2 #include "h264encode.h"
4 #include <movit/util.h>
5 #include <EGL/eglplatform.h>
11 #include <libavcodec/avcodec.h>
12 #include <libavformat/avformat.h>
13 #include <libavutil/channel_layout.h>
14 #include <libavutil/frame.h>
15 #include <libavutil/rational.h>
16 #include <libavutil/samplefmt.h>
18 #include <libdrm/drm_fourcc.h>
24 #include <va/va_drm.h>
25 #include <va/va_drmcommon.h>
26 #include <va/va_enc_h264.h>
27 #include <va/va_x11.h>
29 #include <condition_variable>
50 #define CHECK_VASTATUS(va_status, func) \
51 if (va_status != VA_STATUS_SUCCESS) { \
52 fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
56 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
58 //#include "loadsurface.h"
60 #define NAL_REF_IDC_NONE 0
61 #define NAL_REF_IDC_LOW 1
62 #define NAL_REF_IDC_MEDIUM 2
63 #define NAL_REF_IDC_HIGH 3
71 #define SLICE_TYPE_P 0
72 #define SLICE_TYPE_B 1
73 #define SLICE_TYPE_I 2
74 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
75 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
76 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
79 #define ENTROPY_MODE_CAVLC 0
80 #define ENTROPY_MODE_CABAC 1
82 #define PROFILE_IDC_BASELINE 66
83 #define PROFILE_IDC_MAIN 77
84 #define PROFILE_IDC_HIGH 100
86 #define BITSTREAM_ALLOCATE_STEPPING 4096
87 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
88 #define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
89 #define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
91 static constexpr unsigned int MaxFrameNum = (2<<16);
92 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
93 static constexpr unsigned int Log2MaxFrameNum = 16;
94 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
95 static constexpr int rc_default_modes[] = { // Priority list of modes.
98 VA_RC_VBR_CONSTRAINED,
104 /* thread to save coded data */
105 #define SRC_SURFACE_FREE 0
106 #define SRC_SURFACE_IN_ENCODING 1
109 unsigned int *buffer;
111 int max_size_in_dword;
113 typedef struct __bitstream bitstream;
117 // H.264 video comes out in encoding order (e.g. with two B-frames:
118 // 0, 3, 1, 2, 6, 4, 5, etc.), but uncompressed video needs to
119 // come in the right order. Since we do everything, including waiting
120 // for the frames to come out of OpenGL, in encoding order, we need
121 // a reordering buffer for uncompressed frames so that they come out
122 // correctly. We go the super-lazy way of not making it understand
123 // anything about the true order (which introduces some extra latency,
124 // though); we know that for N B-frames we need at most (N-1) frames
125 // in the reorder buffer, and can just sort on that.
127 // The class also deals with keeping a freelist as needed.
128 class FrameReorderer {
130 FrameReorderer(unsigned queue_length, int width, int height);
132 // Returns the next frame to insert with its pts, if any. Otherwise -1 and nullptr.
133 // Does _not_ take ownership of data; a copy is taken if needed.
134 // The returned pointer is valid until the next call to reorder_frame, or destruction.
135 // As a special case, if queue_length == 0, will just return pts and data (no reordering needed).
136 pair<int64_t, const uint8_t *> reorder_frame(int64_t pts, const uint8_t *data);
138 // The same as reorder_frame, but without inserting anything. Used to empty the queue.
139 pair<int64_t, const uint8_t *> get_first_frame();
141 bool empty() const { return frames.empty(); }
144 unsigned queue_length;
147 priority_queue<pair<int64_t, uint8_t *>> frames;
148 stack<uint8_t *> freelist; // Includes the last value returned from reorder_frame.
150 // Owns all the pointers. Normally, freelist and frames could do this themselves,
151 // except priority_queue doesn't work well with movable-only types.
152 vector<unique_ptr<uint8_t[]>> owner;
155 FrameReorderer::FrameReorderer(unsigned queue_length, int width, int height)
156 : queue_length(queue_length), width(width), height(height)
158 for (unsigned i = 0; i < queue_length; ++i) {
159 owner.emplace_back(new uint8_t[width * height * 2]);
160 freelist.push(owner.back().get());
164 pair<int64_t, const uint8_t *> FrameReorderer::reorder_frame(int64_t pts, const uint8_t *data)
166 if (queue_length == 0) {
167 return make_pair(pts, data);
170 assert(!freelist.empty());
171 uint8_t *storage = freelist.top();
173 memcpy(storage, data, width * height * 2);
174 frames.emplace(-pts, storage); // Invert pts to get smallest first.
176 if (frames.size() >= queue_length) {
177 return get_first_frame();
179 return make_pair(-1, nullptr);
183 pair<int64_t, const uint8_t *> FrameReorderer::get_first_frame()
185 assert(!frames.empty());
186 pair<int64_t, uint8_t *> storage = frames.top();
188 int64_t pts = storage.first;
189 freelist.push(storage.second);
190 return make_pair(-pts, storage.second); // Re-invert pts (see reorder_frame()).
193 class H264EncoderImpl {
195 H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd);
197 void add_audio(int64_t pts, vector<float> audio);
198 bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
199 RefCountedGLsync end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames);
203 struct storage_task {
204 unsigned long long display_order;
209 struct PendingFrame {
210 RefCountedGLsync fence;
211 vector<RefCountedFrame> input_frames;
215 void encode_thread_func();
216 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
217 void add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data);
218 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
219 int frame_type, int64_t pts, int64_t dts);
220 void storage_task_thread();
221 void storage_task_enqueue(storage_task task);
222 void save_codeddata(storage_task task);
223 int render_packedsequence();
224 int render_packedpicture();
225 void render_packedslice();
226 int render_sequence();
227 int render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num);
228 void sps_rbsp(bitstream *bs);
229 void pps_rbsp(bitstream *bs);
230 int build_packed_pic_buffer(unsigned char **header_buffer);
231 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
232 void slice_header(bitstream *bs);
233 int build_packed_seq_buffer(unsigned char **header_buffer);
234 int build_packed_slice_buffer(unsigned char **header_buffer);
235 int init_va(const string &va_display);
237 void enable_zerocopy_if_possible();
238 VADisplay va_open_display(const string &va_display);
239 void va_close_display(VADisplay va_dpy);
241 int release_encode();
242 void update_ReferenceFrames(int frame_type);
243 int update_RefPicList(int frame_type);
245 bool is_shutdown = false;
249 thread encode_thread, storage_thread;
251 mutex storage_task_queue_mutex;
252 condition_variable storage_task_queue_changed;
253 int srcsurface_status[SURFACE_NUM]; // protected by storage_task_queue_mutex
254 queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
255 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
257 mutex frame_queue_mutex;
258 condition_variable frame_queue_nonempty;
259 bool encode_thread_should_quit = false; // under frame_queue_mutex
261 int current_storage_frame;
263 map<int, PendingFrame> pending_video_frames; // under frame_queue_mutex
264 map<int64_t, vector<float>> pending_audio_frames; // under frame_queue_mutex
267 AVCodecContext *context_audio;
268 AVFrame *audio_frame = nullptr;
270 unique_ptr<FrameReorderer> reorderer;
272 Display *x11_display = nullptr;
274 // Encoder parameters
276 VAProfile h264_profile = (VAProfile)~0;
277 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
278 int config_attrib_num = 0, enc_packed_header_idx;
281 VASurfaceID src_surface, ref_surface;
282 VABufferID coded_buf;
284 VAImage surface_image;
285 GLuint y_tex, cbcr_tex;
287 // Only if use_zerocopy == true.
288 EGLImage y_egl_image, cbcr_egl_image;
290 // Only if use_zerocopy == false.
292 uint8_t *y_ptr, *cbcr_ptr;
293 size_t y_offset, cbcr_offset;
295 GLSurface gl_surfaces[SURFACE_NUM];
297 VAConfigID config_id;
298 VAContextID context_id;
299 VAEncSequenceParameterBufferH264 seq_param;
300 VAEncPictureParameterBufferH264 pic_param;
301 VAEncSliceParameterBufferH264 slice_param;
302 VAPictureH264 CurrentCurrPic;
303 VAPictureH264 ReferenceFrames[MAX_NUM_REF1], RefPicList0_P[MAX_NUM_REF2], RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
305 // Static quality settings.
306 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
307 static constexpr unsigned int num_ref_frames = 2;
308 static constexpr int initial_qp = 15;
309 static constexpr int minimal_qp = 0;
310 static constexpr int intra_period = 30;
311 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
313 // Quality settings that are meant to be static, but might be overridden
315 int constraint_set_flag = 0;
316 int h264_packedheader = 0; /* support pack header? */
317 int h264_maxref = (1<<16|1);
318 int h264_entropy_mode = 1; /* cabac */
322 unsigned int current_frame_num = 0;
323 unsigned int numShortTerm = 0;
327 int frame_width_mbaligned;
328 int frame_height_mbaligned;
331 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
332 // but if we don't delete it here, we get leaks. The GStreamer implementation
334 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
336 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
337 CHECK_VASTATUS(va_status, "vaRenderPicture");
339 for (int i = 0; i < num_buffers; ++i) {
340 va_status = vaDestroyBuffer(dpy, buffers[i]);
341 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
346 va_swap32(unsigned int val)
348 unsigned char *pval = (unsigned char *)&val;
350 return ((pval[0] << 24) |
357 bitstream_start(bitstream *bs)
359 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
360 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
365 bitstream_end(bitstream *bs)
367 int pos = (bs->bit_offset >> 5);
368 int bit_offset = (bs->bit_offset & 0x1f);
369 int bit_left = 32 - bit_offset;
372 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
377 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
379 int pos = (bs->bit_offset >> 5);
380 int bit_offset = (bs->bit_offset & 0x1f);
381 int bit_left = 32 - bit_offset;
386 bs->bit_offset += size_in_bits;
388 if (bit_left > size_in_bits) {
389 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
391 size_in_bits -= bit_left;
392 if (bit_left >= 32) {
393 bs->buffer[pos] = (val >> size_in_bits);
395 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
397 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
399 if (pos + 1 == bs->max_size_in_dword) {
400 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
401 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
404 bs->buffer[pos + 1] = val;
409 bitstream_put_ue(bitstream *bs, unsigned int val)
411 int size_in_bits = 0;
419 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
420 bitstream_put_ui(bs, val, size_in_bits);
424 bitstream_put_se(bitstream *bs, int val)
426 unsigned int new_val;
431 new_val = 2 * val - 1;
433 bitstream_put_ue(bs, new_val);
437 bitstream_byte_aligning(bitstream *bs, int bit)
439 int bit_offset = (bs->bit_offset & 0x7);
440 int bit_left = 8 - bit_offset;
446 assert(bit == 0 || bit == 1);
449 new_val = (1 << bit_left) - 1;
453 bitstream_put_ui(bs, new_val, bit_left);
457 rbsp_trailing_bits(bitstream *bs)
459 bitstream_put_ui(bs, 1, 1);
460 bitstream_byte_aligning(bs, 0);
463 static void nal_start_code_prefix(bitstream *bs)
465 bitstream_put_ui(bs, 0x00000001, 32);
468 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
470 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
471 bitstream_put_ui(bs, nal_ref_idc, 2);
472 bitstream_put_ui(bs, nal_unit_type, 5);
475 void H264EncoderImpl::sps_rbsp(bitstream *bs)
477 int profile_idc = PROFILE_IDC_BASELINE;
479 if (h264_profile == VAProfileH264High)
480 profile_idc = PROFILE_IDC_HIGH;
481 else if (h264_profile == VAProfileH264Main)
482 profile_idc = PROFILE_IDC_MAIN;
484 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
485 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
486 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
487 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
488 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
489 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
490 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
491 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
493 if ( profile_idc == PROFILE_IDC_HIGH) {
494 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
495 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
496 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
497 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
498 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
501 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
502 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
504 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
505 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
510 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
511 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
513 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
514 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
515 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
517 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
521 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
522 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
524 if (seq_param.frame_cropping_flag) {
525 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
526 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
527 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
528 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
531 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
533 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
535 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
536 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
537 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
538 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
540 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
541 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
542 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
544 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
545 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
546 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
549 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
550 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
552 bitstream_put_ui(bs, 1, 32); // FPS
553 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
554 bitstream_put_ui(bs, 1, 1);
556 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
559 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
560 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
561 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
563 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
564 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
565 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
567 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
568 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
569 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
570 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
572 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
573 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
575 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
576 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
579 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
583 void H264EncoderImpl::pps_rbsp(bitstream *bs)
585 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
586 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
588 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
590 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
592 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
594 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
595 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
597 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
598 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
600 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
601 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
602 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
604 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
605 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
606 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
609 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
610 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
611 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
613 rbsp_trailing_bits(bs);
616 void H264EncoderImpl::slice_header(bitstream *bs)
618 int first_mb_in_slice = slice_param.macroblock_address;
620 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
621 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
622 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
623 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
625 /* frame_mbs_only_flag == 1 */
626 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
631 if (pic_param.pic_fields.bits.idr_pic_flag)
632 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
634 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
635 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
636 /* pic_order_present_flag == 0 */
642 /* redundant_pic_cnt_present_flag == 0 */
644 if (IS_P_SLICE(slice_param.slice_type)) {
645 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
647 if (slice_param.num_ref_idx_active_override_flag)
648 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
650 /* ref_pic_list_reordering */
651 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
652 } else if (IS_B_SLICE(slice_param.slice_type)) {
653 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
655 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
657 if (slice_param.num_ref_idx_active_override_flag) {
658 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
659 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
662 /* ref_pic_list_reordering */
663 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
664 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
667 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
668 IS_P_SLICE(slice_param.slice_type)) ||
669 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
670 IS_B_SLICE(slice_param.slice_type))) {
671 /* FIXME: fill weight/offset table */
675 /* dec_ref_pic_marking */
676 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
677 unsigned char no_output_of_prior_pics_flag = 0;
678 unsigned char long_term_reference_flag = 0;
679 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
681 if (pic_param.pic_fields.bits.idr_pic_flag) {
682 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
683 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
685 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
689 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
690 !IS_I_SLICE(slice_param.slice_type))
691 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
693 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
695 /* ignore for SP/SI */
697 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
698 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
700 if (slice_param.disable_deblocking_filter_idc != 1) {
701 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
702 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
706 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
707 bitstream_byte_aligning(bs, 1);
711 int H264EncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
715 bitstream_start(&bs);
716 nal_start_code_prefix(&bs);
717 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
721 *header_buffer = (unsigned char *)bs.buffer;
722 return bs.bit_offset;
726 H264EncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
730 bitstream_start(&bs);
731 nal_start_code_prefix(&bs);
732 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
736 *header_buffer = (unsigned char *)bs.buffer;
737 return bs.bit_offset;
740 int H264EncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
743 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
744 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
746 bitstream_start(&bs);
747 nal_start_code_prefix(&bs);
749 if (IS_I_SLICE(slice_param.slice_type)) {
750 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
751 } else if (IS_P_SLICE(slice_param.slice_type)) {
752 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
754 assert(IS_B_SLICE(slice_param.slice_type));
755 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
761 *header_buffer = (unsigned char *)bs.buffer;
762 return bs.bit_offset;
767 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
768 1) period between Frame #X and Frame #N = #X - #N
769 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
770 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
771 4) intra_period and intra_idr_period take precedence over ip_period
772 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
773 of I/IDR frames, see bellow examples
774 -------------------------------------------------------------------
775 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
776 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
777 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
778 1 0 ignored IDRIIIIIII... (No IDR any more)
779 1 1 ignored IDR IDR IDR IDR...
780 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
781 >=2 0 1 IDRPPP IPPP I... (3/0/1)
782 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
783 (PBB)(IBB)(PBB)(IBB)...
784 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
785 IDRPPPPP IPPPPP IPPPPP...
786 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
787 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
788 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
789 {IDR(PBB)(PBB)(IBB)(PBB)}...
790 {IDR(PBB)(PBB)} (6/6/3)
794 // General pts/dts strategy:
796 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
797 // bit tricky. We assume first of all that the frame rate never goes _above_
798 // MAX_FPS, which gives us a frame period N. The decoder can always decode
799 // in at least this speed, as long at dts <= pts (the frame is not attempted
800 // presented before it is decoded). Furthermore, we never have longer chains of
801 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
802 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
803 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
804 // frame, with an order O <= C.)
806 // Many strategies are possible, but we establish these rules:
808 // - Tip frames have dts = pts - (C-O)*N.
809 // - Non-tip frames have dts = dts_last + N.
811 // An example, with C=2 and N=10 and the data flow showed with arrows:
814 // pts: 30 40 50 60 70 80
816 // dts: 10 30 20 60 50←40
821 // To show that this works fine also with irregular spacings, let's say that
822 // the third frame is delayed a bit (something earlier was dropped). Now the
823 // situation looks like this:
826 // pts: 30 40 80 90 100 110
828 // dts: 10 30 20 90 50←40
833 // The resetting on every tip frame makes sure dts never ends up lagging a lot
834 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
836 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
837 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
838 // a tip frame and should be given a dts based on the previous one.
843 void encoding2display_order(
844 int encoding_order, int intra_period,
845 int intra_idr_period, int ip_period,
846 int *displaying_order,
847 int *frame_type, int *pts_lag)
849 int encoding_order_gop = 0;
853 if (intra_period == 1) { /* all are I/IDR frames */
854 *displaying_order = encoding_order;
855 if (intra_idr_period == 0)
856 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
858 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
862 if (intra_period == 0)
863 intra_idr_period = 0;
865 if (ip_period == 1) {
866 // No B-frames, sequence is like IDR PPPPP IPPPPP.
867 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
868 *displaying_order = encoding_order;
870 if (encoding_order_gop == 0) { /* the first frame */
871 *frame_type = FRAME_IDR;
872 } else if (intra_period != 0 && /* have I frames */
873 encoding_order_gop >= 2 &&
874 (encoding_order_gop % intra_period == 0)) {
875 *frame_type = FRAME_I;
877 *frame_type = FRAME_P;
882 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
883 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
884 *pts_lag = -1; // Most frames are not tip frames.
886 if (encoding_order_gop == 0) { /* the first frame */
887 *frame_type = FRAME_IDR;
888 *displaying_order = encoding_order;
889 // IDR frames are a special case; I honestly can't find the logic behind
890 // why this is the right thing, but it seems to line up nicely in practice :-)
891 *pts_lag = TIMEBASE / MAX_FPS;
892 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
893 *frame_type = FRAME_B;
894 *displaying_order = encoding_order - 1;
895 if ((encoding_order_gop % ip_period) == 0) {
896 *pts_lag = 0; // Last B-frame.
898 } else if (intra_period != 0 && /* have I frames */
899 encoding_order_gop >= 2 &&
900 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
901 *frame_type = FRAME_I;
902 *displaying_order = encoding_order + ip_period - 1;
904 *frame_type = FRAME_P;
905 *displaying_order = encoding_order + ip_period - 1;
910 static const char *rc_to_string(int rc_mode)
923 case VA_RC_VBR_CONSTRAINED:
924 return "VBR_CONSTRAINED";
930 void H264EncoderImpl::enable_zerocopy_if_possible()
932 if (global_flags.uncompressed_video_to_http) {
933 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --uncompressed_video_to_http.\n");
934 use_zerocopy = false;
940 VADisplay H264EncoderImpl::va_open_display(const string &va_display)
942 if (va_display.empty()) {
943 x11_display = XOpenDisplay(NULL);
945 fprintf(stderr, "error: can't connect to X server!\n");
948 enable_zerocopy_if_possible();
949 return vaGetDisplay(x11_display);
950 } else if (va_display[0] != '/') {
951 x11_display = XOpenDisplay(va_display.c_str());
953 fprintf(stderr, "error: can't connect to X server!\n");
956 enable_zerocopy_if_possible();
957 return vaGetDisplay(x11_display);
959 drm_fd = open(va_display.c_str(), O_RDWR);
961 perror(va_display.c_str());
964 use_zerocopy = false;
965 return vaGetDisplayDRM(drm_fd);
969 void H264EncoderImpl::va_close_display(VADisplay va_dpy)
972 XCloseDisplay(x11_display);
973 x11_display = nullptr;
980 int H264EncoderImpl::init_va(const string &va_display)
982 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
983 VAEntrypoint *entrypoints;
984 int num_entrypoints, slice_entrypoint;
985 int support_encode = 0;
986 int major_ver, minor_ver;
990 va_dpy = va_open_display(va_display);
991 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
992 CHECK_VASTATUS(va_status, "vaInitialize");
994 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
995 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
997 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
1001 /* use the highest profile */
1002 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
1003 if ((h264_profile != ~0) && h264_profile != profile_list[i])
1006 h264_profile = profile_list[i];
1007 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
1008 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
1009 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
1014 if (support_encode == 1)
1018 if (support_encode == 0) {
1019 printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
1020 printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
1021 printf("to use VA-API against DRM instead of X11.\n");
1024 switch (h264_profile) {
1025 case VAProfileH264Baseline:
1027 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
1028 h264_entropy_mode = 0;
1030 case VAProfileH264ConstrainedBaseline:
1031 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
1035 case VAProfileH264Main:
1036 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
1039 case VAProfileH264High:
1040 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
1043 h264_profile = VAProfileH264Baseline;
1045 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
1050 VAConfigAttrib attrib[VAConfigAttribTypeMax];
1052 /* find out the format for the render target, and rate control mode */
1053 for (i = 0; i < VAConfigAttribTypeMax; i++)
1054 attrib[i].type = (VAConfigAttribType)i;
1056 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
1057 &attrib[0], VAConfigAttribTypeMax);
1058 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
1059 /* check the interested configattrib */
1060 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
1061 printf("Not find desired YUV420 RT format\n");
1064 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
1065 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
1066 config_attrib_num++;
1069 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
1070 int tmp = attrib[VAConfigAttribRateControl].value;
1072 if (rc_mode == -1 || !(rc_mode & tmp)) {
1073 if (rc_mode != -1) {
1074 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
1077 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
1078 if (rc_default_modes[i] & tmp) {
1079 rc_mode = rc_default_modes[i];
1085 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
1086 config_attrib[config_attrib_num].value = rc_mode;
1087 config_attrib_num++;
1091 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
1092 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
1094 h264_packedheader = 1;
1095 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
1096 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1098 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
1099 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
1102 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
1103 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
1106 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
1107 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
1110 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
1111 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
1114 enc_packed_header_idx = config_attrib_num;
1115 config_attrib_num++;
1118 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
1119 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
1120 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1121 config_attrib_num++;
1124 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
1125 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
1132 int H264EncoderImpl::setup_encode()
1135 VASurfaceID *tmp_surfaceid;
1136 int codedbuf_size, i;
1137 static VASurfaceID src_surface[SURFACE_NUM];
1138 static VASurfaceID ref_surface[SURFACE_NUM];
1140 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
1141 &config_attrib[0], config_attrib_num, &config_id);
1142 CHECK_VASTATUS(va_status, "vaCreateConfig");
1144 /* create source surfaces */
1145 va_status = vaCreateSurfaces(va_dpy,
1146 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1147 &src_surface[0], SURFACE_NUM,
1149 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1151 /* create reference surfaces */
1152 va_status = vaCreateSurfaces(va_dpy,
1153 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1154 &ref_surface[0], SURFACE_NUM,
1156 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1158 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
1159 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
1160 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
1162 /* Create a context for this encode pipe */
1163 va_status = vaCreateContext(va_dpy, config_id,
1164 frame_width_mbaligned, frame_height_mbaligned,
1166 tmp_surfaceid, 2 * SURFACE_NUM,
1168 CHECK_VASTATUS(va_status, "vaCreateContext");
1169 free(tmp_surfaceid);
1171 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
1173 for (i = 0; i < SURFACE_NUM; i++) {
1174 /* create coded buffer once for all
1175 * other VA buffers which won't be used again after vaRenderPicture.
1176 * so APP can always vaCreateBuffer for every frame
1177 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
1178 * so VA won't maintain the coded buffer
1180 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
1181 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
1182 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1185 /* create OpenGL objects */
1186 //glGenFramebuffers(SURFACE_NUM, fbos);
1188 for (i = 0; i < SURFACE_NUM; i++) {
1189 glGenTextures(1, &gl_surfaces[i].y_tex);
1190 glGenTextures(1, &gl_surfaces[i].cbcr_tex);
1192 if (!use_zerocopy) {
1194 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].y_tex);
1195 glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, frame_width, frame_height);
1197 // Create CbCr image.
1198 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].cbcr_tex);
1199 glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG8, frame_width / 2, frame_height / 2);
1201 // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
1202 // buffers, due to potentially differing pitch.
1203 glGenBuffers(1, &gl_surfaces[i].pbo);
1204 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1205 glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
1206 uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
1207 gl_surfaces[i].y_offset = 0;
1208 gl_surfaces[i].cbcr_offset = frame_width * frame_height;
1209 gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
1210 gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
1211 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1215 for (i = 0; i < SURFACE_NUM; i++) {
1216 gl_surfaces[i].src_surface = src_surface[i];
1217 gl_surfaces[i].ref_surface = ref_surface[i];
1223 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1226 template<class T, class C>
1227 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1229 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1230 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1231 sort(middle, end, less_than);
1234 void H264EncoderImpl::update_ReferenceFrames(int frame_type)
1238 if (frame_type == FRAME_B)
1241 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1243 if (numShortTerm > num_ref_frames)
1244 numShortTerm = num_ref_frames;
1245 for (i=numShortTerm-1; i>0; i--)
1246 ReferenceFrames[i] = ReferenceFrames[i-1];
1247 ReferenceFrames[0] = CurrentCurrPic;
1249 current_frame_num++;
1250 if (current_frame_num > MaxFrameNum)
1251 current_frame_num = 0;
1255 int H264EncoderImpl::update_RefPicList(int frame_type)
1257 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1258 return a.frame_idx > b.frame_idx;
1260 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1261 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1263 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1264 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1267 if (frame_type == FRAME_P) {
1268 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1269 sort(&RefPicList0_P[0], &RefPicList0_P[numShortTerm], descending_by_frame_idx);
1270 } else if (frame_type == FRAME_B) {
1271 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1272 sort_two(&RefPicList0_B[0], &RefPicList0_B[numShortTerm], CurrentCurrPic, ascending_by_top_field_order_cnt);
1274 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1275 sort_two(&RefPicList1_B[0], &RefPicList1_B[numShortTerm], CurrentCurrPic, descending_by_top_field_order_cnt);
1282 int H264EncoderImpl::render_sequence()
1284 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1286 VAEncMiscParameterBuffer *misc_param;
1287 VAEncMiscParameterRateControl *misc_rate_ctrl;
1289 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1290 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1291 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1292 seq_param.bits_per_second = frame_bitrate;
1294 seq_param.intra_period = intra_period;
1295 seq_param.intra_idr_period = intra_idr_period;
1296 seq_param.ip_period = ip_period;
1298 seq_param.max_num_ref_frames = num_ref_frames;
1299 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1300 seq_param.time_scale = TIMEBASE * 2;
1301 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1302 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1303 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1304 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1305 seq_param.seq_fields.bits.chroma_format_idc = 1;
1306 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1308 if (frame_width != frame_width_mbaligned ||
1309 frame_height != frame_height_mbaligned) {
1310 seq_param.frame_cropping_flag = 1;
1311 seq_param.frame_crop_left_offset = 0;
1312 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1313 seq_param.frame_crop_top_offset = 0;
1314 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1317 va_status = vaCreateBuffer(va_dpy, context_id,
1318 VAEncSequenceParameterBufferType,
1319 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1320 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1322 va_status = vaCreateBuffer(va_dpy, context_id,
1323 VAEncMiscParameterBufferType,
1324 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1325 1, NULL, &rc_param_buf);
1326 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1328 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1329 misc_param->type = VAEncMiscParameterTypeRateControl;
1330 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1331 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1332 misc_rate_ctrl->bits_per_second = frame_bitrate;
1333 misc_rate_ctrl->target_percentage = 66;
1334 misc_rate_ctrl->window_size = 1000;
1335 misc_rate_ctrl->initial_qp = initial_qp;
1336 misc_rate_ctrl->min_qp = minimal_qp;
1337 misc_rate_ctrl->basic_unit_size = 0;
1338 vaUnmapBuffer(va_dpy, rc_param_buf);
1340 render_id[0] = seq_param_buf;
1341 render_id[1] = rc_param_buf;
1343 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1348 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1350 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1351 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1352 int PicOrderCntMsb, TopFieldOrderCnt;
1354 if (frame_type == FRAME_IDR)
1355 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1357 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1358 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1361 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1362 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1363 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1364 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1365 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1366 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1368 PicOrderCntMsb = prevPicOrderCntMsb;
1370 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1372 if (frame_type != FRAME_B) {
1373 PicOrderCntMsb_ref = PicOrderCntMsb;
1374 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1377 return TopFieldOrderCnt;
1380 int H264EncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1382 VABufferID pic_param_buf;
1386 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1387 pic_param.CurrPic.frame_idx = current_frame_num;
1388 pic_param.CurrPic.flags = 0;
1389 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1390 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1391 CurrentCurrPic = pic_param.CurrPic;
1393 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1394 for (i = numShortTerm; i < MAX_NUM_REF1; i++) {
1395 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1396 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1399 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1400 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1401 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1402 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1403 pic_param.frame_num = current_frame_num;
1404 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1405 pic_param.last_picture = false; // FIXME
1406 pic_param.pic_init_qp = initial_qp;
1408 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1409 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1410 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1412 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1417 int H264EncoderImpl::render_packedsequence()
1419 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1420 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1421 unsigned int length_in_bits;
1422 unsigned char *packedseq_buffer = NULL;
1425 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1427 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1429 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1430 packedheader_param_buffer.has_emulation_bytes = 0;
1431 va_status = vaCreateBuffer(va_dpy,
1433 VAEncPackedHeaderParameterBufferType,
1434 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1435 &packedseq_para_bufid);
1436 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1438 va_status = vaCreateBuffer(va_dpy,
1440 VAEncPackedHeaderDataBufferType,
1441 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1442 &packedseq_data_bufid);
1443 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1445 render_id[0] = packedseq_para_bufid;
1446 render_id[1] = packedseq_data_bufid;
1447 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1449 free(packedseq_buffer);
1455 int H264EncoderImpl::render_packedpicture()
1457 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1458 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1459 unsigned int length_in_bits;
1460 unsigned char *packedpic_buffer = NULL;
1463 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1464 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1465 packedheader_param_buffer.bit_length = length_in_bits;
1466 packedheader_param_buffer.has_emulation_bytes = 0;
1468 va_status = vaCreateBuffer(va_dpy,
1470 VAEncPackedHeaderParameterBufferType,
1471 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1472 &packedpic_para_bufid);
1473 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1475 va_status = vaCreateBuffer(va_dpy,
1477 VAEncPackedHeaderDataBufferType,
1478 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1479 &packedpic_data_bufid);
1480 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1482 render_id[0] = packedpic_para_bufid;
1483 render_id[1] = packedpic_data_bufid;
1484 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1486 free(packedpic_buffer);
1491 void H264EncoderImpl::render_packedslice()
1493 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1494 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1495 unsigned int length_in_bits;
1496 unsigned char *packedslice_buffer = NULL;
1499 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1500 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1501 packedheader_param_buffer.bit_length = length_in_bits;
1502 packedheader_param_buffer.has_emulation_bytes = 0;
1504 va_status = vaCreateBuffer(va_dpy,
1506 VAEncPackedHeaderParameterBufferType,
1507 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1508 &packedslice_para_bufid);
1509 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1511 va_status = vaCreateBuffer(va_dpy,
1513 VAEncPackedHeaderDataBufferType,
1514 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1515 &packedslice_data_bufid);
1516 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1518 render_id[0] = packedslice_para_bufid;
1519 render_id[1] = packedslice_data_bufid;
1520 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1522 free(packedslice_buffer);
1525 int H264EncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1527 VABufferID slice_param_buf;
1531 update_RefPicList(frame_type);
1533 /* one frame, one slice */
1534 slice_param.macroblock_address = 0;
1535 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1536 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1537 if (frame_type == FRAME_IDR) {
1538 if (encoding_frame_num != 0)
1539 ++slice_param.idr_pic_id;
1540 } else if (frame_type == FRAME_P) {
1541 int refpiclist0_max = h264_maxref & 0xffff;
1542 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1544 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1545 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1546 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1548 } else if (frame_type == FRAME_B) {
1549 int refpiclist0_max = h264_maxref & 0xffff;
1550 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1552 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1553 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1554 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1555 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1558 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1559 for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1560 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1561 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1565 slice_param.slice_alpha_c0_offset_div2 = 0;
1566 slice_param.slice_beta_offset_div2 = 0;
1567 slice_param.direct_spatial_mv_pred_flag = 1;
1568 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1571 if (h264_packedheader &&
1572 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1573 render_packedslice();
1575 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1576 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1577 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1579 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1586 void H264EncoderImpl::save_codeddata(storage_task task)
1588 VACodedBufferSegment *buf_list = NULL;
1593 const int64_t global_delay = int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS); // So we never get negative dts.
1595 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1596 CHECK_VASTATUS(va_status, "vaMapBuffer");
1597 while (buf_list != NULL) {
1598 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1599 buf_list = (VACodedBufferSegment *) buf_list->next;
1601 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1606 memset(&pkt, 0, sizeof(pkt));
1608 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1609 pkt.size = data.size();
1610 pkt.stream_index = 0;
1611 if (task.frame_type == FRAME_IDR) {
1612 pkt.flags = AV_PKT_FLAG_KEY;
1617 httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay,
1618 global_flags.uncompressed_video_to_http ? HTTPD::DESTINATION_FILE_ONLY : HTTPD::DESTINATION_FILE_AND_HTTP);
1620 // Encode and add all audio frames up to and including the pts of this video frame.
1623 vector<float> audio;
1625 unique_lock<mutex> lock(frame_queue_mutex);
1626 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1627 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1628 auto it = pending_audio_frames.begin();
1629 if (it->first > task.pts) break;
1630 audio_pts = it->first;
1631 audio = move(it->second);
1632 pending_audio_frames.erase(it);
1635 audio_frame->nb_samples = audio.size() / 2;
1636 audio_frame->format = AV_SAMPLE_FMT_S32;
1637 audio_frame->channel_layout = AV_CH_LAYOUT_STEREO;
1639 unique_ptr<int32_t[]> int_samples(new int32_t[audio.size()]);
1640 int ret = avcodec_fill_audio_frame(audio_frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
1642 fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
1645 for (int i = 0; i < audio_frame->nb_samples * 2; ++i) {
1646 if (audio[i] >= 1.0f) {
1647 int_samples[i] = 2147483647;
1648 } else if (audio[i] <= -1.0f) {
1649 int_samples[i] = -2147483647;
1651 int_samples[i] = lrintf(audio[i] * 2147483647.0f);
1656 av_init_packet(&pkt);
1660 avcodec_encode_audio2(context_audio, &pkt, audio_frame, &got_output);
1662 pkt.stream_index = 1;
1663 pkt.flags = AV_PKT_FLAG_KEY;
1664 httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay, HTTPD::DESTINATION_FILE_AND_HTTP);
1666 // TODO: Delayed frames.
1667 av_frame_unref(audio_frame);
1668 av_free_packet(&pkt);
1669 if (audio_pts == task.pts) break;
1674 // this is weird. but it seems to put a new frame onto the queue
1675 void H264EncoderImpl::storage_task_enqueue(storage_task task)
1677 unique_lock<mutex> lock(storage_task_queue_mutex);
1678 storage_task_queue.push(move(task));
1679 storage_task_queue_changed.notify_all();
1682 void H264EncoderImpl::storage_task_thread()
1685 storage_task current;
1687 // wait until there's an encoded frame
1688 unique_lock<mutex> lock(storage_task_queue_mutex);
1689 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1690 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1691 current = move(storage_task_queue.front());
1692 storage_task_queue.pop();
1697 // waits for data, then saves it to disk.
1698 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1699 CHECK_VASTATUS(va_status, "vaSyncSurface");
1700 save_codeddata(move(current));
1703 unique_lock<mutex> lock(storage_task_queue_mutex);
1704 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1705 storage_task_queue_changed.notify_all();
1710 int H264EncoderImpl::release_encode()
1712 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1713 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1714 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1715 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1717 if (!use_zerocopy) {
1718 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1719 glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1720 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1721 glDeleteBuffers(1, &gl_surfaces[i].pbo);
1723 glDeleteTextures(1, &gl_surfaces[i].y_tex);
1724 glDeleteTextures(1, &gl_surfaces[i].cbcr_tex);
1727 vaDestroyContext(va_dpy, context_id);
1728 vaDestroyConfig(va_dpy, config_id);
1733 int H264EncoderImpl::deinit_va()
1735 vaTerminate(va_dpy);
1737 va_close_display(va_dpy);
1743 H264EncoderImpl::H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
1744 : current_storage_frame(0), surface(surface), httpd(httpd)
1746 AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC);
1747 context_audio = avcodec_alloc_context3(codec_audio);
1748 context_audio->bit_rate = AUDIO_OUTPUT_BIT_RATE;
1749 context_audio->sample_rate = OUTPUT_FREQUENCY;
1750 context_audio->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT;
1751 context_audio->channels = 2;
1752 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1753 context_audio->time_base = AVRational{1, TIMEBASE};
1754 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1755 fprintf(stderr, "Could not open codec\n");
1758 audio_frame = av_frame_alloc();
1760 frame_width = width;
1761 frame_height = height;
1762 frame_width_mbaligned = (frame_width + 15) & (~15);
1763 frame_height_mbaligned = (frame_height + 15) & (~15);
1767 if (global_flags.uncompressed_video_to_http) {
1768 reorderer.reset(new FrameReorderer(ip_period - 1, frame_width, frame_height));
1771 init_va(va_display);
1774 // No frames are ready yet.
1775 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1777 memset(&seq_param, 0, sizeof(seq_param));
1778 memset(&pic_param, 0, sizeof(pic_param));
1779 memset(&slice_param, 0, sizeof(slice_param));
1781 storage_thread = thread(&H264EncoderImpl::storage_task_thread, this);
1783 encode_thread = thread([this]{
1784 //SDL_GL_MakeCurrent(window, context);
1785 QOpenGLContext *context = create_context(this->surface);
1786 eglBindAPI(EGL_OPENGL_API);
1787 if (!make_current(context, this->surface)) {
1788 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1792 encode_thread_func();
1796 H264EncoderImpl::~H264EncoderImpl()
1799 av_frame_free(&audio_frame);
1801 // TODO: Destroy context.
1804 bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1806 assert(!is_shutdown);
1808 // Wait until this frame slot is done encoding.
1809 unique_lock<mutex> lock(storage_task_queue_mutex);
1810 if (srcsurface_status[current_storage_frame % SURFACE_NUM] != SRC_SURFACE_FREE) {
1811 fprintf(stderr, "Warning: Slot %d (for frame %d) is still encoding, rendering has to wait for H.264 encoder\n",
1812 current_storage_frame % SURFACE_NUM, current_storage_frame);
1814 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1815 srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
1816 if (storage_thread_should_quit) return false;
1819 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
1820 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1821 *y_tex = surf->y_tex;
1822 *cbcr_tex = surf->cbcr_tex;
1824 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
1825 CHECK_VASTATUS(va_status, "vaDeriveImage");
1828 VABufferInfo buf_info;
1829 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1830 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1831 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1834 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1835 EGLint y_attribs[] = {
1836 EGL_WIDTH, frame_width,
1837 EGL_HEIGHT, frame_height,
1838 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1839 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1840 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1841 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1845 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1846 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1848 // Associate Y image to a texture.
1849 glBindTexture(GL_TEXTURE_2D, *y_tex);
1850 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1852 // Create CbCr image.
1853 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1854 EGLint cbcr_attribs[] = {
1855 EGL_WIDTH, frame_width,
1856 EGL_HEIGHT, frame_height,
1857 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1858 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1859 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1860 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1864 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1865 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1867 // Associate CbCr image to a texture.
1868 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1869 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1875 void H264EncoderImpl::add_audio(int64_t pts, vector<float> audio)
1877 assert(!is_shutdown);
1879 unique_lock<mutex> lock(frame_queue_mutex);
1880 pending_audio_frames[pts] = move(audio);
1882 frame_queue_nonempty.notify_all();
1885 RefCountedGLsync H264EncoderImpl::end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames)
1887 assert(!is_shutdown);
1889 if (!use_zerocopy) {
1890 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1892 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1895 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1898 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1900 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->y_offset));
1903 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1905 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->cbcr_offset));
1908 glBindTexture(GL_TEXTURE_2D, 0);
1910 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1913 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1917 RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1919 glFlush(); // Make the H.264 thread see the fence as soon as possible.
1923 unique_lock<mutex> lock(frame_queue_mutex);
1924 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
1925 ++current_storage_frame;
1927 frame_queue_nonempty.notify_all();
1931 void H264EncoderImpl::shutdown()
1938 unique_lock<mutex> lock(frame_queue_mutex);
1939 encode_thread_should_quit = true;
1940 frame_queue_nonempty.notify_all();
1942 encode_thread.join();
1944 unique_lock<mutex> lock(storage_task_queue_mutex);
1945 storage_thread_should_quit = true;
1946 frame_queue_nonempty.notify_all();
1947 storage_task_queue_changed.notify_all();
1949 storage_thread.join();
1956 void H264EncoderImpl::encode_thread_func()
1958 int64_t last_dts = -1;
1959 int gop_start_display_frame_num = 0;
1960 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
1963 int frame_type, display_frame_num;
1964 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
1965 &display_frame_num, &frame_type, &pts_lag);
1966 if (frame_type == FRAME_IDR) {
1968 current_frame_num = 0;
1969 gop_start_display_frame_num = display_frame_num;
1973 unique_lock<mutex> lock(frame_queue_mutex);
1974 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
1975 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
1977 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
1978 // We have queued frames that were supposed to be B-frames,
1979 // but will be no P-frame to encode them against. Encode them all
1980 // as P-frames instead. Note that this happens under the mutex,
1981 // but nobody else uses it at this point, since we're shutting down,
1982 // so there's no contention.
1983 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
1986 frame = move(pending_video_frames[display_frame_num]);
1987 pending_video_frames.erase(display_frame_num);
1991 // Determine the dts of this frame.
1993 if (pts_lag == -1) {
1994 assert(last_dts != -1);
1995 dts = last_dts + (TIMEBASE / MAX_FPS);
1997 dts = frame.pts - pts_lag;
2001 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts);
2005 void H264EncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
2007 if (pending_video_frames.empty()) {
2011 for (auto &pending_frame : pending_video_frames) {
2012 int display_frame_num = pending_frame.first;
2013 assert(display_frame_num > 0);
2014 PendingFrame frame = move(pending_frame.second);
2015 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
2016 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
2017 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
2021 if (global_flags.uncompressed_video_to_http) {
2022 // Add frames left in reorderer.
2023 while (!reorderer->empty()) {
2024 pair<int64_t, const uint8_t *> output_frame = reorderer->get_first_frame();
2025 add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
2030 void H264EncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data)
2033 memset(&pkt, 0, sizeof(pkt));
2035 pkt.data = const_cast<uint8_t *>(data);
2036 pkt.size = frame_width * frame_height * 2;
2037 pkt.stream_index = 0;
2038 pkt.flags = AV_PKT_FLAG_KEY;
2039 httpd->add_packet(pkt, pts, pts, HTTPD::DESTINATION_HTTP_ONLY);
2044 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
2046 if (src_width == dst_pitch) {
2047 memcpy(dst, src, src_width * height);
2049 for (size_t y = 0; y < height; ++y) {
2050 const uint8_t *sptr = src + y * src_width;
2051 uint8_t *dptr = dst + y * dst_pitch;
2052 memcpy(dptr, sptr, src_width);
2059 void H264EncoderImpl::encode_frame(H264EncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
2060 int frame_type, int64_t pts, int64_t dts)
2062 // Wait for the GPU to be done with the frame.
2065 sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
2067 } while (sync_status == GL_TIMEOUT_EXPIRED);
2068 assert(sync_status != GL_WAIT_FAILED);
2070 // Release back any input frames we needed to render this frame.
2071 frame.input_frames.clear();
2073 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
2077 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
2078 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
2079 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
2080 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
2082 unsigned char *surface_p = nullptr;
2083 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
2085 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
2086 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
2088 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
2089 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
2091 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
2092 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
2094 if (global_flags.uncompressed_video_to_http) {
2095 // Add uncompressed video. (Note that pts == dts here.)
2096 const int64_t global_delay = int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS); // Needs to match audio.
2097 pair<int64_t, const uint8_t *> output_frame = reorderer->reorder_frame(pts + global_delay, reinterpret_cast<uint8_t *>(surf->y_ptr));
2098 if (output_frame.second != nullptr) {
2099 add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
2104 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
2105 CHECK_VASTATUS(va_status, "vaDestroyImage");
2107 // Schedule the frame for encoding.
2108 VASurfaceID va_surface = surf->src_surface;
2109 va_status = vaBeginPicture(va_dpy, context_id, va_surface);
2110 CHECK_VASTATUS(va_status, "vaBeginPicture");
2112 if (frame_type == FRAME_IDR) {
2114 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2115 if (h264_packedheader) {
2116 render_packedsequence();
2117 render_packedpicture();
2120 //render_sequence();
2121 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2123 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2125 va_status = vaEndPicture(va_dpy, context_id);
2126 CHECK_VASTATUS(va_status, "vaEndPicture");
2128 // so now the data is done encoding (well, async job kicked off)...
2129 // we send that to the storage thread
2131 tmp.display_order = display_frame_num;
2132 tmp.frame_type = frame_type;
2135 storage_task_enqueue(move(tmp));
2137 update_ReferenceFrames(frame_type);
2141 H264Encoder::H264Encoder(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
2142 : impl(new H264EncoderImpl(surface, va_display, width, height, httpd)) {}
2144 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2145 H264Encoder::~H264Encoder() {}
2147 void H264Encoder::add_audio(int64_t pts, vector<float> audio)
2149 impl->add_audio(pts, audio);
2152 bool H264Encoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
2154 return impl->begin_frame(y_tex, cbcr_tex);
2157 RefCountedGLsync H264Encoder::end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames)
2159 return impl->end_frame(pts, input_frames);
2162 void H264Encoder::shutdown()