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- /*===========================================================================*
- * frame.h *
- * *
- * basic frames procedures *
- * *
- *===========================================================================*/
-
- /*
- * Copyright (c) 1993 The Regents of the University of California.
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose, without fee, and without written agreement is
- * hereby granted, provided that the above copyright notice and the following
- * two paragraphs appear in all copies of this software.
- *
- * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
- * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
- * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
- * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
- * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- */
-
-
- #ifndef FRAME_INCLUDED
- #define FRAME_INCLUDED
-
- /*==============*
- * HEADER FILES *
- *==============*/
-
- #include <pbmplus.h>
- #include <pnm.h>
- #include "general.h"
- #include "ansi.h"
- #include "mtypes.h"
-
-
- /*===========*
- * CONSTANTS *
- *===========*/
- #define TYPE_IFRAME 2
- #define TYPE_PFRAME 3
- #define TYPE_BFRAME 4
-
-
- /*=======================*
- * STRUCTURE DEFINITIONS *
- *=======================*/
-
- typedef struct mpegFrame {
- int type;
- char inputFileName[256];
- int id; /* the frame number -- starts at 0 */
- boolean inUse; /* TRUE iff this frame is currently being used */
- /* FALSE means any data here can be thrashed */
-
- uint8 **ppm_data;
- xel **rgb_data; /* pnm format -- see pbmplus docs */
- xelval rgb_maxval; /* largest value of any pixel index */
- int rgb_format; /* more info from pnm */
-
- /*
- * now, the YCrCb data. All pixel information is stored in unsigned
- * 8-bit pieces. We separate y, cr, and cb because cr and cb are
- * subsampled by a factor of 2.
- */
- uint8 **orig_y, **orig_cr, **orig_cb;
-
- /* now, the decoded data -- relevant only if
- * referenceFrame == DECODED_FRAME
- *
- */
- uint8 **decoded_y, **decoded_cr, **decoded_cb;
-
- /* reference data */
- uint8 **ref_y, **ref_cr, **ref_cb;
-
- /*
- * these are the Blocks which will ultimately compose MacroBlocks.
- * A Block is in a format that mp_fwddct() can crunch.
- */
- Block **y_blocks, **cr_blocks, **cb_blocks;
-
- /*
- * this is the half-pixel luminance data (for reference frames)
- */
- uint8 **halfX, **halfY, **halfBoth;
-
- boolean halfComputed; /* TRUE iff half-pixels already computed */
- } MpegFrame;
-
-
- extern MpegFrame *Frame_New _ANSI_ARGS_((int id, int type));
- extern void Frame_Init _ANSI_ARGS_((void));
- extern void Frame_Free _ANSI_ARGS_((MpegFrame *frame));
- extern void Frame_Exit _ANSI_ARGS_((void));
- extern void Frame_AllocPPM _ANSI_ARGS_((MpegFrame * frame));
- extern void Frame_AllocYCC _ANSI_ARGS_((MpegFrame * mf));
- extern void Frame_AllocDecoded _ANSI_ARGS_((MpegFrame *frame,
- boolean makeReference));
- extern void Frame_AllocHalf _ANSI_ARGS_((MpegFrame *frame));
- extern void Frame_AllocBlocks _ANSI_ARGS_((MpegFrame *mf));
-
- #endif /* FRAME_INCLUDED */
-