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FFmpeg/libavcodec/vaapi_encode_h264.c

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  1. /*

  2.  * This file is part of FFmpeg.

  3.  *

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

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

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

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

  8.  *

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

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

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

  12.  * Lesser General Public License for more details.

  13.  *

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

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

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

  17.  */

  18. 

  19. #include <string.h>

  20. 

  21. #include <va/va.h>

  22. #include <va/va_enc_h264.h>

  23. 

  24. #include "libavutil/avassert.h"

  25. #include "libavutil/common.h"

  26. #include "libavutil/internal.h"

  27. #include "libavutil/opt.h"

  28. 

  29. #include "avcodec.h"

  30. #include "cbs.h"

  31. #include "cbs_h264.h"

  32. #include "h264.h"

  33. #include "h264_levels.h"

  34. #include "h264_sei.h"

  35. #include "internal.h"

  36. #include "vaapi_encode.h"

  37. 

  38. enum {

  39.     SEI_TIMING         = 0x01,

  40.     SEI_IDENTIFIER     = 0x02,

  41.     SEI_RECOVERY_POINT = 0x04,

  42. };

  43. 

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

  45. static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = {

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

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

  48. };

  49. 

  50. typedef struct VAAPIEncodeH264Picture {

  51.     int frame_num;

  52.     int pic_order_cnt;

  53. 

  54.     int64_t last_idr_frame;

  55.     uint16_t idr_pic_id;

  56. 

  57.     int primary_pic_type;

  58.     int slice_type;

  59. 

  60.     int cpb_delay;

  61.     int dpb_delay;

  62. } VAAPIEncodeH264Picture;

  63. 

  64. typedef struct VAAPIEncodeH264Context {

  65.     VAAPIEncodeContext common;

  66. 

  67.     // User options.

  68.     int qp;

  69.     int quality;

  70.     int coder;

  71.     int aud;

  72.     int sei;

  73.     int profile;

  74.     int level;

  75. 

  76.     // Derived settings.

  77.     int mb_width;

  78.     int mb_height;

  79. 

  80.     int fixed_qp_idr;

  81.     int fixed_qp_p;

  82.     int fixed_qp_b;

  83. 

  84.     int dpb_frames;

  85. 

  86.     // Writer structures.

  87.     CodedBitstreamContext *cbc;

  88.     CodedBitstreamFragment current_access_unit;

  89. 

  90.     H264RawAUD   raw_aud;

  91.     H264RawSPS   raw_sps;

  92.     H264RawPPS   raw_pps;

  93.     H264RawSEI   raw_sei;

  94.     H264RawSlice raw_slice;

  95. 

  96.     H264RawSEIBufferingPeriod      sei_buffering_period;

  97.     H264RawSEIPicTiming            sei_pic_timing;

  98.     H264RawSEIRecoveryPoint        sei_recovery_point;

  99.     H264RawSEIUserDataUnregistered sei_identifier;

  100.     char                          *sei_identifier_string;

  101. 

  102.     int aud_needed;

  103.     int sei_needed;

  104.     int sei_cbr_workaround_needed;

  105. } VAAPIEncodeH264Context;

  106. 

  107. 

  108. static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,

  109.                                                char *data, size_t *data_len,

  110.                                                CodedBitstreamFragment *au)

  111. {

  112.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  113.     int err;

  114. 

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

  116.     if (err < 0) {

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

  118.         return err;

  119.     }

  120. 

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

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

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

  124.                8 * au->data_size - au->data_bit_padding);

  125.         return AVERROR(ENOSPC);

  126.     }

  127. 

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

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

  130. 

  131.     return 0;

  132. }

  133. 

  134. static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,

  135.                                      CodedBitstreamFragment *au,

  136.                                      void *nal_unit)

  137. {

  138.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  139.     H264RawNALUnitHeader *header = nal_unit;

  140.     int err;

  141. 

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

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

  144.     if (err < 0) {

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

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

  147.         return err;

  148.     }

  149. 

  150.     return 0;

  151. }

  152. 

  153. static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,

  154.                                                    char *data, size_t *data_len)

  155. {

  156.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  158.     int err;

  159. 

  160.     if (priv->aud_needed) {

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

  162.         if (err < 0)

  163.             goto fail;

  164.         priv->aud_needed = 0;

  165.     }

  166. 

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

  168.     if (err < 0)

  169.         goto fail;

  170. 

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

  172.     if (err < 0)

  173.         goto fail;

  174. 

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

  176. fail:

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

  178.     return err;

  179. }

  180. 

  181. static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,

  182.                                                 VAAPIEncodePicture *pic,

  183.                                                 VAAPIEncodeSlice *slice,

  184.                                                 char *data, size_t *data_len)

  185. {

  186.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  188.     int err;

  189. 

  190.     if (priv->aud_needed) {

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

  192.         if (err < 0)

  193.             goto fail;

  194.         priv->aud_needed = 0;

  195.     }

  196. 

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

  198.     if (err < 0)

  199.         goto fail;

  200. 

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

  202. fail:

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

  204.     return err;

  205. }

  206. 

  207. static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,

  208.                                                 VAAPIEncodePicture *pic,

  209.                                                 int index, int *type,

  210.                                                 char *data, size_t *data_len)

  211. {

  212.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  214.     int err, i;

  215. 

  216.     if (priv->sei_needed) {

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

  218. 

  219.         if (priv->aud_needed) {

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

  221.             if (err < 0)

  222.                 goto fail;

  223.             priv->aud_needed = 0;

  224.         }

  225. 

  226.         *sei = (H264RawSEI) {

  227.             .nal_unit_header = {

  228.                 .nal_unit_type = H264_NAL_SEI,

  229.             },

  230.         };

  231. 

  232.         i = 0;

  233. 

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

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

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

  237.             ++i;

  238.         }

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

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

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

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

  243.                 ++i;

  244.             }

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

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

  247.             ++i;

  248.         }

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

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

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

  252.             ++i;

  253.         }

  254. 

  255.         sei->payload_count = i;

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

  257. 

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

  259.         if (err < 0)

  260.             goto fail;

  261.         priv->sei_needed = 0;

  262. 

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

  264.         if (err < 0)

  265.             goto fail;

  266. 

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

  268. 

  269.         *type = VAEncPackedHeaderRawData;

  270.         return 0;

  271. 

  272. #if !CONFIG_VAAPI_1

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

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

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

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

  277.         // driver and inserted into the stream.

  278.         *data_len = 0;

  279.         *type = VAEncPackedHeaderH264_SEI;

  280.         priv->sei_cbr_workaround_needed = 0;

  281.         return 0;

  282. #endif

  283. 

  284.     } else {

  285.         return AVERROR_EOF;

  286.     }

  287. 

  288. fail:

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

  290.     return err;

  291. }

  292. 

  293. static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)

  294. {

  295.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  296.     VAAPIEncodeH264Context           *priv = avctx->priv_data;

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

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

  299.     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;

  300.     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;

  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. 

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

  311.         avctx->profile == FF_PROFILE_H264_MAIN)

  312.         sps->constraint_set1_flag = 1;

  313. 

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

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

  316. 

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

  318.         avctx->profile == FF_PROFILE_H264_HIGH) {

  319.         sps->constraint_set4_flag = 1;

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

  321.     }

  322. 

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

  324.         priv->dpb_frames = 0;

  325.     else

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

  327. 

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

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

  330.     } else {

  331.         const H264LevelDescriptor *level;

  332. 

  333.         level = ff_h264_guess_level(sps->profile_idc,

  334.                                     avctx->bit_rate,

  335.                                     priv->mb_width  * 16,

  336.                                     priv->mb_height * 16,

  337.                                     priv->dpb_frames);

  338.         if (level) {

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

  340.             if (level->constraint_set3_flag)

  341.                 sps->constraint_set3_flag = 1;

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

  343.         } else {

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

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

  346.             sps->level_idc = 62;

  347.         }

  348.     }

  349. 

  350.     sps->seq_parameter_set_id = 0;

  351.     sps->chroma_format_idc    = 1;

  352. 

  353.     sps->log2_max_frame_num_minus4 = 4;

  354.     sps->pic_order_cnt_type        = 0;

  355.     sps->log2_max_pic_order_cnt_lsb_minus4 = 4;

  356. 

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

  358. 

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

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

  361. 

  362.     sps->frame_mbs_only_flag = 1;

  363.     sps->direct_8x8_inference_flag = 1;

  364. 

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

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

  367.         sps->frame_cropping_flag = 1;

  368. 

  369.         sps->frame_crop_left_offset   = 0;

  370.         sps->frame_crop_right_offset  =

  371.             (16 * priv->mb_width - avctx->width) / 2;

  372.         sps->frame_crop_top_offset    = 0;

  373.         sps->frame_crop_bottom_offset =

  374.             (16 * priv->mb_height - avctx->height) / 2;

  375.     } else {

  376.         sps->frame_cropping_flag = 0;

  377.     }

  378. 

  379.     sps->vui_parameters_present_flag = 1;

  380. 

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

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

  383.         static const AVRational sar_idc[] = {

  384.             {   0,  0 },

  385.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  386.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  387.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  388.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  389.         };

  390.         int num, den, i;

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

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

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

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

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

  396.                 sps->vui.aspect_ratio_idc = i;

  397.                 break;

  398.             }

  399.         }

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

  401.             sps->vui.aspect_ratio_idc = 255;

  402.             sps->vui.sar_width  = num;

  403.             sps->vui.sar_height = den;

  404.         }

  405.         sps->vui.aspect_ratio_info_present_flag = 1;

  406.     }

  407. 

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

  409.         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

  410.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  411.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  412.         sps->vui.video_signal_type_present_flag = 1;

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

  414.         sps->vui.video_full_range_flag =

  415.             avctx->color_range == AVCOL_RANGE_JPEG;

  416. 

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

  418.             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  419.             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {

  420.             sps->vui.colour_description_present_flag = 1;

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

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

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

  424.         }

  425.     } else {

  426.         sps->vui.video_format             = 5;

  427.         sps->vui.video_full_range_flag    = 0;

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

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

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

  431.     }

  432. 

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

  434.         sps->vui.chroma_loc_info_present_flag = 1;

  435.         sps->vui.chroma_sample_loc_type_top_field    =

  436.         sps->vui.chroma_sample_loc_type_bottom_field =

  437.             avctx->chroma_sample_location - 1;

  438.     }

  439. 

  440.     sps->vui.timing_info_present_flag = 1;

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

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

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

  444.         sps->vui.fixed_frame_rate_flag = 1;

  445.     } else {

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

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

  448.         sps->vui.fixed_frame_rate_flag = 0;

  449.     }

  450. 

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

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

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

  454. 

  455.         sps->vui.nal_hrd_parameters_present_flag = 1;

  456. 

  457.         hrd->cpb_cnt_minus1 = 0;

  458. 

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

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

  461.         hrd->bit_rate_scale =

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

  463.         hrd->bit_rate_value_minus1[0] =

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

  465. 

  466.         hrd->cpb_size_scale =

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

  468.         hrd->cpb_size_value_minus1[0] =

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

  470. 

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

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

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

  474. 

  475.         hrd->initial_cpb_removal_delay_length_minus1 = 23;

  476.         hrd->cpb_removal_delay_length_minus1         = 23;

  477.         hrd->dpb_output_delay_length_minus1          = 7;

  478.         hrd->time_offset_length                      = 0;

  479. 

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

  481. 

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

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

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

  485.             ctx->hrd_params.hrd.buffer_size;

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

  487.     } else {

  488.         sps->vui.nal_hrd_parameters_present_flag = 0;

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

  490.     }

  491. 

  492.     sps->vui.bitstream_restriction_flag    = 1;

  493.     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;

  494.     sps->vui.log2_max_mv_length_horizontal = 15;

  495.     sps->vui.log2_max_mv_length_vertical   = 15;

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

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

  498. 

  499.     pps->nal_unit_header.nal_ref_idc = 3;

  500.     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;

  501. 

  502.     pps->pic_parameter_set_id = 0;

  503.     pps->seq_parameter_set_id = 0;

  504. 

  505.     pps->entropy_coding_mode_flag =

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

  507.           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  508.           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);

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

  510.         pps->entropy_coding_mode_flag = 0;

  511. 

  512.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  513.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  514. 

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

  516. 

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

  518.         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  519.         sps->profile_idc == FF_PROFILE_H264_MAIN) {

  520.         pps->more_rbsp_data = 0;

  521.     } else {

  522.         pps->more_rbsp_data = 1;

  523. 

  524.         pps->transform_8x8_mode_flag = 1;

  525.     }

  526. 

  527.     *vseq = (VAEncSequenceParameterBufferH264) {

  528.         .seq_parameter_set_id = sps->seq_parameter_set_id,

  529.         .level_idc        = sps->level_idc,

  530.         .intra_period     = ctx->gop_size,

  531.         .intra_idr_period = ctx->gop_size,

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

  533. 

  534.         .bits_per_second       = ctx->va_bit_rate,

  535.         .max_num_ref_frames    = sps->max_num_ref_frames,

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

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

  538. 

  539.         .seq_fields.bits = {

  540.             .chroma_format_idc                 = sps->chroma_format_idc,

  541.             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,

  542.             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,

  543.             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,

  544.             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,

  545.             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,

  546.             .pic_order_cnt_type                = sps->pic_order_cnt_type,

  547.             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,

  548.             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,

  549.         },

  550. 

  551.         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,

  552.         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,

  553. 

  554.         .frame_cropping_flag      = sps->frame_cropping_flag,

  555.         .frame_crop_left_offset   = sps->frame_crop_left_offset,

  556.         .frame_crop_right_offset  = sps->frame_crop_right_offset,

  557.         .frame_crop_top_offset    = sps->frame_crop_top_offset,

  558.         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,

  559. 

  560.         .vui_parameters_present_flag = sps->vui_parameters_present_flag,

  561. 

  562.         .vui_fields.bits = {

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

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

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

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

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

  568.         },

  569. 

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

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

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

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

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

  575.     };

  576. 

  577.     *vpic = (VAEncPictureParameterBufferH264) {

  578.         .CurrPic = {

  579.             .picture_id = VA_INVALID_ID,

  580.             .flags      = VA_PICTURE_H264_INVALID,

  581.         },

  582. 

  583.         .coded_buf = VA_INVALID_ID,

  584. 

  585.         .pic_parameter_set_id = pps->pic_parameter_set_id,

  586.         .seq_parameter_set_id = pps->seq_parameter_set_id,

  587. 

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

  589.         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,

  590.         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,

  591. 

  592.         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,

  593.         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,

  594. 

  595.         .pic_fields.bits = {

  596.             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,

  597.             .weighted_pred_flag              = pps->weighted_pred_flag,

  598.             .weighted_bipred_idc             = pps->weighted_bipred_idc,

  599.             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,

  600.             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,

  601.             .deblocking_filter_control_present_flag =

  602.                 pps->deblocking_filter_control_present_flag,

  603.             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,

  604.             .pic_order_present_flag          =

  605.                 pps->bottom_field_pic_order_in_frame_present_flag,

  606.             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,

  607.         },

  608.     };

  609. 

  610.     return 0;

  611. }

  612. 

  613. static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,

  614.                                                  VAAPIEncodePicture *pic)

  615. {

  616.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  617.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

  618.     VAAPIEncodeH264Picture          *hpic = pic->priv_data;

  619.     VAAPIEncodePicture              *prev = pic->prev;

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

  621.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  622.     int i;

  623. 

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

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

  626. 

  627.         hpic->frame_num      = 0;

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

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

  630. 

  631.         hpic->primary_pic_type = 0;

  632.         hpic->slice_type       = 7;

  633.     } else {

  634.         av_assert0(prev);

  635. 

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

  637. 

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

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

  640. 

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

  642.             hpic->slice_type       = 7;

  643.             hpic->primary_pic_type = 0;

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

  645.             hpic->slice_type       = 5;

  646.             hpic->primary_pic_type = 1;

  647.         } else {

  648.             hpic->slice_type       = 6;

  649.             hpic->primary_pic_type = 2;

  650.         }

  651.     }

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

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

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

  655. 

  656.     if (priv->aud) {

  657.         priv->aud_needed = 1;

  658.         priv->raw_aud = (H264RawAUD) {

  659.             .nal_unit_header = {

  660.                 .nal_unit_type = H264_NAL_AUD,

  661.             },

  662.             .primary_pic_type  = hpic->primary_pic_type,

  663.         };

  664.     } else {

  665.         priv->aud_needed = 0;

  666.     }

  667. 

  668.     priv->sei_needed = 0;

  669. 

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

  671.         priv->sei_needed |= SEI_IDENTIFIER;

  672. #if !CONFIG_VAAPI_1

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

  674.         priv->sei_cbr_workaround_needed = 1;

  675. #endif

  676. 

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

  678.         priv->sei_pic_timing = (H264RawSEIPicTiming) {

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

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

  681.         };

  682. 

  683.         priv->sei_needed |= SEI_TIMING;

  684.     }

  685. 

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

  687.         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {

  688.             .recovery_frame_cnt = 0,

  689.             .exact_match_flag   = 1,

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

  691.         };

  692. 

  693.         priv->sei_needed |= SEI_RECOVERY_POINT;

  694.     }

  695. 

  696.     vpic->CurrPic = (VAPictureH264) {

  697.         .picture_id          = pic->recon_surface,

  698.         .frame_idx           = hpic->frame_num,

  699.         .flags               = 0,

  700.         .TopFieldOrderCnt    = hpic->pic_order_cnt,

  701.         .BottomFieldOrderCnt = hpic->pic_order_cnt,

  702.     };

  703. 

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

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

  706.         VAAPIEncodeH264Picture *href;

  707. 

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

  709.         href = ref->priv_data;

  710. 

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

  712.             .picture_id          = ref->recon_surface,

  713.             .frame_idx           = href->frame_num,

  714.             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,

  715.             .TopFieldOrderCnt    = href->pic_order_cnt,

  716.             .BottomFieldOrderCnt = href->pic_order_cnt,

  717.         };

  718.     }

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

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

  721.             .picture_id = VA_INVALID_ID,

  722.             .flags      = VA_PICTURE_H264_INVALID,

  723.         };

  724.     }

  725. 

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

  727. 

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

  729. 

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

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

  732. 

  733.     return 0;

  734. }

  735. 

  736. static void vaapi_encode_h264_default_ref_pic_list(AVCodecContext *avctx,

  737.                                                    VAAPIEncodePicture *pic,

  738.                                                    VAAPIEncodePicture **rpl0,

  739.                                                    VAAPIEncodePicture **rpl1,

  740.                                                    int *rpl_size)

  741. {

  742.     VAAPIEncodePicture *prev;

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

  744.     int i, j, n = 0;

  745. 

  746.     prev = pic->prev;

  747.     av_assert0(prev);

  748.     hp = pic->priv_data;

  749. 

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

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

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

  753. 

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

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

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

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

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

  759.                     break;

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

  761.             }

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

  763. 

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

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

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

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

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

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

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

  771.                         break;

  772.                 } else {

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

  774.                         break;

  775.                 }

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

  777.             }

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

  779. 

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

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

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

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

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

  785.                         hn->pic_order_cnt > hc->pic_order_cnt)

  786.                         break;

  787.                 } else {

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

  789.                         break;

  790.                 }

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

  792.             }

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

  794.         }

  795. 

  796.         ++n;

  797.     }

  798. 

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

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

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

  802.                 break;

  803.         }

  804.         if (i == n)

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

  806.     }

  807. 

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

  809.         pic->type == PICTURE_TYPE_B) {

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

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

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

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

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

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

  816.         }

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

  818.     }

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

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

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

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

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

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

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

  826.         }

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

  828.     }

  829. 

  830.     *rpl_size = n;

  831. }

  832. 

  833. static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,

  834.                                                VAAPIEncodePicture *pic,

  835.                                                VAAPIEncodeSlice *slice)

  836. {

  837.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

  838.     VAAPIEncodeH264Picture          *hpic = pic->priv_data;

  839.     VAAPIEncodePicture              *prev = pic->prev;

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

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

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

  843.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  844.     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;

  845.     int i, j;

  846. 

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

  848.         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;

  849.         sh->nal_unit_header.nal_ref_idc   = 3;

  850.     } else {

  851.         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;

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

  853.     }

  854. 

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

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

  857. 

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

  859. 

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

  861.         ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

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

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

  864.         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);

  865. 

  866.     sh->direct_spatial_mv_pred_flag = 1;

  867. 

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

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

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

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

  872.     else

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

  874. 

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

  876.         VAAPIEncodePicture *discard_list[MAX_DPB_SIZE];

  877.         int discard = 0, keep = 0;

  878. 

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

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

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

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

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

  884.                     break;

  885.             }

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

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

  888.                 ++discard;

  889.             } else {

  890.                 ++keep;

  891.             }

  892.         }

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

  894. 

  895.         if (discard == 0) {

  896.             sh->adaptive_ref_pic_marking_mode_flag = 0;

  897.         } else {

  898.             sh->adaptive_ref_pic_marking_mode_flag = 1;

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

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

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

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

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

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

  905.             }

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

  907.         }

  908.     }

  909. 

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

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

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

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

  914.         VAAPIEncodeH264Picture *href;

  915.         int n;

  916. 

  917.         vaapi_encode_h264_default_ref_pic_list(avctx, pic,

  918.                                                def_l0, def_l1, &n);

  919. 

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

  921.             int need_rplm = 0;

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

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

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

  925.                     need_rplm = 1;

  926.             }

  927. 

  928.             sh->ref_pic_list_modification_flag_l0 = need_rplm;

  929.             if (need_rplm) {

  930.                 int pic_num = hpic->frame_num;

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

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

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

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

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

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

  937.                             pic_num - href->frame_num - 1;

  938.                     } else {

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

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

  941.                             href->frame_num - pic_num - 1;

  942.                     }

  943.                     pic_num = href->frame_num;

  944.                 }

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

  946.             }

  947. 

  948.         } else {

  949.             int need_rplm_l0 = 0, need_rplm_l1 = 0;

  950.             int n0 = 0, n1 = 0;

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

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

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

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

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

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

  957.                         need_rplm_l0 = 1;

  958.                     ++n0;

  959.                 } else {

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

  961.                         need_rplm_l1 = 1;

  962.                     ++n1;

  963.                 }

  964.             }

  965. 

  966.             sh->ref_pic_list_modification_flag_l0 = need_rplm_l0;

  967.             if (need_rplm_l0) {

  968.                 int pic_num = hpic->frame_num;

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

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

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

  972.                         continue;

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

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

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

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

  977.                             pic_num - href->frame_num - 1;

  978.                     } else {

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

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

  981.                             href->frame_num - pic_num - 1;

  982.                     }

  983.                     pic_num = href->frame_num;

  984.                     ++j;

  985.                 }

  986.                 av_assert0(j == n0);

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

  988.             }

  989. 

  990.             sh->ref_pic_list_modification_flag_l1 = need_rplm_l1;

  991.             if (need_rplm_l1) {

  992.                 int pic_num = hpic->frame_num;

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

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

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

  996.                         continue;

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

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

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

  1000.                         sh->rplm_l1[j].abs_diff_pic_num_minus1 =

  1001.                             pic_num - href->frame_num - 1;

  1002.                     } else {

  1003.                         sh->rplm_l1[j].modification_of_pic_nums_idc = 1;

  1004.                         sh->rplm_l1[j].abs_diff_pic_num_minus1 =

  1005.                             href->frame_num - pic_num - 1;

  1006.                     }

  1007.                     pic_num = href->frame_num;

  1008.                     ++j;

  1009.                 }

  1010.                 av_assert0(j == n1);

  1011.                 sh->rplm_l1[j].modification_of_pic_nums_idc = 3;

  1012.             }

  1013.         }

  1014.     }

  1015. 

  1016.     vslice->macroblock_address = slice->block_start;

  1017.     vslice->num_macroblocks    = slice->block_size;

  1018. 

  1019.     vslice->macroblock_info = VA_INVALID_ID;

  1020. 

  1021.     vslice->slice_type           = sh->slice_type % 5;

  1022.     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;

  1023.     vslice->idr_pic_id           = sh->idr_pic_id;

  1024. 

  1025.     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;

  1026. 

  1027.     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;

  1028. 

  1029.     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {

  1030.         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;

  1031.         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;

  1032.         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;

  1033.         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;

  1034.     }

  1035. 

  1036.     av_assert0(pic->nb_refs <= 2);

  1037.     if (pic->nb_refs >= 1) {

  1038.         // Backward reference for P- or B-frame.

  1039.         av_assert0(pic->type == PICTURE_TYPE_P ||

  1040.                    pic->type == PICTURE_TYPE_B);

  1041.         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];

  1042.     }

  1043.     if (pic->nb_refs >= 2) {

  1044.         // Forward reference for B-frame.

  1045.         av_assert0(pic->type == PICTURE_TYPE_B);

  1046.         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];

  1047.     }

  1048. 

  1049.     vslice->slice_qp_delta = sh->slice_qp_delta;

  1050. 

  1051.     return 0;

  1052. }

  1053. 

  1054. static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)

  1055. {

  1056.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1057.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1058.     int err;

  1059. 

  1060.     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);

  1061.     if (err < 0)

  1062.         return err;

  1063. 

  1064.     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;

  1065.     priv->mb_height = FFALIGN(avctx->height, 16) / 16;

  1066. 

  1067.     if (ctx->va_rc_mode == VA_RC_CQP) {

  1068.         priv->fixed_qp_p = priv->qp;

  1069.         if (avctx->i_quant_factor > 0.0)

  1070.             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +

  1071.                                         avctx->i_quant_offset) + 0.5);

  1072.         else

  1073.             priv->fixed_qp_idr = priv->fixed_qp_p;

  1074.         if (avctx->b_quant_factor > 0.0)

  1075.             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +

  1076.                                       avctx->b_quant_offset) + 0.5);

  1077.         else

  1078.             priv->fixed_qp_b = priv->fixed_qp_p;

  1079. 

  1080.         priv->sei &= ~SEI_TIMING;

  1081. 

  1082.         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "

  1083.                "%d / %d / %d for IDR- / P- / B-frames.\n",

  1084.                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);

  1085. 

  1086.     } else if (ctx->va_rc_mode == VA_RC_CBR ||

  1087.                ctx->va_rc_mode == VA_RC_VBR) {

  1088.         // These still need to be  set for pic_init_qp/slice_qp_delta.

  1089.         priv->fixed_qp_idr = 26;

  1090.         priv->fixed_qp_p   = 26;

  1091.         priv->fixed_qp_b   = 26;

  1092. 

  1093.     } else {

  1094.         av_assert0(0 && "Invalid RC mode.");

  1095.     }

  1096. 

  1097.     if (priv->sei & SEI_IDENTIFIER) {

  1098.         const char *lavc  = LIBAVCODEC_IDENT;

  1099.         const char *vaapi = VA_VERSION_S;

  1100.         const char *driver;

  1101.         int len;

  1102. 

  1103.         memcpy(priv->sei_identifier.uuid_iso_iec_11578,

  1104.                vaapi_encode_h264_sei_identifier_uuid,

  1105.                sizeof(priv->sei_identifier.uuid_iso_iec_11578));

  1106. 

  1107.         driver = vaQueryVendorString(ctx->hwctx->display);

  1108.         if (!driver)

  1109.             driver = "unknown driver";

  1110. 

  1111.         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);

  1112.         if (len >= 0) {

  1113.             priv->sei_identifier_string = av_malloc(len + 1);

  1114.             if (!priv->sei_identifier_string)

  1115.                 return AVERROR(ENOMEM);

  1116. 

  1117.             snprintf(priv->sei_identifier_string, len + 1,

  1118.                      "%s / VAAPI %s / %s", lavc, vaapi, driver);

  1119. 

  1120.             priv->sei_identifier.data        = priv->sei_identifier_string;

  1121.             priv->sei_identifier.data_length = len + 1;

  1122.         }

  1123.     }

  1124. 

  1125.     return 0;

  1126. }

  1127. 

  1128. static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {

  1129.     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },

  1130.     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },

  1131.     { FF_PROFILE_H264_CONSTRAINED_BASELINE,

  1132.                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },

  1133.     { FF_PROFILE_UNKNOWN }

  1134. };

  1135. 

  1136. static const VAAPIEncodeType vaapi_encode_type_h264 = {

  1137.     .profiles              = vaapi_encode_h264_profiles,

  1138. 

  1139.     .flags                 = FLAG_SLICE_CONTROL |

  1140.                              FLAG_B_PICTURES |

  1141.                              FLAG_B_PICTURE_REFERENCES |

  1142.                              FLAG_NON_IDR_KEY_PICTURES,

  1143. 

  1144.     .configure             = &vaapi_encode_h264_configure,

  1145. 

  1146.     .picture_priv_data_size = sizeof(VAAPIEncodeH264Picture),

  1147. 

  1148.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),

  1149.     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,

  1150. 

  1151.     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),

  1152.     .init_picture_params   = &vaapi_encode_h264_init_picture_params,

  1153. 

  1154.     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),

  1155.     .init_slice_params     = &vaapi_encode_h264_init_slice_params,

  1156. 

  1157.     .sequence_header_type  = VAEncPackedHeaderSequence,

  1158.     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,

  1159. 

  1160.     .slice_header_type     = VAEncPackedHeaderH264_Slice,

  1161.     .write_slice_header    = &vaapi_encode_h264_write_slice_header,

  1162. 

  1163.     .write_extra_header    = &vaapi_encode_h264_write_extra_header,

  1164. };

  1165. 

  1166. static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)

  1167. {

  1168.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1169.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1170. 

  1171.     ctx->codec = &vaapi_encode_type_h264;

  1172. 

  1173.     if (avctx->profile == FF_PROFILE_UNKNOWN)

  1174.         avctx->profile = priv->profile;

  1175.     if (avctx->level == FF_LEVEL_UNKNOWN)

  1176.         avctx->level = priv->level;

  1177.     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)

  1178.         avctx->compression_level = priv->quality;

  1179. 

  1180.     // Reject unsupported profiles.

  1181.     switch (avctx->profile) {

  1182.     case FF_PROFILE_H264_BASELINE:

  1183.         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "

  1184.                "supported, using constrained baseline profile instead.\n");

  1185.         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;

  1186.         break;

  1187.     case FF_PROFILE_H264_EXTENDED:

  1188.         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "

  1189.                "is not supported.\n");

  1190.         return AVERROR_PATCHWELCOME;

  1191.     case FF_PROFILE_H264_HIGH_10:

  1192.     case FF_PROFILE_H264_HIGH_10_INTRA:

  1193.         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "

  1194.                "are not supported.\n");

  1195.         return AVERROR_PATCHWELCOME;

  1196.     case FF_PROFILE_H264_HIGH_422:

  1197.     case FF_PROFILE_H264_HIGH_422_INTRA:

  1198.     case FF_PROFILE_H264_HIGH_444:

  1199.     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:

  1200.     case FF_PROFILE_H264_HIGH_444_INTRA:

  1201.     case FF_PROFILE_H264_CAVLC_444:

  1202.         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "

  1203.                "are not supported.\n");

  1204.         return AVERROR_PATCHWELCOME;

  1205.     }

  1206. 

  1207.     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {

  1208.         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "

  1209.                "in 8-bit unsigned integer.\n", avctx->level);

  1210.         return AVERROR(EINVAL);

  1211.     }

  1212. 

  1213.     ctx->desired_packed_headers =

  1214.         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.

  1215.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  1216.         VA_ENC_PACKED_HEADER_MISC;      // SEI.

  1217. 

  1218.     ctx->surface_width  = FFALIGN(avctx->width,  16);

  1219.     ctx->surface_height = FFALIGN(avctx->height, 16);

  1220. 

  1221.     ctx->slice_block_height = ctx->slice_block_width = 16;

  1222. 

  1223.     return ff_vaapi_encode_init(avctx);

  1224. }

  1225. 

  1226. static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)

  1227. {

  1228.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1229. 

  1230.     ff_cbs_fragment_free(priv->cbc, &priv->current_access_unit);

  1231.     ff_cbs_close(&priv->cbc);

  1232.     av_freep(&priv->sei_identifier_string);

  1233. 

  1234.     return ff_vaapi_encode_close(avctx);

  1235. }

  1236. 

  1237. #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)

  1238. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  1239. static const AVOption vaapi_encode_h264_options[] = {

  1240.     VAAPI_ENCODE_COMMON_OPTIONS,

  1241. 

  1242.     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",

  1243.       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },

  1244.     { "quality", "Set encode quality (trades off against speed, higher is faster)",

  1245.       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },

  1246.     { "coder", "Entropy coder type",

  1247.       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },

  1248.         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1249.         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1250.         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1251.         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1252. 

  1253.     { "aud", "Include AUD",

  1254.       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },

  1255. 

  1256.     { "sei", "Set SEI to include",

  1257.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

  1258.       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },

  1259.       0, INT_MAX, FLAGS, "sei" },

  1260.     { "identifier", "Include encoder version identifier",

  1261.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },

  1262.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1263.     { "timing", "Include timing parameters (buffering_period and pic_timing)",

  1264.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },

  1265.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1266.     { "recovery_point", "Include recovery points where appropriate",

  1267.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },

  1268.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1269. 

  1270.     { "profile", "Set profile (profile_idc and constraint_set*_flag)",

  1271.       OFFSET(profile), AV_OPT_TYPE_INT,

  1272.       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },

  1273. 

  1274. #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \

  1275.       { .i64 = value }, 0, 0, FLAGS, "profile"

  1276.     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },

  1277.     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },

  1278.     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },

  1279. #undef PROFILE

  1280. 

  1281.     { "level", "Set level (level_idc)",

  1282.       OFFSET(level), AV_OPT_TYPE_INT,

  1283.       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },

  1284. 

  1285. #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \

  1286.       { .i64 = value }, 0, 0, FLAGS, "level"

  1287.     { LEVEL("1",   10) },

  1288.     { LEVEL("1.1", 11) },

  1289.     { LEVEL("1.2", 12) },

  1290.     { LEVEL("1.3", 13) },

  1291.     { LEVEL("2",   20) },

  1292.     { LEVEL("2.1", 21) },

  1293.     { LEVEL("2.2", 22) },

  1294.     { LEVEL("3",   30) },

  1295.     { LEVEL("3.1", 31) },

  1296.     { LEVEL("3.2", 32) },

  1297.     { LEVEL("4",   40) },

  1298.     { LEVEL("4.1", 41) },

  1299.     { LEVEL("4.2", 42) },

  1300.     { LEVEL("5",   50) },

  1301.     { LEVEL("5.1", 51) },

  1302.     { LEVEL("5.2", 52) },

  1303.     { LEVEL("6",   60) },

  1304.     { LEVEL("6.1", 61) },

  1305.     { LEVEL("6.2", 62) },

  1306. #undef LEVEL

  1307. 

  1308.     { NULL },

  1309. };

  1310. 

  1311. static const AVCodecDefault vaapi_encode_h264_defaults[] = {

  1312.     { "b",              "0"   },

  1313.     { "bf",             "2"   },

  1314.     { "g",              "120" },

  1315.     { "i_qfactor",      "1"   },

  1316.     { "i_qoffset",      "0"   },

  1317.     { "b_qfactor",      "6/5" },

  1318.     { "b_qoffset",      "0"   },

  1319.     { "qmin",           "-1"  },

  1320.     { "qmax",           "-1"  },

  1321.     { NULL },

  1322. };

  1323. 

  1324. static const AVClass vaapi_encode_h264_class = {

  1325.     .class_name = "h264_vaapi",

  1326.     .item_name  = av_default_item_name,

  1327.     .option     = vaapi_encode_h264_options,

  1328.     .version    = LIBAVUTIL_VERSION_INT,

  1329. };

  1330. 

  1331. AVCodec ff_h264_vaapi_encoder = {

  1332.     .name           = "h264_vaapi",

  1333.     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),

  1334.     .type           = AVMEDIA_TYPE_VIDEO,

  1335.     .id             = AV_CODEC_ID_H264,

  1336.     .priv_data_size = sizeof(VAAPIEncodeH264Context),

  1337.     .init           = &vaapi_encode_h264_init,

  1338.     .send_frame     = &ff_vaapi_encode_send_frame,

  1339.     .receive_packet = &ff_vaapi_encode_receive_packet,

  1340.     .close          = &vaapi_encode_h264_close,

  1341.     .priv_class     = &vaapi_encode_h264_class,

  1342.     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,

  1343.     .defaults       = vaapi_encode_h264_defaults,

  1344.     .pix_fmts = (const enum AVPixelFormat[]) {

  1345.         AV_PIX_FMT_VAAPI,

  1346.         AV_PIX_FMT_NONE,

  1347.     },

  1348.     .wrapper_name   = "vaapi",

  1349. };