void JB_Load(FILE *inf)
{
size_t maxlinelength; //I will count the length of the longest line (including NULL char/newline) in the
//input file so I can create a buffer large enough to read any line into
char *buffer; //Will be an array large enough to hold the largest line of text from input file
unsigned long index=0; //Used to index within a line of input text
unsigned long index2=0; //Used to index within an output buffer
char textbuffer[101]={0}; //Allow for a 100 character lyric text
unsigned long processedctr=0; //The current line number being processed in the text file
unsigned long bufferctr=0; //Ensure textbuffer[] isn't overflowed
char notename=0; //Used for parsing note names
double timestamp=0.0; //Used to read timestamp
char linetype=0; //Is set to one of the following: 1 = lyric, 2 = line break, 3 = end of file
unsigned char pitch=0; //Stores the lyric pitch transposed to middle octave
int readerrordetected = 0;
assert_wrapper(inf != NULL); //This must not be NULL
//Find the length of the longest line
maxlinelength=FindLongestLineLength(inf,1);
//Allocate memory buffer large enough to hold any line in this file
buffer=(char *)malloc_err(maxlinelength);
(void) fgets_err(buffer,(int)maxlinelength,inf); //Read first line of text, capping it to prevent buffer overflow
if(Lyrics.verbose) printf("\nImporting C9C lyrics from file \"%s\"\n\n",Lyrics.infilename);
processedctr=0; //This will be set to 1 at the beginning of the main while loop
while(!feof(inf) && !readerrordetected) //Until end of file is reached or fgets() returns an I/O error
{
processedctr++;
if(Lyrics.verbose)
printf("\tProcessing line %lu\n",processedctr);
index = 0;
//Read end of file
if(strcasestr_spec(buffer,"ENDFILE"))
{ //A line starting with "ENDFILE" denotes the end of the lyric entries
linetype = 3;
}
//Read the lyric pitch
else if(isalpha(buffer[index]))
{ //A line starting with an alphabetical letter is a normal lyric entry
linetype = 1;
notename = toupper(buffer[index++]);
if(isalpha(buffer[index]))
index++; //The first lyric entry seems to repeat the note name
pitch=60; //The pitches will be interpreted as ranging from C4 to B4
switch(notename) //Add value of note in current octave
{
case 'B':
pitch+=11;
break;
case 'A':
pitch+=9;
break;
case 'G':
pitch+=7;
break;
case 'F':
pitch+=5;
break;
case 'E':
pitch+=4;
break;
case 'D':
pitch+=2;
break;
default:
break;
}
if(buffer[index] == '#')
{ //If the note name is followed by a sharp character,
pitch++; //increase the pitch by one half step
index++; //Seek past the sharp character
}
while(buffer[index] != ':')
{ //Seek to the expected colon character
if(buffer[index] == '\0')
{ //The line ends unexpectedly
printf("Error: Invalid lyric entry in line %lu during C9C lyric import (colon missing)\nAborting\n",processedctr);
exit_wrapper(1);
}
index++;
}
index++; //Seek beyond the colon
//Read the lyric text
index2=bufferctr=0;
while(!isspace(buffer[index]))
{ //Until whitespace is reached
if(buffer[index] == '\0')
{ //The line ends unexpectedly
printf("Error: Invalid lyric entry in line %lu during C9C lyric import (whitespace missing)\nAborting\n",processedctr);
exit_wrapper(2);
}
textbuffer[index2++] = buffer[index++]; //Copy the character to a buffer
bufferctr++;
if(bufferctr == 100)
{ //Unexpectedly long lyric reached
printf("Error: Invalid lyric entry in line %lu during C9C lyric import (lyric is too long)\nAborting\n",processedctr);
exit_wrapper(3);
}
}
textbuffer[index2++] = '\0'; //Terminate the string
}//A line starting with an alphabetical letter is a normal lyric entry
//Read line break
else if(buffer[index] == '-')
{ //A line starting with "--:S" is the start of a period of silence between lyrics (will be treated as a line break)
linetype = 2;
}
else
{ //Invalid input
printf("Error: Invalid input \"%s\" in line %lu during C9C import\nAborting\n",&(buffer[index]),processedctr);
exit_wrapper(4);
}
//Seek to timestamp
while(!isdigit(buffer[index]))
{ //Until a number (the timestamp) is reached
if(buffer[index] == '\0')
{ //The line ends unexpectedly
printf("Error: Invalid line break entry in line %lu during C9C lyric import (timestamp missing)\nAborting\n",processedctr);
exit_wrapper(5);
}
index++;
}
//Read timestamp
if(sscanf(&(buffer[index]), "%20lf", ×tamp) != 1)
{ //Double floating point value didn't parse
printf("Error: Invalid lyric entry in line %lu during C9C lyric import (error parsing timestamp)\nAborting\n",processedctr);
exit_wrapper(6);
}
timestamp *= 1000.0; //Convert to milliseconds
//Adjust previous lyric's end position
if(Lyrics.lastpiece)
{ //If there was a previous lyric
unsigned long length;
assert_wrapper(Lyrics.lastpiece->lyric != NULL);
length = (unsigned long)strlen(Lyrics.lastpiece->lyric);
Lyrics.lastpiece->duration = timestamp + 0.5 - Lyrics.realoffset - Lyrics.lastpiece->start; //Remember to offset start by realoffset, otherwise Lyrics.lastpiece->start could be the larger operand, causing an overflow
if(Lyrics.lastpiece->lyric[length - 1] == '-')
{ //If the previous lyric ended in a hyphen, the previous lyric lasts all the way up to the start of this one
Lyrics.lastpiece->groupswithnext=1; //The previous lyric piece will group with this one
}
else
{ //Otherwise space out the lyrics a bit, 1/32 second was suggested
if(Lyrics.lastpiece->duration > 31)
Lyrics.lastpiece->duration -= 31; //31ms ~= 1 sec/32
}
}
//Add lyric
if(linetype == 1) //If this line defined a new lyric
{
//Track for pitch changes, enabling Lyrics.pitch_tracking if applicable
if((Lyrics.last_pitch != 0) && (Lyrics.last_pitch != pitch)) //There's a pitch change
Lyrics.pitch_tracking=1;
Lyrics.last_pitch=pitch; //Consider this the last defined pitch
if(Lyrics.line_on != 1) //If we're at this point, there should be a line of lyrics in progress
CreateLyricLine();
AddLyricPiece(textbuffer,timestamp + 0.5,timestamp + 0.5,pitch,0); //Add lyric with no defined duration
}
//Add line break
else if(linetype == 2)
{ //If this line defined a line break
EndLyricLine();
Lyrics.lastpiece = NULL; //Prevent the first lyric from the new line from altering the previous lyric's duration, which was set by the line break position
}
//End processing
else
break;
if(fgets(buffer, (int)maxlinelength,inf) == NULL) //Read next line of text, so the EOF condition can be checked, don't exit on EOF
readerrordetected = 1;
}//while(!feof(inf) && !readerrordetected)
free(buffer); //No longer needed, release the memory before exiting function
ForceEndLyricLine();
RecountLineVars(Lyrics.lines); //Rebuild line durations since this lyric format required adjusting timestamps after lines were parsed
if(Lyrics.verbose) printf("C9C import complete. %lu lyrics loaded\n\n",Lyrics.piececount);
}
void SRT_Load(FILE *inf)
{
char *buffer; //Buffer used to read from input file
char *temp=NULL; //Used for string processing
unsigned long processedctr=0; //The current line number being processed in the text file
size_t maxlinelength; //I will count the length of the longest line (including NULL char/newline) in the
//input file so I can create a buffer large enough to read any line into
unsigned long startstamp=0,endstamp=0;
unsigned long ctr=0;
assert_wrapper(inf != NULL); //This must not be NULL
//Find the length of the longest line
maxlinelength=FindLongestLineLength(inf,1);
//Allocate buffers to read file line by line
buffer=malloc_err(maxlinelength);
//Process each line of input file
if(Lyrics.verbose)
printf("\nImporting SRT subtitles from file \"%s\"\n\n",Lyrics.infilename);
processedctr=0; //This will be set to 1 at the beginning of the main while loop
while(fgets(buffer,(int)maxlinelength,inf) != NULL) //Read lines until end of file is reached, don't exit on EOF
{
processedctr++;
//Find first timestamp in this line
temp=SeekNextSRTTimestamp(buffer); //Point temp to first timestamp
if(temp == NULL) //If there is none, skip this line
continue; //Skip processing and read next line
startstamp=ConvertSRTTimestamp(&temp,NULL);
//Find second timestamp in this line
temp=SeekNextSRTTimestamp(temp); //Point temp to second timestamp
if(temp == NULL)
{
if(Lyrics.verbose) printf("Warning: Line #%lu does not contain the ending timestamp. Ignoring\n",processedctr);
continue; //Skip processing and read next line
}
endstamp=ConvertSRTTimestamp(&temp,NULL);
//Read next line, which is expected to be the subtitle entry
if(fgets(buffer,(int)maxlinelength,inf) == NULL)
break; //If another line couldn't be read, exit loop
ctr = (unsigned long)strlen(buffer); //Find index of the string's NULL terminator
while((ctr > 0) && ((buffer[ctr-1] == '\n') || (buffer[ctr-1] == '\r')))
{ //If the string isn't empty and the last character is a newline or carriage return
buffer[ctr-1] = '\0'; //Truncate it from the string
ctr--; //Track the position of the end of the string
}
//Add lyric piece as a lyric line
CreateLyricLine();
AddLyricPiece(buffer,startstamp,endstamp,PITCHLESS,0); //Write lyric with no defined pitch
EndLyricLine();
}//end while(fgets(buffer,maxlinelength,inf) != NULL)
ForceEndLyricLine();
//Release memory buffers and return
free(buffer);
if(Lyrics.verbose) printf("SRT import complete. %lu subtitles loaded\n\n",Lyrics.piececount);
}