1 #include "quicksync_encoder.h"
3 #include <movit/image_format.h>
4 #include <movit/resource_pool.h> // Must be above the Xlib includes.
5 #include <movit/util.h>
7 #include <EGL/eglplatform.h>
10 #include <epoxy/egl.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>
24 #include <condition_variable>
39 #include <libavcodec/avcodec.h>
40 #include <libavformat/avio.h>
41 #include <libavutil/error.h>
42 #include <libdrm/drm_fourcc.h>
46 #include "audio_encoder.h"
49 #include "disk_space_estimator.h"
50 #include "ffmpeg_raii.h"
53 #include "print_latency.h"
54 #include "quicksync_encoder_impl.h"
55 #include "ref_counted_frame.h"
57 #include "x264_encoder.h"
59 using namespace movit;
61 using namespace std::chrono;
62 using namespace std::placeholders;
69 // These need to survive several QuickSyncEncoderImpl instances,
70 // so they are outside.
71 bool mux_metrics_inited = false;
72 LatencyHistogram mixer_latency_histogram, qs_latency_histogram;
76 #define CHECK_VASTATUS(va_status, func) \
77 if (va_status != VA_STATUS_SUCCESS) { \
78 fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
82 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
84 //#include "loadsurface.h"
86 #define NAL_REF_IDC_NONE 0
87 #define NAL_REF_IDC_LOW 1
88 #define NAL_REF_IDC_MEDIUM 2
89 #define NAL_REF_IDC_HIGH 3
97 #define SLICE_TYPE_P 0
98 #define SLICE_TYPE_B 1
99 #define SLICE_TYPE_I 2
100 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
101 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
102 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
105 #define ENTROPY_MODE_CAVLC 0
106 #define ENTROPY_MODE_CABAC 1
108 #define PROFILE_IDC_BASELINE 66
109 #define PROFILE_IDC_MAIN 77
110 #define PROFILE_IDC_HIGH 100
112 #define BITSTREAM_ALLOCATE_STEPPING 4096
114 static constexpr unsigned int MaxFrameNum = (2<<16);
115 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
116 static constexpr unsigned int Log2MaxFrameNum = 16;
117 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
118 static constexpr int rc_default_modes[] = { // Priority list of modes.
121 VA_RC_VBR_CONSTRAINED,
129 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
130 // but if we don't delete it here, we get leaks. The GStreamer implementation
132 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
134 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
135 CHECK_VASTATUS(va_status, "vaRenderPicture");
137 for (int i = 0; i < num_buffers; ++i) {
138 va_status = vaDestroyBuffer(dpy, buffers[i]);
139 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
144 va_swap32(unsigned int val)
146 unsigned char *pval = (unsigned char *)&val;
148 return ((pval[0] << 24) |
155 bitstream_start(bitstream *bs)
157 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
158 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
163 bitstream_end(bitstream *bs)
165 int pos = (bs->bit_offset >> 5);
166 int bit_offset = (bs->bit_offset & 0x1f);
167 int bit_left = 32 - bit_offset;
170 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
175 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
177 int pos = (bs->bit_offset >> 5);
178 int bit_offset = (bs->bit_offset & 0x1f);
179 int bit_left = 32 - bit_offset;
184 bs->bit_offset += size_in_bits;
186 if (bit_left > size_in_bits) {
187 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
189 size_in_bits -= bit_left;
190 if (bit_left >= 32) {
191 bs->buffer[pos] = (val >> size_in_bits);
193 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
195 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
197 if (pos + 1 == bs->max_size_in_dword) {
198 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
199 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
202 bs->buffer[pos + 1] = val;
207 bitstream_put_ue(bitstream *bs, unsigned int val)
209 int size_in_bits = 0;
217 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
218 bitstream_put_ui(bs, val, size_in_bits);
222 bitstream_put_se(bitstream *bs, int val)
224 unsigned int new_val;
229 new_val = 2 * val - 1;
231 bitstream_put_ue(bs, new_val);
235 bitstream_byte_aligning(bitstream *bs, int bit)
237 int bit_offset = (bs->bit_offset & 0x7);
238 int bit_left = 8 - bit_offset;
244 assert(bit == 0 || bit == 1);
247 new_val = (1 << bit_left) - 1;
251 bitstream_put_ui(bs, new_val, bit_left);
255 rbsp_trailing_bits(bitstream *bs)
257 bitstream_put_ui(bs, 1, 1);
258 bitstream_byte_aligning(bs, 0);
261 static void nal_start_code_prefix(bitstream *bs)
263 bitstream_put_ui(bs, 0x00000001, 32);
266 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
268 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
269 bitstream_put_ui(bs, nal_ref_idc, 2);
270 bitstream_put_ui(bs, nal_unit_type, 5);
273 void QuickSyncEncoderImpl::sps_rbsp(YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs)
275 int profile_idc = PROFILE_IDC_BASELINE;
277 if (h264_profile == VAProfileH264High)
278 profile_idc = PROFILE_IDC_HIGH;
279 else if (h264_profile == VAProfileH264Main)
280 profile_idc = PROFILE_IDC_MAIN;
282 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
283 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
284 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
285 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
286 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
287 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
288 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
289 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
291 if ( profile_idc == PROFILE_IDC_HIGH) {
292 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
293 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
294 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
295 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
296 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
299 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
300 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
302 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
303 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
308 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
309 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
311 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
312 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
313 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
315 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
319 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
320 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
322 if (seq_param.frame_cropping_flag) {
323 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
324 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
325 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
326 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
329 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
331 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
333 // See H.264 annex E for the definition of this header.
334 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
335 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
336 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
337 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
339 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
340 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
341 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
343 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
344 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
345 if (ycbcr_coefficients == YCBCR_REC_709) {
346 bitstream_put_ui(bs, 1, 8); /* matrix_coefficients (1 = BT.709) */
348 assert(ycbcr_coefficients == YCBCR_REC_601);
349 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
353 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
354 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
356 bitstream_put_ui(bs, 1, 32); // FPS
357 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
358 bitstream_put_ui(bs, 1, 1);
360 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
363 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
364 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
365 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
367 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
368 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
369 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
371 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
372 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
373 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
374 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
376 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
377 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
379 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
380 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
383 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
387 void QuickSyncEncoderImpl::pps_rbsp(bitstream *bs)
389 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
390 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
392 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
394 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
396 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
398 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
399 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
401 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
402 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
404 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
405 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
406 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
408 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
409 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
410 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
413 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
414 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
415 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
417 rbsp_trailing_bits(bs);
420 void QuickSyncEncoderImpl::slice_header(bitstream *bs)
422 int first_mb_in_slice = slice_param.macroblock_address;
424 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
425 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
426 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
427 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
429 /* frame_mbs_only_flag == 1 */
430 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
435 if (pic_param.pic_fields.bits.idr_pic_flag)
436 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
438 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
439 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
440 /* pic_order_present_flag == 0 */
446 /* redundant_pic_cnt_present_flag == 0 */
448 if (IS_P_SLICE(slice_param.slice_type)) {
449 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
451 if (slice_param.num_ref_idx_active_override_flag)
452 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
454 /* ref_pic_list_reordering */
455 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
456 } else if (IS_B_SLICE(slice_param.slice_type)) {
457 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
459 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
461 if (slice_param.num_ref_idx_active_override_flag) {
462 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
463 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
466 /* ref_pic_list_reordering */
467 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
468 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
471 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
472 IS_P_SLICE(slice_param.slice_type)) ||
473 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
474 IS_B_SLICE(slice_param.slice_type))) {
475 /* FIXME: fill weight/offset table */
479 /* dec_ref_pic_marking */
480 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
481 unsigned char no_output_of_prior_pics_flag = 0;
482 unsigned char long_term_reference_flag = 0;
483 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
485 if (pic_param.pic_fields.bits.idr_pic_flag) {
486 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
487 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
489 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
493 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
494 !IS_I_SLICE(slice_param.slice_type))
495 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
497 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
499 /* ignore for SP/SI */
501 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
502 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
504 if (slice_param.disable_deblocking_filter_idc != 1) {
505 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
506 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
510 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
511 bitstream_byte_aligning(bs, 1);
515 int QuickSyncEncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
519 bitstream_start(&bs);
520 nal_start_code_prefix(&bs);
521 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
525 *header_buffer = (unsigned char *)bs.buffer;
526 return bs.bit_offset;
530 QuickSyncEncoderImpl::build_packed_seq_buffer(YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer)
534 bitstream_start(&bs);
535 nal_start_code_prefix(&bs);
536 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
537 sps_rbsp(ycbcr_coefficients, &bs);
540 *header_buffer = (unsigned char *)bs.buffer;
541 return bs.bit_offset;
544 int QuickSyncEncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
547 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
548 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
550 bitstream_start(&bs);
551 nal_start_code_prefix(&bs);
553 if (IS_I_SLICE(slice_param.slice_type)) {
554 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
555 } else if (IS_P_SLICE(slice_param.slice_type)) {
556 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
558 assert(IS_B_SLICE(slice_param.slice_type));
559 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
565 *header_buffer = (unsigned char *)bs.buffer;
566 return bs.bit_offset;
571 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
572 1) period between Frame #X and Frame #N = #X - #N
573 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
574 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
575 4) intra_period and intra_idr_period take precedence over ip_period
576 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
577 of I/IDR frames, see bellow examples
578 -------------------------------------------------------------------
579 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
580 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
581 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
582 1 0 ignored IDRIIIIIII... (No IDR any more)
583 1 1 ignored IDR IDR IDR IDR...
584 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
585 >=2 0 1 IDRPPP IPPP I... (3/0/1)
586 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
587 (PBB)(IBB)(PBB)(IBB)...
588 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
589 IDRPPPPP IPPPPP IPPPPP...
590 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
591 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
592 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
593 {IDR(PBB)(PBB)(IBB)(PBB)}...
594 {IDR(PBB)(PBB)} (6/6/3)
598 // General pts/dts strategy:
600 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
601 // bit tricky. We assume first of all that the frame rate never goes _above_
602 // MAX_FPS, which gives us a frame period N. The decoder can always decode
603 // in at least this speed, as long at dts <= pts (the frame is not attempted
604 // presented before it is decoded). Furthermore, we never have longer chains of
605 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
606 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
607 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
608 // frame, with an order O <= C.)
610 // Many strategies are possible, but we establish these rules:
612 // - Tip frames have dts = pts - (C-O)*N.
613 // - Non-tip frames have dts = dts_last + N.
615 // An example, with C=2 and N=10 and the data flow showed with arrows:
618 // pts: 30 40 50 60 70 80
620 // dts: 10 30 20 60 50←40
625 // To show that this works fine also with irregular spacings, let's say that
626 // the third frame is delayed a bit (something earlier was dropped). Now the
627 // situation looks like this:
630 // pts: 30 40 80 90 100 110
632 // dts: 10 30 20 90 50←40
637 // The resetting on every tip frame makes sure dts never ends up lagging a lot
638 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
640 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
641 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
642 // a tip frame and should be given a dts based on the previous one.
647 void encoding2display_order(
648 int encoding_order, int intra_period,
649 int intra_idr_period, int ip_period,
650 int *displaying_order,
651 int *frame_type, int *pts_lag)
653 int encoding_order_gop = 0;
657 if (intra_period == 1) { /* all are I/IDR frames */
658 *displaying_order = encoding_order;
659 if (intra_idr_period == 0)
660 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
662 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
666 if (intra_period == 0)
667 intra_idr_period = 0;
669 if (ip_period == 1) {
670 // No B-frames, sequence is like IDR PPPPP IPPPPP.
671 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
672 *displaying_order = encoding_order;
674 if (encoding_order_gop == 0) { /* the first frame */
675 *frame_type = FRAME_IDR;
676 } else if (intra_period != 0 && /* have I frames */
677 encoding_order_gop >= 2 &&
678 (encoding_order_gop % intra_period == 0)) {
679 *frame_type = FRAME_I;
681 *frame_type = FRAME_P;
686 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
687 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
688 *pts_lag = -1; // Most frames are not tip frames.
690 if (encoding_order_gop == 0) { /* the first frame */
691 *frame_type = FRAME_IDR;
692 *displaying_order = encoding_order;
693 // IDR frames are a special case; I honestly can't find the logic behind
694 // why this is the right thing, but it seems to line up nicely in practice :-)
695 *pts_lag = TIMEBASE / MAX_FPS;
696 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
697 *frame_type = FRAME_B;
698 *displaying_order = encoding_order - 1;
699 if ((encoding_order_gop % ip_period) == 0) {
700 *pts_lag = 0; // Last B-frame.
702 } else if (intra_period != 0 && /* have I frames */
703 encoding_order_gop >= 2 &&
704 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
705 *frame_type = FRAME_I;
706 *displaying_order = encoding_order + ip_period - 1;
708 *frame_type = FRAME_P;
709 *displaying_order = encoding_order + ip_period - 1;
714 static const char *rc_to_string(int rc_mode)
727 case VA_RC_VBR_CONSTRAINED:
728 return "VBR_CONSTRAINED";
734 void QuickSyncEncoderImpl::enable_zerocopy_if_possible()
736 if (global_flags.x264_video_to_disk) {
737 // Quick Sync is entirely disabled.
738 use_zerocopy = false;
739 } else if (global_flags.uncompressed_video_to_http) {
740 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --http-uncompressed-video.\n");
741 use_zerocopy = false;
742 } else if (global_flags.x264_video_to_http) {
743 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --http-x264-video.\n");
744 use_zerocopy = false;
748 global_flags.use_zerocopy = use_zerocopy;
751 VADisplay QuickSyncEncoderImpl::va_open_display(const string &va_display)
753 if (va_display.empty()) {
754 x11_display = XOpenDisplay(NULL);
756 fprintf(stderr, "error: can't connect to X server!\n");
759 return vaGetDisplay(x11_display);
760 } else if (va_display[0] != '/') {
761 x11_display = XOpenDisplay(va_display.c_str());
763 fprintf(stderr, "error: can't connect to X server!\n");
766 return vaGetDisplay(x11_display);
768 drm_fd = open(va_display.c_str(), O_RDWR);
770 perror(va_display.c_str());
773 use_zerocopy = false;
774 return vaGetDisplayDRM(drm_fd);
778 void QuickSyncEncoderImpl::va_close_display(VADisplay va_dpy)
781 XCloseDisplay(x11_display);
782 x11_display = nullptr;
789 int QuickSyncEncoderImpl::init_va(const string &va_display)
791 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
792 VAEntrypoint *entrypoints;
793 int num_entrypoints, slice_entrypoint;
794 int support_encode = 0;
795 int major_ver, minor_ver;
799 va_dpy = va_open_display(va_display);
800 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
801 CHECK_VASTATUS(va_status, "vaInitialize");
803 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
804 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
806 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
810 /* use the highest profile */
811 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
812 if ((h264_profile != ~0) && h264_profile != profile_list[i])
815 h264_profile = profile_list[i];
816 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
817 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
818 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
823 if (support_encode == 1)
827 if (support_encode == 0) {
828 printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
829 printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
830 printf("to use VA-API against DRM instead of X11.\n");
833 switch (h264_profile) {
834 case VAProfileH264Baseline:
836 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
837 h264_entropy_mode = 0;
839 case VAProfileH264ConstrainedBaseline:
840 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
844 case VAProfileH264Main:
845 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
848 case VAProfileH264High:
849 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
852 h264_profile = VAProfileH264Baseline;
854 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
859 VAConfigAttrib attrib[VAConfigAttribTypeMax];
861 /* find out the format for the render target, and rate control mode */
862 for (i = 0; i < VAConfigAttribTypeMax; i++)
863 attrib[i].type = (VAConfigAttribType)i;
865 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
866 &attrib[0], VAConfigAttribTypeMax);
867 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
868 /* check the interested configattrib */
869 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
870 printf("Not find desired YUV420 RT format\n");
873 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
874 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
878 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
879 int tmp = attrib[VAConfigAttribRateControl].value;
881 if (rc_mode == -1 || !(rc_mode & tmp)) {
883 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
886 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
887 if (rc_default_modes[i] & tmp) {
888 rc_mode = rc_default_modes[i];
894 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
895 config_attrib[config_attrib_num].value = rc_mode;
900 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
901 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
903 h264_packedheader = 1;
904 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
905 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
907 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
908 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
911 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
912 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
915 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
916 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
919 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
920 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
923 enc_packed_header_idx = config_attrib_num;
927 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
928 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
929 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
933 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
934 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
941 int QuickSyncEncoderImpl::setup_encode()
943 if (!global_flags.x264_video_to_disk) {
945 VASurfaceID *tmp_surfaceid;
947 VASurfaceID src_surface[SURFACE_NUM];
948 VASurfaceID ref_surface[SURFACE_NUM];
950 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
951 &config_attrib[0], config_attrib_num, &config_id);
952 CHECK_VASTATUS(va_status, "vaCreateConfig");
954 /* create source surfaces */
955 va_status = vaCreateSurfaces(va_dpy,
956 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
957 &src_surface[0], SURFACE_NUM,
959 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
961 /* create reference surfaces */
962 va_status = vaCreateSurfaces(va_dpy,
963 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
964 &ref_surface[0], SURFACE_NUM,
966 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
968 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
969 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
970 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
972 for (int i = 0; i < SURFACE_NUM; i++) {
973 gl_surfaces[i].src_surface = src_surface[i];
974 gl_surfaces[i].ref_surface = ref_surface[i];
977 /* Create a context for this encode pipe */
978 va_status = vaCreateContext(va_dpy, config_id,
979 frame_width_mbaligned, frame_height_mbaligned,
981 tmp_surfaceid, 2 * SURFACE_NUM,
983 CHECK_VASTATUS(va_status, "vaCreateContext");
986 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
988 for (int i = 0; i < SURFACE_NUM; i++) {
989 /* create coded buffer once for all
990 * other VA buffers which won't be used again after vaRenderPicture.
991 * so APP can always vaCreateBuffer for every frame
992 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
993 * so VA won't maintain the coded buffer
995 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
996 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
997 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1001 /* create OpenGL objects */
1002 for (int i = 0; i < SURFACE_NUM; i++) {
1004 gl_surfaces[i].y_tex = resource_pool->create_2d_texture(GL_R8, 1, 1);
1005 gl_surfaces[i].cbcr_tex = resource_pool->create_2d_texture(GL_RG8, 1, 1);
1007 size_t bytes_per_pixel = (global_flags.x264_bit_depth > 8) ? 2 : 1;
1009 // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
1010 // buffers, due to potentially differing pitch.
1011 glGenBuffers(1, &gl_surfaces[i].pbo);
1012 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1013 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);
1014 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);
1015 gl_surfaces[i].y_offset = 0;
1016 gl_surfaces[i].cbcr_offset = frame_width * frame_height * bytes_per_pixel;
1017 gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
1018 gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
1019 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1026 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1029 template<class T, class C>
1030 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1032 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1033 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1034 sort(middle, end, less_than);
1037 void QuickSyncEncoderImpl::update_ReferenceFrames(int current_display_frame, int frame_type)
1039 if (frame_type == FRAME_B)
1042 pic_param.CurrPic.frame_idx = current_ref_frame_num;
1044 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1045 unique_lock<mutex> lock(storage_task_queue_mutex);
1047 // Insert the new frame at the start of the reference queue.
1048 reference_frames.push_front(ReferenceFrame{ CurrentCurrPic, current_display_frame });
1050 if (reference_frames.size() > num_ref_frames)
1052 // The back frame frame is no longer in use as a reference.
1053 int display_frame_num = reference_frames.back().display_number;
1054 assert(surface_for_frame.count(display_frame_num));
1055 release_gl_surface(display_frame_num);
1056 reference_frames.pop_back();
1059 // Mark this frame in use as a reference.
1060 assert(surface_for_frame.count(current_display_frame));
1061 ++surface_for_frame[current_display_frame]->refcount;
1063 current_ref_frame_num++;
1064 if (current_ref_frame_num > MaxFrameNum)
1065 current_ref_frame_num = 0;
1069 void QuickSyncEncoderImpl::update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2])
1071 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1072 return a.frame_idx > b.frame_idx;
1075 for (size_t i = 0; i < reference_frames.size(); ++i) {
1076 RefPicList0_P[i] = reference_frames[i].pic;
1078 sort(&RefPicList0_P[0], &RefPicList0_P[reference_frames.size()], descending_by_frame_idx);
1081 void QuickSyncEncoderImpl::update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2])
1083 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1084 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1086 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1087 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1090 for (size_t i = 0; i < reference_frames.size(); ++i) {
1091 RefPicList0_B[i] = reference_frames[i].pic;
1092 RefPicList1_B[i] = reference_frames[i].pic;
1094 sort_two(&RefPicList0_B[0], &RefPicList0_B[reference_frames.size()], CurrentCurrPic, ascending_by_top_field_order_cnt);
1095 sort_two(&RefPicList1_B[0], &RefPicList1_B[reference_frames.size()], CurrentCurrPic, descending_by_top_field_order_cnt);
1099 int QuickSyncEncoderImpl::render_sequence()
1101 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1103 VAEncMiscParameterBuffer *misc_param;
1104 VAEncMiscParameterRateControl *misc_rate_ctrl;
1106 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1107 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1108 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1109 seq_param.bits_per_second = frame_bitrate;
1111 seq_param.intra_period = intra_period;
1112 seq_param.intra_idr_period = intra_idr_period;
1113 seq_param.ip_period = ip_period;
1115 seq_param.max_num_ref_frames = num_ref_frames;
1116 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1117 seq_param.time_scale = TIMEBASE * 2;
1118 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1119 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1120 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1121 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1122 seq_param.seq_fields.bits.chroma_format_idc = 1;
1123 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1125 if (frame_width != frame_width_mbaligned ||
1126 frame_height != frame_height_mbaligned) {
1127 seq_param.frame_cropping_flag = 1;
1128 seq_param.frame_crop_left_offset = 0;
1129 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1130 seq_param.frame_crop_top_offset = 0;
1131 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1134 va_status = vaCreateBuffer(va_dpy, context_id,
1135 VAEncSequenceParameterBufferType,
1136 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1137 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1139 va_status = vaCreateBuffer(va_dpy, context_id,
1140 VAEncMiscParameterBufferType,
1141 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1142 1, NULL, &rc_param_buf);
1143 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1145 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1146 misc_param->type = VAEncMiscParameterTypeRateControl;
1147 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1148 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1149 misc_rate_ctrl->bits_per_second = frame_bitrate;
1150 misc_rate_ctrl->target_percentage = 66;
1151 misc_rate_ctrl->window_size = 1000;
1152 misc_rate_ctrl->initial_qp = initial_qp;
1153 misc_rate_ctrl->min_qp = minimal_qp;
1154 misc_rate_ctrl->basic_unit_size = 0;
1155 vaUnmapBuffer(va_dpy, rc_param_buf);
1157 render_id[0] = seq_param_buf;
1158 render_id[1] = rc_param_buf;
1160 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1165 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1167 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1168 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1169 int PicOrderCntMsb, TopFieldOrderCnt;
1171 if (frame_type == FRAME_IDR)
1172 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1174 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1175 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1178 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1179 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1180 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1181 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1182 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1183 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1185 PicOrderCntMsb = prevPicOrderCntMsb;
1187 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1189 if (frame_type != FRAME_B) {
1190 PicOrderCntMsb_ref = PicOrderCntMsb;
1191 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1194 return TopFieldOrderCnt;
1197 int QuickSyncEncoderImpl::render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num)
1199 VABufferID pic_param_buf;
1203 pic_param.CurrPic.picture_id = surf->ref_surface;
1204 pic_param.CurrPic.frame_idx = current_ref_frame_num;
1205 pic_param.CurrPic.flags = 0;
1206 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1207 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1208 CurrentCurrPic = pic_param.CurrPic;
1210 for (i = 0; i < reference_frames.size(); i++) {
1211 pic_param.ReferenceFrames[i] = reference_frames[i].pic;
1213 for (i = reference_frames.size(); i < MAX_NUM_REF1; i++) {
1214 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1215 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1218 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1219 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1220 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1221 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1222 pic_param.frame_num = current_ref_frame_num; // FIXME: is this correct?
1223 pic_param.coded_buf = surf->coded_buf;
1224 pic_param.last_picture = false; // FIXME
1225 pic_param.pic_init_qp = initial_qp;
1227 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1228 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1229 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1231 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1236 int QuickSyncEncoderImpl::render_packedsequence(YCbCrLumaCoefficients ycbcr_coefficients)
1238 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1239 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1240 unsigned int length_in_bits;
1241 unsigned char *packedseq_buffer = NULL;
1244 length_in_bits = build_packed_seq_buffer(ycbcr_coefficients, &packedseq_buffer);
1246 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1248 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1249 packedheader_param_buffer.has_emulation_bytes = 0;
1250 va_status = vaCreateBuffer(va_dpy,
1252 VAEncPackedHeaderParameterBufferType,
1253 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1254 &packedseq_para_bufid);
1255 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1257 va_status = vaCreateBuffer(va_dpy,
1259 VAEncPackedHeaderDataBufferType,
1260 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1261 &packedseq_data_bufid);
1262 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1264 render_id[0] = packedseq_para_bufid;
1265 render_id[1] = packedseq_data_bufid;
1266 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1268 free(packedseq_buffer);
1274 int QuickSyncEncoderImpl::render_packedpicture()
1276 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1277 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1278 unsigned int length_in_bits;
1279 unsigned char *packedpic_buffer = NULL;
1282 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1283 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1284 packedheader_param_buffer.bit_length = length_in_bits;
1285 packedheader_param_buffer.has_emulation_bytes = 0;
1287 va_status = vaCreateBuffer(va_dpy,
1289 VAEncPackedHeaderParameterBufferType,
1290 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1291 &packedpic_para_bufid);
1292 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1294 va_status = vaCreateBuffer(va_dpy,
1296 VAEncPackedHeaderDataBufferType,
1297 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1298 &packedpic_data_bufid);
1299 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1301 render_id[0] = packedpic_para_bufid;
1302 render_id[1] = packedpic_data_bufid;
1303 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1305 free(packedpic_buffer);
1310 void QuickSyncEncoderImpl::render_packedslice()
1312 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1313 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1314 unsigned int length_in_bits;
1315 unsigned char *packedslice_buffer = NULL;
1318 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1319 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1320 packedheader_param_buffer.bit_length = length_in_bits;
1321 packedheader_param_buffer.has_emulation_bytes = 0;
1323 va_status = vaCreateBuffer(va_dpy,
1325 VAEncPackedHeaderParameterBufferType,
1326 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1327 &packedslice_para_bufid);
1328 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1330 va_status = vaCreateBuffer(va_dpy,
1332 VAEncPackedHeaderDataBufferType,
1333 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1334 &packedslice_data_bufid);
1335 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1337 render_id[0] = packedslice_para_bufid;
1338 render_id[1] = packedslice_data_bufid;
1339 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1341 free(packedslice_buffer);
1344 int QuickSyncEncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1346 VABufferID slice_param_buf;
1350 /* one frame, one slice */
1351 slice_param.macroblock_address = 0;
1352 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1353 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1354 if (frame_type == FRAME_IDR) {
1355 if (encoding_frame_num != 0)
1356 ++slice_param.idr_pic_id;
1357 } else if (frame_type == FRAME_P) {
1358 VAPictureH264 RefPicList0_P[MAX_NUM_REF2];
1359 update_RefPicList_P(RefPicList0_P);
1361 int refpiclist0_max = h264_maxref & 0xffff;
1362 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1364 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1365 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1366 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1368 } else if (frame_type == FRAME_B) {
1369 VAPictureH264 RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
1370 update_RefPicList_B(RefPicList0_B, RefPicList1_B);
1372 int refpiclist0_max = h264_maxref & 0xffff;
1373 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1375 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1376 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1377 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1378 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1381 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1382 for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1383 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1384 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1388 slice_param.slice_alpha_c0_offset_div2 = 0;
1389 slice_param.slice_beta_offset_div2 = 0;
1390 slice_param.direct_spatial_mv_pred_flag = 1;
1391 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1394 if (h264_packedheader &&
1395 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1396 render_packedslice();
1398 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1399 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1400 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1402 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1409 void QuickSyncEncoderImpl::save_codeddata(GLSurface *surf, storage_task task)
1411 VACodedBufferSegment *buf_list = NULL;
1416 va_status = vaMapBuffer(va_dpy, surf->coded_buf, (void **)(&buf_list));
1417 CHECK_VASTATUS(va_status, "vaMapBuffer");
1418 while (buf_list != NULL) {
1419 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1420 buf_list = (VACodedBufferSegment *) buf_list->next;
1422 vaUnmapBuffer(va_dpy, surf->coded_buf);
1424 static int frameno = 0;
1425 print_latency("Current Quick Sync latency (video inputs → disk mux):",
1426 task.received_ts, (task.frame_type == FRAME_B), &frameno, &qs_latency_histogram);
1431 memset(&pkt, 0, sizeof(pkt));
1433 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1434 pkt.size = data.size();
1435 pkt.stream_index = 0;
1436 if (task.frame_type == FRAME_IDR) {
1437 pkt.flags = AV_PKT_FLAG_KEY;
1441 pkt.duration = task.duration;
1443 file_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1445 if (!global_flags.uncompressed_video_to_http &&
1446 !global_flags.x264_video_to_http) {
1447 stream_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1453 // this is weird. but it seems to put a new frame onto the queue
1454 void QuickSyncEncoderImpl::storage_task_enqueue(storage_task task)
1456 unique_lock<mutex> lock(storage_task_queue_mutex);
1457 storage_task_queue.push(move(task));
1458 storage_task_queue_changed.notify_all();
1461 void QuickSyncEncoderImpl::storage_task_thread()
1463 pthread_setname_np(pthread_self(), "QS_Storage");
1465 storage_task current;
1468 // wait until there's an encoded frame
1469 unique_lock<mutex> lock(storage_task_queue_mutex);
1470 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1471 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1472 current = move(storage_task_queue.front());
1473 storage_task_queue.pop();
1474 surf = surface_for_frame[current.display_order];
1475 assert(surf != nullptr);
1480 size_t display_order = current.display_order;
1481 vector<size_t> ref_display_frame_numbers = move(current.ref_display_frame_numbers);
1483 // waits for data, then saves it to disk.
1484 va_status = vaSyncSurface(va_dpy, surf->src_surface);
1485 CHECK_VASTATUS(va_status, "vaSyncSurface");
1486 save_codeddata(surf, move(current));
1488 // Unlock the frame, and all its references.
1490 unique_lock<mutex> lock(storage_task_queue_mutex);
1491 release_gl_surface(display_order);
1493 for (size_t frame_num : ref_display_frame_numbers) {
1494 release_gl_surface(frame_num);
1500 void QuickSyncEncoderImpl::release_encode()
1502 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1503 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1504 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1505 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1508 vaDestroyContext(va_dpy, context_id);
1509 vaDestroyConfig(va_dpy, config_id);
1512 void QuickSyncEncoderImpl::release_gl_resources()
1514 assert(is_shutdown);
1515 if (has_released_gl_resources) {
1519 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1521 resource_pool->release_2d_texture(gl_surfaces[i].y_tex);
1522 resource_pool->release_2d_texture(gl_surfaces[i].cbcr_tex);
1524 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1525 glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1526 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1527 glDeleteBuffers(1, &gl_surfaces[i].pbo);
1531 has_released_gl_resources = true;
1534 int QuickSyncEncoderImpl::deinit_va()
1536 vaTerminate(va_dpy);
1538 va_close_display(va_dpy);
1543 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)
1544 : 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)
1546 file_audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, oformat));
1547 open_output_file(filename);
1548 file_audio_encoder->add_mux(file_mux.get());
1550 frame_width_mbaligned = (frame_width + 15) & (~15);
1551 frame_height_mbaligned = (frame_height + 15) & (~15);
1555 if (global_flags.x264_video_to_http || global_flags.x264_video_to_disk) {
1556 assert(x264_encoder != nullptr);
1558 assert(x264_encoder == nullptr);
1561 enable_zerocopy_if_possible();
1562 if (!global_flags.x264_video_to_disk) {
1563 init_va(va_display);
1567 if (!global_flags.x264_video_to_disk) {
1568 memset(&seq_param, 0, sizeof(seq_param));
1569 memset(&pic_param, 0, sizeof(pic_param));
1570 memset(&slice_param, 0, sizeof(slice_param));
1573 if (!mux_metrics_inited) {
1574 mixer_latency_histogram.init("mixer");
1575 qs_latency_histogram.init("quick_sync");
1576 mux_metrics_inited = true;
1579 storage_thread = thread(&QuickSyncEncoderImpl::storage_task_thread, this);
1581 encode_thread = thread([this]{
1582 QOpenGLContext *context = create_context(this->surface);
1583 eglBindAPI(EGL_OPENGL_API);
1584 if (!make_current(context, this->surface)) {
1585 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1589 encode_thread_func();
1590 delete_context(context);
1594 QuickSyncEncoderImpl::~QuickSyncEncoderImpl()
1597 release_gl_resources();
1600 QuickSyncEncoderImpl::GLSurface *QuickSyncEncoderImpl::allocate_gl_surface()
1602 for (unsigned i = 0; i < SURFACE_NUM; ++i) {
1603 if (gl_surfaces[i].refcount == 0) {
1604 ++gl_surfaces[i].refcount;
1605 return &gl_surfaces[i];
1611 void QuickSyncEncoderImpl::release_gl_surface(size_t display_frame_num)
1613 assert(surface_for_frame.count(display_frame_num));
1614 QuickSyncEncoderImpl::GLSurface *surf = surface_for_frame[display_frame_num];
1615 if (--surf->refcount == 0) {
1616 assert(surface_for_frame.count(display_frame_num));
1617 surface_for_frame.erase(display_frame_num);
1618 storage_task_queue_changed.notify_all();
1622 bool QuickSyncEncoderImpl::is_zerocopy() const
1624 return use_zerocopy;
1627 bool QuickSyncEncoderImpl::begin_frame(int64_t pts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex)
1629 assert(!is_shutdown);
1630 GLSurface *surf = nullptr;
1632 // Wait until this frame slot is done encoding.
1633 unique_lock<mutex> lock(storage_task_queue_mutex);
1634 surf = allocate_gl_surface();
1635 if (surf == nullptr) {
1636 fprintf(stderr, "Warning: No free slots for frame %d, rendering has to wait for H.264 encoder\n",
1637 current_storage_frame);
1638 storage_task_queue_changed.wait(lock, [this, &surf]{
1639 if (storage_thread_should_quit)
1641 surf = allocate_gl_surface();
1642 return surf != nullptr;
1645 if (storage_thread_should_quit) return false;
1646 assert(surf != nullptr);
1647 surface_for_frame[current_storage_frame] = surf;
1651 *y_tex = surf->y_tex;
1652 *cbcr_tex = surf->cbcr_tex;
1654 surf->y_tex = *y_tex;
1655 surf->cbcr_tex = *cbcr_tex;
1658 if (!global_flags.x264_video_to_disk) {
1659 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
1660 CHECK_VASTATUS(va_status, "vaDeriveImage");
1663 VABufferInfo buf_info;
1664 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1665 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1666 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1669 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1670 EGLint y_attribs[] = {
1671 EGL_WIDTH, frame_width,
1672 EGL_HEIGHT, frame_height,
1673 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1674 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1675 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1676 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1680 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1681 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1683 // Associate Y image to a texture.
1684 glBindTexture(GL_TEXTURE_2D, *y_tex);
1685 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1687 // Create CbCr image.
1688 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1689 EGLint cbcr_attribs[] = {
1690 EGL_WIDTH, frame_width,
1691 EGL_HEIGHT, frame_height,
1692 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1693 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1694 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1695 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1699 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1700 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1702 // Associate CbCr image to a texture.
1703 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1704 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1708 current_video_frame = PendingFrame{ {}, input_frames, pts, duration, ycbcr_coefficients };
1713 void QuickSyncEncoderImpl::add_audio(int64_t pts, vector<float> audio)
1715 assert(!is_shutdown);
1716 file_audio_encoder->encode_audio(audio, pts + global_delay());
1719 RefCountedGLsync QuickSyncEncoderImpl::end_frame()
1721 assert(!is_shutdown);
1723 if (!use_zerocopy) {
1724 GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
1727 unique_lock<mutex> lock(storage_task_queue_mutex);
1728 surf = surface_for_frame[current_storage_frame];
1729 assert(surf != nullptr);
1732 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1735 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1738 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1740 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, type, BUFFER_OFFSET(surf->y_offset));
1743 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1745 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, type, BUFFER_OFFSET(surf->cbcr_offset));
1748 // We don't own these; the caller does.
1749 surf->y_tex = surf->cbcr_tex = 0;
1751 glBindTexture(GL_TEXTURE_2D, 0);
1753 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1756 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1760 RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1762 glFlush(); // Make the H.264 thread see the fence as soon as possible.
1766 unique_lock<mutex> lock(frame_queue_mutex);
1767 current_video_frame.fence = fence;
1768 pending_video_frames.push(move(current_video_frame));
1769 ++current_storage_frame;
1771 frame_queue_nonempty.notify_all();
1775 void QuickSyncEncoderImpl::shutdown()
1782 unique_lock<mutex> lock(frame_queue_mutex);
1783 encode_thread_should_quit = true;
1784 frame_queue_nonempty.notify_all();
1786 encode_thread.join();
1788 unique_lock<mutex> lock(storage_task_queue_mutex);
1789 storage_thread_should_quit = true;
1790 frame_queue_nonempty.notify_all();
1791 storage_task_queue_changed.notify_all();
1793 storage_thread.join();
1795 // Encode any leftover audio in the queues, and also any delayed frames.
1796 file_audio_encoder->encode_last_audio();
1798 if (!global_flags.x264_video_to_disk) {
1805 void QuickSyncEncoderImpl::close_file()
1810 void QuickSyncEncoderImpl::open_output_file(const std::string &filename)
1812 AVFormatContext *avctx = avformat_alloc_context();
1813 avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL);
1814 assert(filename.size() < sizeof(avctx->filename) - 1);
1815 strcpy(avctx->filename, filename.c_str());
1817 string url = "file:" + filename;
1818 int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
1820 char tmp[AV_ERROR_MAX_STRING_SIZE];
1821 fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret));
1825 string video_extradata; // FIXME: See other comment about global headers.
1826 if (global_flags.x264_video_to_disk) {
1827 video_extradata = x264_encoder->get_global_headers();
1830 AVCodecParametersWithDeleter audio_codecpar = file_audio_encoder->get_codec_parameters();
1831 file_mux.reset(new Mux(avctx, frame_width, frame_height, Mux::CODEC_H264, video_extradata, audio_codecpar.get(), TIMEBASE,
1832 std::bind(&DiskSpaceEstimator::report_write, disk_space_estimator, filename, _1)));
1834 if (global_flags.x264_video_to_disk) {
1835 x264_encoder->add_mux(file_mux.get());
1839 void QuickSyncEncoderImpl::encode_thread_func()
1841 pthread_setname_np(pthread_self(), "QS_Encode");
1843 int64_t last_dts = -1;
1844 int gop_start_display_frame_num = 0;
1845 for (int display_frame_num = 0; ; ++display_frame_num) {
1846 // Wait for the frame to be in the queue. Note that this only means
1847 // we started rendering it.
1850 unique_lock<mutex> lock(frame_queue_mutex);
1851 frame_queue_nonempty.wait(lock, [this]{
1852 return encode_thread_should_quit || !pending_video_frames.empty();
1854 if (encode_thread_should_quit && pending_video_frames.empty()) {
1855 // We may have queued frames left in the reorder buffer
1856 // that were supposed to be B-frames, but have no P-frame
1857 // to be encoded against. If so, encode them all as
1858 // P-frames instead. Note that this happens under the mutex,
1859 // but nobody else uses it at this point, since we're shutting down,
1860 // so there's no contention.
1861 encode_remaining_frames_as_p(quicksync_encoding_frame_num, gop_start_display_frame_num, last_dts);
1864 frame = move(pending_video_frames.front());
1865 pending_video_frames.pop();
1869 // Pass the frame on to x264 (or uncompressed to HTTP) as needed.
1870 // Note that this implicitly waits for the frame to be done rendering.
1871 pass_frame(frame, display_frame_num, frame.pts, frame.duration);
1873 if (global_flags.x264_video_to_disk) {
1874 unique_lock<mutex> lock(storage_task_queue_mutex);
1875 release_gl_surface(display_frame_num);
1879 reorder_buffer[display_frame_num] = move(frame);
1881 // Now encode as many QuickSync frames as we can using the frames we have available.
1882 // (It could be zero, or it could be multiple.) FIXME: make a function.
1885 int frame_type, quicksync_display_frame_num;
1886 encoding2display_order(quicksync_encoding_frame_num, intra_period, intra_idr_period, ip_period,
1887 &quicksync_display_frame_num, &frame_type, &pts_lag);
1888 if (!reorder_buffer.count(quicksync_display_frame_num)) {
1891 frame = move(reorder_buffer[quicksync_display_frame_num]);
1892 reorder_buffer.erase(quicksync_display_frame_num);
1894 if (frame_type == FRAME_IDR) {
1895 // Release any reference frames from the previous GOP.
1896 for (const ReferenceFrame &frame : reference_frames) {
1897 release_gl_surface(frame.display_number);
1899 reference_frames.clear();
1900 current_ref_frame_num = 0;
1901 gop_start_display_frame_num = quicksync_display_frame_num;
1904 // Determine the dts of this frame.
1906 if (pts_lag == -1) {
1907 assert(last_dts != -1);
1908 dts = last_dts + (TIMEBASE / MAX_FPS);
1910 dts = frame.pts - pts_lag;
1914 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);
1915 ++quicksync_encoding_frame_num;
1920 void QuickSyncEncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1922 if (reorder_buffer.empty()) {
1926 for (auto &pending_frame : reorder_buffer) {
1927 int display_frame_num = pending_frame.first;
1928 assert(display_frame_num > 0);
1929 PendingFrame frame = move(pending_frame.second);
1930 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
1931 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
1932 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts, frame.duration, frame.ycbcr_coefficients);
1937 void QuickSyncEncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data)
1940 memset(&pkt, 0, sizeof(pkt));
1942 pkt.data = const_cast<uint8_t *>(data);
1943 pkt.size = frame_width * frame_height * 2;
1944 pkt.stream_index = 0;
1945 pkt.flags = AV_PKT_FLAG_KEY;
1946 pkt.duration = duration;
1947 stream_mux->add_packet(pkt, pts, pts);
1952 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
1954 if (src_width == dst_pitch) {
1955 memcpy(dst, src, src_width * height);
1957 for (size_t y = 0; y < height; ++y) {
1958 const uint8_t *sptr = src + y * src_width;
1959 uint8_t *dptr = dst + y * dst_pitch;
1960 memcpy(dptr, sptr, src_width);
1967 void QuickSyncEncoderImpl::pass_frame(QuickSyncEncoderImpl::PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration)
1969 // Wait for the GPU to be done with the frame.
1972 sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
1974 } while (sync_status == GL_TIMEOUT_EXPIRED);
1975 assert(sync_status != GL_WAIT_FAILED);
1977 ReceivedTimestamps received_ts = find_received_timestamp(frame.input_frames);
1978 static int frameno = 0;
1979 print_latency("Current mixer latency (video inputs → ready for encode):",
1980 received_ts, false, &frameno, &mixer_latency_histogram);
1982 // Release back any input frames we needed to render this frame.
1983 frame.input_frames.clear();
1987 unique_lock<mutex> lock(storage_task_queue_mutex);
1988 surf = surface_for_frame[display_frame_num];
1989 assert(surf != nullptr);
1991 uint8_t *data = reinterpret_cast<uint8_t *>(surf->y_ptr);
1992 if (global_flags.uncompressed_video_to_http) {
1993 add_packet_for_uncompressed_frame(pts, duration, data);
1994 } else if (global_flags.x264_video_to_http || global_flags.x264_video_to_disk) {
1995 x264_encoder->add_frame(pts, duration, frame.ycbcr_coefficients, data, received_ts);
1999 void QuickSyncEncoderImpl::encode_frame(QuickSyncEncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
2000 int frame_type, int64_t pts, int64_t dts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients)
2002 const ReceivedTimestamps received_ts = find_received_timestamp(frame.input_frames);
2006 unique_lock<mutex> lock(storage_task_queue_mutex);
2007 surf = surface_for_frame[display_frame_num];
2008 assert(surf != nullptr);
2013 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
2014 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
2015 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
2016 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
2018 // Upload the frame to VA-API.
2019 unsigned char *surface_p = nullptr;
2020 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
2022 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
2023 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
2025 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
2026 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
2028 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
2029 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
2032 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
2033 CHECK_VASTATUS(va_status, "vaDestroyImage");
2035 // Schedule the frame for encoding.
2036 VASurfaceID va_surface = surf->src_surface;
2037 va_status = vaBeginPicture(va_dpy, context_id, va_surface);
2038 CHECK_VASTATUS(va_status, "vaBeginPicture");
2040 if (frame_type == FRAME_IDR) {
2041 // FIXME: If the mux wants global headers, we should not put the
2042 // SPS/PPS before each IDR frame, but rather put it into the
2043 // codec extradata (formatted differently?).
2045 // NOTE: If we change ycbcr_coefficients, it will not take effect
2046 // before the next IDR frame. This is acceptable, as it should only
2047 // happen on a mode change, which is rare.
2049 render_picture(surf, frame_type, display_frame_num, gop_start_display_frame_num);
2050 if (h264_packedheader) {
2051 render_packedsequence(ycbcr_coefficients);
2052 render_packedpicture();
2055 //render_sequence();
2056 render_picture(surf, frame_type, display_frame_num, gop_start_display_frame_num);
2058 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2060 va_status = vaEndPicture(va_dpy, context_id);
2061 CHECK_VASTATUS(va_status, "vaEndPicture");
2063 update_ReferenceFrames(display_frame_num, frame_type);
2065 vector<size_t> ref_display_frame_numbers;
2067 // Lock the references for this frame; otherwise, they could be
2068 // rendered to before this frame is done encoding.
2070 unique_lock<mutex> lock(storage_task_queue_mutex);
2071 for (const ReferenceFrame &frame : reference_frames) {
2072 assert(surface_for_frame.count(frame.display_number));
2073 ++surface_for_frame[frame.display_number]->refcount;
2074 ref_display_frame_numbers.push_back(frame.display_number);
2078 // so now the data is done encoding (well, async job kicked off)...
2079 // we send that to the storage thread
2081 tmp.display_order = display_frame_num;
2082 tmp.frame_type = frame_type;
2085 tmp.duration = duration;
2086 tmp.ycbcr_coefficients = ycbcr_coefficients;
2087 tmp.received_ts = received_ts;
2088 tmp.ref_display_frame_numbers = move(ref_display_frame_numbers);
2089 storage_task_enqueue(move(tmp));
2093 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)
2094 : impl(new QuickSyncEncoderImpl(filename, resource_pool, surface, va_display, width, height, oformat, x264_encoder, disk_space_estimator)) {}
2096 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2097 QuickSyncEncoder::~QuickSyncEncoder() {}
2099 void QuickSyncEncoder::add_audio(int64_t pts, vector<float> audio)
2101 impl->add_audio(pts, audio);
2104 bool QuickSyncEncoder::is_zerocopy() const
2106 return impl->is_zerocopy();
2109 bool QuickSyncEncoder::begin_frame(int64_t pts, int64_t duration, YCbCrLumaCoefficients ycbcr_coefficients, const vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex)
2111 return impl->begin_frame(pts, duration, ycbcr_coefficients, input_frames, y_tex, cbcr_tex);
2114 RefCountedGLsync QuickSyncEncoder::end_frame()
2116 return impl->end_frame();
2119 void QuickSyncEncoder::shutdown()
2124 void QuickSyncEncoder::close_file()
2129 void QuickSyncEncoder::set_stream_mux(Mux *mux)
2131 impl->set_stream_mux(mux);
2134 int64_t QuickSyncEncoder::global_delay() const {
2135 return impl->global_delay();