vaapi_context Struct Reference
[VA API Decoding]

This structure is used to share data between the FFmpeg library and the client video application. More...

#include <vaapi.h>


Data Fields

void * display
Window system dependent data.
uint32_t config_id
Configuration ID.
uint32_t context_id
Context ID (video decode pipeline).
uint32_t pic_param_buf_id
VAPictureParameterBuffer ID.
uint32_t iq_matrix_buf_id
VAIQMatrixBuffer ID.
uint32_t bitplane_buf_id
VABitPlaneBuffer ID (for VC-1 decoding).
uint32_t * slice_buf_ids
Slice parameter/data buffer IDs.
unsigned int n_slice_buf_ids
Number of effective slice buffer IDs to send to the HW.
unsigned int slice_buf_ids_alloc
Size of pre-allocated slice_buf_ids.
void * slice_params
Pointer to VASliceParameterBuffers.
unsigned int slice_param_size
Size of a VASliceParameterBuffer element.
unsigned int slice_params_alloc
Size of pre-allocated slice_params.
unsigned int slice_count
Number of slices currently filled in.
const uint8_t * slice_data
Pointer to slice data buffer base
  • encoding: unused
  • decoding: Set by libavcodec.

uint32_t slice_data_size
Current size of slice data.

Detailed Description

This structure is used to share data between the FFmpeg library and the client video application.

This shall be zero-allocated and available as AVCodecContext.hwaccel_context. All user members can be set once during initialization or through each AVCodecContext.get_buffer() function call. In any case, they must be valid prior to calling decoding functions.

Definition at line 50 of file vaapi.h.

Field Documentation

uint32_t vaapi_context::bitplane_buf_id

VABitPlaneBuffer ID (for VC-1 decoding).

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 97 of file vaapi.h.

Referenced by ff_vaapi_alloc_bitplane(), ff_vaapi_common_end_frame(), and render_picture().

uint32_t vaapi_context::config_id

Configuration ID.

  • encoding: unused
  • decoding: Set by user

Definition at line 65 of file vaapi.h.

uint32_t vaapi_context::context_id

Context ID (video decode pipeline).

  • encoding: unused
  • decoding: Set by user

Definition at line 73 of file vaapi.h.

Referenced by alloc_buffer(), commit_slices(), and render_picture().

void* vaapi_context::display

Window system dependent data.

  • encoding: unused
  • decoding: Set by user

Definition at line 57 of file vaapi.h.

Referenced by alloc_buffer(), commit_slices(), ff_vaapi_common_end_frame(), and render_picture().

uint32_t vaapi_context::iq_matrix_buf_id

VAIQMatrixBuffer ID.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 89 of file vaapi.h.

Referenced by ff_vaapi_alloc_iq_matrix(), ff_vaapi_common_end_frame(), and render_picture().

unsigned int vaapi_context::n_slice_buf_ids

Number of effective slice buffer IDs to send to the HW.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 113 of file vaapi.h.

Referenced by commit_slices(), ff_vaapi_common_end_frame(), and render_picture().

uint32_t vaapi_context::pic_param_buf_id

VAPictureParameterBuffer ID.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 81 of file vaapi.h.

Referenced by ff_vaapi_alloc_pic_param(), ff_vaapi_common_end_frame(), and render_picture().

uint32_t* vaapi_context::slice_buf_ids

Slice parameter/data buffer IDs.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 105 of file vaapi.h.

Referenced by commit_slices(), ff_vaapi_common_end_frame(), and render_picture().

unsigned int vaapi_context::slice_buf_ids_alloc

Size of pre-allocated slice_buf_ids.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 121 of file vaapi.h.

Referenced by commit_slices(), and ff_vaapi_common_end_frame().

unsigned int vaapi_context::slice_count

Number of slices currently filled in.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 153 of file vaapi.h.

Referenced by commit_slices(), ff_vaapi_alloc_slice(), and ff_vaapi_common_end_frame().

const uint8_t* vaapi_context::slice_data

Pointer to slice data buffer base

  • encoding: unused
  • decoding: Set by libavcodec.

Definition at line 160 of file vaapi.h.

Referenced by commit_slices(), and ff_vaapi_alloc_slice().

uint32_t vaapi_context::slice_data_size

Current size of slice data.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 168 of file vaapi.h.

Referenced by commit_slices(), and ff_vaapi_alloc_slice().

unsigned int vaapi_context::slice_param_size

Size of a VASliceParameterBuffer element.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 137 of file vaapi.h.

Referenced by commit_slices(), ff_vaapi_alloc_slice(), start_frame(), vaapi_mpeg2_start_frame(), vaapi_mpeg4_start_frame(), and vaapi_vc1_start_frame().

void* vaapi_context::slice_params

Pointer to VASliceParameterBuffers.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 129 of file vaapi.h.

Referenced by commit_slices(), ff_vaapi_alloc_slice(), and ff_vaapi_common_end_frame().

unsigned int vaapi_context::slice_params_alloc

Size of pre-allocated slice_params.

  • encoding: unused
  • decoding: Set by libavcodec

Definition at line 145 of file vaapi.h.

Referenced by ff_vaapi_alloc_slice(), and ff_vaapi_common_end_frame().

The documentation for this struct was generated from the following file:
Generated on Fri Oct 26 02:50:17 2012 for FFmpeg by doxygen 1.5.8

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