Initial commit of Command & Conquer Red Alert source code.

2025-12-16 07:31:39 -05:00 · 2025-02-27 16:15:05 +00:00
parent b685cea758
commit 5e733d5dcc
2082 changed files with 797727 additions and 0 deletions
--- a/VQ/VQA32/DSTREAM.CPP
+++ b/VQ/VQA32/DSTREAM.CPP
@@ -0,0 +1,188 @@
+/*
+**	Command & Conquer Red Alert(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program 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 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/****************************************************************************
+*
+*        C O N F I D E N T I A L -- W E S T W O O D  S T U D I O S
+*
+*----------------------------------------------------------------------------
+*
+* PROJECT
+*     VQAPlay32 library.
+*
+* FILE
+*     dstream.c
+*
+* DESCRIPTION
+*     DOS IO handler.
+*
+* PROGRAMMER
+*     Denzil E. Long, Jr.
+*
+* DATE
+*     April 10, 1995
+*
+*----------------------------------------------------------------------------
+*
+* PUBLIC
+*     VQA_InitAsDOS - Initialize IO with the standard DOS handler.
+*
+* PRIVATE
+*     VQADOSHandler - Standard DOS IO handler.
+*
+****************************************************************************/
+
+#include <fcntl.h>
+#include <io.h>
+#include "vqaplayp.h"
+
+/*---------------------------------------------------------------------------
+ * PRIVATE DECLARATIONS
+ *-------------------------------------------------------------------------*/
+
+static long VQADOSHandler(VQAHandle *vqa, long action, void *buffer,
+		long nbytes);
+
+
+/****************************************************************************
+*
+* NAME
+*     VQA_InitAsDOS - Initialize IO with the standard DOS handler.
+*
+* SYNOPSIS
+*     VQA_InitAsDOS(VQA)
+*
+*     VQA_InitAsDOS(VQAHandle *);
+*
+* FUNCTION
+*     Initialize the IO of the specified handle as a standard DOS access.
+*
+* INPUTS
+*     VQA - Pointer to VQAHandle to initialize as DOS.
+*
+* RESULT
+*     NONE
+*
+****************************************************************************/
+
+void VQA_InitAsDOS(VQAHandle *vqa)
+{
+	((VQAHandleP *)vqa)->IOHandler = VQADOSHandler;
+}
+
+
+/****************************************************************************
+*
+* NAME
+*     VQADOSHandler - Standard DOS IO handler.
+*
+* SYNOPSIS
+*     Error = VQADOSHandler(VQA, Action, Buffer, NBytes)
+*
+*     unsigned long VQADOSHandler(VQAHandle *, long, long, long);
+*
+* FUNCTION
+*      Perform the requested action on the standard DOS file system.
+*
+* INPUTS
+*      VQA    - VQAHandle to operate on.
+*      Action - Action to perform.
+*      Buffer - Buffer to Read/Write to/from.
+*      NBytes - Number of bytes to operate on.
+*
+* RESULT
+*      Error - 0 if successful, otherwise error.
+*
+****************************************************************************/
+
+static long VQADOSHandler(VQAHandle *vqa, long action, void *buffer,
+		long nbytes)
+{
+	long fh;
+	long error;
+
+	fh = vqa->VQAio;
+
+	/* Perform the action specified by the IO command */
+	switch (action) {
+
+		/* VQACMD_READ means read NBytes and place it in the memory
+		 * pointed to by Buffer.
+		 *
+		 * Any error code returned will be remapped by VQA library into
+		 * VQAERR_READ.
+		 */
+		case VQACMD_READ:
+			error = (read(fh, buffer, nbytes) != nbytes);
+			break;
+
+		/* VQACMD_WRITE is analogous to VQACMD_READ.
+		 *
+		 * Writing is not allowed to the VQA file, VQA library will remap the
+		 * error into VQAERR_WRITE.
+		 */
+		case VQACMD_WRITE:
+			error = 1;
+			break;
+
+		/* VQACMD_SEEK asks that you perform a seek relative to the current
+		 * position. NBytes is a signed number, indicating seek direction
+		 * (positive for forward, negative for backward). Buffer has no meaning
+		 * here.
+		 *
+		 * Any error code returned will be remapped by VQA library into
+		 * VQAERR_SEEK.
+		 */
+		case VQACMD_SEEK:
+			error = (lseek(fh, nbytes, (long)buffer) == -1);
+			break;
+
+		/* VQACMD_OPEN asks that you open the file for access. */
+		case VQACMD_OPEN:
+			error = open((char *)buffer, (O_RDONLY|O_BINARY));
+
+			if (error != -1) {
+				vqa->VQAio = error;
+				error = 0;
+			}
+			break;
+
+		case VQACMD_CLOSE:
+			close(fh);
+			error = 0;
+			break;
+
+		/* VQACMD_INIT means to prepare your IO for reading. This is used for
+		 * certain IOs that can't be read immediately upon opening, and need
+		 * further preparation. This operation is allowed to fail; the error code
+		 * will be returned directly to the client.
+		 */
+		case VQACMD_INIT:
+
+		/* IFFCMD_CLEANUP means to terminate the transaction with the associated
+		 * IO. This is used for IOs that can't simply be closed. This operation
+		 * is not allowed to fail; any error returned will be ignored.
+		 */
+		case VQACMD_CLEANUP:
+			error = 0;
+			break;
+	}
+
+	return (error);
+}
+