git.sesse.net Git - ffmpeg/blob - libavcodec/nvdec_vc1.c

   1 /*
   2  * VC1 HW decode acceleration through NVDEC
   3  *
   4  * Copyright (c) 2017 Philip Langdale
   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 #include "avcodec.h"
  24 #include "nvdec.h"
  25 #include "decode.h"
  26 #include "vc1.h"
  27
  28 static int nvdec_vc1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
  29 {
  30     VC1Context *v = avctx->priv_data;
  31     MpegEncContext *s = &v->s;
  32
  33     NVDECContext      *ctx = avctx->internal->hwaccel_priv_data;
  34     CUVIDPICPARAMS     *pp = &ctx->pic_params;
  35     FrameDecodeData *fdd;
  36     NVDECFrame *cf;
  37     AVFrame *cur_frame = s->current_picture.f;
  38
  39     int ret;
  40
  41     ret = ff_nvdec_start_frame(avctx, cur_frame);
  42     if (ret < 0)
  43         return ret;
  44
  45     fdd = (FrameDecodeData*)cur_frame->private_ref->data;
  46     cf  = (NVDECFrame*)fdd->hwaccel_priv;
  47
  48     *pp = (CUVIDPICPARAMS) {
  49         .PicWidthInMbs     = (cur_frame->width  + 15) / 16,
  50         .FrameHeightInMbs  = (cur_frame->height + 15) / 16,
  51         .CurrPicIdx        = cf->idx,
  52         .field_pic_flag    = v->field_mode,
  53         .bottom_field_flag = v->cur_field_type,
  54         .second_field      = v->second_field,
  55
  56         .intra_pic_flag    = s->pict_type == AV_PICTURE_TYPE_I ||
  57                              s->pict_type == AV_PICTURE_TYPE_BI,
  58         .ref_pic_flag      = s->pict_type == AV_PICTURE_TYPE_I ||
  59                              s->pict_type == AV_PICTURE_TYPE_P,
  60
  61         .CodecSpecific.vc1 = {
  62             .ForwardRefIdx     = ff_nvdec_get_ref_idx(s->last_picture.f),
  63             .BackwardRefIdx    = ff_nvdec_get_ref_idx(s->next_picture.f),
  64             .FrameWidth        = cur_frame->width,
  65             .FrameHeight       = cur_frame->height,
  66
  67             .intra_pic_flag    = s->pict_type == AV_PICTURE_TYPE_I ||
  68                                  s->pict_type == AV_PICTURE_TYPE_BI,
  69             .ref_pic_flag      = s->pict_type == AV_PICTURE_TYPE_I ||
  70                                  s->pict_type == AV_PICTURE_TYPE_P,
  71             .progressive_fcm   = v->fcm == 0,
  72
  73             .profile           = v->profile,
  74             .postprocflag      = v->postprocflag,
  75             .pulldown          = v->broadcast,
  76             .interlace         = v->interlace,
  77             .tfcntrflag        = v->tfcntrflag,
  78             .finterpflag       = v->finterpflag,
  79             .psf               = v->psf,
  80             .multires          = v->multires,
  81             .syncmarker        = v->resync_marker,
  82             .rangered          = v->rangered,
  83             .maxbframes        = s->max_b_frames,
  84
  85             .panscan_flag      = v->panscanflag,
  86             .refdist_flag      = v->refdist_flag,
  87             .extended_mv       = v->extended_mv,
  88             .dquant            = v->dquant,
  89             .vstransform       = v->vstransform,
  90             .loopfilter        = v->s.loop_filter,
  91             .fastuvmc          = v->fastuvmc,
  92             .overlap           = v->overlap,
  93             .quantizer         = v->quantizer_mode,
  94             .extended_dmv      = v->extended_dmv,
  95             .range_mapy_flag   = v->range_mapy_flag,
  96             .range_mapy        = v->range_mapy,
  97             .range_mapuv_flag  = v->range_mapuv_flag,
  98             .range_mapuv       = v->range_mapuv,
  99             .rangeredfrm       = v->rangeredfrm,
 100         }
 101     };
 102
 103     return 0;
 104 }
 105
 106 static int nvdec_vc1_frame_params(AVCodecContext *avctx,
 107                                   AVBufferRef *hw_frames_ctx)
 108 {
 109     // Each frame can at most have one P and one B reference
 110     return ff_nvdec_frame_params(avctx, hw_frames_ctx, 2, 0);
 111 }
 112
 113 const AVHWAccel ff_vc1_nvdec_hwaccel = {
 114     .name                 = "vc1_nvdec",
 115     .type                 = AVMEDIA_TYPE_VIDEO,
 116     .id                   = AV_CODEC_ID_VC1,
 117     .pix_fmt              = AV_PIX_FMT_CUDA,
 118     .start_frame          = nvdec_vc1_start_frame,
 119     .end_frame            = ff_nvdec_simple_end_frame,
 120     .decode_slice         = ff_nvdec_simple_decode_slice,
 121     .frame_params         = nvdec_vc1_frame_params,
 122     .init                 = ff_nvdec_decode_init,
 123     .uninit               = ff_nvdec_decode_uninit,
 124     .priv_data_size       = sizeof(NVDECContext),
 125 };
 126
 127 #if CONFIG_WMV3_NVDEC_HWACCEL
 128 const AVHWAccel ff_wmv3_nvdec_hwaccel = {
 129     .name                 = "wmv3_nvdec",
 130     .type                 = AVMEDIA_TYPE_VIDEO,
 131     .id                   = AV_CODEC_ID_WMV3,
 132     .pix_fmt              = AV_PIX_FMT_CUDA,
 133     .start_frame          = nvdec_vc1_start_frame,
 134     .end_frame            = ff_nvdec_simple_end_frame,
 135     .decode_slice         = ff_nvdec_simple_decode_slice,
 136     .frame_params         = nvdec_vc1_frame_params,
 137     .init                 = ff_nvdec_decode_init,
 138     .uninit               = ff_nvdec_decode_uninit,
 139     .priv_data_size       = sizeof(NVDECContext),
 140 };
 141 #endif