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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_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.     int sei_cbr_workaround_needed;

  86. } VAAPIEncodeH264Context;

  87. 

  88. typedef struct VAAPIEncodeH264Options {

  89.     int qp;

  90.     int quality;

  91.     int low_power;

  92.     // Entropy encoder type.

  93.     int coder;

  94.     int aud;

  95.     int sei;

  96.     int profile;

  97.     int level;

  98. } VAAPIEncodeH264Options;

  99. 

  100. 

  101. static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,

  102.                                                char *data, size_t *data_len,

  103.                                                CodedBitstreamFragment *au)

  104. {

  105.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  106.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  107.     int err;

  108. 

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

  110.     if (err < 0) {

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

  112.         return err;

  113.     }

  114. 

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

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

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

  118.                8 * au->data_size - au->data_bit_padding);

  119.         return AVERROR(ENOSPC);

  120.     }

  121. 

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

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

  124. 

  125.     return 0;

  126. }

  127. 

  128. static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,

  129.                                      CodedBitstreamFragment *au,

  130.                                      void *nal_unit)

  131. {

  132.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  133.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  134.     H264RawNALUnitHeader *header = nal_unit;

  135.     int err;

  136. 

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

  138.                                      header->nal_unit_type, nal_unit);

  139.     if (err < 0) {

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

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

  142.         return err;

  143.     }

  144. 

  145.     return 0;

  146. }

  147. 

  148. static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,

  149.                                                    char *data, size_t *data_len)

  150. {

  151.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  152.     VAAPIEncodeH264Context *priv = ctx->priv_data;

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

  154.     int err;

  155. 

  156.     if (priv->aud_needed) {

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

  158.         if (err < 0)

  159.             goto fail;

  160.         priv->aud_needed = 0;

  161.     }

  162. 

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

  164.     if (err < 0)

  165.         goto fail;

  166. 

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

  168.     if (err < 0)

  169.         goto fail;

  170. 

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

  172. fail:

  173.     ff_cbs_fragment_uninit(priv->cbc, au);

  174.     return err;

  175. }

  176. 

  177. static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,

  178.                                                 VAAPIEncodePicture *pic,

  179.                                                 VAAPIEncodeSlice *slice,

  180.                                                 char *data, size_t *data_len)

  181. {

  182.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  183.     VAAPIEncodeH264Context *priv = ctx->priv_data;

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

  185.     int err;

  186. 

  187.     if (priv->aud_needed) {

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

  189.         if (err < 0)

  190.             goto fail;

  191.         priv->aud_needed = 0;

  192.     }

  193. 

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

  195.     if (err < 0)

  196.         goto fail;

  197. 

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

  199. fail:

  200.     ff_cbs_fragment_uninit(priv->cbc, au);

  201.     return err;

  202. }

  203. 

  204. static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,

  205.                                                 VAAPIEncodePicture *pic,

  206.                                                 int index, int *type,

  207.                                                 char *data, size_t *data_len)

  208. {

  209.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  210.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  211.     VAAPIEncodeH264Options  *opt = ctx->codec_options;

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

  213.     int err, i;

  214. 

  215.     if (priv->sei_needed) {

  216.         if (priv->aud_needed) {

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

  218.             if (err < 0)

  219.                 goto fail;

  220.             priv->aud_needed = 0;

  221.         }

  222. 

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

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

  225. 

  226.         i = 0;

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

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

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

  230.             ++i;

  231.         }

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

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

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

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

  236.                 ++i;

  237.             }

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

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

  240.             ++i;

  241.         }

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

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

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

  245.             ++i;

  246.         }

  247. 

  248.         priv->sei.payload_count = i;

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

  250. 

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

  252.         if (err < 0)

  253.             goto fail;

  254.         priv->sei_needed = 0;

  255. 

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

  257.         if (err < 0)

  258.             goto fail;

  259. 

  260.         ff_cbs_fragment_uninit(priv->cbc, au);

  261. 

  262.         *type = VAEncPackedHeaderRawData;

  263.         return 0;

  264. 

  265. #if !CONFIG_VAAPI_1

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

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

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

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

  270.         // driver and inserted into the stream.

  271.         *data_len = 0;

  272.         *type = VAEncPackedHeaderH264_SEI;

  273.         priv->sei_cbr_workaround_needed = 0;

  274.         return 0;

  275. #endif

  276. 

  277.     } else {

  278.         return AVERROR_EOF;

  279.     }

  280. 

  281. fail:

  282.     ff_cbs_fragment_uninit(priv->cbc, au);

  283.     return err;

  284. }

  285. 

  286. static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)

  287. {

  288.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  289.     VAAPIEncodeH264Context           *priv = ctx->priv_data;

  290.     VAAPIEncodeH264Options            *opt = ctx->codec_options;

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

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

  293.     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;

  294.     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;

  295. 

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

  297.            sizeof(priv->current_access_unit));

  298. 

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

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

  301. 

  302.     sps->nal_unit_header.nal_ref_idc   = 3;

  303.     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;

  304. 

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

  306.     sps->constraint_set1_flag =

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

  308.     sps->constraint_set3_flag =

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

  310. 

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

  312. 

  313.     sps->seq_parameter_set_id = 0;

  314.     sps->chroma_format_idc    = 1;

  315. 

  316.     sps->log2_max_frame_num_minus4 = 4;

  317.     sps->pic_order_cnt_type        = 0;

  318.     sps->log2_max_pic_order_cnt_lsb_minus4 =

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

  320. 

  321.     sps->max_num_ref_frames =

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

  323.         1 + (ctx->b_per_p > 0);

  324. 

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

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

  327. 

  328.     sps->frame_mbs_only_flag = 1;

  329.     sps->direct_8x8_inference_flag = 1;

  330. 

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

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

  333.         sps->frame_cropping_flag = 1;

  334. 

  335.         sps->frame_crop_left_offset   = 0;

  336.         sps->frame_crop_right_offset  =

  337.             (16 * priv->mb_width - avctx->width) / 2;

  338.         sps->frame_crop_top_offset    = 0;

  339.         sps->frame_crop_bottom_offset =

  340.             (16 * priv->mb_height - avctx->height) / 2;

  341.     } else {

  342.         sps->frame_cropping_flag = 0;

  343.     }

  344. 

  345.     sps->vui_parameters_present_flag = 1;

  346. 

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

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

  349.         static const AVRational sar_idc[] = {

  350.             {   0,  0 },

  351.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  352.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  353.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  354.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  355.         };

  356.         int i;

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

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

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

  360.                 sps->vui.aspect_ratio_idc = i;

  361.                 break;

  362.             }

  363.         }

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

  365.             sps->vui.aspect_ratio_idc = 255;

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

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

  368.         }

  369.         sps->vui.aspect_ratio_info_present_flag = 1;

  370.     }

  371. 

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

  373.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  374.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  375.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  376.         sps->vui.video_signal_type_present_flag = 1;

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

  378.         sps->vui.video_full_range_flag =

  379.             avctx->color_range == AVCOL_RANGE_JPEG;

  380. 

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

  382.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  383.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  384.             sps->vui.colour_description_present_flag = 1;

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

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

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

  388.         }

  389.     } else {

  390.         sps->vui.video_format             = 5;

  391.         sps->vui.video_full_range_flag    = 0;

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

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

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

  395.     }

  396. 

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

  398.         sps->vui.chroma_loc_info_present_flag = 1;

  399.         sps->vui.chroma_sample_loc_type_top_field    =

  400.         sps->vui.chroma_sample_loc_type_bottom_field =

  401.             avctx->chroma_sample_location - 1;

  402.     }

  403. 

  404.     sps->vui.timing_info_present_flag = 1;

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

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

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

  408.         sps->vui.fixed_frame_rate_flag = 1;

  409.     } else {

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

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

  412.         sps->vui.fixed_frame_rate_flag = 0;

  413.     }

  414. 

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

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

  417. 

  418.         sps->vui.nal_hrd_parameters_present_flag = 1;

  419. 

  420.         hrd->cpb_cnt_minus1 = 0;

  421. 

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

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

  424.         hrd->bit_rate_scale =

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

  426.         hrd->bit_rate_value_minus1[0] =

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

  428. 

  429.         hrd->cpb_size_scale =

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

  431.         hrd->cpb_size_value_minus1[0] =

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

  433. 

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

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

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

  437. 

  438.         hrd->initial_cpb_removal_delay_length_minus1 = 23;

  439.         hrd->cpb_removal_delay_length_minus1         = 23;

  440.         hrd->dpb_output_delay_length_minus1          = 7;

  441.         hrd->time_offset_length                      = 0;

  442. 

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

  444. 

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

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

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

  448.             ctx->hrd_params.hrd.buffer_size;

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

  450.     } else {

  451.         sps->vui.nal_hrd_parameters_present_flag = 0;

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

  453.     }

  454. 

  455.     sps->vui.bitstream_restriction_flag    = 1;

  456.     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;

  457.     sps->vui.log2_max_mv_length_horizontal = 16;

  458.     sps->vui.log2_max_mv_length_vertical   = 16;

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

  460.     sps->vui.max_dec_frame_buffering       = sps->max_num_ref_frames;

  461. 

  462.     pps->nal_unit_header.nal_ref_idc = 3;

  463.     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;

  464. 

  465.     pps->pic_parameter_set_id = 0;

  466.     pps->seq_parameter_set_id = 0;

  467. 

  468.     pps->entropy_coding_mode_flag =

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

  470.           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  471.           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);

  472.     if (!opt->coder && pps->entropy_coding_mode_flag)

  473.         pps->entropy_coding_mode_flag = 0;

  474. 

  475.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  476.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  477. 

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

  479. 

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

  481.         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  482.         sps->profile_idc == FF_PROFILE_H264_MAIN) {

  483.         pps->more_rbsp_data = 0;

  484.     } else {

  485.         pps->more_rbsp_data = 1;

  486. 

  487.         pps->transform_8x8_mode_flag = 1;

  488.     }

  489. 

  490.     *vseq = (VAEncSequenceParameterBufferH264) {

  491.         .seq_parameter_set_id = sps->seq_parameter_set_id,

  492.         .level_idc        = sps->level_idc,

  493.         .intra_period     = avctx->gop_size,

  494.         .intra_idr_period = avctx->gop_size,

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

  496. 

  497.         .bits_per_second       = avctx->bit_rate,

  498.         .max_num_ref_frames    = sps->max_num_ref_frames,

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

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

  501. 

  502.         .seq_fields.bits = {

  503.             .chroma_format_idc                 = sps->chroma_format_idc,

  504.             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,

  505.             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,

  506.             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,

  507.             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,

  508.             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,

  509.             .pic_order_cnt_type                = sps->pic_order_cnt_type,

  510.             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,

  511.             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,

  512.         },

  513. 

  514.         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,

  515.         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,

  516. 

  517.         .frame_cropping_flag      = sps->frame_cropping_flag,

  518.         .frame_crop_left_offset   = sps->frame_crop_left_offset,

  519.         .frame_crop_right_offset  = sps->frame_crop_right_offset,

  520.         .frame_crop_top_offset    = sps->frame_crop_top_offset,

  521.         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,

  522. 

  523.         .vui_parameters_present_flag = sps->vui_parameters_present_flag,

  524. 

  525.         .vui_fields.bits = {

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

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

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

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

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

  531.         },

  532. 

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

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

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

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

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

  538.     };

  539. 

  540.     *vpic = (VAEncPictureParameterBufferH264) {

  541.         .CurrPic = {

  542.             .picture_id = VA_INVALID_ID,

  543.             .flags      = VA_PICTURE_H264_INVALID,

  544.         },

  545. 

  546.         .coded_buf = VA_INVALID_ID,

  547. 

  548.         .pic_parameter_set_id = pps->pic_parameter_set_id,

  549.         .seq_parameter_set_id = pps->seq_parameter_set_id,

  550. 

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

  552.         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,

  553.         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,

  554. 

  555.         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,

  556.         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,

  557. 

  558.         .pic_fields.bits = {

  559.             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,

  560.             .weighted_pred_flag              = pps->weighted_pred_flag,

  561.             .weighted_bipred_idc             = pps->weighted_bipred_idc,

  562.             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,

  563.             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,

  564.             .deblocking_filter_control_present_flag =

  565.                 pps->deblocking_filter_control_present_flag,

  566.             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,

  567.             .pic_order_present_flag          =

  568.                 pps->bottom_field_pic_order_in_frame_present_flag,

  569.             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,

  570.         },

  571.     };

  572. 

  573.     return 0;

  574. }

  575. 

  576. static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,

  577.                                                  VAAPIEncodePicture *pic)

  578. {

  579.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  580.     VAAPIEncodeH264Context          *priv = ctx->priv_data;

  581.     VAAPIEncodeH264Options           *opt = ctx->codec_options;

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

  583.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  584.     int i;

  585. 

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

  587.            sizeof(priv->current_access_unit));

  588. 

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

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

  591.         priv->frame_num      = 0;

  592.         priv->next_frame_num = 1;

  593.         priv->cpb_delay      = 0;

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

  595.         ++priv->idr_pic_count;

  596. 

  597.         priv->slice_type       = 7;

  598.         priv->primary_pic_type = 0;

  599.     } else {

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

  601. 

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

  603.             // Reference picture, so frame_num advances.

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

  605.                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

  606.         }

  607.         ++priv->cpb_delay;

  608. 

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

  610.             priv->slice_type       = 7;

  611.             priv->primary_pic_type = 0;

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

  613.             priv->slice_type       = 5;

  614.             priv->primary_pic_type = 1;

  615.         } else {

  616.             priv->slice_type       = 6;

  617.             priv->primary_pic_type = 2;

  618.         }

  619.     }

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

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

  622. 

  623.     if (opt->aud) {

  624.         priv->aud_needed = 1;

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

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

  627.     } else {

  628.         priv->aud_needed = 0;

  629.     }

  630. 

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

  632.         priv->sei_needed = 1;

  633. #if !CONFIG_VAAPI_1

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

  635.         priv->sei_cbr_workaround_needed = 1;

  636. #endif

  637. 

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

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

  640. 

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

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

  643. 

  644.         priv->sei_needed = 1;

  645.     }

  646. 

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

  648.         priv->recovery_point.recovery_frame_cnt = 0;

  649.         priv->recovery_point.exact_match_flag   = 1;

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

  651. 

  652.         priv->sei_needed = 1;

  653.     }

  654. 

  655.     vpic->CurrPic = (VAPictureH264) {

  656.         .picture_id          = pic->recon_surface,

  657.         .frame_idx           = priv->frame_num,

  658.         .flags               = 0,

  659.         .TopFieldOrderCnt    = priv->pic_order_cnt,

  660.         .BottomFieldOrderCnt = priv->pic_order_cnt,

  661.     };

  662. 

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

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

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

  666.             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

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

  668. 

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

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

  671.             .picture_id          = ref->recon_surface,

  672.             .frame_idx           = frame_num,

  673.             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,

  674.             .TopFieldOrderCnt    = pic_order_cnt,

  675.             .BottomFieldOrderCnt = pic_order_cnt,

  676.         };

  677.     }

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

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

  680.             .picture_id = VA_INVALID_ID,

  681.             .flags      = VA_PICTURE_H264_INVALID,

  682.         };

  683.     }

  684. 

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

  686. 

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

  688. 

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

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

  691. 

  692.     pic->nb_slices = 1;

  693. 

  694.     return 0;

  695. }

  696. 

  697. static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,

  698.                                                VAAPIEncodePicture *pic,

  699.                                                VAAPIEncodeSlice *slice)

  700. {

  701.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  702.     VAAPIEncodeH264Context          *priv = ctx->priv_data;

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

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

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

  706.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  707.     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;

  708.     int i;

  709. 

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

  711.         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;

  712.         sh->nal_unit_header.nal_ref_idc   = 3;

  713.     } else {

  714.         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;

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

  716.     }

  717. 

  718.     // Only one slice per frame.

  719.     sh->first_mb_in_slice = 0;

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

  721. 

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

  723. 

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

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

  726. 

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

  728.         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);

  729. 

  730.     sh->direct_spatial_mv_pred_flag = 1;

  731. 

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

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

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

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

  736.     else

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

  738. 

  739. 

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

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

  742. 

  743.     vslice->macroblock_info = VA_INVALID_ID;

  744. 

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

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

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

  748. 

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

  750. 

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

  752. 

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

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

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

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

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

  758.     }

  759. 

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

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

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

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

  764.                    pic->type == PICTURE_TYPE_B);

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

  766.     }

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

  768.         // Forward reference for B-frame.

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

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

  771.     }

  772. 

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

  774. 

  775.     return 0;

  776. }

  777. 

  778. static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)

  779. {

  780.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  781.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  782.     VAAPIEncodeH264Options  *opt = ctx->codec_options;

  783.     int err;

  784. 

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

  786.     if (err < 0)

  787.         return err;

  788. 

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

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

  791. 

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

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

  794.         if (avctx->i_quant_factor > 0.0)

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

  796.                                         avctx->i_quant_offset) + 0.5);

  797.         else

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

  799.         if (avctx->b_quant_factor > 0.0)

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

  801.                                       avctx->b_quant_offset) + 0.5);

  802.         else

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

  804. 

  805.         opt->sei &= ~SEI_TIMING;

  806. 

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

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

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

  810. 

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

  812.                ctx->va_rc_mode == VA_RC_VBR) {

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

  814.         priv->fixed_qp_idr = 26;

  815.         priv->fixed_qp_p   = 26;

  816.         priv->fixed_qp_b   = 26;

  817. 

  818.         av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %"PRId64" bps.\n",

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

  820.                avctx->bit_rate);

  821. 

  822.     } else {

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

  824.     }

  825. 

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

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

  828. 

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

  830.         const char *lavc  = LIBAVCODEC_IDENT;

  831.         const char *vaapi = VA_VERSION_S;

  832.         const char *driver;

  833.         int len;

  834. 

  835.         memcpy(priv->identifier.uuid_iso_iec_11578,

  836.                vaapi_encode_h264_sei_identifier_uuid,

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

  838. 

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

  840.         if (!driver)

  841.             driver = "unknown driver";

  842. 

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

  844.         if (len >= 0) {

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

  846.             if (!priv->identifier_string)

  847.                 return AVERROR(ENOMEM);

  848. 

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

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

  851. 

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

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

  854.         }

  855.     }

  856. 

  857.     return 0;

  858. }

  859. 

  860. static const VAAPIEncodeType vaapi_encode_type_h264 = {

  861.     .priv_data_size        = sizeof(VAAPIEncodeH264Context),

  862. 

  863.     .configure             = &vaapi_encode_h264_configure,

  864. 

  865.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),

  866.     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,

  867. 

  868.     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),

  869.     .init_picture_params   = &vaapi_encode_h264_init_picture_params,

  870. 

  871.     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),

  872.     .init_slice_params     = &vaapi_encode_h264_init_slice_params,

  873. 

  874.     .sequence_header_type  = VAEncPackedHeaderSequence,

  875.     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,

  876. 

  877.     .slice_header_type     = VAEncPackedHeaderH264_Slice,

  878.     .write_slice_header    = &vaapi_encode_h264_write_slice_header,

  879. 

  880.     .write_extra_header    = &vaapi_encode_h264_write_extra_header,

  881. };

  882. 

  883. static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)

  884. {

  885.     VAAPIEncodeContext     *ctx = avctx->priv_data;

  886.     VAAPIEncodeH264Options *opt =

  887.         (VAAPIEncodeH264Options*)ctx->codec_options_data;

  888. 

  889.     ctx->codec = &vaapi_encode_type_h264;

  890. 

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

  892.         avctx->profile = opt->profile;

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

  894.         avctx->level = opt->level;

  895. 

  896.     switch (avctx->profile) {

  897.     case FF_PROFILE_H264_BASELINE:

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

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

  900.         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;

  901.     case FF_PROFILE_H264_CONSTRAINED_BASELINE:

  902.         ctx->va_profile = VAProfileH264ConstrainedBaseline;

  903.         if (avctx->max_b_frames != 0) {

  904.             avctx->max_b_frames = 0;

  905.             av_log(avctx, AV_LOG_WARNING, "H.264 constrained baseline profile "

  906.                    "doesn't support encoding with B frames, disabling them.\n");

  907.         }

  908.         break;

  909.     case FF_PROFILE_H264_MAIN:

  910.         ctx->va_profile = VAProfileH264Main;

  911.         break;

  912.     case FF_PROFILE_H264_EXTENDED:

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

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

  915.         return AVERROR_PATCHWELCOME;

  916.     case FF_PROFILE_UNKNOWN:

  917.     case FF_PROFILE_H264_HIGH:

  918.         ctx->va_profile = VAProfileH264High;

  919.         break;

  920.     case FF_PROFILE_H264_HIGH_10:

  921.     case FF_PROFILE_H264_HIGH_10_INTRA:

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

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

  924.         return AVERROR_PATCHWELCOME;

  925.     case FF_PROFILE_H264_HIGH_422:

  926.     case FF_PROFILE_H264_HIGH_422_INTRA:

  927.     case FF_PROFILE_H264_HIGH_444:

  928.     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:

  929.     case FF_PROFILE_H264_HIGH_444_INTRA:

  930.     case FF_PROFILE_H264_CAVLC_444:

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

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

  933.         return AVERROR_PATCHWELCOME;

  934.     default:

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

  936.                avctx->profile);

  937.         return AVERROR(EINVAL);

  938.     }

  939.     if (opt->low_power) {

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

  941.         ctx->va_entrypoint = VAEntrypointEncSliceLP;

  942. #else

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

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

  945.         return AVERROR(EINVAL);

  946. #endif

  947.     } else {

  948.         ctx->va_entrypoint = VAEntrypointEncSlice;

  949.     }

  950. 

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

  952.     ctx->va_rt_format = VA_RT_FORMAT_YUV420;

  953. 

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

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

  956.             ctx->va_rc_mode = VA_RC_CBR;

  957.         else

  958.             ctx->va_rc_mode = VA_RC_VBR;

  959.     } else

  960.         ctx->va_rc_mode = VA_RC_CQP;

  961. 

  962.     ctx->va_packed_headers =

  963.         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.

  964.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  965.         VA_ENC_PACKED_HEADER_MISC;      // SEI.

  966. 

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

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

  969. 

  970.     return ff_vaapi_encode_init(avctx);

  971. }

  972. 

  973. static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)

  974. {

  975.     VAAPIEncodeContext *ctx = avctx->priv_data;

  976.     VAAPIEncodeH264Context *priv = ctx->priv_data;

  977. 

  978.     if (priv) {

  979.         ff_cbs_close(&priv->cbc);

  980.         av_freep(&priv->identifier_string);

  981.     }

  982. 

  983.     return ff_vaapi_encode_close(avctx);

  984. }

  985. 

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

  987.                    offsetof(VAAPIEncodeH264Options, x))

  988. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  989. static const AVOption vaapi_encode_h264_options[] = {

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

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

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

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

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

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

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

  997.     { "coder", "Entropy coder type",

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

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

  1000.         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1001.         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1002.         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1003. 

  1004.     { "aud", "Include AUD",

  1005.       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

  1006. 

  1007.     { "sei", "Set SEI to include",

  1008.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

  1009.       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },

  1010.       0, INT_MAX, FLAGS, "sei" },

  1011.     { "identifier", "Include encoder version identifier",

  1012.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },

  1013.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1014.     { "timing", "Include timing parameters (buffering_period and pic_timing)",

  1015.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },

  1016.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1017.     { "recovery_point", "Include recovery points where appropriate",

  1018.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },

  1019.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1020. 

  1021.     { "profile", "Set profile (profile_idc and constraint_set*_flag)",

  1022.       OFFSET(profile), AV_OPT_TYPE_INT,

  1023.       { .i64 = FF_PROFILE_H264_HIGH }, 0x0000, 0xffff, FLAGS, "profile" },

  1024. 

  1025. #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \

  1026.       { .i64 = value }, 0, 0, FLAGS, "profile"

  1027.     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },

  1028.     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },

  1029.     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },

  1030. #undef PROFILE

  1031. 

  1032.     { "level", "Set level (level_idc)",

  1033.       OFFSET(level), AV_OPT_TYPE_INT,

  1034.       { .i64 = 51 }, 0x00, 0xff, FLAGS, "level" },

  1035. 

  1036. #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \

  1037.       { .i64 = value }, 0, 0, FLAGS, "level"

  1038.     { LEVEL("1",   10) },

  1039.     { LEVEL("1.1", 11) },

  1040.     { LEVEL("1.2", 12) },

  1041.     { LEVEL("1.3", 13) },

  1042.     { LEVEL("2",   20) },

  1043.     { LEVEL("2.1", 21) },

  1044.     { LEVEL("2.2", 22) },

  1045.     { LEVEL("3",   30) },

  1046.     { LEVEL("3.1", 31) },

  1047.     { LEVEL("3.2", 32) },

  1048.     { LEVEL("4",   40) },

  1049.     { LEVEL("4.1", 41) },

  1050.     { LEVEL("4.2", 42) },

  1051.     { LEVEL("5",   50) },

  1052.     { LEVEL("5.1", 51) },

  1053.     { LEVEL("5.2", 52) },

  1054.     { LEVEL("6",   60) },

  1055.     { LEVEL("6.1", 61) },

  1056.     { LEVEL("6.2", 62) },

  1057. #undef LEVEL

  1058. 

  1059.     { NULL },

  1060. };

  1061. 

  1062. static const AVCodecDefault vaapi_encode_h264_defaults[] = {

  1063.     { "b",              "0"   },

  1064.     { "bf",             "2"   },

  1065.     { "g",              "120" },

  1066.     { "i_qfactor",      "1"   },

  1067.     { "i_qoffset",      "0"   },

  1068.     { "b_qfactor",      "6/5" },

  1069.     { "b_qoffset",      "0"   },

  1070.     { "qmin",           "0"   },

  1071.     { NULL },

  1072. };

  1073. 

  1074. static const AVClass vaapi_encode_h264_class = {

  1075.     .class_name = "h264_vaapi",

  1076.     .item_name  = av_default_item_name,

  1077.     .option     = vaapi_encode_h264_options,

  1078.     .version    = LIBAVUTIL_VERSION_INT,

  1079. };

  1080. 

  1081. AVCodec ff_h264_vaapi_encoder = {

  1082.     .name           = "h264_vaapi",

  1083.     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),

  1084.     .type           = AVMEDIA_TYPE_VIDEO,

  1085.     .id             = AV_CODEC_ID_H264,

  1086.     .priv_data_size = (sizeof(VAAPIEncodeContext) +

  1087.                        sizeof(VAAPIEncodeH264Options)),

  1088.     .init           = &vaapi_encode_h264_init,

  1089.     .encode2        = &ff_vaapi_encode2,

  1090.     .close          = &vaapi_encode_h264_close,

  1091.     .priv_class     = &vaapi_encode_h264_class,

  1092.     .capabilities   = AV_CODEC_CAP_DELAY,

  1093.     .defaults       = vaapi_encode_h264_defaults,

  1094.     .pix_fmts = (const enum AVPixelFormat[]) {

  1095.         AV_PIX_FMT_VAAPI,

  1096.         AV_PIX_FMT_NONE,

  1097.     },

  1098. };