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

   1 #include "quicksync_encoder.h"
   2
   3 #include <movit/image_format.h>
   4 #include <movit/resource_pool.h>  // Must be above the Xlib includes.
   5 #include <movit/util.h>
   6
   7 #include <EGL/eglplatform.h>
   8 #include <X11/Xlib.h>
   9 #include <assert.h>
  10 #include <epoxy/egl.h>
  11 #include <fcntl.h>
  12 #include <pthread.h>
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <unistd.h>
  17 #include <va/va.h>
  18 #include <va/va_drm.h>
  19 #include <va/va_drmcommon.h>
  20 #include <va/va_enc_h264.h>
  21 #include <va/va_x11.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 <stack>
  33 #include <string>
  34 #include <thread>
  35 #include <utility>
  36
  37 extern "C" {
  38
  39 #include <libavcodec/avcodec.h>
  40 #include <libavformat/avio.h>
  41 #include <libavutil/error.h>
  42 #include <libdrm/drm_fourcc.h>
  43
  44 }  // namespace
  45
  46 #include "audio_encoder.h"
  47 #include "context.h"
  48 #include "defs.h"
  49 #include "disk_space_estimator.h"
  50 #include "ffmpeg_raii.h"
  51 #include "flags.h"
  52 #include "mux.h"
  53 #include "print_latency.h"
  54 #include "quicksync_encoder_impl.h"
  55 #include "ref_counted_frame.h"
  56 #include "timebase.h"
  57 #include "x264_encoder.h"
  58
  59 using namespace movit;
  60 using namespace std;
  61 using namespace std::chrono;
  62 using namespace std::placeholders;
  63
  64 class QOpenGLContext;
  65 class QSurface;
  66
  67 namespace {
  68
  69 // These need to survive several QuickSyncEncoderImpl instances,
  70 // so they are outside.
  71 once_flag quick_sync_metrics_inited;
  72 LatencyHistogram mixer_latency_histogram, qs_latency_histogram;
  73 MuxMetrics current_file_mux_metrics, total_mux_metrics;
  74 std::atomic<double> metric_current_file_start_time_seconds{0.0 / 0.0};
  75 std::atomic<int64_t> metric_quick_sync_stalled_frames{0};
  76
  77 }  // namespace
  78
  79 #define CHECK_VASTATUS(va_status, func)                                 \
  80     if (va_status != VA_STATUS_SUCCESS) {                               \
  81         fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
  82         exit(1);                                                        \
  83     }
  84
  85 #undef BUFFER_OFFSET
  86 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
  87
  88 //#include "loadsurface.h"
  89
  90 #define NAL_REF_IDC_NONE        0
  91 #define NAL_REF_IDC_LOW         1
  92 #define NAL_REF_IDC_MEDIUM      2
  93 #define NAL_REF_IDC_HIGH        3
  94
  95 #define NAL_NON_IDR             1
  96 #define NAL_IDR                 5
  97 #define NAL_SPS                 7
  98 #define NAL_PPS                 8
  99 #define NAL_SEI                 6
 100
 101 #define SLICE_TYPE_P            0
 102 #define SLICE_TYPE_B            1
 103 #define SLICE_TYPE_I            2
 104 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
 105 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
 106 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
 107
 108
 109 #define ENTROPY_MODE_CAVLC      0
 110 #define ENTROPY_MODE_CABAC      1
 111
 112 #define PROFILE_IDC_BASELINE    66
 113 #define PROFILE_IDC_MAIN        77
 114 #define PROFILE_IDC_HIGH        100
 115
 116 #define BITSTREAM_ALLOCATE_STEPPING     4096
 117
 118 static constexpr unsigned int MaxFrameNum = (2<<16);
 119 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
 120 static constexpr unsigned int Log2MaxFrameNum = 16;
 121 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
 122
 123 using namespace std;
 124
 125 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
 126 // but if we don't delete it here, we get leaks. The GStreamer implementation
 127 // does the same.
 128 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
 129 {
 130     VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
 131     CHECK_VASTATUS(va_status, "vaRenderPicture");
 132
 133     for (int i = 0; i < num_buffers; ++i) {
 134         va_status = vaDestroyBuffer(dpy, buffers[i]);
 135         CHECK_VASTATUS(va_status, "vaDestroyBuffer");
 136     }
 137 }
 138
 139 static unsigned int
 140 va_swap32(unsigned int val)
 141 {
 142     unsigned char *pval = (unsigned char *)&val;
 143
 144     return ((pval[0] << 24)     |
 145             (pval[1] << 16)     |
 146             (pval[2] << 8)      |
 147             (pval[3] << 0));
 148 }
 149
 150 static void
 151 bitstream_start(bitstream *bs)
 152 {
 153     bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
 154     bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
 155     bs->bit_offset = 0;
 156 }
 157
 158 static void
 159 bitstream_end(bitstream *bs)
 160 {
 161     int pos = (bs->bit_offset >> 5);
 162     int bit_offset = (bs->bit_offset & 0x1f);
 163     int bit_left = 32 - bit_offset;
 164
 165     if (bit_offset) {
 166         bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
 167     }
 168 }
 169
 170 static void
 171 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
 172 {
 173     int pos = (bs->bit_offset >> 5);
 174     int bit_offset = (bs->bit_offset & 0x1f);
 175     int bit_left = 32 - bit_offset;
 176
 177     if (!size_in_bits)
 178         return;
 179
 180     bs->bit_offset += size_in_bits;
 181
 182     if (bit_left > size_in_bits) {
 183         bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
 184     } else {
 185         size_in_bits -= bit_left;
 186         if (bit_left >= 32) {
 187             bs->buffer[pos] = (val >> size_in_bits);
 188         } else {
 189             bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
 190         }
 191         bs->buffer[pos] = va_swap32(bs->buffer[pos]);
 192
 193         if (pos + 1 == bs->max_size_in_dword) {
 194             bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
 195             bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
 196         }
 197
 198         bs->buffer[pos + 1] = val;
 199     }
 200 }
 201
 202 static void
 203 bitstream_put_ue(bitstream *bs, unsigned int val)
 204 {
 205     int size_in_bits = 0;
 206     int tmp_val = ++val;
 207
 208     while (tmp_val) {
 209         tmp_val >>= 1;
 210         size_in_bits++;
 211     }
 212
 213     bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
 214     bitstream_put_ui(bs, val, size_in_bits);
 215 }
 216
 217 static void
 218 bitstream_put_se(bitstream *bs, int val)
 219 {
 220     unsigned int new_val;
 221
 222     if (val <= 0)
 223         new_val = -2 * val;
 224     else
 225         new_val = 2 * val - 1;
 226
 227     bitstream_put_ue(bs, new_val);
 228 }
 229
 230 static void
 231 bitstream_byte_aligning(bitstream *bs, int bit)
 232 {
 233     int bit_offset = (bs->bit_offset & 0x7);
 234     int bit_left = 8 - bit_offset;
 235     int new_val;
 236
 237     if (!bit_offset)
 238         return;
 239
 240     assert(bit == 0 || bit == 1);
 241
 242     if (bit)
 243         new_val = (1 << bit_left) - 1;
 244     else
 245         new_val = 0;
 246
 247     bitstream_put_ui(bs, new_val, bit_left);
 248 }
 249
 250 static void
 251 rbsp_trailing_bits(bitstream *bs)
 252 {
 253     bitstream_put_ui(bs, 1, 1);
 254     bitstream_byte_aligning(bs, 0);
 255 }
 256
 257 static void nal_start_code_prefix(bitstream *bs)
 258 {
 259     bitstream_put_ui(bs, 0x00000001, 32);
 260 }
 261
 262 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
 263 {
 264     bitstream_put_ui(bs, 0, 1);                /* forbidden_zero_bit: 0 */
 265     bitstream_put_ui(bs, nal_ref_idc, 2);
 266     bitstream_put_ui(bs, nal_unit_type, 5);
 267 }
 268
 269 void QuickSyncEncoderImpl::sps_rbsp(YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs)
 270 {
 271     int profile_idc = PROFILE_IDC_BASELINE;
 272
 273     if (h264_profile  == VAProfileH264High)
 274         profile_idc = PROFILE_IDC_HIGH;
 275     else if (h264_profile  == VAProfileH264Main)
 276         profile_idc = PROFILE_IDC_MAIN;
 277
 278     bitstream_put_ui(bs, profile_idc, 8);               /* profile_idc */
 279     bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1);                         /* constraint_set0_flag */
 280     bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1);                         /* constraint_set1_flag */
 281     bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1);                         /* constraint_set2_flag */
 282     bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1);                         /* constraint_set3_flag */
 283     bitstream_put_ui(bs, 0, 4);                         /* reserved_zero_4bits */
 284     bitstream_put_ui(bs, seq_param.level_idc, 8);      /* level_idc */
 285     bitstream_put_ue(bs, seq_param.seq_parameter_set_id);      /* seq_parameter_set_id */
 286
 287     if ( profile_idc == PROFILE_IDC_HIGH) {
 288         bitstream_put_ue(bs, 1);        /* chroma_format_idc = 1, 4:2:0 */
 289         bitstream_put_ue(bs, 0);        /* bit_depth_luma_minus8 */
 290         bitstream_put_ue(bs, 0);        /* bit_depth_chroma_minus8 */
 291         bitstream_put_ui(bs, 0, 1);     /* qpprime_y_zero_transform_bypass_flag */
 292         bitstream_put_ui(bs, 0, 1);     /* seq_scaling_matrix_present_flag */
 293     }
 294
 295     bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
 296     bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type);        /* pic_order_cnt_type */
 297
 298     if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
 299         bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4);     /* log2_max_pic_order_cnt_lsb_minus4 */
 300     else {
 301         assert(0);
 302     }
 303
 304     bitstream_put_ue(bs, seq_param.max_num_ref_frames);        /* num_ref_frames */
 305     bitstream_put_ui(bs, 0, 1);                                 /* gaps_in_frame_num_value_allowed_flag */
 306
 307     bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1);  /* pic_width_in_mbs_minus1 */
 308     bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
 309     bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1);    /* frame_mbs_only_flag */
 310
 311     if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
 312         assert(0);
 313     }
 314
 315     bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1);      /* direct_8x8_inference_flag */
 316     bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1);            /* frame_cropping_flag */
 317
 318     if (seq_param.frame_cropping_flag) {
 319         bitstream_put_ue(bs, seq_param.frame_crop_left_offset);        /* frame_crop_left_offset */
 320         bitstream_put_ue(bs, seq_param.frame_crop_right_offset);       /* frame_crop_right_offset */
 321         bitstream_put_ue(bs, seq_param.frame_crop_top_offset);         /* frame_crop_top_offset */
 322         bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset);      /* frame_crop_bottom_offset */
 323     }
 324
 325     //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
 326     if ( false ) {
 327         bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
 328     } else {
 329         // See H.264 annex E for the definition of this header.
 330         bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
 331         bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
 332         bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
 333         bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
 334         {
 335             bitstream_put_ui(bs, 5, 3);  /* video_format (5 = Unspecified) */
 336             bitstream_put_ui(bs, 0, 1);  /* video_full_range_flag */
 337             bitstream_put_ui(bs, 1, 1);  /* colour_description_present_flag */
 338             {
 339                 bitstream_put_ui(bs, 1, 8);  /* colour_primaries (1 = BT.709) */
 340                 bitstream_put_ui(bs, 13, 8);  /* transfer_characteristics (13 = sRGB) */
 341                 if (ycbcr_coefficients == YCBCR_REC_709) {
 342                     bitstream_put_ui(bs, 1, 8);  /* matrix_coefficients (1 = BT.709) */
 343                 } else {
 344                     assert(ycbcr_coefficients == YCBCR_REC_601);
 345                     bitstream_put_ui(bs, 6, 8);  /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
 346                 }
 347             }
 348         }
 349         bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
 350         bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
 351         {
 352             bitstream_put_ui(bs, 1, 32);  // FPS
 353             bitstream_put_ui(bs, TIMEBASE * 2, 32);  // FPS
 354             bitstream_put_ui(bs, 1, 1);
 355         }
 356         bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
 357         {
 358             // hrd_parameters
 359             bitstream_put_ue(bs, 0);    /* cpb_cnt_minus1 */
 360             bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
 361             bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
 362
 363             bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
 364             bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
 365             bitstream_put_ui(bs, 1, 1);  /* cbr_flag[0] */
 366
 367             bitstream_put_ui(bs, 23, 5);   /* initial_cpb_removal_delay_length_minus1 */
 368             bitstream_put_ui(bs, 23, 5);   /* cpb_removal_delay_length_minus1 */
 369             bitstream_put_ui(bs, 23, 5);   /* dpb_output_delay_length_minus1 */
 370             bitstream_put_ui(bs, 23, 5);   /* time_offset_length  */
 371         }
 372         bitstream_put_ui(bs, 0, 1);   /* vcl_hrd_parameters_present_flag */
 373         bitstream_put_ui(bs, 0, 1);   /* low_delay_hrd_flag */
 374
 375         bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
 376         bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
 377     }
 378
 379     rbsp_trailing_bits(bs);     /* rbsp_trailing_bits */
 380 }
 381
 382
 383 void QuickSyncEncoderImpl::pps_rbsp(bitstream *bs)
 384 {
 385     bitstream_put_ue(bs, pic_param.pic_parameter_set_id);      /* pic_parameter_set_id */
 386     bitstream_put_ue(bs, pic_param.seq_parameter_set_id);      /* seq_parameter_set_id */
 387
 388     bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1);  /* entropy_coding_mode_flag */
 389
 390     bitstream_put_ui(bs, 0, 1);                         /* pic_order_present_flag: 0 */
 391
 392     bitstream_put_ue(bs, 0);                            /* num_slice_groups_minus1 */
 393
 394     bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1);      /* num_ref_idx_l0_active_minus1 */
 395     bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1);      /* num_ref_idx_l1_active_minus1 1 */
 396
 397     bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1);     /* weighted_pred_flag: 0 */
 398     bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2);     /* weighted_bipred_idc: 0 */
 399
 400     bitstream_put_se(bs, pic_param.pic_init_qp - 26);  /* pic_init_qp_minus26 */
 401     bitstream_put_se(bs, 0);                            /* pic_init_qs_minus26 */
 402     bitstream_put_se(bs, 0);                            /* chroma_qp_index_offset */
 403
 404     bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
 405     bitstream_put_ui(bs, 0, 1);                         /* constrained_intra_pred_flag */
 406     bitstream_put_ui(bs, 0, 1);                         /* redundant_pic_cnt_present_flag */
 407
 408     /* more_rbsp_data */
 409     bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1);    /*transform_8x8_mode_flag */
 410     bitstream_put_ui(bs, 0, 1);                         /* pic_scaling_matrix_present_flag */
 411     bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset );    /*second_chroma_qp_index_offset */
 412
 413     rbsp_trailing_bits(bs);
 414 }
 415
 416 void QuickSyncEncoderImpl::slice_header(bitstream *bs)
 417 {
 418     int first_mb_in_slice = slice_param.macroblock_address;
 419
 420     bitstream_put_ue(bs, first_mb_in_slice);        /* first_mb_in_slice: 0 */
 421     bitstream_put_ue(bs, slice_param.slice_type);   /* slice_type */
 422     bitstream_put_ue(bs, slice_param.pic_parameter_set_id);        /* pic_parameter_set_id: 0 */
 423     bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
 424
 425     /* frame_mbs_only_flag == 1 */
 426     if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
 427         /* FIXME: */
 428         assert(0);
 429     }
 430
 431     if (pic_param.pic_fields.bits.idr_pic_flag)
 432         bitstream_put_ue(bs, slice_param.idr_pic_id);           /* idr_pic_id: 0 */
 433
 434     if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
 435         bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
 436         /* pic_order_present_flag == 0 */
 437     } else {
 438         /* FIXME: */
 439         assert(0);
 440     }
 441
 442     /* redundant_pic_cnt_present_flag == 0 */
 443     /* slice type */
 444     if (IS_P_SLICE(slice_param.slice_type)) {
 445         bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1);            /* num_ref_idx_active_override_flag: */
 446
 447         if (slice_param.num_ref_idx_active_override_flag)
 448             bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
 449
 450         /* ref_pic_list_reordering */
 451         bitstream_put_ui(bs, 0, 1);            /* ref_pic_list_reordering_flag_l0: 0 */
 452     } else if (IS_B_SLICE(slice_param.slice_type)) {
 453         bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1);            /* direct_spatial_mv_pred: 1 */
 454
 455         bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1);       /* num_ref_idx_active_override_flag: */
 456
 457         if (slice_param.num_ref_idx_active_override_flag) {
 458             bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
 459             bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
 460         }
 461
 462         /* ref_pic_list_reordering */
 463         bitstream_put_ui(bs, 0, 1);            /* ref_pic_list_reordering_flag_l0: 0 */
 464         bitstream_put_ui(bs, 0, 1);            /* ref_pic_list_reordering_flag_l1: 0 */
 465     }
 466
 467     if ((pic_param.pic_fields.bits.weighted_pred_flag &&
 468          IS_P_SLICE(slice_param.slice_type)) ||
 469         ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
 470          IS_B_SLICE(slice_param.slice_type))) {
 471         /* FIXME: fill weight/offset table */
 472         assert(0);
 473     }
 474
 475     /* dec_ref_pic_marking */
 476     if (pic_param.pic_fields.bits.reference_pic_flag) {     /* nal_ref_idc != 0 */
 477         unsigned char no_output_of_prior_pics_flag = 0;
 478         unsigned char long_term_reference_flag = 0;
 479         unsigned char adaptive_ref_pic_marking_mode_flag = 0;
 480
 481         if (pic_param.pic_fields.bits.idr_pic_flag) {
 482             bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1);            /* no_output_of_prior_pics_flag: 0 */
 483             bitstream_put_ui(bs, long_term_reference_flag, 1);            /* long_term_reference_flag: 0 */
 484         } else {
 485             bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1);            /* adaptive_ref_pic_marking_mode_flag: 0 */
 486         }
 487     }
 488
 489     if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
 490         !IS_I_SLICE(slice_param.slice_type))
 491         bitstream_put_ue(bs, slice_param.cabac_init_idc);               /* cabac_init_idc: 0 */
 492
 493     bitstream_put_se(bs, slice_param.slice_qp_delta);                   /* slice_qp_delta: 0 */
 494
 495     /* ignore for SP/SI */
 496
 497     if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
 498         bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc);           /* disable_deblocking_filter_idc: 0 */
 499
 500         if (slice_param.disable_deblocking_filter_idc != 1) {
 501             bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2);          /* slice_alpha_c0_offset_div2: 2 */
 502             bitstream_put_se(bs, slice_param.slice_beta_offset_div2);              /* slice_beta_offset_div2: 2 */
 503         }
 504     }
 505
 506     if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
 507         bitstream_byte_aligning(bs, 1);
 508     }
 509 }
 510
 511 int QuickSyncEncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
 512 {
 513     bitstream bs;
 514
 515     bitstream_start(&bs);
 516     nal_start_code_prefix(&bs);
 517     nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
 518     pps_rbsp(&bs);
 519     bitstream_end(&bs);
 520
 521     *header_buffer = (unsigned char *)bs.buffer;
 522     return bs.bit_offset;
 523 }
 524
 525 int
 526 QuickSyncEncoderImpl::build_packed_seq_buffer(YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer)
 527 {
 528     bitstream bs;
 529
 530     bitstream_start(&bs);
 531     nal_start_code_prefix(&bs);
 532     nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
 533     sps_rbsp(ycbcr_coefficients, &bs);
 534     bitstream_end(&bs);
 535
 536     *header_buffer = (unsigned char *)bs.buffer;
 537     return bs.bit_offset;
 538 }
 539
 540 int QuickSyncEncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
 541 {
 542     bitstream bs;
 543     int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
 544     int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
 545
 546     bitstream_start(&bs);
 547     nal_start_code_prefix(&bs);
 548
 549     if (IS_I_SLICE(slice_param.slice_type)) {
 550         nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
 551     } else if (IS_P_SLICE(slice_param.slice_type)) {
 552         nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
 553     } else {
 554         assert(IS_B_SLICE(slice_param.slice_type));
 555         nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
 556     }
 557
 558     slice_header(&bs);
 559     bitstream_end(&bs);
 560
 561     *header_buffer = (unsigned char *)bs.buffer;
 562     return bs.bit_offset;
 563 }
 564
 565
 566 /*
 567   Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
 568   1) period between Frame #X and Frame #N = #X - #N
 569   2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
 570   3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
 571   4) intra_period and intra_idr_period take precedence over ip_period
 572   5) if ip_period > 1, intra_period and intra_idr_period are not  the strict periods
 573      of I/IDR frames, see bellow examples
 574   -------------------------------------------------------------------
 575   intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
 576   0            ignored          1          IDRPPPPPPP ...     (No IDR/I any more)
 577   0            ignored        >=2          IDR(PBB)(PBB)...   (No IDR/I any more)
 578   1            0                ignored    IDRIIIIIII...      (No IDR any more)
 579   1            1                ignored    IDR IDR IDR IDR...
 580   1            >=2              ignored    IDRII IDRII IDR... (1/3/ignore)
 581   >=2          0                1          IDRPPP IPPP I...   (3/0/1)
 582   >=2          0              >=2          IDR(PBB)(PBB)(IBB) (6/0/3)
 583                                               (PBB)(IBB)(PBB)(IBB)...
 584   >=2          >=2              1          IDRPPPPP IPPPPP IPPPPP (6/18/1)
 585                                            IDRPPPPP IPPPPP IPPPPP...
 586   >=2          >=2              >=2        {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
 587                                            {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
 588                                            {IDR(PBB)(PBB)(IBB)(PBB)}           (6/12/3)
 589                                            {IDR(PBB)(PBB)(IBB)(PBB)}...
 590                                            {IDR(PBB)(PBB)}                     (6/6/3)
 591                                            {IDR(PBB)(PBB)}.
 592 */
 593
 594 // General pts/dts strategy:
 595 //
 596 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
 597 // bit tricky. We assume first of all that the frame rate never goes _above_
 598 // MAX_FPS, which gives us a frame period N. The decoder can always decode
 599 // in at least this speed, as long at dts <= pts (the frame is not attempted
 600 // presented before it is decoded). Furthermore, we never have longer chains of
 601 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
 602 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
 603 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
 604 // frame, with an order O <= C.)
 605 //
 606 // Many strategies are possible, but we establish these rules:
 607 //
 608 //  - Tip frames have dts = pts - (C-O)*N.
 609 //  - Non-tip frames have dts = dts_last + N.
 610 //
 611 // An example, with C=2 and N=10 and the data flow showed with arrows:
 612 //
 613 //        I  B  P  B  B  P
 614 //   pts: 30 40 50 60 70 80
 615 //        ↓  ↓     ↓
 616 //   dts: 10 30 20 60 50←40
 617 //         |  |  ↑        ↑
 618 //         `--|--'        |
 619 //             `----------'
 620 //
 621 // To show that this works fine also with irregular spacings, let's say that
 622 // the third frame is delayed a bit (something earlier was dropped). Now the
 623 // situation looks like this:
 624 //
 625 //        I  B  P  B  B   P
 626 //   pts: 30 40 80 90 100 110
 627 //        ↓  ↓     ↓
 628 //   dts: 10 30 20 90 50←40
 629 //         |  |  ↑        ↑
 630 //         `--|--'        |
 631 //             `----------'
 632 //
 633 // The resetting on every tip frame makes sure dts never ends up lagging a lot
 634 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
 635 //
 636 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
 637 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
 638 // a tip frame and should be given a dts based on the previous one.
 639 #define FRAME_P 0
 640 #define FRAME_B 1
 641 #define FRAME_I 2
 642 #define FRAME_IDR 7
 643 void encoding2display_order(
 644     int encoding_order, int intra_period,
 645     int intra_idr_period, int ip_period,
 646     int *displaying_order,
 647     int *frame_type, int *pts_lag)
 648 {
 649     int encoding_order_gop = 0;
 650
 651     *pts_lag = 0;
 652
 653     if (intra_period == 1) { /* all are I/IDR frames */
 654         *displaying_order = encoding_order;
 655         if (intra_idr_period == 0)
 656             *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
 657         else
 658             *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
 659         return;
 660     }
 661
 662     if (intra_period == 0)
 663         intra_idr_period = 0;
 664
 665     if (ip_period == 1) {
 666         // No B-frames, sequence is like IDR PPPPP IPPPPP.
 667         encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
 668         *displaying_order = encoding_order;
 669
 670         if (encoding_order_gop == 0) { /* the first frame */
 671             *frame_type = FRAME_IDR;
 672         } else if (intra_period != 0 && /* have I frames */
 673                    encoding_order_gop >= 2 &&
 674                    (encoding_order_gop % intra_period == 0)) {
 675             *frame_type = FRAME_I;
 676         } else {
 677             *frame_type = FRAME_P;
 678         }
 679         return;
 680     }
 681
 682     // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
 683     encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
 684     *pts_lag = -1;  // Most frames are not tip frames.
 685
 686     if (encoding_order_gop == 0) { /* the first frame */
 687         *frame_type = FRAME_IDR;
 688         *displaying_order = encoding_order;
 689         // IDR frames are a special case; I honestly can't find the logic behind
 690         // why this is the right thing, but it seems to line up nicely in practice :-)
 691         *pts_lag = TIMEBASE / MAX_FPS;
 692     } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
 693         *frame_type = FRAME_B;
 694         *displaying_order = encoding_order - 1;
 695         if ((encoding_order_gop % ip_period) == 0) {
 696             *pts_lag = 0;  // Last B-frame.
 697         }
 698     } else if (intra_period != 0 && /* have I frames */
 699                encoding_order_gop >= 2 &&
 700                ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
 701         *frame_type = FRAME_I;
 702         *displaying_order = encoding_order + ip_period - 1;
 703     } else {
 704         *frame_type = FRAME_P;
 705         *displaying_order = encoding_order + ip_period - 1;
 706     }
 707 }
 708
 709
 710 void QuickSyncEncoderImpl::enable_zerocopy_if_possible()
 711 {
 712         if (global_flags.x264_video_to_disk) {
 713                 // Quick Sync is entirely disabled.
 714                 use_zerocopy = false;
 715         } else if (global_flags.uncompressed_video_to_http) {
 716                 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --http-uncompressed-video.\n");
 717                 use_zerocopy = false;
 718         } else if (global_flags.x264_video_to_http) {
 719                 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --http-x264-video.\n");
 720                 use_zerocopy = false;
 721         } else {
 722                 use_zerocopy = true;
 723         }
 724         global_flags.use_zerocopy = use_zerocopy;
 725 }
 726
 727 VADisplay QuickSyncEncoderImpl::va_open_display(const string &va_display)
 728 {
 729         if (va_display.empty()) {
 730                 x11_display = XOpenDisplay(NULL);
 731                 if (!x11_display) {
 732                         fprintf(stderr, "error: can't connect to X server!\n");
 733                         return NULL;
 734                 }
 735                 return vaGetDisplay(x11_display);
 736         } else if (va_display[0] != '/') {
 737                 x11_display = XOpenDisplay(va_display.c_str());
 738                 if (!x11_display) {
 739                         fprintf(stderr, "error: can't connect to X server!\n");
 740                         return NULL;
 741                 }
 742                 return vaGetDisplay(x11_display);
 743         } else {
 744                 drm_fd = open(va_display.c_str(), O_RDWR);
 745                 if (drm_fd == -1) {
 746                         perror(va_display.c_str());
 747                         return NULL;
 748                 }
 749                 use_zerocopy = false;
 750                 return vaGetDisplayDRM(drm_fd);
 751         }
 752 }
 753
 754 void QuickSyncEncoderImpl::va_close_display(VADisplay va_dpy)
 755 {
 756         if (x11_display) {
 757                 XCloseDisplay(x11_display);
 758                 x11_display = nullptr;
 759         }
 760         if (drm_fd != -1) {
 761                 close(drm_fd);
 762         }
 763 }
 764
 765 int QuickSyncEncoderImpl::init_va(const string &va_display)
 766 {
 767     VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264ConstrainedBaseline};
 768     VAEntrypoint *entrypoints;
 769     int num_entrypoints, slice_entrypoint;
 770     int support_encode = 0;
 771     int major_ver, minor_ver;
 772     VAStatus va_status;
 773     unsigned int i;
 774
 775     va_dpy = va_open_display(va_display);
 776     va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
 777     CHECK_VASTATUS(va_status, "vaInitialize");
 778
 779     num_entrypoints = vaMaxNumEntrypoints(va_dpy);
 780     entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
 781     if (!entrypoints) {
 782         fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
 783         exit(1);
 784     }
 785
 786     /* use the highest profile */
 787     for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
 788         if ((h264_profile != ~0) && h264_profile != profile_list[i])
 789             continue;
 790
 791         h264_profile = profile_list[i];
 792         vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
 793         for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
 794             if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
 795                 support_encode = 1;
 796                 break;
 797             }
 798         }
 799         if (support_encode == 1)
 800             break;
 801     }
 802
 803     if (support_encode == 0) {
 804         printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
 805         printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
 806         printf("to use VA-API against DRM instead of X11.\n");
 807         exit(1);
 808     } else {
 809         switch (h264_profile) {
 810             case VAProfileH264ConstrainedBaseline:
 811                 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
 812                 ip_period = 1;
 813                 break;
 814
 815             case VAProfileH264Main:
 816                 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
 817                 break;
 818
 819             case VAProfileH264High:
 820                 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
 821                 break;
 822             default:
 823                 h264_profile = VAProfileH264ConstrainedBaseline;
 824                 ip_period = 1;
 825                 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
 826                 break;
 827         }
 828     }
 829
 830     VAConfigAttrib attrib[VAConfigAttribTypeMax];
 831
 832     /* find out the format for the render target, and rate control mode */
 833     for (i = 0; i < VAConfigAttribTypeMax; i++)
 834         attrib[i].type = (VAConfigAttribType)i;
 835
 836     va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
 837                                       &attrib[0], VAConfigAttribTypeMax);
 838     CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
 839     /* check the interested configattrib */
 840     if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
 841         printf("Not find desired YUV420 RT format\n");
 842         exit(1);
 843     } else {
 844         config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
 845         config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
 846         config_attrib_num++;
 847     }
 848
 849     if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
 850         if (!(attrib[VAConfigAttribRateControl].value & VA_RC_CQP)) {
 851             fprintf(stderr, "ERROR: VA-API encoder does not support CQP mode.\n");
 852             exit(1);
 853         }
 854
 855         config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
 856         config_attrib[config_attrib_num].value = VA_RC_CQP;
 857         config_attrib_num++;
 858     }
 859
 860
 861     if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
 862         int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
 863
 864         h264_packedheader = 1;
 865         config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
 866         config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
 867
 868         if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
 869             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
 870         }
 871
 872         if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
 873             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
 874         }
 875
 876         if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
 877             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
 878         }
 879
 880         if (tmp & VA_ENC_PACKED_HEADER_MISC) {
 881             config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
 882         }
 883
 884         enc_packed_header_idx = config_attrib_num;
 885         config_attrib_num++;
 886     }
 887
 888     if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
 889         config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
 890         config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
 891         config_attrib_num++;
 892     }
 893
 894     if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
 895         h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
 896     }
 897
 898     free(entrypoints);
 899     return 0;
 900 }
 901
 902 int QuickSyncEncoderImpl::setup_encode()
 903 {
 904         if (!global_flags.x264_video_to_disk) {
 905                 VAStatus va_status;
 906                 VASurfaceID *tmp_surfaceid;
 907                 int codedbuf_size;
 908                 VASurfaceID src_surface[SURFACE_NUM];
 909                 VASurfaceID ref_surface[SURFACE_NUM];
 910
 911                 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
 912                                 &config_attrib[0], config_attrib_num, &config_id);
 913                 CHECK_VASTATUS(va_status, "vaCreateConfig");
 914
 915                 /* create source surfaces */
 916                 va_status = vaCreateSurfaces(va_dpy,
 917                                 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
 918                                 &src_surface[0], SURFACE_NUM,
 919                                 NULL, 0);
 920                 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
 921
 922                 /* create reference surfaces */
 923                 va_status = vaCreateSurfaces(va_dpy,
 924                                 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
 925                                 &ref_surface[0], SURFACE_NUM,
 926                                 NULL, 0);
 927                 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
 928
 929                 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
 930                 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
 931                 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
 932
 933                 for (int i = 0; i < SURFACE_NUM; i++) {
 934                         gl_surfaces[i].src_surface = src_surface[i];
 935                         gl_surfaces[i].ref_surface = ref_surface[i];
 936                 }
 937
 938                 /* Create a context for this encode pipe */
 939                 va_status = vaCreateContext(va_dpy, config_id,
 940                                 frame_width_mbaligned, frame_height_mbaligned,
 941                                 VA_PROGRESSIVE,
 942                                 tmp_surfaceid, 2 * SURFACE_NUM,
 943                                 &context_id);
 944                 CHECK_VASTATUS(va_status, "vaCreateContext");
 945                 free(tmp_surfaceid);
 946
 947                 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
 948
 949                 for (int i = 0; i < SURFACE_NUM; i++) {
 950                         /* create coded buffer once for all
 951                          * other VA buffers which won't be used again after vaRenderPicture.
 952                          * so APP can always vaCreateBuffer for every frame
 953                          * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
 954                          * so VA won't maintain the coded buffer
 955                          */
 956                         va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
 957                                         codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
 958                         CHECK_VASTATUS(va_status, "vaCreateBuffer");
 959                 }
 960         }
 961
 962         /* create OpenGL objects */
 963         for (int i = 0; i < SURFACE_NUM; i++) {
 964                 if (use_zerocopy) {
 965                         gl_surfaces[i].y_tex = resource_pool->create_2d_texture(GL_R8, 1, 1);
 966                         gl_surfaces[i].cbcr_tex = resource_pool->create_2d_texture(GL_RG8, 1, 1);
 967                 } else {
 968                         size_t bytes_per_pixel = (global_flags.x264_bit_depth > 8) ? 2 : 1;
 969
 970                         // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
 971                         // buffers, due to potentially differing pitch.
 972                         glGenBuffers(1, &gl_surfaces[i].pbo);
 973                         glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
 974                         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);
 975                         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);
 976                         gl_surfaces[i].y_offset = 0;
 977                         gl_surfaces[i].cbcr_offset = frame_width * frame_height * bytes_per_pixel;
 978                         gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
 979                         gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
 980                         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
 981                 }
 982         }
 983
 984         return 0;
 985 }
 986
 987 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
 988 //
 989 //   2 1 0 [3] 4 8 9
 990 template<class T, class C>
 991 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
 992 {
 993         T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
 994         sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
 995         sort(middle, end, less_than);
 996 }
 997
 998 void QuickSyncEncoderImpl::update_ReferenceFrames(int current_display_frame, int frame_type)
 999 {
1000     if (frame_type == FRAME_B)
1001         return;
1002
1003     pic_param.CurrPic.frame_idx = current_ref_frame_num;
1004
1005     CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1006     unique_lock<mutex> lock(storage_task_queue_mutex);
1007
1008     // Insert the new frame at the start of the reference queue.
1009     reference_frames.push_front(ReferenceFrame{ CurrentCurrPic, current_display_frame });
1010
1011     if (reference_frames.size() > num_ref_frames)
1012     {
1013         // The back frame frame is no longer in use as a reference.
1014         int display_frame_num = reference_frames.back().display_number;
1015         assert(surface_for_frame.count(display_frame_num));
1016         release_gl_surface(display_frame_num);
1017         reference_frames.pop_back();
1018     }
1019
1020     // Mark this frame in use as a reference.
1021     assert(surface_for_frame.count(current_display_frame));
1022     ++surface_for_frame[current_display_frame]->refcount;
1023
1024     current_ref_frame_num++;
1025     if (current_ref_frame_num > MaxFrameNum)
1026         current_ref_frame_num = 0;
1027 }
1028
1029
1030 void QuickSyncEncoderImpl::update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2])
1031 {
1032     const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1033         return a.frame_idx > b.frame_idx;
1034     };
1035
1036     for (size_t i = 0; i < reference_frames.size(); ++i) {
1037         RefPicList0_P[i] = reference_frames[i].pic;
1038     }
1039     sort(&RefPicList0_P[0], &RefPicList0_P[reference_frames.size()], descending_by_frame_idx);
1040 }
1041
1042 void QuickSyncEncoderImpl::update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2])
1043 {
1044     const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1045         return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1046     };
1047     const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1048         return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1049     };
1050
1051     for (size_t i = 0; i < reference_frames.size(); ++i) {
1052         RefPicList0_B[i] = reference_frames[i].pic;
1053         RefPicList1_B[i] = reference_frames[i].pic;
1054     }
1055     sort_two(&RefPicList0_B[0], &RefPicList0_B[reference_frames.size()], CurrentCurrPic, ascending_by_top_field_order_cnt);
1056     sort_two(&RefPicList1_B[0], &RefPicList1_B[reference_frames.size()], CurrentCurrPic, descending_by_top_field_order_cnt);
1057 }
1058
1059
1060 int QuickSyncEncoderImpl::render_sequence()
1061 {
1062     VABufferID seq_param_buf, rc_param_buf, render_id[2];
1063     VAStatus va_status;
1064     VAEncMiscParameterBuffer *misc_param;
1065     VAEncMiscParameterRateControl *misc_rate_ctrl;
1066
1067     seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1068     seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1069     seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1070     seq_param.bits_per_second = frame_bitrate;
1071
1072     seq_param.intra_period = intra_period;
1073     seq_param.intra_idr_period = intra_idr_period;
1074     seq_param.ip_period = ip_period;
1075
1076     seq_param.max_num_ref_frames = num_ref_frames;
1077     seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1078     seq_param.time_scale = TIMEBASE * 2;
1079     seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1080     seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1081     seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1082     seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1083     seq_param.seq_fields.bits.chroma_format_idc = 1;
1084     seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1085
1086     if (frame_width != frame_width_mbaligned ||
1087         frame_height != frame_height_mbaligned) {
1088         seq_param.frame_cropping_flag = 1;
1089         seq_param.frame_crop_left_offset = 0;
1090         seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1091         seq_param.frame_crop_top_offset = 0;
1092         seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1093     }
1094
1095     va_status = vaCreateBuffer(va_dpy, context_id,
1096                                VAEncSequenceParameterBufferType,
1097                                sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1098     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1099
1100     va_status = vaCreateBuffer(va_dpy, context_id,
1101                                VAEncMiscParameterBufferType,
1102                                sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1103                                1, NULL, &rc_param_buf);
1104     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1105
1106     vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1107     misc_param->type = VAEncMiscParameterTypeRateControl;
1108     misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1109     memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1110     misc_rate_ctrl->bits_per_second = frame_bitrate;
1111     misc_rate_ctrl->target_percentage = 66;
1112     misc_rate_ctrl->window_size = 1000;
1113     misc_rate_ctrl->initial_qp = initial_qp;
1114     misc_rate_ctrl->min_qp = minimal_qp;
1115     misc_rate_ctrl->basic_unit_size = 0;
1116     vaUnmapBuffer(va_dpy, rc_param_buf);
1117
1118     render_id[0] = seq_param_buf;
1119     render_id[1] = rc_param_buf;
1120
1121     render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1122
1123     return 0;
1124 }
1125
1126 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1127 {
1128     static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1129     int prevPicOrderCntMsb, prevPicOrderCntLsb;
1130     int PicOrderCntMsb, TopFieldOrderCnt;
1131
1132     if (frame_type == FRAME_IDR)
1133         prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1134     else {
1135         prevPicOrderCntMsb = PicOrderCntMsb_ref;
1136         prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1137     }
1138
1139     if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1140         ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1141         PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1142     else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1143              ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1144         PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1145     else
1146         PicOrderCntMsb = prevPicOrderCntMsb;
1147
1148     TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1149
1150     if (frame_type != FRAME_B) {
1151         PicOrderCntMsb_ref = PicOrderCntMsb;
1152         pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1153     }
1154
1155     return TopFieldOrderCnt;
1156 }
1157
1158 int QuickSyncEncoderImpl::render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num)
1159 {
1160     VABufferID pic_param_buf;
1161     VAStatus va_status;
1162     size_t i = 0;
1163
1164     pic_param.CurrPic.picture_id = surf->ref_surface;
1165     pic_param.CurrPic.frame_idx = current_ref_frame_num;
1166     pic_param.CurrPic.flags = 0;
1167     pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1168     pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1169     CurrentCurrPic = pic_param.CurrPic;
1170
1171     for (i = 0; i < reference_frames.size(); i++) {
1172         pic_param.ReferenceFrames[i] = reference_frames[i].pic;
1173     }
1174     for (i = reference_frames.size(); i < MAX_NUM_REF1; i++) {
1175         pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1176         pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1177     }
1178
1179     pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1180     pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1181     pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1182     pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1183     pic_param.frame_num = current_ref_frame_num;  // FIXME: is this correct?
1184     pic_param.coded_buf = surf->coded_buf;
1185     pic_param.last_picture = false;  // FIXME
1186     pic_param.pic_init_qp = initial_qp;
1187
1188     va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1189                                sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1190     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1191
1192     render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1193
1194     return 0;
1195 }
1196
1197 int QuickSyncEncoderImpl::render_packedsequence(YCbCrLumaCoefficients ycbcr_coefficients)
1198 {
1199     VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1200     VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1201     unsigned int length_in_bits;
1202     unsigned char *packedseq_buffer = NULL;
1203     VAStatus va_status;
1204
1205     length_in_bits = build_packed_seq_buffer(ycbcr_coefficients, &packedseq_buffer);
1206
1207     packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1208
1209     packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1210     packedheader_param_buffer.has_emulation_bytes = 0;
1211     va_status = vaCreateBuffer(va_dpy,
1212                                context_id,
1213                                VAEncPackedHeaderParameterBufferType,
1214                                sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1215                                &packedseq_para_bufid);
1216     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1217
1218     va_status = vaCreateBuffer(va_dpy,
1219                                context_id,
1220                                VAEncPackedHeaderDataBufferType,
1221                                (length_in_bits + 7) / 8, 1, packedseq_buffer,
1222                                &packedseq_data_bufid);
1223     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1224
1225     render_id[0] = packedseq_para_bufid;
1226     render_id[1] = packedseq_data_bufid;
1227     render_picture_and_delete(va_dpy, context_id, render_id, 2);
1228
1229     free(packedseq_buffer);
1230
1231     return 0;
1232 }
1233
1234
1235 int QuickSyncEncoderImpl::render_packedpicture()
1236 {
1237     VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1238     VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1239     unsigned int length_in_bits;
1240     unsigned char *packedpic_buffer = NULL;
1241     VAStatus va_status;
1242
1243     length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1244     packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1245     packedheader_param_buffer.bit_length = length_in_bits;
1246     packedheader_param_buffer.has_emulation_bytes = 0;
1247
1248     va_status = vaCreateBuffer(va_dpy,
1249                                context_id,
1250                                VAEncPackedHeaderParameterBufferType,
1251                                sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1252                                &packedpic_para_bufid);
1253     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1254
1255     va_status = vaCreateBuffer(va_dpy,
1256                                context_id,
1257                                VAEncPackedHeaderDataBufferType,
1258                                (length_in_bits + 7) / 8, 1, packedpic_buffer,
1259                                &packedpic_data_bufid);
1260     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1261
1262     render_id[0] = packedpic_para_bufid;
1263     render_id[1] = packedpic_data_bufid;
1264     render_picture_and_delete(va_dpy, context_id, render_id, 2);
1265
1266     free(packedpic_buffer);
1267
1268     return 0;
1269 }
1270
1271 void QuickSyncEncoderImpl::render_packedslice()
1272 {
1273     VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1274     VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1275     unsigned int length_in_bits;
1276     unsigned char *packedslice_buffer = NULL;
1277     VAStatus va_status;
1278
1279     length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1280     packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1281     packedheader_param_buffer.bit_length = length_in_bits;
1282     packedheader_param_buffer.has_emulation_bytes = 0;
1283
1284     va_status = vaCreateBuffer(va_dpy,
1285                                context_id,
1286                                VAEncPackedHeaderParameterBufferType,
1287                                sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1288                                &packedslice_para_bufid);
1289     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1290
1291     va_status = vaCreateBuffer(va_dpy,
1292                                context_id,
1293                                VAEncPackedHeaderDataBufferType,
1294                                (length_in_bits + 7) / 8, 1, packedslice_buffer,
1295                                &packedslice_data_bufid);
1296     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1297
1298     render_id[0] = packedslice_para_bufid;
1299     render_id[1] = packedslice_data_bufid;
1300     render_picture_and_delete(va_dpy, context_id, render_id, 2);
1301
1302     free(packedslice_buffer);
1303 }
1304
1305 int QuickSyncEncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1306 {
1307     VABufferID slice_param_buf;
1308     VAStatus va_status;
1309     int i;
1310
1311     /* one frame, one slice */
1312     slice_param.macroblock_address = 0;
1313     slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1314     slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1315     if (frame_type == FRAME_IDR) {
1316         if (encoding_frame_num != 0)
1317             ++slice_param.idr_pic_id;
1318     } else if (frame_type == FRAME_P) {
1319         VAPictureH264 RefPicList0_P[MAX_NUM_REF2];
1320         update_RefPicList_P(RefPicList0_P);
1321
1322         int refpiclist0_max = h264_maxref & 0xffff;
1323         memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1324
1325         for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1326             slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1327             slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1328         }
1329     } else if (frame_type == FRAME_B) {
1330         VAPictureH264 RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
1331         update_RefPicList_B(RefPicList0_B, RefPicList1_B);
1332
1333         int refpiclist0_max = h264_maxref & 0xffff;
1334         int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1335
1336         memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1337         for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1338             slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1339             slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1340         }
1341
1342         memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1343         for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1344             slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1345             slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1346         }
1347     }
1348
1349     slice_param.slice_alpha_c0_offset_div2 = 0;
1350     slice_param.slice_beta_offset_div2 = 0;
1351     slice_param.direct_spatial_mv_pred_flag = 1;
1352     slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1353
1354
1355     if (h264_packedheader &&
1356         config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1357         render_packedslice();
1358
1359     va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1360                                sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1361     CHECK_VASTATUS(va_status, "vaCreateBuffer");
1362
1363     render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1364
1365     return 0;
1366 }
1367
1368
1369
1370 void QuickSyncEncoderImpl::save_codeddata(GLSurface *surf, storage_task task)
1371 {
1372         VACodedBufferSegment *buf_list = NULL;
1373         VAStatus va_status;
1374
1375         string data;
1376
1377         va_status = vaMapBuffer(va_dpy, surf->coded_buf, (void **)(&buf_list));
1378         CHECK_VASTATUS(va_status, "vaMapBuffer");
1379         while (buf_list != NULL) {
1380                 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1381                 buf_list = (VACodedBufferSegment *) buf_list->next;
1382         }
1383         vaUnmapBuffer(va_dpy, surf->coded_buf);
1384
1385         static int frameno = 0;
1386         print_latency("Current Quick Sync latency (video inputs → disk mux):",
1387                 task.received_ts, (task.frame_type == FRAME_B), &frameno, &qs_latency_histogram);
1388
1389         {
1390                 // Add video.
1391                 AVPacket pkt;
1392                 memset(&pkt, 0, sizeof(pkt));
1393                 pkt.buf = nullptr;
1394                 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1395                 pkt.size = data.size();
1396                 pkt.stream_index = 0;
1397                 if (task.frame_type == FRAME_IDR) {
1398                         pkt.flags = AV_PKT_FLAG_KEY;
1399                 } else {
1400                         pkt.flags = 0;
1401                 }
1402                 pkt.duration = task.duration;
1403                 if (file_mux) {
1404                         file_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1405                 }
1406                 if (!global_flags.uncompressed_video_to_http &&
1407                     !global_flags.x264_video_to_http) {
1408                         stream_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1409                 }
1410         }
1411 }
1412
1413
1414 // this is weird. but it seems to put a new frame onto the queue
1415 void QuickSyncEncoderImpl::storage_task_enqueue(storage_task task)
1416 {
1417         unique_lock<mutex> lock(storage_task_queue_mutex);
1418         storage_task_queue.push(move(task));
1419         storage_task_queue_changed.notify_all();
1420 }
1421
1422 void QuickSyncEncoderImpl::storage_task_thread()
1423 {
1424         pthread_setname_np(pthread_self(), "QS_Storage");
1425         for ( ;; ) {
1426                 storage_task current;
1427                 GLSurface *surf;
1428                 {
1429                         // wait until there's an encoded frame
1430                         unique_lock<mutex> lock(storage_task_queue_mutex);
1431                         storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1432                         if (storage_thread_should_quit && storage_task_queue.empty()) return;
1433                         current = move(storage_task_queue.front());
1434                         storage_task_queue.pop();
1435                         surf = surface_for_frame[current.display_order];
1436                         assert(surf != nullptr);
1437                 }
1438
1439                 VAStatus va_status;
1440
1441                 size_t display_order = current.display_order;
1442                 vector<size_t> ref_display_frame_numbers = move(current.ref_display_frame_numbers);
1443
1444                 // waits for data, then saves it to disk.
1445                 va_status = vaSyncSurface(va_dpy, surf->src_surface);
1446                 CHECK_VASTATUS(va_status, "vaSyncSurface");
1447                 save_codeddata(surf, move(current));
1448
1449                 // Unlock the frame, and all its references.
1450                 {
1451                         unique_lock<mutex> lock(storage_task_queue_mutex);
1452                         release_gl_surface(display_order);
1453
1454                         for (size_t frame_num : ref_display_frame_numbers) {
1455                                 release_gl_surface(frame_num);
1456                         }
1457                 }
1458         }
1459 }
1460
1461 void QuickSyncEncoderImpl::release_encode()
1462 {
1463         for (unsigned i = 0; i < SURFACE_NUM; i++) {
1464                 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1465                 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1466                 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1467         }
1468
1469         vaDestroyContext(va_dpy, context_id);
1470         vaDestroyConfig(va_dpy, config_id);
1471 }
1472
1473 void QuickSyncEncoderImpl::release_gl_resources()
1474 {
1475         assert(is_shutdown);
1476         if (has_released_gl_resources) {
1477                 return;
1478         }
1479
1480         for (unsigned i = 0; i < SURFACE_NUM; i++) {
1481                 if (use_zerocopy) {
1482                         resource_pool->release_2d_texture(gl_surfaces[i].y_tex);
1483                         resource_pool->release_2d_texture(gl_surfaces[i].cbcr_tex);
1484                 } else {
1485                         glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1486                         glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1487                         glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1488                         glDeleteBuffers(1, &gl_surfaces[i].pbo);
1489                 }
1490         }
1491
1492         has_released_gl_resources = true;
1493 }
1494
1495 int QuickSyncEncoderImpl::deinit_va()
1496 {
1497     vaTerminate(va_dpy);
1498
1499     va_close_display(va_dpy);
1500
1501     return 0;
1502 }
1503
1504 QuickSyncEncoderImpl::QuickSyncEncoderImpl(const std::string &filename, ResourcePool *resource_pool, QSurface *surface, const string &va_display, int width, int height, AVOutputFormat *oformat, X264Encoder *x264_encoder, DiskSpaceEstimator *disk_space_estimator)
1505         : current_storage_frame(0), resource_pool(resource_pool), surface(surface), x264_encoder(x264_encoder), frame_width(width), frame_height(height), disk_space_estimator(disk_space_estimator)
1506 {
1507         file_audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, oformat));
1508         open_output_file(filename);
1509         file_audio_encoder->add_mux(file_mux.get());
1510
1511         frame_width_mbaligned = (frame_width + 15) & (~15);
1512         frame_height_mbaligned = (frame_height + 15) & (~15);
1513
1514         //print_input();
1515
1516         if (global_flags.x264_video_to_http || global_flags.x264_video_to_disk) {
1517                 assert(x264_encoder != nullptr);
1518         } else {
1519                 assert(x264_encoder == nullptr);
1520         }
1521
1522         enable_zerocopy_if_possible();
1523         if (!global_flags.x264_video_to_disk) {
1524                 init_va(va_display);
1525         }
1526         setup_encode();
1527
1528         if (!global_flags.x264_video_to_disk) {
1529                 memset(&seq_param, 0, sizeof(seq_param));
1530                 memset(&pic_param, 0, sizeof(pic_param));
1531                 memset(&slice_param, 0, sizeof(slice_param));
1532         }
1533
1534         call_once(quick_sync_metrics_inited, [](){
1535                 mixer_latency_histogram.init("mixer");
1536                 qs_latency_histogram.init("quick_sync");
1537                 current_file_mux_metrics.init({{ "destination", "current_file" }});
1538                 total_mux_metrics.init({{ "destination", "files_total" }});
1539                 global_metrics.add("current_file_start_time_seconds", &metric_current_file_start_time_seconds, Metrics::TYPE_GAUGE);
1540                 global_metrics.add("quick_sync_stalled_frames", &metric_quick_sync_stalled_frames);
1541         });
1542
1543         storage_thread = thread(&QuickSyncEncoderImpl::storage_task_thread, this);
1544
1545         encode_thread = thread([this]{
1546                 QOpenGLContext *context = create_context(this->surface);
1547                 eglBindAPI(EGL_OPENGL_API);
1548                 if (!make_current(context, this->surface)) {
1549                         printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1550                                 eglGetError());
1551                         exit(1);
1552                 }
1553                 encode_thread_func();
1554                 delete_context(context);
1555         });
1556 }
1557
1558 QuickSyncEncoderImpl::~QuickSyncEncoderImpl()
1559 {
1560         shutdown();
1561         release_gl_resources();
1562 }
1563
1564 QuickSyncEncoderImpl::GLSurface *QuickSyncEncoderImpl::allocate_gl_surface()
1565 {
1566         for (unsigned i = 0; i < SURFACE_NUM; ++i) {
1567                 if (gl_surfaces[i].refcount == 0) {
1568                         ++gl_surfaces[i].refcount;
1569                         return &gl_surfaces[i];
1570                 }
1571         }
1572         return nullptr;
1573 }
1574
1575 void QuickSyncEncoderImpl::release_gl_surface(size_t display_frame_num)
1576 {
1577         assert(surface_for_frame.count(display_frame_num));
1578         QuickSyncEncoderImpl::GLSurface *surf = surface_for_frame[display_frame_num];
1579         if (--surf->refcount == 0) {
1580                 assert(surface_for_frame.count(display_frame_num));
1581                 surface_for_frame.erase(display_frame_num);
1582                 storage_task_queue_changed.notify_all();
1583         }
1584 }
1585
1586 bool QuickSyncEncoderImpl::is_zerocopy() const
1587 {
1588         return use_zerocopy;
1589 }
1590
1591 bool QuickSyncEncoderImpl::begin_frame(int64_t pts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex)
1592 {
1593         assert(!is_shutdown);
1594         GLSurface *surf = nullptr;
1595         {
1596                 // Wait until this frame slot is done encoding.
1597                 unique_lock<mutex> lock(storage_task_queue_mutex);
1598                 surf = allocate_gl_surface();
1599                 if (surf == nullptr) {
1600                         fprintf(stderr, "Warning: No free slots for frame %d, rendering has to wait for H.264 encoder\n",
1601                                 current_storage_frame);
1602                         ++metric_quick_sync_stalled_frames;
1603                         storage_task_queue_changed.wait(lock, [this, &surf]{
1604                                 if (storage_thread_should_quit)
1605                                         return true;
1606                                 surf = allocate_gl_surface();
1607                                 return surf != nullptr;
1608                         });
1609                 }
1610                 if (storage_thread_should_quit) return false;
1611                 assert(surf != nullptr);
1612                 surface_for_frame[current_storage_frame] = surf;
1613         }
1614
1615         if (use_zerocopy) {
1616                 *y_tex = surf->y_tex;
1617                 *cbcr_tex = surf->cbcr_tex;
1618         } else {
1619                 surf->y_tex = *y_tex;
1620                 surf->cbcr_tex = *cbcr_tex;
1621         }
1622
1623         if (!global_flags.x264_video_to_disk) {
1624                 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
1625                 CHECK_VASTATUS(va_status, "vaDeriveImage");
1626
1627                 if (use_zerocopy) {
1628                         VABufferInfo buf_info;
1629                         buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME;  // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1630                         va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1631                         CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1632
1633                         // Create Y image.
1634                         surf->y_egl_image = EGL_NO_IMAGE_KHR;
1635                         EGLint y_attribs[] = {
1636                                 EGL_WIDTH, frame_width,
1637                                 EGL_HEIGHT, frame_height,
1638                                 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1639                                 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1640                                 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1641                                 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1642                                 EGL_NONE
1643                         };
1644
1645                         surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1646                         assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1647
1648                         // Associate Y image to a texture.
1649                         glBindTexture(GL_TEXTURE_2D, *y_tex);
1650                         glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1651
1652                         // Create CbCr image.
1653                         surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1654                         EGLint cbcr_attribs[] = {
1655                                 EGL_WIDTH, frame_width / 2,
1656                                 EGL_HEIGHT, frame_height / 2,
1657                                 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1658                                 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1659                                 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1660                                 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1661                                 EGL_NONE
1662                         };
1663
1664                         surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1665                         assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1666
1667                         // Associate CbCr image to a texture.
1668                         glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1669                         glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1670                 }
1671         }
1672
1673         current_video_frame = PendingFrame{ {}, input_frames, pts, duration, ycbcr_coefficients };
1674
1675         return true;
1676 }
1677
1678 void QuickSyncEncoderImpl::add_audio(int64_t pts, vector<float> audio)
1679 {
1680         lock_guard<mutex> lock(file_audio_encoder_mutex);
1681         assert(!is_shutdown);
1682         file_audio_encoder->encode_audio(audio, pts + global_delay());
1683 }
1684
1685 RefCountedGLsync QuickSyncEncoderImpl::end_frame()
1686 {
1687         assert(!is_shutdown);
1688
1689         if (!use_zerocopy) {
1690                 GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
1691                 GLSurface *surf;
1692                 {
1693                         unique_lock<mutex> lock(storage_task_queue_mutex);
1694                         surf = surface_for_frame[current_storage_frame];
1695                         assert(surf != nullptr);
1696                 }
1697
1698                 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1699                 check_error();
1700
1701                 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1702                 check_error();
1703
1704                 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1705                 check_error();
1706                 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, type, BUFFER_OFFSET(surf->y_offset));
1707                 check_error();
1708
1709                 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1710                 check_error();
1711                 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, type, BUFFER_OFFSET(surf->cbcr_offset));
1712                 check_error();
1713
1714                 // We don't own these; the caller does.
1715                 surf->y_tex = surf->cbcr_tex = 0;
1716
1717                 glBindTexture(GL_TEXTURE_2D, 0);
1718                 check_error();
1719                 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1720                 check_error();
1721
1722                 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1723                 check_error();
1724         }
1725
1726         RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1727         check_error();
1728         glFlush();  // Make the H.264 thread see the fence as soon as possible.
1729         check_error();
1730
1731         {
1732                 unique_lock<mutex> lock(frame_queue_mutex);
1733                 current_video_frame.fence = fence;
1734                 pending_video_frames.push(move(current_video_frame));
1735                 ++current_storage_frame;
1736         }
1737         frame_queue_nonempty.notify_all();
1738         return fence;
1739 }
1740
1741 void QuickSyncEncoderImpl::shutdown()
1742 {
1743         if (is_shutdown) {
1744                 return;
1745         }
1746
1747         {
1748                 unique_lock<mutex> lock(frame_queue_mutex);
1749                 encode_thread_should_quit = true;
1750                 frame_queue_nonempty.notify_all();
1751         }
1752         encode_thread.join();
1753         {
1754                 unique_lock<mutex> lock(storage_task_queue_mutex);
1755                 storage_thread_should_quit = true;
1756                 frame_queue_nonempty.notify_all();
1757                 storage_task_queue_changed.notify_all();
1758         }
1759         storage_thread.join();
1760
1761         // Encode any leftover audio in the queues, and also any delayed frames.
1762         {
1763                 lock_guard<mutex> lock(file_audio_encoder_mutex);
1764                 file_audio_encoder->encode_last_audio();
1765         }
1766
1767         if (!global_flags.x264_video_to_disk) {
1768                 release_encode();
1769                 deinit_va();
1770         }
1771         is_shutdown = true;
1772 }
1773
1774 void QuickSyncEncoderImpl::close_file()
1775 {
1776         file_mux.reset();
1777         metric_current_file_start_time_seconds = 0.0 / 0.0;
1778 }
1779
1780 void QuickSyncEncoderImpl::open_output_file(const std::string &filename)
1781 {
1782         AVFormatContext *avctx = avformat_alloc_context();
1783         avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL);
1784         assert(filename.size() < sizeof(avctx->filename) - 1);
1785         strcpy(avctx->filename, filename.c_str());
1786
1787         string url = "file:" + filename;
1788         int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
1789         if (ret < 0) {
1790                 char tmp[AV_ERROR_MAX_STRING_SIZE];
1791                 fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret));
1792                 exit(1);
1793         }
1794
1795         string video_extradata;  // FIXME: See other comment about global headers.
1796         if (global_flags.x264_video_to_disk) {
1797                 video_extradata = x264_encoder->get_global_headers();
1798         }
1799
1800         current_file_mux_metrics.reset();
1801
1802         {
1803                 lock_guard<mutex> lock(file_audio_encoder_mutex);
1804                 AVCodecParametersWithDeleter audio_codecpar = file_audio_encoder->get_codec_parameters();
1805                 file_mux.reset(new Mux(avctx, frame_width, frame_height, Mux::CODEC_H264, video_extradata, audio_codecpar.get(), TIMEBASE,
1806                         std::bind(&DiskSpaceEstimator::report_write, disk_space_estimator, filename, _1),
1807                         Mux::WRITE_BACKGROUND,
1808                         { &current_file_mux_metrics, &total_mux_metrics }));
1809         }
1810         metric_current_file_start_time_seconds = get_timestamp_for_metrics();
1811
1812         if (global_flags.x264_video_to_disk) {
1813                 x264_encoder->add_mux(file_mux.get());
1814         }
1815 }
1816
1817 void QuickSyncEncoderImpl::encode_thread_func()
1818 {
1819         pthread_setname_np(pthread_self(), "QS_Encode");
1820
1821         int64_t last_dts = -1;
1822         int gop_start_display_frame_num = 0;
1823         for (int display_frame_num = 0; ; ++display_frame_num) {
1824                 // Wait for the frame to be in the queue. Note that this only means
1825                 // we started rendering it.
1826                 PendingFrame frame;
1827                 {
1828                         unique_lock<mutex> lock(frame_queue_mutex);
1829                         frame_queue_nonempty.wait(lock, [this]{
1830                                 return encode_thread_should_quit || !pending_video_frames.empty();
1831                         });
1832                         if (encode_thread_should_quit && pending_video_frames.empty()) {
1833                                 // We may have queued frames left in the reorder buffer
1834                                 // that were supposed to be B-frames, but have no P-frame
1835                                 // to be encoded against. If so, encode them all as
1836                                 // P-frames instead. Note that this happens under the mutex,
1837                                 // but nobody else uses it at this point, since we're shutting down,
1838                                 // so there's no contention.
1839                                 encode_remaining_frames_as_p(quicksync_encoding_frame_num, gop_start_display_frame_num, last_dts);
1840                                 return;
1841                         } else {
1842                                 frame = move(pending_video_frames.front());
1843                                 pending_video_frames.pop();
1844                         }
1845                 }
1846
1847                 // Pass the frame on to x264 (or uncompressed to HTTP) as needed.
1848                 // Note that this implicitly waits for the frame to be done rendering.
1849                 pass_frame(frame, display_frame_num, frame.pts, frame.duration);
1850
1851                 if (global_flags.x264_video_to_disk) {
1852                         unique_lock<mutex> lock(storage_task_queue_mutex);
1853                         release_gl_surface(display_frame_num);
1854                         continue;
1855                 }
1856
1857                 reorder_buffer[display_frame_num] = move(frame);
1858
1859                 // Now encode as many QuickSync frames as we can using the frames we have available.
1860                 // (It could be zero, or it could be multiple.) FIXME: make a function.
1861                 for ( ;; ) {
1862                         int pts_lag;
1863                         int frame_type, quicksync_display_frame_num;
1864                         encoding2display_order(quicksync_encoding_frame_num, intra_period, intra_idr_period, ip_period,
1865                                                &quicksync_display_frame_num, &frame_type, &pts_lag);
1866                         if (!reorder_buffer.count(quicksync_display_frame_num)) {
1867                                 break;
1868                         }
1869                         frame = move(reorder_buffer[quicksync_display_frame_num]);
1870                         reorder_buffer.erase(quicksync_display_frame_num);
1871
1872                         if (frame_type == FRAME_IDR) {
1873                                 // Release any reference frames from the previous GOP.
1874                                 {
1875                                         unique_lock<mutex> lock(storage_task_queue_mutex);
1876                                         for (const ReferenceFrame &frame : reference_frames) {
1877                                                 release_gl_surface(frame.display_number);
1878                                         }
1879                                 }
1880                                 reference_frames.clear();
1881                                 current_ref_frame_num = 0;
1882                                 gop_start_display_frame_num = quicksync_display_frame_num;
1883                         }
1884
1885                         // Determine the dts of this frame.
1886                         int64_t dts;
1887                         if (pts_lag == -1) {
1888                                 assert(last_dts != -1);
1889                                 dts = last_dts + (TIMEBASE / MAX_FPS);
1890                         } else {
1891                                 dts = frame.pts - pts_lag;
1892                         }
1893                         last_dts = dts;
1894
1895                         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);
1896                         ++quicksync_encoding_frame_num;
1897                 }
1898         }
1899 }
1900
1901 void QuickSyncEncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1902 {
1903         if (reorder_buffer.empty()) {
1904                 return;
1905         }
1906
1907         for (auto &pending_frame : reorder_buffer) {
1908                 int display_frame_num = pending_frame.first;
1909                 assert(display_frame_num > 0);
1910                 PendingFrame frame = move(pending_frame.second);
1911                 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
1912                 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
1913                 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts, frame.duration, frame.ycbcr_coefficients);
1914                 last_dts = dts;
1915         }
1916 }
1917
1918 void QuickSyncEncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data)
1919 {
1920         AVPacket pkt;
1921         memset(&pkt, 0, sizeof(pkt));
1922         pkt.buf = nullptr;
1923         pkt.data = const_cast<uint8_t *>(data);
1924         pkt.size = frame_width * frame_height * 2;
1925         pkt.stream_index = 0;
1926         pkt.flags = AV_PKT_FLAG_KEY;
1927         pkt.duration = duration;
1928         stream_mux->add_packet(pkt, pts, pts);
1929 }
1930
1931 namespace {
1932
1933 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
1934 {
1935         if (src_width == dst_pitch) {
1936                 memcpy(dst, src, src_width * height);
1937         } else {
1938                 for (size_t y = 0; y < height; ++y) {
1939                         const uint8_t *sptr = src + y * src_width;
1940                         uint8_t *dptr = dst + y * dst_pitch;
1941                         memcpy(dptr, sptr, src_width);
1942                 }
1943         }
1944 }
1945
1946 }  // namespace
1947
1948 void QuickSyncEncoderImpl::pass_frame(QuickSyncEncoderImpl::PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration)
1949 {
1950         // Wait for the GPU to be done with the frame.
1951         GLenum sync_status;
1952         do {
1953                 sync_status = glClientWaitSync(frame.fence.get(), 0, 0);
1954                 check_error();
1955                 if (sync_status == GL_TIMEOUT_EXPIRED) {
1956                         // NVIDIA likes to busy-wait; yield instead.
1957                         this_thread::sleep_for(milliseconds(1));
1958                 }
1959         } while (sync_status == GL_TIMEOUT_EXPIRED);
1960         assert(sync_status != GL_WAIT_FAILED);
1961
1962         ReceivedTimestamps received_ts = find_received_timestamp(frame.input_frames);
1963         static int frameno = 0;
1964         print_latency("Current mixer latency (video inputs → ready for encode):",
1965                 received_ts, false, &frameno, &mixer_latency_histogram);
1966
1967         // Release back any input frames we needed to render this frame.
1968         frame.input_frames.clear();
1969
1970         GLSurface *surf;
1971         {
1972                 unique_lock<mutex> lock(storage_task_queue_mutex);
1973                 surf = surface_for_frame[display_frame_num];
1974                 assert(surf != nullptr);
1975         }
1976         uint8_t *data = reinterpret_cast<uint8_t *>(surf->y_ptr);
1977         if (global_flags.uncompressed_video_to_http) {
1978                 add_packet_for_uncompressed_frame(pts, duration, data);
1979         } else if (global_flags.x264_video_to_http || global_flags.x264_video_to_disk) {
1980                 x264_encoder->add_frame(pts, duration, frame.ycbcr_coefficients, data, received_ts);
1981         }
1982 }
1983
1984 void QuickSyncEncoderImpl::encode_frame(QuickSyncEncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
1985                                         int frame_type, int64_t pts, int64_t dts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients)
1986 {
1987         const ReceivedTimestamps received_ts = find_received_timestamp(frame.input_frames);
1988
1989         GLSurface *surf;
1990         {
1991                 unique_lock<mutex> lock(storage_task_queue_mutex);
1992                 surf = surface_for_frame[display_frame_num];
1993                 assert(surf != nullptr);
1994         }
1995         VAStatus va_status;
1996
1997         if (use_zerocopy) {
1998                 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
1999                 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
2000                 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
2001                 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
2002         } else {
2003                 // Upload the frame to VA-API.
2004                 unsigned char *surface_p = nullptr;
2005                 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
2006
2007                 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
2008                 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
2009
2010                 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
2011                 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
2012
2013                 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
2014                 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
2015         }
2016
2017         va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
2018         CHECK_VASTATUS(va_status, "vaDestroyImage");
2019
2020         // Schedule the frame for encoding.
2021         VASurfaceID va_surface = surf->src_surface;
2022         va_status = vaBeginPicture(va_dpy, context_id, va_surface);
2023         CHECK_VASTATUS(va_status, "vaBeginPicture");
2024
2025         if (frame_type == FRAME_IDR) {
2026                 // FIXME: If the mux wants global headers, we should not put the
2027                 // SPS/PPS before each IDR frame, but rather put it into the
2028                 // codec extradata (formatted differently?).
2029                 //
2030                 // NOTE: If we change ycbcr_coefficients, it will not take effect
2031                 // before the next IDR frame. This is acceptable, as it should only
2032                 // happen on a mode change, which is rare.
2033                 render_sequence();
2034                 render_picture(surf, frame_type, display_frame_num, gop_start_display_frame_num);
2035                 if (h264_packedheader) {
2036                         render_packedsequence(ycbcr_coefficients);
2037                         render_packedpicture();
2038                 }
2039         } else {
2040                 //render_sequence();
2041                 render_picture(surf, frame_type, display_frame_num, gop_start_display_frame_num);
2042         }
2043         render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2044
2045         va_status = vaEndPicture(va_dpy, context_id);
2046         CHECK_VASTATUS(va_status, "vaEndPicture");
2047
2048         update_ReferenceFrames(display_frame_num, frame_type);
2049
2050         vector<size_t> ref_display_frame_numbers;
2051
2052         // Lock the references for this frame; otherwise, they could be
2053         // rendered to before this frame is done encoding.
2054         {
2055                 unique_lock<mutex> lock(storage_task_queue_mutex);
2056                 for (const ReferenceFrame &frame : reference_frames) {
2057                         assert(surface_for_frame.count(frame.display_number));
2058                         ++surface_for_frame[frame.display_number]->refcount;
2059                         ref_display_frame_numbers.push_back(frame.display_number);
2060                 }
2061         }
2062
2063         // so now the data is done encoding (well, async job kicked off)...
2064         // we send that to the storage thread
2065         storage_task tmp;
2066         tmp.display_order = display_frame_num;
2067         tmp.frame_type = frame_type;
2068         tmp.pts = pts;
2069         tmp.dts = dts;
2070         tmp.duration = duration;
2071         tmp.ycbcr_coefficients = ycbcr_coefficients;
2072         tmp.received_ts = received_ts;
2073         tmp.ref_display_frame_numbers = move(ref_display_frame_numbers);
2074         storage_task_enqueue(move(tmp));
2075 }
2076
2077 // Proxy object.
2078 QuickSyncEncoder::QuickSyncEncoder(const std::string &filename, ResourcePool *resource_pool, QSurface *surface, const string &va_display, int width, int height, AVOutputFormat *oformat, X264Encoder *x264_encoder, DiskSpaceEstimator *disk_space_estimator)
2079         : impl(new QuickSyncEncoderImpl(filename, resource_pool, surface, va_display, width, height, oformat, x264_encoder, disk_space_estimator)) {}
2080
2081 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2082 QuickSyncEncoder::~QuickSyncEncoder() {}
2083
2084 void QuickSyncEncoder::add_audio(int64_t pts, vector<float> audio)
2085 {
2086         impl->add_audio(pts, audio);
2087 }
2088
2089 bool QuickSyncEncoder::is_zerocopy() const
2090 {
2091         return impl->is_zerocopy();
2092 }
2093
2094 bool QuickSyncEncoder::begin_frame(int64_t pts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex)
2095 {
2096         return impl->begin_frame(pts, duration, ycbcr_coefficients, input_frames, y_tex, cbcr_tex);
2097 }
2098
2099 RefCountedGLsync QuickSyncEncoder::end_frame()
2100 {
2101         return impl->end_frame();
2102 }
2103
2104 void QuickSyncEncoder::shutdown()
2105 {
2106         impl->shutdown();
2107 }
2108
2109 void QuickSyncEncoder::close_file()
2110 {
2111         impl->shutdown();
2112 }
2113
2114 void QuickSyncEncoder::set_stream_mux(Mux *mux)
2115 {
2116         impl->set_stream_mux(mux);
2117 }
2118
2119 int64_t QuickSyncEncoder::global_delay() const {
2120         return impl->global_delay();
2121 }