Timo Rothenpieler
7 years ago
parent
52bf0febb3
commit
f3f73f0893
8 changed files with 244 additions and 3 deletions
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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 unsigned char get_ref_idx(AVFrame *frame) |
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{ |
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FrameDecodeData *fdd; |
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NVDECFrame *cf; |
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if (!frame || !frame->private_ref) |
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return 255; |
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fdd = (FrameDecodeData*)frame->private_ref->data; |
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cf = (NVDECFrame*)fdd->hwaccel_priv; |
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return cf->idx; |
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} |
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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 = get_ref_idx(h->refs[h->h.refidx[0]].f), |
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.GoldenRefIdx = get_ref_idx(h->refs[h->h.refidx[1]].f), |
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.AltRefIdx = 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_end_frame(AVCodecContext *avctx) |
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{ |
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data; |
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int ret = ff_nvdec_end_frame(avctx); |
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ctx->bitstream = NULL; |
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return ret; |
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} |
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static int nvdec_vp9_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) |
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{ |
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data; |
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void *tmp; |
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tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated, |
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(ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets)); |
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if (!tmp) |
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return AVERROR(ENOMEM); |
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ctx->slice_offsets = tmp; |
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if (!ctx->bitstream) |
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ctx->bitstream = (uint8_t*)buffer; |
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ctx->slice_offsets[ctx->nb_slices] = buffer - ctx->bitstream; |
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ctx->bitstream_len += size; |
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ctx->nb_slices++; |
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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); |
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} |
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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 = nvdec_vp9_end_frame, |
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.decode_slice = nvdec_vp9_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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