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qsvdec_vc1.c
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1 /*
2  * Intel MediaSDK QSV based VC-1 video decoder
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
24 #include "libavutil/common.h"
25 #include "libavutil/fifo.h"
26 #include "libavutil/opt.h"
27 
28 #include "avcodec.h"
29 #include "qsvdec.h"
30 
31 typedef struct QSVVC1Context {
32  AVClass *class;
35 
36 
38 {
39  QSVVC1Context *s = avctx->priv_data;
40 
42 
43  return 0;
44 }
45 
46 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
47  int *got_frame, AVPacket *avpkt)
48 {
49  QSVVC1Context *s = avctx->priv_data;
50  AVFrame *frame = data;
51 
52  return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
53 }
54 
55 static void qsv_decode_flush(AVCodecContext *avctx)
56 {
57  QSVVC1Context *s = avctx->priv_data;
58  ff_qsv_decode_reset(avctx, &s->qsv);
59 }
60 
62  .name = "vc1_qsv",
63  .type = AVMEDIA_TYPE_VIDEO,
64  .id = AV_CODEC_ID_VC1,
65  .pix_fmt = AV_PIX_FMT_QSV,
66 };
67 
68 #define OFFSET(x) offsetof(QSVVC1Context, x)
69 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
70 static const AVOption options[] = {
71  { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VD },
72  { NULL },
73 };
74 
75 static const AVClass class = {
76  .class_name = "vc1_qsv",
77  .item_name = av_default_item_name,
78  .option = options,
80 };
81 
83  .name = "vc1_qsv",
84  .long_name = NULL_IF_CONFIG_SMALL("VC-1 video (Intel Quick Sync Video acceleration)"),
85  .priv_data_size = sizeof(QSVVC1Context),
87  .id = AV_CODEC_ID_VC1,
88  .init = NULL,
91  .close = qsv_decode_close,
92  .capabilities = AV_CODEC_CAP_DELAY,
93  .priv_class = &class,
94  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
97 };
#define VD
Definition: qsvdec_vc1.c:69
QSVContext qsv
Definition: qsvdec_vc1.c:33
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:631
int ff_qsv_decode(AVCodecContext *avctx, QSVContext *q, AVFrame *frame, int *got_frame, AVPacket *avpkt)
Definition: qsvdec.c:471
This structure describes decoded (raw) audio or video data.
Definition: frame.h:181
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static void flush(AVCodecContext *avctx)
static const AVOption options[]
Definition: qsvdec_vc1.c:70
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
AVHWAccel ff_vc1_qsv_hwaccel
Definition: qsvdec_vc1.c:61
AVCodec.
Definition: avcodec.h:3392
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:881
void ff_qsv_decode_reset(AVCodecContext *avctx, QSVContext *q)
Definition: qsvdec.c:527
#define av_cold
Definition: attributes.h:82
AVOptions.
int ff_qsv_decode_close(QSVContext *q)
Definition: qsvdec.c:570
static AVFrame * frame
static int qsv_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: qsvdec_vc1.c:46
static av_cold int qsv_decode_close(AVCodecContext *avctx)
Definition: qsvdec_vc1.c:37
av_default_item_name
#define OFFSET(x)
Definition: qsvdec_vc1.c:68
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:91
const char * name
Name of the codec implementation.
Definition: avcodec.h:3399
#define ASYNC_DEPTH_DEFAULT
Definition: qsv_internal.h:46
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3503
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1532
a very simple circular buffer FIFO implementation
GLint GLenum type
Definition: opengl_enc.c:105
Describe the class of an AVClass context structure.
Definition: log.h:67
HW acceleration through QSV, data[3] contains a pointer to the mfxFrameSurface1 structure.
Definition: pixfmt.h:236
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
AVCodec ff_vc1_qsv_decoder
Definition: qsvdec_vc1.c:82
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:572
common internal and external API header
void * priv_data
Definition: avcodec.h:1574
static void qsv_decode_flush(AVCodecContext *avctx)
Definition: qsvdec_vc1.c:55
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
This structure stores compressed data.
Definition: avcodec.h:1444