/*!
*************************************************************************************
* \brief
* ue_v, reads an u(v) syntax element, the length in bits is stored in
* the global UsedBits variable
*
* \param LenInBits
* length of the syntax element
*
* \param tracestring
* the string for the trace file
*
* \param bitstream
* the stream to be read from
*
* \return
* the value of the coded syntax element
*
*************************************************************************************
*/
int u_v (int LenInBits, char*tracestring, Bitstream *bitstream)
{
SyntaxElement symbol, *sym=&symbol;
assert (bitstream->streamBuffer != NULL);
sym->type = SE_HEADER;
sym->mapping = linfo_ue; // Mapping rule
sym->len = LenInBits;
SYMTRACESTRING(tracestring);
readSyntaxElement_FLC (sym, bitstream);
UsedBits+=sym->len;
return sym->inf;
};
/*!
*************************************************************************************
* \brief
* ue_v, reads an u(v) syntax element, the length in bits is stored in
* the global p_Dec->UsedBits variable
*
* \param LenInBits
* length of the syntax element
*
* \param tracestring
* the string for the trace file
*
* \param bitstream
* the stream to be read from
*
* \return
* the value of the coded syntax element
*
*************************************************************************************
*/
int u_v (int LenInBits, char*tracestring, Bitstream *bitstream)
{
SyntaxElement symbol;
symbol.inf = 0;
//assert (bitstream->streamBuffer != NULL);
symbol.type = SE_HEADER;
symbol.mapping = linfo_ue; // Mapping rule
symbol.len = LenInBits;
SYMTRACESTRING(tracestring);
readSyntaxElement_FLC (&symbol, bitstream);
p_Dec->UsedBits+=symbol.len;
return symbol.inf;
}
int read_u_v (int LenInBits, char*tracestring, Bitstream *bitstream, int *used_bits)
{
SyntaxElement symbol;
symbol.inf = 0;
//assert (bitstream->streamBuffer != NULL);
// symbol.type = SE_HEADER;
symbol.mapping = linfo_ue; // Mapping rule
symbol.len = LenInBits;
//SYMTRACESTRING(tracestring);
readSyntaxElement_FLC (&symbol, bitstream);
*used_bits+=symbol.len;
#if TRACE
printf("%s=%d\n",tracestring,symbol.inf);
#endif
return symbol.inf;
}
/*!
*************************************************************************************
* \brief
* read_i_v, reads an i(v) syntax element, the length in bits is stored in
* the global p_Dec->UsedBits variable
*
* \param LenInBits
* length of the syntax element
*
* \param tracestring
* the string for the trace file
*
* \param bitstream
* the stream to be read from
*
* \return
* the value of the coded syntax element
*
*************************************************************************************
*/
int read_i_v (int LenInBits, char*tracestring, Bitstream *bitstream, int *used_bits)
{
SyntaxElement symbol;
symbol.inf = 0;
//assert (bitstream->streamBuffer != NULL);
symbol.type = SE_HEADER;
symbol.mapping = linfo_ue; // Mapping rule
symbol.len = LenInBits;
//SYMTRACESTRING(tracestring);
readSyntaxElement_FLC (&symbol, bitstream);
*used_bits+=symbol.len;
// can be negative
symbol.inf = -( symbol.inf & (1 << (LenInBits - 1)) ) | symbol.inf;
return symbol.inf;
}
