diff options
author | Philip Langdale <philipl@overt.org> | 2017-11-14 08:09:27 +0300 |
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committer | Philip Langdale <philipl@overt.org> | 2017-11-15 06:40:01 +0300 |
commit | 912ceba61b0d45caa8ba8664ddf7b18e2121ddf3 (patch) | |
tree | 2b62171ba0a1978a479b4e4ee205e6310e28e187 /libavcodec/nvdec_vc1.c | |
parent | bb4c9d0a8ead02f7d943c2bae3e36b30e605b30b (diff) |
avcodec: Implement vc1 nvdec hwaccel
This hwaccel is interesting because it also works for wmv3/9 content,
which is not supported by the nvidia parser used by cuviddec.
Diffstat (limited to 'libavcodec/nvdec_vc1.c')
-rw-r--r-- | libavcodec/nvdec_vc1.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/libavcodec/nvdec_vc1.c b/libavcodec/nvdec_vc1.c new file mode 100644 index 0000000000..cf75ba5aca --- /dev/null +++ b/libavcodec/nvdec_vc1.c @@ -0,0 +1,184 @@ +/* + * VC1 HW decode acceleration through NVDEC + * + * Copyright (c) 2017 Philip Langdale + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avcodec.h" +#include "nvdec.h" +#include "decode.h" +#include "vc1.h" + +static unsigned char get_ref_idx(AVFrame *frame) +{ + FrameDecodeData *fdd; + NVDECFrame *cf; + + if (!frame || !frame->private_ref) + return 255; + + fdd = (FrameDecodeData*)frame->private_ref->data; + cf = (NVDECFrame*)fdd->hwaccel_priv; + + return cf->idx; +} + +static int nvdec_vc1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) +{ + VC1Context *v = avctx->priv_data; + MpegEncContext *s = &v->s; + + NVDECContext *ctx = avctx->internal->hwaccel_priv_data; + CUVIDPICPARAMS *pp = &ctx->pic_params; + FrameDecodeData *fdd; + NVDECFrame *cf; + AVFrame *cur_frame = s->current_picture.f; + + int ret; + + ret = ff_nvdec_start_frame(avctx, cur_frame); + if (ret < 0) + return ret; + + fdd = (FrameDecodeData*)cur_frame->private_ref->data; + cf = (NVDECFrame*)fdd->hwaccel_priv; + + *pp = (CUVIDPICPARAMS) { + .PicWidthInMbs = (cur_frame->width + 15) / 16, + .FrameHeightInMbs = (cur_frame->height + 15) / 16, + .CurrPicIdx = cf->idx, + .field_pic_flag = v->field_mode, + .bottom_field_flag = v->cur_field_type, + .second_field = v->second_field, + + .intra_pic_flag = s->pict_type == AV_PICTURE_TYPE_I || + s->pict_type == AV_PICTURE_TYPE_BI, + .ref_pic_flag = s->pict_type == AV_PICTURE_TYPE_I || + s->pict_type == AV_PICTURE_TYPE_P, + + .CodecSpecific.vc1 = { + .ForwardRefIdx = get_ref_idx(s->last_picture.f), + .BackwardRefIdx = get_ref_idx(s->next_picture.f), + .FrameWidth = cur_frame->width, + .FrameHeight = cur_frame->height, + + .intra_pic_flag = s->pict_type == AV_PICTURE_TYPE_I || + s->pict_type == AV_PICTURE_TYPE_BI, + .ref_pic_flag = s->pict_type == AV_PICTURE_TYPE_I || + s->pict_type == AV_PICTURE_TYPE_P, + .progressive_fcm = v->fcm == 0, + + .profile = v->profile, + .postprocflag = v->postprocflag, + .pulldown = v->broadcast, + .interlace = v->interlace, + .tfcntrflag = v->tfcntrflag, + .finterpflag = v->finterpflag, + .psf = v->psf, + .multires = v->multires, + .syncmarker = v->resync_marker, + .rangered = v->rangered, + .maxbframes = s->max_b_frames, + + .panscan_flag = v->panscanflag, + .refdist_flag = v->refdist_flag, + .extended_mv = v->extended_mv, + .dquant = v->dquant, + .vstransform = v->vstransform, + .loopfilter = v->s.loop_filter, + .fastuvmc = v->fastuvmc, + .overlap = v->overlap, + .quantizer = v->quantizer_mode, + .extended_dmv = v->extended_dmv, + .range_mapy_flag = v->range_mapy_flag, + .range_mapy = v->range_mapy, + .range_mapuv_flag = v->range_mapuv_flag, + .range_mapuv = v->range_mapuv, + .rangeredfrm = v->rangeredfrm, + } + }; + + return 0; +} + +static int nvdec_vc1_end_frame(AVCodecContext *avctx) +{ + NVDECContext *ctx = avctx->internal->hwaccel_priv_data; + int ret = ff_nvdec_end_frame(avctx); + ctx->bitstream = NULL; + return ret; +} + +static int nvdec_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) +{ + NVDECContext *ctx = avctx->internal->hwaccel_priv_data; + void *tmp; + + tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated, + (ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets)); + if (!tmp) + return AVERROR(ENOMEM); + ctx->slice_offsets = tmp; + + if (!ctx->bitstream) + ctx->bitstream = (uint8_t*)buffer; + + ctx->slice_offsets[ctx->nb_slices] = buffer - ctx->bitstream; + ctx->bitstream_len += size; + ctx->nb_slices++; + + return 0; +} + +static int nvdec_vc1_frame_params(AVCodecContext *avctx, + AVBufferRef *hw_frames_ctx) +{ + // Each frame can at most have one P and one B reference + return ff_nvdec_frame_params(avctx, hw_frames_ctx, 2); +} + +AVHWAccel ff_vc1_nvdec_hwaccel = { + .name = "vc1_nvdec", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_VC1, + .pix_fmt = AV_PIX_FMT_CUDA, + .start_frame = nvdec_vc1_start_frame, + .end_frame = nvdec_vc1_end_frame, + .decode_slice = nvdec_vc1_decode_slice, + .frame_params = nvdec_vc1_frame_params, + .init = ff_nvdec_decode_init, + .uninit = ff_nvdec_decode_uninit, + .priv_data_size = sizeof(NVDECContext), +}; + +#if CONFIG_WMV3_NVDEC_HWACCEL +AVHWAccel ff_wmv3_nvdec_hwaccel = { + .name = "wmv3_nvdec", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_WMV3, + .pix_fmt = AV_PIX_FMT_CUDA, + .start_frame = nvdec_vc1_start_frame, + .end_frame = nvdec_vc1_end_frame, + .decode_slice = nvdec_vc1_decode_slice, + .frame_params = nvdec_vc1_frame_params, + .init = ff_nvdec_decode_init, + .uninit = ff_nvdec_decode_uninit, + .priv_data_size = sizeof(NVDECContext), +}; +#endif |