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108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
/*
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* Intel MediaSDK QSV public API
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_QSV_H
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#define AVCODEC_QSV_H
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#include <mfx/mfxvideo.h>
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#include "libavutil/buffer.h"
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/**
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* This struct is used for communicating QSV parameters between libavcodec and
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* the caller. It is managed by the caller and must be assigned to
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* AVCodecContext.hwaccel_context.
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* - decoding: hwaccel_context must be set on return from the get_format()
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* callback
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* - encoding: hwaccel_context must be set before avcodec_open2()
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*/
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typedef struct AVQSVContext {
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/**
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* If non-NULL, the session to use for encoding or decoding.
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* Otherwise, libavcodec will try to create an internal session.
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*/
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mfxSession session;
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/**
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* The IO pattern to use.
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*/
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int iopattern;
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/**
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* Extra buffers to pass to encoder or decoder initialization.
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*/
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mfxExtBuffer **ext_buffers;
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int nb_ext_buffers;
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/**
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* Encoding only. If this field is set to non-zero by the caller, libavcodec
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* will create an mfxExtOpaqueSurfaceAlloc extended buffer and pass it to
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* the encoder initialization. This only makes sense if iopattern is also
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* set to MFX_IOPATTERN_IN_OPAQUE_MEMORY.
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*
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* The number of allocated opaque surfaces will be the sum of the number
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* required by the encoder and the user-provided value nb_opaque_surfaces.
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* The array of the opaque surfaces will be exported to the caller through
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* the opaque_surfaces field.
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*/
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int opaque_alloc;
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/**
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* Encoding only, and only if opaque_alloc is set to non-zero. Before
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* calling avcodec_open2(), the caller should set this field to the number
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* of extra opaque surfaces to allocate beyond what is required by the
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* encoder.
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*
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* On return from avcodec_open2(), this field will be set by libavcodec to
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* the total number of allocated opaque surfaces.
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*/
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int nb_opaque_surfaces;
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/**
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* Encoding only, and only if opaque_alloc is set to non-zero. On return
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* from avcodec_open2(), this field will be used by libavcodec to export the
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* array of the allocated opaque surfaces to the caller, so they can be
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* passed to other parts of the pipeline.
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*
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* The buffer reference exported here is owned and managed by libavcodec,
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* the callers should make their own reference with av_buffer_ref() and free
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* it with av_buffer_unref() when it is no longer needed.
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*
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* The buffer data is an nb_opaque_surfaces-sized array of mfxFrameSurface1.
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*/
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AVBufferRef *opaque_surfaces;
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/**
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* Encoding only, and only if opaque_alloc is set to non-zero. On return
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* from avcodec_open2(), this field will be set to the surface type used in
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* the opaque allocation request.
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*/
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int opaque_alloc_type;
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} AVQSVContext;
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/**
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* Allocate a new context.
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*
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* It must be freed by the caller with av_free().
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*/
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AVQSVContext *av_qsv_alloc_context(void);
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#endif /* AVCODEC_QSV_H */
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