avcodec/idctdsp: Transmit studio_profile to init instead of using AVCodecContext...
[ffmpeg.git] / libavcodec / nvdec_vp8.c
1 /*
2  * VP8 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 "internal.h"
27 #include "vp8.h"
28
29 static unsigned char safe_get_ref_idx(VP8Frame *frame)
30 {
31     return frame ? ff_nvdec_get_ref_idx(frame->tf.f) : 255;
32 }
33
34 static int nvdec_vp8_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
35 {
36     VP8Context *h = avctx->priv_data;
37
38     NVDECContext      *ctx = avctx->internal->hwaccel_priv_data;
39     CUVIDPICPARAMS     *pp = &ctx->pic_params;
40     FrameDecodeData *fdd;
41     NVDECFrame *cf;
42     AVFrame *cur_frame = h->framep[VP56_FRAME_CURRENT]->tf.f;
43
44     int ret;
45
46     ret = ff_nvdec_start_frame(avctx, cur_frame);
47     if (ret < 0)
48         return ret;
49
50     fdd = (FrameDecodeData*)cur_frame->private_ref->data;
51     cf  = (NVDECFrame*)fdd->hwaccel_priv;
52
53     *pp = (CUVIDPICPARAMS) {
54         .PicWidthInMbs     = (cur_frame->width  + 15) / 16,
55         .FrameHeightInMbs  = (cur_frame->height + 15) / 16,
56         .CurrPicIdx        = cf->idx,
57
58         .CodecSpecific.vp8 = {
59             .width                       = cur_frame->width,
60             .height                      = cur_frame->height,
61
62             .first_partition_size        = h->header_partition_size,
63
64             .LastRefIdx                  = safe_get_ref_idx(h->framep[VP56_FRAME_PREVIOUS]),
65             .GoldenRefIdx                = safe_get_ref_idx(h->framep[VP56_FRAME_GOLDEN]),
66             .AltRefIdx                   = safe_get_ref_idx(h->framep[VP56_FRAME_GOLDEN2]),
67             /*
68              * Explicit braces for anonymous inners and unnamed fields
69              * to work around limitations in ancient versions of gcc.
70              */
71             { // union
72                 { // struct
73                     !h->keyframe,             // frame_type
74                     h->profile,               // version
75                     !h->invisible,            // show_frame
76                     h->segmentation.enabled ? // update_mb_segmentation_data
77                         h->segmentation.update_feature_data : 0,
78                 }
79             }
80         }
81     };
82
83     return 0;
84 }
85
86 static int nvdec_vp8_frame_params(AVCodecContext *avctx,
87                                   AVBufferRef *hw_frames_ctx)
88 {
89     // VP8 uses a fixed size pool of 3 possible reference frames
90     return ff_nvdec_frame_params(avctx, hw_frames_ctx, 3);
91 }
92
93 AVHWAccel ff_vp8_nvdec_hwaccel = {
94     .name                 = "vp8_nvdec",
95     .type                 = AVMEDIA_TYPE_VIDEO,
96     .id                   = AV_CODEC_ID_VP8,
97     .pix_fmt              = AV_PIX_FMT_CUDA,
98     .start_frame          = nvdec_vp8_start_frame,
99     .end_frame            = ff_nvdec_simple_end_frame,
100     .decode_slice         = ff_nvdec_simple_decode_slice,
101     .frame_params         = nvdec_vp8_frame_params,
102     .init                 = ff_nvdec_decode_init,
103     .uninit               = ff_nvdec_decode_uninit,
104     .priv_data_size       = sizeof(NVDECContext),
105 };