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/*
* 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 int get_ref_idx(AVFrame *frame)
{
FrameDecodeData *fdd;
NVDECFrame *cf;
if (!frame || !frame->private_ref)
return -1;
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
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