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/*
* Copyright (C) 2003 Ivan Kalvachev
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_XVMC_H
#define AVCODEC_XVMC_H
#include <X11/extensions/XvMC.h>
#include "avcodec.h"
#if LIBAVCODEC_VERSION_MAJOR < 53
#define AV_XVMC_STATE_DISPLAY_PENDING 1 /** the surface should be shown, the video driver manipulates this */
#define AV_XVMC_STATE_PREDICTION 2 /** the surface is needed for prediction, the codec manipulates this */
#define AV_XVMC_STATE_OSD_SOURCE 4 /** the surface is needed for subpicture rendering */
#endif
#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct
the number is 1337 speak for the letters IDCT MCo (motion compensation) */
struct xvmc_pix_fmt {
/** Set by the calling application.
Once set these values are not supposed to be modified.
*/
//@{
/** The field contains the special constant value AV_XVMC_ID.
It is used as a test that the application correctly uses the API,
and that there is no corruption caused by pixel routines.
- application - set during initialization
- libavcodec - unchanged
*/
int xvmc_id;
/** Pointer to the block array allocated by XvMCCreateBlocks()
it contains differential pixel data (in MoCo mode)
or coefficients for IDCT.
- application - set during initialization
- libavcodec - unchanged
*/
short* data_blocks;
/** Pointer to the macroblock description array allocated by
XvMCCreateMacroBlocks().
- application - set during initialization
- libavcodec - unchanged
*/
XvMCMacroBlock* mv_blocks;
/** Number of macroblock descriptions that can be stored in the mv_blocks
array.
- application - set during initialization
- libavcodec - unchanged
*/
int allocated_mv_blocks;
/** Number of blocks that can be stored at once in the data_blocks array.
- application - set during initialization
- libavcodec - unchanged
*/
int allocated_data_blocks;
/** Indicates that the hardware would interpret data_blocks as IDCT
coefficients and perform IDCT on them.
- application - set during initialization
- libavcodec - unchanged
*/
int idct;
/** In MoCo mode it indicates that intra macroblocks are assumed to be in
unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
- application - set during initialization
- libavcodec - unchanged
*/
int unsigned_intra;
/** Pointer to the surface allocated by XvMCCreateSurface().
It identifies the frame and its state on the video hardware.
- application - set during initialization
- libavcodec - unchanged
*/
XvMCSurface* p_surface;
//}@
/** Set by the decoder before calling ff_draw_horiz_band(),
needed by the XvMCRenderSurface function. */
//@{
/** Pointer to the surface used as past reference
- application - unchanged
- libavcodec - set
*/
XvMCSurface* p_past_surface;
/** Pointer to the surface used as future reference
- application - unchanged
- libavcodec - set
*/
XvMCSurface* p_future_surface;
/** top/bottom field or frame
- application - unchanged
- libavcodec - set
*/
unsigned int picture_structure;
/** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
- application - unchanged
- libavcodec - set
*/
unsigned int flags;
//}@
/** Offset in the mv array for the current slice.
Macroblocks described before that offset are assumed to have already
been passed to the hardware.
- application - zeroes it on get_buffer().
A successful ff_draw_horiz_band() may increment it
with filled_mb_block_num or zero both.
- libavcodec - unchanged
*/
int start_mv_blocks_num;
/** Number of mv blocks that are filled by libavcodec and have to be
passed to the hardware.
- application - zeroes it on get_buffer() or after successful
ff_draw_horiz_band().
- libavcodec - increment with one of each stored MB
*/
int filled_mv_blocks_num;
/** Offset to the next free data block. The mv_blocks field holds a number
pointing to the data blocks.
- application - zeroes it on get_buffer() and after successful
ff_draw_horiz_band().
- libavcodec - each macroblock increases it with the number
of coded blocks it contains.
*/
int next_free_data_block_num;
/** extensions may be placed here */
#if LIBAVCODEC_VERSION_MAJOR < 53
//@{
/** State - used to work around limitations in the MPlayer video system.
0 - Surface is not used.
1 - Surface is still held in application to be displayed or is
still visible.
2 - Surface is still held in libavcodec buffer for prediction.
*/
int state;
/** pointer to the surface where the subpicture is rendered */
void* p_osd_target_surface_render;
//}@
#endif
};
#endif /* AVCODEC_XVMC_H */
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