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-rw-r--r--src/xine-engine/nvtv/pipe.c296
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diff --git a/src/xine-engine/nvtv/pipe.c b/src/xine-engine/nvtv/pipe.c
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--- a/src/xine-engine/nvtv/pipe.c
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-/* NVTV pipe -- Dirk Thierbach <dthierbach@gmx.de>
- *
- * This file is part of nvtv, a tool for tv-output on NVidia cards.
- *
- * nvtv is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * nvtv is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- *
- * $Id: pipe.c,v 1.3 2003/05/04 01:35:06 hadess Exp $
- *
- * Contents:
- *
- * Routines to access the named pipe for server/client communication
- *
- */
-
-#include "local.h" /* before everything else */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-
-#include "pipe.h"
-
-/*
- * The communication will always include sizes and number of elements
- * sent, so even if there are version mismatches, the other end will be
- * able to properly synchronize.
- * A message consists of
- * - the command
- * - the number of arguments
- * - the size of each argument, followed by the argument itself
- */
-
-/*
- * Read a command from a pipe
- */
-
-PipeCmd pipeReadCmd (FILE *pipe)
-{
- PipeCmd cmd;
-
- DPRINTF ("pipe read cmd\n");
- fread (&cmd, sizeof(PipeCmd), 1, pipe);
- DPRINTF ("pipe read cmd, got %i\n", cmd);
- return cmd;
-}
-
-/*
- * Write a command to a pipe
- */
-
-void pipeWriteCmd (FILE *pipe, PipeCmd cmd)
-{
- DPRINTF ("pipe write cmd %i\n", cmd);
- fwrite (&cmd, sizeof(PipeCmd), 1, pipe);
- fflush (pipe);
- DPRINTF ("pipe write cmd done\n");
-}
-
-/*
- * Write arguments to a pipe. Ellipsis paramaters are:
- * size1, pointer1, size2, pointer2, ..., 0
- * Ignore zero size of null pointer arguments.
- */
-
-void pipeWriteArgs (FILE *pipe, int n, ...)
-{
- va_list ap;
- int i, s;
- void *p;
-
- DPRINTF ("pipe write args\n");
- fwrite (&n, sizeof(n), 1, pipe);
- va_start(ap, n);
- for (i = 0; i < n; i++) {
- s = va_arg(ap, int);
- p = va_arg(ap, void *);
- if (!p) s = 0;
- fwrite (&s, sizeof(s), 1, pipe);
- if (s != 0) {
- fwrite (p, s, 1, pipe);
- }
- }
- fflush (pipe);
- va_end(ap);
-}
-
-/*
- * Implements the three following read routines. Allocate elements
- * with zero size, and optionally set results.
- */
-
-int pipeReadArgsMulti (FILE *pipe, int res, int n, va_list ap)
-{
- int i, j;
- int m, s, t, r;
- void *p;
- void **q;
- int ok;
-
- r = 0;
- fread (&m, sizeof(m), 1, pipe);
- ok = (m == n);
- for (i = 0; i < m; i++) {
- fread (&t, sizeof(t), 1, pipe);
- s = va_arg(ap, int);
- p = va_arg(ap, void *);
- if (ok) {
- if (s != 0 && t != 0 && s != t) ok = 0;
- }
- if (ok) {
- r++;
- } else {
- p = NULL;
- }
- if (t == 0) p = NULL;
- if (s == 0 && p) { /* alloc zero size */
- q = (void **) p;
- p = malloc (t);
- *q = p;
- }
- if (res) { /* store result pointer */
- q = va_arg(ap, void **);
- if (q) *q = p;
- }
- if (p) {
- fread (p, t, 1, pipe);
- } else {
- for (j = 0; j < t; j++) fgetc (pipe);
- }
- }
- return r;
-}
-
-/*
- * Read arguments from a pipe. Ellipsis parameters are:
- * size_1, pointer_1, size_2, pointer_2, ..., size_n, pointer_n
- * Ignore null pointer arguments, and allocate arguments with zero size.
- * Return number of initial arguments that matched input stream.
- */
-
-int pipeReadArgs (FILE *pipe, int n, ...)
-{
- va_list ap;
- int r;
-
- DPRINTF ("pipe read args\n");
- va_start(ap, n);
- r = pipeReadArgsMulti (pipe, 0, n, ap);
- va_end(ap);
- return r;
-}
-
-/*
- * Read optional arguments from a pipe. Ellipsis parameters are:
- * size_1, pointer_1, result_1, ..., size_n, pointer_n, result_n
- * Ignore zero size or null pointer data. Return number of initial
- * arguments that matched input stream, and set each result either to
- * NULL or to pointer.
- */
-
-int pipeReadArgsOpt (FILE *pipe, int n, ...)
-{
- va_list ap;
- int r;
-
- DPRINTF ("pipe read args opt\n");
- va_start(ap, n);
- r = pipeReadArgsMulti (pipe, 1, n, ap);
- va_end(ap);
- return r;
-}
-
-/*
- * Read list from a pipe, alloc elements, and return pointer to first
- * element. The elements MUST contain the next field as first entry,
- * and a string as second entry.
- */
-
-void* pipeReadList (FILE *pipe, int size)
-{
- void *root, *p, *q;
- int i, j, n, t;
- char *s;
-
- DPRINTF ("pipe read list\n");
- root = p = NULL;
- fread (&n, sizeof(n), 1, pipe);
- n /= 2;
- for (i = 0; i < n; i++) {
- fread (&t, sizeof(t), 1, pipe);
- if (t == size) {
- q = malloc (t);
- fread (q, t, 1, pipe);
- if (p) {
- * (void **) p = q;
- } else {
- root = q;
- }
- p = q;
- } else {
- q = NULL;
- for (j = 0; j < t; j++) fgetc (pipe);
- }
- fread (&t, sizeof(t), 1, pipe);
- if (q) {
- s = NULL;
- if (t != 0) {
- s = malloc (t);
- fread (s, sizeof(char), t, pipe);
- }
- * (((char **) q) + 1) = s;
- } else {
- for (j = 0; j < t; j++) fgetc (pipe);
- }
- }
- return root;
-}
-
-/*
- * Write list to a pipe. The elements MUST contain the next field as
- * first entry, and a string as second entry.
- */
-
-void pipeWriteList (FILE *pipe, int size, void *list)
-{
- void *l;
- char *s;
- int n, k;
-
- DPRINTF ("pipe write list\n");
- n = 0;
- for (l = list; l; l = * (void **) l) n++;
- n *= 2;
- fwrite (&n, sizeof(n), 1, pipe);
- for (l = list; l; l = * (void **) l) {
- fwrite (&size, sizeof(size), 1, pipe);
- fwrite (l, size, 1, pipe);
- s = * (((char **) l) + 1);
- if (s) {
- k = strlen(s) + 1;
- fwrite (&k, sizeof(k), 1, pipe);
- fwrite (s, sizeof(char), k, pipe);
- } else {
- k = 0;
- fwrite (&k, sizeof(k), 1, pipe);
- }
- }
- fflush (pipe);
-}
-
-/*
- * Read an array with 'nelem' elements. The elements themselves are
- * written by their own pipeWrite commands to allow the transfer of
- * embedded strings.
- */
-
-void pipeReadArray (FILE *pipe, int *nelem)
-{
- int n;
-
- DPRINTF ("pipe read array ");
- fread (&n, sizeof(n), 1, pipe);
- fread (nelem, sizeof(int), 1, pipe);
- DPRINTF ("%i (%i)\n", *nelem, n);
-}
-
-/*
- * Write an array with 'nelem' elements, each of which has 'nsub' elements
- * of size 'size' to the pipe. The elements themselves are written
- * by their own pipeWrite commands to allow the transfer of embedded
- * strings.
- */
-
-void pipeWriteArray (FILE *pipe, int nelem, int nsub)
-{
- int n;
-
- DPRINTF ("pipe write array %i * %i\n", nelem, nsub);
- n = nelem * nsub + 1;
- fwrite (&n, sizeof(n), 1, pipe);
- fwrite (&nelem, sizeof(nelem), 1, pipe);
- fflush (pipe);
-}