lsr_enc.c

一个用于智能手机的多媒体库适合S60 WinCE的跨平台开发库

			GF_LSR_WRITE_INT(lsr, LSR_EVT_mousemove, 6, "event"); break;		
		case GF_EVENT_MOUSEOUT: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_mouseout, 6, "event"); break;
		case GF_EVENT_MOUSEOVER: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_mouseover, 6, "event"); break;
		case GF_EVENT_MOUSEUP: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_mouseup, 6, "event"); break;
		case GF_EVENT_PAUSE: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_pause, 6, "event"); break;
		case GF_EVENT_PAUSED_EVENT: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_pausedEvent, 6, "event"); break;
		case GF_EVENT_PLAY: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_play, 6, "event"); break;
		case GF_EVENT_REPEAT_EVENT: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_repeatEvent, 6, "event"); break;
		case GF_EVENT_REPEAT_KEY: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_repeatKey, 6, "event"); break;
		case GF_EVENT_RESIZE: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_resize, 6, "event"); break;
		case GF_EVENT_RESUME_EVENT: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_resumedEvent, 6, "event"); break;
		case GF_EVENT_SCROLL: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_scroll, 6, "event"); break;
		case GF_EVENT_SHORT_ACCESSKEY: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_shortAccessKey, 6, "event"); break;
		case GF_EVENT_TEXTINPUT: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_textinput, 6, "event"); break;
		case GF_EVENT_UNLOAD: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_unload, 6, "event"); break;
		case GF_EVENT_ZOOM: 
			GF_LSR_WRITE_INT(lsr, LSR_EVT_zoom, 6, "event"); break;
		default:
			GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[LASeR] Unsupported LASER event %d\n", evtType) );
			GF_LSR_WRITE_INT(lsr, 0, 6, "event"); break;
			return;
		}
		switch (evtType) {
		case GF_EVENT_KEYDOWN:
			if (!evtParam) break;
		case GF_EVENT_LONGKEYPRESS:
		case GF_EVENT_REPEAT_KEY:
		case GF_EVENT_SHORT_ACCESSKEY:
			lsr_write_vluimsbf5(lsr, dom_to_lsr_key(evtParam), "keyCode");
			break;
		}
	}
}

static void lsr_write_smil_time(GF_LASeRCodec *lsr, SMIL_Time *t)
{
	s32 now;
	if (t->type==GF_SMIL_TIME_EVENT) {
		GF_LSR_WRITE_INT(lsr, 1, 1, "hasEvent");
		if (t->element && gf_node_get_id((GF_Node*)t->element) ) {
			XMLRI iri;
			GF_LSR_WRITE_INT(lsr, 1, 1, "hasIdentifier");
			iri.string = NULL;
			iri.type = XMLRI_ELEMENTID;
			iri.target =  t->element;
			lsr_write_codec_IDREF(lsr, &iri, "idref");
		} else {
			GF_LSR_WRITE_INT(lsr, 0, 1, "hasIdentifier");
		}
		lsr_write_event_type(lsr, t->event.type, t->event.parameter);
	} else {
		GF_LSR_WRITE_INT(lsr, 0, 1, "hasEvent");
	}
	if (!t->clock) {
		GF_LSR_WRITE_INT(lsr, 0, 1, "hasClock");
		return;
	}
	GF_LSR_WRITE_INT(lsr, 1, 1, "hasClock");

	now = (s32) (t->clock * lsr->time_resolution);
	if (now<0) {
		now = -now;
		GF_LSR_WRITE_INT(lsr, 1, 1, "sign");
	} else {
		GF_LSR_WRITE_INT(lsr, 0, 1, "sign");
	}
	lsr_write_vluimsbf5(lsr, now, "value");
}


static void lsr_write_smil_times(GF_LASeRCodec *lsr, GF_List **l, const char *name, Bool skipable)
{
	SMIL_Time *v;
	u32 r_count, i, count;
	Bool indef = 0;

	count = l ? gf_list_count(*l) : 0;

	r_count = 0;
	for (i=0; i<count; i++) {
		v = (SMIL_Time*)gf_list_get(*l, i);
		if (v->type==GF_SMIL_TIME_INDEFINITE) {
			indef = 1;
			break;
		}
		else if (v->type!=GF_SMIL_TIME_EVENT_RESOLVED) r_count++;
	}
	if (skipable && !r_count && !indef) {
		GF_LSR_WRITE_INT(lsr, 0, 1, name);
		return;
	}
	if (skipable) GF_LSR_WRITE_INT(lsr, 1, 1, name);
	GF_LSR_WRITE_INT(lsr, indef, 1, "choice");
	if (indef) return;
	lsr_write_vluimsbf5(lsr, r_count, "count");
	for (i=0; i<count; i++) {
		v = (SMIL_Time*)gf_list_get(*l, i);
		lsr_write_smil_time(lsr, v);
	}
}

static void lsr_write_duration_ex(GF_LASeRCodec *lsr, SMIL_Duration *v, const char *name, Bool skipable)
{
	if (skipable) {
		if (!v || !v->type) {
			GF_LSR_WRITE_INT(lsr, 0, 1, name);
			return;
		}
		GF_LSR_WRITE_INT(lsr, 1, 1, name);
	}

	if (v->type==SMIL_DURATION_DEFINED) {
		s32 now = (s32) (v->clock_value * lsr->time_resolution);
		GF_LSR_WRITE_INT(lsr, 0, 1, "choice");
		GF_LSR_WRITE_INT(lsr, (now<0) ? 1 : 0, 1, "sign");
		if (now<0) now = -now;
		lsr_write_vluimsbf5(lsr, now, "value");
	} else {
		GF_LSR_WRITE_INT(lsr, 1, 1, "choice");
		GF_LSR_WRITE_INT(lsr, v->type, 2, "time");
	}
}
#define lsr_write_duration(a, b, c) lsr_write_duration_ex(a, b, c, 1)

static void lsr_write_focus(GF_LASeRCodec *lsr, SVG_Focus *foc, const char *name)
{
	if (foc->type==SVG_FOCUS_IRI) {
		GF_LSR_WRITE_INT(lsr, 0, 1, "isEnum");
		lsr_write_codec_IDREF(lsr, &foc->target, "id");
	} else {
		GF_LSR_WRITE_INT(lsr, 1, 1, "isEnum");
		GF_LSR_WRITE_INT(lsr, foc->type, 1, "enum");
	}
}

static Bool lsr_elt_has_same_base(GF_LASeRCodec *lsr, SVGAllAttributes *atts, SVG_Element *base, Bool *same_fill, Bool *same_stroke, Bool no_stroke_check)
{
	SVGAllAttributes base_atts;
	GF_FieldInfo info, base_info;

	if (same_stroke) *same_stroke = 0;
	if (same_fill) *same_fill = 0;

	if (!base) return 0;

	gf_svg_flatten_attributes(base, &base_atts);
	if (atts->externalResourcesRequired != base_atts.externalResourcesRequired) return 0;

	info.fieldType = base_info.fieldType = SVG_Paint_datatype;
	info.far_ptr = atts->stroke;
	base_info.far_ptr = base_atts.stroke;
	/*check stroke color*/
	if (!gf_svg_attributes_equal(&info, &base_info)) {
		if (!no_stroke_check) return 0;
	} else {
		if (same_stroke) *same_stroke = 1;
	}
	if (same_fill) {
		info.fieldType = base_info.fieldType = SVG_Paint_datatype;
		info.far_ptr = atts->fill;
		base_info.far_ptr = base_atts.fill;
		/*check stroke color*/
		*same_fill = gf_svg_attributes_equal(&info, &base_info) ? 1 : 0;
	}

	switch (gf_node_get_tag((GF_Node*) base)) {
	/*check path length*/
	case TAG_SVG_path:
		info.fieldType = base_info.fieldType = SVG_Number_datatype;
		info.far_ptr = atts->pathLength;
		base_info.far_ptr = base_atts.pathLength;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;
		break;
	/*check rx and ry for rect*/
	case TAG_SVG_rect:
		info.fieldType = base_info.fieldType = SVG_Length_datatype;
		info.far_ptr = atts->rx;
		base_info.far_ptr = base_atts.rx;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;
		
		info.fieldType = base_info.fieldType = SVG_Length_datatype;
		info.far_ptr = atts->ry;
		base_info.far_ptr = base_atts.ry;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;
		break;
	/*check x and y for use*/
	case TAG_SVG_use:
		info.fieldType = base_info.fieldType = SVG_Coordinate_datatype;
		info.far_ptr = atts->x;
		base_info.far_ptr = base_atts.x;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;
		
		info.fieldType = base_info.fieldType = SVG_Coordinate_datatype;
		info.far_ptr = atts->y;
		base_info.far_ptr = base_atts.y;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;
		break;
	/*check editable and rotate for text*/
	case TAG_SVG_text:
		info.fieldType = base_info.fieldType = SVG_Boolean_datatype;
		info.far_ptr = atts->editable;
		base_info.far_ptr = base_atts.editable;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;

		info.fieldType = base_info.fieldType = SVG_Numbers_datatype;
		info.far_ptr = atts->text_rotate;
		base_info.far_ptr = base_atts.text_rotate;
		if (!gf_svg_attributes_equal(&info, &base_info)) return 0;
		break;
	}

	return gf_lsr_same_rare(atts, &base_atts);
}

static Bool lsr_float_list_equal(GF_List *l1, GF_List *l2)
{
	u32 i, count = gf_list_count(l1);
	if (count != gf_list_count(l2)) return 0;
	for (i=0;i<count;i++) {
		Fixed *v1 = (Fixed *)gf_list_get(l1, i);
		Fixed *v2 = (Fixed *)gf_list_get(l2, i);
		if (*v1 != *v2) return 0;
	}
	return 1;
}

static void lsr_write_rare(GF_LASeRCodec *lsr, GF_Node *n)
{
	u32 i, nb_rare;
	s32 field_rare;
	SVGAttribute *att;

	nb_rare = 0;
	att = ((SVG_Element*)n)->attributes;
	while (att) {
		field_rare = gf_lsr_rare_type_from_attribute(att->tag);
		if (field_rare>=0) nb_rare++;
		att = att->next;
	}

	GF_LSR_WRITE_INT(lsr, nb_rare ? 1 : 0, 1, "has_rare");
	if (!nb_rare) return;

	GF_LSR_WRITE_INT(lsr, nb_rare, 6, "nbOfAttributes");

	att = ((SVG_Element*)n)->attributes;
	while (att) {
		field_rare = gf_lsr_rare_type_from_attribute(att->tag);
		if (field_rare==-1) {
			att = att->next;
			continue;
		}
		/*RARE extension*/
		if (field_rare==49) {
			Bool is_string = 0;
			u32 size, cur_bits;
			u32 len = 2+3;
			switch (att->tag) {
			case TAG_SVG_ATT_syncMaster: len +=1; break;
			case TAG_SVG_ATT_requiredFonts: 
				len += 8*strlen(*(SVG_String*)att->data);
				/*get vluimsbf5 field size with one extra word (4 bits, enough to code string alignment)*/
				size = lsr_get_vluimsbf5_size(len, 1);
				cur_bits = gf_bs_get_bit_position(lsr->bs) + lsr->info->cfg.extensionIDBits + size + 5;
				/*count string alignment*/
				while (cur_bits%8) {
					len++;
					cur_bits++;
				}
				is_string = 1;
				break;
			default: len +=2; break;
			}
			GF_LSR_WRITE_INT(lsr, 49, 6, "attributeRARE");
			GF_LSR_WRITE_INT(lsr, 2, lsr->info->cfg.extensionIDBits, "extensionID");
			if (is_string) {
				lsr_write_vluimsbf5_ex(lsr, len, 1, "len");
			} else {
				lsr_write_vluimsbf5(lsr, len, "len");
			}
			GF_LSR_WRITE_INT(lsr, 1, 2, "nbOfAttributes");
	
			switch (att->tag) {
			case TAG_SVG_ATT_syncMaster: 
				GF_LSR_WRITE_INT(lsr, 0, 3, "attributeRARE");
				GF_LSR_WRITE_INT(lsr, *(SVG_Boolean *)att->data ? 1 : 0, 1, "syncMaster");
				break;
			case TAG_SVG_ATT_focusHighlight: 
				GF_LSR_WRITE_INT(lsr, 1, 3, "attributeRARE");
				GF_LSR_WRITE_INT(lsr, *(SVG_FocusHighlight*)att->data, 2, "focusHighlight");
				break;
			case TAG_SVG_ATT_initialVisibility: 
				GF_LSR_WRITE_INT(lsr, 2, 3, "attributeRARE");
				GF_LSR_WRITE_INT(lsr, *(SVG_InitialVisibility*)att->data, 2, "initialVisibility");
				break;
			case TAG_SVG_ATT_fullscreen: 
				GF_LSR_WRITE_INT(lsr, 3, 3, "attributeRARE");
				GF_LSR_WRITE_INT(lsr, *(SVG_Boolean *)att->data ? 1 : 0, 2, "fullscreen");
				break;
			case TAG_SVG_ATT_requiredFonts: 
				GF_LSR_WRITE_INT(lsr, 4, 3, "attributeRARE");
				lsr_write_byte_align_string(lsr, *(SVG_String*)att->data, "requiredFonts");
				break;
			}
			GF_LSR_WRITE_INT(lsr, 0, 1, "hasNextExtension");
			att = att->next;
			continue;
		}
	
		GF_LSR_WRITE_INT(lsr, (u32)field_rare, 6, "attributeRARE");
		switch (att->tag) {
		case TAG_SVG_ATT__class: lsr_write_byte_align_string(lsr, *(SVG_String *)att->data, "class"); break;

		case TAG_SVG_ATT_audio_level: lsr_write_fixed_clamp(lsr, ((SVG_Number *) att->data)->value, "audio-level"); break;
	    case TAG_SVG_ATT_color: lsr_write_paint(lsr, (SVG_Paint*) att->data, "color"); break;
		case TAG_SVG_ATT_color_rendering: GF_LSR_WRITE_INT(lsr, *(SVG_RenderingHint*)att->data, 2, "color-rendering"); break;
		case TAG_SVG_ATT_display: GF_LSR_WRITE_INT(lsr, *(SVG_Display*)att->data, 5, "display"); break;
	    case TAG_SVG_ATT_display_align: GF_LSR_WRITE_INT(lsr, *(SVG_DisplayAlign*)att->data, 3, "display-align"); break;
		case TAG_SVG_ATT_fill_opacity: lsr_write_fixed_clamp(lsr, ((SVG_Number *)att->data)->value, "fill-opacity"); break;
	    case TAG_SVG_ATT_fill_rule: GF_LSR_WRITE_INT(lsr, *(SVG_FillRule*)att->data, 2, "fill-rule"); break;
		case TAG_SVG_ATT_image_rendering: GF_LSR_WRITE_INT(lsr, *(SVG_RenderingHint*)att->data, 2, "image-rendering"); break;
		case TAG_SVG_ATT_line_increment: lsr_write_line_increment_type(lsr, (SVG_Number*)att->data, "lineIncrement"); break;
	    case TAG_SVG_ATT_pointer_events: GF_LSR_WRITE_INT(lsr, *(SVG_PointerEvents*)att->data, 4, "pointer-events"); break;
		case TAG_SVG_ATT_shape_rendering: GF_LSR_WRITE_INT(lsr, *(SVG_RenderingHint*)att->data, 3, "shape-rendering"); break;
	    case TAG_SVG_ATT_solid_color: lsr_write_paint(lsr, (SVG_Paint*)att->data, "solid-color"); break;
		case TAG_SVG_ATT_solid_opacity: lsr_write_fixed_clamp(lsr, ((SVG_Number *)att->data)->value, "solid-opacity"); break;
	    case TAG_SVG_ATT_stop_color: lsr_write_paint(lsr, (SVG_Paint*)att->data, "stop-color"); break;
		case TAG_SVG_ATT_stop_opacity: lsr_write_fixed_clamp(lsr, ((SVG_Number *)att->data)->value, "stop-opacity"); break;
		case TAG_SVG_ATT_stroke_dasharray:  
		{
			u32 j;
			SVG_StrokeDashArray *da = (SVG_StrokeDashArray*)att->data;
			if (da->type==SVG_STROKEDASHARRAY_INHERIT) {
				GF_LSR_WRITE_INT(lsr, 1, 1, "dashArray");
			} else {
				GF_LSR_WRITE_INT(lsr, 0, 1, "dashArray");
				lsr_write_vluimsbf5(lsr, da->array.count, "len");
		        for (j=0; j<da->array.count; j++) {
		            lsr_write_fixed_16_8(lsr, da->array.vals[j], "dash");
				}
			}
		}
			break;
		case TAG_SVG_ATT_stroke_dashoffset: 
			lsr_write_fixed_16_8i(lsr, (SVG_Number*)att->data, "dashOffset"); break;

		case TAG_SVG_ATT_stroke_linecap: GF_LSR_WRITE_INT(lsr, *(SVG_StrokeLineCap*)att->data, 2, "stroke-linecap"); break;
		case TAG_SVG_ATT_stroke_linejoin: GF_LSR_WRITE_INT(lsr, *(SVG_StrokeLineJoin*)att->data, 2, "stroke-linejoin"); break;
		case TAG_SVG_ATT_stroke_miterlimit: lsr_write_fixed_16_8i(lsr, (SVG_Number*)att->data, "miterLimit"); break;
		case TAG_SVG_ATT_stroke_opacity: lsr_write_fixed_clamp(lsr, ((SVG_Number *)att->data)->value, "stroke-opacity"); break;
		case TAG_SVG_ATT_stroke_width: lsr_write_fixed_16_8i(lsr, (SVG_Number*)att->data, "strokeWidth"); break;
		case TAG_SVG_ATT_text_anchor: GF_LSR_WRITE_INT(lsr, *(SVG_TextAnchor*)att->data, 2, "text-achor"); break;
		case TAG_SVG_ATT_text_rendering: GF_LSR_WRITE_INT(lsr, *(SVG_RenderingHint*)att->data, 3, "text-rendering"); break;
		case TAG_SVG_ATT_viewport_fill: lsr_write_paint(lsr, (SVG_Paint*)att->data, "viewport-fill"); break;
		case TAG_SVG_ATT_viewport_fill_opacity: lsr_write_fixed_clamp(lsr, ((SVG_Number *)att->data)->value, "viewport-fill-opacity"); break;
		case TAG_SVG_ATT_vector_effect: GF_LSR_WRITE_INT(lsr, *(SVG_VectorEffect*)att->data, 4, "vector-effect"); break;
	    case TAG_SVG_ATT_visibility: GF_LSR_WRITE_INT(lsr, *(SVG_PointerEvents*)att->data, 2, "visibility"); break;
	    case TAG_SVG_ATT_requiredExtensions: lsr_write_byte_align_string_list(lsr, *(GF_List **)att->data, "requiredExtensions", 1); break;
	    case TAG_SVG_ATT_requiredFormats: lsr_write_byte_align_string_list(lsr, *(GF_List **)att->data, "requiredFormats", 0); break;
	    case TAG_SVG_ATT_requiredFeatures: 
		{
			GF_List *l = *(GF_List **)att->data;
			u32 j, tot_count, count = gf_list_count(l);
			u8 *vals = (u8*)malloc(sizeof(u8)*count);
			tot_count = 0;
			for (i=0; i<count; i++) {
				char *ext;
				XMLRI *iri = (XMLRI*)gf_list_get(l, i);
				if (iri->type != XMLRI_STRING) continue;
				ext = strchr(iri->string, '#');
				if (!ext) continue;