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   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * Libav is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <va/va.h>
  20 #include <va/va_dec_vp8.h>
  21
  22 #include "vaapi_decode.h"
  23 #include "vp8.h"
  24
  25 static VASurfaceID vaapi_vp8_surface_id(VP8Frame *vf)
  26 {
  27     if (vf)
  28         return ff_vaapi_get_surface_id(vf->tf.f);
  29     else
  30         return VA_INVALID_SURFACE;
  31 }
  32
  33 static int vaapi_vp8_start_frame(AVCodecContext          *avctx,
  34                                  av_unused const uint8_t *buffer,
  35                                  av_unused uint32_t       size)
  36 {
  37     const VP8Context *s = avctx->priv_data;
  38     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
  39     VAPictureParameterBufferVP8 pp;
  40     VAProbabilityDataBufferVP8 prob;
  41     VAIQMatrixBufferVP8 quant;
  42     int err, i, j, k;
  43
  44     pic->output_surface = vaapi_vp8_surface_id(s->framep[VP56_FRAME_CURRENT]);
  45
  46     pp = (VAPictureParameterBufferVP8) {
  47         .frame_width                     = avctx->width,
  48         .frame_height                    = avctx->height,
  49
  50         .last_ref_frame                  = vaapi_vp8_surface_id(s->framep[VP56_FRAME_PREVIOUS]),
  51         .golden_ref_frame                = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN]),
  52         .alt_ref_frame                   = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN2]),
  53         .out_of_loop_frame               = VA_INVALID_SURFACE,
  54
  55         .pic_fields.bits = {
  56             .key_frame                   = !s->keyframe,
  57             .version                     = s->profile,
  58
  59             .segmentation_enabled        = s->segmentation.enabled,
  60             .update_mb_segmentation_map  = s->segmentation.update_map,
  61             .update_segment_feature_data = s->segmentation.update_feature_data,
  62
  63             .filter_type                 = s->filter.simple,
  64             .sharpness_level             = s->filter.sharpness,
  65
  66             .loop_filter_adj_enable      = s->lf_delta.enabled,
  67             .mode_ref_lf_delta_update    = s->lf_delta.update,
  68
  69             .sign_bias_golden            = s->sign_bias[VP56_FRAME_GOLDEN],
  70             .sign_bias_alternate         = s->sign_bias[VP56_FRAME_GOLDEN2],
  71
  72             .mb_no_coeff_skip            = s->mbskip_enabled,
  73             .loop_filter_disable         = s->filter.level == 0,
  74         },
  75
  76         .prob_skip_false                 = s->prob->mbskip,
  77         .prob_intra                      = s->prob->intra,
  78         .prob_last                       = s->prob->last,
  79         .prob_gf                         = s->prob->golden,
  80     };
  81
  82     for (i = 0; i < 3; i++)
  83         pp.mb_segment_tree_probs[i] = s->prob->segmentid[i];
  84
  85     for (i = 0; i < 4; i++) {
  86         if (s->segmentation.enabled) {
  87             pp.loop_filter_level[i] = s->segmentation.filter_level[i];
  88             if (!s->segmentation.absolute_vals)
  89                 pp.loop_filter_level[i] += s->filter.level;
  90         } else {
  91             pp.loop_filter_level[i] = s->filter.level;
  92         }
  93         pp.loop_filter_level[i] = av_clip_uintp2(pp.loop_filter_level[i], 6);
  94     }
  95
  96     for (i = 0; i < 4; i++) {
  97         pp.loop_filter_deltas_ref_frame[i] = s->lf_delta.ref[i];
  98         pp.loop_filter_deltas_mode[i] = s->lf_delta.mode[i + 4];
  99     }
 100
 101     if (s->keyframe) {
 102         static const uint8_t keyframe_y_mode_probs[4] = {
 103             145, 156, 163, 128
 104         };
 105         static const uint8_t keyframe_uv_mode_probs[3] = {
 106             142, 114, 183
 107         };
 108         memcpy(pp.y_mode_probs,  keyframe_y_mode_probs,  4);
 109         memcpy(pp.uv_mode_probs, keyframe_uv_mode_probs, 3);
 110     } else {
 111         for (i = 0; i < 4; i++)
 112             pp.y_mode_probs[i] = s->prob->pred16x16[i];
 113         for (i = 0; i < 3; i++)
 114             pp.uv_mode_probs[i] = s->prob->pred8x8c[i];
 115     }
 116     for (i = 0; i < 2; i++)
 117         for (j = 0; j < 19; j++)
 118             pp.mv_probs[i][j] = s->prob->mvc[i][j];
 119
 120     pp.bool_coder_ctx.range = s->coder_state_at_header_end.range;
 121     pp.bool_coder_ctx.value = s->coder_state_at_header_end.value;
 122     pp.bool_coder_ctx.count = s->coder_state_at_header_end.bit_count;
 123
 124     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 125                                             VAPictureParameterBufferType,
 126                                             &pp, sizeof(pp));
 127     if (err < 0)
 128         goto fail;
 129
 130     for (i = 0; i < 4; i++) {
 131         for (j = 0; j < 8; j++) {
 132             static const int coeff_bands_inverse[8] = {
 133                 0, 1, 2, 3, 5, 6, 4, 15
 134             };
 135             int coeff_pos = coeff_bands_inverse[j];
 136
 137             for (k = 0; k < 3; k++) {
 138                 memcpy(prob.dct_coeff_probs[i][j][k],
 139                        s->prob->token[i][coeff_pos][k], 11);
 140             }
 141         }
 142     }
 143
 144     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 145                                             VAProbabilityBufferType,
 146                                             &prob, sizeof(prob));
 147     if (err < 0)
 148         goto fail;
 149
 150     for (i = 0; i < 4; i++) {
 151         int base_qi = s->segmentation.base_quant[i];
 152         if (!s->segmentation.absolute_vals)
 153             base_qi += s->quant.yac_qi;
 154
 155         quant.quantization_index[i][0] = av_clip_uintp2(base_qi,                       7);
 156         quant.quantization_index[i][1] = av_clip_uintp2(base_qi + s->quant.ydc_delta,  7);
 157         quant.quantization_index[i][2] = av_clip_uintp2(base_qi + s->quant.y2dc_delta, 7);
 158         quant.quantization_index[i][3] = av_clip_uintp2(base_qi + s->quant.y2ac_delta, 7);
 159         quant.quantization_index[i][4] = av_clip_uintp2(base_qi + s->quant.uvdc_delta, 7);
 160         quant.quantization_index[i][5] = av_clip_uintp2(base_qi + s->quant.uvac_delta, 7);
 161     }
 162
 163     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 164                                             VAIQMatrixBufferType,
 165                                             &quant, sizeof(quant));
 166     if (err < 0)
 167         goto fail;
 168
 169     return 0;
 170
 171 fail:
 172     ff_vaapi_decode_cancel(avctx, pic);
 173     return err;
 174 }
 175
 176 static int vaapi_vp8_end_frame(AVCodecContext *avctx)
 177 {
 178     const VP8Context *s = avctx->priv_data;
 179     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
 180
 181     return ff_vaapi_decode_issue(avctx, pic);
 182 }
 183
 184 static int vaapi_vp8_decode_slice(AVCodecContext *avctx,
 185                                   const uint8_t  *buffer,
 186                                   uint32_t        size)
 187 {
 188     const VP8Context *s = avctx->priv_data;
 189     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
 190     VASliceParameterBufferVP8 sp;
 191     int err, i;
 192
 193     unsigned int header_size = 3 + 7 * s->keyframe;
 194     const uint8_t *data = buffer + header_size;
 195     unsigned int data_size = size - header_size;
 196
 197     sp = (VASliceParameterBufferVP8) {
 198         .slice_data_size   = data_size,
 199         .slice_data_offset = 0,
 200         .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
 201
 202         .macroblock_offset = (8 * (s->coder_state_at_header_end.input - data) -
 203                               s->coder_state_at_header_end.bit_count - 8),
 204         .num_of_partitions = s->num_coeff_partitions + 1,
 205     };
 206
 207     sp.partition_size[0] = s->header_partition_size - ((sp.macroblock_offset + 7) / 8);
 208     for (i = 0; i < 8; i++)
 209         sp.partition_size[i+1] = s->coeff_partition_size[i];
 210
 211     err = ff_vaapi_decode_make_slice_buffer(avctx, pic, &sp, sizeof(sp), data, data_size);
 212     if (err)
 213         goto fail;
 214
 215     return 0;
 216
 217 fail:
 218     ff_vaapi_decode_cancel(avctx, pic);
 219     return err;
 220 }
 221
 222 AVHWAccel ff_vp8_vaapi_hwaccel = {
 223     .name                 = "vp8_vaapi",
 224     .type                 = AVMEDIA_TYPE_VIDEO,
 225     .id                   = AV_CODEC_ID_VP8,
 226     .pix_fmt              = AV_PIX_FMT_VAAPI,
 227     .start_frame          = &vaapi_vp8_start_frame,
 228     .end_frame            = &vaapi_vp8_end_frame,
 229     .decode_slice         = &vaapi_vp8_decode_slice,
 230     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 231     .init                 = &ff_vaapi_decode_init,
 232     .uninit               = &ff_vaapi_decode_uninit,
 233     .priv_data_size       = sizeof(VAAPIDecodeContext),
 234 };