr, "files")) {
        /* used for image strip */
        /* best guess, first images name */
        RNA_BEGIN(op->ptr, itemptr, "files") {
            char *name= RNA_string_get_alloc(&itemptr, "name", NULL, 0);
            BLI_strncpy(seq_load->name, name, sizeof(seq_load->name));
            MEM_freeN(name);
            break;
        }
        RNA_END;
    }
}

/* add scene operator */
static int sequencer_add_scene_strip_exec(bContext *C, wmOperator *op)
{
    Scene *scene= CTX_data_scene(C);
    Editing *ed= seq_give_editing(scene, TRUE);
    
    Scene *sce_seq;

    Sequence *seq;  /* generic strip vars */
    Strip *strip;
    
    int start_frame, channel; /* operator props */
    
    start_frame= RNA_int_get(op->ptr, "frame_start");
    channel= RNA_int_get(op->ptr, "channel");
    
    sce_seq= BLI_findlink(&CTX_data_main(C)->scene, RNA_enum_get(op->ptr, "scene"));
    
    if (sce_seq==NULL) {
        BKE_report(op->reports, RPT_ERROR, "Scene not found");
        return OPERATOR_CANCELLED;
    }
    
    seq = alloc_sequence(ed->seqbasep, start_frame, channel);
    seq->type= SEQ_SCENE;
    seq->blend_mode= SEQ_CROSS; /* so alpha adjustment fade to the strip below */

    seq->scene= sce_seq;
    seq->sfra= sce_seq->r.sfra;
    
    /* basic defaults */
    seq->strip= strip= MEM_callocN(sizeof(Strip), "strip");
    strip->len = seq->len = sce_seq->r.efra - sce_seq->r.sfra + 1;
    strip->us= 1;
    
    strip->stripdata= MEM_callocN(seq->len*sizeof(StripElem), "stripelem");
    
    BLI_strncpy(seq->name+2, sce_seq->id.name+2, sizeof(seq->name)-2);
    seqbase_unique_name_recursive(&ed->seqbase, seq);

    seq->scene_sound = sound_scene_add_scene_sound(scene, seq, start_frame, start_frame + strip->len, 0);

    calc_sequence_disp(scene, seq);
    sort_seq(scene);
    
    if (RNA_boolean_get(op->ptr, "replace_sel")) {
        deselect_all_seq(scene);
        seq_active_set(scene, seq);
        seq->flag |= SELECT;
    }

    if(RNA_boolean_get(op->ptr, "overlap") == FALSE) {
        if(seq_test_overlap(ed->seqbasep, seq)) shuffle_seq(ed->seqbasep, seq, scene);
    }

    WM_event_add_notifier(C, NC_SCENE|ND_SEQUENCER, scene);
    
    return OPERATOR_FINISHED;
}


static int sequencer_add_scene_strip_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
    if(!ED_operator_sequencer_active(C)) {
        BKE_report(op->reports, RPT_ERROR, "Sequencer area not active");
        return OPERATOR_CANCELLED;
    }

    if(!RNA_struct_property_is_set(op->ptr, "scene"))
        return WM_enum_search_invoke(C, op, event);

    sequencer_generic_invoke_xy__internal(C, op, event, 0);
    return sequencer_add_scene_strip_exec(C, op);
    // needs a menu
    // return WM_menu_invoke(C, op, event);
}


void SEQUENCER_OT_scene_strip_add(struct wmOperatorType *ot)
{
    PropertyRNA *prop;
    
    /* identifiers */
    ot->name= "Add Scene Strip";
    ot->idname= "SEQUENCER_OT_scene_strip_add";
    ot->description= "Add a strip to the sequencer using a blender scene as a source";

    /* api callbacks */
    ot->invoke= sequencer_add_scene_strip_invoke;
    ot->exec= sequencer_add_scene_strip_exec;

    ot->poll= ED_operator_scene_editable;
    
    /* flags */
    ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
    
    sequencer_generic_props__internal(ot, SEQPROP_STARTFRAME);
    prop= RNA_def_enum(ot->srna, "scene", DummyRNA_NULL_items, 0, "Scene", "");
    RNA_def_enum_funcs(prop, RNA_scene_itemf);
    ot->prop= prop;
}

static int sequencer_add_generic_strip_exec(bContext *C, wmOperator *op, SeqLoadFunc seq_load_func)
{
    Scene *scene= CTX_data_scene(C); /* only for sound */
    Editing *ed= seq_give_editing(scene, TRUE);
    SeqLoadInfo seq_load;
    Sequence *seq;
    int tot_files;
    const short overlap= RNA_boolean_get(op->ptr, "overlap");

    seq_load_operator_info(&seq_load, op);

    if (seq_load.flag & SEQ_LOAD_REPLACE_SEL)
        deselect_all_seq(scene);

    tot_files= RNA_property_collection_length(op->ptr, RNA_struct_find_property(op->ptr, "files"));

    if(tot_files) {
        /* multiple files */
        char dir_only[FILE_MAX];
        char file_only[FILE_MAX];

        BLI_split_dir_part(seq_load.path, dir_only, sizeof(dir_only));

        RNA_BEGIN(op->ptr, itemptr, "files") {
            RNA_string_get(&itemptr, "name", file_only);
            BLI_join_dirfile(seq_load.path, sizeof(seq_load.path), dir_only, file_only);

            seq= seq_load_func(C, ed->seqbasep, &seq_load);

            if(overlap == FALSE) {
                if(seq_test_overlap(ed->seqbasep, seq)) shuffle_seq(ed->seqbasep, seq, scene);
            }
        }
        RNA_END;
    }
    else {
        /* single file */
        seq= seq_load_func(C, ed->seqbasep, &seq_load);

        if(overlap == FALSE) {
            if(seq_test_overlap(ed->seqbasep, seq)) shuffle_seq(ed->seqbasep, seq, scene);
        }
    }

    if (seq_load.tot_success==0) {
        BKE_reportf(op->reports, RPT_ERROR, "File \"%s\" could not be loaded", seq_load.path);
        return OPERATOR_CANCELLED;
    }

    sort_seq(scene);
    seq_update_muting(ed);

    WM_event_add_notifier(C, NC_SCENE|ND_SEQUENCER, scene);

    return OPERATOR_FINISHED;
}

/* add movie operator */
static int sequencer_add_movie_strip_exec(bContext *C, wmOperator *op)
{
    return sequencer_add_generic_strip_exec(C, op, sequencer_add_movie_strip);
}


static int sequencer_add_movie_strip_invoke(bContext *C, wmOperator *op, wmEvent *event)
{

    if(!ED_operator_sequencer_active(C)) {
        BKE_report(op->reports, RPT_ERROR, "Sequencer area not active");
        return OPERATOR_CANCELLED;
    }

    /* This is for drag and drop */
    if(RNA_collection_length(op->ptr, "files") || RNA_struct_property_is_set(op->ptr, "filepath")) {
        sequencer_generic_invoke_xy__internal(C, op, event, SEQPROP_NOPATHS);
        return sequencer_add_movie_strip_exec(C, op);
    }
    
    sequencer_generic_invoke_xy__internal(C, op, event, 0);
    
    WM_event_add_fileselect(C, op);
    return OPERATOR_RUNNING_MODAL;

    //return sequencer_add_movie_strip_exec(C, op);
}


void SEQUENCER_OT_movie_strip_add(struct wmOperatorType *ot)
{
    
    /* identifiers */
    ot->name= "Add Movie Strip";
    ot->idname= "SEQUENCER_OT_movie_strip_add";
    ot->description= "Add a movie strip to the sequencer";

    /* api callbacks */
    ot->invoke= sequencer_add_movie_strip_invoke;
    ot->exec= sequencer_add_movie_strip_exec;

    ot->poll= ED_operator_scene_editable;
    
    /* flags */
    ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
    
    WM_operator_properties_filesel(ot, FOLDERFILE|MOVIEFILE, FILE_SPECIAL, FILE_OPENFILE, WM_FILESEL_FILEPATH|WM_FILESEL_RELPATH|WM_FILESEL_FILES);
    sequencer_generic_props__internal(ot, SEQPROP_STARTFRAME);
    RNA_def_boolean(ot->srna, "sound", TRUE, "Sound", "Load sound with the movie");
}

/* add sound operator */

static int sequencer_add_sound_strip_exec(bContext *C, wmOperator *op)
{
    return sequencer_add_generic_strip_exec(C, op, sequencer_add_sound_strip);
}

static int sequencer_add_sound_strip_invoke(bContext *C, wmOperator *op, wmEvent *event)
{

    if(!ED_operator_sequencer_active(C)) {
        BKE_report(op->reports, RPT_ERROR, "Sequencer area not active");
        return OPERATOR_CANCELLED;
    }
    
    /* This is for drag and drop */
    if(RNA_collection_length(op->ptr, "files") || RNA_struct_property_is_set(op->ptr, "filepath")) {
        sequencer_generic_invoke_xy__internal(C, op, event, SEQPROP_NOPATHS);
        return sequencer_add_sound_strip_exec(C, op);
    }
    
    sequencer_generic_invoke_xy__internal(C, op, event, 0);

    WM_event_add_fileselect(C, op);
    return OPERATOR_RUNNING_MODAL;

    //return sequencer_add_sound_strip_exec(C, op);
}


void SEQUENCER_OT_sound_strip_add(struct wmOperatorType *ot)
{
    
    /* identifiers */
    ot->name= "Add Sound Strip";
    ot->idname= "SEQUENCER_OT_sound_strip_add";
    ot->description= "Add a sound strip to the sequencer";

    /* api callbacks */
    ot->invoke= sequencer_add_sound_strip_invoke;
    ot->exec= sequencer_add_sound_strip_exec;

    ot->poll= ED_operator_scene_editable;
    
    /* flags */
    ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
    
    WM_operator_properties_filesel(ot, FOLDERFILE|SOUNDFILE, FILE_SPECIAL, FILE_OPENFILE, WM_FILESEL_FILEPATH|WM_FILESEL_RELPATH|WM_FILESEL_FILES);
    sequencer_generic_props__internal(ot, SEQPROP_STARTFRAME);
    RNA_def_boolean(ot->srna, "cache", FALSE, "Cache", "Cache the sound in memory");
}

/* add image operator */
static int sequencer_add_image_strip_exec(bContext *C, wmOperator *op)
{
    /* cant use the generic function for this */

    Scene *scene= CTX_data_scene(C); /* only for sound */
    Editing *ed= seq_give_editing(scene, TRUE);
    SeqLoadInfo seq_load;
    Sequence *seq;

    Strip *strip;
    StripElem *se;

    seq_load_operator_info(&seq_load, op);

    /* images are unique in how they handle this - 1 per strip elem */
    seq_load.len= RNA_property_collection_length(op->ptr, RNA_struct_find_property(op->ptr, "files"));

    if(seq_load.len==0)
        return OPERATOR_CANCELLED;

    if(seq_load.flag & SEQ_LOAD_REPLACE_SEL)
        deselect_all_seq(scene);


    /* main adding function */
    seq= sequencer_add_image_strip(C, ed->seqbasep, &seq_load);
    strip= seq->strip;
    se= strip->stripdata;

    RNA_BEGIN(op->ptr, itemptr, "files") {
        char *filename= RNA_string_get_alloc(&itemptr, "name", NULL, 0);
        BLI_strncpy(se->name, filename, sizeof(se->name));
        MEM_freeN(filename);
        se++;
    }
    RNA_END;

    if(seq_load.len == 1) {
        if(seq_load.start_frame < seq_load.end_frame) {
            seq->endstill= seq_load.end_frame - seq_load.start_frame;
        }
    }
    
    calc_sequence_disp(scene, seq);

    sort_seq(scene);

    /* last active name */
    strncpy(ed->act_imagedir, strip->dir, FILE_MAXDIR-1);

    if(RNA_boolean_get(op->ptr, "overlap") == FALSE) {
        if(seq_test_overlap(ed->seqbasep, seq)) shuffle_seq(ed->seqbasep, seq, scene);
    }

    WM_event_add_notifier(C, NC_SCENE|ND_SEQUENCER, scene);

    return OPERATOR_FINISHED;
}

static int sequencer_add_image_strip_invoke(bContext *C, wmOperator *op, wmEvent *event)
{

    if(!ED_operator_sequencer_active(C)) {
        BKE_report(op->reports, RPT_ERROR, "Sequencer area not active");
        return OPERATOR_CANCELLED;
    }


    /* drag drop has set the names */
    if(RNA_collection_length(op->ptr, "files")) {
        sequencer_generic_invoke_xy__internal(C, op, event, SEQPROP_ENDFRAME|SEQPROP_NOPATHS);
        return sequencer_add_image_strip_exec(C, op);
    }
    
    sequencer_generic_invoke_xy__internal(C, op, event, SEQPROP_ENDFRAME);

    WM_event_add_fileselect(C, op);
    return OPERATOR_RUNNING_MODAL;
}


void SEQUENCER_OT_image_strip_add(struct wmOperatorType *ot)
{
    
    /* identifiers */
    ot->name= "Add Image Strip";
    ot->idname= "SEQUENCER_OT_image_strip_add";
    ot->description= "Add an image or image sequence to the sequencer";

    /* api callbacks */
    ot->invoke= sequencer_add_image_strip_invoke;
    ot->exec= sequencer_add_image_strip_exec;

    ot->poll= ED_operator_scene_editable;
    
    /* flags */
    ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
    
    WM_operator_properties_filesel(ot, FOLDERFILE|IMAGEFILE, FILE_SPECIAL, FILE_OPENFILE, WM_FILESEL_DIRECTORY|WM_FILESEL_RELPATH|WM_FILESEL_FILES);
    sequencer_generic_props__internal(ot, SEQPROP_STARTFRAME|SEQPROP_ENDFRAME);
}


/* add_effect_strip operator */
static int sequencer_add_effect_strip_exec(bContext *C, wmOperator *op)
{
    Scene *scene= CTX_data_scene(C);
    Editing *ed= seq_give_editing(scene, TRUE);

    Sequence *seq;  /* generic strip vars */
    Strip *strip;
    struct SeqEffectHandle sh;

    int start_frame, end_frame, channel, type; /* operator props */
    
    Sequence *seq1, *seq2, *seq3;
    const char *error_msg;

    start_frame= RNA_int_get(op->ptr, "frame_start");
    end_frame= RNA_int_get(op->ptr, "frame_end");
    channel= RNA_int_get(op->ptr, "channel");

    type= RNA_enum_get(op->ptr, "type");
    
    // XXX move to invoke
    if(!seq_effect_find_selected(scene, NULL, type, &seq1, &seq2, &seq3, &error_msg)) {
        BKE_report(op->reports, RPT_ERROR, error_msg);
        return OPERATOR_CANCELLED;
    }

    /* If seq1 is NULL and no error was rasied it means the seq is standalone
     * (like color strips) and we need to check its start and end frames are valid */
    if (seq1==NULL && end_frame <= start_frame) {
        BKE_report(op->reports, RPT_ERROR, "Start and end frame are not set");
        return OPERATOR_CANCELLED;
    }

    seq = alloc_sequence(ed->seqbasep, start_frame, channel);
    seq->type= type;

    BLI_strncpy(seq->name+2, give_seqname(seq), sizeof(seq->name)-2);
    seqbase_unique_name_recursive(&ed->seqbase, seq);

    sh = get_sequence_effect(seq);

    seq->seq1= seq1;
    seq->seq2= seq2;
    seq->seq3= seq3;

    sh.init(seq);

    if (!seq1) { /* effect has no deps */
        seq->len= 1;
        seq_tx_set_final_right(seq, end_frame);
    }

    seq->flag |= SEQ_USE_EFFECT_DEFAULT_FADE;

    calc_sequence(scene, seq);
    
    /* basic defaults */
    seq->strip= strip= MEM_callocN(sizeof(Strip), "strip");
    strip->len = seq->len;
    strip->us= 1;
    if(seq->len>0)
        strip->stripdata= MEM_callocN(seq->len*sizeof(StripElem), "stripelem");

    if (seq->type==SEQ_PLUGIN) {
        char path[FILE_MAX];
        RNA_string_get(op->ptr, "filepath", path);

        sh.init_plugin(seq, path);

        if(seq->plugin==NULL) {
            BLI_remlink(ed->seqbasep, seq);
            seq_free_sequence(scene, seq);
            BKE_reportf(op->reports, RPT_ERROR, "Sequencer plugin \"%s\" could not load", path);
            return OPERATOR_CANCELLED;
        }
    } else if (seq->type == SEQ_COLOR) {
        SolidColorVars *colvars= (SolidColorVars *)seq->effectdata;
        RNA_float_get_array(op->ptr, "color", colvars->col);
        seq->blend_mode= SEQ_CROSS; /* so alpha adjustment fade to the strip below */

    } else if (seq->type == SEQ_ADJUSTMENT) {
        seq->blend_mode= SEQ_CROSS;
    }

    /* an unset channel is a special case where we automatically go above
     * the other strips. */
    if(!RNA_struct_property_is_set(op->ptr, "channel")) {
        if(seq->seq1) {
            int chan= MAX3( seq->seq1 ? seq->seq1->machine : 0,
                            seq->seq2 ? seq->seq2->machine : 0,
                            seq->seq3 ? seq->seq3->machine : 0);
            if(chan < MAXSEQ)
                seq->machine= chan;
        }
    }

    if(RNA_boolean_get(op->ptr, "overlap") == FALSE) {
        if(seq_test_overlap(ed->seqbasep, seq)) shuffle_seq(ed->seqbasep, seq, scene);
    }

    update_changed_seq_and_deps(scene, seq, 1, 1); /* runs calc_sequence */


    /* not sure if this is needed with update_changed_seq_and_deps.
     * it was NOT called in blender 2.4x, but wont hurt */
    sort_seq(scene); 

    if (RNA_boolean_get(op->ptr, "replace_sel")) {
        deselect_all_seq(scene);
        seq_active_set(scene, seq);
        seq->flag |= SELECT;
    }

    WM_event_add_notifier(C, NC_SCENE|ND_SEQUENCER, scene);

    return OPERATOR_FINISHED;
}


/* add color */
static int sequencer_add_effect_strip_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
    short is_type_set= RNA_struct_property_is_set(op->ptr, "type");
    int type= -1;
    int prop_flag= SEQPROP_ENDFRAME;

    if(!ED_operator_sequencer_active(C)) {
        BKE_report(op->reports, RPT_ERROR, "Sequencer area not active");
        return OPERATOR_CANCELLED;
    }

    if(is_type_set) {
        type= RNA_enum_get(op->ptr, "type");

        /* when invoking an effect strip which uses inputs,
         * skip initialzing the channel from the mouse.
         * Instead leave the property unset so exec() initializes it to be
         * above the strips its applied to. */
        if(get_sequence_effect_num_inputs(type) != 0) {
            prop_flag |= SEQPROP_NOCHAN;
        }
    }

    sequencer_generic_invoke_xy__internal(C, op, event, prop_flag);

    if (is_type_set && type==SEQ_PLUGIN) {
        /* only plugins need the file selector */
        return WM_operator_filesel(C, op, event);
    }
    else {
        return sequencer_add_effect_strip_exec(C, op);
    }
}

void SEQUENCER_OT_effect_strip_add(struct wmOperatorType *ot)
{
    /* identifiers */
    ot->name= "Add Effect Strip";
    ot->idname= "SEQUENCER_OT_effect_strip_add";
    ot->description= "Add an effect to the sequencer, most are applied on top of existing strips";

    /* api callbacks */
    ot->invoke= sequencer_add_effect_strip_invoke;
    ot->exec= sequencer_add_effect_strip_exec;

    ot->poll= ED_operator_scene_editable;
    
    /* flags */
    ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
    
    WM_operator_properties_filesel(ot, 0, FILE_SPECIAL, FILE_OPENFILE, WM_FILESEL_FILEPATH|WM_FILESEL_RELPATH);
    sequencer_generic_props__internal(ot, SEQPROP_STARTFRAME|SEQPROP_ENDFRAME);
    RNA_def_enum(ot->srna, "type", sequencer_prop_effect_types, SEQ_CROSS, "Type", "Sequencer effect type");
    RNA_def_float_vector(ot->srna, "color", 3, NULL, 0.0f, 1.0f, "Color", "Initialize the strip with this color (only used when type='COLOR')", 0.0f, 1.0f);
}