falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91699 Commits
32 Branches
687MB
Tree: 2fd962efba
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '2fd962efba'
${ noResults }
FFmpeg/libavcodec/vaapi_encode_h264.c

1103 lines
39KB
Raw Blame History 

  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.     VAAPIEncodeContext common;

  51. 

  52.     // User options.

  53.     int qp;

  54.     int quality;

  55.     int low_power;

  56.     int coder;

  57.     int aud;

  58.     int sei;

  59.     int profile;

  60.     int level;

  61. 

  62.     // Derived settings.

  63.     int mb_width;

  64.     int mb_height;

  65. 

  66.     int fixed_qp_idr;

  67.     int fixed_qp_p;

  68.     int fixed_qp_b;

  69. 

  70.     // Stream state.

  71.     int frame_num;

  72.     int pic_order_cnt;

  73.     int next_frame_num;

  74.     int64_t last_idr_frame;

  75.     int64_t idr_pic_count;

  76. 

  77.     int primary_pic_type;

  78.     int slice_type;

  79. 

  80.     int cpb_delay;

  81.     int dpb_delay;

  82. 

  83.     // Writer structures.

  84.     CodedBitstreamContext *cbc;

  85.     CodedBitstreamFragment current_access_unit;

  86. 

  87.     H264RawAUD   raw_aud;

  88.     H264RawSPS   raw_sps;

  89.     H264RawPPS   raw_pps;

  90.     H264RawSEI   raw_sei;

  91.     H264RawSlice raw_slice;

  92. 

  93.     H264RawSEIBufferingPeriod      sei_buffering_period;

  94.     H264RawSEIPicTiming            sei_pic_timing;

  95.     H264RawSEIRecoveryPoint        sei_recovery_point;

  96.     H264RawSEIUserDataUnregistered sei_identifier;

  97.     char                          *sei_identifier_string;

  98. 

  99.     int aud_needed;

  100.     int sei_needed;

  101.     int sei_cbr_workaround_needed;

  102. } VAAPIEncodeH264Context;

  103. 

  104. 

  105. static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,

  106.                                                char *data, size_t *data_len,

  107.                                                CodedBitstreamFragment *au)

  108. {

  109.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  110.     int err;

  111. 

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

  113.     if (err < 0) {

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

  115.         return err;

  116.     }

  117. 

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

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

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

  121.                8 * au->data_size - au->data_bit_padding);

  122.         return AVERROR(ENOSPC);

  123.     }

  124. 

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

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

  127. 

  128.     return 0;

  129. }

  130. 

  131. static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,

  132.                                      CodedBitstreamFragment *au,

  133.                                      void *nal_unit)

  134. {

  135.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  136.     H264RawNALUnitHeader *header = nal_unit;

  137.     int err;

  138. 

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

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

  141.     if (err < 0) {

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

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

  144.         return err;

  145.     }

  146. 

  147.     return 0;

  148. }

  149. 

  150. static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,

  151.                                                    char *data, size_t *data_len)

  152. {

  153.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  155.     int err;

  156. 

  157.     if (priv->aud_needed) {

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

  159.         if (err < 0)

  160.             goto fail;

  161.         priv->aud_needed = 0;

  162.     }

  163. 

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

  165.     if (err < 0)

  166.         goto fail;

  167. 

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

  169.     if (err < 0)

  170.         goto fail;

  171. 

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

  173. fail:

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

  175.     return err;

  176. }

  177. 

  178. static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,

  179.                                                 VAAPIEncodePicture *pic,

  180.                                                 VAAPIEncodeSlice *slice,

  181.                                                 char *data, size_t *data_len)

  182. {

  183.     VAAPIEncodeH264Context *priv = avctx->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->raw_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->raw_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.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  211.     int err, i;

  212. 

  213.     if (priv->sei_needed) {

  214.         H264RawSEI *sei = &priv->raw_sei;

  215. 

  216.         if (priv->aud_needed) {

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

  218.             if (err < 0)

  219.                 goto fail;

  220.             priv->aud_needed = 0;

  221.         }

  222. 

  223.         *sei = (H264RawSEI) {

  224.             .nal_unit_header = {

  225.                 .nal_unit_type = H264_NAL_SEI,

  226.             },

  227.         };

  228. 

  229.         i = 0;

  230. 

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

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

  233.             sei->payload[i].payload.user_data_unregistered = priv->sei_identifier;

  234.             ++i;

  235.         }

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

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

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

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

  240.                 ++i;

  241.             }

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

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

  244.             ++i;

  245.         }

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

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

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

  249.             ++i;

  250.         }

  251. 

  252.         sei->payload_count = i;

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

  254. 

  255.         err = vaapi_encode_h264_add_nal(avctx, au, sei);

  256.         if (err < 0)

  257.             goto fail;

  258.         priv->sei_needed = 0;

  259. 

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

  261.         if (err < 0)

  262.             goto fail;

  263. 

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

  265. 

  266.         *type = VAEncPackedHeaderRawData;

  267.         return 0;

  268. 

  269. #if !CONFIG_VAAPI_1

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

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

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

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

  274.         // driver and inserted into the stream.

  275.         *data_len = 0;

  276.         *type = VAEncPackedHeaderH264_SEI;

  277.         priv->sei_cbr_workaround_needed = 0;

  278.         return 0;

  279. #endif

  280. 

  281.     } else {

  282.         return AVERROR_EOF;

  283.     }

  284. 

  285. fail:

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

  287.     return err;

  288. }

  289. 

  290. static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)

  291. {

  292.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  293.     VAAPIEncodeH264Context           *priv = avctx->priv_data;

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

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

  296.     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;

  297.     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;

  298. 

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

  300.            sizeof(priv->current_access_unit));

  301. 

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

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

  304. 

  305.     sps->nal_unit_header.nal_ref_idc   = 3;

  306.     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;

  307. 

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

  309.     sps->constraint_set1_flag =

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

  311.     sps->constraint_set3_flag =

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

  313. 

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

  315. 

  316.     sps->seq_parameter_set_id = 0;

  317.     sps->chroma_format_idc    = 1;

  318. 

  319.     sps->log2_max_frame_num_minus4 = 4;

  320.     sps->pic_order_cnt_type        = 0;

  321.     sps->log2_max_pic_order_cnt_lsb_minus4 =

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

  323. 

  324.     sps->max_num_ref_frames =

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

  326.         1 + (ctx->b_per_p > 0);

  327. 

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

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

  330. 

  331.     sps->frame_mbs_only_flag = 1;

  332.     sps->direct_8x8_inference_flag = 1;

  333. 

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

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

  336.         sps->frame_cropping_flag = 1;

  337. 

  338.         sps->frame_crop_left_offset   = 0;

  339.         sps->frame_crop_right_offset  =

  340.             (16 * priv->mb_width - avctx->width) / 2;

  341.         sps->frame_crop_top_offset    = 0;

  342.         sps->frame_crop_bottom_offset =

  343.             (16 * priv->mb_height - avctx->height) / 2;

  344.     } else {

  345.         sps->frame_cropping_flag = 0;

  346.     }

  347. 

  348.     sps->vui_parameters_present_flag = 1;

  349. 

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

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

  352.         static const AVRational sar_idc[] = {

  353.             {   0,  0 },

  354.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  355.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  356.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  357.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  358.         };

  359.         int i;

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

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

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

  363.                 sps->vui.aspect_ratio_idc = i;

  364.                 break;

  365.             }

  366.         }

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

  368.             sps->vui.aspect_ratio_idc = 255;

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

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

  371.         }

  372.         sps->vui.aspect_ratio_info_present_flag = 1;

  373.     }

  374. 

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

  376.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  377.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  378.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  379.         sps->vui.video_signal_type_present_flag = 1;

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

  381.         sps->vui.video_full_range_flag =

  382.             avctx->color_range == AVCOL_RANGE_JPEG;

  383. 

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

  385.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  386.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  387.             sps->vui.colour_description_present_flag = 1;

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

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

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

  391.         }

  392.     } else {

  393.         sps->vui.video_format             = 5;

  394.         sps->vui.video_full_range_flag    = 0;

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

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

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

  398.     }

  399. 

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

  401.         sps->vui.chroma_loc_info_present_flag = 1;

  402.         sps->vui.chroma_sample_loc_type_top_field    =

  403.         sps->vui.chroma_sample_loc_type_bottom_field =

  404.             avctx->chroma_sample_location - 1;

  405.     }

  406. 

  407.     sps->vui.timing_info_present_flag = 1;

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

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

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

  411.         sps->vui.fixed_frame_rate_flag = 1;

  412.     } else {

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

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

  415.         sps->vui.fixed_frame_rate_flag = 0;

  416.     }

  417. 

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

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

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

  421. 

  422.         sps->vui.nal_hrd_parameters_present_flag = 1;

  423. 

  424.         hrd->cpb_cnt_minus1 = 0;

  425. 

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

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

  428.         hrd->bit_rate_scale =

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

  430.         hrd->bit_rate_value_minus1[0] =

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

  432. 

  433.         hrd->cpb_size_scale =

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

  435.         hrd->cpb_size_value_minus1[0] =

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

  437. 

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

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

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

  441. 

  442.         hrd->initial_cpb_removal_delay_length_minus1 = 23;

  443.         hrd->cpb_removal_delay_length_minus1         = 23;

  444.         hrd->dpb_output_delay_length_minus1          = 7;

  445.         hrd->time_offset_length                      = 0;

  446. 

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

  448. 

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

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

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

  452.             ctx->hrd_params.hrd.buffer_size;

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

  454.     } else {

  455.         sps->vui.nal_hrd_parameters_present_flag = 0;

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

  457.     }

  458. 

  459.     sps->vui.bitstream_restriction_flag    = 1;

  460.     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;

  461.     sps->vui.log2_max_mv_length_horizontal = 16;

  462.     sps->vui.log2_max_mv_length_vertical   = 16;

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

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

  465. 

  466.     pps->nal_unit_header.nal_ref_idc = 3;

  467.     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;

  468. 

  469.     pps->pic_parameter_set_id = 0;

  470.     pps->seq_parameter_set_id = 0;

  471. 

  472.     pps->entropy_coding_mode_flag =

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

  474.           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  475.           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);

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

  477.         pps->entropy_coding_mode_flag = 0;

  478. 

  479.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  480.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  481. 

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

  483. 

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

  485.         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  486.         sps->profile_idc == FF_PROFILE_H264_MAIN) {

  487.         pps->more_rbsp_data = 0;

  488.     } else {

  489.         pps->more_rbsp_data = 1;

  490. 

  491.         pps->transform_8x8_mode_flag = 1;

  492.     }

  493. 

  494.     *vseq = (VAEncSequenceParameterBufferH264) {

  495.         .seq_parameter_set_id = sps->seq_parameter_set_id,

  496.         .level_idc        = sps->level_idc,

  497.         .intra_period     = avctx->gop_size,

  498.         .intra_idr_period = avctx->gop_size,

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

  500. 

  501.         .bits_per_second       = avctx->bit_rate,

  502.         .max_num_ref_frames    = sps->max_num_ref_frames,

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

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

  505. 

  506.         .seq_fields.bits = {

  507.             .chroma_format_idc                 = sps->chroma_format_idc,

  508.             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,

  509.             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,

  510.             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,

  511.             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,

  512.             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,

  513.             .pic_order_cnt_type                = sps->pic_order_cnt_type,

  514.             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,

  515.             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,

  516.         },

  517. 

  518.         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,

  519.         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,

  520. 

  521.         .frame_cropping_flag      = sps->frame_cropping_flag,

  522.         .frame_crop_left_offset   = sps->frame_crop_left_offset,

  523.         .frame_crop_right_offset  = sps->frame_crop_right_offset,

  524.         .frame_crop_top_offset    = sps->frame_crop_top_offset,

  525.         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,

  526. 

  527.         .vui_parameters_present_flag = sps->vui_parameters_present_flag,

  528. 

  529.         .vui_fields.bits = {

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

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

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

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

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

  535.         },

  536. 

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

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

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

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

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

  542.     };

  543. 

  544.     *vpic = (VAEncPictureParameterBufferH264) {

  545.         .CurrPic = {

  546.             .picture_id = VA_INVALID_ID,

  547.             .flags      = VA_PICTURE_H264_INVALID,

  548.         },

  549. 

  550.         .coded_buf = VA_INVALID_ID,

  551. 

  552.         .pic_parameter_set_id = pps->pic_parameter_set_id,

  553.         .seq_parameter_set_id = pps->seq_parameter_set_id,

  554. 

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

  556.         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,

  557.         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,

  558. 

  559.         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,

  560.         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,

  561. 

  562.         .pic_fields.bits = {

  563.             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,

  564.             .weighted_pred_flag              = pps->weighted_pred_flag,

  565.             .weighted_bipred_idc             = pps->weighted_bipred_idc,

  566.             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,

  567.             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,

  568.             .deblocking_filter_control_present_flag =

  569.                 pps->deblocking_filter_control_present_flag,

  570.             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,

  571.             .pic_order_present_flag          =

  572.                 pps->bottom_field_pic_order_in_frame_present_flag,

  573.             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,

  574.         },

  575.     };

  576. 

  577.     return 0;

  578. }

  579. 

  580. static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,

  581.                                                  VAAPIEncodePicture *pic)

  582. {

  583.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  584.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

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

  586.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  587.     int i;

  588. 

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

  590.            sizeof(priv->current_access_unit));

  591. 

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

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

  594.         priv->frame_num      = 0;

  595.         priv->next_frame_num = 1;

  596.         priv->cpb_delay      = 0;

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

  598.         ++priv->idr_pic_count;

  599. 

  600.         priv->slice_type       = 7;

  601.         priv->primary_pic_type = 0;

  602.     } else {

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

  604. 

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

  606.             // Reference picture, so frame_num advances.

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

  608.                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

  609.         }

  610.         ++priv->cpb_delay;

  611. 

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

  613.             priv->slice_type       = 7;

  614.             priv->primary_pic_type = 0;

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

  616.             priv->slice_type       = 5;

  617.             priv->primary_pic_type = 1;

  618.         } else {

  619.             priv->slice_type       = 6;

  620.             priv->primary_pic_type = 2;

  621.         }

  622.     }

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

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

  625. 

  626.     if (priv->aud) {

  627.         priv->aud_needed = 1;

  628.         priv->raw_aud = (H264RawAUD) {

  629.             .nal_unit_header = {

  630.                 .nal_unit_type = H264_NAL_AUD,

  631.             },

  632.             .primary_pic_type  = priv->primary_pic_type,

  633.         };

  634.     } else {

  635.         priv->aud_needed = 0;

  636.     }

  637. 

  638.     priv->sei_needed = 0;

  639. 

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

  641.         priv->sei_needed |= SEI_IDENTIFIER;

  642. #if !CONFIG_VAAPI_1

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

  644.         priv->sei_cbr_workaround_needed = 1;

  645. #endif

  646. 

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

  648.         priv->sei_pic_timing = (H264RawSEIPicTiming) {

  649.             .cpb_removal_delay = 2 * priv->cpb_delay,

  650.             .dpb_output_delay  = 2 * priv->dpb_delay,

  651.         };

  652. 

  653.         priv->sei_needed |= SEI_TIMING;

  654.     }

  655. 

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

  657.         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {

  658.             .recovery_frame_cnt = 0,

  659.             .exact_match_flag   = 1,

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

  661.         };

  662. 

  663.         priv->sei_needed |= SEI_RECOVERY_POINT;

  664.     }

  665. 

  666.     vpic->CurrPic = (VAPictureH264) {

  667.         .picture_id          = pic->recon_surface,

  668.         .frame_idx           = priv->frame_num,

  669.         .flags               = 0,

  670.         .TopFieldOrderCnt    = priv->pic_order_cnt,

  671.         .BottomFieldOrderCnt = priv->pic_order_cnt,

  672.     };

  673. 

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

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

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

  677.             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

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

  679. 

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

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

  682.             .picture_id          = ref->recon_surface,

  683.             .frame_idx           = frame_num,

  684.             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,

  685.             .TopFieldOrderCnt    = pic_order_cnt,

  686.             .BottomFieldOrderCnt = pic_order_cnt,

  687.         };

  688.     }

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

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

  691.             .picture_id = VA_INVALID_ID,

  692.             .flags      = VA_PICTURE_H264_INVALID,

  693.         };

  694.     }

  695. 

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

  697. 

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

  699. 

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

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

  702. 

  703.     pic->nb_slices = 1;

  704. 

  705.     return 0;

  706. }

  707. 

  708. static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,

  709.                                                VAAPIEncodePicture *pic,

  710.                                                VAAPIEncodeSlice *slice)

  711. {

  712.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

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

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

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

  716.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  717.     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;

  718.     int i;

  719. 

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

  721.         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;

  722.         sh->nal_unit_header.nal_ref_idc   = 3;

  723.     } else {

  724.         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;

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

  726.     }

  727. 

  728.     // Only one slice per frame.

  729.     sh->first_mb_in_slice = 0;

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

  731. 

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

  733. 

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

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

  736. 

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

  738.         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);

  739. 

  740.     sh->direct_spatial_mv_pred_flag = 1;

  741. 

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

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

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

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

  746.     else

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

  748. 

  749. 

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

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

  752. 

  753.     vslice->macroblock_info = VA_INVALID_ID;

  754. 

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

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

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

  758. 

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

  760. 

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

  762. 

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

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

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

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

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

  768.     }

  769. 

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

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

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

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

  774.                    pic->type == PICTURE_TYPE_B);

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

  776.     }

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

  778.         // Forward reference for B-frame.

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

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

  781.     }

  782. 

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

  784. 

  785.     return 0;

  786. }

  787. 

  788. static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)

  789. {

  790.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  791.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  792.     int err;

  793. 

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

  795.     if (err < 0)

  796.         return err;

  797. 

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

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

  800. 

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

  802.         priv->fixed_qp_p = priv->qp;

  803.         if (avctx->i_quant_factor > 0.0)

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

  805.                                         avctx->i_quant_offset) + 0.5);

  806.         else

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

  808.         if (avctx->b_quant_factor > 0.0)

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

  810.                                       avctx->b_quant_offset) + 0.5);

  811.         else

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

  813. 

  814.         priv->sei &= ~SEI_TIMING;

  815. 

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

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

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

  819. 

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

  821.                ctx->va_rc_mode == VA_RC_VBR) {

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

  823.         priv->fixed_qp_idr = 26;

  824.         priv->fixed_qp_p   = 26;

  825.         priv->fixed_qp_b   = 26;

  826. 

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

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

  829.                avctx->bit_rate);

  830. 

  831.     } else {

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

  833.     }

  834. 

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

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

  837. 

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

  839.         const char *lavc  = LIBAVCODEC_IDENT;

  840.         const char *vaapi = VA_VERSION_S;

  841.         const char *driver;

  842.         int len;

  843. 

  844.         memcpy(priv->sei_identifier.uuid_iso_iec_11578,

  845.                vaapi_encode_h264_sei_identifier_uuid,

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

  847. 

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

  849.         if (!driver)

  850.             driver = "unknown driver";

  851. 

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

  853.         if (len >= 0) {

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

  855.             if (!priv->sei_identifier_string)

  856.                 return AVERROR(ENOMEM);

  857. 

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

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

  860. 

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

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

  863.         }

  864.     }

  865. 

  866.     return 0;

  867. }

  868. 

  869. static const VAAPIEncodeType vaapi_encode_type_h264 = {

  870.     .priv_data_size        = sizeof(VAAPIEncodeH264Context),

  871. 

  872.     .configure             = &vaapi_encode_h264_configure,

  873. 

  874.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),

  875.     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,

  876. 

  877.     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),

  878.     .init_picture_params   = &vaapi_encode_h264_init_picture_params,

  879. 

  880.     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),

  881.     .init_slice_params     = &vaapi_encode_h264_init_slice_params,

  882. 

  883.     .sequence_header_type  = VAEncPackedHeaderSequence,

  884.     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,

  885. 

  886.     .slice_header_type     = VAEncPackedHeaderH264_Slice,

  887.     .write_slice_header    = &vaapi_encode_h264_write_slice_header,

  888. 

  889.     .write_extra_header    = &vaapi_encode_h264_write_extra_header,

  890. };

  891. 

  892. static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)

  893. {

  894.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  895.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  896. 

  897.     ctx->codec = &vaapi_encode_type_h264;

  898. 

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

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

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

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

  903. 

  904.     switch (avctx->profile) {

  905.     case FF_PROFILE_H264_BASELINE:

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

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

  908.         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;

  909.     case FF_PROFILE_H264_CONSTRAINED_BASELINE:

  910.         ctx->va_profile = VAProfileH264ConstrainedBaseline;

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

  912.             avctx->max_b_frames = 0;

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

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

  915.         }

  916.         break;

  917.     case FF_PROFILE_H264_MAIN:

  918.         ctx->va_profile = VAProfileH264Main;

  919.         break;

  920.     case FF_PROFILE_H264_EXTENDED:

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

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

  923.         return AVERROR_PATCHWELCOME;

  924.     case FF_PROFILE_UNKNOWN:

  925.     case FF_PROFILE_H264_HIGH:

  926.         ctx->va_profile = VAProfileH264High;

  927.         break;

  928.     case FF_PROFILE_H264_HIGH_10:

  929.     case FF_PROFILE_H264_HIGH_10_INTRA:

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

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

  932.         return AVERROR_PATCHWELCOME;

  933.     case FF_PROFILE_H264_HIGH_422:

  934.     case FF_PROFILE_H264_HIGH_422_INTRA:

  935.     case FF_PROFILE_H264_HIGH_444:

  936.     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:

  937.     case FF_PROFILE_H264_HIGH_444_INTRA:

  938.     case FF_PROFILE_H264_CAVLC_444:

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

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

  941.         return AVERROR_PATCHWELCOME;

  942.     default:

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

  944.                avctx->profile);

  945.         return AVERROR(EINVAL);

  946.     }

  947.     if (priv->low_power) {

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

  949.         ctx->va_entrypoint = VAEntrypointEncSliceLP;

  950. #else

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

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

  953.         return AVERROR(EINVAL);

  954. #endif

  955.     } else {

  956.         ctx->va_entrypoint = VAEntrypointEncSlice;

  957.     }

  958. 

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

  960.     ctx->va_rt_format = VA_RT_FORMAT_YUV420;

  961. 

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

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

  964.             ctx->va_rc_mode = VA_RC_CBR;

  965.         else

  966.             ctx->va_rc_mode = VA_RC_VBR;

  967.     } else

  968.         ctx->va_rc_mode = VA_RC_CQP;

  969. 

  970.     ctx->va_packed_headers =

  971.         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.

  972.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  973.         VA_ENC_PACKED_HEADER_MISC;      // SEI.

  974. 

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

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

  977. 

  978.     return ff_vaapi_encode_init(avctx);

  979. }

  980. 

  981. static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)

  982. {

  983.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  984. 

  985.     ff_cbs_close(&priv->cbc);

  986.     av_freep(&priv->sei_identifier_string);

  987. 

  988.     return ff_vaapi_encode_close(avctx);

  989. }

  990. 

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

  992. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  993. static const AVOption vaapi_encode_h264_options[] = {

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

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

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

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

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

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

  1000.       OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

  1001.     { "coder", "Entropy coder type",

  1002.       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },

  1003.         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1004.         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1005.         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1006.         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1007. 

  1008.     { "aud", "Include AUD",

  1009.       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },

  1010. 

  1011.     { "sei", "Set SEI to include",

  1012.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

  1013.       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },

  1014.       0, INT_MAX, FLAGS, "sei" },

  1015.     { "identifier", "Include encoder version identifier",

  1016.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },

  1017.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1018.     { "timing", "Include timing parameters (buffering_period and pic_timing)",

  1019.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },

  1020.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1021.     { "recovery_point", "Include recovery points where appropriate",

  1022.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },

  1023.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1024. 

  1025.     { "profile", "Set profile (profile_idc and constraint_set*_flag)",

  1026.       OFFSET(profile), AV_OPT_TYPE_INT,

  1027.       { .i64 = FF_PROFILE_H264_HIGH }, 0x0000, 0xffff, FLAGS, "profile" },

  1028. 

  1029. #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \

  1030.       { .i64 = value }, 0, 0, FLAGS, "profile"

  1031.     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },

  1032.     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },

  1033.     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },

  1034. #undef PROFILE

  1035. 

  1036.     { "level", "Set level (level_idc)",

  1037.       OFFSET(level), AV_OPT_TYPE_INT,

  1038.       { .i64 = 51 }, 0x00, 0xff, FLAGS, "level" },

  1039. 

  1040. #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \

  1041.       { .i64 = value }, 0, 0, FLAGS, "level"

  1042.     { LEVEL("1",   10) },

  1043.     { LEVEL("1.1", 11) },

  1044.     { LEVEL("1.2", 12) },

  1045.     { LEVEL("1.3", 13) },

  1046.     { LEVEL("2",   20) },

  1047.     { LEVEL("2.1", 21) },

  1048.     { LEVEL("2.2", 22) },

  1049.     { LEVEL("3",   30) },

  1050.     { LEVEL("3.1", 31) },

  1051.     { LEVEL("3.2", 32) },

  1052.     { LEVEL("4",   40) },

  1053.     { LEVEL("4.1", 41) },

  1054.     { LEVEL("4.2", 42) },

  1055.     { LEVEL("5",   50) },

  1056.     { LEVEL("5.1", 51) },

  1057.     { LEVEL("5.2", 52) },

  1058.     { LEVEL("6",   60) },

  1059.     { LEVEL("6.1", 61) },

  1060.     { LEVEL("6.2", 62) },

  1061. #undef LEVEL

  1062. 

  1063.     { NULL },

  1064. };

  1065. 

  1066. static const AVCodecDefault vaapi_encode_h264_defaults[] = {

  1067.     { "b",              "0"   },

  1068.     { "bf",             "2"   },

  1069.     { "g",              "120" },

  1070.     { "i_qfactor",      "1"   },

  1071.     { "i_qoffset",      "0"   },

  1072.     { "b_qfactor",      "6/5" },

  1073.     { "b_qoffset",      "0"   },

  1074.     { "qmin",           "0"   },

  1075.     { NULL },

  1076. };

  1077. 

  1078. static const AVClass vaapi_encode_h264_class = {

  1079.     .class_name = "h264_vaapi",

  1080.     .item_name  = av_default_item_name,

  1081.     .option     = vaapi_encode_h264_options,

  1082.     .version    = LIBAVUTIL_VERSION_INT,

  1083. };

  1084. 

  1085. AVCodec ff_h264_vaapi_encoder = {

  1086.     .name           = "h264_vaapi",

  1087.     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),

  1088.     .type           = AVMEDIA_TYPE_VIDEO,

  1089.     .id             = AV_CODEC_ID_H264,

  1090.     .priv_data_size = sizeof(VAAPIEncodeH264Context),

  1091.     .init           = &vaapi_encode_h264_init,

  1092.     .encode2        = &ff_vaapi_encode2,

  1093.     .close          = &vaapi_encode_h264_close,

  1094.     .priv_class     = &vaapi_encode_h264_class,

  1095.     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,

  1096.     .defaults       = vaapi_encode_h264_defaults,

  1097.     .pix_fmts = (const enum AVPixelFormat[]) {

  1098.         AV_PIX_FMT_VAAPI,

  1099.         AV_PIX_FMT_NONE,

  1100.     },

  1101.     .wrapper_name   = "vaapi",

  1102. };