c code to open a binary/raw video file

[Tejaswi Sharma]

hello, i m working on H.264 encoder, i m new to dis and if anyone can suggest me how to code using c code then i m more thankful to them... plz let me know how to open a binary file using c, i have tried and have got zero errors but end result its not opening :(

[weaknessforcats]

How about posting your code for opening the file?

[Tejaswi Sharma]

#include <stdio.h>
#include <stdlib.h>
 
int main()
{
  char *buffer ;
  FILE *fh, *fs ;
	  fh= fopen("display name.c", "rb");
 
 
  fs= fopen (" loadout.c","w");

if (fs==NULL)
	{
		fseek(fh, 0L, SEEK_END);
    long s = ftell(fh);
    rewind(fh);
    buffer == malloc(s);
    if ( buffer != NULL )
    {
      fread(buffer, s, 1, fh);
      // we can now close the file
      fclose(fh); fh = NULL;
 
      // do something, e.g.
      fwrite(buffer, s, 1, stdout);
 
      free(buffer);
    }
    if (fh != NULL) fclose(fh);
	}

  return EXIT_SUCCESS;
}

[weaknessforcats]

This code does not work:

buffer == malloc(s);

First, you meant the assignment operator.

Second, malloc returns void* and this cannot be assigned to a char* uness you use a cast:

  buffer = (char*)malloc(s);

Third, this code:

 if (fs==NULL)
	{
		fseek(fh, 0L, SEEK_END);
    long s = ftell(fh);
    rewind(fh);
etc...

probably wants to be:

if (fs!=NULL)
	{
		fseek(fh, 0L, SEEK_END);
    long s = ftell(fh);
    rewind(fh);
etc...

because if fs is zero, your file did not open.

I got everything to compile but did not run the code