git.sesse.net Git - ffmpeg/blob - libavcodec/vaapi_encode_mpeg2.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_enc_mpeg2.h>
  21
  22 #include "libavutil/avassert.h"
  23
  24 #include "avcodec.h"
  25 #include "cbs.h"
  26 #include "cbs_mpeg2.h"
  27 #include "mpeg12.h"
  28 #include "vaapi_encode.h"
  29
  30 typedef struct VAAPIEncodeMPEG2Context {
  31     VAAPIEncodeContext common;
  32
  33     // User options.
  34     int profile;
  35     int level;
  36
  37     // Derived settings.
  38     int quant_i;
  39     int quant_p;
  40     int quant_b;
  41
  42     unsigned int bit_rate;
  43     unsigned int vbv_buffer_size;
  44
  45     AVRational frame_rate;
  46
  47     unsigned int f_code_horizontal;
  48     unsigned int f_code_vertical;
  49
  50     // Stream state.
  51     int64_t last_i_frame;
  52
  53     // Writer structures.
  54     MPEG2RawSequenceHeader sequence_header;
  55     MPEG2RawExtensionData  sequence_extension;
  56     MPEG2RawExtensionData  sequence_display_extension;
  57     MPEG2RawGroupOfPicturesHeader gop_header;
  58     MPEG2RawPictureHeader  picture_header;
  59     MPEG2RawExtensionData  picture_coding_extension;
  60
  61     CodedBitstreamContext *cbc;
  62     CodedBitstreamFragment current_fragment;
  63 } VAAPIEncodeMPEG2Context;
  64
  65
  66 static int vaapi_encode_mpeg2_write_fragment(AVCodecContext *avctx,
  67                                              char *data, size_t *data_len,
  68                                              CodedBitstreamFragment *frag)
  69 {
  70     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
  71     int err;
  72
  73     err = ff_cbs_write_fragment_data(priv->cbc, frag);
  74     if (err < 0) {
  75         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
  76         return err;
  77     }
  78
  79     if (*data_len < 8 * frag->data_size - frag->data_bit_padding) {
  80         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
  81                "%zu < %zu.\n", *data_len,
  82                8 * frag->data_size - frag->data_bit_padding);
  83         return AVERROR(ENOSPC);
  84     }
  85
  86     memcpy(data, frag->data, frag->data_size);
  87     *data_len = 8 * frag->data_size - frag->data_bit_padding;
  88
  89     return 0;
  90 }
  91
  92 static int vaapi_encode_mpeg2_add_header(AVCodecContext *avctx,
  93                                          CodedBitstreamFragment *frag,
  94                                          int type, void *header)
  95 {
  96     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
  97     int err;
  98
  99     err = ff_cbs_insert_unit_content(priv->cbc, frag, -1, type, header, NULL);
 100     if (err < 0) {
 101         av_log(avctx, AV_LOG_ERROR, "Failed to add header: "
 102                "type = %d.\n", type);
 103         return err;
 104     }
 105
 106     return 0;
 107 }
 108
 109 static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx,
 110                                                     char *data, size_t *data_len)
 111 {
 112     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 113     CodedBitstreamFragment  *frag = &priv->current_fragment;
 114     int err;
 115
 116     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_SEQUENCE_HEADER,
 117                                         &priv->sequence_header);
 118     if (err < 0)
 119         goto fail;
 120
 121     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 122                                         &priv->sequence_extension);
 123     if (err < 0)
 124         goto fail;
 125
 126     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 127                                         &priv->sequence_display_extension);
 128     if (err < 0)
 129         goto fail;
 130
 131     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_GROUP,
 132                                         &priv->gop_header);
 133     if (err < 0)
 134         goto fail;
 135
 136     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 137 fail:
 138     ff_cbs_fragment_reset(priv->cbc, frag);
 139     return 0;
 140 }
 141
 142 static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx,
 143                                                    VAAPIEncodePicture *pic,
 144                                                    char *data, size_t *data_len)
 145 {
 146     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 147     CodedBitstreamFragment  *frag = &priv->current_fragment;
 148     int err;
 149
 150     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_PICTURE,
 151                                         &priv->picture_header);
 152     if (err < 0)
 153         goto fail;
 154
 155     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 156                                         &priv->picture_coding_extension);
 157     if (err < 0)
 158         goto fail;
 159
 160     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 161 fail:
 162     ff_cbs_fragment_reset(priv->cbc, frag);
 163     return 0;
 164 }
 165
 166 static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)
 167 {
 168     VAAPIEncodeContext                 *ctx = avctx->priv_data;
 169     VAAPIEncodeMPEG2Context           *priv = avctx->priv_data;
 170     MPEG2RawSequenceHeader              *sh = &priv->sequence_header;
 171     MPEG2RawSequenceExtension           *se = &priv->sequence_extension.data.sequence;
 172     MPEG2RawSequenceDisplayExtension   *sde = &priv->sequence_display_extension.data.sequence_display;
 173     MPEG2RawGroupOfPicturesHeader     *goph = &priv->gop_header;
 174     MPEG2RawPictureHeader               *ph = &priv->picture_header;
 175     MPEG2RawPictureCodingExtension     *pce = &priv->picture_coding_extension.data.picture_coding;
 176     VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
 177     VAEncPictureParameterBufferMPEG2  *vpic = ctx->codec_picture_params;
 178     int code, ext_n, ext_d;
 179
 180     memset(sh,   0, sizeof(*sh));
 181     memset(se,   0, sizeof(*se));
 182     memset(sde,  0, sizeof(*sde));
 183     memset(goph, 0, sizeof(*goph));
 184     memset(ph,   0, sizeof(*ph));
 185     memset(pce,  0, sizeof(*pce));
 186
 187
 188     if (ctx->va_bit_rate > 0) {
 189         priv->bit_rate = (ctx->va_bit_rate + 399) / 400;
 190     } else {
 191         // Unknown (not a bitrate-targetting mode), so just use the
 192         // highest value.
 193         priv->bit_rate = 0x3fffffff;
 194     }
 195     if (avctx->rc_buffer_size > 0) {
 196         priv->vbv_buffer_size = (avctx->rc_buffer_size + (1 << 14) - 1) >> 14;
 197     } else {
 198         // Unknown, so guess a value from the bitrate.
 199         priv->vbv_buffer_size = priv->bit_rate >> 14;
 200     }
 201
 202     switch (avctx->level) {
 203     case 4: // High.
 204     case 6: // High 1440.
 205         priv->f_code_horizontal = 9;
 206         priv->f_code_vertical   = 5;
 207         break;
 208     case 8: // Main.
 209         priv->f_code_horizontal = 8;
 210         priv->f_code_vertical   = 5;
 211         break;
 212     case 10: // Low.
 213     default:
 214         priv->f_code_horizontal = 7;
 215         priv->f_code_vertical   = 4;
 216         break;
 217     }
 218
 219
 220     // Sequence header
 221
 222     sh->sequence_header_code = MPEG2_START_SEQUENCE_HEADER;
 223
 224     sh->horizontal_size_value = avctx->width  & 0xfff;
 225     sh->vertical_size_value   = avctx->height & 0xfff;
 226
 227     if (avctx->sample_aspect_ratio.num != 0 &&
 228         avctx->sample_aspect_ratio.den != 0) {
 229         AVRational dar = av_div_q(avctx->sample_aspect_ratio,
 230                                   (AVRational) { avctx->width, avctx->height });
 231
 232         if (av_cmp_q(avctx->sample_aspect_ratio, (AVRational) { 1, 1 }) == 0) {
 233             sh->aspect_ratio_information = 1;
 234         } else if (av_cmp_q(dar, (AVRational) { 3, 4 }) == 0) {
 235             sh->aspect_ratio_information = 2;
 236         } else if (av_cmp_q(dar, (AVRational) { 9, 16 }) == 0) {
 237             sh->aspect_ratio_information = 3;
 238         } else if (av_cmp_q(dar, (AVRational) { 100, 221 }) == 0) {
 239             sh->aspect_ratio_information = 4;
 240         } else {
 241             av_log(avctx, AV_LOG_WARNING, "Sample aspect ratio %d:%d is not "
 242                    "representable, signalling square pixels instead.\n",
 243                    avctx->sample_aspect_ratio.num,
 244                    avctx->sample_aspect_ratio.den);
 245             sh->aspect_ratio_information = 1;
 246         }
 247     } else {
 248         // Unknown - assume square pixels.
 249         sh->aspect_ratio_information = 1;
 250     }
 251
 252     if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
 253         priv->frame_rate = avctx->framerate;
 254     else
 255         priv->frame_rate = av_inv_q(avctx->time_base);
 256     ff_mpeg12_find_best_frame_rate(priv->frame_rate,
 257                                    &code, &ext_n, &ext_d, 0);
 258     sh->frame_rate_code = code;
 259
 260     sh->bit_rate_value        = priv->bit_rate & 0x3ffff;
 261     sh->vbv_buffer_size_value = priv->vbv_buffer_size & 0x3ff;
 262
 263     sh->constrained_parameters_flag     = 0;
 264     sh->load_intra_quantiser_matrix     = 0;
 265     sh->load_non_intra_quantiser_matrix = 0;
 266
 267
 268     // Sequence extension
 269
 270     priv->sequence_extension.extension_start_code = MPEG2_START_EXTENSION;
 271     priv->sequence_extension.extension_start_code_identifier =
 272         MPEG2_EXTENSION_SEQUENCE;
 273
 274     se->profile_and_level_indication = avctx->profile << 4 | avctx->level;
 275     se->progressive_sequence = 1;
 276     se->chroma_format        = 1;
 277
 278     se->horizontal_size_extension = avctx->width  >> 12;
 279     se->vertical_size_extension   = avctx->height >> 12;
 280
 281     se->bit_rate_extension        = priv->bit_rate >> 18;
 282     se->vbv_buffer_size_extension = priv->vbv_buffer_size >> 10;
 283     se->low_delay                 = ctx->b_per_p == 0;
 284
 285     se->frame_rate_extension_n = ext_n;
 286     se->frame_rate_extension_d = ext_d;
 287
 288
 289     // Sequence display extension
 290
 291     priv->sequence_display_extension.extension_start_code =
 292         MPEG2_START_EXTENSION;
 293     priv->sequence_display_extension.extension_start_code_identifier =
 294         MPEG2_EXTENSION_SEQUENCE_DISPLAY;
 295
 296     sde->video_format = 5;
 297     if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 298         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 299         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 300         sde->colour_description       = 1;
 301         sde->colour_primaries         = avctx->color_primaries;
 302         sde->transfer_characteristics = avctx->color_trc;
 303         sde->matrix_coefficients      = avctx->colorspace;
 304     } else {
 305         sde->colour_description = 0;
 306     }
 307
 308     sde->display_horizontal_size = avctx->width;
 309     sde->display_vertical_size   = avctx->height;
 310
 311
 312     // GOP header
 313
 314     goph->group_start_code = MPEG2_START_GROUP;
 315
 316     // Marker bit in the middle of time_code.
 317     goph->time_code   = 1 << 12;
 318     goph->closed_gop  = 1;
 319     goph->broken_link = 0;
 320
 321
 322     // Defaults for picture header
 323
 324     ph->picture_start_code = MPEG2_START_PICTURE;
 325
 326     ph->vbv_delay = 0xffff; // Not currently calculated.
 327
 328     ph->full_pel_forward_vector  = 0;
 329     ph->forward_f_code           = 7;
 330     ph->full_pel_backward_vector = 0;
 331     ph->forward_f_code           = 7;
 332
 333
 334     // Defaults for picture coding extension
 335
 336     priv->picture_coding_extension.extension_start_code =
 337         MPEG2_START_EXTENSION;
 338     priv->picture_coding_extension.extension_start_code_identifier =
 339         MPEG2_EXTENSION_PICTURE_CODING;
 340
 341     pce->intra_dc_precision         = 0;
 342     pce->picture_structure          = 3;
 343     pce->top_field_first            = 0;
 344     pce->frame_pred_frame_dct       = 1;
 345     pce->concealment_motion_vectors = 0;
 346     pce->q_scale_type               = 0;
 347     pce->intra_vlc_format           = 0;
 348     pce->alternate_scan             = 0;
 349     pce->repeat_first_field         = 0;
 350     pce->progressive_frame          = 1;
 351     pce->composite_display_flag     = 0;
 352
 353
 354
 355     *vseq = (VAEncSequenceParameterBufferMPEG2) {
 356         .intra_period = ctx->gop_size,
 357         .ip_period    = ctx->b_per_p + 1,
 358
 359         .picture_width  = avctx->width,
 360         .picture_height = avctx->height,
 361
 362         .bits_per_second          = ctx->va_bit_rate,
 363         .frame_rate               = av_q2d(priv->frame_rate),
 364         .aspect_ratio_information = sh->aspect_ratio_information,
 365         .vbv_buffer_size          = priv->vbv_buffer_size,
 366
 367         .sequence_extension.bits = {
 368             .profile_and_level_indication = se->profile_and_level_indication,
 369             .progressive_sequence         = se->progressive_sequence,
 370             .chroma_format                = se->chroma_format,
 371             .low_delay                    = se->low_delay,
 372             .frame_rate_extension_n       = se->frame_rate_extension_n,
 373             .frame_rate_extension_d       = se->frame_rate_extension_d,
 374         },
 375
 376         .new_gop_header = 1,
 377         .gop_header.bits = {
 378             .time_code   = goph->time_code,
 379             .closed_gop  = goph->closed_gop,
 380             .broken_link = goph->broken_link,
 381         },
 382     };
 383
 384     *vpic = (VAEncPictureParameterBufferMPEG2) {
 385         .forward_reference_picture  = VA_INVALID_ID,
 386         .backward_reference_picture = VA_INVALID_ID,
 387         .reconstructed_picture      = VA_INVALID_ID,
 388         .coded_buf                  = VA_INVALID_ID,
 389
 390         .vbv_delay = 0xffff,
 391         .f_code    = { { 15, 15 }, { 15, 15 } },
 392
 393         .picture_coding_extension.bits = {
 394             .intra_dc_precision         = pce->intra_dc_precision,
 395             .picture_structure          = pce->picture_structure,
 396             .top_field_first            = pce->top_field_first,
 397             .frame_pred_frame_dct       = pce->frame_pred_frame_dct,
 398             .concealment_motion_vectors = pce->concealment_motion_vectors,
 399             .q_scale_type               = pce->q_scale_type,
 400             .intra_vlc_format           = pce->intra_vlc_format,
 401             .alternate_scan             = pce->alternate_scan,
 402             .repeat_first_field         = pce->repeat_first_field,
 403             .progressive_frame          = pce->progressive_frame,
 404             .composite_display_flag     = pce->composite_display_flag,
 405         },
 406
 407         .composite_display.bits = {
 408             .v_axis            = pce->v_axis,
 409             .field_sequence    = pce->field_sequence,
 410             .sub_carrier       = pce->sub_carrier,
 411             .burst_amplitude   = pce->burst_amplitude,
 412             .sub_carrier_phase = pce->sub_carrier_phase,
 413         },
 414     };
 415
 416     return 0;
 417 }
 418
 419 static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx,
 420                                                  VAAPIEncodePicture *pic)
 421 {
 422     VAAPIEncodeMPEG2Context          *priv = avctx->priv_data;
 423     MPEG2RawPictureHeader              *ph = &priv->picture_header;
 424     MPEG2RawPictureCodingExtension    *pce = &priv->picture_coding_extension.data.picture_coding;
 425     VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;
 426
 427     if (pic->type == PICTURE_TYPE_IDR || pic->type == PICTURE_TYPE_I) {
 428         ph->temporal_reference  = 0;
 429         ph->picture_coding_type = 1;
 430         priv->last_i_frame = pic->display_order;
 431     } else {
 432         ph->temporal_reference = pic->display_order - priv->last_i_frame;
 433         ph->picture_coding_type = pic->type == PICTURE_TYPE_B ? 3 : 2;
 434     }
 435
 436     if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {
 437         pce->f_code[0][0] = priv->f_code_horizontal;
 438         pce->f_code[0][1] = priv->f_code_vertical;
 439     } else {
 440         pce->f_code[0][0] = 15;
 441         pce->f_code[0][1] = 15;
 442     }
 443     if (pic->type == PICTURE_TYPE_B) {
 444         pce->f_code[1][0] = priv->f_code_horizontal;
 445         pce->f_code[1][1] = priv->f_code_vertical;
 446     } else {
 447         pce->f_code[1][0] = 15;
 448         pce->f_code[1][1] = 15;
 449     }
 450
 451     vpic->reconstructed_picture = pic->recon_surface;
 452     vpic->coded_buf             = pic->output_buffer;
 453
 454     switch (pic->type) {
 455     case PICTURE_TYPE_IDR:
 456     case PICTURE_TYPE_I:
 457         vpic->picture_type = VAEncPictureTypeIntra;
 458         break;
 459     case PICTURE_TYPE_P:
 460         vpic->picture_type = VAEncPictureTypePredictive;
 461         vpic->forward_reference_picture = pic->refs[0]->recon_surface;
 462         break;
 463     case PICTURE_TYPE_B:
 464         vpic->picture_type = VAEncPictureTypeBidirectional;
 465         vpic->forward_reference_picture  = pic->refs[0]->recon_surface;
 466         vpic->backward_reference_picture = pic->refs[1]->recon_surface;
 467         break;
 468     default:
 469         av_assert0(0 && "invalid picture type");
 470     }
 471
 472     vpic->temporal_reference = ph->temporal_reference;
 473     vpic->f_code[0][0]       = pce->f_code[0][0];
 474     vpic->f_code[0][1]       = pce->f_code[0][1];
 475     vpic->f_code[1][0]       = pce->f_code[1][0];
 476     vpic->f_code[1][1]       = pce->f_code[1][1];
 477
 478     return 0;
 479 }
 480
 481 static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx,
 482                                                VAAPIEncodePicture *pic,
 483                                                VAAPIEncodeSlice *slice)
 484 {
 485     VAAPIEncodeMPEG2Context            *priv = avctx->priv_data;
 486     VAEncSliceParameterBufferMPEG2   *vslice = slice->codec_slice_params;
 487     int qp;
 488
 489     vslice->macroblock_address = slice->block_start;
 490     vslice->num_macroblocks    = slice->block_size;
 491
 492     switch (pic->type) {
 493     case PICTURE_TYPE_IDR:
 494     case PICTURE_TYPE_I:
 495         qp = priv->quant_i;
 496         break;
 497     case PICTURE_TYPE_P:
 498         qp = priv->quant_p;
 499         break;
 500     case PICTURE_TYPE_B:
 501         qp = priv->quant_b;
 502         break;
 503     default:
 504         av_assert0(0 && "invalid picture type");
 505     }
 506
 507     vslice->quantiser_scale_code = qp;
 508     vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||
 509                               pic->type == PICTURE_TYPE_I);
 510
 511     return 0;
 512 }
 513
 514 static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)
 515 {
 516     VAAPIEncodeContext       *ctx = avctx->priv_data;
 517     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 518     int err;
 519
 520     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_MPEG2VIDEO, avctx);
 521     if (err < 0)
 522         return err;
 523
 524     if (ctx->va_rc_mode == VA_RC_CQP) {
 525         priv->quant_p = av_clip(ctx->rc_quality, 1, 31);
 526         if (avctx->i_quant_factor > 0.0)
 527             priv->quant_i =
 528                 av_clip((avctx->i_quant_factor * priv->quant_p +
 529                          avctx->i_quant_offset) + 0.5, 1, 31);
 530         else
 531             priv->quant_i = priv->quant_p;
 532         if (avctx->b_quant_factor > 0.0)
 533             priv->quant_b =
 534                 av_clip((avctx->b_quant_factor * priv->quant_p +
 535                          avctx->b_quant_offset) + 0.5, 1, 31);
 536         else
 537             priv->quant_b = priv->quant_p;
 538
 539         av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "
 540                "%d / %d / %d for I- / P- / B-frames.\n",
 541                priv->quant_i, priv->quant_p, priv->quant_b);
 542
 543     } else {
 544         priv->quant_i = 16;
 545         priv->quant_p = 16;
 546         priv->quant_b = 16;
 547     }
 548
 549     ctx->slice_block_rows = FFALIGN(avctx->height, 16) / 16;
 550     ctx->slice_block_cols = FFALIGN(avctx->width,  16) / 16;
 551
 552     ctx->nb_slices  = ctx->slice_block_rows;
 553     ctx->slice_size = 1;
 554
 555     return 0;
 556 }
 557
 558 static const VAAPIEncodeProfile vaapi_encode_mpeg2_profiles[] = {
 559     { FF_PROFILE_MPEG2_MAIN,   8, 3, 1, 1, VAProfileMPEG2Main   },
 560     { FF_PROFILE_MPEG2_SIMPLE, 8, 3, 1, 1, VAProfileMPEG2Simple },
 561     { FF_PROFILE_UNKNOWN }
 562 };
 563
 564 static const VAAPIEncodeType vaapi_encode_type_mpeg2 = {
 565     .profiles              = vaapi_encode_mpeg2_profiles,
 566
 567     .flags                 = FLAG_B_PICTURES,
 568
 569     .configure             = &vaapi_encode_mpeg2_configure,
 570
 571     .default_quality       = 10,
 572
 573     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferMPEG2),
 574     .init_sequence_params  = &vaapi_encode_mpeg2_init_sequence_params,
 575
 576     .picture_params_size   = sizeof(VAEncPictureParameterBufferMPEG2),
 577     .init_picture_params   = &vaapi_encode_mpeg2_init_picture_params,
 578
 579     .slice_params_size     = sizeof(VAEncSliceParameterBufferMPEG2),
 580     .init_slice_params     = &vaapi_encode_mpeg2_init_slice_params,
 581
 582     .sequence_header_type  = VAEncPackedHeaderSequence,
 583     .write_sequence_header = &vaapi_encode_mpeg2_write_sequence_header,
 584
 585     .picture_header_type   = VAEncPackedHeaderPicture,
 586     .write_picture_header  = &vaapi_encode_mpeg2_write_picture_header,
 587 };
 588
 589 static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx)
 590 {
 591     VAAPIEncodeContext       *ctx = avctx->priv_data;
 592     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 593
 594     ctx->codec = &vaapi_encode_type_mpeg2;
 595
 596     if (avctx->profile == FF_PROFILE_UNKNOWN)
 597         avctx->profile = priv->profile;
 598     if (avctx->level == FF_LEVEL_UNKNOWN)
 599         avctx->level = priv->level;
 600
 601     // Reject unknown levels (these are required to set f_code for
 602     // motion vector encoding).
 603     switch (avctx->level) {
 604     case 4: // High
 605     case 6: // High 1440
 606     case 8: // Main
 607     case 10: // Low
 608         break;
 609     default:
 610         av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 level %d.\n",
 611                avctx->level);
 612         return AVERROR(EINVAL);
 613     }
 614
 615     if (avctx->height % 4096 == 0 || avctx->width % 4096 == 0) {
 616         av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support picture "
 617                "height or width divisible by 4096.\n");
 618         return AVERROR(EINVAL);
 619     }
 620
 621     ctx->desired_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE |
 622                                   VA_ENC_PACKED_HEADER_PICTURE;
 623
 624     ctx->surface_width  = FFALIGN(avctx->width,  16);
 625     ctx->surface_height = FFALIGN(avctx->height, 16);
 626
 627     return ff_vaapi_encode_init(avctx);
 628 }
 629
 630 static av_cold int vaapi_encode_mpeg2_close(AVCodecContext *avctx)
 631 {
 632     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 633
 634     ff_cbs_fragment_free(priv->cbc, &priv->current_fragment);
 635     ff_cbs_close(&priv->cbc);
 636
 637     return ff_vaapi_encode_close(avctx);
 638 }
 639
 640 #define OFFSET(x) offsetof(VAAPIEncodeMPEG2Context, x)
 641 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 642 static const AVOption vaapi_encode_mpeg2_options[] = {
 643     VAAPI_ENCODE_COMMON_OPTIONS,
 644     VAAPI_ENCODE_RC_OPTIONS,
 645
 646     { "profile", "Set profile (in profile_and_level_indication)",
 647       OFFSET(profile), AV_OPT_TYPE_INT,
 648       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 7, FLAGS, "profile" },
 649
 650 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
 651       { .i64 = value }, 0, 0, FLAGS, "profile"
 652     { PROFILE("simple", FF_PROFILE_MPEG2_SIMPLE) },
 653     { PROFILE("main",   FF_PROFILE_MPEG2_MAIN)   },
 654 #undef PROFILE
 655
 656     { "level", "Set level (in profile_and_level_indication)",
 657       OFFSET(level), AV_OPT_TYPE_INT,
 658       { .i64 = 4 }, 0, 15, FLAGS, "level" },
 659
 660 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
 661       { .i64 = value }, 0, 0, FLAGS, "level"
 662     { LEVEL("low",       10) },
 663     { LEVEL("main",       8) },
 664     { LEVEL("high_1440",  6) },
 665     { LEVEL("high",       4) },
 666 #undef LEVEL
 667
 668     { NULL },
 669 };
 670
 671 static const AVCodecDefault vaapi_encode_mpeg2_defaults[] = {
 672     { "b",              "0"   },
 673     { "bf",             "1"   },
 674     { "g",              "120" },
 675     { "i_qfactor",      "1"   },
 676     { "i_qoffset",      "0"   },
 677     { "b_qfactor",      "6/5" },
 678     { "b_qoffset",      "0"   },
 679     { "qmin",           "-1"  },
 680     { "qmax",           "-1"  },
 681     { NULL },
 682 };
 683
 684 static const AVClass vaapi_encode_mpeg2_class = {
 685     .class_name = "mpeg2_vaapi",
 686     .item_name  = av_default_item_name,
 687     .option     = vaapi_encode_mpeg2_options,
 688     .version    = LIBAVUTIL_VERSION_INT,
 689 };
 690
 691 AVCodec ff_mpeg2_vaapi_encoder = {
 692     .name           = "mpeg2_vaapi",
 693     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 (VAAPI)"),
 694     .type           = AVMEDIA_TYPE_VIDEO,
 695     .id             = AV_CODEC_ID_MPEG2VIDEO,
 696     .priv_data_size = sizeof(VAAPIEncodeMPEG2Context),
 697     .init           = &vaapi_encode_mpeg2_init,
 698     .send_frame     = &ff_vaapi_encode_send_frame,
 699     .receive_packet = &ff_vaapi_encode_receive_packet,
 700     .close          = &vaapi_encode_mpeg2_close,
 701     .priv_class     = &vaapi_encode_mpeg2_class,
 702     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
 703     .defaults       = vaapi_encode_mpeg2_defaults,
 704     .pix_fmts = (const enum AVPixelFormat[]) {
 705         AV_PIX_FMT_VAAPI,
 706         AV_PIX_FMT_NONE,
 707     },
 708     .wrapper_name   = "vaapi",
 709 };