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FFmpeg/libavcodec/vaapi_encode_h265.c

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  1. /*

  2.  * This file is part of FFmpeg.

  3.  *

  4.  * FFmpeg is free software; you can redistribute it and/or

  5.  * modify it under the terms of the GNU Lesser General Public

  6.  * License as published by the Free Software Foundation; either

  7.  * version 2.1 of the License, or (at your option) any later version.

  8.  *

  9.  * FFmpeg is distributed in the hope that it will be useful,

  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  12.  * Lesser General Public License for more details.

  13.  *

  14.  * You should have received a copy of the GNU Lesser General Public

  15.  * License along with FFmpeg; if not, write to the Free Software

  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  17.  */

  18. 

  19. #include <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/pixdesc.h"

  27. #include "libavutil/opt.h"

  28. #include "libavutil/mastering_display_metadata.h"

  29. 

  30. #include "avcodec.h"

  31. #include "cbs.h"

  32. #include "cbs_h265.h"

  33. #include "h265_profile_level.h"

  34. #include "hevc.h"

  35. #include "hevc_sei.h"

  36. #include "internal.h"

  37. #include "put_bits.h"

  38. #include "vaapi_encode.h"

  39. 

  40. enum {

  41.     SEI_MASTERING_DISPLAY       = 0x08,

  42.     SEI_CONTENT_LIGHT_LEVEL     = 0x10,

  43. };

  44. 

  45. typedef struct VAAPIEncodeH265Picture {

  46.     int pic_order_cnt;

  47. 

  48.     int64_t last_idr_frame;

  49. 

  50.     int slice_nal_unit;

  51.     int slice_type;

  52.     int pic_type;

  53. } VAAPIEncodeH265Picture;

  54. 

  55. typedef struct VAAPIEncodeH265Context {

  56.     VAAPIEncodeContext common;

  57. 

  58.     // User options.

  59.     int qp;

  60.     int aud;

  61.     int profile;

  62.     int tier;

  63.     int level;

  64.     int sei;

  65. 

  66.     // Derived settings.

  67.     int fixed_qp_idr;

  68.     int fixed_qp_p;

  69.     int fixed_qp_b;

  70. 

  71.     // Writer structures.

  72.     H265RawAUD   raw_aud;

  73.     H265RawVPS   raw_vps;

  74.     H265RawSPS   raw_sps;

  75.     H265RawPPS   raw_pps;

  76.     H265RawSEI   raw_sei;

  77.     H265RawSlice raw_slice;

  78. 

  79.     H265RawSEIMasteringDisplayColourVolume sei_mastering_display;

  80.     H265RawSEIContentLightLevelInfo        sei_content_light_level;

  81. 

  82.     CodedBitstreamContext *cbc;

  83.     CodedBitstreamFragment current_access_unit;

  84.     int aud_needed;

  85.     int sei_needed;

  86. } VAAPIEncodeH265Context;

  87. 

  88. 

  89. static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,

  90.                                                char *data, size_t *data_len,

  91.                                                CodedBitstreamFragment *au)

  92. {

  93.     VAAPIEncodeH265Context *priv = avctx->priv_data;

  94.     int err;

  95. 

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

  97.     if (err < 0) {

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

  99.         return err;

  100.     }

  101. 

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

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

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

  105.                8 * au->data_size - au->data_bit_padding);

  106.         return AVERROR(ENOSPC);

  107.     }

  108. 

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

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

  111. 

  112.     return 0;

  113. }

  114. 

  115. static int vaapi_encode_h265_add_nal(AVCodecContext *avctx,

  116.                                      CodedBitstreamFragment *au,

  117.                                      void *nal_unit)

  118. {

  119.     VAAPIEncodeH265Context *priv = avctx->priv_data;

  120.     H265RawNALUnitHeader *header = nal_unit;

  121.     int err;

  122. 

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

  124.                                      header->nal_unit_type, nal_unit, NULL);

  125.     if (err < 0) {

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

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

  128.         return err;

  129.     }

  130. 

  131.     return 0;

  132. }

  133. 

  134. static int vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,

  135.                                                    char *data, size_t *data_len)

  136. {

  137.     VAAPIEncodeH265Context *priv = avctx->priv_data;

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

  139.     int err;

  140. 

  141.     if (priv->aud_needed) {

  142.         err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_aud);

  143.         if (err < 0)

  144.             goto fail;

  145.         priv->aud_needed = 0;

  146.     }

  147. 

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

  149.     if (err < 0)

  150.         goto fail;

  151. 

  152.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_sps);

  153.     if (err < 0)

  154.         goto fail;

  155. 

  156.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_pps);

  157.     if (err < 0)

  158.         goto fail;

  159. 

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

  161. fail:

  162.     ff_cbs_fragment_reset(priv->cbc, au);

  163.     return err;

  164. }

  165. 

  166. static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,

  167.                                                 VAAPIEncodePicture *pic,

  168.                                                 VAAPIEncodeSlice *slice,

  169.                                                 char *data, size_t *data_len)

  170. {

  171.     VAAPIEncodeH265Context *priv = avctx->priv_data;

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

  173.     int err;

  174. 

  175.     if (priv->aud_needed) {

  176.         err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_aud);

  177.         if (err < 0)

  178.             goto fail;

  179.         priv->aud_needed = 0;

  180.     }

  181. 

  182.     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_slice);

  183.     if (err < 0)

  184.         goto fail;

  185. 

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

  187. fail:

  188.     ff_cbs_fragment_reset(priv->cbc, au);

  189.     return err;

  190. }

  191. 

  192. static int vaapi_encode_h265_write_extra_header(AVCodecContext *avctx,

  193.                                                 VAAPIEncodePicture *pic,

  194.                                                 int index, int *type,

  195.                                                 char *data, size_t *data_len)

  196. {

  197.     VAAPIEncodeH265Context *priv = avctx->priv_data;

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

  199.     int err, i;

  200. 

  201.     if (priv->sei_needed) {

  202.         H265RawSEI *sei = &priv->raw_sei;

  203. 

  204.         if (priv->aud_needed) {

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

  206.             if (err < 0)

  207.                 goto fail;

  208.             priv->aud_needed = 0;

  209.         }

  210. 

  211.         *sei = (H265RawSEI) {

  212.             .nal_unit_header = {

  213.                 .nal_unit_type         = HEVC_NAL_SEI_PREFIX,

  214.                 .nuh_layer_id          = 0,

  215.                 .nuh_temporal_id_plus1 = 1,

  216.             },

  217.         };

  218. 

  219.         i = 0;

  220. 

  221.         if (priv->sei_needed & SEI_MASTERING_DISPLAY) {

  222.             sei->payload[i].payload_type = HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO;

  223.             sei->payload[i].payload.mastering_display = priv->sei_mastering_display;

  224.             ++i;

  225.         }

  226. 

  227.         if (priv->sei_needed & SEI_CONTENT_LIGHT_LEVEL) {

  228.             sei->payload[i].payload_type = HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO;

  229.             sei->payload[i].payload.content_light_level = priv->sei_content_light_level;

  230.             ++i;

  231.         }

  232. 

  233.         sei->payload_count = i;

  234.         av_assert0(sei->payload_count > 0);

  235. 

  236.         err = vaapi_encode_h265_add_nal(avctx, au, sei);

  237.         if (err < 0)

  238.             goto fail;

  239.         priv->sei_needed = 0;

  240. 

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

  242.         if (err < 0)

  243.             goto fail;

  244. 

  245.         ff_cbs_fragment_reset(priv->cbc, au);

  246. 

  247.         *type = VAEncPackedHeaderRawData;

  248.         return 0;

  249.     } else {

  250.         return AVERROR_EOF;

  251.     }

  252. 

  253. fail:

  254.     ff_cbs_fragment_reset(priv->cbc, au);

  255.     return err;

  256. }

  257. 

  258. static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)

  259. {

  260.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  261.     VAAPIEncodeH265Context           *priv = avctx->priv_data;

  262.     H265RawVPS                        *vps = &priv->raw_vps;

  263.     H265RawSPS                        *sps = &priv->raw_sps;

  264.     H265RawPPS                        *pps = &priv->raw_pps;

  265.     H265RawProfileTierLevel           *ptl = &vps->profile_tier_level;

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

  267.     VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;

  268.     VAEncPictureParameterBufferHEVC  *vpic = ctx->codec_picture_params;

  269.     const AVPixFmtDescriptor *desc;

  270.     int chroma_format, bit_depth;

  271.     int i;

  272. 

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

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

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

  276. 

  277. 

  278.     desc = av_pix_fmt_desc_get(priv->common.input_frames->sw_format);

  279.     av_assert0(desc);

  280.     if (desc->nb_components == 1) {

  281.         chroma_format = 0;

  282.     } else {

  283.         if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 1) {

  284.             chroma_format = 1;

  285.         } else if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 0) {

  286.             chroma_format = 2;

  287.         } else if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {

  288.             chroma_format = 3;

  289.         } else {

  290.             av_log(avctx, AV_LOG_ERROR, "Chroma format of input pixel format "

  291.                    "%s is not supported.\n", desc->name);

  292.             return AVERROR(EINVAL);

  293.         }

  294.     }

  295.     bit_depth = desc->comp[0].depth;

  296. 

  297. 

  298.     // VPS

  299. 

  300.     vps->nal_unit_header = (H265RawNALUnitHeader) {

  301.         .nal_unit_type         = HEVC_NAL_VPS,

  302.         .nuh_layer_id          = 0,

  303.         .nuh_temporal_id_plus1 = 1,

  304.     };

  305. 

  306.     vps->vps_video_parameter_set_id = 0;

  307. 

  308.     vps->vps_base_layer_internal_flag  = 1;

  309.     vps->vps_base_layer_available_flag = 1;

  310.     vps->vps_max_layers_minus1         = 0;

  311.     vps->vps_max_sub_layers_minus1     = 0;

  312.     vps->vps_temporal_id_nesting_flag  = 1;

  313. 

  314.     ptl->general_profile_space = 0;

  315.     ptl->general_profile_idc   = avctx->profile;

  316.     ptl->general_tier_flag     = priv->tier;

  317. 

  318.     if (chroma_format == 1) {

  319.         ptl->general_profile_compatibility_flag[1] = bit_depth ==  8;

  320.         ptl->general_profile_compatibility_flag[2] = bit_depth <= 10;

  321.     }

  322.     ptl->general_profile_compatibility_flag[4] = 1;

  323. 

  324.     ptl->general_progressive_source_flag    = 1;

  325.     ptl->general_interlaced_source_flag     = 0;

  326.     ptl->general_non_packed_constraint_flag = 1;

  327.     ptl->general_frame_only_constraint_flag = 1;

  328. 

  329.     ptl->general_max_12bit_constraint_flag = bit_depth <= 12;

  330.     ptl->general_max_10bit_constraint_flag = bit_depth <= 10;

  331.     ptl->general_max_8bit_constraint_flag  = bit_depth ==  8;

  332. 

  333.     ptl->general_max_422chroma_constraint_flag  = chroma_format <= 2;

  334.     ptl->general_max_420chroma_constraint_flag  = chroma_format <= 1;

  335.     ptl->general_max_monochrome_constraint_flag = chroma_format == 0;

  336. 

  337.     ptl->general_intra_constraint_flag = ctx->gop_size == 1;

  338. 

  339.     ptl->general_lower_bit_rate_constraint_flag = 1;

  340. 

  341.     if (avctx->level != FF_LEVEL_UNKNOWN) {

  342.         ptl->general_level_idc = avctx->level;

  343.     } else {

  344.         const H265LevelDescriptor *level;

  345. 

  346.         level = ff_h265_guess_level(ptl, avctx->bit_rate,

  347.                                     ctx->surface_width, ctx->surface_height,

  348.                                     ctx->nb_slices, 1, 1,

  349.                                     (ctx->b_per_p > 0) + 1);

  350.         if (level) {

  351.             av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);

  352.             ptl->general_level_idc = level->level_idc;

  353.         } else {

  354.             av_log(avctx, AV_LOG_VERBOSE, "Stream will not conform to "

  355.                    "any normal level; using level 8.5.\n");

  356.             ptl->general_level_idc = 255;

  357.             // The tier flag must be set in level 8.5.

  358.             ptl->general_tier_flag = 1;

  359.         }

  360.     }

  361. 

  362.     vps->vps_sub_layer_ordering_info_present_flag = 0;

  363.     vps->vps_max_dec_pic_buffering_minus1[0]      = ctx->max_b_depth + 1;

  364.     vps->vps_max_num_reorder_pics[0]              = ctx->max_b_depth;

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

  366. 

  367.     vps->vps_max_layer_id             = 0;

  368.     vps->vps_num_layer_sets_minus1    = 0;

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

  370. 

  371.     vps->vps_timing_info_present_flag = 1;

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

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

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

  375.         vps->vps_poc_proportional_to_timing_flag = 1;

  376.         vps->vps_num_ticks_poc_diff_one_minus1   = 0;

  377.     } else {

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

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

  380.         vps->vps_poc_proportional_to_timing_flag = 0;

  381.     }

  382.     vps->vps_num_hrd_parameters = 0;

  383. 

  384. 

  385.     // SPS

  386. 

  387.     sps->nal_unit_header = (H265RawNALUnitHeader) {

  388.         .nal_unit_type         = HEVC_NAL_SPS,

  389.         .nuh_layer_id          = 0,

  390.         .nuh_temporal_id_plus1 = 1,

  391.     };

  392. 

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

  394. 

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

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

  397. 

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

  399. 

  400.     sps->sps_seq_parameter_set_id = 0;

  401. 

  402.     sps->chroma_format_idc          = chroma_format;

  403.     sps->separate_colour_plane_flag = 0;

  404. 

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

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

  407. 

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

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

  410.         sps->conformance_window_flag = 1;

  411.         sps->conf_win_left_offset   = 0;

  412.         sps->conf_win_right_offset  =

  413.             (ctx->surface_width - avctx->width) >> desc->log2_chroma_w;

  414.         sps->conf_win_top_offset    = 0;

  415.         sps->conf_win_bottom_offset =

  416.             (ctx->surface_height - avctx->height) >> desc->log2_chroma_h;

  417.     } else {

  418.         sps->conformance_window_flag = 0;

  419.     }

  420. 

  421.     sps->bit_depth_luma_minus8   = bit_depth - 8;

  422.     sps->bit_depth_chroma_minus8 = bit_depth - 8;

  423. 

  424.     sps->log2_max_pic_order_cnt_lsb_minus4 = 8;

  425. 

  426.     sps->sps_sub_layer_ordering_info_present_flag =

  427.         vps->vps_sub_layer_ordering_info_present_flag;

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

  429.         sps->sps_max_dec_pic_buffering_minus1[i] =

  430.             vps->vps_max_dec_pic_buffering_minus1[i];

  431.         sps->sps_max_num_reorder_pics[i] =

  432.             vps->vps_max_num_reorder_pics[i];

  433.         sps->sps_max_latency_increase_plus1[i] =

  434.             vps->vps_max_latency_increase_plus1[i];

  435.     }

  436. 

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

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

  439.     // driver.

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

  441.     sps->log2_min_luma_coding_block_size_minus3   = 0;

  442.     sps->log2_diff_max_min_luma_coding_block_size = 2;

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

  444.     sps->log2_min_luma_transform_block_size_minus2   = 0;

  445.     sps->log2_diff_max_min_luma_transform_block_size = 3;

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

  447.     sps->max_transform_hierarchy_depth_inter = 3;

  448.     sps->max_transform_hierarchy_depth_intra = 3;

  449.     // AMP works.

  450.     sps->amp_enabled_flag = 1;

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

  452.     sps->sample_adaptive_offset_enabled_flag = 0;

  453.     sps->sps_temporal_mvp_enabled_flag       = 0;

  454. 

  455.     sps->pcm_enabled_flag = 0;

  456. 

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

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

  459.     // don't bother.

  460.     sps->num_short_term_ref_pic_sets     = 0;

  461.     sps->long_term_ref_pics_present_flag = 0;

  462. 

  463.     sps->vui_parameters_present_flag = 1;

  464. 

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

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

  467.         static const AVRational sar_idc[] = {

  468.             {   0,  0 },

  469.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  470.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  471.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  472.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  473.         };

  474.         int num, den, i;

  475.         av_reduce(&num, &den, avctx->sample_aspect_ratio.num,

  476.                   avctx->sample_aspect_ratio.den, 65535);

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

  478.             if (num == sar_idc[i].num &&

  479.                 den == sar_idc[i].den) {

  480.                 vui->aspect_ratio_idc = i;

  481.                 break;

  482.             }

  483.         }

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

  485.             vui->aspect_ratio_idc = 255;

  486.             vui->sar_width  = num;

  487.             vui->sar_height = den;

  488.         }

  489.         vui->aspect_ratio_info_present_flag = 1;

  490.     }

  491. 

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

  493.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  494.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  495.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  496.         vui->video_signal_type_present_flag = 1;

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

  498.         vui->video_full_range_flag =

  499.             avctx->color_range == AVCOL_RANGE_JPEG;

  500. 

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

  502.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  503.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  504.             vui->colour_description_present_flag = 1;

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

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

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

  508.         }

  509.     } else {

  510.         vui->video_format             = 5;

  511.         vui->video_full_range_flag    = 0;

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

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

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

  515.     }

  516. 

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

  518.         vui->chroma_loc_info_present_flag = 1;

  519.         vui->chroma_sample_loc_type_top_field    =

  520.         vui->chroma_sample_loc_type_bottom_field =

  521.             avctx->chroma_sample_location - 1;

  522.     }

  523. 

  524.     vui->vui_timing_info_present_flag        = 1;

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

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

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

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

  529.     vui->vui_hrd_parameters_present_flag     = 0;

  530. 

  531.     vui->bitstream_restriction_flag    = 1;

  532.     vui->motion_vectors_over_pic_boundaries_flag = 1;

  533.     vui->restricted_ref_pic_lists_flag = 1;

  534.     vui->max_bytes_per_pic_denom       = 0;

  535.     vui->max_bits_per_min_cu_denom     = 0;

  536.     vui->log2_max_mv_length_horizontal = 15;

  537.     vui->log2_max_mv_length_vertical   = 15;

  538. 

  539. 

  540.     // PPS

  541. 

  542.     pps->nal_unit_header = (H265RawNALUnitHeader) {

  543.         .nal_unit_type         = HEVC_NAL_PPS,

  544.         .nuh_layer_id          = 0,

  545.         .nuh_temporal_id_plus1 = 1,

  546.     };

  547. 

  548.     pps->pps_pic_parameter_set_id = 0;

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

  550. 

  551.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  552.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  553. 

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

  555. 

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

  557.     pps->diff_cu_qp_delta_depth   = 0;

  558. 

  559.     pps->pps_loop_filter_across_slices_enabled_flag = 1;

  560. 

  561. 

  562.     // Fill VAAPI parameter buffers.

  563. 

  564.     *vseq = (VAEncSequenceParameterBufferHEVC) {

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

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

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

  568. 

  569.         .intra_period     = ctx->gop_size,

  570.         .intra_idr_period = ctx->gop_size,

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

  572.         .bits_per_second  = ctx->va_bit_rate,

  573. 

  574.         .pic_width_in_luma_samples  = sps->pic_width_in_luma_samples,

  575.         .pic_height_in_luma_samples = sps->pic_height_in_luma_samples,

  576. 

  577.         .seq_fields.bits = {

  578.             .chroma_format_idc             = sps->chroma_format_idc,

  579.             .separate_colour_plane_flag    = sps->separate_colour_plane_flag,

  580.             .bit_depth_luma_minus8         = sps->bit_depth_luma_minus8,

  581.             .bit_depth_chroma_minus8       = sps->bit_depth_chroma_minus8,

  582.             .scaling_list_enabled_flag     = sps->scaling_list_enabled_flag,

  583.             .strong_intra_smoothing_enabled_flag =

  584.                 sps->strong_intra_smoothing_enabled_flag,

  585.             .amp_enabled_flag              = sps->amp_enabled_flag,

  586.             .sample_adaptive_offset_enabled_flag =

  587.                 sps->sample_adaptive_offset_enabled_flag,

  588.             .pcm_enabled_flag              = sps->pcm_enabled_flag,

  589.             .pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,

  590.             .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,

  591.         },

  592. 

  593.         .log2_min_luma_coding_block_size_minus3 =

  594.             sps->log2_min_luma_coding_block_size_minus3,

  595.         .log2_diff_max_min_luma_coding_block_size =

  596.             sps->log2_diff_max_min_luma_coding_block_size,

  597.         .log2_min_transform_block_size_minus2 =

  598.             sps->log2_min_luma_transform_block_size_minus2,

  599.         .log2_diff_max_min_transform_block_size =

  600.             sps->log2_diff_max_min_luma_transform_block_size,

  601.         .max_transform_hierarchy_depth_inter =

  602.             sps->max_transform_hierarchy_depth_inter,

  603.         .max_transform_hierarchy_depth_intra =

  604.             sps->max_transform_hierarchy_depth_intra,

  605. 

  606.         .pcm_sample_bit_depth_luma_minus1 =

  607.             sps->pcm_sample_bit_depth_luma_minus1,

  608.         .pcm_sample_bit_depth_chroma_minus1 =

  609.             sps->pcm_sample_bit_depth_chroma_minus1,

  610.         .log2_min_pcm_luma_coding_block_size_minus3 =

  611.             sps->log2_min_pcm_luma_coding_block_size_minus3,

  612.         .log2_max_pcm_luma_coding_block_size_minus3 =

  613.             sps->log2_min_pcm_luma_coding_block_size_minus3 +

  614.             sps->log2_diff_max_min_pcm_luma_coding_block_size,

  615. 

  616.         .vui_parameters_present_flag = 0,

  617.     };

  618. 

  619.     *vpic = (VAEncPictureParameterBufferHEVC) {

  620.         .decoded_curr_pic = {

  621.             .picture_id = VA_INVALID_ID,

  622.             .flags      = VA_PICTURE_HEVC_INVALID,

  623.         },

  624. 

  625.         .coded_buf = VA_INVALID_ID,

  626. 

  627.         .collocated_ref_pic_index = 0xff,

  628. 

  629.         .last_picture = 0,

  630. 

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

  632.         .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,

  633.         .pps_cb_qp_offset       = pps->pps_cb_qp_offset,

  634.         .pps_cr_qp_offset       = pps->pps_cr_qp_offset,

  635. 

  636.         .num_tile_columns_minus1 = pps->num_tile_columns_minus1,

  637.         .num_tile_rows_minus1    = pps->num_tile_rows_minus1,

  638. 

  639.         .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,

  640.         .ctu_max_bitsize_allowed          = 0,

  641. 

  642.         .num_ref_idx_l0_default_active_minus1 =

  643.             pps->num_ref_idx_l0_default_active_minus1,

  644.         .num_ref_idx_l1_default_active_minus1 =

  645.             pps->num_ref_idx_l1_default_active_minus1,

  646. 

  647.         .slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,

  648. 

  649.         .pic_fields.bits = {

  650.             .sign_data_hiding_enabled_flag  = pps->sign_data_hiding_enabled_flag,

  651.             .constrained_intra_pred_flag    = pps->constrained_intra_pred_flag,

  652.             .transform_skip_enabled_flag    = pps->transform_skip_enabled_flag,

  653.             .cu_qp_delta_enabled_flag       = pps->cu_qp_delta_enabled_flag,

  654.             .weighted_pred_flag             = pps->weighted_pred_flag,

  655.             .weighted_bipred_flag           = pps->weighted_bipred_flag,

  656.             .transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,

  657.             .tiles_enabled_flag             = pps->tiles_enabled_flag,

  658.             .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,

  659.             .loop_filter_across_tiles_enabled_flag =

  660.                 pps->loop_filter_across_tiles_enabled_flag,

  661.             .scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |

  662.                                                pps->pps_scaling_list_data_present_flag),

  663.             .screen_content_flag            = 0,

  664.             .enable_gpu_weighted_prediction = 0,

  665.             .no_output_of_prior_pics_flag   = 0,

  666.         },

  667.     };

  668. 

  669.     return 0;

  670. }

  671. 

  672. static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,

  673.                                                  VAAPIEncodePicture *pic)

  674. {

  675.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  676.     VAAPIEncodeH265Context          *priv = avctx->priv_data;

  677.     VAAPIEncodeH265Picture          *hpic = pic->priv_data;

  678.     VAAPIEncodePicture              *prev = pic->prev;

  679.     VAAPIEncodeH265Picture         *hprev = prev ? prev->priv_data : NULL;

  680.     VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;

  681.     int i;

  682. 

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

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

  685. 

  686.         hpic->last_idr_frame = pic->display_order;

  687. 

  688.         hpic->slice_nal_unit = HEVC_NAL_IDR_W_RADL;

  689.         hpic->slice_type     = HEVC_SLICE_I;

  690.         hpic->pic_type       = 0;

  691.     } else {

  692.         av_assert0(prev);

  693.         hpic->last_idr_frame = hprev->last_idr_frame;

  694. 

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

  696.             hpic->slice_nal_unit = HEVC_NAL_CRA_NUT;

  697.             hpic->slice_type     = HEVC_SLICE_I;

  698.             hpic->pic_type       = 0;

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

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

  701.             hpic->slice_nal_unit = HEVC_NAL_TRAIL_R;

  702.             hpic->slice_type     = HEVC_SLICE_P;

  703.             hpic->pic_type       = 1;

  704.         } else {

  705.             VAAPIEncodePicture *irap_ref;

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

  707.             for (irap_ref = pic; irap_ref; irap_ref = irap_ref->refs[1]) {

  708.                 if (irap_ref->type == PICTURE_TYPE_I)

  709.                     break;

  710.             }

  711.             if (pic->b_depth == ctx->max_b_depth) {

  712.                 hpic->slice_nal_unit = irap_ref ? HEVC_NAL_RASL_N

  713.                                                 : HEVC_NAL_TRAIL_N;

  714.             } else {

  715.                 hpic->slice_nal_unit = irap_ref ? HEVC_NAL_RASL_R

  716.                                                 : HEVC_NAL_TRAIL_R;

  717.             }

  718.             hpic->slice_type = HEVC_SLICE_B;

  719.             hpic->pic_type   = 2;

  720.         }

  721.     }

  722.     hpic->pic_order_cnt = pic->display_order - hpic->last_idr_frame;

  723. 

  724.     if (priv->aud) {

  725.         priv->aud_needed = 1;

  726.         priv->raw_aud = (H265RawAUD) {

  727.             .nal_unit_header = {

  728.                 .nal_unit_type         = HEVC_NAL_AUD,

  729.                 .nuh_layer_id          = 0,

  730.                 .nuh_temporal_id_plus1 = 1,

  731.             },

  732.             .pic_type = hpic->pic_type,

  733.         };

  734.     } else {

  735.         priv->aud_needed = 0;

  736.     }

  737. 

  738.     priv->sei_needed = 0;

  739. 

  740.     // Only look for the metadata on I/IDR frame on the output. We

  741.     // may force an IDR frame on the output where the medadata gets

  742.     // changed on the input frame.

  743.     if ((priv->sei & SEI_MASTERING_DISPLAY) &&

  744.         (pic->type == PICTURE_TYPE_I || pic->type == PICTURE_TYPE_IDR)) {

  745.         AVFrameSideData *sd =

  746.             av_frame_get_side_data(pic->input_image,

  747.                                    AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);

  748. 

  749.         if (sd) {

  750.             AVMasteringDisplayMetadata *mdm =

  751.                 (AVMasteringDisplayMetadata *)sd->data;

  752. 

  753.             // SEI is needed when both the primaries and luminance are set

  754.             if (mdm->has_primaries && mdm->has_luminance) {

  755.                 H265RawSEIMasteringDisplayColourVolume *mdcv =

  756.                     &priv->sei_mastering_display;

  757.                 const int mapping[3] = {1, 2, 0};

  758.                 const int chroma_den = 50000;

  759.                 const int luma_den   = 10000;

  760. 

  761.                 for (i = 0; i < 3; i++) {

  762.                     const int j = mapping[i];

  763.                     mdcv->display_primaries_x[i] =

  764.                         FFMIN(lrint(chroma_den *

  765.                                     av_q2d(mdm->display_primaries[j][0])),

  766.                               chroma_den);

  767.                     mdcv->display_primaries_y[i] =

  768.                         FFMIN(lrint(chroma_den *

  769.                                     av_q2d(mdm->display_primaries[j][1])),

  770.                               chroma_den);

  771.                 }

  772. 

  773.                 mdcv->white_point_x =

  774.                     FFMIN(lrint(chroma_den * av_q2d(mdm->white_point[0])),

  775.                           chroma_den);

  776.                 mdcv->white_point_y =

  777.                     FFMIN(lrint(chroma_den * av_q2d(mdm->white_point[1])),

  778.                           chroma_den);

  779. 

  780.                 mdcv->max_display_mastering_luminance =

  781.                     lrint(luma_den * av_q2d(mdm->max_luminance));

  782.                 mdcv->min_display_mastering_luminance =

  783.                     FFMIN(lrint(luma_den * av_q2d(mdm->min_luminance)),

  784.                           mdcv->max_display_mastering_luminance);

  785. 

  786.                 priv->sei_needed |= SEI_MASTERING_DISPLAY;

  787.             }

  788.         }

  789.     }

  790. 

  791.     if ((priv->sei & SEI_CONTENT_LIGHT_LEVEL) &&

  792.         (pic->type == PICTURE_TYPE_I || pic->type == PICTURE_TYPE_IDR)) {

  793.         AVFrameSideData *sd =

  794.             av_frame_get_side_data(pic->input_image,

  795.                                    AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);

  796. 

  797.         if (sd) {

  798.             AVContentLightMetadata *clm =

  799.                 (AVContentLightMetadata *)sd->data;

  800.             H265RawSEIContentLightLevelInfo *clli =

  801.                 &priv->sei_content_light_level;

  802. 

  803.             clli->max_content_light_level     = FFMIN(clm->MaxCLL,  65535);

  804.             clli->max_pic_average_light_level = FFMIN(clm->MaxFALL, 65535);

  805. 

  806.             priv->sei_needed |= SEI_CONTENT_LIGHT_LEVEL;

  807.         }

  808.     }

  809. 

  810.     vpic->decoded_curr_pic = (VAPictureHEVC) {

  811.         .picture_id    = pic->recon_surface,

  812.         .pic_order_cnt = hpic->pic_order_cnt,

  813.         .flags         = 0,

  814.     };

  815. 

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

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

  818.         VAAPIEncodeH265Picture *href;

  819. 

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

  821.         href = ref->priv_data;

  822. 

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

  824.             .picture_id    = ref->recon_surface,

  825.             .pic_order_cnt = href->pic_order_cnt,

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

  827.                       VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |

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

  829.                       VA_PICTURE_HEVC_RPS_ST_CURR_AFTER  : 0),

  830.         };

  831.     }

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

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

  834.             .picture_id = VA_INVALID_ID,

  835.             .flags      = VA_PICTURE_HEVC_INVALID,

  836.         };

  837.     }

  838. 

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

  840. 

  841.     vpic->nal_unit_type = hpic->slice_nal_unit;

  842. 

  843.     switch (pic->type) {

  844.     case PICTURE_TYPE_IDR:

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

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

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

  848.         break;

  849.     case PICTURE_TYPE_I:

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

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

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

  853.         break;

  854.     case PICTURE_TYPE_P:

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

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

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

  858.         break;

  859.     case PICTURE_TYPE_B:

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

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

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

  863.         break;

  864.     default:

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

  866.     }

  867. 

  868.     return 0;

  869. }

  870. 

  871. static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,

  872.                                                VAAPIEncodePicture *pic,

  873.                                                VAAPIEncodeSlice *slice)

  874. {

  875.     VAAPIEncodeH265Context           *priv = avctx->priv_data;

  876.     VAAPIEncodeH265Picture           *hpic = pic->priv_data;

  877.     const H265RawSPS                  *sps = &priv->raw_sps;

  878.     const H265RawPPS                  *pps = &priv->raw_pps;

  879.     H265RawSliceHeader                 *sh = &priv->raw_slice.header;

  880.     VAEncPictureParameterBufferHEVC  *vpic = pic->codec_picture_params;

  881.     VAEncSliceParameterBufferHEVC  *vslice = slice->codec_slice_params;

  882.     int i;

  883. 

  884.     sh->nal_unit_header = (H265RawNALUnitHeader) {

  885.         .nal_unit_type         = hpic->slice_nal_unit,

  886.         .nuh_layer_id          = 0,

  887.         .nuh_temporal_id_plus1 = 1,

  888.     };

  889. 

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

  891. 

  892.     sh->first_slice_segment_in_pic_flag = slice->index == 0;

  893.     sh->slice_segment_address           = slice->block_start;

  894. 

  895.     sh->slice_type = hpic->slice_type;

  896. 

  897.     sh->slice_pic_order_cnt_lsb = hpic->pic_order_cnt &

  898.         (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;

  899. 

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

  901.         H265RawSTRefPicSet *rps;

  902.         const VAAPIEncodeH265Picture *strp;

  903.         int rps_poc[MAX_DPB_SIZE];

  904.         int rps_used[MAX_DPB_SIZE];

  905.         int i, j, poc, rps_pics;

  906. 

  907.         sh->short_term_ref_pic_set_sps_flag = 0;

  908. 

  909.         rps = &sh->short_term_ref_pic_set;

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

  911. 

  912.         rps_pics = 0;

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

  914.             strp = pic->refs[i]->priv_data;

  915.             rps_poc[rps_pics]  = strp->pic_order_cnt;

  916.             rps_used[rps_pics] = 1;

  917.             ++rps_pics;

  918.         }

  919.         for (i = 0; i < pic->nb_dpb_pics; i++) {

  920.             if (pic->dpb[i] == pic)

  921.                 continue;

  922.             for (j = 0; j < pic->nb_refs; j++) {

  923.                 if (pic->dpb[i] == pic->refs[j])

  924.                     break;

  925.             }

  926.             if (j < pic->nb_refs)

  927.                 continue;

  928.             strp = pic->dpb[i]->priv_data;

  929.             rps_poc[rps_pics]  = strp->pic_order_cnt;

  930.             rps_used[rps_pics] = 0;

  931.             ++rps_pics;

  932.         }

  933. 

  934.         for (i = 1; i < rps_pics; i++) {

  935.             for (j = i; j > 0; j--) {

  936.                 if (rps_poc[j] > rps_poc[j - 1])

  937.                     break;

  938.                 av_assert0(rps_poc[j] != rps_poc[j - 1]);

  939.                 FFSWAP(int, rps_poc[j],  rps_poc[j - 1]);

  940.                 FFSWAP(int, rps_used[j], rps_used[j - 1]);

  941.             }

  942.         }

  943. 

  944.         av_log(avctx, AV_LOG_DEBUG, "RPS for POC %d:",

  945.                hpic->pic_order_cnt);

  946.         for (i = 0; i < rps_pics; i++) {

  947.             av_log(avctx, AV_LOG_DEBUG, " (%d,%d)",

  948.                    rps_poc[i], rps_used[i]);

  949.         }

  950.         av_log(avctx, AV_LOG_DEBUG, "\n");

  951. 

  952.         for (i = 0; i < rps_pics; i++) {

  953.             av_assert0(rps_poc[i] != hpic->pic_order_cnt);

  954.             if (rps_poc[i] > hpic->pic_order_cnt)

  955.                 break;

  956.         }

  957. 

  958.         rps->num_negative_pics = i;

  959.         poc = hpic->pic_order_cnt;

  960.         for (j = i - 1; j >= 0; j--) {

  961.             rps->delta_poc_s0_minus1[i - 1 - j] = poc - rps_poc[j] - 1;

  962.             rps->used_by_curr_pic_s0_flag[i - 1 - j] = rps_used[j];

  963.             poc = rps_poc[j];

  964.         }

  965. 

  966.         rps->num_positive_pics = rps_pics - i;

  967.         poc = hpic->pic_order_cnt;

  968.         for (j = i; j < rps_pics; j++) {

  969.             rps->delta_poc_s1_minus1[j - i] = rps_poc[j] - poc - 1;

  970.             rps->used_by_curr_pic_s1_flag[j - i] = rps_used[j];

  971.             poc = rps_poc[j];

  972.         }

  973. 

  974.         sh->num_long_term_sps  = 0;

  975.         sh->num_long_term_pics = 0;

  976. 

  977.         sh->slice_temporal_mvp_enabled_flag =

  978.             sps->sps_temporal_mvp_enabled_flag;

  979.         if (sh->slice_temporal_mvp_enabled_flag) {

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

  981.             sh->collocated_ref_idx      = 0;

  982.         }

  983. 

  984.         sh->num_ref_idx_active_override_flag = 0;

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

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

  987.     }

  988. 

  989.     sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =

  990.         sps->sample_adaptive_offset_enabled_flag;

  991. 

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

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

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

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

  996.     else

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

  998. 

  999. 

  1000.     *vslice = (VAEncSliceParameterBufferHEVC) {

  1001.         .slice_segment_address = sh->slice_segment_address,

  1002.         .num_ctu_in_slice      = slice->block_size,

  1003. 

  1004.         .slice_type                 = sh->slice_type,

  1005.         .slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,

  1006. 

  1007.         .num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,

  1008.         .num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,

  1009. 

  1010.         .luma_log2_weight_denom         = sh->luma_log2_weight_denom,

  1011.         .delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,

  1012. 

  1013.         .max_num_merge_cand = 5 - sh->five_minus_max_num_merge_cand,

  1014. 

  1015.         .slice_qp_delta     = sh->slice_qp_delta,

  1016.         .slice_cb_qp_offset = sh->slice_cb_qp_offset,

  1017.         .slice_cr_qp_offset = sh->slice_cr_qp_offset,

  1018. 

  1019.         .slice_beta_offset_div2 = sh->slice_beta_offset_div2,

  1020.         .slice_tc_offset_div2   = sh->slice_tc_offset_div2,

  1021. 

  1022.         .slice_fields.bits = {

  1023.             .last_slice_of_pic_flag       = slice->index == pic->nb_slices - 1,

  1024.             .dependent_slice_segment_flag = sh->dependent_slice_segment_flag,

  1025.             .colour_plane_id              = sh->colour_plane_id,

  1026.             .slice_temporal_mvp_enabled_flag =

  1027.                 sh->slice_temporal_mvp_enabled_flag,

  1028.             .slice_sao_luma_flag          = sh->slice_sao_luma_flag,

  1029.             .slice_sao_chroma_flag        = sh->slice_sao_chroma_flag,

  1030.             .num_ref_idx_active_override_flag =

  1031.                 sh->num_ref_idx_active_override_flag,

  1032.             .mvd_l1_zero_flag             = sh->mvd_l1_zero_flag,

  1033.             .cabac_init_flag              = sh->cabac_init_flag,

  1034.             .slice_deblocking_filter_disabled_flag =

  1035.                 sh->slice_deblocking_filter_disabled_flag,

  1036.             .slice_loop_filter_across_slices_enabled_flag =

  1037.                 sh->slice_loop_filter_across_slices_enabled_flag,

  1038.             .collocated_from_l0_flag      = sh->collocated_from_l0_flag,

  1039.         },

  1040.     };

  1041. 

  1042.     for (i = 0; i < FF_ARRAY_ELEMS(vslice->ref_pic_list0); i++) {

  1043.         vslice->ref_pic_list0[i].picture_id = VA_INVALID_ID;

  1044.         vslice->ref_pic_list0[i].flags      = VA_PICTURE_HEVC_INVALID;

  1045.         vslice->ref_pic_list1[i].picture_id = VA_INVALID_ID;

  1046.         vslice->ref_pic_list1[i].flags      = VA_PICTURE_HEVC_INVALID;

  1047.     }

  1048. 

  1049.     av_assert0(pic->nb_refs <= 2);

  1050.     if (pic->nb_refs >= 1) {

  1051.         // Backward reference for P- or B-frame.

  1052.         av_assert0(pic->type == PICTURE_TYPE_P ||

  1053.                    pic->type == PICTURE_TYPE_B);

  1054.         vslice->ref_pic_list0[0] = vpic->reference_frames[0];

  1055.     }

  1056.     if (pic->nb_refs >= 2) {

  1057.         // Forward reference for B-frame.

  1058.         av_assert0(pic->type == PICTURE_TYPE_B);

  1059.         vslice->ref_pic_list1[0] = vpic->reference_frames[1];

  1060.     }

  1061. 

  1062.     return 0;

  1063. }

  1064. 

  1065. static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)

  1066. {

  1067.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1068.     VAAPIEncodeH265Context *priv = avctx->priv_data;

  1069.     int err;

  1070. 

  1071.     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);

  1072.     if (err < 0)

  1073.         return err;

  1074. 

  1075.     if (ctx->va_rc_mode == VA_RC_CQP) {

  1076.         // Note that VAAPI only supports positive QP values - the range is

  1077.         // therefore always bounded below by 1, even in 10-bit mode where

  1078.         // it should go down to -12.

  1079. 

  1080.         priv->fixed_qp_p = av_clip(ctx->rc_quality, 1, 51);

  1081.         if (avctx->i_quant_factor > 0.0)

  1082.             priv->fixed_qp_idr =

  1083.                 av_clip((avctx->i_quant_factor * priv->fixed_qp_p +

  1084.                          avctx->i_quant_offset) + 0.5, 1, 51);

  1085.         else

  1086.             priv->fixed_qp_idr = priv->fixed_qp_p;

  1087.         if (avctx->b_quant_factor > 0.0)

  1088.             priv->fixed_qp_b =

  1089.                 av_clip((avctx->b_quant_factor * priv->fixed_qp_p +

  1090.                          avctx->b_quant_offset) + 0.5, 1, 51);

  1091.         else

  1092.             priv->fixed_qp_b = priv->fixed_qp_p;

  1093. 

  1094.         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "

  1095.                "%d / %d / %d for IDR- / P- / B-frames.\n",

  1096.                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);

  1097. 

  1098.     } else {

  1099.         // These still need to be set for init_qp/slice_qp_delta.

  1100.         priv->fixed_qp_idr = 30;

  1101.         priv->fixed_qp_p   = 30;

  1102.         priv->fixed_qp_b   = 30;

  1103.     }

  1104. 

  1105.     ctx->roi_quant_range = 51 + 6 * (ctx->profile->depth - 8);

  1106. 

  1107.     return 0;

  1108. }

  1109. 

  1110. static const VAAPIEncodeProfile vaapi_encode_h265_profiles[] = {

  1111.     { FF_PROFILE_HEVC_MAIN,     8, 3, 1, 1, VAProfileHEVCMain       },

  1112.     { FF_PROFILE_HEVC_REXT,     8, 3, 1, 1, VAProfileHEVCMain       },

  1113. #if VA_CHECK_VERSION(0, 37, 0)

  1114.     { FF_PROFILE_HEVC_MAIN_10, 10, 3, 1, 1, VAProfileHEVCMain10     },

  1115.     { FF_PROFILE_HEVC_REXT,    10, 3, 1, 1, VAProfileHEVCMain10     },

  1116. #endif

  1117.     { FF_PROFILE_UNKNOWN }

  1118. };

  1119. 

  1120. static const VAAPIEncodeType vaapi_encode_type_h265 = {

  1121.     .profiles              = vaapi_encode_h265_profiles,

  1122. 

  1123.     .flags                 = FLAG_SLICE_CONTROL |

  1124.                              FLAG_B_PICTURES |

  1125.                              FLAG_B_PICTURE_REFERENCES |

  1126.                              FLAG_NON_IDR_KEY_PICTURES,

  1127. 

  1128.     .default_quality       = 25,

  1129. 

  1130.     .configure             = &vaapi_encode_h265_configure,

  1131. 

  1132.     .picture_priv_data_size = sizeof(VAAPIEncodeH265Picture),

  1133. 

  1134.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferHEVC),

  1135.     .init_sequence_params  = &vaapi_encode_h265_init_sequence_params,

  1136. 

  1137.     .picture_params_size   = sizeof(VAEncPictureParameterBufferHEVC),

  1138.     .init_picture_params   = &vaapi_encode_h265_init_picture_params,

  1139. 

  1140.     .slice_params_size     = sizeof(VAEncSliceParameterBufferHEVC),

  1141.     .init_slice_params     = &vaapi_encode_h265_init_slice_params,

  1142. 

  1143.     .sequence_header_type  = VAEncPackedHeaderSequence,

  1144.     .write_sequence_header = &vaapi_encode_h265_write_sequence_header,

  1145. 

  1146.     .slice_header_type     = VAEncPackedHeaderHEVC_Slice,

  1147.     .write_slice_header    = &vaapi_encode_h265_write_slice_header,

  1148. 

  1149.     .write_extra_header    = &vaapi_encode_h265_write_extra_header,

  1150. };

  1151. 

  1152. static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)

  1153. {

  1154.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1155.     VAAPIEncodeH265Context *priv = avctx->priv_data;

  1156. 

  1157.     ctx->codec = &vaapi_encode_type_h265;

  1158. 

  1159.     if (avctx->profile == FF_PROFILE_UNKNOWN)

  1160.         avctx->profile = priv->profile;

  1161.     if (avctx->level == FF_LEVEL_UNKNOWN)

  1162.         avctx->level = priv->level;

  1163. 

  1164.     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {

  1165.         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "

  1166.                "in 8-bit unsigned integer.\n", avctx->level);

  1167.         return AVERROR(EINVAL);

  1168.     }

  1169. 

  1170.     ctx->desired_packed_headers =

  1171.         VA_ENC_PACKED_HEADER_SEQUENCE | // VPS, SPS and PPS.

  1172.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  1173.         VA_ENC_PACKED_HEADER_MISC;      // SEI

  1174. 

  1175.     ctx->surface_width  = FFALIGN(avctx->width,  16);

  1176.     ctx->surface_height = FFALIGN(avctx->height, 16);

  1177. 

  1178.     // CTU size is currently hard-coded to 32.

  1179.     ctx->slice_block_width = ctx->slice_block_height = 32;

  1180. 

  1181.     if (priv->qp > 0)

  1182.         ctx->explicit_qp = priv->qp;

  1183. 

  1184.     return ff_vaapi_encode_init(avctx);

  1185. }

  1186. 

  1187. static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)

  1188. {

  1189.     VAAPIEncodeH265Context *priv = avctx->priv_data;

  1190. 

  1191.     ff_cbs_fragment_free(priv->cbc, &priv->current_access_unit);

  1192.     ff_cbs_close(&priv->cbc);

  1193. 

  1194.     return ff_vaapi_encode_close(avctx);

  1195. }

  1196. 

  1197. #define OFFSET(x) offsetof(VAAPIEncodeH265Context, x)

  1198. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  1199. static const AVOption vaapi_encode_h265_options[] = {

  1200.     VAAPI_ENCODE_COMMON_OPTIONS,

  1201.     VAAPI_ENCODE_RC_OPTIONS,

  1202. 

  1203.     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",

  1204.       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },

  1205. 

  1206.     { "aud", "Include AUD",

  1207.       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },

  1208. 

  1209.     { "profile", "Set profile (general_profile_idc)",

  1210.       OFFSET(profile), AV_OPT_TYPE_INT,

  1211.       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xff, FLAGS, "profile" },

  1212. 

  1213. #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \

  1214.       { .i64 = value }, 0, 0, FLAGS, "profile"

  1215.     { PROFILE("main",               FF_PROFILE_HEVC_MAIN) },

  1216.     { PROFILE("main10",             FF_PROFILE_HEVC_MAIN_10) },

  1217.     { PROFILE("rext",               FF_PROFILE_HEVC_REXT) },

  1218. #undef PROFILE

  1219. 

  1220.     { "tier", "Set tier (general_tier_flag)",

  1221.       OFFSET(tier), AV_OPT_TYPE_INT,

  1222.       { .i64 = 0 }, 0, 1, FLAGS, "tier" },

  1223.     { "main", NULL, 0, AV_OPT_TYPE_CONST,

  1224.       { .i64 = 0 }, 0, 0, FLAGS, "tier" },

  1225.     { "high", NULL, 0, AV_OPT_TYPE_CONST,

  1226.       { .i64 = 1 }, 0, 0, FLAGS, "tier" },

  1227. 

  1228.     { "level", "Set level (general_level_idc)",

  1229.       OFFSET(level), AV_OPT_TYPE_INT,

  1230.       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },

  1231. 

  1232. #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \

  1233.       { .i64 = value }, 0, 0, FLAGS, "level"

  1234.     { LEVEL("1",    30) },

  1235.     { LEVEL("2",    60) },

  1236.     { LEVEL("2.1",  63) },

  1237.     { LEVEL("3",    90) },

  1238.     { LEVEL("3.1",  93) },

  1239.     { LEVEL("4",   120) },

  1240.     { LEVEL("4.1", 123) },

  1241.     { LEVEL("5",   150) },

  1242.     { LEVEL("5.1", 153) },

  1243.     { LEVEL("5.2", 156) },

  1244.     { LEVEL("6",   180) },

  1245.     { LEVEL("6.1", 183) },

  1246.     { LEVEL("6.2", 186) },

  1247. #undef LEVEL

  1248. 

  1249.     { "sei", "Set SEI to include",

  1250.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

  1251.       { .i64 = SEI_MASTERING_DISPLAY | SEI_CONTENT_LIGHT_LEVEL },

  1252.       0, INT_MAX, FLAGS, "sei" },

  1253.     { "hdr",

  1254.       "Include HDR metadata for mastering display colour volume "

  1255.       "and content light level information",

  1256.       0, AV_OPT_TYPE_CONST,

  1257.       { .i64 = SEI_MASTERING_DISPLAY | SEI_CONTENT_LIGHT_LEVEL },

  1258.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1259. 

  1260.     { NULL },

  1261. };

  1262. 

  1263. static const AVCodecDefault vaapi_encode_h265_defaults[] = {

  1264.     { "b",              "0"   },

  1265.     { "bf",             "2"   },

  1266.     { "g",              "120" },

  1267.     { "i_qfactor",      "1"   },

  1268.     { "i_qoffset",      "0"   },

  1269.     { "b_qfactor",      "6/5" },

  1270.     { "b_qoffset",      "0"   },

  1271.     { "qmin",           "-1"  },

  1272.     { "qmax",           "-1"  },

  1273.     { NULL },

  1274. };

  1275. 

  1276. static const AVClass vaapi_encode_h265_class = {

  1277.     .class_name = "h265_vaapi",

  1278.     .item_name  = av_default_item_name,

  1279.     .option     = vaapi_encode_h265_options,

  1280.     .version    = LIBAVUTIL_VERSION_INT,

  1281. };

  1282. 

  1283. AVCodec ff_hevc_vaapi_encoder = {

  1284.     .name           = "hevc_vaapi",

  1285.     .long_name      = NULL_IF_CONFIG_SMALL("H.265/HEVC (VAAPI)"),

  1286.     .type           = AVMEDIA_TYPE_VIDEO,

  1287.     .id             = AV_CODEC_ID_HEVC,

  1288.     .priv_data_size = sizeof(VAAPIEncodeH265Context),

  1289.     .init           = &vaapi_encode_h265_init,

  1290.     .send_frame     = &ff_vaapi_encode_send_frame,

  1291.     .receive_packet = &ff_vaapi_encode_receive_packet,

  1292.     .close          = &vaapi_encode_h265_close,

  1293.     .priv_class     = &vaapi_encode_h265_class,

  1294.     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,

  1295.     .defaults       = vaapi_encode_h265_defaults,

  1296.     .pix_fmts = (const enum AVPixelFormat[]) {

  1297.         AV_PIX_FMT_VAAPI,

  1298.         AV_PIX_FMT_NONE,

  1299.     },

  1300.     .wrapper_name   = "vaapi",

  1301. };