2 #include "h264encode.h"
4 #include <EGL/eglplatform.h>
10 #include <libavcodec/avcodec.h>
11 #include <libavformat/avformat.h>
12 #include <libavutil/channel_layout.h>
13 #include <libavutil/frame.h>
14 #include <libavutil/rational.h>
15 #include <libavutil/samplefmt.h>
17 #include <libdrm/drm_fourcc.h>
22 #include <va/va_drmcommon.h>
23 #include <va/va_enc_h264.h>
24 #include <va/va_x11.h>
26 #include <condition_variable>
46 #define CHECK_VASTATUS(va_status, func) \
47 if (va_status != VA_STATUS_SUCCESS) { \
48 fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
52 //#include "loadsurface.h"
54 #define NAL_REF_IDC_NONE 0
55 #define NAL_REF_IDC_LOW 1
56 #define NAL_REF_IDC_MEDIUM 2
57 #define NAL_REF_IDC_HIGH 3
65 #define SLICE_TYPE_P 0
66 #define SLICE_TYPE_B 1
67 #define SLICE_TYPE_I 2
68 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
69 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
70 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
73 #define ENTROPY_MODE_CAVLC 0
74 #define ENTROPY_MODE_CABAC 1
76 #define PROFILE_IDC_BASELINE 66
77 #define PROFILE_IDC_MAIN 77
78 #define PROFILE_IDC_HIGH 100
80 #define BITSTREAM_ALLOCATE_STEPPING 4096
81 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
83 static constexpr unsigned int MaxFrameNum = (2<<16);
84 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
85 static constexpr unsigned int Log2MaxFrameNum = 16;
86 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
87 static constexpr int rc_default_modes[] = { // Priority list of modes.
90 VA_RC_VBR_CONSTRAINED,
96 /* thread to save coded data */
97 #define SRC_SURFACE_FREE 0
98 #define SRC_SURFACE_IN_ENCODING 1
101 unsigned int *buffer;
103 int max_size_in_dword;
105 typedef struct __bitstream bitstream;
109 class H264EncoderImpl {
111 H264EncoderImpl(QSurface *surface, int width, int height, HTTPD *httpd);
113 void add_audio(int64_t pts, vector<float> audio);
114 bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
115 void end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames);
119 struct storage_task {
120 unsigned long long display_order;
125 struct PendingFrame {
126 RefCountedGLsync fence;
127 vector<RefCountedFrame> input_frames;
131 void encode_thread_func();
132 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
133 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
134 int frame_type, int64_t pts, int64_t dts);
135 void storage_task_thread();
136 void storage_task_enqueue(storage_task task);
137 void save_codeddata(storage_task task);
138 int render_packedsequence();
139 int render_packedpicture();
140 void render_packedslice();
141 int render_sequence();
142 int render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num);
143 void sps_rbsp(bitstream *bs);
144 void pps_rbsp(bitstream *bs);
145 int build_packed_pic_buffer(unsigned char **header_buffer);
146 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
147 void slice_header(bitstream *bs);
148 int build_packed_seq_buffer(unsigned char **header_buffer);
149 int build_packed_slice_buffer(unsigned char **header_buffer);
152 VADisplay va_open_display(void);
153 void va_close_display(VADisplay va_dpy);
155 int release_encode();
156 void update_ReferenceFrames(int frame_type);
157 int update_RefPicList(int frame_type);
159 bool is_shutdown = false;
161 thread encode_thread, storage_thread;
163 mutex storage_task_queue_mutex;
164 condition_variable storage_task_queue_changed;
165 int srcsurface_status[SURFACE_NUM]; // protected by storage_task_queue_mutex
166 queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
167 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
169 mutex frame_queue_mutex;
170 condition_variable frame_queue_nonempty;
171 bool encode_thread_should_quit = false; // under frame_queue_mutex
173 int current_storage_frame;
175 map<int, PendingFrame> pending_video_frames; // under frame_queue_mutex
176 map<int64_t, vector<float>> pending_audio_frames; // under frame_queue_mutex
179 AVCodecContext *context_audio;
182 Display *x11_display;
185 // Encoder parameters
187 VAProfile h264_profile = (VAProfile)~0;
188 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
189 int config_attrib_num = 0, enc_packed_header_idx;
192 VASurfaceID src_surface, ref_surface;
193 VABufferID coded_buf;
195 VAImage surface_image;
196 GLuint y_tex, cbcr_tex;
197 EGLImage y_egl_image, cbcr_egl_image;
199 GLSurface gl_surfaces[SURFACE_NUM];
201 VAConfigID config_id;
202 VAContextID context_id;
203 VAEncSequenceParameterBufferH264 seq_param;
204 VAEncPictureParameterBufferH264 pic_param;
205 VAEncSliceParameterBufferH264 slice_param;
206 VAPictureH264 CurrentCurrPic;
207 VAPictureH264 ReferenceFrames[16], RefPicList0_P[32], RefPicList0_B[32], RefPicList1_B[32];
209 // Static quality settings.
210 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
211 static constexpr unsigned int num_ref_frames = 2;
212 static constexpr int initial_qp = 15;
213 static constexpr int minimal_qp = 0;
214 static constexpr int intra_period = 30;
215 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
217 // Quality settings that are meant to be static, but might be overridden
219 int constraint_set_flag = 0;
220 int h264_packedheader = 0; /* support pack header? */
221 int h264_maxref = (1<<16|1);
222 int h264_entropy_mode = 1; /* cabac */
226 unsigned int current_frame_num = 0;
227 unsigned int numShortTerm = 0;
231 int frame_width_mbaligned;
232 int frame_height_mbaligned;
235 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
236 // but if we don't delete it here, we get leaks. The GStreamer implementation
238 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
240 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
241 CHECK_VASTATUS(va_status, "vaRenderPicture");
243 for (int i = 0; i < num_buffers; ++i) {
244 va_status = vaDestroyBuffer(dpy, buffers[i]);
245 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
250 va_swap32(unsigned int val)
252 unsigned char *pval = (unsigned char *)&val;
254 return ((pval[0] << 24) |
261 bitstream_start(bitstream *bs)
263 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
264 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
269 bitstream_end(bitstream *bs)
271 int pos = (bs->bit_offset >> 5);
272 int bit_offset = (bs->bit_offset & 0x1f);
273 int bit_left = 32 - bit_offset;
276 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
281 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
283 int pos = (bs->bit_offset >> 5);
284 int bit_offset = (bs->bit_offset & 0x1f);
285 int bit_left = 32 - bit_offset;
290 bs->bit_offset += size_in_bits;
292 if (bit_left > size_in_bits) {
293 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
295 size_in_bits -= bit_left;
296 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
297 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
299 if (pos + 1 == bs->max_size_in_dword) {
300 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
301 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
304 bs->buffer[pos + 1] = val;
309 bitstream_put_ue(bitstream *bs, unsigned int val)
311 int size_in_bits = 0;
319 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
320 bitstream_put_ui(bs, val, size_in_bits);
324 bitstream_put_se(bitstream *bs, int val)
326 unsigned int new_val;
331 new_val = 2 * val - 1;
333 bitstream_put_ue(bs, new_val);
337 bitstream_byte_aligning(bitstream *bs, int bit)
339 int bit_offset = (bs->bit_offset & 0x7);
340 int bit_left = 8 - bit_offset;
346 assert(bit == 0 || bit == 1);
349 new_val = (1 << bit_left) - 1;
353 bitstream_put_ui(bs, new_val, bit_left);
357 rbsp_trailing_bits(bitstream *bs)
359 bitstream_put_ui(bs, 1, 1);
360 bitstream_byte_aligning(bs, 0);
363 static void nal_start_code_prefix(bitstream *bs)
365 bitstream_put_ui(bs, 0x00000001, 32);
368 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
370 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
371 bitstream_put_ui(bs, nal_ref_idc, 2);
372 bitstream_put_ui(bs, nal_unit_type, 5);
375 void H264EncoderImpl::sps_rbsp(bitstream *bs)
377 int profile_idc = PROFILE_IDC_BASELINE;
379 if (h264_profile == VAProfileH264High)
380 profile_idc = PROFILE_IDC_HIGH;
381 else if (h264_profile == VAProfileH264Main)
382 profile_idc = PROFILE_IDC_MAIN;
384 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
385 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
386 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
387 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
388 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
389 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
390 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
391 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
393 if ( profile_idc == PROFILE_IDC_HIGH) {
394 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
395 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
396 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
397 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
398 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
401 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
402 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
404 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
405 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
410 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
411 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
413 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
414 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
415 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
417 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
421 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
422 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
424 if (seq_param.frame_cropping_flag) {
425 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
426 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
427 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
428 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
431 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
433 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
435 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
436 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
437 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
438 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
440 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
441 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
442 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
444 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
445 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
446 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
449 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
450 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
452 bitstream_put_ui(bs, 1, 32); // FPS
453 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
454 bitstream_put_ui(bs, 1, 1);
456 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
459 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
460 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
461 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
463 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
464 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
465 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
467 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
468 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
469 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
470 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
472 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
473 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
475 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
476 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
479 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
483 void H264EncoderImpl::pps_rbsp(bitstream *bs)
485 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
486 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
488 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
490 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
492 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
494 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
495 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
497 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
498 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
500 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
501 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
502 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
504 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
505 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
506 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
509 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
510 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
511 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
513 rbsp_trailing_bits(bs);
516 void H264EncoderImpl::slice_header(bitstream *bs)
518 int first_mb_in_slice = slice_param.macroblock_address;
520 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
521 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
522 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
523 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
525 /* frame_mbs_only_flag == 1 */
526 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
531 if (pic_param.pic_fields.bits.idr_pic_flag)
532 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
534 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
535 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
536 /* pic_order_present_flag == 0 */
542 /* redundant_pic_cnt_present_flag == 0 */
544 if (IS_P_SLICE(slice_param.slice_type)) {
545 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
547 if (slice_param.num_ref_idx_active_override_flag)
548 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
550 /* ref_pic_list_reordering */
551 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
552 } else if (IS_B_SLICE(slice_param.slice_type)) {
553 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
555 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
557 if (slice_param.num_ref_idx_active_override_flag) {
558 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
559 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
562 /* ref_pic_list_reordering */
563 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
564 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
567 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
568 IS_P_SLICE(slice_param.slice_type)) ||
569 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
570 IS_B_SLICE(slice_param.slice_type))) {
571 /* FIXME: fill weight/offset table */
575 /* dec_ref_pic_marking */
576 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
577 unsigned char no_output_of_prior_pics_flag = 0;
578 unsigned char long_term_reference_flag = 0;
579 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
581 if (pic_param.pic_fields.bits.idr_pic_flag) {
582 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
583 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
585 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
589 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
590 !IS_I_SLICE(slice_param.slice_type))
591 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
593 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
595 /* ignore for SP/SI */
597 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
598 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
600 if (slice_param.disable_deblocking_filter_idc != 1) {
601 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
602 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
606 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
607 bitstream_byte_aligning(bs, 1);
611 int H264EncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
615 bitstream_start(&bs);
616 nal_start_code_prefix(&bs);
617 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
621 *header_buffer = (unsigned char *)bs.buffer;
622 return bs.bit_offset;
626 H264EncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
630 bitstream_start(&bs);
631 nal_start_code_prefix(&bs);
632 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
636 *header_buffer = (unsigned char *)bs.buffer;
637 return bs.bit_offset;
640 int H264EncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
643 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
644 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
646 bitstream_start(&bs);
647 nal_start_code_prefix(&bs);
649 if (IS_I_SLICE(slice_param.slice_type)) {
650 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
651 } else if (IS_P_SLICE(slice_param.slice_type)) {
652 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
654 assert(IS_B_SLICE(slice_param.slice_type));
655 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
661 *header_buffer = (unsigned char *)bs.buffer;
662 return bs.bit_offset;
667 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
668 1) period between Frame #X and Frame #N = #X - #N
669 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
670 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
671 4) intra_period and intra_idr_period take precedence over ip_period
672 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
673 of I/IDR frames, see bellow examples
674 -------------------------------------------------------------------
675 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
676 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
677 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
678 1 0 ignored IDRIIIIIII... (No IDR any more)
679 1 1 ignored IDR IDR IDR IDR...
680 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
681 >=2 0 1 IDRPPP IPPP I... (3/0/1)
682 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
683 (PBB)(IBB)(PBB)(IBB)...
684 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
685 IDRPPPPP IPPPPP IPPPPP...
686 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
687 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
688 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
689 {IDR(PBB)(PBB)(IBB)(PBB)}...
690 {IDR(PBB)(PBB)} (6/6/3)
694 // General pts/dts strategy:
696 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
697 // bit tricky. We assume first of all that the frame rate never goes _above_
698 // MAX_FPS, which gives us a frame period N. The decoder can always decode
699 // in at least this speed, as long at dts <= pts (the frame is not attempted
700 // presented before it is decoded). Furthermore, we never have longer chains of
701 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
702 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
703 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
704 // frame, with an order O <= C.)
706 // Many strategies are possible, but we establish these rules:
708 // - Tip frames have dts = pts - (C-O)*N.
709 // - Non-tip frames have dts = dts_last + N.
711 // An example, with C=2 and N=10 and the data flow showed with arrows:
714 // pts: 30 40 50 60 70 80
716 // dts: 10 30 20 60 50←40
721 // To show that this works fine also with irregular spacings, let's say that
722 // the third frame is delayed a bit (something earlier was dropped). Now the
723 // situation looks like this:
726 // pts: 30 40 80 90 100 110
728 // dts: 10 30 20 90 50←40
733 // The resetting on every tip frame makes sure dts never ends up lagging a lot
734 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
736 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
737 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
738 // a tip frame and should be given a dts based on the previous one.
743 void encoding2display_order(
744 int encoding_order, int intra_period,
745 int intra_idr_period, int ip_period,
746 int *displaying_order,
747 int *frame_type, int *pts_lag)
749 int encoding_order_gop = 0;
753 if (intra_period == 1) { /* all are I/IDR frames */
754 *displaying_order = encoding_order;
755 if (intra_idr_period == 0)
756 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
758 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
762 if (intra_period == 0)
763 intra_idr_period = 0;
765 if (ip_period == 1) {
766 // No B-frames, sequence is like IDR PPPPP IPPPPP.
767 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
768 *displaying_order = encoding_order;
770 if (encoding_order_gop == 0) { /* the first frame */
771 *frame_type = FRAME_IDR;
772 } else if (intra_period != 0 && /* have I frames */
773 encoding_order_gop >= 2 &&
774 (encoding_order_gop % intra_period == 0)) {
775 *frame_type = FRAME_I;
777 *frame_type = FRAME_P;
782 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
783 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
784 *pts_lag = -1; // Most frames are not tip frames.
786 if (encoding_order_gop == 0) { /* the first frame */
787 *frame_type = FRAME_IDR;
788 *displaying_order = encoding_order;
789 // IDR frames are a special case; I honestly can't find the logic behind
790 // why this is the right thing, but it seems to line up nicely in practice :-)
791 *pts_lag = TIMEBASE / MAX_FPS;
792 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
793 *frame_type = FRAME_B;
794 *displaying_order = encoding_order - 1;
795 if ((encoding_order_gop % ip_period) == 0) {
796 *pts_lag = 0; // Last B-frame.
798 } else if (intra_period != 0 && /* have I frames */
799 encoding_order_gop >= 2 &&
800 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
801 *frame_type = FRAME_I;
802 *displaying_order = encoding_order + ip_period - 1;
804 *frame_type = FRAME_P;
805 *displaying_order = encoding_order + ip_period - 1;
810 static const char *rc_to_string(int rc_mode)
823 case VA_RC_VBR_CONSTRAINED:
824 return "VBR_CONSTRAINED";
830 VADisplay H264EncoderImpl::va_open_display(void)
832 x11_display = XOpenDisplay(NULL);
834 fprintf(stderr, "error: can't connect to X server!\n");
837 return vaGetDisplay(x11_display);
840 void H264EncoderImpl::va_close_display(VADisplay va_dpy)
846 XUnmapWindow(x11_display, x11_window);
847 XDestroyWindow(x11_display, x11_window);
850 XCloseDisplay(x11_display);
854 int H264EncoderImpl::init_va()
856 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
857 VAEntrypoint *entrypoints;
858 int num_entrypoints, slice_entrypoint;
859 int support_encode = 0;
860 int major_ver, minor_ver;
864 va_dpy = va_open_display();
865 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
866 CHECK_VASTATUS(va_status, "vaInitialize");
868 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
869 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
871 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
875 /* use the highest profile */
876 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
877 if ((h264_profile != ~0) && h264_profile != profile_list[i])
880 h264_profile = profile_list[i];
881 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
882 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
883 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
888 if (support_encode == 1)
892 if (support_encode == 0) {
893 printf("Can't find VAEntrypointEncSlice for H264 profiles\n");
896 switch (h264_profile) {
897 case VAProfileH264Baseline:
899 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
900 h264_entropy_mode = 0;
902 case VAProfileH264ConstrainedBaseline:
903 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
907 case VAProfileH264Main:
908 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
911 case VAProfileH264High:
912 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
915 h264_profile = VAProfileH264Baseline;
917 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
922 VAConfigAttrib attrib[VAConfigAttribTypeMax];
924 /* find out the format for the render target, and rate control mode */
925 for (i = 0; i < VAConfigAttribTypeMax; i++)
926 attrib[i].type = (VAConfigAttribType)i;
928 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
929 &attrib[0], VAConfigAttribTypeMax);
930 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
931 /* check the interested configattrib */
932 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
933 printf("Not find desired YUV420 RT format\n");
936 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
937 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
941 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
942 int tmp = attrib[VAConfigAttribRateControl].value;
944 if (rc_mode == -1 || !(rc_mode & tmp)) {
946 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
949 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
950 if (rc_default_modes[i] & tmp) {
951 rc_mode = rc_default_modes[i];
957 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
958 config_attrib[config_attrib_num].value = rc_mode;
963 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
964 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
966 h264_packedheader = 1;
967 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
968 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
970 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
971 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
974 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
975 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
978 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
979 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
982 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
983 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
986 enc_packed_header_idx = config_attrib_num;
990 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
991 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
992 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
996 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
997 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
1004 int H264EncoderImpl::setup_encode()
1007 VASurfaceID *tmp_surfaceid;
1008 int codedbuf_size, i;
1009 static VASurfaceID src_surface[SURFACE_NUM];
1010 static VASurfaceID ref_surface[SURFACE_NUM];
1012 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
1013 &config_attrib[0], config_attrib_num, &config_id);
1014 CHECK_VASTATUS(va_status, "vaCreateConfig");
1016 /* create source surfaces */
1017 va_status = vaCreateSurfaces(va_dpy,
1018 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1019 &src_surface[0], SURFACE_NUM,
1021 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1023 /* create reference surfaces */
1024 va_status = vaCreateSurfaces(va_dpy,
1025 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1026 &ref_surface[0], SURFACE_NUM,
1028 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1030 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
1031 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
1032 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
1034 /* Create a context for this encode pipe */
1035 va_status = vaCreateContext(va_dpy, config_id,
1036 frame_width_mbaligned, frame_height_mbaligned,
1038 tmp_surfaceid, 2 * SURFACE_NUM,
1040 CHECK_VASTATUS(va_status, "vaCreateContext");
1041 free(tmp_surfaceid);
1043 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
1045 for (i = 0; i < SURFACE_NUM; i++) {
1046 /* create coded buffer once for all
1047 * other VA buffers which won't be used again after vaRenderPicture.
1048 * so APP can always vaCreateBuffer for every frame
1049 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
1050 * so VA won't maintain the coded buffer
1052 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
1053 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
1054 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1057 /* create OpenGL objects */
1058 //glGenFramebuffers(SURFACE_NUM, fbos);
1060 for (i = 0; i < SURFACE_NUM; i++) {
1061 glGenTextures(1, &gl_surfaces[i].y_tex);
1062 glGenTextures(1, &gl_surfaces[i].cbcr_tex);
1065 for (i = 0; i < SURFACE_NUM; i++) {
1066 gl_surfaces[i].src_surface = src_surface[i];
1067 gl_surfaces[i].ref_surface = ref_surface[i];
1073 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1076 template<class T, class C>
1077 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1079 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1080 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1081 sort(middle, end, less_than);
1084 void H264EncoderImpl::update_ReferenceFrames(int frame_type)
1088 if (frame_type == FRAME_B)
1091 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1093 if (numShortTerm > num_ref_frames)
1094 numShortTerm = num_ref_frames;
1095 for (i=numShortTerm-1; i>0; i--)
1096 ReferenceFrames[i] = ReferenceFrames[i-1];
1097 ReferenceFrames[0] = CurrentCurrPic;
1099 current_frame_num++;
1100 if (current_frame_num > MaxFrameNum)
1101 current_frame_num = 0;
1105 int H264EncoderImpl::update_RefPicList(int frame_type)
1107 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1108 return a.frame_idx > b.frame_idx;
1110 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1111 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1113 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1114 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1117 if (frame_type == FRAME_P) {
1118 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1119 sort(&RefPicList0_P[0], &RefPicList0_P[numShortTerm], descending_by_frame_idx);
1120 } else if (frame_type == FRAME_B) {
1121 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1122 sort_two(&RefPicList0_B[0], &RefPicList0_B[numShortTerm], CurrentCurrPic, ascending_by_top_field_order_cnt);
1124 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1125 sort_two(&RefPicList1_B[0], &RefPicList1_B[numShortTerm], CurrentCurrPic, descending_by_top_field_order_cnt);
1132 int H264EncoderImpl::render_sequence()
1134 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1136 VAEncMiscParameterBuffer *misc_param;
1137 VAEncMiscParameterRateControl *misc_rate_ctrl;
1139 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1140 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1141 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1142 seq_param.bits_per_second = frame_bitrate;
1144 seq_param.intra_period = intra_period;
1145 seq_param.intra_idr_period = intra_idr_period;
1146 seq_param.ip_period = ip_period;
1148 seq_param.max_num_ref_frames = num_ref_frames;
1149 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1150 seq_param.time_scale = TIMEBASE * 2;
1151 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1152 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1153 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1154 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1155 seq_param.seq_fields.bits.chroma_format_idc = 1;
1156 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1158 if (frame_width != frame_width_mbaligned ||
1159 frame_height != frame_height_mbaligned) {
1160 seq_param.frame_cropping_flag = 1;
1161 seq_param.frame_crop_left_offset = 0;
1162 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1163 seq_param.frame_crop_top_offset = 0;
1164 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1167 va_status = vaCreateBuffer(va_dpy, context_id,
1168 VAEncSequenceParameterBufferType,
1169 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1170 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1172 va_status = vaCreateBuffer(va_dpy, context_id,
1173 VAEncMiscParameterBufferType,
1174 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1175 1, NULL, &rc_param_buf);
1176 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1178 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1179 misc_param->type = VAEncMiscParameterTypeRateControl;
1180 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1181 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1182 misc_rate_ctrl->bits_per_second = frame_bitrate;
1183 misc_rate_ctrl->target_percentage = 66;
1184 misc_rate_ctrl->window_size = 1000;
1185 misc_rate_ctrl->initial_qp = initial_qp;
1186 misc_rate_ctrl->min_qp = minimal_qp;
1187 misc_rate_ctrl->basic_unit_size = 0;
1188 vaUnmapBuffer(va_dpy, rc_param_buf);
1190 render_id[0] = seq_param_buf;
1191 render_id[1] = rc_param_buf;
1193 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1198 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1200 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1201 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1202 int PicOrderCntMsb, TopFieldOrderCnt;
1204 if (frame_type == FRAME_IDR)
1205 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1207 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1208 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1211 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1212 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1213 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1214 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1215 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1216 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1218 PicOrderCntMsb = prevPicOrderCntMsb;
1220 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1222 if (frame_type != FRAME_B) {
1223 PicOrderCntMsb_ref = PicOrderCntMsb;
1224 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1227 return TopFieldOrderCnt;
1230 int H264EncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1232 VABufferID pic_param_buf;
1236 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1237 pic_param.CurrPic.frame_idx = current_frame_num;
1238 pic_param.CurrPic.flags = 0;
1239 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1240 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1241 CurrentCurrPic = pic_param.CurrPic;
1243 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1244 for (i = numShortTerm; i < SURFACE_NUM; i++) {
1245 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1246 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1249 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1250 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1251 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1252 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1253 pic_param.frame_num = current_frame_num;
1254 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1255 pic_param.last_picture = false; // FIXME
1256 pic_param.pic_init_qp = initial_qp;
1258 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1259 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1260 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1262 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1267 int H264EncoderImpl::render_packedsequence()
1269 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1270 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1271 unsigned int length_in_bits;
1272 unsigned char *packedseq_buffer = NULL;
1275 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1277 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1279 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1280 packedheader_param_buffer.has_emulation_bytes = 0;
1281 va_status = vaCreateBuffer(va_dpy,
1283 VAEncPackedHeaderParameterBufferType,
1284 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1285 &packedseq_para_bufid);
1286 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1288 va_status = vaCreateBuffer(va_dpy,
1290 VAEncPackedHeaderDataBufferType,
1291 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1292 &packedseq_data_bufid);
1293 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1295 render_id[0] = packedseq_para_bufid;
1296 render_id[1] = packedseq_data_bufid;
1297 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1299 free(packedseq_buffer);
1305 int H264EncoderImpl::render_packedpicture()
1307 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1308 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1309 unsigned int length_in_bits;
1310 unsigned char *packedpic_buffer = NULL;
1313 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1314 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1315 packedheader_param_buffer.bit_length = length_in_bits;
1316 packedheader_param_buffer.has_emulation_bytes = 0;
1318 va_status = vaCreateBuffer(va_dpy,
1320 VAEncPackedHeaderParameterBufferType,
1321 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1322 &packedpic_para_bufid);
1323 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1325 va_status = vaCreateBuffer(va_dpy,
1327 VAEncPackedHeaderDataBufferType,
1328 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1329 &packedpic_data_bufid);
1330 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1332 render_id[0] = packedpic_para_bufid;
1333 render_id[1] = packedpic_data_bufid;
1334 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1336 free(packedpic_buffer);
1341 void H264EncoderImpl::render_packedslice()
1343 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1344 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1345 unsigned int length_in_bits;
1346 unsigned char *packedslice_buffer = NULL;
1349 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1350 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1351 packedheader_param_buffer.bit_length = length_in_bits;
1352 packedheader_param_buffer.has_emulation_bytes = 0;
1354 va_status = vaCreateBuffer(va_dpy,
1356 VAEncPackedHeaderParameterBufferType,
1357 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1358 &packedslice_para_bufid);
1359 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1361 va_status = vaCreateBuffer(va_dpy,
1363 VAEncPackedHeaderDataBufferType,
1364 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1365 &packedslice_data_bufid);
1366 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1368 render_id[0] = packedslice_para_bufid;
1369 render_id[1] = packedslice_data_bufid;
1370 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1372 free(packedslice_buffer);
1375 int H264EncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1377 VABufferID slice_param_buf;
1381 update_RefPicList(frame_type);
1383 /* one frame, one slice */
1384 slice_param.macroblock_address = 0;
1385 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1386 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1387 if (frame_type == FRAME_IDR) {
1388 if (encoding_frame_num != 0)
1389 ++slice_param.idr_pic_id;
1390 } else if (frame_type == FRAME_P) {
1391 int refpiclist0_max = h264_maxref & 0xffff;
1392 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1394 for (i = refpiclist0_max; i < 32; i++) {
1395 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1396 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1398 } else if (frame_type == FRAME_B) {
1399 int refpiclist0_max = h264_maxref & 0xffff;
1400 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1402 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1403 for (i = refpiclist0_max; i < 32; i++) {
1404 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1405 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1408 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1409 for (i = refpiclist1_max; i < 32; i++) {
1410 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1411 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1415 slice_param.slice_alpha_c0_offset_div2 = 0;
1416 slice_param.slice_beta_offset_div2 = 0;
1417 slice_param.direct_spatial_mv_pred_flag = 1;
1418 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1421 if (h264_packedheader &&
1422 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1423 render_packedslice();
1425 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1426 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1427 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1429 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1436 void H264EncoderImpl::save_codeddata(storage_task task)
1438 VACodedBufferSegment *buf_list = NULL;
1443 const int64_t global_delay = (ip_period - 1) * (TIMEBASE / MAX_FPS); // So we never get negative dts.
1445 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1446 CHECK_VASTATUS(va_status, "vaMapBuffer");
1447 while (buf_list != NULL) {
1448 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1449 buf_list = (VACodedBufferSegment *) buf_list->next;
1451 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1456 memset(&pkt, 0, sizeof(pkt));
1458 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1459 pkt.size = data.size();
1460 pkt.stream_index = 0;
1461 if (task.frame_type == FRAME_IDR || task.frame_type == FRAME_I) {
1462 pkt.flags = AV_PKT_FLAG_KEY;
1467 httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay);
1469 // Encode and add all audio frames up to and including the pts of this video frame.
1472 vector<float> audio;
1474 unique_lock<mutex> lock(frame_queue_mutex);
1475 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1476 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1477 auto it = pending_audio_frames.begin();
1478 if (it->first > task.pts) break;
1479 audio_pts = it->first;
1480 audio = move(it->second);
1481 pending_audio_frames.erase(it);
1484 AVFrame *frame = avcodec_alloc_frame();
1485 frame->nb_samples = audio.size() / 2;
1486 frame->format = AV_SAMPLE_FMT_S32;
1487 frame->channel_layout = AV_CH_LAYOUT_STEREO;
1489 unique_ptr<int32_t[]> int_samples(new int32_t[audio.size()]);
1490 int ret = avcodec_fill_audio_frame(frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
1492 fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
1495 for (int i = 0; i < frame->nb_samples * 2; ++i) {
1496 if (audio[i] >= 1.0f) {
1497 int_samples[i] = 2147483647;
1498 } else if (audio[i] <= -1.0f) {
1499 int_samples[i] = -2147483647;
1501 int_samples[i] = lrintf(audio[i] * 2147483647.0f);
1506 av_init_packet(&pkt);
1510 avcodec_encode_audio2(context_audio, &pkt, frame, &got_output);
1512 pkt.stream_index = 1;
1513 httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay);
1515 // TODO: Delayed frames.
1516 avcodec_free_frame(&frame);
1517 av_free_packet(&pkt);
1518 if (audio_pts == task.pts) break;
1522 printf("\r "); /* return back to startpoint */
1523 switch (encode_order % 4) {
1537 printf("%08lld", encode_order);
1542 // this is weird. but it seems to put a new frame onto the queue
1543 void H264EncoderImpl::storage_task_enqueue(storage_task task)
1545 unique_lock<mutex> lock(storage_task_queue_mutex);
1546 storage_task_queue.push(move(task));
1547 srcsurface_status[task.display_order % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
1548 storage_task_queue_changed.notify_all();
1551 void H264EncoderImpl::storage_task_thread()
1554 storage_task current;
1556 // wait until there's an encoded frame
1557 unique_lock<mutex> lock(storage_task_queue_mutex);
1558 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1559 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1560 current = move(storage_task_queue.front());
1561 storage_task_queue.pop();
1566 // waits for data, then saves it to disk.
1567 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1568 CHECK_VASTATUS(va_status, "vaSyncSurface");
1569 save_codeddata(move(current));
1572 unique_lock<mutex> lock(storage_task_queue_mutex);
1573 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1574 storage_task_queue_changed.notify_all();
1579 int H264EncoderImpl::release_encode()
1583 for (i = 0; i < SURFACE_NUM; i++) {
1584 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1585 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1586 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1589 vaDestroyContext(va_dpy, context_id);
1590 vaDestroyConfig(va_dpy, config_id);
1595 int H264EncoderImpl::deinit_va()
1597 vaTerminate(va_dpy);
1599 va_close_display(va_dpy);
1605 H264EncoderImpl::H264EncoderImpl(QSurface *surface, int width, int height, HTTPD *httpd)
1606 : current_storage_frame(0), surface(surface), httpd(httpd)
1608 AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC);
1609 context_audio = avcodec_alloc_context3(codec_audio);
1610 context_audio->bit_rate = AUDIO_OUTPUT_BIT_RATE;
1611 context_audio->sample_rate = OUTPUT_FREQUENCY;
1612 context_audio->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT;
1613 context_audio->channels = 2;
1614 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1615 context_audio->time_base = AVRational{1, TIMEBASE};
1616 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1617 fprintf(stderr, "Could not open codec\n");
1621 frame_width = width;
1622 frame_height = height;
1623 frame_width_mbaligned = (frame_width + 15) & (~15);
1624 frame_height_mbaligned = (frame_height + 15) & (~15);
1631 // No frames are ready yet.
1632 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1634 memset(&seq_param, 0, sizeof(seq_param));
1635 memset(&pic_param, 0, sizeof(pic_param));
1636 memset(&slice_param, 0, sizeof(slice_param));
1638 storage_thread = thread(&H264EncoderImpl::storage_task_thread, this);
1640 encode_thread = thread([this]{
1641 //SDL_GL_MakeCurrent(window, context);
1642 QOpenGLContext *context = create_context(this->surface);
1643 eglBindAPI(EGL_OPENGL_API);
1644 if (!make_current(context, this->surface)) {
1645 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1649 encode_thread_func();
1653 H264EncoderImpl::~H264EncoderImpl()
1658 bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1660 assert(!is_shutdown);
1662 // Wait until this frame slot is done encoding.
1663 unique_lock<mutex> lock(storage_task_queue_mutex);
1664 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1665 if (storage_thread_should_quit) return false;
1668 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
1669 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1670 *y_tex = surf->y_tex;
1671 *cbcr_tex = surf->cbcr_tex;
1673 VASurfaceID surface = surf->src_surface;
1674 VAStatus va_status = vaDeriveImage(va_dpy, surface, &surf->surface_image);
1675 CHECK_VASTATUS(va_status, "vaDeriveImage");
1677 VABufferInfo buf_info;
1678 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1679 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1680 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1683 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1684 EGLint y_attribs[] = {
1685 EGL_WIDTH, frame_width,
1686 EGL_HEIGHT, frame_height,
1687 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1688 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1689 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1690 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1694 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1695 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1697 // Associate Y image to a texture.
1698 glBindTexture(GL_TEXTURE_2D, *y_tex);
1699 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1701 // Create CbCr image.
1702 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1703 EGLint cbcr_attribs[] = {
1704 EGL_WIDTH, frame_width,
1705 EGL_HEIGHT, frame_height,
1706 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1707 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1708 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1709 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1713 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1714 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1716 // Associate CbCr image to a texture.
1717 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1718 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1723 void H264EncoderImpl::add_audio(int64_t pts, vector<float> audio)
1725 assert(!is_shutdown);
1727 unique_lock<mutex> lock(frame_queue_mutex);
1728 pending_audio_frames[pts] = move(audio);
1730 frame_queue_nonempty.notify_all();
1733 void H264EncoderImpl::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
1735 assert(!is_shutdown);
1737 unique_lock<mutex> lock(frame_queue_mutex);
1738 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
1739 ++current_storage_frame;
1741 frame_queue_nonempty.notify_all();
1744 void H264EncoderImpl::shutdown()
1751 unique_lock<mutex> lock(frame_queue_mutex);
1752 encode_thread_should_quit = true;
1753 frame_queue_nonempty.notify_all();
1755 encode_thread.join();
1757 unique_lock<mutex> lock(storage_task_queue_mutex);
1758 storage_thread_should_quit = true;
1759 frame_queue_nonempty.notify_all();
1760 storage_task_queue_changed.notify_all();
1762 storage_thread.join();
1769 void H264EncoderImpl::encode_thread_func()
1771 int64_t last_dts = -1;
1772 int gop_start_display_frame_num = 0;
1773 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
1776 int frame_type, display_frame_num;
1777 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
1778 &display_frame_num, &frame_type, &pts_lag);
1779 if (frame_type == FRAME_IDR) {
1781 current_frame_num = 0;
1782 gop_start_display_frame_num = display_frame_num;
1786 unique_lock<mutex> lock(frame_queue_mutex);
1787 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
1788 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
1790 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
1791 // We have queued frames that were supposed to be B-frames,
1792 // but will be no P-frame to encode them against. Encode them all
1793 // as P-frames instead. Note that this happens under the mutex,
1794 // but nobody else uses it at this point, since we're shutting down,
1795 // so there's no contention.
1796 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
1799 frame = move(pending_video_frames[display_frame_num]);
1800 pending_video_frames.erase(display_frame_num);
1804 // Determine the dts of this frame.
1806 if (pts_lag == -1) {
1807 assert(last_dts != -1);
1808 dts = last_dts + (TIMEBASE / MAX_FPS);
1810 dts = frame.pts - pts_lag;
1814 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts);
1818 void H264EncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1820 if (pending_video_frames.empty()) {
1824 for (auto &pending_frame : pending_video_frames) {
1825 int display_frame_num = pending_frame.first;
1826 assert(display_frame_num > 0);
1827 PendingFrame frame = move(pending_frame.second);
1828 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
1829 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
1830 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
1835 void H264EncoderImpl::encode_frame(H264EncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
1836 int frame_type, int64_t pts, int64_t dts)
1838 // Wait for the GPU to be done with the frame.
1839 glClientWaitSync(frame.fence.get(), 0, 0);
1841 // Release back any input frames we needed to render this frame.
1842 frame.input_frames.clear();
1845 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
1846 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
1847 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
1848 VAStatus va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
1849 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
1850 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
1851 CHECK_VASTATUS(va_status, "vaDestroyImage");
1853 VASurfaceID surface = surf->src_surface;
1855 // Schedule the frame for encoding.
1856 va_status = vaBeginPicture(va_dpy, context_id, surface);
1857 CHECK_VASTATUS(va_status, "vaBeginPicture");
1859 if (frame_type == FRAME_IDR) {
1861 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
1862 if (h264_packedheader) {
1863 render_packedsequence();
1864 render_packedpicture();
1867 //render_sequence();
1868 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
1870 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
1872 va_status = vaEndPicture(va_dpy, context_id);
1873 CHECK_VASTATUS(va_status, "vaEndPicture");
1875 // so now the data is done encoding (well, async job kicked off)...
1876 // we send that to the storage thread
1878 tmp.display_order = display_frame_num;
1879 tmp.frame_type = frame_type;
1882 storage_task_enqueue(move(tmp));
1884 update_ReferenceFrames(frame_type);
1888 H264Encoder::H264Encoder(QSurface *surface, int width, int height, HTTPD *httpd)
1889 : impl(new H264EncoderImpl(surface, width, height, httpd)) {}
1891 // Must be defined here because unique_ptr<> destructor needs to know the impl.
1892 H264Encoder::~H264Encoder() {}
1894 void H264Encoder::add_audio(int64_t pts, vector<float> audio)
1896 impl->add_audio(pts, audio);
1899 bool H264Encoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1901 return impl->begin_frame(y_tex, cbcr_tex);
1904 void H264Encoder::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
1906 impl->end_frame(fence, pts, input_frames);
1909 void H264Encoder::shutdown()