lib/Jedi-Academy
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial commit.

Browse Source
This commit is contained in:
Jim Gray
2013-04-04 14:32:05 -07:00
parent ba5c81da32
commit d71d53e8ec
2180 changed files with 1393544 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

141
code/mp3code/mp3struct.h Normal file
View File

@@ -0,0 +1,141 @@
// Filename: mp3struct.h
//
// this file is my struct to gather all loose MP3 global vars into one struct so we can do multiple-stream decompression
//
#ifndef MP3STRUCT_H
#define MP3STRUCT_H
#pragma warning (disable : 4201 ) // nonstandard extension used : nameless struct/union
#include "small_header.h" // for SAMPLE and IN_OUT
typedef void (*SBT_FUNCTION) (float *sample, short *pcm, int n);
typedef void (*XFORM_FUNCTION) (void *pcm, int igr);
typedef IN_OUT(*DECODE_FUNCTION) (unsigned char *bs, unsigned char *pcm);
typedef struct
{
union
{
struct
{
SBT_FUNCTION sbt;
float cs_factor[3][64]; // 768 bytes
int nbat[4];
int bat[4][16];
int max_sb;
int stereo_sb;
int bit_skip;
float* cs_factorL1;
int nbatL1;
};//L1_2;
struct
{
SBT_FUNCTION sbt_L3;
XFORM_FUNCTION Xform;
DECODE_FUNCTION decode_function;
SAMPLE sample[2][2][576]; // if this isn't kept per stream then the decode breaks up
// the 4k version of these 2 seems to work for everything, but I'm reverting to original 8k for safety jic.
//
#define NBUF (8*1024)
#define BUF_TRIGGER (NBUF-1500)
// #define NBUF (4096) // 2048 works for all except 133+ kbps VBR files, 4096 copes with these
// #define BUF_TRIGGER ((NBUF/4)*3)
unsigned char buf[NBUF];
int buf_ptr0;
int buf_ptr1;
int main_pos_bit;
int band_limit_nsb;
int nBand[2][22]; /* [long/short][cb] */
int sfBandIndex[2][22]; /* [long/short][cb] */
int half_outbytes;
int crcbytes;
int nchan;
int ms_mode;
int is_mode;
unsigned int zero_level_pcm;
int mpeg25_flag;
int band_limit;
int band_limit21;
int band_limit12;
int gain_adjust;
int ncbl_mixed;
};//L3;
};
// from csbt.c...
//
// if this isn't kept per stream then the decode breaks up
signed int vb_ptr; //
signed int vb2_ptr; //
float vbuf[512]; //
float vbuf2[512]; // this can be lost if we stick to mono samples
// L3 only...
//
int sr_index; // L3 only (99%)
int id;
// any type...
//
int outvalues;
int outbytes;
int framebytes;
int pad;
int nsb_limit;
// stuff added now that the game uses streaming MP3s...
//
byte *pbSourceData; // a useful dup ptr only, this whole struct will be owned by an sfx_t struct that has the actual data ptr field
int iSourceBytesRemaining;
int iSourceReadIndex;
int iSourceFrameBytes;
#ifdef _DEBUG
int iSourceFrameCounter; // not really important
#endif
int iBytesDecodedTotal;
int iBytesDecodedThisPacket;// not sure how useful this will be, it's only per-frame, so will always be full frame size (eg 2304 or below for mono) except possibly for the last frame?
int iRewind_FinalReductionCode;
int iRewind_FinalConvertCode;
int iRewind_SourceBytesRemaining;
int iRewind_SourceReadIndex;
byte bDecodeBuffer[2304*2]; // *2 to allow for stereo now
int iCopyOffset; // used for painting to DMA-feeder, since 2304 won't match the size it wants
// some new stuff added for dynamic music, to allow "how many seconds left to play" queries...
//
// ( m_lengthInSeconds = ((iUnpackedDataLength / iRate) / iChannels) / iWidth; )
//
// Note that these fields are only valid/initialised if MP3Stream_InitPlayingTimeFields() was called.
// If not, this->iTimeQuery_UnpackedLength will be zero.
//
int iTimeQuery_UnpackedLength;
int iTimeQuery_SampleRate;
int iTimeQuery_Channels;
int iTimeQuery_Width;
} MP3STREAM, *LP_MP3STREAM;
#define MP3STUFF_KNOWN
extern LP_MP3STREAM pMP3Stream;
extern int bFastEstimateOnly;
#pragma warning (default : 4201 ) // nonstandard extension used : nameless struct/union
#pragma warning (disable : 4711 ) // function 'xxxx' selected for automatic inline expansion
#endif // #ifndef MP3STRUCT_H
////////////////// eof /////////////////////