FFmpeg
qsvenc_mpeg2.c
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1 /*
2  * Intel MediaSDK QSV based MPEG-2 encoder
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 
22 #include <stdint.h>
23 #include <sys/types.h>
24 
25 #include <mfx/mfxvideo.h>
26 
27 #include "libavutil/common.h"
28 #include "libavutil/opt.h"
29 
30 #include "avcodec.h"
31 #include "internal.h"
32 #include "qsv.h"
33 #include "qsv_internal.h"
34 #include "qsvenc.h"
35 
36 typedef struct QSVMpeg2EncContext {
37  AVClass *class;
40 
42 {
43  QSVMpeg2EncContext *q = avctx->priv_data;
44 
45  return ff_qsv_enc_init(avctx, &q->qsv);
46 }
47 
49  const AVFrame *frame, int *got_packet)
50 {
51  QSVMpeg2EncContext *q = avctx->priv_data;
52 
53  return ff_qsv_encode(avctx, &q->qsv, pkt, frame, got_packet);
54 }
55 
57 {
58  QSVMpeg2EncContext *q = avctx->priv_data;
59 
60  return ff_qsv_enc_close(avctx, &q->qsv);
61 }
62 
63 #define OFFSET(x) offsetof(QSVMpeg2EncContext, x)
64 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
65 static const AVOption options[] = {
67 
68  { "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" },
69  { "unknown", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, VE, "profile" },
70  { "simple", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_MPEG2_SIMPLE }, INT_MIN, INT_MAX, VE, "profile" },
71  { "main", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_MPEG2_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
72  { "high", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_MPEG2_HIGH }, INT_MIN, INT_MAX, VE, "profile" },
73 
74  { NULL },
75 };
76 
77 static const AVClass class = {
78  .class_name = "mpeg2_qsv encoder",
79  .item_name = av_default_item_name,
80  .option = options,
82 };
83 
84 static const AVCodecDefault qsv_enc_defaults[] = {
85  { "b", "1M" },
86  { "refs", "0" },
87  // same as the x264 default
88  { "g", "250" },
89  { "bf", "3" },
90  { "trellis", "-1" },
91  { "flags", "+cgop" },
92 #if FF_API_PRIVATE_OPT
93  { "b_strategy", "-1" },
94 #endif
95  { NULL },
96 };
97 
99  .name = "mpeg2_qsv",
100  .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video (Intel Quick Sync Video acceleration)"),
101  .priv_data_size = sizeof(QSVMpeg2EncContext),
104  .init = qsv_enc_init,
105  .encode2 = qsv_enc_frame,
106  .close = qsv_enc_close,
107  .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HYBRID,
108  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
110  AV_PIX_FMT_NONE },
111  .priv_class = &class,
112  .defaults = qsv_enc_defaults,
113  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
114  .wrapper_name = "qsv",
115 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#define NULL
Definition: coverity.c:32
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static const AVOption options[]
Definition: qsvenc_mpeg2.c:65
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
GLint GLenum type
Definition: opengl_enc.c:104
static AVPacket pkt
static av_cold int qsv_enc_close(AVCodecContext *avctx)
Definition: qsvenc_mpeg2.c:56
AVCodec.
Definition: avcodec.h:3492
AVCodec ff_mpeg2_qsv_encoder
Definition: qsvenc_mpeg2.c:98
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:1009
int ff_qsv_encode(AVCodecContext *avctx, QSVEncContext *q, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: qsvenc.c:1414
#define av_cold
Definition: attributes.h:82
AVOptions.
#define VE
Definition: qsvenc_mpeg2.c:64
#define QSV_COMMON_OPTS
Definition: qsvenc.h:73
int ff_qsv_enc_close(AVCodecContext *avctx, QSVEncContext *q)
Definition: qsvenc.c:1506
static int qsv_enc_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: qsvenc_mpeg2.c:48
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
const char * name
Name of the codec implementation.
Definition: avcodec.h:3499
#define OFFSET(x)
Definition: qsvenc_mpeg2.c:63
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
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:220
static av_cold int qsv_enc_init(AVCodecContext *avctx)
Definition: qsvenc_mpeg2.c:41
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1568
int profile
Definition: qsvenc.h:145
#define AV_CODEC_CAP_HYBRID
Codec is potentially backed by a hardware implementation, but not necessarily.
Definition: avcodec.h:1088
Describe the class of an AVClass context structure.
Definition: log.h:67
int ff_qsv_enc_init(AVCodecContext *avctx, QSVEncContext *q)
Definition: qsvenc.c:997
HW acceleration through QSV, data[3] contains a pointer to the mfxFrameSurface1 structure.
Definition: pixfmt.h:222
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
common internal api header.
common internal and external API header
QSVEncContext qsv
Definition: qsvenc_mpeg2.c:38
void * priv_data
Definition: avcodec.h:1595
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: avcodec.h:1457
static const AVCodecDefault qsv_enc_defaults[]
Definition: qsvenc_mpeg2.c:84