libavcodec/qsvenc_mpeg2.c

   1 /*
   2  * Intel MediaSDK QSV based MPEG-2 encoder
   3  *
   4  * This file is part of Libav.
   5  *
   6  * Libav 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  * Libav 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 Libav; 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;
  38     QSVEncContext qsv;
  39 } QSVMpeg2EncContext;
  40
  41 static av_cold int qsv_enc_init(AVCodecContext *avctx)
  42 {
  43     QSVMpeg2EncContext *q = avctx->priv_data;
  44
  45     return ff_qsv_enc_init(avctx, &q->qsv);
  46 }
  47
  48 static int qsv_enc_frame(AVCodecContext *avctx, AVPacket *pkt,
  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
  56 static av_cold int qsv_enc_close(AVCodecContext *avctx)
  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[] = {
  66     QSV_COMMON_OPTS
  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,
  81     .version    = LIBAVUTIL_VERSION_INT,
  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
  91     { "flags",     "+cgop" },
  92 #if FF_API_PRIVATE_OPT
  93     { "b_strategy", "-1"   },
  94 #endif
  95     { NULL },
  96 };
  97
  98 AVCodec ff_mpeg2_qsv_encoder = {
  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),
 102     .type           = AVMEDIA_TYPE_VIDEO,
 103     .id             = AV_CODEC_ID_MPEG2VIDEO,
 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,
 109                                                     AV_PIX_FMT_QSV,
 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 };