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 mb_width;
  39     int mb_height;
  40
  41     int quant_i;
  42     int quant_p;
  43     int quant_b;
  44
  45     unsigned int bit_rate;
  46     unsigned int vbv_buffer_size;
  47
  48     AVRational frame_rate;
  49
  50     unsigned int f_code_horizontal;
  51     unsigned int f_code_vertical;
  52
  53     // Stream state.
  54     int64_t last_i_frame;
  55
  56     // Writer structures.
  57     MPEG2RawSequenceHeader sequence_header;
  58     MPEG2RawExtensionData  sequence_extension;
  59     MPEG2RawExtensionData  sequence_display_extension;
  60     MPEG2RawGroupOfPicturesHeader gop_header;
  61     MPEG2RawPictureHeader  picture_header;
  62     MPEG2RawExtensionData  picture_coding_extension;
  63
  64     CodedBitstreamContext *cbc;
  65     CodedBitstreamFragment current_fragment;
  66 } VAAPIEncodeMPEG2Context;
  67
  68
  69 static int vaapi_encode_mpeg2_write_fragment(AVCodecContext *avctx,
  70                                              char *data, size_t *data_len,
  71                                              CodedBitstreamFragment *frag)
  72 {
  73     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
  74     int err;
  75
  76     err = ff_cbs_write_fragment_data(priv->cbc, frag);
  77     if (err < 0) {
  78         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
  79         return err;
  80     }
  81
  82     if (*data_len < 8 * frag->data_size - frag->data_bit_padding) {
  83         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
  84                "%zu < %zu.\n", *data_len,
  85                8 * frag->data_size - frag->data_bit_padding);
  86         return AVERROR(ENOSPC);
  87     }
  88
  89     memcpy(data, frag->data, frag->data_size);
  90     *data_len = 8 * frag->data_size - frag->data_bit_padding;
  91
  92     return 0;
  93 }
  94
  95 static int vaapi_encode_mpeg2_add_header(AVCodecContext *avctx,
  96                                          CodedBitstreamFragment *frag,
  97                                          int type, void *header)
  98 {
  99     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 100     int err;
 101
 102     err = ff_cbs_insert_unit_content(priv->cbc, frag, -1, type, header, NULL);
 103     if (err < 0) {
 104         av_log(avctx, AV_LOG_ERROR, "Failed to add header: "
 105                "type = %d.\n", type);
 106         return err;
 107     }
 108
 109     return 0;
 110 }
 111
 112 static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx,
 113                                                     char *data, size_t *data_len)
 114 {
 115     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 116     CodedBitstreamFragment  *frag = &priv->current_fragment;
 117     int err;
 118
 119     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_SEQUENCE_HEADER,
 120                                         &priv->sequence_header);
 121     if (err < 0)
 122         goto fail;
 123
 124     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 125                                         &priv->sequence_extension);
 126     if (err < 0)
 127         goto fail;
 128
 129     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 130                                         &priv->sequence_display_extension);
 131     if (err < 0)
 132         goto fail;
 133
 134     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_GROUP,
 135                                         &priv->gop_header);
 136     if (err < 0)
 137         goto fail;
 138
 139     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 140 fail:
 141     ff_cbs_fragment_uninit(priv->cbc, frag);
 142     return 0;
 143 }
 144
 145 static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx,
 146                                                    VAAPIEncodePicture *pic,
 147                                                    char *data, size_t *data_len)
 148 {
 149     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 150     CodedBitstreamFragment  *frag = &priv->current_fragment;
 151     int err;
 152
 153     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_PICTURE,
 154                                         &priv->picture_header);
 155     if (err < 0)
 156         goto fail;
 157
 158     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 159                                         &priv->picture_coding_extension);
 160     if (err < 0)
 161         goto fail;
 162
 163     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 164 fail:
 165     ff_cbs_fragment_uninit(priv->cbc, frag);
 166     return 0;
 167 }
 168
 169 static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)
 170 {
 171     VAAPIEncodeContext                 *ctx = avctx->priv_data;
 172     VAAPIEncodeMPEG2Context           *priv = avctx->priv_data;
 173     MPEG2RawSequenceHeader              *sh = &priv->sequence_header;
 174     MPEG2RawSequenceExtension           *se = &priv->sequence_extension.data.sequence;
 175     MPEG2RawSequenceDisplayExtension   *sde = &priv->sequence_display_extension.data.sequence_display;
 176     MPEG2RawGroupOfPicturesHeader     *goph = &priv->gop_header;
 177     MPEG2RawPictureHeader               *ph = &priv->picture_header;
 178     MPEG2RawPictureCodingExtension     *pce = &priv->picture_coding_extension.data.picture_coding;
 179     VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
 180     VAEncPictureParameterBufferMPEG2  *vpic = ctx->codec_picture_params;
 181     int code, ext_n, ext_d;
 182
 183     memset(sh,   0, sizeof(*sh));
 184     memset(se,   0, sizeof(*se));
 185     memset(sde,  0, sizeof(*sde));
 186     memset(goph, 0, sizeof(*goph));
 187     memset(ph,   0, sizeof(*ph));
 188     memset(pce,  0, sizeof(*pce));
 189
 190
 191     if (ctx->va_bit_rate > 0) {
 192         priv->bit_rate = (ctx->va_bit_rate + 399) / 400;
 193     } else {
 194         // Unknown (not a bitrate-targetting mode), so just use the
 195         // highest value.
 196         priv->bit_rate = 0x3fffffff;
 197     }
 198     if (avctx->rc_buffer_size > 0) {
 199         priv->vbv_buffer_size = (avctx->rc_buffer_size + (1 << 14) - 1) >> 14;
 200     } else {
 201         // Unknown, so guess a value from the bitrate.
 202         priv->vbv_buffer_size = priv->bit_rate >> 14;
 203     }
 204
 205     switch (avctx->level) {
 206     case 4: // High.
 207     case 6: // High 1440.
 208         priv->f_code_horizontal = 9;
 209         priv->f_code_vertical   = 5;
 210         break;
 211     case 8: // Main.
 212         priv->f_code_horizontal = 8;
 213         priv->f_code_vertical   = 5;
 214         break;
 215     case 10: // Low.
 216     default:
 217         priv->f_code_horizontal = 7;
 218         priv->f_code_vertical   = 4;
 219         break;
 220     }
 221
 222
 223     // Sequence header
 224
 225     sh->sequence_header_code = MPEG2_START_SEQUENCE_HEADER;
 226
 227     sh->horizontal_size_value = avctx->width  & 0xfff;
 228     sh->vertical_size_value   = avctx->height & 0xfff;
 229
 230     if (avctx->sample_aspect_ratio.num != 0 &&
 231         avctx->sample_aspect_ratio.den != 0) {
 232         AVRational dar = av_div_q(avctx->sample_aspect_ratio,
 233                                   (AVRational) { avctx->width, avctx->height });
 234
 235         if (av_cmp_q(avctx->sample_aspect_ratio, (AVRational) { 1, 1 }) == 0) {
 236             sh->aspect_ratio_information = 1;
 237         } else if (av_cmp_q(dar, (AVRational) { 3, 4 }) == 0) {
 238             sh->aspect_ratio_information = 2;
 239         } else if (av_cmp_q(dar, (AVRational) { 9, 16 }) == 0) {
 240             sh->aspect_ratio_information = 3;
 241         } else if (av_cmp_q(dar, (AVRational) { 100, 221 }) == 0) {
 242             sh->aspect_ratio_information = 4;
 243         } else {
 244             av_log(avctx, AV_LOG_WARNING, "Sample aspect ratio %d:%d is not "
 245                    "representable, signalling square pixels instead.\n",
 246                    avctx->sample_aspect_ratio.num,
 247                    avctx->sample_aspect_ratio.den);
 248             sh->aspect_ratio_information = 1;
 249         }
 250     } else {
 251         // Unknown - assume square pixels.
 252         sh->aspect_ratio_information = 1;
 253     }
 254
 255     if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
 256         priv->frame_rate = avctx->framerate;
 257     else
 258         priv->frame_rate = av_inv_q(avctx->time_base);
 259     ff_mpeg12_find_best_frame_rate(priv->frame_rate,
 260                                    &code, &ext_n, &ext_d, 0);
 261     sh->frame_rate_code = code;
 262
 263     sh->bit_rate_value        = priv->bit_rate & 0x3ffff;
 264     sh->vbv_buffer_size_value = priv->vbv_buffer_size & 0x3ff;
 265
 266     sh->constrained_parameters_flag     = 0;
 267     sh->load_intra_quantiser_matrix     = 0;
 268     sh->load_non_intra_quantiser_matrix = 0;
 269
 270
 271     // Sequence extension
 272
 273     priv->sequence_extension.extension_start_code = MPEG2_START_EXTENSION;
 274     priv->sequence_extension.extension_start_code_identifier =
 275         MPEG2_EXTENSION_SEQUENCE;
 276
 277     se->profile_and_level_indication = avctx->profile << 4 | avctx->level;
 278     se->progressive_sequence = 1;
 279     se->chroma_format        = 1;
 280
 281     se->horizontal_size_extension = avctx->width  >> 12;
 282     se->vertical_size_extension   = avctx->height >> 12;
 283
 284     se->bit_rate_extension        = priv->bit_rate >> 18;
 285     se->vbv_buffer_size_extension = priv->vbv_buffer_size >> 10;
 286     se->low_delay                 = ctx->b_per_p == 0;
 287
 288     se->frame_rate_extension_n = ext_n;
 289     se->frame_rate_extension_d = ext_d;
 290
 291
 292     // Sequence display extension
 293
 294     priv->sequence_display_extension.extension_start_code =
 295         MPEG2_START_EXTENSION;
 296     priv->sequence_display_extension.extension_start_code_identifier =
 297         MPEG2_EXTENSION_SEQUENCE_DISPLAY;
 298
 299     sde->video_format = 5;
 300     if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 301         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 302         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 303         sde->colour_description       = 1;
 304         sde->colour_primaries         = avctx->color_primaries;
 305         sde->transfer_characteristics = avctx->color_trc;
 306         sde->matrix_coefficients      = avctx->colorspace;
 307     } else {
 308         sde->colour_description = 0;
 309     }
 310
 311     sde->display_horizontal_size = avctx->width;
 312     sde->display_vertical_size   = avctx->height;
 313
 314
 315     // GOP header
 316
 317     goph->group_start_code = MPEG2_START_GROUP;
 318
 319     goph->time_code   = 0;
 320     goph->closed_gop  = 1;
 321     goph->broken_link = 0;
 322
 323
 324     // Defaults for picture header
 325
 326     ph->picture_start_code = MPEG2_START_PICTURE;
 327
 328     ph->vbv_delay = 0xffff; // Not currently calculated.
 329
 330     ph->full_pel_forward_vector  = 0;
 331     ph->forward_f_code           = 7;
 332     ph->full_pel_backward_vector = 0;
 333     ph->forward_f_code           = 7;
 334
 335
 336     // Defaults for picture coding extension
 337
 338     priv->picture_coding_extension.extension_start_code =
 339         MPEG2_START_EXTENSION;
 340     priv->picture_coding_extension.extension_start_code_identifier =
 341         MPEG2_EXTENSION_PICTURE_CODING;
 342
 343     pce->intra_dc_precision         = 0;
 344     pce->picture_structure          = 3;
 345     pce->top_field_first            = 0;
 346     pce->frame_pred_frame_dct       = 1;
 347     pce->concealment_motion_vectors = 0;
 348     pce->q_scale_type               = 0;
 349     pce->intra_vlc_format           = 0;
 350     pce->alternate_scan             = 0;
 351     pce->repeat_first_field         = 0;
 352     pce->progressive_frame          = 1;
 353     pce->composite_display_flag     = 0;
 354
 355
 356
 357     *vseq = (VAEncSequenceParameterBufferMPEG2) {
 358         .intra_period = ctx->gop_size,
 359         .ip_period    = ctx->b_per_p + 1,
 360
 361         .picture_width  = avctx->width,
 362         .picture_height = avctx->height,
 363
 364         .bits_per_second          = ctx->va_bit_rate,
 365         .frame_rate               = av_q2d(priv->frame_rate),
 366         .aspect_ratio_information = sh->aspect_ratio_information,
 367         .vbv_buffer_size          = priv->vbv_buffer_size,
 368
 369         .sequence_extension.bits = {
 370             .profile_and_level_indication = se->profile_and_level_indication,
 371             .progressive_sequence         = se->progressive_sequence,
 372             .chroma_format                = se->chroma_format,
 373             .low_delay                    = se->low_delay,
 374             .frame_rate_extension_n       = se->frame_rate_extension_n,
 375             .frame_rate_extension_d       = se->frame_rate_extension_d,
 376         },
 377
 378         .new_gop_header = 1,
 379         .gop_header.bits = {
 380             .time_code   = goph->time_code,
 381             .closed_gop  = goph->closed_gop,
 382             .broken_link = goph->broken_link,
 383         },
 384     };
 385
 386     *vpic = (VAEncPictureParameterBufferMPEG2) {
 387         .forward_reference_picture  = VA_INVALID_ID,
 388         .backward_reference_picture = VA_INVALID_ID,
 389         .reconstructed_picture      = VA_INVALID_ID,
 390         .coded_buf                  = VA_INVALID_ID,
 391
 392         .vbv_delay = 0xffff,
 393         .f_code    = { { 15, 15 }, { 15, 15 } },
 394
 395         .picture_coding_extension.bits = {
 396             .intra_dc_precision         = pce->intra_dc_precision,
 397             .picture_structure          = pce->picture_structure,
 398             .top_field_first            = pce->top_field_first,
 399             .frame_pred_frame_dct       = pce->frame_pred_frame_dct,
 400             .concealment_motion_vectors = pce->concealment_motion_vectors,
 401             .q_scale_type               = pce->q_scale_type,
 402             .intra_vlc_format           = pce->intra_vlc_format,
 403             .alternate_scan             = pce->alternate_scan,
 404             .repeat_first_field         = pce->repeat_first_field,
 405             .progressive_frame          = pce->progressive_frame,
 406             .composite_display_flag     = pce->composite_display_flag,
 407         },
 408
 409         .composite_display.bits = {
 410             .v_axis            = pce->v_axis,
 411             .field_sequence    = pce->field_sequence,
 412             .sub_carrier       = pce->sub_carrier,
 413             .burst_amplitude   = pce->burst_amplitude,
 414             .sub_carrier_phase = pce->sub_carrier_phase,
 415         },
 416     };
 417
 418     return 0;
 419 }
 420
 421 static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx,
 422                                                  VAAPIEncodePicture *pic)
 423 {
 424     VAAPIEncodeMPEG2Context          *priv = avctx->priv_data;
 425     MPEG2RawPictureHeader              *ph = &priv->picture_header;
 426     MPEG2RawPictureCodingExtension    *pce = &priv->picture_coding_extension.data.picture_coding;
 427     VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;
 428
 429     if (pic->type == PICTURE_TYPE_IDR || pic->type == PICTURE_TYPE_I) {
 430         ph->temporal_reference  = 0;
 431         ph->picture_coding_type = 1;
 432         priv->last_i_frame = pic->display_order;
 433     } else {
 434         ph->temporal_reference = pic->display_order - priv->last_i_frame;
 435         ph->picture_coding_type = pic->type == PICTURE_TYPE_B ? 3 : 2;
 436     }
 437
 438     if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {
 439         pce->f_code[0][0] = priv->f_code_horizontal;
 440         pce->f_code[0][1] = priv->f_code_vertical;
 441     } else {
 442         pce->f_code[0][0] = 15;
 443         pce->f_code[0][1] = 15;
 444     }
 445     if (pic->type == PICTURE_TYPE_B) {
 446         pce->f_code[1][0] = priv->f_code_horizontal;
 447         pce->f_code[1][1] = priv->f_code_vertical;
 448     } else {
 449         pce->f_code[1][0] = 15;
 450         pce->f_code[1][1] = 15;
 451     }
 452
 453     vpic->reconstructed_picture = pic->recon_surface;
 454     vpic->coded_buf             = pic->output_buffer;
 455
 456     switch (pic->type) {
 457     case PICTURE_TYPE_IDR:
 458     case PICTURE_TYPE_I:
 459         vpic->picture_type = VAEncPictureTypeIntra;
 460         break;
 461     case PICTURE_TYPE_P:
 462         vpic->picture_type = VAEncPictureTypePredictive;
 463         vpic->forward_reference_picture = pic->refs[0]->recon_surface;
 464         break;
 465     case PICTURE_TYPE_B:
 466         vpic->picture_type = VAEncPictureTypeBidirectional;
 467         vpic->forward_reference_picture  = pic->refs[0]->recon_surface;
 468         vpic->backward_reference_picture = pic->refs[1]->recon_surface;
 469         break;
 470     default:
 471         av_assert0(0 && "invalid picture type");
 472     }
 473
 474     vpic->temporal_reference = ph->temporal_reference;
 475     vpic->f_code[0][0]       = pce->f_code[0][0];
 476     vpic->f_code[0][1]       = pce->f_code[0][1];
 477     vpic->f_code[1][0]       = pce->f_code[1][0];
 478     vpic->f_code[1][1]       = pce->f_code[1][1];
 479
 480     pic->nb_slices = priv->mb_height;
 481
 482     return 0;
 483 }
 484
 485 static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx,
 486                                                VAAPIEncodePicture *pic,
 487                                                VAAPIEncodeSlice *slice)
 488 {
 489     VAAPIEncodeMPEG2Context            *priv = avctx->priv_data;
 490     VAEncSliceParameterBufferMPEG2   *vslice = slice->codec_slice_params;
 491     int qp;
 492
 493     vslice->macroblock_address = priv->mb_width * slice->index;
 494     vslice->num_macroblocks    = priv->mb_width;
 495
 496     switch (pic->type) {
 497     case PICTURE_TYPE_IDR:
 498     case PICTURE_TYPE_I:
 499         qp = priv->quant_i;
 500         break;
 501     case PICTURE_TYPE_P:
 502         qp = priv->quant_p;
 503         break;
 504     case PICTURE_TYPE_B:
 505         qp = priv->quant_b;
 506         break;
 507     default:
 508         av_assert0(0 && "invalid picture type");
 509     }
 510
 511     vslice->quantiser_scale_code = qp;
 512     vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||
 513                               pic->type == PICTURE_TYPE_I);
 514
 515     return 0;
 516 }
 517
 518 static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)
 519 {
 520     VAAPIEncodeContext       *ctx = avctx->priv_data;
 521     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 522     int err;
 523
 524     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_MPEG2VIDEO, avctx);
 525     if (err < 0)
 526         return err;
 527
 528     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 529     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 530
 531     if (ctx->va_rc_mode == VA_RC_CQP) {
 532         priv->quant_p = av_clip(avctx->global_quality, 1, 31);
 533         if (avctx->i_quant_factor > 0.0)
 534             priv->quant_i = av_clip((avctx->global_quality *
 535                                      avctx->i_quant_factor +
 536                                      avctx->i_quant_offset) + 0.5,
 537                                     1, 31);
 538         else
 539             priv->quant_i = priv->quant_p;
 540         if (avctx->b_quant_factor > 0.0)
 541             priv->quant_b = av_clip((avctx->global_quality *
 542                                      avctx->b_quant_factor +
 543                                      avctx->b_quant_offset) + 0.5,
 544                                     1, 31);
 545         else
 546             priv->quant_b = priv->quant_p;
 547
 548         av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "
 549                "%d / %d / %d for I- / P- / B-frames.\n",
 550                priv->quant_i, priv->quant_p, priv->quant_b);
 551
 552     } else {
 553         av_assert0(0 && "Invalid RC mode.");
 554     }
 555
 556     return 0;
 557 }
 558
 559 static const VAAPIEncodeProfile vaapi_encode_mpeg2_profiles[] = {
 560     { FF_PROFILE_MPEG2_MAIN,   8, 3, 1, 1, VAProfileMPEG2Main   },
 561     { FF_PROFILE_MPEG2_SIMPLE, 8, 3, 1, 1, VAProfileMPEG2Simple },
 562     { FF_PROFILE_UNKNOWN }
 563 };
 564
 565 static const VAAPIEncodeType vaapi_encode_type_mpeg2 = {
 566     .profiles              = vaapi_encode_mpeg2_profiles,
 567
 568     .configure             = &vaapi_encode_mpeg2_configure,
 569
 570     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferMPEG2),
 571     .init_sequence_params  = &vaapi_encode_mpeg2_init_sequence_params,
 572
 573     .picture_params_size   = sizeof(VAEncPictureParameterBufferMPEG2),
 574     .init_picture_params   = &vaapi_encode_mpeg2_init_picture_params,
 575
 576     .slice_params_size     = sizeof(VAEncSliceParameterBufferMPEG2),
 577     .init_slice_params     = &vaapi_encode_mpeg2_init_slice_params,
 578
 579     .sequence_header_type  = VAEncPackedHeaderSequence,
 580     .write_sequence_header = &vaapi_encode_mpeg2_write_sequence_header,
 581
 582     .picture_header_type   = VAEncPackedHeaderPicture,
 583     .write_picture_header  = &vaapi_encode_mpeg2_write_picture_header,
 584 };
 585
 586 static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx)
 587 {
 588     VAAPIEncodeContext       *ctx = avctx->priv_data;
 589     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 590
 591     ctx->codec = &vaapi_encode_type_mpeg2;
 592
 593     if (avctx->profile == FF_PROFILE_UNKNOWN)
 594         avctx->profile = priv->profile;
 595     if (avctx->level == FF_LEVEL_UNKNOWN)
 596         avctx->level = priv->level;
 597
 598     // Reject unknown levels (these are required to set f_code for
 599     // motion vector encoding).
 600     switch (avctx->level) {
 601     case 4: // High
 602     case 6: // High 1440
 603     case 8: // Main
 604     case 10: // Low
 605         break;
 606     default:
 607         av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 level %d.\n",
 608                avctx->level);
 609         return AVERROR(EINVAL);
 610     }
 611
 612     if (avctx->height % 4096 == 0 || avctx->width % 4096 == 0) {
 613         av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support picture "
 614                "height or width divisible by 4096.\n");
 615         return AVERROR(EINVAL);
 616     }
 617
 618     ctx->desired_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE |
 619                                   VA_ENC_PACKED_HEADER_PICTURE;
 620
 621     ctx->surface_width  = FFALIGN(avctx->width,  16);
 622     ctx->surface_height = FFALIGN(avctx->height, 16);
 623
 624     return ff_vaapi_encode_init(avctx);
 625 }
 626
 627 static av_cold int vaapi_encode_mpeg2_close(AVCodecContext *avctx)
 628 {
 629     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 630
 631     ff_cbs_close(&priv->cbc);
 632
 633     return ff_vaapi_encode_close(avctx);
 634 }
 635
 636 #define OFFSET(x) offsetof(VAAPIEncodeMPEG2Context, x)
 637 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 638 static const AVOption vaapi_encode_mpeg2_options[] = {
 639     VAAPI_ENCODE_COMMON_OPTIONS,
 640
 641     { "profile", "Set profile (in profile_and_level_indication)",
 642       OFFSET(profile), AV_OPT_TYPE_INT,
 643       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 7, FLAGS, "profile" },
 644
 645 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
 646       { .i64 = value }, 0, 0, FLAGS, "profile"
 647     { PROFILE("simple", FF_PROFILE_MPEG2_SIMPLE) },
 648     { PROFILE("main",   FF_PROFILE_MPEG2_MAIN)   },
 649 #undef PROFILE
 650
 651     { "level", "Set level (in profile_and_level_indication)",
 652       OFFSET(level), AV_OPT_TYPE_INT,
 653       { .i64 = 4 }, 0, 15, FLAGS, "level" },
 654
 655 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
 656       { .i64 = value }, 0, 0, FLAGS, "level"
 657     { LEVEL("low",       10) },
 658     { LEVEL("main",       8) },
 659     { LEVEL("high_1440",  6) },
 660     { LEVEL("high",       4) },
 661 #undef LEVEL
 662
 663     { NULL },
 664 };
 665
 666 static const AVCodecDefault vaapi_encode_mpeg2_defaults[] = {
 667     { "b",              "0"   },
 668     { "bf",             "1"   },
 669     { "g",              "120" },
 670     { "i_qfactor",      "1"   },
 671     { "i_qoffset",      "0"   },
 672     { "b_qfactor",      "6/5" },
 673     { "b_qoffset",      "0"   },
 674     { "global_quality", "10"  },
 675     { "qmin",           "-1"  },
 676     { "qmax",           "-1"  },
 677     { NULL },
 678 };
 679
 680 static const AVClass vaapi_encode_mpeg2_class = {
 681     .class_name = "mpeg2_vaapi",
 682     .item_name  = av_default_item_name,
 683     .option     = vaapi_encode_mpeg2_options,
 684     .version    = LIBAVUTIL_VERSION_INT,
 685 };
 686
 687 AVCodec ff_mpeg2_vaapi_encoder = {
 688     .name           = "mpeg2_vaapi",
 689     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 (VAAPI)"),
 690     .type           = AVMEDIA_TYPE_VIDEO,
 691     .id             = AV_CODEC_ID_MPEG2VIDEO,
 692     .priv_data_size = sizeof(VAAPIEncodeMPEG2Context),
 693     .init           = &vaapi_encode_mpeg2_init,
 694     .encode2        = &ff_vaapi_encode2,
 695     .close          = &vaapi_encode_mpeg2_close,
 696     .priv_class     = &vaapi_encode_mpeg2_class,
 697     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
 698     .defaults       = vaapi_encode_mpeg2_defaults,
 699     .pix_fmts = (const enum AVPixelFormat[]) {
 700         AV_PIX_FMT_VAAPI,
 701         AV_PIX_FMT_NONE,
 702     },
 703     .wrapper_name   = "vaapi",
 704 };