a656ffb13c7d2eb81937b5f1045519eefc5ec769
[ffmpeg.git] / libavcodec / vaapi_vp9.c
1 /*
2  * VP9 HW decode acceleration through VA API
3  *
4  * Copyright (C) 2015 Timo Rothenpieler <timo@rothenpieler.org>
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 "libavutil/pixdesc.h"
24 #include "vaapi_decode.h"
25 #include "vp9.h"
26
27 static VASurfaceID vaapi_vp9_surface_id(const VP9Frame *vf)
28 {
29     if (vf)
30         return ff_vaapi_get_surface_id(vf->tf.f);
31     else
32         return VA_INVALID_SURFACE;
33 }
34
35 static int vaapi_vp9_start_frame(AVCodecContext          *avctx,
36                                  av_unused const uint8_t *buffer,
37                                  av_unused uint32_t       size)
38 {
39     const VP9SharedContext *h = avctx->priv_data;
40     VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
41     VADecPictureParameterBufferVP9 pic_param;
42     const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
43     int err, i;
44
45     pic->output_surface = vaapi_vp9_surface_id(&h->frames[CUR_FRAME]);
46
47     pic_param = (VADecPictureParameterBufferVP9) {
48         .frame_width                      = avctx->width,
49         .frame_height                     = avctx->height,
50
51         .pic_fields.bits = {
52             .subsampling_x                = pixdesc->log2_chroma_w,
53             .subsampling_y                = pixdesc->log2_chroma_h,
54             .frame_type                   = !h->h.keyframe,
55             .show_frame                   = !h->h.invisible,
56             .error_resilient_mode         = h->h.errorres,
57             .intra_only                   = h->h.intraonly,
58             .allow_high_precision_mv      = h->h.keyframe ? 0 : h->h.highprecisionmvs,
59             .mcomp_filter_type            = h->h.filtermode ^ (h->h.filtermode <= 1),
60             .frame_parallel_decoding_mode = h->h.parallelmode,
61             .reset_frame_context          = h->h.resetctx,
62             .refresh_frame_context        = h->h.refreshctx,
63             .frame_context_idx            = h->h.framectxid,
64
65             .segmentation_enabled          = h->h.segmentation.enabled,
66             .segmentation_temporal_update  = h->h.segmentation.temporal,
67             .segmentation_update_map       = h->h.segmentation.update_map,
68
69             .last_ref_frame                = h->h.refidx[0],
70             .last_ref_frame_sign_bias      = h->h.signbias[0],
71             .golden_ref_frame              = h->h.refidx[1],
72             .golden_ref_frame_sign_bias    = h->h.signbias[1],
73             .alt_ref_frame                 = h->h.refidx[2],
74             .alt_ref_frame_sign_bias       = h->h.signbias[2],
75             .lossless_flag                 = h->h.lossless,
76         },
77
78         .filter_level                      = h->h.filter.level,
79         .sharpness_level                   = h->h.filter.sharpness,
80         .log2_tile_rows                    = h->h.tiling.log2_tile_rows,
81         .log2_tile_columns                 = h->h.tiling.log2_tile_cols,
82
83         .frame_header_length_in_bytes      = h->h.uncompressed_header_size,
84         .first_partition_size              = h->h.compressed_header_size,
85
86         .profile                           = h->h.profile,
87         .bit_depth                         = h->h.bpp,
88     };
89
90     for (i = 0; i < 7; i++)
91         pic_param.mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
92
93     if (h->h.segmentation.temporal) {
94         for (i = 0; i < 3; i++)
95             pic_param.segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
96     } else {
97         memset(pic_param.segment_pred_probs, 255, sizeof(pic_param.segment_pred_probs));
98     }
99
100     for (i = 0; i < 8; i++) {
101         if (h->refs[i].f->buf[0])
102             pic_param.reference_frames[i] = ff_vaapi_get_surface_id(h->refs[i].f);
103         else
104             pic_param.reference_frames[i] = VA_INVALID_ID;
105     }
106
107     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
108                                             VAPictureParameterBufferType,
109                                             &pic_param, sizeof(pic_param));
110     if (err < 0) {
111         ff_vaapi_decode_cancel(avctx, pic);
112         return err;
113     }
114
115     return 0;
116 }
117
118 static int vaapi_vp9_end_frame(AVCodecContext *avctx)
119 {
120     const VP9SharedContext *h = avctx->priv_data;
121     VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
122
123     return ff_vaapi_decode_issue(avctx, pic);
124 }
125
126 static int vaapi_vp9_decode_slice(AVCodecContext *avctx,
127                                   const uint8_t  *buffer,
128                                   uint32_t        size)
129 {
130     const VP9SharedContext *h = avctx->priv_data;
131     VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
132     VASliceParameterBufferVP9 slice_param;
133     int err, i;
134
135     slice_param = (VASliceParameterBufferVP9) {
136         .slice_data_size   = size,
137         .slice_data_offset = 0,
138         .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
139     };
140
141     for (i = 0; i < 8; i++) {
142         slice_param.seg_param[i] = (VASegmentParameterVP9) {
143             .segment_flags.fields = {
144                 .segment_reference_enabled = h->h.segmentation.feat[i].ref_enabled,
145                 .segment_reference         = h->h.segmentation.feat[i].ref_val,
146                 .segment_reference_skipped = h->h.segmentation.feat[i].skip_enabled,
147             },
148
149             .luma_dc_quant_scale           = h->h.segmentation.feat[i].qmul[0][0],
150             .luma_ac_quant_scale           = h->h.segmentation.feat[i].qmul[0][1],
151             .chroma_dc_quant_scale         = h->h.segmentation.feat[i].qmul[1][0],
152             .chroma_ac_quant_scale         = h->h.segmentation.feat[i].qmul[1][1],
153         };
154
155         memcpy(slice_param.seg_param[i].filter_level, h->h.segmentation.feat[i].lflvl, sizeof(slice_param.seg_param[i].filter_level));
156     }
157
158     err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
159                                             &slice_param, sizeof(slice_param),
160                                             buffer, size);
161     if (err) {
162         ff_vaapi_decode_cancel(avctx, pic);
163         return err;
164     }
165
166     return 0;
167 }
168
169 AVHWAccel ff_vp9_vaapi_hwaccel = {
170     .name                 = "vp9_vaapi",
171     .type                 = AVMEDIA_TYPE_VIDEO,
172     .id                   = AV_CODEC_ID_VP9,
173     .pix_fmt              = AV_PIX_FMT_VAAPI,
174     .start_frame          = vaapi_vp9_start_frame,
175     .end_frame            = vaapi_vp9_end_frame,
176     .decode_slice         = vaapi_vp9_decode_slice,
177     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
178     .init                 = ff_vaapi_decode_init,
179     .uninit               = ff_vaapi_decode_uninit,
180     .priv_data_size       = sizeof(VAAPIDecodeContext),
181 };