FFmpeg
qsvdec.h
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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 "hwconfig.h"
37 #include "qsv_internal.h"
38 
39 typedef struct QSVContext {
40  // the session used for decoding
41  mfxSession session;
42 
43  // the session we allocated internally, in case the caller did not provide
44  // one
46 
48 
49  /**
50  * a linked list of frames currently being used by QSV
51  */
53 
58 
60  uint32_t fourcc;
61  mfxFrameInfo frame_info;
63 
65 
66  // options set by the caller
68  int iopattern;
69  int gpu_copy;
70 
71  char *load_plugins;
72 
73  mfxExtBuffer **ext_buffers;
75 } QSVContext;
76 
78 
80  AVFrame *frame, int *got_frame, AVPacket *pkt);
81 
83 
85 
86 #endif /* AVCODEC_QSVDEC_H */
int iopattern
Definition: qsvdec.h:68
This structure describes decoded (raw) audio or video data.
Definition: frame.h:308
mfxExtBuffer ** ext_buffers
Definition: qsvdec.h:73
const AVCodecHWConfigInternal * ff_qsv_hw_configs[]
Definition: qsvdec.c:46
static AVPacket pkt
QSVSession internal_qs
Definition: qsvdec.h:45
The buffer pool.
int reinit_flag
Definition: qsvdec.h:57
reference-counted frame API
int buffered_count
Definition: qsvdec.h:56
int zero_consume_run
Definition: qsvdec.h:55
AVBufferPool * pool
Definition: qsvdec.h:62
void ff_qsv_decode_flush(AVCodecContext *avctx, QSVContext *q)
Definition: qsvdec.c:631
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
enum AVPixelFormat orig_pix_fmt
Definition: qsvdec.h:59
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:526
a very simple circular buffer FIFO implementation
int gpu_copy
Definition: qsvdec.h:69
char * load_plugins
Definition: qsvdec.h:71
int ff_qsv_decode_close(QSVContext *q)
Definition: qsvdec.c:533
mfxFrameInfo frame_info
Definition: qsvdec.h:61
pixel format definitions
QSVFramesContext frames_ctx
Definition: qsvdec.h:47
mfxSession session
Definition: qsvdec.h:41
AVFifoBuffer * async_fifo
Definition: qsvdec.h:54
uint32_t fourcc
Definition: qsvdec.h:60
int initialized
Definition: qsvdec.h:64
int async_depth
Definition: qsvdec.h:67
int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: qsvdec.c:569
QSVFrame * work_frames
a linked list of frames currently being used by QSV
Definition: qsvdec.h:52
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: packet.h:340
int nb_ext_buffers
Definition: qsvdec.h:74