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>
25 #include <condition_variable>
45 #define CHECK_VASTATUS(va_status, func) \
46 if (va_status != VA_STATUS_SUCCESS) { \
47 fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
51 //#include "loadsurface.h"
53 #define NAL_REF_IDC_NONE 0
54 #define NAL_REF_IDC_LOW 1
55 #define NAL_REF_IDC_MEDIUM 2
56 #define NAL_REF_IDC_HIGH 3
64 #define SLICE_TYPE_P 0
65 #define SLICE_TYPE_B 1
66 #define SLICE_TYPE_I 2
67 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
68 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
69 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
72 #define ENTROPY_MODE_CAVLC 0
73 #define ENTROPY_MODE_CABAC 1
75 #define PROFILE_IDC_BASELINE 66
76 #define PROFILE_IDC_MAIN 77
77 #define PROFILE_IDC_HIGH 100
79 #define BITSTREAM_ALLOCATE_STEPPING 4096
80 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
82 static constexpr unsigned int MaxFrameNum = (2<<16);
83 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
84 static constexpr unsigned int Log2MaxFrameNum = 16;
85 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
86 static constexpr int rc_default_modes[] = { // Priority list of modes.
89 VA_RC_VBR_CONSTRAINED,
95 /* thread to save coded data */
96 #define SRC_SURFACE_FREE 0
97 #define SRC_SURFACE_IN_ENCODING 1
100 unsigned int *buffer;
102 int max_size_in_dword;
104 typedef struct __bitstream bitstream;
108 class H264EncoderImpl {
110 H264EncoderImpl(QSurface *surface, int width, int height, HTTPD *httpd);
112 void add_audio(int64_t pts, std::vector<float> audio); // Needs to come before end_frame() of same pts.
113 bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
114 void end_frame(RefCountedGLsync fence, int64_t pts, const std::vector<RefCountedFrame> &input_frames);
117 struct storage_task {
118 unsigned long long display_order;
120 std::vector<float> audio;
123 struct PendingFrame {
124 RefCountedGLsync fence;
125 std::vector<RefCountedFrame> input_frames;
129 void encode_thread_func();
130 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
131 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
132 int frame_type, int64_t pts, int64_t dts);
133 void storage_task_thread();
134 void storage_task_enqueue(storage_task task);
135 void save_codeddata(storage_task task);
136 int render_packedsequence();
137 int render_packedpicture();
138 void render_packedslice();
139 int render_sequence();
140 int render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num);
141 void sps_rbsp(bitstream *bs);
142 void pps_rbsp(bitstream *bs);
143 int build_packed_pic_buffer(unsigned char **header_buffer);
144 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
145 void slice_header(bitstream *bs);
146 int build_packed_seq_buffer(unsigned char **header_buffer);
147 int build_packed_slice_buffer(unsigned char **header_buffer);
150 VADisplay va_open_display(void);
151 void va_close_display(VADisplay va_dpy);
153 int release_encode();
154 void update_ReferenceFrames(int frame_type);
155 int update_RefPicList(int frame_type);
157 std::thread encode_thread, storage_thread;
159 std::mutex storage_task_queue_mutex;
160 std::condition_variable storage_task_queue_changed;
161 int srcsurface_status[SURFACE_NUM]; // protected by storage_task_queue_mutex
162 std::queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
163 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
165 std::mutex frame_queue_mutex;
166 std::condition_variable frame_queue_nonempty;
167 bool encode_thread_should_quit = false; // under frame_queue_mutex
169 int current_storage_frame;
171 std::map<int, PendingFrame> pending_video_frames; // under frame_queue_mutex
172 std::map<int64_t, std::vector<float>> pending_audio_frames; // under frame_queue_mutex
175 AVCodecContext *context_audio;
178 Display *x11_display;
181 // Encoder parameters
183 VAProfile h264_profile = (VAProfile)~0;
184 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
185 int config_attrib_num = 0, enc_packed_header_idx;
188 VASurfaceID src_surface, ref_surface;
189 VABufferID coded_buf;
191 VAImage surface_image;
192 GLuint y_tex, cbcr_tex;
193 EGLImage y_egl_image, cbcr_egl_image;
195 GLSurface gl_surfaces[SURFACE_NUM];
197 VAConfigID config_id;
198 VAContextID context_id;
199 VAEncSequenceParameterBufferH264 seq_param;
200 VAEncPictureParameterBufferH264 pic_param;
201 VAEncSliceParameterBufferH264 slice_param;
202 VAPictureH264 CurrentCurrPic;
203 VAPictureH264 ReferenceFrames[16], RefPicList0_P[32], RefPicList0_B[32], RefPicList1_B[32];
205 // Static quality settings.
206 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
207 static constexpr unsigned int num_ref_frames = 2;
208 static constexpr int initial_qp = 15;
209 static constexpr int minimal_qp = 0;
210 static constexpr int intra_period = 30;
211 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
213 // Quality settings that are meant to be static, but might be overridden
215 int constraint_set_flag = 0;
216 int h264_packedheader = 0; /* support pack header? */
217 int h264_maxref = (1<<16|1);
218 int h264_entropy_mode = 1; /* cabac */
222 unsigned int current_frame_num = 0;
223 unsigned int numShortTerm = 0;
227 int frame_width_mbaligned;
228 int frame_height_mbaligned;
232 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
233 // but if we don't delete it here, we get leaks. The GStreamer implementation
235 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
237 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
238 CHECK_VASTATUS(va_status, "vaRenderPicture");
240 for (int i = 0; i < num_buffers; ++i) {
241 va_status = vaDestroyBuffer(dpy, buffers[i]);
242 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
247 va_swap32(unsigned int val)
249 unsigned char *pval = (unsigned char *)&val;
251 return ((pval[0] << 24) |
258 bitstream_start(bitstream *bs)
260 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
261 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
266 bitstream_end(bitstream *bs)
268 int pos = (bs->bit_offset >> 5);
269 int bit_offset = (bs->bit_offset & 0x1f);
270 int bit_left = 32 - bit_offset;
273 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
278 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
280 int pos = (bs->bit_offset >> 5);
281 int bit_offset = (bs->bit_offset & 0x1f);
282 int bit_left = 32 - bit_offset;
287 bs->bit_offset += size_in_bits;
289 if (bit_left > size_in_bits) {
290 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
292 size_in_bits -= bit_left;
293 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
294 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
296 if (pos + 1 == bs->max_size_in_dword) {
297 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
298 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
301 bs->buffer[pos + 1] = val;
306 bitstream_put_ue(bitstream *bs, unsigned int val)
308 int size_in_bits = 0;
316 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
317 bitstream_put_ui(bs, val, size_in_bits);
321 bitstream_put_se(bitstream *bs, int val)
323 unsigned int new_val;
328 new_val = 2 * val - 1;
330 bitstream_put_ue(bs, new_val);
334 bitstream_byte_aligning(bitstream *bs, int bit)
336 int bit_offset = (bs->bit_offset & 0x7);
337 int bit_left = 8 - bit_offset;
343 assert(bit == 0 || bit == 1);
346 new_val = (1 << bit_left) - 1;
350 bitstream_put_ui(bs, new_val, bit_left);
354 rbsp_trailing_bits(bitstream *bs)
356 bitstream_put_ui(bs, 1, 1);
357 bitstream_byte_aligning(bs, 0);
360 static void nal_start_code_prefix(bitstream *bs)
362 bitstream_put_ui(bs, 0x00000001, 32);
365 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
367 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
368 bitstream_put_ui(bs, nal_ref_idc, 2);
369 bitstream_put_ui(bs, nal_unit_type, 5);
372 void H264EncoderImpl::sps_rbsp(bitstream *bs)
374 int profile_idc = PROFILE_IDC_BASELINE;
376 if (h264_profile == VAProfileH264High)
377 profile_idc = PROFILE_IDC_HIGH;
378 else if (h264_profile == VAProfileH264Main)
379 profile_idc = PROFILE_IDC_MAIN;
381 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
382 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
383 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
384 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
385 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
386 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
387 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
388 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
390 if ( profile_idc == PROFILE_IDC_HIGH) {
391 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
392 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
393 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
394 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
395 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
398 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
399 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
401 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
402 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
407 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
408 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
410 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
411 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
412 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
414 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
418 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
419 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
421 if (seq_param.frame_cropping_flag) {
422 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
423 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
424 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
425 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
428 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
430 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
432 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
433 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
434 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
435 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
437 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
438 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
439 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
441 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
442 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
443 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
446 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
447 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
449 bitstream_put_ui(bs, 1, 32); // FPS
450 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
451 bitstream_put_ui(bs, 1, 1);
453 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
456 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
457 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
458 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
460 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
461 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
462 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
464 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
465 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
466 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
467 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
469 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
470 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
472 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
473 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
476 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
480 void H264EncoderImpl::pps_rbsp(bitstream *bs)
482 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
483 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
485 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
487 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
489 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
491 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
492 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
494 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
495 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
497 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
498 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
499 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
501 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
502 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
503 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
506 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
507 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
508 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
510 rbsp_trailing_bits(bs);
513 void H264EncoderImpl::slice_header(bitstream *bs)
515 int first_mb_in_slice = slice_param.macroblock_address;
517 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
518 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
519 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
520 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
522 /* frame_mbs_only_flag == 1 */
523 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
528 if (pic_param.pic_fields.bits.idr_pic_flag)
529 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
531 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
532 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
533 /* pic_order_present_flag == 0 */
539 /* redundant_pic_cnt_present_flag == 0 */
541 if (IS_P_SLICE(slice_param.slice_type)) {
542 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
544 if (slice_param.num_ref_idx_active_override_flag)
545 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
547 /* ref_pic_list_reordering */
548 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
549 } else if (IS_B_SLICE(slice_param.slice_type)) {
550 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
552 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
554 if (slice_param.num_ref_idx_active_override_flag) {
555 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
556 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
559 /* ref_pic_list_reordering */
560 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
561 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
564 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
565 IS_P_SLICE(slice_param.slice_type)) ||
566 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
567 IS_B_SLICE(slice_param.slice_type))) {
568 /* FIXME: fill weight/offset table */
572 /* dec_ref_pic_marking */
573 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
574 unsigned char no_output_of_prior_pics_flag = 0;
575 unsigned char long_term_reference_flag = 0;
576 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
578 if (pic_param.pic_fields.bits.idr_pic_flag) {
579 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
580 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
582 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
586 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
587 !IS_I_SLICE(slice_param.slice_type))
588 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
590 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
592 /* ignore for SP/SI */
594 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
595 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
597 if (slice_param.disable_deblocking_filter_idc != 1) {
598 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
599 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
603 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
604 bitstream_byte_aligning(bs, 1);
608 int H264EncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
612 bitstream_start(&bs);
613 nal_start_code_prefix(&bs);
614 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
618 *header_buffer = (unsigned char *)bs.buffer;
619 return bs.bit_offset;
623 H264EncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
627 bitstream_start(&bs);
628 nal_start_code_prefix(&bs);
629 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
633 *header_buffer = (unsigned char *)bs.buffer;
634 return bs.bit_offset;
637 int H264EncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
640 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
641 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
643 bitstream_start(&bs);
644 nal_start_code_prefix(&bs);
646 if (IS_I_SLICE(slice_param.slice_type)) {
647 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
648 } else if (IS_P_SLICE(slice_param.slice_type)) {
649 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
651 assert(IS_B_SLICE(slice_param.slice_type));
652 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
658 *header_buffer = (unsigned char *)bs.buffer;
659 return bs.bit_offset;
664 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
665 1) period between Frame #X and Frame #N = #X - #N
666 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
667 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
668 4) intra_period and intra_idr_period take precedence over ip_period
669 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
670 of I/IDR frames, see bellow examples
671 -------------------------------------------------------------------
672 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
673 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
674 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
675 1 0 ignored IDRIIIIIII... (No IDR any more)
676 1 1 ignored IDR IDR IDR IDR...
677 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
678 >=2 0 1 IDRPPP IPPP I... (3/0/1)
679 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
680 (PBB)(IBB)(PBB)(IBB)...
681 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
682 IDRPPPPP IPPPPP IPPPPP...
683 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
684 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
685 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
686 {IDR(PBB)(PBB)(IBB)(PBB)}...
687 {IDR(PBB)(PBB)} (6/6/3)
691 // General pts/dts strategy:
693 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
694 // bit tricky. We assume first of all that the frame rate never goes _above_
695 // MAX_FPS, which gives us a frame period N. The decoder can always decode
696 // in at least this speed, as long at dts <= pts (the frame is not attempted
697 // presented before it is decoded). Furthermore, we never have longer chains of
698 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
699 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
700 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
701 // frame, with an order O <= C.)
703 // Many strategies are possible, but we establish these rules:
705 // - Tip frames have dts = pts - (C-O)*N.
706 // - Non-tip frames have dts = dts_last + N.
708 // An example, with C=2 and N=10 and the data flow showed with arrows:
711 // pts: 30 40 50 60 70 80
713 // dts: 10 30 20 60 50←40
718 // To show that this works fine also with irregular spacings, let's say that
719 // the third frame is delayed a bit (something earlier was dropped). Now the
720 // situation looks like this:
723 // pts: 30 40 80 90 100 110
725 // dts: 10 30 20 90 50←40
730 // The resetting on every tip frame makes sure dts never ends up lagging a lot
731 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
733 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
734 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
735 // a tip frame and should be given a dts based on the previous one.
740 void encoding2display_order(
741 int encoding_order, int intra_period,
742 int intra_idr_period, int ip_period,
743 int *displaying_order,
744 int *frame_type, int *pts_lag)
746 int encoding_order_gop = 0;
750 if (intra_period == 1) { /* all are I/IDR frames */
751 *displaying_order = encoding_order;
752 if (intra_idr_period == 0)
753 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
755 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
759 if (intra_period == 0)
760 intra_idr_period = 0;
762 if (ip_period == 1) {
763 // No B-frames, sequence is like IDR PPPPP IPPPPP.
764 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
765 *displaying_order = encoding_order;
767 if (encoding_order_gop == 0) { /* the first frame */
768 *frame_type = FRAME_IDR;
769 } else if (intra_period != 0 && /* have I frames */
770 encoding_order_gop >= 2 &&
771 (encoding_order_gop % intra_period == 0)) {
772 *frame_type = FRAME_I;
774 *frame_type = FRAME_P;
779 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
780 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
781 *pts_lag = -1; // Most frames are not tip frames.
783 if (encoding_order_gop == 0) { /* the first frame */
784 *frame_type = FRAME_IDR;
785 *displaying_order = encoding_order;
786 // IDR frames are a special case; I honestly can't find the logic behind
787 // why this is the right thing, but it seems to line up nicely in practice :-)
788 *pts_lag = TIMEBASE / MAX_FPS;
789 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
790 *frame_type = FRAME_B;
791 *displaying_order = encoding_order - 1;
792 if ((encoding_order_gop % ip_period) == 0) {
793 *pts_lag = 0; // Last B-frame.
795 } else if (intra_period != 0 && /* have I frames */
796 encoding_order_gop >= 2 &&
797 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
798 *frame_type = FRAME_I;
799 *displaying_order = encoding_order + ip_period - 1;
801 *frame_type = FRAME_P;
802 *displaying_order = encoding_order + ip_period - 1;
807 static const char *rc_to_string(int rc_mode)
820 case VA_RC_VBR_CONSTRAINED:
821 return "VBR_CONSTRAINED";
828 static int process_cmdline(int argc, char *argv[])
831 const struct option long_opts[] = {
832 {"help", no_argument, NULL, 0 },
833 {"bitrate", required_argument, NULL, 1 },
834 {"minqp", required_argument, NULL, 2 },
835 {"initialqp", required_argument, NULL, 3 },
836 {"intra_period", required_argument, NULL, 4 },
837 {"idr_period", required_argument, NULL, 5 },
838 {"ip_period", required_argument, NULL, 6 },
839 {"rcmode", required_argument, NULL, 7 },
840 {"srcyuv", required_argument, NULL, 9 },
841 {"recyuv", required_argument, NULL, 10 },
842 {"fourcc", required_argument, NULL, 11 },
843 {"syncmode", no_argument, NULL, 12 },
844 {"enablePSNR", no_argument, NULL, 13 },
845 {"prit", required_argument, NULL, 14 },
846 {"priv", required_argument, NULL, 15 },
847 {"framecount", required_argument, NULL, 16 },
848 {"entropy", required_argument, NULL, 17 },
849 {"profile", required_argument, NULL, 18 },
850 {NULL, no_argument, NULL, 0 }};
853 while ((c =getopt_long_only(argc, argv, "w:h:n:f:o:?", long_opts, &long_index)) != EOF) {
856 frame_width = atoi(optarg);
859 frame_height = atoi(optarg);
863 frame_rate = atoi(optarg);
866 coded_fn = strdup(optarg);
872 frame_bitrate = atoi(optarg);
875 minimal_qp = atoi(optarg);
878 initial_qp = atoi(optarg);
881 intra_period = atoi(optarg);
884 intra_idr_period = atoi(optarg);
887 ip_period = atoi(optarg);
890 rc_mode = string_to_rc(optarg);
897 srcyuv_fn = strdup(optarg);
900 srcyuv_fourcc = string_to_fourcc(optarg);
901 if (srcyuv_fourcc <= 0) {
910 h264_entropy_mode = atoi(optarg) ? 1: 0;
913 if (strncmp(optarg, "BP", 2) == 0)
914 h264_profile = VAProfileH264Baseline;
915 else if (strncmp(optarg, "MP", 2) == 0)
916 h264_profile = VAProfileH264Main;
917 else if (strncmp(optarg, "HP", 2) == 0)
918 h264_profile = VAProfileH264High;
920 h264_profile = (VAProfile)0;
930 printf(" ip_period must be greater than 0\n");
933 if (intra_period != 1 && intra_period % ip_period != 0) {
934 printf(" intra_period must be a multiplier of ip_period\n");
937 if (intra_period != 0 && intra_idr_period % intra_period != 0) {
938 printf(" intra_idr_period must be a multiplier of intra_period\n");
942 if (frame_bitrate == 0)
943 frame_bitrate = frame_width * frame_height * 12 * MAX_FPS / 50;
945 if (coded_fn == NULL) {
947 if (stat("/tmp", &buf) == 0)
948 coded_fn = strdup("/tmp/test.264");
949 else if (stat("/sdcard", &buf) == 0)
950 coded_fn = strdup("/sdcard/test.264");
952 coded_fn = strdup("./test.264");
956 frame_width_mbaligned = (frame_width + 15) & (~15);
957 frame_height_mbaligned = (frame_height + 15) & (~15);
958 if (frame_width != frame_width_mbaligned ||
959 frame_height != frame_height_mbaligned) {
960 printf("Source frame is %dx%d and will code clip to %dx%d with crop\n",
961 frame_width, frame_height,
962 frame_width_mbaligned, frame_height_mbaligned
970 VADisplay H264EncoderImpl::va_open_display(void)
972 x11_display = XOpenDisplay(NULL);
974 fprintf(stderr, "error: can't connect to X server!\n");
977 return vaGetDisplay(x11_display);
980 void H264EncoderImpl::va_close_display(VADisplay va_dpy)
986 XUnmapWindow(x11_display, x11_window);
987 XDestroyWindow(x11_display, x11_window);
990 XCloseDisplay(x11_display);
994 int H264EncoderImpl::init_va()
996 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
997 VAEntrypoint *entrypoints;
998 int num_entrypoints, slice_entrypoint;
999 int support_encode = 0;
1000 int major_ver, minor_ver;
1004 va_dpy = va_open_display();
1005 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
1006 CHECK_VASTATUS(va_status, "vaInitialize");
1008 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
1009 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
1011 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
1015 /* use the highest profile */
1016 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
1017 if ((h264_profile != ~0) && h264_profile != profile_list[i])
1020 h264_profile = profile_list[i];
1021 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
1022 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
1023 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
1028 if (support_encode == 1)
1032 if (support_encode == 0) {
1033 printf("Can't find VAEntrypointEncSlice for H264 profiles\n");
1036 switch (h264_profile) {
1037 case VAProfileH264Baseline:
1039 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
1040 h264_entropy_mode = 0;
1042 case VAProfileH264ConstrainedBaseline:
1043 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
1047 case VAProfileH264Main:
1048 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
1051 case VAProfileH264High:
1052 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
1055 h264_profile = VAProfileH264Baseline;
1057 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
1062 VAConfigAttrib attrib[VAConfigAttribTypeMax];
1064 /* find out the format for the render target, and rate control mode */
1065 for (i = 0; i < VAConfigAttribTypeMax; i++)
1066 attrib[i].type = (VAConfigAttribType)i;
1068 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
1069 &attrib[0], VAConfigAttribTypeMax);
1070 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
1071 /* check the interested configattrib */
1072 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
1073 printf("Not find desired YUV420 RT format\n");
1076 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
1077 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
1078 config_attrib_num++;
1081 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
1082 int tmp = attrib[VAConfigAttribRateControl].value;
1084 if (rc_mode == -1 || !(rc_mode & tmp)) {
1085 if (rc_mode != -1) {
1086 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
1089 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
1090 if (rc_default_modes[i] & tmp) {
1091 rc_mode = rc_default_modes[i];
1097 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
1098 config_attrib[config_attrib_num].value = rc_mode;
1099 config_attrib_num++;
1103 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
1104 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
1106 h264_packedheader = 1;
1107 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
1108 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1110 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
1111 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
1114 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
1115 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
1118 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
1119 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
1122 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
1123 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
1126 enc_packed_header_idx = config_attrib_num;
1127 config_attrib_num++;
1130 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
1131 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
1132 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1133 config_attrib_num++;
1136 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
1137 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
1144 int H264EncoderImpl::setup_encode()
1147 VASurfaceID *tmp_surfaceid;
1148 int codedbuf_size, i;
1149 static VASurfaceID src_surface[SURFACE_NUM];
1150 static VASurfaceID ref_surface[SURFACE_NUM];
1152 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
1153 &config_attrib[0], config_attrib_num, &config_id);
1154 CHECK_VASTATUS(va_status, "vaCreateConfig");
1156 /* create source surfaces */
1157 va_status = vaCreateSurfaces(va_dpy,
1158 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1159 &src_surface[0], SURFACE_NUM,
1161 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1163 /* create reference surfaces */
1164 va_status = vaCreateSurfaces(va_dpy,
1165 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1166 &ref_surface[0], SURFACE_NUM,
1168 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1170 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
1171 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
1172 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
1174 /* Create a context for this encode pipe */
1175 va_status = vaCreateContext(va_dpy, config_id,
1176 frame_width_mbaligned, frame_height_mbaligned,
1178 tmp_surfaceid, 2 * SURFACE_NUM,
1180 CHECK_VASTATUS(va_status, "vaCreateContext");
1181 free(tmp_surfaceid);
1183 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
1185 for (i = 0; i < SURFACE_NUM; i++) {
1186 /* create coded buffer once for all
1187 * other VA buffers which won't be used again after vaRenderPicture.
1188 * so APP can always vaCreateBuffer for every frame
1189 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
1190 * so VA won't maintain the coded buffer
1192 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
1193 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
1194 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1197 /* create OpenGL objects */
1198 //glGenFramebuffers(SURFACE_NUM, fbos);
1200 for (i = 0; i < SURFACE_NUM; i++) {
1201 glGenTextures(1, &gl_surfaces[i].y_tex);
1202 glGenTextures(1, &gl_surfaces[i].cbcr_tex);
1205 for (i = 0; i < SURFACE_NUM; i++) {
1206 gl_surfaces[i].src_surface = src_surface[i];
1207 gl_surfaces[i].ref_surface = ref_surface[i];
1215 #define partition(ref, field, key, ascending) \
1218 while (ref[i].field < key) \
1220 while (ref[j].field > key) \
1223 while (ref[i].field > key) \
1225 while (ref[j].field < key) \
1237 static void sort_one(VAPictureH264 ref[], int left, int right,
1238 int ascending, int frame_idx)
1240 int i = left, j = right;
1245 key = ref[(left + right) / 2].frame_idx;
1246 partition(ref, frame_idx, key, ascending);
1248 key = ref[(left + right) / 2].TopFieldOrderCnt;
1249 partition(ref, TopFieldOrderCnt, (signed int)key, ascending);
1254 sort_one(ref, left, j, ascending, frame_idx);
1257 sort_one(ref, i, right, ascending, frame_idx);
1260 static void sort_two(VAPictureH264 ref[], int left, int right, unsigned int key, unsigned int frame_idx,
1261 int partition_ascending, int list0_ascending, int list1_ascending)
1263 int i = left, j = right;
1267 partition(ref, frame_idx, key, partition_ascending);
1269 partition(ref, TopFieldOrderCnt, (signed int)key, partition_ascending);
1273 sort_one(ref, left, i-1, list0_ascending, frame_idx);
1274 sort_one(ref, j+1, right, list1_ascending, frame_idx);
1277 void H264EncoderImpl::update_ReferenceFrames(int frame_type)
1281 if (frame_type == FRAME_B)
1284 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1286 if (numShortTerm > num_ref_frames)
1287 numShortTerm = num_ref_frames;
1288 for (i=numShortTerm-1; i>0; i--)
1289 ReferenceFrames[i] = ReferenceFrames[i-1];
1290 ReferenceFrames[0] = CurrentCurrPic;
1292 current_frame_num++;
1293 if (current_frame_num > MaxFrameNum)
1294 current_frame_num = 0;
1298 int H264EncoderImpl::update_RefPicList(int frame_type)
1300 unsigned int current_poc = CurrentCurrPic.TopFieldOrderCnt;
1302 if (frame_type == FRAME_P) {
1303 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1304 sort_one(RefPicList0_P, 0, numShortTerm-1, 0, 1);
1307 if (frame_type == FRAME_B) {
1308 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1309 sort_two(RefPicList0_B, 0, numShortTerm-1, current_poc, 0,
1312 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1313 sort_two(RefPicList1_B, 0, numShortTerm-1, current_poc, 0,
1321 int H264EncoderImpl::render_sequence()
1323 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1325 VAEncMiscParameterBuffer *misc_param;
1326 VAEncMiscParameterRateControl *misc_rate_ctrl;
1328 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1329 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1330 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1331 seq_param.bits_per_second = frame_bitrate;
1333 seq_param.intra_period = intra_period;
1334 seq_param.intra_idr_period = intra_idr_period;
1335 seq_param.ip_period = ip_period;
1337 seq_param.max_num_ref_frames = num_ref_frames;
1338 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1339 seq_param.time_scale = TIMEBASE * 2;
1340 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1341 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1342 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1343 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1344 seq_param.seq_fields.bits.chroma_format_idc = 1;
1345 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1347 if (frame_width != frame_width_mbaligned ||
1348 frame_height != frame_height_mbaligned) {
1349 seq_param.frame_cropping_flag = 1;
1350 seq_param.frame_crop_left_offset = 0;
1351 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1352 seq_param.frame_crop_top_offset = 0;
1353 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1356 va_status = vaCreateBuffer(va_dpy, context_id,
1357 VAEncSequenceParameterBufferType,
1358 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1359 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1361 va_status = vaCreateBuffer(va_dpy, context_id,
1362 VAEncMiscParameterBufferType,
1363 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1364 1, NULL, &rc_param_buf);
1365 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1367 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1368 misc_param->type = VAEncMiscParameterTypeRateControl;
1369 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1370 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1371 misc_rate_ctrl->bits_per_second = frame_bitrate;
1372 misc_rate_ctrl->target_percentage = 66;
1373 misc_rate_ctrl->window_size = 1000;
1374 misc_rate_ctrl->initial_qp = initial_qp;
1375 misc_rate_ctrl->min_qp = minimal_qp;
1376 misc_rate_ctrl->basic_unit_size = 0;
1377 vaUnmapBuffer(va_dpy, rc_param_buf);
1379 render_id[0] = seq_param_buf;
1380 render_id[1] = rc_param_buf;
1382 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1387 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1389 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1390 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1391 int PicOrderCntMsb, TopFieldOrderCnt;
1393 if (frame_type == FRAME_IDR)
1394 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1396 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1397 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1400 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1401 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1402 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1403 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1404 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1405 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1407 PicOrderCntMsb = prevPicOrderCntMsb;
1409 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1411 if (frame_type != FRAME_B) {
1412 PicOrderCntMsb_ref = PicOrderCntMsb;
1413 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1416 return TopFieldOrderCnt;
1419 int H264EncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1421 VABufferID pic_param_buf;
1425 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1426 pic_param.CurrPic.frame_idx = current_frame_num;
1427 pic_param.CurrPic.flags = 0;
1428 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1429 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1430 CurrentCurrPic = pic_param.CurrPic;
1432 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1433 for (i = numShortTerm; i < SURFACE_NUM; i++) {
1434 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1435 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1438 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1439 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1440 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1441 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1442 pic_param.frame_num = current_frame_num;
1443 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1444 pic_param.last_picture = false; // FIXME
1445 pic_param.pic_init_qp = initial_qp;
1447 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1448 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1449 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1451 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1456 int H264EncoderImpl::render_packedsequence()
1458 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1459 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1460 unsigned int length_in_bits;
1461 unsigned char *packedseq_buffer = NULL;
1464 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1466 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1468 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1469 packedheader_param_buffer.has_emulation_bytes = 0;
1470 va_status = vaCreateBuffer(va_dpy,
1472 VAEncPackedHeaderParameterBufferType,
1473 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1474 &packedseq_para_bufid);
1475 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1477 va_status = vaCreateBuffer(va_dpy,
1479 VAEncPackedHeaderDataBufferType,
1480 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1481 &packedseq_data_bufid);
1482 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1484 render_id[0] = packedseq_para_bufid;
1485 render_id[1] = packedseq_data_bufid;
1486 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1488 free(packedseq_buffer);
1494 int H264EncoderImpl::render_packedpicture()
1496 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1497 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1498 unsigned int length_in_bits;
1499 unsigned char *packedpic_buffer = NULL;
1502 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1503 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1504 packedheader_param_buffer.bit_length = length_in_bits;
1505 packedheader_param_buffer.has_emulation_bytes = 0;
1507 va_status = vaCreateBuffer(va_dpy,
1509 VAEncPackedHeaderParameterBufferType,
1510 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1511 &packedpic_para_bufid);
1512 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1514 va_status = vaCreateBuffer(va_dpy,
1516 VAEncPackedHeaderDataBufferType,
1517 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1518 &packedpic_data_bufid);
1519 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1521 render_id[0] = packedpic_para_bufid;
1522 render_id[1] = packedpic_data_bufid;
1523 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1525 free(packedpic_buffer);
1530 void H264EncoderImpl::render_packedslice()
1532 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1533 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1534 unsigned int length_in_bits;
1535 unsigned char *packedslice_buffer = NULL;
1538 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1539 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1540 packedheader_param_buffer.bit_length = length_in_bits;
1541 packedheader_param_buffer.has_emulation_bytes = 0;
1543 va_status = vaCreateBuffer(va_dpy,
1545 VAEncPackedHeaderParameterBufferType,
1546 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1547 &packedslice_para_bufid);
1548 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1550 va_status = vaCreateBuffer(va_dpy,
1552 VAEncPackedHeaderDataBufferType,
1553 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1554 &packedslice_data_bufid);
1555 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1557 render_id[0] = packedslice_para_bufid;
1558 render_id[1] = packedslice_data_bufid;
1559 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1561 free(packedslice_buffer);
1564 int H264EncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1566 VABufferID slice_param_buf;
1570 update_RefPicList(frame_type);
1572 /* one frame, one slice */
1573 slice_param.macroblock_address = 0;
1574 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1575 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1576 if (frame_type == FRAME_IDR) {
1577 if (encoding_frame_num != 0)
1578 ++slice_param.idr_pic_id;
1579 } else if (frame_type == FRAME_P) {
1580 int refpiclist0_max = h264_maxref & 0xffff;
1581 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1583 for (i = refpiclist0_max; i < 32; i++) {
1584 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1585 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1587 } else if (frame_type == FRAME_B) {
1588 int refpiclist0_max = h264_maxref & 0xffff;
1589 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1591 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1592 for (i = refpiclist0_max; i < 32; i++) {
1593 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1594 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1597 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1598 for (i = refpiclist1_max; i < 32; i++) {
1599 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1600 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1604 slice_param.slice_alpha_c0_offset_div2 = 0;
1605 slice_param.slice_beta_offset_div2 = 0;
1606 slice_param.direct_spatial_mv_pred_flag = 1;
1607 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1610 if (h264_packedheader &&
1611 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1612 render_packedslice();
1614 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1615 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1616 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1618 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1625 void H264EncoderImpl::save_codeddata(storage_task task)
1627 VACodedBufferSegment *buf_list = NULL;
1632 const int64_t global_delay = (ip_period - 1) * (TIMEBASE / MAX_FPS); // So we never get negative dts.
1634 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1635 CHECK_VASTATUS(va_status, "vaMapBuffer");
1636 while (buf_list != NULL) {
1637 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1638 buf_list = (VACodedBufferSegment *) buf_list->next;
1640 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1645 memset(&pkt, 0, sizeof(pkt));
1647 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1648 pkt.size = data.size();
1649 pkt.stream_index = 0;
1650 if (task.frame_type == FRAME_IDR || task.frame_type == FRAME_I) {
1651 pkt.flags = AV_PKT_FLAG_KEY;
1656 httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay);
1658 // Encode and add all audio frames up to and including the pts of this video frame.
1661 vector<float> audio;
1663 unique_lock<mutex> lock(frame_queue_mutex);
1664 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1665 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1666 auto it = pending_audio_frames.begin();
1667 if (it->first > task.pts) break;
1668 audio_pts = it->first;
1669 audio = move(it->second);
1670 pending_audio_frames.erase(it);
1673 AVFrame *frame = avcodec_alloc_frame();
1674 frame->nb_samples = audio.size() / 2;
1675 frame->format = AV_SAMPLE_FMT_S32;
1676 frame->channel_layout = AV_CH_LAYOUT_STEREO;
1678 unique_ptr<int32_t[]> int_samples(new int32_t[audio.size()]);
1679 int ret = avcodec_fill_audio_frame(frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
1681 fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
1684 for (int i = 0; i < frame->nb_samples * 2; ++i) {
1685 if (audio[i] >= 1.0f) {
1686 int_samples[i] = 2147483647;
1687 } else if (audio[i] <= -1.0f) {
1688 int_samples[i] = -2147483647;
1690 int_samples[i] = lrintf(audio[i] * 2147483647.0f);
1695 av_init_packet(&pkt);
1699 avcodec_encode_audio2(context_audio, &pkt, frame, &got_output);
1701 pkt.stream_index = 1;
1702 httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay);
1704 // TODO: Delayed frames.
1705 avcodec_free_frame(&frame);
1706 av_free_packet(&pkt);
1707 if (audio_pts == task.pts) break;
1711 printf("\r "); /* return back to startpoint */
1712 switch (encode_order % 4) {
1726 printf("%08lld", encode_order);
1731 // this is weird. but it seems to put a new frame onto the queue
1732 void H264EncoderImpl::storage_task_enqueue(storage_task task)
1734 unique_lock<mutex> lock(storage_task_queue_mutex);
1735 storage_task_queue.push(move(task));
1736 srcsurface_status[task.display_order % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
1737 storage_task_queue_changed.notify_all();
1740 void H264EncoderImpl::storage_task_thread()
1743 storage_task current;
1745 // wait until there's an encoded frame
1746 unique_lock<mutex> lock(storage_task_queue_mutex);
1747 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1748 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1749 current = move(storage_task_queue.front());
1750 storage_task_queue.pop();
1755 // waits for data, then saves it to disk.
1756 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1757 CHECK_VASTATUS(va_status, "vaSyncSurface");
1758 save_codeddata(move(current));
1761 unique_lock<mutex> lock(storage_task_queue_mutex);
1762 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1763 storage_task_queue_changed.notify_all();
1768 int H264EncoderImpl::release_encode()
1772 for (i = 0; i < SURFACE_NUM; i++) {
1773 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1774 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1775 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1778 vaDestroyContext(va_dpy, context_id);
1779 vaDestroyConfig(va_dpy, config_id);
1784 int H264EncoderImpl::deinit_va()
1786 vaTerminate(va_dpy);
1788 va_close_display(va_dpy);
1794 H264EncoderImpl::H264EncoderImpl(QSurface *surface, int width, int height, HTTPD *httpd)
1795 : current_storage_frame(0), surface(surface), httpd(httpd)
1797 AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC);
1798 context_audio = avcodec_alloc_context3(codec_audio);
1799 context_audio->bit_rate = AUDIO_OUTPUT_BIT_RATE;
1800 context_audio->sample_rate = OUTPUT_FREQUENCY;
1801 context_audio->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT;
1802 context_audio->channels = 2;
1803 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1804 context_audio->time_base = AVRational{1, TIMEBASE};
1805 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1806 fprintf(stderr, "Could not open codec\n");
1810 frame_width = width;
1811 frame_height = height;
1812 frame_width_mbaligned = (frame_width + 15) & (~15);
1813 frame_height_mbaligned = (frame_height + 15) & (~15);
1820 // No frames are ready yet.
1821 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1823 memset(&seq_param, 0, sizeof(seq_param));
1824 memset(&pic_param, 0, sizeof(pic_param));
1825 memset(&slice_param, 0, sizeof(slice_param));
1827 storage_thread = thread(&H264EncoderImpl::storage_task_thread, this);
1829 encode_thread = thread([this]{
1830 //SDL_GL_MakeCurrent(window, context);
1831 QOpenGLContext *context = create_context(this->surface);
1832 eglBindAPI(EGL_OPENGL_API);
1833 if (!make_current(context, this->surface)) {
1834 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1838 encode_thread_func();
1842 H264EncoderImpl::~H264EncoderImpl()
1845 unique_lock<mutex> lock(frame_queue_mutex);
1846 encode_thread_should_quit = true;
1847 frame_queue_nonempty.notify_all();
1849 encode_thread.join();
1851 unique_lock<mutex> lock(storage_task_queue_mutex);
1852 storage_thread_should_quit = true;
1853 frame_queue_nonempty.notify_all();
1854 storage_task_queue_changed.notify_all();
1856 storage_thread.join();
1862 bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1865 // Wait until this frame slot is done encoding.
1866 unique_lock<mutex> lock(storage_task_queue_mutex);
1867 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1868 if (storage_thread_should_quit) return false;
1871 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
1872 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1873 *y_tex = surf->y_tex;
1874 *cbcr_tex = surf->cbcr_tex;
1876 VASurfaceID surface = surf->src_surface;
1877 VAStatus va_status = vaDeriveImage(va_dpy, surface, &surf->surface_image);
1878 CHECK_VASTATUS(va_status, "vaDeriveImage");
1880 VABufferInfo buf_info;
1881 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1882 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1883 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1886 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1887 EGLint y_attribs[] = {
1888 EGL_WIDTH, frame_width,
1889 EGL_HEIGHT, frame_height,
1890 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1891 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1892 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1893 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1897 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1898 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1900 // Associate Y image to a texture.
1901 glBindTexture(GL_TEXTURE_2D, *y_tex);
1902 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1904 // Create CbCr image.
1905 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1906 EGLint cbcr_attribs[] = {
1907 EGL_WIDTH, frame_width,
1908 EGL_HEIGHT, frame_height,
1909 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1910 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1911 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1912 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1916 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1917 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1919 // Associate CbCr image to a texture.
1920 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1921 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1926 void H264EncoderImpl::add_audio(int64_t pts, vector<float> audio)
1929 unique_lock<mutex> lock(frame_queue_mutex);
1930 pending_audio_frames[pts] = move(audio);
1932 frame_queue_nonempty.notify_all();
1935 void H264EncoderImpl::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
1938 unique_lock<mutex> lock(frame_queue_mutex);
1939 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
1940 ++current_storage_frame;
1942 frame_queue_nonempty.notify_all();
1945 void H264EncoderImpl::encode_thread_func()
1947 int64_t last_dts = -1;
1948 int gop_start_display_frame_num = 0;
1949 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
1952 int frame_type, display_frame_num;
1953 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
1954 &display_frame_num, &frame_type, &pts_lag);
1955 if (frame_type == FRAME_IDR) {
1957 current_frame_num = 0;
1958 gop_start_display_frame_num = display_frame_num;
1962 unique_lock<mutex> lock(frame_queue_mutex);
1963 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
1964 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
1966 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
1967 // We have queued frames that were supposed to be B-frames,
1968 // but will be no P-frame to encode them against. Encode them all
1969 // as P-frames instead. Note that this happens under the mutex,
1970 // but nobody else uses it at this point, since we're shutting down,
1971 // so there's no contention.
1972 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
1975 frame = move(pending_video_frames[display_frame_num]);
1976 pending_video_frames.erase(display_frame_num);
1980 // Determine the dts of this frame.
1982 if (pts_lag == -1) {
1983 assert(last_dts != -1);
1984 dts = last_dts + (TIMEBASE / MAX_FPS);
1986 dts = frame.pts - pts_lag;
1990 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts);
1994 void H264EncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
1996 if (pending_video_frames.empty()) {
2000 for (auto &pending_frame : pending_video_frames) {
2001 int display_frame_num = pending_frame.first;
2002 assert(display_frame_num > 0);
2003 PendingFrame frame = move(pending_frame.second);
2004 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
2005 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
2006 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
2011 void H264EncoderImpl::encode_frame(H264EncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
2012 int frame_type, int64_t pts, int64_t dts)
2014 // Wait for the GPU to be done with the frame.
2015 glClientWaitSync(frame.fence.get(), 0, 0);
2017 // Release back any input frames we needed to render this frame.
2018 frame.input_frames.clear();
2021 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
2022 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
2023 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
2024 VAStatus va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
2025 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
2026 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
2027 CHECK_VASTATUS(va_status, "vaDestroyImage");
2029 VASurfaceID surface = surf->src_surface;
2031 // Schedule the frame for encoding.
2032 va_status = vaBeginPicture(va_dpy, context_id, surface);
2033 CHECK_VASTATUS(va_status, "vaBeginPicture");
2035 if (frame_type == FRAME_IDR) {
2037 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2038 if (h264_packedheader) {
2039 render_packedsequence();
2040 render_packedpicture();
2043 //render_sequence();
2044 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2046 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2048 va_status = vaEndPicture(va_dpy, context_id);
2049 CHECK_VASTATUS(va_status, "vaEndPicture");
2051 // so now the data is done encoding (well, async job kicked off)...
2052 // we send that to the storage thread
2054 tmp.display_order = display_frame_num;
2055 tmp.frame_type = frame_type;
2058 storage_task_enqueue(move(tmp));
2060 update_ReferenceFrames(frame_type);
2064 H264Encoder::H264Encoder(QSurface *surface, int width, int height, HTTPD *httpd)
2065 : impl(new H264EncoderImpl(surface, width, height, httpd)) {}
2067 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2068 H264Encoder::~H264Encoder() {}
2070 void H264Encoder::add_audio(int64_t pts, std::vector<float> audio)
2072 impl->add_audio(pts, audio);
2075 bool H264Encoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
2077 return impl->begin_frame(y_tex, cbcr_tex);
2080 void H264Encoder::end_frame(RefCountedGLsync fence, int64_t pts, const std::vector<RefCountedFrame> &input_frames)
2082 impl->end_frame(fence, pts, input_frames);