185 lines
6.7 KiB
C
185 lines
6.7 KiB
C
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/*
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* VP9 HW decode acceleration through NVDEC
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*
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* Copyright (c) 2016 Timo Rothenpieler
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/pixdesc.h"
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#include "avcodec.h"
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#include "nvdec.h"
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#include "decode.h"
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#include "internal.h"
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#include "vp9shared.h"
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static int nvdec_vp9_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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VP9SharedContext *h = avctx->priv_data;
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const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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CUVIDPICPARAMS *pp = &ctx->pic_params;
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CUVIDVP9PICPARAMS *ppc = &pp->CodecSpecific.vp9;
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FrameDecodeData *fdd;
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NVDECFrame *cf;
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AVFrame *cur_frame = h->frames[CUR_FRAME].tf.f;
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int ret, i;
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ret = ff_nvdec_start_frame(avctx, cur_frame);
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if (ret < 0)
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return ret;
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fdd = (FrameDecodeData*)cur_frame->private_ref->data;
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cf = (NVDECFrame*)fdd->hwaccel_priv;
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*pp = (CUVIDPICPARAMS) {
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.PicWidthInMbs = (cur_frame->width + 15) / 16,
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.FrameHeightInMbs = (cur_frame->height + 15) / 16,
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.CurrPicIdx = cf->idx,
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.CodecSpecific.vp9 = {
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.width = cur_frame->width,
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.height = cur_frame->height,
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.LastRefIdx = ff_nvdec_get_ref_idx(h->refs[h->h.refidx[0]].f),
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.GoldenRefIdx = ff_nvdec_get_ref_idx(h->refs[h->h.refidx[1]].f),
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.AltRefIdx = ff_nvdec_get_ref_idx(h->refs[h->h.refidx[2]].f),
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.profile = h->h.profile,
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.frameContextIdx = h->h.framectxid,
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.frameType = !h->h.keyframe,
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.showFrame = !h->h.invisible,
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.errorResilient = h->h.errorres,
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.frameParallelDecoding = h->h.parallelmode,
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.subSamplingX = pixdesc->log2_chroma_w,
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.subSamplingY = pixdesc->log2_chroma_h,
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.intraOnly = h->h.intraonly,
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.allow_high_precision_mv = h->h.keyframe ? 0 : h->h.highprecisionmvs,
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.refreshEntropyProbs = h->h.refreshctx,
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.bitDepthMinus8Luma = pixdesc->comp[0].depth - 8,
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.bitDepthMinus8Chroma = pixdesc->comp[1].depth - 8,
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.loopFilterLevel = h->h.filter.level,
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.loopFilterSharpness = h->h.filter.sharpness,
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.modeRefLfEnabled = h->h.lf_delta.enabled,
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.log2_tile_columns = h->h.tiling.log2_tile_cols,
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.log2_tile_rows = h->h.tiling.log2_tile_rows,
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.segmentEnabled = h->h.segmentation.enabled,
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.segmentMapUpdate = h->h.segmentation.update_map,
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.segmentMapTemporalUpdate = h->h.segmentation.temporal,
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.segmentFeatureMode = h->h.segmentation.absolute_vals,
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.qpYAc = h->h.yac_qi,
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.qpYDc = h->h.ydc_qdelta,
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.qpChDc = h->h.uvdc_qdelta,
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.qpChAc = h->h.uvac_qdelta,
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.resetFrameContext = h->h.resetctx,
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.mcomp_filter_type = h->h.filtermode ^ (h->h.filtermode <= 1),
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.frameTagSize = h->h.uncompressed_header_size,
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.offsetToDctParts = h->h.compressed_header_size,
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.refFrameSignBias[0] = 0,
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}
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};
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for (i = 0; i < 2; i++)
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ppc->mbModeLfDelta[i] = h->h.lf_delta.mode[i];
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for (i = 0; i < 4; i++)
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ppc->mbRefLfDelta[i] = h->h.lf_delta.ref[i];
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for (i = 0; i < 7; i++)
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ppc->mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
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for (i = 0; i < 3; i++) {
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ppc->activeRefIdx[i] = h->h.refidx[i];
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ppc->segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
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ppc->refFrameSignBias[i + 1] = h->h.signbias[i];
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}
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for (i = 0; i < 8; i++) {
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ppc->segmentFeatureEnable[i][0] = h->h.segmentation.feat[i].q_enabled;
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ppc->segmentFeatureEnable[i][1] = h->h.segmentation.feat[i].lf_enabled;
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ppc->segmentFeatureEnable[i][2] = h->h.segmentation.feat[i].ref_enabled;
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ppc->segmentFeatureEnable[i][3] = h->h.segmentation.feat[i].skip_enabled;
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ppc->segmentFeatureData[i][0] = h->h.segmentation.feat[i].q_val;
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ppc->segmentFeatureData[i][1] = h->h.segmentation.feat[i].lf_val;
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ppc->segmentFeatureData[i][2] = h->h.segmentation.feat[i].ref_val;
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ppc->segmentFeatureData[i][3] = 0;
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}
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switch (avctx->colorspace) {
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default:
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case AVCOL_SPC_UNSPECIFIED:
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ppc->colorSpace = 0;
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break;
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case AVCOL_SPC_BT470BG:
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ppc->colorSpace = 1;
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break;
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case AVCOL_SPC_BT709:
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ppc->colorSpace = 2;
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break;
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case AVCOL_SPC_SMPTE170M:
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ppc->colorSpace = 3;
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break;
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case AVCOL_SPC_SMPTE240M:
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ppc->colorSpace = 4;
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break;
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case AVCOL_SPC_BT2020_NCL:
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ppc->colorSpace = 5;
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break;
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case AVCOL_SPC_RESERVED:
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ppc->colorSpace = 6;
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break;
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case AVCOL_SPC_RGB:
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ppc->colorSpace = 7;
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break;
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}
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return 0;
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}
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static int nvdec_vp9_frame_params(AVCodecContext *avctx,
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AVBufferRef *hw_frames_ctx)
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{
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// VP9 uses a fixed size pool of 8 possible reference frames
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return ff_nvdec_frame_params(avctx, hw_frames_ctx, 8, 0);
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}
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const AVHWAccel ff_vp9_nvdec_hwaccel = {
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.name = "vp9_nvdec",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_VP9,
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.pix_fmt = AV_PIX_FMT_CUDA,
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.start_frame = nvdec_vp9_start_frame,
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.end_frame = ff_nvdec_simple_end_frame,
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.decode_slice = ff_nvdec_simple_decode_slice,
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.frame_params = nvdec_vp9_frame_params,
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.init = ff_nvdec_decode_init,
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.uninit = ff_nvdec_decode_uninit,
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.priv_data_size = sizeof(NVDECContext),
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};
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