#include <libavcodec/xvmc.h>

Data Fields
int	xvmc_id
	The field contains the special constant value AV_XVMC_ID. More...

short *	data_blocks
	Pointer to the block array allocated by XvMCCreateBlocks(). More...

XvMCMacroBlock *	mv_blocks
	Pointer to the macroblock description array allocated by XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks(). More...

int	allocated_mv_blocks
	Number of macroblock descriptions that can be stored in the mv_blocks array. More...

int	allocated_data_blocks
	Number of blocks that can be stored at once in the data_blocks array. More...

int	idct
	Indicate that the hardware would interpret data_blocks as IDCT coefficients and perform IDCT on them. More...

int	unsigned_intra
	In MoCo mode it indicates that intra macroblocks are assumed to be in unsigned format; same as the XVMC_INTRA_UNSIGNED flag. More...

XvMCSurface *	p_surface
	Pointer to the surface allocated by XvMCCreateSurface(). More...


XvMCSurface *	p_past_surface
	Set by the decoder before calling ff_draw_horiz_band(), needed by the XvMCRenderSurface function. More...

XvMCSurface *	p_future_surface
	Pointer to the surface used as future reference. More...

unsigned int	picture_structure
	top/bottom field or frame More...

unsigned int	flags
	XVMC_SECOND_FIELD - 1st or 2nd field in the sequence. More...

int	start_mv_blocks_num
	Number of macroblock descriptions in the mv_blocks array that have already been passed to the hardware. More...

int	filled_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. More...

int	next_free_data_block_num
	Number of the next free data block; one data block consists of 64 short values in the data_blocks array. More...

Detailed Description

Definition at line 47 of file xvmc.h.

Field Documentation

◆ xvmc_id

int xvmc_pix_fmt::xvmc_id

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

Definition at line 54 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), ff_xvmc_field_start(), and ff_xvmc_init_block().

◆ data_blocks

short* xvmc_pix_fmt::data_blocks

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

Definition at line 63 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), ff_xvmc_field_start(), and ff_xvmc_init_block().

◆ mv_blocks

XvMCMacroBlock* xvmc_pix_fmt::mv_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

Definition at line 70 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), and ff_xvmc_field_start().

◆ allocated_mv_blocks

int xvmc_pix_fmt::allocated_mv_blocks

Number of macroblock descriptions that can be stored in the mv_blocks array.

application - set during initialization
libavcodec - unchanged

Definition at line 77 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), and ff_xvmc_field_start().

◆ allocated_data_blocks

int xvmc_pix_fmt::allocated_data_blocks

Number of blocks that can be stored at once in the data_blocks array.

application - set during initialization
libavcodec - unchanged

Definition at line 83 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), and ff_xvmc_field_start().

◆ idct

int xvmc_pix_fmt::idct

Indicate that the hardware would interpret data_blocks as IDCT coefficients and perform IDCT on them.

application - set during initialization
libavcodec - unchanged

Definition at line 90 of file xvmc.h.

Referenced by ff_xvmc_decode_mb().

◆ unsigned_intra

int xvmc_pix_fmt::unsigned_intra

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

Definition at line 97 of file xvmc.h.

Referenced by ff_xvmc_decode_mb().

◆ p_surface

XvMCSurface* xvmc_pix_fmt::p_surface

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

Definition at line 105 of file xvmc.h.

Referenced by ff_xvmc_field_start().

◆ p_past_surface

XvMCSurface* xvmc_pix_fmt::p_past_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

Definition at line 114 of file xvmc.h.

Referenced by ff_xvmc_field_start().

◆ p_future_surface

XvMCSurface* xvmc_pix_fmt::p_future_surface

Pointer to the surface used as future reference.

application - unchanged
libavcodec - set

Definition at line 120 of file xvmc.h.

Referenced by ff_xvmc_field_start().

◆ picture_structure

unsigned int xvmc_pix_fmt::picture_structure

top/bottom field or frame

application - unchanged
libavcodec - set

Definition at line 126 of file xvmc.h.

Referenced by ff_xvmc_field_start().

◆ flags

unsigned int xvmc_pix_fmt::flags

XVMC_SECOND_FIELD - 1st or 2nd field in the sequence.

application - unchanged
libavcodec - set

Definition at line 132 of file xvmc.h.

Referenced by ff_xvmc_field_start().

◆ start_mv_blocks_num

int xvmc_pix_fmt::start_mv_blocks_num

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

Definition at line 142 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), and ff_xvmc_field_start().

◆ filled_mv_blocks_num

int xvmc_pix_fmt::filled_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

Definition at line 151 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), ff_xvmc_field_end(), and ff_xvmc_field_start().

◆ next_free_data_block_num

int xvmc_pix_fmt::next_free_data_block_num

Number of 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.

Definition at line 164 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), ff_xvmc_field_start(), and ff_xvmc_init_block().

The documentation for this struct was generated from the following file:

libavcodec/xvmc.h

Data Fields

Detailed Description

Field Documentation

◆ xvmc_id

◆ data_blocks

◆ mv_blocks

◆ allocated_mv_blocks

◆ allocated_data_blocks

◆ idct

◆ unsigned_intra

◆ p_surface

◆ p_past_surface

◆ p_future_surface

◆ picture_structure

◆ flags

◆ start_mv_blocks_num

◆ filled_mv_blocks_num

◆ next_free_data_block_num