git.sesse.net Git - ffmpeg/blob - libavcodec/vaapi_vp8.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "hwconfig.h"
  23 #include "vaapi_decode.h"
  24 #include "vp8.h"
  25
  26 static VASurfaceID vaapi_vp8_surface_id(VP8Frame *vf)
  27 {
  28     if (vf)
  29         return ff_vaapi_get_surface_id(vf->tf.f);
  30     else
  31         return VA_INVALID_SURFACE;
  32 }
  33
  34 static int vaapi_vp8_start_frame(AVCodecContext          *avctx,
  35                                  av_unused const uint8_t *buffer,
  36                                  av_unused uint32_t       size)
  37 {
  38     const VP8Context *s = avctx->priv_data;
  39     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
  40     VAPictureParameterBufferVP8 pp;
  41     VAProbabilityDataBufferVP8 prob;
  42     VAIQMatrixBufferVP8 quant;
  43     int err, i, j, k;
  44
  45     pic->output_surface = vaapi_vp8_surface_id(s->framep[VP56_FRAME_CURRENT]);
  46
  47     pp = (VAPictureParameterBufferVP8) {
  48         .frame_width                     = avctx->width,
  49         .frame_height                    = avctx->height,
  50
  51         .last_ref_frame                  = vaapi_vp8_surface_id(s->framep[VP56_FRAME_PREVIOUS]),
  52         .golden_ref_frame                = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN]),
  53         .alt_ref_frame                   = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN2]),
  54         .out_of_loop_frame               = VA_INVALID_SURFACE,
  55
  56         .pic_fields.bits = {
  57             .key_frame                   = !s->keyframe,
  58             .version                     = s->profile,
  59
  60             .segmentation_enabled        = s->segmentation.enabled,
  61             .update_mb_segmentation_map  = s->segmentation.update_map,
  62             .update_segment_feature_data = s->segmentation.update_feature_data,
  63
  64             .filter_type                 = s->filter.simple,
  65             .sharpness_level             = s->filter.sharpness,
  66
  67             .loop_filter_adj_enable      = s->lf_delta.enabled,
  68             .mode_ref_lf_delta_update    = s->lf_delta.update,
  69
  70             .sign_bias_golden            = s->sign_bias[VP56_FRAME_GOLDEN],
  71             .sign_bias_alternate         = s->sign_bias[VP56_FRAME_GOLDEN2],
  72
  73             .mb_no_coeff_skip            = s->mbskip_enabled,
  74             .loop_filter_disable         = s->filter.level == 0,
  75         },
  76
  77         .prob_skip_false                 = s->prob->mbskip,
  78         .prob_intra                      = s->prob->intra,
  79         .prob_last                       = s->prob->last,
  80         .prob_gf                         = s->prob->golden,
  81     };
  82
  83     for (i = 0; i < 3; i++)
  84         pp.mb_segment_tree_probs[i] = s->prob->segmentid[i];
  85
  86     for (i = 0; i < 4; i++) {
  87         if (s->segmentation.enabled) {
  88             pp.loop_filter_level[i] = s->segmentation.filter_level[i];
  89             if (!s->segmentation.absolute_vals)
  90                 pp.loop_filter_level[i] += s->filter.level;
  91         } else {
  92             pp.loop_filter_level[i] = s->filter.level;
  93         }
  94         pp.loop_filter_level[i] = av_clip_uintp2(pp.loop_filter_level[i], 6);
  95     }
  96
  97     for (i = 0; i < 4; i++) {
  98         pp.loop_filter_deltas_ref_frame[i] = s->lf_delta.ref[i];
  99         pp.loop_filter_deltas_mode[i] = s->lf_delta.mode[i + 4];
 100     }
 101
 102     if (s->keyframe) {
 103         static const uint8_t keyframe_y_mode_probs[4] = {
 104             145, 156, 163, 128
 105         };
 106         static const uint8_t keyframe_uv_mode_probs[3] = {
 107             142, 114, 183
 108         };
 109         memcpy(pp.y_mode_probs,  keyframe_y_mode_probs,  4);
 110         memcpy(pp.uv_mode_probs, keyframe_uv_mode_probs, 3);
 111     } else {
 112         for (i = 0; i < 4; i++)
 113             pp.y_mode_probs[i] = s->prob->pred16x16[i];
 114         for (i = 0; i < 3; i++)
 115             pp.uv_mode_probs[i] = s->prob->pred8x8c[i];
 116     }
 117     for (i = 0; i < 2; i++)
 118         for (j = 0; j < 19; j++)
 119             pp.mv_probs[i][j] = s->prob->mvc[i][j];
 120
 121     pp.bool_coder_ctx.range = s->coder_state_at_header_end.range;
 122     pp.bool_coder_ctx.value = s->coder_state_at_header_end.value;
 123     pp.bool_coder_ctx.count = s->coder_state_at_header_end.bit_count;
 124
 125     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 126                                             VAPictureParameterBufferType,
 127                                             &pp, sizeof(pp));
 128     if (err < 0)
 129         goto fail;
 130
 131     for (i = 0; i < 4; i++) {
 132         for (j = 0; j < 8; j++) {
 133             static const int coeff_bands_inverse[8] = {
 134                 0, 1, 2, 3, 5, 6, 4, 15
 135             };
 136             int coeff_pos = coeff_bands_inverse[j];
 137
 138             for (k = 0; k < 3; k++) {
 139                 memcpy(prob.dct_coeff_probs[i][j][k],
 140                        s->prob->token[i][coeff_pos][k], 11);
 141             }
 142         }
 143     }
 144
 145     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 146                                             VAProbabilityBufferType,
 147                                             &prob, sizeof(prob));
 148     if (err < 0)
 149         goto fail;
 150
 151     for (i = 0; i < 4; i++) {
 152         int base_qi = s->segmentation.base_quant[i];
 153         if (!s->segmentation.absolute_vals)
 154             base_qi += s->quant.yac_qi;
 155
 156         quant.quantization_index[i][0] = av_clip_uintp2(base_qi,                       7);
 157         quant.quantization_index[i][1] = av_clip_uintp2(base_qi + s->quant.ydc_delta,  7);
 158         quant.quantization_index[i][2] = av_clip_uintp2(base_qi + s->quant.y2dc_delta, 7);
 159         quant.quantization_index[i][3] = av_clip_uintp2(base_qi + s->quant.y2ac_delta, 7);
 160         quant.quantization_index[i][4] = av_clip_uintp2(base_qi + s->quant.uvdc_delta, 7);
 161         quant.quantization_index[i][5] = av_clip_uintp2(base_qi + s->quant.uvac_delta, 7);
 162     }
 163
 164     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 165                                             VAIQMatrixBufferType,
 166                                             &quant, sizeof(quant));
 167     if (err < 0)
 168         goto fail;
 169
 170     return 0;
 171
 172 fail:
 173     ff_vaapi_decode_cancel(avctx, pic);
 174     return err;
 175 }
 176
 177 static int vaapi_vp8_end_frame(AVCodecContext *avctx)
 178 {
 179     const VP8Context *s = avctx->priv_data;
 180     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
 181
 182     return ff_vaapi_decode_issue(avctx, pic);
 183 }
 184
 185 static int vaapi_vp8_decode_slice(AVCodecContext *avctx,
 186                                   const uint8_t  *buffer,
 187                                   uint32_t        size)
 188 {
 189     const VP8Context *s = avctx->priv_data;
 190     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
 191     VASliceParameterBufferVP8 sp;
 192     int err, i;
 193
 194     unsigned int header_size = 3 + 7 * s->keyframe;
 195     const uint8_t *data = buffer + header_size;
 196     unsigned int data_size = size - header_size;
 197
 198     sp = (VASliceParameterBufferVP8) {
 199         .slice_data_size   = data_size,
 200         .slice_data_offset = 0,
 201         .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
 202
 203         .macroblock_offset = (8 * (s->coder_state_at_header_end.input - data) -
 204                               s->coder_state_at_header_end.bit_count - 8),
 205         .num_of_partitions = s->num_coeff_partitions + 1,
 206     };
 207
 208     sp.partition_size[0] = s->header_partition_size - ((sp.macroblock_offset + 7) / 8);
 209     for (i = 0; i < 8; i++)
 210         sp.partition_size[i+1] = s->coeff_partition_size[i];
 211
 212     err = ff_vaapi_decode_make_slice_buffer(avctx, pic, &sp, sizeof(sp), data, data_size);
 213     if (err)
 214         goto fail;
 215
 216     return 0;
 217
 218 fail:
 219     ff_vaapi_decode_cancel(avctx, pic);
 220     return err;
 221 }
 222
 223 const AVHWAccel ff_vp8_vaapi_hwaccel = {
 224     .name                 = "vp8_vaapi",
 225     .type                 = AVMEDIA_TYPE_VIDEO,
 226     .id                   = AV_CODEC_ID_VP8,
 227     .pix_fmt              = AV_PIX_FMT_VAAPI,
 228     .start_frame          = &vaapi_vp8_start_frame,
 229     .end_frame            = &vaapi_vp8_end_frame,
 230     .decode_slice         = &vaapi_vp8_decode_slice,
 231     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 232     .init                 = &ff_vaapi_decode_init,
 233     .uninit               = &ff_vaapi_decode_uninit,
 234     .frame_params         = &ff_vaapi_common_frame_params,
 235     .priv_data_size       = sizeof(VAAPIDecodeContext),
 236     .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
 237 };