llviewerparcelmediaautoplay.cpp

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#include "llviewerprecompiledheaders.h"
#include "llviewerparcelmediaautoplay.h"
#include "llviewerparcelmedia.h"
#include "llviewercontrol.h"
#include "llviewermedia.h"
#include "llparcel.h"
#include "llviewerparcelmgr.h"
#include "lluuid.h"
#include "message.h"
#include "llviewerimagelist.h"         // for texture stats
#include "llagent.h"

const F32 AUTOPLAY_TIME  = 5;          // how many seconds before we autoplay
const F32 AUTOPLAY_SIZE  = 24*24;      // how big the texture must be (pixel area) before we autoplay
const F32 AUTOPLAY_SPEED = 0.1f;        // how slow should the agent be moving to autoplay

LLViewerParcelMediaAutoPlay::LLViewerParcelMediaAutoPlay() :
        LLEventTimer(1),
        mPlayed(FALSE),
        mTimeInParcel(0)
{
}

static LLViewerParcelMediaAutoPlay *sAutoPlay = NULL;

// static
void LLViewerParcelMediaAutoPlay::initClass()
{
        if (!sAutoPlay)
                sAutoPlay = new LLViewerParcelMediaAutoPlay;
}

// static
void LLViewerParcelMediaAutoPlay::cleanupClass()
{
        if (sAutoPlay)
                delete sAutoPlay;
}

// static
void LLViewerParcelMediaAutoPlay::playStarted()
{
        if (sAutoPlay)
        {
                sAutoPlay->mPlayed = TRUE;
        }
}

BOOL LLViewerParcelMediaAutoPlay::tick()
{
        LLParcel *this_parcel = NULL;
        std::string this_media_url;
        LLUUID this_media_texture_id;
        S32 this_parcel_id = 0;

        this_parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();

        if (this_parcel)
        {
                this_media_url = std::string(this_parcel->getMediaURL());

                this_media_texture_id = this_parcel->getMediaID();

                this_parcel_id = this_parcel->getLocalID();
        }

        if (this_parcel_id != mLastParcelID)
        {
                // we've entered a new parcel
                mPlayed    = FALSE;                   // we haven't autoplayed yet
                mTimeInParcel = 0;                    // reset our timer
                mLastParcelID = this_parcel_id;
        }

        mTimeInParcel += mPeriod;                 // increase mTimeInParcel by the amount of time between ticks

        if ((!mPlayed) &&                         // if we've never played
                (mTimeInParcel > AUTOPLAY_TIME) &&    // and if we've been here for so many seconds
                (this_media_url.size() != 0) &&       // and if the parcel has media
                (!LLViewerMedia::isMediaPlaying()))   // and if the media is not already playing
        {
                if (this_media_texture_id.notNull())  // and if the media texture is good
                {
                        LLViewerImage *image = gImageList.getImage(this_media_texture_id, FALSE);

                        F32 image_size = 0;

                        if (image)
                        {
                                image_size = image->mMaxVirtualSize;
                        }

                        if (gAgent.getVelocity().magVec() < AUTOPLAY_SPEED) // and if the agent is stopped (slow enough)
                        {
                                if (image_size > AUTOPLAY_SIZE)    // and if the target texture is big enough on screen
                                {
                                        if (this_parcel)
                                        {
                                                if (gSavedSettings.getBOOL("ParcelMediaAutoPlayEnable"))
                                                {
                                                        // and last but not least, only play when autoplay is enabled
                                                        LLViewerParcelMedia::play(this_parcel);
                                                }
                                        }

                                        mPlayed = TRUE;
                                }
                        }
                }
        }


        return FALSE; // continue ticking forever please.
}

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