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| | |
| | | /* |
| | | * 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 <mfx/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. |
| | | */ |
| | | 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 */ |