/*===========================================================================*
 * param.c              
 *                      
 *  Procedures to read in parameter file  
 *                                    
 *===========================================================================*/

/* COPYRIGHT INFORMATION IS AT THE END OF THIS FILE */

#define _DEFAULT_SOURCE 1
    /* New name for SVID & BSD source defines */
#define _XOPEN_SOURCE 500
    /* This makes sure popen() is in stdio.h.  In GNU libc 2.1.3, 
     _POSIX_C_SOURCE = 2 is sufficient, but on AIX 4.3, the higher level
     _XOPEN_SOURCE is required.  2000.09.09 

     This also makes sure strdup() is in string.h.
    */
#define _BSD_SOURCE 1
    /* Make sure string.h defines strncasecmp */


/*==============*
 * HEADER FILES *
 *==============*/

#include <assert.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include "nstring.h"
#include "mallocvar.h"
#include "all.h"
#include "mtypes.h"
#include "mpeg.h"
#include "motion_search.h"
#include "prototypes.h"
#include "parallel.h"
#include "readframe.h"
#include "fsize.h"
#include "frames.h"
#include "jpeg.h"
#include "input.h"
#include "frametype.h"
#include "param.h"

#include "rate.h"
#include "opts.h"

/*===========*
 * CONSTANTS *
 *===========*/

#define INPUT_ENTRY_BLOCK_SIZE   128

#define FIRST_OPTION           0
#define OPTION_GOP             0
#define OPTION_PATTERN         1
#define OPTION_PIXEL           2
#define OPTION_PQSCALE         3
#define OPTION_OUTPUT          4
#define OPTION_RANGE           5
#define OPTION_PSEARCH_ALG     6
#define OPTION_IQSCALE         7
#define OPTION_INPUT_DIR       8
#define OPTION_INPUT_CONVERT   9
#define OPTION_INPUT          10
#define OPTION_BQSCALE        11
#define OPTION_BASE_FORMAT    12
#define OPTION_SPF            13
#define OPTION_BSEARCH_ALG    14
#define OPTION_REF_FRAME      15
#define LAST_OPTION           15

/* put any non-required options after LAST_OPTION */
#define OPTION_RESIZE         16
#define OPTION_IO_CONVERT     17
#define OPTION_SLAVE_CONVERT  18
#define OPTION_IQTABLE        19
#define OPTION_NIQTABLE       20
#define OPTION_FRAME_RATE     21
#define OPTION_ASPECT_RATIO   22
#define OPTION_YUV_SIZE       23
#define OPTION_SPECIFICS      24
#define OPTION_DEFS_SPECIFICS 25
#define OPTION_BUFFER_SIZE    26
#define OPTION_BIT_RATE       27
#define OPTION_USER_DATA      28
#define OPTION_YUV_FORMAT     29
#define OPTION_GAMMA          30
#define OPTION_PARALLEL       31
#define OPTION_FRAME_INPUT    32
#define OPTION_GOP_INPUT      33

#define NUM_OPTIONS           33

/*==================*
 * GLOBAL VARIABLES *
 *==================*/

char outputFileName[256];
int outputWidth, outputHeight;
char inputConversion[1024];
char ioConversion[1024];
char slaveConversion[1024];
char yuvConversion[256];
char specificsFile[256],specificsDefines[1024]="";
bool GammaCorrection=FALSE;
float GammaValue;
char userDataFileName[256]={0};
bool specificsOn = FALSE;
char currentGOPPath[MAXPATHLEN];
char currentFramePath[MAXPATHLEN];
bool keepTempFiles;
int numMachines;
char machineName[MAX_MACHINES][256];
char userName[MAX_MACHINES][256];
char executable[MAX_MACHINES][1024];
char remoteParamFile[MAX_MACHINES][1024];
bool remote[MAX_MACHINES];
int mult_seq_headers = 0;  /* 0 for none, N for header/N GOPs */


extern char currentPath[MAXPATHLEN];

static const char * const optionText[LAST_OPTION+1] = { 
    "GOP_SIZE", "PATTERN", "PIXEL", "PQSCALE",
    "OUTPUT", "RANGE", "PSEARCH_ALG", "IQSCALE", "INPUT_DIR",
    "INPUT_CONVERT", "INPUT", "BQSCALE", "BASE_FILE_FORMAT",
    "SLICES_PER_FRAME", "BSEARCH_ALG", "REFERENCE_FRAME"};
static bool optionSeen[NUM_OPTIONS+1];
    /* optionSeen[x] means we have seen option x in the parameter file we've
       been reading.
    */


/*===========================================================================*
 *
 * SkipSpacesTabs
 *
 *  skip all spaces and tabs
 *
 * RETURNS: point to next character not a space or tab
 *
 * SIDE EFFECTS:    none
 *
 *===========================================================================*/
static const char *
SkipSpacesTabs(const char * const start) {

    const char * p;

    for (p = start; *p == ' ' || *p == '\t'; ++p);

    return p;
}



/*===========================================================================*
 *
 * GetAspectRatio
 *
 * take a character string with the pixel aspect ratio
 * and returns the correct aspect ratio code for use in the Sequence header
 *
 * RETURNS: aspect ratio code as per MPEG-I spec
 *
 * SIDE EFFECTS:    none
 *
 *===========================================================================*/
static int
GetAspectRatio(const char * const p)
{
  float   ratio;
  int     ttRatio;
  int     retval;

  sscanf(p, "%f", &ratio);
  ttRatio = (int)(0.5+ratio*10000.0);

  if ( ttRatio == 10000 )         retval = 1;
  else if ( ttRatio ==  6735 )    retval = 2;
  else if ( ttRatio ==  7031 )    retval = 3;
  else if ( ttRatio ==  7615 )    retval = 4;
  else if ( ttRatio ==  8055 )    retval = 5;
  else if ( ttRatio ==  8437 )    retval = 6;
  else if ( ttRatio ==  8935 )    retval = 7;
  else if ( ttRatio ==  9157 )    retval = 8;
  else if ( ttRatio ==  9815 )    retval = 9;
  else if ( ttRatio == 10255 )    retval = 10;
  else if ( ttRatio == 10695 )    retval = 11;
  else if ( ttRatio == 10950 )    retval = 12;
  else if ( ttRatio == 11575 )    retval = 13;
  else if ( ttRatio == 12015 )    retval = 14;
  else {
    fprintf(stderr,"INVALID ASPECT RATIO: %s frames/sec\n", p);
    exit(1);
  }
  return retval;
}



/*===========================================================================*
 *
 * ReadMachineNames
 *
 *  read a list of machine names for parallel execution
 *
 * RETURNS: nothing
 *
 * SIDE EFFECTS:    machine info updated
 *
 *===========================================================================*/
static void
ReadMachineNames(FILE * const fpointer)
{
  char    input[256];
  const char *charPtr;

  while ( (fgets(input, 256, fpointer) != NULL) &&
     (strncmp(input, "END_PARALLEL", 12) != 0) ) {
    if ( input[0] == '#' || input[0] == '\n') {
      continue;
    }

    if ( strncmp(input, "REMOTE", 6) == 0 ) {
      charPtr = SkipSpacesTabs(&input[6]);
      remote[numMachines] = TRUE;

      sscanf(charPtr, "%s %s %s %s", machineName[numMachines],
         userName[numMachines], executable[numMachines],
         remoteParamFile[numMachines]);
    } else {
      remote[numMachines] = FALSE;

      sscanf(input, "%s %s %s", machineName[numMachines],
         userName[numMachines], executable[numMachines]);
    }

    numMachines++;
  }
}


/*===========================================================================*
 *
 * GetFrameRate
 *
 * take a character string with the input frame rate 
 * and return the correct frame rate code for use in the Sequence header
 *
 * RETURNS: frame rate code as per MPEG-I spec
 *
 * SIDE EFFECTS:    none
 *
 *===========================================================================*/
static int
GetFrameRate(const char * const p)
{
  float   rate;
  int     thouRate;
  int     retval;

  sscanf(p, "%f", &rate);
  thouRate = (int)(0.5+1000.0*rate);

  if ( thouRate == 23976 )         retval = 1;
  else if ( thouRate == 24000 )    retval = 2;
  else if ( thouRate == 25000 )    retval = 3;
  else if ( thouRate == 29970 )    retval = 4;
  else if ( thouRate == 30000 )    retval = 5;
  else if ( thouRate == 50000 )    retval = 6;
  else if ( thouRate == 59940 )    retval = 7;
  else if ( thouRate == 60000 )    retval = 8;
  else {
    fprintf(stderr,"INVALID FRAME RATE: %s frames/sec\n", p);
    exit(1);
  }
  return retval;
}



static void
mergeInputSource(struct inputSource *       const baseSourceP,
                 const struct inputSource * const addedSourceP) {

    unsigned int i;

    baseSourceP->ifArraySize += addedSourceP->numInputFileEntries;
    REALLOCARRAY_NOFAIL(baseSourceP->inputFileEntries, 
                        baseSourceP->ifArraySize);
    for (i = 0; i < addedSourceP->numInputFileEntries; ++i)
        baseSourceP->inputFileEntries[baseSourceP->numInputFileEntries++] =
            addedSourceP->inputFileEntries[i];
}



/* Forward declaration for recursively called function */
static void
ReadInputFileNames(FILE *               const fpointer, 
                   const char *         const endInput,
                   struct inputSource * const inputSourceP);

static void
expandBackTickLine(const char *         const input,
                   struct inputSource * const inputSourceP) {

    FILE *fp;
    char cmd[300];
    const char * start;
    const char * end;
    char cdcmd[110];

    start = &input[1];
    end = &input[strlen(input)-1];

    while (*end != '`') {
        end--;
    }

    end--;

    if (optionSeen[OPTION_INPUT_DIR])
        sprintf(cdcmd,"cd %s;",currentPath);
    else
        strcpy(cdcmd,"");

    {
        char tmp[300];
        strncpy(tmp,start,end-start+1);
        sprintf(cmd,"(%s %s)", cdcmd, tmp);
    }

    fp = popen(cmd, "r");
    if (fp == NULL) {
        pm_error("Unable to resolve backtick entry in input file list.  "
                 "Could not open piped command: '%s'", cmd);
    } else {
        struct inputSource subInputSource;
        ReadInputFileNames(fp, "HOPE-THIS_ISNT_A_FILENAME.xyz5555",
                           &subInputSource);

        mergeInputSource(inputSourceP, &subInputSource);
    }
}



static void
ReadInputFileNames(FILE *               const fpointer, 
                   const char *         const endInput,
                   struct inputSource * const inputSourceP) {
/*----------------------------------------------------------------------------
   Read a list of input file names from the parameter file.  Add 
   the information to *inputSourceP.

   If inputSourceP == NULL, read off the list, but ignore it.
-----------------------------------------------------------------------------*/
    char input[256];
    bool endStatementRead;

    /* read param file up through endInput statement.  Each line until
       endInput is a file specification.
    */
    endStatementRead = FALSE;

    while (!endStatementRead) {
        char * rc;
        rc = fgets(input, sizeof(input), fpointer);

        if (feof(fpointer))
            pm_error("End of file before section end statement '%s'",
                     endInput);
        else if (rc == NULL)
            pm_error("Error reading file names from parameter file.");
        else {
            if (strncmp(input, endInput, strlen(endInput)) == 0)
                endStatementRead = TRUE;
            else if ((input[0] == '#') || (input[0] == '\n')) { 
                /* It's a comment or blank line.  Ignore it */
            } else if (input[0] == '`' ) {
                expandBackTickLine(input, inputSourceP);
            } else {
                /* get rid of trailing whitespace including newline */
                while (ISSPACE(input[strlen(input)-1]))
                    input[strlen(input)-1] = '\0';
                if (inputSourceP)
                    AddInputFiles(inputSourceP, input);
            }
        }
    }
}



static void
initOptionSeen(void) {

    unsigned int index;
    
    for (index = FIRST_OPTION; index < NUM_OPTIONS; ++index)
        optionSeen[index] = FALSE;
}



static void
verifyNoMissingEncodeFramesOption(void) {
    if (!optionSeen[OPTION_GOP])
        pm_error("GOP_SIZE option missing");
    if (!optionSeen[OPTION_PATTERN])
        pm_error("PATTERN option missing");
    if (!optionSeen[OPTION_PIXEL])
        pm_error("PIXEL option missing");
    if (!optionSeen[OPTION_PQSCALE])
        pm_error("PQSCALE option missing");
    if (!optionSeen[OPTION_OUTPUT])
        pm_error("OUTPUT option missing");
    if (!optionSeen[OPTION_RANGE])
        pm_error("RANGE option missing");
    if (!optionSeen[OPTION_PSEARCH_ALG])
        pm_error("PSEARCH_ALG option missing");
    if (!optionSeen[OPTION_IQSCALE])
        pm_error("IQSCALE option missing");
    if (!optionSeen[OPTION_INPUT_DIR])
        pm_error("INPUT_DIR option missing");
    if (!optionSeen[OPTION_INPUT_CONVERT])
        pm_error("INPUT_CONVERT option missing");
    if (!optionSeen[OPTION_BQSCALE])
        pm_error("BQSCALE option missing");
    if (!optionSeen[OPTION_BASE_FORMAT])
        pm_error("BASE_FILE_FORMAT option missing");
    if (!optionSeen[OPTION_SPF])
        pm_error("SLICES_PER_FRAME option missing");
    if (!optionSeen[OPTION_BSEARCH_ALG])
        pm_error("BSEARCH_ALG option missing");
    if (!optionSeen[OPTION_REF_FRAME])
        pm_error("REFERENCE_FRAME option missing");
}



static void
verifyNoMissingCombineGopsOption(void) {

    if (!optionSeen[OPTION_GOP_INPUT])
        pm_error("GOP_INPUT option missing");
    if (!optionSeen[OPTION_YUV_SIZE])
        pm_error("YUV_SIZE option missing");
    if (!optionSeen[OPTION_OUTPUT])
        pm_error("OUTPUT option missing");
}



static void
verifyNoMissingCombineFramesOption(void) {

    if (!optionSeen[OPTION_GOP])
        pm_error("GOP_SIZE option missing");
    if (!optionSeen[OPTION_YUV_SIZE])
        pm_error("YUV_SIZE option missing");
    if (!optionSeen[OPTION_OUTPUT])
        pm_error("OUTPUT option missing");
}



static void
verifyNoMissingOption(int  const function) {
/*----------------------------------------------------------------------------
  Verify that the parameter file contains every option it is supposed to. 
  Abort program if not.
-----------------------------------------------------------------------------*/
    switch(function) {
    case ENCODE_FRAMES:
        verifyNoMissingEncodeFramesOption();
        break;
    case COMBINE_GOPS:
        verifyNoMissingCombineGopsOption();
        break;
    case COMBINE_FRAMES:
        verifyNoMissingCombineFramesOption();
        break;
    default:
        pm_error("Internal error - impossible value for 'function': %d",
                 function);
    }
}



static void
processIqtable(FILE * const fpointer) {

    unsigned int row;
    unsigned int col;
    char input[256];

    for (row = 0; row < 8; ++row) {
        const char * charPtr;

        fgets(input, 256, fpointer);
        charPtr = input;
        if (8 != sscanf(charPtr,"%d %d %d %d %d %d %d %d",
                        &qtable[row*8+0],  &qtable[row*8+1],
                        &qtable[row*8+2],  &qtable[row*8+3],
                        &qtable[row*8+4],  &qtable[row*8+5],
                        &qtable[row*8+6],  &qtable[row*8+7])) {
            pm_error("Line %d of IQTABLE doesn't have 8 elements!", 
                     row);
        }
        for (col = 0; col < 8; ++col) {
            if ((qtable[row*8+col]<1) || (qtable[row*8+col]>255)) {
                pm_message(
                    "Warning:  IQTable Element %1d,%1d (%d) "
                    "corrected to 1-255.",
                    row+1, col+1, qtable[row*8+col]);
                qtable[row*8+col] = (qtable[row*8+col]<1)?1:255;
            }
        }
    }
            
    if (qtable[0] != 8) {
        pm_message("Warning:  IQTable Element 1,1 reset to 8, "
                   "since it must be 8.");
        qtable[0] = 8;
    }
    customQtable = qtable;
}



static void
setInputSource(int                   const function,
               struct inputSource ** const inputSourcePP,
               struct inputSource *  const inputSourceP,
               struct inputSource *  const gopInputSourceP,
               struct inputSource *  const frameInputSourceP) {
/*----------------------------------------------------------------------------
   Given three the three input sources described by the parameter
   file, 'inputSourceP', 'gopInputSourceP', and 'frameInputSourceP',
   return as *inputSourcePP the appropriate one of them for the
   function 'function', and destroy the other two.
-----------------------------------------------------------------------------*/
    switch (function) {
    case ENCODE_FRAMES:
        *inputSourcePP = inputSourceP;
        DestroyInputSource(gopInputSourceP);
        DestroyInputSource(frameInputSourceP);
        break;
    case COMBINE_GOPS:
        *inputSourcePP = gopInputSourceP;
        DestroyInputSource(inputSourceP);
        DestroyInputSource(frameInputSourceP);
        break;
    case COMBINE_FRAMES:
        *inputSourcePP = frameInputSourceP;
        DestroyInputSource(inputSourceP);
        DestroyInputSource(gopInputSourceP);
        break;
    default:
      pm_error("INTERNAL ERROR: invalid 'function' %d", function);
    }
}



/*=====================*
 * EXPORTED PROCEDURES *
 *=====================*/



static void
removeTrailingWhite(const char *  const rawLine,
                    const char ** const editedLineP) {

    char * buffer;
    char * p;

    buffer = strdup(rawLine);

    if (!buffer)
        pm_error("Unable to get memory to process parameter file");

    p = buffer + strlen(buffer) - 1;  /* Point to last character */
    
    /* Position p to just before the trailing white space (might be one
       character before beginning of string!)
    */
    while (p >= buffer && isspace(*p))
        --p;
    
    ++p;  /* Move to first trailing whitespace character */
    
    *p = '\0';  /* Chop off all the trailing whitespace */

    *editedLineP = buffer;
}



static void
readNiqTable(FILE * const fpointer) {

    unsigned int row;
    for (row = 0; row < 8; ++row) {
        char input[256];
        unsigned int col;
        fgets(input, sizeof(input), fpointer);
        if (8 != sscanf(input, "%d %d %d %d %d %d %d %d",
                        &niqtable[row*8+0],  &niqtable[row*8+1],
                        &niqtable[row*8+2],  &niqtable[row*8+3],
                        &niqtable[row*8+4],  &niqtable[row*8+5],
                        &niqtable[row*8+6],  &niqtable[row*8+7])) {
            pm_error("Line %d of NIQTABLE doesn't have 8 elements!", 
                     row);
        }
        for ( col = 0; col < 8; col++ ) {
            if ((niqtable[row*8+col]<1) || (niqtable[row*8+col]>255)) {
                pm_message(
                    "Warning:  NIQTable Element %1d,%1d (%d) "
                    "corrected to 1-255.",
                    row + 1, col + 1, niqtable[row * 8 + col]);
                niqtable[row * 8 + col] = (niqtable[row*8+col] < 1) ? 1 : 255;
            }
        }
    }

    customNIQtable = niqtable;
}



static void
processRanges(const char * const arg) {

    int numRanges;
    int a, b;

    numRanges = sscanf(arg, "%d %d", &a, &b);

    if (numRanges == 2)
        SetSearchRange(a, b);
    else if (sscanf(arg, "%d [%d]", &a, &b) == 2)
        SetSearchRange(a, b);
    else
        SetSearchRange(a, a);
}



static void
processParamLine(char const input[],
                 FILE * const fpointer,
                 bool * const yuvUsedP,
                 struct inputSource * const inputSourceP,
                 struct inputSource * const frameInputSourceP,
                 struct inputSource * const gopInputSourceP,
                 struct params * const paramP) {

    switch(input[0]) {
    case 'A':
        if (strneq(input, "ASPECT_RATIO", 12)) {
            aspectRatio = GetAspectRatio(SkipSpacesTabs(&input[12]));
            optionSeen[OPTION_ASPECT_RATIO] = TRUE;
        }
        break;
        
    case 'B':
        if (strneq(input, "BQSCALE", 7)) {
            SetBQScale(atoi(SkipSpacesTabs(&input[7])));
            optionSeen[OPTION_BQSCALE] = TRUE;
        } else if (strneq(input, "BASE_FILE_FORMAT", 16)) {
            const char * arg = SkipSpacesTabs(&input[16]);
            SetFileFormat(arg);
            if (strneq(arg, "YUV", 3) || streq(arg, "Y"))
                *yuvUsedP = TRUE;
            optionSeen[OPTION_BASE_FORMAT] = TRUE;
        } else if (strneq(input, "BSEARCH_ALG", 11)) {
            SetBSearchAlg(SkipSpacesTabs(&input[11]));
            optionSeen[OPTION_BSEARCH_ALG] = TRUE;
        } else if (strneq(input, "BIT_RATE", 8)) {
            setBitRate(SkipSpacesTabs(&input[8]));
            optionSeen[OPTION_BIT_RATE] = TRUE;
        } else if (strneq(input, "BUFFER_SIZE", 11)) {
            setBufferSize(SkipSpacesTabs(&input[11]));
            optionSeen[OPTION_BUFFER_SIZE] = TRUE;                  
        }
        break;

    case 'C':
        if (strneq(input, "CDL_FILE", 8)) {
            strcpy(specificsFile, SkipSpacesTabs(&input[8]));
            specificsOn = TRUE;
            optionSeen[OPTION_SPECIFICS] = TRUE;
        } else if (strneq(input, "CDL_DEFINES", 11)) {
            strcpy(specificsDefines, SkipSpacesTabs(&input[11]));
            optionSeen[OPTION_DEFS_SPECIFICS] = TRUE;
        }
        break;

    case 'F':
        if (strneq(input, "FRAME_INPUT_DIR", 15)) {
            const char * const arg = SkipSpacesTabs(&input[15]);
            if (strncaseeq(arg, "stdin", 5))
                SetStdinInput(frameInputSourceP);

            strcpy(currentFramePath, arg);
        } else if (strneq(input, "FRAME_INPUT", 11)) {
            ReadInputFileNames(fpointer, "FRAME_END_INPUT", 
                               frameInputSourceP->stdinUsed ? 
                               NULL : frameInputSourceP);
            optionSeen[OPTION_FRAME_INPUT] = TRUE;
        } else if (strneq(input, "FORCE_I_ALIGN", 13)) {
            forceIalign = TRUE;
        } else if (strneq(input, "FORCE_ENCODE_LAST_FRAME", 23)) {
            /* NO-OP.  We used to drop trailing B frames by default and you
               needed this option to change the last frame to I so you could
               encode all the frames.  Now we just do that all the time.  
               Why wouldn't we?
            */
        } else if (strneq(input, "FRAME_RATE", 10)) {
            frameRate = GetFrameRate(SkipSpacesTabs(&input[10]));
            frameRateRounded = (int) VidRateNum[frameRate];
            if ((frameRate % 3) == 1)
                frameRateInteger = FALSE;
            optionSeen[OPTION_FRAME_RATE] = TRUE;
        }
        break;
        
    case 'G':
        if (strneq(input, "GOP_SIZE", 8)) {
            SetGOPSize(atoi(SkipSpacesTabs(&input[8])));
            optionSeen[OPTION_GOP] = TRUE;
        } else if (strneq(input, "GOP_INPUT_DIR", 13)) {
            const char * const arg = SkipSpacesTabs(&input[13]);
            if (strncaseeq(arg, "stdin", 5))
                SetStdinInput(gopInputSourceP);

            strcpy(currentGOPPath, arg);
        } else if (strneq(input, "GOP_INPUT", 9)) {
            ReadInputFileNames(fpointer, "GOP_END_INPUT", 
                               gopInputSourceP->stdinUsed ? 
                               NULL : gopInputSourceP);
            optionSeen[OPTION_GOP_INPUT] = TRUE;
        } else if (strneq(input, "GAMMA", 5)) {
            GammaCorrection = TRUE;
            sscanf(SkipSpacesTabs(&input[5]), "%f", &GammaValue);
            optionSeen[OPTION_GAMMA] = TRUE;
        }
        break;
        
    case 'I':
        if (strneq(input, "IQSCALE", 7)) {
            SetIQScale(atoi(SkipSpacesTabs(&input[7])));
            optionSeen[OPTION_IQSCALE] = TRUE;
        } else if (strneq(input, "INPUT_DIR", 9)) {
            const char * const arg = SkipSpacesTabs(&input[9]);
            if (strncaseeq(arg, "stdin", 5))
                SetStdinInput(inputSourceP);
            strcpy(currentPath, arg);
            optionSeen[OPTION_INPUT_DIR] = TRUE;
        } else if (strneq(input, "INPUT_CONVERT", 13)) {
            strcpy(inputConversion, SkipSpacesTabs(&input[13]));
            optionSeen[OPTION_INPUT_CONVERT] = TRUE;
        } else if (streq(input, "INPUT")) {
            ReadInputFileNames(fpointer, "END_INPUT", 
                               inputSourceP->stdinUsed ?
                               NULL : inputSourceP);
            optionSeen[OPTION_INPUT] = TRUE;
        } else if (strneq(input, "IO_SERVER_CONVERT", 17)) {
            strcpy(ioConversion, SkipSpacesTabs(&input[17]));
            optionSeen[OPTION_IO_CONVERT] = TRUE;
        } else if (strneq(input, "IQTABLE", 7)) {
            processIqtable(fpointer);

            optionSeen[OPTION_IQTABLE] = TRUE;
        }
        break;

    case 'K':
        if (strneq(input, "KEEP_TEMP_FILES", 15))
            keepTempFiles = TRUE;
        break;
        
    case 'N':
      if (strneq(input, "NIQTABLE", 8)) {
          readNiqTable(fpointer);

          optionSeen[OPTION_NIQTABLE] = TRUE;
      }
      break;

    case 'O':
        if (strneq(input, "OUTPUT", 6)) {
            const char * const arg = SkipSpacesTabs(&input[6]);
            if ( whichGOP == -1 )
                strcpy(outputFileName, arg);
            else
                sprintf(outputFileName, "%s.gop.%d", arg, whichGOP);
            
            optionSeen[OPTION_OUTPUT] = TRUE;
        }
        break;
        
    case 'P':
        if (strneq(input, "PATTERN", 7)) {
            SetFramePattern(SkipSpacesTabs(&input[7]));
            optionSeen[OPTION_PATTERN] = TRUE;
        } else if (strneq(input, "PIXEL", 5)) {
            SetPixelSearch(SkipSpacesTabs(&input[5]));
            optionSeen[OPTION_PIXEL] = TRUE;
        } else if (strneq(input, "PQSCALE", 7)) {
            SetPQScale(atoi(SkipSpacesTabs(&input[7])));
            optionSeen[OPTION_PQSCALE] = TRUE;
        } else if (strneq(input, "PSEARCH_ALG", 11)) {
            SetPSearchAlg(SkipSpacesTabs(&input[11]));
            optionSeen[OPTION_PSEARCH_ALG] = TRUE;
        } else if (strneq(input, "PARALLEL_TEST_FRAMES", 20)) {
            SetParallelPerfect(FALSE);
            parallelTestFrames = atoi(SkipSpacesTabs(&input[20]));
        } else if (strneq(input, "PARALLEL_TIME_CHUNKS", 20)) {
            SetParallelPerfect(FALSE);
            parallelTimeChunks = atoi(SkipSpacesTabs(&input[20]));
        } else if (strneq(input, "PARALLEL_CHUNK_TAPER", 20)) {
            SetParallelPerfect(FALSE);
            parallelTimeChunks = -1;
        } else if (strneq(input, "PARALLEL_PERFECT", 16)) {
            SetParallelPerfect(TRUE);
        } else if (strneq(input, "PARALLEL", 8)) {
            ReadMachineNames(fpointer);
            optionSeen[OPTION_PARALLEL] = TRUE;
        }
        break;
        
    case 'R':
        if (strneq(input, "RANGE", 5)) {
            processRanges(SkipSpacesTabs(&input[5]));
            optionSeen[OPTION_RANGE] = TRUE;
        } else if (strneq(input, "REFERENCE_FRAME", 15)) {
            SetReferenceFrameType(SkipSpacesTabs(&input[15]));
            optionSeen[OPTION_REF_FRAME] = TRUE;
        } else if (strneq(input, "RSH", 3)) {
            SetRemoteShell(SkipSpacesTabs(&input[3]));
        } else if (strneq(input, "RESIZE", 6)) {
            const char * const arg = SkipSpacesTabs(&input[6]);
            sscanf(arg, "%dx%d", &outputWidth, &outputHeight);
            outputWidth &= ~(DCTSIZE * 2 - 1);
            outputHeight &= ~(DCTSIZE * 2 - 1);
            optionSeen[OPTION_RESIZE] = TRUE;
        }
        break;

    case 'S':
        if (strneq(input, "SLICES_PER_FRAME", 16)) {
            SetSlicesPerFrame(atoi(SkipSpacesTabs(&input[16])));
            optionSeen[OPTION_SPF] = TRUE;
        } else if (strneq(input, "SLAVE_CONVERT", 13)) {
            strcpy(slaveConversion, SkipSpacesTabs(&input[13]));
            optionSeen[OPTION_SLAVE_CONVERT] = TRUE;
        } else if (strneq(input, "SPECIFICS_FILE", 14)) {
            strcpy(specificsFile, SkipSpacesTabs(&input[14]));
            specificsOn = TRUE;
            optionSeen[OPTION_SPECIFICS] = TRUE;
        } else if (strneq(input, "SPECIFICS_DEFINES", 16)) {
            strcpy(specificsDefines, SkipSpacesTabs(&input[17]));
            optionSeen[OPTION_DEFS_SPECIFICS] = TRUE;
        } else if (strneq(input, "SEQUENCE_SIZE", 13)) {
            mult_seq_headers = atoi(SkipSpacesTabs(&input[13]));
        } else if (strneq(input, "SIZE", 4)) {
            const char * const arg = SkipSpacesTabs(&input[4]);
            sscanf(arg, "%dx%d", &yuvWidth, &yuvHeight);
            realWidth = yuvWidth;
            realHeight = yuvHeight;
            Fsize_Validate(&yuvWidth, &yuvHeight);
            optionSeen[OPTION_YUV_SIZE] = TRUE;
        }
        break;

    case 'T':
        if (strneq(input, "TUNE", 4)) {
            tuneingOn = TRUE;
            ParseTuneParam(SkipSpacesTabs(&input[4]));
        }
        break;

    case 'U':
        if (strneq(input, "USER_DATA", 9)) {
            strcpy(userDataFileName, SkipSpacesTabs(&input[9]));
            optionSeen[OPTION_USER_DATA] = TRUE;
        }
        break;
        
    case 'W':
        if (strneq(input, "WARN_UNDERFLOW", 14))
            paramP->warnUnderflow = TRUE;
        if (strneq(input, "WARN_OVERFLOW", 13))
            paramP->warnOverflow = TRUE;
        break;
        
    case 'Y':
        if (strneq(input, "YUV_SIZE", 8)) {
            const char * const arg = SkipSpacesTabs(&input[8]);
            sscanf(arg, "%dx%d", &yuvWidth, &yuvHeight);
            realWidth = yuvWidth;
            realHeight = yuvHeight;
            Fsize_Validate(&yuvWidth, &yuvHeight);
            optionSeen[OPTION_YUV_SIZE] = TRUE;
        } else if (strneq(input, "Y_SIZE", 6)) {
            const char * const arg = SkipSpacesTabs(&input[6]);
            sscanf(arg, "%dx%d", &yuvWidth, &yuvHeight);
            realWidth = yuvWidth;
            realHeight = yuvHeight;
            Fsize_Validate(&yuvWidth, &yuvHeight);
            optionSeen[OPTION_YUV_SIZE] = TRUE;
        } else if (strneq(input, "YUV_FORMAT", 10)) {
            strcpy(yuvConversion,  SkipSpacesTabs(&input[10]));
            optionSeen[OPTION_YUV_FORMAT] = TRUE;
        }
        break;
    }
}



void
ReadParamFile(const char *         const fileName, 
              majorProgramFunction const function,
              struct params *      const paramP) {
/*----------------------------------------------------------------------------
   Read the parameter file 'fileName' as *paramP.

   'function' slightly modifies our behavior as to what it is looking for
   in the parameter file.

   As a side effect, set machine info for parallel execution and input
   file names
-----------------------------------------------------------------------------*/
  FILE * fpointer;
  char buffer[256];
  bool yuvUsed;
  struct inputSource * inputSourceP;
      /* Contents of INPUT section */
  struct inputSource * frameInputSourceP;
      /* Contents of FRAME_INPUT section */
  struct inputSource * gopInputSourceP;
      /* Contents of GOP_INPUT section */

  fpointer = fopen(fileName, "r");
  if (fpointer == NULL)
      pm_error("Error:  Cannot open parameter file:  %s", fileName);

  CreateInputSource(&inputSourceP);
  CreateInputSource(&frameInputSourceP);
  CreateInputSource(&gopInputSourceP);

  /* should set defaults */
  numMachines = 0;
  sprintf(currentPath, ".");
  sprintf(currentGOPPath, ".");
  sprintf(currentFramePath, ".");
  SetRemoteShell("rsh");
  keepTempFiles = FALSE;
  paramP->warnOverflow = FALSE;
  paramP->warnUnderflow = FALSE;

  initOptionSeen();

  yuvUsed = FALSE;  /* initial value */

  while (fgets(buffer, 256, fpointer) != NULL) {
      const char * input;

      removeTrailingWhite(buffer, &input);

      if (strlen(input) == 0) {
          /* Ignore blank line */
      } else if (input[0] == '#') {
          /* Ignore comment */
      } else
          processParamLine(input, fpointer, &yuvUsed,
                           inputSourceP, frameInputSourceP, gopInputSourceP,
                           paramP);
              /* May read additional lines from file */

      pm_strfree(input);
  }

  fclose(fpointer);

  setInputSource(function, &paramP->inputSourceP,
                 inputSourceP, gopInputSourceP, frameInputSourceP);

  verifyNoMissingOption(function);

  /* error checking */

  if (!paramP->inputSourceP->stdinUsed &&
      paramP->inputSourceP->numInputFiles == 0)
      pm_error("You have not specified any input.  See the "
               "INPUT_DIR, INPUT, GOP_INPUT_DIR, GOP_INPUT, "
               "FRAME_INPUT_DIR, and FRAME_INPUT options");

  if (yuvUsed) {
      if (!optionSeen[OPTION_YUV_SIZE])
          pm_error("YUV format used but YUV_SIZE not given");
      
      if (!optionSeen[OPTION_YUV_FORMAT]) {
          strcpy (yuvConversion, "EYUV");
          pm_message("WARNING:  YUV format not specified; "
                     "defaulting to Berkeley YUV (EYUV)");
      }
  }

  if (paramP->inputSourceP->stdinUsed && optionSeen[OPTION_PARALLEL] )
      pm_error("stdin reading for parallel execution not enabled yet.");

  if (optionSeen[OPTION_PARALLEL] && !optionSeen[OPTION_YUV_SIZE])
      pm_error("Specify SIZE WxH for parallel encoding");

  if (optionSeen[OPTION_IO_CONVERT] != optionSeen[OPTION_SLAVE_CONVERT])
      pm_error("Must have either both IO_SERVER_CONVERT and SLAVE_CONVERT "
               "or neither");
      
  if (optionSeen[OPTION_DEFS_SPECIFICS] && !optionSeen[OPTION_SPECIFICS])
      pm_error("Does not make sense to define Specifics file options, "
               "but no specifics file!");

  SetIOConvert(optionSeen[OPTION_IO_CONVERT]);

  SetResize(optionSeen[OPTION_RESIZE]);

  if (function == ENCODE_FRAMES) {
      SetFCode();

      if (psearchAlg == PSEARCH_TWOLEVEL)
          SetPixelSearch("HALF");
  }
}


/*
 * Copyright (c) 1995 The Regents of the University of California.
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 */
