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libburn/libburn/file.h

62 lines
1.4 KiB

/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
#ifndef BURN__FILE_H
#define BURN__FILE_H
struct burn_source_file
{
char magic[4];
int datafd;
int subfd;
off_t fixed_size;
};
/* ts A70126 : burn_source_file obsoleted burn_source_fd */
/* ts A70930 */
struct burn_source_fifo {
char magic[4];
/* The fifo stays inactive and unequipped with eventual resources
until its read() method is called for the first time.
Only then burn_fifo_start() gets called, allocates the complete
resources, starts a thread with burn_fifo_source_shuffler()
which shuffles data and finally destroys the resources.
This late start is to stay modest in case of multiple tracks
in one disc.
*/
int is_started;
int thread_pid;
int thread_pid_valid;
/* the burn_source for which this fifo is acting as proxy */
struct burn_source *inp;
/* <<< up to now it was only a pipe. This is on its way out. */
int outlet[2];
/* The ring buffer mechanism */
int chunksize;
int chunks;
char *buf;
volatile int buf_writepos;
volatile int buf_readpos;
volatile int end_of_input;
volatile int input_error;
volatile int end_of_consumption;
off_t in_counter;
off_t out_counter;
};
/** The worker behind the fifo thread.
Gets started from burn_fifo_start() in async.c
*/
int burn_fifo_source_shoveller(struct burn_source *source, int flag);
#endif /* LIBBURN__FILE_H */