/* * jcapimin.c * * Copyright (C) 1994-1998, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains application interface code for the compression half * of the JPEG library.  These are the "minimum" API routines that may be * needed in either the normal full-compression case or the transcoding-only * case. * * Most of the routines intended to be called directly by an application * are in this file or in jcapistd.c.  But also see jcparam.c for * parameter-setup helper routines, jcomapi.c for routines shared by * compression and decompression, and jctrans.c for the transcoding case. */#define JPEG_INTERNALS#include "jinclude.h"#include "jpeglib.h"#include "portab.h"/* * Initialization of a JPEG compression object. * The error manager must already be set up (in case memory manager fails). *///pwhsu++:20031013   GLOBAL(void)jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize){  int i;  /* Guard against version mismatches between library and caller. */  cinfo->mem = NULL;		/* so jpeg_destroy knows mem mgr not called *///  if (version != JPEG_LIB_VERSION)//    ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version);  if (structsize != SIZEOF(struct jpeg_compress_struct))    ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, 	     (int) SIZEOF(struct jpeg_compress_struct), (int) structsize);  /* For debugging purposes, we zero the whole master structure.   * But the application has already set the err pointer, and may have set   * client_data, so we have to save and restore those fields.   * Note: if application hasn't set client_data, tools like Purify may   * complain here.   */  {    struct jpeg_error_mgr * err = cinfo->err;    void * client_data = cinfo->client_data; /* ignore Purify complaint here *///    MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct));	//pwhsu--:20040128 memzero    cinfo->err = err;    cinfo->client_data = client_data;  }  cinfo->is_decompressor = FALSE;	//pwhsu:20031013 it's TRUE at decoder  /* Initialize a memory manager instance for this object */  jinit_memory_mgr((j_common_ptr) cinfo);  /* Zero out pointers to permanent structures. */  cinfo->progress = NULL;  cinfo->dest = NULL;  cinfo->comp_info = NULL;  for (i = 0; i < NUM_QUANT_TBLS; i++)    cinfo->quant_tbl_ptrs[i] = NULL;  for (i = 0; i < NUM_HUFF_TBLS; i++) {    cinfo->dc_huff_tbl_ptrs[i] = NULL;    cinfo->ac_huff_tbl_ptrs[i] = NULL;  }  cinfo->script_space = NULL;  cinfo->input_gamma = 1.0;	/* in case application forgets */  /* OK, I'm ready */  cinfo->global_state = CSTATE_START;}/* * Destruction of a JPEG compression object */GLOBAL(void)jpeg_destroy_compress (j_compress_ptr cinfo){  jpeg_destroy((j_common_ptr) cinfo); /* use common routine */}/* * Abort processing of a JPEG compression operation, * but don't destroy the object itself. */GLOBAL(void)jpeg_abort_compress (j_compress_ptr cinfo){  jpeg_abort((j_common_ptr) cinfo); /* use common routine */}/* * Forcibly suppress or un-suppress all quantization and Huffman tables. * Marks all currently defined tables as already written (if suppress) * or not written (if !suppress).  This will control whether they get emitted * by a subsequent jpeg_start_compress call. * * This routine is exported for use by applications that want to produce * abbreviated JPEG datastreams.  It logically belongs in jcparam.c, but * since it is called by jpeg_start_compress, we put it here --- otherwise * jcparam.o would be linked whether the application used it or not. */GLOBAL(void)jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress){  int i;  JQUANT_TBL * qtbl;  JHUFF_TBL * htbl;  for (i = 0; i < NUM_QUANT_TBLS; i++) {    if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL)      qtbl->sent_table = suppress;  }  for (i = 0; i < NUM_HUFF_TBLS; i++) {    if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL)      htbl->sent_table = suppress;    if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL)      htbl->sent_table = suppress;  }}/* * Finish JPEG compression. * * If a multipass operating mode was selected, this may do a great deal of * work including most of the actual output. */GLOBAL(void)jpeg_finish_compress (j_compress_ptr cinfo){  JDIMENSION iMCU_row; // unsigned int stuffnum;  int i;  int x, y;  int a;	do {		READ_CPSTS(sreg);	} while ((sreg & 32) == 0);	  if (cinfo->global_state == CSTATE_SCANNING ||      cinfo->global_state == CSTATE_RAW_OK) {    /* Terminate first pass */    if (cinfo->next_scanline < cinfo->image_height)      ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);    (*cinfo->master->finish_pass) (cinfo);					//pwhsu:20031014 finish_pass_master()	//finish_pass_master1(cinfo);  } else if (cinfo->global_state != CSTATE_WRCOEFS)    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  /* Perform any remaining passes */  while (! cinfo->master->is_last_pass) {    (*cinfo->master->prepare_for_pass) (cinfo);    for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) {      if (cinfo->progress != NULL) {	cinfo->progress->pass_counter = (long) iMCU_row;	cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows;	(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);      }    }    (*cinfo->master->finish_pass) (cinfo);  }  /* Write EOI, do final cleanup */  write_file_trailer1(cinfo);	mFa526DrainWrBuf ();  //pwhsu++:20040219  //check autobuffering is done	do {		READ_VLDSTS(vldreg);	} while ((vldreg & 1024) == 0);  //Read the system mem pointer and local mem pointer  READ_ABADR(smadr);			//Read system memory pointer (64 byte)//  READ_BALR (x);			//Read local memory pointer (words)  READ_BALR (x);			//Read local memory pointer (byres)  READ_VADR (y);		    //Read local memory pointer (bits)      #if 1  y = (y & 0xff)/8 + x & 0x3f;#else  x = x & 0x3f;  y = y & 0xff;  y = y/8 + x;#endif  smadr = smadr - (unsigned int)outbitstr;		//total bytes in system memory  bitslen = y + smadr;  x = (256 - x) >> 1;//  for(i=0;i<32;i++){  for(i = x; i > 0; i--){	  BitstreamPutBits(0x0, 16);  }	mFa526DrainWrBuf ();	do {		READ_VLDSTS(vldreg);	} while ((vldreg & 1024) == 0);  SET_VLDCTL(32);		//ABF stop   /* We can use jpeg_abort to release memory and reset global_state */  jpeg_abort((j_common_ptr) cinfo);}/* * Write a special marker. * This is only recommended for writing COM or APPn markers. * Must be called after jpeg_start_compress() and before * first call to jpeg_write_scanlines() or jpeg_write_raw_data(). */GLOBAL(void)jpeg_write_marker (j_compress_ptr cinfo, int marker,		   const JOCTET *dataptr, unsigned int datalen){  JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val));  if (cinfo->next_scanline != 0 ||      (cinfo->global_state != CSTATE_SCANNING &&       cinfo->global_state != CSTATE_RAW_OK &&       cinfo->global_state != CSTATE_WRCOEFS))    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);  //(*cinfo->marker->write_marker_header) (cinfo, marker, datalen);  write_marker_header1(cinfo, marker, datalen);  write_marker_byte = cinfo->marker->write_marker_byte;	/* copy for speed */  while (datalen--) {    (*write_marker_byte) (cinfo, *dataptr);    dataptr++;  }}