git.sesse.net Git - ffmpeg/blob - libavcodec/nvdec_vp9.c

   1 /*
   2  * VP9 HW decode acceleration through NVDEC
   3  *
   4  * Copyright (c) 2016 Timo Rothenpieler
   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 "libavutil/pixdesc.h"
  24
  25 #include "avcodec.h"
  26 #include "nvdec.h"
  27 #include "decode.h"
  28 #include "internal.h"
  29 #include "vp9shared.h"
  30
  31 static int nvdec_vp9_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
  32 {
  33     VP9SharedContext *h = avctx->priv_data;
  34     const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
  35
  36     NVDECContext      *ctx = avctx->internal->hwaccel_priv_data;
  37     CUVIDPICPARAMS     *pp = &ctx->pic_params;
  38     CUVIDVP9PICPARAMS *ppc = &pp->CodecSpecific.vp9;
  39     FrameDecodeData *fdd;
  40     NVDECFrame *cf;
  41     AVFrame *cur_frame = h->frames[CUR_FRAME].tf.f;
  42
  43     int ret, i;
  44
  45     ret = ff_nvdec_start_frame(avctx, cur_frame);
  46     if (ret < 0)
  47         return ret;
  48
  49     fdd = (FrameDecodeData*)cur_frame->private_ref->data;
  50     cf  = (NVDECFrame*)fdd->hwaccel_priv;
  51
  52     *pp = (CUVIDPICPARAMS) {
  53         .PicWidthInMbs     = (cur_frame->width  + 15) / 16,
  54         .FrameHeightInMbs  = (cur_frame->height + 15) / 16,
  55         .CurrPicIdx        = cf->idx,
  56
  57         .CodecSpecific.vp9 = {
  58             .width                    = cur_frame->width,
  59             .height                   = cur_frame->height,
  60
  61             .LastRefIdx               = ff_nvdec_get_ref_idx(h->refs[h->h.refidx[0]].f),
  62             .GoldenRefIdx             = ff_nvdec_get_ref_idx(h->refs[h->h.refidx[1]].f),
  63             .AltRefIdx                = ff_nvdec_get_ref_idx(h->refs[h->h.refidx[2]].f),
  64
  65             .profile                  = h->h.profile,
  66             .frameContextIdx          = h->h.framectxid,
  67             .frameType                = !h->h.keyframe,
  68             .showFrame                = !h->h.invisible,
  69             .errorResilient           = h->h.errorres,
  70             .frameParallelDecoding    = h->h.parallelmode,
  71             .subSamplingX             = pixdesc->log2_chroma_w,
  72             .subSamplingY             = pixdesc->log2_chroma_h,
  73             .intraOnly                = h->h.intraonly,
  74             .allow_high_precision_mv  = h->h.keyframe ? 0 : h->h.highprecisionmvs,
  75             .refreshEntropyProbs      = h->h.refreshctx,
  76
  77             .bitDepthMinus8Luma       = pixdesc->comp[0].depth - 8,
  78             .bitDepthMinus8Chroma     = pixdesc->comp[1].depth - 8,
  79
  80             .loopFilterLevel          = h->h.filter.level,
  81             .loopFilterSharpness      = h->h.filter.sharpness,
  82             .modeRefLfEnabled         = h->h.lf_delta.enabled,
  83
  84             .log2_tile_columns        = h->h.tiling.log2_tile_cols,
  85             .log2_tile_rows           = h->h.tiling.log2_tile_rows,
  86
  87             .segmentEnabled           = h->h.segmentation.enabled,
  88             .segmentMapUpdate         = h->h.segmentation.update_map,
  89             .segmentMapTemporalUpdate = h->h.segmentation.temporal,
  90             .segmentFeatureMode       = h->h.segmentation.absolute_vals,
  91
  92             .qpYAc                    = h->h.yac_qi,
  93             .qpYDc                    = h->h.ydc_qdelta,
  94             .qpChDc                   = h->h.uvdc_qdelta,
  95             .qpChAc                   = h->h.uvac_qdelta,
  96
  97             .resetFrameContext        = h->h.resetctx,
  98             .mcomp_filter_type        = h->h.filtermode ^ (h->h.filtermode <= 1),
  99
 100             .frameTagSize             = h->h.uncompressed_header_size,
 101             .offsetToDctParts         = h->h.compressed_header_size,
 102
 103             .refFrameSignBias[0]      = 0,
 104         }
 105     };
 106
 107     for (i = 0; i < 2; i++)
 108         ppc->mbModeLfDelta[i] = h->h.lf_delta.mode[i];
 109
 110     for (i = 0; i < 4; i++)
 111         ppc->mbRefLfDelta[i] = h->h.lf_delta.ref[i];
 112
 113     for (i = 0; i < 7; i++)
 114         ppc->mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
 115
 116     for (i = 0; i < 3; i++) {
 117         ppc->activeRefIdx[i] = h->h.refidx[i];
 118         ppc->segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
 119         ppc->refFrameSignBias[i + 1] = h->h.signbias[i];
 120     }
 121
 122     for (i = 0; i < 8; i++) {
 123         ppc->segmentFeatureEnable[i][0] = h->h.segmentation.feat[i].q_enabled;
 124         ppc->segmentFeatureEnable[i][1] = h->h.segmentation.feat[i].lf_enabled;
 125         ppc->segmentFeatureEnable[i][2] = h->h.segmentation.feat[i].ref_enabled;
 126         ppc->segmentFeatureEnable[i][3] = h->h.segmentation.feat[i].skip_enabled;
 127
 128         ppc->segmentFeatureData[i][0] = h->h.segmentation.feat[i].q_val;
 129         ppc->segmentFeatureData[i][1] = h->h.segmentation.feat[i].lf_val;
 130         ppc->segmentFeatureData[i][2] = h->h.segmentation.feat[i].ref_val;
 131         ppc->segmentFeatureData[i][3] = 0;
 132     }
 133
 134     switch (avctx->colorspace) {
 135     default:
 136     case AVCOL_SPC_UNSPECIFIED:
 137         ppc->colorSpace = 0;
 138         break;
 139     case AVCOL_SPC_BT470BG:
 140         ppc->colorSpace = 1;
 141         break;
 142     case AVCOL_SPC_BT709:
 143         ppc->colorSpace = 2;
 144         break;
 145     case AVCOL_SPC_SMPTE170M:
 146         ppc->colorSpace = 3;
 147         break;
 148     case AVCOL_SPC_SMPTE240M:
 149         ppc->colorSpace = 4;
 150         break;
 151     case AVCOL_SPC_BT2020_NCL:
 152         ppc->colorSpace = 5;
 153         break;
 154     case AVCOL_SPC_RESERVED:
 155         ppc->colorSpace = 6;
 156         break;
 157     case AVCOL_SPC_RGB:
 158         ppc->colorSpace = 7;
 159         break;
 160     }
 161
 162     return 0;
 163 }
 164
 165 static int nvdec_vp9_frame_params(AVCodecContext *avctx,
 166                                   AVBufferRef *hw_frames_ctx)
 167 {
 168     // VP9 uses a fixed size pool of 8 possible reference frames
 169     return ff_nvdec_frame_params(avctx, hw_frames_ctx, 8, 0);
 170 }
 171
 172 const AVHWAccel ff_vp9_nvdec_hwaccel = {
 173     .name                 = "vp9_nvdec",
 174     .type                 = AVMEDIA_TYPE_VIDEO,
 175     .id                   = AV_CODEC_ID_VP9,
 176     .pix_fmt              = AV_PIX_FMT_CUDA,
 177     .start_frame          = nvdec_vp9_start_frame,
 178     .end_frame            = ff_nvdec_simple_end_frame,
 179     .decode_slice         = ff_nvdec_simple_decode_slice,
 180     .frame_params         = nvdec_vp9_frame_params,
 181     .init                 = ff_nvdec_decode_init,
 182     .uninit               = ff_nvdec_decode_uninit,
 183     .priv_data_size       = sizeof(NVDECContext),
 184 };