git.sesse.net Git - ffmpeg/blob - 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
  25 #include "hwaccel.h"
  26 #include "vaapi_decode.h"
  27 #include "vp9shared.h"
  28
  29 static VASurfaceID vaapi_vp9_surface_id(const VP9Frame *vf)
  30 {
  31     if (vf)
  32         return ff_vaapi_get_surface_id(vf->tf.f);
  33     else
  34         return VA_INVALID_SURFACE;
  35 }
  36
  37 static int vaapi_vp9_start_frame(AVCodecContext          *avctx,
  38                                  av_unused const uint8_t *buffer,
  39                                  av_unused uint32_t       size)
  40 {
  41     const VP9SharedContext *h = avctx->priv_data;
  42     VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
  43     VADecPictureParameterBufferVP9 pic_param;
  44     const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
  45     int err, i;
  46
  47     pic->output_surface = vaapi_vp9_surface_id(&h->frames[CUR_FRAME]);
  48
  49     pic_param = (VADecPictureParameterBufferVP9) {
  50         .frame_width                      = avctx->width,
  51         .frame_height                     = avctx->height,
  52
  53         .pic_fields.bits = {
  54             .subsampling_x                = pixdesc->log2_chroma_w,
  55             .subsampling_y                = pixdesc->log2_chroma_h,
  56             .frame_type                   = !h->h.keyframe,
  57             .show_frame                   = !h->h.invisible,
  58             .error_resilient_mode         = h->h.errorres,
  59             .intra_only                   = h->h.intraonly,
  60             .allow_high_precision_mv      = h->h.keyframe ? 0 : h->h.highprecisionmvs,
  61             .mcomp_filter_type            = h->h.filtermode ^ (h->h.filtermode <= 1),
  62             .frame_parallel_decoding_mode = h->h.parallelmode,
  63             .reset_frame_context          = h->h.resetctx,
  64             .refresh_frame_context        = h->h.refreshctx,
  65             .frame_context_idx            = h->h.framectxid,
  66
  67             .segmentation_enabled          = h->h.segmentation.enabled,
  68             .segmentation_temporal_update  = h->h.segmentation.temporal,
  69             .segmentation_update_map       = h->h.segmentation.update_map,
  70
  71             .last_ref_frame                = h->h.refidx[0],
  72             .last_ref_frame_sign_bias      = h->h.signbias[0],
  73             .golden_ref_frame              = h->h.refidx[1],
  74             .golden_ref_frame_sign_bias    = h->h.signbias[1],
  75             .alt_ref_frame                 = h->h.refidx[2],
  76             .alt_ref_frame_sign_bias       = h->h.signbias[2],
  77             .lossless_flag                 = h->h.lossless,
  78         },
  79
  80         .filter_level                      = h->h.filter.level,
  81         .sharpness_level                   = h->h.filter.sharpness,
  82         .log2_tile_rows                    = h->h.tiling.log2_tile_rows,
  83         .log2_tile_columns                 = h->h.tiling.log2_tile_cols,
  84
  85         .frame_header_length_in_bytes      = h->h.uncompressed_header_size,
  86         .first_partition_size              = h->h.compressed_header_size,
  87
  88         .profile                           = h->h.profile,
  89         .bit_depth                         = h->h.bpp,
  90     };
  91
  92     for (i = 0; i < 7; i++)
  93         pic_param.mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
  94
  95     if (h->h.segmentation.temporal) {
  96         for (i = 0; i < 3; i++)
  97             pic_param.segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
  98     } else {
  99         memset(pic_param.segment_pred_probs, 255, sizeof(pic_param.segment_pred_probs));
 100     }
 101
 102     for (i = 0; i < 8; i++) {
 103         if (h->refs[i].f->buf[0])
 104             pic_param.reference_frames[i] = ff_vaapi_get_surface_id(h->refs[i].f);
 105         else
 106             pic_param.reference_frames[i] = VA_INVALID_ID;
 107     }
 108
 109     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 110                                             VAPictureParameterBufferType,
 111                                             &pic_param, sizeof(pic_param));
 112     if (err < 0) {
 113         ff_vaapi_decode_cancel(avctx, pic);
 114         return err;
 115     }
 116
 117     return 0;
 118 }
 119
 120 static int vaapi_vp9_end_frame(AVCodecContext *avctx)
 121 {
 122     const VP9SharedContext *h = avctx->priv_data;
 123     VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
 124
 125     return ff_vaapi_decode_issue(avctx, pic);
 126 }
 127
 128 static int vaapi_vp9_decode_slice(AVCodecContext *avctx,
 129                                   const uint8_t  *buffer,
 130                                   uint32_t        size)
 131 {
 132     const VP9SharedContext *h = avctx->priv_data;
 133     VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
 134     VASliceParameterBufferVP9 slice_param;
 135     int err, i;
 136
 137     slice_param = (VASliceParameterBufferVP9) {
 138         .slice_data_size   = size,
 139         .slice_data_offset = 0,
 140         .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
 141     };
 142
 143     for (i = 0; i < 8; i++) {
 144         slice_param.seg_param[i] = (VASegmentParameterVP9) {
 145             .segment_flags.fields = {
 146                 .segment_reference_enabled = h->h.segmentation.feat[i].ref_enabled,
 147                 .segment_reference         = h->h.segmentation.feat[i].ref_val,
 148                 .segment_reference_skipped = h->h.segmentation.feat[i].skip_enabled,
 149             },
 150
 151             .luma_dc_quant_scale           = h->h.segmentation.feat[i].qmul[0][0],
 152             .luma_ac_quant_scale           = h->h.segmentation.feat[i].qmul[0][1],
 153             .chroma_dc_quant_scale         = h->h.segmentation.feat[i].qmul[1][0],
 154             .chroma_ac_quant_scale         = h->h.segmentation.feat[i].qmul[1][1],
 155         };
 156
 157         memcpy(slice_param.seg_param[i].filter_level, h->h.segmentation.feat[i].lflvl, sizeof(slice_param.seg_param[i].filter_level));
 158     }
 159
 160     err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
 161                                             &slice_param, sizeof(slice_param),
 162                                             buffer, size);
 163     if (err) {
 164         ff_vaapi_decode_cancel(avctx, pic);
 165         return err;
 166     }
 167
 168     return 0;
 169 }
 170
 171 AVHWAccel ff_vp9_vaapi_hwaccel = {
 172     .name                 = "vp9_vaapi",
 173     .type                 = AVMEDIA_TYPE_VIDEO,
 174     .id                   = AV_CODEC_ID_VP9,
 175     .pix_fmt              = AV_PIX_FMT_VAAPI,
 176     .start_frame          = vaapi_vp9_start_frame,
 177     .end_frame            = vaapi_vp9_end_frame,
 178     .decode_slice         = vaapi_vp9_decode_slice,
 179     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 180     .init                 = ff_vaapi_decode_init,
 181     .uninit               = ff_vaapi_decode_uninit,
 182     .frame_params         = ff_vaapi_common_frame_params,
 183     .priv_data_size       = sizeof(VAAPIDecodeContext),
 184     .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
 185 };