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.
CVPixelBufferRef	cv_buffer
	The Core Video pixel buffer that contains the current image data.
int	use_sync_decoding
	Use the hardware decoder in synchronous mode.
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 *	priv_bitstream
	The current bitstream buffer.
int	priv_bitstream_size
	The current size of the bitstream.
int	priv_allocated_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 94 of file vda.h.

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Field Documentation

CVPixelBufferRef vda_context::cv_buffer

The Core Video pixel buffer that contains the current image data.

encoding: unused decoding: Set by libavcodec. Unset by user.

Definition at line 109 of file vda.h.

Referenced by end_frame(), release_buffer(), vda_decoder_callback(), and vdadec_decode().

OSType vda_context::cv_pix_fmt_type

The pixel format for output image buffers.

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

Definition at line 171 of file vda.h.

Referenced by ff_vda_create_decoder(), vda_decoder_callback(), and vdadec_init().

VDADecoder vda_context::decoder

VDA decoder object.

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

Definition at line 101 of file vda.h.

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

int vda_context::format

The frame format.

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

Definition at line 163 of file vda.h.

Referenced by ff_vda_create_decoder(), and vdadec_init().

int vda_context::height

The frame height.

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

Definition at line 155 of file vda.h.

Referenced by ff_vda_create_decoder(), and vdadec_init().

int vda_context::priv_allocated_size

The reference size used for fast reallocation.

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

Definition at line 195 of file vda.h.

Referenced by decode_slice(), and ff_vda_create_decoder().

uint8_t* vda_context::priv_bitstream

The current bitstream buffer.

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

Definition at line 179 of file vda.h.

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

int vda_context::priv_bitstream_size

The current size of the bitstream.

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

Definition at line 187 of file vda.h.

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

vda_frame* vda_context::queue

VDA frames queue ordered by presentation timestamp.

Deprecated:

Use synchronous decoding mode.

- encoding: unused

• decoding: Set/Unset by libavcodec.

Definition at line 128 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.

Deprecated:

Use synchronous decoding mode.

- encoding: unused

• decoding: Set/Unset by libavcodec.

Definition at line 138 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::use_sync_decoding

Use the hardware decoder in synchronous mode.

encoding: unused decoding: Set by user.

Definition at line 117 of file vda.h.

Referenced by end_frame(), vda_decoder_callback(), and vdadec_init().

int vda_context::width

The frame width.

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

Definition at line 147 of file vda.h.

Referenced by ff_vda_create_decoder(), and vdadec_init().

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

• libavcodec/vda.h