libavcodec/vaapi_decode.h

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * Libav is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #ifndef AVCODEC_VAAPI_DECODE_H
  20 #define AVCODEC_VAAPI_DECODE_H
  21
  22 #include <va/va.h>
  23
  24 #include "libavutil/frame.h"
  25 #include "libavutil/hwcontext.h"
  26 #include "libavutil/hwcontext_vaapi.h"
  27
  28 #include "avcodec.h"
  29
  30 #include "version.h"
  31 #if FF_API_VAAPI_CONTEXT
  32 #include "vaapi.h"
  33 #endif
  34
  35 static inline VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
  36 {
  37     return (uintptr_t)pic->data[3];
  38 }
  39
  40 enum {
  41     MAX_PARAM_BUFFERS = 16,
  42 };
  43
  44 typedef struct VAAPIDecodePicture {
  45     VASurfaceID           output_surface;
  46
  47     int                nb_param_buffers;
  48     VABufferID            param_buffers[MAX_PARAM_BUFFERS];
  49
  50     int                nb_slices;
  51     VABufferID           *slice_buffers;
  52     int                   slices_allocated;
  53 } VAAPIDecodePicture;
  54
  55 typedef struct VAAPIDecodeContext {
  56     VAProfile             va_profile;
  57     VAEntrypoint          va_entrypoint;
  58     VAConfigID            va_config;
  59     VAContextID           va_context;
  60
  61 #if FF_API_VAAPI_CONTEXT
  62     int                   have_old_context;
  63     struct vaapi_context *old_context;
  64     AVBufferRef          *device_ref;
  65 #endif
  66
  67     AVHWDeviceContext    *device;
  68     AVVAAPIDeviceContext *hwctx;
  69
  70     AVHWFramesContext    *frames;
  71     AVVAAPIFramesContext *hwfc;
  72
  73     enum AVPixelFormat    surface_format;
  74     int                   surface_count;
  75 } VAAPIDecodeContext;
  76
  77
  78 int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
  79                                       VAAPIDecodePicture *pic,
  80                                       int type,
  81                                       const void *data,
  82                                       size_t size);
  83
  84 int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
  85                                       VAAPIDecodePicture *pic,
  86                                       const void *params_data,
  87                                       size_t params_size,
  88                                       const void *slice_data,
  89                                       size_t slice_size);
  90
  91 int ff_vaapi_decode_issue(AVCodecContext *avctx,
  92                           VAAPIDecodePicture *pic);
  93 int ff_vaapi_decode_cancel(AVCodecContext *avctx,
  94                            VAAPIDecodePicture *pic);
  95
  96 int ff_vaapi_decode_init(AVCodecContext *avctx);
  97 int ff_vaapi_decode_uninit(AVCodecContext *avctx);
  98
  99 #endif /* AVCODEC_VAAPI_DECODE_H */