1 /*
2 * VC1 HW decode acceleration through NVDEC
3 *
4 * Copyright (c) 2017 Philip Langdale
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 "avcodec.h"
24 #include "nvdec.h"
25 #include "decode.h"
26 #include "vc1.h"
27
nvdec_vc1_start_frame(AVCodecContext * avctx,const uint8_t * buffer,uint32_t size)28 static int nvdec_vc1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
29 {
30 VC1Context *v = avctx->priv_data;
31 MpegEncContext *s = &v->s;
32
33 NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
34 CUVIDPICPARAMS *pp = &ctx->pic_params;
35 FrameDecodeData *fdd;
36 NVDECFrame *cf;
37 AVFrame *cur_frame = s->current_picture.f;
38
39 int ret;
40
41 ret = ff_nvdec_start_frame(avctx, cur_frame);
42 if (ret < 0)
43 return ret;
44
45 fdd = (FrameDecodeData*)cur_frame->private_ref->data;
46 cf = (NVDECFrame*)fdd->hwaccel_priv;
47
48 *pp = (CUVIDPICPARAMS) {
49 .PicWidthInMbs = (cur_frame->width + 15) / 16,
50 .FrameHeightInMbs = (cur_frame->height + 15) / 16,
51 .CurrPicIdx = cf->idx,
52 .field_pic_flag = v->field_mode,
53 .bottom_field_flag = v->cur_field_type,
54 .second_field = v->second_field,
55
56 .intra_pic_flag = s->pict_type == AV_PICTURE_TYPE_I ||
57 s->pict_type == AV_PICTURE_TYPE_BI,
58 .ref_pic_flag = s->pict_type == AV_PICTURE_TYPE_I ||
59 s->pict_type == AV_PICTURE_TYPE_P,
60
61 .CodecSpecific.vc1 = {
62 .ForwardRefIdx = ff_nvdec_get_ref_idx(s->last_picture.f),
63 .BackwardRefIdx = ff_nvdec_get_ref_idx(s->next_picture.f),
64 .FrameWidth = cur_frame->width,
65 .FrameHeight = cur_frame->height,
66
67 .intra_pic_flag = s->pict_type == AV_PICTURE_TYPE_I ||
68 s->pict_type == AV_PICTURE_TYPE_BI,
69 .ref_pic_flag = s->pict_type == AV_PICTURE_TYPE_I ||
70 s->pict_type == AV_PICTURE_TYPE_P,
71 .progressive_fcm = v->fcm == 0,
72
73 .profile = v->profile,
74 .postprocflag = v->postprocflag,
75 .pulldown = v->broadcast,
76 .interlace = v->interlace,
77 .tfcntrflag = v->tfcntrflag,
78 .finterpflag = v->finterpflag,
79 .psf = v->psf,
80 .multires = v->multires,
81 .syncmarker = v->resync_marker,
82 .rangered = v->rangered,
83 .maxbframes = s->max_b_frames,
84
85 .panscan_flag = v->panscanflag,
86 .refdist_flag = v->refdist_flag,
87 .extended_mv = v->extended_mv,
88 .dquant = v->dquant,
89 .vstransform = v->vstransform,
90 .loopfilter = v->s.loop_filter,
91 .fastuvmc = v->fastuvmc,
92 .overlap = v->overlap,
93 .quantizer = v->quantizer_mode,
94 .extended_dmv = v->extended_dmv,
95 .range_mapy_flag = v->range_mapy_flag,
96 .range_mapy = v->range_mapy,
97 .range_mapuv_flag = v->range_mapuv_flag,
98 .range_mapuv = v->range_mapuv,
99 .rangeredfrm = v->rangeredfrm,
100 }
101 };
102
103 return 0;
104 }
105
nvdec_vc1_frame_params(AVCodecContext * avctx,AVBufferRef * hw_frames_ctx)106 static int nvdec_vc1_frame_params(AVCodecContext *avctx,
107 AVBufferRef *hw_frames_ctx)
108 {
109 // Each frame can at most have one P and one B reference
110 return ff_nvdec_frame_params(avctx, hw_frames_ctx, 2, 0);
111 }
112
113 const AVHWAccel ff_vc1_nvdec_hwaccel = {
114 .name = "vc1_nvdec",
115 .type = AVMEDIA_TYPE_VIDEO,
116 .id = AV_CODEC_ID_VC1,
117 .pix_fmt = AV_PIX_FMT_CUDA,
118 .start_frame = nvdec_vc1_start_frame,
119 .end_frame = ff_nvdec_simple_end_frame,
120 .decode_slice = ff_nvdec_simple_decode_slice,
121 .frame_params = nvdec_vc1_frame_params,
122 .init = ff_nvdec_decode_init,
123 .uninit = ff_nvdec_decode_uninit,
124 .priv_data_size = sizeof(NVDECContext),
125 };
126
127 #if CONFIG_WMV3_NVDEC_HWACCEL
128 const AVHWAccel ff_wmv3_nvdec_hwaccel = {
129 .name = "wmv3_nvdec",
130 .type = AVMEDIA_TYPE_VIDEO,
131 .id = AV_CODEC_ID_WMV3,
132 .pix_fmt = AV_PIX_FMT_CUDA,
133 .start_frame = nvdec_vc1_start_frame,
134 .end_frame = ff_nvdec_simple_end_frame,
135 .decode_slice = ff_nvdec_simple_decode_slice,
136 .frame_params = nvdec_vc1_frame_params,
137 .init = ff_nvdec_decode_init,
138 .uninit = ff_nvdec_decode_uninit,
139 .priv_data_size = sizeof(NVDECContext),
140 };
141 #endif
142