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Files | Data Structures | Functions
VDA
Hardware Accelerators bridge

Files

file  vda.h
 Public libavcodec VDA header.
 

Data Structures

struct  vda_context
 This structure is used to provide the necessary configurations and data to the VDA FFmpeg HWAccel implementation. More...
 
struct  AVVDAContext
 This struct holds all the information that needs to be passed between the caller and libavcodec for initializing VDA decoding. More...
 

Functions

int ff_vda_create_decoder (struct vda_context *vda_ctx, uint8_t *extradata, int extradata_size)
 Create the video decoder.
 
int ff_vda_destroy_decoder (struct vda_context *vda_ctx)
 Destroy the video decoder.
 
AVVDAContextav_vda_alloc_context (void)
 Allocate and initialize a VDA context.
 
int av_vda_default_init (AVCodecContext *avctx)
 This is a convenience function that creates and sets up the VDA context using an internal implementation.
 
void av_vda_default_free (AVCodecContext *avctx)
 This function must be called to free the VDA context initialized with av_vda_default_init().
 

Detailed Description

Function Documentation

int ff_vda_create_decoder ( struct vda_context vda_ctx,
uint8_t extradata,
int  extradata_size 
)

Create the video decoder.

Definition at line 177 of file vda_h264.c.

Referenced by vdadec_init().

int ff_vda_destroy_decoder ( struct vda_context vda_ctx)

Destroy the video decoder.

Definition at line 264 of file vda_h264.c.

Referenced by vdadec_close().

AVVDAContext* av_vda_alloc_context ( void  )

Allocate and initialize a VDA context.

This function should be called from the get_format() callback when the caller selects the AV_PIX_FMT_VDA format. The caller must then create the decoder object (using the output callback provided by libavcodec) that will be used for VDA-accelerated decoding.

When decoding with VDA is finished, the caller must destroy the decoder object and free the VDA context using av_free().

Returns
the newly allocated context or NULL on failure

Definition at line 59 of file vda.c.

int av_vda_default_init ( AVCodecContext avctx)

This is a convenience function that creates and sets up the VDA context using an internal implementation.

Parameters
avctxthe corresponding codec context
Returns
>= 0 on success, a negative AVERROR code on failure

Definition at line 64 of file vda.c.

Referenced by vda_init().

void av_vda_default_free ( AVCodecContext avctx)

This function must be called to free the VDA context initialized with av_vda_default_init().

Parameters
avctxthe corresponding codec context

Definition at line 69 of file vda.c.

Referenced by vda_uninit().