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;
191 Display *x11_display = nullptr;
193 // Encoder parameters
195 VAProfile h264_profile = (VAProfile)~0;
196 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
197 int config_attrib_num = 0, enc_packed_header_idx;
200 VASurfaceID src_surface, ref_surface;
201 VABufferID coded_buf;
203 VAImage surface_image;
204 GLuint y_tex, cbcr_tex;
206 // Only if use_zerocopy == true.
207 EGLImage y_egl_image, cbcr_egl_image;
209 // Only if use_zerocopy == false.
211 uint8_t *y_ptr, *cbcr_ptr;
212 size_t y_offset, cbcr_offset;
214 GLSurface gl_surfaces[SURFACE_NUM];
216 VAConfigID config_id;
217 VAContextID context_id;
218 VAEncSequenceParameterBufferH264 seq_param;
219 VAEncPictureParameterBufferH264 pic_param;
220 VAEncSliceParameterBufferH264 slice_param;
221 VAPictureH264 CurrentCurrPic;
222 VAPictureH264 ReferenceFrames[MAX_NUM_REF1], RefPicList0_P[MAX_NUM_REF2], RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
224 // Static quality settings.
225 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
226 static constexpr unsigned int num_ref_frames = 2;
227 static constexpr int initial_qp = 15;
228 static constexpr int minimal_qp = 0;
229 static constexpr int intra_period = 30;
230 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
232 // Quality settings that are meant to be static, but might be overridden
234 int constraint_set_flag = 0;
235 int h264_packedheader = 0; /* support pack header? */
236 int h264_maxref = (1<<16|1);
237 int h264_entropy_mode = 1; /* cabac */
241 unsigned int current_frame_num = 0;
242 unsigned int numShortTerm = 0;
246 int frame_width_mbaligned;
247 int frame_height_mbaligned;
250 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
251 // but if we don't delete it here, we get leaks. The GStreamer implementation
253 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
255 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
256 CHECK_VASTATUS(va_status, "vaRenderPicture");
258 for (int i = 0; i < num_buffers; ++i) {
259 va_status = vaDestroyBuffer(dpy, buffers[i]);
260 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
265 va_swap32(unsigned int val)
267 unsigned char *pval = (unsigned char *)&val;
269 return ((pval[0] << 24) |
276 bitstream_start(bitstream *bs)
278 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
279 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
284 bitstream_end(bitstream *bs)
286 int pos = (bs->bit_offset >> 5);
287 int bit_offset = (bs->bit_offset & 0x1f);
288 int bit_left = 32 - bit_offset;
291 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
296 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
298 int pos = (bs->bit_offset >> 5);
299 int bit_offset = (bs->bit_offset & 0x1f);
300 int bit_left = 32 - bit_offset;
305 bs->bit_offset += size_in_bits;
307 if (bit_left > size_in_bits) {
308 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
310 size_in_bits -= bit_left;
311 if (bit_left >= 32) {
312 bs->buffer[pos] = (val >> size_in_bits);
314 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
316 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
318 if (pos + 1 == bs->max_size_in_dword) {
319 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
320 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
323 bs->buffer[pos + 1] = val;
328 bitstream_put_ue(bitstream *bs, unsigned int val)
330 int size_in_bits = 0;
338 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
339 bitstream_put_ui(bs, val, size_in_bits);
343 bitstream_put_se(bitstream *bs, int val)
345 unsigned int new_val;
350 new_val = 2 * val - 1;
352 bitstream_put_ue(bs, new_val);
356 bitstream_byte_aligning(bitstream *bs, int bit)
358 int bit_offset = (bs->bit_offset & 0x7);
359 int bit_left = 8 - bit_offset;
365 assert(bit == 0 || bit == 1);
368 new_val = (1 << bit_left) - 1;
372 bitstream_put_ui(bs, new_val, bit_left);
376 rbsp_trailing_bits(bitstream *bs)
378 bitstream_put_ui(bs, 1, 1);
379 bitstream_byte_aligning(bs, 0);
382 static void nal_start_code_prefix(bitstream *bs)
384 bitstream_put_ui(bs, 0x00000001, 32);
387 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
389 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
390 bitstream_put_ui(bs, nal_ref_idc, 2);
391 bitstream_put_ui(bs, nal_unit_type, 5);
394 void H264EncoderImpl::sps_rbsp(bitstream *bs)
396 int profile_idc = PROFILE_IDC_BASELINE;
398 if (h264_profile == VAProfileH264High)
399 profile_idc = PROFILE_IDC_HIGH;
400 else if (h264_profile == VAProfileH264Main)
401 profile_idc = PROFILE_IDC_MAIN;
403 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
404 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
405 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
406 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
407 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
408 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
409 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
410 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
412 if ( profile_idc == PROFILE_IDC_HIGH) {
413 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
414 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
415 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
416 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
417 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
420 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
421 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
423 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
424 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
429 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
430 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
432 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
433 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
434 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
436 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
440 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
441 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
443 if (seq_param.frame_cropping_flag) {
444 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
445 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
446 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
447 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
450 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
452 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
454 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
455 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
456 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
457 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
459 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
460 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
461 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
463 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
464 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
465 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
468 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
469 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
471 bitstream_put_ui(bs, 1, 32); // FPS
472 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
473 bitstream_put_ui(bs, 1, 1);
475 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
478 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
479 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
480 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
482 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
483 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
484 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
486 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
487 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
488 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
489 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
491 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
492 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
494 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
495 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
498 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
502 void H264EncoderImpl::pps_rbsp(bitstream *bs)
504 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
505 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
507 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
509 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
511 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
513 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
514 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
516 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
517 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
519 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
520 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
521 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
523 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
524 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
525 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
528 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
529 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
530 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
532 rbsp_trailing_bits(bs);
535 void H264EncoderImpl::slice_header(bitstream *bs)
537 int first_mb_in_slice = slice_param.macroblock_address;
539 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
540 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
541 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
542 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
544 /* frame_mbs_only_flag == 1 */
545 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
550 if (pic_param.pic_fields.bits.idr_pic_flag)
551 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
553 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
554 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
555 /* pic_order_present_flag == 0 */
561 /* redundant_pic_cnt_present_flag == 0 */
563 if (IS_P_SLICE(slice_param.slice_type)) {
564 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
566 if (slice_param.num_ref_idx_active_override_flag)
567 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
569 /* ref_pic_list_reordering */
570 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
571 } else if (IS_B_SLICE(slice_param.slice_type)) {
572 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
574 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
576 if (slice_param.num_ref_idx_active_override_flag) {
577 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
578 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
581 /* ref_pic_list_reordering */
582 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
583 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
586 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
587 IS_P_SLICE(slice_param.slice_type)) ||
588 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
589 IS_B_SLICE(slice_param.slice_type))) {
590 /* FIXME: fill weight/offset table */
594 /* dec_ref_pic_marking */
595 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
596 unsigned char no_output_of_prior_pics_flag = 0;
597 unsigned char long_term_reference_flag = 0;
598 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
600 if (pic_param.pic_fields.bits.idr_pic_flag) {
601 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
602 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
604 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
608 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
609 !IS_I_SLICE(slice_param.slice_type))
610 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
612 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
614 /* ignore for SP/SI */
616 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
617 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
619 if (slice_param.disable_deblocking_filter_idc != 1) {
620 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
621 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
625 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
626 bitstream_byte_aligning(bs, 1);
630 int H264EncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
634 bitstream_start(&bs);
635 nal_start_code_prefix(&bs);
636 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
640 *header_buffer = (unsigned char *)bs.buffer;
641 return bs.bit_offset;
645 H264EncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
649 bitstream_start(&bs);
650 nal_start_code_prefix(&bs);
651 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
655 *header_buffer = (unsigned char *)bs.buffer;
656 return bs.bit_offset;
659 int H264EncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
662 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
663 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
665 bitstream_start(&bs);
666 nal_start_code_prefix(&bs);
668 if (IS_I_SLICE(slice_param.slice_type)) {
669 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
670 } else if (IS_P_SLICE(slice_param.slice_type)) {
671 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
673 assert(IS_B_SLICE(slice_param.slice_type));
674 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
680 *header_buffer = (unsigned char *)bs.buffer;
681 return bs.bit_offset;
686 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
687 1) period between Frame #X and Frame #N = #X - #N
688 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
689 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
690 4) intra_period and intra_idr_period take precedence over ip_period
691 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
692 of I/IDR frames, see bellow examples
693 -------------------------------------------------------------------
694 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
695 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
696 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
697 1 0 ignored IDRIIIIIII... (No IDR any more)
698 1 1 ignored IDR IDR IDR IDR...
699 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
700 >=2 0 1 IDRPPP IPPP I... (3/0/1)
701 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
702 (PBB)(IBB)(PBB)(IBB)...
703 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
704 IDRPPPPP IPPPPP IPPPPP...
705 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
706 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
707 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
708 {IDR(PBB)(PBB)(IBB)(PBB)}...
709 {IDR(PBB)(PBB)} (6/6/3)
713 // General pts/dts strategy:
715 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
716 // bit tricky. We assume first of all that the frame rate never goes _above_
717 // MAX_FPS, which gives us a frame period N. The decoder can always decode
718 // in at least this speed, as long at dts <= pts (the frame is not attempted
719 // presented before it is decoded). Furthermore, we never have longer chains of
720 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
721 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
722 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
723 // frame, with an order O <= C.)
725 // Many strategies are possible, but we establish these rules:
727 // - Tip frames have dts = pts - (C-O)*N.
728 // - Non-tip frames have dts = dts_last + N.
730 // An example, with C=2 and N=10 and the data flow showed with arrows:
733 // pts: 30 40 50 60 70 80
735 // dts: 10 30 20 60 50←40
740 // To show that this works fine also with irregular spacings, let's say that
741 // the third frame is delayed a bit (something earlier was dropped). Now the
742 // situation looks like this:
745 // pts: 30 40 80 90 100 110
747 // dts: 10 30 20 90 50←40
752 // The resetting on every tip frame makes sure dts never ends up lagging a lot
753 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
755 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
756 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
757 // a tip frame and should be given a dts based on the previous one.
762 void encoding2display_order(
763 int encoding_order, int intra_period,
764 int intra_idr_period, int ip_period,
765 int *displaying_order,
766 int *frame_type, int *pts_lag)
768 int encoding_order_gop = 0;
772 if (intra_period == 1) { /* all are I/IDR frames */
773 *displaying_order = encoding_order;
774 if (intra_idr_period == 0)
775 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
777 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
781 if (intra_period == 0)
782 intra_idr_period = 0;
784 if (ip_period == 1) {
785 // No B-frames, sequence is like IDR PPPPP IPPPPP.
786 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
787 *displaying_order = encoding_order;
789 if (encoding_order_gop == 0) { /* the first frame */
790 *frame_type = FRAME_IDR;
791 } else if (intra_period != 0 && /* have I frames */
792 encoding_order_gop >= 2 &&
793 (encoding_order_gop % intra_period == 0)) {
794 *frame_type = FRAME_I;
796 *frame_type = FRAME_P;
801 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
802 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
803 *pts_lag = -1; // Most frames are not tip frames.
805 if (encoding_order_gop == 0) { /* the first frame */
806 *frame_type = FRAME_IDR;
807 *displaying_order = encoding_order;
808 // IDR frames are a special case; I honestly can't find the logic behind
809 // why this is the right thing, but it seems to line up nicely in practice :-)
810 *pts_lag = TIMEBASE / MAX_FPS;
811 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
812 *frame_type = FRAME_B;
813 *displaying_order = encoding_order - 1;
814 if ((encoding_order_gop % ip_period) == 0) {
815 *pts_lag = 0; // Last B-frame.
817 } else if (intra_period != 0 && /* have I frames */
818 encoding_order_gop >= 2 &&
819 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
820 *frame_type = FRAME_I;
821 *displaying_order = encoding_order + ip_period - 1;
823 *frame_type = FRAME_P;
824 *displaying_order = encoding_order + ip_period - 1;
829 static const char *rc_to_string(int rc_mode)
842 case VA_RC_VBR_CONSTRAINED:
843 return "VBR_CONSTRAINED";
849 VADisplay H264EncoderImpl::va_open_display(const string &va_display)
851 if (va_display.empty()) {
852 x11_display = XOpenDisplay(NULL);
854 fprintf(stderr, "error: can't connect to X server!\n");
858 return vaGetDisplay(x11_display);
859 } else if (va_display[0] != '/') {
860 x11_display = XOpenDisplay(va_display.c_str());
862 fprintf(stderr, "error: can't connect to X server!\n");
866 return vaGetDisplay(x11_display);
868 drm_fd = open(va_display.c_str(), O_RDWR);
870 perror(va_display.c_str());
873 use_zerocopy = false;
874 return vaGetDisplayDRM(drm_fd);
878 void H264EncoderImpl::va_close_display(VADisplay va_dpy)
881 XCloseDisplay(x11_display);
882 x11_display = nullptr;
889 int H264EncoderImpl::init_va(const string &va_display)
891 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
892 VAEntrypoint *entrypoints;
893 int num_entrypoints, slice_entrypoint;
894 int support_encode = 0;
895 int major_ver, minor_ver;
899 va_dpy = va_open_display(va_display);
900 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
901 CHECK_VASTATUS(va_status, "vaInitialize");
903 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
904 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
906 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
910 /* use the highest profile */
911 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
912 if ((h264_profile != ~0) && h264_profile != profile_list[i])
915 h264_profile = profile_list[i];
916 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
917 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
918 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
923 if (support_encode == 1)
927 if (support_encode == 0) {
928 printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
929 printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
930 printf("to use VA-API against DRM instead of X11.\n");
933 switch (h264_profile) {
934 case VAProfileH264Baseline:
936 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
937 h264_entropy_mode = 0;
939 case VAProfileH264ConstrainedBaseline:
940 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
944 case VAProfileH264Main:
945 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
948 case VAProfileH264High:
949 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
952 h264_profile = VAProfileH264Baseline;
954 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
959 VAConfigAttrib attrib[VAConfigAttribTypeMax];
961 /* find out the format for the render target, and rate control mode */
962 for (i = 0; i < VAConfigAttribTypeMax; i++)
963 attrib[i].type = (VAConfigAttribType)i;
965 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
966 &attrib[0], VAConfigAttribTypeMax);
967 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
968 /* check the interested configattrib */
969 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
970 printf("Not find desired YUV420 RT format\n");
973 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
974 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
978 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
979 int tmp = attrib[VAConfigAttribRateControl].value;
981 if (rc_mode == -1 || !(rc_mode & tmp)) {
983 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
986 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
987 if (rc_default_modes[i] & tmp) {
988 rc_mode = rc_default_modes[i];
994 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
995 config_attrib[config_attrib_num].value = rc_mode;
1000 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
1001 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
1003 h264_packedheader = 1;
1004 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
1005 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1007 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
1008 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
1011 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
1012 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
1015 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
1016 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
1019 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
1020 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
1023 enc_packed_header_idx = config_attrib_num;
1024 config_attrib_num++;
1027 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
1028 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
1029 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1030 config_attrib_num++;
1033 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
1034 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
1041 int H264EncoderImpl::setup_encode()
1044 VASurfaceID *tmp_surfaceid;
1045 int codedbuf_size, i;
1046 static VASurfaceID src_surface[SURFACE_NUM];
1047 static VASurfaceID ref_surface[SURFACE_NUM];
1049 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
1050 &config_attrib[0], config_attrib_num, &config_id);
1051 CHECK_VASTATUS(va_status, "vaCreateConfig");
1053 /* create source surfaces */
1054 va_status = vaCreateSurfaces(va_dpy,
1055 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1056 &src_surface[0], SURFACE_NUM,
1058 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1060 /* create reference surfaces */
1061 va_status = vaCreateSurfaces(va_dpy,
1062 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1063 &ref_surface[0], SURFACE_NUM,
1065 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1067 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
1068 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
1069 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
1071 /* Create a context for this encode pipe */
1072 va_status = vaCreateContext(va_dpy, config_id,
1073 frame_width_mbaligned, frame_height_mbaligned,
1075 tmp_surfaceid, 2 * SURFACE_NUM,
1077 CHECK_VASTATUS(va_status, "vaCreateContext");
1078 free(tmp_surfaceid);
1080 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
1082 for (i = 0; i < SURFACE_NUM; i++) {
1083 /* create coded buffer once for all
1084 * other VA buffers which won't be used again after vaRenderPicture.
1085 * so APP can always vaCreateBuffer for every frame
1086 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
1087 * so VA won't maintain the coded buffer
1089 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
1090 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
1091 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1094 /* create OpenGL objects */
1095 //glGenFramebuffers(SURFACE_NUM, fbos);
1097 for (i = 0; i < SURFACE_NUM; i++) {
1098 glGenTextures(1, &gl_surfaces[i].y_tex);
1099 glGenTextures(1, &gl_surfaces[i].cbcr_tex);
1101 if (!use_zerocopy) {
1103 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].y_tex);
1104 glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, frame_width, frame_height);
1106 // Create CbCr image.
1107 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].cbcr_tex);
1108 glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG8, frame_width / 2, frame_height / 2);
1110 // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
1111 // buffers, due to potentially differing pitch.
1112 glGenBuffers(1, &gl_surfaces[i].pbo);
1113 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1114 glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
1115 uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
1116 gl_surfaces[i].y_offset = 0;
1117 gl_surfaces[i].cbcr_offset = frame_width * frame_height;
1118 gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
1119 gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
1120 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1124 for (i = 0; i < SURFACE_NUM; i++) {
1125 gl_surfaces[i].src_surface = src_surface[i];
1126 gl_surfaces[i].ref_surface = ref_surface[i];
1132 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1135 template<class T, class C>
1136 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1138 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1139 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1140 sort(middle, end, less_than);
1143 void H264EncoderImpl::update_ReferenceFrames(int frame_type)
1147 if (frame_type == FRAME_B)
1150 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1152 if (numShortTerm > num_ref_frames)
1153 numShortTerm = num_ref_frames;
1154 for (i=numShortTerm-1; i>0; i--)
1155 ReferenceFrames[i] = ReferenceFrames[i-1];
1156 ReferenceFrames[0] = CurrentCurrPic;
1158 current_frame_num++;
1159 if (current_frame_num > MaxFrameNum)
1160 current_frame_num = 0;
1164 int H264EncoderImpl::update_RefPicList(int frame_type)
1166 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1167 return a.frame_idx > b.frame_idx;
1169 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1170 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1172 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1173 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1176 if (frame_type == FRAME_P) {
1177 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1178 sort(&RefPicList0_P[0], &RefPicList0_P[numShortTerm], descending_by_frame_idx);
1179 } else if (frame_type == FRAME_B) {
1180 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1181 sort_two(&RefPicList0_B[0], &RefPicList0_B[numShortTerm], CurrentCurrPic, ascending_by_top_field_order_cnt);
1183 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1184 sort_two(&RefPicList1_B[0], &RefPicList1_B[numShortTerm], CurrentCurrPic, descending_by_top_field_order_cnt);
1191 int H264EncoderImpl::render_sequence()
1193 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1195 VAEncMiscParameterBuffer *misc_param;
1196 VAEncMiscParameterRateControl *misc_rate_ctrl;
1198 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1199 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1200 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1201 seq_param.bits_per_second = frame_bitrate;
1203 seq_param.intra_period = intra_period;
1204 seq_param.intra_idr_period = intra_idr_period;
1205 seq_param.ip_period = ip_period;
1207 seq_param.max_num_ref_frames = num_ref_frames;
1208 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1209 seq_param.time_scale = TIMEBASE * 2;
1210 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1211 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1212 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1213 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1214 seq_param.seq_fields.bits.chroma_format_idc = 1;
1215 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1217 if (frame_width != frame_width_mbaligned ||
1218 frame_height != frame_height_mbaligned) {
1219 seq_param.frame_cropping_flag = 1;
1220 seq_param.frame_crop_left_offset = 0;
1221 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1222 seq_param.frame_crop_top_offset = 0;
1223 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1226 va_status = vaCreateBuffer(va_dpy, context_id,
1227 VAEncSequenceParameterBufferType,
1228 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1229 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1231 va_status = vaCreateBuffer(va_dpy, context_id,
1232 VAEncMiscParameterBufferType,
1233 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1234 1, NULL, &rc_param_buf);
1235 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1237 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1238 misc_param->type = VAEncMiscParameterTypeRateControl;
1239 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1240 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1241 misc_rate_ctrl->bits_per_second = frame_bitrate;
1242 misc_rate_ctrl->target_percentage = 66;
1243 misc_rate_ctrl->window_size = 1000;
1244 misc_rate_ctrl->initial_qp = initial_qp;
1245 misc_rate_ctrl->min_qp = minimal_qp;
1246 misc_rate_ctrl->basic_unit_size = 0;
1247 vaUnmapBuffer(va_dpy, rc_param_buf);
1249 render_id[0] = seq_param_buf;
1250 render_id[1] = rc_param_buf;
1252 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1257 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1259 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1260 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1261 int PicOrderCntMsb, TopFieldOrderCnt;
1263 if (frame_type == FRAME_IDR)
1264 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1266 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1267 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1270 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1271 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1272 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1273 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1274 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1275 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1277 PicOrderCntMsb = prevPicOrderCntMsb;
1279 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1281 if (frame_type != FRAME_B) {
1282 PicOrderCntMsb_ref = PicOrderCntMsb;
1283 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1286 return TopFieldOrderCnt;
1289 int H264EncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1291 VABufferID pic_param_buf;
1295 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1296 pic_param.CurrPic.frame_idx = current_frame_num;
1297 pic_param.CurrPic.flags = 0;
1298 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1299 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1300 CurrentCurrPic = pic_param.CurrPic;
1302 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1303 for (i = numShortTerm; i < MAX_NUM_REF1; i++) {
1304 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1305 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1308 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1309 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1310 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1311 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1312 pic_param.frame_num = current_frame_num;
1313 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1314 pic_param.last_picture = false; // FIXME
1315 pic_param.pic_init_qp = initial_qp;
1317 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1318 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1319 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1321 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1326 int H264EncoderImpl::render_packedsequence()
1328 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1329 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1330 unsigned int length_in_bits;
1331 unsigned char *packedseq_buffer = NULL;
1334 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1336 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1338 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1339 packedheader_param_buffer.has_emulation_bytes = 0;
1340 va_status = vaCreateBuffer(va_dpy,
1342 VAEncPackedHeaderParameterBufferType,
1343 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1344 &packedseq_para_bufid);
1345 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1347 va_status = vaCreateBuffer(va_dpy,
1349 VAEncPackedHeaderDataBufferType,
1350 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1351 &packedseq_data_bufid);
1352 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1354 render_id[0] = packedseq_para_bufid;
1355 render_id[1] = packedseq_data_bufid;
1356 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1358 free(packedseq_buffer);
1364 int H264EncoderImpl::render_packedpicture()
1366 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1367 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1368 unsigned int length_in_bits;
1369 unsigned char *packedpic_buffer = NULL;
1372 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1373 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1374 packedheader_param_buffer.bit_length = length_in_bits;
1375 packedheader_param_buffer.has_emulation_bytes = 0;
1377 va_status = vaCreateBuffer(va_dpy,
1379 VAEncPackedHeaderParameterBufferType,
1380 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1381 &packedpic_para_bufid);
1382 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1384 va_status = vaCreateBuffer(va_dpy,
1386 VAEncPackedHeaderDataBufferType,
1387 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1388 &packedpic_data_bufid);
1389 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1391 render_id[0] = packedpic_para_bufid;
1392 render_id[1] = packedpic_data_bufid;
1393 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1395 free(packedpic_buffer);
1400 void H264EncoderImpl::render_packedslice()
1402 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1403 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1404 unsigned int length_in_bits;
1405 unsigned char *packedslice_buffer = NULL;
1408 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1409 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1410 packedheader_param_buffer.bit_length = length_in_bits;
1411 packedheader_param_buffer.has_emulation_bytes = 0;
1413 va_status = vaCreateBuffer(va_dpy,
1415 VAEncPackedHeaderParameterBufferType,
1416 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1417 &packedslice_para_bufid);
1418 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1420 va_status = vaCreateBuffer(va_dpy,
1422 VAEncPackedHeaderDataBufferType,
1423 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1424 &packedslice_data_bufid);
1425 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1427 render_id[0] = packedslice_para_bufid;
1428 render_id[1] = packedslice_data_bufid;
1429 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1431 free(packedslice_buffer);
1434 int H264EncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1436 VABufferID slice_param_buf;
1440 update_RefPicList(frame_type);
1442 /* one frame, one slice */
1443 slice_param.macroblock_address = 0;
1444 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1445 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1446 if (frame_type == FRAME_IDR) {
1447 if (encoding_frame_num != 0)
1448 ++slice_param.idr_pic_id;
1449 } else if (frame_type == FRAME_P) {
1450 int refpiclist0_max = h264_maxref & 0xffff;
1451 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1453 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1454 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1455 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1457 } else if (frame_type == FRAME_B) {
1458 int refpiclist0_max = h264_maxref & 0xffff;
1459 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1461 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1462 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1463 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1464 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1467 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1468 for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1469 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1470 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1474 slice_param.slice_alpha_c0_offset_div2 = 0;
1475 slice_param.slice_beta_offset_div2 = 0;
1476 slice_param.direct_spatial_mv_pred_flag = 1;
1477 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1480 if (h264_packedheader &&
1481 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1482 render_packedslice();
1484 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1485 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1486 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1488 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1495 void H264EncoderImpl::save_codeddata(storage_task task)
1497 VACodedBufferSegment *buf_list = NULL;
1502 const int64_t global_delay = int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS); // So we never get negative dts.
1504 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1505 CHECK_VASTATUS(va_status, "vaMapBuffer");
1506 while (buf_list != NULL) {
1507 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1508 buf_list = (VACodedBufferSegment *) buf_list->next;
1510 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1515 memset(&pkt, 0, sizeof(pkt));
1517 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1518 pkt.size = data.size();
1519 pkt.stream_index = 0;
1520 if (task.frame_type == FRAME_IDR || task.frame_type == FRAME_I) {
1521 pkt.flags = AV_PKT_FLAG_KEY;
1526 httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay);
1528 // Encode and add all audio frames up to and including the pts of this video frame.
1531 vector<float> audio;
1533 unique_lock<mutex> lock(frame_queue_mutex);
1534 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1535 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1536 auto it = pending_audio_frames.begin();
1537 if (it->first > task.pts) break;
1538 audio_pts = it->first;
1539 audio = move(it->second);
1540 pending_audio_frames.erase(it);
1543 AVFrame *frame = av_frame_alloc();
1544 frame->nb_samples = audio.size() / 2;
1545 frame->format = AV_SAMPLE_FMT_S32;
1546 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(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 < 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, 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(frame);
1576 av_free_packet(&pkt);
1577 if (audio_pts == task.pts) break;
1581 printf("\r "); /* return back to startpoint */
1582 switch (encode_order % 4) {
1596 printf("%08lld", encode_order);
1601 // this is weird. but it seems to put a new frame onto the queue
1602 void H264EncoderImpl::storage_task_enqueue(storage_task task)
1604 unique_lock<mutex> lock(storage_task_queue_mutex);
1605 storage_task_queue.push(move(task));
1606 storage_task_queue_changed.notify_all();
1609 void H264EncoderImpl::storage_task_thread()
1612 storage_task current;
1614 // wait until there's an encoded frame
1615 unique_lock<mutex> lock(storage_task_queue_mutex);
1616 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1617 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1618 current = move(storage_task_queue.front());
1619 storage_task_queue.pop();
1624 // waits for data, then saves it to disk.
1625 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1626 CHECK_VASTATUS(va_status, "vaSyncSurface");
1627 save_codeddata(move(current));
1630 unique_lock<mutex> lock(storage_task_queue_mutex);
1631 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1632 storage_task_queue_changed.notify_all();
1637 int H264EncoderImpl::release_encode()
1639 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1640 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1641 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1642 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1644 if (!use_zerocopy) {
1645 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1646 glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1647 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1648 glDeleteBuffers(1, &gl_surfaces[i].pbo);
1650 glDeleteTextures(1, &gl_surfaces[i].y_tex);
1651 glDeleteTextures(1, &gl_surfaces[i].cbcr_tex);
1654 vaDestroyContext(va_dpy, context_id);
1655 vaDestroyConfig(va_dpy, config_id);
1660 int H264EncoderImpl::deinit_va()
1662 vaTerminate(va_dpy);
1664 va_close_display(va_dpy);
1670 H264EncoderImpl::H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
1671 : current_storage_frame(0), surface(surface), httpd(httpd)
1673 AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC);
1674 context_audio = avcodec_alloc_context3(codec_audio);
1675 context_audio->bit_rate = AUDIO_OUTPUT_BIT_RATE;
1676 context_audio->sample_rate = OUTPUT_FREQUENCY;
1677 context_audio->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT;
1678 context_audio->channels = 2;
1679 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1680 context_audio->time_base = AVRational{1, TIMEBASE};
1681 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1682 fprintf(stderr, "Could not open codec\n");
1686 frame_width = width;
1687 frame_height = height;
1688 frame_width_mbaligned = (frame_width + 15) & (~15);
1689 frame_height_mbaligned = (frame_height + 15) & (~15);
1693 init_va(va_display);
1696 // No frames are ready yet.
1697 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1699 memset(&seq_param, 0, sizeof(seq_param));
1700 memset(&pic_param, 0, sizeof(pic_param));
1701 memset(&slice_param, 0, sizeof(slice_param));
1703 storage_thread = thread(&H264EncoderImpl::storage_task_thread, this);
1705 encode_thread = thread([this]{
1706 //SDL_GL_MakeCurrent(window, context);
1707 QOpenGLContext *context = create_context(this->surface);
1708 eglBindAPI(EGL_OPENGL_API);
1709 if (!make_current(context, this->surface)) {
1710 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1714 encode_thread_func();
1718 H264EncoderImpl::~H264EncoderImpl()
1723 bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1725 assert(!is_shutdown);
1727 // Wait until this frame slot is done encoding.
1728 unique_lock<mutex> lock(storage_task_queue_mutex);
1729 if (srcsurface_status[current_storage_frame % SURFACE_NUM] != SRC_SURFACE_FREE) {
1730 fprintf(stderr, "Warning: Slot %d (for frame %d) is still encoding, rendering has to wait for H.264 encoder\n",
1731 current_storage_frame % SURFACE_NUM, current_storage_frame);
1733 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1734 srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
1735 if (storage_thread_should_quit) return false;
1738 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
1739 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1740 *y_tex = surf->y_tex;
1741 *cbcr_tex = surf->cbcr_tex;
1743 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
1744 CHECK_VASTATUS(va_status, "vaDeriveImage");
1747 VABufferInfo buf_info;
1748 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1749 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1750 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1753 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1754 EGLint y_attribs[] = {
1755 EGL_WIDTH, frame_width,
1756 EGL_HEIGHT, frame_height,
1757 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1758 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1759 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1760 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1764 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1765 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1767 // Associate Y image to a texture.
1768 glBindTexture(GL_TEXTURE_2D, *y_tex);
1769 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1771 // Create CbCr image.
1772 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1773 EGLint cbcr_attribs[] = {
1774 EGL_WIDTH, frame_width,
1775 EGL_HEIGHT, frame_height,
1776 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1777 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1778 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1779 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1783 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1784 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1786 // Associate CbCr image to a texture.
1787 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1788 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1794 void H264EncoderImpl::add_audio(int64_t pts, vector<float> audio)
1796 assert(!is_shutdown);
1798 unique_lock<mutex> lock(frame_queue_mutex);
1799 pending_audio_frames[pts] = move(audio);
1801 frame_queue_nonempty.notify_all();
1804 void H264EncoderImpl::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
1806 assert(!is_shutdown);
1808 if (!use_zerocopy) {
1809 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1811 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1814 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1817 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1819 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->y_offset));
1822 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1824 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->cbcr_offset));
1827 glBindTexture(GL_TEXTURE_2D, 0);
1829 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1832 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1834 fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1839 unique_lock<mutex> lock(frame_queue_mutex);
1840 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
1841 ++current_storage_frame;
1843 frame_queue_nonempty.notify_all();
1846 void H264EncoderImpl::shutdown()
1853 unique_lock<mutex> lock(frame_queue_mutex);
1854 encode_thread_should_quit = true;
1855 frame_queue_nonempty.notify_all();
1857 encode_thread.join();
1859 unique_lock<mutex> lock(storage_task_queue_mutex);
1860 storage_thread_should_quit = true;
1861 frame_queue_nonempty.notify_all();
1862 storage_task_queue_changed.notify_all();
1864 storage_thread.join();
1871 void H264EncoderImpl::encode_thread_func()
1873 int64_t last_dts = -1;
1874 int gop_start_display_frame_num = 0;
1875 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
1878 int frame_type, display_frame_num;
1879 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
1880 &display_frame_num, &frame_type, &pts_lag);
1881 if (frame_type == FRAME_IDR) {
1883 current_frame_num = 0;
1884 gop_start_display_frame_num = display_frame_num;
1888 unique_lock<mutex> lock(frame_queue_mutex);
1889 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
1890 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
1892 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
1893 // We have queued frames that were supposed to be B-frames,
1894 // but will be no P-frame to encode them against. Encode them all
1895 // as P-frames instead. Note that this happens under the mutex,
1896 // but nobody else uses it at this point, since we're shutting down,
1897 // so there's no contention.
1898 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
1901 frame = move(pending_video_frames[display_frame_num]);
1902 pending_video_frames.erase(display_frame_num);
1906 // Determine the dts of this frame.
1908 if (pts_lag == -1) {
1909 assert(last_dts != -1);
1910 dts = last_dts + (TIMEBASE / MAX_FPS);
1912 dts = frame.pts - pts_lag;
1916 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts);
1920 void H264EncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1922 if (pending_video_frames.empty()) {
1926 for (auto &pending_frame : pending_video_frames) {
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);
1939 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
1941 if (src_width == dst_pitch) {
1942 memcpy(dst, src, src_width * height);
1944 for (size_t y = 0; y < height; ++y) {
1945 const uint8_t *sptr = src + y * src_width;
1946 uint8_t *dptr = dst + y * dst_pitch;
1947 memcpy(dptr, sptr, src_width);
1954 void H264EncoderImpl::encode_frame(H264EncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
1955 int frame_type, int64_t pts, int64_t dts)
1957 // Wait for the GPU to be done with the frame.
1960 sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
1962 } while (sync_status == GL_TIMEOUT_EXPIRED);
1963 assert(sync_status != GL_WAIT_FAILED);
1965 // Release back any input frames we needed to render this frame.
1966 frame.input_frames.clear();
1968 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
1972 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
1973 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
1974 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
1975 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
1977 unsigned char *surface_p = nullptr;
1978 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
1980 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
1981 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
1983 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
1984 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
1986 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
1987 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
1990 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
1991 CHECK_VASTATUS(va_status, "vaDestroyImage");
1993 // Schedule the frame for encoding.
1994 VASurfaceID va_surface = surf->src_surface;
1995 va_status = vaBeginPicture(va_dpy, context_id, va_surface);
1996 CHECK_VASTATUS(va_status, "vaBeginPicture");
1998 if (frame_type == FRAME_IDR) {
2000 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2001 if (h264_packedheader) {
2002 render_packedsequence();
2003 render_packedpicture();
2006 //render_sequence();
2007 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2009 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2011 va_status = vaEndPicture(va_dpy, context_id);
2012 CHECK_VASTATUS(va_status, "vaEndPicture");
2014 // so now the data is done encoding (well, async job kicked off)...
2015 // we send that to the storage thread
2017 tmp.display_order = display_frame_num;
2018 tmp.frame_type = frame_type;
2021 storage_task_enqueue(move(tmp));
2023 update_ReferenceFrames(frame_type);
2027 H264Encoder::H264Encoder(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
2028 : impl(new H264EncoderImpl(surface, va_display, width, height, httpd)) {}
2030 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2031 H264Encoder::~H264Encoder() {}
2033 void H264Encoder::add_audio(int64_t pts, vector<float> audio)
2035 impl->add_audio(pts, audio);
2038 bool H264Encoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
2040 return impl->begin_frame(y_tex, cbcr_tex);
2043 void H264Encoder::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
2045 impl->end_frame(fence, pts, input_frames);
2048 void H264Encoder::shutdown()