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 #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 };