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  1. /*
  2.  * Intel MediaSDK QSV utility functions
  3.  *
  4.  * copyright (c) 2013 Luca Barbato
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #ifndef AVCODEC_QSVDEC_H
  24. #define AVCODEC_QSVDEC_H
  25.  
  26. #include <stdint.h>
  27. #include <sys/types.h>
  28.  
  29. #include <mfx/mfxvideo.h>
  30.  
  31. #include "libavutil/fifo.h"
  32. #include "libavutil/frame.h"
  33. #include "libavutil/pixfmt.h"
  34.  
  35. #include "avcodec.h"
  36. #include "qsv_internal.h"
  37.  
  38. typedef struct QSVContext {
  39.     // the session used for decoding
  40.     mfxSession session;
  41.  
  42.     // the session we allocated internally, in case the caller did not provide
  43.     // one
  44.     QSVSession internal_qs;
  45.  
  46.     /**
  47.      * a linked list of frames currently being used by QSV
  48.      */
  49.     QSVFrame *work_frames;
  50.  
  51.     AVFifoBuffer *async_fifo;
  52.     AVFifoBuffer *input_fifo;
  53.  
  54.     // this flag indicates that header parsed,
  55.     // decoder instance created and ready to general decoding
  56.     int engine_ready;
  57.  
  58.     // options set by the caller
  59.     int async_depth;
  60.     int iopattern;
  61.  
  62.     char *load_plugins;
  63.  
  64.     mfxExtBuffer **ext_buffers;
  65.     int         nb_ext_buffers;
  66. } QSVContext;
  67.  
  68. int ff_qsv_map_pixfmt(enum AVPixelFormat format);
  69.  
  70. int ff_qsv_decode_init(AVCodecContext *s, QSVContext *q, AVPacket *avpkt);
  71.  
  72. int ff_qsv_decode(AVCodecContext *s, QSVContext *q,
  73.                   AVFrame *frame, int *got_frame,
  74.                   AVPacket *avpkt);
  75.  
  76. int ff_qsv_decode_close(QSVContext *q);
  77.  
  78. #endif /* AVCODEC_QSVDEC_H */
  79.