1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* MPEG-1/2 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 "config_components.h"
#include "avcodec.h"
#include "hwaccel_internal.h"
#include "internal.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "nvdec.h"
#include "decode.h"
static int nvdec_mpeg12_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
MpegEncContext *s = avctx->priv_data;
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
CUVIDPICPARAMS *pp = &ctx->pic_params;
CUVIDMPEG2PICPARAMS *ppc = &pp->CodecSpecific.mpeg2;
FrameDecodeData *fdd;
NVDECFrame *cf;
AVFrame *cur_frame = s->cur_pic.f;
int ret, i;
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 = s->picture_structure != PICT_FRAME,
.bottom_field_flag = s->picture_structure == PICT_BOTTOM_FIELD,
.second_field = s->picture_structure != PICT_FRAME && !s->first_field,
.intra_pic_flag = s->pict_type == AV_PICTURE_TYPE_I,
.ref_pic_flag = s->pict_type == AV_PICTURE_TYPE_I ||
s->pict_type == AV_PICTURE_TYPE_P,
.CodecSpecific.mpeg2 = {
.ForwardRefIdx = ff_nvdec_get_ref_idx(s->last_pic.f),
.BackwardRefIdx = ff_nvdec_get_ref_idx(s->next_pic.f),
.picture_coding_type = s->pict_type,
.full_pel_forward_vector = s->full_pel[0],
.full_pel_backward_vector = s->full_pel[1],
.f_code = { { s->mpeg_f_code[0][0],
s->mpeg_f_code[0][1] },
{ s->mpeg_f_code[1][0],
s->mpeg_f_code[1][1] } },
.intra_dc_precision = s->intra_dc_precision,
.frame_pred_frame_dct = s->frame_pred_frame_dct,
.concealment_motion_vectors = s->concealment_motion_vectors,
.q_scale_type = s->q_scale_type,
.intra_vlc_format = s->intra_vlc_format,
.alternate_scan = s->alternate_scan,
.top_field_first = s->top_field_first,
}
};
for (i = 0; i < 64; ++i) {
int n = s->idsp.idct_permutation[i];
ppc->QuantMatrixIntra[i] = s->intra_matrix[n];
ppc->QuantMatrixInter[i] = s->inter_matrix[n];
}
return 0;
}
static int nvdec_mpeg12_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, 0);
}
#if CONFIG_MPEG2_NVDEC_HWACCEL
const FFHWAccel ff_mpeg2_nvdec_hwaccel = {
.p.name = "mpeg2_nvdec",
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_MPEG2VIDEO,
.p.pix_fmt = AV_PIX_FMT_CUDA,
.start_frame = nvdec_mpeg12_start_frame,
.end_frame = ff_nvdec_simple_end_frame,
.decode_slice = ff_nvdec_simple_decode_slice,
.frame_params = nvdec_mpeg12_frame_params,
.init = ff_nvdec_decode_init,
.uninit = ff_nvdec_decode_uninit,
.priv_data_size = sizeof(NVDECContext),
};
#endif
#if CONFIG_MPEG1_NVDEC_HWACCEL
const FFHWAccel ff_mpeg1_nvdec_hwaccel = {
.p.name = "mpeg1_nvdec",
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_MPEG1VIDEO,
.p.pix_fmt = AV_PIX_FMT_CUDA,
.start_frame = nvdec_mpeg12_start_frame,
.end_frame = ff_nvdec_simple_end_frame,
.decode_slice = ff_nvdec_simple_decode_slice,
.frame_params = nvdec_mpeg12_frame_params,
.init = ff_nvdec_decode_init,
.uninit = ff_nvdec_decode_uninit,
.priv_data_size = sizeof(NVDECContext),
};
#endif
|
