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     int err;
  97
  98     err = ff_cbs_insert_unit_content(frag, -1, type, header, NULL);
  99     if (err < 0) {
 100         av_log(avctx, AV_LOG_ERROR, "Failed to add header: "
 101                "type = %d.\n", type);
 102         return err;
 103     }
 104
 105     return 0;
 106 }
 107
 108 static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx,
 109                                                     char *data, size_t *data_len)
 110 {
 111     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 112     CodedBitstreamFragment  *frag = &priv->current_fragment;
 113     int err;
 114
 115     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_SEQUENCE_HEADER,
 116                                         &priv->sequence_header);
 117     if (err < 0)
 118         goto fail;
 119
 120     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 121                                         &priv->sequence_extension);
 122     if (err < 0)
 123         goto fail;
 124
 125     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 126                                         &priv->sequence_display_extension);
 127     if (err < 0)
 128         goto fail;
 129
 130     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_GROUP,
 131                                         &priv->gop_header);
 132     if (err < 0)
 133         goto fail;
 134
 135     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 136 fail:
 137     ff_cbs_fragment_reset(frag);
 138     return 0;
 139 }
 140
 141 static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx,
 142                                                    VAAPIEncodePicture *pic,
 143                                                    char *data, size_t *data_len)
 144 {
 145     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 146     CodedBitstreamFragment  *frag = &priv->current_fragment;
 147     int err;
 148
 149     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_PICTURE,
 150                                         &priv->picture_header);
 151     if (err < 0)
 152         goto fail;
 153
 154     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 155                                         &priv->picture_coding_extension);
 156     if (err < 0)
 157         goto fail;
 158
 159     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 160 fail:
 161     ff_cbs_fragment_reset(frag);
 162     return 0;
 163 }
 164
 165 static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)
 166 {
 167     VAAPIEncodeContext                 *ctx = avctx->priv_data;
 168     VAAPIEncodeMPEG2Context           *priv = avctx->priv_data;
 169     MPEG2RawSequenceHeader              *sh = &priv->sequence_header;
 170     MPEG2RawSequenceExtension           *se = &priv->sequence_extension.data.sequence;
 171     MPEG2RawSequenceDisplayExtension   *sde = &priv->sequence_display_extension.data.sequence_display;
 172     MPEG2RawGroupOfPicturesHeader     *goph = &priv->gop_header;
 173     MPEG2RawPictureHeader               *ph = &priv->picture_header;
 174     MPEG2RawPictureCodingExtension     *pce = &priv->picture_coding_extension.data.picture_coding;
 175     VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
 176     VAEncPictureParameterBufferMPEG2  *vpic = ctx->codec_picture_params;
 177     int code, ext_n, ext_d;
 178
 179     memset(sh,   0, sizeof(*sh));
 180     memset(se,   0, sizeof(*se));
 181     memset(sde,  0, sizeof(*sde));
 182     memset(goph, 0, sizeof(*goph));
 183     memset(ph,   0, sizeof(*ph));
 184     memset(pce,  0, sizeof(*pce));
 185
 186
 187     if (ctx->va_bit_rate > 0) {
 188         priv->bit_rate = (ctx->va_bit_rate + 399) / 400;
 189     } else {
 190         // Unknown (not a bitrate-targetting mode), so just use the
 191         // highest value.
 192         priv->bit_rate = 0x3fffffff;
 193     }
 194     if (avctx->rc_buffer_size > 0) {
 195         priv->vbv_buffer_size = (avctx->rc_buffer_size + (1 << 14) - 1) >> 14;
 196     } else {
 197         // Unknown, so guess a value from the bitrate.
 198         priv->vbv_buffer_size = priv->bit_rate >> 14;
 199     }
 200
 201     switch (avctx->level) {
 202     case 4: // High.
 203     case 6: // High 1440.
 204         priv->f_code_horizontal = 9;
 205         priv->f_code_vertical   = 5;
 206         break;
 207     case 8: // Main.
 208         priv->f_code_horizontal = 8;
 209         priv->f_code_vertical   = 5;
 210         break;
 211     case 10: // Low.
 212     default:
 213         priv->f_code_horizontal = 7;
 214         priv->f_code_vertical   = 4;
 215         break;
 216     }
 217
 218
 219     // Sequence header
 220
 221     sh->sequence_header_code = MPEG2_START_SEQUENCE_HEADER;
 222
 223     sh->horizontal_size_value = avctx->width  & 0xfff;
 224     sh->vertical_size_value   = avctx->height & 0xfff;
 225
 226     if (avctx->sample_aspect_ratio.num != 0 &&
 227         avctx->sample_aspect_ratio.den != 0) {
 228         AVRational dar = av_div_q(avctx->sample_aspect_ratio,
 229                                   (AVRational) { avctx->width, avctx->height });
 230
 231         if (av_cmp_q(avctx->sample_aspect_ratio, (AVRational) { 1, 1 }) == 0) {
 232             sh->aspect_ratio_information = 1;
 233         } else if (av_cmp_q(dar, (AVRational) { 3, 4 }) == 0) {
 234             sh->aspect_ratio_information = 2;
 235         } else if (av_cmp_q(dar, (AVRational) { 9, 16 }) == 0) {
 236             sh->aspect_ratio_information = 3;
 237         } else if (av_cmp_q(dar, (AVRational) { 100, 221 }) == 0) {
 238             sh->aspect_ratio_information = 4;
 239         } else {
 240             av_log(avctx, AV_LOG_WARNING, "Sample aspect ratio %d:%d is not "
 241                    "representable, signalling square pixels instead.\n",
 242                    avctx->sample_aspect_ratio.num,
 243                    avctx->sample_aspect_ratio.den);
 244             sh->aspect_ratio_information = 1;
 245         }
 246     } else {
 247         // Unknown - assume square pixels.
 248         sh->aspect_ratio_information = 1;
 249     }
 250
 251     if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
 252         priv->frame_rate = avctx->framerate;
 253     else
 254         priv->frame_rate = av_inv_q(avctx->time_base);
 255     ff_mpeg12_find_best_frame_rate(priv->frame_rate,
 256                                    &code, &ext_n, &ext_d, 0);
 257     sh->frame_rate_code = code;
 258
 259     sh->bit_rate_value        = priv->bit_rate & 0x3ffff;
 260     sh->vbv_buffer_size_value = priv->vbv_buffer_size & 0x3ff;
 261
 262     sh->constrained_parameters_flag     = 0;
 263     sh->load_intra_quantiser_matrix     = 0;
 264     sh->load_non_intra_quantiser_matrix = 0;
 265
 266
 267     // Sequence extension
 268
 269     priv->sequence_extension.extension_start_code = MPEG2_START_EXTENSION;
 270     priv->sequence_extension.extension_start_code_identifier =
 271         MPEG2_EXTENSION_SEQUENCE;
 272
 273     se->profile_and_level_indication = avctx->profile << 4 | avctx->level;
 274     se->progressive_sequence = 1;
 275     se->chroma_format        = 1;
 276
 277     se->horizontal_size_extension = avctx->width  >> 12;
 278     se->vertical_size_extension   = avctx->height >> 12;
 279
 280     se->bit_rate_extension        = priv->bit_rate >> 18;
 281     se->vbv_buffer_size_extension = priv->vbv_buffer_size >> 10;
 282     se->low_delay                 = ctx->b_per_p == 0;
 283
 284     se->frame_rate_extension_n = ext_n;
 285     se->frame_rate_extension_d = ext_d;
 286
 287
 288     // Sequence display extension
 289
 290     priv->sequence_display_extension.extension_start_code =
 291         MPEG2_START_EXTENSION;
 292     priv->sequence_display_extension.extension_start_code_identifier =
 293         MPEG2_EXTENSION_SEQUENCE_DISPLAY;
 294
 295     // Unspecified video format, from table 6-6.
 296     sde->video_format = 5;
 297
 298     sde->colour_primaries         = avctx->color_primaries;
 299     sde->transfer_characteristics = avctx->color_trc;
 300     sde->matrix_coefficients      = avctx->colorspace;
 301     sde->colour_description       =
 302         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 303         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 304         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED;
 305
 306     sde->display_horizontal_size = avctx->width;
 307     sde->display_vertical_size   = avctx->height;
 308
 309
 310     // GOP header
 311
 312     goph->group_start_code = MPEG2_START_GROUP;
 313
 314     // Marker bit in the middle of time_code.
 315     goph->time_code   = 1 << 12;
 316     goph->closed_gop  = 1;
 317     goph->broken_link = 0;
 318
 319
 320     // Defaults for picture header
 321
 322     ph->picture_start_code = MPEG2_START_PICTURE;
 323
 324     ph->vbv_delay = 0xffff; // Not currently calculated.
 325
 326     ph->full_pel_forward_vector  = 0;
 327     ph->forward_f_code           = 7;
 328     ph->full_pel_backward_vector = 0;
 329     ph->forward_f_code           = 7;
 330
 331
 332     // Defaults for picture coding extension
 333
 334     priv->picture_coding_extension.extension_start_code =
 335         MPEG2_START_EXTENSION;
 336     priv->picture_coding_extension.extension_start_code_identifier =
 337         MPEG2_EXTENSION_PICTURE_CODING;
 338
 339     pce->intra_dc_precision         = 0;
 340     pce->picture_structure          = 3;
 341     pce->top_field_first            = 0;
 342     pce->frame_pred_frame_dct       = 1;
 343     pce->concealment_motion_vectors = 0;
 344     pce->q_scale_type               = 0;
 345     pce->intra_vlc_format           = 0;
 346     pce->alternate_scan             = 0;
 347     pce->repeat_first_field         = 0;
 348     pce->progressive_frame          = 1;
 349     pce->composite_display_flag     = 0;
 350
 351
 352
 353     *vseq = (VAEncSequenceParameterBufferMPEG2) {
 354         .intra_period = ctx->gop_size,
 355         .ip_period    = ctx->b_per_p + 1,
 356
 357         .picture_width  = avctx->width,
 358         .picture_height = avctx->height,
 359
 360         .bits_per_second          = ctx->va_bit_rate,
 361         .frame_rate               = av_q2d(priv->frame_rate),
 362         .aspect_ratio_information = sh->aspect_ratio_information,
 363         .vbv_buffer_size          = priv->vbv_buffer_size,
 364
 365         .sequence_extension.bits = {
 366             .profile_and_level_indication = se->profile_and_level_indication,
 367             .progressive_sequence         = se->progressive_sequence,
 368             .chroma_format                = se->chroma_format,
 369             .low_delay                    = se->low_delay,
 370             .frame_rate_extension_n       = se->frame_rate_extension_n,
 371             .frame_rate_extension_d       = se->frame_rate_extension_d,
 372         },
 373
 374         .new_gop_header = 1,
 375         .gop_header.bits = {
 376             .time_code   = goph->time_code,
 377             .closed_gop  = goph->closed_gop,
 378             .broken_link = goph->broken_link,
 379         },
 380     };
 381
 382     *vpic = (VAEncPictureParameterBufferMPEG2) {
 383         .forward_reference_picture  = VA_INVALID_ID,
 384         .backward_reference_picture = VA_INVALID_ID,
 385         .reconstructed_picture      = VA_INVALID_ID,
 386         .coded_buf                  = VA_INVALID_ID,
 387
 388         .vbv_delay = 0xffff,
 389         .f_code    = { { 15, 15 }, { 15, 15 } },
 390
 391         .picture_coding_extension.bits = {
 392             .intra_dc_precision         = pce->intra_dc_precision,
 393             .picture_structure          = pce->picture_structure,
 394             .top_field_first            = pce->top_field_first,
 395             .frame_pred_frame_dct       = pce->frame_pred_frame_dct,
 396             .concealment_motion_vectors = pce->concealment_motion_vectors,
 397             .q_scale_type               = pce->q_scale_type,
 398             .intra_vlc_format           = pce->intra_vlc_format,
 399             .alternate_scan             = pce->alternate_scan,
 400             .repeat_first_field         = pce->repeat_first_field,
 401             .progressive_frame          = pce->progressive_frame,
 402             .composite_display_flag     = pce->composite_display_flag,
 403         },
 404
 405         .composite_display.bits = {
 406             .v_axis            = pce->v_axis,
 407             .field_sequence    = pce->field_sequence,
 408             .sub_carrier       = pce->sub_carrier,
 409             .burst_amplitude   = pce->burst_amplitude,
 410             .sub_carrier_phase = pce->sub_carrier_phase,
 411         },
 412     };
 413
 414     return 0;
 415 }
 416
 417 static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx,
 418                                                  VAAPIEncodePicture *pic)
 419 {
 420     VAAPIEncodeMPEG2Context          *priv = avctx->priv_data;
 421     MPEG2RawPictureHeader              *ph = &priv->picture_header;
 422     MPEG2RawPictureCodingExtension    *pce = &priv->picture_coding_extension.data.picture_coding;
 423     VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;
 424
 425     if (pic->type == PICTURE_TYPE_IDR || pic->type == PICTURE_TYPE_I) {
 426         ph->temporal_reference  = 0;
 427         ph->picture_coding_type = 1;
 428         priv->last_i_frame = pic->display_order;
 429     } else {
 430         ph->temporal_reference = pic->display_order - priv->last_i_frame;
 431         ph->picture_coding_type = pic->type == PICTURE_TYPE_B ? 3 : 2;
 432     }
 433
 434     if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {
 435         pce->f_code[0][0] = priv->f_code_horizontal;
 436         pce->f_code[0][1] = priv->f_code_vertical;
 437     } else {
 438         pce->f_code[0][0] = 15;
 439         pce->f_code[0][1] = 15;
 440     }
 441     if (pic->type == PICTURE_TYPE_B) {
 442         pce->f_code[1][0] = priv->f_code_horizontal;
 443         pce->f_code[1][1] = priv->f_code_vertical;
 444     } else {
 445         pce->f_code[1][0] = 15;
 446         pce->f_code[1][1] = 15;
 447     }
 448
 449     vpic->reconstructed_picture = pic->recon_surface;
 450     vpic->coded_buf             = pic->output_buffer;
 451
 452     switch (pic->type) {
 453     case PICTURE_TYPE_IDR:
 454     case PICTURE_TYPE_I:
 455         vpic->picture_type = VAEncPictureTypeIntra;
 456         break;
 457     case PICTURE_TYPE_P:
 458         vpic->picture_type = VAEncPictureTypePredictive;
 459         vpic->forward_reference_picture = pic->refs[0]->recon_surface;
 460         break;
 461     case PICTURE_TYPE_B:
 462         vpic->picture_type = VAEncPictureTypeBidirectional;
 463         vpic->forward_reference_picture  = pic->refs[0]->recon_surface;
 464         vpic->backward_reference_picture = pic->refs[1]->recon_surface;
 465         break;
 466     default:
 467         av_assert0(0 && "invalid picture type");
 468     }
 469
 470     vpic->temporal_reference = ph->temporal_reference;
 471     vpic->f_code[0][0]       = pce->f_code[0][0];
 472     vpic->f_code[0][1]       = pce->f_code[0][1];
 473     vpic->f_code[1][0]       = pce->f_code[1][0];
 474     vpic->f_code[1][1]       = pce->f_code[1][1];
 475
 476     return 0;
 477 }
 478
 479 static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx,
 480                                                VAAPIEncodePicture *pic,
 481                                                VAAPIEncodeSlice *slice)
 482 {
 483     VAAPIEncodeMPEG2Context            *priv = avctx->priv_data;
 484     VAEncSliceParameterBufferMPEG2   *vslice = slice->codec_slice_params;
 485     int qp;
 486
 487     vslice->macroblock_address = slice->block_start;
 488     vslice->num_macroblocks    = slice->block_size;
 489
 490     switch (pic->type) {
 491     case PICTURE_TYPE_IDR:
 492     case PICTURE_TYPE_I:
 493         qp = priv->quant_i;
 494         break;
 495     case PICTURE_TYPE_P:
 496         qp = priv->quant_p;
 497         break;
 498     case PICTURE_TYPE_B:
 499         qp = priv->quant_b;
 500         break;
 501     default:
 502         av_assert0(0 && "invalid picture type");
 503     }
 504
 505     vslice->quantiser_scale_code = qp;
 506     vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||
 507                               pic->type == PICTURE_TYPE_I);
 508
 509     return 0;
 510 }
 511
 512 static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)
 513 {
 514     VAAPIEncodeContext       *ctx = avctx->priv_data;
 515     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 516     int err;
 517
 518     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_MPEG2VIDEO, avctx);
 519     if (err < 0)
 520         return err;
 521
 522     if (ctx->va_rc_mode == VA_RC_CQP) {
 523         priv->quant_p = av_clip(ctx->rc_quality, 1, 31);
 524         if (avctx->i_quant_factor > 0.0)
 525             priv->quant_i =
 526                 av_clip((avctx->i_quant_factor * priv->quant_p +
 527                          avctx->i_quant_offset) + 0.5, 1, 31);
 528         else
 529             priv->quant_i = priv->quant_p;
 530         if (avctx->b_quant_factor > 0.0)
 531             priv->quant_b =
 532                 av_clip((avctx->b_quant_factor * priv->quant_p +
 533                          avctx->b_quant_offset) + 0.5, 1, 31);
 534         else
 535             priv->quant_b = priv->quant_p;
 536
 537         av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "
 538                "%d / %d / %d for I- / P- / B-frames.\n",
 539                priv->quant_i, priv->quant_p, priv->quant_b);
 540
 541     } else {
 542         priv->quant_i = 16;
 543         priv->quant_p = 16;
 544         priv->quant_b = 16;
 545     }
 546
 547     ctx->slice_block_rows = FFALIGN(avctx->height, 16) / 16;
 548     ctx->slice_block_cols = FFALIGN(avctx->width,  16) / 16;
 549
 550     ctx->nb_slices  = ctx->slice_block_rows;
 551     ctx->slice_size = 1;
 552
 553     ctx->roi_quant_range = 31;
 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->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     .receive_packet = &ff_vaapi_encode_receive_packet,
 699     .close          = &vaapi_encode_mpeg2_close,
 700     .priv_class     = &vaapi_encode_mpeg2_class,
 701     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
 702                       AV_CODEC_CAP_DR1,
 703     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
 704     .defaults       = vaapi_encode_mpeg2_defaults,
 705     .pix_fmts = (const enum AVPixelFormat[]) {
 706         AV_PIX_FMT_VAAPI,
 707         AV_PIX_FMT_NONE,
 708     },
 709     .hw_configs     = ff_vaapi_encode_hw_configs,
 710     .wrapper_name   = "vaapi",
 711 };