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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.     SEIRawUserDataUnregistered     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.     H264RawNALUnitHeader *header = nal_unit;

  139.     int err;

  140. 

  141.     err = ff_cbs_insert_unit_content(au, -1,

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

  143.     if (err < 0) {

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

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

  146.         return err;

  147.     }

  148. 

  149.     return 0;

  150. }

  151. 

  152. static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,

  153.                                                    char *data, size_t *data_len)

  154. {

  155.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  157.     int err;

  158. 

  159.     if (priv->aud_needed) {

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

  161.         if (err < 0)

  162.             goto fail;

  163.         priv->aud_needed = 0;

  164.     }

  165. 

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

  167.     if (err < 0)

  168.         goto fail;

  169. 

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

  171.     if (err < 0)

  172.         goto fail;

  173. 

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

  175. fail:

  176.     ff_cbs_fragment_reset(au);

  177.     return err;

  178. }

  179. 

  180. static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,

  181.                                                 VAAPIEncodePicture *pic,

  182.                                                 VAAPIEncodeSlice *slice,

  183.                                                 char *data, size_t *data_len)

  184. {

  185.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  187.     int err;

  188. 

  189.     if (priv->aud_needed) {

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

  191.         if (err < 0)

  192.             goto fail;

  193.         priv->aud_needed = 0;

  194.     }

  195. 

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

  197.     if (err < 0)

  198.         goto fail;

  199. 

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

  201. fail:

  202.     ff_cbs_fragment_reset(au);

  203.     return err;

  204. }

  205. 

  206. static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,

  207.                                                 VAAPIEncodePicture *pic,

  208.                                                 int index, int *type,

  209.                                                 char *data, size_t *data_len)

  210. {

  211.     VAAPIEncodeH264Context *priv = avctx->priv_data;

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

  213.     int err, i;

  214. 

  215.     if (priv->sei_needed) {

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

  217. 

  218.         if (priv->aud_needed) {

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

  220.             if (err < 0)

  221.                 goto fail;

  222.             priv->aud_needed = 0;

  223.         }

  224. 

  225.         *sei = (H264RawSEI) {

  226.             .nal_unit_header = {

  227.                 .nal_unit_type = H264_NAL_SEI,

  228.             },

  229.         };

  230. 

  231.         i = 0;

  232. 

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

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

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

  236.             ++i;

  237.         }

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

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

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

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

  242.                 ++i;

  243.             }

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

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

  246.             ++i;

  247.         }

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

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

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

  251.             ++i;

  252.         }

  253. 

  254.         sei->payload_count = i;

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

  256. 

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

  258.         if (err < 0)

  259.             goto fail;

  260.         priv->sei_needed = 0;

  261. 

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

  263.         if (err < 0)

  264.             goto fail;

  265. 

  266.         ff_cbs_fragment_reset(au);

  267. 

  268.         *type = VAEncPackedHeaderRawData;

  269.         return 0;

  270. 

  271. #if !CONFIG_VAAPI_1

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

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

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

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

  276.         // driver and inserted into the stream.

  277.         *data_len = 0;

  278.         *type = VAEncPackedHeaderH264_SEI;

  279.         priv->sei_cbr_workaround_needed = 0;

  280.         return 0;

  281. #endif

  282. 

  283.     } else {

  284.         return AVERROR_EOF;

  285.     }

  286. 

  287. fail:

  288.     ff_cbs_fragment_reset(au);

  289.     return err;

  290. }

  291. 

  292. static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)

  293. {

  294.     VAAPIEncodeContext                *ctx = avctx->priv_data;

  295.     VAAPIEncodeH264Context           *priv = avctx->priv_data;

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

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

  298.     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;

  299.     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;

  300. 

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

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

  303. 

  304.     sps->nal_unit_header.nal_ref_idc   = 3;

  305.     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;

  306. 

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

  308. 

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

  310.         avctx->profile == FF_PROFILE_H264_MAIN)

  311.         sps->constraint_set1_flag = 1;

  312. 

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

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

  315. 

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

  317.         avctx->profile == FF_PROFILE_H264_HIGH) {

  318.         sps->constraint_set4_flag = 1;

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

  320.     }

  321. 

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

  323.         priv->dpb_frames = 0;

  324.     else

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

  326. 

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

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

  329.     } else {

  330.         const H264LevelDescriptor *level;

  331.         int framerate;

  332. 

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

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

  335.         else

  336.             framerate = 0;

  337. 

  338.         level = ff_h264_guess_level(sps->profile_idc,

  339.                                     avctx->bit_rate,

  340.                                     framerate,

  341.                                     priv->mb_width  * 16,

  342.                                     priv->mb_height * 16,

  343.                                     priv->dpb_frames);

  344.         if (level) {

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

  346.             if (level->constraint_set3_flag)

  347.                 sps->constraint_set3_flag = 1;

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

  349.         } else {

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

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

  352.             sps->level_idc = 62;

  353.         }

  354.     }

  355. 

  356.     sps->seq_parameter_set_id = 0;

  357.     sps->chroma_format_idc    = 1;

  358. 

  359.     sps->log2_max_frame_num_minus4 = 4;

  360.     sps->pic_order_cnt_type        = 0;

  361.     sps->log2_max_pic_order_cnt_lsb_minus4 = 4;

  362. 

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

  364. 

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

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

  367. 

  368.     sps->frame_mbs_only_flag = 1;

  369.     sps->direct_8x8_inference_flag = 1;

  370. 

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

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

  373.         sps->frame_cropping_flag = 1;

  374. 

  375.         sps->frame_crop_left_offset   = 0;

  376.         sps->frame_crop_right_offset  =

  377.             (16 * priv->mb_width - avctx->width) / 2;

  378.         sps->frame_crop_top_offset    = 0;

  379.         sps->frame_crop_bottom_offset =

  380.             (16 * priv->mb_height - avctx->height) / 2;

  381.     } else {

  382.         sps->frame_cropping_flag = 0;

  383.     }

  384. 

  385.     sps->vui_parameters_present_flag = 1;

  386. 

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

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

  389.         static const AVRational sar_idc[] = {

  390.             {   0,  0 },

  391.             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },

  392.             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },

  393.             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },

  394.             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },

  395.         };

  396.         int num, den, i;

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

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

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

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

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

  402.                 sps->vui.aspect_ratio_idc = i;

  403.                 break;

  404.             }

  405.         }

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

  407.             sps->vui.aspect_ratio_idc = 255;

  408.             sps->vui.sar_width  = num;

  409.             sps->vui.sar_height = den;

  410.         }

  411.         sps->vui.aspect_ratio_info_present_flag = 1;

  412.     }

  413. 

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

  415.     sps->vui.video_format             = 5;

  416.     sps->vui.video_full_range_flag    =

  417.         avctx->color_range == AVCOL_RANGE_JPEG;

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

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

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

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

  422.         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||

  423.         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED)

  424.         sps->vui.colour_description_present_flag = 1;

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

  426.         sps->vui.colour_description_present_flag)

  427.         sps->vui.video_signal_type_present_flag = 1;

  428. 

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

  430.         sps->vui.chroma_loc_info_present_flag = 1;

  431.         sps->vui.chroma_sample_loc_type_top_field    =

  432.         sps->vui.chroma_sample_loc_type_bottom_field =

  433.             avctx->chroma_sample_location - 1;

  434.     }

  435. 

  436.     sps->vui.timing_info_present_flag = 1;

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

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

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

  440.         sps->vui.fixed_frame_rate_flag = 1;

  441.     } else {

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

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

  444.         sps->vui.fixed_frame_rate_flag = 0;

  445.     }

  446. 

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

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

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

  450. 

  451.         sps->vui.nal_hrd_parameters_present_flag = 1;

  452. 

  453.         hrd->cpb_cnt_minus1 = 0;

  454. 

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

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

  457.         hrd->bit_rate_scale =

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

  459.         hrd->bit_rate_value_minus1[0] =

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

  461. 

  462.         hrd->cpb_size_scale =

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

  464.         hrd->cpb_size_value_minus1[0] =

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

  466. 

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

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

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

  470. 

  471.         hrd->initial_cpb_removal_delay_length_minus1 = 23;

  472.         hrd->cpb_removal_delay_length_minus1         = 23;

  473.         hrd->dpb_output_delay_length_minus1          = 7;

  474.         hrd->time_offset_length                      = 0;

  475. 

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

  477. 

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

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

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

  481.             ctx->hrd_params.buffer_size;

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

  483.     } else {

  484.         sps->vui.nal_hrd_parameters_present_flag = 0;

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

  486.     }

  487. 

  488.     sps->vui.bitstream_restriction_flag    = 1;

  489.     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;

  490.     sps->vui.log2_max_mv_length_horizontal = 15;

  491.     sps->vui.log2_max_mv_length_vertical   = 15;

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

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

  494. 

  495.     pps->nal_unit_header.nal_ref_idc = 3;

  496.     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;

  497. 

  498.     pps->pic_parameter_set_id = 0;

  499.     pps->seq_parameter_set_id = 0;

  500. 

  501.     pps->entropy_coding_mode_flag =

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

  503.           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  504.           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);

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

  506.         pps->entropy_coding_mode_flag = 0;

  507. 

  508.     pps->num_ref_idx_l0_default_active_minus1 = 0;

  509.     pps->num_ref_idx_l1_default_active_minus1 = 0;

  510. 

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

  512. 

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

  514.         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||

  515.         sps->profile_idc == FF_PROFILE_H264_MAIN) {

  516.         pps->more_rbsp_data = 0;

  517.     } else {

  518.         pps->more_rbsp_data = 1;

  519. 

  520.         pps->transform_8x8_mode_flag = 1;

  521.     }

  522. 

  523.     *vseq = (VAEncSequenceParameterBufferH264) {

  524.         .seq_parameter_set_id = sps->seq_parameter_set_id,

  525.         .level_idc        = sps->level_idc,

  526.         .intra_period     = ctx->gop_size,

  527.         .intra_idr_period = ctx->gop_size,

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

  529. 

  530.         .bits_per_second       = ctx->va_bit_rate,

  531.         .max_num_ref_frames    = sps->max_num_ref_frames,

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

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

  534. 

  535.         .seq_fields.bits = {

  536.             .chroma_format_idc                 = sps->chroma_format_idc,

  537.             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,

  538.             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,

  539.             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,

  540.             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,

  541.             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,

  542.             .pic_order_cnt_type                = sps->pic_order_cnt_type,

  543.             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,

  544.             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,

  545.         },

  546. 

  547.         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,

  548.         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,

  549. 

  550.         .frame_cropping_flag      = sps->frame_cropping_flag,

  551.         .frame_crop_left_offset   = sps->frame_crop_left_offset,

  552.         .frame_crop_right_offset  = sps->frame_crop_right_offset,

  553.         .frame_crop_top_offset    = sps->frame_crop_top_offset,

  554.         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,

  555. 

  556.         .vui_parameters_present_flag = sps->vui_parameters_present_flag,

  557. 

  558.         .vui_fields.bits = {

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

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

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

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

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

  564.         },

  565. 

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

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

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

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

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

  571.     };

  572. 

  573.     *vpic = (VAEncPictureParameterBufferH264) {

  574.         .CurrPic = {

  575.             .picture_id = VA_INVALID_ID,

  576.             .flags      = VA_PICTURE_H264_INVALID,

  577.         },

  578. 

  579.         .coded_buf = VA_INVALID_ID,

  580. 

  581.         .pic_parameter_set_id = pps->pic_parameter_set_id,

  582.         .seq_parameter_set_id = pps->seq_parameter_set_id,

  583. 

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

  585.         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,

  586.         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,

  587. 

  588.         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,

  589.         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,

  590. 

  591.         .pic_fields.bits = {

  592.             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,

  593.             .weighted_pred_flag              = pps->weighted_pred_flag,

  594.             .weighted_bipred_idc             = pps->weighted_bipred_idc,

  595.             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,

  596.             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,

  597.             .deblocking_filter_control_present_flag =

  598.                 pps->deblocking_filter_control_present_flag,

  599.             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,

  600.             .pic_order_present_flag          =

  601.                 pps->bottom_field_pic_order_in_frame_present_flag,

  602.             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,

  603.         },

  604.     };

  605. 

  606.     return 0;

  607. }

  608. 

  609. static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,

  610.                                                  VAAPIEncodePicture *pic)

  611. {

  612.     VAAPIEncodeContext               *ctx = avctx->priv_data;

  613.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

  614.     VAAPIEncodeH264Picture          *hpic = pic->priv_data;

  615.     VAAPIEncodePicture              *prev = pic->prev;

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

  617.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  618.     int i;

  619. 

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

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

  622. 

  623.         hpic->frame_num      = 0;

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

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

  626. 

  627.         hpic->primary_pic_type = 0;

  628.         hpic->slice_type       = 7;

  629.     } else {

  630.         av_assert0(prev);

  631. 

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

  633. 

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

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

  636. 

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

  638.             hpic->slice_type       = 7;

  639.             hpic->primary_pic_type = 0;

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

  641.             hpic->slice_type       = 5;

  642.             hpic->primary_pic_type = 1;

  643.         } else {

  644.             hpic->slice_type       = 6;

  645.             hpic->primary_pic_type = 2;

  646.         }

  647.     }

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

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

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

  651. 

  652.     if (priv->aud) {

  653.         priv->aud_needed = 1;

  654.         priv->raw_aud = (H264RawAUD) {

  655.             .nal_unit_header = {

  656.                 .nal_unit_type = H264_NAL_AUD,

  657.             },

  658.             .primary_pic_type  = hpic->primary_pic_type,

  659.         };

  660.     } else {

  661.         priv->aud_needed = 0;

  662.     }

  663. 

  664.     priv->sei_needed = 0;

  665. 

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

  667.         priv->sei_needed |= SEI_IDENTIFIER;

  668. #if !CONFIG_VAAPI_1

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

  670.         priv->sei_cbr_workaround_needed = 1;

  671. #endif

  672. 

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

  674.         priv->sei_pic_timing = (H264RawSEIPicTiming) {

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

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

  677.         };

  678. 

  679.         priv->sei_needed |= SEI_TIMING;

  680.     }

  681. 

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

  683.         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {

  684.             .recovery_frame_cnt = 0,

  685.             .exact_match_flag   = 1,

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

  687.         };

  688. 

  689.         priv->sei_needed |= SEI_RECOVERY_POINT;

  690.     }

  691. 

  692.     vpic->CurrPic = (VAPictureH264) {

  693.         .picture_id          = pic->recon_surface,

  694.         .frame_idx           = hpic->frame_num,

  695.         .flags               = 0,

  696.         .TopFieldOrderCnt    = hpic->pic_order_cnt,

  697.         .BottomFieldOrderCnt = hpic->pic_order_cnt,

  698.     };

  699. 

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

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

  702.         VAAPIEncodeH264Picture *href;

  703. 

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

  705.         href = ref->priv_data;

  706. 

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

  708.             .picture_id          = ref->recon_surface,

  709.             .frame_idx           = href->frame_num,

  710.             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,

  711.             .TopFieldOrderCnt    = href->pic_order_cnt,

  712.             .BottomFieldOrderCnt = href->pic_order_cnt,

  713.         };

  714.     }

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

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

  717.             .picture_id = VA_INVALID_ID,

  718.             .flags      = VA_PICTURE_H264_INVALID,

  719.         };

  720.     }

  721. 

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

  723. 

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

  725. 

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

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

  728. 

  729.     return 0;

  730. }

  731. 

  732. static void vaapi_encode_h264_default_ref_pic_list(AVCodecContext *avctx,

  733.                                                    VAAPIEncodePicture *pic,

  734.                                                    VAAPIEncodePicture **rpl0,

  735.                                                    VAAPIEncodePicture **rpl1,

  736.                                                    int *rpl_size)

  737. {

  738.     VAAPIEncodePicture *prev;

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

  740.     int i, j, n = 0;

  741. 

  742.     prev = pic->prev;

  743.     av_assert0(prev);

  744.     hp = pic->priv_data;

  745. 

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

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

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

  749. 

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

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

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

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

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

  755.                     break;

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

  757.             }

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

  759. 

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

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

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

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

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

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

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

  767.                         break;

  768.                 } else {

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

  770.                         break;

  771.                 }

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

  773.             }

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

  775. 

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

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

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

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

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

  781.                         hn->pic_order_cnt > hc->pic_order_cnt)

  782.                         break;

  783.                 } else {

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

  785.                         break;

  786.                 }

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

  788.             }

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

  790.         }

  791. 

  792.         ++n;

  793.     }

  794. 

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

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

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

  798.                 break;

  799.         }

  800.         if (i == n)

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

  802.     }

  803. 

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

  805.         pic->type == PICTURE_TYPE_B) {

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

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

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

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

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

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

  812.         }

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

  814.     }

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

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

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

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

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

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

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

  822.         }

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

  824.     }

  825. 

  826.     *rpl_size = n;

  827. }

  828. 

  829. static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,

  830.                                                VAAPIEncodePicture *pic,

  831.                                                VAAPIEncodeSlice *slice)

  832. {

  833.     VAAPIEncodeH264Context          *priv = avctx->priv_data;

  834.     VAAPIEncodeH264Picture          *hpic = pic->priv_data;

  835.     VAAPIEncodePicture              *prev = pic->prev;

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

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

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

  839.     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;

  840.     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;

  841.     int i, j;

  842. 

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

  844.         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;

  845.         sh->nal_unit_header.nal_ref_idc   = 3;

  846.     } else {

  847.         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;

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

  849.     }

  850. 

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

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

  853. 

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

  855. 

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

  857.         ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);

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

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

  860.         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);

  861. 

  862.     sh->direct_spatial_mv_pred_flag = 1;

  863. 

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

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

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

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

  868.     else

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

  870. 

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

  872.         VAAPIEncodePicture *discard_list[MAX_DPB_SIZE];

  873.         int discard = 0, keep = 0;

  874. 

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

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

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

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

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

  880.                     break;

  881.             }

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

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

  884.                 ++discard;

  885.             } else {

  886.                 ++keep;

  887.             }

  888.         }

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

  890. 

  891.         if (discard == 0) {

  892.             sh->adaptive_ref_pic_marking_mode_flag = 0;

  893.         } else {

  894.             sh->adaptive_ref_pic_marking_mode_flag = 1;

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

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

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

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

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

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

  901.             }

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

  903.         }

  904.     }

  905. 

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

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

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

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

  910.         VAAPIEncodeH264Picture *href;

  911.         int n;

  912. 

  913.         vaapi_encode_h264_default_ref_pic_list(avctx, pic,

  914.                                                def_l0, def_l1, &n);

  915. 

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

  917.             int need_rplm = 0;

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

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

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

  921.                     need_rplm = 1;

  922.             }

  923. 

  924.             sh->ref_pic_list_modification_flag_l0 = need_rplm;

  925.             if (need_rplm) {

  926.                 int pic_num = hpic->frame_num;

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

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

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

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

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

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

  933.                             pic_num - href->frame_num - 1;

  934.                     } else {

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

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

  937.                             href->frame_num - pic_num - 1;

  938.                     }

  939.                     pic_num = href->frame_num;

  940.                 }

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

  942.             }

  943. 

  944.         } else {

  945.             int need_rplm_l0 = 0, need_rplm_l1 = 0;

  946.             int n0 = 0, n1 = 0;

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

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

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

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

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

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

  953.                         need_rplm_l0 = 1;

  954.                     ++n0;

  955.                 } else {

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

  957.                         need_rplm_l1 = 1;

  958.                     ++n1;

  959.                 }

  960.             }

  961. 

  962.             sh->ref_pic_list_modification_flag_l0 = need_rplm_l0;

  963.             if (need_rplm_l0) {

  964.                 int pic_num = hpic->frame_num;

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

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

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

  968.                         continue;

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

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

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

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

  973.                             pic_num - href->frame_num - 1;

  974.                     } else {

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

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

  977.                             href->frame_num - pic_num - 1;

  978.                     }

  979.                     pic_num = href->frame_num;

  980.                     ++j;

  981.                 }

  982.                 av_assert0(j == n0);

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

  984.             }

  985. 

  986.             sh->ref_pic_list_modification_flag_l1 = need_rplm_l1;

  987.             if (need_rplm_l1) {

  988.                 int pic_num = hpic->frame_num;

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

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

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

  992.                         continue;

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

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

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

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

  997.                             pic_num - href->frame_num - 1;

  998.                     } else {

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

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

  1001.                             href->frame_num - pic_num - 1;

  1002.                     }

  1003.                     pic_num = href->frame_num;

  1004.                     ++j;

  1005.                 }

  1006.                 av_assert0(j == n1);

  1007.                 sh->rplm_l1[j].modification_of_pic_nums_idc = 3;

  1008.             }

  1009.         }

  1010.     }

  1011. 

  1012.     vslice->macroblock_address = slice->block_start;

  1013.     vslice->num_macroblocks    = slice->block_size;

  1014. 

  1015.     vslice->macroblock_info = VA_INVALID_ID;

  1016. 

  1017.     vslice->slice_type           = sh->slice_type % 5;

  1018.     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;

  1019.     vslice->idr_pic_id           = sh->idr_pic_id;

  1020. 

  1021.     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;

  1022. 

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

  1024. 

  1025.     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {

  1026.         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;

  1027.         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;

  1028.         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;

  1029.         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;

  1030.     }

  1031. 

  1032.     av_assert0(pic->nb_refs <= 2);

  1033.     if (pic->nb_refs >= 1) {

  1034.         // Backward reference for P- or B-frame.

  1035.         av_assert0(pic->type == PICTURE_TYPE_P ||

  1036.                    pic->type == PICTURE_TYPE_B);

  1037.         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];

  1038.     }

  1039.     if (pic->nb_refs >= 2) {

  1040.         // Forward reference for B-frame.

  1041.         av_assert0(pic->type == PICTURE_TYPE_B);

  1042.         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];

  1043.     }

  1044. 

  1045.     vslice->slice_qp_delta = sh->slice_qp_delta;

  1046. 

  1047.     return 0;

  1048. }

  1049. 

  1050. static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)

  1051. {

  1052.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1053.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1054.     int err;

  1055. 

  1056.     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);

  1057.     if (err < 0)

  1058.         return err;

  1059. 

  1060.     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;

  1061.     priv->mb_height = FFALIGN(avctx->height, 16) / 16;

  1062. 

  1063.     if (ctx->va_rc_mode == VA_RC_CQP) {

  1064.         priv->fixed_qp_p = av_clip(ctx->rc_quality, 1, 51);

  1065.         if (avctx->i_quant_factor > 0.0)

  1066.             priv->fixed_qp_idr =

  1067.                 av_clip((avctx->i_quant_factor * priv->fixed_qp_p +

  1068.                          avctx->i_quant_offset) + 0.5, 1, 51);

  1069.         else

  1070.             priv->fixed_qp_idr = priv->fixed_qp_p;

  1071.         if (avctx->b_quant_factor > 0.0)

  1072.             priv->fixed_qp_b =

  1073.                 av_clip((avctx->b_quant_factor * priv->fixed_qp_p +

  1074.                          avctx->b_quant_offset) + 0.5, 1, 51);

  1075.         else

  1076.             priv->fixed_qp_b = priv->fixed_qp_p;

  1077. 

  1078.         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "

  1079.                "%d / %d / %d for IDR- / P- / B-frames.\n",

  1080.                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);

  1081. 

  1082.     } else {

  1083.         // These still need to be  set for pic_init_qp/slice_qp_delta.

  1084.         priv->fixed_qp_idr = 26;

  1085.         priv->fixed_qp_p   = 26;

  1086.         priv->fixed_qp_b   = 26;

  1087.     }

  1088. 

  1089.     if (!ctx->rc_mode->hrd) {

  1090.         // Timing SEI requires a mode respecting HRD parameters.

  1091.         priv->sei &= ~SEI_TIMING;

  1092.     }

  1093. 

  1094.     if (priv->sei & SEI_IDENTIFIER) {

  1095.         const char *lavc  = LIBAVCODEC_IDENT;

  1096.         const char *vaapi = VA_VERSION_S;

  1097.         const char *driver;

  1098.         int len;

  1099. 

  1100.         memcpy(priv->sei_identifier.uuid_iso_iec_11578,

  1101.                vaapi_encode_h264_sei_identifier_uuid,

  1102.                sizeof(priv->sei_identifier.uuid_iso_iec_11578));

  1103. 

  1104.         driver = vaQueryVendorString(ctx->hwctx->display);

  1105.         if (!driver)

  1106.             driver = "unknown driver";

  1107. 

  1108.         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);

  1109.         if (len >= 0) {

  1110.             priv->sei_identifier_string = av_malloc(len + 1);

  1111.             if (!priv->sei_identifier_string)

  1112.                 return AVERROR(ENOMEM);

  1113. 

  1114.             snprintf(priv->sei_identifier_string, len + 1,

  1115.                      "%s / VAAPI %s / %s", lavc, vaapi, driver);

  1116. 

  1117.             priv->sei_identifier.data        = priv->sei_identifier_string;

  1118.             priv->sei_identifier.data_length = len + 1;

  1119.         }

  1120.     }

  1121. 

  1122.     ctx->roi_quant_range = 51 + 6 * (ctx->profile->depth - 8);

  1123. 

  1124.     return 0;

  1125. }

  1126. 

  1127. static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {

  1128.     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },

  1129.     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },

  1130.     { FF_PROFILE_H264_CONSTRAINED_BASELINE,

  1131.                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },

  1132.     { FF_PROFILE_UNKNOWN }

  1133. };

  1134. 

  1135. static const VAAPIEncodeType vaapi_encode_type_h264 = {

  1136.     .profiles              = vaapi_encode_h264_profiles,

  1137. 

  1138.     .flags                 = FLAG_SLICE_CONTROL |

  1139.                              FLAG_B_PICTURES |

  1140.                              FLAG_B_PICTURE_REFERENCES |

  1141.                              FLAG_NON_IDR_KEY_PICTURES,

  1142. 

  1143.     .default_quality       = 20,

  1144. 

  1145.     .configure             = &vaapi_encode_h264_configure,

  1146. 

  1147.     .picture_priv_data_size = sizeof(VAAPIEncodeH264Picture),

  1148. 

  1149.     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),

  1150.     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,

  1151. 

  1152.     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),

  1153.     .init_picture_params   = &vaapi_encode_h264_init_picture_params,

  1154. 

  1155.     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),

  1156.     .init_slice_params     = &vaapi_encode_h264_init_slice_params,

  1157. 

  1158.     .sequence_header_type  = VAEncPackedHeaderSequence,

  1159.     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,

  1160. 

  1161.     .slice_header_type     = VAEncPackedHeaderH264_Slice,

  1162.     .write_slice_header    = &vaapi_encode_h264_write_slice_header,

  1163. 

  1164.     .write_extra_header    = &vaapi_encode_h264_write_extra_header,

  1165. };

  1166. 

  1167. static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)

  1168. {

  1169.     VAAPIEncodeContext      *ctx = avctx->priv_data;

  1170.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1171. 

  1172.     ctx->codec = &vaapi_encode_type_h264;

  1173. 

  1174.     if (avctx->profile == FF_PROFILE_UNKNOWN)

  1175.         avctx->profile = priv->profile;

  1176.     if (avctx->level == FF_LEVEL_UNKNOWN)

  1177.         avctx->level = priv->level;

  1178.     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)

  1179.         avctx->compression_level = priv->quality;

  1180. 

  1181.     // Reject unsupported profiles.

  1182.     switch (avctx->profile) {

  1183.     case FF_PROFILE_H264_BASELINE:

  1184.         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "

  1185.                "supported, using constrained baseline profile instead.\n");

  1186.         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;

  1187.         break;

  1188.     case FF_PROFILE_H264_EXTENDED:

  1189.         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "

  1190.                "is not supported.\n");

  1191.         return AVERROR_PATCHWELCOME;

  1192.     case FF_PROFILE_H264_HIGH_10:

  1193.     case FF_PROFILE_H264_HIGH_10_INTRA:

  1194.         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "

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

  1196.         return AVERROR_PATCHWELCOME;

  1197.     case FF_PROFILE_H264_HIGH_422:

  1198.     case FF_PROFILE_H264_HIGH_422_INTRA:

  1199.     case FF_PROFILE_H264_HIGH_444:

  1200.     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:

  1201.     case FF_PROFILE_H264_HIGH_444_INTRA:

  1202.     case FF_PROFILE_H264_CAVLC_444:

  1203.         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "

  1204.                "are not supported.\n");

  1205.         return AVERROR_PATCHWELCOME;

  1206.     }

  1207. 

  1208.     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {

  1209.         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "

  1210.                "in 8-bit unsigned integer.\n", avctx->level);

  1211.         return AVERROR(EINVAL);

  1212.     }

  1213. 

  1214.     ctx->desired_packed_headers =

  1215.         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.

  1216.         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.

  1217.         VA_ENC_PACKED_HEADER_MISC;      // SEI.

  1218. 

  1219.     ctx->surface_width  = FFALIGN(avctx->width,  16);

  1220.     ctx->surface_height = FFALIGN(avctx->height, 16);

  1221. 

  1222.     ctx->slice_block_height = ctx->slice_block_width = 16;

  1223. 

  1224.     if (priv->qp > 0)

  1225.         ctx->explicit_qp = priv->qp;

  1226. 

  1227.     return ff_vaapi_encode_init(avctx);

  1228. }

  1229. 

  1230. static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)

  1231. {

  1232.     VAAPIEncodeH264Context *priv = avctx->priv_data;

  1233. 

  1234.     ff_cbs_fragment_free(&priv->current_access_unit);

  1235.     ff_cbs_close(&priv->cbc);

  1236.     av_freep(&priv->sei_identifier_string);

  1237. 

  1238.     return ff_vaapi_encode_close(avctx);

  1239. }

  1240. 

  1241. #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)

  1242. #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)

  1243. static const AVOption vaapi_encode_h264_options[] = {

  1244.     VAAPI_ENCODE_COMMON_OPTIONS,

  1245.     VAAPI_ENCODE_RC_OPTIONS,

  1246. 

  1247.     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",

  1248.       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },

  1249.     { "quality", "Set encode quality (trades off against speed, higher is faster)",

  1250.       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },

  1251.     { "coder", "Entropy coder type",

  1252.       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },

  1253.         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1254.         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1255.         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1256.         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },

  1257. 

  1258.     { "aud", "Include AUD",

  1259.       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },

  1260. 

  1261.     { "sei", "Set SEI to include",

  1262.       OFFSET(sei), AV_OPT_TYPE_FLAGS,

  1263.       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },

  1264.       0, INT_MAX, FLAGS, "sei" },

  1265.     { "identifier", "Include encoder version identifier",

  1266.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },

  1267.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1268.     { "timing", "Include timing parameters (buffering_period and pic_timing)",

  1269.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },

  1270.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1271.     { "recovery_point", "Include recovery points where appropriate",

  1272.       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },

  1273.       INT_MIN, INT_MAX, FLAGS, "sei" },

  1274. 

  1275.     { "profile", "Set profile (profile_idc and constraint_set*_flag)",

  1276.       OFFSET(profile), AV_OPT_TYPE_INT,

  1277.       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },

  1278. 

  1279. #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \

  1280.       { .i64 = value }, 0, 0, FLAGS, "profile"

  1281.     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },

  1282.     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },

  1283.     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },

  1284. #undef PROFILE

  1285. 

  1286.     { "level", "Set level (level_idc)",

  1287.       OFFSET(level), AV_OPT_TYPE_INT,

  1288.       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },

  1289. 

  1290. #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \

  1291.       { .i64 = value }, 0, 0, FLAGS, "level"

  1292.     { LEVEL("1",   10) },

  1293.     { LEVEL("1.1", 11) },

  1294.     { LEVEL("1.2", 12) },

  1295.     { LEVEL("1.3", 13) },

  1296.     { LEVEL("2",   20) },

  1297.     { LEVEL("2.1", 21) },

  1298.     { LEVEL("2.2", 22) },

  1299.     { LEVEL("3",   30) },

  1300.     { LEVEL("3.1", 31) },

  1301.     { LEVEL("3.2", 32) },

  1302.     { LEVEL("4",   40) },

  1303.     { LEVEL("4.1", 41) },

  1304.     { LEVEL("4.2", 42) },

  1305.     { LEVEL("5",   50) },

  1306.     { LEVEL("5.1", 51) },

  1307.     { LEVEL("5.2", 52) },

  1308.     { LEVEL("6",   60) },

  1309.     { LEVEL("6.1", 61) },

  1310.     { LEVEL("6.2", 62) },

  1311. #undef LEVEL

  1312. 

  1313.     { NULL },

  1314. };

  1315. 

  1316. static const AVCodecDefault vaapi_encode_h264_defaults[] = {

  1317.     { "b",              "0"   },

  1318.     { "bf",             "2"   },

  1319.     { "g",              "120" },

  1320.     { "i_qfactor",      "1"   },

  1321.     { "i_qoffset",      "0"   },

  1322.     { "b_qfactor",      "6/5" },

  1323.     { "b_qoffset",      "0"   },

  1324.     { "qmin",           "-1"  },

  1325.     { "qmax",           "-1"  },

  1326.     { NULL },

  1327. };

  1328. 

  1329. static const AVClass vaapi_encode_h264_class = {

  1330.     .class_name = "h264_vaapi",

  1331.     .item_name  = av_default_item_name,

  1332.     .option     = vaapi_encode_h264_options,

  1333.     .version    = LIBAVUTIL_VERSION_INT,

  1334. };

  1335. 

  1336. AVCodec ff_h264_vaapi_encoder = {

  1337.     .name           = "h264_vaapi",

  1338.     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),

  1339.     .type           = AVMEDIA_TYPE_VIDEO,

  1340.     .id             = AV_CODEC_ID_H264,

  1341.     .priv_data_size = sizeof(VAAPIEncodeH264Context),

  1342.     .init           = &vaapi_encode_h264_init,

  1343.     .receive_packet = &ff_vaapi_encode_receive_packet,

  1344.     .close          = &vaapi_encode_h264_close,

  1345.     .priv_class     = &vaapi_encode_h264_class,

  1346.     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,

  1347.     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,

  1348.     .defaults       = vaapi_encode_h264_defaults,

  1349.     .pix_fmts = (const enum AVPixelFormat[]) {

  1350.         AV_PIX_FMT_VAAPI,

  1351.         AV_PIX_FMT_NONE,

  1352.     },

  1353.     .hw_configs     = ff_vaapi_encode_hw_configs,

  1354.     .wrapper_name   = "vaapi",

  1355. };