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/*===========================================================================*
* frame.h *
* *
* basic frames procedures *
* *
*===========================================================================*/
/*
* Copyright (c) 1995 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 "netpbm/pm_c_util.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 */
bool inUse;
/* this frame is currently being used (if not, any data here can be
thrashed)
*/
/*
* 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.
*
* if orig_y is NULL, then orig_cr, orig_cb are undefined
*/
uint8_t **orig_y, **orig_cr, **orig_cb;
/* now, the decoded data -- relevant only if
* referenceFrame == DECODED_FRAME
*
* if decoded_y is NULL, then decoded_cr, decoded_cb are undefined
*/
uint8_t **decoded_y, **decoded_cr, **decoded_cb;
/* reference data */
uint8_t **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.
* if y_blocks is NULL, then cr_blocks, cb_blocks are undefined
*/
Block **y_blocks, **cr_blocks, **cb_blocks;
/*
* this is the half-pixel luminance data (for reference frames)
*/
uint8_t **halfX, **halfY, **halfBoth;
bool halfComputed; /* TRUE iff half-pixels already computed */
struct mpegFrame *next; /* points to the next B-frame to be encoded, if
* stdin is used as the input.
*/
} MpegFrame;
void
Frame_Init(unsigned int const numOfFramesRequested);
void
Frame_Exit(void);
void
Frame_Free(MpegFrame * const frameP);
MpegFrame *
Frame_New(int const id,
int const type);
void
Frame_AllocBlocks(MpegFrame * const frameP);
void
Frame_AllocYCC(MpegFrame * const frameP);
void
Frame_AllocHalf(MpegFrame * const frameP);
void
Frame_AllocDecoded(MpegFrame * const frameP,
bool const makeReference);
void
Frame_Resize(MpegFrame * const omf,
MpegFrame * const mf,
int const insize_x,
int const insize_y,
int const outsize_x,
int const outsize_y);
#endif
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