FFmpeg
Data Fields
xvmc_pix_fmt Struct Reference

#include <xvmc.h>

Data Fields

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

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().

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().

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().

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().

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().

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().

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().

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().

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().

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().

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().

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().

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.

Definition at line 142 of file xvmc.h.

Referenced by ff_xvmc_decode_mb(), and ff_xvmc_field_start().

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.

Definition at line 151 of file xvmc.h.

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

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: