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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 static inline VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
31 {
32     return (uintptr_t)pic->data[3];
33 }
34
35 enum {
36     MAX_PARAM_BUFFERS = 16,
37 };
38
39 typedef struct VAAPIDecodePicture {
40     VASurfaceID           output_surface;
41
42     int                nb_param_buffers;
43     VABufferID            param_buffers[MAX_PARAM_BUFFERS];
44
45     int                nb_slices;
46     VABufferID           *slice_buffers;
47     int                   slices_allocated;
48 } VAAPIDecodePicture;
49
50 typedef struct VAAPIDecodeContext {
51     VAConfigID            va_config;
52     VAContextID           va_context;
53
54     AVHWDeviceContext    *device;
55     AVVAAPIDeviceContext *hwctx;
56
57     AVHWFramesContext    *frames;
58     AVVAAPIFramesContext *hwfc;
59
60     enum AVPixelFormat    surface_format;
61     int                   surface_count;
62
63     VASurfaceAttrib       pixel_format_attribute;
64 } VAAPIDecodeContext;
65
66
67 int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
68                                       VAAPIDecodePicture *pic,
69                                       int type,
70                                       const void *data,
71                                       size_t size);
72
73 int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
74                                       VAAPIDecodePicture *pic,
75                                       const void *params_data,
76                                       size_t params_size,
77                                       const void *slice_data,
78                                       size_t slice_size);
79
80 int ff_vaapi_decode_issue(AVCodecContext *avctx,
81                           VAAPIDecodePicture *pic);
82 int ff_vaapi_decode_cancel(AVCodecContext *avctx,
83                            VAAPIDecodePicture *pic);
84
85 int ff_vaapi_decode_init(AVCodecContext *avctx);
86 int ff_vaapi_decode_uninit(AVCodecContext *avctx);
87
88 int ff_vaapi_common_frame_params(AVCodecContext *avctx,
89                                  AVBufferRef *hw_frames_ctx);
90
91 #endif /* AVCODEC_VAAPI_DECODE_H */