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_internal.h"
  25 #include "vp9.h"
  26
  27 static void fill_picture_parameters(AVCodecContext                 *avctx,
  28                                     const VP9SharedContext         *h,
  29                                     VADecPictureParameterBufferVP9 *pp)
  30 {
  31     const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
  32     int i;
  33
  34     pp->frame_width = avctx->width;
  35     pp->frame_height = avctx->height;
  36
  37     pp->frame_header_length_in_bytes = h->h.uncompressed_header_size;
  38     pp->first_partition_size = h->h.compressed_header_size;
  39
  40     pp->profile = h->h.profile;
  41
  42     pp->filter_level = h->h.filter.level;
  43     pp->sharpness_level = h->h.filter.sharpness;
  44     pp->log2_tile_rows = h->h.tiling.log2_tile_rows;
  45     pp->log2_tile_columns = h->h.tiling.log2_tile_cols;
  46
  47     pp->pic_fields.bits.subsampling_x = pixdesc->log2_chroma_w;
  48     pp->pic_fields.bits.subsampling_y = pixdesc->log2_chroma_h;
  49     pp->pic_fields.bits.frame_type = !h->h.keyframe;
  50     pp->pic_fields.bits.show_frame = !h->h.invisible;
  51     pp->pic_fields.bits.error_resilient_mode = h->h.errorres;
  52     pp->pic_fields.bits.intra_only = h->h.intraonly;
  53     pp->pic_fields.bits.allow_high_precision_mv = h->h.keyframe ? 0 : h->h.highprecisionmvs;
  54     pp->pic_fields.bits.mcomp_filter_type = h->h.filtermode ^ (h->h.filtermode <= 1);
  55     pp->pic_fields.bits.frame_parallel_decoding_mode = h->h.parallelmode;
  56     pp->pic_fields.bits.reset_frame_context = h->h.resetctx;
  57     pp->pic_fields.bits.refresh_frame_context = h->h.refreshctx;
  58     pp->pic_fields.bits.frame_context_idx = h->h.framectxid;
  59
  60     pp->pic_fields.bits.segmentation_enabled = h->h.segmentation.enabled;
  61     pp->pic_fields.bits.segmentation_temporal_update = h->h.segmentation.temporal;
  62     pp->pic_fields.bits.segmentation_update_map = h->h.segmentation.update_map;
  63
  64     pp->pic_fields.bits.last_ref_frame = h->h.refidx[0];
  65     pp->pic_fields.bits.last_ref_frame_sign_bias = h->h.signbias[0];
  66     pp->pic_fields.bits.golden_ref_frame = h->h.refidx[1];
  67     pp->pic_fields.bits.golden_ref_frame_sign_bias = h->h.signbias[1];
  68     pp->pic_fields.bits.alt_ref_frame = h->h.refidx[2];
  69     pp->pic_fields.bits.alt_ref_frame_sign_bias = h->h.signbias[2];
  70     pp->pic_fields.bits.lossless_flag = h->h.lossless;
  71
  72     for (i = 0; i < 7; i++)
  73         pp->mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
  74
  75     if (h->h.segmentation.temporal) {
  76         for (i = 0; i < 3; i++)
  77             pp->segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
  78     } else {
  79         memset(pp->segment_pred_probs, 255, sizeof(pp->segment_pred_probs));
  80     }
  81
  82     for (i = 0; i < 8; i++) {
  83         if (h->refs[i].f->buf[0]) {
  84             pp->reference_frames[i] = ff_vaapi_get_surface_id(h->refs[i].f);
  85         } else {
  86             pp->reference_frames[i] = VA_INVALID_ID;
  87         }
  88     }
  89 }
  90
  91 static int vaapi_vp9_start_frame(AVCodecContext          *avctx,
  92                                  av_unused const uint8_t *buffer,
  93                                  av_unused uint32_t       size)
  94 {
  95     const VP9SharedContext *h = avctx->priv_data;
  96     FFVAContext * const vactx = ff_vaapi_get_context(avctx);
  97     VADecPictureParameterBufferVP9 *pic_param;
  98
  99     vactx->slice_param_size = sizeof(VASliceParameterBufferVP9);
 100
 101     pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VADecPictureParameterBufferVP9));
 102     if (!pic_param)
 103         return -1;
 104     fill_picture_parameters(avctx, h, pic_param);
 105
 106     return 0;
 107 }
 108
 109 static int vaapi_vp9_end_frame(AVCodecContext *avctx)
 110 {
 111     FFVAContext * const vactx = ff_vaapi_get_context(avctx);
 112     const VP9SharedContext *h = avctx->priv_data;
 113     int ret;
 114
 115     ret = ff_vaapi_commit_slices(vactx);
 116     if (ret < 0)
 117         goto finish;
 118
 119     ret = ff_vaapi_render_picture(vactx, ff_vaapi_get_surface_id(h->frames[CUR_FRAME].tf.f));
 120     if (ret < 0)
 121         goto finish;
 122
 123 finish:
 124     ff_vaapi_common_end_frame(avctx);
 125     return ret;
 126 }
 127
 128 static int vaapi_vp9_decode_slice(AVCodecContext *avctx,
 129                                   const uint8_t  *buffer,
 130                                   uint32_t        size)
 131 {
 132     FFVAContext * const vactx = ff_vaapi_get_context(avctx);
 133     const VP9SharedContext *h = avctx->priv_data;
 134     VASliceParameterBufferVP9 *slice_param;
 135     int i;
 136
 137     slice_param = (VASliceParameterBufferVP9*)ff_vaapi_alloc_slice(vactx, buffer, size);
 138     if (!slice_param)
 139         return -1;
 140
 141     for (i = 0; i < 8; i++) {
 142         slice_param->seg_param[i].segment_flags.fields.segment_reference_enabled = h->h.segmentation.feat[i].ref_enabled;
 143         slice_param->seg_param[i].segment_flags.fields.segment_reference = h->h.segmentation.feat[i].ref_val;
 144         slice_param->seg_param[i].segment_flags.fields.segment_reference_skipped = h->h.segmentation.feat[i].skip_enabled;
 145
 146         memcpy(slice_param->seg_param[i].filter_level, h->h.segmentation.feat[i].lflvl, sizeof(slice_param->seg_param[i].filter_level));
 147
 148         slice_param->seg_param[i].luma_dc_quant_scale = h->h.segmentation.feat[i].qmul[0][0];
 149         slice_param->seg_param[i].luma_ac_quant_scale = h->h.segmentation.feat[i].qmul[0][1];
 150         slice_param->seg_param[i].chroma_dc_quant_scale = h->h.segmentation.feat[i].qmul[1][0];
 151         slice_param->seg_param[i].chroma_ac_quant_scale = h->h.segmentation.feat[i].qmul[1][1];
 152     }
 153
 154     return 0;
 155 }
 156
 157 AVHWAccel ff_vp9_vaapi_hwaccel = {
 158     .name                 = "vp9_vaapi",
 159     .type                 = AVMEDIA_TYPE_VIDEO,
 160     .id                   = AV_CODEC_ID_VP9,
 161     .pix_fmt              = AV_PIX_FMT_VAAPI,
 162     .start_frame          = vaapi_vp9_start_frame,
 163     .end_frame            = vaapi_vp9_end_frame,
 164     .decode_slice         = vaapi_vp9_decode_slice,
 165     .init                 = ff_vaapi_context_init,
 166     .uninit               = ff_vaapi_context_fini,
 167     .priv_data_size       = sizeof(FFVAContext),
 168 };