loader_svg_da.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

		parser->command->node = svg_find_node(parser, atNode);
		if (!parser->command->node) return svg_report(parser, GF_BAD_PARAM, "Cannot find node node ref %s for command", atNode);
		if (atAtt) {
			if (!strcmp(atAtt, "children")) {
				field = gf_sg_command_field_new(parser->command);
				field->pos = index;
				field->fieldIndex = 0;
				field->fieldType = 0;
			} else {
				if (gf_svg_get_attribute_by_name(parser->command->node, atAtt, 0, 0, &info)==GF_OK) {
					field = gf_sg_command_field_new(parser->command);
					field->pos = index;
					field->fieldIndex = info.fieldIndex;
					field->fieldType = info.fieldType;
				}
			}
		} else if (index>=0) {
			field = gf_sg_command_field_new(parser->command);
			field->pos = index;
		}
		gf_node_register(parser->command->node, NULL);
		return GF_OK;
	case GF_SG_LSR_REPLACE:
		is_replace = 1;
	case GF_SG_LSR_ADD:
	case GF_SG_LSR_INSERT:
		for (i=0; i<nb_attributes; i++) {
			GF_XMLAttribute *att = (GF_XMLAttribute *)&attributes[i];
			if (!strcmp(att->name, "ref")) atNode = att->value;
			else if (!strcmp(att->name, "operandElementId")) atOperandNode = att->value;
			else if (!strcmp(att->name, "operandAttributeName")) atOperandAtt = att->value;
			else if (!strcmp(att->name, "value")) atValue = att->value;
			else if (!strcmp(att->name, "attributeName")) atAtt = att->value;
			/*replace only*/
			else if (!strcmp(att->name, "index")) index = atoi(att->value);
		}
		if (!atNode) return svg_report(parser, GF_BAD_PARAM, "Missing node ref for command");
		parser->command->node = svg_find_node(parser, atNode);
		if (!parser->command->node) return svg_report(parser, GF_BAD_PARAM, "Cannot find node node ref %s for command", atNode);
		/*child or node replacement*/
		if ( (is_replace || (parser->command->tag==GF_SG_LSR_INSERT)) && (!atAtt || !strcmp(atAtt, "children")) ) {
			field = gf_sg_command_field_new(parser->command);
			field->pos = index;
			if (atAtt) field->fieldIndex = TAG_LSR_ATT_children;
			gf_node_register(parser->command->node, NULL);
			return GF_OK;
		}
		if (!atAtt) return svg_report(parser, GF_BAD_PARAM, "Missing attribute name for command");
		if (!strcmp(atAtt, "textContent")) {
			field = gf_sg_command_field_new(parser->command);
			field->pos = -1;
			field->fieldIndex = (u32) -1;
			field->fieldType = SVG_String_datatype;
			gf_node_register(parser->command->node, NULL);
			if (atValue) {
				field->field_ptr = gf_svg_create_attribute_value(field->fieldType);
				*(SVG_String *)field->field_ptr = strdup(atValue);
			}
			return GF_OK;
		}
		if (!strcmp(atAtt, "scale") || !strcmp(atAtt, "translation") || !strcmp(atAtt, "rotation")) {
			if (!strcmp(atAtt, "scale")) {
				info.fieldType = SVG_Transform_Scale_datatype;
				info.fieldIndex = TAG_LSR_ATT_scale;
			}
			else if (!strcmp(atAtt, "translation")) {
				info.fieldType = SVG_Transform_Translate_datatype;
				info.fieldIndex = TAG_LSR_ATT_translation;
			}
			else if (!strcmp(atAtt, "rotation")) {
				info.fieldType = SVG_Transform_Rotate_datatype;
				info.fieldIndex = TAG_LSR_ATT_rotation;
			}
		} else {
			info.fieldIndex = gf_svg_get_attribute_tag(parser->command->node->sgprivate->tag, atAtt);
			info.fieldType = gf_svg_get_attribute_type(info.fieldIndex);

			if (gf_lsr_anim_type_from_attribute(info.fieldIndex)<0) {
				return svg_report(parser, GF_BAD_PARAM, "Attribute %s of element %s is not updatable\n", atAtt, gf_node_get_class_name(parser->command->node));
			}
		}

		opNode = NULL;
		if (atOperandNode) {
			opNode = gf_sg_find_node_by_name(parser->load->scene_graph, atOperandNode);
			if (!opNode) return svg_report(parser, GF_BAD_PARAM, "Cannot find operand element %s for command", atOperandNode);
		}
		if (!atValue && (!atOperandNode || !atOperandAtt) ) return svg_report(parser, GF_BAD_PARAM, "Missing attribute value for command");
		field = gf_sg_command_field_new(parser->command);
		field->pos = index;
		field->fieldIndex = info.fieldIndex;
		field->fieldType = info.fieldType;
		if (atValue) {
			GF_FieldInfo nf;
			nf.fieldType = info.fieldType;
			field->field_ptr = nf.far_ptr = gf_svg_create_attribute_value(info.fieldType);
			if (field->field_ptr) gf_svg_parse_attribute(parser->command->node, &nf, atValue, (u8) info.fieldType);
		} else if (opNode) {
			parser->command->fromNodeID = gf_node_get_id(opNode);
			parser->command->fromFieldIndex = gf_svg_get_attribute_tag(opNode->sgprivate->tag, atOperandAtt);
		}
		gf_node_register(parser->command->node, NULL);
		return GF_OK;
	case GF_SG_LSR_ACTIVATE:
	case GF_SG_LSR_DEACTIVATE:
		for (i=0; i<nb_attributes; i++) {
			GF_XMLAttribute *att = (GF_XMLAttribute *) &attributes[i];
			if (!strcmp(att->name, "ref")) atNode = att->value;
		}
		if (!atNode) return svg_report(parser, GF_BAD_PARAM, "Missing node ref for command");
		/*should be a XML IDREF, not an XML IRI*/
		if (atNode[0]=='#') atNode++;
		parser->command->node = svg_find_node(parser, atNode);
		if (!parser->command->node) return svg_report(parser, GF_BAD_PARAM, "Cannot find node node ref %s for command", atNode);
		gf_node_register(parser->command->node, NULL);

		/*switch to V2*/
		svg_lsr_set_v2(parser);

		return GF_OK;
	default:
		return GF_OK;
	}
}


static u32 lsr_get_command_by_name(const char *name)
{
	if (!strcmp(name, "NewScene")) return GF_SG_LSR_NEW_SCENE;
	else if (!strcmp(name, "RefreshScene")) return GF_SG_LSR_REFRESH_SCENE;
	else if (!strcmp(name, "Add")) return GF_SG_LSR_ADD;
	else if (!strcmp(name, "Clean")) return GF_SG_LSR_CLEAN;
	else if (!strcmp(name, "Replace")) return GF_SG_LSR_REPLACE;
	else if (!strcmp(name, "Delete")) return GF_SG_LSR_DELETE;
	else if (!strcmp(name, "Insert")) return GF_SG_LSR_INSERT;
	else if (!strcmp(name, "Restore")) return GF_SG_LSR_RESTORE;
	else if (!strcmp(name, "Save")) return GF_SG_LSR_SAVE;
	else if (!strcmp(name, "SendEvent")) return GF_SG_LSR_SEND_EVENT;
	else if (!strcmp(name, "Activate")) return GF_SG_LSR_ACTIVATE;
	else if (!strcmp(name, "Deactivate")) return GF_SG_LSR_DEACTIVATE;
	return GF_SG_UNDEFINED;
}

static GF_ESD *lsr_parse_header(GF_SVG_Parser *parser, const char *name, const char *name_space, const GF_XMLAttribute *attributes, u32 nb_attributes)
{
	GF_ESD *esd;
	u32 i;
	if (!strcmp(name, "LASeRHeader")) {
		GF_LASERConfig *lsrc = (GF_LASERConfig *) gf_odf_desc_new(GF_ODF_LASER_CFG_TAG);
		for (i=0; i<nb_attributes;i++) {
			GF_XMLAttribute *att = (GF_XMLAttribute *) &attributes[i];
			if (!strcmp(att->name, "profile")) lsrc->profile = !strcmp(att->value, "full") ? 1 : 0;
			else if (!strcmp(att->name, "level")) lsrc->level = atoi(att->value);
			else if (!strcmp(att->name, "resolution")) lsrc->resolution = atoi(att->value);
			else if (!strcmp(att->name, "timeResolution")) lsrc->time_resolution = atoi(att->value);
			else if (!strcmp(att->name, "coordBits")) lsrc->coord_bits = atoi(att->value);
			else if (!strcmp(att->name, "scaleBits_minus_coordBits")) lsrc->scale_bits_minus_coord_bits = atoi(att->value);
			else if (!strcmp(att->name, "colorComponentBits")) lsrc->colorComponentBits = atoi(att->value);
			else if (!strcmp(att->name, "newSceneIndicator")) lsrc->newSceneIndicator = (!strcmp(att->value, "yes") || !strcmp(att->value, "true")) ? 1 : 0;
			else if (!strcmp(att->name, "useFullRequestHost")) lsrc->fullRequestHost = (!strcmp(att->value, "yes") || !strcmp(att->value, "true")) ? 1 : 0;
			else if (!strcmp(att->name, "pathComponents")) lsrc->fullRequestHost = atoi(att->value);
			else if (!strcmp(att->name, "extensionIDBits")) lsrc->extensionIDBits = atoi(att->value);
			/*others are ignored in GPAC atm*/
		}
		esd = gf_odf_desc_esd_new(2);
		gf_odf_desc_del((GF_Descriptor *)esd->decoderConfig->decoderSpecificInfo);
		esd->decoderConfig->decoderSpecificInfo = (GF_DefaultDescriptor *) lsrc;
		esd->decoderConfig->streamType = GF_STREAM_SCENE;
		esd->decoderConfig->objectTypeIndication = 0x09;
		esd->slConfig->timestampResolution = lsrc->time_resolution ? lsrc->time_resolution : 1000;
		return esd;
	}
	return NULL;
}

static void svg_node_start(void *sax_cbck, const char *name, const char *name_space, const GF_XMLAttribute *attributes, u32 nb_attributes)
{
	GF_SVG_Parser *parser = (GF_SVG_Parser *)sax_cbck;
	SVG_NodeStack *stack, *parent;
	SVG_Element *elt;
	SVG_Element *cond = NULL;

	parent = (SVG_NodeStack *)gf_list_last(parser->node_stack);

	/*switch to conditional*/
	if (parent && parent->node->sgprivate->tag==TAG_SVG_conditional) {
		cond = parent->node;
		parent = NULL;
	}

	/*saf setup*/
	if ((!parent && (parser->load->type==GF_SM_LOAD_XSR)) || cond) {
		u32 com_type;
		/*nothing to do, the context is already created*/
		if (!strcmp(name, "SAFSession")) return;
		/*nothing to do, wait for the laser (or other) header before creating stream)*/
		if (!strcmp(name, "sceneHeader")) return;
		/*nothing to do, wait for the laser (or other) header before creating stream)*/
		if (!strcmp(name, "LASeRHeader")) {
			GF_ESD *esd = lsr_parse_header(parser, name, name_space, attributes, nb_attributes);
			if (!esd) svg_report(parser, GF_BAD_PARAM, "Invalid LASER Header");
			/*TODO find a better way of assigning an ID to the laser stream...*/
			esd->ESID = 1;
			parser->laser_es = gf_sm_stream_new(parser->load->ctx, esd->ESID, esd->decoderConfig->streamType, esd->decoderConfig->objectTypeIndication);
			if (!parser->load->ctx->root_od) parser->load->ctx->root_od = (GF_ObjectDescriptor *) gf_odf_desc_new(GF_ODF_IOD_TAG);
			gf_list_add(parser->load->ctx->root_od->ESDescriptors, esd);
			parser->laser_es->timeScale = esd->slConfig->timestampResolution;
			return;
		}
		if (!strcmp(name, "sceneUnit") ) {
			u32 time, rap, i;
			time = rap = 0;
			if (!gf_list_count(parser->laser_es->AUs)) rap = 1;
			for (i=0; i<nb_attributes;i++) {
				GF_XMLAttribute *att = (GF_XMLAttribute *) &attributes[i];
				if (!strcmp(att->name, "time")) time = atoi(att->value);
				else if (!strcmp(att->name, "rap")) rap = !strcmp(att->value, "yes") ? 1 : 0;
			}
			/*create new laser unit*/
			parser->laser_au = gf_sm_stream_au_new(parser->laser_es, time, 0, rap);
			return;			
		}

		if (!strcmp(name, "StreamHeader") || !strcmp(name, "RemoteStreamHeader")
			/*SAF & SAFML are just a pain ...*/
			|| !strcmp(name, "mediaHeader") || !strcmp(name, "imageHeader")
		) {
			char *url = NULL;
			char *src = NULL;
			const char *ID = NULL;
			u32 time, OTI, ST, i, ts_res;
			GF_ODUpdate *odU;
			GF_ObjectDescriptor *od;
			Bool rap;
			SVG_SAFExternalStream*st;
			/*create a SAF stream*/
			if (!parser->saf_es) {
				GF_ESD *esd = (GF_ESD*)gf_odf_desc_esd_new(2);
				esd->ESID = 0xFFFE;
				esd->decoderConfig->streamType = GF_STREAM_OD;
				esd->decoderConfig->objectTypeIndication = 1;
				parser->saf_es = gf_sm_stream_new(parser->load->ctx, esd->ESID, GF_STREAM_OD, 1);
				if (!parser->load->ctx->root_od) parser->load->ctx->root_od = (GF_ObjectDescriptor *) gf_odf_desc_new(GF_ODF_IOD_TAG);
				parser->saf_es->timeScale = 1000;
				gf_list_add(parser->load->ctx->root_od->ESDescriptors, esd);
			}
			time = 0;
			rap = 0;
			ts_res = 1000;
			OTI = ST = 0;
			for (i=0; i<nb_attributes;i++) {
				GF_XMLAttribute *att = (GF_XMLAttribute *) &attributes[i];
				if (!strcmp(att->name, "time")) time = atoi(att->value);
				else if (!strcmp(att->name, "rap")) rap = !strcmp(att->value, "yes") ? 1 : 0;
				else if (!strcmp(att->name, "url")) url = strdup(att->value); 
				else if (!strcmp(att->name, "streamID")) ID = att->value;
				else if (!strcmp(att->name, "objectTypeIndication")) OTI = atoi(att->value);
				else if (!strcmp(att->name, "streamType")) ST = atoi(att->value);
				else if (!strcmp(att->name, "timeStampResolution")) ts_res = atoi(att->value);
				else if (!strcmp(att->name, "source")) src = att->value;

			}
			if (!strcmp(name, "imageHeader")) ST = 4;

			/*create new SAF stream*/
			st = svg_saf_get_next_available_stream(parser);
			st->stream_name = strdup(ID);

			/*create new SAF unit*/
			parser->saf_au = gf_sm_stream_au_new(parser->saf_es, time, 0, 0);
			odU = (GF_ODUpdate *) gf_odf_com_new(GF_ODF_OD_UPDATE_TAG);
			gf_list_add(parser->saf_au->commands, odU);
			od = (GF_ObjectDescriptor *) gf_odf_desc_new(GF_ODF_OD_TAG);
			gf_list_add(odU->objectDescriptors, od);
			od->objectDescriptorID = st->id;

			if (url) {
				od->URLString = url;
			} else {
				char szName[1024];
				GF_MuxInfo *mux;
				FILE *nhml;
				GF_ESD *esd = (GF_ESD*)gf_odf_desc_esd_new(2);
				gf_list_add(od->ESDescriptors, esd);
				esd->decoderConfig->objectTypeIndication = OTI;
				esd->decoderConfig->streamType = ST;
				esd->ESID = st->id;

				mux = (GF_MuxInfo *)gf_odf_desc_new(GF_ODF_MUXINFO_TAG);
				gf_list_add(esd->extensionDescriptors, mux);

				/*global source for stream, don't use nhml dumping*/
				if (src) {
					mux->file_name = strdup(src);
					st->nhml_info = NULL;
				} else {
					if (parser->load->localPath) {
						strcpy(szName, parser->load->localPath);
						strcat(szName, ID);
					} else {
						strcpy(szName, ID);
					}
					strcat(szName, "_temp.nhml");
					mux->file_name = strdup(szName);
					st->nhml_info = mux->file_name;
					nhml = fopen(st->nhml_info, "wt");
					fprintf(nhml, "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n");
					fprintf(nhml, "<NHNTStream version=\"1.0\" timeScale=\"%d\" streamType=\"%d\" objectTypeIndication=\"%d\" inRootOD=\"no\" trackID=\"%d\">\n", ts_res, ST, OTI, st->id);
					fclose(nhml);
					mux->delete_file = 1;
				}
			}
			return;
		}
		if (!strcmp(name, "mediaUnit") || !strcmp(name, "imageUnit") ) {
			FILE *nhml;
			char *id = NULL;
			char *src = NULL;
			SVG_SAFExternalStream*st;
			u32 i, rap, time, offset, length;
			rap = time = offset = length = 0;
			for (i=0; i<nb_attributes;i++) {
				GF_XMLAttribute *att = (GF_XMLAttribute *) &attributes[i];
				if (!strcmp(att->name, "time")) time = atoi(att->value);
				else if (!strcmp(att->name, "source")) src = att->value;
				else if (!strcmp(att->name, "ref")) id = att->value;
				else if (!strcmp(att->name, "rap")) rap = !strcmp(att->value, "yes") ? 1 : 0;
				else if (!strcmp(att->name, "startOffset")) offset = atoi(att->value);
				else if (!strcmp(att->name, "length")) length = atoi(att->value);
			}
			st = svg_saf_get_stream(parser, 0, id);
			if (!st || !st->nhml_info) {
				return;
			}
			nhml = fopen(st->nhml_info, "a+t");
			fprintf(nhml, "<NHNTSample ");
			if (time) fprintf(nhml, "DTS=\"%d\" ", time);
			if (length) fprintf(nhml, "dataLength=\"%d\" ", length);
			if (offset) fprintf(nhml, "mediaOffset=\"%d\" ", offset);
			if (rap) fprintf(nhml, "isRAP=\"yes\" ");
			if (src) fprintf(nhml, "mediaFile=\"%s\" ", src);
			fprintf(nhml, "/>\n");
			fclose(nhml);
			return;
		}
		if (!strcmp(name, "endOfStream") ) {
			FILE *nhml;
			char *id = NULL;
			u32 i;
			SVG_SAFExternalStream*st;
			for (i=0; i<nb_attributes;i++) {
				GF_XMLAttribute *att = (GF_XMLAttribute *) &attributes[i];
				if (!strcmp(att->name, "ref")) id = att->value;
			}
			st = svg_saf_get_stream(parser, 0, id);
			if (!st || !st->nhml_info) {
				return;
			}
			nhml = fopen(st->nhml_info, "a+t");
			fprintf(nhml, "</NHNTStream>\n");
			fclose(nhml);
			return;
		}

		if (!strcmp(name, "endOfSAFSession") ) {
			return;
		}
		if (!parser->laser_au && !cond) {
			svg_report(parser, GF_BAD_PARAM, "LASeR Scene unit not defined for command %s", name);
			return;
		}
		/*command parsing*/
		com_type = lsr_get_command_by_name(name);
		if (com_type != GF_SG_UNDEFINED) {
			SVG_NodeStack *top;
			GF_Err e;
			parser->command = gf_sg_command_new(parser->load->scene_graph, com_type);
			if (cond) {
				GF_DOMUpdates *up = cond->children ? (GF_DOMUpdates *)cond->children->node : NULL;
				if (!up) {
					up = gf_dom_add_updates_node((GF_Node*)cond);

					if (parser->load->flags & GF_SM_LOAD_FOR_PLAYBACK) {
						gf_node_set_callback_function((GF_Node*)up, xsr_exec_command_list);
					}
				}