GF_Err gf_bifs_enc_route(GF_BifsEncoder *codec, GF_Route *r, GF_BitStream *bs)
{
GF_Err e;
u32 numBits, ind;
if (!r) return GF_BAD_PARAM;
GF_BIFS_WRITE_INT(codec, bs, r->ID ? 1: 0, 1, "isDEF", NULL);
/*def'ed route*/
if (r->ID) {
GF_BIFS_WRITE_INT(codec, bs, r->ID-1, codec->info->config.RouteIDBits, "routeID", NULL);
if (codec->UseName) gf_bifs_enc_name(codec, bs, r->name);
}
/*origin*/
GF_BIFS_WRITE_INT(codec, bs, gf_node_get_id(r->FromNode) - 1, codec->info->config.NodeIDBits, "outNodeID", NULL);
numBits = gf_node_get_num_fields_in_mode(r->FromNode, GF_SG_FIELD_CODING_OUT) - 1;
numBits = gf_get_bit_size(numBits);
e = gf_bifs_field_index_by_mode(r->FromNode, r->FromField.fieldIndex, GF_SG_FIELD_CODING_OUT, &ind);
if (e) return e;
GF_BIFS_WRITE_INT(codec, bs, ind, numBits, "outField", NULL);
/*target*/
GF_BIFS_WRITE_INT(codec, bs, gf_node_get_id(r->ToNode) - 1, codec->info->config.NodeIDBits, "inNodeID", NULL);
numBits = gf_node_get_num_fields_in_mode(r->ToNode, GF_SG_FIELD_CODING_IN) - 1;
numBits = gf_get_bit_size(numBits);
e = gf_bifs_field_index_by_mode(r->ToNode, r->ToField.fieldIndex, GF_SG_FIELD_CODING_IN, &ind);
GF_BIFS_WRITE_INT(codec, bs, ind, numBits, "inField", NULL);
return e;
}
GF_Err BE_RouteReplace(GF_BifsEncoder *codec, GF_Command *com, GF_BitStream *bs, Bool isInsert)
{
GF_Err e;
GF_Node *n;
u32 numBits, ind;
if (isInsert) {
GF_BIFS_WRITE_INT(codec, bs, com->RouteID ? 1 : 0, 1, "isDEF", NULL);
if (com->RouteID) {
GF_BIFS_WRITE_INT(codec, bs, com->RouteID-1, codec->info->config.RouteIDBits, "RouteID", NULL);
if (codec->UseName) gf_bifs_enc_name(codec, bs, com->def_name);
}
} else {
GF_BIFS_WRITE_INT(codec, bs, com->RouteID - 1, codec->info->config.RouteIDBits, "RouteID", NULL);
}
/*origin*/
GF_BIFS_WRITE_INT(codec, bs, com->fromNodeID - 1, codec->info->config.NodeIDBits, "outNodeID", NULL);
n = gf_bifs_enc_find_node(codec, com->fromNodeID);
numBits = gf_node_get_num_fields_in_mode(n, GF_SG_FIELD_CODING_OUT) - 1;
numBits = gf_get_bit_size(numBits);
e = gf_bifs_field_index_by_mode(n, com->fromFieldIndex, GF_SG_FIELD_CODING_OUT, &ind);
if (e) return e;
GF_BIFS_WRITE_INT(codec, bs, ind, numBits, "outField", NULL);
/*target*/
GF_BIFS_WRITE_INT(codec, bs, com->toNodeID - 1, codec->info->config.NodeIDBits, "inNodeID", NULL);
n = gf_bifs_enc_find_node(codec, com->toNodeID);
numBits = gf_node_get_num_fields_in_mode(n, GF_SG_FIELD_CODING_IN) - 1;
numBits = gf_get_bit_size(numBits);
e = gf_bifs_field_index_by_mode(n, com->toFieldIndex, GF_SG_FIELD_CODING_IN, &ind);
GF_BIFS_WRITE_INT(codec, bs, ind, numBits, "inField", NULL);
return e;
}
void SFE_PutIdentifier(ScriptEnc *sc_enc, char *id)
{
u32 i;
u32 nbBits, length;
char *str;
if (sc_enc->emul) return;
i=0;
while ((str = (char *)gf_list_enum(sc_enc->identifiers, &i))) {
if (strcmp(str, id)) continue;
nbBits = 0;
length = gf_list_count(sc_enc->identifiers) - 1;
while (length > 0) {
length >>= 1;
nbBits ++;
}
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 1, 1, "received", str);
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, i-1, nbBits, "identifierCode", str);
return;
}
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 0, 1, "received", id);
gf_list_add(sc_enc->identifiers, gf_strdup(id));
gf_bifs_enc_name(sc_enc->codec, sc_enc->bs, id);
}
GF_Err gf_bifs_enc_node(GF_BifsEncoder * codec, GF_Node *node, u32 NDT_Tag, GF_BitStream *bs, GF_Node *parent_node)
{
u32 NDTBits, node_type, node_tag, BVersion, node_id;
const char *node_name;
Bool flag, reset_qp14;
GF_Node *new_node;
GF_Err e;
assert(codec->info);
GF_LOG(GF_LOG_DEBUG, GF_LOG_CODEC, ("[BIFS] Encode node %s\n", gf_node_get_class_name(node) ));
/*NULL node is a USE of maxID*/
if (!node) {
GF_BIFS_WRITE_INT(codec, bs, 1, 1, "USE", NULL);
GF_BIFS_WRITE_INT(codec, bs, (1<<codec->info->config.NodeIDBits) - 1 , codec->info->config.NodeIDBits, "NodeID", "NULL");
return GF_OK;
}
flag = BE_NodeIsUSE(codec, node);
GF_BIFS_WRITE_INT(codec, bs, flag ? 1 : 0, 1, "USE", (char*)gf_node_get_class_name(node));
if (flag) {
gf_bs_write_int(bs, gf_node_get_id(node) - 1, codec->info->config.NodeIDBits);
new_node = gf_bifs_enc_find_node(codec, gf_node_get_id(node) );
if (!new_node)
return codec->LastError = GF_SG_UNKNOWN_NODE;
/*restore QP14 length*/
switch (gf_node_get_tag(new_node)) {
case TAG_MPEG4_Coordinate:
{
u32 nbCoord = ((M_Coordinate *)new_node)->point.count;
gf_bifs_enc_qp14_enter(codec, GF_TRUE);
gf_bifs_enc_qp14_set_length(codec, nbCoord);
gf_bifs_enc_qp14_enter(codec, GF_FALSE);
}
break;
case TAG_MPEG4_Coordinate2D:
{
u32 nbCoord = ((M_Coordinate2D *)new_node)->point.count;
gf_bifs_enc_qp14_enter(codec, GF_TRUE);
gf_bifs_enc_qp14_set_length(codec, nbCoord);
gf_bifs_enc_qp14_enter(codec, GF_FALSE);
}
break;
}
return GF_OK;
}
BVersion = GF_BIFS_V1;
node_tag = node->sgprivate->tag;
while (1) {
node_type = gf_bifs_get_node_type(NDT_Tag, node_tag, BVersion);
NDTBits = gf_bifs_get_ndt_bits(NDT_Tag, BVersion);
if (BVersion==2 && (node_tag==TAG_ProtoNode)) node_type = 1;
GF_BIFS_WRITE_INT(codec, bs, node_type, NDTBits, "ndt", NULL);
if (node_type) break;
BVersion += 1;
if (BVersion > GF_BIFS_NUM_VERSION) {
if (parent_node) {
GF_LOG(GF_LOG_ERROR, GF_LOG_CODEC, ("[BIFS] Cannot encode node %s as a child of %s\n", gf_node_get_class_name(node), gf_node_get_class_name(parent_node) ));
} else {
GF_LOG(GF_LOG_ERROR, GF_LOG_CODEC, ("[BIFS] Cannot encode node %s in the SFWorldNode context\n", gf_node_get_class_name(node) ));
}
return codec->LastError = GF_BIFS_UNKNOWN_VERSION;
}
}
if (BVersion==2 && node_type==1) {
GF_Proto *proto = ((GF_ProtoInstance *)node)->proto_interface;
GF_BIFS_WRITE_INT(codec, bs, proto->ID, codec->info->config.ProtoIDBits, "protoID", NULL);
}
/*special handling of 3D mesh*/
/*DEF'd node*/
node_name = gf_node_get_name_and_id(node, &node_id);
GF_BIFS_WRITE_INT(codec, bs, node_id ? 1 : 0, 1, "DEF", NULL);
if (node_id) {
GF_BIFS_WRITE_INT(codec, bs, node_id - 1, codec->info->config.NodeIDBits, "NodeID", NULL);
if (codec->UseName) gf_bifs_enc_name(codec, bs, (char*) node_name );
}
/*no updates of time fields for now - NEEDED FOR A LIVE ENCODER*/
/*if coords were not stored for QP14 before coding this node, reset QP14 it when leaving*/
reset_qp14 = !codec->coord_stored;
/*QP14 case*/
switch (node_tag) {
case TAG_MPEG4_Coordinate:
case TAG_MPEG4_Coordinate2D:
gf_bifs_enc_qp14_enter(codec, GF_TRUE);
}
e = EncNodeFields(codec, bs, node);
if (e) return e;
if (codec->coord_stored && reset_qp14)
gf_bifs_enc_qp14_reset(codec);
switch (node_tag) {
case TAG_MPEG4_Coordinate:
case TAG_MPEG4_Coordinate2D:
gf_bifs_enc_qp14_enter(codec, GF_FALSE);
break;
}
return GF_OK;
}
static GF_Err EncScriptFields(ScriptEnc *sc_enc)
{
u32 nbFields, nbBits, eType, nbBitsProto, i;
Bool use_list;
GF_Err e;
GF_FieldInfo info;
nbFields = gf_node_get_num_fields_in_mode(sc_enc->script, GF_SG_FIELD_CODING_ALL) - 3;
use_list = 1;
nbBits = gf_get_bit_size(nbFields);
if (nbFields+1 > 4 + gf_get_bit_size(nbFields)) use_list = 0;
if (!nbFields) {
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 1, 1, "Script::isList", NULL);
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 1, 1, "end", NULL);
return GF_OK;
}
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, use_list ? 1 : 0, 1, "Script::isList", NULL);
if (!use_list) {
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, nbBits, 4, "nbBits", NULL);
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, nbFields, nbBits, "count", NULL);
}
nbBitsProto = 0;
if (sc_enc->codec->encoding_proto) nbBitsProto = gf_get_bit_size(gf_sg_proto_get_field_count(sc_enc->codec->encoding_proto) - 1);
for (i=0; i<nbFields; i++) {
if (use_list) GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 0, 1, "end", NULL);
gf_node_get_field(sc_enc->script, i+3, &info);
switch (info.eventType) {
case GF_SG_EVENT_IN:
eType = GF_SG_SCRIPT_TYPE_EVENT_IN;
break;
case GF_SG_EVENT_OUT:
eType = GF_SG_SCRIPT_TYPE_EVENT_OUT;
break;
default:
eType = GF_SG_SCRIPT_TYPE_FIELD;
break;
}
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, eType, 2, "eventType", NULL);
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, info.fieldType, 6, "fieldType", NULL);
gf_bifs_enc_name(sc_enc->codec, sc_enc->bs, (char *) info.name);
/*this is an identifier for script*/
gf_list_add(sc_enc->identifiers, gf_strdup(info.name));
if (sc_enc->codec->encoding_proto) {
GF_Route *isedField = gf_bifs_enc_is_field_ised(sc_enc->codec, sc_enc->script, i+3);
if (isedField) {
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 1, 1, "isedField", NULL);
if (isedField->ToNode == sc_enc->script) {
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, isedField->FromField.fieldIndex, nbBitsProto, "protoField", NULL);
} else {
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, isedField->ToField.fieldIndex, nbBitsProto, "protoField", NULL);
}
continue;
}
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 0, 1, "isedField", NULL);
}
/*default value*/
if (eType == GF_SG_SCRIPT_TYPE_FIELD) {
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, (info.far_ptr) ? 1 : 0, 1, "hasInitialValue", NULL);
if (info.far_ptr) {
e = gf_bifs_enc_field(sc_enc->codec, sc_enc->bs, sc_enc->script, &info);
if (e) return e;
}
}
}
if (use_list) GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 1, 1, "end", NULL);
return GF_OK;
}
u32 SFE_Expression(ScriptEnc *sc_enc, u32 start, u32 end, Bool memberAccess)
{
char *str;
u32 n = start;
u32 curPos = 0, finalPos = 0;
u32 curTok, prevTok;
u32 curExpr = 0, expr = 0;
u32 curRank, maxRank=0;
if (sc_enc->err) return 0;
curTok = prevTok = sc_enc->expr_toks[n];
do {
curPos = n;
switch (curTok) {
case TOK_IDENTIFIER:
curExpr = ET_IDENTIFIER;
break;
case TOK_NUMBER:
curExpr = ET_NUMBER;
break;
case TOK_BOOLEAN:
curExpr = ET_BOOLEAN;
break;
case TOK_STRING:
curExpr = ET_STRING;
break;
case TOK_LEFT_CURVE:
if (prevTok == TOK_IDENTIFIER) curExpr = ET_FUNCTION_CALL;
else curExpr = ET_CURVED_EXPR;
n = MoveToToken(sc_enc, TOK_RIGHT_CURVE, n, end);
curTok = TOK_RIGHT_CURVE;
break;
case TOK_LEFT_BRACKET:
curExpr = ET_ARRAY_DEREFERENCE;
n = MoveToToken(sc_enc, TOK_RIGHT_BRACKET, n, end);
curTok = TOK_RIGHT_BRACKET;
break;
case TOK_PERIOD:
curTok = sc_enc->expr_toks[++n];
CHECK_TOK(TOK_IDENTIFIER);
if (sc_enc->expr_toks[n+1] == TOK_LEFT_CURVE) {
curExpr = ET_OBJECT_METHOD_CALL;
n = MoveToToken(sc_enc, TOK_RIGHT_CURVE, n+1, end);
curTok = TOK_RIGHT_CURVE;
} else {
curExpr = ET_OBJECT_MEMBER_ACCESS;
}
break;
case TOK_NEW:
curExpr = ET_NEW;
curTok = sc_enc->expr_toks[++n];
CHECK_TOK(TOK_IDENTIFIER);
curTok = sc_enc->expr_toks[++n];
CHECK_TOK(TOK_LEFT_CURVE);
n = MoveToToken(sc_enc, TOK_RIGHT_CURVE, n, end);
curTok = TOK_RIGHT_CURVE;
break;
case TOK_FUNCTION:
curExpr = ET_FUNCTION_ASSIGN;
break;
case TOK_PLUS:
if (
prevTok==TOK_RIGHT_CURVE || prevTok==TOK_RIGHT_BRACKET ||
prevTok==TOK_IDENTIFIER || prevTok==TOK_NUMBER ||
prevTok==TOK_STRING || prevTok==TOK_INCREMENT ||
prevTok==TOK_DECREMENT
) {
curExpr = ET_PLUS;
} else {
goto skip_token;
}
break;
case TOK_MINUS:
if (
prevTok==TOK_RIGHT_CURVE || prevTok==TOK_RIGHT_BRACKET ||
prevTok==TOK_IDENTIFIER || prevTok==TOK_NUMBER ||
prevTok==TOK_STRING || prevTok==TOK_INCREMENT ||
prevTok==TOK_DECREMENT
) {
curExpr = ET_MINUS;
} else {
curExpr = ET_NEGATIVE;
curTok = TOK_NEGATIVE;
}
break;
case TOK_INCREMENT:
curExpr = ET_INCREMENT;
break;
case TOK_DECREMENT:
curExpr = ET_DECREMENT;
break;
case TOK_NOT:
curExpr = ET_NOT;
break;
case TOK_ONESCOMP:
curExpr = ET_ONESCOMP;
break;
case TOK_CONDTEST:
curExpr = ET_CONDTEST;
break;
case TOK_CONDSEP:
break;
case TOK_LEFT_BRACE:
curExpr = ET_CURVED_EXPR;
n = MoveToToken(sc_enc, TOK_RIGHT_BRACE, n, end);
curTok = TOK_RIGHT_BRACE;
break;
break;
default:
if (curTok && (curTok != TOK_VAR)
&& (curTok < TOK_MULTIPLY || curTok > TOK_OREQ)) {
GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[bifs] Script encoding: illegal token %s read\n", tok_names[curTok]));
sc_enc->err = GF_BAD_PARAM;
return 0;
}
curExpr = TOK_To_ET(curTok);
}
if (curTok == TOK_CONDSEP) {
prevTok = curTok;
curTok = sc_enc->expr_toks[++n];
continue;
}
curRank = ET_Rank[curExpr];
if (curRank > maxRank) {
maxRank = curRank;
expr = curExpr;
finalPos = curPos;
} else if (curRank == maxRank && ET_leftAssoc[curRank]) {
expr = curExpr;
finalPos = curPos;
}
prevTok = curTok;
skip_token:
curTok = sc_enc->expr_toks[++n];
} while (n<end);
if (expr == ET_INCREMENT) {
if (finalPos==start) {}
else if (finalPos==end-1) expr = ET_POST_INCREMENT;
else {
GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[bifs] Script encoding: illegal Increment expression\n"));
sc_enc->err = GF_BAD_PARAM;
return expr;
}
} else if (expr == ET_DECREMENT) {
if (finalPos==start) {}
else if (finalPos==end-1) expr = ET_POST_DECREMENT;
else {
GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[bifs] Script encoding: illegal Decrement expression\n"));
sc_enc->err = GF_BAD_PARAM;
return expr;
}
}
SFE_WRITE_INT(sc_enc, expr, NUMBITS_EXPR_TYPE, "expressionType", (char *) expr_name[expr]);
switch (expr) {
case ET_MULTIPLY:
case ET_DIVIDE:
case ET_MOD:
case ET_PLUS:
case ET_MINUS:
case ET_LSHIFT:
case ET_RSHIFT:
case ET_RSHIFTFILL:
case ET_LT:
case ET_LE:
case ET_GT:
case ET_GE:
case ET_EQ:
case ET_NE:
case ET_AND:
case ET_XOR:
case ET_OR:
case ET_LAND:
case ET_LOR:
SFE_Expression(sc_enc, start, finalPos, 0);
SFE_Expression(sc_enc, finalPos+1, end, 0);
break;
case ET_ASSIGN:
case ET_PLUSEQ:
case ET_MINUSEQ:
case ET_MULTIPLYEQ:
case ET_DIVIDEEQ:
case ET_MODEQ:
case ET_LSHIFTEQ:
case ET_RSHIFTEQ:
case ET_RSHIFTFILLEQ:
case ET_ANDEQ:
case ET_XOREQ:
case ET_OREQ:
{
u32 ret = SFE_Expression(sc_enc, start, finalPos, 0);
if ( ret != ET_IDENTIFIER && ret != ET_OBJECT_MEMBER_ACCESS && ret != ET_ARRAY_DEREFERENCE ) {
GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[bifs] Script encoding: LeftVariable expected, %s returned\n", expr_name[ret]));
sc_enc->err = GF_BAD_PARAM;
return expr;
}
SFE_Expression(sc_enc, finalPos+1, end, 0);
}
break;
case ET_IDENTIFIER:
str = (char *)gf_list_get(sc_enc->id_buf, 0);
gf_list_rem(sc_enc->id_buf, 0);
/*TODO: when accessing member, we should try to translate proto fields into _fieldALL when not
using USENAMEs...*/
if (memberAccess) {
}
SFE_PutIdentifier(sc_enc, str);
gf_free(str);
break;
case ET_NUMBER:
str = (char *)gf_list_get(sc_enc->id_buf, 0);
gf_list_rem(sc_enc->id_buf, 0);
SFE_PutNumber(sc_enc, str);
gf_free(str);
break;
case ET_BOOLEAN:
str = (char *)gf_list_get(sc_enc->id_buf, 0);
gf_list_rem(sc_enc->id_buf, 0);
SFE_PutBoolean(sc_enc, str);
gf_free(str);
break;
case ET_VAR:
while (1) {
str = (char *)gf_list_get(sc_enc->id_buf, 0);
if (!str) break;
gf_list_rem(sc_enc->id_buf, 0);
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 1, 1, "hasArgument", NULL);
SFE_PutIdentifier(sc_enc, str);
gf_free(str);
}
GF_BIFS_WRITE_INT(sc_enc->codec, sc_enc->bs, 0, 1, "hasArgument", NULL);
break;
case ET_STRING:
str = (char *)gf_list_get(sc_enc->id_buf, 0);
gf_list_rem(sc_enc->id_buf, 0);
if (!sc_enc->emul) gf_bifs_enc_name(sc_enc->codec, sc_enc->bs, str);
gf_free(str);
break;
case ET_NEGATIVE:
case ET_INCREMENT:
case ET_DECREMENT:
case ET_NOT:
case ET_ONESCOMP:
SFE_Expression(sc_enc, finalPos+1, end, 0);
break;
case ET_CURVED_EXPR:
SFE_CompoundExpression(sc_enc, finalPos+1, end-1, 0);
break;
case ET_POST_INCREMENT :
case ET_POST_DECREMENT :
SFE_Expression(sc_enc, start, finalPos, 0);
break;
case ET_FUNCTION_CALL:
SFE_FunctionCall(sc_enc, start, end);
break;
case ET_OBJECT_MEMBER_ACCESS :
SFE_ObjectMemberAccess(sc_enc, start, finalPos, end);
break;
case ET_OBJECT_METHOD_CALL:
SFE_ObjectMethodCall(sc_enc, start, finalPos, end);
break;
case ET_ARRAY_DEREFERENCE:
SFE_ArrayDereference(sc_enc, start, finalPos, end);
break;
case ET_NEW:
SFE_ObjectConstruct(sc_enc, start, finalPos, end);
break;
case ET_CONDTEST:
SFE_ConditionTest(sc_enc, start, finalPos, end);
break;
case ET_FUNCTION_ASSIGN:
SFE_NextToken(sc_enc);
SFE_CheckToken(sc_enc, TOK_LEFT_CURVE);
SFE_Arguments(sc_enc);
SFE_StatementBlock(sc_enc);
SFE_NextToken(sc_enc);
SFE_CheckToken(sc_enc, TOK_SEMICOLON);
break;
default:
GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[bifs] Script encoding: illegal expression type %s\n", expr_name[expr]));
sc_enc->err = GF_BAD_PARAM;
break;
}
return expr;
}
GF_Err BE_EncProtoList(GF_BifsEncoder *codec, GF_List *protoList, GF_BitStream *bs)
{
u8 useQuant, useAnim;
u32 i, j, nbRoutes, nbBits, numProtos, numFields, count;
GF_Node *node;
GF_ProtoFieldInterface *proto_field;
GF_Proto *proto, *prev_proto;
GF_Route *r;
GF_Err e;
GF_SceneGraph *rootSG;
GF_FieldInfo field;
e = GF_OK;
if (!protoList || !gf_list_count(protoList)) {
GF_BIFS_WRITE_INT(codec, bs, 0, 1, "moreProto", NULL);
return GF_OK;
}
if (!codec->info->config.ProtoIDBits)
return GF_NON_COMPLIANT_BITSTREAM;
/*store state*/
rootSG = codec->current_proto_graph;
prev_proto = codec->encoding_proto;
numProtos = gf_list_count(protoList);
for (i=0; i<numProtos; i++) {
proto = (GF_Proto*)gf_list_get(protoList, i);
useQuant = useAnim = 0;
/*set current proto state*/
codec->encoding_proto = proto;
codec->current_proto_graph = proto->sub_graph;
GF_BIFS_WRITE_INT(codec, bs, 1, 1, "moreProto", NULL);
/*1- proto interface declaration*/
GF_BIFS_WRITE_INT(codec, bs, proto->ID, codec->info->config.ProtoIDBits, "protoID", NULL);
if (codec->UseName) gf_bifs_enc_name(codec, bs, proto->Name);
numFields = gf_list_count(proto->proto_fields);
for (j=0; j<numFields; j++) {
proto_field = (GF_ProtoFieldInterface*)gf_list_get(proto->proto_fields, j);
GF_BIFS_WRITE_INT(codec, bs, 1, 1, "moreField", NULL);
GF_BIFS_WRITE_INT(codec, bs, proto_field->EventType, 2, "eventType", NULL);
GF_BIFS_WRITE_INT(codec, bs, proto_field->FieldType, 6, "fieldType", NULL);
if (codec->UseName) gf_bifs_enc_name(codec, bs, proto_field->FieldName);
switch (proto_field->EventType) {
case GF_SG_EVENT_EXPOSED_FIELD:
case GF_SG_EVENT_FIELD:
gf_sg_proto_field_get_field(proto_field, &field);
if (gf_sg_vrml_is_sf_field(field.fieldType)) {
e = gf_bifs_enc_sf_field(codec, bs, NULL, &field);
} else {
if (codec->info->config.UsePredictiveMFField) GF_BIFS_WRITE_INT(codec, bs, 0, 1, "usePredictive", NULL);
e = gf_bifs_enc_mf_field(codec, bs, NULL, &field);
}
if (e) goto exit;
break;
}
if (proto_field->QP_Type) useQuant = 1;
if (proto_field->Anim_Type) useAnim = 1;
}
GF_BIFS_WRITE_INT(codec, bs, 0, 1, "moreField", NULL);
GF_BIFS_WRITE_INT(codec, bs, proto->ExternProto.count ? 1 : 0, 1, "externProto", NULL);
/*externProto*/
if (proto->ExternProto.count) {
memset(&field, 0, sizeof(GF_FieldInfo));
field.far_ptr = &proto->ExternProto;
field.fieldType = GF_SG_VRML_MFURL;
field.name = "ExternProto";
if (codec->info->config.UsePredictiveMFField) GF_BIFS_WRITE_INT(codec, bs, 0, 1, "usePredictive", NULL);
e = gf_bifs_enc_mf_field(codec, bs, NULL, &field);
if (e) goto exit;
} else {
/*encode sub-proto list*/
e = BE_EncProtoList(codec, proto->sub_graph->protos, bs);
if (e) goto exit;
count = gf_list_count(proto->node_code);
/*BIFS cannot encode empty protos ! We therefore encode a NULL node instead*/
if (!count) {
gf_bifs_enc_node(codec, NULL, NDT_SFWorldNode, bs);
GF_BIFS_WRITE_INT(codec, bs, 0, 1, "moreNodes", NULL);
} else {
for (j=0; j<count; j++) {
/*parse all nodes in SFWorldNode table*/
node = (GF_Node*)gf_list_get(proto->node_code, j);
e = gf_bifs_enc_node(codec, node, NDT_SFWorldNode, bs);
if (e) goto exit;
GF_BIFS_WRITE_INT(codec, bs, (j+1==count) ? 0 : 1, 1, "moreNodes", NULL);
}
}
/*encode routes routes*/
nbRoutes = count = gf_list_count(proto->sub_graph->Routes);
for (j=0; j<count; j++) {
r = (GF_Route*)gf_list_get(proto->sub_graph->Routes, j);
if (r->IS_route) nbRoutes--;
}
GF_BIFS_WRITE_INT(codec, bs, nbRoutes ? 1 : 0, 1, "hasRoute", NULL);
if (nbRoutes) {
nbBits = gf_get_bit_size(nbRoutes);
if (nbBits + 5 > nbRoutes) {
GF_BIFS_WRITE_INT(codec, bs, 1, 1, "isList", NULL);
/*list*/
for (j=0; j<count; j++) {
r = (GF_Route*)gf_list_get(proto->sub_graph->Routes, j);
if (r->IS_route) continue;
e = gf_bifs_enc_route(codec, r, bs);
if (e) goto exit;
nbRoutes--;
GF_BIFS_WRITE_INT(codec, bs, nbRoutes ? 1 : 0, 1, "moreRoute", NULL);
}
} else {
GF_BIFS_WRITE_INT(codec, bs, 0, 1, "isList", NULL);
GF_BIFS_WRITE_INT(codec, bs, nbBits, 5, "nbBits", NULL);
GF_BIFS_WRITE_INT(codec, bs, nbRoutes, nbBits, "length", NULL);
for (j=0; j<count; j++) {
r = (GF_Route*)gf_list_get(proto->sub_graph->Routes, j);
if (r->IS_route) continue;
e = gf_bifs_enc_route(codec, r, bs);
if (e) goto exit;
}
}
}
}
/*anim and Quantization stuff*/
GF_BIFS_WRITE_INT(codec, bs, useQuant, 1, "useQuant", NULL);
GF_BIFS_WRITE_INT(codec, bs, useAnim, 1, "useAnim", NULL);
if (!useAnim && !useQuant) continue;
count = gf_sg_proto_get_field_count(proto);
for (j=0; j<count; j++) {
proto_field = gf_sg_proto_field_find(proto, j);
gf_sg_proto_field_get_field(proto_field, &field);
/*quant*/
if (useQuant && ( (field.eventType == GF_SG_EVENT_FIELD) || (field.eventType == GF_SG_EVENT_EXPOSED_FIELD) )) {
GF_BIFS_WRITE_INT(codec, bs, proto_field->QP_Type, 4, "QPType", NULL);
if (proto_field->QP_Type==QC_LINEAR_SCALAR) GF_BIFS_WRITE_INT(codec, bs, proto_field->NumBits, 5, "nbBits", NULL);
GF_BIFS_WRITE_INT(codec, bs, proto_field->hasMinMax, 1, "hasMinMax", NULL);
if (proto_field->hasMinMax) {
field.fieldType = gf_sg_vrml_get_sf_type(field.fieldType);
switch (field.fieldType) {
case GF_SG_VRML_SFINT32:
case GF_SG_VRML_SFTIME:
break;
default:
field.fieldType = GF_SG_VRML_SFFLOAT;
break;
}
field.name = "QPMinValue";
field.far_ptr = proto_field->qp_min_value;
gf_bifs_enc_sf_field(codec, bs, NULL, &field);
field.name = "QPMaxValue";
field.far_ptr = proto_field->qp_max_value;
gf_bifs_enc_sf_field(codec, bs, NULL, &field);
}
}
/*anim - not supported yet*/
if (useAnim && ( (field.eventType == GF_SG_EVENT_IN) || (field.eventType == GF_SG_EVENT_EXPOSED_FIELD) )) {
e = GF_NOT_SUPPORTED;
goto exit;
}
}
}
GF_BIFS_WRITE_INT(codec, bs, 0, 1, "moreProto", NULL);
exit:
/*restore scene graph state*/
codec->encoding_proto = prev_proto;
codec->current_proto_graph = rootSG;
return e;
}
