WebSVN – Kolibri OS – Blame – /contrib/sdk/sources/ffmpeg/libavcodec/xvmc.h

Rev	Author	Line No.	Line
4349	Serge	1	/*
		2	* Copyright (C) 2003 Ivan Kalvachev
		3	*
		4	* This file is part of FFmpeg.
		5	*
		6	* FFmpeg is free software; you can redistribute it and/or
		7	* modify it under the terms of the GNU Lesser General Public
		8	* License as published by the Free Software Foundation; either
		9	* version 2.1 of the License, or (at your option) any later version.
		10	*
		11	* FFmpeg is distributed in the hope that it will be useful,
		12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		14	* Lesser General Public License for more details.
		15	*
		16	* You should have received a copy of the GNU Lesser General Public
		17	* License along with FFmpeg; if not, write to the Free Software
		18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
		19	*/
		20
		21	#ifndef AVCODEC_XVMC_H
		22	#define AVCODEC_XVMC_H
		23
		24	/**
		25	* @file
		26	* @ingroup lavc_codec_hwaccel_xvmc
		27	* Public libavcodec XvMC header.
		28	*/
		29
		30	#include
		31
		32	#include "avcodec.h"
		33
		34	/**
		35	* @defgroup lavc_codec_hwaccel_xvmc XvMC
		36	* @ingroup lavc_codec_hwaccel
		37	*
		38	* @{
		39	*/
		40
		41	#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct
		42	the number is 1337 speak for the letters IDCT MCo (motion compensation) */
		43
		44	struct xvmc_pix_fmt {
		45	/** The field contains the special constant value AV_XVMC_ID.
		46	It is used as a test that the application correctly uses the API,
		47	and that there is no corruption caused by pixel routines.
		48	- application - set during initialization
		49	- libavcodec - unchanged
		50	*/
		51	int xvmc_id;
		52
		53	/** Pointer to the block array allocated by XvMCCreateBlocks().
		54	The array has to be freed by XvMCDestroyBlocks().
		55	Each group of 64 values represents one data block of differential
		56	pixel information (in MoCo mode) or coefficients for IDCT.
		57	- application - set the pointer during initialization
		58	- libavcodec - fills coefficients/pixel data into the array
		59	*/
		60	short* data_blocks;
		61
		62	/** Pointer to the macroblock description array allocated by
		63	XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
		64	- application - set the pointer during initialization
		65	- libavcodec - fills description data into the array
		66	*/
		67	XvMCMacroBlock* mv_blocks;
		68
		69	/** Number of macroblock descriptions that can be stored in the mv_blocks
		70	array.
		71	- application - set during initialization
		72	- libavcodec - unchanged
		73	*/
		74	int allocated_mv_blocks;
		75
		76	/** Number of blocks that can be stored at once in the data_blocks array.
		77	- application - set during initialization
		78	- libavcodec - unchanged
		79	*/
		80	int allocated_data_blocks;
		81
		82	/** Indicate that the hardware would interpret data_blocks as IDCT
		83	coefficients and perform IDCT on them.
		84	- application - set during initialization
		85	- libavcodec - unchanged
		86	*/
		87	int idct;
		88
		89	/** In MoCo mode it indicates that intra macroblocks are assumed to be in
		90	unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
		91	- application - set during initialization
		92	- libavcodec - unchanged
		93	*/
		94	int unsigned_intra;
		95
		96	/** Pointer to the surface allocated by XvMCCreateSurface().
		97	It has to be freed by XvMCDestroySurface() on application exit.
		98	It identifies the frame and its state on the video hardware.
		99	- application - set during initialization
		100	- libavcodec - unchanged
		101	*/
		102	XvMCSurface* p_surface;
		103
		104	/** Set by the decoder before calling ff_draw_horiz_band(),
		105	needed by the XvMCRenderSurface function. */
		106	//@{
		107	/** Pointer to the surface used as past reference
		108	- application - unchanged
		109	- libavcodec - set
		110	*/
		111	XvMCSurface* p_past_surface;
		112
		113	/** Pointer to the surface used as future reference
		114	- application - unchanged
		115	- libavcodec - set
		116	*/
		117	XvMCSurface* p_future_surface;
		118
		119	/** top/bottom field or frame
		120	- application - unchanged
		121	- libavcodec - set
		122	*/
		123	unsigned int picture_structure;
		124
		125	/** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
		126	- application - unchanged
		127	- libavcodec - set
		128	*/
		129	unsigned int flags;
		130	//}@
		131
		132	/** Number of macroblock descriptions in the mv_blocks array
		133	that have already been passed to the hardware.
		134	- application - zeroes it on get_buffer().
		135	A successful ff_draw_horiz_band() may increment it
		136	with filled_mb_block_num or zero both.
		137	- libavcodec - unchanged
		138	*/
		139	int start_mv_blocks_num;
		140
		141	/** Number of new macroblock descriptions in the mv_blocks array (after
		142	start_mv_blocks_num) that are filled by libavcodec and have to be
		143	passed to the hardware.
		144	- application - zeroes it on get_buffer() or after successful
		145	ff_draw_horiz_band().
		146	- libavcodec - increment with one of each stored MB
		147	*/
		148	int filled_mv_blocks_num;
		149
		150	/** Number of the next free data block; one data block consists of
		151	64 short values in the data_blocks array.
		152	All blocks before this one have already been claimed by placing their
		153	position into the corresponding block description structure field,
		154	that are part of the mv_blocks array.
		155	- application - zeroes it on get_buffer().
		156	A successful ff_draw_horiz_band() may zero it together
		157	with start_mb_blocks_num.
		158	- libavcodec - each decoded macroblock increases it by the number
		159	of coded blocks it contains.
		160	*/
		161	int next_free_data_block_num;
		162	};
		163
		164	/**
		165	* @}
		166	*/
		167
		168	#endif /* AVCODEC_XVMC_H */

Subversion Repositories Kolibri OS

(root)/contrib/sdk/sources/ffmpeg/libavcodec/xvmc.h – Rev 4349