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FFmpeg/libavcodec/vaapi_encode_h264.c

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  1. /*

  2.  * This file is part of Libav.

  3.  *

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

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

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

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

  8.  *

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

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

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

  12.  * Lesser General Public License for more details.

  13.  *

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

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

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

  17.  */

  18. 

  19. #include <string.h>

  20. 

  21. #include <va/va.h>

  22. #include <va/va_enc_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_sei.h"

  34. #include "internal.h"

  35. #include "vaapi_encode.h"

  36. 

  37. enum {

  38.     SEI_TIMING         = 0x01,

  39.     SEI_IDENTIFIER     = 0x02,

  40.     SEI_RECOVERY_POINT = 0x04,

  41. };

  42. 

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

  44. static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = {

  45.     0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,

  46.     0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,

  47. };

  48. 

  49. typedef struct VAAPIEncodeH264Context {

  50.     int mb_width;

  51.     int mb_height;

  52. 

  53.     int fixed_qp_idr;

  54.     int fixed_qp_p;

  55.     int fixed_qp_b;

  56. 

  57.     H264RawAUD aud;

  58.     H264RawSPS sps;

  59.     H264RawPPS pps;

  60.     H264RawSEI sei;

  61.     H264RawSlice slice;

  62. 

  63.     H264RawSEIBufferingPeriod buffering_period;

  64.     H264RawSEIPicTiming pic_timing;

  65.     H264RawSEIRecoveryPoint recovery_point;

  66.     H264RawSEIUserDataUnregistered identifier;

  67.     char *identifier_string;

  68. 

  69.     int frame_num;

  70.     int pic_order_cnt;

  71.     int next_frame_num;

  72.     int64_t last_idr_frame;

  73.     int64_t idr_pic_count;

  74. 

  75.     int primary_pic_type;

  76.     int slice_type;

  77. 

  78.     int cpb_delay;

  79.     int dpb_delay;

  80. 

  81.     CodedBitstreamContext cbc;

  82.     CodedBitstreamFragment current_access_unit;

  83.     int aud_needed;

  84.     int sei_needed;

  85. } VAAPIEncodeH264Context;

  86. 

  87. typedef struct VAAPIEncodeH264Options {

  88.     int qp;

  89.     int quality;

  90.     int low_power;

  91.     int aud;

  92.     int sei;

  93. } VAAPIEncodeH264Options;

  94. 

  95. 

  96. static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,

  97.                                                char *data, size_t *data_len,

  98.                                                CodedBitstreamFragment *au)

  99. {

  100.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  101.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  102.     int err;

  103. 

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

  105.     if (err < 0) {

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

  107.         return err;

  108.     }

  109. 

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

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

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

  113.                8 * au->data_size - au->data_bit_padding);

  114.         return AVERROR(ENOSPC);

  115.     }

  116. 

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

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

  119. 

  120.     return 0;

  121. }

  122. 

  123. static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,

  124.                                      CodedBitstreamFragment *au,

  125.                                      void *nal_unit)

  126. {

  127.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  128.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  129.     H264RawNALUnitHeader *header = nal_unit;

  130.     int err;

  131. 

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

  133.                                      header->nal_unit_type, nal_unit);

  134.     if (err < 0) {

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

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

  137.         return err;

  138.     }

  139. 

  140.     return 0;

  141. }

  142. 

  143. static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,

  144.                                                    char *data, size_t *data_len)

  145. {

  146.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  147.     VAAPIEncodeH264Context *priv = ctx->priv_data;

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

  149.     int err;

  150. 

  151.     if (priv->aud_needed) {

  152.         err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);

  153.         if (err < 0)

  154.             goto fail;

  155.         priv->aud_needed = 0;

  156.     }

  157. 

  158.     err = vaapi_encode_h264_add_nal(avctx, au, &priv->sps);

  159.     if (err < 0)

  160.         goto fail;

  161. 

  162.     err = vaapi_encode_h264_add_nal(avctx, au, &priv->pps);

  163.     if (err < 0)

  164.         goto fail;

  165. 

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

  167. fail:

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

  169.     return err;

  170. }

  171. 

  172. static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,

  173.                                                 VAAPIEncodePicture *pic,

  174.                                                 VAAPIEncodeSlice *slice,

  175.                                                 char *data, size_t *data_len)

  176. {

  177.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  178.     VAAPIEncodeH264Context *priv = ctx->priv_data;

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

  180.     int err;

  181. 

  182.     if (priv->aud_needed) {

  183.         err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);

  184.         if (err < 0)

  185.             goto fail;

  186.         priv->aud_needed = 0;

  187.     }

  188. 

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

  190.     if (err < 0)

  191.         goto fail;

  192. 

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

  194. fail:

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

  196.     return err;

  197. }

  198. 

  199. static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,

  200.                                                 VAAPIEncodePicture *pic,

  201.                                                 int index, int *type,

  202.                                                 char *data, size_t *data_len)

  203. {

  204.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  205.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  206.     VAAPIEncodeH264Options  *opt = ctx->codec_options;

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

  208.     int err, i;

  209. 

  210.     if (priv->sei_needed) {

  211.         if (priv->aud_needed) {

  212.             vaapi_encode_h264_add_nal(avctx, au, &priv->aud);

  213.             priv->aud_needed = 0;

  214.         }

  215. 

  216.         memset(&priv->sei, 0, sizeof(priv->sei));

  217.         priv->sei.nal_unit_header.nal_unit_type = H264_NAL_SEI;

  218. 

  219.         i = 0;

  220.         if (pic->encode_order == 0 && opt->sei & SEI_IDENTIFIER) {

  221.             priv->sei.payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;

  222.             priv->sei.payload[i].payload.user_data_unregistered = priv->identifier;

  223.             ++i;

  224.         }

  225.         if (opt->sei & SEI_TIMING) {

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

  227.                 priv->sei.payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;

  228.                 priv->sei.payload[i].payload.buffering_period = priv->buffering_period;

  229.                 ++i;

  230.             }

  231.             priv->sei.payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;

  232.             priv->sei.payload[i].payload.pic_timing = priv->pic_timing;

  233.             ++i;

  234.         }

  235.         if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {

  236.             priv->sei.payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;

  237.             priv->sei.payload[i].payload.recovery_point = priv->recovery_point;

  238.             ++i;

  239.         }

  240. 

  241.         priv->sei.payload_count = i;

  242.         av_assert0(priv->sei.payload_count > 0);

  243. 

  244.         err = vaapi_encode_h264_add_nal(avctx, au, &priv->sei);

  245.         if (err < 0)

  246.             goto fail;

  247.         priv->sei_needed = 0;

  248. 

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

  250.         if (err < 0)

  251.             goto fail;

  252. 

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

  254. 

  255.         *type = VAEncPackedHeaderH264_SEI;

  256.         return 0;

  257.     } else {

  258.         return AVERROR_EOF;

  259.     }

  260. 

  261. fail:

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

  263.     return err;

  264. }

  265. 

  266. static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)

  267. {

  268.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  269.     VAAPIEncodeH264Context           *priv = ctx->priv_data;

  270.     VAAPIEncodeH264Options            *opt = ctx->codec_options;

  271.     H264RawSPS                        *sps = &priv->sps;

  272.     H264RawPPS                        *pps = &priv->pps;

  273.     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;

  274.     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;

  275. 

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

  277.            sizeof(priv->current_access_unit));

  278. 

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

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

  281. 

  282.     sps->nal_unit_header.nal_ref_idc   = 3;

  283.     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;

  284. 

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

  286.     sps->constraint_set1_flag =

  287.         !!(avctx->profile & FF_PROFILE_H264_CONSTRAINED);

  288.     sps->constraint_set3_flag =

  289.         !!(avctx->profile & FF_PROFILE_H264_INTRA);

  290. 

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

  292. 

  293.     sps->seq_parameter_set_id = 0;

  294.     sps->chroma_format_idc    = 1;

  295. 

  296.     sps->log2_max_frame_num_minus4 = 4;

  297.     sps->pic_order_cnt_type        = 0;

  298.     sps->log2_max_pic_order_cnt_lsb_minus4 =

  299.         av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);

  300. 

  301.     sps->max_num_ref_frames =

  302.         (avctx->profile & FF_PROFILE_H264_INTRA) ? 0 :

  303.         1 + (ctx->b_per_p > 0);

  304. 

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

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

  307. 

  308.     sps->frame_mbs_only_flag = 1;

  309.     sps->direct_8x8_inference_flag = 1;

  310. 

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

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

  313.         sps->frame_cropping_flag = 1;

  314. 

  315.         sps->frame_crop_left_offset   = 0;

  316.         sps->frame_crop_right_offset  =

  317.             (16 * priv->mb_width - avctx->width) / 2;

  318.         sps->frame_crop_top_offset    = 0;

  319.         sps->frame_crop_bottom_offset =

  320.             (16 * priv->mb_height - avctx->height) / 2;

  321.     } else {

  322.         sps->frame_cropping_flag = 0;

  323.     }

  324. 

  325.     sps->vui_parameters_present_flag = 1;

  326. 

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

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

  329.         static const AVRational sar_idc[] = {

  330.             {   0,  0 },

  331.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  332.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  333.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  334.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  335.         };

  336.         int i;

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

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

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

  340.                 sps->vui.aspect_ratio_idc = i;

  341.                 break;

  342.             }

  343.         }

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

  345.             sps->vui.aspect_ratio_idc = 255;

  346.             sps->vui.sar_width  = avctx->sample_aspect_ratio.num;

  347.             sps->vui.sar_height = avctx->sample_aspect_ratio.den;

  348.         }

  349.         sps->vui.aspect_ratio_info_present_flag = 1;

  350.     }

  351. 

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

  353.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  354.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  355.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  356.         sps->vui.video_signal_type_present_flag = 1;

  357.         sps->vui.video_format      = 5; // Unspecified.

  358.         sps->vui.video_full_range_flag =

  359.             avctx->color_range == AVCOL_RANGE_JPEG;

  360. 

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

  362.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  363.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  364.             sps->vui.colour_description_present_flag = 1;

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

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

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

  368.         }

  369.     } else {

  370.         sps->vui.video_format             = 5;

  371.         sps->vui.video_full_range_flag    = 0;

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

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

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

  375.     }

  376. 

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

  378.         sps->vui.chroma_loc_info_present_flag = 1;

  379.         sps->vui.chroma_sample_loc_type_top_field    =

  380.         sps->vui.chroma_sample_loc_type_bottom_field =

  381.             avctx->chroma_sample_location - 1;

  382.     }

  383. 

  384.     sps->vui.timing_info_present_flag = 1;

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

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

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

  388.         sps->vui.fixed_frame_rate_flag = 1;

  389.     } else {

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

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

  392.         sps->vui.fixed_frame_rate_flag = 0;

  393.     }

  394. 

  395.     if (opt->sei & SEI_TIMING) {

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

  397. 

  398.         sps->vui.nal_hrd_parameters_present_flag = 1;

  399. 

  400.         hrd->cpb_cnt_minus1 = 0;

  401. 

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

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

  404.         hrd->bit_rate_scale =

  405.             av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);

  406.         hrd->bit_rate_value_minus1[0] =

  407.             (avctx->bit_rate >> hrd->bit_rate_scale + 6) - 1;

  408. 

  409.         hrd->cpb_size_scale =

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

  411.         hrd->cpb_size_value_minus1[0] =

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

  413. 

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

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

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

  417. 

  418.         hrd->initial_cpb_removal_delay_length_minus1 = 23;

  419.         hrd->cpb_removal_delay_length_minus1         = 23;

  420.         hrd->dpb_output_delay_length_minus1          = 7;

  421.         hrd->time_offset_length                      = 0;

  422. 

  423.         priv->buffering_period.seq_parameter_set_id = sps->seq_parameter_set_id;

  424. 

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

  426.         priv->buffering_period.nal.initial_cpb_removal_delay[0] = 90000 *

  427.             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /

  428.             ctx->hrd_params.hrd.buffer_size;

  429.         priv->buffering_period.nal.initial_cpb_removal_delay_offset[0] = 0;

  430.     } else {

  431.         sps->vui.nal_hrd_parameters_present_flag = 0;

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

  433.     }

  434. 

  435.     sps->vui.bitstream_restriction_flag    = 1;

  436.     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;

  437.     sps->vui.log2_max_mv_length_horizontal = 16;

  438.     sps->vui.log2_max_mv_length_vertical   = 16;

  439.     sps->vui.max_num_reorder_frames        = (ctx->b_per_p > 0);

  440.     sps->vui.max_dec_frame_buffering       = vseq->max_num_ref_frames;

  441. 

  442.     pps->nal_unit_header.nal_ref_idc = 3;

  443.     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;

  444. 

  445.     pps->pic_parameter_set_id = 0;

  446.     pps->seq_parameter_set_id = 0;

  447. 

  448.     pps->entropy_coding_mode_flag =

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

  450.           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  451.           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);

  452. 

  453.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  454.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  455. 

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

  457. 

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

  459.         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  460.         sps->profile_idc == FF_PROFILE_H264_MAIN) {

  461.         pps->more_rbsp_data = 0;

  462.     } else {

  463.         pps->more_rbsp_data = 1;

  464. 

  465.         pps->transform_8x8_mode_flag = 1;

  466.     }

  467. 

  468.     *vseq = (VAEncSequenceParameterBufferH264) {

  469.         .seq_parameter_set_id = sps->seq_parameter_set_id,

  470.         .level_idc        = sps->level_idc,

  471.         .intra_period     = avctx->gop_size,

  472.         .intra_idr_period = avctx->gop_size,

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

  474. 

  475.         .bits_per_second       = avctx->bit_rate,

  476.         .max_num_ref_frames    = sps->max_num_ref_frames,

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

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

  479. 

  480.         .seq_fields.bits = {

  481.             .chroma_format_idc                 = sps->chroma_format_idc,

  482.             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,

  483.             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,

  484.             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,

  485.             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,

  486.             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,

  487.             .pic_order_cnt_type                = sps->pic_order_cnt_type,

  488.             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,

  489.             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,

  490.         },

  491. 

  492.         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,

  493.         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,

  494. 

  495.         .frame_cropping_flag      = sps->frame_cropping_flag,

  496.         .frame_crop_left_offset   = sps->frame_crop_left_offset,

  497.         .frame_crop_right_offset  = sps->frame_crop_right_offset,

  498.         .frame_crop_top_offset    = sps->frame_crop_top_offset,

  499.         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,

  500. 

  501.         .vui_parameters_present_flag = sps->vui_parameters_present_flag,

  502. 

  503.         .vui_fields.bits = {

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

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

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

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

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

  509.         },

  510. 

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

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

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

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

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

  516.     };

  517. 

  518.     *vpic = (VAEncPictureParameterBufferH264) {

  519.         .CurrPic = {

  520.             .picture_id = VA_INVALID_ID,

  521.             .flags      = VA_PICTURE_H264_INVALID,

  522.         },

  523. 

  524.         .coded_buf = VA_INVALID_ID,

  525. 

  526.         .pic_parameter_set_id = pps->pic_parameter_set_id,

  527.         .seq_parameter_set_id = pps->seq_parameter_set_id,

  528. 

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

  530.         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,

  531.         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,

  532. 

  533.         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,

  534.         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,

  535. 

  536.         .pic_fields.bits = {

  537.             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,

  538.             .weighted_pred_flag              = pps->weighted_pred_flag,

  539.             .weighted_bipred_idc             = pps->weighted_bipred_idc,

  540.             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,

  541.             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,

  542.             .deblocking_filter_control_present_flag =

  543.                 pps->deblocking_filter_control_present_flag,

  544.             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,

  545.             .pic_order_present_flag          =

  546.                 pps->bottom_field_pic_order_in_frame_present_flag,

  547.             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,

  548.         },

  549.     };

  550. 

  551.     return 0;

  552. }

  553. 

  554. static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,

  555.                                                  VAAPIEncodePicture *pic)

  556. {

  557.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  558.     VAAPIEncodeH264Context          *priv = ctx->priv_data;

  559.     VAAPIEncodeH264Options           *opt = ctx->codec_options;

  560.     H264RawSPS                       *sps = &priv->sps;

  561.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  562.     int i;

  563. 

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

  565.            sizeof(priv->current_access_unit));

  566. 

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

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

  569.         priv->frame_num      = 0;

  570.         priv->next_frame_num = 1;

  571.         priv->cpb_delay      = 0;

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

  573.         ++priv->idr_pic_count;

  574. 

  575.         priv->slice_type       = 7;

  576.         priv->primary_pic_type = 0;

  577.     } else {

  578.         priv->frame_num      = priv->next_frame_num;

  579. 

  580.         if (pic->type != PICTURE_TYPE_B) {

  581.             // Reference picture, so frame_num advances.

  582.             priv->next_frame_num = (priv->frame_num + 1) &

  583.                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

  584.         }

  585.         ++priv->cpb_delay;

  586. 

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

  588.             priv->slice_type       = 7;

  589.             priv->primary_pic_type = 0;

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

  591.             priv->slice_type       = 5;

  592.             priv->primary_pic_type = 1;

  593.         } else {

  594.             priv->slice_type       = 6;

  595.             priv->primary_pic_type = 2;

  596.         }

  597.     }

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

  599.     priv->dpb_delay     = pic->display_order - pic->encode_order + 1;

  600. 

  601.     if (opt->aud) {

  602.         priv->aud_needed = 1;

  603.         priv->aud.nal_unit_header.nal_unit_type = H264_NAL_AUD;

  604.         priv->aud.primary_pic_type = priv->primary_pic_type;

  605.     } else {

  606.         priv->aud_needed = 0;

  607.     }

  608. 

  609.     if (opt->sei & SEI_IDENTIFIER && pic->encode_order == 0)

  610.         priv->sei_needed = 1;

  611. 

  612.     if (opt->sei & SEI_TIMING) {

  613.         memset(&priv->pic_timing, 0, sizeof(priv->pic_timing));

  614. 

  615.         priv->pic_timing.cpb_removal_delay = 2 * priv->cpb_delay;

  616.         priv->pic_timing.dpb_output_delay  = 2 * priv->dpb_delay;

  617. 

  618.         priv->sei_needed = 1;

  619.     }

  620. 

  621.     if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {

  622.         priv->recovery_point.recovery_frame_cnt = 0;

  623.         priv->recovery_point.exact_match_flag   = 1;

  624.         priv->recovery_point.broken_link_flag   = ctx->b_per_p > 0;

  625. 

  626.         priv->sei_needed = 1;

  627.     }

  628. 

  629.     vpic->CurrPic = (VAPictureH264) {

  630.         .picture_id          = pic->recon_surface,

  631.         .frame_idx           = priv->frame_num,

  632.         .flags               = 0,

  633.         .TopFieldOrderCnt    = priv->pic_order_cnt,

  634.         .BottomFieldOrderCnt = priv->pic_order_cnt,

  635.     };

  636. 

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

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

  639.         unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &

  640.             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

  641.         unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;

  642. 

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

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

  645.             .picture_id          = ref->recon_surface,

  646.             .frame_idx           = frame_num,

  647.             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,

  648.             .TopFieldOrderCnt    = pic_order_cnt,

  649.             .BottomFieldOrderCnt = pic_order_cnt,

  650.         };

  651.     }

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

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

  654.             .picture_id = VA_INVALID_ID,

  655.             .flags      = VA_PICTURE_H264_INVALID,

  656.         };

  657.     }

  658. 

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

  660. 

  661.     vpic->frame_num = priv->frame_num;

  662. 

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

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

  665. 

  666.     pic->nb_slices = 1;

  667. 

  668.     return 0;

  669. }

  670. 

  671. static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,

  672.                                                VAAPIEncodePicture *pic,

  673.                                                VAAPIEncodeSlice *slice)

  674. {

  675.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  676.     VAAPIEncodeH264Context          *priv = ctx->priv_data;

  677.     H264RawSPS                       *sps = &priv->sps;

  678.     H264RawPPS                       *pps = &priv->pps;

  679.     H264RawSliceHeader                *sh = &priv->slice.header;

  680.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  681.     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;

  682.     int i;

  683. 

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

  685.         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;

  686.         sh->nal_unit_header.nal_ref_idc   = 3;

  687.     } else {

  688.         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;

  689.         sh->nal_unit_header.nal_ref_idc   = pic->type != PICTURE_TYPE_B;

  690.     }

  691. 

  692.     // Only one slice per frame.

  693.     sh->first_mb_in_slice = 0;

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

  695. 

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

  697. 

  698.     sh->frame_num  = priv->frame_num;

  699.     sh->idr_pic_id = priv->idr_pic_count;

  700. 

  701.     sh->pic_order_cnt_lsb = priv->pic_order_cnt &

  702.         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);

  703. 

  704.     sh->direct_spatial_mv_pred_flag = 1;

  705. 

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

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

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

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

  710.     else

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

  712. 

  713. 

  714.     vslice->macroblock_address = sh->first_mb_in_slice;

  715.     vslice->num_macroblocks    = priv->mb_width * priv->mb_height;

  716. 

  717.     vslice->macroblock_info = VA_INVALID_ID;

  718. 

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

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

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

  722. 

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

  724. 

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

  726. 

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

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

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

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

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

  732.     }

  733. 

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

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

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

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

  738.                    pic->type == PICTURE_TYPE_B);

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

  740.     }

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

  742.         // Forward reference for B-frame.

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

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

  745.     }

  746. 

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

  748. 

  749.     return 0;

  750. }

  751. 

  752. static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)

  753. {

  754.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  755.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  756.     VAAPIEncodeH264Options  *opt = ctx->codec_options;

  757.     int err;

  758. 

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

  760.     if (err < 0)

  761.         return err;

  762. 

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

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

  765. 

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

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

  768.         if (avctx->i_quant_factor > 0.0)

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

  770.                                         avctx->i_quant_offset) + 0.5);

  771.         else

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

  773.         if (avctx->b_quant_factor > 0.0)

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

  775.                                       avctx->b_quant_offset) + 0.5);

  776.         else

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

  778. 

  779.         opt->sei &= ~SEI_TIMING;

  780. 

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

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

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

  784. 

  785.     } else if (ctx->va_rc_mode == VA_RC_CBR ||

  786.                ctx->va_rc_mode == VA_RC_VBR) {

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

  788.         priv->fixed_qp_idr = 26;

  789.         priv->fixed_qp_p   = 26;

  790.         priv->fixed_qp_b   = 26;

  791. 

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

  793.                ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",

  794.                avctx->bit_rate);

  795. 

  796.     } else {

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

  798.     }

  799. 

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

  801.         avctx->compression_level = opt->quality;

  802. 

  803.     if (opt->sei & SEI_IDENTIFIER) {

  804.         const char *lavc  = LIBAVCODEC_IDENT;

  805.         const char *vaapi = VA_VERSION_S;

  806.         const char *driver;

  807.         int len;

  808. 

  809.         memcpy(priv->identifier.uuid_iso_iec_11578,

  810.                vaapi_encode_h264_sei_identifier_uuid,

  811.                sizeof(priv->identifier.uuid_iso_iec_11578));

  812. 

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

  814.         if (!driver)

  815.             driver = "unknown driver";

  816. 

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

  818.         if (len >= 0) {

  819.             priv->identifier_string = av_malloc(len + 1);

  820.             if (!priv->identifier_string)

  821.                 return AVERROR(ENOMEM);

  822. 

  823.             snprintf(priv->identifier_string, len + 1,

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

  825. 

  826.             priv->identifier.data = priv->identifier_string;

  827.             priv->identifier.data_length = len + 1;

  828.         }

  829.     }

  830. 

  831.     return 0;

  832. }

  833. 

  834. static const VAAPIEncodeType vaapi_encode_type_h264 = {

  835.     .priv_data_size        = sizeof(VAAPIEncodeH264Context),

  836. 

  837.     .configure             = &vaapi_encode_h264_configure,

  838. 

  839.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),

  840.     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,

  841. 

  842.     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),

  843.     .init_picture_params   = &vaapi_encode_h264_init_picture_params,

  844. 

  845.     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),

  846.     .init_slice_params     = &vaapi_encode_h264_init_slice_params,

  847. 

  848.     .sequence_header_type  = VAEncPackedHeaderSequence,

  849.     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,

  850. 

  851.     .slice_header_type     = VAEncPackedHeaderH264_Slice,

  852.     .write_slice_header    = &vaapi_encode_h264_write_slice_header,

  853. 

  854.     .write_extra_header    = &vaapi_encode_h264_write_extra_header,

  855. };

  856. 

  857. static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)

  858. {

  859.     VAAPIEncodeContext     *ctx = avctx->priv_data;

  860.     VAAPIEncodeH264Options *opt =

  861.         (VAAPIEncodeH264Options*)ctx->codec_options_data;

  862. 

  863.     ctx->codec = &vaapi_encode_type_h264;

  864. 

  865.     switch (avctx->profile) {

  866.     case FF_PROFILE_H264_CONSTRAINED_BASELINE:

  867.         ctx->va_profile = VAProfileH264ConstrainedBaseline;

  868.         break;

  869.     case FF_PROFILE_H264_BASELINE:

  870.         ctx->va_profile = VAProfileH264Baseline;

  871.         break;

  872.     case FF_PROFILE_H264_MAIN:

  873.         ctx->va_profile = VAProfileH264Main;

  874.         break;

  875.     case FF_PROFILE_H264_EXTENDED:

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

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

  878.         return AVERROR_PATCHWELCOME;

  879.     case FF_PROFILE_UNKNOWN:

  880.     case FF_PROFILE_H264_HIGH:

  881.         ctx->va_profile = VAProfileH264High;

  882.         break;

  883.     case FF_PROFILE_H264_HIGH_10:

  884.     case FF_PROFILE_H264_HIGH_10_INTRA:

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

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

  887.         return AVERROR_PATCHWELCOME;

  888.     case FF_PROFILE_H264_HIGH_422:

  889.     case FF_PROFILE_H264_HIGH_422_INTRA:

  890.     case FF_PROFILE_H264_HIGH_444:

  891.     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:

  892.     case FF_PROFILE_H264_HIGH_444_INTRA:

  893.     case FF_PROFILE_H264_CAVLC_444:

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

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

  896.         return AVERROR_PATCHWELCOME;

  897.     default:

  898.         av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",

  899.                avctx->profile);

  900.         return AVERROR(EINVAL);

  901.     }

  902.     if (opt->low_power) {

  903. #if VA_CHECK_VERSION(0, 39, 2)

  904.         ctx->va_entrypoint = VAEntrypointEncSliceLP;

  905. #else

  906.         av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "

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

  908.         return AVERROR(EINVAL);

  909. #endif

  910.     } else {

  911.         ctx->va_entrypoint = VAEntrypointEncSlice;

  912.     }

  913. 

  914.     // Only 8-bit encode is supported.

  915.     ctx->va_rt_format = VA_RT_FORMAT_YUV420;

  916. 

  917.     if (avctx->bit_rate > 0) {

  918.         if (avctx->rc_max_rate == avctx->bit_rate)

  919.             ctx->va_rc_mode = VA_RC_CBR;

  920.         else

  921.             ctx->va_rc_mode = VA_RC_VBR;

  922.     } else

  923.         ctx->va_rc_mode = VA_RC_CQP;

  924. 

  925.     ctx->va_packed_headers =

  926.         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.

  927.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  928.         VA_ENC_PACKED_HEADER_MISC;      // SEI.

  929. 

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

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

  932. 

  933.     return ff_vaapi_encode_init(avctx);

  934. }

  935. 

  936. static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)

  937. {

  938.     VAAPIEncodeContext *ctx = avctx->priv_data;

  939.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  940. 

  941.     if (priv) {

  942.         ff_cbs_close(&priv->cbc);

  943.         av_freep(&priv->identifier_string);

  944.     }

  945. 

  946.     return ff_vaapi_encode_close(avctx);

  947. }

  948. 

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

  950.                    offsetof(VAAPIEncodeH264Options, x))

  951. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  952. static const AVOption vaapi_encode_h264_options[] = {

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

  954.       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },

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

  956.       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },

  957.     { "low_power", "Use low-power encoding mode (experimental: only supported "

  958.       "on some platforms, does not support all features)",

  959.       OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

  960. 

  961.     { "aud", "Include AUD",

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

  963. 

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

  965.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

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

  967.       0, INT_MAX, FLAGS, "sei" },

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

  969.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },

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

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

  972.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },

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

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

  975.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },

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

  977.     { NULL },

  978. };

  979. 

  980. static const AVCodecDefault vaapi_encode_h264_defaults[] = {

  981.     { "profile",        "100" },

  982.     { "level",          "51"  },

  983.     { "b",              "0"   },

  984.     { "bf",             "2"   },

  985.     { "g",              "120" },

  986.     { "i_qfactor",      "1.0" },

  987.     { "i_qoffset",      "0.0" },

  988.     { "b_qfactor",      "1.2" },

  989.     { "b_qoffset",      "0.0" },

  990.     { "qmin",           "0"   },

  991.     { NULL },

  992. };

  993. 

  994. static const AVClass vaapi_encode_h264_class = {

  995.     .class_name = "h264_vaapi",

  996.     .item_name  = av_default_item_name,

  997.     .option     = vaapi_encode_h264_options,

  998.     .version    = LIBAVUTIL_VERSION_INT,

  999. };

  1000. 

  1001. AVCodec ff_h264_vaapi_encoder = {

  1002.     .name           = "h264_vaapi",

  1003.     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),

  1004.     .type           = AVMEDIA_TYPE_VIDEO,

  1005.     .id             = AV_CODEC_ID_H264,

  1006.     .priv_data_size = (sizeof(VAAPIEncodeContext) +

  1007.                        sizeof(VAAPIEncodeH264Options)),

  1008.     .init           = &vaapi_encode_h264_init,

  1009.     .encode2        = &ff_vaapi_encode2,

  1010.     .close          = &vaapi_encode_h264_close,

  1011.     .priv_class     = &vaapi_encode_h264_class,

  1012.     .capabilities   = AV_CODEC_CAP_DELAY,

  1013.     .defaults       = vaapi_encode_h264_defaults,

  1014.     .pix_fmts = (const enum AVPixelFormat[]) {

  1015.         AV_PIX_FMT_VAAPI,

  1016.         AV_PIX_FMT_NONE,

  1017.     },

  1018. };