2 #include "h264encode.h"
4 #include <movit/util.h>
5 #include <EGL/eglplatform.h>
11 #include <libavcodec/avcodec.h>
12 #include <libavformat/avformat.h>
13 #include <libavutil/channel_layout.h>
14 #include <libavutil/frame.h>
15 #include <libavutil/rational.h>
16 #include <libavutil/samplefmt.h>
18 #include <libdrm/drm_fourcc.h>
24 #include <va/va_drm.h>
25 #include <va/va_drmcommon.h>
26 #include <va/va_enc_h264.h>
27 #include <va/va_x11.h>
29 #include <condition_variable>
49 #define CHECK_VASTATUS(va_status, func) \
50 if (va_status != VA_STATUS_SUCCESS) { \
51 fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
55 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
57 //#include "loadsurface.h"
59 #define NAL_REF_IDC_NONE 0
60 #define NAL_REF_IDC_LOW 1
61 #define NAL_REF_IDC_MEDIUM 2
62 #define NAL_REF_IDC_HIGH 3
70 #define SLICE_TYPE_P 0
71 #define SLICE_TYPE_B 1
72 #define SLICE_TYPE_I 2
73 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
74 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
75 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
78 #define ENTROPY_MODE_CAVLC 0
79 #define ENTROPY_MODE_CABAC 1
81 #define PROFILE_IDC_BASELINE 66
82 #define PROFILE_IDC_MAIN 77
83 #define PROFILE_IDC_HIGH 100
85 #define BITSTREAM_ALLOCATE_STEPPING 4096
86 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
87 #define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
88 #define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
90 static constexpr unsigned int MaxFrameNum = (2<<16);
91 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
92 static constexpr unsigned int Log2MaxFrameNum = 16;
93 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
94 static constexpr int rc_default_modes[] = { // Priority list of modes.
97 VA_RC_VBR_CONSTRAINED,
103 /* thread to save coded data */
104 #define SRC_SURFACE_FREE 0
105 #define SRC_SURFACE_IN_ENCODING 1
108 unsigned int *buffer;
110 int max_size_in_dword;
112 typedef struct __bitstream bitstream;
116 class H264EncoderImpl {
118 H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd);
120 void add_audio(int64_t pts, vector<float> audio);
121 bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
122 void end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames);
126 struct storage_task {
127 unsigned long long display_order;
132 struct PendingFrame {
133 RefCountedGLsync fence;
134 vector<RefCountedFrame> input_frames;
138 void encode_thread_func();
139 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
140 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
141 int frame_type, int64_t pts, int64_t dts);
142 void storage_task_thread();
143 void storage_task_enqueue(storage_task task);
144 void save_codeddata(storage_task task);
145 int render_packedsequence();
146 int render_packedpicture();
147 void render_packedslice();
148 int render_sequence();
149 int render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num);
150 void sps_rbsp(bitstream *bs);
151 void pps_rbsp(bitstream *bs);
152 int build_packed_pic_buffer(unsigned char **header_buffer);
153 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
154 void slice_header(bitstream *bs);
155 int build_packed_seq_buffer(unsigned char **header_buffer);
156 int build_packed_slice_buffer(unsigned char **header_buffer);
157 int init_va(const string &va_display);
159 VADisplay va_open_display(const string &va_display);
160 void va_close_display(VADisplay va_dpy);
162 int release_encode();
163 void update_ReferenceFrames(int frame_type);
164 int update_RefPicList(int frame_type);
166 bool is_shutdown = false;
170 thread encode_thread, storage_thread;
172 mutex storage_task_queue_mutex;
173 condition_variable storage_task_queue_changed;
174 int srcsurface_status[SURFACE_NUM]; // protected by storage_task_queue_mutex
175 queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
176 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
178 mutex frame_queue_mutex;
179 condition_variable frame_queue_nonempty;
180 bool encode_thread_should_quit = false; // under frame_queue_mutex
182 int current_storage_frame;
184 map<int, PendingFrame> pending_video_frames; // under frame_queue_mutex
185 map<int64_t, vector<float>> pending_audio_frames; // under frame_queue_mutex
188 AVCodecContext *context_audio;
189 AVFrame *audio_frame = nullptr;
192 Display *x11_display = nullptr;
194 // Encoder parameters
196 VAProfile h264_profile = (VAProfile)~0;
197 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
198 int config_attrib_num = 0, enc_packed_header_idx;
201 VASurfaceID src_surface, ref_surface;
202 VABufferID coded_buf;
204 VAImage surface_image;
205 GLuint y_tex, cbcr_tex;
207 // Only if use_zerocopy == true.
208 EGLImage y_egl_image, cbcr_egl_image;
210 // Only if use_zerocopy == false.
212 uint8_t *y_ptr, *cbcr_ptr;
213 size_t y_offset, cbcr_offset;
215 GLSurface gl_surfaces[SURFACE_NUM];
217 VAConfigID config_id;
218 VAContextID context_id;
219 VAEncSequenceParameterBufferH264 seq_param;
220 VAEncPictureParameterBufferH264 pic_param;
221 VAEncSliceParameterBufferH264 slice_param;
222 VAPictureH264 CurrentCurrPic;
223 VAPictureH264 ReferenceFrames[MAX_NUM_REF1], RefPicList0_P[MAX_NUM_REF2], RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
225 // Static quality settings.
226 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
227 static constexpr unsigned int num_ref_frames = 2;
228 static constexpr int initial_qp = 15;
229 static constexpr int minimal_qp = 0;
230 static constexpr int intra_period = 30;
231 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
233 // Quality settings that are meant to be static, but might be overridden
235 int constraint_set_flag = 0;
236 int h264_packedheader = 0; /* support pack header? */
237 int h264_maxref = (1<<16|1);
238 int h264_entropy_mode = 1; /* cabac */
242 unsigned int current_frame_num = 0;
243 unsigned int numShortTerm = 0;
247 int frame_width_mbaligned;
248 int frame_height_mbaligned;
251 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
252 // but if we don't delete it here, we get leaks. The GStreamer implementation
254 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
256 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
257 CHECK_VASTATUS(va_status, "vaRenderPicture");
259 for (int i = 0; i < num_buffers; ++i) {
260 va_status = vaDestroyBuffer(dpy, buffers[i]);
261 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
266 va_swap32(unsigned int val)
268 unsigned char *pval = (unsigned char *)&val;
270 return ((pval[0] << 24) |
277 bitstream_start(bitstream *bs)
279 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
280 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
285 bitstream_end(bitstream *bs)
287 int pos = (bs->bit_offset >> 5);
288 int bit_offset = (bs->bit_offset & 0x1f);
289 int bit_left = 32 - bit_offset;
292 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
297 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
299 int pos = (bs->bit_offset >> 5);
300 int bit_offset = (bs->bit_offset & 0x1f);
301 int bit_left = 32 - bit_offset;
306 bs->bit_offset += size_in_bits;
308 if (bit_left > size_in_bits) {
309 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
311 size_in_bits -= bit_left;
312 if (bit_left >= 32) {
313 bs->buffer[pos] = (val >> size_in_bits);
315 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
317 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
319 if (pos + 1 == bs->max_size_in_dword) {
320 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
321 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
324 bs->buffer[pos + 1] = val;
329 bitstream_put_ue(bitstream *bs, unsigned int val)
331 int size_in_bits = 0;
339 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
340 bitstream_put_ui(bs, val, size_in_bits);
344 bitstream_put_se(bitstream *bs, int val)
346 unsigned int new_val;
351 new_val = 2 * val - 1;
353 bitstream_put_ue(bs, new_val);
357 bitstream_byte_aligning(bitstream *bs, int bit)
359 int bit_offset = (bs->bit_offset & 0x7);
360 int bit_left = 8 - bit_offset;
366 assert(bit == 0 || bit == 1);
369 new_val = (1 << bit_left) - 1;
373 bitstream_put_ui(bs, new_val, bit_left);
377 rbsp_trailing_bits(bitstream *bs)
379 bitstream_put_ui(bs, 1, 1);
380 bitstream_byte_aligning(bs, 0);
383 static void nal_start_code_prefix(bitstream *bs)
385 bitstream_put_ui(bs, 0x00000001, 32);
388 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
390 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
391 bitstream_put_ui(bs, nal_ref_idc, 2);
392 bitstream_put_ui(bs, nal_unit_type, 5);
395 void H264EncoderImpl::sps_rbsp(bitstream *bs)
397 int profile_idc = PROFILE_IDC_BASELINE;
399 if (h264_profile == VAProfileH264High)
400 profile_idc = PROFILE_IDC_HIGH;
401 else if (h264_profile == VAProfileH264Main)
402 profile_idc = PROFILE_IDC_MAIN;
404 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
405 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
406 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
407 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
408 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
409 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
410 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
411 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
413 if ( profile_idc == PROFILE_IDC_HIGH) {
414 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
415 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
416 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
417 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
418 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
421 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
422 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
424 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
425 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
430 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
431 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
433 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
434 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
435 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
437 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
441 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
442 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
444 if (seq_param.frame_cropping_flag) {
445 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
446 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
447 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
448 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
451 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
453 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
455 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
456 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
457 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
458 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
460 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
461 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
462 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
464 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
465 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
466 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
469 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
470 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
472 bitstream_put_ui(bs, 1, 32); // FPS
473 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
474 bitstream_put_ui(bs, 1, 1);
476 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
479 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
480 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
481 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
483 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
484 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
485 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
487 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
488 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
489 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
490 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
492 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
493 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
495 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
496 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
499 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
503 void H264EncoderImpl::pps_rbsp(bitstream *bs)
505 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
506 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
508 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
510 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
512 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
514 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
515 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
517 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
518 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
520 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
521 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
522 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
524 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
525 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
526 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
529 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
530 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
531 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
533 rbsp_trailing_bits(bs);
536 void H264EncoderImpl::slice_header(bitstream *bs)
538 int first_mb_in_slice = slice_param.macroblock_address;
540 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
541 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
542 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
543 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
545 /* frame_mbs_only_flag == 1 */
546 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
551 if (pic_param.pic_fields.bits.idr_pic_flag)
552 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
554 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
555 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
556 /* pic_order_present_flag == 0 */
562 /* redundant_pic_cnt_present_flag == 0 */
564 if (IS_P_SLICE(slice_param.slice_type)) {
565 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
567 if (slice_param.num_ref_idx_active_override_flag)
568 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
570 /* ref_pic_list_reordering */
571 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
572 } else if (IS_B_SLICE(slice_param.slice_type)) {
573 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
575 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
577 if (slice_param.num_ref_idx_active_override_flag) {
578 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
579 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
582 /* ref_pic_list_reordering */
583 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
584 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
587 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
588 IS_P_SLICE(slice_param.slice_type)) ||
589 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
590 IS_B_SLICE(slice_param.slice_type))) {
591 /* FIXME: fill weight/offset table */
595 /* dec_ref_pic_marking */
596 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
597 unsigned char no_output_of_prior_pics_flag = 0;
598 unsigned char long_term_reference_flag = 0;
599 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
601 if (pic_param.pic_fields.bits.idr_pic_flag) {
602 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
603 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
605 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
609 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
610 !IS_I_SLICE(slice_param.slice_type))
611 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
613 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
615 /* ignore for SP/SI */
617 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
618 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
620 if (slice_param.disable_deblocking_filter_idc != 1) {
621 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
622 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
626 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
627 bitstream_byte_aligning(bs, 1);
631 int H264EncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
635 bitstream_start(&bs);
636 nal_start_code_prefix(&bs);
637 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
641 *header_buffer = (unsigned char *)bs.buffer;
642 return bs.bit_offset;
646 H264EncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
650 bitstream_start(&bs);
651 nal_start_code_prefix(&bs);
652 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
656 *header_buffer = (unsigned char *)bs.buffer;
657 return bs.bit_offset;
660 int H264EncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
663 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
664 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
666 bitstream_start(&bs);
667 nal_start_code_prefix(&bs);
669 if (IS_I_SLICE(slice_param.slice_type)) {
670 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
671 } else if (IS_P_SLICE(slice_param.slice_type)) {
672 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
674 assert(IS_B_SLICE(slice_param.slice_type));
675 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
681 *header_buffer = (unsigned char *)bs.buffer;
682 return bs.bit_offset;
687 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
688 1) period between Frame #X and Frame #N = #X - #N
689 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
690 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
691 4) intra_period and intra_idr_period take precedence over ip_period
692 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
693 of I/IDR frames, see bellow examples
694 -------------------------------------------------------------------
695 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
696 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
697 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
698 1 0 ignored IDRIIIIIII... (No IDR any more)
699 1 1 ignored IDR IDR IDR IDR...
700 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
701 >=2 0 1 IDRPPP IPPP I... (3/0/1)
702 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
703 (PBB)(IBB)(PBB)(IBB)...
704 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
705 IDRPPPPP IPPPPP IPPPPP...
706 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
707 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
708 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
709 {IDR(PBB)(PBB)(IBB)(PBB)}...
710 {IDR(PBB)(PBB)} (6/6/3)
714 // General pts/dts strategy:
716 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
717 // bit tricky. We assume first of all that the frame rate never goes _above_
718 // MAX_FPS, which gives us a frame period N. The decoder can always decode
719 // in at least this speed, as long at dts <= pts (the frame is not attempted
720 // presented before it is decoded). Furthermore, we never have longer chains of
721 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
722 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
723 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
724 // frame, with an order O <= C.)
726 // Many strategies are possible, but we establish these rules:
728 // - Tip frames have dts = pts - (C-O)*N.
729 // - Non-tip frames have dts = dts_last + N.
731 // An example, with C=2 and N=10 and the data flow showed with arrows:
734 // pts: 30 40 50 60 70 80
736 // dts: 10 30 20 60 50←40
741 // To show that this works fine also with irregular spacings, let's say that
742 // the third frame is delayed a bit (something earlier was dropped). Now the
743 // situation looks like this:
746 // pts: 30 40 80 90 100 110
748 // dts: 10 30 20 90 50←40
753 // The resetting on every tip frame makes sure dts never ends up lagging a lot
754 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
756 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
757 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
758 // a tip frame and should be given a dts based on the previous one.
763 void encoding2display_order(
764 int encoding_order, int intra_period,
765 int intra_idr_period, int ip_period,
766 int *displaying_order,
767 int *frame_type, int *pts_lag)
769 int encoding_order_gop = 0;
773 if (intra_period == 1) { /* all are I/IDR frames */
774 *displaying_order = encoding_order;
775 if (intra_idr_period == 0)
776 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
778 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
782 if (intra_period == 0)
783 intra_idr_period = 0;
785 if (ip_period == 1) {
786 // No B-frames, sequence is like IDR PPPPP IPPPPP.
787 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
788 *displaying_order = encoding_order;
790 if (encoding_order_gop == 0) { /* the first frame */
791 *frame_type = FRAME_IDR;
792 } else if (intra_period != 0 && /* have I frames */
793 encoding_order_gop >= 2 &&
794 (encoding_order_gop % intra_period == 0)) {
795 *frame_type = FRAME_I;
797 *frame_type = FRAME_P;
802 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
803 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
804 *pts_lag = -1; // Most frames are not tip frames.
806 if (encoding_order_gop == 0) { /* the first frame */
807 *frame_type = FRAME_IDR;
808 *displaying_order = encoding_order;
809 // IDR frames are a special case; I honestly can't find the logic behind
810 // why this is the right thing, but it seems to line up nicely in practice :-)
811 *pts_lag = TIMEBASE / MAX_FPS;
812 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
813 *frame_type = FRAME_B;
814 *displaying_order = encoding_order - 1;
815 if ((encoding_order_gop % ip_period) == 0) {
816 *pts_lag = 0; // Last B-frame.
818 } else if (intra_period != 0 && /* have I frames */
819 encoding_order_gop >= 2 &&
820 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
821 *frame_type = FRAME_I;
822 *displaying_order = encoding_order + ip_period - 1;
824 *frame_type = FRAME_P;
825 *displaying_order = encoding_order + ip_period - 1;
830 static const char *rc_to_string(int rc_mode)
843 case VA_RC_VBR_CONSTRAINED:
844 return "VBR_CONSTRAINED";
850 VADisplay H264EncoderImpl::va_open_display(const string &va_display)
852 if (va_display.empty()) {
853 x11_display = XOpenDisplay(NULL);
855 fprintf(stderr, "error: can't connect to X server!\n");
859 return vaGetDisplay(x11_display);
860 } else if (va_display[0] != '/') {
861 x11_display = XOpenDisplay(va_display.c_str());
863 fprintf(stderr, "error: can't connect to X server!\n");
867 return vaGetDisplay(x11_display);
869 drm_fd = open(va_display.c_str(), O_RDWR);
871 perror(va_display.c_str());
874 use_zerocopy = false;
875 return vaGetDisplayDRM(drm_fd);
879 void H264EncoderImpl::va_close_display(VADisplay va_dpy)
882 XCloseDisplay(x11_display);
883 x11_display = nullptr;
890 int H264EncoderImpl::init_va(const string &va_display)
892 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
893 VAEntrypoint *entrypoints;
894 int num_entrypoints, slice_entrypoint;
895 int support_encode = 0;
896 int major_ver, minor_ver;
900 va_dpy = va_open_display(va_display);
901 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
902 CHECK_VASTATUS(va_status, "vaInitialize");
904 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
905 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
907 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
911 /* use the highest profile */
912 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
913 if ((h264_profile != ~0) && h264_profile != profile_list[i])
916 h264_profile = profile_list[i];
917 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
918 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
919 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
924 if (support_encode == 1)
928 if (support_encode == 0) {
929 printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
930 printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
931 printf("to use VA-API against DRM instead of X11.\n");
934 switch (h264_profile) {
935 case VAProfileH264Baseline:
937 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
938 h264_entropy_mode = 0;
940 case VAProfileH264ConstrainedBaseline:
941 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
945 case VAProfileH264Main:
946 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
949 case VAProfileH264High:
950 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
953 h264_profile = VAProfileH264Baseline;
955 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
960 VAConfigAttrib attrib[VAConfigAttribTypeMax];
962 /* find out the format for the render target, and rate control mode */
963 for (i = 0; i < VAConfigAttribTypeMax; i++)
964 attrib[i].type = (VAConfigAttribType)i;
966 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
967 &attrib[0], VAConfigAttribTypeMax);
968 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
969 /* check the interested configattrib */
970 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
971 printf("Not find desired YUV420 RT format\n");
974 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
975 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
979 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
980 int tmp = attrib[VAConfigAttribRateControl].value;
982 if (rc_mode == -1 || !(rc_mode & tmp)) {
984 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
987 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
988 if (rc_default_modes[i] & tmp) {
989 rc_mode = rc_default_modes[i];
995 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
996 config_attrib[config_attrib_num].value = rc_mode;
1001 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
1002 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
1004 h264_packedheader = 1;
1005 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
1006 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1008 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
1009 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
1012 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
1013 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
1016 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
1017 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
1020 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
1021 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
1024 enc_packed_header_idx = config_attrib_num;
1025 config_attrib_num++;
1028 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
1029 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
1030 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1031 config_attrib_num++;
1034 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
1035 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
1042 int H264EncoderImpl::setup_encode()
1045 VASurfaceID *tmp_surfaceid;
1046 int codedbuf_size, i;
1047 static VASurfaceID src_surface[SURFACE_NUM];
1048 static VASurfaceID ref_surface[SURFACE_NUM];
1050 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
1051 &config_attrib[0], config_attrib_num, &config_id);
1052 CHECK_VASTATUS(va_status, "vaCreateConfig");
1054 /* create source surfaces */
1055 va_status = vaCreateSurfaces(va_dpy,
1056 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1057 &src_surface[0], SURFACE_NUM,
1059 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1061 /* create reference surfaces */
1062 va_status = vaCreateSurfaces(va_dpy,
1063 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1064 &ref_surface[0], SURFACE_NUM,
1066 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1068 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
1069 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
1070 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
1072 /* Create a context for this encode pipe */
1073 va_status = vaCreateContext(va_dpy, config_id,
1074 frame_width_mbaligned, frame_height_mbaligned,
1076 tmp_surfaceid, 2 * SURFACE_NUM,
1078 CHECK_VASTATUS(va_status, "vaCreateContext");
1079 free(tmp_surfaceid);
1081 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
1083 for (i = 0; i < SURFACE_NUM; i++) {
1084 /* create coded buffer once for all
1085 * other VA buffers which won't be used again after vaRenderPicture.
1086 * so APP can always vaCreateBuffer for every frame
1087 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
1088 * so VA won't maintain the coded buffer
1090 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
1091 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
1092 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1095 /* create OpenGL objects */
1096 //glGenFramebuffers(SURFACE_NUM, fbos);
1098 for (i = 0; i < SURFACE_NUM; i++) {
1099 glGenTextures(1, &gl_surfaces[i].y_tex);
1100 glGenTextures(1, &gl_surfaces[i].cbcr_tex);
1102 if (!use_zerocopy) {
1104 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].y_tex);
1105 glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, frame_width, frame_height);
1107 // Create CbCr image.
1108 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].cbcr_tex);
1109 glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG8, frame_width / 2, frame_height / 2);
1111 // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
1112 // buffers, due to potentially differing pitch.
1113 glGenBuffers(1, &gl_surfaces[i].pbo);
1114 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1115 glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
1116 uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
1117 gl_surfaces[i].y_offset = 0;
1118 gl_surfaces[i].cbcr_offset = frame_width * frame_height;
1119 gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
1120 gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
1121 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1125 for (i = 0; i < SURFACE_NUM; i++) {
1126 gl_surfaces[i].src_surface = src_surface[i];
1127 gl_surfaces[i].ref_surface = ref_surface[i];
1133 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1136 template<class T, class C>
1137 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1139 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1140 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1141 sort(middle, end, less_than);
1144 void H264EncoderImpl::update_ReferenceFrames(int frame_type)
1148 if (frame_type == FRAME_B)
1151 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1153 if (numShortTerm > num_ref_frames)
1154 numShortTerm = num_ref_frames;
1155 for (i=numShortTerm-1; i>0; i--)
1156 ReferenceFrames[i] = ReferenceFrames[i-1];
1157 ReferenceFrames[0] = CurrentCurrPic;
1159 current_frame_num++;
1160 if (current_frame_num > MaxFrameNum)
1161 current_frame_num = 0;
1165 int H264EncoderImpl::update_RefPicList(int frame_type)
1167 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1168 return a.frame_idx > b.frame_idx;
1170 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1171 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1173 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1174 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1177 if (frame_type == FRAME_P) {
1178 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1179 sort(&RefPicList0_P[0], &RefPicList0_P[numShortTerm], descending_by_frame_idx);
1180 } else if (frame_type == FRAME_B) {
1181 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1182 sort_two(&RefPicList0_B[0], &RefPicList0_B[numShortTerm], CurrentCurrPic, ascending_by_top_field_order_cnt);
1184 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1185 sort_two(&RefPicList1_B[0], &RefPicList1_B[numShortTerm], CurrentCurrPic, descending_by_top_field_order_cnt);
1192 int H264EncoderImpl::render_sequence()
1194 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1196 VAEncMiscParameterBuffer *misc_param;
1197 VAEncMiscParameterRateControl *misc_rate_ctrl;
1199 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1200 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1201 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1202 seq_param.bits_per_second = frame_bitrate;
1204 seq_param.intra_period = intra_period;
1205 seq_param.intra_idr_period = intra_idr_period;
1206 seq_param.ip_period = ip_period;
1208 seq_param.max_num_ref_frames = num_ref_frames;
1209 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1210 seq_param.time_scale = TIMEBASE * 2;
1211 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1212 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1213 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1214 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1215 seq_param.seq_fields.bits.chroma_format_idc = 1;
1216 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1218 if (frame_width != frame_width_mbaligned ||
1219 frame_height != frame_height_mbaligned) {
1220 seq_param.frame_cropping_flag = 1;
1221 seq_param.frame_crop_left_offset = 0;
1222 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1223 seq_param.frame_crop_top_offset = 0;
1224 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1227 va_status = vaCreateBuffer(va_dpy, context_id,
1228 VAEncSequenceParameterBufferType,
1229 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1230 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1232 va_status = vaCreateBuffer(va_dpy, context_id,
1233 VAEncMiscParameterBufferType,
1234 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1235 1, NULL, &rc_param_buf);
1236 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1238 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1239 misc_param->type = VAEncMiscParameterTypeRateControl;
1240 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1241 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1242 misc_rate_ctrl->bits_per_second = frame_bitrate;
1243 misc_rate_ctrl->target_percentage = 66;
1244 misc_rate_ctrl->window_size = 1000;
1245 misc_rate_ctrl->initial_qp = initial_qp;
1246 misc_rate_ctrl->min_qp = minimal_qp;
1247 misc_rate_ctrl->basic_unit_size = 0;
1248 vaUnmapBuffer(va_dpy, rc_param_buf);
1250 render_id[0] = seq_param_buf;
1251 render_id[1] = rc_param_buf;
1253 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1258 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1260 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1261 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1262 int PicOrderCntMsb, TopFieldOrderCnt;
1264 if (frame_type == FRAME_IDR)
1265 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1267 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1268 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1271 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1272 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1273 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1274 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1275 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1276 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1278 PicOrderCntMsb = prevPicOrderCntMsb;
1280 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1282 if (frame_type != FRAME_B) {
1283 PicOrderCntMsb_ref = PicOrderCntMsb;
1284 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1287 return TopFieldOrderCnt;
1290 int H264EncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1292 VABufferID pic_param_buf;
1296 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1297 pic_param.CurrPic.frame_idx = current_frame_num;
1298 pic_param.CurrPic.flags = 0;
1299 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1300 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1301 CurrentCurrPic = pic_param.CurrPic;
1303 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1304 for (i = numShortTerm; i < MAX_NUM_REF1; i++) {
1305 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1306 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1309 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1310 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1311 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1312 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1313 pic_param.frame_num = current_frame_num;
1314 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1315 pic_param.last_picture = false; // FIXME
1316 pic_param.pic_init_qp = initial_qp;
1318 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1319 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1320 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1322 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1327 int H264EncoderImpl::render_packedsequence()
1329 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1330 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1331 unsigned int length_in_bits;
1332 unsigned char *packedseq_buffer = NULL;
1335 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1337 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1339 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1340 packedheader_param_buffer.has_emulation_bytes = 0;
1341 va_status = vaCreateBuffer(va_dpy,
1343 VAEncPackedHeaderParameterBufferType,
1344 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1345 &packedseq_para_bufid);
1346 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1348 va_status = vaCreateBuffer(va_dpy,
1350 VAEncPackedHeaderDataBufferType,
1351 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1352 &packedseq_data_bufid);
1353 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1355 render_id[0] = packedseq_para_bufid;
1356 render_id[1] = packedseq_data_bufid;
1357 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1359 free(packedseq_buffer);
1365 int H264EncoderImpl::render_packedpicture()
1367 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1368 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1369 unsigned int length_in_bits;
1370 unsigned char *packedpic_buffer = NULL;
1373 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1374 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1375 packedheader_param_buffer.bit_length = length_in_bits;
1376 packedheader_param_buffer.has_emulation_bytes = 0;
1378 va_status = vaCreateBuffer(va_dpy,
1380 VAEncPackedHeaderParameterBufferType,
1381 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1382 &packedpic_para_bufid);
1383 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1385 va_status = vaCreateBuffer(va_dpy,
1387 VAEncPackedHeaderDataBufferType,
1388 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1389 &packedpic_data_bufid);
1390 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1392 render_id[0] = packedpic_para_bufid;
1393 render_id[1] = packedpic_data_bufid;
1394 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1396 free(packedpic_buffer);
1401 void H264EncoderImpl::render_packedslice()
1403 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1404 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1405 unsigned int length_in_bits;
1406 unsigned char *packedslice_buffer = NULL;
1409 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1410 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1411 packedheader_param_buffer.bit_length = length_in_bits;
1412 packedheader_param_buffer.has_emulation_bytes = 0;
1414 va_status = vaCreateBuffer(va_dpy,
1416 VAEncPackedHeaderParameterBufferType,
1417 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1418 &packedslice_para_bufid);
1419 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1421 va_status = vaCreateBuffer(va_dpy,
1423 VAEncPackedHeaderDataBufferType,
1424 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1425 &packedslice_data_bufid);
1426 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1428 render_id[0] = packedslice_para_bufid;
1429 render_id[1] = packedslice_data_bufid;
1430 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1432 free(packedslice_buffer);
1435 int H264EncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1437 VABufferID slice_param_buf;
1441 update_RefPicList(frame_type);
1443 /* one frame, one slice */
1444 slice_param.macroblock_address = 0;
1445 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1446 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1447 if (frame_type == FRAME_IDR) {
1448 if (encoding_frame_num != 0)
1449 ++slice_param.idr_pic_id;
1450 } else if (frame_type == FRAME_P) {
1451 int refpiclist0_max = h264_maxref & 0xffff;
1452 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1454 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1455 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1456 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1458 } else if (frame_type == FRAME_B) {
1459 int refpiclist0_max = h264_maxref & 0xffff;
1460 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1462 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1463 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1464 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1465 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1468 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1469 for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1470 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1471 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1475 slice_param.slice_alpha_c0_offset_div2 = 0;
1476 slice_param.slice_beta_offset_div2 = 0;
1477 slice_param.direct_spatial_mv_pred_flag = 1;
1478 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1481 if (h264_packedheader &&
1482 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1483 render_packedslice();
1485 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1486 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1487 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1489 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1496 void H264EncoderImpl::save_codeddata(storage_task task)
1498 VACodedBufferSegment *buf_list = NULL;
1503 const int64_t global_delay = int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS); // So we never get negative dts.
1505 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1506 CHECK_VASTATUS(va_status, "vaMapBuffer");
1507 while (buf_list != NULL) {
1508 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1509 buf_list = (VACodedBufferSegment *) buf_list->next;
1511 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1516 memset(&pkt, 0, sizeof(pkt));
1518 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1519 pkt.size = data.size();
1520 pkt.stream_index = 0;
1521 if (task.frame_type == FRAME_IDR || task.frame_type == FRAME_I) {
1522 pkt.flags = AV_PKT_FLAG_KEY;
1527 httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay);
1529 // Encode and add all audio frames up to and including the pts of this video frame.
1532 vector<float> audio;
1534 unique_lock<mutex> lock(frame_queue_mutex);
1535 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1536 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1537 auto it = pending_audio_frames.begin();
1538 if (it->first > task.pts) break;
1539 audio_pts = it->first;
1540 audio = move(it->second);
1541 pending_audio_frames.erase(it);
1544 audio_frame->nb_samples = audio.size() / 2;
1545 audio_frame->format = AV_SAMPLE_FMT_S32;
1546 audio_frame->channel_layout = AV_CH_LAYOUT_STEREO;
1548 unique_ptr<int32_t[]> int_samples(new int32_t[audio.size()]);
1549 int ret = avcodec_fill_audio_frame(audio_frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
1551 fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
1554 for (int i = 0; i < audio_frame->nb_samples * 2; ++i) {
1555 if (audio[i] >= 1.0f) {
1556 int_samples[i] = 2147483647;
1557 } else if (audio[i] <= -1.0f) {
1558 int_samples[i] = -2147483647;
1560 int_samples[i] = lrintf(audio[i] * 2147483647.0f);
1565 av_init_packet(&pkt);
1569 avcodec_encode_audio2(context_audio, &pkt, audio_frame, &got_output);
1571 pkt.stream_index = 1;
1572 httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay);
1574 // TODO: Delayed frames.
1575 av_frame_unref(audio_frame);
1576 av_free_packet(&pkt);
1577 if (audio_pts == task.pts) break;
1582 // this is weird. but it seems to put a new frame onto the queue
1583 void H264EncoderImpl::storage_task_enqueue(storage_task task)
1585 unique_lock<mutex> lock(storage_task_queue_mutex);
1586 storage_task_queue.push(move(task));
1587 storage_task_queue_changed.notify_all();
1590 void H264EncoderImpl::storage_task_thread()
1593 storage_task current;
1595 // wait until there's an encoded frame
1596 unique_lock<mutex> lock(storage_task_queue_mutex);
1597 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1598 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1599 current = move(storage_task_queue.front());
1600 storage_task_queue.pop();
1605 // waits for data, then saves it to disk.
1606 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1607 CHECK_VASTATUS(va_status, "vaSyncSurface");
1608 save_codeddata(move(current));
1611 unique_lock<mutex> lock(storage_task_queue_mutex);
1612 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1613 storage_task_queue_changed.notify_all();
1618 int H264EncoderImpl::release_encode()
1620 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1621 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1622 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1623 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1625 if (!use_zerocopy) {
1626 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1627 glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1628 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1629 glDeleteBuffers(1, &gl_surfaces[i].pbo);
1631 glDeleteTextures(1, &gl_surfaces[i].y_tex);
1632 glDeleteTextures(1, &gl_surfaces[i].cbcr_tex);
1635 vaDestroyContext(va_dpy, context_id);
1636 vaDestroyConfig(va_dpy, config_id);
1641 int H264EncoderImpl::deinit_va()
1643 vaTerminate(va_dpy);
1645 va_close_display(va_dpy);
1651 H264EncoderImpl::H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
1652 : current_storage_frame(0), surface(surface), httpd(httpd)
1654 AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC);
1655 context_audio = avcodec_alloc_context3(codec_audio);
1656 context_audio->bit_rate = AUDIO_OUTPUT_BIT_RATE;
1657 context_audio->sample_rate = OUTPUT_FREQUENCY;
1658 context_audio->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT;
1659 context_audio->channels = 2;
1660 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1661 context_audio->time_base = AVRational{1, TIMEBASE};
1662 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1663 fprintf(stderr, "Could not open codec\n");
1666 audio_frame = av_frame_alloc();
1668 frame_width = width;
1669 frame_height = height;
1670 frame_width_mbaligned = (frame_width + 15) & (~15);
1671 frame_height_mbaligned = (frame_height + 15) & (~15);
1675 init_va(va_display);
1678 // No frames are ready yet.
1679 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1681 memset(&seq_param, 0, sizeof(seq_param));
1682 memset(&pic_param, 0, sizeof(pic_param));
1683 memset(&slice_param, 0, sizeof(slice_param));
1685 storage_thread = thread(&H264EncoderImpl::storage_task_thread, this);
1687 encode_thread = thread([this]{
1688 //SDL_GL_MakeCurrent(window, context);
1689 QOpenGLContext *context = create_context(this->surface);
1690 eglBindAPI(EGL_OPENGL_API);
1691 if (!make_current(context, this->surface)) {
1692 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1696 encode_thread_func();
1700 H264EncoderImpl::~H264EncoderImpl()
1703 av_frame_free(&audio_frame);
1705 // TODO: Destroy context.
1708 bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1710 assert(!is_shutdown);
1712 // Wait until this frame slot is done encoding.
1713 unique_lock<mutex> lock(storage_task_queue_mutex);
1714 if (srcsurface_status[current_storage_frame % SURFACE_NUM] != SRC_SURFACE_FREE) {
1715 fprintf(stderr, "Warning: Slot %d (for frame %d) is still encoding, rendering has to wait for H.264 encoder\n",
1716 current_storage_frame % SURFACE_NUM, current_storage_frame);
1718 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1719 srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
1720 if (storage_thread_should_quit) return false;
1723 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
1724 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1725 *y_tex = surf->y_tex;
1726 *cbcr_tex = surf->cbcr_tex;
1728 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
1729 CHECK_VASTATUS(va_status, "vaDeriveImage");
1732 VABufferInfo buf_info;
1733 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1734 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1735 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1738 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1739 EGLint y_attribs[] = {
1740 EGL_WIDTH, frame_width,
1741 EGL_HEIGHT, frame_height,
1742 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1743 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1744 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1745 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1749 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1750 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1752 // Associate Y image to a texture.
1753 glBindTexture(GL_TEXTURE_2D, *y_tex);
1754 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1756 // Create CbCr image.
1757 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1758 EGLint cbcr_attribs[] = {
1759 EGL_WIDTH, frame_width,
1760 EGL_HEIGHT, frame_height,
1761 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1762 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1763 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1764 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1768 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1769 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1771 // Associate CbCr image to a texture.
1772 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1773 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1779 void H264EncoderImpl::add_audio(int64_t pts, vector<float> audio)
1781 assert(!is_shutdown);
1783 unique_lock<mutex> lock(frame_queue_mutex);
1784 pending_audio_frames[pts] = move(audio);
1786 frame_queue_nonempty.notify_all();
1789 void H264EncoderImpl::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
1791 assert(!is_shutdown);
1793 if (!use_zerocopy) {
1794 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1796 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1799 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1802 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1804 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->y_offset));
1807 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1809 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->cbcr_offset));
1812 glBindTexture(GL_TEXTURE_2D, 0);
1814 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1817 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1819 fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1824 unique_lock<mutex> lock(frame_queue_mutex);
1825 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
1826 ++current_storage_frame;
1828 frame_queue_nonempty.notify_all();
1831 void H264EncoderImpl::shutdown()
1838 unique_lock<mutex> lock(frame_queue_mutex);
1839 encode_thread_should_quit = true;
1840 frame_queue_nonempty.notify_all();
1842 encode_thread.join();
1844 unique_lock<mutex> lock(storage_task_queue_mutex);
1845 storage_thread_should_quit = true;
1846 frame_queue_nonempty.notify_all();
1847 storage_task_queue_changed.notify_all();
1849 storage_thread.join();
1856 void H264EncoderImpl::encode_thread_func()
1858 int64_t last_dts = -1;
1859 int gop_start_display_frame_num = 0;
1860 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
1863 int frame_type, display_frame_num;
1864 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
1865 &display_frame_num, &frame_type, &pts_lag);
1866 if (frame_type == FRAME_IDR) {
1868 current_frame_num = 0;
1869 gop_start_display_frame_num = display_frame_num;
1873 unique_lock<mutex> lock(frame_queue_mutex);
1874 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
1875 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
1877 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
1878 // We have queued frames that were supposed to be B-frames,
1879 // but will be no P-frame to encode them against. Encode them all
1880 // as P-frames instead. Note that this happens under the mutex,
1881 // but nobody else uses it at this point, since we're shutting down,
1882 // so there's no contention.
1883 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
1886 frame = move(pending_video_frames[display_frame_num]);
1887 pending_video_frames.erase(display_frame_num);
1891 // Determine the dts of this frame.
1893 if (pts_lag == -1) {
1894 assert(last_dts != -1);
1895 dts = last_dts + (TIMEBASE / MAX_FPS);
1897 dts = frame.pts - pts_lag;
1901 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts);
1905 void H264EncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1907 if (pending_video_frames.empty()) {
1911 for (auto &pending_frame : pending_video_frames) {
1912 int display_frame_num = pending_frame.first;
1913 assert(display_frame_num > 0);
1914 PendingFrame frame = move(pending_frame.second);
1915 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
1916 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
1917 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
1924 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
1926 if (src_width == dst_pitch) {
1927 memcpy(dst, src, src_width * height);
1929 for (size_t y = 0; y < height; ++y) {
1930 const uint8_t *sptr = src + y * src_width;
1931 uint8_t *dptr = dst + y * dst_pitch;
1932 memcpy(dptr, sptr, src_width);
1939 void H264EncoderImpl::encode_frame(H264EncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
1940 int frame_type, int64_t pts, int64_t dts)
1942 // Wait for the GPU to be done with the frame.
1945 sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
1947 } while (sync_status == GL_TIMEOUT_EXPIRED);
1948 assert(sync_status != GL_WAIT_FAILED);
1950 // Release back any input frames we needed to render this frame.
1951 frame.input_frames.clear();
1953 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
1957 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
1958 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
1959 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
1960 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
1962 unsigned char *surface_p = nullptr;
1963 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
1965 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
1966 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
1968 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
1969 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
1971 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
1972 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
1975 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
1976 CHECK_VASTATUS(va_status, "vaDestroyImage");
1978 // Schedule the frame for encoding.
1979 VASurfaceID va_surface = surf->src_surface;
1980 va_status = vaBeginPicture(va_dpy, context_id, va_surface);
1981 CHECK_VASTATUS(va_status, "vaBeginPicture");
1983 if (frame_type == FRAME_IDR) {
1985 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
1986 if (h264_packedheader) {
1987 render_packedsequence();
1988 render_packedpicture();
1991 //render_sequence();
1992 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
1994 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
1996 va_status = vaEndPicture(va_dpy, context_id);
1997 CHECK_VASTATUS(va_status, "vaEndPicture");
1999 // so now the data is done encoding (well, async job kicked off)...
2000 // we send that to the storage thread
2002 tmp.display_order = display_frame_num;
2003 tmp.frame_type = frame_type;
2006 storage_task_enqueue(move(tmp));
2008 update_ReferenceFrames(frame_type);
2012 H264Encoder::H264Encoder(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
2013 : impl(new H264EncoderImpl(surface, va_display, width, height, httpd)) {}
2015 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2016 H264Encoder::~H264Encoder() {}
2018 void H264Encoder::add_audio(int64_t pts, vector<float> audio)
2020 impl->add_audio(pts, audio);
2023 bool H264Encoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
2025 return impl->begin_frame(y_tex, cbcr_tex);
2028 void H264Encoder::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
2030 impl->end_frame(fence, pts, input_frames);
2033 void H264Encoder::shutdown()