vda_context Struct Reference
[VDA]

This structure is used to provide the necessary configurations and data to the VDA FFmpeg HWAccel implementation. More...

#include <vda.h>

Data Fields
VDADecoder	decoder
	VDA decoder object.
vda_frame *	queue
	VDA frames queue ordered by presentation timestamp.
pthread_mutex_t	queue_mutex
	Mutex for locking queue operations.
int	width
	The frame width.
int	height
	The frame height.
int	format
	The frame format.
OSType	cv_pix_fmt_type
	The pixel format for output image buffers.
uint8_t *	bitstream
	The current bitstream buffer.
int	bitstream_size
	The current size of the bitstream.
int	ref_size
	The reference size used for fast reallocation.

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Detailed Description

This structure is used to provide the necessary configurations and data to the VDA FFmpeg HWAccel implementation.

The application must make it available as AVCodecContext.hwaccel_context.

Definition at line 85 of file vda.h.

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Field Documentation

uint8_t* vda_context::bitstream

The current bitstream buffer.

• encoding: unused
• decoding: Set/Unset by libavcodec.

Definition at line 148 of file vda.h.

Referenced by decode_slice(), end_frame(), ff_vda_create_decoder(), and ff_vda_destroy_decoder().

int vda_context::bitstream_size

The current size of the bitstream.

• encoding: unused
• decoding: Set/Unset by libavcodec.

Definition at line 156 of file vda.h.

Referenced by decode_slice(), end_frame(), and start_frame().

OSType vda_context::cv_pix_fmt_type

The pixel format for output image buffers.

• encoding: unused
• decoding: Set/Unset by user.

Definition at line 140 of file vda.h.

Referenced by ff_vda_create_decoder(), and vda_decoder_callback().

VDADecoder vda_context::decoder

VDA decoder object.

• encoding: unused
• decoding: Set/Unset by libavcodec.

Definition at line 92 of file vda.h.

Referenced by decode_slice(), end_frame(), ff_vda_create_decoder(), ff_vda_decoder_decode(), ff_vda_destroy_decoder(), and start_frame().

int vda_context::format

The frame format.

• encoding: unused
• decoding: Set/Unset by user.

Definition at line 132 of file vda.h.

Referenced by ff_vda_create_decoder().

int vda_context::height

The frame height.

• encoding: unused
• decoding: Set/Unset by user.

Definition at line 124 of file vda.h.

Referenced by ff_vda_create_decoder().

vda_frame* vda_context::queue

VDA frames queue ordered by presentation timestamp.

• encoding: unused
• decoding: Set/Unset by libavcodec.

Definition at line 100 of file vda.h.

Referenced by ff_vda_queue_pop(), vda_clear_queue(), and vda_decoder_callback().

pthread_mutex_t vda_context::queue_mutex

Mutex for locking queue operations.

• encoding: unused
• decoding: Set/Unset by libavcodec.

Definition at line 108 of file vda.h.

Referenced by ff_vda_create_decoder(), ff_vda_destroy_decoder(), ff_vda_queue_pop(), vda_clear_queue(), and vda_decoder_callback().

int vda_context::ref_size

The reference size used for fast reallocation.

• encoding: unused
• decoding: Set/Unset by libavcodec.

Definition at line 164 of file vda.h.

Referenced by decode_slice(), and ff_vda_create_decoder().

int vda_context::width

The frame width.

• encoding: unused
• decoding: Set/Unset by user.

Definition at line 116 of file vda.h.

Referenced by ff_vda_create_decoder().

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

• libavcodec/vda.h