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FFmpeg/libavcodec/vaapi_encode_h264.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_h264.h>

  23. 

  24. #include "libavutil/avassert.h"

  25. #include "libavutil/common.h"

  26. #include "libavutil/internal.h"

  27. #include "libavutil/opt.h"

  28. 

  29. #include "avcodec.h"

  30. #include "cbs.h"

  31. #include "cbs_h264.h"

  32. #include "h264.h"

  33. #include "h264_levels.h"

  34. #include "h264_sei.h"

  35. #include "internal.h"

  36. #include "vaapi_encode.h"

  37. 

  38. enum {

  39.     SEI_TIMING         = 0x01,

  40.     SEI_IDENTIFIER     = 0x02,

  41.     SEI_RECOVERY_POINT = 0x04,

  42. };

  43. 

  44. // Random (version 4) ISO 11578 UUID.

  45. static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = {

  46.     0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,

  47.     0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,

  48. };

  49. 

  50. typedef struct VAAPIEncodeH264Picture {

  51.     int frame_num;

  52.     int pic_order_cnt;

  53. 

  54.     int64_t last_idr_frame;

  55.     uint16_t idr_pic_id;

  56. 

  57.     int primary_pic_type;

  58.     int slice_type;

  59. 

  60.     int cpb_delay;

  61.     int dpb_delay;

  62. } VAAPIEncodeH264Picture;

  63. 

  64. typedef struct VAAPIEncodeH264Context {

  65.     VAAPIEncodeContext common;

  66. 

  67.     // User options.

  68.     int qp;

  69.     int quality;

  70.     int coder;

  71.     int aud;

  72.     int sei;

  73.     int profile;

  74.     int level;

  75. 

  76.     // Derived settings.

  77.     int mb_width;

  78.     int mb_height;

  79. 

  80.     int fixed_qp_idr;

  81.     int fixed_qp_p;

  82.     int fixed_qp_b;

  83. 

  84.     int dpb_frames;

  85. 

  86.     // Writer structures.

  87.     CodedBitstreamContext *cbc;

  88.     CodedBitstreamFragment current_access_unit;

  89. 

  90.     H264RawAUD   raw_aud;

  91.     H264RawSPS   raw_sps;

  92.     H264RawPPS   raw_pps;

  93.     H264RawSlice raw_slice;

  94. 

  95.     H264RawSEIBufferingPeriod      sei_buffering_period;

  96.     H264RawSEIPicTiming            sei_pic_timing;

  97.     H264RawSEIRecoveryPoint        sei_recovery_point;

  98.     SEIRawUserDataUnregistered     sei_identifier;

  99.     char                          *sei_identifier_string;

  100. 

  101.     int aud_needed;

  102.     int sei_needed;

  103.     int sei_cbr_workaround_needed;

  104. } VAAPIEncodeH264Context;

  105. 

  106. 

  107. static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,

  108.                                                char *data, size_t *data_len,

  109.                                                CodedBitstreamFragment *au)

  110. {

  111.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  112.     int err;

  113. 

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

  115.     if (err < 0) {

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

  117.         return err;

  118.     }

  119. 

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

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

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

  123.                8 * au->data_size - au->data_bit_padding);

  124.         return AVERROR(ENOSPC);

  125.     }

  126. 

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

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

  129. 

  130.     return 0;

  131. }

  132. 

  133. static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,

  134.                                      CodedBitstreamFragment *au,

  135.                                      void *nal_unit)

  136. {

  137.     H264RawNALUnitHeader *header = nal_unit;

  138.     int err;

  139. 

  140.     err = ff_cbs_insert_unit_content(au, -1,

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

  142.     if (err < 0) {

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

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

  145.         return err;

  146.     }

  147. 

  148.     return 0;

  149. }

  150. 

  151. static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,

  152.                                                    char *data, size_t *data_len)

  153. {

  154.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  156.     int err;

  157. 

  158.     if (priv->aud_needed) {

  159.         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);

  160.         if (err < 0)

  161.             goto fail;

  162.         priv->aud_needed = 0;

  163.     }

  164. 

  165.     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_sps);

  166.     if (err < 0)

  167.         goto fail;

  168. 

  169.     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_pps);

  170.     if (err < 0)

  171.         goto fail;

  172. 

  173.     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);

  174. fail:

  175.     ff_cbs_fragment_reset(au);

  176.     return err;

  177. }

  178. 

  179. static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,

  180.                                                 VAAPIEncodePicture *pic,

  181.                                                 VAAPIEncodeSlice *slice,

  182.                                                 char *data, size_t *data_len)

  183. {

  184.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  186.     int err;

  187. 

  188.     if (priv->aud_needed) {

  189.         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);

  190.         if (err < 0)

  191.             goto fail;

  192.         priv->aud_needed = 0;

  193.     }

  194. 

  195.     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_slice);

  196.     if (err < 0)

  197.         goto fail;

  198. 

  199.     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);

  200. fail:

  201.     ff_cbs_fragment_reset(au);

  202.     return err;

  203. }

  204. 

  205. static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,

  206.                                                 VAAPIEncodePicture *pic,

  207.                                                 int index, int *type,

  208.                                                 char *data, size_t *data_len)

  209. {

  210.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  212.     int err;

  213. 

  214.     if (priv->sei_needed) {

  215.         if (priv->aud_needed) {

  216.             err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);

  217.             if (err < 0)

  218.                 goto fail;

  219.             priv->aud_needed = 0;

  220.         }

  221. 

  222.         if (priv->sei_needed & SEI_IDENTIFIER) {

  223.             err = ff_cbs_sei_add_message(priv->cbc, au, 1,

  224.                                          SEI_TYPE_USER_DATA_UNREGISTERED,

  225.                                          &priv->sei_identifier, NULL);

  226.             if (err < 0)

  227.                 goto fail;

  228.         }

  229.         if (priv->sei_needed & SEI_TIMING) {

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

  231.                 err = ff_cbs_sei_add_message(priv->cbc, au, 1,

  232.                                              SEI_TYPE_BUFFERING_PERIOD,

  233.                                              &priv->sei_buffering_period, NULL);

  234.                 if (err < 0)

  235.                     goto fail;

  236.             }

  237.             err = ff_cbs_sei_add_message(priv->cbc, au, 1,

  238.                                          SEI_TYPE_PIC_TIMING,

  239.                                          &priv->sei_pic_timing, NULL);

  240.             if (err < 0)

  241.                 goto fail;

  242.         }

  243.         if (priv->sei_needed & SEI_RECOVERY_POINT) {

  244.             err = ff_cbs_sei_add_message(priv->cbc, au, 1,

  245.                                          SEI_TYPE_RECOVERY_POINT,

  246.                                          &priv->sei_recovery_point, NULL);

  247.             if (err < 0)

  248.                 goto fail;

  249.         }

  250. 

  251.         priv->sei_needed = 0;

  252. 

  253.         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);

  254.         if (err < 0)

  255.             goto fail;

  256. 

  257.         ff_cbs_fragment_reset(au);

  258. 

  259.         *type = VAEncPackedHeaderRawData;

  260.         return 0;

  261. 

  262. #if !CONFIG_VAAPI_1

  263.     } else if (priv->sei_cbr_workaround_needed) {

  264.         // Insert a zero-length header using the old SEI type.  This is

  265.         // required to avoid triggering broken behaviour on Intel platforms

  266.         // in CBR mode where an invalid SEI message is generated by the

  267.         // driver and inserted into the stream.

  268.         *data_len = 0;

  269.         *type = VAEncPackedHeaderH264_SEI;

  270.         priv->sei_cbr_workaround_needed = 0;

  271.         return 0;

  272. #endif

  273. 

  274.     } else {

  275.         return AVERROR_EOF;

  276.     }

  277. 

  278. fail:

  279.     ff_cbs_fragment_reset(au);

  280.     return err;

  281. }

  282. 

  283. static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)

  284. {

  285.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  286.     VAAPIEncodeH264Context           *priv = avctx->priv_data;

  287.     H264RawSPS                        *sps = &priv->raw_sps;

  288.     H264RawPPS                        *pps = &priv->raw_pps;

  289.     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;

  290.     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;

  291. 

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

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

  294. 

  295.     sps->nal_unit_header.nal_ref_idc   = 3;

  296.     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;

  297. 

  298.     sps->profile_idc = avctx->profile & 0xff;

  299. 

  300.     if (avctx->profile == FF_PROFILE_H264_CONSTRAINED_BASELINE ||

  301.         avctx->profile == FF_PROFILE_H264_MAIN)

  302.         sps->constraint_set1_flag = 1;

  303. 

  304.     if (avctx->profile == FF_PROFILE_H264_HIGH)

  305.         sps->constraint_set3_flag = ctx->gop_size == 1;

  306. 

  307.     if (avctx->profile == FF_PROFILE_H264_MAIN ||

  308.         avctx->profile == FF_PROFILE_H264_HIGH) {

  309.         sps->constraint_set4_flag = 1;

  310.         sps->constraint_set5_flag = ctx->b_per_p == 0;

  311.     }

  312. 

  313.     if (ctx->gop_size == 1)

  314.         priv->dpb_frames = 0;

  315.     else

  316.         priv->dpb_frames = 1 + ctx->max_b_depth;

  317. 

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

  319.         sps->level_idc = avctx->level;

  320.     } else {

  321.         const H264LevelDescriptor *level;

  322.         int framerate;

  323. 

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

  325.             framerate = avctx->framerate.num / avctx->framerate.den;

  326.         else

  327.             framerate = 0;

  328. 

  329.         level = ff_h264_guess_level(sps->profile_idc,

  330.                                     avctx->bit_rate,

  331.                                     framerate,

  332.                                     priv->mb_width  * 16,

  333.                                     priv->mb_height * 16,

  334.                                     priv->dpb_frames);

  335.         if (level) {

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

  337.             if (level->constraint_set3_flag)

  338.                 sps->constraint_set3_flag = 1;

  339.             sps->level_idc = level->level_idc;

  340.         } else {

  341.             av_log(avctx, AV_LOG_WARNING, "Stream will not conform "

  342.                    "to any level: using level 6.2.\n");

  343.             sps->level_idc = 62;

  344.         }

  345.     }

  346. 

  347.     sps->seq_parameter_set_id = 0;

  348.     sps->chroma_format_idc    = 1;

  349. 

  350.     sps->log2_max_frame_num_minus4 = 4;

  351.     sps->pic_order_cnt_type        = 0;

  352.     sps->log2_max_pic_order_cnt_lsb_minus4 = 4;

  353. 

  354.     sps->max_num_ref_frames = priv->dpb_frames;

  355. 

  356.     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;

  357.     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;

  358. 

  359.     sps->frame_mbs_only_flag = 1;

  360.     sps->direct_8x8_inference_flag = 1;

  361. 

  362.     if (avctx->width  != 16 * priv->mb_width ||

  363.         avctx->height != 16 * priv->mb_height) {

  364.         sps->frame_cropping_flag = 1;

  365. 

  366.         sps->frame_crop_left_offset   = 0;

  367.         sps->frame_crop_right_offset  =

  368.             (16 * priv->mb_width - avctx->width) / 2;

  369.         sps->frame_crop_top_offset    = 0;

  370.         sps->frame_crop_bottom_offset =

  371.             (16 * priv->mb_height - avctx->height) / 2;

  372.     } else {

  373.         sps->frame_cropping_flag = 0;

  374.     }

  375. 

  376.     sps->vui_parameters_present_flag = 1;

  377. 

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

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

  380.         static const AVRational sar_idc[] = {

  381.             {   0,  0 },

  382.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  383.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  384.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  385.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  386.         };

  387.         int num, den, i;

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

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

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

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

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

  393.                 sps->vui.aspect_ratio_idc = i;

  394.                 break;

  395.             }

  396.         }

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

  398.             sps->vui.aspect_ratio_idc = 255;

  399.             sps->vui.sar_width  = num;

  400.             sps->vui.sar_height = den;

  401.         }

  402.         sps->vui.aspect_ratio_info_present_flag = 1;

  403.     }

  404. 

  405.     // Unspecified video format, from table E-2.

  406.     sps->vui.video_format             = 5;

  407.     sps->vui.video_full_range_flag    =

  408.         avctx->color_range == AVCOL_RANGE_JPEG;

  409.     sps->vui.colour_primaries         = avctx->color_primaries;

  410.     sps->vui.transfer_characteristics = avctx->color_trc;

  411.     sps->vui.matrix_coefficients      = avctx->colorspace;

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

  413.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  414.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED)

  415.         sps->vui.colour_description_present_flag = 1;

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

  417.         sps->vui.colour_description_present_flag)

  418.         sps->vui.video_signal_type_present_flag = 1;

  419. 

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

  421.         sps->vui.chroma_loc_info_present_flag = 1;

  422.         sps->vui.chroma_sample_loc_type_top_field    =

  423.         sps->vui.chroma_sample_loc_type_bottom_field =

  424.             avctx->chroma_sample_location - 1;

  425.     }

  426. 

  427.     sps->vui.timing_info_present_flag = 1;

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

  429.         sps->vui.num_units_in_tick = avctx->framerate.den;

  430.         sps->vui.time_scale        = 2 * avctx->framerate.num;

  431.         sps->vui.fixed_frame_rate_flag = 1;

  432.     } else {

  433.         sps->vui.num_units_in_tick = avctx->time_base.num;

  434.         sps->vui.time_scale        = 2 * avctx->time_base.den;

  435.         sps->vui.fixed_frame_rate_flag = 0;

  436.     }

  437. 

  438.     if (priv->sei & SEI_TIMING) {

  439.         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;

  440.         H264RawSEIBufferingPeriod *bp = &priv->sei_buffering_period;

  441. 

  442.         sps->vui.nal_hrd_parameters_present_flag = 1;

  443. 

  444.         hrd->cpb_cnt_minus1 = 0;

  445. 

  446.         // Try to scale these to a sensible range so that the

  447.         // golomb encode of the value is not overlong.

  448.         hrd->bit_rate_scale =

  449.             av_clip_uintp2(av_log2(ctx->va_bit_rate) - 15 - 6, 4);

  450.         hrd->bit_rate_value_minus1[0] =

  451.             (ctx->va_bit_rate >> hrd->bit_rate_scale + 6) - 1;

  452. 

  453.         hrd->cpb_size_scale =

  454.             av_clip_uintp2(av_log2(ctx->hrd_params.buffer_size) - 15 - 4, 4);

  455.         hrd->cpb_size_value_minus1[0] =

  456.             (ctx->hrd_params.buffer_size >> hrd->cpb_size_scale + 4) - 1;

  457. 

  458.         // CBR mode as defined for the HRD cannot be achieved without filler

  459.         // data, so this flag cannot be set even with VAAPI CBR modes.

  460.         hrd->cbr_flag[0] = 0;

  461. 

  462.         hrd->initial_cpb_removal_delay_length_minus1 = 23;

  463.         hrd->cpb_removal_delay_length_minus1         = 23;

  464.         hrd->dpb_output_delay_length_minus1          = 7;

  465.         hrd->time_offset_length                      = 0;

  466. 

  467.         bp->seq_parameter_set_id = sps->seq_parameter_set_id;

  468. 

  469.         // This calculation can easily overflow 32 bits.

  470.         bp->nal.initial_cpb_removal_delay[0] = 90000 *

  471.             (uint64_t)ctx->hrd_params.initial_buffer_fullness /

  472.             ctx->hrd_params.buffer_size;

  473.         bp->nal.initial_cpb_removal_delay_offset[0] = 0;

  474.     } else {

  475.         sps->vui.nal_hrd_parameters_present_flag = 0;

  476.         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;

  477.     }

  478. 

  479.     sps->vui.bitstream_restriction_flag    = 1;

  480.     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;

  481.     sps->vui.log2_max_mv_length_horizontal = 15;

  482.     sps->vui.log2_max_mv_length_vertical   = 15;

  483.     sps->vui.max_num_reorder_frames        = ctx->max_b_depth;

  484.     sps->vui.max_dec_frame_buffering       = ctx->max_b_depth + 1;

  485. 

  486.     pps->nal_unit_header.nal_ref_idc = 3;

  487.     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;

  488. 

  489.     pps->pic_parameter_set_id = 0;

  490.     pps->seq_parameter_set_id = 0;

  491. 

  492.     pps->entropy_coding_mode_flag =

  493.         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||

  494.           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  495.           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);

  496.     if (!priv->coder && pps->entropy_coding_mode_flag)

  497.         pps->entropy_coding_mode_flag = 0;

  498. 

  499.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  500.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  501. 

  502.     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;

  503. 

  504.     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||

  505.         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  506.         sps->profile_idc == FF_PROFILE_H264_MAIN) {

  507.         pps->more_rbsp_data = 0;

  508.     } else {

  509.         pps->more_rbsp_data = 1;

  510. 

  511.         pps->transform_8x8_mode_flag = 1;

  512.     }

  513. 

  514.     *vseq = (VAEncSequenceParameterBufferH264) {

  515.         .seq_parameter_set_id = sps->seq_parameter_set_id,

  516.         .level_idc        = sps->level_idc,

  517.         .intra_period     = ctx->gop_size,

  518.         .intra_idr_period = ctx->gop_size,

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

  520. 

  521.         .bits_per_second       = ctx->va_bit_rate,

  522.         .max_num_ref_frames    = sps->max_num_ref_frames,

  523.         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,

  524.         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,

  525. 

  526.         .seq_fields.bits = {

  527.             .chroma_format_idc                 = sps->chroma_format_idc,

  528.             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,

  529.             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,

  530.             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,

  531.             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,

  532.             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,

  533.             .pic_order_cnt_type                = sps->pic_order_cnt_type,

  534.             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,

  535.             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,

  536.         },

  537. 

  538.         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,

  539.         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,

  540. 

  541.         .frame_cropping_flag      = sps->frame_cropping_flag,

  542.         .frame_crop_left_offset   = sps->frame_crop_left_offset,

  543.         .frame_crop_right_offset  = sps->frame_crop_right_offset,

  544.         .frame_crop_top_offset    = sps->frame_crop_top_offset,

  545.         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,

  546. 

  547.         .vui_parameters_present_flag = sps->vui_parameters_present_flag,

  548. 

  549.         .vui_fields.bits = {

  550.             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,

  551.             .timing_info_present_flag       = sps->vui.timing_info_present_flag,

  552.             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,

  553.             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,

  554.             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,

  555.         },

  556. 

  557.         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,

  558.         .sar_width         = sps->vui.sar_width,

  559.         .sar_height        = sps->vui.sar_height,

  560.         .num_units_in_tick = sps->vui.num_units_in_tick,

  561.         .time_scale        = sps->vui.time_scale,

  562.     };

  563. 

  564.     *vpic = (VAEncPictureParameterBufferH264) {

  565.         .CurrPic = {

  566.             .picture_id = VA_INVALID_ID,

  567.             .flags      = VA_PICTURE_H264_INVALID,

  568.         },

  569. 

  570.         .coded_buf = VA_INVALID_ID,

  571. 

  572.         .pic_parameter_set_id = pps->pic_parameter_set_id,

  573.         .seq_parameter_set_id = pps->seq_parameter_set_id,

  574. 

  575.         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,

  576.         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,

  577.         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,

  578. 

  579.         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,

  580.         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,

  581. 

  582.         .pic_fields.bits = {

  583.             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,

  584.             .weighted_pred_flag              = pps->weighted_pred_flag,

  585.             .weighted_bipred_idc             = pps->weighted_bipred_idc,

  586.             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,

  587.             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,

  588.             .deblocking_filter_control_present_flag =

  589.                 pps->deblocking_filter_control_present_flag,

  590.             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,

  591.             .pic_order_present_flag          =

  592.                 pps->bottom_field_pic_order_in_frame_present_flag,

  593.             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,

  594.         },

  595.     };

  596. 

  597.     return 0;

  598. }

  599. 

  600. static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,

  601.                                                  VAAPIEncodePicture *pic)

  602. {

  603.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  604.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

  605.     VAAPIEncodeH264Picture          *hpic = pic->priv_data;

  606.     VAAPIEncodePicture              *prev = pic->prev;

  607.     VAAPIEncodeH264Picture         *hprev = prev ? prev->priv_data : NULL;

  608.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  609.     int i;

  610. 

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

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

  613. 

  614.         hpic->frame_num      = 0;

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

  616.         hpic->idr_pic_id     = hprev ? hprev->idr_pic_id + 1 : 0;

  617. 

  618.         hpic->primary_pic_type = 0;

  619.         hpic->slice_type       = 7;

  620.     } else {

  621.         av_assert0(prev);

  622. 

  623.         hpic->frame_num = hprev->frame_num + prev->is_reference;

  624. 

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

  626.         hpic->idr_pic_id     = hprev->idr_pic_id;

  627. 

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

  629.             hpic->slice_type       = 7;

  630.             hpic->primary_pic_type = 0;

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

  632.             hpic->slice_type       = 5;

  633.             hpic->primary_pic_type = 1;

  634.         } else {

  635.             hpic->slice_type       = 6;

  636.             hpic->primary_pic_type = 2;

  637.         }

  638.     }

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

  640.     hpic->dpb_delay     = pic->display_order - pic->encode_order + ctx->max_b_depth;

  641.     hpic->cpb_delay     = pic->encode_order - hpic->last_idr_frame;

  642. 

  643.     if (priv->aud) {

  644.         priv->aud_needed = 1;

  645.         priv->raw_aud = (H264RawAUD) {

  646.             .nal_unit_header = {

  647.                 .nal_unit_type = H264_NAL_AUD,

  648.             },

  649.             .primary_pic_type  = hpic->primary_pic_type,

  650.         };

  651.     } else {

  652.         priv->aud_needed = 0;

  653.     }

  654. 

  655.     priv->sei_needed = 0;

  656. 

  657.     if (priv->sei & SEI_IDENTIFIER && pic->encode_order == 0)

  658.         priv->sei_needed |= SEI_IDENTIFIER;

  659. #if !CONFIG_VAAPI_1

  660.     if (ctx->va_rc_mode == VA_RC_CBR)

  661.         priv->sei_cbr_workaround_needed = 1;

  662. #endif

  663. 

  664.     if (priv->sei & SEI_TIMING) {

  665.         priv->sei_pic_timing = (H264RawSEIPicTiming) {

  666.             .cpb_removal_delay = 2 * hpic->cpb_delay,

  667.             .dpb_output_delay  = 2 * hpic->dpb_delay,

  668.         };

  669. 

  670.         priv->sei_needed |= SEI_TIMING;

  671.     }

  672. 

  673.     if (priv->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {

  674.         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {

  675.             .recovery_frame_cnt = 0,

  676.             .exact_match_flag   = 1,

  677.             .broken_link_flag   = ctx->b_per_p > 0,

  678.         };

  679. 

  680.         priv->sei_needed |= SEI_RECOVERY_POINT;

  681.     }

  682. 

  683.     vpic->CurrPic = (VAPictureH264) {

  684.         .picture_id          = pic->recon_surface,

  685.         .frame_idx           = hpic->frame_num,

  686.         .flags               = 0,

  687.         .TopFieldOrderCnt    = hpic->pic_order_cnt,

  688.         .BottomFieldOrderCnt = hpic->pic_order_cnt,

  689.     };

  690. 

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

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

  693.         VAAPIEncodeH264Picture *href;

  694. 

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

  696.         href = ref->priv_data;

  697. 

  698.         vpic->ReferenceFrames[i] = (VAPictureH264) {

  699.             .picture_id          = ref->recon_surface,

  700.             .frame_idx           = href->frame_num,

  701.             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,

  702.             .TopFieldOrderCnt    = href->pic_order_cnt,

  703.             .BottomFieldOrderCnt = href->pic_order_cnt,

  704.         };

  705.     }

  706.     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {

  707.         vpic->ReferenceFrames[i] = (VAPictureH264) {

  708.             .picture_id = VA_INVALID_ID,

  709.             .flags      = VA_PICTURE_H264_INVALID,

  710.         };

  711.     }

  712. 

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

  714. 

  715.     vpic->frame_num = hpic->frame_num;

  716. 

  717.     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);

  718.     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);

  719. 

  720.     return 0;

  721. }

  722. 

  723. static void vaapi_encode_h264_default_ref_pic_list(AVCodecContext *avctx,

  724.                                                    VAAPIEncodePicture *pic,

  725.                                                    VAAPIEncodePicture **rpl0,

  726.                                                    VAAPIEncodePicture **rpl1,

  727.                                                    int *rpl_size)

  728. {

  729.     VAAPIEncodePicture *prev;

  730.     VAAPIEncodeH264Picture *hp, *hn, *hc;

  731.     int i, j, n = 0;

  732. 

  733.     prev = pic->prev;

  734.     av_assert0(prev);

  735.     hp = pic->priv_data;

  736. 

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

  738.         hn = prev->dpb[i]->priv_data;

  739.         av_assert0(hn->frame_num < hp->frame_num);

  740. 

  741.         if (pic->type == PICTURE_TYPE_P) {

  742.             for (j = n; j > 0; j--) {

  743.                 hc = rpl0[j - 1]->priv_data;

  744.                 av_assert0(hc->frame_num != hn->frame_num);

  745.                 if (hc->frame_num > hn->frame_num)

  746.                     break;

  747.                 rpl0[j] = rpl0[j - 1];

  748.             }

  749.             rpl0[j] = prev->dpb[i];

  750. 

  751.         } else if (pic->type == PICTURE_TYPE_B) {

  752.             for (j = n; j > 0; j--) {

  753.                 hc = rpl0[j - 1]->priv_data;

  754.                 av_assert0(hc->pic_order_cnt != hp->pic_order_cnt);

  755.                 if (hc->pic_order_cnt < hp->pic_order_cnt) {

  756.                     if (hn->pic_order_cnt > hp->pic_order_cnt ||

  757.                         hn->pic_order_cnt < hc->pic_order_cnt)

  758.                         break;

  759.                 } else {

  760.                     if (hn->pic_order_cnt > hc->pic_order_cnt)

  761.                         break;

  762.                 }

  763.                 rpl0[j] = rpl0[j - 1];

  764.             }

  765.             rpl0[j] = prev->dpb[i];

  766. 

  767.             for (j = n; j > 0; j--) {

  768.                 hc = rpl1[j - 1]->priv_data;

  769.                 av_assert0(hc->pic_order_cnt != hp->pic_order_cnt);

  770.                 if (hc->pic_order_cnt > hp->pic_order_cnt) {

  771.                     if (hn->pic_order_cnt < hp->pic_order_cnt ||

  772.                         hn->pic_order_cnt > hc->pic_order_cnt)

  773.                         break;

  774.                 } else {

  775.                     if (hn->pic_order_cnt < hc->pic_order_cnt)

  776.                         break;

  777.                 }

  778.                 rpl1[j] = rpl1[j - 1];

  779.             }

  780.             rpl1[j] = prev->dpb[i];

  781.         }

  782. 

  783.         ++n;

  784.     }

  785. 

  786.     if (pic->type == PICTURE_TYPE_B) {

  787.         for (i = 0; i < n; i++) {

  788.             if (rpl0[i] != rpl1[i])

  789.                 break;

  790.         }

  791.         if (i == n)

  792.             FFSWAP(VAAPIEncodePicture*, rpl1[0], rpl1[1]);

  793.     }

  794. 

  795.     if (pic->type == PICTURE_TYPE_P ||

  796.         pic->type == PICTURE_TYPE_B) {

  797.         av_log(avctx, AV_LOG_DEBUG, "Default RefPicList0 for fn=%d/poc=%d:",

  798.                hp->frame_num, hp->pic_order_cnt);

  799.         for (i = 0; i < n; i++) {

  800.             hn = rpl0[i]->priv_data;

  801.             av_log(avctx, AV_LOG_DEBUG, "  fn=%d/poc=%d",

  802.                    hn->frame_num, hn->pic_order_cnt);

  803.         }

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

  805.     }

  806.     if (pic->type == PICTURE_TYPE_B) {

  807.         av_log(avctx, AV_LOG_DEBUG, "Default RefPicList1 for fn=%d/poc=%d:",

  808.                hp->frame_num, hp->pic_order_cnt);

  809.         for (i = 0; i < n; i++) {

  810.             hn = rpl1[i]->priv_data;

  811.             av_log(avctx, AV_LOG_DEBUG, "  fn=%d/poc=%d",

  812.                    hn->frame_num, hn->pic_order_cnt);

  813.         }

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

  815.     }

  816. 

  817.     *rpl_size = n;

  818. }

  819. 

  820. static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,

  821.                                                VAAPIEncodePicture *pic,

  822.                                                VAAPIEncodeSlice *slice)

  823. {

  824.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

  825.     VAAPIEncodeH264Picture          *hpic = pic->priv_data;

  826.     VAAPIEncodePicture              *prev = pic->prev;

  827.     H264RawSPS                       *sps = &priv->raw_sps;

  828.     H264RawPPS                       *pps = &priv->raw_pps;

  829.     H264RawSliceHeader                *sh = &priv->raw_slice.header;

  830.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  831.     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;

  832.     int i, j;

  833. 

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

  835.         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;

  836.         sh->nal_unit_header.nal_ref_idc   = 3;

  837.     } else {

  838.         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;

  839.         sh->nal_unit_header.nal_ref_idc   = pic->is_reference;

  840.     }

  841. 

  842.     sh->first_mb_in_slice = slice->block_start;

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

  844. 

  845.     sh->pic_parameter_set_id = pps->pic_parameter_set_id;

  846. 

  847.     sh->frame_num = hpic->frame_num &

  848.         ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

  849.     sh->idr_pic_id = hpic->idr_pic_id;

  850.     sh->pic_order_cnt_lsb = hpic->pic_order_cnt &

  851.         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);

  852. 

  853.     sh->direct_spatial_mv_pred_flag = 1;

  854. 

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

  856.         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);

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

  858.         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);

  859.     else

  860.         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);

  861. 

  862.     if (pic->is_reference && pic->type != PICTURE_TYPE_IDR) {

  863.         VAAPIEncodePicture *discard_list[MAX_DPB_SIZE];

  864.         int discard = 0, keep = 0;

  865. 

  866.         // Discard everything which is in the DPB of the previous frame but

  867.         // not in the DPB of this one.

  868.         for (i = 0; i < prev->nb_dpb_pics; i++) {

  869.             for (j = 0; j < pic->nb_dpb_pics; j++) {

  870.                 if (prev->dpb[i] == pic->dpb[j])

  871.                     break;

  872.             }

  873.             if (j == pic->nb_dpb_pics) {

  874.                 discard_list[discard] = prev->dpb[i];

  875.                 ++discard;

  876.             } else {

  877.                 ++keep;

  878.             }

  879.         }

  880.         av_assert0(keep <= priv->dpb_frames);

  881. 

  882.         if (discard == 0) {

  883.             sh->adaptive_ref_pic_marking_mode_flag = 0;

  884.         } else {

  885.             sh->adaptive_ref_pic_marking_mode_flag = 1;

  886.             for (i = 0; i < discard; i++) {

  887.                 VAAPIEncodeH264Picture *old = discard_list[i]->priv_data;

  888.                 av_assert0(old->frame_num < hpic->frame_num);

  889.                 sh->mmco[i].memory_management_control_operation = 1;

  890.                 sh->mmco[i].difference_of_pic_nums_minus1 =

  891.                     hpic->frame_num - old->frame_num - 1;

  892.             }

  893.             sh->mmco[i].memory_management_control_operation = 0;

  894.         }

  895.     }

  896. 

  897.     // If the intended references are not the first entries of RefPicListN

  898.     // by default, use ref-pic-list-modification to move them there.

  899.     if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {

  900.         VAAPIEncodePicture *def_l0[MAX_DPB_SIZE], *def_l1[MAX_DPB_SIZE];

  901.         VAAPIEncodeH264Picture *href;

  902.         int n;

  903. 

  904.         vaapi_encode_h264_default_ref_pic_list(avctx, pic,

  905.                                                def_l0, def_l1, &n);

  906. 

  907.         if (pic->type == PICTURE_TYPE_P) {

  908.             int need_rplm = 0;

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

  910.                 av_assert0(pic->refs[i]);

  911.                 if (pic->refs[i] != def_l0[i])

  912.                     need_rplm = 1;

  913.             }

  914. 

  915.             sh->ref_pic_list_modification_flag_l0 = need_rplm;

  916.             if (need_rplm) {

  917.                 int pic_num = hpic->frame_num;

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

  919.                     href = pic->refs[i]->priv_data;

  920.                     av_assert0(href->frame_num != pic_num);

  921.                     if (href->frame_num < pic_num) {

  922.                         sh->rplm_l0[i].modification_of_pic_nums_idc = 0;

  923.                         sh->rplm_l0[i].abs_diff_pic_num_minus1 =

  924.                             pic_num - href->frame_num - 1;

  925.                     } else {

  926.                         sh->rplm_l0[i].modification_of_pic_nums_idc = 1;

  927.                         sh->rplm_l0[i].abs_diff_pic_num_minus1 =

  928.                             href->frame_num - pic_num - 1;

  929.                     }

  930.                     pic_num = href->frame_num;

  931.                 }

  932.                 sh->rplm_l0[i].modification_of_pic_nums_idc = 3;

  933.             }

  934. 

  935.         } else {

  936.             int need_rplm_l0 = 0, need_rplm_l1 = 0;

  937.             int n0 = 0, n1 = 0;

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

  939.                 av_assert0(pic->refs[i]);

  940.                 href = pic->refs[i]->priv_data;

  941.                 av_assert0(href->pic_order_cnt != hpic->pic_order_cnt);

  942.                 if (href->pic_order_cnt < hpic->pic_order_cnt) {

  943.                     if (pic->refs[i] != def_l0[n0])

  944.                         need_rplm_l0 = 1;

  945.                     ++n0;

  946.                 } else {

  947.                     if (pic->refs[i] != def_l1[n1])

  948.                         need_rplm_l1 = 1;

  949.                     ++n1;

  950.                 }

  951.             }

  952. 

  953.             sh->ref_pic_list_modification_flag_l0 = need_rplm_l0;

  954.             if (need_rplm_l0) {

  955.                 int pic_num = hpic->frame_num;

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

  957.                     href = pic->refs[i]->priv_data;

  958.                     if (href->pic_order_cnt > hpic->pic_order_cnt)

  959.                         continue;

  960.                     av_assert0(href->frame_num != pic_num);

  961.                     if (href->frame_num < pic_num) {

  962.                         sh->rplm_l0[j].modification_of_pic_nums_idc = 0;

  963.                         sh->rplm_l0[j].abs_diff_pic_num_minus1 =

  964.                             pic_num - href->frame_num - 1;

  965.                     } else {

  966.                         sh->rplm_l0[j].modification_of_pic_nums_idc = 1;

  967.                         sh->rplm_l0[j].abs_diff_pic_num_minus1 =

  968.                             href->frame_num - pic_num - 1;

  969.                     }

  970.                     pic_num = href->frame_num;

  971.                     ++j;

  972.                 }

  973.                 av_assert0(j == n0);

  974.                 sh->rplm_l0[j].modification_of_pic_nums_idc = 3;

  975.             }

  976. 

  977.             sh->ref_pic_list_modification_flag_l1 = need_rplm_l1;

  978.             if (need_rplm_l1) {

  979.                 int pic_num = hpic->frame_num;

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

  981.                     href = pic->refs[i]->priv_data;

  982.                     if (href->pic_order_cnt < hpic->pic_order_cnt)

  983.                         continue;

  984.                     av_assert0(href->frame_num != pic_num);

  985.                     if (href->frame_num < pic_num) {

  986.                         sh->rplm_l1[j].modification_of_pic_nums_idc = 0;

  987.                         sh->rplm_l1[j].abs_diff_pic_num_minus1 =

  988.                             pic_num - href->frame_num - 1;

  989.                     } else {

  990.                         sh->rplm_l1[j].modification_of_pic_nums_idc = 1;

  991.                         sh->rplm_l1[j].abs_diff_pic_num_minus1 =

  992.                             href->frame_num - pic_num - 1;

  993.                     }

  994.                     pic_num = href->frame_num;

  995.                     ++j;

  996.                 }

  997.                 av_assert0(j == n1);

  998.                 sh->rplm_l1[j].modification_of_pic_nums_idc = 3;

  999.             }

  1000.         }

  1001.     }

  1002. 

  1003.     vslice->macroblock_address = slice->block_start;

  1004.     vslice->num_macroblocks    = slice->block_size;

  1005. 

  1006.     vslice->macroblock_info = VA_INVALID_ID;

  1007. 

  1008.     vslice->slice_type           = sh->slice_type % 5;

  1009.     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;

  1010.     vslice->idr_pic_id           = sh->idr_pic_id;

  1011. 

  1012.     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;

  1013. 

  1014.     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;

  1015. 

  1016.     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {

  1017.         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;

  1018.         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;

  1019.         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;

  1020.         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;

  1021.     }

  1022. 

  1023.     av_assert0(pic->nb_refs <= 2);

  1024.     if (pic->nb_refs >= 1) {

  1025.         // Backward reference for P- or B-frame.

  1026.         av_assert0(pic->type == PICTURE_TYPE_P ||

  1027.                    pic->type == PICTURE_TYPE_B);

  1028.         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];

  1029.     }

  1030.     if (pic->nb_refs >= 2) {

  1031.         // Forward reference for B-frame.

  1032.         av_assert0(pic->type == PICTURE_TYPE_B);

  1033.         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];

  1034.     }

  1035. 

  1036.     vslice->slice_qp_delta = sh->slice_qp_delta;

  1037. 

  1038.     return 0;

  1039. }

  1040. 

  1041. static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)

  1042. {

  1043.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1044.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1045.     int err;

  1046. 

  1047.     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);

  1048.     if (err < 0)

  1049.         return err;

  1050. 

  1051.     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;

  1052.     priv->mb_height = FFALIGN(avctx->height, 16) / 16;

  1053. 

  1054.     if (ctx->va_rc_mode == VA_RC_CQP) {

  1055.         priv->fixed_qp_p = av_clip(ctx->rc_quality, 1, 51);

  1056.         if (avctx->i_quant_factor > 0.0)

  1057.             priv->fixed_qp_idr =

  1058.                 av_clip((avctx->i_quant_factor * priv->fixed_qp_p +

  1059.                          avctx->i_quant_offset) + 0.5, 1, 51);

  1060.         else

  1061.             priv->fixed_qp_idr = priv->fixed_qp_p;

  1062.         if (avctx->b_quant_factor > 0.0)

  1063.             priv->fixed_qp_b =

  1064.                 av_clip((avctx->b_quant_factor * priv->fixed_qp_p +

  1065.                          avctx->b_quant_offset) + 0.5, 1, 51);

  1066.         else

  1067.             priv->fixed_qp_b = priv->fixed_qp_p;

  1068. 

  1069.         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "

  1070.                "%d / %d / %d for IDR- / P- / B-frames.\n",

  1071.                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);

  1072. 

  1073.     } else {

  1074.         // These still need to be  set for pic_init_qp/slice_qp_delta.

  1075.         priv->fixed_qp_idr = 26;

  1076.         priv->fixed_qp_p   = 26;

  1077.         priv->fixed_qp_b   = 26;

  1078.     }

  1079. 

  1080.     if (!ctx->rc_mode->hrd) {

  1081.         // Timing SEI requires a mode respecting HRD parameters.

  1082.         priv->sei &= ~SEI_TIMING;

  1083.     }

  1084. 

  1085.     if (priv->sei & SEI_IDENTIFIER) {

  1086.         const char *lavc  = LIBAVCODEC_IDENT;

  1087.         const char *vaapi = VA_VERSION_S;

  1088.         const char *driver;

  1089.         int len;

  1090. 

  1091.         memcpy(priv->sei_identifier.uuid_iso_iec_11578,

  1092.                vaapi_encode_h264_sei_identifier_uuid,

  1093.                sizeof(priv->sei_identifier.uuid_iso_iec_11578));

  1094. 

  1095.         driver = vaQueryVendorString(ctx->hwctx->display);

  1096.         if (!driver)

  1097.             driver = "unknown driver";

  1098. 

  1099.         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);

  1100.         if (len >= 0) {

  1101.             priv->sei_identifier_string = av_malloc(len + 1);

  1102.             if (!priv->sei_identifier_string)

  1103.                 return AVERROR(ENOMEM);

  1104. 

  1105.             snprintf(priv->sei_identifier_string, len + 1,

  1106.                      "%s / VAAPI %s / %s", lavc, vaapi, driver);

  1107. 

  1108.             priv->sei_identifier.data        = priv->sei_identifier_string;

  1109.             priv->sei_identifier.data_length = len + 1;

  1110.         }

  1111.     }

  1112. 

  1113.     ctx->roi_quant_range = 51 + 6 * (ctx->profile->depth - 8);

  1114. 

  1115.     return 0;

  1116. }

  1117. 

  1118. static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {

  1119.     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },

  1120.     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },

  1121.     { FF_PROFILE_H264_CONSTRAINED_BASELINE,

  1122.                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },

  1123.     { FF_PROFILE_UNKNOWN }

  1124. };

  1125. 

  1126. static const VAAPIEncodeType vaapi_encode_type_h264 = {

  1127.     .profiles              = vaapi_encode_h264_profiles,

  1128. 

  1129.     .flags                 = FLAG_SLICE_CONTROL |

  1130.                              FLAG_B_PICTURES |

  1131.                              FLAG_B_PICTURE_REFERENCES |

  1132.                              FLAG_NON_IDR_KEY_PICTURES,

  1133. 

  1134.     .default_quality       = 20,

  1135. 

  1136.     .configure             = &vaapi_encode_h264_configure,

  1137. 

  1138.     .picture_priv_data_size = sizeof(VAAPIEncodeH264Picture),

  1139. 

  1140.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),

  1141.     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,

  1142. 

  1143.     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),

  1144.     .init_picture_params   = &vaapi_encode_h264_init_picture_params,

  1145. 

  1146.     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),

  1147.     .init_slice_params     = &vaapi_encode_h264_init_slice_params,

  1148. 

  1149.     .sequence_header_type  = VAEncPackedHeaderSequence,

  1150.     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,

  1151. 

  1152.     .slice_header_type     = VAEncPackedHeaderH264_Slice,

  1153.     .write_slice_header    = &vaapi_encode_h264_write_slice_header,

  1154. 

  1155.     .write_extra_header    = &vaapi_encode_h264_write_extra_header,

  1156. };

  1157. 

  1158. static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)

  1159. {

  1160.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1161.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1162. 

  1163.     ctx->codec = &vaapi_encode_type_h264;

  1164. 

  1165.     if (avctx->profile == FF_PROFILE_UNKNOWN)

  1166.         avctx->profile = priv->profile;

  1167.     if (avctx->level == FF_LEVEL_UNKNOWN)

  1168.         avctx->level = priv->level;

  1169.     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)

  1170.         avctx->compression_level = priv->quality;

  1171. 

  1172.     // Reject unsupported profiles.

  1173.     switch (avctx->profile) {

  1174.     case FF_PROFILE_H264_BASELINE:

  1175.         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "

  1176.                "supported, using constrained baseline profile instead.\n");

  1177.         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;

  1178.         break;

  1179.     case FF_PROFILE_H264_EXTENDED:

  1180.         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "

  1181.                "is not supported.\n");

  1182.         return AVERROR_PATCHWELCOME;

  1183.     case FF_PROFILE_H264_HIGH_10:

  1184.     case FF_PROFILE_H264_HIGH_10_INTRA:

  1185.         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "

  1186.                "are not supported.\n");

  1187.         return AVERROR_PATCHWELCOME;

  1188.     case FF_PROFILE_H264_HIGH_422:

  1189.     case FF_PROFILE_H264_HIGH_422_INTRA:

  1190.     case FF_PROFILE_H264_HIGH_444:

  1191.     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:

  1192.     case FF_PROFILE_H264_HIGH_444_INTRA:

  1193.     case FF_PROFILE_H264_CAVLC_444:

  1194.         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "

  1195.                "are not supported.\n");

  1196.         return AVERROR_PATCHWELCOME;

  1197.     }

  1198. 

  1199.     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {

  1200.         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "

  1201.                "in 8-bit unsigned integer.\n", avctx->level);

  1202.         return AVERROR(EINVAL);

  1203.     }

  1204. 

  1205.     ctx->desired_packed_headers =

  1206.         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.

  1207.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  1208.         VA_ENC_PACKED_HEADER_MISC;      // SEI.

  1209. 

  1210.     ctx->surface_width  = FFALIGN(avctx->width,  16);

  1211.     ctx->surface_height = FFALIGN(avctx->height, 16);

  1212. 

  1213.     ctx->slice_block_height = ctx->slice_block_width = 16;

  1214. 

  1215.     if (priv->qp > 0)

  1216.         ctx->explicit_qp = priv->qp;

  1217. 

  1218.     return ff_vaapi_encode_init(avctx);

  1219. }

  1220. 

  1221. static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)

  1222. {

  1223.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1224. 

  1225.     ff_cbs_fragment_free(&priv->current_access_unit);

  1226.     ff_cbs_close(&priv->cbc);

  1227.     av_freep(&priv->sei_identifier_string);

  1228. 

  1229.     return ff_vaapi_encode_close(avctx);

  1230. }

  1231. 

  1232. #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)

  1233. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  1234. static const AVOption vaapi_encode_h264_options[] = {

  1235.     VAAPI_ENCODE_COMMON_OPTIONS,

  1236.     VAAPI_ENCODE_RC_OPTIONS,

  1237. 

  1238.     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",

  1239.       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },

  1240.     { "quality", "Set encode quality (trades off against speed, higher is faster)",

  1241.       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },

  1242.     { "coder", "Entropy coder type",

  1243.       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },

  1244.         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1245.         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1246.         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1247.         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1248. 

  1249.     { "aud", "Include AUD",

  1250.       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },

  1251. 

  1252.     { "sei", "Set SEI to include",

  1253.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

  1254.       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },

  1255.       0, INT_MAX, FLAGS, "sei" },

  1256.     { "identifier", "Include encoder version identifier",

  1257.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },

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

  1259.     { "timing", "Include timing parameters (buffering_period and pic_timing)",

  1260.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },

  1261.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1262.     { "recovery_point", "Include recovery points where appropriate",

  1263.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },

  1264.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1265. 

  1266.     { "profile", "Set profile (profile_idc and constraint_set*_flag)",

  1267.       OFFSET(profile), AV_OPT_TYPE_INT,

  1268.       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },

  1269. 

  1270. #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \

  1271.       { .i64 = value }, 0, 0, FLAGS, "profile"

  1272.     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },

  1273.     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },

  1274.     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },

  1275. #undef PROFILE

  1276. 

  1277.     { "level", "Set level (level_idc)",

  1278.       OFFSET(level), AV_OPT_TYPE_INT,

  1279.       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },

  1280. 

  1281. #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \

  1282.       { .i64 = value }, 0, 0, FLAGS, "level"

  1283.     { LEVEL("1",   10) },

  1284.     { LEVEL("1.1", 11) },

  1285.     { LEVEL("1.2", 12) },

  1286.     { LEVEL("1.3", 13) },

  1287.     { LEVEL("2",   20) },

  1288.     { LEVEL("2.1", 21) },

  1289.     { LEVEL("2.2", 22) },

  1290.     { LEVEL("3",   30) },

  1291.     { LEVEL("3.1", 31) },

  1292.     { LEVEL("3.2", 32) },

  1293.     { LEVEL("4",   40) },

  1294.     { LEVEL("4.1", 41) },

  1295.     { LEVEL("4.2", 42) },

  1296.     { LEVEL("5",   50) },

  1297.     { LEVEL("5.1", 51) },

  1298.     { LEVEL("5.2", 52) },

  1299.     { LEVEL("6",   60) },

  1300.     { LEVEL("6.1", 61) },

  1301.     { LEVEL("6.2", 62) },

  1302. #undef LEVEL

  1303. 

  1304.     { NULL },

  1305. };

  1306. 

  1307. static const AVCodecDefault vaapi_encode_h264_defaults[] = {

  1308.     { "b",              "0"   },

  1309.     { "bf",             "2"   },

  1310.     { "g",              "120" },

  1311.     { "i_qfactor",      "1"   },

  1312.     { "i_qoffset",      "0"   },

  1313.     { "b_qfactor",      "6/5" },

  1314.     { "b_qoffset",      "0"   },

  1315.     { "qmin",           "-1"  },

  1316.     { "qmax",           "-1"  },

  1317.     { NULL },

  1318. };

  1319. 

  1320. static const AVClass vaapi_encode_h264_class = {

  1321.     .class_name = "h264_vaapi",

  1322.     .item_name  = av_default_item_name,

  1323.     .option     = vaapi_encode_h264_options,

  1324.     .version    = LIBAVUTIL_VERSION_INT,

  1325. };

  1326. 

  1327. AVCodec ff_h264_vaapi_encoder = {

  1328.     .name           = "h264_vaapi",

  1329.     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),

  1330.     .type           = AVMEDIA_TYPE_VIDEO,

  1331.     .id             = AV_CODEC_ID_H264,

  1332.     .priv_data_size = sizeof(VAAPIEncodeH264Context),

  1333.     .init           = &vaapi_encode_h264_init,

  1334.     .receive_packet = &ff_vaapi_encode_receive_packet,

  1335.     .close          = &vaapi_encode_h264_close,

  1336.     .priv_class     = &vaapi_encode_h264_class,

  1337.     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,

  1338.     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,

  1339.     .defaults       = vaapi_encode_h264_defaults,

  1340.     .pix_fmts = (const enum AVPixelFormat[]) {

  1341.         AV_PIX_FMT_VAAPI,

  1342.         AV_PIX_FMT_NONE,

  1343.     },

  1344.     .hw_configs     = ff_vaapi_encode_hw_configs,

  1345.     .wrapper_name   = "vaapi",

  1346. };