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87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
#ifndef JPEG_H
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#define JPEG_H
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#include "ultra64.h"
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#include "sched.h"
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typedef struct JpegQuantizationTable {
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/* 0x00 */ u16 table[8*8];
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} JpegQuantizationTable; // size = 0x80
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typedef struct JpegHuffmanTable {
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/* 0x00 */ u8 codeOffs[16];
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/* 0x10 */ u16 codesA[16];
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/* 0x30 */ u16 codesB[16];
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/* 0x50 */ u8* symbols;
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} JpegHuffmanTable; // size = 0x54
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// this struct might be inaccurate but it's not used outside jpegutils.c anyways
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typedef struct JpegHuffmanTableOld {
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/* 0x000 */ u8 codeOffs[16];
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/* 0x010 */ u16 dcCodes[120];
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/* 0x100 */ u16 acCodes[256];
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} JpegHuffmanTableOld; // size = 0x300
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typedef union JpegTaskData {
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struct {
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/* 0x00 */ u32 address;
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/* 0x04 */ u32 mbCount;
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/* 0x08 */ u32 mode;
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/* 0x0C */ u32 qTableYPtr;
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/* 0x10 */ u32 qTableUPtr;
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/* 0x14 */ u32 qTableVPtr;
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/* 0x18 */ u32 mbSize; // This field is used by the microcode to save the macroblock size during a yield
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};
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long long int force_structure_alignment;
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} JpegTaskData; // size = 0x20
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typedef struct JpegWork {
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/* 0x000 */ JpegTaskData taskData;
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/* 0x020 */ u64 yieldData[0x200 / sizeof(u64)];
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/* 0x220 */ JpegQuantizationTable qTableY;
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/* 0x2A0 */ JpegQuantizationTable qTableU;
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/* 0x320 */ JpegQuantizationTable qTableV;
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/* 0x3A0 */ u8 codesLengths[0x110];
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/* 0x4B0 */ u16 codes[0x108];
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/* 0x6C0 */ u16 data[4][0x180];
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} JpegWork; // size = 0x12C0
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typedef struct JpegDecoder {
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/* 0x00 */ void* imageData;
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/* 0x04 */ u8 mode;
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/* 0x05 */ u8 unk_05;
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/* 0x08 */ JpegHuffmanTable* hTablePtrs[4];
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/* 0x18 */ u8 unk_18;
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} JpegDecoder; // size = 0x1C
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typedef struct JpegContext {
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/* 0x00 */ u8 dqtCount;
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/* 0x04 */ u8* dqtPtr[3];
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/* 0x10 */ u8 dhtCount;
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/* 0x14 */ u8* dhtPtr[4];
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/* 0x24 */ void* imageData;
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/* 0x28 */ u32 mode; // 0 if Y V0 is 1 and 2 if Y V0 is 2
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/* 0x30 */ OSScTask scTask;
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/* 0x98 */ OSMesgQueue mq;
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/* 0xB0 */ OSMesg msg;
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/* 0xB4 */ JpegWork* workBuf;
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} JpegContext; // size = 0xB8
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typedef struct JpegDecoderState {
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/* 0x00 */ u32 byteIdx;
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/* 0x04 */ u8 bitIdx;
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/* 0x05 */ u8 dontSkip;
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/* 0x08 */ u32 curWord;
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/* 0x0C */ s16 unk_0C;
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/* 0x0E */ s16 unk_0E;
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/* 0x10 */ s16 unk_10;
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} JpegDecoderState; // size = 0x14
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s32 Jpeg_Decode(void* data, void* zbuffer, void* work, u32 workSize);
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void JpegUtils_ProcessQuantizationTable(u8* dqt, JpegQuantizationTable* qt, u8 count);
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u32 JpegUtils_ProcessHuffmanTable(u8* dht, JpegHuffmanTable* ht, u8* codesLengths, u16* codes, u8 count);
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s32 JpegDecoder_Decode(JpegDecoder* decoder, u16* mcuBuff, s32 count, u8 isFollowing, JpegDecoderState* state);
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#endif
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