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FFmpeg/libavcodec/vaapi_encode_h265.c

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  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 <string.h>

  20. 

  21. #include <va/va.h>

  22. #include <va/va_enc_hevc.h>

  23. 

  24. #include "libavutil/avassert.h"

  25. #include "libavutil/common.h"

  26. #include "libavutil/opt.h"

  27. 

  28. #include "avcodec.h"

  29. #include "cbs.h"

  30. #include "cbs_h265.h"

  31. #include "hevc.h"

  32. #include "internal.h"

  33. #include "put_bits.h"

  34. #include "vaapi_encode.h"

  35. 

  36. 

  37. typedef struct VAAPIEncodeH265Context {

  38.     unsigned int ctu_width;

  39.     unsigned int ctu_height;

  40. 

  41.     int fixed_qp_idr;

  42.     int fixed_qp_p;

  43.     int fixed_qp_b;

  44. 

  45.     H265RawAUD aud;

  46.     H265RawVPS vps;

  47.     H265RawSPS sps;

  48.     H265RawPPS pps;

  49.     H265RawSlice slice;

  50. 

  51.     int64_t last_idr_frame;

  52.     int pic_order_cnt;

  53. 

  54.     int slice_nal_unit;

  55.     int slice_type;

  56.     int pic_type;

  57. 

  58.     CodedBitstreamContext cbc;

  59.     CodedBitstreamFragment current_access_unit;

  60.     int aud_needed;

  61. } VAAPIEncodeH265Context;

  62. 

  63. typedef struct VAAPIEncodeH265Options {

  64.     int qp;

  65.     int aud;

  66. } VAAPIEncodeH265Options;

  67. 

  68. 

  69. static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,

  70.                                                char *data, size_t *data_len,

  71.                                                CodedBitstreamFragment *au)

  72. {

  73.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  74.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  75.     int err;

  76. 

  77.     err = ff_cbs_write_fragment_data(&priv->cbc, au);

  78.     if (err < 0) {

  79.         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");

  80.         return err;

  81.     }

  82. 

  83.     if (*data_len < 8 * au->data_size - au->data_bit_padding) {

  84.         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "

  85.                "%zu < %zu.\n", *data_len,

  86.                8 * au->data_size - au->data_bit_padding);

  87.         return AVERROR(ENOSPC);

  88.     }

  89. 

  90.     memcpy(data, au->data, au->data_size);

  91.     *data_len = 8 * au->data_size - au->data_bit_padding;

  92. 

  93.     return 0;

  94. }

  95. 

  96. static int vaapi_encode_h265_add_nal(AVCodecContext *avctx,

  97.                                      CodedBitstreamFragment *au,

  98.                                      void *nal_unit)

  99. {

  100.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  101.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  102.     H265RawNALUnitHeader *header = nal_unit;

  103.     int err;

  104. 

  105.     err = ff_cbs_insert_unit_content(&priv->cbc, au, -1,

  106.                                      header->nal_unit_type, nal_unit);

  107.     if (err < 0) {

  108.         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "

  109.                "type = %d.\n", header->nal_unit_type);

  110.         return err;

  111.     }

  112. 

  113.     return 0;

  114. }

  115. 

  116. static int vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,

  117.                                                    char *data, size_t *data_len)

  118. {

  119.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  120.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  121.     CodedBitstreamFragment   *au = &priv->current_access_unit;

  122.     int err;

  123. 

  124.     if (priv->aud_needed) {

  125.         err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);

  126.         if (err < 0)

  127.             goto fail;

  128.         priv->aud_needed = 0;

  129.     }

  130. 

  131.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->vps);

  132.     if (err < 0)

  133.         goto fail;

  134. 

  135.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->sps);

  136.     if (err < 0)

  137.         goto fail;

  138. 

  139.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->pps);

  140.     if (err < 0)

  141.         goto fail;

  142. 

  143.     err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);

  144. fail:

  145.     ff_cbs_fragment_uninit(&priv->cbc, au);

  146.     return err;

  147. }

  148. 

  149. static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,

  150.                                                 VAAPIEncodePicture *pic,

  151.                                                 VAAPIEncodeSlice *slice,

  152.                                                 char *data, size_t *data_len)

  153. {

  154.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  155.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  156.     CodedBitstreamFragment   *au = &priv->current_access_unit;

  157.     int err;

  158. 

  159.     if (priv->aud_needed) {

  160.         err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);

  161.         if (err < 0)

  162.             goto fail;

  163.         priv->aud_needed = 0;

  164.     }

  165. 

  166.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->slice);

  167.     if (err < 0)

  168.         goto fail;

  169. 

  170.     err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);

  171. fail:

  172.     ff_cbs_fragment_uninit(&priv->cbc, au);

  173.     return err;

  174. }

  175. 

  176. static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)

  177. {

  178.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  179.     VAAPIEncodeH265Context           *priv = ctx->priv_data;

  180.     H265RawVPS                        *vps = &priv->vps;

  181.     H265RawSPS                        *sps = &priv->sps;

  182.     H265RawPPS                        *pps = &priv->pps;

  183.     H265RawVUI                        *vui = &sps->vui;

  184.     VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;

  185.     VAEncPictureParameterBufferHEVC  *vpic = ctx->codec_picture_params;

  186.     int i;

  187. 

  188.     memset(&priv->current_access_unit, 0,

  189.            sizeof(priv->current_access_unit));

  190. 

  191.     memset(vps, 0, sizeof(*vps));

  192.     memset(sps, 0, sizeof(*sps));

  193.     memset(pps, 0, sizeof(*pps));

  194. 

  195. 

  196.     // VPS

  197. 

  198.     vps->nal_unit_header = (H265RawNALUnitHeader) {

  199.         .nal_unit_type         = HEVC_NAL_VPS,

  200.         .nuh_layer_id          = 0,

  201.         .nuh_temporal_id_plus1 = 1,

  202.     };

  203. 

  204.     vps->vps_video_parameter_set_id = 0;

  205. 

  206.     vps->vps_base_layer_internal_flag  = 1;

  207.     vps->vps_base_layer_available_flag = 1;

  208.     vps->vps_max_layers_minus1         = 0;

  209.     vps->vps_max_sub_layers_minus1     = 0;

  210.     vps->vps_temporal_id_nesting_flag  = 1;

  211. 

  212.     vps->profile_tier_level = (H265RawProfileTierLevel) {

  213.         .general_profile_space = 0,

  214.         .general_profile_idc   = avctx->profile,

  215.         .general_tier_flag     = 0,

  216. 

  217.         .general_progressive_source_flag    = 1,

  218.         .general_interlaced_source_flag     = 0,

  219.         .general_non_packed_constraint_flag = 1,

  220.         .general_frame_only_constraint_flag = 1,

  221. 

  222.         .general_level_idc     = avctx->level,

  223.     };

  224.     vps->profile_tier_level.general_profile_compatibility_flag[avctx->profile & 31] = 1;

  225. 

  226.     vps->vps_sub_layer_ordering_info_present_flag = 0;

  227.     vps->vps_max_dec_pic_buffering_minus1[0]      = (ctx->b_per_p > 0) + 1;

  228.     vps->vps_max_num_reorder_pics[0]              = (ctx->b_per_p > 0);

  229.     vps->vps_max_latency_increase_plus1[0]        = 0;

  230. 

  231.     vps->vps_max_layer_id             = 0;

  232.     vps->vps_num_layer_sets_minus1    = 0;

  233.     vps->layer_id_included_flag[0][0] = 1;

  234. 

  235.     vps->vps_timing_info_present_flag = 1;

  236.     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {

  237.         vps->vps_num_units_in_tick  = avctx->framerate.den;

  238.         vps->vps_time_scale         = avctx->framerate.num;

  239.         vps->vps_poc_proportional_to_timing_flag = 1;

  240.         vps->vps_num_ticks_poc_diff_one_minus1   = 0;

  241.     } else {

  242.         vps->vps_num_units_in_tick  = avctx->time_base.num;

  243.         vps->vps_time_scale         = avctx->time_base.den;

  244.         vps->vps_poc_proportional_to_timing_flag = 0;

  245.     }

  246.     vps->vps_num_hrd_parameters = 0;

  247. 

  248. 

  249.     // SPS

  250. 

  251.     sps->nal_unit_header = (H265RawNALUnitHeader) {

  252.         .nal_unit_type         = HEVC_NAL_SPS,

  253.         .nuh_layer_id          = 0,

  254.         .nuh_temporal_id_plus1 = 1,

  255.     };

  256. 

  257.     sps->sps_video_parameter_set_id = vps->vps_video_parameter_set_id;

  258. 

  259.     sps->sps_max_sub_layers_minus1    = vps->vps_max_sub_layers_minus1;

  260.     sps->sps_temporal_id_nesting_flag = vps->vps_temporal_id_nesting_flag;

  261. 

  262.     sps->profile_tier_level = vps->profile_tier_level;

  263. 

  264.     sps->sps_seq_parameter_set_id = 0;

  265. 

  266.     sps->chroma_format_idc          = 1; // YUV 4:2:0.

  267.     sps->separate_colour_plane_flag = 0;

  268. 

  269.     sps->pic_width_in_luma_samples  = ctx->surface_width;

  270.     sps->pic_height_in_luma_samples = ctx->surface_height;

  271. 

  272.     if (avctx->width  != ctx->surface_width ||

  273.         avctx->height != ctx->surface_height) {

  274.         sps->conformance_window_flag = 1;

  275.         sps->conf_win_left_offset   = 0;

  276.         sps->conf_win_right_offset  =

  277.             (ctx->surface_width - avctx->width) / 2;

  278.         sps->conf_win_top_offset    = 0;

  279.         sps->conf_win_bottom_offset =

  280.             (ctx->surface_height - avctx->height) / 2;

  281.     } else {

  282.         sps->conformance_window_flag = 0;

  283.     }

  284. 

  285.     sps->bit_depth_luma_minus8 =

  286.         avctx->profile == FF_PROFILE_HEVC_MAIN_10 ? 2 : 0;

  287.     sps->bit_depth_chroma_minus8 = sps->bit_depth_luma_minus8;

  288. 

  289.     sps->log2_max_pic_order_cnt_lsb_minus4 = 8;

  290. 

  291.     sps->sps_sub_layer_ordering_info_present_flag =

  292.         vps->vps_sub_layer_ordering_info_present_flag;

  293.     for (i = 0; i <= sps->sps_max_sub_layers_minus1; i++) {

  294.         sps->sps_max_dec_pic_buffering_minus1[i] =

  295.             vps->vps_max_dec_pic_buffering_minus1[i];

  296.         sps->sps_max_num_reorder_pics[i] =

  297.             vps->vps_max_num_reorder_pics[i];

  298.         sps->sps_max_latency_increase_plus1[i] =

  299.             vps->vps_max_latency_increase_plus1[i];

  300.     }

  301. 

  302.     // These have to come from the capabilities of the encoder.  We have no

  303.     // way to query them, so just hardcode parameters which work on the Intel

  304.     // driver.

  305.     // CTB size from 8x8 to 32x32.

  306.     sps->log2_min_luma_coding_block_size_minus3   = 0;

  307.     sps->log2_diff_max_min_luma_coding_block_size = 2;

  308.     // Transform size from 4x4 to 32x32.

  309.     sps->log2_min_luma_transform_block_size_minus2   = 0;

  310.     sps->log2_diff_max_min_luma_transform_block_size = 3;

  311.     // Full transform hierarchy allowed (2-5).

  312.     sps->max_transform_hierarchy_depth_inter = 3;

  313.     sps->max_transform_hierarchy_depth_intra = 3;

  314.     // AMP works.

  315.     sps->amp_enabled_flag = 1;

  316.     // SAO and temporal MVP do not work.

  317.     sps->sample_adaptive_offset_enabled_flag = 0;

  318.     sps->sps_temporal_mvp_enabled_flag       = 0;

  319. 

  320.     sps->pcm_enabled_flag = 0;

  321. 

  322.     // STRPSs should ideally be here rather than defined individually in

  323.     // each slice, but the structure isn't completely fixed so for now

  324.     // don't bother.

  325.     sps->num_short_term_ref_pic_sets     = 0;

  326.     sps->long_term_ref_pics_present_flag = 0;

  327. 

  328.     sps->vui_parameters_present_flag = 1;

  329. 

  330.     if (avctx->sample_aspect_ratio.num != 0 &&

  331.         avctx->sample_aspect_ratio.den != 0) {

  332.         static const AVRational sar_idc[] = {

  333.             {   0,  0 },

  334.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  335.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  336.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  337.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  338.         };

  339.         int i;

  340.         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {

  341.             if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&

  342.                 avctx->sample_aspect_ratio.den == sar_idc[i].den) {

  343.                 vui->aspect_ratio_idc = i;

  344.                 break;

  345.             }

  346.         }

  347.         if (i >= FF_ARRAY_ELEMS(sar_idc)) {

  348.             vui->aspect_ratio_idc = 255;

  349.             vui->sar_width  = avctx->sample_aspect_ratio.num;

  350.             vui->sar_height = avctx->sample_aspect_ratio.den;

  351.         }

  352.         vui->aspect_ratio_info_present_flag = 1;

  353.     }

  354. 

  355.     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||

  356.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  357.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  358.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  359.         vui->video_signal_type_present_flag = 1;

  360.         vui->video_format      = 5; // Unspecified.

  361.         vui->video_full_range_flag =

  362.             avctx->color_range == AVCOL_RANGE_JPEG;

  363. 

  364.         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  365.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  366.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  367.             vui->colour_description_present_flag = 1;

  368.             vui->colour_primaries         = avctx->color_primaries;

  369.             vui->transfer_characteristics = avctx->color_trc;

  370.             vui->matrix_coefficients      = avctx->colorspace;

  371.         }

  372.     } else {

  373.         vui->video_format             = 5;

  374.         vui->video_full_range_flag    = 0;

  375.         vui->colour_primaries         = avctx->color_primaries;

  376.         vui->transfer_characteristics = avctx->color_trc;

  377.         vui->matrix_coefficients      = avctx->colorspace;

  378.     }

  379. 

  380.     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {

  381.         vui->chroma_loc_info_present_flag = 1;

  382.         vui->chroma_sample_loc_type_top_field    =

  383.         vui->chroma_sample_loc_type_bottom_field =

  384.             avctx->chroma_sample_location - 1;

  385.     }

  386. 

  387.     vui->vui_timing_info_present_flag        = 1;

  388.     vui->vui_num_units_in_tick               = vps->vps_num_units_in_tick;

  389.     vui->vui_time_scale                      = vps->vps_time_scale;

  390.     vui->vui_poc_proportional_to_timing_flag = vps->vps_poc_proportional_to_timing_flag;

  391.     vui->vui_num_ticks_poc_diff_one_minus1   = vps->vps_num_ticks_poc_diff_one_minus1;

  392.     vui->vui_hrd_parameters_present_flag     = 0;

  393. 

  394.     vui->bitstream_restriction_flag    = 1;

  395.     vui->motion_vectors_over_pic_boundaries_flag = 1;

  396.     vui->restricted_ref_pic_lists_flag = 1;

  397.     vui->max_bytes_per_pic_denom       = 0;

  398.     vui->max_bits_per_min_cu_denom     = 0;

  399.     vui->log2_max_mv_length_horizontal = 15;

  400.     vui->log2_max_mv_length_vertical   = 15;

  401. 

  402. 

  403.     // PPS

  404. 

  405.     pps->nal_unit_header = (H265RawNALUnitHeader) {

  406.         .nal_unit_type         = HEVC_NAL_PPS,

  407.         .nuh_layer_id          = 0,

  408.         .nuh_temporal_id_plus1 = 1,

  409.     };

  410. 

  411.     pps->pps_pic_parameter_set_id = 0;

  412.     pps->pps_seq_parameter_set_id = sps->sps_seq_parameter_set_id;

  413. 

  414.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  415.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  416. 

  417.     pps->init_qp_minus26 = priv->fixed_qp_idr - 26;

  418. 

  419.     pps->cu_qp_delta_enabled_flag = (ctx->va_rc_mode != VA_RC_CQP);

  420.     pps->diff_cu_qp_delta_depth   = 0;

  421. 

  422.     pps->pps_loop_filter_across_slices_enabled_flag = 1;

  423. 

  424. 

  425.     // Fill VAAPI parameter buffers.

  426. 

  427.     *vseq = (VAEncSequenceParameterBufferHEVC) {

  428.         .general_profile_idc = vps->profile_tier_level.general_profile_idc,

  429.         .general_level_idc   = vps->profile_tier_level.general_level_idc,

  430.         .general_tier_flag   = vps->profile_tier_level.general_tier_flag,

  431. 

  432.         .intra_period     = avctx->gop_size,

  433.         .intra_idr_period = avctx->gop_size,

  434.         .ip_period        = ctx->b_per_p + 1,

  435.         .bits_per_second   = avctx->bit_rate,

  436. 

  437.         .pic_width_in_luma_samples  = sps->pic_width_in_luma_samples,

  438.         .pic_height_in_luma_samples = sps->pic_height_in_luma_samples,

  439. 

  440.         .seq_fields.bits = {

  441.             .chroma_format_idc             = sps->chroma_format_idc,

  442.             .separate_colour_plane_flag    = sps->separate_colour_plane_flag,

  443.             .bit_depth_luma_minus8         = sps->bit_depth_luma_minus8,

  444.             .bit_depth_chroma_minus8       = sps->bit_depth_chroma_minus8,

  445.             .scaling_list_enabled_flag     = sps->scaling_list_enabled_flag,

  446.             .strong_intra_smoothing_enabled_flag =

  447.                 sps->strong_intra_smoothing_enabled_flag,

  448.             .amp_enabled_flag              = sps->amp_enabled_flag,

  449.             .sample_adaptive_offset_enabled_flag =

  450.                 sps->sample_adaptive_offset_enabled_flag,

  451.             .pcm_enabled_flag              = sps->pcm_enabled_flag,

  452.             .pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,

  453.             .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,

  454.         },

  455. 

  456.         .log2_min_luma_coding_block_size_minus3 =

  457.             sps->log2_min_luma_coding_block_size_minus3,

  458.         .log2_diff_max_min_luma_coding_block_size =

  459.             sps->log2_diff_max_min_luma_coding_block_size,

  460.         .log2_min_transform_block_size_minus2 =

  461.             sps->log2_min_luma_transform_block_size_minus2,

  462.         .log2_diff_max_min_transform_block_size =

  463.             sps->log2_diff_max_min_luma_transform_block_size,

  464.         .max_transform_hierarchy_depth_inter =

  465.             sps->max_transform_hierarchy_depth_inter,

  466.         .max_transform_hierarchy_depth_intra =

  467.             sps->max_transform_hierarchy_depth_intra,

  468. 

  469.         .pcm_sample_bit_depth_luma_minus1 =

  470.             sps->pcm_sample_bit_depth_luma_minus1,

  471.         .pcm_sample_bit_depth_chroma_minus1 =

  472.             sps->pcm_sample_bit_depth_chroma_minus1,

  473.         .log2_min_pcm_luma_coding_block_size_minus3 =

  474.             sps->log2_min_pcm_luma_coding_block_size_minus3,

  475.         .log2_max_pcm_luma_coding_block_size_minus3 =

  476.             sps->log2_min_pcm_luma_coding_block_size_minus3 +

  477.             sps->log2_diff_max_min_pcm_luma_coding_block_size,

  478. 

  479.         .vui_parameters_present_flag = 0,

  480.     };

  481. 

  482.     *vpic = (VAEncPictureParameterBufferHEVC) {

  483.         .decoded_curr_pic = {

  484.             .picture_id = VA_INVALID_ID,

  485.             .flags      = VA_PICTURE_HEVC_INVALID,

  486.         },

  487. 

  488.         .coded_buf = VA_INVALID_ID,

  489. 

  490.         .collocated_ref_pic_index = 0xff,

  491. 

  492.         .last_picture = 0,

  493. 

  494.         .pic_init_qp            = pps->init_qp_minus26 + 26,

  495.         .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,

  496.         .pps_cb_qp_offset       = pps->pps_cb_qp_offset,

  497.         .pps_cr_qp_offset       = pps->pps_cr_qp_offset,

  498. 

  499.         .num_tile_columns_minus1 = pps->num_tile_columns_minus1,

  500.         .num_tile_rows_minus1    = pps->num_tile_rows_minus1,

  501. 

  502.         .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,

  503.         .ctu_max_bitsize_allowed          = 0,

  504. 

  505.         .num_ref_idx_l0_default_active_minus1 =

  506.             pps->num_ref_idx_l0_default_active_minus1,

  507.         .num_ref_idx_l1_default_active_minus1 =

  508.             pps->num_ref_idx_l1_default_active_minus1,

  509. 

  510.         .slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,

  511. 

  512.         .pic_fields.bits = {

  513.             .sign_data_hiding_enabled_flag  = pps->sign_data_hiding_enabled_flag,

  514.             .constrained_intra_pred_flag    = pps->constrained_intra_pred_flag,

  515.             .transform_skip_enabled_flag    = pps->transform_skip_enabled_flag,

  516.             .cu_qp_delta_enabled_flag       = pps->cu_qp_delta_enabled_flag,

  517.             .weighted_pred_flag             = pps->weighted_pred_flag,

  518.             .weighted_bipred_flag           = pps->weighted_bipred_flag,

  519.             .transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,

  520.             .tiles_enabled_flag             = pps->tiles_enabled_flag,

  521.             .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,

  522.             .loop_filter_across_tiles_enabled_flag =

  523.                 pps->loop_filter_across_tiles_enabled_flag,

  524.             .scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |

  525.                                                pps->pps_scaling_list_data_present_flag),

  526.             .screen_content_flag            = 0,

  527.             .enable_gpu_weighted_prediction = 0,

  528.             .no_output_of_prior_pics_flag   = 0,

  529.         },

  530.     };

  531. 

  532.     return 0;

  533. }

  534. 

  535. static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,

  536.                                                  VAAPIEncodePicture *pic)

  537. {

  538.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  539.     VAAPIEncodeH265Context          *priv = ctx->priv_data;

  540.     VAAPIEncodeH265Options           *opt = ctx->codec_options;

  541.     VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;

  542.     int i;

  543. 

  544.     if (pic->type == PICTURE_TYPE_IDR) {

  545.         av_assert0(pic->display_order == pic->encode_order);

  546. 

  547.         priv->last_idr_frame = pic->display_order;

  548. 

  549.         priv->slice_nal_unit = HEVC_NAL_IDR_W_RADL;

  550.         priv->slice_type     = HEVC_SLICE_I;

  551.         priv->pic_type       = 0;

  552.     } else {

  553.         av_assert0(pic->encode_order > priv->last_idr_frame);

  554. 

  555.         if (pic->type == PICTURE_TYPE_I) {

  556.             priv->slice_nal_unit = HEVC_NAL_CRA_NUT;

  557.             priv->slice_type     = HEVC_SLICE_I;

  558.             priv->pic_type       = 0;

  559.         } else if (pic->type == PICTURE_TYPE_P) {

  560.             av_assert0(pic->refs[0]);

  561.             priv->slice_nal_unit = HEVC_NAL_TRAIL_R;

  562.             priv->slice_type     = HEVC_SLICE_P;

  563.             priv->pic_type       = 1;

  564.         } else {

  565.             av_assert0(pic->refs[0] && pic->refs[1]);

  566.             if (pic->refs[1]->type == PICTURE_TYPE_I)

  567.                 priv->slice_nal_unit = HEVC_NAL_RASL_N;

  568.             else

  569.                 priv->slice_nal_unit = HEVC_NAL_TRAIL_N;

  570.             priv->slice_type = HEVC_SLICE_B;

  571.             priv->pic_type   = 2;

  572.         }

  573.     }

  574.     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;

  575. 

  576.     if (opt->aud) {

  577.         priv->aud_needed = 1;

  578.         priv->aud.nal_unit_header = (H265RawNALUnitHeader) {

  579.             .nal_unit_type         = HEVC_NAL_AUD,

  580.             .nuh_layer_id          = 0,

  581.             .nuh_temporal_id_plus1 = 1,

  582.         };

  583.         priv->aud.pic_type = priv->pic_type;

  584.     } else {

  585.         priv->aud_needed = 0;

  586.     }

  587. 

  588.     vpic->decoded_curr_pic = (VAPictureHEVC) {

  589.         .picture_id    = pic->recon_surface,

  590.         .pic_order_cnt = priv->pic_order_cnt,

  591.         .flags         = 0,

  592.     };

  593. 

  594.     for (i = 0; i < pic->nb_refs; i++) {

  595.         VAAPIEncodePicture *ref = pic->refs[i];

  596.         av_assert0(ref && ref->encode_order < pic->encode_order);

  597. 

  598.         vpic->reference_frames[i] = (VAPictureHEVC) {

  599.             .picture_id    = ref->recon_surface,

  600.             .pic_order_cnt = ref->display_order - priv->last_idr_frame,

  601.             .flags = (ref->display_order < pic->display_order ?

  602.                       VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |

  603.                      (ref->display_order > pic->display_order ?

  604.                       VA_PICTURE_HEVC_RPS_ST_CURR_AFTER  : 0),

  605.         };

  606.     }

  607.     for (; i < FF_ARRAY_ELEMS(vpic->reference_frames); i++) {

  608.         vpic->reference_frames[i] = (VAPictureHEVC) {

  609.             .picture_id = VA_INVALID_ID,

  610.             .flags      = VA_PICTURE_HEVC_INVALID,

  611.         };

  612.     }

  613. 

  614.     vpic->coded_buf = pic->output_buffer;

  615. 

  616.     vpic->nal_unit_type = priv->slice_nal_unit;

  617. 

  618.     switch (pic->type) {

  619.     case PICTURE_TYPE_IDR:

  620.         vpic->pic_fields.bits.idr_pic_flag       = 1;

  621.         vpic->pic_fields.bits.coding_type        = 1;

  622.         vpic->pic_fields.bits.reference_pic_flag = 1;

  623.         break;

  624.     case PICTURE_TYPE_I:

  625.         vpic->pic_fields.bits.idr_pic_flag       = 0;

  626.         vpic->pic_fields.bits.coding_type        = 1;

  627.         vpic->pic_fields.bits.reference_pic_flag = 1;

  628.         break;

  629.     case PICTURE_TYPE_P:

  630.         vpic->pic_fields.bits.idr_pic_flag       = 0;

  631.         vpic->pic_fields.bits.coding_type        = 2;

  632.         vpic->pic_fields.bits.reference_pic_flag = 1;

  633.         break;

  634.     case PICTURE_TYPE_B:

  635.         vpic->pic_fields.bits.idr_pic_flag       = 0;

  636.         vpic->pic_fields.bits.coding_type        = 3;

  637.         vpic->pic_fields.bits.reference_pic_flag = 0;

  638.         break;

  639.     default:

  640.         av_assert0(0 && "invalid picture type");

  641.     }

  642. 

  643.     pic->nb_slices = 1;

  644. 

  645.     return 0;

  646. }

  647. 

  648. static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,

  649.                                                VAAPIEncodePicture *pic,

  650.                                                VAAPIEncodeSlice *slice)

  651. {

  652.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  653.     VAAPIEncodeH265Context           *priv = ctx->priv_data;

  654.     const H265RawSPS                  *sps = &priv->sps;

  655.     const H265RawPPS                  *pps = &priv->pps;

  656.     H265RawSliceHeader                 *sh = &priv->slice.header;

  657.     VAEncPictureParameterBufferHEVC  *vpic = pic->codec_picture_params;

  658.     VAEncSliceParameterBufferHEVC  *vslice = slice->codec_slice_params;

  659.     int i;

  660. 

  661.     sh->nal_unit_header = (H265RawNALUnitHeader) {

  662.         .nal_unit_type         = priv->slice_nal_unit,

  663.         .nuh_layer_id          = 0,

  664.         .nuh_temporal_id_plus1 = 1,

  665.     };

  666. 

  667.     sh->slice_pic_parameter_set_id      = pps->pps_pic_parameter_set_id;

  668. 

  669.     // Currently we only support one slice per frame.

  670.     sh->first_slice_segment_in_pic_flag = 1;

  671.     sh->slice_segment_address           = 0;

  672. 

  673.     sh->slice_type = priv->slice_type;

  674. 

  675.     sh->slice_pic_order_cnt_lsb = priv->pic_order_cnt &

  676.         (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;

  677. 

  678.     if (pic->type != PICTURE_TYPE_IDR) {

  679.         H265RawSTRefPicSet *rps;

  680.         VAAPIEncodePicture *st;

  681.         int used;

  682. 

  683.         sh->short_term_ref_pic_set_sps_flag = 0;

  684. 

  685.         rps = &sh->short_term_ref_pic_set;

  686.         memset(rps, 0, sizeof(*rps));

  687. 

  688.         for (st = ctx->pic_start; st; st = st->next) {

  689.             if (st->encode_order >= pic->encode_order) {

  690.                 // Not yet in DPB.

  691.                 continue;

  692.             }

  693.             used = 0;

  694.             for (i = 0; i < pic->nb_refs; i++) {

  695.                 if (pic->refs[i] == st)

  696.                     used = 1;

  697.             }

  698.             if (!used) {

  699.                 // Usually each picture always uses all of the others in the

  700.                 // DPB as references.  The one case we have to treat here is

  701.                 // a non-IDR IRAP picture, which may need to hold unused

  702.                 // references across itself to be used for the decoding of

  703.                 // following RASL pictures.  This looks for such an RASL

  704.                 // picture, and keeps the reference if there is one.

  705.                 VAAPIEncodePicture *rp;

  706.                 for (rp = ctx->pic_start; rp; rp = rp->next) {

  707.                     if (rp->encode_order < pic->encode_order)

  708.                         continue;

  709.                     if (rp->type != PICTURE_TYPE_B)

  710.                         continue;

  711.                     if (rp->refs[0] == st && rp->refs[1] == pic)

  712.                         break;

  713.                 }

  714.                 if (!rp)

  715.                     continue;

  716.             }

  717.             // This only works for one instance of each (delta_poc_sN_minus1

  718.             // is relative to the previous frame in the list, not relative to

  719.             // the current frame directly).

  720.             if (st->display_order < pic->display_order) {

  721.                 rps->delta_poc_s0_minus1[rps->num_negative_pics] =

  722.                     pic->display_order - st->display_order - 1;

  723.                 rps->used_by_curr_pic_s0_flag[rps->num_negative_pics] = used;

  724.                 ++rps->num_negative_pics;

  725.             } else {

  726.                 rps->delta_poc_s1_minus1[rps->num_positive_pics] =

  727.                     st->display_order - pic->display_order - 1;

  728.                 rps->used_by_curr_pic_s1_flag[rps->num_positive_pics] = used;

  729.                 ++rps->num_positive_pics;

  730.             }

  731.         }

  732. 

  733.         sh->num_long_term_sps  = 0;

  734.         sh->num_long_term_pics = 0;

  735. 

  736.         sh->slice_temporal_mvp_enabled_flag =

  737.             sps->sps_temporal_mvp_enabled_flag;

  738.         if (sh->slice_temporal_mvp_enabled_flag) {

  739.             sh->collocated_from_l0_flag = sh->slice_type == HEVC_SLICE_B;

  740.             sh->collocated_ref_idx      = 0;

  741.         }

  742. 

  743.         sh->num_ref_idx_active_override_flag = 0;

  744.         sh->num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1;

  745.         sh->num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1;

  746.     }

  747. 

  748.     sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =

  749.         sps->sample_adaptive_offset_enabled_flag;

  750. 

  751.     if (pic->type == PICTURE_TYPE_B)

  752.         sh->slice_qp_delta = priv->fixed_qp_b - (pps->init_qp_minus26 + 26);

  753.     else if (pic->type == PICTURE_TYPE_P)

  754.         sh->slice_qp_delta = priv->fixed_qp_p - (pps->init_qp_minus26 + 26);

  755.     else

  756.         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->init_qp_minus26 + 26);

  757. 

  758. 

  759.     *vslice = (VAEncSliceParameterBufferHEVC) {

  760.         .slice_segment_address = sh->slice_segment_address,

  761.         .num_ctu_in_slice      = priv->ctu_width * priv->ctu_height,

  762. 

  763.         .slice_type                 = sh->slice_type,

  764.         .slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,

  765. 

  766.         .num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,

  767.         .num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,

  768.         .ref_pic_list0[0]             = vpic->reference_frames[0],

  769.         .ref_pic_list1[0]             = vpic->reference_frames[1],

  770. 

  771.         .luma_log2_weight_denom         = sh->luma_log2_weight_denom,

  772.         .delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,

  773. 

  774.         .max_num_merge_cand = 5 - sh->five_minus_max_num_merge_cand,

  775. 

  776.         .slice_qp_delta     = sh->slice_qp_delta,

  777.         .slice_cb_qp_offset = sh->slice_cb_qp_offset,

  778.         .slice_cr_qp_offset = sh->slice_cr_qp_offset,

  779. 

  780.         .slice_beta_offset_div2 = sh->slice_beta_offset_div2,

  781.         .slice_tc_offset_div2   = sh->slice_tc_offset_div2,

  782. 

  783.         .slice_fields.bits = {

  784.             .last_slice_of_pic_flag       = 1,

  785.             .dependent_slice_segment_flag = sh->dependent_slice_segment_flag,

  786.             .colour_plane_id              = sh->colour_plane_id,

  787.             .slice_temporal_mvp_enabled_flag =

  788.                 sh->slice_temporal_mvp_enabled_flag,

  789.             .slice_sao_luma_flag          = sh->slice_sao_luma_flag,

  790.             .slice_sao_chroma_flag        = sh->slice_sao_chroma_flag,

  791.             .num_ref_idx_active_override_flag =

  792.                 sh->num_ref_idx_active_override_flag,

  793.             .mvd_l1_zero_flag             = sh->mvd_l1_zero_flag,

  794.             .cabac_init_flag              = sh->cabac_init_flag,

  795.             .slice_deblocking_filter_disabled_flag =

  796.                 sh->slice_deblocking_filter_disabled_flag,

  797.             .slice_loop_filter_across_slices_enabled_flag =

  798.                 sh->slice_loop_filter_across_slices_enabled_flag,

  799.             .collocated_from_l0_flag      = sh->collocated_from_l0_flag,

  800.         },

  801.     };

  802. 

  803. 

  804.     return 0;

  805. }

  806. 

  807. static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)

  808. {

  809.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  810.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  811.     VAAPIEncodeH265Options  *opt = ctx->codec_options;

  812.     int err;

  813. 

  814.     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);

  815.     if (err < 0)

  816.         return err;

  817. 

  818.     priv->ctu_width     = FFALIGN(ctx->surface_width,  32) / 32;

  819.     priv->ctu_height    = FFALIGN(ctx->surface_height, 32) / 32;

  820. 

  821.     av_log(avctx, AV_LOG_VERBOSE, "Input %ux%u -> Surface %ux%u -> CTU %ux%u.\n",

  822.            avctx->width, avctx->height, ctx->surface_width,

  823.            ctx->surface_height, priv->ctu_width, priv->ctu_height);

  824. 

  825.     if (ctx->va_rc_mode == VA_RC_CQP) {

  826.         priv->fixed_qp_p = opt->qp;

  827.         if (avctx->i_quant_factor > 0.0)

  828.             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +

  829.                                         avctx->i_quant_offset) + 0.5);

  830.         else

  831.             priv->fixed_qp_idr = priv->fixed_qp_p;

  832.         if (avctx->b_quant_factor > 0.0)

  833.             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +

  834.                                       avctx->b_quant_offset) + 0.5);

  835.         else

  836.             priv->fixed_qp_b = priv->fixed_qp_p;

  837. 

  838.         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "

  839.                "%d / %d / %d for IDR- / P- / B-frames.\n",

  840.                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);

  841. 

  842.     } else if (ctx->va_rc_mode == VA_RC_CBR) {

  843.         // These still need to be  set for pic_init_qp/slice_qp_delta.

  844.         priv->fixed_qp_idr = 30;

  845.         priv->fixed_qp_p   = 30;

  846.         priv->fixed_qp_b   = 30;

  847. 

  848.         av_log(avctx, AV_LOG_DEBUG, "Using constant-bitrate = %d bps.\n",

  849.                avctx->bit_rate);

  850. 

  851.     } else {

  852.         av_assert0(0 && "Invalid RC mode.");

  853.     }

  854. 

  855.     return 0;

  856. }

  857. 

  858. static const VAAPIEncodeType vaapi_encode_type_h265 = {

  859.     .priv_data_size        = sizeof(VAAPIEncodeH265Context),

  860. 

  861.     .configure             = &vaapi_encode_h265_configure,

  862. 

  863.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferHEVC),

  864.     .init_sequence_params  = &vaapi_encode_h265_init_sequence_params,

  865. 

  866.     .picture_params_size   = sizeof(VAEncPictureParameterBufferHEVC),

  867.     .init_picture_params   = &vaapi_encode_h265_init_picture_params,

  868. 

  869.     .slice_params_size     = sizeof(VAEncSliceParameterBufferHEVC),

  870.     .init_slice_params     = &vaapi_encode_h265_init_slice_params,

  871. 

  872.     .sequence_header_type  = VAEncPackedHeaderSequence,

  873.     .write_sequence_header = &vaapi_encode_h265_write_sequence_header,

  874. 

  875.     .slice_header_type     = VAEncPackedHeaderHEVC_Slice,

  876.     .write_slice_header    = &vaapi_encode_h265_write_slice_header,

  877. };

  878. 

  879. static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)

  880. {

  881.     VAAPIEncodeContext *ctx = avctx->priv_data;

  882. 

  883.     ctx->codec = &vaapi_encode_type_h265;

  884. 

  885.     switch (avctx->profile) {

  886.     case FF_PROFILE_HEVC_MAIN:

  887.     case FF_PROFILE_UNKNOWN:

  888.         ctx->va_profile = VAProfileHEVCMain;

  889.         ctx->va_rt_format = VA_RT_FORMAT_YUV420;

  890.         break;

  891.     case FF_PROFILE_HEVC_MAIN_10:

  892. #ifdef VA_RT_FORMAT_YUV420_10BPP

  893.         ctx->va_profile = VAProfileHEVCMain10;

  894.         ctx->va_rt_format = VA_RT_FORMAT_YUV420_10BPP;

  895.         break;

  896. #else

  897.         av_log(avctx, AV_LOG_ERROR, "10-bit encoding is not "

  898.                "supported with this VAAPI version.\n");

  899.         return AVERROR(ENOSYS);

  900. #endif

  901.     default:

  902.         av_log(avctx, AV_LOG_ERROR, "Unknown H.265 profile %d.\n",

  903.                avctx->profile);

  904.         return AVERROR(EINVAL);

  905.     }

  906.     ctx->va_entrypoint = VAEntrypointEncSlice;

  907. 

  908.     if (avctx->bit_rate > 0)

  909.         ctx->va_rc_mode = VA_RC_CBR;

  910.     else

  911.         ctx->va_rc_mode = VA_RC_CQP;

  912. 

  913.     ctx->va_packed_headers =

  914.         VA_ENC_PACKED_HEADER_SEQUENCE | // VPS, SPS and PPS.

  915.         VA_ENC_PACKED_HEADER_SLICE;     // Slice headers.

  916. 

  917.     ctx->surface_width  = FFALIGN(avctx->width,  16);

  918.     ctx->surface_height = FFALIGN(avctx->height, 16);

  919. 

  920.     return ff_vaapi_encode_init(avctx);

  921. }

  922. 

  923. static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)

  924. {

  925.     VAAPIEncodeContext *ctx = avctx->priv_data;

  926.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  927. 

  928.     if (priv)

  929.         ff_cbs_close(&priv->cbc);

  930. 

  931.     return ff_vaapi_encode_close(avctx);

  932. }

  933. 

  934. #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \

  935.                    offsetof(VAAPIEncodeH265Options, x))

  936. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  937. static const AVOption vaapi_encode_h265_options[] = {

  938.     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",

  939.       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, 52, FLAGS },

  940. 

  941.     { "aud", "Include AUD",

  942.       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

  943. 

  944.     { NULL },

  945. };

  946. 

  947. static const AVCodecDefault vaapi_encode_h265_defaults[] = {

  948.     { "profile",        "1"   },

  949.     { "level",          "51"  },

  950.     { "b",              "0"   },

  951.     { "bf",             "2"   },

  952.     { "g",              "120" },

  953.     { "i_qfactor",      "1.0" },

  954.     { "i_qoffset",      "0.0" },

  955.     { "b_qfactor",      "1.2" },

  956.     { "b_qoffset",      "0.0" },

  957.     { NULL },

  958. };

  959. 

  960. static const AVClass vaapi_encode_h265_class = {

  961.     .class_name = "h265_vaapi",

  962.     .item_name  = av_default_item_name,

  963.     .option     = vaapi_encode_h265_options,

  964.     .version    = LIBAVUTIL_VERSION_INT,

  965. };

  966. 

  967. AVCodec ff_hevc_vaapi_encoder = {

  968.     .name           = "hevc_vaapi",

  969.     .long_name      = NULL_IF_CONFIG_SMALL("H.265/HEVC (VAAPI)"),

  970.     .type           = AVMEDIA_TYPE_VIDEO,

  971.     .id             = AV_CODEC_ID_HEVC,

  972.     .priv_data_size = (sizeof(VAAPIEncodeContext) +

  973.                        sizeof(VAAPIEncodeH265Options)),

  974.     .init           = &vaapi_encode_h265_init,

  975.     .encode2        = &ff_vaapi_encode2,

  976.     .close          = &vaapi_encode_h265_close,

  977.     .priv_class     = &vaapi_encode_h265_class,

  978.     .capabilities   = AV_CODEC_CAP_DELAY,

  979.     .defaults       = vaapi_encode_h265_defaults,

  980.     .pix_fmts = (const enum AVPixelFormat[]) {

  981.         AV_PIX_FMT_VAAPI,

  982.         AV_PIX_FMT_NONE,

  983.     },

  984. };