git.sesse.net Git - nageru/blob - nageru/quicksync_encoder.cpp

   1 #include "quicksync_encoder.h"
   2
   3 #include <atomic>
   4 #include <errno.h>
   5 #include <epoxy/egl.h>
   6 #include <epoxy/gl.h>
   7 #include <movit/image_format.h>
   8 #include <movit/resource_pool.h>  // Must be above the Xlib includes.
   9 #include <movit/util.h>
  10
  11 #include <EGL/eglplatform.h>
  12 #include <assert.h>
  13 #include <epoxy/egl.h>
  14 #include <glob.h>
  15 #include <pthread.h>
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <va/va.h>
  20 #include <va/va_drmcommon.h>
  21 #include <va/va_enc_h264.h>
  22 #include <algorithm>
  23 #include <chrono>
  24 #include <condition_variable>
  25 #include <cstddef>
  26 #include <cstdint>
  27 #include <functional>
  28 #include <map>
  29 #include <memory>
  30 #include <mutex>
  31 #include <queue>
  32 #include <string>
  33 #include <thread>
  34 #include <utility>
  35 #include <vector>
  36
  37 extern "C" {
  38
  39 #include <drm_fourcc.h>
  40 #include <libavcodec/packet.h>
  41 #include <libavformat/avformat.h>
  42 #include <libavformat/avio.h>
  43 #include <libavutil/error.h>
  44
  45 }  // namespace
  46
  47 #include "audio_encoder.h"
  48 #include "defs.h"
  49 #include "flags.h"
  50 #include "print_latency.h"
  51 #include "quicksync_encoder_impl.h"
  52 #include "ref_counted_frame.h"
  53 #include "shared/context.h"
  54 #include "shared/disk_space_estimator.h"
  55 #include "shared/ffmpeg_raii.h"
  56 #include "shared/metrics.h"
  57 #include "shared/mux.h"
  58 #include "shared/ref_counted_gl_sync.h"
  59 #include "shared/timebase.h"
  60 #include "shared/va_display.h"
  61 #include "v4l_output.h"
  62 #include "x264_encoder.h"
  63
  64 using namespace movit;
  65 using namespace std;
  66 using namespace std::chrono;
  67 using namespace std::placeholders;
  68
  69 class QOpenGLContext;
  70 class QSurface;
  71
  72 namespace {
  73
  74 // These need to survive several QuickSyncEncoderImpl instances,
  75 // so they are outside.
  76 once_flag quick_sync_metrics_inited;
  77 LatencyHistogram mixer_latency_histogram, qs_latency_histogram;
  78 MuxMetrics current_file_mux_metrics, total_mux_metrics;
  79 std::atomic<double> metric_current_file_start_time_seconds{0.0 / 0.0};
  80 std::atomic<int64_t> metric_quick_sync_stalled_frames{0};
  81
  82 }  // namespace
  83
  84 #define CHECK_VASTATUS(va_status, func)                                 \
  85     if (va_status != VA_STATUS_SUCCESS) {                               \
  86         fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
  87         abort();                                                        \
  88     }
  89
  90 #undef BUFFER_OFFSET
  91 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
  92
  93 //#include "loadsurface.h"
  94
  95 #define NAL_REF_IDC_NONE        0
  96 #define NAL_REF_IDC_LOW         1
  97 #define NAL_REF_IDC_MEDIUM      2
  98 #define NAL_REF_IDC_HIGH        3
  99
 100 #define NAL_NON_IDR             1
 101 #define NAL_IDR                 5
 102 #define NAL_SPS                 7
 103 #define NAL_PPS                 8
 104 #define NAL_SEI                 6
 105
 106 #define SLICE_TYPE_P            0
 107 #define SLICE_TYPE_B            1
 108 #define SLICE_TYPE_I            2
 109 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
 110 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
 111 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
 112
 113
 114 #define ENTROPY_MODE_CAVLC      0
 115 #define ENTROPY_MODE_CABAC      1
 116
 117 #define PROFILE_IDC_BASELINE    66
 118 #define PROFILE_IDC_MAIN        77
 119 #define PROFILE_IDC_HIGH        100
 120
 121 #define BITSTREAM_ALLOCATE_STEPPING     4096
 122
 123 static constexpr unsigned int MaxFrameNum = (2<<16);
 124 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
 125 static constexpr unsigned int Log2MaxFrameNum = 16;
 126 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
 127
 128 using namespace std;
 129
 130 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
 131 // but if we don't delete it here, we get leaks. The GStreamer implementation
 132 // does the same.
 133 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
 134 {
 135     VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
 136     CHECK_VASTATUS(va_status, "vaRenderPicture");
 137
 138     for (int i = 0; i < num_buffers; ++i) {
 139         va_status = vaDestroyBuffer(dpy, buffers[i]);
 140         CHECK_VASTATUS(va_status, "vaDestroyBuffer");
 141     }
 142 }
 143
 144 static unsigned int
 145 va_swap32(unsigned int val)
 146 {
 147     unsigned char *pval = (unsigned char *)&val;
 148
 149     return ((pval[0] << 24)     |
 150             (pval[1] << 16)     |
 151             (pval[2] << 8)      |
 152             (pval[3] << 0));
 153 }
 154
 155 static void
 156 bitstream_start(bitstream *bs)
 157 {
 158     bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
 159     bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
 160     bs->bit_offset = 0;
 161 }
 162
 163 static void
 164 bitstream_end(bitstream *bs)
 165 {
 166     int pos = (bs->bit_offset >> 5);
 167     int bit_offset = (bs->bit_offset & 0x1f);
 168     int bit_left = 32 - bit_offset;
 169
 170     if (bit_offset) {
 171         bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
 172     }
 173 }
 174
 175 static void
 176 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
 177 {
 178     int pos = (bs->bit_offset >> 5);
 179     int bit_offset = (bs->bit_offset & 0x1f);
 180     int bit_left = 32 - bit_offset;
 181
 182     if (!size_in_bits)
 183         return;
 184
 185     bs->bit_offset += size_in_bits;
 186
 187     if (bit_left > size_in_bits) {
 188         bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
 189     } else {
 190         size_in_bits -= bit_left;
 191         if (bit_left >= 32) {
 192             bs->buffer[pos] = (val >> size_in_bits);
 193         } else {
 194             bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
 195         }
 196         bs->buffer[pos] = va_swap32(bs->buffer[pos]);
 197
 198         if (pos + 1 == bs->max_size_in_dword) {
 199             bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
 200             bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
 201         }
 202
 203         bs->buffer[pos + 1] = val;
 204     }
 205 }
 206
 207 static void
 208 bitstream_put_ue(bitstream *bs, unsigned int val)
 209 {
 210     int size_in_bits = 0;
 211     int tmp_val = ++val;
 212
 213     while (tmp_val) {
 214         tmp_val >>= 1;
 215         size_in_bits++;
 216     }
 217
 218     bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
 219     bitstream_put_ui(bs, val, size_in_bits);
 220 }
 221
 222 static void
 223 bitstream_put_se(bitstream *bs, int val)
 224 {
 225     unsigned int new_val;
 226
 227     if (val <= 0)
 228         new_val = -2 * val;
 229     else
 230         new_val = 2 * val - 1;
 231
 232     bitstream_put_ue(bs, new_val);
 233 }
 234
 235 static void
 236 bitstream_byte_aligning(bitstream *bs, int bit)
 237 {
 238     int bit_offset = (bs->bit_offset & 0x7);
 239     int bit_left = 8 - bit_offset;
 240     int new_val;
 241
 242     if (!bit_offset)
 243         return;
 244
 245     assert(bit == 0 || bit == 1);
 246
 247     if (bit)
 248         new_val = (1 << bit_left) - 1;
 249     else
 250         new_val = 0;
 251
 252     bitstream_put_ui(bs, new_val, bit_left);
 253 }
 254
 255 static void
 256 rbsp_trailing_bits(bitstream *bs)
 257 {
 258     bitstream_put_ui(bs, 1, 1);
 259     bitstream_byte_aligning(bs, 0);
 260 }
 261
 262 static void nal_start_code_prefix(bitstream *bs)
 263 {
 264     bitstream_put_ui(bs, 0x00000001, 32);
 265 }
 266
 267 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
 268 {
 269     bitstream_put_ui(bs, 0, 1);                /* forbidden_zero_bit: 0 */
 270     bitstream_put_ui(bs, nal_ref_idc, 2);
 271     bitstream_put_ui(bs, nal_unit_type, 5);
 272 }
 273
 274 void QuickSyncEncoderImpl::sps_rbsp(YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs)
 275 {
 276     int profile_idc = PROFILE_IDC_BASELINE;
 277
 278     if (h264_profile  == VAProfileH264High)
 279         profile_idc = PROFILE_IDC_HIGH;
 280     else if (h264_profile  == VAProfileH264Main)
 281         profile_idc = PROFILE_IDC_MAIN;
 282
 283     bitstream_put_ui(bs, profile_idc, 8);               /* profile_idc */
 284     bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1);                         /* constraint_set0_flag */
 285     bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1);                         /* constraint_set1_flag */
 286     bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1);                         /* constraint_set2_flag */
 287     bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1);                         /* constraint_set3_flag */
 288     bitstream_put_ui(bs, 0, 4);                         /* reserved_zero_4bits */
 289     bitstream_put_ui(bs, seq_param.level_idc, 8);      /* level_idc */
 290     bitstream_put_ue(bs, seq_param.seq_parameter_set_id);      /* seq_parameter_set_id */
 291
 292     if ( profile_idc == PROFILE_IDC_HIGH) {
 293         bitstream_put_ue(bs, 1);        /* chroma_format_idc = 1, 4:2:0 */
 294         bitstream_put_ue(bs, 0);        /* bit_depth_luma_minus8 */
 295         bitstream_put_ue(bs, 0);        /* bit_depth_chroma_minus8 */
 296         bitstream_put_ui(bs, 0, 1);     /* qpprime_y_zero_transform_bypass_flag */
 297         bitstream_put_ui(bs, 0, 1);     /* seq_scaling_matrix_present_flag */
 298     }
 299
 300     bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
 301     bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type);        /* pic_order_cnt_type */
 302
 303     if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
 304         bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4);     /* log2_max_pic_order_cnt_lsb_minus4 */
 305     else {
 306         assert(0);
 307     }
 308
 309     bitstream_put_ue(bs, seq_param.max_num_ref_frames);        /* num_ref_frames */
 310     bitstream_put_ui(bs, 0, 1);                                 /* gaps_in_frame_num_value_allowed_flag */
 311
 312     bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1);  /* pic_width_in_mbs_minus1 */
 313     bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
 314     bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1);    /* frame_mbs_only_flag */
 315
 316     if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
 317         assert(0);
 318     }
 319
 320     bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1);      /* direct_8x8_inference_flag */
 321     bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1);            /* frame_cropping_flag */
 322
 323     if (seq_param.frame_cropping_flag) {
 324         bitstream_put_ue(bs, seq_param.frame_crop_left_offset);        /* frame_crop_left_offset */
 325         bitstream_put_ue(bs, seq_param.frame_crop_right_offset);       /* frame_crop_right_offset */
 326         bitstream_put_ue(bs, seq_param.frame_crop_top_offset);         /* frame_crop_top_offset */
 327         bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset);      /* frame_crop_bottom_offset */
 328     }
 329
 330     //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
 331     if ( false ) {
 332         bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
 333     } else {
 334         // See H.264 annex E for the definition of this header.
 335         bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
 336         bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
 337         bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
 338         bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
 339         {
 340             bitstream_put_ui(bs, 5, 3);  /* video_format (5 = Unspecified) */
 341             bitstream_put_ui(bs, 0, 1);  /* video_full_range_flag */
 342             bitstream_put_ui(bs, 1, 1);  /* colour_description_present_flag */
 343             {
 344                 bitstream_put_ui(bs, 1, 8);  /* colour_primaries (1 = BT.709) */
 345                 bitstream_put_ui(bs, 13, 8);  /* transfer_characteristics (13 = sRGB) */
 346                 if (ycbcr_coefficients == YCBCR_REC_709) {
 347                     bitstream_put_ui(bs, 1, 8);  /* matrix_coefficients (1 = BT.709) */
 348                 } else {
 349                     assert(ycbcr_coefficients == YCBCR_REC_601);
 350                     bitstream_put_ui(bs, 6, 8);  /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
 351                 }
 352             }
 353         }
 354         bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
 355         bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
 356         {
 357             bitstream_put_ui(bs, 1, 32);  // FPS
 358             bitstream_put_ui(bs, TIMEBASE * 2, 32);  // FPS
 359             bitstream_put_ui(bs, 1, 1);
 360         }
 361         bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
 362         {
 363             // hrd_parameters
 364             bitstream_put_ue(bs, 0);    /* cpb_cnt_minus1 */
 365             bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
 366             bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
 367
 368             bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
 369             bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
 370             bitstream_put_ui(bs, 1, 1);  /* cbr_flag[0] */
 371
 372             bitstream_put_ui(bs, 23, 5);   /* initial_cpb_removal_delay_length_minus1 */
 373             bitstream_put_ui(bs, 23, 5);   /* cpb_removal_delay_length_minus1 */
 374             bitstream_put_ui(bs, 23, 5);   /* dpb_output_delay_length_minus1 */
 375             bitstream_put_ui(bs, 23, 5);   /* time_offset_length  */
 376         }
 377         bitstream_put_ui(bs, 0, 1);   /* vcl_hrd_parameters_present_flag */
 378         bitstream_put_ui(bs, 0, 1);   /* low_delay_hrd_flag */
 379
 380         bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
 381         bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
 382     }
 383
 384     rbsp_trailing_bits(bs);     /* rbsp_trailing_bits */
 385 }
 386
 387
 388 void QuickSyncEncoderImpl::pps_rbsp(bitstream *bs)
 389 {
 390     bitstream_put_ue(bs, pic_param.pic_parameter_set_id);      /* pic_parameter_set_id */
 391     bitstream_put_ue(bs, pic_param.seq_parameter_set_id);      /* seq_parameter_set_id */
 392
 393     bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1);  /* entropy_coding_mode_flag */
 394
 395     bitstream_put_ui(bs, 0, 1);                         /* pic_order_present_flag: 0 */
 396
 397     bitstream_put_ue(bs, 0);                            /* num_slice_groups_minus1 */
 398
 399     bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1);      /* num_ref_idx_l0_active_minus1 */
 400     bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1);      /* num_ref_idx_l1_active_minus1 1 */
 401
 402     bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1);     /* weighted_pred_flag: 0 */
 403     bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2);     /* weighted_bipred_idc: 0 */
 404
 405     bitstream_put_se(bs, pic_param.pic_init_qp - 26);  /* pic_init_qp_minus26 */
 406     bitstream_put_se(bs, 0);                            /* pic_init_qs_minus26 */
 407     bitstream_put_se(bs, 0);                            /* chroma_qp_index_offset */
 408
 409     bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
 410     bitstream_put_ui(bs, 0, 1);                         /* constrained_intra_pred_flag */
 411     bitstream_put_ui(bs, 0, 1);                         /* redundant_pic_cnt_present_flag */
 412
 413     /* more_rbsp_data */
 414     bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1);    /*transform_8x8_mode_flag */
 415     bitstream_put_ui(bs, 0, 1);                         /* pic_scaling_matrix_present_flag */
 416     bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset );    /*second_chroma_qp_index_offset */
 417
 418     rbsp_trailing_bits(bs);
 419 }
 420
 421 void QuickSyncEncoderImpl::slice_header(bitstream *bs)
 422 {
 423     int first_mb_in_slice = slice_param.macroblock_address;
 424
 425     bitstream_put_ue(bs, first_mb_in_slice);        /* first_mb_in_slice: 0 */
 426     bitstream_put_ue(bs, slice_param.slice_type);   /* slice_type */
 427     bitstream_put_ue(bs, slice_param.pic_parameter_set_id);        /* pic_parameter_set_id: 0 */
 428     bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
 429
 430     /* frame_mbs_only_flag == 1 */
 431     if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
 432         /* FIXME: */
 433         assert(0);
 434     }
 435
 436     if (pic_param.pic_fields.bits.idr_pic_flag)
 437         bitstream_put_ue(bs, slice_param.idr_pic_id);           /* idr_pic_id: 0 */
 438
 439     if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
 440         bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
 441         /* pic_order_present_flag == 0 */
 442     } else {
 443         /* FIXME: */
 444         assert(0);
 445     }
 446
 447     /* redundant_pic_cnt_present_flag == 0 */
 448     /* slice type */
 449     if (IS_P_SLICE(slice_param.slice_type)) {
 450         bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1);            /* num_ref_idx_active_override_flag: */
 451
 452         if (slice_param.num_ref_idx_active_override_flag)
 453             bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
 454
 455         /* ref_pic_list_reordering */
 456         bitstream_put_ui(bs, 0, 1);            /* ref_pic_list_reordering_flag_l0: 0 */
 457     } else if (IS_B_SLICE(slice_param.slice_type)) {
 458         bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1);            /* direct_spatial_mv_pred: 1 */
 459
 460         bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1);       /* num_ref_idx_active_override_flag: */
 461
 462         if (slice_param.num_ref_idx_active_override_flag) {
 463             bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
 464             bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
 465         }
 466
 467         /* ref_pic_list_reordering */
 468         bitstream_put_ui(bs, 0, 1);            /* ref_pic_list_reordering_flag_l0: 0 */
 469         bitstream_put_ui(bs, 0, 1);            /* ref_pic_list_reordering_flag_l1: 0 */
 470     }
 471
 472     if ((pic_param.pic_fields.bits.weighted_pred_flag &&
 473          IS_P_SLICE(slice_param.slice_type)) ||
 474         ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
 475          IS_B_SLICE(slice_param.slice_type))) {
 476         /* FIXME: fill weight/offset table */
 477         assert(0);
 478     }
 479
 480     /* dec_ref_pic_marking */
 481     if (pic_param.pic_fields.bits.reference_pic_flag) {     /* nal_ref_idc != 0 */
 482         unsigned char no_output_of_prior_pics_flag = 0;
 483         unsigned char long_term_reference_flag = 0;
 484         unsigned char adaptive_ref_pic_marking_mode_flag = 0;
 485
 486         if (pic_param.pic_fields.bits.idr_pic_flag) {
 487             bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1);            /* no_output_of_prior_pics_flag: 0 */
 488             bitstream_put_ui(bs, long_term_reference_flag, 1);            /* long_term_reference_flag: 0 */
 489         } else {
 490             bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1);            /* adaptive_ref_pic_marking_mode_flag: 0 */
 491         }
 492     }
 493
 494     if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
 495         !IS_I_SLICE(slice_param.slice_type))
 496         bitstream_put_ue(bs, slice_param.cabac_init_idc);               /* cabac_init_idc: 0 */
 497
 498     bitstream_put_se(bs, slice_param.slice_qp_delta);                   /* slice_qp_delta: 0 */
 499
 500     /* ignore for SP/SI */
 501
 502     if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
 503         bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc);           /* disable_deblocking_filter_idc: 0 */
 504
 505         if (slice_param.disable_deblocking_filter_idc != 1) {
 506             bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2);          /* slice_alpha_c0_offset_div2: 2 */
 507             bitstream_put_se(bs, slice_param.slice_beta_offset_div2);              /* slice_beta_offset_div2: 2 */
 508         }
 509     }
 510
 511     if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
 512         bitstream_byte_aligning(bs, 1);
 513     }
 514 }
 515
 516 int QuickSyncEncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
 517 {
 518     bitstream bs;
 519
 520     bitstream_start(&bs);
 521     nal_start_code_prefix(&bs);
 522     nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
 523     pps_rbsp(&bs);
 524     bitstream_end(&bs);
 525
 526     *header_buffer = (unsigned char *)bs.buffer;
 527     return bs.bit_offset;
 528 }
 529
 530 int
 531 QuickSyncEncoderImpl::build_packed_seq_buffer(YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer)
 532 {
 533     bitstream bs;
 534
 535     bitstream_start(&bs);
 536     nal_start_code_prefix(&bs);
 537     nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
 538     sps_rbsp(ycbcr_coefficients, &bs);
 539     bitstream_end(&bs);
 540
 541     *header_buffer = (unsigned char *)bs.buffer;
 542     return bs.bit_offset;
 543 }
 544
 545 int QuickSyncEncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
 546 {
 547     bitstream bs;
 548     int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
 549     int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
 550
 551     bitstream_start(&bs);
 552     nal_start_code_prefix(&bs);
 553
 554     if (IS_I_SLICE(slice_param.slice_type)) {
 555         nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
 556     } else if (IS_P_SLICE(slice_param.slice_type)) {
 557         nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
 558     } else {
 559         assert(IS_B_SLICE(slice_param.slice_type));
 560         nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
 561     }
 562
 563     slice_header(&bs);
 564     bitstream_end(&bs);
 565
 566     *header_buffer = (unsigned char *)bs.buffer;
 567     return bs.bit_offset;
 568 }
 569
 570
 571 /*
 572   Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
 573   1) period between Frame #X and Frame #N = #X - #N
 574   2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
 575   3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
 576   4) intra_period and intra_idr_period take precedence over ip_period
 577   5) if ip_period > 1, intra_period and intra_idr_period are not  the strict periods
 578      of I/IDR frames, see bellow examples
 579   -------------------------------------------------------------------
 580   intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
 581   0            ignored          1          IDRPPPPPPP ...     (No IDR/I any more)
 582   0            ignored        >=2          IDR(PBB)(PBB)...   (No IDR/I any more)
 583   1            0                ignored    IDRIIIIIII...      (No IDR any more)
 584   1            1                ignored    IDR IDR IDR IDR...
 585   1            >=2              ignored    IDRII IDRII IDR... (1/3/ignore)
 586   >=2          0                1          IDRPPP IPPP I...   (3/0/1)
 587   >=2          0              >=2          IDR(PBB)(PBB)(IBB) (6/0/3)
 588                                               (PBB)(IBB)(PBB)(IBB)...
 589   >=2          >=2              1          IDRPPPPP IPPPPP IPPPPP (6/18/1)
 590                                            IDRPPPPP IPPPPP IPPPPP...
 591   >=2          >=2              >=2        {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
 592                                            {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
 593                                            {IDR(PBB)(PBB)(IBB)(PBB)}           (6/12/3)
 594                                            {IDR(PBB)(PBB)(IBB)(PBB)}...
 595                                            {IDR(PBB)(PBB)}                     (6/6/3)
 596                                            {IDR(PBB)(PBB)}.
 597 */
 598
 599 #define FRAME_P 0
 600 #define FRAME_B 1
 601 #define FRAME_I 2
 602 #define FRAME_IDR 7
 603 void encoding2display_order(
 604     int encoding_order, int intra_period,
 605     int intra_idr_period, int ip_period,
 606     int *displaying_order,
 607     int *frame_type)
 608 {
 609     int encoding_order_gop = 0;
 610
 611     if (intra_period == 1) { /* all are I/IDR frames */
 612         *displaying_order = encoding_order;
 613         if (intra_idr_period == 0)
 614             *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
 615         else
 616             *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
 617         return;
 618     }
 619
 620     if (intra_period == 0)
 621         intra_idr_period = 0;
 622
 623     if (ip_period == 1) {
 624         // No B-frames, sequence is like IDR PPPPP IPPPPP.
 625         encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
 626         *displaying_order = encoding_order;
 627
 628         if (encoding_order_gop == 0) { /* the first frame */
 629             *frame_type = FRAME_IDR;
 630         } else if (intra_period != 0 && /* have I frames */
 631                    encoding_order_gop >= 2 &&
 632                    (encoding_order_gop % intra_period == 0)) {
 633             *frame_type = FRAME_I;
 634         } else {
 635             *frame_type = FRAME_P;
 636         }
 637         return;
 638     }
 639
 640     // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
 641     encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
 642
 643     if (encoding_order_gop == 0) { /* the first frame */
 644         *frame_type = FRAME_IDR;
 645         *displaying_order = encoding_order;
 646     } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
 647         *frame_type = FRAME_B;
 648         *displaying_order = encoding_order - 1;
 649     } else if (intra_period != 0 && /* have I frames */
 650                encoding_order_gop >= 2 &&
 651                ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
 652         *frame_type = FRAME_I;
 653         *displaying_order = encoding_order + ip_period - 1;
 654     } else {
 655         *frame_type = FRAME_P;
 656         *displaying_order = encoding_order + ip_period - 1;
 657     }
 658 }
 659
 660 // General pts/dts strategy:
 661 //
 662 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
 663 // bit tricky. This strategy roughly matches what x264 seems to do: We take in
 664 // the pts as the frames are encoded, and reuse that as dts in the same order,
 665 // slightly offset.
 666 //
 667 // If we don't have B-frames (only I and P), this means pts == dts always.
 668 // This is the simple case. Now consider the case with a single B-frame:
 669 //
 670 //        I  B  P  B  P
 671 //   pts: 30 40 50 60 70
 672 //
 673 // Since we always inherently encode P-frames before B-frames, this means that
 674 // we see them in this order, which we can _almost_ use for dts:
 675 //
 676 //   dts: 30 50 40 70 60
 677 //
 678 // the only problem here is that for the B-frames, pts < dts. We solve this by
 679 // priming the queue at the very start with some made-up dts:
 680 //
 681 //        I  B  P  B  P
 682 //   pts: 30 40 50 60 70
 683 //   dts: xx 30 50 40 70 60
 684 //
 685 // Now we have all the desirable properties: pts >= dts, successive dts delta
 686 // is never larger than the decoder can figure out (assuming, of course,
 687 // the pts has that property), and there's minimal lag between pts and dts.
 688 // For the made-up dts, we assume 1/60 sec per frame, which should generally
 689 // be reasonable. dts can go negative, but this is corrected using global_delay()
 690 // by delaying both pts and dts (although we probably don't need to).
 691 //
 692 // If there's more than one B-frame possible, we simply insert more of them
 693 // (here shown with some irregular spacing, assuming B-frames don't depend
 694 // on each other and simply go back-to-front):
 695 //
 696 //        I  B  B  B  P  B  B  B  P
 697 //   pts: 30 40 55 60 65 66 67 68 80
 698 //   dts: xx yy zz 30 65 60 55 40 80 68 67 66
 699 class DTSReorderer {
 700 public:
 701         DTSReorderer(int num_b_frames) : num_b_frames(num_b_frames) {}
 702
 703         void push_pts(int64_t pts)
 704         {
 705                 if (buf.empty() && num_b_frames > 0) {  // First frame.
 706                         int64_t base_dts = pts - num_b_frames * (TIMEBASE / TYPICAL_FPS);
 707                         for (int i = 0; i < num_b_frames; ++i) {
 708                                 buf.push(base_dts + i * (TIMEBASE / TYPICAL_FPS));
 709                         }
 710                 }
 711                 buf.push(pts);
 712         }
 713
 714         int64_t pop_dts()
 715         {
 716                 assert(!buf.empty());
 717                 int64_t dts = buf.front();
 718                 buf.pop();
 719                 return dts;
 720         }
 721
 722 private:
 723         const int num_b_frames;
 724         queue<int64_t> buf;
 725 };
 726
 727 void QuickSyncEncoderImpl::enable_zerocopy_if_possible()
 728 {
 729         if (global_flags.x264_video_to_disk) {
 730                 // Quick Sync is entirely disabled.
 731                 use_zerocopy = false;
 732         } else if (global_flags.x264_video_to_http) {
 733                 use_zerocopy = false;
 734         } else if (global_flags.av1_video_to_http) {
 735                 use_zerocopy = false;
 736         } else if (!global_flags.v4l_output_device.empty()) {
 737                 use_zerocopy = false;
 738         } else {
 739                 use_zerocopy = true;
 740         }
 741         global_flags.use_zerocopy = use_zerocopy;
 742 }
 743
 744 static unique_ptr<VADisplayWithCleanup> try_open_va_h264(const string &va_display, VAProfile *h264_profile, string *error)
 745 {
 746         return try_open_va(va_display, { VAProfileH264High, VAProfileH264Main, VAProfileH264ConstrainedBaseline },
 747                 VAEntrypointEncSlice, /*desired_configs=*/{}, h264_profile, error);
 748 }
 749
 750 int QuickSyncEncoderImpl::init_va(const string &va_display)
 751 {
 752     string error;
 753     va_dpy = try_open_va_h264(va_display, &h264_profile, &error);
 754     if (va_dpy == nullptr) {
 755         fprintf(stderr, "error: %s\n", error.c_str());
 756         abort();
 757     }
 758     if (!va_dpy->can_use_zerocopy) {
 759         use_zerocopy = false;
 760     }
 761
 762     switch (h264_profile) {
 763         case VAProfileH264ConstrainedBaseline:
 764             constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
 765             ip_period = 1;
 766             break;
 767
 768         case VAProfileH264Main:
 769             constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
 770             break;
 771
 772         case VAProfileH264High:
 773             constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
 774             break;
 775         default:
 776             h264_profile = VAProfileH264ConstrainedBaseline;
 777             ip_period = 1;
 778             constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
 779             break;
 780     }
 781
 782     VAConfigAttrib attrib[VAConfigAttribTypeMax];
 783
 784     /* find out the format for the render target, and rate control mode */
 785     for (unsigned i = 0; i < VAConfigAttribTypeMax; i++)
 786         attrib[i].type = (VAConfigAttribType)i;
 787
 788     VAStatus va_status = vaGetConfigAttributes(va_dpy->va_dpy, h264_profile, VAEntrypointEncSlice,
 789                                       &attrib[0], VAConfigAttribTypeMax);
 790     CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
 791     /* check the interested configattrib */
 792     if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
 793         printf("Not find desired YUV420 RT format\n");
 794         abort();
 795     } else {
 796         config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
 797         config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
 798         config_attrib_num++;
 799     }
 800
 801     if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
 802         if (!(attrib[VAConfigAttribRateControl].value & VA_RC_CQP)) {
 803             fprintf(stderr, "ERROR: VA-API encoder does not support CQP mode.\n");
 804             abort();
 805         }
 806
 807         config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
 808         config_attrib[config_attrib_num].value = VA_RC_CQP;
 809         config_attrib_num++;
 810     }
 811
 812
 813     if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
 814         int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
 815
 816         h264_packedheader = 1;
 817         config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
 818         config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
 819
 820         if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
 821             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
 822         }
 823
 824         if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
 825             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
 826         }
 827
 828         if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
 829             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
 830         }
 831
 832         if (tmp & VA_ENC_PACKED_HEADER_MISC) {
 833             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
 834         }
 835
 836         enc_packed_header_idx = config_attrib_num;
 837         config_attrib_num++;
 838     }
 839
 840     if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
 841         config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
 842         config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
 843         config_attrib_num++;
 844     }
 845
 846     if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
 847         h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
 848     }
 849
 850     return 0;
 851 }
 852
 853 int QuickSyncEncoderImpl::setup_encode()
 854 {
 855         if (!global_flags.x264_video_to_disk) {
 856                 VAStatus va_status;
 857                 VASurfaceID *tmp_surfaceid;
 858                 int codedbuf_size;
 859                 VASurfaceID src_surface[SURFACE_NUM];
 860                 VASurfaceID ref_surface[SURFACE_NUM];
 861
 862                 va_status = vaCreateConfig(va_dpy->va_dpy, h264_profile, VAEntrypointEncSlice,
 863                                 &config_attrib[0], config_attrib_num, &config_id);
 864                 CHECK_VASTATUS(va_status, "vaCreateConfig");
 865
 866                 /* create source surfaces */
 867                 va_status = vaCreateSurfaces(va_dpy->va_dpy,
 868                                 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
 869                                 &src_surface[0], SURFACE_NUM,
 870                                 NULL, 0);
 871                 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
 872
 873                 /* create reference surfaces */
 874                 va_status = vaCreateSurfaces(va_dpy->va_dpy,
 875                                 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
 876                                 &ref_surface[0], SURFACE_NUM,
 877                                 NULL, 0);
 878                 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
 879
 880                 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
 881                 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
 882                 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
 883
 884                 for (int i = 0; i < SURFACE_NUM; i++) {
 885                         gl_surfaces[i].src_surface = src_surface[i];
 886                         gl_surfaces[i].ref_surface = ref_surface[i];
 887                 }
 888
 889                 /* Create a context for this encode pipe */
 890                 va_status = vaCreateContext(va_dpy->va_dpy, config_id,
 891                                 frame_width_mbaligned, frame_height_mbaligned,
 892                                 VA_PROGRESSIVE,
 893                                 tmp_surfaceid, 2 * SURFACE_NUM,
 894                                 &context_id);
 895                 CHECK_VASTATUS(va_status, "vaCreateContext");
 896                 free(tmp_surfaceid);
 897
 898                 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
 899
 900                 for (int i = 0; i < SURFACE_NUM; i++) {
 901                         /* create coded buffer once for all
 902                          * other VA buffers which won't be used again after vaRenderPicture.
 903                          * so APP can always vaCreateBuffer for every frame
 904                          * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
 905                          * so VA won't maintain the coded buffer
 906                          */
 907                         va_status = vaCreateBuffer(va_dpy->va_dpy, context_id, VAEncCodedBufferType,
 908                                         codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
 909                         CHECK_VASTATUS(va_status, "vaCreateBuffer");
 910                 }
 911         }
 912
 913         /* create OpenGL objects */
 914         for (int i = 0; i < SURFACE_NUM; i++) {
 915                 if (use_zerocopy) {
 916                         gl_surfaces[i].y_tex = resource_pool->create_2d_texture(GL_R8, 1, 1);
 917                         gl_surfaces[i].cbcr_tex = resource_pool->create_2d_texture(GL_RG8, 1, 1);
 918                 } else {
 919                         size_t bytes_per_pixel = (global_flags.bit_depth > 8) ? 2 : 1;
 920
 921                         // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
 922                         // buffers, due to potentially differing pitch.
 923                         glGenBuffers(1, &gl_surfaces[i].pbo);
 924                         glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
 925                         glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2 * bytes_per_pixel, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
 926                         uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2 * bytes_per_pixel, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
 927                         gl_surfaces[i].y_offset = 0;
 928                         gl_surfaces[i].cbcr_offset = frame_width * frame_height * bytes_per_pixel;
 929                         gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
 930                         gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
 931                         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
 932                 }
 933         }
 934
 935         return 0;
 936 }
 937
 938 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
 939 //
 940 //   2 1 0 [3] 4 8 9
 941 template<class T, class C>
 942 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
 943 {
 944         T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
 945         sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
 946         sort(middle, end, less_than);
 947 }
 948
 949 void QuickSyncEncoderImpl::update_ReferenceFrames(int current_display_frame, int frame_type)
 950 {
 951     if (frame_type == FRAME_B)
 952         return;
 953
 954     pic_param.CurrPic.frame_idx = current_ref_frame_num;
 955
 956     CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
 957     lock_guard<mutex> lock(storage_task_queue_mutex);
 958
 959     // Insert the new frame at the start of the reference queue.
 960     reference_frames.push_front(ReferenceFrame{ CurrentCurrPic, current_display_frame });
 961
 962     if (reference_frames.size() > num_ref_frames)
 963     {
 964         // The back frame frame is no longer in use as a reference.
 965         int display_frame_num = reference_frames.back().display_number;
 966         assert(surface_for_frame.count(display_frame_num));
 967         release_gl_surface(display_frame_num);
 968         reference_frames.pop_back();
 969     }
 970
 971     // Mark this frame in use as a reference.
 972     assert(surface_for_frame.count(current_display_frame));
 973     ++surface_for_frame[current_display_frame]->refcount;
 974
 975     current_ref_frame_num++;
 976     if (current_ref_frame_num > MaxFrameNum)
 977         current_ref_frame_num = 0;
 978 }
 979
 980
 981 void QuickSyncEncoderImpl::update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2])
 982 {
 983     const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
 984         return a.frame_idx > b.frame_idx;
 985     };
 986
 987     for (size_t i = 0; i < reference_frames.size(); ++i) {
 988         RefPicList0_P[i] = reference_frames[i].pic;
 989     }
 990     sort(&RefPicList0_P[0], &RefPicList0_P[reference_frames.size()], descending_by_frame_idx);
 991 }
 992
 993 void QuickSyncEncoderImpl::update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2])
 994 {
 995     const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
 996         return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
 997     };
 998     const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
 999         return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1000     };
1001
1002     for (size_t i = 0; i < reference_frames.size(); ++i) {
1003         RefPicList0_B[i] = reference_frames[i].pic;
1004         RefPicList1_B[i] = reference_frames[i].pic;
1005     }
1006     sort_two(&RefPicList0_B[0], &RefPicList0_B[reference_frames.size()], CurrentCurrPic, ascending_by_top_field_order_cnt);
1007     sort_two(&RefPicList1_B[0], &RefPicList1_B[reference_frames.size()], CurrentCurrPic, descending_by_top_field_order_cnt);
1008 }
1009
1010
1011 int QuickSyncEncoderImpl::render_sequence()
1012 {
1013     VABufferID seq_param_buf, rc_param_buf, render_id[2];
1014     VAStatus va_status;
1015     VAEncMiscParameterBuffer *misc_param;
1016     VAEncMiscParameterRateControl *misc_rate_ctrl;
1017
1018     seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1019     seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1020     seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1021     seq_param.bits_per_second = frame_bitrate;
1022
1023     seq_param.intra_period = intra_period;
1024     seq_param.intra_idr_period = intra_idr_period;
1025     seq_param.ip_period = ip_period;
1026
1027     seq_param.max_num_ref_frames = num_ref_frames;
1028     seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1029     seq_param.time_scale = TIMEBASE * 2;
1030     seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1031     seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1032     seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1033     seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1034     seq_param.seq_fields.bits.chroma_format_idc = 1;
1035     seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1036
1037     if (frame_width != frame_width_mbaligned ||
1038         frame_height != frame_height_mbaligned) {
1039         seq_param.frame_cropping_flag = 1;
1040         seq_param.frame_crop_left_offset = 0;
1041         seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1042         seq_param.frame_crop_top_offset = 0;
1043         seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1044     }
1045
1046     va_status = vaCreateBuffer(va_dpy->va_dpy, context_id,
1047                                VAEncSequenceParameterBufferType,
1048                                sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1049     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1050
1051     va_status = vaCreateBuffer(va_dpy->va_dpy, context_id,
1052                                VAEncMiscParameterBufferType,
1053                                sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1054                                1, NULL, &rc_param_buf);
1055     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1056
1057     vaMapBuffer(va_dpy->va_dpy, rc_param_buf, (void **)&misc_param);
1058     misc_param->type = VAEncMiscParameterTypeRateControl;
1059     misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1060     memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1061     misc_rate_ctrl->bits_per_second = frame_bitrate;
1062     misc_rate_ctrl->target_percentage = 66;
1063     misc_rate_ctrl->window_size = 1000;
1064     misc_rate_ctrl->initial_qp = initial_qp;
1065     misc_rate_ctrl->min_qp = minimal_qp;
1066     misc_rate_ctrl->basic_unit_size = 0;
1067     vaUnmapBuffer(va_dpy->va_dpy, rc_param_buf);
1068
1069     render_id[0] = seq_param_buf;
1070     render_id[1] = rc_param_buf;
1071
1072     render_picture_and_delete(va_dpy->va_dpy, context_id, &render_id[0], 2);
1073
1074     return 0;
1075 }
1076
1077 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1078 {
1079     static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1080     int prevPicOrderCntMsb, prevPicOrderCntLsb;
1081     int PicOrderCntMsb, TopFieldOrderCnt;
1082
1083     if (frame_type == FRAME_IDR)
1084         prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1085     else {
1086         prevPicOrderCntMsb = PicOrderCntMsb_ref;
1087         prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1088     }
1089
1090     if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1091         ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1092         PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1093     else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1094              ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1095         PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1096     else
1097         PicOrderCntMsb = prevPicOrderCntMsb;
1098
1099     TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1100
1101     if (frame_type != FRAME_B) {
1102         PicOrderCntMsb_ref = PicOrderCntMsb;
1103         pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1104     }
1105
1106     return TopFieldOrderCnt;
1107 }
1108
1109 int QuickSyncEncoderImpl::render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num)
1110 {
1111     VABufferID pic_param_buf;
1112     VAStatus va_status;
1113     size_t i = 0;
1114
1115     pic_param.CurrPic.picture_id = surf->ref_surface;
1116     pic_param.CurrPic.frame_idx = current_ref_frame_num;
1117     pic_param.CurrPic.flags = 0;
1118     pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1119     pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1120     CurrentCurrPic = pic_param.CurrPic;
1121
1122     for (i = 0; i < reference_frames.size(); i++) {
1123         pic_param.ReferenceFrames[i] = reference_frames[i].pic;
1124     }
1125     for (i = reference_frames.size(); i < MAX_NUM_REF1; i++) {
1126         pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1127         pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1128     }
1129
1130     pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1131     pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1132     pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1133     pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1134     pic_param.frame_num = current_ref_frame_num;  // FIXME: is this correct?
1135     pic_param.coded_buf = surf->coded_buf;
1136     pic_param.last_picture = false;  // FIXME
1137     pic_param.pic_init_qp = initial_qp;
1138
1139     va_status = vaCreateBuffer(va_dpy->va_dpy, context_id, VAEncPictureParameterBufferType,
1140                                sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1141     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1142
1143     render_picture_and_delete(va_dpy->va_dpy, context_id, &pic_param_buf, 1);
1144
1145     return 0;
1146 }
1147
1148 int QuickSyncEncoderImpl::render_packedsequence(YCbCrLumaCoefficients ycbcr_coefficients)
1149 {
1150     VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1151     VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1152     unsigned int length_in_bits;
1153     unsigned char *packedseq_buffer = NULL;
1154     VAStatus va_status;
1155
1156     length_in_bits = build_packed_seq_buffer(ycbcr_coefficients, &packedseq_buffer);
1157
1158     packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1159
1160     packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1161     packedheader_param_buffer.has_emulation_bytes = 0;
1162     va_status = vaCreateBuffer(va_dpy->va_dpy,
1163                                context_id,
1164                                VAEncPackedHeaderParameterBufferType,
1165                                sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1166                                &packedseq_para_bufid);
1167     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1168
1169     va_status = vaCreateBuffer(va_dpy->va_dpy,
1170                                context_id,
1171                                VAEncPackedHeaderDataBufferType,
1172                                (length_in_bits + 7) / 8, 1, packedseq_buffer,
1173                                &packedseq_data_bufid);
1174     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1175
1176     render_id[0] = packedseq_para_bufid;
1177     render_id[1] = packedseq_data_bufid;
1178     render_picture_and_delete(va_dpy->va_dpy, context_id, render_id, 2);
1179
1180     free(packedseq_buffer);
1181
1182     return 0;
1183 }
1184
1185
1186 int QuickSyncEncoderImpl::render_packedpicture()
1187 {
1188     VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1189     VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1190     unsigned int length_in_bits;
1191     unsigned char *packedpic_buffer = NULL;
1192     VAStatus va_status;
1193
1194     length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1195     packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1196     packedheader_param_buffer.bit_length = length_in_bits;
1197     packedheader_param_buffer.has_emulation_bytes = 0;
1198
1199     va_status = vaCreateBuffer(va_dpy->va_dpy,
1200                                context_id,
1201                                VAEncPackedHeaderParameterBufferType,
1202                                sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1203                                &packedpic_para_bufid);
1204     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1205
1206     va_status = vaCreateBuffer(va_dpy->va_dpy,
1207                                context_id,
1208                                VAEncPackedHeaderDataBufferType,
1209                                (length_in_bits + 7) / 8, 1, packedpic_buffer,
1210                                &packedpic_data_bufid);
1211     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1212
1213     render_id[0] = packedpic_para_bufid;
1214     render_id[1] = packedpic_data_bufid;
1215     render_picture_and_delete(va_dpy->va_dpy, context_id, render_id, 2);
1216
1217     free(packedpic_buffer);
1218
1219     return 0;
1220 }
1221
1222 void QuickSyncEncoderImpl::render_packedslice()
1223 {
1224     VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1225     VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1226     unsigned int length_in_bits;
1227     unsigned char *packedslice_buffer = NULL;
1228     VAStatus va_status;
1229
1230     length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1231     packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1232     packedheader_param_buffer.bit_length = length_in_bits;
1233     packedheader_param_buffer.has_emulation_bytes = 0;
1234
1235     va_status = vaCreateBuffer(va_dpy->va_dpy,
1236                                context_id,
1237                                VAEncPackedHeaderParameterBufferType,
1238                                sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1239                                &packedslice_para_bufid);
1240     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1241
1242     va_status = vaCreateBuffer(va_dpy->va_dpy,
1243                                context_id,
1244                                VAEncPackedHeaderDataBufferType,
1245                                (length_in_bits + 7) / 8, 1, packedslice_buffer,
1246                                &packedslice_data_bufid);
1247     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1248
1249     render_id[0] = packedslice_para_bufid;
1250     render_id[1] = packedslice_data_bufid;
1251     render_picture_and_delete(va_dpy->va_dpy, context_id, render_id, 2);
1252
1253     free(packedslice_buffer);
1254 }
1255
1256 int QuickSyncEncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1257 {
1258     VABufferID slice_param_buf;
1259     VAStatus va_status;
1260     int i;
1261
1262     /* one frame, one slice */
1263     slice_param.macroblock_address = 0;
1264     slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1265     slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1266     if (frame_type == FRAME_IDR) {
1267         if (encoding_frame_num != 0)
1268             ++slice_param.idr_pic_id;
1269     } else if (frame_type == FRAME_P) {
1270         VAPictureH264 RefPicList0_P[MAX_NUM_REF2];
1271         update_RefPicList_P(RefPicList0_P);
1272
1273         int refpiclist0_max = h264_maxref & 0xffff;
1274         memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1275
1276         for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1277             slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1278             slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1279         }
1280     } else if (frame_type == FRAME_B) {
1281         VAPictureH264 RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
1282         update_RefPicList_B(RefPicList0_B, RefPicList1_B);
1283
1284         int refpiclist0_max = h264_maxref & 0xffff;
1285         int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1286
1287         memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1288         for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1289             slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1290             slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1291         }
1292
1293         memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1294         for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1295             slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1296             slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1297         }
1298     }
1299
1300     slice_param.slice_alpha_c0_offset_div2 = 0;
1301     slice_param.slice_beta_offset_div2 = 0;
1302     slice_param.direct_spatial_mv_pred_flag = 1;
1303     slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1304
1305
1306     if (h264_packedheader &&
1307         config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1308         render_packedslice();
1309
1310     va_status = vaCreateBuffer(va_dpy->va_dpy, context_id, VAEncSliceParameterBufferType,
1311                                sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1312     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1313
1314     render_picture_and_delete(va_dpy->va_dpy, context_id, &slice_param_buf, 1);
1315
1316     return 0;
1317 }
1318
1319
1320
1321 void QuickSyncEncoderImpl::save_codeddata(GLSurface *surf, storage_task task)
1322 {
1323         VACodedBufferSegment *buf_list = NULL;
1324         VAStatus va_status;
1325
1326         string data;
1327
1328         va_status = vaMapBuffer(va_dpy->va_dpy, surf->coded_buf, (void **)(&buf_list));
1329         CHECK_VASTATUS(va_status, "vaMapBuffer");
1330         while (buf_list != NULL) {
1331                 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1332                 buf_list = (VACodedBufferSegment *) buf_list->next;
1333         }
1334         vaUnmapBuffer(va_dpy->va_dpy, surf->coded_buf);
1335
1336         static int frameno = 0;
1337         print_latency("Current Quick Sync latency (video inputs → disk mux):",
1338                 task.received_ts, (task.frame_type == FRAME_B), &frameno, &qs_latency_histogram);
1339
1340         {
1341                 // Add video.
1342                 AVPacket pkt;
1343                 memset(&pkt, 0, sizeof(pkt));
1344                 pkt.buf = nullptr;
1345                 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1346                 pkt.size = data.size();
1347                 pkt.stream_index = 0;
1348                 if (task.frame_type == FRAME_IDR) {
1349                         pkt.flags = AV_PKT_FLAG_KEY;
1350                 } else {
1351                         pkt.flags = 0;
1352                 }
1353                 pkt.duration = task.duration;
1354                 if (file_mux) {
1355                         file_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1356                 }
1357                 if (!global_flags.x264_video_to_http &&
1358                     !global_flags.av1_video_to_http) {
1359                         http_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1360                         if (srt_mux != nullptr) {
1361                                 srt_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1362                         }
1363                 }
1364         }
1365 }
1366
1367
1368 // this is weird. but it seems to put a new frame onto the queue
1369 void QuickSyncEncoderImpl::storage_task_enqueue(storage_task task)
1370 {
1371         assert(task.pts >= task.dts);
1372         lock_guard<mutex> lock(storage_task_queue_mutex);
1373         storage_task_queue.push(move(task));
1374         storage_task_queue_changed.notify_all();
1375 }
1376
1377 void QuickSyncEncoderImpl::storage_task_thread()
1378 {
1379         pthread_setname_np(pthread_self(), "QS_Storage");
1380         for ( ;; ) {
1381                 storage_task current;
1382                 GLSurface *surf;
1383                 {
1384                         // wait until there's an encoded frame
1385                         unique_lock<mutex> lock(storage_task_queue_mutex);
1386                         storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1387                         if (storage_thread_should_quit && storage_task_queue.empty()) return;
1388                         current = move(storage_task_queue.front());
1389                         storage_task_queue.pop();
1390                         surf = surface_for_frame[current.display_order];
1391                         assert(surf != nullptr);
1392                 }
1393
1394                 VAStatus va_status;
1395
1396                 size_t display_order = current.display_order;
1397                 vector<size_t> ref_display_frame_numbers = move(current.ref_display_frame_numbers);
1398
1399                 // waits for data, then saves it to disk.
1400                 va_status = vaSyncSurface(va_dpy->va_dpy, surf->src_surface);
1401                 CHECK_VASTATUS(va_status, "vaSyncSurface");
1402                 save_codeddata(surf, move(current));
1403
1404                 // Unlock the frame, and all its references.
1405                 {
1406                         lock_guard<mutex> lock(storage_task_queue_mutex);
1407                         release_gl_surface(display_order);
1408
1409                         for (size_t frame_num : ref_display_frame_numbers) {
1410                                 release_gl_surface(frame_num);
1411                         }
1412                 }
1413         }
1414 }
1415
1416 void QuickSyncEncoderImpl::release_encode()
1417 {
1418         for (unsigned i = 0; i < SURFACE_NUM; i++) {
1419                 VAStatus va_status = vaDestroyBuffer(va_dpy->va_dpy, gl_surfaces[i].coded_buf);
1420                 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
1421                 va_status = vaDestroySurfaces(va_dpy->va_dpy, &gl_surfaces[i].src_surface, 1);
1422                 CHECK_VASTATUS(va_status, "vaDestroySurfaces");
1423                 va_status = vaDestroySurfaces(va_dpy->va_dpy, &gl_surfaces[i].ref_surface, 1);
1424                 CHECK_VASTATUS(va_status, "vaDestroySurfaces");
1425         }
1426
1427         VAStatus va_status = vaDestroyContext(va_dpy->va_dpy, context_id);
1428         CHECK_VASTATUS(va_status, "vaDestroyContext");
1429         va_status = vaDestroyConfig(va_dpy->va_dpy, config_id);
1430         CHECK_VASTATUS(va_status, "vaDestroyConfig");
1431 }
1432
1433 void QuickSyncEncoderImpl::release_gl_resources()
1434 {
1435         assert(is_shutdown);
1436         if (has_released_gl_resources) {
1437                 return;
1438         }
1439
1440         for (unsigned i = 0; i < SURFACE_NUM; i++) {
1441                 if (use_zerocopy) {
1442                         resource_pool->release_2d_texture(gl_surfaces[i].y_tex);
1443                         resource_pool->release_2d_texture(gl_surfaces[i].cbcr_tex);
1444                 } else {
1445                         glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1446                         glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1447                         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1448                         glDeleteBuffers(1, &gl_surfaces[i].pbo);
1449                 }
1450         }
1451
1452         has_released_gl_resources = true;
1453 }
1454
1455 QuickSyncEncoderImpl::QuickSyncEncoderImpl(const std::string &filename, ResourcePool *resource_pool, QSurface *surface, const string &va_display, int width, int height, const AVOutputFormat *oformat, VideoCodecInterface *http_encoder, VideoCodecInterface *disk_encoder, DiskSpaceEstimator *disk_space_estimator)
1456         : current_storage_frame(0), resource_pool(resource_pool), surface(surface), http_encoder(http_encoder), disk_encoder(disk_encoder), frame_width(width), frame_height(height), disk_space_estimator(disk_space_estimator)
1457 {
1458         file_audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, oformat));
1459         open_output_file(filename);
1460         file_audio_encoder->add_mux(file_mux.get());
1461
1462         frame_width_mbaligned = (frame_width + 15) & (~15);
1463         frame_height_mbaligned = (frame_height + 15) & (~15);
1464
1465         //print_input();
1466
1467         if (global_flags.x264_video_to_http || global_flags.x264_video_to_disk) {
1468                 assert(http_encoder != nullptr);
1469                 assert(disk_encoder != nullptr);
1470         } else if (global_flags.av1_video_to_http) {
1471                 assert(http_encoder != nullptr);
1472         } else {
1473                 assert(http_encoder == nullptr);
1474                 assert(disk_encoder == nullptr);
1475         }
1476
1477         enable_zerocopy_if_possible();
1478         if (!global_flags.x264_video_to_disk) {
1479                 init_va(va_display);
1480         }
1481         setup_encode();
1482
1483         if (!global_flags.x264_video_to_disk) {
1484                 memset(&seq_param, 0, sizeof(seq_param));
1485                 memset(&pic_param, 0, sizeof(pic_param));
1486                 memset(&slice_param, 0, sizeof(slice_param));
1487         }
1488
1489         if (!global_flags.v4l_output_device.empty()) {
1490                 v4l_output.reset(new V4LOutput(global_flags.v4l_output_device.c_str(), width, height));
1491         }
1492
1493         call_once(quick_sync_metrics_inited, [](){
1494                 mixer_latency_histogram.init("mixer");
1495                 qs_latency_histogram.init("quick_sync");
1496                 current_file_mux_metrics.init({{ "destination", "current_file" }});
1497                 total_mux_metrics.init({{ "destination", "files_total" }});
1498                 global_metrics.add("current_file_start_time_seconds", &metric_current_file_start_time_seconds, Metrics::TYPE_GAUGE);
1499                 global_metrics.add("quick_sync_stalled_frames", &metric_quick_sync_stalled_frames);
1500         });
1501
1502         storage_thread = thread(&QuickSyncEncoderImpl::storage_task_thread, this);
1503
1504         encode_thread = thread([this]{
1505                 QOpenGLContext *context = create_context(this->surface);
1506                 eglBindAPI(EGL_OPENGL_API);
1507                 if (!make_current(context, this->surface)) {
1508                         printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1509                                 eglGetError());
1510                         abort();
1511                 }
1512                 encode_thread_func();
1513                 delete_context(context);
1514         });
1515 }
1516
1517 QuickSyncEncoderImpl::~QuickSyncEncoderImpl()
1518 {
1519         shutdown();
1520         release_gl_resources();
1521 }
1522
1523 QuickSyncEncoderImpl::GLSurface *QuickSyncEncoderImpl::allocate_gl_surface()
1524 {
1525         for (unsigned i = 0; i < SURFACE_NUM; ++i) {
1526                 if (gl_surfaces[i].refcount == 0) {
1527                         ++gl_surfaces[i].refcount;
1528                         return &gl_surfaces[i];
1529                 }
1530         }
1531         return nullptr;
1532 }
1533
1534 void QuickSyncEncoderImpl::release_gl_surface(size_t display_frame_num)
1535 {
1536         assert(surface_for_frame.count(display_frame_num));
1537         QuickSyncEncoderImpl::GLSurface *surf = surface_for_frame[display_frame_num];
1538         if (--surf->refcount == 0) {
1539                 assert(surface_for_frame.count(display_frame_num));
1540                 surface_for_frame.erase(display_frame_num);
1541                 storage_task_queue_changed.notify_all();
1542         }
1543 }
1544
1545 bool QuickSyncEncoderImpl::is_zerocopy() const
1546 {
1547         return use_zerocopy;
1548 }
1549
1550 bool QuickSyncEncoderImpl::begin_frame(int64_t pts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex)
1551 {
1552         assert(!is_shutdown);
1553         GLSurface *surf = nullptr;
1554         {
1555                 // Wait until this frame slot is done encoding.
1556                 unique_lock<mutex> lock(storage_task_queue_mutex);
1557                 surf = allocate_gl_surface();
1558                 if (surf == nullptr) {
1559                         fprintf(stderr, "Warning: No free slots for frame %d, rendering has to wait for H.264 encoder\n",
1560                                 current_storage_frame);
1561                         ++metric_quick_sync_stalled_frames;
1562                         storage_task_queue_changed.wait(lock, [this, &surf]{
1563                                 if (storage_thread_should_quit)
1564                                         return true;
1565                                 surf = allocate_gl_surface();
1566                                 return surf != nullptr;
1567                         });
1568                 }
1569                 if (storage_thread_should_quit) return false;
1570                 assert(surf != nullptr);
1571                 surface_for_frame[current_storage_frame] = surf;
1572         }
1573
1574         if (use_zerocopy) {
1575                 *y_tex = surf->y_tex;
1576                 *cbcr_tex = surf->cbcr_tex;
1577         } else {
1578                 surf->y_tex = *y_tex;
1579                 surf->cbcr_tex = *cbcr_tex;
1580         }
1581
1582         if (!global_flags.x264_video_to_disk) {
1583                 VAStatus va_status = vaDeriveImage(va_dpy->va_dpy, surf->src_surface, &surf->surface_image);
1584                 CHECK_VASTATUS(va_status, "vaDeriveImage");
1585
1586                 if (use_zerocopy) {
1587                         VABufferInfo buf_info;
1588                         buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME;  // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1589                         va_status = vaAcquireBufferHandle(va_dpy->va_dpy, surf->surface_image.buf, &buf_info);
1590                         CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1591
1592                         // Create Y image.
1593                         surf->y_egl_image = EGL_NO_IMAGE_KHR;
1594                         EGLint y_attribs[] = {
1595                                 EGL_WIDTH, frame_width,
1596                                 EGL_HEIGHT, frame_height,
1597                                 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1598                                 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1599                                 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1600                                 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1601                                 EGL_NONE
1602                         };
1603
1604                         surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1605                         assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1606
1607                         // Associate Y image to a texture.
1608                         glBindTexture(GL_TEXTURE_2D, *y_tex);
1609                         glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1610
1611                         // Create CbCr image.
1612                         surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1613                         EGLint cbcr_attribs[] = {
1614                                 EGL_WIDTH, frame_width / 2,
1615                                 EGL_HEIGHT, frame_height / 2,
1616                                 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1617                                 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1618                                 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1619                                 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1620                                 EGL_NONE
1621                         };
1622
1623                         surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1624                         assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1625
1626                         // Associate CbCr image to a texture.
1627                         glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1628                         glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1629                 }
1630         }
1631
1632         current_video_frame = PendingFrame{ {}, input_frames, pts, duration, ycbcr_coefficients };
1633
1634         return true;
1635 }
1636
1637 void QuickSyncEncoderImpl::add_audio(int64_t pts, vector<float> audio)
1638 {
1639         lock_guard<mutex> lock(file_audio_encoder_mutex);
1640         assert(!is_shutdown);
1641         file_audio_encoder->encode_audio(audio, pts + global_delay());
1642 }
1643
1644 RefCountedGLsync QuickSyncEncoderImpl::end_frame()
1645 {
1646         assert(!is_shutdown);
1647
1648         if (!use_zerocopy) {
1649                 GLenum type = global_flags.bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
1650                 GLSurface *surf;
1651                 {
1652                         lock_guard<mutex> lock(storage_task_queue_mutex);
1653                         surf = surface_for_frame[current_storage_frame];
1654                         assert(surf != nullptr);
1655                 }
1656
1657                 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1658                 check_error();
1659
1660                 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1661                 check_error();
1662
1663                 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1664                 check_error();
1665                 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, type, BUFFER_OFFSET(surf->y_offset));
1666                 check_error();
1667
1668                 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1669                 check_error();
1670                 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, type, BUFFER_OFFSET(surf->cbcr_offset));
1671                 check_error();
1672
1673                 // We don't own these; the caller does.
1674                 surf->y_tex = surf->cbcr_tex = 0;
1675
1676                 glBindTexture(GL_TEXTURE_2D, 0);
1677                 check_error();
1678                 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1679                 check_error();
1680
1681                 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1682                 check_error();
1683         }
1684
1685         RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1686         check_error();
1687         glFlush();  // Make the H.264 thread see the fence as soon as possible.
1688         check_error();
1689
1690         {
1691                 lock_guard<mutex> lock(frame_queue_mutex);
1692                 current_video_frame.fence = fence;
1693                 pending_video_frames.push(move(current_video_frame));
1694                 ++current_storage_frame;
1695         }
1696         frame_queue_nonempty.notify_all();
1697         return fence;
1698 }
1699
1700 void QuickSyncEncoderImpl::shutdown()
1701 {
1702         if (is_shutdown) {
1703                 return;
1704         }
1705
1706         {
1707                 lock_guard<mutex> lock(frame_queue_mutex);
1708                 encode_thread_should_quit = true;
1709                 frame_queue_nonempty.notify_all();
1710         }
1711         encode_thread.join();
1712         {
1713                 lock_guard<mutex> lock(storage_task_queue_mutex);
1714                 storage_thread_should_quit = true;
1715                 frame_queue_nonempty.notify_all();
1716                 storage_task_queue_changed.notify_all();
1717         }
1718         storage_thread.join();
1719
1720         // Encode any leftover audio in the queues, and also any delayed frames.
1721         {
1722                 lock_guard<mutex> lock(file_audio_encoder_mutex);
1723                 file_audio_encoder->encode_last_audio();
1724         }
1725
1726         if (!global_flags.x264_video_to_disk) {
1727                 release_encode();
1728                 va_dpy.reset();
1729         }
1730         is_shutdown = true;
1731 }
1732
1733 void QuickSyncEncoderImpl::close_file()
1734 {
1735         file_mux.reset();
1736         metric_current_file_start_time_seconds = 0.0 / 0.0;
1737 }
1738
1739 void QuickSyncEncoderImpl::open_output_file(const std::string &filename)
1740 {
1741         AVFormatContext *avctx = avformat_alloc_context();
1742         avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL);
1743         avctx->url = strdup(filename.c_str());
1744
1745         string url = "file:" + filename;
1746         int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
1747         if (ret < 0) {
1748                 char tmp[AV_ERROR_MAX_STRING_SIZE];
1749                 fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret));
1750                 abort();
1751         }
1752
1753         string video_extradata;  // FIXME: See other comment about global headers.
1754         if (global_flags.x264_video_to_disk) {
1755                 video_extradata = disk_encoder->get_global_headers();
1756         }
1757
1758         current_file_mux_metrics.reset();
1759
1760         {
1761                 lock_guard<mutex> lock(file_audio_encoder_mutex);
1762                 AVCodecParametersWithDeleter audio_codecpar = file_audio_encoder->get_codec_parameters();
1763                 file_mux.reset(new Mux(avctx, frame_width, frame_height, Mux::CODEC_H264, video_extradata, audio_codecpar.get(), get_color_space(global_flags.ycbcr_rec709_coefficients), TIMEBASE,
1764                         std::bind(&DiskSpaceEstimator::report_append, disk_space_estimator, filename, _1),
1765                         Mux::WRITE_BACKGROUND,
1766                         { &current_file_mux_metrics, &total_mux_metrics }));
1767         }
1768         metric_current_file_start_time_seconds = get_timestamp_for_metrics();
1769
1770         if (global_flags.x264_video_to_disk) {
1771                 disk_encoder->add_mux(file_mux.get());
1772         }
1773 }
1774
1775 void QuickSyncEncoderImpl::encode_thread_func()
1776 {
1777         pthread_setname_np(pthread_self(), "QS_Encode");
1778
1779         DTSReorderer dts_reorder_buf(ip_period - 1);
1780
1781         int64_t last_dts = -1;
1782         int gop_start_display_frame_num = 0;
1783         for (int display_frame_num = 0; ; ++display_frame_num) {
1784                 // Wait for the frame to be in the queue. Note that this only means
1785                 // we started rendering it.
1786                 PendingFrame frame;
1787                 {
1788                         unique_lock<mutex> lock(frame_queue_mutex);
1789                         frame_queue_nonempty.wait(lock, [this]{
1790                                 return encode_thread_should_quit || !pending_video_frames.empty();
1791                         });
1792                         if (encode_thread_should_quit && pending_video_frames.empty()) {
1793                                 // We may have queued frames left in the reorder buffer
1794                                 // that were supposed to be B-frames, but have no P-frame
1795                                 // to be encoded against. If so, encode them all as
1796                                 // P-frames instead. Note that this happens under the mutex,
1797                                 // but nobody else uses it at this point, since we're shutting down,
1798                                 // so there's no contention.
1799                                 encode_remaining_frames_as_p(quicksync_encoding_frame_num, gop_start_display_frame_num, last_dts);
1800                                 return;
1801                         } else {
1802                                 frame = move(pending_video_frames.front());
1803                                 pending_video_frames.pop();
1804                         }
1805                 }
1806
1807                 dts_reorder_buf.push_pts(frame.pts);
1808
1809                 // Pass the frame on to x264 (or uncompressed to HTTP) as needed.
1810                 // Note that this implicitly waits for the frame to be done rendering.
1811                 pass_frame(frame, display_frame_num, frame.pts, frame.duration);
1812
1813                 if (global_flags.x264_video_to_disk) {
1814                         lock_guard<mutex> lock(storage_task_queue_mutex);
1815                         release_gl_surface(display_frame_num);
1816                         continue;
1817                 }
1818
1819                 reorder_buffer[display_frame_num] = move(frame);
1820
1821                 // Now encode as many QuickSync frames as we can using the frames we have available.
1822                 // (It could be zero, or it could be multiple.) FIXME: make a function.
1823                 for ( ;; ) {
1824                         int frame_type, quicksync_display_frame_num;
1825                         encoding2display_order(quicksync_encoding_frame_num, intra_period, intra_idr_period, ip_period,
1826                                                &quicksync_display_frame_num, &frame_type);
1827                         if (!reorder_buffer.count(quicksync_display_frame_num)) {
1828                                 break;
1829                         }
1830                         frame = move(reorder_buffer[quicksync_display_frame_num]);
1831                         reorder_buffer.erase(quicksync_display_frame_num);
1832
1833                         if (frame_type == FRAME_IDR) {
1834                                 // Release any reference frames from the previous GOP.
1835                                 {
1836                                         lock_guard<mutex> lock(storage_task_queue_mutex);
1837                                         for (const ReferenceFrame &frame : reference_frames) {
1838                                                 release_gl_surface(frame.display_number);
1839                                         }
1840                                 }
1841                                 reference_frames.clear();
1842                                 current_ref_frame_num = 0;
1843                                 gop_start_display_frame_num = quicksync_display_frame_num;
1844                         }
1845
1846                         const int64_t dts = dts_reorder_buf.pop_dts();
1847                         last_dts = dts;
1848
1849                         encode_frame(frame, quicksync_encoding_frame_num, quicksync_display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts, frame.duration, frame.ycbcr_coefficients);
1850                         ++quicksync_encoding_frame_num;
1851                 }
1852         }
1853 }
1854
1855 void QuickSyncEncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1856 {
1857         if (reorder_buffer.empty()) {
1858                 return;
1859         }
1860
1861         for (auto &pending_frame : reorder_buffer) {
1862                 int display_frame_num = pending_frame.first;
1863                 assert(display_frame_num > 0);
1864                 PendingFrame frame = move(pending_frame.second);
1865                 int64_t dts = last_dts + (TIMEBASE / TYPICAL_FPS);
1866                 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts, frame.duration, frame.ycbcr_coefficients);
1867                 last_dts = dts;
1868         }
1869 }
1870
1871 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
1872 {
1873         if (src_width == dst_pitch) {
1874                 memcpy(dst, src, src_width * height);
1875         } else {
1876                 for (size_t y = 0; y < height; ++y) {
1877                         const uint8_t *sptr = src + y * src_width;
1878                         uint8_t *dptr = dst + y * dst_pitch;
1879                         memcpy(dptr, sptr, src_width);
1880                 }
1881         }
1882 }
1883
1884 void QuickSyncEncoderImpl::pass_frame(QuickSyncEncoderImpl::PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration)
1885 {
1886         // Wait for the GPU to be done with the frame.
1887         GLenum sync_status;
1888         do {
1889                 sync_status = glClientWaitSync(frame.fence.get(), 0, 0);
1890                 check_error();
1891                 if (sync_status == GL_TIMEOUT_EXPIRED) {
1892                         // NVIDIA likes to busy-wait; yield instead.
1893                         this_thread::sleep_for(milliseconds(1));
1894                 }
1895         } while (sync_status == GL_TIMEOUT_EXPIRED);
1896         assert(sync_status != GL_WAIT_FAILED);
1897
1898         ReceivedTimestamps received_ts = find_received_timestamp(frame.input_frames);
1899         static int frameno = 0;
1900         print_latency("Current mixer latency (video inputs → ready for encode):",
1901                 received_ts, false, &frameno, &mixer_latency_histogram);
1902
1903         // Release back any input frames we needed to render this frame.
1904         frame.input_frames.clear();
1905
1906         GLSurface *surf;
1907         {
1908                 lock_guard<mutex> lock(storage_task_queue_mutex);
1909                 surf = surface_for_frame[display_frame_num];
1910                 assert(surf != nullptr);
1911         }
1912         uint8_t *data = reinterpret_cast<uint8_t *>(surf->y_ptr);
1913         if (http_encoder != nullptr) {
1914                 http_encoder->add_frame(pts, duration, frame.ycbcr_coefficients, data, received_ts);
1915         } if (disk_encoder != nullptr && disk_encoder != http_encoder) {
1916                 disk_encoder->add_frame(pts, duration, frame.ycbcr_coefficients, data, received_ts);
1917         }
1918
1919         if (v4l_output != nullptr) {
1920                 v4l_output->send_frame(data);
1921         }
1922 }
1923
1924 void QuickSyncEncoderImpl::encode_frame(QuickSyncEncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
1925                                         int frame_type, int64_t pts, int64_t dts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients)
1926 {
1927         const ReceivedTimestamps received_ts = find_received_timestamp(frame.input_frames);
1928
1929         GLSurface *surf;
1930         {
1931                 lock_guard<mutex> lock(storage_task_queue_mutex);
1932                 surf = surface_for_frame[display_frame_num];
1933                 assert(surf != nullptr);
1934         }
1935         VAStatus va_status;
1936
1937         if (use_zerocopy) {
1938                 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
1939                 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
1940                 va_status = vaReleaseBufferHandle(va_dpy->va_dpy, surf->surface_image.buf);
1941                 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
1942         } else {
1943                 // Upload the frame to VA-API.
1944                 unsigned char *surface_p = nullptr;
1945                 vaMapBuffer(va_dpy->va_dpy, surf->surface_image.buf, (void **)&surface_p);
1946
1947                 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
1948                 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
1949
1950                 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
1951                 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
1952
1953                 va_status = vaUnmapBuffer(va_dpy->va_dpy, surf->surface_image.buf);
1954                 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
1955         }
1956
1957         va_status = vaDestroyImage(va_dpy->va_dpy, surf->surface_image.image_id);
1958         CHECK_VASTATUS(va_status, "vaDestroyImage");
1959
1960         // Schedule the frame for encoding.
1961         VASurfaceID va_surface = surf->src_surface;
1962         va_status = vaBeginPicture(va_dpy->va_dpy, context_id, va_surface);
1963         CHECK_VASTATUS(va_status, "vaBeginPicture");
1964
1965         if (frame_type == FRAME_IDR) {
1966                 // FIXME: If the mux wants global headers, we should not put the
1967                 // SPS/PPS before each IDR frame, but rather put it into the
1968                 // codec extradata (formatted differently?).
1969                 //
1970                 // NOTE: If we change ycbcr_coefficients, it will not take effect
1971                 // before the next IDR frame. This is acceptable, as it should only
1972                 // happen on a mode change, which is rare.
1973                 render_sequence();
1974                 render_picture(surf, frame_type, display_frame_num, gop_start_display_frame_num);
1975                 if (h264_packedheader) {
1976                         render_packedsequence(ycbcr_coefficients);
1977                         render_packedpicture();
1978                 }
1979         } else {
1980                 //render_sequence();
1981                 render_picture(surf, frame_type, display_frame_num, gop_start_display_frame_num);
1982         }
1983         render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
1984
1985         va_status = vaEndPicture(va_dpy->va_dpy, context_id);
1986         CHECK_VASTATUS(va_status, "vaEndPicture");
1987
1988         update_ReferenceFrames(display_frame_num, frame_type);
1989
1990         vector<size_t> ref_display_frame_numbers;
1991
1992         // Lock the references for this frame; otherwise, they could be
1993         // rendered to before this frame is done encoding.
1994         {
1995                 lock_guard<mutex> lock(storage_task_queue_mutex);
1996                 for (const ReferenceFrame &frame : reference_frames) {
1997                         assert(surface_for_frame.count(frame.display_number));
1998                         ++surface_for_frame[frame.display_number]->refcount;
1999                         ref_display_frame_numbers.push_back(frame.display_number);
2000                 }
2001         }
2002
2003         // so now the data is done encoding (well, async job kicked off)...
2004         // we send that to the storage thread
2005         storage_task tmp;
2006         tmp.display_order = display_frame_num;
2007         tmp.frame_type = frame_type;
2008         tmp.pts = pts;
2009         tmp.dts = dts;
2010         tmp.duration = duration;
2011         tmp.ycbcr_coefficients = ycbcr_coefficients;
2012         tmp.received_ts = received_ts;
2013         tmp.ref_display_frame_numbers = move(ref_display_frame_numbers);
2014         storage_task_enqueue(move(tmp));
2015 }
2016
2017 // Proxy object.
2018 QuickSyncEncoder::QuickSyncEncoder(const std::string &filename, ResourcePool *resource_pool, QSurface *surface, const string &va_display, int width, int height, const AVOutputFormat *oformat, VideoCodecInterface *http_encoder, VideoCodecInterface *disk_encoder, DiskSpaceEstimator *disk_space_estimator)
2019         : impl(new QuickSyncEncoderImpl(filename, resource_pool, surface, va_display, width, height, oformat, http_encoder, disk_encoder, disk_space_estimator)) {}
2020
2021 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2022 QuickSyncEncoder::~QuickSyncEncoder() {}
2023
2024 void QuickSyncEncoder::add_audio(int64_t pts, vector<float> audio)
2025 {
2026         impl->add_audio(pts, audio);
2027 }
2028
2029 bool QuickSyncEncoder::is_zerocopy() const
2030 {
2031         return impl->is_zerocopy();
2032 }
2033
2034 bool QuickSyncEncoder::begin_frame(int64_t pts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex)
2035 {
2036         return impl->begin_frame(pts, duration, ycbcr_coefficients, input_frames, y_tex, cbcr_tex);
2037 }
2038
2039 RefCountedGLsync QuickSyncEncoder::end_frame()
2040 {
2041         return impl->end_frame();
2042 }
2043
2044 void QuickSyncEncoder::shutdown()
2045 {
2046         impl->shutdown();
2047 }
2048
2049 void QuickSyncEncoder::close_file()
2050 {
2051         impl->shutdown();
2052 }
2053
2054 void QuickSyncEncoder::set_http_mux(Mux *mux)
2055 {
2056         impl->set_http_mux(mux);
2057 }
2058
2059 void QuickSyncEncoder::set_srt_mux(Mux *mux)
2060 {
2061         impl->set_srt_mux(mux);
2062 }
2063
2064 int64_t QuickSyncEncoder::global_delay() const {
2065         return impl->global_delay();
2066 }
2067
2068 string QuickSyncEncoder::get_usable_va_display()
2069 {
2070         // Reduce the amount of chatter while probing,
2071         // unless the user has specified otherwise.
2072         bool need_env_reset = false;
2073         if (getenv("LIBVA_MESSAGING_LEVEL") == nullptr) {
2074                 setenv("LIBVA_MESSAGING_LEVEL", "0", true);
2075                 need_env_reset = true;
2076         }
2077
2078         // First try the default (ie., whatever $DISPLAY is set to).
2079         unique_ptr<VADisplayWithCleanup> va_dpy = try_open_va_h264("", nullptr, nullptr);
2080         if (va_dpy != nullptr) {
2081                 if (need_env_reset) {
2082                         unsetenv("LIBVA_MESSAGING_LEVEL");
2083                 }
2084                 return "";
2085         }
2086
2087         fprintf(stderr, "No --va-display was given, and the X11 display did not expose a VA-API H.264 encoder.\n");
2088
2089         // Try all /dev/dri/render* in turn. TODO: Accept /dev/dri/card*, too?
2090         glob_t g;
2091         int err = glob("/dev/dri/renderD*", 0, nullptr, &g);
2092         if (err != 0) {
2093                 fprintf(stderr, "Couldn't list render nodes (%s) when trying to autodetect a replacement.\n", strerror(errno));
2094         } else {
2095                 for (size_t i = 0; i < g.gl_pathc; ++i) {
2096                         string path = g.gl_pathv[i];
2097                         va_dpy = try_open_va_h264(path, nullptr, nullptr);
2098                         if (va_dpy != nullptr) {
2099                                 fprintf(stderr, "Autodetected %s as a suitable replacement; using it.\n",
2100                                         path.c_str());
2101                                 globfree(&g);
2102                                 if (need_env_reset) {
2103                                         unsetenv("LIBVA_MESSAGING_LEVEL");
2104                                 }
2105                                 return path;
2106                         }
2107                 }
2108         }
2109
2110         fprintf(stderr, "No suitable VA-API H.264 encoders were found in /dev/dri; giving up.\n");
2111         fprintf(stderr, "Note that if you are using an Intel CPU with an external GPU,\n");
2112         fprintf(stderr, "you may need to enable the integrated Intel GPU in your BIOS\n");
2113         fprintf(stderr, "to expose Quick Sync. Alternatively, you can use --record-x264-video\n");
2114         fprintf(stderr, "to use software instead of hardware H.264 encoding, at the expense\n");
2115         fprintf(stderr, "of increased CPU usage and possibly bit rate.\n");
2116         abort();
2117 }