/* * Intel MediaSDK QSV public API * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_QSV_H #define AVCODEC_QSV_H #include <mfxvideo.h> #include "libavutil/buffer.h" /** * 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() */ typedef struct AVQSVContext { /** * If non-NULL, the session to use for encoding or decoding. * Otherwise, libavcodec will try to create an internal session. */ mfxSession session; /** * The IO pattern to use. */ int iopattern; /** * Extra buffers to pass to encoder or decoder initialization. */ mfxExtBuffer **ext_buffers; int nb_ext_buffers; /** * 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. * * The caller must set this field to zero for oneVPL (MFX_VERSION >= 2.0) */ int opaque_alloc; /** * 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. */ int nb_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. */ AVBufferRef *opaque_surfaces; /** * 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. */ int opaque_alloc_type; } AVQSVContext; /** * Allocate a new context. * * It must be freed by the caller with av_free(). */ AVQSVContext *av_qsv_alloc_context(void); #endif /* AVCODEC_QSV_H */