mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-18 07:15:04 +02:00
173 lines
6.6 KiB
C
173 lines
6.6 KiB
C
/*
|
|
* 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 {
|
|
/** 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().
|
|
The array has to be freed by XvMCDestroyBlocks().
|
|
Each group of 64 values represents one data block of differential
|
|
pixel information (in MoCo mode) or coefficients for IDCT.
|
|
- application - set the pointer during initialization
|
|
- libavcodec - fills coefficients/pixel data into the array
|
|
*/
|
|
short* data_blocks;
|
|
|
|
/** Pointer to the macroblock description array allocated by
|
|
XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
|
|
- application - set the pointer during initialization
|
|
- libavcodec - fills description data into the array
|
|
*/
|
|
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;
|
|
|
|
/** Indicate 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 has to be freed by XvMCDestroySurface() on application exit.
|
|
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;
|
|
//}@
|
|
|
|
/** Number of macroblock descriptions in the mv_blocks array
|
|
that 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 new macroblock descriptions in the mv_blocks array (after
|
|
start_mv_blocks_num) 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;
|
|
|
|
/** Number of the the next free data block; one data block consists of
|
|
64 short values in the data_blocks array.
|
|
All blocks before this one have already been claimed by placing their
|
|
position into the corresponding block description structure field,
|
|
that are part of the mv_blocks array.
|
|
- application - zeroes it on get_buffer().
|
|
A successful ff_draw_horiz_band() may zero it together
|
|
with start_mb_blocks_num.
|
|
- libavcodec - each decoded macroblock increases it by the number
|
|
of coded blocks it contains.
|
|
*/
|
|
int next_free_data_block_num;
|
|
|
|
/** extensions may be placed here */
|
|
#if LIBAVCODEC_VERSION_MAJOR < 53
|
|
//@{
|
|
/** State flags 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 */
|