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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.     H265RawVPS vps;

  46.     H265RawSPS sps;

  47.     H265RawPPS pps;

  48.     H265RawSlice slice;

  49. 

  50.     int64_t last_idr_frame;

  51.     int pic_order_cnt;

  52. 

  53.     int slice_nal_unit;

  54.     int slice_type;

  55. 

  56.     CodedBitstreamContext cbc;

  57.     CodedBitstreamFragment current_access_unit;

  58. } VAAPIEncodeH265Context;

  59. 

  60. typedef struct VAAPIEncodeH265Options {

  61.     int qp;

  62. } VAAPIEncodeH265Options;

  63. 

  64. 

  65. static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,

  66.                                                char *data, size_t *data_len,

  67.                                                CodedBitstreamFragment *au)

  68. {

  69.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  70.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  71.     int err;

  72. 

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

  74.     if (err < 0) {

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

  76.         return err;

  77.     }

  78. 

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

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

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

  82.                8 * au->data_size - au->data_bit_padding);

  83.         return AVERROR(ENOSPC);

  84.     }

  85. 

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

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

  88. 

  89.     return 0;

  90. }

  91. 

  92. static int vaapi_encode_h265_add_nal(AVCodecContext *avctx,

  93.                                      CodedBitstreamFragment *au,

  94.                                      void *nal_unit)

  95. {

  96.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  97.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  98.     H265RawNALUnitHeader *header = nal_unit;

  99.     int err;

  100. 

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

  102.                                      header->nal_unit_type, nal_unit);

  103.     if (err < 0) {

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

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

  106.         return err;

  107.     }

  108. 

  109.     return 0;

  110. }

  111. 

  112. static int vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,

  113.                                                    char *data, size_t *data_len)

  114. {

  115.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  116.     VAAPIEncodeH265Context *priv = ctx->priv_data;

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

  118.     int err;

  119. 

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

  121.     if (err < 0)

  122.         goto fail;

  123. 

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

  125.     if (err < 0)

  126.         goto fail;

  127. 

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

  129.     if (err < 0)

  130.         goto fail;

  131. 

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

  133. fail:

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

  135.     return err;

  136. }

  137. 

  138. static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,

  139.                                                 VAAPIEncodePicture *pic,

  140.                                                 VAAPIEncodeSlice *slice,

  141.                                                 char *data, size_t *data_len)

  142. {

  143.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  144.     VAAPIEncodeH265Context *priv = ctx->priv_data;

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

  146.     int err;

  147. 

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

  149.     if (err < 0)

  150.         goto fail;

  151. 

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

  153. fail:

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

  155.     return err;

  156. }

  157. 

  158. static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)

  159. {

  160.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  161.     VAAPIEncodeH265Context           *priv = ctx->priv_data;

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

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

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

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

  166.     VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;

  167.     VAEncPictureParameterBufferHEVC  *vpic = ctx->codec_picture_params;

  168.     int i;

  169. 

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

  171.            sizeof(priv->current_access_unit));

  172. 

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

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

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

  176. 

  177. 

  178.     // VPS

  179. 

  180.     vps->nal_unit_header = (H265RawNALUnitHeader) {

  181.         .nal_unit_type         = HEVC_NAL_VPS,

  182.         .nuh_layer_id          = 0,

  183.         .nuh_temporal_id_plus1 = 1,

  184.     };

  185. 

  186.     vps->vps_video_parameter_set_id = 0;

  187. 

  188.     vps->vps_base_layer_internal_flag  = 1;

  189.     vps->vps_base_layer_available_flag = 1;

  190.     vps->vps_max_layers_minus1         = 0;

  191.     vps->vps_max_sub_layers_minus1     = 0;

  192.     vps->vps_temporal_id_nesting_flag  = 1;

  193. 

  194.     vps->profile_tier_level = (H265RawProfileTierLevel) {

  195.         .general_profile_space = 0,

  196.         .general_profile_idc   = avctx->profile,

  197.         .general_tier_flag     = 0,

  198. 

  199.         .general_progressive_source_flag    = 1,

  200.         .general_interlaced_source_flag     = 0,

  201.         .general_non_packed_constraint_flag = 1,

  202.         .general_frame_only_constraint_flag = 1,

  203. 

  204.         .general_level_idc     = avctx->level,

  205.     };

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

  207. 

  208.     vps->vps_sub_layer_ordering_info_present_flag = 0;

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

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

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

  212. 

  213.     vps->vps_max_layer_id             = 0;

  214.     vps->vps_num_layer_sets_minus1    = 0;

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

  216. 

  217.     vps->vps_timing_info_present_flag = 1;

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

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

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

  221.         vps->vps_poc_proportional_to_timing_flag = 1;

  222.         vps->vps_num_ticks_poc_diff_one_minus1   = 0;

  223.     } else {

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

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

  226.         vps->vps_poc_proportional_to_timing_flag = 0;

  227.     }

  228.     vps->vps_num_hrd_parameters = 0;

  229. 

  230. 

  231.     // SPS

  232. 

  233.     sps->nal_unit_header = (H265RawNALUnitHeader) {

  234.         .nal_unit_type         = HEVC_NAL_SPS,

  235.         .nuh_layer_id          = 0,

  236.         .nuh_temporal_id_plus1 = 1,

  237.     };

  238. 

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

  240. 

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

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

  243. 

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

  245. 

  246.     sps->sps_seq_parameter_set_id = 0;

  247. 

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

  249.     sps->separate_colour_plane_flag = 0;

  250. 

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

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

  253. 

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

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

  256.         sps->conformance_window_flag = 1;

  257.         sps->conf_win_left_offset   = 0;

  258.         sps->conf_win_right_offset  =

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

  260.         sps->conf_win_top_offset    = 0;

  261.         sps->conf_win_bottom_offset =

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

  263.     } else {

  264.         sps->conformance_window_flag = 0;

  265.     }

  266. 

  267.     sps->bit_depth_luma_minus8 =

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

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

  270. 

  271.     sps->log2_max_pic_order_cnt_lsb_minus4 = 8;

  272. 

  273.     sps->sps_sub_layer_ordering_info_present_flag =

  274.         vps->vps_sub_layer_ordering_info_present_flag;

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

  276.         sps->sps_max_dec_pic_buffering_minus1[i] =

  277.             vps->vps_max_dec_pic_buffering_minus1[i];

  278.         sps->sps_max_num_reorder_pics[i] =

  279.             vps->vps_max_num_reorder_pics[i];

  280.         sps->sps_max_latency_increase_plus1[i] =

  281.             vps->vps_max_latency_increase_plus1[i];

  282.     }

  283. 

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

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

  286.     // driver.

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

  288.     sps->log2_min_luma_coding_block_size_minus3   = 0;

  289.     sps->log2_diff_max_min_luma_coding_block_size = 2;

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

  291.     sps->log2_min_luma_transform_block_size_minus2   = 0;

  292.     sps->log2_diff_max_min_luma_transform_block_size = 3;

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

  294.     sps->max_transform_hierarchy_depth_inter = 3;

  295.     sps->max_transform_hierarchy_depth_intra = 3;

  296.     // AMP works.

  297.     sps->amp_enabled_flag = 1;

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

  299.     sps->sample_adaptive_offset_enabled_flag = 0;

  300.     sps->sps_temporal_mvp_enabled_flag       = 0;

  301. 

  302.     sps->pcm_enabled_flag = 0;

  303. 

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

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

  306.     // don't bother.

  307.     sps->num_short_term_ref_pic_sets     = 0;

  308.     sps->long_term_ref_pics_present_flag = 0;

  309. 

  310.     sps->vui_parameters_present_flag = 1;

  311. 

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

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

  314.         static const AVRational sar_idc[] = {

  315.             {   0,  0 },

  316.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  317.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  318.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  319.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  320.         };

  321.         int i;

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

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

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

  325.                 vui->aspect_ratio_idc = i;

  326.                 break;

  327.             }

  328.         }

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

  330.             vui->aspect_ratio_idc = 255;

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

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

  333.         }

  334.         vui->aspect_ratio_info_present_flag = 1;

  335.     }

  336. 

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

  338.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  339.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  340.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  341.         vui->video_signal_type_present_flag = 1;

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

  343.         vui->video_full_range_flag =

  344.             avctx->color_range == AVCOL_RANGE_JPEG;

  345. 

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

  347.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  348.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  349.             vui->colour_description_present_flag = 1;

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

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

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

  353.         }

  354.     } else {

  355.         vui->video_format             = 5;

  356.         vui->video_full_range_flag    = 0;

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

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

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

  360.     }

  361. 

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

  363.         vui->chroma_loc_info_present_flag = 1;

  364.         vui->chroma_sample_loc_type_top_field    =

  365.         vui->chroma_sample_loc_type_bottom_field =

  366.             avctx->chroma_sample_location - 1;

  367.     }

  368. 

  369.     vui->vui_timing_info_present_flag        = 1;

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

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

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

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

  374.     vui->vui_hrd_parameters_present_flag     = 0;

  375. 

  376.     vui->bitstream_restriction_flag    = 1;

  377.     vui->motion_vectors_over_pic_boundaries_flag = 1;

  378.     vui->restricted_ref_pic_lists_flag = 1;

  379.     vui->max_bytes_per_pic_denom       = 0;

  380.     vui->max_bits_per_min_cu_denom     = 0;

  381.     vui->log2_max_mv_length_horizontal = 15;

  382.     vui->log2_max_mv_length_vertical   = 15;

  383. 

  384. 

  385.     // PPS

  386. 

  387.     pps->nal_unit_header = (H265RawNALUnitHeader) {

  388.         .nal_unit_type         = HEVC_NAL_PPS,

  389.         .nuh_layer_id          = 0,

  390.         .nuh_temporal_id_plus1 = 1,

  391.     };

  392. 

  393.     pps->pps_pic_parameter_set_id = 0;

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

  395. 

  396.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  397.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  398. 

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

  400. 

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

  402.     pps->diff_cu_qp_delta_depth   = 0;

  403. 

  404.     pps->pps_loop_filter_across_slices_enabled_flag = 1;

  405. 

  406. 

  407.     // Fill VAAPI parameter buffers.

  408. 

  409.     *vseq = (VAEncSequenceParameterBufferHEVC) {

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

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

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

  413. 

  414.         .intra_period     = avctx->gop_size,

  415.         .intra_idr_period = avctx->gop_size,

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

  417.         .bits_per_second   = avctx->bit_rate,

  418. 

  419.         .pic_width_in_luma_samples  = sps->pic_width_in_luma_samples,

  420.         .pic_height_in_luma_samples = sps->pic_height_in_luma_samples,

  421. 

  422.         .seq_fields.bits = {

  423.             .chroma_format_idc             = sps->chroma_format_idc,

  424.             .separate_colour_plane_flag    = sps->separate_colour_plane_flag,

  425.             .bit_depth_luma_minus8         = sps->bit_depth_luma_minus8,

  426.             .bit_depth_chroma_minus8       = sps->bit_depth_chroma_minus8,

  427.             .scaling_list_enabled_flag     = sps->scaling_list_enabled_flag,

  428.             .strong_intra_smoothing_enabled_flag =

  429.                 sps->strong_intra_smoothing_enabled_flag,

  430.             .amp_enabled_flag              = sps->amp_enabled_flag,

  431.             .sample_adaptive_offset_enabled_flag =

  432.                 sps->sample_adaptive_offset_enabled_flag,

  433.             .pcm_enabled_flag              = sps->pcm_enabled_flag,

  434.             .pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,

  435.             .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,

  436.         },

  437. 

  438.         .log2_min_luma_coding_block_size_minus3 =

  439.             sps->log2_min_luma_coding_block_size_minus3,

  440.         .log2_diff_max_min_luma_coding_block_size =

  441.             sps->log2_diff_max_min_luma_coding_block_size,

  442.         .log2_min_transform_block_size_minus2 =

  443.             sps->log2_min_luma_transform_block_size_minus2,

  444.         .log2_diff_max_min_transform_block_size =

  445.             sps->log2_diff_max_min_luma_transform_block_size,

  446.         .max_transform_hierarchy_depth_inter =

  447.             sps->max_transform_hierarchy_depth_inter,

  448.         .max_transform_hierarchy_depth_intra =

  449.             sps->max_transform_hierarchy_depth_intra,

  450. 

  451.         .pcm_sample_bit_depth_luma_minus1 =

  452.             sps->pcm_sample_bit_depth_luma_minus1,

  453.         .pcm_sample_bit_depth_chroma_minus1 =

  454.             sps->pcm_sample_bit_depth_chroma_minus1,

  455.         .log2_min_pcm_luma_coding_block_size_minus3 =

  456.             sps->log2_min_pcm_luma_coding_block_size_minus3,

  457.         .log2_max_pcm_luma_coding_block_size_minus3 =

  458.             sps->log2_min_pcm_luma_coding_block_size_minus3 +

  459.             sps->log2_diff_max_min_pcm_luma_coding_block_size,

  460. 

  461.         .vui_parameters_present_flag = 0,

  462.     };

  463. 

  464.     *vpic = (VAEncPictureParameterBufferHEVC) {

  465.         .decoded_curr_pic = {

  466.             .picture_id = VA_INVALID_ID,

  467.             .flags      = VA_PICTURE_HEVC_INVALID,

  468.         },

  469. 

  470.         .coded_buf = VA_INVALID_ID,

  471. 

  472.         .collocated_ref_pic_index = 0xff,

  473. 

  474.         .last_picture = 0,

  475. 

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

  477.         .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,

  478.         .pps_cb_qp_offset       = pps->pps_cb_qp_offset,

  479.         .pps_cr_qp_offset       = pps->pps_cr_qp_offset,

  480. 

  481.         .num_tile_columns_minus1 = pps->num_tile_columns_minus1,

  482.         .num_tile_rows_minus1    = pps->num_tile_rows_minus1,

  483. 

  484.         .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,

  485.         .ctu_max_bitsize_allowed          = 0,

  486. 

  487.         .num_ref_idx_l0_default_active_minus1 =

  488.             pps->num_ref_idx_l0_default_active_minus1,

  489.         .num_ref_idx_l1_default_active_minus1 =

  490.             pps->num_ref_idx_l1_default_active_minus1,

  491. 

  492.         .slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,

  493. 

  494.         .pic_fields.bits = {

  495.             .sign_data_hiding_enabled_flag  = pps->sign_data_hiding_enabled_flag,

  496.             .constrained_intra_pred_flag    = pps->constrained_intra_pred_flag,

  497.             .transform_skip_enabled_flag    = pps->transform_skip_enabled_flag,

  498.             .cu_qp_delta_enabled_flag       = pps->cu_qp_delta_enabled_flag,

  499.             .weighted_pred_flag             = pps->weighted_pred_flag,

  500.             .weighted_bipred_flag           = pps->weighted_bipred_flag,

  501.             .transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,

  502.             .tiles_enabled_flag             = pps->tiles_enabled_flag,

  503.             .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,

  504.             .loop_filter_across_tiles_enabled_flag =

  505.                 pps->loop_filter_across_tiles_enabled_flag,

  506.             .scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |

  507.                                                pps->pps_scaling_list_data_present_flag),

  508.             .screen_content_flag            = 0,

  509.             .enable_gpu_weighted_prediction = 0,

  510.             .no_output_of_prior_pics_flag   = 0,

  511.         },

  512.     };

  513. 

  514.     return 0;

  515. }

  516. 

  517. static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,

  518.                                                  VAAPIEncodePicture *pic)

  519. {

  520.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  521.     VAAPIEncodeH265Context          *priv = ctx->priv_data;

  522.     VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;

  523.     int i;

  524. 

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

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

  527. 

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

  529. 

  530.         priv->slice_nal_unit = HEVC_NAL_IDR_W_RADL;

  531.         priv->slice_type     = HEVC_SLICE_I;

  532.     } else {

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

  534. 

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

  536.             priv->slice_nal_unit = HEVC_NAL_CRA_NUT;

  537.             priv->slice_type     = HEVC_SLICE_I;

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

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

  540.             priv->slice_nal_unit = HEVC_NAL_TRAIL_R;

  541.             priv->slice_type     = HEVC_SLICE_P;

  542.         } else {

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

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

  545.                 priv->slice_nal_unit = HEVC_NAL_RASL_N;

  546.             else

  547.                 priv->slice_nal_unit = HEVC_NAL_TRAIL_N;

  548.             priv->slice_type = HEVC_SLICE_B;

  549.         }

  550.     }

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

  552. 

  553.     vpic->decoded_curr_pic = (VAPictureHEVC) {

  554.         .picture_id    = pic->recon_surface,

  555.         .pic_order_cnt = priv->pic_order_cnt,

  556.         .flags         = 0,

  557.     };

  558. 

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

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

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

  562. 

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

  564.             .picture_id    = ref->recon_surface,

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

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

  567.                       VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |

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

  569.                       VA_PICTURE_HEVC_RPS_ST_CURR_AFTER  : 0),

  570.         };

  571.     }

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

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

  574.             .picture_id = VA_INVALID_ID,

  575.             .flags      = VA_PICTURE_HEVC_INVALID,

  576.         };

  577.     }

  578. 

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

  580. 

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

  582. 

  583.     switch (pic->type) {

  584.     case PICTURE_TYPE_IDR:

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

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

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

  588.         break;

  589.     case PICTURE_TYPE_I:

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

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

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

  593.         break;

  594.     case PICTURE_TYPE_P:

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

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

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

  598.         break;

  599.     case PICTURE_TYPE_B:

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

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

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

  603.         break;

  604.     default:

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

  606.     }

  607. 

  608.     pic->nb_slices = 1;

  609. 

  610.     return 0;

  611. }

  612. 

  613. static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,

  614.                                                VAAPIEncodePicture *pic,

  615.                                                VAAPIEncodeSlice *slice)

  616. {

  617.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  618.     VAAPIEncodeH265Context           *priv = ctx->priv_data;

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

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

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

  622.     VAEncPictureParameterBufferHEVC  *vpic = pic->codec_picture_params;

  623.     VAEncSliceParameterBufferHEVC  *vslice = slice->codec_slice_params;

  624.     int i;

  625. 

  626.     sh->nal_unit_header = (H265RawNALUnitHeader) {

  627.         .nal_unit_type         = priv->slice_nal_unit,

  628.         .nuh_layer_id          = 0,

  629.         .nuh_temporal_id_plus1 = 1,

  630.     };

  631. 

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

  633. 

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

  635.     sh->first_slice_segment_in_pic_flag = 1;

  636.     sh->slice_segment_address           = 0;

  637. 

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

  639. 

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

  641.         (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;

  642. 

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

  644.         H265RawSTRefPicSet *rps;

  645.         VAAPIEncodePicture *st;

  646.         int used;

  647. 

  648.         sh->short_term_ref_pic_set_sps_flag = 0;

  649. 

  650.         rps = &sh->short_term_ref_pic_set;

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

  652. 

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

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

  655.                 // Not yet in DPB.

  656.                 continue;

  657.             }

  658.             used = 0;

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

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

  661.                     used = 1;

  662.             }

  663.             if (!used) {

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

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

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

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

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

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

  670.                 VAAPIEncodePicture *rp;

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

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

  673.                         continue;

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

  675.                         continue;

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

  677.                         break;

  678.                 }

  679.                 if (!rp)

  680.                     continue;

  681.             }

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

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

  684.             // the current frame directly).

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

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

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

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

  689.                 ++rps->num_negative_pics;

  690.             } else {

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

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

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

  694.                 ++rps->num_positive_pics;

  695.             }

  696.         }

  697. 

  698.         sh->num_long_term_sps  = 0;

  699.         sh->num_long_term_pics = 0;

  700. 

  701.         sh->slice_temporal_mvp_enabled_flag =

  702.             sps->sps_temporal_mvp_enabled_flag;

  703.         if (sh->slice_temporal_mvp_enabled_flag) {

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

  705.             sh->collocated_ref_idx      = 0;

  706.         }

  707. 

  708.         sh->num_ref_idx_active_override_flag = 0;

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

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

  711.     }

  712. 

  713.     sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =

  714.         sps->sample_adaptive_offset_enabled_flag;

  715. 

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

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

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

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

  720.     else

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

  722. 

  723. 

  724.     *vslice = (VAEncSliceParameterBufferHEVC) {

  725.         .slice_segment_address = sh->slice_segment_address,

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

  727. 

  728.         .slice_type                 = sh->slice_type,

  729.         .slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,

  730. 

  731.         .num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,

  732.         .num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,

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

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

  735. 

  736.         .luma_log2_weight_denom         = sh->luma_log2_weight_denom,

  737.         .delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,

  738. 

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

  740. 

  741.         .slice_qp_delta     = sh->slice_qp_delta,

  742.         .slice_cb_qp_offset = sh->slice_cb_qp_offset,

  743.         .slice_cr_qp_offset = sh->slice_cr_qp_offset,

  744. 

  745.         .slice_beta_offset_div2 = sh->slice_beta_offset_div2,

  746.         .slice_tc_offset_div2   = sh->slice_tc_offset_div2,

  747. 

  748.         .slice_fields.bits = {

  749.             .last_slice_of_pic_flag       = 1,

  750.             .dependent_slice_segment_flag = sh->dependent_slice_segment_flag,

  751.             .colour_plane_id              = sh->colour_plane_id,

  752.             .slice_temporal_mvp_enabled_flag =

  753.                 sh->slice_temporal_mvp_enabled_flag,

  754.             .slice_sao_luma_flag          = sh->slice_sao_luma_flag,

  755.             .slice_sao_chroma_flag        = sh->slice_sao_chroma_flag,

  756.             .num_ref_idx_active_override_flag =

  757.                 sh->num_ref_idx_active_override_flag,

  758.             .mvd_l1_zero_flag             = sh->mvd_l1_zero_flag,

  759.             .cabac_init_flag              = sh->cabac_init_flag,

  760.             .slice_deblocking_filter_disabled_flag =

  761.                 sh->slice_deblocking_filter_disabled_flag,

  762.             .slice_loop_filter_across_slices_enabled_flag =

  763.                 sh->slice_loop_filter_across_slices_enabled_flag,

  764.             .collocated_from_l0_flag      = sh->collocated_from_l0_flag,

  765.         },

  766.     };

  767. 

  768. 

  769.     return 0;

  770. }

  771. 

  772. static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)

  773. {

  774.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  775.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  776.     VAAPIEncodeH265Options  *opt = ctx->codec_options;

  777.     int err;

  778. 

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

  780.     if (err < 0)

  781.         return err;

  782. 

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

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

  785. 

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

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

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

  789. 

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

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

  792.         if (avctx->i_quant_factor > 0.0)

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

  794.                                         avctx->i_quant_offset) + 0.5);

  795.         else

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

  797.         if (avctx->b_quant_factor > 0.0)

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

  799.                                       avctx->b_quant_offset) + 0.5);

  800.         else

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

  802. 

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

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

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

  806. 

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

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

  809.         priv->fixed_qp_idr = 30;

  810.         priv->fixed_qp_p   = 30;

  811.         priv->fixed_qp_b   = 30;

  812. 

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

  814.                avctx->bit_rate);

  815. 

  816.     } else {

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

  818.     }

  819. 

  820.     return 0;

  821. }

  822. 

  823. static const VAAPIEncodeType vaapi_encode_type_h265 = {

  824.     .priv_data_size        = sizeof(VAAPIEncodeH265Context),

  825. 

  826.     .configure             = &vaapi_encode_h265_configure,

  827. 

  828.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferHEVC),

  829.     .init_sequence_params  = &vaapi_encode_h265_init_sequence_params,

  830. 

  831.     .picture_params_size   = sizeof(VAEncPictureParameterBufferHEVC),

  832.     .init_picture_params   = &vaapi_encode_h265_init_picture_params,

  833. 

  834.     .slice_params_size     = sizeof(VAEncSliceParameterBufferHEVC),

  835.     .init_slice_params     = &vaapi_encode_h265_init_slice_params,

  836. 

  837.     .sequence_header_type  = VAEncPackedHeaderSequence,

  838.     .write_sequence_header = &vaapi_encode_h265_write_sequence_header,

  839. 

  840.     .slice_header_type     = VAEncPackedHeaderHEVC_Slice,

  841.     .write_slice_header    = &vaapi_encode_h265_write_slice_header,

  842. };

  843. 

  844. static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)

  845. {

  846.     VAAPIEncodeContext *ctx = avctx->priv_data;

  847. 

  848.     ctx->codec = &vaapi_encode_type_h265;

  849. 

  850.     switch (avctx->profile) {

  851.     case FF_PROFILE_HEVC_MAIN:

  852.     case FF_PROFILE_UNKNOWN:

  853.         ctx->va_profile = VAProfileHEVCMain;

  854.         ctx->va_rt_format = VA_RT_FORMAT_YUV420;

  855.         break;

  856.     case FF_PROFILE_HEVC_MAIN_10:

  857. #ifdef VA_RT_FORMAT_YUV420_10BPP

  858.         ctx->va_profile = VAProfileHEVCMain10;

  859.         ctx->va_rt_format = VA_RT_FORMAT_YUV420_10BPP;

  860.         break;

  861. #else

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

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

  864.         return AVERROR(ENOSYS);

  865. #endif

  866.     default:

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

  868.                avctx->profile);

  869.         return AVERROR(EINVAL);

  870.     }

  871.     ctx->va_entrypoint = VAEntrypointEncSlice;

  872. 

  873.     if (avctx->bit_rate > 0)

  874.         ctx->va_rc_mode = VA_RC_CBR;

  875.     else

  876.         ctx->va_rc_mode = VA_RC_CQP;

  877. 

  878.     ctx->va_packed_headers =

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

  880.         VA_ENC_PACKED_HEADER_SLICE;     // Slice headers.

  881. 

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

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

  884. 

  885.     return ff_vaapi_encode_init(avctx);

  886. }

  887. 

  888. static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)

  889. {

  890.     VAAPIEncodeContext *ctx = avctx->priv_data;

  891.     VAAPIEncodeH265Context *priv = ctx->priv_data;

  892. 

  893.     if (priv)

  894.         ff_cbs_close(&priv->cbc);

  895. 

  896.     return ff_vaapi_encode_close(avctx);

  897. }

  898. 

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

  900.                    offsetof(VAAPIEncodeH265Options, x))

  901. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  902. static const AVOption vaapi_encode_h265_options[] = {

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

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

  905.     { NULL },

  906. };

  907. 

  908. static const AVCodecDefault vaapi_encode_h265_defaults[] = {

  909.     { "profile",        "1"   },

  910.     { "level",          "51"  },

  911.     { "b",              "0"   },

  912.     { "bf",             "2"   },

  913.     { "g",              "120" },

  914.     { "i_qfactor",      "1.0" },

  915.     { "i_qoffset",      "0.0" },

  916.     { "b_qfactor",      "1.2" },

  917.     { "b_qoffset",      "0.0" },

  918.     { NULL },

  919. };

  920. 

  921. static const AVClass vaapi_encode_h265_class = {

  922.     .class_name = "h265_vaapi",

  923.     .item_name  = av_default_item_name,

  924.     .option     = vaapi_encode_h265_options,

  925.     .version    = LIBAVUTIL_VERSION_INT,

  926. };

  927. 

  928. AVCodec ff_hevc_vaapi_encoder = {

  929.     .name           = "hevc_vaapi",

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

  931.     .type           = AVMEDIA_TYPE_VIDEO,

  932.     .id             = AV_CODEC_ID_HEVC,

  933.     .priv_data_size = (sizeof(VAAPIEncodeContext) +

  934.                        sizeof(VAAPIEncodeH265Options)),

  935.     .init           = &vaapi_encode_h265_init,

  936.     .encode2        = &ff_vaapi_encode2,

  937.     .close          = &vaapi_encode_h265_close,

  938.     .priv_class     = &vaapi_encode_h265_class,

  939.     .capabilities   = AV_CODEC_CAP_DELAY,

  940.     .defaults       = vaapi_encode_h265_defaults,

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

  942.         AV_PIX_FMT_VAAPI,

  943.         AV_PIX_FMT_NONE,

  944.     },

  945. };