lqt_qtvr.c

这个库实现了录象功能

        file->qtvr_node[0].obji.defaultTilt = deftilt;
    }
    else {
        file->moov.udta.navg.startHPan = mintilt;
        file->moov.udta.navg.endHPan = maxtilt;
        file->moov.udta.navg.initialHPan = deftilt;
    }
}

/* FOV  "Zoom" */
void lqt_qtvr_get_fov(quicktime_t  *file, float *minfov, float *maxfov, float *deffov)
{
    if (lqt_qtvr_get_qtvr_track(file) >= 0 ) {
        if (lqt_qtvr_get_object_track(file) >= 0) {
            if (minfov != NULL ) *minfov = file->qtvr_node[0].obji.minFOV;
            if (maxfov != NULL ) *maxfov = file->qtvr_node[0].obji.FOV;
            if (deffov != NULL ) *deffov = file->qtvr_node[0].obji.defaultFOV;
        }
        else if (lqt_qtvr_get_panorama_track(file) >= 0) {
            if (minfov != NULL) *minfov = file->qtvr_node[0].pdat.minFOV;
            if (maxfov != NULL) *maxfov = file->qtvr_node[0].pdat.maxFOV;
            if (deffov != NULL) *deffov = file->qtvr_node[0].pdat.defaultFOV;
        }
    }
    else {
        if (lqt_is_qtvr(file) == QTVR_OBJ) {
            if (minfov != NULL ) *minfov = file->moov.udta.navg.fieldofview;
            if (maxfov != NULL ) *maxfov = file->moov.udta.navg.fieldofview;
            if (deffov != NULL ) *deffov = file->moov.udta.navg.fieldofview;
        }
        else if (lqt_is_qtvr(file) == QTVR_PAN) {
            if (minfov != NULL ) *minfov = file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.MinZoom;
            if (maxfov != NULL ) *maxfov = file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.MaxZoom;
            if (deffov != NULL ) *deffov = file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.MinZoom;
        }
    }
}

void lqt_qtvr_set_fov(quicktime_t  *file, float minfov, float maxfov, float deffov)
{
    if (lqt_qtvr_get_object_track(file) >= 0) {
        file->qtvr_node[0].obji.minFOV = minfov;
        file->qtvr_node[0].obji.FOV = maxfov;
        file->qtvr_node[0].obji.defaultFOV = deffov;
    }
    else {
        file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.MinZoom = minfov;
        file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.MaxZoom = maxfov;
    }
}

/* frame to start at */
int lqt_qtvr_get_initial_position(quicktime_t  *file)
{
    if (lqt_qtvr_get_object_track(file) >= 0) {
        return deg2frame(file, file->qtvr_node[0].obji.defaultPan, file->qtvr_node[0].obji.defaultTilt);
    }
    else {
        return deg2frame(file, file->moov.udta.navg.initialHPan, file->moov.udta.navg.initialVPan);
    }

    return -1;
}

/* movietype */
int lqt_qtvr_get_movietype(quicktime_t  *file)
{
    if (lqt_qtvr_get_object_track(file) >= 0) {
        return file->qtvr_node[0].obji.movieType;
    }
    else {
        return file->moov.udta.navg.movietype;
    }
}

int lqt_qtvr_set_movietype(quicktime_t  *file, int movietype)
{
    if (movietype == QTVR_GRABBER_SCROLLER_UI || 
        movietype == QTVR_OLD_JOYSTICK_UI || 
        movietype == QTVR_JOYSTICK_UI || 
        movietype == QTVR_GRABBER_UI || 
        movietype == QTVR_ABSOLUTE_UI) {
        if (lqt_qtvr_get_object_track(file) >= 0) {
            file->qtvr_node[0].obji.movieType = movietype;
        }
        else {
            file->moov.udta.navg.movietype = movietype;
        }
        return 0;
    }

    return -1;
}

/* Set number of rows */
int lqt_qtvr_set_rows(quicktime_t  *file, int rows)
{
    if (rows > 0) {
        if (lqt_is_qtvr(file) == QTVR_OBJ) {
            file->qtvr_node[0].obji.rows = rows;
            return 0;
        }
        else if (lqt_is_qtvr(file) == QTVR_PAN) {
            file->qtvr_node[0].pdat.imageNumFramesX = rows;
            return 0;
        }
    }
    
    return -1;
}

/* Set number of columns */
int lqt_qtvr_set_columns(quicktime_t  *file, int columns)
{
    if (columns > 0) {
        if (lqt_is_qtvr(file) == QTVR_OBJ) {
            file->qtvr_node[0].obji.columns = columns;
            return 0;
        }
        else if (lqt_is_qtvr(file) == QTVR_PAN) {
            file->qtvr_node[0].pdat.imageNumFramesY = columns;
            return 0;
        }
    }
    
    return -1;
}

/* dimensions of the player window */
int lqt_qtvr_get_display_width(quicktime_t  *file)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        return quicktime_video_width(file, 0);
    }
    else if (lqt_is_qtvr(file) == QTVR_PAN) {
        return (int)file->moov.trak[lqt_qtvr_get_panorama_track(file)]->tkhd.track_width;
    }

    return -1;
}

int lqt_qtvr_set_display_width(quicktime_t  *file, int width)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        file->moov.trak[lqt_qtvr_get_qtvr_track(file)]->tkhd.track_width = (float)width;
        file->moov.trak[lqt_qtvr_get_object_track(file)]->tkhd.track_width = (float)width;
    }
    else if (lqt_is_qtvr(file) == QTVR_PAN) {
        file->moov.trak[lqt_qtvr_get_panorama_track(file)]->tkhd.track_width = (float)width;
    }

    return -1;
}

int lqt_qtvr_get_display_height(quicktime_t  *file)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        return quicktime_video_height(file, 0);
    }
    else if (lqt_is_qtvr(file) == QTVR_PAN) {
        return (int)file->moov.trak[lqt_qtvr_get_panorama_track(file)]->tkhd.track_height;
    }

    return -1;
}


int lqt_qtvr_set_display_height(quicktime_t *file, int height)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        file->moov.trak[lqt_qtvr_get_qtvr_track(file)]->tkhd.track_height = height;
        file->moov.trak[lqt_qtvr_get_object_track(file)]->tkhd.track_height = height;
    }
    else if (lqt_is_qtvr(file) == QTVR_PAN) {
        file->moov.trak[lqt_qtvr_get_panorama_track(file)]->tkhd.track_height = height;
    }

    return -1;
}

/* get depth */
int lqt_qtvr_get_depth(quicktime_t  *file)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        return quicktime_video_depth(file, 0);
    }
    else if (lqt_is_qtvr(file) == QTVR_PAN) { // add v2
        return (int)file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.SDepth;
    }

    return -1;
}

/* get/set full pano dimensions */
int lqt_qtvr_get_width(quicktime_t  *file)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        return quicktime_video_width(file, 0);
    }
    else
    if (lqt_is_qtvr(file) == QTVR_PAN) {
        if (lqt_qtvr_get_qtvr_track(file) >= 0) {
            if (lqt_qtvr_get_panotype(file) == QTVR_PANO_HORZ) { 
                return file->qtvr_node[0].pdat.imageSizeX;
            }
            else {
                return file->qtvr_node[0].pdat.imageSizeY;
            }
        }
        else {
            return file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.SWidth;
        }
    }

    return -1;
}

int lqt_qtvr_get_height(quicktime_t  *file)
{
    if (lqt_is_qtvr(file) == QTVR_OBJ) {
        return quicktime_video_height(file, 0);
    }
    else if (lqt_is_qtvr(file) == QTVR_PAN) {
        if (lqt_qtvr_get_qtvr_track(file) >= 0) {
            if (lqt_qtvr_get_panotype(file) == QTVR_PANO_HORZ) { 
                return file->qtvr_node[0].pdat.imageSizeY;
            }
            else {
                return file->qtvr_node[0].pdat.imageSizeX;
            }
        }
        else {
            return file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.SHeight;
        }
    }

    return -1;
}


/* Panorama specific */
int lqt_qtvr_get_panorama_track(quicktime_t  *file)
{
    int i;
    for(i = 0; i < file->moov.total_tracks; i++) {
        if (quicktime_match_32(file->moov.trak[i]->mdia.hdlr.component_subtype, "STpn")) {
            return i;
        }
        if (quicktime_match_32(file->moov.trak[i]->mdia.hdlr.component_subtype, "pano")) {
            return i;
        }
    }
    return -1;
}


int lqt_qtvr_get_panotype(quicktime_t  *file)
{
    if (lqt_is_qtvr(file) == QTVR_PAN) {
        if (lqt_qtvr_get_qtvr_track(file) >= 0 &&
            quicktime_match_32(file->qtvr_node[0].pdat.panoType, "hcyl")) {
            return QTVR_PANO_HORZ;
        }
        return QTVR_PANO_VERT;
    }

    return -1;
}


/* object specific */
int lqt_qtvr_get_object_track(quicktime_t  *file)
{
    int i;
    for(i = 0; i < file->moov.total_tracks; i++) {
        if (quicktime_match_32(file->moov.trak[i]->mdia.hdlr.component_subtype, "obje")) {
            return i;
        }
    }

    return -1;
}

/* get qtvr track */
int lqt_qtvr_get_qtvr_track(quicktime_t  *file)
{
    int i;
    for(i = 0; i < file->moov.total_tracks; i++) {
        if (quicktime_match_32(file->moov.trak[i]->mdia.hdlr.component_subtype, "qtvr")) {
            return i;
        }
    }

    return -1;
}

/* set/get image track */
int lqt_qtvr_set_image_track(quicktime_t  *file, int track)
{
    if (lqt_qtvr_get_object_track(file) >= 0) {
        int otrack = lqt_qtvr_get_object_track(file);
        if (otrack != -1 && file->total_vtracks > track) {	    
            file->moov.trak[otrack]->tref.references[0].tracks[0] =
                  file->vtracks[track].track->tkhd.track_id;
            return 0;
        }
    }
    else {
        int ptrack = lqt_qtvr_get_panorama_track(file);
        if (ptrack != -1 && file->total_vtracks > track) {
            /* reset the prevous vtracks flags if required */
            if (file->moov.trak[ptrack]->mdia.minf.stbl.stsd.table->pano.STrack != 0) 
                file->moov.trak[lqt_track_from_id(file, file->moov.trak[ptrack]->mdia.minf.stbl.stsd.table->pano.STrack)]->tkhd.flags = 15;

            file->moov.trak[ptrack]->mdia.minf.stbl.stsd.table->pano.STrack = file->vtracks[track].track->tkhd.track_id;
            file->vtracks[track].track->tkhd.flags = 14; /* deactivate this vtrack */
            return 0;
        }
    }

    return -1;
}

// This will not work correctly with movies that contain panos and obj movies in the same file
// possibly replace with _get_object_image_track() and _get_pano_image_track()
int lqt_qtvr_get_image_track(quicktime_t  *file)
{
    if (lqt_qtvr_get_qtvr_track(file) >= 0) {
        if (lqt_qtvr_get_object_track(file) != -1) {
            return file->moov.trak[lqt_qtvr_get_object_track(file)]->tref.references[0].tracks[0];
        } 
        else if (lqt_qtvr_get_panorama_track(file) != -1) {
            return file->qtvr_node[0].pdat.imageRefTrackIndex;
        }
    }
    else {
        if (lqt_qtvr_get_panorama_track(file) != -1) {
            return file->moov.trak[lqt_qtvr_get_panorama_track(file)]->mdia.minf.stbl.stsd.table->pano.STrack;
        }
    }

    return -1;
}

/* get track by track id */
int lqt_track_from_id(quicktime_t *file, int track_id)
{
    int i;
    for(i = 0; i < file->moov.total_tracks; i++) {
        if (file->moov.trak[i]->tkhd.track_id == track_id ) return i;
    }
    return -1;
}