Структура AVQSVContext

#include <qsv.h>

Граф связей класса AVQSVContext:

Открытые атрибуты
mfxSession	session
int	iopattern
mfxExtBuffer **	ext_buffers
int	nb_ext_buffers
int	opaque_alloc
int	nb_opaque_surfaces
AVBufferRef *	opaque_surfaces
int	opaque_alloc_type

Подробное описание

This struct is used for communicating QSV parameters between libavcodec and the caller. It is managed by the caller and must be assigned to AVCodecContext.hwaccel_context.

• decoding: hwaccel_context must be set on return from the get_format() callback
• encoding: hwaccel_context must be set before avcodec_open2()

См. определение в файле qsv.h строка 36

Данные класса

session

mfxSession AVQSVContext::session

If non-NULL, the session to use for encoding or decoding. Otherwise, libavcodec will try to create an internal session.

См. определение в файле qsv.h строка 41

iopattern

int AVQSVContext::iopattern

The IO pattern to use.

См. определение в файле qsv.h строка 46

ext_buffers

mfxExtBuffer** AVQSVContext::ext_buffers

Extra buffers to pass to encoder or decoder initialization.

См. определение в файле qsv.h строка 51

nb_ext_buffers

int AVQSVContext::nb_ext_buffers

См. определение в файле qsv.h строка 52

opaque_alloc

int AVQSVContext::opaque_alloc

Encoding only. If this field is set to non-zero by the caller, libavcodec will create an mfxExtOpaqueSurfaceAlloc extended buffer and pass it to the encoder initialization. This only makes sense if iopattern is also set to MFX_IOPATTERN_IN_OPAQUE_MEMORY.

The number of allocated opaque surfaces will be the sum of the number required by the encoder and the user-provided value nb_opaque_surfaces. The array of the opaque surfaces will be exported to the caller through the opaque_surfaces field.

См. определение в файле qsv.h строка 65

nb_opaque_surfaces

int AVQSVContext::nb_opaque_surfaces

Encoding only, and only if opaque_alloc is set to non-zero. Before calling avcodec_open2(), the caller should set this field to the number of extra opaque surfaces to allocate beyond what is required by the encoder.

On return from avcodec_open2(), this field will be set by libavcodec to the total number of allocated opaque surfaces.

См. определение в файле qsv.h строка 76

opaque_surfaces

AVBufferRef* AVQSVContext::opaque_surfaces

Encoding only, and only if opaque_alloc is set to non-zero. On return from avcodec_open2(), this field will be used by libavcodec to export the array of the allocated opaque surfaces to the caller, so they can be passed to other parts of the pipeline.

The buffer reference exported here is owned and managed by libavcodec, the callers should make their own reference with av_buffer_ref() and free it with av_buffer_unref() when it is no longer needed.

The buffer data is an nb_opaque_surfaces-sized array of mfxFrameSurface1.

См. определение в файле qsv.h строка 90

opaque_alloc_type

int AVQSVContext::opaque_alloc_type

Encoding only, and only if opaque_alloc is set to non-zero. On return from avcodec_open2(), this field will be set to the surface type used in the opaque allocation request.

См. определение в файле qsv.h строка 97

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Объявления и описания членов структуры находятся в файле:

• C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavcodec/qsv.h