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headers now decode properly

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UnknownShadow200 2018-07-28 15:42:02 +10:00
parent 098136160e
commit c481aa32f6
1 changed files with 13 additions and 9 deletions
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20
src/Client/Audio.c
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@ -75,7 +75,7 @@ void Ogg_MakeStream(struct Stream* stream, UInt8* buffer, struct Stream* source)
*------------------------------------------------------Vorbis utils-------------------------------------------------------*
*#########################################################################################################################*/
/* Insert next byte into the bit buffer */
#define Vorbis_GetByte(state) state->Bits |= (UInt32)Stream_ReadUInt8(state->Source) << state->NumBits; state->NumBits += 8;
#define Vorbis_GetByte(state) state->Bits |= (UInt32)Stream_ReadU8(state->Source) << state->NumBits; state->NumBits += 8;
/* Retrieves bits from the bit buffer */
#define Vorbis_PeekBits(state, bits) (state->Bits & ((1UL << (bits)) - 1UL))
/* Consumes/eats up bits from the bit buffer */
@ -85,8 +85,12 @@ void Ogg_MakeStream(struct Stream* stream, UInt8* buffer, struct Stream* source)
/* Ensures there are 'bitsCount' bits */
#define Vorbis_EnsureBits(state, bitsCount) while (state->NumBits < bitsCount) { Vorbis_GetByte(state); }
/* Peeks then consumes given bits */
/* TODO: COMPLETELY BROKEN */
#define Vorbis_ReadBits(state, bitsCount) Vorbis_PeekBits(state, bitsCount); Vorbis_ConsumeBits(state, bitsCount);
/* TODO: Make this an inline macro somehow */
UInt32 Vorbis_ReadBits(struct VorbisState* state, UInt32 bitsCount) {
Vorbis_EnsureBits(state, bitsCount);
UInt32 result = Vorbis_PeekBits(state, bitsCount); Vorbis_ConsumeBits(state, bitsCount);
return result;
}
#define VORBIS_MAX_CHANS 8
@ -108,7 +112,7 @@ Real32 float32_unpack(struct VorbisState* state) {
#define LOG_2 0.693147180559945
/* TODO: Can we make this more accurate? maybe ldexp ?? */
return (Real32)(mantissa * Math_Exp(LOG_2 * exponent)); /* pow(2, x) */
return (Real32)(mantissa * Math_Exp(LOG_2 * ((Int32)exponent - 788))); /* pow(2, x) */
}
@ -139,8 +143,8 @@ UInt32 lookup1_values(UInt32 entries, UInt32 dimensions) {
UInt32 next = Codebook_Pow(i + 1, dimensions);
if (next < pow) return i; /* overflow */
if (pow == dimensions) return i;
if (next > dimensions) return i;
if (pow == entries) return i;
if (next > entries) return i;
}
return 0;
}
@ -338,7 +342,7 @@ ReturnCode Mapping_DecodeSetup(struct VorbisState* state, struct Mapping* mappin
}
for (i = 0; i < submaps; i++) {
Vorbis_ConsumeBits(state, 8); /* time value */
Vorbis_ReadBits(state, 8); /* time value */
mapping->FloorIdx[i] = Vorbis_ReadBits(state, 8);
mapping->ResidueIdx[i] = Vorbis_ReadBits(state, 8);
}
@ -460,7 +464,7 @@ static ReturnCode Vorbis_DecodeSetup(struct VorbisState* state) {
state->Mappings = Platform_MemAlloc(count, sizeof(struct Mapping), "vorbis mappings");
for (i = 0; i < count; i++) {
UInt16 mapping = Vorbis_ReadBits(state, 16);
if (mapping != 0) return VORBIS_ERR_FLOOR_TYPE;
if (mapping != 0) return VORBIS_ERR_MAPPING_TYPE;
result = Mapping_DecodeSetup(state, &state->Mappings[i]);
if (result) return result;
}