libavcodec/vaapi_encode_mpeg2.c

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * Libav is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <va/va.h>
  20 #include <va/va_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     int mb_width;
  32     int mb_height;
  33
  34     int quant_i;
  35     int quant_p;
  36     int quant_b;
  37
  38     MPEG2RawSequenceHeader sequence_header;
  39     MPEG2RawExtensionData  sequence_extension;
  40     MPEG2RawExtensionData  sequence_display_extension;
  41     MPEG2RawGroupOfPicturesHeader gop_header;
  42     MPEG2RawPictureHeader  picture_header;
  43     MPEG2RawExtensionData  picture_coding_extension;
  44
  45     int64_t last_i_frame;
  46
  47     unsigned int bit_rate;
  48     unsigned int vbv_buffer_size;
  49
  50     AVRational frame_rate;
  51
  52     unsigned int f_code_horizontal;
  53     unsigned int f_code_vertical;
  54
  55     CodedBitstreamContext *cbc;
  56     CodedBitstreamFragment current_fragment;
  57 } VAAPIEncodeMPEG2Context;
  58
  59
  60 static int vaapi_encode_mpeg2_write_fragment(AVCodecContext *avctx,
  61                                              char *data, size_t *data_len,
  62                                              CodedBitstreamFragment *frag)
  63 {
  64     VAAPIEncodeContext       *ctx = avctx->priv_data;
  65     VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
  66     int err;
  67
  68     err = ff_cbs_write_fragment_data(priv->cbc, frag);
  69     if (err < 0) {
  70         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
  71         return err;
  72     }
  73
  74     if (*data_len < 8 * frag->data_size - frag->data_bit_padding) {
  75         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
  76                "%zu < %zu.\n", *data_len,
  77                8 * frag->data_size - frag->data_bit_padding);
  78         return AVERROR(ENOSPC);
  79     }
  80
  81     memcpy(data, frag->data, frag->data_size);
  82     *data_len = 8 * frag->data_size - frag->data_bit_padding;
  83
  84     return 0;
  85 }
  86
  87 static int vaapi_encode_mpeg2_add_header(AVCodecContext *avctx,
  88                                          CodedBitstreamFragment *frag,
  89                                          int type, void *header)
  90 {
  91     VAAPIEncodeContext       *ctx = avctx->priv_data;
  92     VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
  93     int err;
  94
  95     err = ff_cbs_insert_unit_content(priv->cbc, frag, -1, type, header, NULL);
  96     if (err < 0) {
  97         av_log(avctx, AV_LOG_ERROR, "Failed to add header: "
  98                "type = %d.\n", type);
  99         return err;
 100     }
 101
 102     return 0;
 103 }
 104
 105 static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx,
 106                                                     char *data, size_t *data_len)
 107 {
 108     VAAPIEncodeContext       *ctx = avctx->priv_data;
 109     VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
 110     CodedBitstreamFragment  *frag = &priv->current_fragment;
 111     int err;
 112
 113     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_SEQUENCE_HEADER,
 114                                         &priv->sequence_header);
 115     if (err < 0)
 116         goto fail;
 117
 118     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 119                                         &priv->sequence_extension);
 120     if (err < 0)
 121         goto fail;
 122
 123     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 124                                         &priv->sequence_display_extension);
 125     if (err < 0)
 126         goto fail;
 127
 128     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_GROUP,
 129                                         &priv->gop_header);
 130     if (err < 0)
 131         goto fail;
 132
 133     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 134 fail:
 135     ff_cbs_fragment_uninit(priv->cbc, frag);
 136     return 0;
 137 }
 138
 139 static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx,
 140                                                    VAAPIEncodePicture *pic,
 141                                                    char *data, size_t *data_len)
 142 {
 143     VAAPIEncodeContext       *ctx = avctx->priv_data;
 144     VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
 145     CodedBitstreamFragment  *frag = &priv->current_fragment;
 146     int err;
 147
 148     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_PICTURE,
 149                                         &priv->picture_header);
 150     if (err < 0)
 151         goto fail;
 152
 153     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
 154                                         &priv->picture_coding_extension);
 155     if (err < 0)
 156         goto fail;
 157
 158     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
 159 fail:
 160     ff_cbs_fragment_uninit(priv->cbc, frag);
 161     return 0;
 162 }
 163
 164 static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)
 165 {
 166     VAAPIEncodeContext                 *ctx = avctx->priv_data;
 167     VAAPIEncodeMPEG2Context           *priv = ctx->priv_data;
 168     MPEG2RawSequenceHeader              *sh = &priv->sequence_header;
 169     MPEG2RawSequenceExtension           *se = &priv->sequence_extension.data.sequence;
 170     MPEG2RawSequenceDisplayExtension   *sde = &priv->sequence_display_extension.data.sequence_display;
 171     MPEG2RawGroupOfPicturesHeader     *goph = &priv->gop_header;
 172     MPEG2RawPictureHeader               *ph = &priv->picture_header;
 173     MPEG2RawPictureCodingExtension     *pce = &priv->picture_coding_extension.data.picture_coding;
 174     VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
 175     VAEncPictureParameterBufferMPEG2  *vpic = ctx->codec_picture_params;
 176     int code, ext_n, ext_d;
 177
 178     memset(sh,   0, sizeof(*sh));
 179     memset(se,   0, sizeof(*se));
 180     memset(sde,  0, sizeof(*sde));
 181     memset(goph, 0, sizeof(*goph));
 182     memset(ph,   0, sizeof(*ph));
 183     memset(pce,  0, sizeof(*pce));
 184
 185
 186     if (avctx->bit_rate > 0) {
 187         priv->bit_rate = (avctx->bit_rate + 399) / 400;
 188     } else {
 189         // Unknown (not a bitrate-targetting mode), so just use the
 190         // highest value.
 191         priv->bit_rate = 0x3fffffff;
 192     }
 193     if (avctx->rc_buffer_size > 0) {
 194         priv->vbv_buffer_size = (avctx->rc_buffer_size + (1 << 14) - 1) >> 14;
 195     } else {
 196         // Unknown, so guess a value from the bitrate.
 197         priv->vbv_buffer_size = priv->bit_rate >> 14;
 198     }
 199
 200     switch (avctx->level) {
 201     case 4: // High.
 202     case 6: // High 1440.
 203         priv->f_code_horizontal = 9;
 204         priv->f_code_vertical   = 5;
 205         break;
 206     case 8: // Main.
 207         priv->f_code_horizontal = 8;
 208         priv->f_code_vertical   = 5;
 209         break;
 210     case 10: // Low.
 211     default:
 212         priv->f_code_horizontal = 7;
 213         priv->f_code_vertical   = 4;
 214         break;
 215     }
 216
 217
 218     // Sequence header
 219
 220     sh->sequence_header_code = MPEG2_START_SEQUENCE_HEADER;
 221
 222     sh->horizontal_size_value = avctx->width  & 0xfff;
 223     sh->vertical_size_value   = avctx->height & 0xfff;
 224
 225     if (avctx->sample_aspect_ratio.num != 0 &&
 226         avctx->sample_aspect_ratio.den != 0) {
 227         AVRational dar = av_div_q(avctx->sample_aspect_ratio,
 228                                   (AVRational) { avctx->width, avctx->height });
 229
 230         if (av_cmp_q(avctx->sample_aspect_ratio, (AVRational) { 1, 1 }) == 0) {
 231             sh->aspect_ratio_information = 1;
 232         } else if (av_cmp_q(dar, (AVRational) { 3, 4 }) == 0) {
 233             sh->aspect_ratio_information = 2;
 234         } else if (av_cmp_q(dar, (AVRational) { 9, 16 }) == 0) {
 235             sh->aspect_ratio_information = 3;
 236         } else if (av_cmp_q(dar, (AVRational) { 100, 221 }) == 0) {
 237             sh->aspect_ratio_information = 4;
 238         } else {
 239             av_log(avctx, AV_LOG_WARNING, "Sample aspect ratio %d:%d is not "
 240                    "representable, signalling square pixels instead.\n",
 241                    avctx->sample_aspect_ratio.num,
 242                    avctx->sample_aspect_ratio.den);
 243             sh->aspect_ratio_information = 1;
 244         }
 245     } else {
 246         // Unknown - assume square pixels.
 247         sh->aspect_ratio_information = 1;
 248     }
 249
 250     if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
 251         priv->frame_rate = avctx->framerate;
 252     else
 253         priv->frame_rate = av_inv_q(avctx->time_base);
 254     ff_mpeg12_find_best_frame_rate(priv->frame_rate,
 255                                    &code, &ext_n, &ext_d, 0);
 256     sh->frame_rate_code = code;
 257
 258     sh->bit_rate_value        = priv->bit_rate & 0x3ffff;
 259     sh->vbv_buffer_size_value = priv->vbv_buffer_size & 0x3ff;
 260
 261     sh->constrained_parameters_flag     = 0;
 262     sh->load_intra_quantiser_matrix     = 0;
 263     sh->load_non_intra_quantiser_matrix = 0;
 264
 265
 266     // Sequence extension
 267
 268     priv->sequence_extension.extension_start_code = MPEG2_START_EXTENSION;
 269     priv->sequence_extension.extension_start_code_identifier =
 270         MPEG2_EXTENSION_SEQUENCE;
 271
 272     se->profile_and_level_indication = avctx->profile << 4 | avctx->level;
 273     se->progressive_sequence = 1;
 274     se->chroma_format        = 1;
 275
 276     se->horizontal_size_extension = avctx->width  >> 12;
 277     se->vertical_size_extension   = avctx->height >> 12;
 278
 279     se->bit_rate_extension        = priv->bit_rate >> 18;
 280     se->vbv_buffer_size_extension = priv->vbv_buffer_size >> 10;
 281     se->low_delay                 = ctx->b_per_p == 0;
 282
 283     se->frame_rate_extension_n = ext_n;
 284     se->frame_rate_extension_d = ext_d;
 285
 286
 287     // Sequence display extension
 288
 289     priv->sequence_display_extension.extension_start_code =
 290         MPEG2_START_EXTENSION;
 291     priv->sequence_display_extension.extension_start_code_identifier =
 292         MPEG2_EXTENSION_SEQUENCE_DISPLAY;
 293
 294     sde->video_format = 5;
 295     if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 296         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 297         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 298         sde->colour_description       = 1;
 299         sde->colour_primaries         = avctx->color_primaries;
 300         sde->transfer_characteristics = avctx->color_trc;
 301         sde->matrix_coefficients      = avctx->colorspace;
 302     } else {
 303         sde->colour_description = 0;
 304     }
 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     goph->time_code   = 0;
 315     goph->closed_gop  = 1;
 316     goph->broken_link = 0;
 317
 318
 319     // Defaults for picture header
 320
 321     ph->picture_start_code = MPEG2_START_PICTURE;
 322
 323     ph->vbv_delay = 0xffff; // Not currently calculated.
 324
 325     ph->full_pel_forward_vector  = 0;
 326     ph->forward_f_code           = 7;
 327     ph->full_pel_backward_vector = 0;
 328     ph->forward_f_code           = 7;
 329
 330
 331     // Defaults for picture coding extension
 332
 333     priv->picture_coding_extension.extension_start_code =
 334         MPEG2_START_EXTENSION;
 335     priv->picture_coding_extension.extension_start_code_identifier =
 336         MPEG2_EXTENSION_PICTURE_CODING;
 337
 338     pce->intra_dc_precision         = 0;
 339     pce->picture_structure          = 3;
 340     pce->top_field_first            = 0;
 341     pce->frame_pred_frame_dct       = 1;
 342     pce->concealment_motion_vectors = 0;
 343     pce->q_scale_type               = 0;
 344     pce->intra_vlc_format           = 0;
 345     pce->alternate_scan             = 0;
 346     pce->repeat_first_field         = 0;
 347     pce->progressive_frame          = 1;
 348     pce->composite_display_flag     = 0;
 349
 350
 351
 352     *vseq = (VAEncSequenceParameterBufferMPEG2) {
 353         .intra_period = avctx->gop_size,
 354         .ip_period    = ctx->b_per_p + 1,
 355
 356         .picture_width  = avctx->width,
 357         .picture_height = avctx->height,
 358
 359         .bits_per_second          = avctx->bit_rate,
 360         .frame_rate               = av_q2d(priv->frame_rate),
 361         .aspect_ratio_information = sh->aspect_ratio_information,
 362         .vbv_buffer_size          = priv->vbv_buffer_size,
 363
 364         .sequence_extension.bits = {
 365             .profile_and_level_indication = se->profile_and_level_indication,
 366             .progressive_sequence         = se->progressive_sequence,
 367             .chroma_format                = se->chroma_format,
 368             .low_delay                    = se->low_delay,
 369             .frame_rate_extension_n       = se->frame_rate_extension_n,
 370             .frame_rate_extension_d       = se->frame_rate_extension_d,
 371         },
 372
 373         .new_gop_header = 1,
 374         .gop_header.bits = {
 375             .time_code   = goph->time_code,
 376             .closed_gop  = goph->closed_gop,
 377             .broken_link = goph->broken_link,
 378         },
 379     };
 380
 381     *vpic = (VAEncPictureParameterBufferMPEG2) {
 382         .forward_reference_picture  = VA_INVALID_ID,
 383         .backward_reference_picture = VA_INVALID_ID,
 384         .reconstructed_picture      = VA_INVALID_ID,
 385         .coded_buf                  = VA_INVALID_ID,
 386
 387         .vbv_delay = 0xffff,
 388         .f_code    = { { 15, 15 }, { 15, 15 } },
 389
 390         .picture_coding_extension.bits = {
 391             .intra_dc_precision         = pce->intra_dc_precision,
 392             .picture_structure          = pce->picture_structure,
 393             .top_field_first            = pce->top_field_first,
 394             .frame_pred_frame_dct       = pce->frame_pred_frame_dct,
 395             .concealment_motion_vectors = pce->concealment_motion_vectors,
 396             .q_scale_type               = pce->q_scale_type,
 397             .intra_vlc_format           = pce->intra_vlc_format,
 398             .alternate_scan             = pce->alternate_scan,
 399             .repeat_first_field         = pce->repeat_first_field,
 400             .progressive_frame          = pce->progressive_frame,
 401             .composite_display_flag     = pce->composite_display_flag,
 402         },
 403
 404         .composite_display.bits = {
 405             .v_axis            = pce->v_axis,
 406             .field_sequence    = pce->field_sequence,
 407             .sub_carrier       = pce->sub_carrier,
 408             .burst_amplitude   = pce->burst_amplitude,
 409             .sub_carrier_phase = pce->sub_carrier_phase,
 410         },
 411     };
 412
 413     return 0;
 414 }
 415
 416 static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx,
 417                                                  VAAPIEncodePicture *pic)
 418 {
 419     VAAPIEncodeContext                *ctx = avctx->priv_data;
 420     VAAPIEncodeMPEG2Context          *priv = ctx->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     pic->nb_slices = priv->mb_height;
 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     VAAPIEncodeContext                  *ctx = avctx->priv_data;
 486     VAEncSliceParameterBufferMPEG2   *vslice = slice->codec_slice_params;
 487     VAAPIEncodeMPEG2Context            *priv = ctx->priv_data;
 488     int qp;
 489
 490     vslice->macroblock_address = priv->mb_width * slice->index;
 491     vslice->num_macroblocks    = priv->mb_width;
 492
 493     switch (pic->type) {
 494     case PICTURE_TYPE_IDR:
 495     case PICTURE_TYPE_I:
 496         qp = priv->quant_i;
 497         break;
 498     case PICTURE_TYPE_P:
 499         qp = priv->quant_p;
 500         break;
 501     case PICTURE_TYPE_B:
 502         qp = priv->quant_b;
 503         break;
 504     default:
 505         av_assert0(0 && "invalid picture type");
 506     }
 507
 508     vslice->quantiser_scale_code = qp;
 509     vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||
 510                               pic->type == PICTURE_TYPE_I);
 511
 512     return 0;
 513 }
 514
 515 static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)
 516 {
 517     VAAPIEncodeContext       *ctx = avctx->priv_data;
 518     VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
 519     int err;
 520
 521     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_MPEG2VIDEO, avctx);
 522     if (err < 0)
 523         return err;
 524
 525     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 526     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 527
 528     if (ctx->va_rc_mode == VA_RC_CQP) {
 529         priv->quant_p = av_clip(avctx->global_quality, 1, 31);
 530         if (avctx->i_quant_factor > 0.0)
 531             priv->quant_i = av_clip((avctx->global_quality *
 532                                      avctx->i_quant_factor +
 533                                      avctx->i_quant_offset) + 0.5,
 534                                     1, 31);
 535         else
 536             priv->quant_i = priv->quant_p;
 537         if (avctx->b_quant_factor > 0.0)
 538             priv->quant_b = av_clip((avctx->global_quality *
 539                                      avctx->b_quant_factor +
 540                                      avctx->b_quant_offset) + 0.5,
 541                                     1, 31);
 542         else
 543             priv->quant_b = priv->quant_p;
 544
 545         av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "
 546                "%d / %d / %d for I- / P- / B-frames.\n",
 547                priv->quant_i, priv->quant_p, priv->quant_b);
 548
 549     } else {
 550         av_assert0(0 && "Invalid RC mode.");
 551     }
 552
 553     return 0;
 554 }
 555
 556 static const VAAPIEncodeType vaapi_encode_type_mpeg2 = {
 557     .priv_data_size        = sizeof(VAAPIEncodeMPEG2Context),
 558
 559     .configure             = &vaapi_encode_mpeg2_configure,
 560
 561     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferMPEG2),
 562     .init_sequence_params  = &vaapi_encode_mpeg2_init_sequence_params,
 563
 564     .picture_params_size   = sizeof(VAEncPictureParameterBufferMPEG2),
 565     .init_picture_params   = &vaapi_encode_mpeg2_init_picture_params,
 566
 567     .slice_params_size     = sizeof(VAEncSliceParameterBufferMPEG2),
 568     .init_slice_params     = &vaapi_encode_mpeg2_init_slice_params,
 569
 570     .sequence_header_type  = VAEncPackedHeaderSequence,
 571     .write_sequence_header = &vaapi_encode_mpeg2_write_sequence_header,
 572
 573     .picture_header_type   = VAEncPackedHeaderPicture,
 574     .write_picture_header  = &vaapi_encode_mpeg2_write_picture_header,
 575 };
 576
 577 static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx)
 578 {
 579     VAAPIEncodeContext *ctx = avctx->priv_data;
 580
 581     ctx->codec = &vaapi_encode_type_mpeg2;
 582
 583     switch (avctx->profile) {
 584     case FF_PROFILE_MPEG2_SIMPLE:
 585         ctx->va_profile = VAProfileMPEG2Simple;
 586         break;
 587     case FF_PROFILE_MPEG2_MAIN:
 588         ctx->va_profile = VAProfileMPEG2Main;
 589         break;
 590     case FF_PROFILE_MPEG2_422:
 591         av_log(avctx, AV_LOG_ERROR, "MPEG-2 4:2:2 profile "
 592                "is not supported.\n");
 593         return AVERROR_PATCHWELCOME;
 594     case FF_PROFILE_MPEG2_HIGH:
 595         av_log(avctx, AV_LOG_ERROR, "MPEG-2 high profile "
 596                "is not supported.\n");
 597         return AVERROR_PATCHWELCOME;
 598     case FF_PROFILE_MPEG2_SS:
 599     case FF_PROFILE_MPEG2_SNR_SCALABLE:
 600         av_log(avctx, AV_LOG_ERROR, "MPEG-2 scalable profiles "
 601                "are not supported.\n");
 602         return AVERROR_PATCHWELCOME;
 603     default:
 604         av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 profile %d.\n",
 605                avctx->profile);
 606         return AVERROR(EINVAL);
 607     }
 608     switch (avctx->level) {
 609     case 4: // High
 610     case 6: // High 1440
 611     case 8: // Main
 612     case 10: // Low
 613         break;
 614     default:
 615         av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 level %d.\n",
 616                avctx->level);
 617         return AVERROR(EINVAL);
 618     }
 619
 620     if (avctx->height % 4096 == 0 || avctx->width % 4096 == 0) {
 621         av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support picture "
 622                "height or width divisible by 4096.\n");
 623         return AVERROR(EINVAL);
 624     }
 625
 626     ctx->va_entrypoint = VAEntrypointEncSlice;
 627     ctx->va_rt_format  = VA_RT_FORMAT_YUV420;
 628     ctx->va_rc_mode    = VA_RC_CQP;
 629
 630     ctx->va_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE |
 631                              VA_ENC_PACKED_HEADER_PICTURE;
 632
 633     ctx->surface_width  = FFALIGN(avctx->width,  16);
 634     ctx->surface_height = FFALIGN(avctx->height, 16);
 635
 636     return ff_vaapi_encode_init(avctx);
 637 }
 638
 639 static av_cold int vaapi_encode_mpeg2_close(AVCodecContext *avctx)
 640 {
 641     VAAPIEncodeContext *ctx = avctx->priv_data;
 642     VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
 643
 644     if (priv)
 645         ff_cbs_close(&priv->cbc);
 646
 647     return ff_vaapi_encode_close(avctx);
 648 }
 649
 650 static const AVCodecDefault vaapi_encode_mpeg2_defaults[] = {
 651     { "profile",        "4"   },
 652     { "level",          "4"   },
 653     { "bf",             "1"   },
 654     { "g",              "120" },
 655     { "i_qfactor",      "1.0" },
 656     { "i_qoffset",      "0.0" },
 657     { "b_qfactor",      "1.2" },
 658     { "b_qoffset",      "0.0" },
 659     { "global_quality", "10"  },
 660     { NULL },
 661 };
 662
 663 AVCodec ff_mpeg2_vaapi_encoder = {
 664     .name           = "mpeg2_vaapi",
 665     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 (VAAPI)"),
 666     .type           = AVMEDIA_TYPE_VIDEO,
 667     .id             = AV_CODEC_ID_MPEG2VIDEO,
 668     .priv_data_size = sizeof(VAAPIEncodeContext),
 669     .init           = &vaapi_encode_mpeg2_init,
 670     .encode2        = &ff_vaapi_encode2,
 671     .close          = &vaapi_encode_mpeg2_close,
 672     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
 673     .defaults       = vaapi_encode_mpeg2_defaults,
 674     .pix_fmts = (const enum AVPixelFormat[]) {
 675         AV_PIX_FMT_VAAPI,
 676         AV_PIX_FMT_NONE,
 677     },
 678     .wrapper_name   = "vaapi",
 679 };