2 * Intel MediaSDK QSV utility functions
4 * copyright (c) 2013 Luca Barbato
6 * This file is part of FFmpeg.
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.
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.
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
23 #ifndef AVCODEC_QSVDEC_H
24 #define AVCODEC_QSVDEC_H
27 #include <sys/types.h>
29 #include <mfx/mfxvideo.h>
31 #include "libavutil/fifo.h"
32 #include "libavutil/frame.h"
33 #include "libavutil/pixfmt.h"
36 #include "qsv_internal.h"
38 typedef struct QSVContext {
39 // the session used for decoding
42 // the session we allocated internally, in case the caller did not provide
44 QSVSession internal_qs;
47 * a linked list of frames currently being used by QSV
49 QSVFrame *work_frames;
51 AVFifoBuffer *async_fifo;
52 AVFifoBuffer *input_fifo;
54 // we should to buffer input packets at some cases
55 // else it is not possible to handle dynamic stream changes correctly
56 // this fifo uses for input packets buffering
57 AVFifoBuffer *pkt_fifo;
59 // this flag indicates that header parsed,
60 // decoder instance created and ready to general decoding
63 // we can not just re-init decoder if different sequence header arrived
64 // we should to deliver all buffered frames but we can not decode new packets
65 // this time. So when reinit_pending is non-zero we flushing decoder and
66 // accumulate new arrived packets into pkt_fifo
69 // options set by the caller
75 mfxExtBuffer **ext_buffers;
79 int ff_qsv_map_pixfmt(enum AVPixelFormat format);
81 int ff_qsv_decode(AVCodecContext *s, QSVContext *q,
82 AVFrame *frame, int *got_frame,
85 void ff_qsv_decode_reset(AVCodecContext *avctx, QSVContext *q);
87 int ff_qsv_decode_close(QSVContext *q);
89 #endif /* AVCODEC_QSVDEC_H */